Baby carriage brake structure

Abstract

The utility model discloses a baby carriage brake structure which comprises a transverse pipe connected between a left wheel set and a right wheel set, a pair of transverse rods capable of transversely moving in the transverse pipe are arranged in the transverse pipe, and a pedal and a transmission sleeve capable of being driven by the pedal to rotate are arranged on the transverse pipe. Transmission pins are arranged between the transmission sleeves and the transverse pipes and between the transmission sleeves and the transverse rods, the transmission sleeves rotate to drive the pair of transverse rods to slide towards the outer side, the left wheel set and the right wheel set are each provided with a sliding assembly capable of pushing the transverse rods to move downwards when the transverse rods slide towards the outer side and a reset piece driving the sliding assembly to reset, and each sliding assembly comprises a locking piece capable of sliding up and down. The left wheel set and the right wheel set further comprise tires, and a plurality of locking grooves allowing the locking pieces to be clamped therein are formed in one sides of the tires. The device is simple in structure, compact in matching, convenient to assemble, reasonable in design, short in manufacturing time, low in cost and suitable for various baby carriages.

Description

[Technical Field]

[0001] This utility model relates to a brake structure for a baby stroller. [Background Technology]

[0002] Most existing strollers have a braking mechanism. When the stroller stops, simply pressing the brake pedal locks the wheels, preventing the stroller from moving, avoiding accidents, and improving safety. However, existing stroller braking mechanisms generally come in two types: one locks a single wheel, requiring two separate brakes to brake the two rear wheels; the other locks both wheels simultaneously. This type of braking structure is complex, costly, inconvenient to assemble, and time-consuming to manufacture.

[0003] In addition, existing strollers have omnidirectional front wheels but the rear wheels cannot rotate in all directions. This makes them inconvenient and inflexible in certain operations, such as when moving laterally. Some strollers with omnidirectional front and rear wheels lack a directional mechanism for the rear wheels, which can easily rotate when moving forward normally, affecting the stroller's movement. Therefore, these strollers all have the problem of being inconvenient to use. [Summary of the Invention]

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a stroller brake structure that is simple in structure, compact in fit, easy to assemble, reasonably designed, short in manufacturing time, low in cost, and applicable to various types of strollers.

[0005] The purpose of this utility model is achieved as follows:

[0006] A stroller brake structure includes a horizontal tube connecting a left wheel assembly and a right wheel assembly. The horizontal tube contains a pair of horizontally movable crossbars. A pedal and a transmission sleeve that can rotate via the pedal are mounted on the horizontal tube. A transmission pin is provided between the transmission sleeve, the horizontal tube, and the crossbars. Rotation of the transmission sleeve causes the pair of crossbars to slide outwards. Both the left and right wheel assemblies have sliding components that push the crossbars downwards when they slide outwards, and reset components that reset the sliding components. The sliding components include locking components that can slide up and down. Both the left and right wheel assemblies also include tires. Each tire has multiple locking grooves on one side for the locking components to engage.

[0007] The stroller brake structure described above is characterized in that the outer sides of the pair of crossbars are provided with a pushing slope that allows the locking member to move downwards.

[0008] The stroller brake structure described above is characterized in that the pedal includes a tubular part fitted onto a transmission sleeve, the inner wall of the tubular part is provided with a protrusion, the outer wall of the transmission sleeve is provided with a groove that mates with the protrusion, the transmission sleeve is also provided with at least one pair of guide grooves, the pair of transmission pins are inserted into the pair of guide grooves, the horizontal tube is provided with a pair of horizontal grooves for the pair of transmission pins to be inserted, and the pair of horizontal bars are each provided with a horizontal bar hole for the transmission pins to be inserted.

[0009] The stroller brake structure described above is characterized in that the guide groove includes a pair of first figure-eight shaped grooves provided on one side of the transmission sleeve, and a pair of second figure-eight shaped grooves provided on the symmetrical position of the transmission sleeve in mirror orientation to the first figure-eight shaped grooves.

[0010] The stroller brake structure described above is characterized in that both the left wheel assembly and the right wheel assembly further include an H-shaped frame, the H-shaped frame is provided with a pivot seat, the sliding assembly further includes a sliding rod provided on the pivot seat, the lower part of the sliding rod is provided with a connecting block, the connecting block is provided with a connecting block transverse groove, a T-shaped transmission block is inserted into the connecting block transverse groove, and a locking member is provided in the H-shaped frame, the upper end of which abuts against the T-shaped transmission block.

