CN214295898U - Brake pedal stroke sensor and new energy automobile - Google Patents
Brake pedal stroke sensor and new energy automobile Download PDFInfo
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- CN214295898U CN214295898U CN202022326389.2U CN202022326389U CN214295898U CN 214295898 U CN214295898 U CN 214295898U CN 202022326389 U CN202022326389 U CN 202022326389U CN 214295898 U CN214295898 U CN 214295898U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 24
- 230000033001 locomotion Effects 0.000 abstract description 5
- 238000011084 recovery Methods 0.000 description 7
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Abstract
The utility model discloses a brake pedal stroke sensor, including the sensor body, set up the sensor end cover on the sensor body and be used for transmitting the rotary motion from brake pedal extremely the power transmission device of the sensor center pin of sensor body, power transmission device include rotatable setting and be used for the input mechanism that contacts with the outer disc of footboard center pin, with sensor center pin connection's output mechanism, the hold-in range drive mechanism who is connected with input mechanism and output mechanism and be used for making the outer disc of input mechanism and sensor center pin keep the holding mechanism of state of contact. The utility model discloses a brake pedal stroke sensor through setting up input mechanism, output mechanism, synchronous belt drive mechanism and the cooperation of retaining mechanism, can improve output signal precision and new energy automobile energy recuperation efficiency. The utility model also discloses a new energy automobile.
Description
Technical Field
The utility model belongs to the technical field of automobile parts, specifically speaking, the utility model relates to a brake pedal stroke sensor and new energy automobile.
Background
With the development of the modern automotive industry, more and more enterprises are beginning to relate to electronic brake systems. The electronic brake system generally adopts an Iboost brake mode represented by Bosch company, and high-efficiency energy recovery directly influences the endurance mileage of the vehicle, can generate direct economic benefit and supports the energy recovery pedal stroke sensor signal to play a vital role.
For the recovery of braking energy, the greater capacity of energy recovery lies in the initial stage of braking, i.e. the front pedal travel, in particular the pedal braking space-time travel stage. The existing stroke sensors are all installed on a brake pedal and connected with a pedal arm through a lever, the movement of the pedal arm drives a sensor rod fork to rotate to generate a signal to send out, however, the sensor and the pedal arm slide relatively during connection movement, the shaking amount of a sensor driving rod is large, the accuracy of the output signal of the sensor is low during the initial stroke of the pedal, and the energy recovery efficiency of the new energy automobile is low. And the rotation coaxiality of the sensor and the pedal arm is required to be higher, and the consistency and assembly of the pedal product are indirectly required to be higher.
SUMMERY OF THE UTILITY MODEL
The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a brake pedal stroke sensor, the purpose improves output signal precision and new energy automobile energy recuperation efficiency.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the brake pedal stroke sensor comprises a sensor body, a sensor end cover arranged on the sensor body and a power transmission device used for transmitting the rotary motion from a brake pedal to a sensor central shaft of the sensor body, wherein the power transmission device comprises an input mechanism which is rotatably arranged and is used for being in contact with the outer circular surface of the pedal central shaft, an output mechanism connected with the sensor central shaft, a synchronous belt transmission mechanism connected with the input mechanism and the output mechanism and a holding mechanism used for keeping the input mechanism in a contact state with the outer circular surface of the sensor central shaft.
The input mechanism comprises a first friction wheel connected with the synchronous belt transmission mechanism and a wear-resistant layer arranged on the first friction wheel and contacted with the outer circular surface of the pedal center shaft.
The holding mechanism comprises a top rod connected with the input mechanism and a return spring applying elastic acting force to the top rod, and the top rod is rotatably connected with the sensor end cover.
The return spring is a torsion spring.
The output mechanism comprises a second friction wheel connected with the synchronous belt transmission mechanism and a third friction wheel connected with the central shaft of the sensor, and the outer circular surface of the second friction wheel is in contact with the outer circular surface of the third friction wheel.
The diameter of the second friction wheel is larger than the diameter of the third friction wheel.
Synchronous belt drive mechanism include with the driving gear that input mechanism connects, with driven gear, the intermediate gear that output mechanism connects and with driving gear, driven gear and intermediate gear engaged with hold-in range mutually, the intermediate gear be rotatable set up in inside the sensor end cover.
The intermediate gear is connected with the rotating shaft, the rotating shaft is installed on the limiting part, the limiting part is provided with a limiting groove for inserting the rotating shaft, and the limiting groove is an arc-shaped groove.
The rotating shaft is connected with a tensioning spring, and the tensioning spring exerts elastic acting force on the rotating shaft so as to control the tensioning force of the synchronous belt.
The utility model also provides a new energy automobile, including foretell brake pedal travel sensor.
