Clutch parking mechanism of automobile braking system, automobile braking system and automobile

Abstract

The invention relates to the technical field of automobile braking, and discloses a clutch parking mechanism of an automobile braking system, the automobile braking system and an automobile, and the clutch parking mechanism comprises a first gear ring which can move in the axial direction of the first gear ring; the connecting gear is used for being connected with a brake master cylinder in an automobile brake system, the connecting gear and the first gear ring are coaxially arranged, and meshing teeth capable of being meshed are arranged on the end faces, close to the first gear ring, of the connecting gear respectively. An output shaft of the first driving device is connected with a transmission mechanism; the transmission mechanism is connected with the first gear ring; and an output shaft of the second driving device is connected with the connecting gear. The device has the advantages of being high in reliability and safety, compact in structure and capable of reducing the number of parts.

Description

Technical Field

[0001] The invention relates to the technical field of automobile braking, in particular to a clutch parking mechanism of an automobile braking system, an automobile braking system and an automobile. Background Art

[0002] The parking mechanism is mainly used to stabilize the vehicle after it stops to avoid accidents caused by the vehicle rolling when parking on a slope. At present, the most commonly used is the manual brake lever parking brake. The manual pull rod parking brake is achieved by manually pulling the brake lever, using the brake lever to tighten the parking brake cable, so that the brake cylinder piston tightens and presses the brake pad, thereby achieving parking braking.

[0003] However, the existing manual pull-rod parking mechanism is laborious to operate and may fail to achieve the purpose of parking brake due to failure to tighten the brake rod. It is not intelligent, requires large layout space and has a complex structure. Summary of the invention

[0004] The object of the present invention is to provide a clutch parking mechanism of an automobile braking system, an automobile braking system and an automobile, aiming to solve or improve at least one of the above-mentioned technical problems.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides a clutch parking mechanism of an automobile braking system, comprising:

[0006] The first gear ring is movable along its own axial direction;

[0007] A connecting gear, used to connect with a brake master cylinder in a vehicle brake system, the connecting gear and the first gear ring are coaxially arranged, and the end surfaces of the connecting gear and the first gear ring close to each other are respectively provided with meshing teeth that can mesh;

[0008] A first driving device, wherein the output shaft is connected to a transmission mechanism, and the transmission mechanism is connected to the first gear ring;

[0009] The second driving device has an output shaft connected to the connecting gear.

[0010] Optionally, the transmission mechanism includes:

[0011] A guide member, slidably engaged with the first gear ring;

[0012] A transmission member is connected to the first driving device, and the transmission member is transmission-connected to the first ring gear.

[0013] Optionally, the transmission member includes a second gear ring, which is sleeved on the first gear ring, and the inner ring of the second gear ring and the outer ring of the first gear ring are respectively provided with transmission-matching threaded teeth.

[0014] Optionally, a worm wheel is disposed on the outer ring of the second gear ring, the worm wheel is meshed with a worm, and the worm is connected to the output shaft of the first driving device.

[0015] Optionally, the guide member includes:

[0016] A base, fixedly connected to the second driving device;

[0017] The sleeve is fixedly connected to the base, the first gear ring is slidably sleeved on the sleeve, and the outer surface of the sleeve has a plurality of limiting steps that match the first gear ring.

[0018] Optionally, a thrust ball bearing is provided between the second gear ring and the base.

[0019] Optionally, a gear mechanism is also included for connecting the connecting gear and a brake master cylinder in a vehicle braking system.

[0020] Optionally, it also includes an electronic control unit connected to the first drive device and the second drive device.

[0021] The present invention also provides a vehicle braking system, comprising:

[0022] Brake master cylinder;

[0023] The clutch parking mechanism of the automobile braking system;

[0024] Wherein, the connecting gear is connected to the brake master cylinder.

[0025] The present invention also provides a car, comprising the above-mentioned car braking system.

[0026] The present invention discloses the following technical effects: a first drive device drives a transmission mechanism to drive the first gear ring to move along its own axial direction toward or away from the connecting gear, so that the first gear ring and the connecting gear can be engaged or separated through the meshing teeth on the opposite surfaces, thereby achieving the locking of the connecting gear, thereby achieving parking and releasing, and has the advantages of high reliability, high safety, compact structure, and reduced number of parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a cross-sectional view of the present invention.

