Brake mechanism of stroller

Abstract

The invention discloses a child stroller brake mechanism which comprises a wheel seat, a connecting shaft used for being connected to a child stroller frame is fixedly arranged on the wheel seat, a wheel fork is connected to the lower end of the wheel seat, a wheel is connected to the wheel fork, a plurality of brake grooves are formed in the wheel in the circumferential direction, and the brake grooves are connected with the connecting shaft. The wheel fork is rotationally connected with a rotating block, the rotating block is movably connected with a brake block which can be clamped with or separated from the brake groove when the rotating block rotates relative to the wheel fork, and the wheel fork is provided with a transmission piece which can move relative to the wheel fork to drive the rotating block to rotate relative to the wheel fork. A first reset spring capable of pushing the rotating block to rotate and reset is further arranged between the rotating block and the wheel fork, a sliding shaft capable of sliding relative to the connecting shaft is arranged in the connecting shaft, and the lower end of the sliding shaft is at least indirectly connected with the transmission piece so as to drive the transmission piece to move. The brake is simple in structure and stable and smooth in braking.

Description

Technical Field

[0001] The present invention relates to a braking mechanism for a baby stroller.

Background Art

[0002] Baby strollers are common products in the growth process of infants and young children. Users can place children in the seats of baby strollers and push them out. In order to facilitate the baby stroller to change direction during travel, the wheels of the existing baby strollers generally adopt a universal structure that can rotate 360 degrees in the horizontal plane. In order to avoid interference between the braking structure of the baby stroller and the pivot shaft of the wheel during braking, the braking structure is generally arranged outside the wheel fork, with a relatively complex structure and the brakes are prone to jamming and being unsmooth.

[0003] Therefore, the present invention is precisely generated based on the above deficiencies.

Summary of the Invention

[0004] The object of the present invention is to overcome the deficiencies of the prior art and provide a braking mechanism for a baby stroller with a simple structure and stable and smooth braking.

[0005] The present invention is realized through the following technical solutions:

[0006] A braking mechanism for a baby stroller includes a wheel seat. A connecting shaft for connecting to the frame of the baby stroller is fixedly arranged on the wheel seat. A wheel fork is connected to the lower end of the wheel seat. A wheel is connected to the wheel fork. A plurality of braking grooves are arranged on the wheel along the circumferential direction. A rotating block is rotatably connected to the wheel fork. A braking block that can be engaged with or disengaged from the braking groove when rotating relative to the wheel fork is movably connected to the rotating block. A transmission member that can move relative to the wheel fork to drive the rotating block to rotate relative to the wheel fork is arranged on the wheel fork. A first return spring that can push the rotating block to rotate and reset is further arranged between the rotating block and the wheel fork. A sliding shaft that can slide relative to the connecting shaft is arranged inside the connecting shaft. The lower end of the sliding shaft is at least indirectly connected to the transmission member to drive the transmission member to move.

[0007] An activity seat that can be pushed downward by the sliding shaft is arranged inside the wheel seat. A pushing portion that can push the transmission member to move when sliding downward is arranged on the activity seat. A second return spring that can push the activity seat to reset is further arranged between the activity seat and the upper end of the wheel fork.

[0008] The pushing portion is a push rod that is arranged on the activity seat and extends horizontally. A guiding hole for the push rod to pass through is arranged on the wheel fork. The push rod abuts against the transmission member and can push the transmission member to move relative to the wheel fork.

[0009] The transmission member includes a transmission plate. The upper end of the transmission plate has an abutting surface. The abutting surface abuts against the top push rod, so that when the movable seat moves downward, the top push rod pushes the transmission plate to move relative to the wheel fork. A top push spring is provided between the transmission plate and the rotating block. When the transmission plate is pushed by the top push rod to move relative to the wheel fork, the top push spring is pushed by the transmission plate to make the rotating block rotate relative to the wheel fork.

