CN105564488B - Brakes and Carts - Google Patents

Abstract

The present invention discloses a brake device, including a first brake member, a second brake member and a brake mechanism; the first brake member is arranged on a handle bracket of a cart; the second brake member is arranged on a wheel bracket of the cart; the brake mechanism is installed corresponding to the wheel of the cart, the first brake member is connected to the brake mechanism to drive the brake mechanism to a first locking position, and the second brake member is connected to the brake mechanism to drive the brake mechanism to a first locking position. During use, if the cart needs to be decelerated or temporarily braked, the first brake member or the second brake member is operated to drive the brake mechanism to the first locking position. After releasing the first brake member or the second brake member, the brake mechanism quickly returns to its original position, and the cart can be quickly pushed again. It is more convenient for people who are walking while pushing the cart. The first brake member and the second brake member can respectively realize the functions of hand brake and foot brake, and the operation is convenient. The present invention also discloses a cart with a brake device.

Description

Brakes and Carts

technical field

The invention relates to the technical field of brake equipment, in particular to a brake device with both hand brake and foot brake functions and a cart with the brake device.

Background technique

Many children's vehicles are equipped with wheels and brake devices to realize the positioning of the brakes of the children's vehicles. Among them, the brake device on the stroller is more valued, because the stroller is mostly used outdoors, it often needs to stop the stroller and fix it at a certain position, or in some cases need to pause or slow down, After that, it can continue to move quickly. In order to ensure the convenience of the operation of the stroller and the safety of the children riding on it, the function of the brake device is particularly important.

Most of the brake devices of existing strollers are operated by feet, that is, when the user steps on the brake pedal, the brake lever formed by the protrusion on the brake pedal is inserted into the brake groove provided on the wheel, and the wheel cannot rotate at this time; When the brake pedal is lifted up, the brake lever withdraws from the brake groove, so that the wheel can rotate freely. However, in actual use, sometimes it is only necessary to decelerate the stroller or temporarily brake it, and then it can be quickly re-promoted. Therefore, the way of operating the brake device only by feet is extremely difficult for people who are walking on the stroller. inconvenient.

Therefore, it is necessary to provide a brake device and a cart that are easy to operate and have the functions of hand brake and foot brake, so as to solve the above-mentioned deficiencies in the prior art.

Contents of the invention

The object of the present invention is to provide a brake device which is easy to operate and has the functions of hand brake and foot brake.

Another object of the present invention is to provide a pushcart, which has a brake device that has the functions of a hand brake and a foot brake, and is easy to operate.

In order to achieve the above object, the technical solution of the present invention is: provide a kind of brake device, be applicable to cart, cart comprises wheel support and the handle support that connects wheel support, and brake device comprises a first brake part, a second brake part And brake mechanism; the first brake part is located on the handle bracket; the second brake part is located on the wheel bracket; the brake mechanism is installed corresponding to the wheel of the cart, wherein the first brake part is connected with the brake mechanism to drive the brake mechanism in a first In a locked position, the second brake component is connected with the brake mechanism to drive the brake mechanism to be in the first locked position.

Preferably, the first brake member or the second brake member can drive the brake mechanism to switch from the first locking position to a second locking position.

Preferably, the first brake part includes a first operating part and a first connecting part, the first connecting part connects the first operating part and the brake mechanism, and operating the first operating part makes the first connecting part drive the brake mechanism to the first lock position, or release the first operating member to return the brake mechanism to its original position.

Preferably, the second braking member includes a second operating member, which is operated to drive the brake mechanism to the first locking position, or release the second operating member to return the brake mechanism to its original position.

Preferably, the second operating member is connected to the first braking member.

Preferably, the braking mechanism includes a driving part, a driving pin and a brake combination, the first braking part or the second braking part drives the driving pin through the driving part, so that the braking combination is actuated to be in the first locking position or is activated by the second braking position. A locked position is converted to a second locked position.

Preferably, the driving member, the brake assembly and the wheels are coaxially arranged.

Preferably, the first braking member is connected to the driving member through the second braking member.

Preferably, the first brake member is operated to drive the drive member, and the drive member drives the drive pin to move, so that the brake combination is in the first locking position, and the second brake member is operated to drive the drive member, and the drive member drives the drive pin to move, so that The brake assembly is in the first locking position or shifted from the first locking position to the second locking position.