[0011] The stroller brake structure described above is characterized in that a hollow shaft is provided on the pivot seat, a sliding rod is inserted into the hollow shaft, a connecting seat is provided on the pivot seat, the connecting seat is inserted into the hollow shaft, the connecting seat is provided with a transverse connecting part, and the two ends of the transverse tube are connected to the transverse connecting part.

[0012] The stroller brake structure described above is characterized in that a locking pin that can rotate with the connecting seat is provided between the hollow shaft and the connecting seat, the side wall of the locking pin is provided with a positioning groove, a positioning locking block that can slide in the positioning groove is provided, and the pivot seat is provided with a positioning locking groove for the positioning locking block to be inserted.

[0013] The stroller brake structure described above is characterized in that the locking pin is provided with a locking pin slot, and a retaining spring is provided in the locking pin slot.

[0014] The stroller braking structure described above is characterized in that the stroller includes a push rod assembly, the push rod assembly is provided with a button, and the button is connected to a rope that can drive a positioning lock block.

[0015] The beneficial effects of this utility model are:

[0016] This invention relates to a braking mechanism where, when the brake pedal is depressed, the pedal rotates the transmission sleeve, which in turn moves the pair of transmission pins laterally outward. This movement, in turn, causes the pair of crossbars to move laterally outward, pushing the locking member of the sliding assembly downward. The locking member then engages with the locking groove of the tire, thus achieving braking. This invention features a simple structure, compact fit, convenient assembly, reasonable design, short manufacturing time, low cost, and applicability to various types of strollers.

[0017] This invention features a locking pin that rotates with the connecting seat between the hollow shaft and the connecting seat. The locking pin has a positioning groove on its side wall, within which a positioning locking block and a positioning locking block spring slide. The pivot seat has a positioning locking groove for the positioning locking block to insert into. The stroller has a rope that can move the positioning locking block. Pulling the rope disengages the positioning locking block from the positioning locking groove, allowing the pivot seat to rotate freely, thus enabling the tire to rotate freely and form a swivel wheel. When the rope is released, the positioning locking block returns to its original position under the action of the positioning locking block spring, inserting into the positioning locking groove. The pivot seat is then locked, and the tire is locked in one position, allowing the tire to be easily switched between a swivel wheel and a fixed wheel. [Attached Image Description]

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is a structural diagram of the present invention;

[0020] Figure 3 This is an exploded view of the structure of this utility model;

[0021] Figure 4 This is an exploded view of the structure of this utility model;

[0022] Figure 5 This is a perspective view of the transmission sleeve of this utility model;

[0023] Figure 6 This is a perspective view of the transmission sleeve of this utility model;

[0024] Figure 7 This is a structural diagram of the right wheel assembly of this utility model;

[0025] Figure 8 This is an exploded view of the right wheel assembly of this utility model;

[0026] Figure 9 This is a structural diagram of the pivot seat of this utility model;

[0027] Figure 10 This is a structural diagram of the revolver assembly of this utility model;

[0028] Figure 11 This is an exploded view of the revolver assembly of this utility model;

[0029] Figure 12 This is a structural diagram of the present invention when it is fitted onto a stroller.

Detailed Implementation Methods

[0030] The present invention will be further described below with reference to the accompanying drawings:

[0031] A stroller brake structure includes a horizontal tube 3 connecting a left wheel assembly 1 and a right wheel assembly 2. A pair of horizontal bars 4, movable laterally within the horizontal tube 3, are provided on the horizontal tube 3. A pedal 5 and a transmission sleeve 6, which can be rotated by the pedal 5, are provided on the horizontal tube 3. A transmission pin 7 is provided between the transmission sleeve 6, the horizontal tube 3, and the horizontal bars 4. Rotation of the transmission sleeve 6 can cause the pair of horizontal bars 4 to slide outwards. Both the left wheel assembly 1 and the right wheel assembly 2 are provided with a sliding component 81 that pushes the horizontal bars downwards when they slide outwards, and a reset component 82 that resets the sliding component. The sliding component 81 includes a locking component 83 that can slide up and down. Both the left wheel assembly 1 and the right wheel assembly 2 also include tires 11. Each tire 11 has multiple locking grooves 84 on one side into which the locking component 83 can engage. When braking, the pedal 5 is pressed, which causes the transmission sleeve 6 to rotate. The transmission sleeve 6 causes the pair of transmission pins 7 to move laterally outward, thereby causing the pair of crossbars 4 to move laterally outward. The crossbars 4 push the locking member 83 of the sliding assembly 81 downward, and the locking member 83 engages in the locking groove 84 of the tire 11 to achieve braking.

