Baby stroller brake mechanism

Abstract

A baby stroller brake mechanism comprises a pair of rear rods and a cross rod connecting the two rear rods, and the lower ends of the two rear rods are provided with connecting bases and rear wheels rotationally connected to the outer sides of the connecting bases respectively. A containing cavity is formed in the connecting base, a protruding shaft extending in the axial direction and a guide hole are arranged in the containing cavity, the periphery of the protruding shaft is sleeved with a rotating disc, and a plug pin is connected into the guide hole in a sliding mode. A brake pedal is rotationally connected to the transverse rod, traction ropes are arranged at the left end and the right end of the brake pedal respectively and connected with the rotating discs in the two connecting bases, and brake holes are formed in the end faces of the sides, close to the connecting bases, of the rear wheels. According to the brake mechanism of the baby stroller, the brake pedal synchronously controls the plug pins in the connecting seats on the two sides to be matched with the brake holes through the two traction ropes. Compared with the prior art, the brake mechanism has the advantages that the brake mechanism is more convenient to overhaul, the whole brake mechanism on the two rear wheels does not need to be disassembled, and the brake mechanism can be directly disassembled aiming at the fault side.

Description

TECHNICAL FIELD

[0001] The utility model relates to baby stroller technical field especially, it relates to baby stroller brake mechanism. BACKGROUND

[0002] Baby carriage is the important tool when baby travels, and the baby stroller has the brake function for the stop of the stroller. The brake mechanism of the existing baby stroller, such as the brake mechanism of the baby stroller disclosed in Chinese utility model patent CN207311569U, is controlled by a brake handle, and the brake devices on the left and right sides are driven by a brake wire. Although one brake wire can drive the brake devices on the left and right sides, it is not clear which brake device has a problem when a fault occurs, and it is necessary to disassemble and check in sequence. Moreover, when the brake wire has a problem, both rear wheel seats on the left and right sides need to be disassembled and processed during maintenance, which is relatively cumbersome. SUMMARY

[0003] The utility model provides a simple structure, convenient maintenance's baby stroller brake mechanism for above -mentioned problem.

[0004] The utility model provides a simple structure, convenient maintenance's baby stroller brake mechanism for above -mentioned problem.

[0005] The connecting seat is internally provided with a containing cavity, the containing cavity is internally provided with a convex shaft extending in the axial direction and a guide hole, the convex shaft is externally provided with a rotating disc, the guide hole is internally slidably connected with a bolt, one end of the bolt is abutted with the end face of the rotating disc, the end face of the rotating disc is provided with a driving inclined surface, one end of the bolt is provided with a transmission inclined surface matched with the driving inclined surface.

[0006] The horizontal pole is rotatably connected with a brake pedal, a rotating limiting mechanism is arranged between the brake pedal and the horizontal pole, the brake pedal is respectively provided with a traction rope at the left and right ends and connected with the rotating discs in the two connecting seats, and the end face of the rear wheel near the connecting seat is provided with brake holes uniformly distributed on the same circumference along the axial center.

[0007] The brake pedal rotates to drive the rotating disc to rotate circumferentially, the bolt slides in the axial direction under the cooperation of the transmission inclined surface and the driving inclined surface, and the other end of the bolt extends out of the guide hole and is located in the brake hole.

[0008] The guide hole is internally provided with a reset mechanism to keep the bolt in a retracting trend.

[0009] The utility model baby stroller brake mechanism is by brake pedal through two traction ropes synchronous control both sides connecting seat in the bolt and brake hole cooperation. After adopting above -mentioned structure, brake mechanism failure is easy to judge which side the failure occurs, and the advantage compared with prior art is that brake mechanism maintenance is more convenient, and the whole brake mechanism on two rear wheels does not need to be disassembled, and can be directly disassembled to the failure side.

[0010] As preferred, the reset mechanism includes a first reset spring sleeved on the outer periphery of the bolt, the inner wall of the guide hole is provided with a first step surface, the outer periphery of the bolt is provided with a second step surface, and the first reset spring is located between the first step surface and the second step surface.

[0011] As preferred, the bolt includes a pushing part and a plug-in part, the transmission inclined surface is located at one end of the pushing part, the other end of the pushing part is provided with a connecting hole extending along the axial direction thereof, one end of the plug-in part is slidably connected in the connecting hole, and the second step surface is formed between the outer wall of the pushing part and the outer wall of the plug-in part; a first limiting pin is arranged in the plug-in part, a first limiting hole extending along the length direction of the connecting hole is arranged on the hole wall of the connecting hole, the two ends of the first limiting pin are slidably connected in the first limiting hole, and a second reset spring is arranged between one end of the plug-in part and the inner end of the connecting hole. In this way, when the bolt is not aligned with the brake hole, the plug-in part can be slightly retracted into the pushing part, thereby playing a buffering role and avoiding violent insertion into the rear wheel to cause the bolt to break.