[0030] In the figure: 1. first ring gear; 2. connecting gear; 3. first driving device; 4. second driving device; 5. second ring gear; 6. worm gear; 7. worm; 8. base; 9. sleeve; 10. limit step; 11. thrust ball bearing; 12. electronic control unit; 13. intermediate gear; 14. input gear; 15. planetary gear system; 16. housing. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figure 1-Figure 2 The present invention provides a clutch parking mechanism of an automobile braking system, comprising:

[0034] The first gear ring 1 can move along its own axial direction;

[0035] The connecting gear 2 is used to connect with the brake master cylinder in the automobile brake system. The connecting gear 2 is coaxially arranged with the first gear ring 1. The end surfaces of the connecting gear 2 and the first gear ring 1 that are close to each other are respectively provided with meshing teeth that can mesh;

[0036] The first driving device 3, the output shaft of which is connected to a transmission mechanism, and the transmission mechanism is connected to the first gear ring 1;

[0037] The second driving device 4 , the output shaft is connected to the connecting gear 2 .

[0038] The transmission mechanism is driven by the first driving device 3 to drive the first ring gear 1 to move toward or away from the connecting gear 2 along its own axial direction, so that the first ring gear 1 and the connecting gear 2 can be engaged or separated through the meshing teeth on the opposite surfaces, thereby achieving the locking of the connecting gear 2, thereby achieving parking and releasing, which has the advantages of high reliability, high safety, compact structure, and reduced number of parts.

[0039] In one embodiment of the present invention, the transmission mechanism comprises:

[0040] A guide member, slidingly matched with the first gear ring 1;

[0041] The transmission member is connected to the first driving device 3 , and the transmission member is transmission-connected to the first ring gear 1 .

[0042] The moving direction of the first gear ring 1 is guided by the guide member, and the first driving device 3 drives the transmission member so that the first gear ring 1 moves along its own axial direction under the guiding limit of the guide member, so that the first gear ring 1 and the connecting gear 2 are coaxially arranged.

[0043] In one embodiment of the present invention, the transmission member includes a second gear ring 5, which is sleeved on the first gear ring 1, and the inner ring of the second gear ring 5 and the outer ring of the first gear ring 1 are respectively provided with threaded teeth for transmission matching.

[0044] The second gear ring 5 is driven to rotate by the first driving device 3 , and the threaded teeth in the second gear ring 5 cooperate with the threaded teeth on the first gear ring 1 , so that the first gear ring 1 moves.

[0045] In one embodiment of the present invention, a worm wheel 6 is disposed on the outer ring of the second gear ring 5 , a worm 7 is meshed with the worm wheel 6 , the worm 7 is connected to the output shaft of the first driving device 3 , and the worm wheel 6 and the second gear ring 5 are integrally formed.

[0046] The transmission of the worm wheel 6 and the worm 7 can realize a large reduction ratio and achieve self-locking.

[0047] In one embodiment of the present invention, the guide member comprises:

[0048] A base 8 is fixedly connected to the second driving device 4;

[0049] The sleeve 9 is fixedly connected to the base 8 , and the first gear ring 1 is slidably sleeved on the sleeve 9 . The outer surface of the sleeve 9 has a plurality of limiting steps 10 that match the first gear ring 1 .

[0050] The first gear ring 1 is guided and limited by a plurality of limiting steps 10 on the sleeve 9 .

[0051] The sleeve 9 is covered on the output shaft of the first driving device 3 .

[0052] In one embodiment of the present invention, a thrust ball bearing 11 is disposed between the second gear ring 5 and the base 8 .

[0053] The thrust ball bearing 11 can effectively reduce the friction coefficient between the second gear ring 5 and the base 8, thereby improving the transmission efficiency.

[0054] In one embodiment of the present invention, a gear mechanism is further included, which is used to connect the connecting gear 2 and the brake master cylinder in the automobile braking system.

