CN205469232U - Brake mechanism and baby carriage - Google Patents

Abstract

The utility model discloses a brake mechanism installs in children's shallow, children's shallow has the car foot, and the car foot lower extreme is provided with wheel seat and wheel, is fixed with brake wheel hub on the wheel, and brake mechanism includes brake assembly, and brake assembly includes driving piece and brake piece, and the brake piece includes first elastic component and brake lever, and the driving piece sets up in the wheel seat with brake piece activity, and first elastic component sets up between driving piece and brake lever, orders about brake lever and brake wheel hub block by first elastic component during the driving piece activity. By utilizing the elastic deformation of the first elastic piece, the elastic force can drive the brake rod to be clamped with the brake hub after the brake rod and the brake teeth are staggered, the false brake problem is improved, and a more stable brake mechanism is provided. Correspondingly, the utility model also discloses three kinds of children's shallow that have brake mechanism.

Description

Brake mechanism and stroller

technical field

The utility model relates to a braking mechanism, in particular to a braking mechanism capable of preventing false braking and a children's stroller with the braking mechanism.

Background technique

At present, most of the brake mechanisms of children's strollers on the market mainly include brake hubs and brake pedals. Wherein the brake hub is fixed on the wheel axle (or wheel), and the outer periphery of the brake hub includes a plurality of brake teeth arranged at intervals, and a brake card slot is formed between two adjacent brake teeth. The brake pedal is pivotably arranged on the vehicle body at a position close to the brake hub, and a brake lever is arranged on the brake pedal. When the brake pedal is stepped down with the foot, the brake pedal pivots and drives the brake lever to be inserted into a brake slot. At this time, due to the engagement restriction of the brake lever, the wheel shaft cannot continue to rotate, realizing braking purpose. When the cart needs to be moved, the brake pedal is moved upwards to disengage the brake lever from the brake slot, then the brake hub is released and the wheel shaft can rotate freely.

However, there is a certain potential safety hazard in the braking mechanism of this structure, that is, the situation of false braking is prone to occur. Specifically, if the end of the brake lever and the end of a brake tooth abut against each other without being inserted into the brake slot, the brake lever will block the brake hub to a certain extent through the abutment and friction, so that the wheel shaft cannot rotate temporarily. Sometimes the user easily mistakenly thinks that the stroller has been braked in place. In fact, the brake lever is not stuck in the brake slot. If the brake pedal or the wheel shaft is affected by external collisions, so that the brake lever no longer touches the end of the brake tooth, the wheel shaft can rotate freely. At this time, if the stroller is on a sloping ground, it will endanger the safety of the child.

Therefore, it is necessary to provide a brake mechanism that can improve the false brake problem and make the brake more stable.

Utility model content

The purpose of the utility model is to provide a braking mechanism which can improve the problem of false braking and make the braking more stable.

Another object of the present utility model is to provide a stroller for children with the braking mechanism.

In order to achieve the above object, the utility model provides a brake mechanism, which is installed on a children's stroller. The children's stroller has a foot, and the lower end of the foot is provided with a wheel seat and a wheel. The brake hub is fixed on the wheel. The brake mechanism includes a brake assembly , the brake assembly includes a driving part and a brake part, the brake part includes a first elastic part and a brake lever, the driving part and the brake part are movably arranged on the wheel seat, the first elastic part is arranged between the driving part and the brake lever, and the driving part is movable At the same time, the first elastic member drives the brake lever to engage with the brake hub.

Compared with the prior art, the brake mechanism of the utility model drives the brake assembly to brake by directly or indirectly operating the driver. A first elastic member is arranged between the brake levers, and the elastic deformation of the first elastic member enables a large relative movement margin between the driving member and the brake lever without being stuck against each other. Therefore, when the brake teeth and the brake lever are slightly After being staggered, driven by the elastic force of the first elastic member, the brake lever will automatically engage with the brake hub. The brake mechanism effectively solves the problem of false brakes, ensures that the brakes are in place, and is beneficial to improving the safety of the children's stroller.

Preferably, the brake member is slidably arranged on the wheel seat up and down, the brake lever passes through the wheel seat and is located on the brake hub, the driving member includes a linkage member slidingly accommodated in the wheel seat up and down, and the upper end of the first elastic member is elastically Butting against the linking part, the first elastic part drives the brake lever to slide and snap into the brake hub.

Specifically, the brake member also includes a body located in the wheel seat, the brake lever is fixed at the lower end of the body, the upper end of the body has two side arms spaced apart from each other, and the body also includes a raised positioning column located between the two side arms. The lower end of an elastic member is positioned on the positioning post, the upper end of the linking member has a limiting portion extending between the arms on both sides and located above the positioning post, and the upper end of the first elastic member abuts against the limiting portion.

Specifically, the driving part further includes a rotating part and a connecting part. The rotating part is pivotally arranged in the wheel seat, and the connecting part is connected between the rotating part and the linking part. When the rotating part rotates, the connecting part pulls the linking part.

More specifically, the connecting part is an iron wire, one end of the iron wire is wound on the rotating part, and the other end of the iron wire is positioned on the linking part.

Preferably, the driving part is located in the wheel seat, and one end of the driving part is pivotally connected to the wheel seat, one end of the brake lever is pivotally connected in the wheel seat, and the other end of the brake lever is located outside the wheel seat and is provided with a snap-in brake The brake edge of the wheel hub, when the other end of the driving member swings up, drives the brake edge to swing towards the brake hub through the first elastic member.

Specifically, the brake lever is pivotally connected to the wheel seat coaxially with the driving member.

Specifically, the first elastic member is a torsion spring, one end of the torsion spring is fixed to the driving member, a fixing hole is opened on the brake lever, and the other end of the torsion spring passes through the fixing hole.

Specifically, a second elastic member is provided between the wheel base and the driving member, and the second elastic member pushes the driving member downwards so that the other end of the driving member has a tendency to swing downward.

Preferably, the driving member includes a rotating member rotatably arranged in the wheel seat, and when the rotating member rotates, the first elastic member drives the brake lever to engage with the brake hub.

Specifically, the rotating member is a turntable.

Specifically, the brake member further includes a sleeve slidably arranged in the wheel seat, the sleeve is arranged between the rotating member and the brake lever, one end of the brake lever is slidably connected to the sleeve, and the other end of the brake lever extends toward the brake hub and can pass through. Outside the wheel seat, the first elastic member elastically resists between the sleeve and the brake lever, the rotating member rotates and drives the sleeve, and drives the brake lever to engage with the brake hub through the first elastic member.

More specifically, the rotating member has a first inclined surface that pushes the sleeve outward when the rotating member rotates. When the rotating member rotates, the sleeve is driven by the first inclined surface, and the brake lever is pushed into the brake hub through the first elastic member.