[0012] As preferred, the inner wall of the guide hole is provided with a guide groove extending along the axial direction thereof, the outer wall of the pushing part is provided with a guide block, and the guide block is slidably connected in the guide groove. In this way, the bolt is axially slidably guided and can be prevented from rotating circumferentially.

[0013] As preferred, the center of the convex shaft is provided with a shaft hole connected with the rear wheel.

[0014] As preferred, the middle part of the horizontal rod is bent forward to form a concave, and the brake pedal is located in the concave. The concave provides more storage space for the cloth cover after the stroller is folded, and the stroller has a smaller size after being folded.

[0015] The brake pedal includes a rotating cylinder and a handle connected to the outer periphery of the rotating cylinder, the rotating cylinder is rotatably connected to the horizontal rod, a shaft sleeve is sleeved on the horizontal rod, and the two ends of the rotating cylinder are rotatably connected in the shaft sleeve; the rotation limiting mechanism includes a plug block and at least two insertion grooves arranged in the shaft sleeve, the insertion grooves extend circumferentially along the shaft sleeve, one end of the inner wall of the rotating cylinder is provided with a sliding groove, the plug block is slidably connected in the sliding groove, a third reset spring is arranged between the inner end of the plug block and the inner end of the sliding groove to make the plug block have a tendency to move outward, a second limiting hole extending along the length direction of the plug block is arranged in the plug block, and a second limiting pin protruding in the second limiting hole is arranged in the sliding groove. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the brake mechanism of the baby stroller of the utility model.

[0017] Figure 2 It is an explosion view of the brake mechanism of the baby stroller of the utility model.

[0018] Figure 3 It is a structure schematic view of the connecting seat of the brake mechanism of the baby stroller of the utility model.

[0019] Figure 4 It is a sectional view of the brake mechanism of the baby stroller of the utility model.

[0020] Figure 5 It is a structure schematic view of the brake pedal of the brake mechanism of the baby stroller of the utility model.

[0021] Figure 6 It is a structure schematic view of the bolt of the brake mechanism of the baby stroller of the utility model.

[0022] Figure 7 It is a structure schematic view of the baby stroller folding state of the brake mechanism of the baby stroller of the utility model.

[0023] As shown in the figure: 1, rear rod, 2, cross rod, 20, inner recess, 21, shaft sleeve, 210, insertion slot, 3, connecting seat, 30, containing cavity, 31, convex shaft, 310, shaft hole, 32, guide hole, 322, guide slot 4, rear wheel, 41, brake hole, 5, rotating disc, 51, driving slope, 6, bolt, 61, pushing part, 610, transmission slope, 611, second step surface, 612, connecting hole, 6120, first limiting hole, 613, guide block, 62, plug-in part, 621, first limiting pin, 622, second return spring, 63, first return spring, 64, end cover, 7, brake pedal, 71, rotating cylinder, 710, sliding slot, 7101, second limiting pin, 72, pedal handle, 73, plug block, 730, second limiting hole, 731, third return spring, 8, traction rope. DETAILED DESCRIPTION

[0024] The utility model is further described below in combination with the drawings and specific embodiments.

[0025] As Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a kind of baby stroller brake mechanism, including a pair of rear poles 1 and the crossbar 2 connecting two rear poles 1, the lower end of two rear poles 1 is equipped with connecting seat 3 and the rear wheel 4 rotatably connected to the outside of connecting seat 3 respectively.The connecting seat 3 is equipped with the accommodation cavity 30 in it, and the end opening of the accommodation cavity 30 is equipped with end cover 64, and the accommodation cavity 30 is equipped with the convex shaft 31 and guide hole 32 extending in the axial direction, and the center of the convex shaft 31 is equipped with the shaft hole 310 connected with the rear wheel 4.

[0026] The outer periphery of the convex shaft 31 is equipped with rotating disc 5, and the guide hole 32 is slidably connected with the bolt 6, and one end of the bolt 6 is abutted with the end face of the rotating disc 5, and the end face of the rotating disc 5 is equipped with driving slope 51, and one end of the bolt 6 is equipped with transmission slope 610 matched with the driving slope 51.

