CN219328598U

CN219328598U - Optical recognition device for rotating direction of steering wheel

Info

Publication number: CN219328598U
Application number: CN202320699824.7U
Authority: CN
Inventors: 涂星
Original assignee: Shenzhen Yisen Technology Co ltd
Current assignee: Shenzhen Yisen Technology Co ltd
Priority date: 2023-04-03
Filing date: 2023-04-03
Publication date: 2023-07-11
Anticipated expiration: 2033-04-03

Abstract

The utility model discloses an optical identification device for the rotation direction of a steering wheel, which comprises a PCB (printed circuit board), a light reflecting rotary table and a light shielding plate, wherein a plurality of groups of V-shaped light reflecting surfaces are distributed on the bottom surface of the light reflecting rotary table in a circumferential array mode, light holes corresponding to the V-shaped light reflecting surfaces are formed in the light shielding plate, and a light emitting element, a first photosensitive element and a second photosensitive element which are used for receiving light signals are arranged on the PCB below the light holes. Compared with the prior art, the utility model has the advantages that: according to the utility model, the bottom surface of the reflective turntable is provided with the circumferential array type V-shaped reflective surface, so that light can be sequentially reflected to the first photosensitive element and the second photosensitive element, and the rotating direction, the rotating amplitude and the rotating speed of the reflective turntable can be identified, and the reflective turntable has reasonable and ingenious structural design and low manufacturing cost.

Description

Optical recognition device for rotating direction of steering wheel

Technical Field

The present utility model relates to an optical recognition device, and more particularly, to an optical recognition device for rotating a steering wheel.

Background

The existing rotary optical identification device is relatively complex in structure, high in manufacturing cost and unreasonable in design, even the aim of the utility model cannot be achieved, for example, the utility model patent with the name of a handle optical encoder is disclosed in Chinese patent publication No. CN 216361600U, publication No. 2022, no. 04 and No. 22, the utility model patent with the name of the handle optical encoder, which consists of an encoder mechanical unit and a photoelectric unit, wherein the encoder mechanical unit comprises a handle and a mounting seat, the photoelectric unit is a PCB (printed circuit board) with an optical module, the optical module comprises a light-emitting element and a photosensitive element, a light-blocking rotary disc capable of freely rotating in the mounting seat is arranged in the mounting seat, the handle is arranged on the mounting seat in a penetrating manner and is in transmission connection with the light-blocking rotary disc, the bottom of the light-blocking rotary disc is provided with a light path module, the mounting seat is combined with the PCB through a fixing frame, and the fixing frame is provided with a light hole corresponding to the optical module on the PCB. However, the specific structure of the optical path module (reflecting sheet) is not disclosed, and according to the specification and drawing, the optical path module (reflecting sheet) is a horizontal plane, the technical scheme is incomplete, the aim of the utility model is obviously not achieved, and the structure of each component part is relatively complex, the assembly is troublesome, and the overall manufacturing cost is relatively high. Therefore, developing an optical recognition device for rotating a steering wheel in a direction is a problem to be solved by those skilled in the art.

Disclosure of Invention

The utility model aims to solve the defects and provides an optical identification device for the rotation direction of a steering wheel.

The above object of the present utility model is achieved by the following technical solutions: the utility model provides an optical recognition device of steering wheel rotation direction, includes PCB board, reflection of light carousel and light screen, its characterized in that: the light-reflecting rotating plate is characterized in that a plurality of groups of V-shaped reflecting surfaces are distributed on the bottom surface of the light-reflecting rotating plate in a circumferential array mode, light holes corresponding to the V-shaped reflecting surfaces are formed in the light shielding plate, and a light-emitting element, a first photosensitive element and a second photosensitive element which are used for receiving light signals are arranged on the PCB below the light holes.

Further, the V-shaped reflective surface includes a first reflective surface and a second reflective surface, and light rays passing through the first reflective surface are reflected to the first photosensitive element, and light rays passing through the second reflective surface are reflected to the second photosensitive element.

Further, the reflective turntable is connected with a rotating shaft.

Further, a light barrier for preventing light interference is arranged between the light emitting element and the two photosensitive elements on the PCB.

Further, the optical recognition device is encapsulated in a housing.

Further, the casing includes main casing, bottom and upper cover, the main casing is the tube-shape, and the inner wall is equipped with PCB board installation position and light screen installation position to compress tightly fixedly through the bottom, be equipped with the interval space between PCB board and the light screen, the reflection of light carousel is installed in the main casing on the light screen, and seals through the upper cover, has the clearance between upper cover and the reflection of light carousel, makes reflection of light carousel can free rotation.

Further, a center bulge is arranged at the center of the bottom surface of the reflective turntable, and a groove or a through hole embedded in the center bulge is arranged at the center of the light shielding plate.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the bottom surface of the reflective turntable is provided with the circumferential array type V-shaped reflective surface, so that light can be sequentially reflected to the first photosensitive element and the second photosensitive element, and the rotating direction, the rotating amplitude and the rotating speed of the reflective turntable can be identified, and the reflective turntable has reasonable and ingenious structural design and low manufacturing cost.

Drawings

Fig. 1 is a schematic view of the bottom side perspective structure of the present utility model.

Fig. 2 is a schematic top perspective view of the present utility model.

Fig. 3 is a schematic structural view of a reflective turntable connected to a rotating shaft.

Fig. 4 is a schematic view of an exploded top side of the package of the present utility model.

Fig. 5 is a schematic view of an exploded bottom side of the package of the present utility model.