[0010] The included angle between the moving direction of the top push rod and the moving direction of the transmission plate is an acute angle.

[0011] The brake block includes a transverse brake shaft that can engage or disengage with the brake groove. A connecting block extending to one side is provided at the outer end of the brake shaft. The upper end of the connecting block is rotatably connected to the rotating block.

[0012] A strip-shaped hole for the brake shaft to pass through and capable of controlling the movement track of the brake shaft when the rotating block rotates relative to the wheel fork is provided on the wheel fork along its length direction.

[0013] An arc-shaped hole is provided on the rotating block, and a guiding column penetrating into the arc-shaped hole to guide the rotational movement of the rotating block is provided on the wheel fork.

[0014] A plurality of protruding columns are provided on the wheel fork, and a mating hole for mating and guiding with the corresponding protruding column is provided on the transmission plate.

[0015] The wheel seat is rotatably connected to the wheel fork, and a shock-absorbing spring is further provided between the wheel seat and the wheel fork.

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

[0017] 1. When the brake mechanism of the children's stroller of the present invention works, the sliding shaft is driven by an external force to slide. The sliding shaft drives the transmission member to move relative to the wheel fork, and the transmission member drives the rotating block to rotate relative to the wheel fork. During the rotation of the rotating block, the brake block is driven to move, so that the brake block engages with the brake groove on the wheel, and at this time, the braking of the wheel is realized. When it is necessary to release the brake, the external force applied to the sliding shaft is removed, and the first return spring pushes the rotating block to rotate back to its original position. The rotating block drives the brake block to disengage from the brake groove. At this time, both the transmission member and the sliding shaft return to their original positions. The entire brake mechanism of the children's stroller has a simple structure. Only by driving the sliding shaft to slide can the braking be realized. The operation is very convenient and fast, and the braking is smooth without jamming.

[0018] 2. The brake block of the present invention includes a brake shaft that crosses the strip-shaped hole on the wheel fork. When the rotating block rotates relative to the wheel fork, the strip-shaped hole and the brake shaft are in relative sliding fit to control the movement track of the brake shaft, so as to realize the stable engagement or disengagement of the brake shaft with the brake groove, and realize smooth braking or release of the brake.

[0019] 3. The transmission member of the present invention includes a transmission plate and a push spring. When the sliding shaft pushes the movable seat downward, the push rod on the movable seat pushes the abutting surface at the upper end of the transmission plate, enabling the transmission plate to slide along the length direction of the wheel fork, thereby converting the vertical movement of the sliding shaft into the oblique movement of the transmission plate. When the transmission plate slides along the wheel fork, it pushes the push spring, and the push spring further pushes the rotating block to rotate, thus achieving braking. By using the push spring to push the rotating block to rotate relative to the wheel fork, a buffering effect can be achieved, avoiding wear caused by rigid contact between the braking shaft and the part between two adjacent braking grooves. At the same time, the setting of the push spring also enables the braking shaft to enter the braking groove when the wheel moves slightly even if the braking shaft presses against the part between adjacent braking grooves during the movement of the braking shaft, playing a role in guiding the positioning.

Description of the Drawings

[0020] Figure 1 is the perspective view of the present invention;

[0021] Figure 2 is the exploded view of the present invention;

[0022] Figure 3 is Figure 2 the enlarged view at C in

[0023] Figure 4 is the side view of the present invention when not braking;

[0024] Figure 5 is Figure 4 the enlarged view at A in

[0025] Figure 6 is the side view of the present invention when braking;

[0026] Figure 7 is Figure 6 the enlarged view at B in

[0027] Figure 8 is one of the perspective views of the components of the present invention;

[0028] Figure 9 is the other perspective view of the components of the present invention.

