Baby carriage

Abstract

The utility model discloses a buggy which comprises a buggy frame provided with a seat, a front fork capable of rotating relative to the buggy frame is connected to the front side of the buggy frame, a front wheel is connected to the lower end of the front fork, a steering handle is connected to the upper end of the front fork, a rear wheel is connected to the rear side of the buggy frame, detachable auxiliary wheel assemblies are further arranged on the buggy frame and located on the two sides of the rear wheel, and each auxiliary wheel assembly comprises a supporting rod. Auxiliary wheels are arranged at the lower ends of the supporting rods, first connecting positions and second connecting positions for the supporting rods to be inserted are arranged on the frame, when the supporting rods are connected with the first connecting positions, the auxiliary wheels are supported on the ground, and when the supporting rods are connected with the second connecting positions, the auxiliary wheels are separated from the ground. The frame is further provided with a locking structure capable of locking the supporting rod when the supporting rod is connected to the first connecting position or the second connecting position in an inserted mode. The auxiliary wheel assembly is convenient to disassemble and assemble, and the auxiliary wheel assembly can be connected to the frame no matter whether the auxiliary wheel is supported on the ground or not.

Description

[Technical field]

[0001] The utility model relates to a baby carriage. [Background technology]

[0002] Children's bicycles are common products in the process of children's growth. For younger children, due to their poor ability to master balance, general children's bicycles are also equipped with auxiliary wheel assemblies. When the auxiliary wheel assembly is in effect, the children's bicycle is not only in contact with the ground with the front and rear wheels, but also with the auxiliary wheels on both sides of the frame. The children's bicycle is supported at multiple points and will not fall over. Children ride on the seat, which is very safe. However, when children want to exercise their balance, they need to remove the auxiliary wheel assembly. After removal, the children hold the steering handlebars, and the children's bicycle only relies on the front and rear wheels to land. After the children push the ground with their feet and then lift their feet, they can slide for a distance, thereby exercising their balance through sliding. Therefore, when children use children's bicycles, they need to frequently remove or install the auxiliary wheel assembly. Since the auxiliary wheel assembly is generally connected to the frame by screws, it is inconvenient to disassemble and assemble, which is time-consuming and laborious. Moreover, multiple disassembly and assembly are also prone to damage the screws and the screw holes, causing damage to the children's bicycle. In addition, after the auxiliary wheel assembly is removed, it is not convenient to store, and it is easy to lose and forget if stored alone.

[0003] Therefore, the present invention is just produced based on the above shortcomings. [Utility Model Content]

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a baby stroller with a simple structure. The auxiliary wheel assembly of the baby stroller can be easily disassembled and assembled, and the auxiliary wheel assembly can be connected to the frame regardless of whether the auxiliary wheel is supported on the ground or not, and will not be lost.

[0005] The utility model is realized by the following technical solutions:

[0006] A children's bicycle comprises a frame with a seat, a front fork that can rotate relative to the frame is connected to the front side of the frame, the lower end of the front fork is connected to the front wheel, the upper end of the front fork is connected to the steering handle, and the rear side of the frame is connected to the rear wheel. A detachable auxiliary wheel assembly is also provided on the frame and on both sides of the rear wheel. The auxiliary wheel assembly comprises a support rod, the lower end of the support rod is provided with an auxiliary wheel, the frame is provided with a first connecting position and a second connecting position for the support rod to be inserted, when the support rod is connected to the first connecting position, the auxiliary wheel is supported on the ground, and when the support rod is connected to the second connecting position, the auxiliary wheel is separated from the ground, and the frame is also provided with a locking structure that can lock the support rod when the support rod is inserted into the first connecting position or the second connecting position.

[0007] The frame includes a main support beam, a front connecting seat is connected to the front side of the main support beam, the front fork is rotatably arranged in the front connecting seat, the rear end of the main support beam is connected to a U-shaped rear frame, the rear end of the rear frame is provided with a rear connecting seat, the rear wheel is arranged in the rear frame and is rotatably connected to the rear connecting seat, and the auxiliary wheel assembly is connected to the rear connecting seat.