The utility model discloses a brake pedal stroke sensor through setting up input mechanism, output mechanism, synchronous belt drive mechanism and hold-in range cooperation of mechanism, can improve output signal precision and new energy automobile energy recovery efficiency, and the structure is reliable moreover, and the assembly is simple, and is lower to brake pedal's preparation precision and assembly uniformity requirement.
Drawings
Fig. 1 is a schematic structural diagram of a brake pedal travel sensor according to the present invention;
fig. 2 is a front view of the brake pedal stroke sensor of the present invention;
FIG. 3 is a schematic view of the connection of the power transmission device to the sensor head;
FIG. 4 is a schematic structural view of the power transmission device;
FIG. 5 is a schematic view of the connection of the sensor to the brake pedal;
the labels in the above figures are: 1. a brake pedal; 2. a sensor body; 3. positioning pins; 4. mounting holes; 5. a sleeve; 6. a wire harness interface; 7. a sensor end cap; 8. a first friction wheel; 9. a top rod; 10. a synchronous belt; 11. a third friction wheel; 12. a second friction wheel; 13. tensioning the spring; 14. a limiting groove; 15. a return spring; 16. an intermediate gear; 17. a driving gear; 18. a driven gear; 19. a sensor central axis.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings, for the purpose of helping those skilled in the art to understand more completely, accurately and deeply the conception and technical solution of the present invention, and to facilitate its implementation.
It should be noted that, in the following embodiments, the terms "first", "second" and "third" do not denote absolute differences in structure and/or function, nor do they denote a sequential order of execution, but rather are used for convenience of description.
As shown in fig. 1 to 5, the utility model provides a brake pedal stroke sensor, including sensor body 2, set up sensor end cover 7 on sensor body 2 and be used for transmitting the power transmission device of the sensor center pin 19 of sensor body 2 with the rotary motion from brake pedal, power transmission device includes rotatable setting and is used for the input mechanism that contacts with the outer disc of pedal center pin, the output mechanism who is connected with sensor center pin 19, the hold-in range drive mechanism who is connected with input mechanism and output mechanism and be used for making input mechanism and the outer disc of sensor center pin 19 keep the holding mechanism of the state of contact.
Specifically, as shown in fig. 1 to 5, a brake pedal is rotatably connected with a bracket through a pedal center shaft, the brake pedal is fixedly connected with the pedal center shaft, the bracket is fixedly connected with a new energy automobile body, a sensor body 2 is fixedly installed on the bracket, the sensor body 2 is used for outputting a signal to a control system, and the sensor body 2 is electrically connected with the control system. Be provided with the pencil interface 6 of being connected with the cable on the sensor body 2, pencil interface 6 is equipped with 3 stitches, and pencil interface 6 has waterproof dustproof, mistake proofing dress locate function. Sensor body 2 is cylinder type structure, and sensor body 2 passes through the bolt and installs on the support, and sensor body 2's tip is provided with sleeve pipe 5, and sleeve pipe 5 has the mounting hole 4 that lets the bolt pass, and sleeve pipe 5's material is the metal. The sensor end cap 7 is fixedly connected with the other end of the sensor body 2, and the sensor end cap 7 and the sleeve 5 are arranged at two opposite ends of the sensor body 2. The sensor cover 7 is provided with an opening through which the power transmission device passes, the input mechanism being located outside the sensor cover 7, and the output mechanism being located inside the sensor cover 7.
As shown in fig. 1 and 2, the sensor body 2 is provided with a positioning pin 3, the bracket is provided with a positioning hole into which the positioning pin 3 is inserted, the positioning pin 3 and the positioning hole are matched in shape, and the accurate mounting position of the sensor bracket is ensured by matching the positioning pin 3 and the positioning hole. The positioning pin 3 is fixedly connected with one end of the sensor body 2, and the positioning pin 3 and the sleeve 5 are located at the same end of the sensor body 2.
As shown in fig. 1 to 5, the input mechanism includes a first friction wheel 8 connected to the synchronous belt transmission mechanism and a wear-resistant layer disposed on the first friction wheel 8 and contacting with the outer circumferential surface of the pedal center shaft, the wear-resistant layer is made of rubber, so as to increase the friction coefficient with the pedal center shaft and ensure timely and reliable rotation. The first friction wheel 8 is a cylinder, the first friction wheel 8 is located below the pedal central shaft, the axis of the first friction wheel 8 is parallel to the axis of the pedal central shaft, the outer circular surface of the pedal central shaft is a cylindrical surface, the axis of the outer circular surface of the pedal central shaft is also the axis of the pedal central shaft, and the wear-resistant layer is arranged along the whole outer circular surface of the first friction wheel 8. When brake pedal rotated, brake pedal can drive the footboard center pin and rotate, produce rolling friction between input mechanism and the footboard center pin, the footboard center pin drives input mechanism and rotates, input mechanism passes through synchronous belt drive mechanism and drives output mechanism synchronous rotation, and then realizes the transmission of rotational force, output mechanism drives sensor center pin 19 synchronous rotation for 2 output signal of sensor body, stroke sensor senses that brake pedal is trampled.
