A brake device

Abstract

The application provides a brake device, which comprises a brake seat, a limiting rod, a guide piece, a wheel and a foot switch, and the wheel and the foot switch rotate axially relative to the brake seat. The axial surface of the wheel is provided with a plurality of limiting holes which are uniformly distributed in a ring shape relative to the wheel and a shaft which is coaxially connected to the wheel; the brake seat comprises a rotating hole which is matched with the shaft for rotation and a sliding hole which is used for the sliding of the limiting rod; the rotating direction of the guide piece is perpendicular to the direction of the shaft and the guide piece is rotatably installed on the brake seat; the guide piece is slidably installed on the sliding hole, one end of the guide piece is abuttingly matched with the guide piece, and the other end of the guide piece is connected with the limiting hole through sliding. The inclined surface abutting structure for driving the guide piece to rotate is arranged between the foot switch and the guide piece. The brake device has the advantages of labor-saving and long service life.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of stroller, in particular to a brake device. BACKGROUND

[0002] The stroller is widely used, and is particularly applied to the fields of camp, children and shopping. In order to prevent the stroller from moving, a brake structure is generally provided. The traditional brake structure comprises a limiting rod, a guide piece and a foot pedal. The guide piece structure is very complex, and the limiting rod is moved by axial movement, which has large friction and is easy to wear. In addition, the pedal is laborious. SUMMARY

[0003] [1] Technical problem to be solved

[0004] The technical problem to be solved by the present application is to solve the problem of laborious pedal of the traditional brake structure.

[0005] [2] Technical solution to solve the problem

[0006] SUMMARY: A brake device comprises a brake seat, a limiting rod, a guide piece, a wheel and a foot pedal switch which are axially rotatable relative to the brake seat. The axial surface of the wheel is provided with a plurality of limiting holes which are uniformly distributed in a ring shape and a shaft which is coaxially connected with the wheel; the brake seat comprises a rotating hole which is matched with the shaft for rotation and a sliding hole which is used for sliding of the limiting rod, the rotating shaft of the guide piece is perpendicular to the shaft and is rotatably installed on the brake seat, the limiting rod is slidably installed on the sliding hole, one end of the limiting rod is abuttingly matched with the guide piece, and the other end of the limiting rod is connected with the limiting hole through sliding; the foot pedal switch and the guide piece are provided with an inclined surface abutting structure which is used for driving the guide piece to rotate.

[0007] In the above brake device, the inclined surface abutting structure comprises a driving block which is located on the foot pedal switch and a guide groove which is located on the side surface of the guide piece, the inner side surface of the guide groove is an inclined surface, and the driving block is abuttingly matched with the inner side surface.

[0008] In the above brake device, the foot pedal switch further comprises a positioning groove which is used for positioning the driving block, the positioning groove is communicated with the guide groove, and a protrusion is arranged between the inner side surface of the guide groove and the inner side surface of the positioning groove.

[0009] In the above brake device, a reset piece is further included, and the reset piece is used for controlling the limiting rod to move towards the guide piece.

[0010] In the above brake device, the structure of the reset piece is a spring, the spring is sleeved on the limiting rod, one end of the spring is in contact with the brake seat, and the other end of the spring is in contact with the annular step outside the limiting rod.

[0011] The guiding piece is provided with an abutting part abutting against the limiting rod at one end of the limiting rod, and the abutting part is in the shape of a spherical ball.

[0012] The brake device is characterized in that a rotating sleeve is sleeved at one end of the axle, and the rotating sleeve comprises a rotating groove on the outside.

[0013] The brake device is characterized in that the rotating sleeve comprises two spacers sleeved on the axle, and the rotating groove is formed between the two spacers.

[0014] The brake device is characterized in that one side of the brake seat comprises an outer circular surface and an inner circular surface, and the inner cavity for placing the guiding piece is formed between the outer circular surface and the inner circular surface.

[0015] The brake device is characterized in that the guiding piece is in the shape of a semi-circular ring, and the two ends of the guiding piece are provided with rotating shafts on the inner and outer sides, respectively, which are in rotating cooperation with the outer circular surface and the inner circular surface of the brake seat.