[0008] The first connection position and the second connection position are slots that penetrate each other and extend up and down and are arranged on the rear connecting seat. Card slots are provided on both sides of the support rod. The locking structure includes a sliding column that can move along its axial direction in the rear connecting seat. A card block that can engage with the card slot is provided on one side of the sliding column, and an exposed toggle button is provided on the other side of the sliding column. A first return spring that pushes the sliding column to return to its original position is provided between the sliding column and the rear connecting seat.

[0009] The rear connecting seat comprises a front seat body and a rear seat body connected thereto, the front seat body is provided with a socket for inserting the end of the rear frame, one end of the first return spring abuts against the sliding column, and the other end abuts against the rear seat body.

[0010] The cross section of the support rod is U-shaped, and the projection of the slot on the horizontal plane is U-shaped.

[0011] The rear connecting seat is provided with a boss spaced up and down, and the support rod is provided with a limiting groove which can cooperate with the boss after the support rod is inserted into the first connecting position or the second connecting position.

[0012] The front fork includes a lower fork body connected to the front wheel and an upper connecting seat connected to the upper end of the lower fork body, the steering handle includes a vertical rod inserted in the upper connecting seat and capable of being raised and lowered, a horizontal handle is provided at the upper end of the vertical rod, a locking assembly capable of locking the height of the steering handle is provided between the steering handle and the upper connecting seat, the locking assembly includes a plurality of locking holes vertically provided on the upper connecting seat, a locking pin is provided in the vertical rod and can move horizontally therein to engage or disengage with the locking hole, a button is provided on the horizontal handle, a linkage part is provided between the button and the locking pin and can drive the locking pin to disengage from the locking hole when the button is pressed, a second reset spring capable of pushing the locking pin to return to its original position is also provided in the vertical rod, and a third reset spring capable of pushing the button to return to its original position is provided in the horizontal handle.

[0013] The linkage member includes a rotating rod whose middle part is connected to the vertical rod or the horizontal handle and rotates around the first axis A. One end of the rotating rod contacts the lower end of the button, and a pull rope is arranged between the other end of the rotating rod and the latch.

[0014] The front fork includes a lower fork body connected to the front wheel and an upper connecting seat connected to the upper end of the lower fork body. The steering handle includes a vertical rod inserted in the upper connecting seat. A horizontal handle is provided at the upper end of the vertical rod. The upper connecting seat is provided with a handle that can rotate relative to it. The handle is provided with a protrusion that can pass through the side wall of the upper connecting seat and squeeze the vertical rod when the handle rotates.

[0015] The frame is detachably connected with a pedal that can be stepped on along its left and right directions, and a transmission mechanism is provided between the pedal and the rear wheel, which can drive the rear wheel to rotate when the pedal is stepped on. The frame is also provided with mounting holes for the pedal to be installed along the front and rear directions of the children's vehicle. The frame is also detachably connected with a push rod assembly that can control the travel direction of the children's vehicle.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] 1. The auxiliary wheel assembly of the utility model can be conveniently adjusted on the frame. When a child wants to ride the baby stroller safely, the support rod is inserted into the first connection position and locked. At this time, the auxiliary wheel is supported on the ground, and the baby stroller is supported at multiple points and will not fall over. The child can ride the baby stroller steadily. When the child wants to exercise balance, the support rod is pulled out of the first connection position and inserted into the second connection position. At this time, the auxiliary wheel is off the ground, and only the front and rear wheels of the baby stroller are on the ground. The child can slide on the baby stroller by pushing the ground with both feet, thereby exercising balance. When changing the position of the auxiliary wheel assembly, it is only necessary to unlock the locking structure, and then pull and insert it. The operation is very convenient and quick. Therefore, regardless of whether the auxiliary wheel is supported on the ground, the auxiliary wheel assembly can be connected to the frame and will not be lost.

[0018] 2. The first connection position and the second connection position of the utility model are slots that are interconnected and extend up and down and are arranged on the rear connection seat. Therefore, when the auxiliary wheels need to be supported on the ground, the support rod is inserted upward into the slot. When the auxiliary wheels need to be off the ground, the auxiliary wheel assembly is rotated 180 degrees, and then the support rod is inserted downward into the slot. The operation is very convenient and quick.