As shown in fig. 1 to 5, the holding mechanism includes a jack 9 connected to the input mechanism and a return spring 15 that applies an elastic force to the jack 9, and the jack 9 is rotatably connected to the sensor cover 7. The holding mechanism provides elastic support for the input mechanism, the ejector rod 9 has a certain length, and the length direction of the ejector rod 9 is perpendicular to the axis of the first friction wheel 8. One end of the ejector rod 9 in the length direction is rotatably connected with the sensor end cover 7, the other end of the ejector rod 9 in the length direction is rotatably connected with the first friction wheel 8 at the center of the first friction wheel 8, and the return spring 15 is a torsion spring. The return spring 15 exerts the elastic acting force which enables the ejector rod 9 to rotate upwards on the ejector rod, so that the input mechanism always has the tendency of moving upwards, the automatic resetting of the input mechanism can be realized after the brake pedal is reset, the input mechanism can be always kept in a contact state with the outer circular surface of the pedal center shaft, the rotation angle of the sensor center shaft 19 can be accurately controlled, the reliability is good, the precision of output signals of the stroke sensor can be improved, and finally the energy recovery efficiency of the new energy automobile can be improved.
As shown in fig. 1 to 5, the output mechanism includes a second friction wheel 12 connected to the synchronous belt drive mechanism and a third friction wheel 11 connected to the sensor center shaft 19, and an outer circumferential surface of the second friction wheel 12 is in contact with an outer circumferential surface of the third friction wheel 11. The diameters of the first friction wheel 8 and the second friction wheel 12 are both larger than the diameter of the third friction wheel 11, the second friction wheel 12 and the third friction wheel 11 are both cylinders, the axes of the second friction wheel 12 and the third friction wheel 11 are parallel to the axis of the first friction wheel 8, and the third friction wheel 11 is coaxially and fixedly connected with the central shaft 19 of the sensor. The outer circular surface of the second friction wheel 12 and the outer circular surface of the third friction wheel 11 are both cylindrical surfaces, the axis of the outer circular surface of the second friction wheel 12 is also the axis of the second friction wheel 12, and the axis of the outer circular surface of the third friction wheel 11 is also the axis of the third friction wheel 11. When the second friction wheel 12 rotates, rolling friction is generated between the second friction wheel 12 and the third friction wheel 11, the second friction wheel 12 can drive the third friction wheel 11 to synchronously rotate, and the third friction wheel 11 drives the sensor central shaft 19 to synchronously rotate.
As shown in fig. 1 to 5, the synchronous belt transmission mechanism includes a driving gear 17 connected to the input mechanism, a driven gear 18 connected to the output mechanism, an intermediate gear 16, and a synchronous belt engaged with the driving gear 17, the driven gear 18, and the intermediate gear 16 is rotatably disposed inside the sensor end cap 7. The driving gear 17 and the first friction wheel 8 are coaxially and fixedly connected, the diameter of the driving gear 17 is smaller than that of the first friction wheel 8, the driven gear 18 and the second friction wheel 12 are coaxially and fixedly connected, and the diameter of the driven gear 18 is smaller than that of the second friction wheel 12. The synchronous belt is sleeved on the driving gear 17, the driven gear 18 and the intermediate gear 16, the driving gear 17, the driven gear 18 and the intermediate gear 16 are distributed at three points, the intermediate gear 16 is located below the driven gear 18, and the axes of the driving gear 17, the driven gear 18 and the intermediate gear 16 are parallel. When the synchronous belt transmission mechanism operates, the tooth of the synchronous belt is meshed with the tooth groove of the gear to transmit power. The synchronous belt transmission mechanism has the advantages of accurate transmission ratio, no slip, capability of obtaining constant speed ratio, stable transmission and low noise, and is beneficial to improving the accuracy of output signals of the stroke sensor.
As shown in fig. 1 to 5, the intermediate gear 16 is connected to the rotating shaft, the rotating shaft is installed on the limiting member, the limiting member has a limiting groove 14 for inserting the rotating shaft, the limiting groove 14 is an arc-shaped groove, and the radian of the limiting groove 14 is less than 180 degrees. The intermediate gear 16 and the rotating shaft are coaxially and fixedly connected, the two limiting pieces are arranged, the intermediate gear 16 is located between the two limiting pieces, the axes of the limiting grooves 14 are parallel to the axis of the rotating shaft, the two ends of the rotating shaft are respectively inserted into the limiting grooves 14 of the two limiting pieces, the limiting pieces play a role in guiding the intermediate gear 16, one of the limiting pieces is fixedly arranged on the sensor end cover 7, and the other limiting piece is fixedly arranged on the sensor body 2. In the process of lifting the input mechanism, the rotating shaft slides along the limiting groove 14. The rotating shaft is connected with a tension spring 13, and the tension spring 13 applies elastic acting force to the rotating shaft so as to control the tension of the synchronous belt. The tension spring 13 is located between the two limiting parts, the tension spring 13 pre-tensions the intermediate gear 16, and the intermediate gear 16 is clamped in the limiting groove 14 through the rotating shaft, so that the power transmission reliability is ensured under the action of the spring force. And structural design is reasonable, the installation of the sensor of being convenient for.
