Double-acting type motor disc brake device

Abstract

The invention discloses a double-acting type motor disc brake device which comprises a driving module, a transmission module and an execution module. The driving module is composed of a motor, a bevel gear and a shell, the direction of torque output by the motor is changed through the bevel gear, and the torque is transmitted to the transmission module; the transmission module is composed of a gear, a transmission shaft and a bearing and used for increasing torque and transmitting the torque to the execution module. The execution module is composed of a threaded rod, brake pads and a bearing, threads on the left side and the right side of the threaded rod are opposite in rotating direction, torque drives the threaded rod to rotate and drives the two brake pads to move oppositely, and a brake disc is extruded to complete the braking action. The single motor is used for achieving simultaneous opposite movement of the brake pads on the two sides, and deformation caused by extrusion of the brake pads is avoided.

Description

Technical Field

[0001] The present invention relates to a disc brake, in particular to a double-acting disc brake driven by a single motor Background Art

[0002] Disc brakes are a braking system widely used in modern vehicles such as automobiles and motorcycles. They use the friction between the disc brake disc and the brake pad to slow down or stop the vehicle. Compared with drum brakes, disc brakes have better heat dissipation performance, higher braking efficiency, better handling and safety. Traditional single-piston disc brakes often squeeze the brake pad on one side when braking, causing the brake pad to deform to a certain extent, affecting the braking performance and safety of the braking system. Double-action disc brakes can avoid deformation of the brake pad and provide stronger and more balanced braking performance.

[0003] Patent CN103448853A provides a thin double-sided disc brake. The double-arm pull rod has two arms, a left arm and a right arm, and an elastic feel adjustment device is arranged between the two arms; the middle of the right push rod is inserted by the movable push rod, and one end of the right push rod has an annular groove for installing a retaining spring; the neck of the movable push rod has a through hole, and an elastic steel wire is inserted into the hole; the utility model can achieve dynamic clamping on both sides at the same time, but still adopts an indirect method to achieve dynamic clamping on both sides at the same time, and the two driving devices are installed on the same side, so the volume and height of the side are relatively large, which is not conducive to miniaturization and lightweight.

[0004] Patent CN 212055613U relates to a new type of mechanical disc brake device. A transmission shaft is provided in the installation cavity, and a second gear meshing with the first gear is provided on the transmission shaft. A positive thread portion and a negative thread portion are also provided on the transmission shaft. The positive thread portion matches the first threaded hole of the first clamping plate, and the negative thread portion matches the second threaded hole of the second clamping plate. The first threaded hole and the second threaded hole have the same thread direction. This utility model can realize direct bidirectional braking, but due to the lack of certain torque-increasing measures and the mechanical drive of the drive device, the required braking force is relatively large, and the strength requirements of the brake line material are higher.

[0005] Patent CN 103738450A discloses a mechanical double-action disc brake, wherein a driving arm and a driving disc are provided on the housing, a driving component for converting the rotational motion of the driving arm into the axial motion of the driving disc is connected between the driving arm and the driving disc, a first friction plate is installed on the end face of the driving disc, a second friction plate is installed on the housing, and the disc is arranged between the first friction plate and the second friction plate. This invention can make the two friction plates move toward the disc at the same time, and the disc does not need to be deformed during braking, but this invention will cause the friction plate to wear out after long-term use, and the surface will gradually become thinner, and it is necessary to readjust the distance between the brake pad and the brake disc or replace the brake pad, and the steps are relatively cumbersome. Summary of the invention

[0006] The present invention aims to avoid the deficiencies of the above-mentioned prior art and to provide a disc brake to achieve bidirectional braking, avoid deformation of the brake pads, and provide stronger and more balanced braking performance.

[0007] The present invention adopts the following technical solutions to solve the technical problems:

[0008] The double-acting motor disc brake device of the present invention is characterized by being composed of a drive module, a transmission module and an execution module; in the drive module, the torque output by the motor changes its direction through the bevel gear and is transmitted to the transmission module; in the transmission module, the bevel gear drives the transmission shaft to rotate, and the transmission shaft transmits the torque to two spur gears, and the spur gears further transmit the torque to the execution module; in the execution module, the threaded rod rotates under the action of the torque and drives the two brake pads to move toward each other, squeezing the brake disc to complete the braking action, and after the braking is completed, the torsion spring generates torque, and the rotating transmission shaft completes the resetting.

[0009] The double-acting motor disc brake device of the present invention is also characterized in that: in the drive module, the motor is mounted on a mounting plate inside the housing and fixedly connected by four bolts; bevel gear one is mounted on the D-shaped shaft of the motor and is connected by an interference fit; and bevel gear one is meshed with bevel gear two.

[0010] The double-acting motor disc brake device of the present invention is also characterized in that: in the transmission module, the bevel gear 2 is fixedly connected to the transmission shaft by a common flat key and is positioned using a shoulder arranged on the transmission shaft; there are two gears, which are installed on the left and right sides of the transmission shaft, and the gears are fixedly connected to the transmission shaft by the common flat key and are positioned using a shoulder arranged on the transmission shaft; bearings 1 are installed at both ends of the transmission shaft, the two are fixedly connected, and the bearing 1 is installed in the bearing groove of the outer shell.

[0011] The double-acting motor disc brake device of the present invention is also characterized in that: in the execution module, the gear is meshed with the threaded rod, and the threads at the left and right ends of the threaded rod have opposite rotation directions; brake pad 1 and brake pad 2 are both designed with two threaded holes, the threaded holes of the two brake pads have opposite rotation directions, and cooperate with the two threaded rods; two bearings are fixedly connected to the smooth rod part of the threaded rod, and the bearings are interference-connected with the bearing holes on the outer shell and indirectly locate the positions of the threaded holes; the brake disc is installed between the brake pad 1 and the brake pad 2, and the distance between the brake pad and the brake disc can be directly controlled by the motor; the positioning rod is fixedly installed on the transmission shaft, and the torsion spring is sleeved on the transmission shaft, one end of the torsion spring is hung in the positioning hole of the positioning rod, and the other end of the torsion spring is fixed in the positioning hole on the outer shell, and after adjusting the position of the torsion spring, the resetting of the braking action can be completed.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] 1. The present invention uses a motor as a driving element, which requires less braking force than traditional mechanical brakes, has lower strength requirements for materials such as brake lines, and has a smoother and faster output torque, making the brake device more maneuverable and safer.

[0014] 2. The present invention uses a double-threaded rod to control the brake pads to move toward each other, thereby achieving bidirectional braking, avoiding deformation of the brake pads, and providing stronger and more balanced braking performance. At the same time, the entire device is more streamlined and more efficient.

[0015] 3. The present invention can directly adjust the initial angle of the motor to change the distance between the brake pad and the brake disc, which is easier to operate and convenient for adjustment after the brake pad is worn. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the appearance structure of the present invention;

[0017] Figure 2 It is a left view of the internal structure of the present invention;

[0018] Figure 3 It is a front view of the internal structure of the present invention;

[0019] Numbers in the figure: 11 motor, 12 housing, 13 bevel gear 1, 21 bevel gear 2, 22 transmission shaft, 23 bearing 1, 24 gear, 25 common flat key, 31 threaded rod, 32 bearing 2, 33 brake pad 1, 34 brake pad 2, 35 positioning rod, 36 torsion spring, 37 brake disc. DETAILED DESCRIPTION

[0020] The design of a double-acting motor disc brake device of the present invention is further described below in conjunction with the accompanying drawings.

[0021] See also Figure 1 In this example, the novel internal wiper based on the gear rack structure includes a motor 11, a housing 12, a bevel gear 1 13, a bevel gear 2 21, a transmission shaft 22, a bearing 1 23, a gear 24, a common flat key 25, a threaded rod 31, a bearing 2 32, a brake pad 1 33, a brake pad 2 34, a positioning rod 35, a torsion spring 36, and a brake disc 37.

[0022] See also Figure 1 , Figure 2 and Figure 3For the drive module, the motor 11 is mounted on the mounting plate of the housing 12 and fixedly connected by bolts, and the bevel gear 13 is mounted on the D-shaped shaft of the motor 11 and is connected by interference fit; after the power is turned on, the motor 11 rotates to a specified angle so that the brake pad 1 33 and the brake pad 2 34 maintain a certain distance from the brake disc 37 and enter a standby state; when the brake signal is transmitted to the motor 11, the motor 11 immediately generates a certain torque and drives the bevel gear 1 13 to rotate; the bevel gear 1 13 meshes with the bevel gear 2 21 and transmits the torque to the transmission module.

