Brake pedal mechanism of stroller

Abstract

The invention discloses a child stroller brake pedal mechanism which comprises a supporting rod, a fixing base is fixed to the supporting rod, a pedal base which can be treaded to longitudinally slide relative to the fixing base is connected to the fixing base, and a brake driving rod which can be driven by the pedal base to transversely move when the pedal base moves downwards is arranged in the supporting rod. A positioning structure capable of positioning the pedal seat is arranged between the pedal seat and the fixed seat, the positioning structure comprises a first clamping position arranged on the fixed seat and a second clamping position located below the first clamping position, and a clamping piece capable of alternately staying between the first clamping position and the second clamping position when the pedal seat is treaded is arranged on the pedal seat; a first reset spring capable of pushing the pedal seat to move upwards to reset when the pedal seat is loosened is arranged between the pedal seat and the fixing seat, and a second reset spring capable of pushing the brake driving rod to reset transversely when the pedal seat is reset upwards is arranged between the brake driving rod and the supporting rod. The shoe rack is simple in structure and convenient to operate and cannot damage shoes.

Description

Technical Field

[0001] The present invention relates to the field of baby strollers, and more particularly to a brake pedal mechanism for a baby stroller.

Background Art

[0002] Baby strollers are common products in the growth process of infants and young children, and are used to carry children when going out. Current baby strollers all have a braking mechanism to ensure that the baby stroller can be steadily stopped on the ground when needed.

[0003] Currently, the pedal mechanism for operating the brake or releasing the brake on a baby stroller generally uses a rotating pedal. When braking, an adult steps on the pedal backward to make the pedal rotate to complete the braking. When it is necessary to release the brake, the toe is used to hook up the brake pedal upward to make the brake pedal rotate in the reverse direction to complete the release of the brake. However, such a brake pedal mechanism has the following deficiencies: First, it is rather troublesome for an adult to hook up the brake pedal with the toe. It is necessary to stretch the toe under the lower side of the brake pedal, and it is not convenient to find the correct position. In addition, it is relatively easy to scratch the surface of the shoes when hooking the brake pedal with the toe, especially the shiny surface of leather shoes and the like.

[0004] Therefore, the present invention is precisely produced based on the above deficiencies.

Summary of the Invention

[0005] The object of the present invention is to overcome the deficiencies of the prior art and provide a brake pedal mechanism for a baby stroller with a simple structure, convenient operation, and no damage to shoes.

[0006] The present invention is realized through the following technical solutions:

[0007] A brake pedal mechanism for a baby stroller includes a support rod fixedly connected to the frame of the baby stroller. A fixed seat is fixedly provided on the support rod. A footrest is connected to the fixed seat and can be stepped on to longitudinally slide relative to the fixed seat. A brake driving rod is arranged inside the support rod and can be driven by the footrest to move horizontally when the footrest moves downward. A positioning structure for positioning the footrest is provided between the footrest and the fixed seat. The positioning structure includes a first clamping position provided on the fixed seat and a second clamping position located below the first clamping position. A clamping member is provided on the footrest and can alternately stay between the first clamping position and the second clamping position when the footrest is stepped on. A first return spring for pushing the footrest to move upward and reset when the footrest is released is provided between the footrest and the fixed seat. A second return spring for pushing the brake driving rod to move horizontally and reset when the footrest is reset upward is provided between the brake driving rod and the support rod.

[0008] The fixed seat is provided with an annular groove, and the first clamping position and the second clamping position are arranged on the side wall of the annular groove. In the initial state, the engaging member is clamped with the first clamping position. When the pedal seat is stepped on and moved downward and then released, the engaging member moves along the annular groove and is moved to the second clamping position by the first return spring to be clamped. When the pedal seat is stepped on and moved downward again and then released, the engaging member continues to move along the annular groove and returns to the first clamping position under the action of the first return spring.

[0009] The engaging member includes a swing rod movably connected to the pedal seat and capable of swinging relative to the pedal seat. A convex shaft is provided at the lower end of the swing rod and is inserted into the annular groove and can be clamped with the first clamping position or the second clamping position.