Preferably, the side wall of the driving member is provided with a driving slope, and the driving slope is in conflict with the end of the driving pin.

Preferably, the side wall of the driving member is further provided with a positioning groove on one side of the driving slope, and when the brake mechanism is in the second locking position, the driving pin engages with the positioning groove.

Preferably, operating the first brake member or the second brake member can make the driving slope push the driving pin to move, so that the brake mechanism is in the first locking position, and when the driving pin crosses the highest point of the driving slope and engages with the positioning groove , the brake mechanism is in the second locked position.

Preferably, the braking mechanism further includes a brake seat fixed between the driving member and the wheel, and the driving pin is movably arranged in the brake seat.

Preferably, the brake mechanism further includes a first elastic member, and the first elastic member interferes between the driving pin and the brake seat.

Preferably, the brake assembly includes a brake pad driver and a brake pad, the brake pads are fixed to the edge of the brake pad driver in a staggered manner and protrude to both sides thereof, and one end of the brake pad driver is pivotally connected to the adjacent wheel of the brake seat On the side wall, the other end of the brake pad driver is in conflict with the drive pin, and the drive pin moves to push the brake pad driver to pivot and expand outward so that the brake assembly is in the first locking position.

Preferably, both ends of the driving pin are in conflict with the driving member and the brake pad driving member respectively, the driving member rotates to drive the driving pin to move, and the driving pin pushes the brake pad driving member to expand so that the brake assembly is at the first locking position.

Preferably, when the driving pin is pushed by the driving member and continues to slide to engage with the wheel, the braking mechanism is in the second locking position.

Preferably, the wheel has a brake hub, and a plurality of brake locking holes are arranged on the brake hub. When the brake pad expands and touches the inner wall of the brake hub, the brake mechanism is in the first locking position, and when the driving pin engages the brake locking hole, the brake The mechanism is in the second locked position.

Preferably, the driving pin is provided with a driving surface with an inclined structure, and the brake pad driving member is protruded with a driven surface matching the driving inclined surface, and the driven surface is arranged outside the driving pin and its end touches the driving surface.

Preferably, the brake pad driver has a waist-shaped structure, one end of the two brake pad driver is coaxially pivoted to the side wall of the brake seat, and the other ends of the two brake pad driver are in contact with the drive pin.

Preferably, the brake assembly further includes a second elastic member connected to the brake pad driver, and the second elastic member is used to reset the brake pad driver.

Preferably, the brake pad has an elastic structure.

Correspondingly, the present invention also provides a stroller, which includes a wheel bracket, a handle bracket connected to the wheel bracket, and two wheels connected coaxially, and also includes the brake device as above.

Preferably, each wheel is correspondingly equipped with a brake mechanism, and the two brake mechanisms are connected by a linkage, wherein one of the brake mechanisms is connected to the first brake piece and the second brake piece, and the first brake piece and the second brake piece are connected by a linkage. The moving part synchronously drives the two brake mechanisms to be in the first locking position or to switch from the first locking position to the second locking position.

Compared with the prior art, since the brake device of the present invention includes a first brake part, a second brake part and a brake mechanism; the first brake part is arranged on the handle bracket of the cart; the second brake part is located on the cart's On the wheel bracket; the brake mechanism is installed corresponding to the wheel of the cart, the first brake part is connected with the brake mechanism to drive the brake mechanism to be in a first locked position, and the second brake part is connected with the brake mechanism to drive the brake mechanism to be in the first locked position . In use, if the cart needs to be decelerated or temporarily braked, the first brake or the second brake is operated to make the driving brake mechanism in the first locking position, and after the first brake or the second brake is released, The brake mechanism quickly returns to the original position, and can quickly push the cart again. It is more convenient for people who are pushing the cart. The first brake part and the second brake part can realize the functions of hand brake and foot brake respectively. convenient. On the other hand, in use, if it is necessary to lock the wheels of the cart, continue to operate the first brake part or the second brake part, so that the brake mechanism is converted from the first locking position to the second locking position, so as to realize the function of immediate braking . Correspondingly, the cart with the braking device of the present invention also has the same technical effect.

