CN220374494U

CN220374494U - Electronic parking switch

Info

Publication number: CN220374494U
Application number: CN202322061602.5U
Authority: CN
Inventors: 姚翠平; 程翠锋; 王光宁
Original assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Current assignee: China National Heavy Duty Truck Group Jinan Power Co Ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-01-23
Anticipated expiration: 2033-08-02

Abstract

The utility model relates to the technical field of automobile braking, in particular to an electronic parking switch, which comprises an upper shell, wherein the upper shell is rotationally connected with a parking button, the parking button is in sliding connection with a rocker, the rocker can be connected with a contact for controlling parking after being tilted, a pressing piece and an elastic piece are arranged between the parking button and the upper shell, the pressing piece is rotated by the parking button to press the elastic piece and store restoring force, and the elastic piece drives the pressing piece to help the parking button to reset. The utility model solves the problems of hard hand feeling of the electronic parking switch and unclear action command caused by lack of linkage between the reset device and the contact, and the electronic parking switch has more accurate operation and softer hand feeling.

Description

Electronic parking switch

Technical Field

The utility model relates to the technical field of automobile braking, in particular to an electronic parking switch.

Background

The electronic parking is EPB for short, and is a technology for realizing automobile braking by controlling a brake through an electric signal. In the prior art, an electronic parking switch is installed in a cab cabin to replace a traditional mechanical hand brake.

The Chinese patent No. 21606994U discloses an electronic parking switch, which is provided with a parking button, a start-stop button and a base, wherein the base is provided with a contact, a V-shaped abutting groove is arranged below the parking button, a tubular column is arranged at the corresponding position of the V-shaped groove on the base, a jacking block is arranged in the tubular column, the jacking block is in an isosceles triangle shape, springs are arranged at the bottoms of the jacking block and the tubular column, the parking button is connected with the contact through a pressing rod, then the switch control is realized through pulling and pressing of the parking button, and finally reset is performed through the springs. The parking button of above-mentioned scheme links to each other with contact and resetting means directly, and the operation feel is hard, simultaneously, lacks the linkage between resetting means and the contact, can lead to the action of pulling down of parking button and the mutual influence of action that resets, and then causes the action command unclear, can't accomplish operator's intention.

Disclosure of Invention

In order to solve the problems, the utility model provides the electronic parking switch, which solves the problems of hard hand feeling of the electronic parking switch and unclear action command caused by lack of linkage between the reset device and the contact.

The electronic parking switch comprises an upper shell, a lower shell and a parking button which is respectively and rotatably connected with the upper shell and the lower shell, wherein a functional cavity is formed between the parking button and the upper shell, a jacking pin hole connected with the upper shell and a pressing piece connected with the parking button are arranged in a vertical position of the functional cavity, an elastic piece is arranged in the jacking pin hole, and the elastic piece is exposed out of the jacking pin hole; the pressing piece is provided with a front arm and a rear arm, the parking button can drive the front arm to press the elastic piece backwards under the action of pressing, or drive the rear arm to press the elastic piece forwards under the action of pulling; the electronic parking switch is characterized in that a module for placing a contact and a rocker for contacting the contact are arranged inside the lower shell, the lower end and the upper end of the rocker are respectively connected with the module and the parking button in a rotating mode, and the parking button drives the rocker to rotate backwards under the action of being pressed, or drives the rocker to rotate forwards under the action of being pulled, so that the electronic parking switch is turned on or turned off.

Further, the lower housing is provided with a limiting body which can be matched with the parking button when the parking button rotates forwards under the action of being pressed;

the upper shell is provided with a limiting groove which can be abutted against the rear side of the parking button when the parking button rotates backwards under tension action.

Further, the inner sides of the front arm and the rear arm are provided with bevel edges, and the top pin hole is positioned at the middle of the front arm and the rear arm.

Further, the elastic member includes a top pin shaft and a spring positioned below the top pin shaft, and the top pin shaft portion exposes the top pin hole.

Further, the top of the jacking pin shaft is arc-shaped.

Further, the upper shell is provided with a start-stop button at the rear side of the parking button; the start-stop button is connected with a sliding block positioned in the upper shell, the sliding block is rectangular, and guide grooves are formed in four corners of the sliding block, so that the start-stop button can slide up and down in the upper shell.

Further, an elastic device and a start-stop contact are arranged at the bottom of the sliding block, and the start-stop button drives the sliding block to move downwards and upwards under the continuous twice pressed actions so as to control the start-stop contact to be opened or closed.

Due to the adoption of the technical scheme, the beneficial effects obtained by the application are as follows:

1. the pressing piece, the elastic piece and the wane are connected when the parking button is pulled and pressed, so that linkage is formed between the elastic piece and the wane, and the operation process of pulling and pressing the parking button is more accurate. Specifically, the parking button is made to be an intermediary between the contact and the contact by providing a rocker: when the pressing piece is pressed downwards or pulled upwards, the elastic force of the elastic piece to the front arm or the rear arm of the pressing piece is transmitted to the rocker through the parking button, so that the rotation of the rocker is easier to control, and an operator can control the parking button more accurately.

