CN212654335U

CN212654335U - Electronic braking system and vehicle

Info

Publication number: CN212654335U
Application number: CN202021376680.4U
Authority: CN
Inventors: 张红兴; 范成建
Original assignee: Beijing Jingwei Hirain Tech Co Ltd
Current assignee: Beijing Jingwei Hirain Tech Co Ltd
Priority date: 2020-07-14
Filing date: 2020-07-14
Publication date: 2021-03-05
Anticipated expiration: 2030-07-14

Abstract

The utility model discloses an electronic braking system and vehicle relates to car braking technical field. The electronic braking system comprises a transmission device, a connecting mechanism and a braking executing mechanism, wherein the transmission device comprises a first transmission mechanism and a second transmission mechanism, and the first transmission mechanism is connected with a motor and can drive the braking executing mechanism through the connecting mechanism; the second transmission mechanism is connected with the pedal rod, and a decoupling gap is arranged between the second transmission mechanism and the connecting mechanism. The decoupling mechanism is arranged on the connecting mechanism and is configured to be inserted into the decoupling gap after power is cut off, so that the second transmission mechanism can drive the brake actuating mechanism through the connecting mechanism. The utility model provides an electronic braking system can eliminate the decoupling zero clearance when electronic braking became invalid, improves driver's driving experience.

Description

Electronic braking system and vehicle

Technical Field

The utility model relates to an automobile brake technical field especially relates to an electronic braking system and vehicle.

Background

An electronic brake boosting system is a development trend of a vehicle parking brake system, and the feeling of a real pedal is simulated through a pedal simulator.

In the existing automobile electronic brake power-assisted system, a brake system comprises a piston cylinder, a top disc, a main cylinder and a gear rack transmission mechanism driven by a motor, wherein one end of the piston cylinder is connected with a pedal rod, and the top disc is arranged between the piston cylinder and the main cylinder. During mechanical braking, a driver steps on a brake pedal to push a pedal rod, the pedal rod drives a piston rod to move, and the piston rod drives a main cylinder to brake through a top plate; during electronic braking, a driver steps on a brake pedal, the pedal stroke simulator senses braking force applied to the pedal by the driver, the starting motor drives the gear to push the rack, and the rack acts on the top plate to push the master cylinder to generate braking force. In order to avoid the pedal force of the driver acting on the master cylinder during the electronic braking, a decoupling gap exists between the piston rod and the top plate. However, when the electronic brake system fails, the braking of the vehicle needs to be completed through mechanical braking, and in order to compensate for the decoupling gap, a driver needs to step on a section of idle stroke, so that the braking experience of the driver is poor, and potential safety hazards are brought to the vehicle braking.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electronic braking system to the decoupling zero clearance is eliminated in the realization when electronic braking became invalid, improves driver's driving experience.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides an electronic braking system, includes transmission, coupling mechanism and braking actuating mechanism, transmission includes first drive mechanism and second drive mechanism, first drive mechanism is connected with the motor, second drive mechanism is connected with the foot bar, second drive mechanism with be provided with the decoupling zero clearance between the coupling mechanism, wherein still include decoupling zero mechanism, decoupling zero mechanism set up in on the coupling mechanism, the decoupling zero mechanism is configured to insert after the outage in the decoupling zero clearance, so that second drive mechanism passes through the coupling mechanism drive braking actuating mechanism.

Optionally, the decoupling mechanism comprises a coil assembly and a mortise lock, the coil assembly enabling the mortise lock to be inserted into the decoupling gap so that the second transmission mechanism abuts against the mortise lock.

Optionally, the coil assembly includes a coil and a coil fixing member, the coil is disposed in the coil fixing member, the coil is energized, and the coil fixing member is attracted to the mortise lock; the coil is powered off, the coil fixing piece is separated from the mortise lock, and the mortise lock after separation can be inserted into the decoupling gap.

Optionally, the mortise lock is of a stepped cylindrical structure.