[0016] 【3】Beneficial effects

[0017] The brake device is characterized in that the rotating direction of the guiding piece is perpendicular to the direction of the axle, the contact structure with the limiting rod is simple, the driving force is small, the pedal is very labor-saving, the brake device is not easy to wear and tear, and the service life is long. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a perspective view of the brake device of the present application;

[0019] Figure 2 It is an exploded view of Figure 1

[0020] Figure 3 It is a sectional view of the brake device of the present application;

[0021] Figure 4 It is an enlarged view of A-A in Figure 3

[0022] Figure 5 It is a perspective view of the pedal switch and the guiding piece in the connected state;

[0023] Figure 6 It is a perspective view of the pedal switch;

[0024] Figure 7 It is a perspective view of the guiding piece;

[0025] ​​The figure 1 is a wheel, 2 is a brake seat, 3 is a limiting rod, 4 is a guide, 5 is a foot switch, 6 is an axle, 7 is a rotating hole, 8 is a sliding hole, 9 is a limiting hole, 10 is a driving block, 11 is a guide groove, 12 is an inner side surface, 13 is an abutting part, 14 is a reset part, 15 is a rotating groove, 16 is a gasket, 17 is a rotating shaft, 18 is an outer circular surface, 19 is an inner circular surface, 20 is a positioning groove, and 21 is a protrusion. DETAILED DESCRIPTION

[0026] The embodiments of the present application will be described in detail below with reference to the drawings.

[0027] Reference Figures 1-7 A brake device can be applied to a camping cart, a child cart and a shopping cart, which comprises a brake seat 2, a limiting rod 3, a guide 4 and a wheel 1 and a foot switch 5 which are axially rotatable relative to the brake seat 2. The wheel 1 and the foot switch 5 are respectively installed on opposite sides of the brake seat 2. The axial surface of the wheel 1 is provided with a plurality of limiting holes 9 which are uniformly distributed relative to the annular surface and an axle 6 which is coaxially connected to the wheel 1. One end of the axle 6 and the limiting rod 3 are respectively inserted into a rotating hole 7 and a sliding hole 8 of the brake seat 2, and a bearing is arranged between the axle 6 and the rotating hole 7. One side of the brake seat 2 comprises an outer circular surface 18 and an inner circular surface 19, and an inner cavity for placing the guide 4 is formed between the outer circular surface and the inner circular surface. The guide 4 is a semicircular ring part, and rotating shafts 17 are arranged on the inner and outer sides of both ends of the guide 4. The rotating shafts 17 are respectively rotatably connected to the outer circular surface and the inner circular surface of the brake seat 2, so that the rotating direction of the guide 4 is perpendicular to the direction of the axle. The limiting rod 3 is slidably installed on the sliding hole 8, one end of the limiting rod 3 is abuttingly connected to the guide 4, and the other end of the limiting rod 3 is connected to the limiting hole 9 through sliding. A slope abutting structure for driving the guide 4 to rotate is arranged between the foot switch 5 and the guide 4. The slope abutting structure comprises a driving block 10 on the foot switch 5 and a guide groove 11 on the side surface of the guide 4. The inner side surface 12 of the guide groove 11 has different depths, forming a slope or an arc surface. The driving block 10 is abuttingly connected to the inner side surface 12.

[0028] When the foot switch 5 is pressed to drive the block 10 to rotate relative to the axle 6, the rotation position of the guide 4 can be changed due to the movement of the inclined surface of the inner side 12, specifically from deep to shallow, and then the moving position of the limiting rod 3 is controlled to enter the limiting hole 9 to limit the rotation of the wheel, so as to complete the braking. In order to maintain this state, the foot switch 5 further comprises a positioning groove 20 for positioning the driving block 10, the positioning groove 20 is communicated with the guide groove 11, and the inner side 12 of the guide groove 11 and the inner side 12 of the positioning groove 20 are provided with a protrusion 21. When the driving block 10 continues to move at the shallowest position (i.e. on the protrusion 21), it will fall into the positioning groove 20, so as to limit the movement of the driving block 10, thereby locking and maintaining the braking state of the wheel 1, which is very convenient and labor-saving to operate.