2. The setting of wane has avoided directly, the contact perpendicularly through the guide arm between parking button and the contact, thereby the parking button rotates the mode that drives wane rotation control contact switch milder, and the operation feel is better, also helps improving the life of contact. Specifically, the rocker contacts the contact in a rotating manner, the contact is gradually pressed down, the contact stress is more linear, the impact is smaller, and therefore the operation is milder after the feedback to the parking button.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a schematic structural diagram of an electronic parking switch provided in the present application;

FIG. 2 is a schematic view of the internal structure of the parking button in the present application under a pressing action;

FIG. 3 is a schematic view of the internal structure of the parking button in tension;

fig. 4 is a schematic diagram of an explosion structure of an electronic parking switch provided in the present application;

fig. 5 is a schematic cross-sectional view of an electronic parking switch provided in the present application;

1. an upper housing; 2. a lower housing; 3. a park button; 4. a functional cavity; 5. a jack hole; 6. a pressing member; 7. a forearm; 8. a rear arm; 9. an elastic member; 10. a contact; 11. a module; 12. a seesaw; 13. a limiting body; 14. a limit groove; 15. a top pin shaft; 16. a spring; 17. a start-stop button; 18. a slide block; 19. a guide groove; 20. a start-stop contact; 21. a circuit board; 22. a conductive rubber; 23. a shifting fork; 24. an elastic device; 25. an indicator light; 26. and a light guide assembly.

Detailed Description

As shown in fig. 1 to 5, an electronic parking switch comprises an upper casing 1, a lower casing 2 and a parking button 3 rotatably connected with the upper casing 1 and the lower casing 2 respectively, wherein a functional cavity 4 is formed between the parking button 3 and the upper casing 1, a top pin hole 5 connected with the upper casing 1 and a pressing piece 6 connected with the parking button 3 are arranged in a vertical position of the functional cavity 4, an elastic piece 9 is arranged in the top pin hole 5, and the elastic piece 9 is exposed out of the top pin hole 5; the pressing piece 6 is provided with a front arm 7 and a rear arm 8, and the parking button 3 can drive the front arm 7 to press the elastic piece 9 backwards under the action of pressing, or drive the rear arm 8 to press the elastic piece 9 forwards under the action of pulling; the lower casing 2 is internally provided with a module 11 for placing the contact 10 and a rocker 12 for contacting the contact 10, the lower end and the upper end of the rocker 12 are respectively in rotary connection with the module 11 and the parking button 3, and the parking button 3 drives the rocker 12 to rotate backwards under the action of being pressed, or drives the rocker 12 to rotate forwards under the action of being pulled, so that the electronic parking switch is opened or closed.

The electronic parking switch should avoid the mechanical transmission structure to directly or indirectly contact with the contact 10 under the buffer-free measure in the use process, so as to prevent the unclear action command caused by excessively hard operation hand feeling of the electronic parking switch. The front end of the parking button 3 protrudes downwards in the application so as to facilitate the pulling and pressing actions of the parking button 3. The parking button 3 side is equipped with the trompil, and the trompil passes through a axle and is connected with last casing 1, and simultaneously, parking button 3 both sides have the shift fork 23 that stretches out its bottom, and shift fork 23 links to each other with wane 12 upper end, and wane 12 lower extreme links to each other with module 11 again. Therefore, the transmission structure of the parking button 3 realizes the buffering effect by simultaneously rotating the parking button 3 to connect the shell and the seesaw 12, so that the pulling and pressing hand feeling is milder.

As a preferred embodiment of the present application, as shown in fig. 2 to 4, the top of the rocker 12 is hollowed out, and the bottom is connected to the module 11 by a V-shaped connector. The module 11 has two front and rear contacts 10 for controlling the parking function, and there is a misalignment between the two contacts 10. When the parking button 3 is pressed, the parking button 3 rotates forward and downward relative to the upper housing 1, and then drives the upper end of the fork 23 to move forward, and the rear end moves backward, and for balance maintenance, the rocker 12 connected with the fork 23 rotates downward at the rear end and is communicated with the contact 10 at the rear. When the parking button 3 is pulled, the rotation direction of the above parts is opposite to that of the pressed state.

As a preferred embodiment of the present application, the elastic member 9 is forced to be compressed by the rotation of the pressing member 6, and the automatic rebound of the parking button 3 is achieved by the action of the restoring force of the elastic member 9 on the parking button 3.