The brake pedal stroke sensor with the structure has the following advantages:
1. arranging: by adopting the utility model, only fixed points are needed to be provided on the vertical plate, no parts are needed to be added at each position, no rotating radius is needed to be considered, and the arrangement space, the weight of single pieces and the cost are saved;
2. assembling: by adopting the utility model, the problems of assembly technique, product coaxiality and the like do not need to be considered, and the consistency of product output is higher;
the utility model also provides a new energy automobile, brake pedal stroke sensor including above-mentioned structure. The specific structure of the brake pedal stroke sensor can refer to fig. 1 to 5, and is not described herein again. Because the utility model discloses a kind of new energy automobile includes the brake pedal travel sensor in above-mentioned embodiment, so it has all advantages of above-mentioned brake pedal travel sensor.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.
Claims (10)
1. Brake pedal stroke sensor, including the sensor body with set up the sensor end cover on the sensor body, its characterized in that: the power transmission device comprises an input mechanism which is rotatably arranged and is used for being in contact with the outer circular surface of the pedal center shaft, an output mechanism connected with the sensor center shaft, a synchronous belt transmission mechanism connected with the input mechanism and the output mechanism, and a holding mechanism used for keeping the input mechanism in a contact state with the outer circular surface of the sensor center shaft.
2. The brake pedal stroke sensor according to claim 1, wherein: the input mechanism comprises a first friction wheel connected with the synchronous belt transmission mechanism and a wear-resistant layer arranged on the first friction wheel and contacted with the outer circular surface of the pedal center shaft.
3. The brake pedal stroke sensor according to claim 1, wherein: the holding mechanism comprises a top rod connected with the input mechanism and a return spring applying elastic acting force to the top rod, and the top rod is rotatably connected with the sensor end cover.
4. The brake pedal stroke sensor according to claim 3, wherein: the return spring is a torsion spring.
5. The brake pedal stroke sensor according to any one of claims 1 to 4, wherein: the output mechanism comprises a second friction wheel connected with the synchronous belt transmission mechanism and a third friction wheel connected with the central shaft of the sensor, and the outer circular surface of the second friction wheel is in contact with the outer circular surface of the third friction wheel.
6. The brake pedal stroke sensor according to claim 5, wherein: the diameter of the second friction wheel is larger than the diameter of the third friction wheel.
7. The brake pedal stroke sensor according to any one of claims 1 to 4, wherein: synchronous belt drive mechanism include with the driving gear that input mechanism connects, with driven gear, the intermediate gear that output mechanism connects and with driving gear, driven gear and intermediate gear engaged with hold-in range mutually, the intermediate gear be rotatable set up in inside the sensor end cover.
8. The brake pedal stroke sensor according to claim 7, wherein: the intermediate gear is connected with the rotating shaft, the rotating shaft is installed on the limiting part, the limiting part is provided with a limiting groove for inserting the rotating shaft, and the limiting groove is an arc-shaped groove.
9. The brake pedal stroke sensor according to claim 8, wherein: the rotating shaft is connected with a tensioning spring, and the tensioning spring exerts elastic acting force on the rotating shaft so as to control the tensioning force of the synchronous belt.
10. New energy automobile, its characterized in that: including a brake pedal stroke sensor as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022326389.2U CN214295898U (en) | 2020-10-19 | 2020-10-19 | Brake pedal stroke sensor and new energy automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022326389.2U CN214295898U (en) | 2020-10-19 | 2020-10-19 | Brake pedal stroke sensor and new energy automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214295898U true CN214295898U (en) | 2021-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022326389.2U Active CN214295898U (en) | 2020-10-19 | 2020-10-19 | Brake pedal stroke sensor and new energy automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214295898U (en) |
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2020
- 2020-10-19 CN CN202022326389.2U patent/CN214295898U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240422 Address after: 241000 No. 8, Changchun Road, Wuhu economic and Technological Development Zone, Anhui, China Patentee after: CHERY AUTOMOBILE Co.,Ltd. Country or region after: China Address before: 241000 Building 8, science and Technology Industrial Park, 717 Zhongshan South Road, Yijiang District, Wuhu City, Anhui Province Patentee before: Chery Commercial Vehicles (Anhui) Co., Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |