Brake rod transmission structure of automobile hand brake

Abstract

The utility model relates to the technical field of motor vehicle hand brakes, in particular to an automobile hand brake rod transmission structure which comprises a mounting seat provided with a ratchet wheel, a hand brake rod and a clamping plate rotatably embedded in the hand brake rod, a brake rope is wound on the ratchet wheel, one end of the clamping plate is provided with clamping teeth, the other end of the clamping plate is hinged to a transmission rod, and a limiting plate is embedded in one end of the hand brake rod. The transmission rod slidably penetrates through a limiting plate and is rotationally connected with a limiting ball, a tension spring is connected to the limiting plate, a plurality of adjusting blocks are slidably arranged on the limiting plate at intervals in the circumferential direction, the sides, close to each other, of the adjusting blocks are of slope structures and abut against the limiting ball, and pressure springs are connected between the sides, away from the slopes, of the adjusting blocks and the inner wall of the hand brake rod. The side, away from the limiting plate, of the limiting ball abuts against a jacking column which is integrally connected with a button with one end penetrating out of the hand brake rod in a sliding mode. The transmission structure of the hand brake rod is simplified while it is guaranteed that the hand brake rod button is pressed in a sufficient labor-saving mode, and therefore the manufacturing and installing cost is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of motor vehicle hand brake technology, in particular to a kind of automobile hand brake lever transmission structure. BACKGROUND

[0002] Motor vehicle hand brake lever, also known as parking brake operating lever or hand brake lever, is a safety device on the car, mainly used to prevent vehicle sliding or rolling when parking. Its main function is to ensure that the vehicle does not move automatically in unattended condition by braking the rear wheels of the vehicle. With the advancement of technology, the hand brake of the vehicle now generally adopts an electric hand brake structure. Some agricultural motor vehicles and industrial motor vehicles still use traditional hand brake structure with high reliability, low maintenance cost and simple structure due to different positioning and safety requirements in the manufacturing process.

[0003] For example, the utility model patent with patent number CN215154541U is named as a kind of automobile hand brake, and its technical solution points include mounting seat, hand brake lever is rotatably connected on mounting seat, protective sleeve is installed on the outer side of hand brake lever and is connected with brake cable, mounting seat is provided with fan-shaped ratchet, mounting cavity is arranged in hand brake lever, clamping plate is arranged in mounting cavity and is rotatably connected with hand brake lever, clamping plate is provided with clamping tooth matched with ratchet at lower end, limiting plate is arranged in hand brake lever, spring is arranged at the side of limiting plate away from clamping plate, one end of spring away from limiting plate is connected with transmission block, transmission rod is fixedly arranged in transmission block, the other end of transmission rod passes through limiting plate and is connected with the upper end of clamping plate, extrusion plate is arranged at the side of transmission block away from transmission rod and is slidably connected with hand brake lever, extrusion plate is connected with extrusion driving mechanism, button is arranged at the end of hand brake lever away from clamping plate, pressure sensor is arranged at the end of button away from adjusting motor.

[0004] Although this patent can reduce the problem of excessive pressing force required by the button when adjusting the hand brake, there is no connecting structure between the button and the transmission rod. The action of the clamping plate and the transmission rod is actually completed by the pressure sensor on the button and the adjusting motor system, and the pressing action has no effect. This will result in the need for complete accuracy in signal transmission between the pressure sensor and the adjusting motor, making installation and debugging difficult and subsequent maintenance difficult. At the same time, the structure connected with the pressure sensor and the adjusting motor has hysteresis when it moves, so when the driver presses and releases the button, the action of the clamping plate is not consistent with the action of the button, which can cause the driver to feel uncomfortable. Utility model content

[0005] In order to improve the structure in the above technical solution, simplify the structure inside the hand brake lever while ensuring labor-saving when pressing the hand brake, and enable the hand brake lever button to give full feedback to the driver when pressing, the present application provides a kind of automobile hand brake lever transmission structure.