[0032] The outer sides of the pair of crossbars 4 of this utility model are provided with a pushing inclined surface 40 that can push the locking member 83 downward. When the pair of crossbars 4 moves laterally outward, the pushing inclined surface 40 can push the locking member 83 downward.

[0033] The pedal 5 of this utility model includes a tubular portion 51 fitted onto a transmission sleeve. The inner wall of the tubular portion 51 is provided with a protrusion 52. The transmission sleeve 6 is fitted onto a horizontal tube 3. The outer wall of the transmission sleeve 6 is provided with a groove 61 that mates with the protrusion 52. The protrusion 52 and the groove 61 are preferably a pair and symmetrically arranged. The transmission sleeve 6 is also provided with at least a pair of guide grooves 26 into which a pair of transmission pins 7 are inserted. The horizontal tube 3 is provided with a pair of horizontal grooves 31 for inserting the pair of transmission pins. Each of the pair of horizontal bars 4 is provided with a horizontal bar hole 41 for inserting the transmission pins.

[0034] The guide groove 26 of this utility model can be a pair of figure-eight shaped grooves.

[0035] The guide groove 26 of this utility model may also include a pair of first figure-eight grooves 261 provided on one side of the transmission sleeve, and a pair of second figure-eight grooves 262 provided at symmetrical positions of the transmission sleeve and mirror-oriented with the first figure-eight grooves.

[0036] Both the left wheel assembly 1 and the right wheel assembly 2 of this utility model further include an H-shaped frame 12, which is a hollow tube. The reset component 82 is a spring, which is located inside the H-shaped frame 12. A pivot seat 13 is provided on the H-shaped frame 12. The sliding assembly 81 also includes a sliding rod 85 located on the pivot seat 13. A connecting block 86 is provided at the lower part of the sliding rod 85. A connecting block transverse groove 861 is provided on the connecting block 86. A 7-shaped transmission block 87 is inserted into the connecting block transverse groove 861. A locking component 83 is located inside the H-shaped frame, and its upper end abuts against the 7-shaped transmission block 87. The upper end of the 7-shaped transmission block 87 extends into the pivot seat 13 and connects with the connecting block. The lower end of the 7-shaped transmission block extends into the H-shaped frame and abuts against the locking component 83.

[0037] The pivot seat 13 of this utility model is provided with a connecting block groove 130 for the connecting block 86 to slide within it.

[0038] The locking component 83 includes a locking vertical rod 831, the upper part of which can abut against the 7-shaped transmission block 87, and the lower part of the locking vertical rod 831 is provided with a locking horizontal block 832 that can be inserted into the locking groove 84. The locking vertical rod 831 and the locking horizontal block 832 are integral structures. The locking vertical rod 831 is provided with a spring groove 8311 for spring assembly. The H-shaped frame 12 is provided with an H-shaped frame sliding groove 120 for the locking component 83 to slide within. The H-shaped frame sliding groove 120 is provided with a stop block 1201 that abuts against the spring.

[0039] The pivot seat 13 of this utility model is provided with a hollow shaft 14, and a sliding rod 85 is inserted into the hollow shaft 14. The pivot seat 13 is provided with a connecting seat 15, which is inserted into the hollow shaft 14. The connecting seat 15 is provided with a connecting seat transverse connecting part 16, and both ends of the horizontal tube 3 are connected to the connecting seat transverse connecting part 16.

[0040] The lower part of the H-shaped frame 12 of this utility model is connected to the tire 11 via a wheel axle, and the upper part of the H-shaped frame 12 is provided with a fixed seat 121, and the pivot seat 13 is fixed on the fixed seat 121.

[0041] In this invention, a locking pin 17, which can rotate with the connecting seat, is provided between the hollow shaft 14 and the connecting seat 15. The side wall of the locking pin 17 is provided with a positioning groove 171, and a positioning locking block 18 and a positioning locking block spring 181, which can slide within the positioning groove 171, are provided. The pivot seat 13 is provided with a positioning locking groove 131 for the positioning locking block 18 to be inserted.

[0042] The locking pin 17 of this utility model is provided with a locking pin slot 172, and a retaining spring 173 is provided in the locking pin slot 172. The connecting seat 15 is provided with a connecting seat hole for the locking pin 17 to be inserted. The inner wall of the connecting seat hole is provided with a protruding edge. The locking pin 17 is provided with a notch that cooperates with the protruding edge. When the locking pin 17 is inserted into the connecting seat hole, the protruding edge and the notch form a lock.