Optionally, the decoupling mechanism further includes an elastic resetting member, one end of the elastic resetting member is connected to the coil fixing member, and the other end of the elastic resetting member is connected to the mortise lock.

Optionally, the connecting mechanism includes a top disc and a connecting shaft, one end of the connecting shaft is connected with the first end of the top disc, and the other end of the connecting shaft is connected with the braking executing mechanism.

Optionally, the second end of the top disc is provided with a central hole, the central hole constituting the decoupling gap.

Optionally, a through hole is formed in the second end of the top plate in a direction perpendicular to the axis of the top plate, and the decoupling mechanism is arranged in the through hole.

Optionally, a first step surface and a second step surface are arranged in the through hole, the coil fixing piece is arranged on the first step surface, and the mortise lock can be abutted to the second step surface.

Another object of the utility model is to provide a vehicle to the realization can in time brake when the electronic braking became invalid, improved the braking security.

a vehicle comprises the electronic brake system.

The utility model has the advantages that:

the utility model provides an electronic braking system, through set up decoupling zero mechanism on coupling mechanism, in the decoupling zero mechanism outage back inserted the decoupling zero clearance to make second drive mechanism pass through coupling mechanism drive braking actuating mechanism. When the electronic brake normally works, a decoupling gap exists between the second transmission mechanism and the connecting mechanism, and the motor drives the first transmission mechanism to push the brake actuating mechanism to generate braking force through the connecting mechanism so as to brake the vehicle; when the electronic brake fails, the decoupling mechanism is inserted into the decoupling gap, the second transmission mechanism acts on the decoupling mechanism, and the decoupling mechanism and the connecting mechanism are connected to push the brake actuating mechanism to generate braking force so as to realize vehicle braking. The utility model provides an electronic braking system can eliminate the decoupling zero clearance when electronic braking became invalid, improves driver's driving experience.

The utility model provides a vehicle uses foretell electronic braking system, can in time brake when the electronic braking became invalid, has improved the security of vehicle braking.

Drawings

Fig. 1 is a schematic structural diagram of an electronic brake system according to an embodiment of the present invention during normal operation of an electronic brake;

fig. 2 is a schematic structural diagram of an electronic braking system according to an embodiment of the present invention when an electronic brake fails;

fig. 3 is a schematic structural diagram of a decoupling mechanism provided in the embodiment of the present invention.

In the figure:

1. a foot bar; 2. a second transmission mechanism; 3. a first transmission mechanism; 4. a connecting mechanism; 5. a decoupling mechanism; 6. a master cylinder; 7. a housing;

21. a piston cylinder; 22. a piston rod; 23. a first spring; 31. a rack; 32. a gear; 41. a top tray; 42. a connecting shaft; 51. a coil assembly; 52. a mortise lock; 53. an elastic reset member; 61. a second spring;

411. a through hole; 511. a coil; 512. a coil fixing member; 521. a second accommodating chamber;

5121. a first receiving cavity.

Detailed Description

In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

As shown in fig. 1 and 2, the present embodiment provides an electronic brake system, which includes a transmission device, a connection mechanism 4, and a brake actuator, wherein the transmission device includes a first transmission mechanism 3 and a second transmission mechanism 2, the first transmission mechanism 3 is connected to a motor, and the brake actuator can be driven by the connection mechanism 4. The second transmission mechanism 2 is connected with the pedal rod 1, and a decoupling gap is arranged between the second transmission mechanism 2 and the connecting mechanism 4. The brake system further comprises a decoupling mechanism 5, the decoupling mechanism 5 is arranged on the connecting mechanism 4, and the decoupling mechanism 5 is configured to be inserted into the decoupling gap after being powered off, so that the second transmission mechanism 2 can drive the brake actuating mechanism through the connecting mechanism 4.

