Automobile redundant parking locking structure

Abstract

The utility model discloses an automobile redundant parking locking structure, which belongs to the field of redundant braking and comprises a redundant locking mechanism and a braking control mechanism which are assembled on rear wheels, and the redundant locking mechanism comprises a braking motor, a locking component and a rotation angle acquisition component. The locking assembly comprises a locking disc and an electromagnetic bolt which are fixed on an output shaft of the brake motor, a locking hole is formed in the locking disc, and the electromagnetic bolt is arranged corresponding to the locking hole; the brake control mechanism comprises a controller electrically connected with the whole vehicle controller, the input end of the controller is electrically connected with the rotation angle collecting assembly, and the output end of the controller is electrically connected with the brake motor and the electromagnetic bolt. According to the redundant parking locking structure of the automobile, the redundant electromagnetic locking structure is arranged on the rear wheel, the redundant parking locking structure can act when brake control fails, the brake safety is improved, the electromagnetic bolt is adopted for locking, the response speed is higher, the structure is more compact, the space utilization rate is higher, and mechanical abrasion is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of redundant braking, in particular to a redundant parking lock structure for an automobile. Background Art

[0002] The existing parking brake integrator mainly realizes parking lock through ratchet pawl mechanism, and its operation steps are as follows: when the parking brake signal is received and the braking force required for parking is provided, the pawl and ratchet tooth groove are engaged to achieve the parking state; on the contrary, the pawl and ratchet are disengaged to achieve the unlocking state. This structure has problems such as high noise, high friction, easy wear, and cannot be integrated into the electronic mechanical brake system. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a redundant parking lock structure for an automobile. By arranging a redundant electromagnetic locking structure on the rear wheel, it can be activated when the brake control fails, thereby improving braking safety. In addition, the electromagnetic latch lock is adopted, which has a faster response speed, a more compact structure, a higher space utilization rate, and reduces mechanical wear.

[0004] To achieve the above-mentioned purpose, the utility model provides a redundant parking lock structure for an automobile, comprising a redundant locking mechanism and a brake control mechanism mounted on the rear wheel, the redundant locking mechanism comprising a brake motor, a locking assembly and a rotation angle acquisition assembly, the locking assembly comprising a locking plate and an electromagnetic latch fixed on the output shaft of the brake motor, a locking hole being provided on the locking plate, and the electromagnetic latch being arranged corresponding to the locking hole;

[0005] The brake control mechanism includes a controller electrically connected to the vehicle controller, an input end of the controller electrically connected to the rotation angle acquisition component, and an output end of the controller electrically connected to the brake motor and the electromagnetic plug respectively.

[0006] Preferably, the rotation angle acquisition component includes a magnet fixed on the locking plate and a Hall sensor fixed on the motor housing of the brake motor at a position close to the magnet, and the Hall sensor is electrically connected to the input end of the controller.

[0007] Preferably, the locking disk is a hollow structure, and a mounting hole for interference fit with the output shaft of the brake motor is provided at the center of the locking disk, and a mounting groove is provided on the inner wall of the mounting hole, and a magnet is installed in the mounting groove.

[0008] Preferably, the locking disk is provided with two locking holes, the two locking holes are symmetrical about the center of the locking disk, and the two locking holes are arranged at the edge of the locking disk;

[0009] Two locking heads are arranged on the electromagnetic latch and at positions corresponding to the two locking holes.

[0010] Preferably, the redundant locking mechanism is integrated inside the wheel-end actuator of the rear wheel.

[0011] The utility model has the following beneficial effects:

[0012] By setting up a redundant electromagnetic locking structure on the rear wheel, it can be activated when the brake control fails to improve braking safety. The use of electromagnetic latch locking has a faster response speed, a more compact structure, higher space utilization, and reduced mechanical wear.

[0013] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural schematic diagram of a redundant parking lock structure for an automobile according to the utility model;

[0015] Figure 2 A schematic diagram of a locking disc structure of a redundant parking lock structure for an automobile according to the utility model;

[0016] Figure 3 The utility model is an assembly diagram of a redundant parking lock structure for an automobile.

[0017] Among them: 1. Brake motor; 2. Locking plate; 21. Assembly hole; 22. Locking hole; 23. Weight reduction hole; 3. Electromagnetic latch; 4. Wheel end actuator. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings. It should be noted that this embodiment is based on the technical solution and provides a detailed implementation method and a specific operation process, but the protection scope of the present invention is not limited to this embodiment.

