Baby stroller reciprocating brake system

Abstract

The present invention discloses a reciprocating brake system for a baby stroller, wherein a brake mechanism on a frame can brake wheels, a brake pedal seat can slide a set distance on a brake fixing member installed on the frame, and the reciprocating sliding of the brake pedal seat can trigger a start-stop switch of the brake mechanism, a first elastic member provides elastic force to the brake pedal seat, and can slide a set distance on the brake pedal seat or the brake fixing member, and a sliding direction of a sliding pin intersects with a sliding direction of the brake pedal seat, and the sliding pin can slide in an annular track slot of the brake fixing member or the brake pedal seat, and two open-shaped card points with different heights along the sliding direction of the brake pedal seat are formed on the annular track slot, and the sliding pin can enter the interior of the card point along one side wall of the card point opening or exit to the outside of the card point along the other side wall of the card point opening, and the sliding pin can be stopped and positioned inside the card point. The present invention has a simple structure, cyclic operation, and convenient operation, thereby improving braking safety.

Description

Technical Field

[0001] The invention relates to a baby stroller, in particular to a cyclic reciprocating brake system for the baby stroller. Background Art

[0002] When traveling with infants and young children, parents will choose to use a stroller. Pushing a baby in a stroller can save physical energy and is also convenient for parents to handle some daily affairs. When parents need to stop, they need to use a brake mechanism to brake the rear wheels of the stroller to prevent the stroller from moving on its own and affecting the safety of the baby. Currently, the common brake mechanism of baby strollers is that parents have to step on the brake pads on the two rear wheel axles respectively to brake through the friction between the brake pads. When pushing, the brake pads on the two rear wheels need to be lifted separately, which is inconvenient to operate and is prone to wear and damage due to long-term use, resulting in brake failure. Summary of the invention

[0003] In order to overcome the above defects, the present invention provides a baby stroller reciprocating brake system, which can.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a reciprocating brake system for a baby stroller, including a brake fixing part, a brake pedal seat, a sliding pin, a first elastic part and a brake braking mechanism, wherein the brake braking mechanism is installed on the baby stroller frame, the brake braking mechanism can brake the wheels, the brake fixing part is fixedly installed on the baby stroller frame, the brake pedal seat can be slid to a set distance and is installed on the brake fixing part, the reciprocating sliding of the brake pedal seat can trigger the start-stop switch of the brake braking mechanism, the first elastic part provides the brake pedal seat with an elastic force to slide in the direction of triggering the start-stop switch of the brake stop mechanism, and the brake pedal seat Or a sliding pin is provided on the brake fixing part which can slide a set distance, and the sliding direction of the sliding pin intersects with the sliding direction of the brake pedal seat. A circular track slot is correspondingly formed on the brake fixing part or the brake pedal seat, and the circular track slot is extended in parallel to the sliding direction of the brake pedal seat. The sliding pin can be slidably inserted into the circular track slot, and two open-shaped card points with different heights along the sliding direction of the brake pedal seat are formed on the circular track slot. The sliding pin can enter the interior of the card point along one side wall of the card point opening or exit to the outside of the card point along the other side wall of the card point opening, and the sliding pin can be stopped and positioned inside the card point.

[0005] As a further improvement of the present invention, the sliding direction of the sliding pin is arranged perpendicular to the sliding direction of the brake pedal seat.

[0006] As a further improvement of the present invention, the annular track slot includes two guide sections extending along the sliding direction of the brake pedal seat and two limiting sections extending along the sliding direction perpendicular to the brake pedal seat. The two card points are V-shaped curve structures respectively located on the two limiting sections, and the direction of the V-shaped opening is consistent with the elastic force direction of the first elastic member.

[0007] As a further improvement of the present invention, the two card points include a V-shaped recessed structure and a V-shaped raised structure located on the two side walls of the limiting section, and the inclination angle of one side wall of the V-shaped recessed structure is greater than the inclination angle of the other side wall, and the inclination angle of one side of the V-shaped raised structure is less than the inclination angle of the other side wall, and one side wall of the V-shaped raised structure is directly opposite to one side wall of the V-shaped recessed structure.