According to the electronic brake system provided by the embodiment, the decoupling mechanism 5 is arranged on the connecting mechanism 4, and the decoupling mechanism 5 is inserted into the decoupling gap after being powered off, so that the second transmission mechanism 2 drives the brake actuating mechanism through the connecting mechanism 4. When the electronic brake normally works, a decoupling gap exists between the second transmission mechanism 2 and the connecting mechanism 4, and the motor drives the first transmission mechanism 3 to push the brake actuating mechanism to generate braking force through the connecting mechanism 4 so as to brake the vehicle; when the electronic brake fails, the decoupling mechanism 5 is inserted into the decoupling gap, the second transmission mechanism 2 acts on the decoupling mechanism 5, and the decoupling mechanism 5 and the connecting mechanism 4 are connected to push the brake actuating mechanism to generate braking force, so that the vehicle brake is realized. The utility model provides an electronic braking system can eliminate the decoupling zero clearance when electronic braking became invalid, improves driver's driving experience.

In this embodiment, the electronic brake system further includes a housing 7, the transmission device, the connection mechanism 4, and the decoupling mechanism 5 are disposed in the housing 7, the second transmission mechanism 2 includes a piston cylinder 21, a piston rod 22, and a first spring 23, the piston cylinder 21 includes a first cylinder, a second cylinder, and an end cap located between the first cylinder and the second cylinder, the piston cylinder 21 extends into the housing 7 from one end of the housing 7, the first cylinder is located outside the housing 7, the second cylinder is located inside the housing 7, and the end cap is fixedly connected to an end face of the housing 7 to seal the housing 7. The first cylinder body is communicated with the second cylinder body, the piston rod 22 is arranged in the piston cylinder 21, one end of the piston rod 22 is connected with the pedal rod 1 positioned outside the shell 7 through a connecting piece, and the other end of the piston rod can extend out of the piston cylinder 21 to be abutted against the decoupling mechanism 5. The first spring 23 is sleeved on the piston rod 22 and abuts against two ends in the second cylinder body, so that the piston rod 22 returns under the action of the elastic restoring force of the first spring 23 after braking is completed. The first transmission mechanism 3 comprises a gear 32 and a rack 31, the rack 31 is slidably connected with the outer ring of the second cylinder, the gear 32 is arranged on the outer side of the second cylinder, the gear 32 is connected with a motor, and the motor drives the gear 32 to rotate to drive the rack 31 to do linear motion. It should be noted that, in this embodiment, the rack 31 is configured as a sleeve, the sleeve is sleeved on the outer ring of the second cylinder and can slide on the outer ring of the second cylinder, and a side of the sleeve connected to the gear 32 is configured as a toothed structure to form the rack 31 and engage with the gear 32.

Alternatively, as shown in fig. 3, the decoupling mechanism 5 includes a coil assembly 51 and a latch 52, the coil assembly 51 enabling the latch 52 to be inserted into the decoupling gap to bring the second transmission mechanism 2 into abutment with the latch 52. Specifically, the coil assembly 51 comprises a coil 511 and a coil fixing member 512, the coil 511 is arranged in the coil fixing member 512, the coil 511 is electrified, and the coil fixing member 512 is attracted with the mortise lock 52; the coil 511 is de-energized, the coil holder 512 is separated from the latch 52, and the separated latch 52 can be inserted into the decoupling gap. In this embodiment, the outer diameter of the coil fixing member 512 is larger than the outer diameter of the mortise lock 52, both the coil fixing member 512 and the mortise lock 52 are made of metal, the coil 511 is energized to generate a magnetic field, and the coil fixing member 512 and the mortise lock 52 are attracted to form a decoupling gap; the coil 511 is powered off, the magnetic field disappears, the coil fixing piece 512 is separated from the mortise lock 52, the mortise lock 52 is inserted into the decoupling gap to be abutted against the piston rod 22, and the decoupling gap disappears.