[0027] The crossbar 2 is rotatably connected with brake pedal 7, and brake pedal 7 is equipped with rotating limiting mechanism between crossbar 2, and brake pedal 7 is equipped with traction rope 8 connected with the rotating disc 5 in two connecting seats 3 respectively at left and right ends, and the end face of rear wheel 4 near connecting seat 3 is equipped with brake hole 41 on the same circumference uniformly distributed along the axis.

[0028] Brake pedal 7 rotates to pull the rotating disc 5 to rotate circumferentially, and the bolt 6 slides axially under the cooperation of transmission slope 610 and driving slope 51, and the other end of the bolt 6 extends out of the guide hole 32 and is located in the brake hole 41.

[0029] The guide hole 32 is equipped with reset mechanism to keep the bolt 6 retracting tendency, and the reset mechanism includes the first reset spring 63 sleeved on the outer periphery of the bolt 6.The inner wall of the guide hole 32 is equipped with the first step surface 321, and the outer periphery of the bolt 6 is equipped with the second step surface 611, and the first reset spring 63 is abutted between the first step surface 321 and the second step surface 611.

[0030] Brake pedal 7 includes rotating cylinder 71 and handle 72 connected to the outer periphery of rotating cylinder 71, and rotating cylinder 71 is rotatably connected to crossbar 2, and crossbar 2 is sleeved with shaft sleeve 21, and rotating cylinder 71 is rotatably connected to shaft sleeve 21 at both ends.Rotating limiting mechanism includes plug 73 and two insertion slots 210 arranged in shaft sleeve 21, and insertion slot 210 extends circumferentially along shaft sleeve 21, and one end of the inner wall of rotating cylinder 71 is equipped with sliding groove 710.Plug 73 is slidably connected in sliding groove 710, and third reset spring 731 is arranged between the inner end of plug 73 and the inner end of sliding groove 710 to keep plug 73 retracting tendency.Plug 73 is equipped with second limiting hole 730 extending along its length direction, and second limiting pin 7101 is protruded in sliding groove 710 and inserted in second limiting hole 730.

[0031] When the brake pedal 7 is pressed, the rotating drum 71 rotates, and the traction rope 8 of the rotating drum 71 pulls the rotating disk 5, causing the pin 6 to slide axially into the brake hole 41 of the rear wheel 4. At this time, the insert block 73 is inserted into one of the slots, the brake pedal 7 is limited in rotation, the pin 6 remains inserted into the brake hole 41 of the rear wheel 4, and the first return spring 63 is in a compressed state. After the foot is lifted from the pedal 72 to rotate the rotating drum 71 back, the insert block 73 is inserted into the other slot, and the first return spring 63 causes the pin 6 to return to its original position.

[0032] The pin 6 includes a pushing part 61 and a connecting part 62. A transmission inclined surface 610 is located at one end of the pushing part 61, and the other end of the pushing part 61 is provided with a connecting hole 612 extending along its axial direction. One end of the connecting part 62 is slidably connected in the connecting hole 612. The outer wall of the pushing part 61 and the outer wall of the connecting part 62 form the aforementioned second stepped surface 611. A first limiting pin 621 passes through the connecting part 62, and a first limiting hole 6120 extending along its length direction is provided on the wall of the connecting hole 612. Both ends of the first limiting pin 621 are slidably connected in the first limiting hole 6120. A second return spring 622 is provided between one end of the connecting part 62 and the inner end of the connecting hole 612. When the pin 6 is not aligned with the brake hole 41, the connecting part 62 can slightly retract into the pushing part 61, which plays a buffering role and prevents the pin 6 from breaking due to violent insertion into the rear wheel 4.

[0033] The inner wall of the guide hole 32 is provided with a guide groove 322 extending along its axial direction, and the outer wall of the push part 61 is provided with a guide block 613. The guide block 613 is slidably connected in the guide groove 322, which can guide the pin 6 axially and prevent the pin 6 from rotating circumferentially.

[0034] The middle part of the crossbar 2 bends forward to form a concave shape 20, and the brake pedal 7 is located at the concave shape 20. For example... Figure 7 As shown, the 20 recessed areas provide more storage space for the cloth cover after the vehicle is folded up, resulting in a smaller overall size when the vehicle is folded up.

[0035] The braking mechanism of this baby stroller consists of a brake pedal 7 that is synchronously controlled by two traction ropes 8 to engage with the pins 6 and brake holes 41 in the connecting seats 3 on both sides. This makes it easy to determine which side is malfunctioning after a brake failure, eliminating the need to disassemble the entire braking mechanism on both rear wheels; only the malfunctioning side needs to be disassembled, making brake maintenance more convenient.

