CN206456418U - Baby carriage frame - Google Patents

Abstract

The utility model discloses a baby carriage frame, the push rod supporting rod, the linkage supporting rod, the rear foot bar and the three-way joint are connected through a first hinge point, a second hinge point, a third hinge point and a fourth hinge point to form a foldable four-bar linkage mechanism, and the second hinge point is positioned below the linkage joint, so that when the carriage frame is unfolded, the space formed by the push rod, the push rod supporting rod and the linkage supporting rod is larger, thereby effectively avoiding the safety problem of clamping injury, meanwhile, a locking mechanism is arranged on the push rod, so as to lock the seat bar to slide relative to the push rod, so that the four-bar linkage mechanism is kept stable, through acting an unlocking component, the locking state of the linkage joint is firstly released, the handle is turned over forwards, and then the linkage locking mechanism is unlocked, so that the seat bar can slide relative to the push rod, the rear end of the seat bar props up the linkage supporting rod, the stability of the four-bar linkage mechanism is destroyed, and finally, has the characteristics of smooth and rapid folding.

Description

infant car frame

【Technical field】

The utility model relates to a child carriage, in particular to an infant vehicle frame.

【Background technique】

In order to facilitate carrying, transportation and storage, and minimize the folding volume of baby carriages, various baby carriage design manufacturers are continuously improving and perfecting their folding mechanisms. Chinese patent ZL201520698958.2 discloses a stroller for children, the lower end of the push rod is hinged to the upper end of the upper rod, the upper end of the upper support rod frame is connected to the lower part of the push rod through a joint, and the joint is located at the lower end of the push rod and the upper end of the upper rod is hinged point above. Yet adopt this technical scheme, when vehicle frame is unfolded, then there is less gap between the upper end of upper support rod frame and the bottom of push rod, then easily pinches the hand of infant when in use, has potential safety hazard. In addition, when the frame is unfolded, the upper pull rod and the push rod are basically in line, and the dead point between the upper pull rod and the push rod is used to maintain the unfolded state. However, when unlocking and folding, the user needs to use a larger force to act forward The push rod can only be folded, and there is a feature that the folding is not smooth.

The utility model researches and proposes in view of the deficiencies in the prior art.

【Content of utility model】

The technical problem to be solved by the utility model is to provide an infant vehicle frame, the lower end of the handle is rotatably connected to the upper end of the push rod through a linkage joint, the upper end of the push rod is hinged on the middle and upper part of the push rod, and the push rod The lower end is hinged with the linkage strut, and the push rod, the push rod strut, the linkage strut, the rear foot bar and the tee joint are formed by connecting the first hinge point, the second hinge point, the third hinge point and the fourth hinge point Foldable four-bar linkage mechanism, and the second hinge point is located below the linkage joint, so that when the frame is unfolded, the space formed by the push rod, the push rod strut and the linkage strut is relatively large, effectively avoiding the safety of pinching The problem is, at the same time, set the locking mechanism on the push rod to lock the seat post to slide relative to the push rod, so that the four-bar linkage mechanism remains stable. By acting on the unlocking component, the locking state of the linkage joint is first released, the handle is folded forward, and then The linkage locking mechanism is unlocked, so that the seat post can slide relative to the push rod, and the rear end of the seat post supports the linkage strut, which destroys the stability of the four-bar linkage mechanism. Finally, the linkage front leg and push rod are moved towards the rear leg and folded synchronously. The characteristics of smooth and fast folding.

In order to solve the above-mentioned technical problems, the utility model provides an infant vehicle frame, comprising:

The front leg rod is provided with a front wheel assembly at the lower end of the front leg rod, and the upper end of the front leg rod is hinged to the first end of a three-way joint.

The rear leg rod is provided with a rear wheel assembly at the lower end of the rear leg rod, and the upper end of the rear leg rod is connected with the second end of the tee joint.

A push rod, the lower end of which is hinged to the third end of the tee joint to form a first hinge point.

A handle, the two ends of the handle are respectively connected to the upper ends of the two push rods, and a linkage joint is arranged between the handle and the upper ends of the push rods.

The push rod strut, the upper end of the push rod strut is hinged with the push rod to form a second hinge point, and the second hinge point is located below the linkage joint.