Description of drawings

Fig. 1 is a structural schematic diagram of a first brake member mounted on a trolley.

Fig. 2 is a structural schematic diagram of the second brake member installed on the trolley.

Fig. 3 is a structural schematic diagram of another angle of Fig. 2 .

FIG. 4 is a schematic structural diagram of the second brake member and the corresponding main brake mechanism in FIG. 3 .

Fig. 5 is a structural schematic diagram of another angle of Fig. 4 .

Fig. 6 is a schematic diagram of the connection state of the brake pad in Fig. 4 .

Fig. 7 is a structural schematic diagram of removing the brake seat in Fig. 6 .

FIG. 8 is a structural schematic diagram of another angle of FIG. 7 .

Fig. 9 is a structural schematic diagram of removing the brake seat in Fig. 4 .

FIG. 10 is a structural schematic diagram of another angle of FIG. 9 .

Fig. 11 is a side view of the brake driving part and the second brake part in Fig. 10 .

Fig. 12 is a schematic structural view of the driving pin in Fig. 10 .

Fig. 13 is a sectional view of the main brake mechanism in Fig. 4 in a normal state.

Fig. 14 is a cross-sectional view of the main brake mechanism in Fig. 13 at the first locking position.

Fig. 15 is a cross-sectional view of the main brake mechanism in Fig. 14 at the second locking position.

Fig. 16 is a schematic structural view of the slave brake mechanism in Fig. 2 .

Fig. 17 is a structural schematic diagram of removing the brake seat in Fig. 16 .

Fig. 18 is a structural schematic diagram of the brake driving part in Fig. 17 .

FIG. 19 is a sectional view of the braking mechanism in FIG. 16.

Detailed ways

Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

As shown in FIGS. 1-3 , the brake device provided by the present invention is suitable for a cart 10, which includes a wheel bracket 12 and a handle bracket 11 connected to the wheel bracket 12. FIG. 2 only shows the part of the cart 10. The wheel support 12 is provided with two coaxially connected wheels 14 at the lower end of the wheel support 12 . The braking device comprises a first brake part 20, a second brake part 30 and at least one brake mechanism; the first brake part 20 is located on the handle bracket 11; the second brake part 30 is located on the wheel bracket 12; the brake mechanism corresponds to The wheels 14 of the trolley 10 are installed, wherein the first brake member 20 is connected with the brake mechanism to drive the brake mechanism to be in a first locking position, and the second brake member 30 is connected with the brake mechanism to drive the brake mechanism to be in the first lock position. The above-mentioned braking mechanism can be installed on the front wheel or the rear wheel of the cart according to actual needs, so as to achieve the function of front wheel brake or rear wheel brake.

As shown in FIGS. 1-3 , in one embodiment, the brake device includes two brake mechanisms 40 and 50 . The lower end of the wheel bracket 12 is provided with a connecting shaft 13, and the two wheels 14 are respectively connected to the two ends of the connecting shaft 13, and the two braking mechanisms 40, 50 corresponding to the two wheels 14 are installed on the connecting shaft 13. 40 and 50 are connected by a linkage 60, wherein a brake mechanism 40 connects the first brake 20 and the second brake 30, and the first brake 20 or the second brake 30 drives the two brakes synchronously through the linkage 60. The brake mechanisms 40, 50 are in the first locked position or switched from the first locked position to a second locked position.

Certainly, the connection method is not limited to the above, and the first brake member 20 and the second brake member 30 are connected to the brake mechanism 50 to have the same effect.

As shown in FIGS. 1-5 , the first brake member 20 includes a first operating member 21 and a first connecting member 22, the first operating member 21 is arranged on the handle bracket 11, and the first connecting member 22 connects the first operating member 21 and the first connecting member 22. The brake mechanism 40 operates the first operating member 21 to make the first connecting member 22 drive the brake mechanisms 40 and 50 to the first locking position, or release the first operating member 21 to return the brake mechanisms 40 and 50 to their original positions. In another embodiment, the first connecting member 22 connects the first operating member 21 and the second braking member 30, and the first operating member 21 is operated to make the first connecting member 22 drive the second braking member 30, through which the second braking member 30 to drive the braking mechanism 40, 50, and then achieve the braking effect.