Fig. 6 is a schematic view of the appearance structure of the package in the housing of the present utility model.

Fig. 7 is a schematic diagram of the working principle of the present utility model.

Detailed Description

The utility model is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, an optical recognition device for rotating a steering wheel in a direction comprises a PCB board 1, a reflective turntable 2 and a light shielding plate 3, wherein a plurality of groups of V-shaped reflective surfaces 5 are distributed on the bottom surface of the reflective turntable 2 in a circumferential array, light holes 6 corresponding to the V-shaped reflective surfaces 5 are formed in the light shielding plate 3, a light emitting element 7, a first photosensitive element 8 and a second photosensitive element 9 for receiving light signals are arranged on the PCB board 1 below the light holes 6, the V-shaped reflective surfaces 5 comprise a first reflective surface 11 and a second reflective surface 12, light rays passing through the first reflective surface 11 are reflected to the first photosensitive element 8, and light rays passing through the second reflective surface 12 are reflected to the second photosensitive element 9.

As shown in fig. 3, for convenience of docking with a rotating handle or a steering wheel, the reflective turntable 2 is connected with a rotating shaft 4, and the rotating shaft 4 is provided with gear teeth 401.

As shown in fig. 1, in order to prevent light interference at the side of the light emitting element 7, a light blocking plate 10 is disposed between the light emitting element 7 and the two photosensitive elements on the PCB board 1.

As shown in fig. 4, 5 and 6, for easy production and assembly, the optical recognition device is encapsulated in a housing, the housing comprises a main housing 13, a bottom cover 14 and an upper cover 15, the main housing 13 is cylindrical, a PCB board mounting position 16 and a light shielding board mounting position 17 are arranged on the inner wall of the main housing and are pressed and fixed by the bottom cover 14, a space 18 is arranged between the PCB board 1 and the light shielding board 3, the light reflecting turntable 2 is mounted in the main housing 13 above the light shielding board 3 and is sealed by the upper cover 15, a gap is reserved between the upper cover 15 and the light reflecting turntable 2, so that the light reflecting turntable 2 can rotate freely, a central protrusion 19 is arranged at the center of the bottom surface of the light reflecting turntable 2, and a groove or through hole 20 embedded in the central protrusion 19 is arranged at the center of the light shielding board 3.

When the rotary handle/steering wheel is driven to rotate, the reflective turntable 2 rotates, and when the rotary handle/steering wheel rotates clockwise, as shown in fig. 7, the first reflective surface 11 passes through the light hole 6 first, the second reflective surface 12 passes through the light hole 6, and the light is reflected to the first photosensitive element 8 and the second photosensitive element 9 sequentially due to different reflection angles of the first reflective surface 11 and the second reflective surface 12, and the singlechip of the pcb board 1 judges that the rotary handle/steering wheel rotates clockwise according to the sequence in which the first photosensitive element 8 and the second photosensitive element 9 receive the light; when the rotary handle/steering wheel rotates anticlockwise, light is sequentially reflected to the second photosensitive element 9 and the first photosensitive element 8, and the singlechip of the PCB 1 judges that the rotary handle/steering wheel rotates anticlockwise through the sequence in which the first photosensitive element 8 and the second photosensitive element 9 receive the light.

Meanwhile, the single chip microcomputer on the PCB 1 judges the rotation amplitude and the rotation speed of the rotary handle/steering wheel through the times and the time interval of light received by the photosensitive element.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides an optical recognition device of steering wheel rotation direction, includes PCB board, reflection of light carousel and light screen, its characterized in that: the light-reflecting rotating plate is characterized in that a plurality of groups of V-shaped reflecting surfaces are distributed on the bottom surface of the light-reflecting rotating plate in a circumferential array mode, light holes corresponding to the V-shaped reflecting surfaces are formed in the light shielding plate, and a light-emitting element, a first photosensitive element and a second photosensitive element which are used for receiving light signals are arranged on the PCB below the light holes.

2. An optical recognition apparatus for rotating a steering wheel in a direction according to claim 1, wherein: the V-shaped reflecting surface comprises a first reflecting surface and a second reflecting surface, light rays passing through the first reflecting surface are reflected to the first photosensitive element, and light rays passing through the second reflecting surface are reflected to the second photosensitive element.

3. An optical recognition apparatus for rotating a steering wheel in a direction according to claim 1, wherein: the reflective turntable is connected with a rotating shaft.

4. An optical recognition apparatus for rotating a steering wheel in a direction according to claim 1, wherein: and a light barrier for preventing light interference is arranged between the light-emitting element and the two photosensitive elements on the PCB.

5. An optical recognition apparatus for rotating a steering wheel in a direction according to claim 1, wherein: the optical recognition device is encapsulated in the shell.

6. An optical recognition apparatus for rotating a steering wheel in a direction according to claim 5, wherein: the casing includes main casing, bottom and upper cover, the main casing is the tube-shape, and the inner wall is equipped with PCB board installation position and light screen installation position to compress tightly fixedly through the bottom, be equipped with the interval space between PCB board and the light screen, the reflection of light carousel is installed in the main casing on the light screen, and seals through the upper cover, has the clearance between upper cover and the reflection of light carousel, makes reflection of light carousel can free rotation.

7. An optical recognition apparatus for rotating a steering wheel in a direction according to claim 6, wherein: the center of the bottom surface of the reflective turntable is provided with a center bulge, and the center of the light shielding plate is provided with a groove or a through hole embedded in the center bulge.