[0029] In order to reset the limiting rod 3, the application further comprises a reset member 14 for controlling the movement of the limiting rod 3 towards the guide. The structure of the reset member is a spring, which is sleeved on the limiting rod 3, one end of the spring is in contact with the brake seat 2, and the other end is in contact with the annular step outside the limiting rod 3, so that the limiting rod 3 always moves towards the guide, which is convenient for automatic resetting of the limiting rod 3 and automatic unlocking of the wheel 1. When unlocking, the foot switch 5 is only lifted slightly to make the driving block 10 move out of the positioning groove 20 and into the guide groove 11, and then the spring is automatically reset by the pressure of the spring, which is very labor-saving to operate.

[0030] As shown in Figure 3 The end of the guide 4 towards the limiting rod 3 is provided with an abutting part 13 abutting against the limiting rod 3, the shape of the abutting part 13 is a spherical ball, the resistance and friction are small, and the operation is convenient.

[0031] As shown in Figure 4 One end of the axle 6 is fixedly sleeved with a rotating sleeve, the outside of the rotating sleeve contains a rotating groove 15, and the foot switch 5 is rotatably installed on the rotating groove 15. The rotating sleeve 14 contains two gaskets 16 sleeved on the axle, and the rotating groove 15 is formed between the two gaskets 16.

[0032] The above is only the preferred embodiment of the application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the technical principles of the application, and these improvements and refinements should also be regarded as the protection scope of the application.

Claims

1. A braking device, characterized in that, The system includes a brake seat (2), a limiting rod (3), a guide member (4), and a wheel (1) and a foot switch (5) that rotate axially relative to the brake seat (2). The axial surface of the wheel (1) is provided with multiple limiting holes (9) evenly distributed around it in an annular shape and an axle (6) coaxially connected to it. The brake seat (2) includes a rotating hole (7) that rotates with the axle (6) and a sliding hole (8) for sliding the limiting rod (3). The guide member is rotatably mounted on the brake seat (2) with its rotation direction perpendicular to the axle direction. The limiting rod (3) is slidably mounted on the sliding hole (8), with one end abutting against the guide member (4) and the other end engaging with the limiting hole (9) by sliding. The foot switch (5) and the guide member (4) An inclined abutment structure for driving the guide member (4) to rotate is provided between the two sides; the inclined abutment structure includes a drive block (10) located on the foot switch (5) and a guide groove (11) located on the side of the guide member (4), the inner side (12) of the guide groove (11) is an inclined surface, and the drive block (10) abuts against the inner side (12); one side of the brake seat (2) includes an outer circular surface (18) and an inner circular surface (19), and an inner cavity for placing the guide member (4) is formed between the outer circular surface and the inner circular surface; the guide member (4) is in the shape of a semi-circular ring, and a rotating shaft (17) is provided on both the inner and outer sides of the two ends of the guide member (4), and the rotating shaft (17) is rotatably engaged with the outer circular surface and the inner circular surface of the brake seat (2) respectively.

2. The braking device according to claim 1, characterized in that, The guide (4) also includes a positioning groove (20) for positioning the drive block (10), the positioning groove (20) is connected to the guide groove (11); a protrusion (21) is provided between the inner side (12) of the guide groove (11) and the inner side (12) of the positioning groove (20).

3. The braking device according to claim 1, characterized in that, It also includes a reset element (14) for controlling the movement of the limit rod (3) toward the guide element.

4. The braking device according to claim 3, characterized in that, The reset component is a spring, which is sleeved on the limiting rod (3). One end of the spring contacts the brake seat (2), and the other end contacts the annular step outside the limiting rod (3).

5. The braking device according to claim 1, characterized in that, The guide member (4) is provided with a stop part (13) at one end facing the limit rod (3), which abuts against the limit rod (3). The stop part (13) is spherical.

6. The braking device according to claim 1, characterized in that, One end of the axle (6) is fixedly fitted with a rotating sleeve, and the outside of the rotating sleeve includes a rotating groove (15). The foot switch (5) is rotatably mounted on the rotating groove (15).

7. The braking device according to claim 6, characterized in that, The rotating sleeve includes two gaskets (16) that are sleeved on the axle, and a rotating groove (15) is formed between the two connected gaskets (16).

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