Detailed Embodiment

[0029] The present invention will be further described below with reference to the drawings:

[0030] As Figure 1As shown in the figure, a braking mechanism for a baby stroller includes a wheel seat 1. A connecting shaft 2 for pivotally connecting to the frame of the baby stroller is fixedly provided on the wheel seat 1. A wheel fork 3 is connected to the lower end of the wheel seat 1, and a wheel 4 is connected to the wheel fork 3. The wheel fork 3 can be pivotally connected to the frame of the baby stroller through the connecting shaft 2 on the wheel seat 1, so that the wheel 4 can rotate 360 degrees in the horizontal plane direction and become a universal wheel that can be flexibly reversed.

[0031] As Figures 1 to 7 shown in the figure, a plurality of braking grooves 5 are provided on the wheel 4 along the circumferential direction. A rotating block 6 is rotatably connected to the wheel fork 3. A braking block 7 that can be engaged with or disengaged from the braking groove 5 when the rotating block 6 rotates relative to the wheel fork 3 is movably connected to the rotating block 6. A transmission member 8 that can move relative to the wheel fork 3 to drive the rotating block 6 to rotate relative to the wheel fork 3 is provided on the wheel fork 3. A first return spring 9 that can push the rotating block 6 to rotate and reset is further provided between the rotating block 6 and the wheel fork 3. A sliding shaft 10 that can slide relative to the connecting shaft 2 is provided inside the connecting shaft 2. The lower end of the sliding shaft 10 is at least indirectly connected to the transmission member 8 to drive the transmission member 8 to move. When the braking mechanism of the baby stroller works, the sliding shaft 10 is driven by an external force to slide. The sliding shaft 10 drives the transmission member 8 to move relative to the wheel fork 3. The transmission member 8 drives the rotating block 6 to rotate relative to the wheel fork 3. During the rotation of the rotating block 6, the braking block 7 is driven to move so that the braking block 7 is engaged with the braking groove 5 on the wheel 4, and at this time, the braking of the wheel is realized. When it is necessary to release the brake, the external force applied to the sliding shaft 10 is removed, and the first return spring 9 pushes the rotating block 6 to rotate and reset. The rotating block 6 drives the braking block 7 to disengage from the braking groove 5. At this time, both the transmission member 8 and the sliding shaft 10 are reset. The entire braking mechanism of the baby stroller has a simple structure. Only by driving the sliding shaft 10 to slide can the braking be realized. The operation is very convenient and fast, and the braking is smooth without jamming.

[0032] As Figure 3 、 Figure 8 and Figure 9 shown in the figure, the braking block 7 includes a transverse braking shaft 71 that can be engaged with or disengaged from the braking groove 5. A connecting block 72 extending to one side is provided at the outer end of the braking shaft 71. The upper end of the connecting block 72 is rotatably connected to the rotating block 6. A strip-shaped hole 31 for the braking shaft 71 to pass through and capable of controlling the movement track of the braking shaft 71 when the rotating block 6 rotates relative to the wheel fork 3 is provided on the wheel fork 3 along its length direction. The braking shaft 71 transversely passes through the strip-shaped hole 31 provided on the wheel fork 3. When the rotating block 6 rotates relative to the wheel fork 3, relative sliding will occur between the hole wall of the strip-shaped hole 31 and the braking shaft 71. The hole wall of the strip-shaped hole 31 can control the movement track of the braking shaft 71, so as to realize the stable engagement or disengagement of the braking shaft 71 with the braking groove 5 and realize smooth braking or release of the brake.

[0033] As Figures 2 to 7As shown, an active seat 11 that can be pushed downward by a sliding shaft 10 is provided inside the wheel seat 1. A pushing portion 12 is provided on the active seat 11, which can push the transmission member 8 to move when the active seat 11 slides downward. A second return spring 13 that can push the active seat 11 to reset is further provided between the active seat 11 and the upper end of the wheel fork 3. When the sliding shaft 10 is driven by an external force to push the active seat 11 downward, the pushing portion 12 on the active seat 11 pushes the transmission member 8, the transmission member 8 pushes the rotating block 6 to rotate, and the rotating block 6 drives the brake block 7 to move, thereby realizing braking. In the entire braking process, multiple components cooperate with each other. Only by driving the sliding shaft 10 can the braking operation be very convenient.