[0019] 3. The steering handlebar of the utility model can be raised and lowered relative to the front fork, and children can adjust the steering handlebar to a suitable position according to their own height, which is convenient for comfortable riding.

Brief Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the utility model when the auxiliary wheels are supported on the ground;

[0021] Figure 2 It is a schematic diagram of the utility model when the auxiliary wheels are off the ground;

[0022] Figure 3It is a three-dimensional diagram of the components of the utility model;

[0023] Figure 4 yes Figure 3 Magnified view at B in the middle;

[0024] Figure 5 It is one of the exploded views of the components of the utility model;

[0025] Figure 6 yes Figure 5 Enlarged view at center C;

[0026] Figure 7 This is the second exploded view of the components of the utility model;

[0027] Figure 8 It is a cross-sectional view of the utility model;

[0028] Fig. 9 yes Figure 8 Magnified view at D in the middle;

[0029] Fig.10 This is the third exploded view of the components of the utility model;

[0030] Fig.11 It is one of the partial cross-sectional views of the utility model;

[0031] Fig.12 This is the second partial sectional view of the present utility model. [Specific implementation method]

[0032] The utility model is further described below in conjunction with the accompanying drawings:

[0033] like Figures 1 to 4As shown, a children's vehicle comprises a frame 2 with a seat 1, a front fork 31 which can rotate relative to the frame 2 is connected to the front side of the frame 2, a front wheel 32 is connected to the lower end of the front fork 31, a steering handlebar 33 is connected to the upper end of the front fork 31, a rear wheel 4 is connected to the rear side of the frame 2, and a detachable auxiliary wheel assembly 5 is provided on the frame 2 and on both sides of the rear wheel 4, the auxiliary wheel assembly 5 comprises a support rod 51, an auxiliary wheel 52 is provided at the lower end of the support rod 51, a first connecting position 61 and a second connecting position 62 for inserting the support rod 51 are provided on the frame 2, when the support rod 51 is connected to the first connecting position 61, the auxiliary wheel 52 is supported on the ground, when the support rod 51 is connected to the second connecting position 62, the auxiliary wheel 52 is separated from the ground, and a locking structure 7 which can lock the support rod 51 when the support rod 51 is inserted into the first connecting position 61 or the second connecting position 62 is provided on the frame 2. When a child wants to ride the baby stroller safely, the support rod 51 is inserted into the first connection position 61 and locked. At this time, the auxiliary wheel 52 is supported on the ground, the baby stroller is supported at multiple points and will not fall over, and the child can ride the baby stroller steadily. When a child wants to exercise balance, the support rod 51 is pulled out of the first connection position 61 and inserted into the second connection position 62. At this time, the auxiliary wheel 52 is off the ground, and only the front wheel 32 and the rear wheel 4 of the baby stroller are on the ground. The child can slide on the baby stroller by pushing the ground with both feet, thereby exercising balance. When changing the position of the auxiliary wheel assembly 5, it is only necessary to unlock the locking structure 7, and then pull and insert it. The operation is very convenient and quick. Therefore, regardless of whether the auxiliary wheel 52 is supported on the ground, the auxiliary wheel assembly 5 can be connected to the frame 2 and will not be lost.

[0034] like Figures 2 to 7 As shown, the frame 2 includes a main support beam 21, a front connecting seat 22 is connected to the front side of the main support beam 21, the front fork 31 is rotatably arranged in the front connecting seat 22, a U-shaped rear frame 23 is connected to the rear end of the main support beam 21, a rear connecting seat 24 is provided at the rear end of the rear frame 23, the rear wheel 4 is arranged in the rear frame 23 and is rotatably connected to the rear connecting seat 24, and the auxiliary wheel assembly 5 is connected to the rear connecting seat 24.