As for the linkage strut, the lower end of the push rod strut is hinged with the upper end of the linkage strut to form a third hinge point, and the lower part of the linkage strut is hinged with the rear foot rod to form a fourth hinge point.

The push rod, the push rod rod, the linkage rod, the rear leg rod and the three-way joint are connected through the first hinge point, the second hinge point, the third hinge point and the fourth hinge point to form a foldable four-bar linkage mechanism.

Forefoot pole, the upper end of the front foot pole is hinged with the lower end of the linkage pole, and the hinge point between the upper end of the front foot pole and the lower end of the linkage pole is located in front of the hinge point between the lower part of the linkage pole and the rear foot pole.

A seat post, the rear end of the seat post is hinged to the middle part of the linkage strut, and the front end of the seat post is slidably connected to the push rod.

The locking mechanism is arranged on the push rod and is used for locking the seat post to slide relative to the push rod when the vehicle frame is unfolded.

And an unlocking assembly, the unlocking assembly is arranged on the handle, and is used to control the unlocking state of the linkage joint, and when the handle is folded forward, the linkage joint acts on the locking mechanism and releases the locking state of the seat post.

The linkage joint includes an upper joint block fixedly connected with the handle and a lower joint block fixedly connected with the push rod, and the upper joint block is rotatably connected with the lower joint block.

The inner sides of the upper joint block and the lower joint block are provided with tooth grooves along the circumference, and there is a tooth block between the upper joint block and the lower joint block that can slide into the tooth grooves of the upper joint block and the lower joint block at the same time. An elastic resetting part of the tooth block is provided between the tooth block and the lower joint block to elastically press the tooth block and keep it stuck in the tooth groove of the upper joint block.

A pressing slide block is slidably arranged between the tooth block and the upper joint block, the pressing slide block and the upper joint block are provided with pressing slopes that slide against each other, and the unlocking assembly and the pressing slide block One end is connected to drive the pressing slider to slide along the pressing slope, and meanwhile, the pressing slider pushes the tooth block out of the tooth groove of the upper joint block, thereby releasing the locking state between the upper joint block and the lower joint block.

When the upper joint block rotates relative to the lower joint block, an unlocking linkage assembly is provided between the tooth block and the upper joint block to enable the seatpost to slide relative to the push rod with a linkage locking mechanism.

The unlocking linkage assembly includes an unlocking slider that can slide radially along the tooth block, and an unlocking guide that is arranged on the inner side of the upper joint block and is used to force the unlocking slider to slide along the center of the tooth block when the upper joint block rotates relative to the lower joint block surface, and the unlocking link between the unlocking slider and the locking mechanism.

The upper joint block is provided with an upper joint chute for guiding and sliding of the pressing slider, and the pressing slopes are correspondingly provided on the inner side of the upper joint chute and the side of the pressing slider.

The tooth block is provided with a tooth block chute for the unlocking slider to guide and slide, and the unlocking slider is provided with a guide cylinder that can slide on the unlocking guide surface.

The locking mechanism includes a seat post sliding sleeve fixed on the lower end of the push rod for sliding and guiding the seat post. The seat post sliding sleeve is provided with a locking hole, and the seat post is provided with a locking hole. The lower end of the push rod is also provided with an elastic locking assembly that can be elastically stretched to be inserted into the locking hole and the dynamic locking hole, and the elastic locking assembly is connected with the linkage joint.

The elastic locking assembly includes an inner plug built into the end of the push rod, the inner plug is provided with an unlocking sliding hole, and a locking piece is slidably connected to the unlocking sliding hole, and the locking piece is connected to the linkage joint, and the The unlocking sliding hole is also provided with a locking reset elastic member that keeps the free end of the locking member elastically protruding out of the locking hole.

The unlocking assembly includes an unlocking housing, the housing is slidably connected with an unlocking block, one end of the unlocking block is connected to two sides of a joint unlocking piece, and the lower end of the joint unlocking piece is connected to a linkage joint.

The unlocking briquetting block is provided with a cavity and one end is open, a safety lock block is provided in the cavity of the unlocking briquetting block, and a safety button is slidably connected to the housing, and the safety button is provided with a Corresponding to the safety lock block in the body, it is unlocked by restricting the unlocking pressure block.