[0034] As Figure 5 and Figure 7 shown, the pushing portion 12 is a push rod provided on the active seat 11 and extending horizontally. A guiding hole 14 for the push rod to pass through is provided on the wheel fork 3. When the active seat 11 is pushed by the sliding shaft 10 to move, the guiding hole 14 can guide the push block on the active seat 11 so that the push rod abuts against the transmission member 8 and can smoothly push the transmission member 8 to move relative to the wheel fork 3.

[0035] As Figures 4 to 7 shown, the transmission member 8 includes a transmission plate 81. The upper end of the transmission plate 81 has an abutting surface 82. The abutting surface 82 abuts against the push rod, so that when the active seat 11 moves downward, the push rod pushes the transmission plate 81 to move relative to the wheel fork 3. A push spring 83 is provided between the transmission plate 81 and the rotating block 6. When the transmission plate 81 is pushed by the push rod to move relative to the wheel fork 3, the push spring 83 is pushed by the transmission plate 81 to make the rotating block 6 rotate relative to the wheel fork 3. The included angle R between the moving direction of the push rod and the moving direction of the transmission plate 81 is an acute angle. When the sliding shaft 10 pushes the active seat 11 downward, the push rod on the active seat 11 pushes the abutting surface 82 at the upper end of the transmission plate 81, so that the transmission plate 81 can slide along the length direction of the wheel fork 3, thereby converting the vertical movement of the sliding shaft 10 into the oblique movement of the transmission plate 81. When the transmission plate 81 slides along the wheel fork 3, it pushes the push spring 83, and the push spring 83 further pushes the rotating block 6 to rotate, thereby realizing braking. By using the push spring 83 to push the rotating block 6 to rotate relative to the wheel fork 3, a buffering effect can be achieved, avoiding wear caused by rigid contact between the brake shaft 71 and the part between two adjacent brake grooves 5. At the same time, the setting of the push spring 83 also enables the brake shaft 71 to enter the brake groove 5 when the wheel 4 moves slightly even when the brake shaft 71 moves and presses against the part between adjacent brake grooves, playing a role in guiding and positioning.

[0036] As Figure 2 、 Figure 6 and Figure 9As shown, an arc-shaped hole 61 is provided on the rotating block 6, and a guiding post 32 is provided on the wheel fork 3. The guiding post 32 penetrates into the arc-shaped hole 61 to guide the rotational movement of the rotating block 6, making the braking smooth and steady.

[0037] As Figure 2 , Figure 5 and Figure 7 As described, a plurality of protruding posts 33 are provided on the wheel fork 3, and a mating hole 84 that cooperates with and guides the corresponding protruding posts 33 is provided on the transmission plate 81. When the transmission plate 81 is pushed by a vertically moving push rod, it can move smoothly along the length direction of the wheel fork 3, thereby achieving smooth braking.

[0038] As Figure 1 and Figure 2 As shown, the wheel seat 1 is rotatably connected to the wheel fork 3, and a shock-absorbing spring 16 is further provided between the wheel seat 1 and the wheel fork 3. When the wheel 4 passes over an uneven road surface, the shock-absorbing spring 16 can play a role in shock absorption, making the children in the baby stroller comfortable.

[0039] The above has described this embodiment in detail with reference to the drawings. However, the present invention is not limited to the above embodiment. Within the knowledge scope of those of ordinary skill in the art in the said technical field, various changes can be made without departing from the gist of the present invention.