[0010] The pedal seat is provided with a connecting shaft, and the upper end of the swing rod is rotatably connected to the connecting shaft.

[0011] A strip-shaped hole is provided along the length direction at the upper end of the swing rod, and the strip-shaped hole is sleeved on the connecting shaft and is movably connected to the connecting shaft.

[0012] The annular groove includes a first chute section, a second chute section, a third chute section, a fourth chute section and a fifth chute section connected in sequence. The first clamping position is arranged at the top end of the first chute section. At the connection position between the first chute section and the second chute section, there is a first guiding portion that can prevent the convex shaft from entering the fifth chute section when the convex shaft moves downward and guide the convex shaft into the second chute section. At the connection position between the second chute section and the third chute section, there is a resisting portion that can resist the convex shaft and a second guiding portion that can guide the convex shaft into the upper end of the third chute section when the first return spring pushes the pedal seat upward. The second clamping position is arranged at the upper end of the third chute section. At the connection position between the third chute section and the fourth chute section, there is a guiding side wall that can guide the convex shaft into the fourth chute section and a blocking portion that can prevent the convex shaft from returning to the third chute section under the action of the first return spring. The fourth chute section, the fifth chute section and the first chute section are interconnected so that the convex shaft entering the fourth chute section returns to the first clamping position at the top end of the first chute section under the action of the first return spring.

[0013] The fixed seat includes a front seat body and a rear seat body. Annular grooves are provided on both the front seat body and the rear seat body. The pedal seat is inserted between the front seat body and the rear seat body and can move up and down. The convex shaft protrudes from both the front and rear sides of the swing rod and is inserted into the corresponding annular groove.

[0014] Vertically extending guiding grooves are provided on both the front seat body and the rear seat body, and guiding blocks slidably matched with the guiding grooves are provided on the pedal seat.

[0015] The described footrest is provided with a first inclined surface, and the brake drive rod is provided with a second inclined surface that abuts against the first inclined surface and can be pushed by the first inclined surface when the footrest moves downward. When the first inclined surface pushes the second inclined surface downward, the brake drive rod moves horizontally to drive the brake mechanism of the baby stroller to brake or release the brake.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. The fixed seat of the present invention is provided with a first clamping position and a second clamping position below the first clamping position. The engaging member on the footrest can alternately stay between the first clamping position and the second clamping position when the footrest is stepped on. That is, when the engaging member stays in the first clamping position, the footrest is positioned. When the footrest is stepped on, the engaging member engages with the second clamping position, and the footrest descends a certain height and is positioned. During the descent of the footrest, it drives the brake drive rod to move horizontally to complete braking or releasing the brake. When the footrest is stepped on again, the engaging member returns to the first clamping position, and the footrest returns to its original position. Therefore, for the baby stroller, the braking or releasing of the brake can be achieved simply by stepping on the footrest. An adult's sole stepping on the footrest can easily find the position and will not damage the shoes. Moreover, by intermittently stepping on the footrest, the up-and-down reciprocating movement of the footrest can be realized to achieve braking or releasing the brake, and the operation is very convenient and fast.

[0018] 2. When the footrest of the present invention is in the initial position, the convex shaft on the swing rod is caught in the first clamping position. When the footrest is stepped on, the convex shaft disengages from the first clamping position and moves along the annular groove. When it moves to a certain position, the convex shaft abuts against the side wall of the annular groove, and the side wall of the annular groove guides the convex shaft to continue moving. The upper end of the swing rod rotates relative to the fixed seat. After reaching the set position, the footrest is released, and the first return spring then pushes the footrest upward to reset. The convex shaft continues to move forward in the annular groove and stays at the second clamping position. At this time, the footrest is positioned. Since the position of the second clamping position is lower than that of the first clamping position, the position of the footrest at this time enables the position of the brake drive rod after horizontal movement to be maintained, that is, the baby stroller is in a braked or brake-released state. When the footrest is stepped on again, the convex shaft disengages from the second clamping position and continues to move along the annular groove. When it moves to the set position, the footrest is released, and the first return spring again pushes the footrest upward to reset. The convex shaft continues to move in the annular groove and returns to the first clamping position. At this time, the footrest releases the brake drive rod, making the brake mechanism of the baby stroller in a brake-released or braked state. Therefore, by intermittently stepping on the foot pedal, the footrest can be positioned through the swing rod and the convex shaft thereon, and then the brake drive rod can be positioned to maintain the braked or brake-released state of the brake mechanism of the baby stroller. The movement of the convex shaft in the annular groove realizes the positioning of the footrest, and the design is very ingenious.