An armrest bar is straddled between the lower parts of the two push rods, a pedal is set between the front ends of the two front foot struts, and a tent strut is straddled between the two linkage joints.

Compared with the prior art, the utility model is an infant vehicle frame, which has the following advantages:

1. The lower end of the handle is rotatably connected to the upper end of the push rod through the linkage joint, the upper end of the push rod is hinged to the middle and upper part of the push rod, the lower end of the push rod is hinged to the linkage rod, and the second hinge point is located at the linkage joint and the push rod, the push rod rod, the linkage rod, the rear leg rod and the three-way joint are connected through the first hinge point, the second hinge point, the third hinge point and the fourth hinge point to form a foldable four-way The link mechanism makes the space formed by the push rod, the push rod strut and the linkage strut larger when the frame is unfolded, which effectively avoids the safety problem of being pinched.

2. Set the locking mechanism on the push rod to lock the seat post to slide relative to the push rod. Through the unlocking component, the locking state of the linkage joint is released first, the handle is folded forward, and then the linkage locking mechanism is unlocked, so that the seat post can be relatively The push rod slides, and the rear end of the seat post supports the linkage strut. Finally, the linkage front leg and push rod are moved towards the rear leg and folded synchronously, which has the characteristics of smooth and fast folding.

3. The upper joint block is fixedly connected with the lower end of the handle, and the upper joint block is provided with an unlocking guide surface that deviates from its rotation axis. When the handle is folded forward, the unlocking guide surface of the upper joint block acts as an unlocking slider, so that The unlocking slider slides along the radial direction of the tooth block, and directly pulls the unlocking linkage. The lower end of the unlocking linkage acts on the locking mechanism to unlock. The unlocking linkage is always in a tight state, which ensures a quick and smooth unlocking response and overcomes the need for unlocking linkage. The upper end of the part adopts the winding method; because the winding method is used for unlocking, a long unlocking linkage needs to be prefabricated. When the frame is unfolded, the unlocking linkage is in a loose state. It is easy to have the possibility of unsuccessful unlocking and affect the use.

4. There is a safety lock block in the cavity of the unlocking block, and a safety button is slidably connected to the housing. The safety button is provided to extend into the housing and correspond to the position of the safety lock block to limit unlocking. The safety limit block that is unlocked by the pressing block, when the frame is unlocked and folded, it is necessary to slide the safety button first, so that the safety lock block and the safety limit block are misaligned, and then the unlocking block can be pressed to perform the unlocking and folding action. Safe and reliable features.

【Description of drawings】

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is a three-dimensional structural schematic diagram of an infant vehicle frame of the present invention.

Fig. 2 is a side view of an infant vehicle frame of the present invention.

Fig. 3 is a three-dimensional structural schematic diagram of a linkage joint in an infant vehicle frame of the present invention.

Fig. 4 is an exploded view of the linkage joint in the infant vehicle frame of the present invention.

Fig. 5 is a schematic diagram of the structure of the cooperation between the upper joint block and the unlocking slider in an infant vehicle frame of the present invention.

Fig. 6 is a schematic diagram of the structure of the cooperation between the upper joint block and the pressing slider in an infant vehicle frame of the present invention.

Fig. 7 is an exploded view of the upper joint block and the pressing slider in the infant vehicle frame of the present invention.

Fig. 8 is a schematic structural diagram of the cooperation between the gear block and the unlocking slider in the infant vehicle frame of the present invention.

Fig. 9 is a structural schematic diagram of an unlocking slider in an infant vehicle frame of the present invention.

Fig. 10 is a structural schematic diagram of a locking mechanism in an infant vehicle frame of the present invention.

Fig. 11 is an exploded view of the locking mechanism in the infant vehicle frame of the present invention.

Fig. 12 is a structural schematic diagram of the connection between the handle and the unlocking assembly in an infant vehicle frame of the present invention.

Fig. 13 is an exploded view of an unlocking assembly in an infant vehicle frame of the present invention.

Fig. 14 is a reference diagram of a folded state of an infant vehicle frame of the present invention.