[0006] The automobile hand brake lever transmission structure provided by the application adopts the technical scheme as follows:

[0007] The automobile hand brake lever transmission structure comprises a mounting seat provided with a ratchet wheel, a hand brake lever rotationally connected to the mounting seat at one end, and a clamping plate rotationally embedded in the hand brake lever, a brake rope is wound on the ratchet wheel, the clamping plate is provided with a clamping tooth at one end, a transmission lever is hingedly connected to the other end of the clamping plate, a limiting plate is embedded in the end of the hand brake lever away from the mounting seat, the transmission lever is slidably arranged through the limiting plate, and a limiting ball is rotationally connected to one end of the limiting plate passing through the limiting plate, a tension spring is connected between the limiting plate and the transmission lever at a position along the axis and determined position on the side of the limiting plate close to the clamping plate, a plurality of adjusting blocks are slidably arranged on the limiting plate at intervals in the circumferential direction, the side of each of the adjusting blocks close to each other is a slope structure and abuts against the limiting ball, a compression spring is connected between the side of each of the adjusting blocks away from the slope and the inner wall of the hand brake lever, a jacking post abuts against the side of the limiting ball away from the limiting plate, and the jacking post is integrally connected with a button slidably arranged out of the hand brake lever at one end.

[0008] Optionally, a plurality of sliding grooves corresponding to the adjusting blocks are arranged at intervals in the circumferential direction on the side of the limiting plate close to the adjusting blocks, the cross sections of the sliding grooves are T-shaped, and the sliding grooves are in communication with the circumferential edge of the limiting plate and the side of the limiting plate close to the adjusting blocks, and each of the adjusting blocks is integrally connected with a sliding block close to the limiting plate, and the sliding block is slidably arranged in the sliding groove.

[0009] Optionally, a flat area corresponding to the slope structure is arranged on the side of each of the adjusting blocks away from the limiting plate, and a buckling plate abuts against the flat areas on the adjusting blocks, the buckling plate is fixedly connected in the hand brake lever, and the jacking post is slidably arranged through the buckling plate.

[0010] Optionally, a plurality of micro air cylinders corresponding to the adjusting blocks are embedded in the hand brake lever at intervals in the circumferential direction, the micro air cylinders are electrically connected with a vehicle power supply, and the extension rods of each of the micro air cylinders abut against the corresponding adjusting block when the vehicle is powered off.

[0011] Optionally, the slope structure on the adjusting block is an arc structure, and the adjusting blocks and the limiting ball are in surface contact.

[0012] In summary, the application has at least one of the following beneficial technical effects:

[0013] 1. The application can give the driver a pressing feedback when the driver presses the button on the hand brake lever, so that the driver can judge whether the hand brake can be rotated at this time through force perception, the structure is simple and easy to maintain, and has high practicability.

[0014] 2. The button of the application has consistency with the action of the transmission rod, and the button can quickly rebound when it is released, so as to facilitate the driver to perceive the locking state of the hand brake lever;

[0015] 3. The hand brake lever transmission structure of the application has an automatic locking function after the vehicle stops, which can avoid the error operation of the driver releasing the hand brake before starting the vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the overall structure diagram of the automobile hand brake lever transmission structure of the application.

[0017] Figure 2 is the internal structure sectional view of the automobile hand brake lever transmission structure of the application.

[0018] Figure 3 is Figure 2 the enlarged view of A in FIG.

[0019] Mark explanation: 1, mounting seat; 11, ratchet; 12, brake rope; 2, hand brake lever; 21, clamping plate; 211, clamping tooth; 3, transmission rod; 31, tension spring; 4, limiting plate; 41, sliding groove; 5, limiting ball; 6, adjusting block; 61, compression spring; 62, sliding block; 63, flat area; 7, button; 71, top column; 8, buckle plate; 9, micro air cylinder. DETAILED DESCRIPTION

[0020] The following will be combined with the Figures 1-3 The application will be further described in detail.

[0021] The embodiment of the application discloses an automobile hand brake lever transmission structure.

[0022] Referring to Figure 1 and Figure 2 , an automobile hand brake lever transmission structure, which comprises a mounting seat 1 provided with a ratchet 11, a hand brake lever 2 rotatably connected to one end of the mounting seat 1, and a clamping plate 21 rotatably embedded in the hand brake lever 2. The ratchet 11 is wound with a brake rope 12, and when the ratchet 11 is rotated, the brake rope 12 will pull the brake pad to achieve the brake effect. The clamping plate 21 functions to stop the ratchet 11, so that the ratchet 11 can be fixed at a certain rotating position. Specifically, the middle part of the clamping plate 21 is rotatably connected to the inner wall of the hand brake lever 2, one end of which is integrally provided with a clamping tooth 211, and the other end is hinged with a transmission rod 3 for driving the clamping plate 21 to rotate. The hand brake lever 2 is hollow, and the transmission rod 3 extends through the hand brake lever 2 to the other end of the hand brake lever 2.