Preferably, the decoupling mechanism 5 further includes an elastic restoring member 53, and one end of the elastic restoring member 53 is connected to the coil fixing member 512, and the other end is connected to the latch 52. Specifically, the coil fixing element 512 is provided with a first accommodating cavity 5121 at the end connected with the elastic reset element 53, the mortise lock 52 is provided with a second accommodating cavity 521 at the end connected with the elastic reset element 53, the first accommodating cavity 5121 and the second accommodating cavity 521 are arranged oppositely, and the two ends of the elastic reset element 53 are respectively clamped with the first accommodating cavity 5121 and the second accommodating cavity 521. In this embodiment, the elastic reset element 53 is a return spring, the coil 511 is energized, and under the action of the magnetic field, the coil fixing element 512 attracts the latch 52, and the latch 52 overcomes the elastic force of the return spring to attract the coil fixing element 512; the coil 511 is de-energized, the magnetic field disappears, the mortise lock 52 is separated from the coil fixing piece 512 under the elastic force recovery action of the return spring, and the mortise lock 52 is inserted into the decoupling gap and abutted against the piston rod 22, so that the decoupling gap disappears.

Alternatively, the connecting mechanism 4 comprises a top disc 41 and a connecting shaft 42, one end of the connecting shaft 42 is connected with a first end of the top disc 41, and the other end is connected with the brake actuator. In this embodiment, the brake actuator includes the master cylinder 6 and the second spring 61, one end of the master cylinder 6 is connected with the connecting shaft 42, the second spring 61 is sleeved on one end of the master cylinder 6 located in the housing 7, one end of the second spring 61 abuts against the first end of the top plate 41, and the other end abuts against the inner end face of the housing 7, so that after the master cylinder 6 completes braking, the top plate 41 can return to its original position under the elastic restoring force of the second spring 61.

In particular, the second end of the top disc 41 is provided with a central hole, which constitutes a decoupling gap. In the present exemplary embodiment, the diameter of the piston rod 22 is adapted to the diameter of the central bore, so that the insertion of the latch 52 into the decoupling gap can be brought into abutment with the piston rod 22. When the electronic brake normally works, the coil 511 is electrified, the mortise lock 52 is attracted with the coil fixing piece 512, a decoupling gap is formed between the piston rod 22 and the top disc 41, and the motor drive gear 32 drives the rack 31 to push the top disc 41 to realize the braking of the vehicle; when the electronic brake fails, the coil 511 loses power, the mortise lock 52 enters the decoupling gap under the restoring force of the elastic reset piece 53, and the piston rod 22 is abutted against the mortise lock 52 to push the top plate 41 to brake the vehicle.

Optionally, the second end of the top disk 41 is provided with a through hole 411 in a direction perpendicular to the axis of the top disk 41, and the decoupling mechanism 5 is provided in the through hole 411. Specifically, a first step surface and a second step surface are provided in the through hole 411, the coil fixing member 512 is provided on the first step surface, and the plug 52 can abut against the second step surface. Preferably, the mortise lock 52 is a stepped cylinder. When the coil 511 loses power, the large end of the latch 52 abuts against the second step surface, the small end of the latch 52 enters the decoupling gap, and the side surface of the latch 52 abuts against the piston rod 22 under the restoring force of the elastic restoring piece 53.

In another alternative embodiment of the present invention, the mortise lock 52 may also be configured as a right circular cylinder, and the through hole 411 is not provided with the second step surface. When the coil 511 is de-energized, the latch 52 is connected with the coil fixing member 512 through the elastic reset member 53, the latch 52 enters the decoupling gap to abut against the piston rod 22, and the piston rod 22 pushes the top plate 41 through the latch 52, so that the vehicle is braked.