【detailed description】

Below in conjunction with accompanying drawing, the embodiment of the present utility model is described in detail.

As shown in Figures 1 and 2, the utility model is a vehicle frame for infants and young children, including a front foot bar 1, a rear foot bar 2, a push rod 3, a handle 5, a push rod pole 6, a linkage pole 7, and a front foot pole 8 And the seatpost 9, the utility model also includes a linkage joint 4, a locking mechanism 10 and an unlocking assembly 20 arranged on the frame for infants and toddlers, the locking mechanism 10 locks the seatpost 9 and the push rod 3, through Control the connection state of the seat post 9 and the push rod 3, and then control the state of the vehicle frame. The specific implementation method is as follows:

The lower end of the front foot bar 1 is provided with a front wheel assembly 11, and the upper end of the front foot bar 1 is hinged to the first end of a three-way joint 12, and the three-way joint 12 is in a T-shaped structure.

A rear wheel assembly 21 is provided at the lower end of the rear foot bar 2 , and the upper end of the rear foot bar 2 is connected with the second end of the tee joint 12 .

The lower end of the push rod 3 is hinged to the third end of the tee joint 12 to form a first hinge point D, and when the vehicle frame is unfolded, the push rod 3 is in line with the front foot bar 1 .

The two ends of the handle 5 are respectively connected to the upper ends of the two push rods 3, and a linkage joint 4 is provided between the handle 5 and the upper ends of the push rods 3. The handle 5 is in a U-shaped structure. 5 is also provided with a handle reinforcement bar 51.

The upper end of the push rod strut 6 is hinged with the push rod 3 to form a second hinge point A, and the second hinge point A is located below the linkage joint 4 .

The lower end of the push rod strut 6 is hinged with the upper end of the linkage strut 7 to form a third hinge point B, and the lower part of the linkage strut 7 is hinged with the rear foot rod 2 to form a fourth hinge point C. For this reason, the push rod 3. The push rod rod 6, the linkage rod 7, the rear foot rod 2 and the tee joint 12 are connected through the first hinge point D, the second hinge point A, the third hinge point B and the fourth hinge point C to form a foldable Four-bar linkage mechanism; in order to ensure that the vehicle frame is stable when folded or unfolded, the linkage struts 7 move in a predetermined direction to avoid interference, and a linkage fixing rod 71 is fixed between the middle parts of the two linkage struts 7 .

The upper end of the front foot pole 8 is hinged with the lower end of the linkage pole 7, and the hinge point between the upper end of the front foot pole 8 and the lower end of the linkage pole 7 is located in front of the hinge point between the bottom of the linkage pole 7 and the rear foot pole 2. The front foot struts 8 are integrally connected to form a U-shaped structure.

The rear end of the seat post 9 is hinged with the middle part of the linkage strut 7 , and the front end of the seat post 9 is slidably connected with the push rod 3 .

The locking mechanism 10 is arranged on the push rod 3, and is used to lock the seat post 9 to slide relative to the push rod 3 when the vehicle frame is unfolded, that is, to lock the push rod 3, the push rod strut 6, the linkage strut 7, and the rear foot. The rod 2 and the three-way joint 12 are connected to form a four-bar linkage mechanism, thereby locking the vehicle frame.

The unlocking assembly 20 is arranged on the handle 5 and is used to control the linkage joint 4 to release the locked state, and when the handle 5 is folded forward, the linkage joint 4 acts on the locking mechanism 10 and releases the locked state of the seat post 9 .

In the utility model, the lower end of the handle 5 is rotatably connected to the upper end of the push rod 3 through the linkage joint 4, the upper end of the push rod 6 is hinged on the middle and upper part of the push rod 3, and the lower end of the push rod 6 is connected to the linkage rod 7. Hinged, the second hinge point A is located below the linkage joint 4, using the above technical scheme, when the frame is unfolded, the space formed by the push rod 3, the push rod strut 6 and the linkage strut 7 is relatively large, effectively avoiding clamping Injury safety issues.

As shown in Figures 3 and 4, the linkage joint 4 includes an upper joint block 41 fixedly connected to the handle 5 and a lower joint block 42 fixedly connected to the push rod 3, the upper joint block 41 and the lower joint block 42 can be Turn to connect.

