Encoder

Abstract

The invention relates to the technical field of encoders, and particularly discloses an encoder which comprises a base, a sealing cover, a circuit substrate, a rubber rotating sheet, a shaft core and a locking assembly. A mounting groove is formed in the base, and the sealing cover covers the base and is used for sealing the mounting groove; the circuit substrate is arranged in the mounting groove; the rubber rotating sheet is rotationally arranged in the mounting groove; a brush is arranged on one side of the rubber rotating piece and abuts against the circuit substrate. One end of the shaft core is inserted into the rubber rotating sheet and used for driving the rubber rotating sheet to rotate, and the other end of the shaft core penetrates through the sealing cover; the locking assembly is arranged on the sealing cover and used for locking or unlocking the shaft core in the radial direction of the shaft core. When the locking assembly locks the shaft core in the radial direction of the shaft core, the shaft core cannot rotate at the moment, so that the shaft core cannot directly rotate due to external force, misoperation is avoided, equipment using the encoder is prevented from receiving wrong instructions, and normal use is prevented from being affected; and the conditions of equipment damage and safety accidents are further avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of encoders, and in particular to an encoder. Background Art

[0002] An encoder is a device that compiles signals or data and converts them into a signal form that can be used for communication, transmission, and storage. It is widely used in industrial equipment, medical equipment, electronic equipment, consumer electronics, aerospace, metrology, and other technical fields. Absolute rotary encoders, in particular, convert position information into electrical signals for output through contact between brushes and conductive tracks on a substrate.

[0003] Currently, brushes rotate, driven by a shaft, to change their contact position with the conductive track, thereby altering the electrical signal. In existing absolute rotary encoders, the shaft is easily affected by external forces, causing rotation. This can lead to misoperation, causing the device using the encoder to receive incorrect instructions, affecting normal operation and, in severe cases, causing damage to the device or even a safety incident. Summary of the Invention

[0004] The object of the present invention is to provide an encoder to solve the problem in the prior art that the shaft core of an absolute rotary encoder is easily affected by external forces and rotates, thereby causing malfunction.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides an encoder, comprising:

[0007] A base and a cover, wherein the base is provided with a mounting groove, and the cover is provided on the base for sealing the mounting groove;

[0008] a circuit substrate, the circuit substrate being arranged in the mounting groove;

[0009] a film transfer sheet rotatably disposed in the mounting slot; a brush is disposed on one side of the film transfer sheet, the brush abutting against the circuit substrate;

[0010] An axis core, one end of which is inserted into the film transfer sheet to drive the film transfer sheet to rotate, and the other end of which passes through the cover;

[0011] A locking assembly is provided on the cover and is used to lock or unlock the shaft core along the radial direction of the shaft core.

[0012] As an optional solution for the above-mentioned encoder, the locking assembly includes a mounting seat, a first elastic member and a locking member, the mounting seat is arranged on the cover, and the first elastic member and the locking member are both arranged in the mounting seat; one end of the first elastic member abuts against the locking member, used to drive the locking member to always move toward the side close to the shaft core; the locking member can be inserted into or detached from the shaft core along the radial direction of the shaft core.

[0013] As an optional solution for the above-mentioned encoder, the shaft core includes a locking groove and an unlocking groove which are interconnected along the axial direction, and the shaft core is movably arranged between the base and the cover along the axial direction; when the locking member is located in the locking groove, the locking member is engaged with the locking groove, and when the locking member is located in the unlocking groove, the locking member can be disengaged from the unlocking groove along the circumference of the shaft core.

[0014] As an optional solution of the above-mentioned encoder, the encoder also includes a second elastic member, which is arranged between the film transfer film and the shaft core, and is used to drive the shaft core to always move toward the side away from the base, and the locking groove is located on the side close to the base relative to the unlocking groove.

[0015] As an optional solution of the above encoder, the unlocking groove is arranged in an arc shape along the groove wall of the circumference of the shaft core.

[0016] As an optional solution of the above encoder, one end of the shaft core is provided with a flat portion, and the film transfer sheet is provided with an inserting hole, and the flat portion can be inserted into the inserting hole.

[0017] As an optional solution for the above-mentioned encoder, the film transfer sheet is provided with a plurality of positioning grooves spaced along the circumferential direction, and a third elastic member and a positioning member are provided on the base. One end of the third elastic member abuts against the positioning member to drive the positioning member to always move toward the side close to the film transfer sheet.

[0018] As an optional solution of the above encoder, the positioning member is a ball structure.

[0019] As an optional solution of the above encoder, a center positioning column is provided at the bottom of the installation slot, and the center positioning column can pass through the circuit substrate and the film.

[0020] As an optional solution of the above encoder, the encoder further includes a wiring harness terminal, one end of the wiring harness terminal is connected to the circuit substrate, and the other end of the wiring harness terminal passes through the base.