[0035] like Figure 1 , Figures 4 to 7As shown, the first connection position 61 and the second connection position 62 are slots that are mutually connected and extend up and down and are arranged on the rear connection seat 24. Therefore, when the auxiliary wheel 52 needs to be supported on the ground, the support rod 51 is inserted upward into the slot, and when the auxiliary wheel 52 needs to be off the ground, the auxiliary wheel assembly is rotated 180 degrees, and then the support rod 52 is inserted downward into the slot, which is very convenient and quick to operate. Both sides of the support rod 51 are provided with a card slot 53, and the locking structure 7 includes a sliding column 71 that can move along its axial direction in the rear connection seat 24, a card block 72 that can be engaged with the card slot 53 is provided on one side of the sliding column 71, and an exposed toggle button 73 is provided on the other side of the sliding column 71, and a first return spring 74 that pushes the sliding column 71 to return to its original position is provided between the sliding column 71 and the rear connection seat 24. When the support rod 51 is connected to the first connection position 61, the block 72 is inserted into the slot 53 on one side of the support rod 51. When the support wheel assembly 5 needs to be disassembled, the toggle button 73 is pushed to disengage the block 72 from the slot 53. At this time, the support rod 51 can be pulled out downward, the auxiliary wheel assembly can be rotated 180 degrees, and then inserted downward into the second connection position 62. At this time, the block 72 can be inserted into the slot 53 on the other side of the support rod 51. When the auxiliary wheel assembly 5 is located at different positions, it can be locked with the same locking structure 7. The structural design is simple and ingenious.

[0036] like Figure 7 As shown, the rear connecting seat 24 includes a front seat body 241 and a rear seat body 242 connected thereto, and the front seat body 241 is provided with a plug hole 243 for inserting the end of the rear frame 23, so that the rear frame 23 is firmly connected to the rear connecting seat 24. One end of the first return spring 74 abuts against the sliding column 71, and the other end abuts against the rear seat body 242.

[0037] like Figure 7 and Fig.12 As shown, the cross section of the support rod 51 is U-shaped, and the projection of the slot on the horizontal plane is U-shaped. The rear connection seat 24 is provided with a boss 244 spaced up and down, and the support rod 51 is provided with a limit groove 54 that can cooperate with the boss 244 after it is inserted into the first connection position 61 or the second connection position 62, so that when the support rod 51 is inserted into the first connection position 61 from bottom to top or inserted into the second connection position 62 from top to bottom, the limit groove 54 abuts against the boss 244, thereby positioning the insertion depth of the support rod 51 and ensuring that the support rod 51 is inserted into the set position and locked.

[0038] like Figures 8 to 11As shown, the front fork 31 includes a lower fork body 311 connected to the front wheel 32 and an upper connecting seat 312 connected to the upper end of the lower fork body 311, the steering handle 33 includes a vertical rod 331 inserted in the upper connecting seat 312 and capable of being raised and lowered, a horizontal handle 332 is provided at the upper end of the vertical rod 331, a locking assembly capable of locking the height of the steering handle 33 is provided between the steering handle 33 and the upper connecting seat 312, and the locking assembly includes a plurality of locking holes 81 vertically provided on the upper connecting seat 312, The vertical rod 331 is provided with a latch 82 which can move horizontally therein and engage or disengage with the locking hole 81, the horizontal handle 332 is provided with a button 83, a linkage 84 is provided between the button 83 and the latch 82, which can drive the latch 82 to disengage from the locking hole 81 when the button 83 is pressed, the vertical rod 331 is also provided with a second return spring 85 which can push the latch 82 to reset, and the horizontal handle 332 is provided with a third return spring 86 which can push the button 83 to reset. Therefore, the steering handle 33 can be raised and lowered relative to the front fork 31, and the child can adjust the steering handle to a suitable position according to his or her own height, so as to facilitate comfortable riding. When making specific adjustments, it is only necessary to press the button 83, and the button 83 will pull the latch 82 out of the locking hole 81 through the linkage 84 during the movement, and the locking assembly will be unlocked at this time, and the steering handle 33 can be adjusted up and down.