As shown in Fig. 4 to Fig. 8, the inner sides of the upper joint block 41 and the lower joint block 42 are provided with tooth grooves 43 along the circumferential direction. The tooth block 44 of the tooth groove 43 of the joint block 41 and the lower joint block 42 is provided with a tooth for elastically pressing the tooth block 44 and keeping it snapped into the upper joint block 41 between the tooth block 44 and the lower joint block 42. The tooth block reset elastic member 48 in the groove 43, the tooth block return elastic member 48 is a spring, that is, when the tooth block 44 is embedded in the tooth groove 43 of the upper joint block 41 and the lower joint block 42 at the same time, the upper joint block 41 and the lower joint block 42 The lower joint block 42 is locked, and the handle 5 cannot be folded forward relative to the push rod 3 .

As shown in Fig. 4, Fig. 6 and Fig. 7, a pressing slider 45 is slidingly arranged between the tooth block 44 and the upper joint block 41, and the pressing slider 45 and the upper joint block 41 are provided with mutual Sliding against the pressing slope 451, the unlocking assembly 20 is connected to one end of the pressing slider 45, the unlocking assembly 20 drives the pressing slider 45 to slide along the pressing inclined surface 451, and the pressing slider 45 is on the top of the pressing inclined surface 451. Under the guiding effect, it protrudes relative to the upper joint block 42, so that the pressing slider 45 pushes the tooth block 44 out of the tooth groove 43 of the upper joint block 41, thereby releasing the locking state between the upper joint block 41 and the lower joint block 42, At this moment, the handle 4 and the upper joint block 41 can be folded forward relative to the lower joint block 42 .

As shown in Fig. 4, Fig. 5 and Fig. 8, when the upper joint block 41 is rotated relative to the lower joint block 42, a locking mechanism 10 is provided between the tooth block 44 and the upper joint block 41 so that the seat post 9 can be pushed relatively. The lever 3 slides to unlock the linkage assembly 46 .

As shown in Fig. 4, Fig. 8 and Fig. 9, the unlocking linkage assembly 46 includes an unlocking slider 461 which can slide radially along the tooth block 44, which is arranged inside the upper joint block 41 and when the upper joint block 41 is opposite to the lower The unlocking guide surface 462 used to force the unlocking slider 461 to slide along the center of the tooth block 44 when the block 42 rotates, and the unlocking linkage 463 arranged between the unlocking slider 461 and the locking mechanism 10, the unlocking linkage 463 is flexible A rope, preferably a steel wire rope.

The upper joint block 41 is provided with an upper joint chute 411 for guiding and sliding of the pressing slider 45, and the pressing inclined surfaces 451 are respectively arranged on the inner side of the upper joint chute 411 and the side of the pressing slider 45, In the utility model, both sides of the upper joint chute 411 and both sides of the top pressure slide block 45 are provided with a top pressure slope 451, and the top pressure slide block 45 protrudes relative to the upper joint block 41 through the guide sliding of the top pressure slope 451, Then press the tooth block 44 .

As shown in Figure 8, the tooth block 44 is provided with a tooth block chute 441 for guiding and sliding the unlocking slider 461, as shown in Figure 9, the unlocking slider 461 is provided with an unlocking guide surface 462 Sliding guide cylinder 464 . When the linkage joint 4 is unlocked, the tooth block 44 breaks away from the tooth groove 43 on the lower joint block 41, so when the upper joint block 41 rotates relative to the lower joint block 42, the unlocking guide surface 462 on the upper joint block 41 pushes the guide cylinder 464, so that the unlocking slider 461 moves toward the center of the tooth block 44 along the tooth block chute 441, the unlocking slider 461 directly unlocks the linkage 463, and the lower end of the unlock linkage 463 pulls the locking piece 107 of the elastic locking assembly 104 to lock The piece 107 disengages from the lock hole 102 .