[0008] As a further improvement of the present invention, the brake fixing part includes a brake sleeve, a left brake cover and a right brake cover. The two ends of the brake sleeve are respectively fixedly connected to the wheel seats of the two rear wheels of the baby stroller frame. The left brake cover and the right brake cover are respectively fixedly installed on both sides of the brake sleeve in a docking and combined state. An annular track slot is formed on at least one inner wall of the left brake cover and the right brake cover, and a hollow structure for the brake pedal seat to be linearly slidably inserted is correspondingly formed on the circumferential outer wall of the sleeve and the side walls of the left brake cover and the right brake cover.

[0009] As a further improvement of the present invention, the brake pedal seat is further provided with an elongated guide hole extending along its sliding direction, and a guide rod which can be slidably inserted into the elongated guide hole is fixedly provided between the left brake cover and the right brake cover.

[0010] As a further improvement of the present invention, the brake pedal seat is also provided with a spring hole extending along its sliding direction and connected with the elongated guide hole, the first elastic member is inserted into the spring hole, one end of the first elastic member is tightly against the side wall of the guide rod, and a pedal cover is removably fixed to one end of the brake pedal seat, and the other end of the first elastic member is tightly against the inner wall of the pedal cover.

[0011] As a further improvement of the present invention, the brake pedal seat is respectively formed with a first inclined surface on the two outer side walls along the extension direction of the brake sleeve, and two brake guide rods are inserted in the brake sleeve. A second inclined surface is formed at one end of the two brake guide rods, and the other end of the brake guide rod is respectively in contact with the start and stop switches of the brake mechanisms of the two rear wheels, and the first inclined surface can be in close contact with the second inclined surface.

[0012] As a further improvement of the present invention, the brake pedal seat is located at both ends of the first inclined surface and has first straight surfaces extending along its sliding direction, and the brake guide rod is located at both ends of the second inclined surface and has second straight surfaces parallel to the first straight surface, and the first straight surface and the second straight surface can correspond to each other.

[0013] As a further improvement of the present invention, the brake mechanism includes a brake block, a brake guide rod, a second elastic member and a brake inner gear ring coaxially fixed on the wheel. The brake block can be installed on the wheel seat of the rear wheel in a radially sliding manner along the wheel. One end of the brake block is provided with a latch tooth extending along the axial direction of the wheel. The latch tooth is inserted in the brake inner gear ring and can be engaged and clamped with the brake inner gear ring. The second elastic member provides the brake block with an elastic force to keep the latch tooth engaged and clamped with the brake inner gear ring. The brake guide rod can be slidably installed on the wheel seat of the rear wheel. One end of the brake guide rod is tightly pressed against the other end of the brake block, and the sliding of the brake guide rod can press the brake block to overcome the elastic force of the second elastic member and slide along the radial direction of the wheel. The other end of the brake guide rod is in close contact with the other end of the brake guide rod through a third inclined surface.

[0014] The beneficial effects of the present invention are as follows: the present invention drives the sliding pin to slide unidirectionally in the annular track slot by pressing the brake pedal seat up and down on the brake fixing part; when it is located at two different upper and lower card points, after releasing the brake pedal seat, the sliding pin will be positioned at different card points, so that the brake mechanism of the baby stroller is in a stable braking state or a brake cancellation pushing state; the mechanism realizes synchronous braking or synchronous cancellation of the brakes on the two rear wheels of the baby stroller; during operation, the parent does not need to bend over to operate, but only needs to press the brake pedal seat; the structure is simple, the operation is cyclical, and the operation is convenient; the brake mechanism brakes by meshing the card teeth with the inner gear ring of the wheel, thereby avoiding wear of the brake pads and improving braking safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the exploded state of the present invention;

[0016] Figure 2 It is a front view of the exploded state of the present invention;

[0017] Figure 3 It is a schematic diagram of the structural principle of the present invention;

[0018] Figure 4 It is a front view of the brake pedal seat of the present invention;