[0019] 3. The structure of the present invention is simple and the operation is convenient, which is suitable for popularization and application.

BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the present invention assembled on a stroller frame;

[0021] Figure 2 is a schematic exploded view of the present invention and the wheels of the stroller;

[0022] Figure 3 is a cross-sectional view of the present invention;

[0023] Figure 4 is an exploded view of the present invention;

[0024] Figure 5 is a side view of the rear seat body of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] As shown in Figures 1 to 5 , a brake pedal mechanism for a stroller includes a support rod 1 fixedly connected to a stroller frame 100. A fixed seat 2 is fixedly provided on the support rod 1. A footrest seat 3 that can be stepped on and longitudinally slide relative to the fixed seat 2 is connected to the fixed seat 2. A brake drive rod 4 that can be driven by the footrest seat 3 to move horizontally when the footrest seat 3 moves downward is provided inside the support rod 1. When the footrest seat 3 moves downward, the footrest seat 3 pushes the brake drive rod 4 to move horizontally. During the horizontal movement of the brake drive rod 4, it drives the brake mechanism 200 of the stroller to brake or unlock. The brake mechanism of the stroller can adopt a traditional brake mechanism, which will not be elaborated here. In this embodiment, in order to convert the longitudinal sliding of the footrest seat 3 into the horizontal movement of the brake drive rod 4, a first inclined surface 33 is provided on the footrest seat 3, and a second inclined surface 41 that abuts against the first inclined surface 41 and can be pushed by the first inclined surface 33 when the footrest seat 3 moves downward is provided on the brake drive rod 4. When the first inclined surface 33 pushes the second inclined surface 41 downward, the brake drive rod 4 moves horizontally to drive the brake mechanism 200 of the stroller to brake or release the brake. In this embodiment, there are two brake drive rods 4 and they are arranged on both sides of the footrest seat 3. When the footrest seat 3 moves downward, it simultaneously drives the two brake drive rods 4 to move horizontally to achieve synchronous braking or release of the brakes of the two wheels. A second return spring 7 that can push the brake drive rod 4 to horizontally reset when the footrest seat 3 returns upward is provided between the brake drive rod 4 and the support rod 1.

[0027] As shown in Figures 3 to 5As shown, a positioning structure capable of positioning the pedal seat 3 is provided between the pedal seat 3 and the fixed seat 2. The positioning structure includes a first clamping position 51 provided on the fixed seat 2 and a second clamping position 52 located below the first clamping position 51. A clamping member 53 is provided on the pedal seat 3 and can alternately stay between the first clamping position 51 and the second clamping position 52 when the pedal seat 3 is stepped on. A first return spring 6 is provided between the pedal seat 3 and the fixed seat 2 and can push the pedal seat 3 upward to move back to its original position when the pedal seat 3 is released. Through the alternating engagement of the clamping member 53 with the first clamping position 51 and the second clamping position 52, the pedal seat 3 can stay at different positions to achieve braking or releasing the brake through the brake drive rod 4. Specifically, when the pedal seat 3 is stepped on and moved downward to a set position and then released, the pedal seat 3 moves downward and the clamping member 53 moves from the first clamping position 51 to the second clamping position 52 under the action of the first return spring 6, so that the pedal seat 3 moves from a high position to a low position and stays at the low position. During the movement of the pedal seat 3, the brake drive rod 4 is driven to move horizontally to achieve braking or releasing the brake. When the pedal seat 3 is stepped on again, the pedal seat 3 continues to move downward and when the pedal seat 3 is released, the pedal seat 3 returns to the high position under the action of the first return spring 6. At this time, the clamping member 53 returns to the first clamping position 51 to achieve releasing the brake or braking. Therefore, by intermittently stepping on the pedal seat 3, the clamping member 53 alternately stays between the first clamping position 51 and the second clamping position 52, realizing the reciprocating movement of the pedal seat 3 and achieving braking or releasing the brake during the reciprocating movement. The entire operation of braking or releasing the brake only requires stepping on the pedal seat 3 with the sole of the shoe, which is convenient and fast and will not damage the shoes.