The working process of the electronic brake system provided by the embodiment is as follows:

when the electronic brake works normally, the coil 511 is in a power-on state, and the mortise lock 52 is attracted with the coil fixing piece 512, so that a decoupling gap exists between the piston rod 22 and the top disc 41. The driver steps on the brake pedal, and the brake pedal pushes the pedal rod 1 and the piston rod 22 to move, and the piston rod 22 enters the decoupling gap due to the existence of the decoupling gap, so that the stepping force of the driver cannot act on the master cylinder 6, and the decoupling between the piston rod 22 and the master cylinder 6 is realized. The pedal stroke simulator senses the braking force applied to the pedal by the driver, the starting motor drives the gear 32 to drive the rack 31 to move, and the top disc 41 pushes the main cylinder 6 under the action of the rack 31 to generate the braking force so as to brake the vehicle.

When the electronic brake fails, the coil 511 is in a power-off state, the large end of the mortise lock 52 is seated on the second step surface, the small end of the mortise lock 52 extends into the decoupling gap, the driver steps on the brake pedal, the brake pedal pushes the piston rod 22 to move through the pedal rod 1, the piston rod 22 is abutted against the mortise lock 52 and is connected with the top disc 41 through the mortise lock 52, and then the master cylinder 6 is pushed to brake the vehicle. In the whole braking process, the driver does not need to tread on the idle stroke, the braking experience of the driver is improved, and potential safety hazards cannot be brought.

The embodiment also provides a vehicle comprising the electronic brake system. The vehicle provided by the embodiment adopts the electronic braking system, so that the vehicle can be braked in time when the electronic braking fails, and the braking safety of the vehicle is improved.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims

1. An electronic brake system comprises a transmission device, a connecting mechanism (4) and a brake actuating mechanism, wherein the transmission device comprises a first transmission mechanism (3) and a second transmission mechanism (2), the first transmission mechanism (3) is connected with a motor, and the brake actuating mechanism can be driven by the connecting mechanism (4); the brake actuating mechanism is characterized by further comprising a decoupling mechanism (5), wherein the decoupling mechanism (5) is arranged on the connecting mechanism (4), and the decoupling mechanism (5) is configured to be inserted into the decoupling gap after power failure, so that the second transmission mechanism (2) can drive the brake actuating mechanism through the connecting mechanism (4).

2. The electric brake system according to claim 1, characterized in that the decoupling mechanism (5) comprises a coil assembly (51) and a mortise lock (52), the coil assembly (51) being capable of inserting the mortise lock (52) into the decoupling gap to bring the second transmission mechanism (2) into abutment with the mortise lock (52).

3. The electric brake system according to claim 2, wherein the coil assembly (51) comprises a coil (511) and a coil holder (512), the coil (511) is disposed in the coil holder (512), the coil (511) is energized, and the coil holder (512) is engaged with the latch (52); the coil (511) is powered off, the coil fixing piece (512) is separated from the mortise lock (52), and the separated mortise lock (52) can be inserted into the decoupling gap.

4. An electric brake system according to claim 3, characterised in that the mortise lock (52) is of stepped cylindrical configuration.

5. Electronic braking system according to claim 3 or 4, characterized in that the decoupling mechanism (5) further comprises an elastic return member (53), the elastic return member (53) being connected at one end to the coil anchor (512) and at the other end to the mortise lock (52).

6. An electric brake system according to claim 4, characterized in that the connection mechanism (4) comprises a top disc (41) and a connection shaft (42), one end of the connection shaft (42) being connected with a first end of the top disc (41) and the other end being connected with the brake actuator.

7. Electronic braking system according to claim 6, characterized in that the second end of the top disc (41) is provided with a central hole, which constitutes the decoupling gap.

8. An electric brake system according to claim 7, characterized in that the second end of the top disc (41) is provided with a through hole (411) in a direction perpendicular to the axis of the top disc (41), the decoupling mechanism (5) being provided within the through hole (411).

9. The electric brake system according to claim 8, wherein a first step surface and a second step surface are provided in the through hole (411), the coil fixing member (512) is provided on the first step surface, and the mortise lock (52) is capable of abutting against the second step surface.

10. A vehicle characterized by comprising an electric brake system according to any one of claims 1 to 9.