[0019] Figure 5 It is a front view of the left brake cover of the present invention;

[0020] Figure 6 It is a front view of the right brake cover of the present invention;

[0021] Figure 7 It is a diagram of the disassembled state of the brake mechanism of the present invention. DETAILED DESCRIPTION

[0022] Embodiment: A reciprocating brake system for a baby stroller, comprising a brake fixing part, a brake pedal seat 1, a sliding pin 2, a first elastic member 3 and a brake mechanism, wherein the brake mechanism is mounted on a baby stroller frame, the brake mechanism can brake a wheel 4, the brake fixing part is fixedly mounted on the baby stroller frame, the brake pedal seat 1 can be slidably mounted on the brake fixing part for a set distance, the reciprocating sliding of the brake pedal seat 1 can trigger a start / stop switch of the brake mechanism, the first elastic member 3 provides the brake pedal seat 1 with an elastic force to slide in the direction of triggering the start / stop switch of the brake stop mechanism, and a sliding pin 2 ( This can be achieved by setting a long strip slot 24), the sliding direction of the sliding pin 2 intersects with the sliding direction of the brake pedal seat 1, and a circular track slot 5 is correspondingly formed on the brake fixing part or the brake pedal seat 1, and the circular track slot 5 is extended and arranged in parallel to the sliding direction of the brake pedal seat 1, and the sliding pin 2 can be slidably inserted in the circular track slot 5, and two open-shaped card points 6 with different heights along the sliding direction of the brake pedal seat 1 are formed on the circular track slot 5, and the sliding pin 2 can enter the interior of the card point 6 along one side wall of the opening of the card point 6 or exit to the outside of the card point 6 along the other side wall of the opening of the card point 6, and the sliding pin 2 can be stopped and positioned inside the card point 6.

[0023] When the baby stroller is in a parking state, the sliding pin 2 is stuck in a blocking point 6. Under the elastic force of the first elastic member 3, the sliding pin 2 cannot actively slide out of the blocking point 6. At this time, the brake pedal seat 1 is in a state of being separated from the start-stop switch of the brake mechanism. At this time, the brake mechanism maintains a braking state, and the wheel cannot rotate freely. When the baby stroller needs to be pushed, it is only necessary to press the brake pedal seat 1, and the sliding pin 2 slides out of the blocking point 6, and slides to another blocking point 6 along the annular track slot 5 under the elastic force or pressing force of the first elastic member 3 to be positioned, so that the brake pedal seat 1 slides on the brake fixing member to the position of triggering the start-stop switch of the brake mechanism, and stops at this position. At this time, the brake mechanism is in a non-braking state, and the rear wheels of the baby stroller can rotate freely, meeting the needs of pushing the baby stroller. When the baby stroller needs to brake again, it is only necessary to press the brake pedal seat 1 again, so that the sliding pin 2 slides into a blocking point 6 again and is in a blocking position. The braking system of the baby stroller realizes the alternating braking and releasing cycles by pressing the brake pedal seat 1, which has a simple structure, ingenious design, and convenient operation.

[0024] The sliding direction of the sliding pin 2 is perpendicular to the sliding direction of the brake pedal seat 1. The brake pedal seat 1 slides longitudinally on the brake fixing member, and the sliding pin 2 slides horizontally on the brake pedal seat 1 or the brake fixing member. Of course, the two can also cross and extend at an acute angle, as long as the sliding pin 2 can slide normally in the annular track slot 5.

[0025] The annular track slot 5 includes two guide segments extending along the sliding direction of the brake pedal seat 1 and two limit segments extending perpendicular to the sliding direction of the brake pedal seat 1. The two clamping points 6 are V-shaped curve structures respectively located on the two limit segments, and the V-shaped opening direction is consistent with the elastic force direction of the first elastic member 3. The annular track slot 5 forms a square track, the two longitudinal segments of the square track are guide segments, and the two transverse segments of the square track are limit segments. The clamping points 6 are formed on the two transverse segments, and the overall structure is a V-shaped curve. When the sliding pin 2 slides into the V-shaped curve structure, it will be stuck in the V-shaped curve to form a stop position. When the brake pedal seat 1 is pressed again, the sliding pin 2 will move along the side wall of the V-shaped curve structure to exit the V-shaped curve structure.