[0028] As Figures 3 to 5 shown, a circular groove 54 is provided on the fixed seat 2. The first clamping position 51 and the second clamping position 52 are provided on the side wall of the circular groove 54. In the initial state, the clamping member 53 is engaged with the first clamping position 51. When the pedal seat 3 is stepped on and moved downward and then released, the clamping member 53 moves along the circular groove 54 and moves to the second clamping position 52 to engage under the action of the first return spring 6. When the pedal seat 3 is stepped on again and moved downward and then released, the clamping member 53 continues to move along the circular groove 54 and returns to the first clamping position 51 under the action of the first return spring 6.

[0029] As Figures 3 to 5As shown, the engaging member 53 includes a swing rod 531 that is movably connected to the footrest 3 and can swing relative to the footrest 3. A convex shaft 532 is provided at the lower end of the swing rod 531 and can be inserted into the annular groove 54 and engaged with the first clamping position 51 or the second clamping position 52. In order for the footrest 3 to stay at different heights, therefore, the first clamping position 51 and the second clamping position 52 cannot be in the same vertical direction, and they are displaced backward in the left-right horizontal direction. At this time, in order for the engaging member 53 to be engaged with the first clamping position 51 or the second clamping position 52, the engaging member 53 includes a swing rod 531 that is movably connected to the footrest 3. When the convex shaft 532 moves along the annular groove 54, the swing rod 531 swings relative to the footrest 3, so as to ensure that the convex shaft 532 can alternately stay in the first clamping position 51 and the second clamping position 52, and ensure that the footrest 3 can alternately descend and ascend when the footrest 3 is stepped on downward.

[0030] As Figures 3 to 5 shown, a connecting shaft 31 is provided on the footrest 3, and the upper end of the swing rod 531 is rotatably connected to the connecting shaft 31. In this embodiment, a strip-shaped hole 533 is provided along the length direction of the upper end of the swing rod 531, and the strip-shaped hole 533 is sleeved on the connecting shaft 31 and movably connected to the connecting shaft 31, which can avoid the jamming phenomenon that may occur when the footrest 3 is stepped on.