[0039] like Fig. 9 As shown, the linkage member 84 includes a rotating rod 841 whose middle part is rotatably connected to the vertical rod 331 or the horizontal handle 332 around the first axis A, one end of the rotating rod 841 contacts the lower end of the button 83, and a pull rope 842 is provided between the other end of the rotating rod 841 and the latch 82. When the button 83 is pressed, the button 83 pushes one end of the rotating rod 841 downward, the rotating rod 841 rotates, the other end of the rotating rod 841 tilts upward and pulls the pull rope 842, and the pull rope 842 pulls the latch 82 out of the latch hole 81, and the rotating handle 33 can be adjusted up and down at this time. When adjusted to a suitable position, the second reset spring 85 pushes the latch 82 to reset, and the latch 82 is locked into another latch hole 81, so that the height of the steering handle 33 is locked.

[0040] like Fig.10 and Fig.11 As shown, the upper connecting seat 312 is provided with a handle 34 that can rotate relative to it, and the handle 34 is provided with a protrusion 35 that can pass through the side wall of the upper connecting seat 312 and squeeze the vertical rod 331 when it rotates. When the protrusion 35 is squeezed on the outer side wall of the vertical rod 331, the steering handle 33 can be prevented from shaking, making it more comfortable for children to ride. When the height of the steering handle 33 needs to be adjusted, the handle 34 is first rotated to release it, and then the locking assembly is unlocked. The upper connecting seat 312 is also provided with an insertion groove 36 for the handle 34 to be inserted, so that the handle 34 can be stored easily.

[0041] like Figures 1 to 3 As shown, the frame 2 is detachably connected with a pedal 9 that can be stepped on along the left and right directions thereof, and a transmission mechanism 10 is provided between the pedal 9 and the rear wheel 4, which can drive the rear wheel 4 to rotate when the pedal 9 is stepped on. The frame 2 is also provided with a mounting hole 11 for the pedal 9 to be installed along the front and rear directions of the baby stroller, and the frame 2 is also detachably connected with a push rod assembly 12 that can control the direction of travel of the baby stroller. Children can drive the baby stroller forward by stepping on the pedal 9, and the transmission mechanism 10 can adopt a traditional chain or toothed belt transmission. When the pedal is not needed, the pedal 9 can be removed and inserted into the mounting hole 11, and the baby stroller can be used as a scooter. Of course, when the child is small, the child can step on the pedal 9 with both feet and support the auxiliary wheel 52 on the ground, and the adult can push the baby stroller after installing the push rod assembly 12.

[0042] The embodiment is described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiment, and various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the present purpose.

Claims

1. A baby carriage, characterized in that: The invention comprises a frame (2) provided with a seat (1), the front side of the frame (2) is connected to a front fork (31) which can rotate relative to the frame (2), the lower end of the front fork (31) is connected to a front wheel (32), the upper end of the front fork (31) is connected to a steering handlebar (33), the rear side of the frame (2) is connected to a rear wheel (4), and a detachable auxiliary wheel assembly (5) is provided on the frame (2) and on both sides of the rear wheel (4), the auxiliary wheel assembly (5) comprises a support rod (51), and the lower end of the support rod (51) is provided with an auxiliary wheel (52) The frame (2) is provided with a first connection position (61) and a second connection position (62) for inserting the support rod (51); when the support rod (51) is connected to the first connection position (61), the auxiliary wheel (52) is supported on the ground; when the support rod (51) is connected to the second connection position (62), the auxiliary wheel (52) is separated from the ground; the frame (2) is also provided with a locking structure (7) capable of locking the support rod (51) when the support rod (51) is inserted into the first connection position (61) or the second connection position (62).

2. The baby stroller according to claim 1, characterized in that: The frame (2) comprises a main support beam (21), the front side of the main support beam (21) is connected to a front connecting seat (22), the front fork (31) is rotatably arranged in the front connecting seat (22), the rear end of the main support beam (21) is connected to a U-shaped rear frame (23), the rear end of the rear frame (23) is provided with a rear connecting seat (24), the rear wheel (4) is arranged in the rear frame (23) and is rotatably connected to the rear connecting seat (24), and the auxiliary wheel assembly (5) is connected to the rear connecting seat (24).