[0021] The beneficial effects of the present invention are:

[0022] The encoder includes a base, a cover, a circuit board, a transfer film, a shaft, and a locking assembly. The base is provided with a mounting slot, the cover is mounted on the base to seal the mounting slot, the circuit board is mounted within the mounting slot, and the transfer film rotates within the mounting slot. A brush is provided on one side of the transfer film, which abuts the circuit board. The rotation of the brush on the circuit board changes the contact position between the two, thereby changing the output electrical signal. One end of the shaft is inserted into the transfer film to drive its rotation, while the other end of the shaft passes through the cover. By rotating the shaft outside the cover, the user can cause the transfer film to drive the brush to rotate. At the same time, the locking assembly is provided on the cover, which is used to lock or unlock the shaft core along the radial direction of the shaft core. Therefore, when the locking assembly locks the shaft core along the radial direction of the shaft core, the shaft core cannot rotate at this time, so that the shaft core will not be directly rotated by external force, thereby avoiding misoperation and preventing the equipment using the encoder from receiving erroneous instructions and affecting normal use, further avoiding equipment damage and safety accidents. After the locking assembly unlocks the shaft core, the encoder can be adjusted and used normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of an encoder provided by an embodiment of the present invention;

[0024] Figure 2 An exploded schematic diagram of an encoder provided by an embodiment of the present invention;

[0025] Figure 3 A partially exploded schematic diagram of an encoder provided by an embodiment of the present invention.

[0026] In the picture:

[0027] 1. Base; 11. Mounting slot; 111. Center positioning column; 12. Third elastic member; 13. Positioning member; 14. Limiting slot; 15. Second fixing bracket; 2. Cover; 3. Circuit board; 4. Transfer film; 41. Brush; 42. Positioning slot; 5. Shaft core; 51. Locking slot; 52. Unlocking slot; 53. Flat portion; 6. Locking assembly; 61. Mounting seat; 611. Mounting bracket; 612. First fixing bracket; 62. First elastic member; 63. Locking member; 7. Second elastic member; 8. Wiring terminal. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] like Figures 1 to 3 As shown, this embodiment provides an encoder capable of applying instructions to a device using the encoder.

[0033] The encoder comprises a base 1, a cover 2, a circuit board 3, a transfer film 4, a shaft 5, and a locking assembly 6. The base 1 is provided with a mounting slot 11. The cover 2 is mounted on the base 1 to block the mounting slot 11. The circuit board 3 is mounted within the mounting slot 11. The transfer film 4 rotates within the mounting slot 11. A brush 41 is provided on one side of the transfer film 4. The brush 41 abuts the circuit board 3. The rotation of the brush 41 on the circuit board 3 changes the contact position between the two, thereby changing the output electrical signal. One end of the shaft 5 is inserted into the transfer film 4 to drive the rotation of the transfer film 4. The other end of the shaft 5 passes through the cover 2. By rotating the shaft 5 outside the cover 2, the user can rotate the transfer film 4 and the brush 41. Optionally, the base 1 and the cover 2 are connected by rivets.

[0034] At the same time, the locking assembly 6 is provided on the cover 2, and is used to lock or unlock the shaft core 5 along the radial direction of the shaft core 5, so that when the locking assembly 6 locks the shaft core 5 along the radial direction of the shaft core 5, the shaft core 5 cannot rotate at this time, so that the shaft core 5 will not be directly rotated by external force, thereby avoiding misoperation and preventing the equipment using the encoder from receiving erroneous instructions and affecting normal use, further avoiding equipment damage and safety accidents. After the locking assembly 6 unlocks the shaft core 5, the encoder can be adjusted and used normally.

[0035] Specifically, a center positioning column 111 is provided at the bottom of the mounting groove 11. The center positioning column 111 can pass through the circuit substrate 3 and the film 4 to position the circuit substrate 3 and the film 4, preventing the film 4 from being displaced when rotating relative to the circuit substrate 3. At the same time, the brush 41 on the film 4 can accurately abut the corresponding position on the circuit substrate 3, effectively ensuring contact reliability and improving signal stability.