[0023] See also Figure 1 , Figure 2 and Figure 3 For the transmission module, the bevel gear 21 is fixedly connected to the transmission shaft 22 through the common flat key 25 and is positioned by the shoulder provided on the transmission shaft 22; there is a certain transmission ratio between the bevel gear 21 and the bevel gear 1 13, thereby achieving the effect of reducing speed and increasing torque; there are two gears 24, which are installed on the left and right sides of the transmission shaft 22, and the gear 24 is fixedly connected to the transmission shaft 22 through the common flat key 25, and is positioned by the shoulder provided on the transmission shaft 22; the torque generated by the driving module is transmitted to the gear 24 by the transmission shaft 22 after the torque is increased in the transmission module and further acts on the execution module; bearings 1 23 are installed at both ends of the transmission shaft 22, and the two are fixedly connected, and the bearing 1 23 is installed in the bearing groove of the housing 12.

[0024] See also Figure 1 , Figure 2 and Figure 3 For the execution module, the gear 24 is meshed with the threaded rod 31, and the gear 24 transmits the torque to the threaded rod 31; the threads at the left and right ends of the threaded rod 31 are in opposite directions; the brake pad 1 33 and the brake pad 2 34 are designed with two threaded holes, the threaded holes of the two brake pads are in opposite directions, and cooperate with the two threaded rods 31; when the threaded rod 31 rotates, it can drive the brake pad 1 33 and the brake pad 2 34 to move towards each other, completing two-way braking; two bearings 2 32 are fixedly connected to the light rod part of the threaded rod 31, and the bearings 2 32 are fixedly connected to the The bearing hole on the housing 12 is interference connected and indirectly locates the position of the threaded hole; the brake disc 37 is installed between the brake pad 1 33 and the brake pad 2 34, and the distance between the brake pad and the brake disc can be directly controlled by the motor; the positioning rod 35 is fixedly installed on the transmission shaft 22, and the torsion spring 36 is sleeved on the transmission shaft 22, one end of the torsion spring 36 is hung in the positioning hole of the positioning rod 35, and the other end of the torsion spring 36 is fixed in the positioning hole on the housing 12. After adjusting the position of the torsion spring 36, the braking action can be reset.

Claims

1. A double-acting motor disc brake device, characterized in that It consists of a driving module, a transmission module and an execution module; in the driving module, the torque output by the motor changes its direction through the bevel gear and is transmitted to the transmission module; in the transmission module, the bevel gear drives the transmission shaft to rotate, and the transmission shaft transmits the torque to the spur gear, and the spur gear transmits the torque to the execution module; in the execution module, the threaded rod rotates under the action of the torque and drives the two brake pads to move towards each other, squeezing the brake disc to complete the braking action, and after braking is completed, the torsion spring generates torque, and the rotating transmission shaft completes the reset.

2. The double-acting motor disc brake device according to claim 1 is characterized in that: In the driving module, the motor (11) is mounted on a mounting plate in a housing (12); a bevel gear 1 (13) is mounted on a D-shaped shaft of the motor (11) by means of an interference fit; and the bevel gear 1 (13) is meshed with a bevel gear 2 (21).

3. The double-acting motor disc brake device according to claim 1 is characterized in that: In the transmission module, the bevel gear 2 (21) is fixedly connected to the transmission shaft (22) via a flat key (25) and is positioned using a shaft shoulder provided on the transmission shaft (22); there are two gears (24), which are respectively mounted on the left and right sides of the transmission shaft (22); the gears (24) are fixedly connected to the transmission shaft (22) via the flat key (25) and are positioned using a shaft shoulder provided on the transmission shaft (22); bearings 1 (23) are mounted at both ends of the transmission shaft (22), the two are fixedly connected, and the bearings 1 (23) are mounted in bearing grooves of the housing (12).

4. The double-acting motor disc brake device according to claim 1 is characterized in that: In the execution module, the gear (24) is meshed with the threaded rod (31), and the threads at the left and right ends of the threaded rod (31) are in opposite directions; the brake pad 1 (33) and the brake pad 2 (34) are both designed with two threaded holes, the threaded holes of the two brake pads are in opposite directions, and are matched with the two threaded rods (31); two bearings 2 (32) are fixedly connected to the bare rod part of the threaded rod (31), and the bearings 2 (32) are interference-connected with the bearing holes on the housing (12) and indirectly locate the positions of the threaded holes; the brake disc (3 7) is installed between the brake pad 1 (33) and the brake pad 2 (34), and the distance between the brake pad and the brake disc is directly controlled by the motor; the positioning rod (35) is fixedly installed on the transmission shaft (22), and the torsion spring (36) is sleeved on the transmission shaft (22), one end of the torsion spring (36) is hung in the positioning hole of the positioning rod (35), and the other end of the torsion spring (36) is fixed in the positioning hole on the housing (12), and the braking action is reset after adjusting the position of the torsion spring (36).

Images