In this utility model, since the unlocking slider 461 directly pulls the unlocking linkage 463, the unlocking linkage 463 also directly pulls the locking piece 107, so that the unlocking linkage 463 is always in a tight state, which ensures a quick and smooth unlocking response; while in the prior art The upper end of the unlocking link 463 adopts a winding method, and because the unlocking method is used for unlocking, the unlocking link 463 needs to be prefabricated for a long time. When the frame is unfolded, the unlocking link is in a loose state. Therefore, when unlocking, then There is a problem of response lag, and it is also prone to the possibility of unsuccessful unlocking and affecting use.

As shown in Fig. 10 and Fig. 11, the locking mechanism 10 includes a seat post sliding sleeve 101 fixedly arranged at the lower end of the push rod 3 for slidingly guiding the seat post 9, and the seat post sliding sleeve 101 is provided with a lock hole 102, the seat post 9 is provided with a dynamic lock hole 103 that can be aligned with the fixed lock hole 102, and the lower end of the push rod 3 is also provided with an elastic lock that can be elastically stretched to insert into the fixed lock hole 102 and the dynamic lock hole 103 Component 104, the elastic locking component 104 is connected to the lower end of the unlocking linkage 463 of the linkage joint 4.

When the locking mechanism 10 is unlocked, the unlocking component 20 is first applied to release the locked state of the linkage joint 4, and then the handle 5 is pushed to be folded forward. During the process of turning the handle 5 forward, the unlocking linkage component 46 in the linkage joint 4 is driven The elastic locking component 104, the locking piece 107 of the elastic locking component 104 is disengaged from the locking hole 103, at this time, the seat post 9 can slide relative to the seat post sliding sleeve 101 to carry out the folding action, and finally realize the linkage between the front leg bar 1 and the push rod 3 It is folded towards the rear foot bar 2 synchronously, and has the characteristics of smooth and fast folding.

The elastic locking assembly 104 includes an inner plug 105 built into the end of the push rod 3, the inner plug 105 is provided with an unlocking sliding hole 106, and a locking member 107 is slidably connected to the unlocking sliding hole 106, and the locking member 107 is connected to the lower end of the unlocking link 463 of the linkage joint 4, and the unlocking sliding hole 106 is also provided with a locking and reset elastic member 108 that keeps the free end of the locking member 107 elastically extending out of the locking hole 102 .

As shown in FIGS. 12 and 13 , the unlocking assembly 20 includes an unlocking housing 201 , the housing 201 is slidably connected with an unlocking block 202 , and both sides of one end of the unlocking block 202 are respectively connected with joint unlocking pieces 206 . The lower end of the joint unlocking part 206 is connected to the linkage joint 4, and the joint unlocking part 206 is a flexible rope, preferably a steel rope.

In order to further improve the operational safety of the utility model, the unlocking pressing block 202 is provided with a cavity and one end is open, and a safety lock block 203 is arranged in the cavity of the unlocking pressing block 202 , and the housing 201 can also be A safety button 204 is slidingly connected, and the safety button 204 is provided with a safety limit block 205 extending into the housing 201 and corresponding to the position of the safety lock block 203 to limit the unlocking of the unlocking pressure block 202. For this reason, when When the frame is unlocked and folded, the safety button 204 needs to be slid sideways first, so that the safety lock block 203 and the safety limit block 205 are misaligned, and then the unlocking pressing block 202 can be pressed, so that the unlocking pressing block 202 slides relative to the unlocking housing 201, Both sides of one end of the unlocking block 202 pull the joint unlocking part 206 at the same time, and the lower end of the joint unlocking part 206 acts on the linkage joint 4 to unlock and fold, so it is safe and reliable.

As shown in Figures 1 and 2, a handrail bar 31 is straddled between the lower parts of the two push rods 3, a pedal 81 is provided between the front ends of the two front foot struts 8, and a pedal 81 is provided between the two linkage joints 4. A tent strut 47 is arranged across.

As shown in FIG. 14 , when the utility model is folded, the safety button 204 is first slid sideways, so that the safety locking block 203 and the safety limiting block 205 are dislocated.

Then press the unlocking pressing block 202, so that the unlocking pressing block 202 slides relative to the unlocking housing 201, and the two sides of one end of the unlocking pressing block 202 simultaneously pull the joint unlocking part 206.

Then the lower end of the joint unlocking part 206 pulls the pressing slide block 45, and the pressing slide block 45 slides along the pressing inclined surface 451, and protrudes relative to the upper joint block 41 to press the tooth block 44, and the tooth block 44 breaks away from the upper joint block 41 43 on the alveolar.