The second brake member 30 includes a second operating member, the second operating member is connected to the brake mechanism 40, the second operating member is operated to drive the brake mechanism 40, 50 to the first locking position, or the second operating member is released to make the brake mechanism 40 , 50 return to the original position. In another embodiment, the second brake member 30 also includes a second connecting member (not shown in the figure), used to connect the second operating member and the brake mechanism 40, 50, when the second operating member is operated, the second connecting member The part is driven by the second operating part to drive the brake mechanism 40, 50 to act, thereby achieving the braking effect.

In the present invention, the first locking position makes the cart appear in a decelerated braking state, and the brake mechanisms 40, 50 can be drum brakes or disc brakes, for example; the second locking position makes the wheels of the cart reach the braking state of immediate locking.

As shown in FIG. 1 and FIG. 5, the second operating member is connected to the first operating member 21 through the first connecting member 22, and the second operating member is correspondingly connected to the brake mechanism 40. Therefore, operating the first operating member 21 or the second operating member The operating member can synchronously drive the two brake mechanisms 40 and 50 to be in the first locking position.

In conjunction with Fig. 3-Fig. 4 and Fig. 16, in the present invention, the braking mechanism corresponding to the right side wheel 14 in Fig. 3 forms the master braking mechanism 40, and the braking mechanism corresponding to the left side wheel 14 in Fig. 3 forms the slave braking mechanism 50. The structures of the master brake mechanism 40 and the slave brake mechanism 50 can be identical, or can be designed separately. Below in conjunction with the accompanying drawings 4-shown in FIG. 19 , the structures of the master brake mechanism 40 and the slave brake mechanism 50 will be described respectively.

4-7, the main brake mechanism 40 includes a brake seat 41 fixed on the connecting shaft 13, and also includes a driving member 42, a driving pin 43 and a brake assembly 44 arranged in sequence; the driving member 42 is rotatably arranged on the On the connecting shaft 13 and connected with the first operating member 21 and the second operating member; the brake seat 41 is fixed between the driving member 42 and the wheel 14, the brake assembly 44 is arranged on the side of the brake seat 41 adjacent to the wheel 14, and the driving pin 43 is movably arranged in the brake seat 41; the first operating member 21 or the second operating member drives the driving pin 43 to slide through the driving member 42, so that the brake combination 44 is actuated so that the main brake mechanism 40 is in the first locking position or by The first locked position is converted to the second locked position.

Wherein, the driving member 42, the brake assembly 44 and the wheel 14 are arranged coaxially. And the first operating member 21 is connected to the driving member 42 through the second operating member. Specifically, the first operating member 21 is connected to the second operating member through the first connecting member 22, the operating first operating member 21 can drive the driving member 42 to rotate, and the driving member 42 drives the driving pin 43 to move, so that the brake assembly 44 is in the first position. A locked position, operate the second operating member to drive the driving member 42, and the driving member 42 drives the driving pin 43 to move, so that the brake assembly 44 is in the first locked position or switched from the first locked position to the second locked position.

Continuing to show in FIG. 4-FIG. 7, preferably, the second operating member and the driving member 42 are integrally formed, one end of the first connecting member 22 is connected to the first operating member 21, and the other end passes through the wheel bracket 12 and passes through Out of the brake seat 41, it is connected to the second operating member (see Figure 5) through the bottom of the brake seat 41, so the first operating member 21 is connected with the driving member 42 through the first connecting member 22, the second operating member, and the second operating member is operated. When one operating member 21 is used, the first connecting member 22 and the second operating member can be used to drive the driving member 42 to rotate, so that the master brake mechanism 40 and the slave brake mechanism 50 are in the first locking position, that is, the drum brake is realized. In another embodiment, the master brake mechanism 40 and the slave brake mechanism 50 are in the first locked position, realizing disc brake.

As shown in Fig. 5-Fig. 6 and Fig. 10, the wheel 14 has a brake hub 141, and the brake hub 141 is provided with a plurality of brake locking holes 1411. When the main brake mechanism 40 is in the first locking position, the brake assembly 44 is in contact with the brake hub 141 ; when the main brake mechanism 40 is switched from the first locking position to the second locking position, the driving pin 43 engages with the brake locking hole 1411 .

6-7, the main brake mechanism 40 also includes a first elastic member 45, the driving pin 43 is slidably disposed in the brake seat 41, and the first elastic member 45 interferes between the driving pin 43 and the brake seat 41. , the first elastic member 45 is used to reset the driving pin 43 .

6-9, the brake assembly 44 includes a brake pad driver 441 and a brake pad 442, the brake pads 442 are alternately fixed on the edge of the brake pad driver 441 and protrude to both sides thereof, the brake pad driver One end of 441 is provided with a driven surface 4411 matched with the drive pin 43 (details will be described later), and the other end of the brake pad driver 441 is provided with a pivot hole 4412, and a connecting piece (not shown) passes through the The pivot hole 4412 is pivotally connected to the side wall of the brake seat 41 adjacent to the wheel 14. The driven surface 4411 of the brake pad driver 441 is in conflict with the drive pin 43, and the drive pin 43 slides to push the brake pad driver 441 to pivot. And make it pivot and expand outward, so that the surface of the brake pad 442 is in contact with the inner wall of the brake hub 141 to realize drum braking. At this time, the main brake mechanism 40 is in the first locking position; the driving pin 43 continues to slide and engages with the brake lock. When the hole 1411 is opened, the main brake mechanism 40 is in the second locking position, and the drum brake and wheel locking are realized at this moment.

Preferably, the brake pad 442 is made of a soft material, such as rubber, and thus has an elastic structure, so that the brake pad 442 has a high wear resistance.

As shown in Fig. 8-Fig. 10 and Fig. 12, the brake assembly 44 has two brake pad driving parts 441, both of which are waist-shaped or semicircular in structure, and the edges of the two brake pad driving parts 441 are respectively fixed with Two brake pads 442, one end of the two brake pad driving parts 441 are coaxially pivoted to the side wall of the brake seat 41 through the pivot hole 4412, there is a certain gap between the other ends of the two brake pad driving parts 441, and each brake An end of the sheet driving member 441 away from the pivot hole 4412 has a bent and protruding driven surface 4411 , and the driven surface 4411 is substantially parallel to the surface of the driving pin 43 .

A protruding portion 431 protrudes from the driving pin 43 , and a driving surface 432 with an inclined structure is formed on a side of the protruding portion 431 .

After installation, the engaging end 433 of the driving pin 43 is inserted in the gap between the two brake pad driving parts 441, and the driven surface 4411 is wrapped around the driving pin 43, and the end of the driven surface 4411 is in contact with the driving Surface 432; when the driving pin 43 slides, the driving surface 432 pushes the end of the driven surface 4411 so that the two brake pad drivers 441 pivot and expand outward, so that the surface of the brake pad 442 is in contact with the brake hub 141 The main brake mechanism 40 is in the first locking position; the driving pin 43 continues to slide so that the driven surface 4411 is wrapped outside the raised portion 431, and the engaging end 433 of the driving pin 43 protrudes from the two brake pads to drive The component 441 is engaged with the brake locking hole 1411 to realize the drum brake and the wheel locking. At this time, the main brake mechanism 40 is switched from the first locking position to the second locking position.

The brake assembly 44 also includes a second elastic member 443, the two ends of the second elastic member 443 are respectively connected to one end of the two brake pad driving parts 441 close to the driven surface 4411, the second elastic part 443 is used to make the brake pad driving part 441 reset.

As shown in Fig. 11 and Fig. 12, the side wall of the driving member 42 is provided with a helical driving slope 421, and the side wall of the driving member 42 is also provided with a positioning groove 422 on one side of the driving slope 421, and the driving slope 421 Contradicting the other end of the opposite engaging end 433 of the driving pin 43, when the driving member 42 rotates, the driving slope 421 pushes the driving pin 43 to slide, and when the driving pin 43 crosses the highest point of the driving slope 421 and is stuck in the positioning groove 422 When it is inside, the driving pin 43 is engaged in the brake locking hole 1411 of the wheel 14, and the main brake mechanism 40 is in the second locking position.