In detail, the rotating part is provided with an arc-shaped groove for accommodating the sleeve, and the rotating part also has a second slope corresponding to the first slope, the first slope and the second slope are respectively located on both sides of the arc-shaped groove, and the sleeve has The two protruding conflicting parts are respectively in contact with the first slope and the second slope.

More specifically, the sleeve has a hollow structure with one end open, and a guide groove is provided on the side wall of the sleeve, and a sliding part is provided at one end of the brake lever, and one end of the brake lever is accommodated in the sleeve, and the sliding part is slidably arranged in the guide groove , the first elastic member is located in the sleeve.

In detail, a third elastic member is provided between the wheel seat and the sleeve, and the third elastic member pushes the sleeve to slide inward.

In detail, the brake member includes two brake levers, two first elastic members and two sleeves, the two sides of the rotating member are respectively provided with first slopes, the two sleeves are respectively corresponding to the two first slopes, and the two brake members are respectively slidably connected to the The two sleeves, and the two first elastic parts respectively push the two brake levers to extend out of the two side surfaces of the wheel seat when the rotating part rotates.

Preferably, the lower end of the foot is provided with a wheel base and two wheels, and the two wheels are respectively provided with brake hubs, the brake parts include two first elastic parts and two brake levers, and the driving part simultaneously drives the two first elastic parts to drive the two first elastic parts. The brake lever is engaged with the two brake hubs on both sides respectively.

Preferably, the brake mechanism also includes an operating component and a connecting line. The operating component includes an operating part and a locking part. One end of the connecting wire is connected to the operating component, and the other end of the connecting wire is connected to the driving part. After the operating part pulls the connecting wire, one end of the locking part snaps into the positioning part, and the other end of the locking part is operated to move the locking part away. positioning department.

The operating part is a sliding sleeve that is slidably set on the driver, and the locking part is a hook that is pivotally connected to the sliding sleeve. After the sliding sleeve pulls the connecting line and moves, one end of the hook is inserted into the positioning part, and the hook is pressed. At the other end, the hook member pivots away from the positioning part.

Preferably, the connecting wires are arranged inside the driver and the bicycle.

Preferably, the upper end of the sliding sleeve is provided with a brake operating portion extending outward.

Preferably, the operating assembly further includes a sliding part slidably disposed in the driver, the sliding part is fixed to the sliding sleeve, and one end of the connecting wire is fixed to the sliding part.

Preferably, one end of the hook has a hook that can be snapped into the positioning portion, and the other end of the hook is slidably provided with a safety lock. For the abutment, the safety lock slides to disengage the abutment from the sliding sleeve.

Preferably, the operating assembly also includes a safety lock, which is slidably arranged at the other end of the lock, and has an abutting portion that abuts against the operating member and limits the action of the lock, and the safety lock can slide to make Reach the top to disengage the operating piece.

Specifically, the operating assembly further includes a return elastic member arranged between the safety lock member and the hook member, and the return elastic member pushes the safety lock member so that the abutting portion abuts against the sliding sleeve.

Specifically, the sliding sleeve includes a main body part of the driver and a receiving part fixed to the main part and having an open side. The hook part and the safety locking part are arranged in the receiving part, and the abutting part is abutted against the edge of the receiving part.

In order to achieve another purpose, the utility model also provides a stroller for children, including a driver and feet, wheel seats and wheels are arranged at the lower end of the feet, brake hubs are fixed on the wheels, and the stroller for children also includes the above-mentioned brake mechanism .

Compared with the prior art, since the above-mentioned brake mechanism is arranged in the stroller, the long-term existence of the false brake phenomenon can be effectively avoided, the brake is guaranteed to be in place, and the safety is improved.

Simultaneously, the utility model also provides a kind of stroller for children, comprises driver and at least two cart feet, and the bottom of two cart feet is provided with wheel seat and wheel, and brake wheel hub is fixed on the wheel, also includes above-mentioned brake mechanism, and brake assembly is provided with On the wheel seat of one foot, the wheel seat of the other foot is provided with an auxiliary brake assembly. The auxiliary brake assembly includes an auxiliary driving part and an auxiliary brake part. The auxiliary brake part includes an auxiliary elastic part and an auxiliary brake lever. One end of the auxiliary driving part It is pivotally connected to the corresponding wheel seat, one end of the auxiliary brake lever is pivotally connected in the corresponding wheel seat, the other end of the auxiliary brake lever is located outside the wheel seat and is provided with a brake rib that can be snapped into the brake hub, and the auxiliary elastic member is arranged on the Between the auxiliary driving part and the auxiliary brake lever, the stroller also includes a connecting wire, one end of which is fixed to the driving part of the brake assembly, and the other end of the connecting wire is fixed to the other end of the auxiliary driving part. When the other end of the part swings up, the secondary elastic part drives the brake edge to swing to the corresponding brake hub.

Compared with the prior art, since the wheel seats under the two feet of the stroller are respectively provided with a brake assembly and an auxiliary brake assembly, when braking is required, the operation assembly of the brake mechanism can be operated so that the brake assembly can be aligned with the corresponding foot. The wheels of the vehicle are braked, and the braking action of the brake assembly is transmitted to the auxiliary brake assembly through the linkage line, so that the auxiliary brake assembly can brake the wheel under the foot of the other vehicle at the same time, and the two wheels achieve synchronous braking, and the braking effect is better. And both the brake assembly and the auxiliary brake assembly can solve the problem of false brakes.

In addition, the utility model also provides a stroller for children, which includes a driver and at least two legs, wheel seats and wheels are arranged at the lower ends of the legs, brake hubs are fixed on the wheels, and the stroller also includes linkage lines and the above-mentioned The brake mechanism includes two brake assemblies, the two brake assemblies are respectively arranged on the wheel bases of the two wheels, and the two ends of the linkage line are respectively fixed on the rotating parts of the two brake assemblies, and one of the rotating parts rotates through the linkage The wire drives the other rotating part to rotate.

Compared with the prior art, since the wheel seats under the two feet of the stroller are respectively equipped with brake assemblies, and the two brake assemblies are connected and linked by a linkage line, the braking action of one of the brake assemblies It will be transmitted to another brake component through the connecting line, so that the two brake components can brake the wheels under the two feet at the same time, and the braking effect is better. Both brake components can solve the false brake problem.

Description of drawings

Fig. 1 is a side view of the utility model children's stroller.

Fig. 2 is a perspective view of the children's stroller of the present invention.

Fig. 3 is a schematic diagram of the structural composition of the operating components in the braking mechanism of the present invention.

Fig. 4 is a cross-sectional view when the hook part of the operating assembly is locked into the positioning part on the driver.

Fig. 5 is a schematic diagram of the safety locking member in Fig. 4 after being pressed down.

FIG. 6 is a schematic diagram of the hook member in FIG. 5 after pivoting away from the positioning portion.

Fig. 7 is a schematic view of the wheel seat where the brake assembly is arranged.

Fig. 8 is a schematic diagram of the structural composition of the brake assembly.

Fig. 9 is a cross-sectional view of the brake assembly in an unbraked state.

Fig. 10 is a sectional view of the brake assembly in a braking state.

Fig. 11 is a structural schematic diagram of the rotating member in the brake assembly.

Fig. 12 is a structural schematic diagram of the linkage and the brake parts in the brake assembly.

Fig. 13 is a schematic view of the wheel seat where the auxiliary brake assembly is arranged.

Fig. 14 is a schematic diagram of the structural composition of the auxiliary brake assembly.

Fig. 15 is a cross-sectional view of the auxiliary brake assembly in the non-braking state.

Figure 16 is an exploded view of the auxiliary brake assembly.

Fig. 17 is a perspective view of the children's stroller in the second embodiment of the present invention.

Fig. 18 is a perspective view of the wheel seat where the brake assembly is provided in the second embodiment.

Fig. 19 is a schematic diagram of the hidden wheels in Fig. 18 .

Fig. 20 is a schematic diagram of the structure and composition of the brake assembly in the second embodiment.

FIG. 21 is a schematic plan view of the brake assembly in FIG. 20 .

Fig. 22 is a schematic structural view of the rotating member of the brake assembly in the second embodiment.

Fig. 23 is a cross-sectional view of the brake assembly in an unbraked state.

Fig. 24 is a sectional view of the brake assembly in a false braking state.

Fig. 25 is a sectional view of the brake assembly in the braking state.

Fig. 26 is a plan view of another wheel seat provided with another brake assembly in the second embodiment.

Explanation of reference numbers:

1 children's stroller 11 driver 111 side bar 111a positioning part

111b long slot 12 front foot 13 rear foot 14 cross bar

15 wheels 16 brake hubs 171, 172 wheel seats 171a, 172a through holes

171b elongated groove

2 Operation component 21 Sliding sleeve 211 Main body 212 Accommodating part

213 Brake operating part 22 Sliding piece 221 Wiring slot 23 Hook piece

231 snap hook 24 safety lock piece 241 top 242 pressing part

25 reset elastic parts 26 hook parts torsion spring

3 connecting wires

4 brake assembly 40 first elastic part 41 brake part 411 brake lever

412 body 412a side arm 412b positioning column 42 linkage

421 Limiting part 43 Rotating piece 431 Pivot hole 432 Wiring hole

433 base column 44 connectors

5 moving lines

6 pairs of brake components 61 pairs of driving parts 611 fixed columns 62 torsion springs

63 pairs of brake levers 631 brake ribs 632 fixing holes 64 second elastic piece

1' children's stroller 173, 174 wheel seat 173a first housing 173b second housing

173c, 173d through holes 173e guide cylinder 173f guide groove

7 brake assembly 71 brake lever 711 sliding part 72 first elastic member

73 the third elastic part 74 rotating part 740 round hole 741 arc groove

742 First inclined plane 743 Second inclined plane 744 First wiring hole 745 Second wiring hole

75 sleeve 751 interference part 752 guide groove

detailed description

Preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings of the description.

Combining Figures 1 to 4 and Figures 8 and 9, the utility model provides a brake mechanism that can be installed on a children's stroller 1. The children's stroller 1 has a driver 11 and a foot, and the lower end of the foot is provided with a wheel seat and a wheel. 15, the wheel 15 is fixed with a brake hub 16. The brake mechanism includes an operating assembly 2, a connecting line 3 and a brake assembly 4. The operating assembly 2 includes an operating part and a locking part, wherein the operating part is arranged on the driver 11, the locking part is connected to the operating part, and the driver 11 is provided with a positioning part 111a for Engage with the lock. The brake assembly 4 includes a driving part and a braking part 41. The braking part 41 includes a first elastic part 40 and a brake lever 411. The driving part and the braking part 41 are movably arranged on the wheel seat, and the first elastic part 40 is arranged on the driving part and the brake lever. Between 411, the first elastic member 40 does not need to be in direct contact with both the driving member and the brake lever 411, it only needs to be able to transmit the action of the driving member to the brake lever 411 through elastic force to drive the brake lever 411. One end of the connecting wire 3 is connected with the operating assembly 2, and the other end of the connecting wire 3 is connected with the driving member. When the user wants to brake, the operating part is operated to pull the connecting wire 3 to move up. When the driving part is pulled by the connecting wire 3, the first elastic part 40 drives the brake part 41 to move and the brake lever 411 engages with the brake hub 16. , so as to achieve the braking effect; at the same time, one end of the locking member will engage with the positioning portion 111a to position the brake assembly 4 at the brake locking position. When the user wants to release the brake, the other end of the lock member can be operated to move the lock member away from the positioning portion 111a, so that the brake structure is released and returns to the unbraked position, so the user can continue to push the stroller 1 .

The above-mentioned operating part can be a sliding sleeve 21 slidably set on the driver 11, and the locking member can be a hook member 23 pivotally connected to the sliding sleeve 21. When the sliding sleeve 21 pulls the connecting line 3 to move up, it will make the The brake assembly 4 moves to the brake locking position. At this time, one end of the hook member 23 will engage with the positioning portion 111a to position the brake assembly 4 at the brake locking position. When the other end of the hook member 23 is pressed, the hook member 23 The pivoting is disengaged from the positioning portion 111a, so that the brake structure is released and returns to the unbraked position.

As shown in Fig. 1 and Fig. 2, the quantity of the bicycle legs in the present embodiment is four, including two front bicycle feet 12 and two rear bicycle feet 13 in the four bicycle feet, the upper end and the same side of each front bicycle foot 12 The upper ends of the rear bicycle feet 13 are pivotally connected, and a cross bar 14 is connected and fixed between the lower ends of the two rear bicycle feet 13 . The lower end of front foot 12 and rear foot 13 is all provided with wheel 15, and the inner side of wheel 15 of two rear foot 13 lower ends is fixed with brake wheel hub 16, and two rear foot 13 lower ends are also respectively provided with and adjacent to brake wheel hub 16. The wheel seat 171,172. The driver 11 is U-shaped and includes two side bars 111 , and the two side bars 111 are respectively arranged on the two rear legs 13 . The brake mechanism also includes a connecting line 5 and an auxiliary brake assembly 6 . The operating assembly 2 is arranged on the side bar 111 of the driver 11, the brake assembly 4 is arranged on the wheel seat 171 under the rear foot 13 on the same side as the operation assembly 2, and the auxiliary brake assembly 6 is arranged on the other rear foot 13. Wheel seat 172. The connection wire 3 is connected between the operation assembly 2 and the brake assembly 4, and the connection wire 3 is arranged in the driver 11 and the rear bicycle foot 13 on the same side along the direction shown in FIG. 1 . The connecting wire 5 is connected between the brake assembly 4 and the auxiliary brake assembly 6. As shown in Figure 2, the two ends of the connecting wire 5 are respectively connected to the brake assembly 4 and the auxiliary brake assembly 6. The outside of the crossbar 14 and the rear foot 13; it can be understood that the linkage line 5 can also be arranged in the rear foot 13 and the crossbar 14, which can also achieve the effect of linkage braking. When the sliding sleeve 21 is pulled upwards, the sliding sleeve 21 drives the connecting wire 3 to move upward, and the connecting wire 3 drives the brake assembly 4 to perform a braking action, and the brake assembly 4 drives the auxiliary brake assembly 6 through the linkage line 5 to make a braking action at the same time. Braking action, thereby realize the synchronous braking of wheel 15 under two rear car feet 13.

Referring to FIGS. 3 to 6 , the operating assembly 2 further includes a sliding member 22 , a safety locking member 24 , a reset elastic member 25 and a hook member torsion spring 26 . The sliding sleeve 21 includes a main body 211 slidably mounted on the side bar 111 up and down, and a receiving portion 212 fixed to the main body 211 and having an open side. The upper end of the main body 211 is extended outwardly with a brake operating portion 213 , so that it is convenient to hook the sliding sleeve 21 with fingers and pull it up. The sliding member 22 is accommodated in the side rod 111 and fixed with the sliding sleeve 21 , when the sliding sleeve 21 slides on the side rod 111 , the sliding member 22 slides along with the sliding sleeve 21 . The lower end of the sliding member 22 is provided with a wiring groove 221 , and the upper end of the connecting wire 3 (shown in FIG. 1 ) penetrates into the sliding member 22 through the wiring groove 221 and is fixed with the sliding member 22 . The hook part 23 , the safety locking part 24 and the restoring elastic part 25 are all disposed on the receiving part 212 . The hook member 23 is pivotally connected to the receiving portion 212 , and a lower end of the hook member 23 has an engaging hook 231 bent toward the side bar 111 . The side bar 111 is provided with a positioning part 111a and a long slot 111b that runs through the two opposite side walls of the side bar 111. The positioning part 111a is specifically a positioning hole. As shown in Figure 4-6, the positioning part 111a is located below the long slot 111b . The sliding sleeve 21 and the sliding member 22 are connected by connecting parts such as rivets. The opening of the long slot 111b enables the connecting parts such as rivets to slide up and down relative to the side bar 111 , thereby ensuring that the sliding sleeve 21 can drive the sliding member 22 smoothly. As shown in FIG. 4 , the hook member torsion spring 26 is disposed between the sliding sleeve 21 and the hook member 23 and provides elastic force to rotate the hook member 23 counterclockwise. When in the braking state, the engaging hook 231 can pass through the main body 211 of the sliding sleeve 21 under the elastic force of the hook part torsion spring 26 and snap into the positioning part 111a, and the hook part torsion spring 26 can make the hook The hook 23 is kept in an engaged state. In the case of non-braking, as shown in FIG. 6 , the position of the engaging hook 231 is lower than that of the positioning portion 111a, and the sliding sleeve 21 needs to be pulled upwards to make the position of the engaging hook 231 align with the positioning portion 111a and snap into it. When the upper end of the hook member 23 is pressed, the hook member 23 pivots to disengage the engaging hook 231 from the positioning portion 111a. The safety locking member 24 is slidably disposed on the upper end of the hook member 23 , and the safety locking member 24 has an abutting portion 241 located outside the opening edge of the receiving portion 212 and abutting against the receiving portion 212 . The restoring elastic member 25 is disposed between the safety locking member 24 and the hook member 23 , and the restoring elastic member 25 pushes the safety locking member 24 upward so that the abutting portion 241 of the safety locking member 24 can keep abutting against the receiving portion 212 . Due to the abutment of the safety locking part 24 against the receiving part 212, the hook part 23 cannot rotate freely, so the engaging hook 231 will not disengage from the positioning part 111a, the operating assembly 2 is locked on the side bar 111, and the stroller 1 can be Keep in the braking state (as shown in Figure 4).

Combining Figure 5 and Figure 6, when it is necessary to release the lock operation component 2, the user must first slide the safety lock 24 downwards so that the abutment 241 and the opening edge of the accommodating portion 212 are staggered, and then press the safety lock 24 inward to make the hook 23 pivot. When the engaging hook 231 disengages from the positioning portion 111 a, the sliding sleeve 21 can slide freely on the side bar 111 . In order to facilitate the downward sliding operation, the safety locking member 24 also has an outwardly protruding pressing portion 242 . The safety lock 24 can be regarded as a second safety lock to prevent accidental release of the stroller.

7 to 9, the driving part of the brake assembly 4 includes a linkage 42 slidingly accommodated in the wheel seat 171, a rotating member 43 pivotally arranged in the wheel seat 171, and a connecting member 43 connected to the connecting member 43. The connecting piece 44 between the movable piece 42. The connecting piece 44 is specifically an iron wire, one end of the connecting piece 44 is set on the rotating piece 43 , and the other end of the connecting piece 44 is positioned on the linkage piece 42 . When the rotating member 43 rotates positively (clockwise) at the position shown in FIG. 9 , the connecting member 44 can pull the linking member 42 to move down. The connecting wire 3 passes through a through hole 171a on the wheel base 171 and is fixed on the rotating member 43. When the connecting wire 3 is pulled upward, the rotating member 43 can be driven to rotate forward. In order to realize the wiring method shown in FIG. 9, the structure of the rotating member 43 is shown in FIG. In the wheel base 171 , the connecting wire 3 is inserted into the wiring hole 432 to be fixed with the rotating member 43 , and one end of the connecting member 44 is disposed on the base post 433 . Of course, a boss or a roller (not shown) can also be set in the wheel seat 171, so that the connecting wire 3 passed through can be fixed on the rotating member 43 after bypassing the boss or roller, which can also achieve the same effect. The brake member 41 is arranged on the wheel seat 171 to slide up and down. The brake member 41 includes a body 412 located in the wheel seat 171. The brake lever 411 is fixed through the lower end of the body 412, and the brake lever 411 passes through the rear of the wheel seat 171 to both sides. Located on the brake hubs 16 on both sides, the two sides of the wheel seat 171 are provided with elongated slots 171b for the brake lever 411 to slide up and down, so that the two wheels 15 can be braked at the same time. The first elastic member 40 is disposed between the driving member and the brake lever 411 . Specifically, the upper end of the first elastic member 40 elastically abuts against the linkage member 42 , and the lower end of the first elastic member 40 elastically abuts against the body 412 .

As shown in Figure 9, when braking is required, the connecting wire 3 is pulled upwards, the rotating member 43 rotates forward and pulls the connecting member 42 to move downward through the connecting member 44, and the moving connecting member 42 compresses the first elastic downward. part 40 and drives the body 412 to move downward through the first elastic part 40, and the brake lever 411 fixed with the body 412 moves downward simultaneously and engages with the brake hub 16 (shown in FIG. 8 ) to lock the wheel 15 to realize If the brake lever 411 is stuck on the brake teeth of the brake hub 16 (at this time, the user will mistakenly think that the brake has been activated because the sliding sleeve 21 has been pulled, which is a false brake phenomenon), once the brake lever 411 and the brake teeth are staggered Finally, the elastic force of the first elastic member 40 can drive the brake lever 411 to continue to move and engage with the brake hub 16 to complete the braking action. It can be seen that the arrangement of the above-mentioned first elastic member 40 can prevent the phenomenon of false braking caused by excessive braking force caused by the brake lever 411 resisting the brake teeth. As shown in FIG. 10 , the linkage wire 5 is fixed on the linkage piece 42 and passes through the through hole 171 a. When the linkage 42 moves downward, the linkage wire 5 is pulled downward.

Referring to Fig. 12 again, the upper end of the body 412 of the brake member 41 has two side arms 412a spaced apart from each other, the body 412 also includes a raised positioning post 412b between the two side arms 412a, and the lower end of the first elastic member 40 is positioned at The upper end of the positioning post 412b and the linking member 42 have a limiting portion 421 extending between the arms 412a on both sides and above the positioning post 412b. The upper end of the first elastic member 40 abuts against the limiting portion 421 .

Referring to FIG. 13 to FIG. 16 , the auxiliary brake assembly 6 includes an auxiliary driving member 61 and an auxiliary brake member, and the auxiliary brake member includes an auxiliary elastic member and an auxiliary brake lever 63 . The auxiliary driving member 61 is located in the wheel base 172 , and one end of the auxiliary driving member 61 is pivotally connected to the wheel base 172 . When the connecting line 5 is pulled up, the other end of the auxiliary driver 61 is driven to swing upwards. The auxiliary brake lever 63 has an arc-shaped curved structure, one end of which is coaxially connected with the auxiliary driver 61 in the wheel seat 172, and the other end of the auxiliary brake lever 63 is located outside the wheel seat 172 and is provided with a brake hub 16 which can be snapped into brake rib 631, the brake rib 631 does not engage with the brake hub 16 when the brake is not applied. As shown in FIG. 13 and FIG. 16 , the brake ribs 631 extend toward the brake hubs 16 on both sides, so that the two wheels 15 can be braked at the same time. The auxiliary elastic part is arranged between the auxiliary driving part 61 and the auxiliary brake lever 63. Specifically, the auxiliary elastic part is a torsion spring 62, and one end of the torsion spring 62 is fixed at the position where the auxiliary driving part 61 and the wheel base 172 are pivotally connected. A fixing hole 632 is defined on the brake lever 63 , and the other end of the torsion spring 62 passes through the fixing hole 632 . Referring to Figures 14 to 15, when braking, the other end of the auxiliary driver 61 swings upwards under the traction of the connecting line 5, so it pivots relative to the auxiliary brake lever 63, so that the other end of the auxiliary driver 61 is aligned with the auxiliary brake. The other ends of the rods 63 are far away from each other, and the torsion spring 62 is stretched to store elastic potential energy, and the torsion spring 62 can drive the brake rib 631 to swing toward the brake hub 16; as shown in Figure 15, if the brake rib 631 of the auxiliary brake lever 63 is stuck On the brake teeth of the brake hub 16 (the user has pulled the sliding sleeve 21 at this time, so the user will mistakenly think that the brake has been activated, which is a false brake phenomenon), once the brake edge 631 and the brake teeth are staggered, the elastic force of the torsion spring 62 can be Drive the brake rib 631 to continue to swing towards the brake hub 16 to complete the braking action. The structure of the auxiliary driving member 61 and the torsion spring 62 can prevent false braking caused by excessive braking force caused by the brake edge 631 against the brake teeth. A second elastic member 64 is also arranged between the wheel seat 172 and the auxiliary driving member 61, the upper end of the second elastic member 64 elastically abuts against the wheel seat 172, and the lower end of the second elastic member 64 elastically abuts against the bottom of the auxiliary driving member 61. At the other end, the second elastic member 64 pushes the auxiliary driving member 61 downward so that the other end of the auxiliary driving member 61 has a tendency to swing downward. As shown in Figure 16, specifically, the other end of the auxiliary driving member 61 has a raised fixing post 611, and looking back at Figure 15, the lower end of the second elastic member 64 is positioned on the fixing post 611, and the connecting line 5 is also fixed On the fixed post 611.

2, FIG. 10 and FIG. 15, when braking, the linkage 42 of the brake assembly 4 moves downward under the drive of the rotating piece 43 and the connecting piece 44, so that the brake lever 411 completes the braking action, and the linkage line 5 and the end fixed to the linkage 42 are also pulled downwards, causing the entire linkage line 5 to deviate from the auxiliary brake assembly 6 along the cross bar 14 to the brake assembly 4, so the auxiliary drive of the linkage line 5 and the auxiliary brake assembly 6 The fixed end of the part 61 is pulled up, and the auxiliary driving part 61 pulled by the connecting line 5 further drives the braking edge 631 to complete the braking action. Here it is the internal principle that the brake assembly 4 and the auxiliary brake assembly 6 can realize synchronous braking.

In this embodiment, the first elastic member 40 , the second elastic member 64 and the restoring elastic member 25 are all compression springs. The focus of the utility model is the braking mechanism, so other parts of the stroller 1 will not be introduced.

Compared with the prior art, in the brake mechanism of the children's stroller 1 of the present utility model, the operation component 2 is connected and interlocked with the brake component 4 through the connection line 3, and the brake component 4 is connected with the auxiliary brake component 6 through the linkage line 5 In parallel linkage, under normal circumstances, pulling the sliding sleeve 21 upward along the driver 11 can drive the brake lever 411 to engage with the corresponding brake hub 16 through the connecting wire 3 and the driving part, and at the same time, the brake rib 631 is also locked with the other brake hub 16. Together, the synchronous braking of the wheels 15 under the two rear car feet 13 has been realized. When the brake lever 411 abuts against the brake teeth of the brake hub 16 without engaging with the brake hub 16, since the first elastic member 40 is arranged between the driver and the brake lever 411, the elastic deformation of the first elastic member 40 makes the drive There may be a large relative movement margin between the component and the brake lever 411, and they will not be locked against each other. When the brake teeth and the brake lever 411 are slightly staggered, driven by the elastic force of the first elastic member 40 , the brake lever 411 will automatically engage with the brake hub 16 . In the same way, it can be seen that the setting of the torsion spring 62 also enables a movement margin between the auxiliary driving member 61 and the auxiliary brake lever 63 to drive the brake rib 631 to engage with the brake hub 16 . The children's stroller 1 effectively solves the problem of false brakes by setting a brake mechanism, ensures that the brakes are in place, and improves safety.

The brake assembly 4 and the auxiliary brake assembly 6 of the brake mechanism in this embodiment are respectively arranged under the two rear bicycle feet 13, but the brake assembly 4 and the auxiliary brake assembly 6 can also be arranged respectively under the two front bicycle feet 12, or The brake assembly 4 and the auxiliary brake assembly 6 are arranged on the front foot 12 and the rear foot 13 respectively. In addition, the number of the brake assembly 4 and the auxiliary brake assembly 6 is not limited to one, and the number can be set according to actual production needs.

In the above embodiments, the brake mechanism includes two different brake assemblies at the same time. In another implementation of the utility model, the brake mechanism may only include the operation assembly 2, the connecting wire 3 and one brake assembly. The brake assembly is arranged under the foot of the vehicle and is connected to the operating assembly 2 through the connecting wire 3. The structure and arrangement of the operating assembly 2 and the connecting wire 3 are the same as those in the above embodiments. The brake assembly also includes a driving element and a brake element. The brake element includes a brake lever and a first elastic element. The brake assembly can be the brake assembly 4 in the previous embodiment, or the auxiliary brake assembly 6 in the previous embodiment. When the brake assembly adopts the same structure as the auxiliary brake assembly 6 in the previous embodiment, the driving part, the brake part, the brake lever and the first elastic member of the brake assembly are respectively equivalent to the auxiliary driving part 61 and the auxiliary brake assembly 6 of the auxiliary brake assembly 6. Brake parts, auxiliary brake lever 63 and torsion spring 62, and the driver is no longer pulled by the connecting wire 5, but directly fixed with the connecting wire 3 and pulled by the connecting wire 3.

Shown in Fig. 17 to Fig. 26 is the second embodiment of the present utility model.

As shown in Figure 17, the overall structure of the children's stroller 1' in the present embodiment is the same as that in the first embodiment, and also includes a rider 11, a front frame 12 and a rear foot 13, and wheels 15 are all arranged under the front and rear feet. Wheel bases 173, 174 are respectively provided under the two rear feet 13, and a braking mechanism is also provided on the stroller 1' to realize braking. The brake mechanism in this embodiment includes two brake assemblies 7 respectively disposed on the two wheel bases 173 and 174 , and the same operation assembly 2 , connection wire 3 and linkage wire 5 as those in the first embodiment. The operating component 2 is set on the driver 11, the connection line 3 is connected between the operating component 2 and a brake component 7, and the linkage line 5 is connected between the two brake components 7. By operating the operating component 2, two brake components can be realized. Synchronized braking of component 7. The connection mode of the connecting line 3 with the operating assembly 2 and the arrangement of the connecting line 3 on the stroller 1' are the same as those in the first embodiment, and the arrangement of the linkage line 5 on the stroller 1' is also the same as that of the first embodiment. It is the same in the examples.

With reference to Fig. 18,19, wheel seat 173 is positioned at the middle of wheel 15, and two brake hubs 16 (only showing one among the figure) that are fixed with wheel 15 are positioned at the both sides of wheel seat 173 respectively. The brake assembly 7 includes two brake levers 71, and the two brake levers 71 can be stretched out relative to the wheel base 173 or retracted into the wheel base 173. The rods 71 are respectively inserted into the two brake hubs 16 so as to be engaged with the brake hubs 16, thereby making the wheels 15 unable to rotate and achieving braking. Continuing to refer to Fig. 19, the wheel seat 173 is formed by interlocking a larger first shell 173a and a smaller second shell 173b, and the wheel seat 173 is provided with two adjacent through holes 173c, 173d , The through holes 173c, 173d communicate with the inner space of the wheel base 173 .

22 to 25, the brake assembly 7 includes a driving part and a brake part, wherein the brake part includes two first elastic parts 72, two brake levers 71 and two sleeves 75, and the driving part includes a rotating part 74; , There is also a third elastic member 73 between the wheel seat 173 and the sleeve 75 . The wheel seat 173 has a guide tube 173e extending transversely, and the axle of the wheel 15 can pass through the guide tube 173e. The rotating member 74 is a turntable, with a round hole 740 in the center and sleeved on the guide tube 173e, so that the rotating member 74 can rotate in the wheel seat 173, and the central axis of rotation is parallel to the axial direction of the wheel 15. Two guide grooves 173 f are provided in the wheel seat 173 , and two sleeves 75 are slidably disposed in the guide grooves 173 f respectively. The sleeves 75 can slide relative to the wheel seat 173 along the axial direction of the wheel 15 . Two arc-shaped slots 741 are penetratingly formed on the rotating member 74 , and the two sleeves 75 are respectively accommodated in the two arc-shaped slots 741 , so the sleeves 75 will not interfere with the rotation of the rotating member 74 . Two sidewalls of each arc-shaped groove 741 are respectively formed with a first inclined surface 742 and a second inclined surface 743 , the first inclined surface 742 is located on the outer side, and the second inclined surface 743 is located on the inner side and has a corresponding inclination tendency to the first inclined surface 742 . The orientations of the slopes corresponding to the two arc-shaped slots 741 are opposite, that is, the first slope 742 and the second slope 743 on both sides of one arc-shaped slot 741 face the first housing 173a, The first slope 742 and the second slope 743 face toward the second housing 173b. The two sleeves 75 are oppositely arranged, and the sidewall of each sleeve 75 has two protruding abutting portions 751 , and the two abutting portions 751 abut against the corresponding first slope 742 and the second slope 743 respectively. When the rotating member 74 rotates forward (counterclockwise in FIG. 22), the first inclined surface 742 and the second inclined surface 743 toward the first housing 173a push the corresponding sleeve 75 to slide toward the first housing 173a, and at the same time, move toward the second Another first slope 742 and another second slope 743 of the housing 173b push the corresponding other sleeve 75 to slide toward the second housing 173b.

20, 23 to 25, the two brake levers 71 are slidingly connected to the two sleeves 75, specifically, the sleeve 75 is a hollow structure with one end open, and the open end of the sleeve 75 faces outward, and the sleeve 75 A guide groove 752 is defined on the side wall. One end of the brake lever 71 is provided with a sliding part 711, and one end of the brake lever 71 is accommodated in the sleeve 75, and the sliding part 711 is slidably arranged in the guide groove 752, so the brake part can slide along the axial direction of the wheel 15 in the sleeve 75 . Each first elastic member 72 is disposed between the corresponding brake lever 71 and the driving member, so that the action of the driver can be transmitted to the brake lever 71 through the elastic force of the first elastic member 72 and drive the brake lever 71 . Specifically, the first elastic member 72 is located in a corresponding sleeve 75 and elastically resists between the sleeve 75 and the brake lever 71 slidably connected to the sleeve 75 . The first housing 173a and the second housing 173b have holes respectively. Driven by the two first elastic members 72, the two brake levers 71 can respectively extend out of the two side surfaces of the wheel seat 173 and be inserted into the two brake hubs 16 to be connected with the two brake hubs 16. The brake hub 16 is engaged. Each third elastic member 73 is located in a guide groove 173f and elastically abuts between the wheel seat 173 and the corresponding sleeve 75. The third elastic member 73 provides the elastic force to make the sleeve 75 slide in the opposite direction, in other words, it allows The sleeve 75 corresponding to the first slope 742 and the second slope 743 facing the first housing 173a slides away from the first housing 173a, so that the other sleeve 75 corresponding to the first slope 742 and the second slope 743 facing the second housing 173b A sleeve 75 slides away from the second housing 173b. While the sleeve 75 slides in reverse, the rotating member 74 is driven to rotate in reverse through the conflict between the conflicting portion 751 and the inclined surface.