[0031] As Figure 5As shown, the annular groove 54 includes a first chute section 541, a second chute section 542, a third chute section 543, a fourth chute section 544, and a fifth chute section 545 that are sequentially connected. The first clamping position 51 is provided at the top of the first chute section 541. At the connection position between the first chute section 541 and the second chute section 542, there is a first guiding portion 55 that can prevent the convex shaft 532 from entering the fifth chute section 545 and guide the convex shaft 532 into the second chute section 542 when the convex shaft 532 moves downward. At the connection position between the second chute section 542 and the third chute section 543, there is a resisting portion 56 that can resist the convex shaft 532 and a second guiding portion 57 that can guide the convex shaft 532 into the upper end of the third chute section 543 when the first return spring 6 pushes the footrest 3 upward. The second clamping position 52 is provided at the upper end of the third chute section 543. At the connection position between the third chute section 543 and the fourth chute section 544, there is a guiding side wall 58 that can guide the convex shaft 532 into the fourth chute section 544 and a blocking portion 59 that can prevent the convex shaft 532 from returning to the third chute section 543 under the action of the first return spring 6. The fourth chute section 544, the fifth chute section 545, and the first chute section 541 are interconnected so that the convex shaft 532 entering the fourth chute section 544 returns to the first clamping position 51 at the top of the first chute section 541 under the action of the first return spring 6. When the footrest 3 is stepped on, the swing rod 531 and the footrest 3 move downward simultaneously. The convex shaft 532 moves downward along the side wall of the first chute section 541 and is resisted by the first guiding portion 55 at the connection position between the first chute section 541 and the second chute section 542. At this time, by maintaining the pressing force on the footrest 3, the first guiding portion 55 can guide the convex shaft 532 into the second chute section 542. When the convex shaft 532 moves along the second chute section 542 to a set position, it is resisted by the resisting portion 56. At this time, the pressure on the footrest 3 is released, and the first return spring 6 pushes the footrest 3 upward to reset. The second guiding portion 57 touches the convex shaft 532 and guides the convex shaft 532 into the upper end of the third chute section 543. At this time, it reaches the second clamping position 52, and the footrest 3 is held in the low position. At this time, the braking state or the brake release state of the stroller is also maintained. When it is necessary to release the brake or apply the brake, the footrest 3 is stepped on again. The convex shaft 532 moves downward from the upper end of the third chute section 543 and touches the guiding side wall 58 during the downward movement and is guided into the fourth chute section 544. At this time, the pressure on the footrest 3 is released, and the first return spring 6 pushes the footrest 3 upward to reset again. The convex shaft 532 touches the blocking portion 59 and cannot return to the third chute section 543. At this time, the convex shaft 532 moves along the fourth chute section 544 and the fifth chute section 545 and returns to the first clamping position 51 at the upper end of the first chute section 541, realizing the release of the brake or the application of the brake of the stroller. By stepping on the footrest 3 twice, the convex shaft 532 moves one full circle in the annular groove 54, realizing one switching between the braking and the brake release of the stroller.

[0032] AsFigure 4 As shown, the fixed seat 2 includes a front seat body 21 and a rear seat body 22. Annular grooves 54 are provided on both the front seat body 21 and the rear seat body 22. The footrest seat 3 is inserted between the front seat body 21 and the rear seat body 22 and can move up and down. The convex shaft 532 protrudes from the front and rear sides of the swing rod 531 and is inserted into the corresponding annular groove 54. Therefore, both ends of the convex shaft 532 are inserted into the corresponding annular groove 54, making the up and down movement of the footrest seat 3 stable and not prone to jamming.

[0033] As Figure 4 shown, vertical guide grooves 23 are provided on both the front seat body 21 and the rear seat body 22. Guide blocks 32 that are slidably engaged with the guide grooves 23 are provided on the footrest seat 3, further making the up and down movement of the footrest seat 3 very smooth.

[0034] The above has described this embodiment in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiment. Within the scope of knowledge possessed by those of ordinary skill in the art in the said technical field, various changes can also be made without departing from the gist of the present invention.

Claims

1. A brake pedal mechanism for a baby stroller, characterized in that: It includes a support rod (1) fixedly connected to a stroller frame (100). A fixed seat (2) is fixedly provided on the support rod (1). A footrest seat (3) that can be stepped on and longitudinally slide relative to the fixed seat (2) is connected to the fixed seat (2). A brake drive rod (4) that can be driven by the footrest seat (3) to move horizontally when the footrest seat (3) moves downward is provided inside the support rod (1). A positioning structure capable of positioning the footrest seat (3) is provided between the footrest seat (3) and the fixed seat (2). The positioning structure includes a first clamping position (51) provided on the fixed seat (2) and a second clamping position (52) located below the first clamping position (51). A clamping member (53) that can alternately stay between the first clamping position (51) and the second clamping position (52) when the footrest seat (3) is stepped on is provided on the footrest seat (3). A first return spring (6) that can push the footrest seat (3) to move upward and reset when the footrest seat (3) is released is provided between the footrest seat (3) and the fixed seat (2). A second return spring (7) that can push the brake drive rod (4) to move horizontally and reset when the footrest seat (3) resets upward is provided between the brake drive rod (4) and the support rod (1).