[0026] The two clamping points 6 both include a V-shaped recessed structure and a V-shaped raised structure on the two side walls of the limiting section, and the inclination angle of one side wall of the V-shaped recessed structure is greater than the inclination angle of the other side wall, and the inclination angle of one side of the V-shaped raised structure is less than the inclination angle of the other side wall, and one side wall of the V-shaped raised structure is directly opposite to the one side wall of the V-shaped recessed structure.

[0027] Since the inclination angles of the side walls corresponding to the V-shaped convex structure and the V-shaped concave structure are just opposite, the sliding pin 2 can only enter the card point 6 from one side and can only exit the card point 6 from the other side, and no reverse movement will occur, thereby forming a directionality in the sliding of the sliding pin 2 in the annular track slot 5, and it can only slide in a circle reciprocating in one direction, and this kind of curved structure can keep the sliding pin 2 in a stable state inside it, and the sliding pin 2 cannot fall out without external force pressing the brake pedal seat 1. At the same time, when the brake pedal seat 1 is pressed, the sliding pin 2 can smoothly exit from the exit of the card point 6 and smoothly enter the card point 6 from the entrance, that is, this kind of structure can guide the sliding pin 2 to enter and leave the card point 6, thereby realizing the smooth triggering and disengagement operation of the brake stop switch.

[0028] The brake fixing part includes a brake sleeve 7, a left brake cover 8 and a right brake cover 9. The two ends of the brake sleeve 7 are respectively fixedly connected to the wheel seats 21 of the two rear wheels of the baby carriage frame. The left brake cover 8 and the right brake cover 9 are respectively fixedly installed on both sides of the brake sleeve 7 in a docking and combined state. The annular track slot 5 is formed on at least one inner side wall of the left brake cover 8 and the right brake cover 9. A hollow structure 10 for the brake pedal seat 1 to slide linearly is formed on the outer circumferential wall of the vehicle sleeve and the side walls of the left brake cover 8 and the right brake cover 9. The vehicle sleeve is conveniently installed on the frame, and the left brake cover 8 and the right brake cover 9 can form a complex annular track slot 5 through plastic parts. The three are assembled together to form a brake fixing part, which is convenient for processing, manufacturing and assembly.

[0029] The brake pedal seat 1 is also provided with an elongated guide hole 11 extending along the sliding direction thereof, and a guide rod 12 which can be slidably inserted into the elongated guide hole 11 is fixedly provided between the left brake cover 8 and the right brake cover 9. The guide rod 12 cooperates with the elongated guide hole 11 to realize the sliding guidance of the brake pedal seat 1 and the guide distance limitation.

[0030] The brake pedal seat 1 is also provided with a spring hole 13 extending along its sliding direction and communicating with the long strip guide hole 11. The first elastic member 3 is inserted into the spring hole 13, and one end of the first elastic member 3 is tightly against the side wall of the guide rod 12. A pedal cover 14 is detachably fixed at one end of the brake pedal seat 1, and the other end of the first elastic member 3 is tightly against the inner wall of the pedal cover 14. The first elastic member 3 can be a spring, and its installation channel is formed by the spring hole 13, and its two ends are limited by the brake pedal cover 14 and the guide rod 12.

[0031] The first inclined surface 15 is formed on the two outer side walls of the brake pedal seat 1 along the extension direction of the brake sleeve 7. Two brake guide rods 16 are inserted in the brake sleeve 7. One end of the two brake guide rods 16 is formed with a second inclined surface 17. The other end of the brake guide rod 16 is in contact with the start-stop switch of the brake mechanism of the two rear wheels. The first inclined surface 15 and the second inclined surface 17 can be in close contact. The brake pedal seat 1 slides in a direction perpendicular to the brake sleeve 7 to drive the brake guide rod 16 to slide left and right in the brake sleeve 7, thereby triggering the start-stop switch of the brake mechanism on the rear wheels at both ends of the brake sleeve 7.