[0043] like Figure 12 As shown, when this utility model is assembled on a stroller, the stroller includes a push rod assembly 100, a backrest assembly 101, an armrest assembly 102, and a front wheel assembly 103. The push rod assembly 100 is equipped with a button 104, which is connected to a rope (not shown) that can drive the positioning lock block 18. Pressing the button can pull the rope, thereby driving the positioning lock block 18 out of the positioning lock groove 131. At this time, the pivot seat 13 can rotate freely, allowing the tire 11 to rotate freely as well. When the rope is released, the positioning lock block 18 is reset under the action of the positioning lock block spring 181, and the positioning lock block 18 is inserted into the positioning lock groove 131. The pivot seat 13 is locked, and the tire 11 is locked in one position, allowing the tire to be switched between a swivel wheel and a fixed wheel, which is very convenient.

Claims

1. A stroller brake structure comprising a cross tube (3) connecting a left wheel assembly (1) and a right wheel assembly (2), characterized in that... A pair of horizontal bars (4) that can move laterally inside the horizontal tube (3) are provided. A pedal (5) and a transmission sleeve (6) that can be driven to rotate by the pedal (5) are provided on the horizontal tube (3). A transmission pin (7) is provided between the transmission sleeve (6), the horizontal tube (3), and the horizontal bars (4). The rotation of the transmission sleeve (6) can drive the pair of horizontal bars (4) to slide outward. The left wheel assembly (1) and the right wheel assembly (2) are each provided with a sliding component (81) that can push the horizontal bar to move downward when it slides outward, and a reset component (82) that can drive the sliding component to reset. The sliding component (81) includes a locking component (83) that can slide up and down. The left wheel assembly (1) and the right wheel assembly (2) also include tires (11). Each side of the pair of tires (11) is provided with multiple locking grooves (84) into which the locking component (83) can be inserted.

2. The stroller brake structure according to claim 1, characterized in that... The outer sides of each pair of crossbars (4) are provided with a push-up ramp (40) that can be pushed and locked (83) downward.

3. The stroller brake structure according to claim 1, characterized in that... The pedal (5) includes a tubular part (51) fitted onto the transmission sleeve. The inner wall of the tubular part (51) is provided with a protrusion (52). The outer wall of the transmission sleeve (6) is provided with a groove (61) that cooperates with the protrusion. The transmission sleeve (6) is also provided with at least one pair of guide grooves (26). The pair of transmission pins (7) are inserted into the pair of guide grooves (26). The horizontal tube (3) is provided with a pair of horizontal grooves (31) for the pair of transmission pins to be inserted. The pair of horizontal bars (4) are each provided with a horizontal bar hole (41) for the transmission pins to be inserted.

4. A stroller brake structure according to claim 1, characterized in that... The guide groove (26) includes a pair of first figure-eight grooves (261) provided on one side of the transmission sleeve, and a pair of second figure-eight grooves (262) provided on the symmetrical position of the transmission sleeve in mirror orientation to the first figure-eight grooves.

5. A stroller brake structure according to claim 1, characterized in that... Both the left wheel assembly (1) and the right wheel assembly (2) also include an H-shaped frame (12), on which a pivot seat (13) is provided. The sliding assembly (81) also includes a sliding rod (85) provided on the pivot seat (13). A connecting block (86) is provided at the lower part of the sliding rod (85). A connecting block transverse groove (861) is provided on the connecting block (86). A 7-shaped transmission block (87) is inserted into the connecting block transverse groove (861). A locking member (83) is provided inside the H-shaped frame, and its upper end abuts against the 7-shaped transmission block (87).

6. A stroller brake structure according to claim 5, characterized in that... A hollow shaft (14) is provided on the pivot seat (13), and a sliding rod (85) is inserted into the hollow shaft (14). A connecting seat (15) is provided on the pivot seat (13), and the connecting seat (15) is inserted into the hollow shaft (14). The connecting seat (15) is provided with a transverse connecting part (16), and both ends of the horizontal tube (3) are connected to the transverse connecting part (16).

7. A stroller brake structure according to claim 6, characterized in that... A locking pin (17) that can rotate with the connecting seat is provided between the hollow shaft (14) and the connecting seat (15). The side wall of the locking pin (17) is provided with a positioning groove (171). A positioning lock block (18) that can slide inside the positioning groove (171) is provided. The pivot seat (13) is provided with a positioning lock groove (131) for the positioning lock block (18) to be inserted.

8. A stroller brake structure according to claim 6, characterized in that... The locking post (17) is provided with a locking post slot (172), and a retaining spring (173) is provided in the locking post slot (172).

9. A stroller brake structure according to claim 1, characterized in that... The stroller includes a push rod assembly (100) with a button (104) connected to a rope that can drive a positioning lock block (18).

Images