And in one embodiment of the present invention, the movement stroke of the first operating member 21 is set so that when the first operating member 21 is operated, the driving pin 43 can only be pushed and slid by the driving slope 421. Therefore, by operating the first operating member 21 Only the main brake mechanism 40 can be in the first locking position, that is, the drum brake can be realized; and the operation of the second operating member can make the driving slope 421 push the driving pin 43 to slide and can make the driving pin 43 cross the highest point of the driving slope 421 and get stuck. Fitting into the positioning groove 422, the drum brake and the wheel are locked at this moment, that is, the main brake mechanism 40 can be in the first locking position or switched from the first locking position to the second locking position by operating the second operating member.

The braking process of the main brake mechanism 40 of the present invention will be described below with reference to FIGS. 5-8 , and 13-15 .

As shown in FIG. 13 , when the main brake mechanism 40 is in a normal state, the engaging end 433 of the driving pin 43 is located in the brake seat 41 , and the end of the driven surface 4411 of the brake pad driving member 441 is in contact with the driving surface 432 .

When the first operating member 21 is operated, the first operating member 21 pulls the second operating member through the first connecting member 22, so that the second operating member pivots in the direction of the arrow shown in FIG. 5 , thereby driving the driving member 42 to rotate. During the process, the driving slope 421 of the driving member 42 generates a horizontal driving force on the driving pin 43, thereby pushing the driving pin 43 to slide horizontally. When the driving pin 43 slides, the driving surface 432 pushes the end of the driven surface 4411 to make the two The brake pad driver 441 is pivoted to expand outward, so that the surface of the brake pad 442 collides with the inner wall of the brake hub 141 to realize drum braking. During this process, the first elastic member 45 is compressed. When the driving pin 43 abuts against the top of the driving slope 421 , the main brake mechanism 40 is in the first locking position, as shown in FIG. 14 .

In the present invention, the movement stroke of the first operating member 21 can only make the driving member 42 turn over a certain angle, that is, it can only make the driving pin 43 move from the lowest end of the driving slope 421 to the topmost end, so the first operating member 21 can only Make the main brake mechanism 40 in the first locked position.

After canceling the operation on the first operating member 21 , the second operating member resets, the first elastic member 45 resets and generates a reset force on the driving pin 43 , so that the driving pin 43 slides back to the normal state shown in FIG. 13 . At this time, the pushcart 10 can be quickly re-promoted, which is very convenient for people walking on the pushcart 10 .

When the second operating member is operated, the second operating member drives the driving member 42 to rotate, and the driving member 42 rotates to drive the driving pin 43 to slide and finally make the main brake mechanism 40 in the first locking position. The process is as above, and will not be repeated.

In the first locking position shown in FIG. 14 , continue to drive the second operating member to rotate, and the second operating member continues to push the driving pin 43 to slide so that the engaging end 433 of the driving pin 43 passes through the brake seat 14 and engages with the brake. The locking hole 1411 realizes the locking of the wheel 14. At this time, the highest point of the driving slope 421 passes over the driving pin 43, so that the end of the driving pin 43 is stuck in the positioning groove 422, and the main brake mechanism 40 starts from the first locking position. Switch to the second locked position, as shown in Figure 15. At this time, when the cart 10 stops moving and is fixed at a certain position, the reliability and safety of the cart 10 in use are guaranteed.

When the second operating member is operated in the opposite direction, the second operating member pivots so that the highest point of the driving slope 421 passes over the driving pin 43, and the end of the driving pin 43 breaks away from the positioning groove 422, and can be reset to the first position shown in Figure 14. Locked position and normal state shown in Figure 13.

Referring to FIGS. 16-19 , the structure of the brake mechanism 50 of the present invention will be described.

The brake mechanism 50 includes a brake seat 51, a driving member 52, a driving pin 53, a brake assembly 54 and a first elastic member 55, wherein the brake assembly 54 includes a brake pad driver 541, a brake pad 542 and a second elastic member 543; The structure and installation method of the seat 51, the driving pin 53, the brake assembly 54, and the first elastic member 55 are all the same as those of the main brake mechanism 40, and will not be repeated here.

As shown in Figure 18, the structure and installation method of the driving member 52 are slightly different from the driving member 42 of the above-mentioned main brake mechanism 40. Specifically, the driving member 52 is rotatably arranged, and the rotating direction of the driving member 52 is just opposite to that of the driving member 42 of the main brake mechanism 40. One end of the linkage member 60 is connected to the driving member 52, and the other end is connected to the second Operation piece. A driving inclined surface 521 is provided on a side wall of the driving member 52 , and the driving inclined surface 521 interferes with the end of the driving pin 53 . In this way, when the first operating member 21 or the second operating member is operated, the driving member 52 can be synchronously driven to rotate through the linkage member 60 , thereby driving the brake assembly 54 to realize drum braking or wheel locking.