[0032] The brake pedal seat 1 is located at both ends of the first inclined surface 15, respectively, with first straight surfaces extending along the sliding direction thereof, and the brake guide rod 16 is located at both ends of the second inclined surface 17, respectively, with second straight surfaces parallel to the first straight surface, and the first straight surface and the second straight surface can be correspondingly fitted. The first inclined surface 15 and the second inclined surface 17 cooperate to drive the brake guide rod 16, and when the baby carriage is in a braking or pushing state, the brake pedal seat 1 and the brake guide rod 16 can maintain a stable position state through the straight surface contact parallel to the sliding direction of the brake pedal seat 1, which is convenient for maintaining a stable braking state or pushing state.

[0033] The brake mechanism includes a brake shoe 18, a brake guide rod 19, a second elastic member and a brake inner gear ring 20 coaxially fixed on the wheel. The brake shoe 18 is installed on the wheel seat 21 of the rear wheel so as to slide along the radial direction of the wheel. One end of the brake shoe 18 is provided with a latching tooth 22 extending along the axial direction of the wheel. The latching tooth 22 is inserted into the brake inner gear ring 20 and can be engaged and clamped with the brake inner gear ring 20. The second elastic member provides the brake shoe 18 with an elastic force to keep the latching tooth 22 engaged and clamped with the brake inner gear ring 20. The brake guide rod 19 is installed on the wheel seat 21 of the rear wheel so as to slide. One end of the brake guide rod 19 is tightly pressed against the other end of the brake shoe 18, and the sliding of the brake guide rod 19 can press the brake shoe 18 to overcome the elastic force of the second elastic member and slide along the radial direction of the wheel. The other end of the brake guide rod 19 is in close contact with the other end of the brake guide rod 16 through the third inclined surface 23.

[0034] In the normal state, the brake block 18 is kept in meshing and locking state with the inner gear ring on the wheel under the action of the second elastic member. When the stroller needs to be pushed, the brake pedal seat 1 only needs to be pressed. The brake pedal seat 1 slides and drives the brake guide rod 16 to extend, thereby driving the brake guide rod 19 to press down the brake block 18, so that the brake block 18 overcomes the elastic force and slides along the radial direction of the wheel. The locking teeth 22 on the brake block 18 are disengaged from the inner gear ring of the wheel. At this time, the wheel can be rotated at will. The structure is simple, and the wheel braking is achieved through the meshing structure of the locking teeth 22. The braking is firm and stable, avoiding brake failure due to long-term use.

Claims

1. A reciprocating braking system for a baby carriage, Features: The invention comprises a brake fixing part, a brake pedal seat (1), a sliding pin (2), a first elastic part (3) and a brake mechanism, wherein the brake mechanism is mounted on a baby carriage frame, the brake mechanism can brake a wheel (4), the brake fixing part is fixedly mounted on the baby carriage frame, the brake pedal seat can be slidably mounted on the brake fixing part for a set distance, the brake pedal seat can slide back and forth to trigger a start / stop switch of the brake mechanism, the first elastic part provides the brake pedal seat with an elastic force to slide in a direction to trigger the start / stop switch of the brake mechanism, the brake pedal seat or the brake fixing part is provided with a sliding pin that can slide for a set distance, The sliding direction of the sliding pin intersects with the sliding direction of the brake pedal seat. A circular track slot (5) is correspondingly formed on the brake fixing member or the brake pedal seat, and the circular track slot is extended in parallel to the sliding direction of the brake pedal seat. The sliding pin can be slidably inserted into the circular track slot. Two opening-shaped clamping points (6) with different heights along the sliding direction of the brake pedal seat are formed on the circular track slot. The sliding pin can enter the inside of the clamping point along one side wall of the clamping point opening or exit to the outside of the clamping point along the other side wall of the clamping point opening, and the sliding pin can be stopped and positioned inside the clamping point. The brake fixing member includes a brake sleeve (7 ), a left brake cover (8) and a right brake cover (9), the two ends of the brake sleeve are respectively fixedly connected to the wheel seats of the two rear wheels of the baby stroller frame, the left brake cover and the right brake cover are respectively fixedly installed on both sides of the brake sleeve in a docking and combined state, an annular track slot is formed on at least one inner side wall of the left brake cover and the right brake cover, and a hollow structure (10) for the brake pedal seat to be linearly slidably inserted is formed on the circumferential outer side wall of the vehicle sleeve and on the side walls of the left brake cover and the right brake cover, the brake mechanism comprises a brake block (18), a brake guide rod (19), a second elastic member and a brake inner gear ring (20) coaxially fixed on the wheel, The brake block is mounted on the wheel seat (21) of the rear wheel so as to be slidable along the radial direction of the wheel. A latching tooth (22) extending along the axial direction of the wheel is provided at one end of the brake block. The latching tooth is inserted into the brake inner gear ring and can be meshed and locked with the brake inner gear ring. The second elastic member provides the brake block with an elastic force to keep the latching tooth meshed and locked with the brake inner gear ring. The brake guide rod is mounted on the wheel seat of the rear wheel so as to be slidable. One end of the brake guide rod is tightly pressed against the other end of the brake block. The brake guide rod slides to press the brake block to overcome the elastic force of the second elastic member and slide along the radial direction of the wheel. The other end of the brake guide rod is in close contact with the other end of the brake guide rod via a third inclined surface (23).