[0023] Further, the other end of the hand brake lever 2 away from the mounting base 1 is embedded with a limiting plate 4, the transmission rod 3 is movably penetrated through the limiting plate 4, and the end of the transmission rod 3 on the side of the limiting plate 4 away from the mounting base 1 is connected with a limiting ball 5, and it should be noted that the diameter of the limiting ball 5 is greater than the diameter of the transmission rod 3, so as to avoid installation difficulty. The side of the limiting plate 4 away from the mounting base 1 is also radially slidably provided with a plurality of adjusting blocks 6, the plurality of adjusting blocks 6 are distributed along the circumference of the limiting plate 4, and the plurality of adjusting blocks 6 and the inner side wall of the hand brake lever 2 are both connected with compression springs 61.

[0024] With reference to Figure 2 And Figure 3 Further, the upper end of the side of the plurality of adjusting blocks 6 close to each other is provided with a slope structure, the slope structure is in abutment with the limiting ball 5, so as to lift the limiting ball 5. At the same time, the side of the transmission rod 3 away from the limiting ball 5 on the limiting plate 4 is also connected with the limiting plate 4 through a tension spring 31.

[0025] When the distance between the plurality of adjusting blocks 6 increases or decreases, the limiting ball 5 can be lifted up and down along the axis of the limiting plate 4 by the plurality of adjusting blocks 6, so as to drive the transmission rod 3 to drive the clamping plate 21 to rotate.

[0026] Here, the function of the tension spring 31 is only to pull the transmission rod 3 towards the mounting base 1 when the limiting ball 5 does not receive enough pushing force from the plurality of adjusting blocks 6, so that the clamping plate 21 rotates. In the actual installation process, a torsional spring can also be installed between the clamping plate 21 and the hand brake lever 2 to achieve this purpose, and the scheme shown in the application is only a preferred scheme more suitable for the structure of the application.

[0027] Preferably, the slope structure on the plurality of adjusting blocks 6 is an arc structure and is in surface contact with the limiting ball 5, so as to avoid the pressure of the limiting ball 5 on the adjusting block 6 being too large, causing the adjusting block 6 to be damaged under long-term operation, thereby playing a role in protecting the parts.

[0028] The end of the limiting ball 5 away from the limiting plate 4 is in abutment with a top column 71, the top column 71 is integrally connected with a button 7 movably penetrated through the end of the hand brake lever 2. When the button 7 is pressed, the balance state of the limiting ball 5 is broken and is subjected to a force towards the mounting base 1, at this time, under the action of the same direction force of the tension spring 31 and the button 7, the limiting ball 5 can be easily pushed, thereby greatly reducing the driving force and achieving the purpose of saving labor.

[0029] The limiting plate 4 is provided with a plurality of sliding grooves 41 corresponding to the adjusting blocks 6 in a circumferential direction on one side close to the adjusting blocks 6. The plurality of sliding grooves 41 are distributed in a radial direction of the limiting plate 4 and have a T-shaped structure in a cross section. The bottom end of each adjusting block 6 is integrally connected with a sliding block 62 slidingly fitted in the sliding groove 41, so that the adjusting block 6 will not tilt during sliding due to the inconsistent force direction and movement direction, thereby improving the structural stability of the brake lever during overall operation.

[0030] Further, the adjusting block 6 is provided with a flat area 63 connected with the slope structure on the side away from the limiting plate 4, and the flat areas 63 on the plurality of adjusting blocks 6 jointly abut against the buckle plate 8. The buckle plate 8 is fixedly connected to the hand brake lever 2, and the top column 71 slides through the buckle plate 8. The buckle plate 8 can share the transverse force generated by the limiting ball 5 on the adjusting block 6, so that the adjusting block 6 slides more easily and stably.