In a specific example of the above embodiment, the pressing member 6 has a front arm 7 and a rear arm 8, and the front arm 7 and the rear arm 8 each have an inclined surface, and a certain included angle space is formed between the front arm 7 and the rear arm 8, and a position right below the included angle space corresponds to the jack hole 5 in the upper housing 1. An elastic piece 9 consisting of a spring 16 and a jacking pin shaft 15 is arranged in the jacking pin hole 5, and when the parking button 3 is pulled, the rear arm 8 rotates forwards; when the front arm 7 rotates backwards under pressure, the inclined surface of the front arm 7 or the inclined surface of the rear arm 8 can be contacted with the part of the ejector pin shaft 15, which is exposed out of the ejector pin hole 5, and the spring 16 is pressed down along with the gradual increase of the rotation angle, so that a part of restoring force is stored for the elastic piece 9, and the position is restored after the pulling force or the pressing force of the parking button 3 is removed.

In a preferred embodiment, the top of the top pin 15 is curved to reduce contact resistance between the top pin 15 and the inclined surface, and the curved top surface also prevents jamming and makes the operation smoother.

As a preferred embodiment of the present application, the rear side of the parking button 3 is provided with a start-stop button 17 for controlling automatic start-stop, the start-stop button 17 is connected with a slide block 18, and the slide block 18 is slidably connected with the upper housing 1. The bottom of the sliding block 18 is provided with an elastic device 24 and a start-stop contact 20, and the elastic device 24 is used as the prior art, and the sliding block 18 can be controlled to be contacted with and separated from the start-stop contact 20 by continuously pressing the start-stop switch twice so as to realize the start or stop of an automatic start-stop function.

In a specific example of the above embodiment, the front side of the start-stop button 17 is provided with a limiting groove 14 that can be matched with the parking button 3, and when the parking button 3 is pulled to rotate to a certain angle, the rear part of the parking button abuts against the limiting groove 14, and the limiting groove 14 limits the parking button 3 from rotating backward.

As a preferred embodiment of the above embodiment, as shown in fig. 1, the front side of the lower housing 2 is further provided with a limiting body 13, and when the parking button 3 rotates downward to a certain angle, it cooperates with the limiting body 13, so as to effectively prevent the contact 10 from being damaged due to excessive extrusion force of the rocker 12 on the contact 10.

As a preferred embodiment of the application, a circuit board 21 is integrated in the module 11, the surface of the circuit board 21 is covered with conductive rubber 22, the conductive rubber 22 is connected with the contact 10, and the switch indication is performed through an operation indicator lamp 25, and then the switch indication is displayed on the surface of the parking button 3 through a light guide component 26 positioned in the functional cavity 4.

The non-mentioned places in the application can be realized by adopting or referring to the prior art.

In this specification, each embodiment is described in a progressive manner, and similar parts of each embodiment are referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations will be apparent to those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. The electronic parking switch comprises an upper shell, a lower shell and a parking button which is respectively and rotatably connected with the upper shell and the lower shell, wherein a functional cavity is formed between the parking button and the upper shell, a jacking pin hole connected with the upper shell and a pressing piece connected with the parking button are arranged in a vertical position of the functional cavity, an elastic piece is arranged in the jacking pin hole, and the elastic piece is exposed out of the jacking pin hole; the pressing piece is provided with a front arm and a rear arm, the parking button can drive the front arm to press the elastic piece backwards under the action of pressing, or drive the rear arm to press the elastic piece forwards under the action of pulling; it is characterized in that the method comprises the steps of,

the electronic parking switch is characterized in that a module for placing a contact and a rocker for contacting the contact are arranged inside the lower shell, the lower end and the upper end of the rocker are respectively connected with the module and the parking button in a rotating mode, and the parking button drives the rocker to rotate backwards under the action of being pressed, or drives the rocker to rotate forwards under the action of being pulled, so that the electronic parking switch is turned on or turned off.

2. An electronic park switch as claimed in claim 1, wherein,

the lower shell is provided with a limiting body which can be matched with the parking button when the parking button rotates forwards under the action of being pressed;

3. An electronic park switch as claimed in claim 1, wherein,

the inner sides of the front arm and the rear arm are respectively provided with a bevel edge, and the top pin hole is positioned at the middle of the front arm and the rear arm.

4. An electronic park switch as claimed in claim 3, wherein,

the elastic piece comprises an upper top pin shaft and a spring positioned below the top pin shaft, and the top pin shaft part is exposed out of the top pin hole.

5. An electronic park switch as claimed in claim 4, wherein,

the top of the jacking pin shaft is arc-shaped.

6. An electronic park switch as claimed in claim 1, wherein,

the upper shell is provided with a start-stop button at the rear side of the parking button; the start-stop button is connected with a sliding block positioned in the upper shell, the sliding block is rectangular, and guide grooves are formed in four corners of the sliding block, so that the start-stop button can slide up and down in the upper shell.

7. An electronic park switch as claimed in claim 6, wherein,

the bottom of the sliding block is provided with an elastic device and a start-stop contact, and the start-stop button drives the sliding block to displace downwards and upwards under the continuous twice pressed actions so as to control the start-stop contact to open or close.