2. The reciprocating braking system for a baby stroller according to claim 1, Features: The sliding direction of the sliding pin is perpendicular to the sliding direction of the brake pedal seat.

3. The reciprocating braking system for a baby stroller according to claim 1, Features: The annular track slot includes two guide sections extending along the sliding direction of the brake pedal seat and two limit sections extending perpendicular to the sliding direction of the brake pedal seat. The two card points are V-shaped curve structures respectively located on the two limit sections, and the V-shaped opening direction is consistent with the elastic force direction of the first elastic member.

4. The reciprocating braking system for a baby stroller according to claim 3, Features: Both card points include a V-shaped recessed structure and a V-shaped raised structure located on the two side walls of the limiting section, and the inclination angle of one side wall of the V-shaped recessed structure is greater than the inclination angle of the other side wall, and the inclination angle of one side of the V-shaped raised structure is less than the inclination angle of the other side wall, and one side wall of the V-shaped raised structure is arranged opposite to one side wall of the V-shaped recessed structure.

5. The reciprocating braking system for a baby stroller according to claim 1, Features: The brake pedal seat is also provided with a long strip guide hole (11) extending along the sliding direction thereof, and a guide rod (12) which can be slidably inserted into the long strip guide hole is fixedly provided between the left brake cover and the right brake cover.

6. The reciprocating braking system for a baby stroller according to claim 5, Features: The brake pedal seat is also provided with a spring hole (13) extending along its sliding direction and connected to the long strip guide hole, a first elastic member is inserted into the spring hole, one end of the first elastic member is tightly against the side wall of the guide rod, and a pedal cover (14) is detachably fixed to one end of the brake pedal seat, and the other end of the first elastic member is tightly against the inner wall of the pedal cover.

7. The reciprocating braking system for a baby stroller according to claim 1, Features: The brake pedal seat has first inclined surfaces (15) formed on the two outer side walls along the extension direction of the brake sleeve, two brake guide rods (16) are inserted into the brake sleeve, and one end of the two brake guide rods has a second inclined surface (17), and the other end of the brake guide rods is respectively in contact with the start-stop switch of the brake mechanism of the two rear wheels, and the first inclined surface can be in close contact with the second inclined surface.

8. The reciprocating braking system for a baby carriage according to claim 7, Features: The brake pedal seat is located at both ends of the first inclined surface, and the first straight surfaces extending along its sliding direction are respectively provided. The brake guide rod is located at both ends of the second inclined surface, and the second straight surfaces are respectively provided with second straight surfaces parallel to the first straight surfaces. The first straight surfaces can correspond to and fit with the second straight surfaces.

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