Referring to FIG. 20 to FIG. 22 , a first wiring hole 744 and a second wiring hole 745 are provided on the outer edge of the rotating member 74 , and the distance between the first wiring hole 744 and the second wiring hole 745 is roughly 180 degrees. One end of the connecting wire 3 passes through the through hole 173c into the wheel base 173 and extends into the first wiring hole 744 so as to be fixed to the rotating member 74 . One end of the connecting wire 5 is fixed in the second wiring hole 745 and passes through the through hole 173d of the wheel base 173 .

Combining Figure 17 and Figure 23 to Figure 25, when it is necessary to brake the stroller 1', the operating component 2 is operated, the connecting line 3 is pulled up and further drives the rotating member 74 to rotate forward, and the rotating member 74 rotates outward during the rotation process. Push the two sleeves 75, and the sliding of the two sleeves 75 drives the two first elastic members 72 to push the two brake levers 71 to extend out of the wheel seat 173 in two opposite directions. Engage to realize synchronous braking of the two wheels 15, thereby providing a more stable braking effect. Since the first elastic member 72 is arranged between the sleeve 75 and the brake member, even if there is a false brake phenomenon (as shown in FIG. 24 ) that the brake lever 71 and the brake hub 16 abut against the brake hub 16 at the beginning of braking (as shown in FIG. 24 ), After the brake hub 16 turns slightly to a certain angle, the brake lever 71 is pushed to be inserted into the brake hub 16 by virtue of the elastic force of the first elastic member 72 . It can be seen that the braking assembly 7 can effectively solve the problem of false braking.

As shown in FIG. 25 , another brake assembly 7 is arranged in another wheel seat 174 , and the connecting line 5 stretches into this wheel seat 174 and is fixed with the rotating member 74 of this brake assembly 7 . When another brake assembly 7 brakes, the connecting line 5 is pulled to drive this brake assembly 7 to brake synchronously.

The first elastic member 72 and the third elastic member 73 in this embodiment are also compression springs as in the previous embodiment.

Finally, it should be noted that, for the brake mechanism of the present utility model, the operating component 2 and the connection line 3 are not the only structures that drive the brake component to perform braking. The operation component 2 and the connection line 3 are only convenient for the user to realize braking and unlocking. A convenient way. The brake mechanism can only include the brake assembly without the operation assembly 2 and the connecting wire 3. By setting a pedal connected to the driver of the brake assembly on the wheel base, the brake assembly can also be driven to brake when the user steps on or toggles the pedal. Specifically, the pedal can be connected with the rotating member 43 in the first embodiment and drive the rotating member 43 to rotate forward, or the pedal can be directly connected with the linkage 42 and drive the linkage 42 to descend. When member 42 is connected, rotating member 74 and connecting member 44 also can be omitted in brake assembly 74. In the second embodiment, however, the pedal is connected to the rotating member 74 and drives the rotating member 74 to rotate forward.

What is disclosed above is only a preferred example of the utility model, and its function is to facilitate the understanding and implementation of those skilled in the art. Of course, the scope of rights of the utility model cannot be limited by this, so a patent application is made according to the utility model The equivalent changes made within the scope still belong to the scope covered by the present utility model.

Claims (30)