Referring again to 16-shown in FIG. 19 , the braking process of the slave braking mechanism 50 will be described.

When operating the first operating member 21 or the second operating member, the first operating member 21 pulls the second operating member to rotate through the first connecting member 22, and the second operating member drives the driving member 42 to rotate, and at the same time pulls the driving member 42 through the linkage member 60. The driving member 52 rotates, and the rotating directions of the driving members 42 and 52 are opposite. The driving member 52 rotates so that the driving slope 521 pushes the driving pin 53 to slide horizontally, and the driving pin 53 pushes the two brake pad driving members 541 to pivot and expand outward. Therefore, the surface of the brake pad 542 is in contact with the inner wall of the brake hub 141 to realize drum braking, and at this time, the slave brake mechanism 50 is in the first locking position.

When continuing to operate the second operating member, the driving member 42 continues to push the driving pin 53 to slide and finally engages in the brake locking hole 1411 to achieve wheel locking, and the driving pin 53 also engages in the brake locking hole 1411 to achieve locking. The first locked position is converted to the second locked position.

Because the brake device of the present invention includes the first brake part 20, the second brake part 30 and the brake mechanism 40, 50; the first brake part 20 is located on the handle bracket 11 of the cart; On the wheel bracket 12 of the car 10; the brake mechanism 40,50 is installed corresponding to the wheel 14 of the cart 10, the first brake member 20 is connected with the brake mechanism 40,50 to drive the brake mechanism 40,50 to be in a first locking position, the second The second brake member 30 is connected with the brake mechanism 40, 50 to drive the brake mechanism 40, 50 to be in the first locking position. In use, if the cart 10 needs to be decelerated, the first brake member 20 or the second brake member 30 is operated to drive the brake mechanism 40, 50 to the first locking position, and the first brake member 20 or the second brake member is released. After part 30, the brake mechanism returns to its original position quickly, and can quickly re-promote the cart 10. It is more convenient for people who are pushing the cart 10 to walk. The first brake part 20 and the second brake part 30 can realize Hand brake and foot brake function, easy to operate. On the other hand, in use, if it is necessary to lock the wheels of the cart 10, continue to operate the first brake or the second brake, so that the brake mechanisms 40, 50 are converted from the first locked position to the second locked position, so as to realize Instant brake function.

Correspondingly, the cart 10 with the braking device of the present invention also has the same technical effect.

Other structures of the cart 10 of the present invention are well known to those skilled in the art, and will not be described in detail here.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Therefore, equivalent changes made according to the patent scope of the present invention still fall within the scope of the present invention.

Claims (23)