Claims

1. A braking mechanism for a child stroller, characterized in that: The invention comprises a wheel seat (1), wherein the wheel seat (1) is fixedly provided with a connecting shaft (2) for connecting to a child stroller frame, the lower end of the wheel seat (1) is connected with a wheel fork (3), the wheel fork (3) is connected with a wheel (4), the wheel (4) is provided with a plurality of brake grooves (5) along the circumferential direction, the wheel fork (3) is rotatably connected with a rotating block (6), the rotating block (6) is movably connected with a brake block (7) which can engage with or disengage from the brake groove (5) when the rotating block (6) rotates relative to the wheel fork (3), the wheel fork (3) is provided with a transmission member (8) which can move relative to the rotating block (6) to rotate relative to the wheel fork (3), a first reset spring (9) which can push the rotating block (6) to rotate and reset is also provided between the rotating block (6) and the wheel fork (3), a sliding shaft (10) which can slide relative to the connecting shaft (2) is provided inside the connecting shaft (2), the lower end of the sliding shaft (10) is at least indirectly connected to the transmission member (8) to drive the transmission member (8) to move.

2. The child stroller brake mechanism according to claim 1, characterized in that: The wheel seat (1) is provided with a movable seat (11) which can be pushed downward by the sliding shaft (10), and the movable seat (11) is provided with a pushing portion (12) which can push the transmission member (8) to move when the movable seat (11) slides downward. A second return spring (13) which can push the movable seat (11) to return to its original position is also provided between the movable seat (11) and the upper end of the wheel fork (3).

3. The braking mechanism of a stroller according to claim 2, characterized in that: The pushing portion (12) is a pushing rod which is arranged on the movable seat (11) and extends laterally. The wheel fork (3) is provided with a guide hole (14) for the pushing rod to pass through. The pushing rod abuts against the transmission member (8) and can push the transmission member (8) to move relative to the wheel fork (3).

4. The braking mechanism of a stroller according to claim 3, characterized in that: The transmission member (8) comprises a transmission plate (81), the upper end of the transmission plate (81) is provided with abutting surface (82), the abutting surface (82) abuts against a push rod, so that when the movable seat (11) moves downward, the push rod pushes the transmission plate (81) to move relative to the wheel fork (3), and a push spring (83) is provided between the transmission plate (81) and the rotating block (6). When the transmission plate (81) is pushed by the push rod and moves relative to the wheel fork (3), the push spring (83) is pushed by the transmission plate (81) so that the rotating block (6) rotates relative to the wheel fork (3).

5. The braking mechanism of a stroller according to claim 3, characterized in that: The included angle (R) between the moving direction of the push rod and the moving direction of the transmission plate (81) is an acute angle.

6. The braking mechanism of a stroller according to claim 1, characterized in that: The brake block (7) comprises a transverse brake shaft (71) which can be engaged with or disengaged from the brake groove (5); the outer end of the brake shaft (71) is provided with a connecting block (72) extending to one side thereof; the upper end of the connecting block (72) is rotatably connected to the rotating block (6).

7. The braking mechanism of a stroller according to claim 6, characterized in that: The wheel fork (3) is provided with a strip hole (31) along its length direction for the brake shaft (71) to pass through and can control the moving track of the brake shaft (71) when the rotating block (6) rotates relative to the wheel fork (3).

8. The braking mechanism of a stroller according to claim 1, characterized in that: The rotating block (6) is provided with an arc-shaped hole (61), and the wheel fork (3) is provided with a guide column (32) which penetrates into the arc-shaped hole (61) and guides the rotational movement of the rotating block (6).

9. The braking mechanism of a stroller according to claim 4, characterized in that: The wheel fork (3) is provided with a plurality of protruding columns (33), and the transmission plate (81) is provided with matching holes (84) for matching and guiding the corresponding protruding columns (33).

10. The braking mechanism of a stroller according to claim 1, characterized in that: The wheel seat (1) and the wheel fork (3) are rotatably connected, and a shock-absorbing spring (16) is also provided between the wheel seat (1) and the wheel fork (3).

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