Immediately push the handle 5 forward with a force, the handle 5 is folded forward relative to the push rod 3, the upper joint block 41 then rotates around its axis of rotation relative to the lower joint block 42, and the unlocking guide surface 462 of the upper joint block 41 pushes the guide cylinder 464, so that the unlocking slider 461 slides along the tooth block chute 441 and towards the center of the tooth block 44, the unlocking slider 461 directly pulls the unlocking linkage 463, and the lower end overcomes the elastic force of the locking reset elastic member 108, so that the locking member 107 is free At this time, the locking mechanism 10 realizes unlocking, the seat post 9 slides relative to the push rod 3, and the rear end of the push rod 3 pushes the linkage strut 7, and the lower end of the linkage strut 7 pulls the front leg 1 toward The rear foot bar 2 is folded closer, and the upper end of the linkage pole 7 pushes the lower end of the push rod pole 6 simultaneously, so that the upper end of the push rod 3 is also folded closer to the rear foot bar 2 to realize synchronous folding.

Claims (10)

1. a kind of infant's vehicle frame, it is characterised in that including：

Preceding foot lever (1), preceding foot lever (1) lower end is provided with front component (11), preceding foot lever (1) upper end and a three-way connection (12) first end is hinged；

Foot lever (2) afterwards, rear foot lever (2) lower end is provided with wheel assembly (21), rear foot lever (2) upper end and three-way connection (12) the second end connection；

Push rod (3), push rod (3) lower end and the 3rd end of three-way connection (12) are hinged, and form the first pin joint (D)；

Handle (5), handle (5) two ends are connected with two push rods (3) upper end respectively, the handle (5) and push rod (3) upper end it Between be provided with cooperating joint (4)；

Push rod pole (6), push rod pole (6) upper end is hinged with push rod (3), forms the second pin joint (A), and described second Pin joint (A) is located at below cooperating joint (4)；

Linkage pole (7), push rod pole (6) lower end is hinged with linkage pole (7) upper end, forms the 3rd pin joint (B), institute State linkage pole (7) bottom to be hinged with rear foot lever (2), form the 4th pin joint (C)；

The push rod (3), push rod pole (6), linkage pole (7), rear foot lever (2) and three-way connection (12) pass through the first pin joint (D), the second pin joint (A), the 3rd pin joint (B) and the connection of the 4th pin joint (C) form folding quadric chain；

Front foot pole (8), front foot pole (8) upper end is hinged with linkage pole (7) lower end, and on the front foot pole (8) The pin joint at end and linkage pole (7) lower end is located at linkage pole (7) bottom and the front of the pin joint of rear foot lever (2)；

Seat bar (9), seat bar (9) rear end in the middle part of linkage pole (7) with being hinged, and seat bar (9) front end and the push rod (3) it is slidably connected；

Locking mechanism (10), the locking mechanism (10) is located on push rod (3), and locking seat bar (9) phase is used for when vehicle frame deploys Push rod (3) is slided；And

Lock set (20) is solved, the solution lock set (20) is located on handle (5), for controlling cooperating joint (4) to unlock shape State, and when handle (5) is turned down forward, cooperating joint (4) acting locking mechanism (10), and release the locking shape to seat bar (9) State.

2. a kind of infant's vehicle frame according to claim 1, it is characterised in that the cooperating joint (4) includes and handle (5) The upper joint block (41) being fixedly connected and ShiShimonoseki locking nub (42) being fixedly connected with push rod (3), the upper joint block (41) is with Joint block (42) is rotatably connected；

The upper joint block (41) is with ShiShimonoseki locking nub (42) inner side circumferentially arranged with teeth groove (43), and the upper joint block (41) is with The tooth block of upper joint block (41) and the teeth groove (43) of ShiShimonoseki locking nub (42) can be slidably caught in simultaneously by being provided between joint block (42) (44) tooth block reset elastic component (48), is provided between the tooth block (44) and ShiShimonoseki locking nub (42), for elastic top knob block (44) and it is allowed to holding and is caught in the teeth groove (43) of upper joint block (41)；