1. A braking device, suitable for a cart, the cart includes a wheel bracket and a handle bracket connected to the wheel bracket, characterized in that: comprising a first brake member, located on the handle bracket; a second brake member is arranged on the wheel bracket; and a brake mechanism mounted corresponding to the wheels of the cart, Wherein the first brake member is connected with the brake mechanism to drive the brake mechanism to be in a first locked position, and the second brake member is connected with the brake mechanism to drive the brake mechanism to be in the first locked position. Location; The braking mechanism includes a driving member, a driving pin and a brake assembly, and the driving member, the braking assembly and the wheel are coaxially arranged; the two ends of the driving pin are respectively connected to the driving member, the The above-mentioned brake combination is in conflict, the driving member rotates to drive the driving pin to move, and the driving pin pushes the brake combination to move and be in the first locking position or switch from the first locking position to a second locking position. Lock position. 2. The brake device according to claim 1, wherein the first brake member or the second brake member can drive the brake mechanism to switch from the first locking position to a second locking position. 3. The brake device according to claim 1, wherein the first brake member comprises a first operating member and a first connecting member, and the first connecting member connects the first operating member and the A brake mechanism, operating the first operating member to make the first connecting member drive the brake mechanism to the first locking position, or release the first operating member to return the brake mechanism to its original position. 4. The brake device according to claim 1, wherein the second brake member comprises a second operating member, the second operating member is operated to drive the brake mechanism to the first locking position, Or release the second operating member to return the braking mechanism to its original position. 5. The braking device according to claim 4, wherein the second operating member is connected to the first braking member. 6. The brake device according to claim 1, characterized in that: the first brake member or the second brake member drives the driving pin through the driving member. 7. The brake device according to claim 6, wherein the first brake member is connected to the driving member through the second brake member. 8. The brake device according to claim 6, wherein the first brake member is operated to drive the drive member, and the drive member drives the drive pin to move so that the brake assembly is in the position of the brake assembly. In the first locking position, the second brake member is operated to drive the driving member, and the driving member drives the driving pin to move so that the brake assembly is in the first locking position or is locked by the first locking position. position transition to the second locked position. 9 . The brake device according to claim 6 , wherein the side wall of the driving member is provided with a driving slope, and the driving slope is in conflict with the end of the driving pin. 10 . 10. The braking device according to claim 9, characterized in that: the side wall of the driving member is further provided with a positioning groove on one side of the driving slope, and the braking mechanism is in the second locking position , the driving pin engages in the positioning groove. 11. The brake device according to claim 10, characterized in that: operating the first brake member or the second brake member can make the driving slope push the driving pin to move, so that the brake mechanism In the first locking position, when the driving pin crosses the highest point of the driving slope and engages with the positioning groove, the brake mechanism is in the second locking position. 12. The braking device according to claim 6, wherein the braking mechanism further comprises a brake seat fixed between the driving member and the wheel, and the driving pin is movably arranged on the brake seat Inside. 13. The braking device according to claim 12, wherein the braking mechanism further comprises a first elastic member, and the first elastic member interferes between the driving pin and the brake seat. 14. The brake device according to claim 12, characterized in that: the brake assembly includes a brake pad driver and a brake pad, and the brake pads are alternately fixed to the edge of the brake pad driver and extend to both sides thereof. One end of the brake pad driver is pivotally connected to the side wall of the brake seat adjacent to the wheel, the other end of the brake pad driver is in conflict with the drive pin, and the drive pin moves to pushing the brake pad driver to pivot and expand outward so that the brake assembly is in the first locking position. 15. The brake device according to claim 14, wherein the driving pin is in conflict with the brake pad driving member, and the driving pin pushes the brake pad driving member to expand so that the brake assembly is in the position to the first locked position. 16. The braking device according to claim 15, wherein when the driving pin is pushed by the driving member and continues to slide to engage with the wheel, the braking mechanism is in the second locking position . 17. The brake device according to claim 16, wherein the wheel has a brake hub, and the brake hub is provided with a plurality of brake locking holes, and when the brake pad expands and touches the inner wall of the brake hub, , the brake mechanism is at the first locking position, and when the drive pin engages with the brake locking hole, the brake mechanism is at the second locking position. 18. The brake device according to claim 14, characterized in that: the driving pin is provided with a driving surface in an inclined structure, and the brake pad driving member is protruded with a driven surface matching the driving slope , the driven surface is disposed outside the driving pin and its end portion is in contact with the driving surface. 19. The brake device according to claim 14, characterized in that: the brake pad driver has a waist-shaped structure, one end of the two brake pad driver parts is coaxially pivoted to the side wall of the brake seat, and the two The other ends of the brake pad driving parts are in conflict with the driving pins. 20. The brake device according to claim 14, characterized in that: the brake assembly further comprises a second elastic member connected with the brake pad driver, the second elastic member is used to make the brake pad The drive is reset. 21. The brake device according to claim 14, characterized in that: the brake pad is of elastic structure. 22. A stroller, comprising a wheel bracket, a handle bracket connected to the wheel bracket, and two coaxially connected wheels, characterized in that it further includes the braking device according to any one of claims 1-21. 23. The stroller according to claim 22, wherein each of the wheels is correspondingly equipped with a brake mechanism, and the two brake mechanisms are connected by a link, wherein one of the brake mechanisms is connected to the The first brake part and the second brake part, the first brake part and the second brake part synchronously drive the two brake mechanisms to be in the first locking position through the linkage part or by the The first locked position is converted to the second locked position.