[0031] Referring to Figure 3 Preferably, a plurality of micro air cylinders 9 corresponding to the adjusting blocks 6 are embedded in the hand brake lever 2 in a circumferential direction, the extension rods of the micro air cylinders are coaxial with the compression springs 61 and the end portions thereof are movably abut against the adjusting blocks 6. The micro air cylinders 9 are electrically connected with the power supply of the automobile, and when the automobile is turned off and the power supply is disconnected, the extension rods of the micro air cylinders 9 are driven to abut against the adjusting blocks 6 so that the adjusting blocks 6 cannot move, at this time, the hand brake lever 2 is in a locked state, which can prevent the vehicle from moving due to accidental touch.

[0032] The implementation principle of the embodiment of the automobile hand brake lever transmission structure is as follows:

[0033] The movement of the limiting ball 5 along the axis of the limiting plate 4 is controlled by the sliding of the plurality of adjusting blocks 6 in a radial direction of the limiting plate 4, and then the transmission lever 3 is used to connect the clamping plate 21 and the limiting ball 5 to realize transmission connection. The tension spring 31 on the transmission lever 3 and the compression spring 61 on the adjusting block 6 jointly act on the adjusting block 6 and the limiting ball 5 to keep them in a balanced state when the brake lever is not subjected to external force.

[0034] The button 7 abuts against the limiting ball 5, and when the button 7 is pressed, the limiting ball 5 can be driven to move under the joint action of the pressing force and the tension spring 31, thereby driving the clamping plate 21 to rotate, which is labor-saving and can ensure that the driver's hand has sufficient pressing feedback, and the structure is simple and convenient to maintain.

[0035] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, therefore: any equivalent changes made on the structure, shape, principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A hand brake lever transmission structure of an automobile, comprising a mounting base (1) provided with a ratchet wheel (11), a hand brake lever (2) having one end rotatably connected with the mounting base (1), and a clamping plate (21) rotatably embedded in the hand brake lever (2), a brake rope (12) being wound around the ratchet wheel (11), the clamping plate (21) being provided with a clamping tooth (211) at one end, and the clamping plate (21) being hingedly provided with a transmission lever (3) at the other end, characterized in that: The hand brake lever (2) is embedded with a limiting plate (4) at one end away from the mounting base (1), the transmission rod (3) slides through the limiting plate (4), and is rotationally connected with a limiting ball (5) at one end through the limiting plate (4), a tension spring (31) is connected between the limiting plate (4) and the transmission rod (3) at a position along the axis and close to one side of the clamping plate (21), a plurality of adjusting blocks (6) are arranged on the limiting plate (4) and slide along the circumference, one side of each of the plurality of adjusting blocks (6) is a slope structure and abuts against the limiting ball (5), and a compression spring (61) is connected between the hand brake lever (2) and the other side of each of the plurality of adjusting blocks (6) away from the slope, a top post (71) abuts against one side of the limiting ball (5) away from the limiting plate (4), and the top post (71) is integrally connected with a button (7) sliding out of the hand brake lever (2) at one end.

2. The hand brake lever transmission structure of claim 1, wherein: A plurality of slide grooves (41) corresponding to the adjusting blocks (6) are arranged on one side of the limiting plate (4) close to the adjusting blocks (6) and spaced apart along the circumference, the cross sections of the plurality of slide grooves (41) are T-shaped, and the slide grooves (41) are in communication with the circumferential edge of the limiting plate (4) and the side close to the adjusting blocks (6), and each of the plurality of adjusting blocks (6) is integrally connected with a sliding block (62) on the side close to the limiting plate (4), and the sliding block (62) is slidingly fitted in the slide groove (41).

3. The hand brake lever transmission structure of claim 2, wherein: A flat area (63) connected with the slope structure is arranged on the side of each of the plurality of adjusting blocks (6) away from the limiting plate (4), and a buckle plate (8) abuts against the flat areas (63) of the plurality of adjusting blocks (6), the buckle plate (8) is fixedly clamped in the hand brake lever (2), and the top post (71) slides through the buckle plate (8).

4. The hand brake lever transmission structure of claim 3, wherein: A plurality of micro air cylinders (9) corresponding to the adjusting blocks (6) are embedded along the circumference in the hand brake lever (2), the micro air cylinders (9) are electrically connected with the vehicle power supply, and the extension rods of each of the micro air cylinders (9) abut against the corresponding adjusting block (6) when the vehicle is powered off.

5. The hand brake lever transmission structure for a vehicle according to claim 4, characterized in that: The slope structure on the adjusting block (6) is an arc structure, and the adjusting block (6) and the limiting ball (5) are in surface contact.

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