3. The baby stroller according to claim 2, characterized in that: The first connection position (61) and the second connection position (62) are slots that are mutually connected and extend up and down and are arranged on the rear connection seat (24); both sides of the support rod (51) are provided with a card slot (53); the locking structure (7) comprises a sliding column (71) that can move along its axial direction in the rear connection seat (24); one side of the sliding column (71) is provided with a card block (72) that can engage with the card slot (53); the other side of the sliding column (71) is provided with an exposed toggle button (73); and a first return spring (74) is provided between the sliding column (71) and the rear connection seat (24) for pushing the sliding column (71) to return to its original position.

4. The baby carriage according to claim 3, characterized in that: The rear connecting seat (24) comprises a front seat body (241) and a rear seat body (242) connected thereto, the front seat body (241) is provided with a plug hole (243) for inserting the end of the rear frame (23), one end of the first return spring (74) abuts against the sliding column (71), and the other end abuts against the rear seat body (242).

5. The baby carriage according to claim 3, characterized in that: The cross section of the support rod (51) is U-shaped, and the projection of the slot on the horizontal plane is U-shaped.

6. The baby stroller according to claim 3, characterized in that: The rear connecting seat (24) is provided with a boss (244) spaced apart from one another, and the support rod (51) is provided with a limiting groove (54) which can cooperate with the boss (244) after the support rod (51) is inserted into the first connecting position (61) or the second connecting position (62).

7. The baby stroller according to claim 1, characterized in that: The front fork (31) comprises a lower fork body (311) connected to the front wheel (32) and an upper connecting seat (312) connected to the upper end of the lower fork body (311); the steering handle (33) comprises a vertical rod (331) inserted into the upper connecting seat (312) and capable of being raised and lowered; a horizontal handle (332) is arranged at the upper end of the vertical rod (331); a locking assembly capable of locking the height of the steering handle (33) is arranged between the steering handle (33) and the upper connecting seat (312); the locking assembly comprises a plurality of locking holes (81) vertically arranged on the upper connecting seat (312); A latch (82) is provided in the vertical rod (331) and can move transversely therein to engage with or disengage from the latch hole (81); a button (83) is provided on the transverse handle (332); a linkage member (84) is provided between the button (83) and the latch (82) and can drive the latch (82) to disengage from the latch hole (81) when the button (83) is pressed; a second return spring (85) is also provided in the vertical rod (331) and can push the latch (82) to return to its original position; and a third return spring (86) is provided in the transverse handle (332) and can push the button (83) to return to its original position.

8. The baby carriage according to claim 7, characterized in that: The linkage member (84) comprises a rotating rod (841) whose middle part is rotatably connected to the vertical rod (331) or the horizontal handle (332) around the first axis (A); one end of the rotating rod (841) contacts the lower end of the button (83); and a pull rope (842) is provided between the other end of the rotating rod (841) and the latch (82).

9. The baby stroller according to claim 1, characterized in that: The front fork (31) comprises a lower fork body (311) connected to a front wheel (32) and an upper connecting seat (312) connected to the upper end of the lower fork body (311); the steering handle (33) comprises a vertical rod (331) inserted into the upper connecting seat (312); a horizontal handle (332) is arranged at the upper end of the vertical rod (331); a handle (34) rotatable relative to the upper connecting seat (312) is arranged on the upper connecting seat (312); and a protrusion (35) is arranged on the handle (34) which can pass through the side wall of the upper connecting seat (312) and squeeze the vertical rod (331) when the handle (34) rotates.

10. The baby stroller according to claim 3, characterized in that: The frame (2) is detachably connected with a pedal (9) that can be stepped on in the left-right direction thereof; a transmission mechanism (10) is provided between the pedal (9) and the rear wheel (4) and can drive the rear wheel (4) to rotate when the pedal (9) is stepped on; the frame (2) is also provided with a mounting hole (11) for mounting the pedal (9) along the front-rear direction of the child vehicle; and the frame (2) is also detachably connected with a push rod assembly (12) that can control the direction of travel of the child vehicle.

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