[0055] The gear mechanism includes an intermediate gear 13 meshing with the connecting gear 2, an input gear 14 meshing with the intermediate gear 13, and a planetary gear train 15 meshing with a sun gear coaxially integrated with the input gear 14. The planetary gear train 15 is used to connect with the brake master cylinder.

[0056] In one embodiment of the present invention, an electronic control unit 12 is further included, which is connected to the first driving device 3 and the second driving device 4 .

[0057] The electronic control unit 12 is used to transmit control signals to the first driving device 3 and the second driving device 4 .

[0058] After the electronic control unit 12 receives the vehicle VCU or parking switch command, the second drive device 4 is first started to brake the vehicle. After the vehicle stops, the first drive device 3 is started to drive the worm wheel 6 and the worm 7 to rotate. The turbine 6 and the second ring gear 5 are an integrated structure. The second ring gear 5 rotates, pushing the first ring gear 1 to move axially and mesh with the end face of the connecting gear 2. Then the second drive device 4 and the first drive device 3 stop, and parking is achieved through the self-locking mechanism.

[0059] Furthermore, a shell 16 for protection is also included.

[0060] The present invention also provides a vehicle braking system, comprising:

[0061] Brake master cylinder;

[0062] A clutch parking mechanism of an automobile braking system;

[0063] Among them, the connecting gear 2 is connected to the brake master cylinder.

[0064] The invention also provides a vehicle, comprising a vehicle braking system.

[0065] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0066] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A clutch parking mechanism of an automobile braking system, characterized in that: include: The first gear ring (1) is movable along its own axial direction; A connecting gear (2) is used to connect to a brake master cylinder in a brake system of an automobile, the connecting gear (2) is coaxially arranged with the first gear ring (1), and the end surfaces of the connecting gear (2) and the first gear ring (1) close to each other are respectively provided with meshing teeth; A first driving device (3), the output shaft of which is connected to a transmission mechanism, wherein the transmission mechanism is connected to the first gear ring (1); The second driving device (4) has an output shaft connected to the connecting gear (2).

2. The clutch parking mechanism of the automobile braking system according to claim 1, characterized in that: The transmission mechanism comprises: A guide member, slidably engaged with the first gear ring (1); A transmission member is connected to the first drive device (3), and the transmission member is in transmission connection with the first gear ring (1).

3. The clutch parking mechanism of the automobile braking system according to claim 2, characterized in that: The transmission member comprises a second gear ring (5) which is sleeved on the first gear ring (1); the inner ring of the second gear ring (5) and the outer ring of the first gear ring (1) are respectively provided with threaded teeth for transmission matching.

4. The clutch parking mechanism of the automobile braking system according to claim 3, characterized in that: The outer ring of the second gear ring (5) is provided with a worm wheel (6), the worm wheel (6) is meshed with a worm (7), and the worm (7) is connected to the output shaft of the first driving device (3).

5. The clutch parking mechanism of the automobile braking system according to claim 3, characterized in that: The guide member comprises: A base (8) fixedly connected to the second driving device (4); A sleeve (9) is fixedly connected to the base (8); the first gear ring (1) is slidably sleeved on the sleeve (9); and the outer surface of the sleeve (9) has a plurality of limiting steps (10) that match the first gear ring (1).

6. The clutch parking mechanism of the automobile braking system according to claim 5, characterized in that: A thrust ball bearing (11) is provided between the second gear ring (5) and the base (8).

7. The clutch parking mechanism of the automobile braking system according to claim 1, characterized in that: It also comprises a gear mechanism for connecting the connecting gear (2) and a brake master cylinder in a vehicle braking system.

8. The clutch parking mechanism of the automobile braking system according to claim 1, characterized in that: It also includes an electronic control unit (12) connected to the first drive device (3) and the second drive device (4).

9. An automobile braking system, characterized in that: include: Brake master cylinder; A clutch parking mechanism of an automobile braking system according to any one of claims 1 to 8; Wherein, the connecting gear (2) is connected to the brake master cylinder.

10. An automobile, characterized in that: A vehicle braking system comprising the method described in claim 9.

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