2. The brake pedal mechanism for a baby stroller according to claim 1, wherein: An annular groove (54) is provided on the fixed seat (2). The first clamping position (51) and the second clamping position (52) are provided on the side wall of the annular groove (54). In the initial state, the clamping member (53) is clamped with the first clamping position (51). When the footrest seat (3) is stepped on and moves downward and then released, the clamping member (53) moves along the annular groove (54) and moves to be clamped with the second clamping position (52) under the action of the first return spring (6). When the footrest seat (3) is stepped on again and moves downward and then released, the clamping member (53) continues to move along the annular groove (54) and returns to the first clamping position (51) under the action of the first return spring (6).

3. The brake pedal mechanism for a baby stroller according to claim 2, characterized in that: The clamping member (53) includes a swing rod (531) movably connected to the footrest seat (3) and capable of swinging relative to the footrest seat (3). A convex shaft (532) that is inserted into the annular groove (54) and can be clamped with the first clamping position (51) or the second clamping position (52) is provided at the lower end of the swing rod (531).

4. The child stroller brake pedal mechanism according to claim 3, wherein: A connecting shaft (31) is provided on the footrest seat (3). The upper end of the swing rod (531) is rotatably connected to the connecting shaft (31).

5. The brake pedal mechanism for a baby stroller according to claim 4, characterized in that: A strip-shaped hole (533) is provided along the length direction at the upper end of the swing rod (531). The strip-shaped hole (533) is sleeved on the connecting shaft (31) and is movably connected to the connecting shaft (31).

6. The stroller brake pedal mechanism according to any one of claims 3 to 5, characterized in that: The described annular groove (54) includes a first chute section (541), a second chute section (542), a third chute section (543), a fourth chute section (544), and a fifth chute section (545) that are connected in sequence. The first clamping position (51) is provided at the top of the first chute section (541). At the connection position between the first chute section (541) and the second chute section (542), there is a first guiding portion (55) that can prevent the convex shaft (532) from entering the fifth chute section (545) and guide the convex shaft (532) into the second chute section (542) when the convex shaft (532) moves downward. At the connection position between the second chute section (542) and the third chute section (543), there is a resisting portion (56) that can resist the convex shaft (532) and a second guiding portion (57) that can guide the convex shaft (532) into the upper end of the third chute section (543) when the first return spring (6) pushes the footrest (3) upward. The second clamping position (52) is provided at the upper end of the third chute section (543). At the connection position between the third chute section (543) and the fourth chute section (544), there is a guiding side wall (58) that can guide the convex shaft (532) into the fourth chute section (544) and a blocking portion (59) that can prevent the convex shaft (532) from returning to the third chute section (543) under the action of the first return spring (6). The fourth chute section (544), the fifth chute section (545), and the first chute section (541) are interconnected, so that the convex shaft (532) entering the fourth chute section (544) returns to the first clamping position (51) at the top of the first chute section (541) under the action of the first return spring (6).

7. The brake pedal mechanism for a baby stroller according to claim 6, characterized in that: The described fixed seat (2) includes a front seat body (21) and a rear seat body (22). Annular grooves (54) are provided on both the front seat body (21) and the rear seat body (22). The footrest (3) is inserted between the front seat body (21) and the rear seat body (22) and can move up and down. The convex shaft (532) protrudes from both the front and rear sides of the swing rod (531) and is inserted into the corresponding annular groove (54).

8. The braking pedal mechanism for a baby stroller according to claim 7, wherein: Vertical guiding grooves (23) are provided on both the front seat body (21) and the rear seat body (22). Guiding blocks (32) that are slidably engaged with the guiding grooves (23) are provided on the footrest (3).

9. The brake pedal mechanism for a baby stroller according to any one of claims 1 to 5, characterized in that: A first inclined surface (33) is provided on the footrest (3). A second inclined surface (41) that abuts against the first inclined surface (41) and can be pushed by the first inclined surface (33) when the footrest (3) moves downward is provided on the brake driving rod (4). When the first inclined surface (33) pushes the second inclined surface (41) downward, the brake driving rod (4) moves horizontally to drive the brake mechanism (200) of the stroller to brake or release the brake.

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