1. A brake mechanism, installed on a children's stroller, the children's stroller has a foot, the lower end of the foot is provided with a wheel seat and a wheel, and the wheel is fixed with a brake hub, It is characterized in that: the brake mechanism includes a brake assembly, the brake assembly includes a driving part and a brake part, and the brake part includes a first elastic part and a brake lever, and the driving part and the brake part are movably arranged on the wheel. The seat, the first elastic member is disposed between the driving member and the brake lever, and the first elastic member drives the brake lever to engage with the brake hub when the driving member moves. 2. The brake mechanism according to claim 1, wherein the brake member is arranged on the wheel seat to slide up and down, the brake lever passes through the wheel seat and is located on the brake hub, so that The driving part includes a linking part sliding up and down in the wheel seat, the upper end of the first elastic part elastically abuts against the linking part, and the first elastic part drives the brake lever to slide and engage. into the brake hub. 3. The brake mechanism according to claim 2, wherein the brake member further comprises a body located in the wheel seat, the brake lever is fixed at the lower end of the body, and the upper end of the body has two The side arms are spaced apart from each other, the body further includes a raised positioning column located between the two side arms, the lower end of the first elastic member is positioned on the positioning column, and the upper end of the linkage member has an extension The upper end of the first elastic member abuts against the limiting portion between the two side arms and above the positioning column. 4. The braking mechanism according to claim 2, wherein the driving member further comprises a rotating member and a connecting member, the rotating member is pivotally arranged in the wheel seat, and the connecting member is connected to the When the rotating member rotates, the connecting member pulls the connecting member. 5. The brake mechanism according to claim 4, wherein the connecting piece is an iron wire, one end of the iron wire is wound on the rotating member, and the other end of the iron wire is positioned on the on the linkage. 6. The brake mechanism according to claim 1, wherein the driving member is located in the wheel seat, and one end of the driving member is pivotally connected to the wheel seat, and one end of the brake lever is pivotally connected In the wheel seat, the other end of the brake lever is located outside the wheel seat and is provided with a brake rib that can be snapped into the brake hub, and the other end of the driving member passes through the first The elastic member drives the brake rib to swing towards the brake hub. 7 . The brake mechanism according to claim 6 , wherein the brake lever is pivotally connected to the wheel seat coaxially with the driving member. 8 . 8. The brake mechanism according to claim 6, wherein the first elastic member is a torsion spring, one end of the torsion spring is fixed to the driving member, and a fixing hole is provided on the brake lever, so that The other end of the torsion spring passes through the fixing hole. 9. The brake mechanism according to claim 6, wherein a second elastic member is provided between the wheel seat and the driving member, and the second elastic member pushes down the driving member so that The other end of the driving member has a downward swing tendency. 10. The braking mechanism according to claim 1, wherein the driving member comprises a rotating member rotatably arranged in the wheel base, and when the rotating member rotates, the first elastic member drives the The brake lever is engaged with the brake hub. 11. The brake mechanism according to claim 10, wherein the rotating member is a turntable. 12. The brake mechanism according to claim 10, wherein the brake member further comprises a sleeve slidably disposed in the wheel seat, the sleeve is arranged between the rotating member and the brake lever Between, one end of the brake lever is slidably connected to the sleeve, the other end of the brake lever extends toward the brake hub and can pass through the wheel seat, and the first elastic member elastically abuts against the sleeve Between the barrel and the brake lever, the rotating member rotates and drives the sleeve, and drives the brake lever to engage with the brake hub through the first elastic member. 13. The brake mechanism according to claim 12, wherein the rotating member has a first inclined surface that pushes the sleeve outward when the rotating member rotates, and when the rotating member rotates, the The first inclined plane drives the sleeve, and pushes the brake lever to insert into the brake hub through the first elastic member. 14. The brake mechanism according to claim 13, characterized in that: the rotating member is provided with an arc-shaped groove for accommodating the sleeve, and the rotating member also has a second slope corresponding to the first slope. slope, the first slope and the second slope are respectively located on both sides of the arc groove, the sleeve has two protruding conflicting parts, and the two conflicting parts are respectively in contact with the first slope and the on the second slope. 15. The brake mechanism according to claim 12, characterized in that: the sleeve is a hollow structure with one end open, and a guide groove is provided on the side wall of the sleeve, and a sliding part is provided at one end of the brake lever , one end of the brake lever is accommodated in the sleeve, the sliding part is slidably disposed in the guide groove, and the first elastic member is located in the sleeve. 16 . The braking mechanism according to claim 13 , wherein a third elastic member is provided between the wheel base and the sleeve, and the third elastic member pushes the sleeve to slide inward. 17 . 17. The brake mechanism according to claim 13, wherein the brake member comprises two brake levers, two first elastic members and two sleeves, and the two sides of the rotating member are respectively arranged There is the first slope, the two sleeves are respectively corresponding to the two first slopes, the two brake parts are respectively slidably connected to the two sleeves, and the two first elastic parts are rotated when the rotating part rotates Push the two brake levers respectively to protrude from the two sides of the wheel seat. 18. The braking mechanism according to claim 1, wherein the lower end of the vehicle foot is provided with the wheel seat and two wheels, the two wheels are respectively provided with the brake hub, and the brake member includes two For the first elastic member and the two brake levers, the driving member simultaneously drives the two first elastic members to drive the two brake levers to respectively engage with the two brake hubs on both sides. 19. The brake mechanism according to claim 1, characterized in that: the brake mechanism further comprises an operating component and a connecting wire, the operating component comprises an operating part and a locking part, and the operating part is arranged on the stroller The driver, the locking part is connected to the operating part, the driver is provided with a positioning part to engage with the locking part, one end of the connecting line is connected to the operating component, and the connecting line is The other end is connected to the driving part, and the operating part pulls the connecting wire so that one end of the locking part snaps into the positioning part, and the other end of the locking part is operated to move the locking part away from the positioning department. 20. The brake mechanism according to claim 19, wherein the operating member is a sliding sleeve slidably sleeved on the driver, and the locking member is a hook pivotally connected to the sliding sleeve After the sliding sleeve pulls the connecting line to move, one end of the hook part is locked into the positioning part, and when the other end of the hook part is pressed, the hook part pivots away from the positioning part . 21. The brake mechanism as claimed in claim 19, wherein the connecting wire is arranged inside the driver and the foot of the bicycle. 22. The brake mechanism according to claim 20, characterized in that: a brake operating portion is provided extending outward from the upper end of the sliding sleeve. 23. The braking mechanism according to claim 20, wherein the operating assembly further includes a sliding piece slidably arranged in the driver, the sliding piece is fixed to the sliding sleeve, and one end of the connecting wire fixed to the slider. 24. The braking mechanism according to claim 20, wherein one end of the hook has a hook that can be inserted into the positioning portion, and the other end of the hook is slidably provided with a safety lock The safety locking part has an abutting part that abuts against the sliding sleeve and restricts the pivoting of the hook part, and the safety locking part can slide to make the abutting part disengage from the sliding sleeve. 25. The braking mechanism according to claim 19, wherein the operating assembly further comprises a safety lock, the safety lock is slidably arranged at the other end of the lock, and the safety lock has The abutting part abuts against the operating part and restricts the action of the locking part, and the safety locking part can slide to disengage the abutting part from the operating part. 26. The brake mechanism according to claim 24, characterized in that: the operating assembly further comprises a restoring elastic member arranged between the safety locking member and the hook member, and the restoring elastic member pushes the The safety locking member makes the abutting portion abut against the sliding sleeve. 27. The brake mechanism according to claim 24, wherein the sliding sleeve includes a main body part which is set on the driver and a receiving part which is fixed to the main body part and has a side opening, and the hook part and the The safety locking member is disposed on the receiving portion, and the abutting portion is abutted against an edge of the receiving portion. 28. A stroller for children, including a driver and a foot, the lower end of the foot is provided with a wheel seat and a wheel, and a brake hub is fixed on the wheel, and it is characterized in that: it also includes a wheel according to any one of claims 1-27. The brake mechanism mentioned in item. 29. A stroller for children, comprising a driver and at least two feet, wheel bases and wheels are arranged at the lower ends of the two feet, brake hubs are fixed on the wheels, and it is characterized in that: it also includes In the brake mechanism described in any one of the above, the brake assembly is arranged on the wheel base of one of the bicycle feet, The wheel seat of the other said bicycle foot is provided with an auxiliary brake assembly, and the auxiliary brake assembly includes an auxiliary driving part and an auxiliary brake part, and the auxiliary brake part includes an auxiliary elastic part and an auxiliary brake lever, and the auxiliary driving part One end of the auxiliary brake lever is pivotally connected to the corresponding wheel seat, one end of the auxiliary brake lever is pivotally connected to the corresponding wheel seat, and the other end of the auxiliary brake lever is located outside the wheel seat and is provided with a snap-on into the brake edge of the brake hub, the secondary elastic member is arranged between the secondary driver and the secondary brake lever, and the stroller also includes a connecting line, one end of which is fixed to the The driving part of the brake assembly, the other end of the connecting line is fixed to the other end of the auxiliary driving part, and the other end of the auxiliary driving part drives the brake edge through the secondary elastic part when it swings up. Swing towards the corresponding said brake hub. 30. A stroller for children, including a driver and at least two feet, wheel bases and wheels are arranged at the lower ends of the two feet, brake hubs are fixed on the wheels, and it is characterized in that it also includes a connecting line and such as rights The brake mechanism according to any one of claims 10-17, the brake mechanism includes two brake assemblies, the two brake assemblies are respectively arranged on the wheel seats of the two bicycle feet, and the connecting line The two ends of the brake assembly are respectively fixed to the rotating parts of the two brake assemblies, and when one of the rotating parts rotates, the other rotating part is driven to rotate through the connecting line.