[0019] like Figure 1-Figure 3 As shown, a redundant parking lock structure for an automobile includes a redundant locking mechanism and a brake control mechanism mounted on the rear wheel. In this embodiment, the redundant locking mechanism is integrated into the wheel-end actuator 4 of the rear wheel. The redundant locking mechanism includes a brake motor 1, a locking assembly and a rotation angle acquisition assembly. The locking assembly includes a locking plate 2 and an electromagnetic latch 3 fixed on the output shaft of the brake motor 1. The locking plate 2 is provided with a locking hole 22, and the electromagnetic latch 3 is arranged corresponding to the locking hole 22; the brake control mechanism includes a controller electrically connected to the vehicle controller, the input end of the controller is electrically connected to the rotation angle acquisition assembly, and the output end of the controller is electrically connected to the brake motor 1 and the electromagnetic latch 3 respectively.

[0020] Specifically, the rotation angle acquisition component includes a magnet fixed on the locking plate 2 and a Hall sensor fixed on the motor housing of the brake motor 1 close to the magnet, and the Hall sensor is electrically connected to the input end of the controller.

[0021] The locking plate 2 is a hollow structure, that is, a weight-reducing hole 23 is provided on the locking plate 2 to reduce the overall deadweight. An assembly hole 21 for interference fit with the output shaft of the brake motor 1 is provided in the center of the locking plate 2. An installation groove is provided on the inner wall of the assembly hole 21, and a magnet is installed in the installation groove.

[0022] The locking disk 2 is provided with two locking holes 22 symmetrically about the center of the locking disk 2 and both are arranged at the edge of the locking disk 2 ; two locking heads are provided on the electromagnetic latch 3 corresponding to the positions of the two locking holes 22 .

[0023] Working principle:

[0024] When the controller receives the parking signal sent by the vehicle controller, the controller first rotates the output shaft of the brake motor 1 by a set angle until the Hall sensor detects that the rotation angle of the brake motor 1 is equal to the set angle. At this time, the locking head and the locking hole 22 are aligned, and the brake motor 1 stops running. Then the electromagnetic latch 3 is controlled to move, push the locking head out, and extend it into the locking hole 22 to complete the locking.

[0025] When the controller receives the parking unlock signal sent by the vehicle controller, the electromagnetic latch 3 controls the locking head to retract, releases the limit on the locking plate 2 and the brake motor 1, and then controls the brake motor 1 to rotate in the opposite direction to the set angle to release the brake on the rear wheel.

[0026] Therefore, the utility model adopts the redundant parking lock structure of the automobile with the above structure. By setting a redundant electromagnetic locking structure on the rear wheel, it can be activated when the brake control fails, thereby improving braking safety. In addition, the electromagnetic latch lock is adopted, which has a faster response speed, a more compact structure, a higher space utilization rate, and reduces mechanical wear.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. A redundant parking lock structure for an automobile, characterized in that: It includes a redundant locking mechanism and a brake control mechanism mounted on the rear wheel, the redundant locking mechanism includes a brake motor, a locking assembly and a rotation angle acquisition assembly, the locking assembly includes a locking plate and an electromagnetic latch fixed on the output shaft of the brake motor, a locking hole is opened on the locking plate, and the electromagnetic latch is arranged corresponding to the locking hole; The brake control mechanism includes a controller electrically connected to the vehicle controller, an input end of the controller electrically connected to the rotation angle acquisition component, and an output end of the controller electrically connected to the brake motor and the electromagnetic plug respectively.

2. The redundant parking lock structure for an automobile according to claim 1, characterized in that: The rotation angle acquisition component includes a magnet fixed on the locking plate and a Hall sensor fixed on the motor housing of the brake motor at a position close to the magnet. The Hall sensor is electrically connected to the input end of the controller.

3. The redundant parking lock structure for an automobile according to claim 2, characterized in that: The locking plate is a hollow structure, and a mounting hole for interference fit with the output shaft of the brake motor is opened at the center of the locking plate, and a mounting groove is opened on the inner wall of the mounting hole, and a magnet is installed in the mounting groove.

4. The redundant parking lock structure for an automobile according to claim 3, characterized in that: The locking plate is provided with two locking holes, the two locking holes are symmetrical about the center of the locking plate, and the two locking holes are arranged at the edge of the locking plate; Two locking heads are arranged on the electromagnetic latch and at positions corresponding to the two locking holes.

5. The redundant parking lock structure for an automobile according to claim 1, characterized in that: The redundant locking mechanism is integrated into the wheel-end actuator of the rear wheel.

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