Claims

1. A baby stroller brake mechanism, comprising a pair of rear rods (1) and a cross rod (2) connecting the two rear rods (1), the lower end of each of the two rear rods (1) is provided with a connecting seat (3) and a rear wheel (4) rotatably connected to the outer side of the connecting seat (3); characterized in that: an accommodating cavity (30) is arranged in the connecting seat (3), an axially extending convex shaft (31) and a guide hole (32) are arranged in the accommodating cavity (30), a rotating disc (5) is sleeved on the outer periphery of the convex shaft (31), a bolt (6) is slidably connected in the guide hole (32), one end of the bolt (6) abuts against the end face of the rotating disc (5), the end face of the rotating disc (5) is provided with a driving slope (51), and one end of the bolt (6) is provided with a transmission slope (610) matched with the driving slope (51). A brake pedal (7) is rotatably connected to the cross rod (2), a rotation limiting mechanism is arranged between the brake pedal (7) and the cross rod (2), the left and right ends of the brake pedal (7) are respectively provided with a traction rope (8) connected with the rotating disc (5) in the two connecting seats (3), and the end face of the rear wheel (4) near the connecting seat (3) is provided with brake holes (41) uniformly distributed on the same circumference along the axis. When the brake pedal (7) rotates, the rotating disc (5) rotates circumferentially, the bolt (6) axially slides under the cooperation of the transmission slope (610) and the driving slope (51), and the other end of the bolt (6) extends out of the guide hole (32) and is located in the brake hole (41). A reset mechanism is arranged in the guide hole (32) to keep the bolt (6) in a retracting trend. The reset mechanism comprises a first reset spring (63) sleeved on the outer periphery of the bolt (6), a first step surface (321) is arranged on the inner wall of the guide hole (32), a second step surface (611) is arranged on the outer periphery of the bolt (6), and the first reset spring (63) abuts between the first step surface (321) and the second step surface (611).

2. The stroller brake mechanism of claim 1, wherein: The bolt (6) comprises a pushing part (61) and a plug-in part (62), the transmission slope (610) is located at one end of the pushing part (61), the other end of the pushing part (61) is provided with a connecting hole (612) extending along the axial direction thereof, one end of the plug-in part (62) is slidably connected in the connecting hole (612), and the second step surface (611) is formed between the outer wall of the pushing part (61) and the outer wall of the plug-in part (62); a first limiting pin (621) is arranged in the plug-in part (62), a first limiting hole (6120) extending along the length direction of the connecting hole (612) is arranged on the hole wall of the connecting hole (612), and the two ends of the first limiting pin (621) are slidably connected in the first limiting hole (6120); and a second reset spring (622) is arranged between one end of the plug-in part (62) and the inner end of the connecting hole (612).

3. The stroller brake mechanism of claim 2, wherein: A guide groove (322) extending along the axial direction is arranged on the inner wall of the guide hole (32), and a guide block (613) is arranged on the outer wall of the pushing part (61) and slidably connected in the guide groove (322).

4. The stroller brake mechanism of claim 3, wherein: The center of the convex shaft (31) is provided with a shaft hole (310) connected with the rear wheel (4).

5. The stroller brake mechanism of claim 1, wherein: ​ 6. The stroller brake mechanism of claim 1, wherein: The middle part of the crossbar (2) is bent forward to form a concave (20), and the brake pedal (7) is located at the concave (20).

7. The stroller brake mechanism of claim 1, wherein: The brake pedal (7) comprises a rotating barrel (71) and a handle (72) connected to the outer periphery of the rotating barrel (71), the rotating barrel (71) is rotationally connected to the crossbar (2), the crossbar (2) is sleeved with a shaft sleeve (21), and the two ends of the rotating barrel (71) are rotationally connected in the shaft sleeve (21); the rotation limiting mechanism comprises an insertion block (73) and at least two insertion slots (210) arranged in the shaft sleeve (21), the insertion slots (210) extend circumferentially along the shaft sleeve (21), one end of the inner wall of the rotating barrel (71) is provided with a sliding groove (710), the insertion block (73) is slidingly connected in the sliding groove (710), a third return spring (731) is arranged between the inner end of the insertion block (73) and the inner end of the sliding groove (710) to make the insertion block (73) have an outward tendency, a second limiting hole (730) extending along the length direction of the insertion block (73) is arranged in the insertion block (73), and a second limiting pin (7101) protruding in the sliding groove (710) is inserted in the second limiting hole (730).

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