Slided between the tooth block (44) and upper joint block (41) and be provided with top pressure sliding block (45), the top pressure sliding block (45) and upper The top pressure inclined-plane (451) mutually slid against, the solution lock set (20) and top pressure sliding block (45) are equipped with joint block (41) One end connection is to drive top pressure sliding block (45) to be slided along top pressure inclined-plane (451), while top pressure sliding block (45) ejects tooth block (44) The teeth groove (43) of upper joint block (41), and then release the lock-out state between upper joint block (41) and ShiShimonoseki locking nub (42)；

Between the tooth block (44) and upper joint block (41) be provided with when upper joint block (41) is rotated relative to ShiShimonoseki locking nub (42) with Ganged locking mechanism (10) causes the unblock linkage unit (46) that seat bar (9) can be slided with respect to push rod (3).

3. a kind of infant's vehicle frame according to claim 2, it is characterised in that the unblock linkage unit (46) includes can edge The solution lock slide (461) that tooth block (44) is radially slided, be located at it is on the inside of upper joint block (41) and when upper joint block (41) relatively under It is used for the unblock spigot surface (462) for forcing solution lock slide (461) along tooth block (44) central slide when joint block (42) is rotated, and It is located at the unblock STATEMENT OF FEDERALLY SPONSORED (463) between solution lock slide (461) and locking mechanism (10).

4. a kind of infant's vehicle frame according to Claims 2 or 3, it is characterised in that the upper joint block (41), which is provided with, to be used for The upper joint chute (411) slided is oriented to for top pressure sliding block (45), the top pressure inclined-plane (451) is respectively located at upper joint On the inside of chute (411) and top pressure sliding block (45) side.

5. a kind of infant's vehicle frame according to claim 3, it is characterised in that the tooth block (44), which is provided with, to be used for for unblock Sliding block (461) is oriented to the tooth block chute (441) slided, and the solution lock slide (461) is provided with can be sliding in unblock spigot surface (462) Dynamic guide cylinder (464).

6. a kind of infant's vehicle frame according to claim 1 or 2 or 3, it is characterised in that the locking mechanism (10) includes solid Surely it is located on the seat bar sliding sleeve (101) for abutment bar (9) slide-and-guide of push rod (3) lower end, the seat bar sliding sleeve (101) and sets There is lock hole (102), the seat bar (9) is provided with the dynamic lockhole (103) that can be alignd with lock hole (102), the push rod (3) End be additionally provided with can elastic telescopic to insert the elastic locking component (104) in lock hole (102) and dynamic lockhole (103), the elasticity Locked component (104) is connected with cooperating joint (4).

7. a kind of infant's vehicle frame according to claim 6, it is characterised in that the elastic locking component (104) includes interior The interior plug (105) of push rod (3) end is placed in, the interior plug (105) is provided with unblock slide opening (106), the unblock slide opening (106) Locking piece (107) is inside slidably connected, the locking piece (107) is connected with cooperating joint (4), and the unblock slide opening (106) Inside it is additionally provided with the locking return springs (108) for make it that locking piece (107) free end keeps elasticity to stretch out lock hole (102).

8. a kind of infant's vehicle frame according to claim 1 or 2 or 3, it is characterised in that the solution lock set (20) includes solution Lock housing body (201), the housing (201) slidably connects unblock briquetting (202), described unblock briquetting (202) one end both sides point Joint unlock piece (206) is not connected with, and joint unlock piece (206) lower end is connected with cooperating joint (4).

9. a kind of infant's vehicle frame according to claim 8, it is characterised in that the unblock briquetting (202) is provided with cavity and one Also slidable connection is provided with safe closing piece (203), the housing (201) in end opening, the cavity of the unblock briquetting (202) There is safety switch (204), the safety switch (204) is in housing (201) and relative with safe closing piece (203) position provided with stretching into The safe spacing block (205) to limit unblock briquetting (202) start unblock answered.

10. a kind of infant's vehicle frame according to claim 1, it is characterised in that had between push rod described in two (3) bottom Pedal (81) is provided between bar (31), front foot pole (8) front end described in two, the span of cooperating joint described in two (4) is set There is fluffy gear pole (47).