[0036] like Figure 2As shown, the locking assembly 6 includes a mounting seat 61, a first elastic member 62 and a locking member 63. The mounting seat 61 is provided on the cover 2, and the first elastic member 62 and the locking member 63 are both provided in the mounting seat 61. One end of the first elastic member 62 abuts against the locking member 63, which is used to drive the locking member 63 to always move toward the side close to the shaft core 5, and the locking member 63 can be inserted into or disengaged from the shaft core 5 along the radial direction of the shaft core 5, so that the locking member 63 can be inserted into the shaft core 5 under the drive of the first elastic member 62, limiting the rotation of the shaft core 5 to prevent misoperation. When the locking member 63 overcomes the elastic force of the first elastic member 62 and disengages from the shaft core 5, the shaft core 5 can rotate normally. Specifically, the mounting base 61 includes a mounting bracket 611 and a first fixed bracket 612. The mounting bracket 611 is detachably connected to the cover 2, and the first fixed bracket 612 is detachably connected to the mounting bracket 611. The first elastic member 62 and the locking member 63 are both arranged between the mounting bracket 611 and the first fixed bracket 612 to facilitate the installation and use of the first elastic member 62 and the locking member 63.

[0037] like Figure 2 and Figure 3 As shown, the shaft core 5 includes a locking groove 51 and an unlocking groove 52 that are interconnected along the axial direction. The shaft core 5 is axially movable between the base 1 and the cover 2. When the locking member 63 is located in the locking groove 51, the locking member 63 is engaged with the locking groove 51. When the locking member 63 is located in the unlocking groove 52, the locking member 63 can be disengaged from the unlocking groove 52 along the circumference of the shaft core 5. Therefore, through the axial movement of the shaft core 5, the locking assembly 6 can lock and unlock the shaft core 5, which is convenient and fast. When the locking member 63 is located in the locking groove 51, the initial angle of the brush 41 relative to the circuit substrate 3 is fixed, which is convenient for the user to adjust the encoder. Among them, the groove wall of the unlocking groove 52 along the circumference of the shaft core 5 is arranged in an arc shape, so that the locking member 63 can be easily disengaged from the unlocking groove 52, reducing the difficulty of unlocking. Optionally, the head of the locking member 63 is arcuate, which further reduces the difficulty of disengaging the locking member 63 from the unlocking slot 52 and prevents the locking member 63 from scratching the shaft core 5 during the rotation of the shaft core 5. Furthermore, a flat portion 53 is provided at one end of the shaft core 5, and the transfer film 4 is provided with an insertion hole. The flat portion 53 can be inserted into the insertion hole, so that the shaft core 5 can move axially relative to the transfer film 4 without affecting the transfer film 4, while the shaft core 5 drives the transfer film 4 to rotate circumferentially.

[0038] Furthermore, the encoder also includes a second elastic member 7, which is arranged between the film transfer sheet 4 and the shaft core 5, and is used to drive the shaft core 5 to always move toward the side away from the base 1, and the locking groove 51 is located on the side close to the base 1 relative to the unlocking groove 52, so that when an axial force is applied to the shaft core 5, the shaft core 5 can overcome the elastic force of the second elastic member 7 and move, so that the locking member 63 enters the unlocking groove 52 from the locking groove 51. At this time, the shaft core 5 can rotate in the circumferential direction. When no axial force is applied to the shaft core 5, the shaft core 5 automatically bounces up under the influence of the second elastic member 7. At this time, the rotating shaft core 5 moves to the position of the locking member 63 corresponding to the locking groove 51, and the locking member 63 is automatically inserted into the locking groove 51 under the influence of the first elastic member 62, thereby achieving self-locking.

[0039] Furthermore, the transfer film 4 is provided with a plurality of positioning slots 42 spaced apart along its circumference. A third elastic member 12 and a positioning member 13 are provided on the base 1. One end of the third elastic member 12 abuts the positioning member 13, driving the positioning member 13 to always move toward the side closer to the transfer film 4. As a result, the positioning member 13 is affected by the elastic force of the third elastic member 12 and abuts within the positioning slot 42, thereby positioning the brush 41 relative to the circuit substrate 3. By rotating the shaft core 5, the positioning member 13 can be positioned within different positioning slots 42, thereby improving the adjustment accuracy of the encoder. Furthermore, different third elastic members 12 can be selected based on the user's different hand feel and torque requirements to meet usage needs. Optionally, the positioning member 13 is a round bead structure, providing a clear and crisp sense of positioning when the positioning member 13 leaves one of the plurality of positioning slots 42 and enters another, and is wear-resistant and durable. Specifically, a limiting groove 14 connected to the installation groove 11 is provided on the base 1, and the third elastic member 12 and the positioning member 13 are both arranged in the limiting groove 14. At the same time, the base 1 is detachably connected to a second fixing bracket 15, and the second fixing bracket 15 can cover the limiting groove 14 to facilitate the installation and use of the third elastic member 12 and the positioning member 13.

[0040] The encoder further includes a wiring harness terminal 8, one end of which is connected to the circuit board 3, and the other end of which passes through the base 1. This plug-and-play connection between the wiring harness terminal 8 allows for electrical connection between the encoder and the device, facilitating operation. The base 1 and / or the cover 2 are provided with threaded holes, allowing the encoder to be easily and conveniently mounted on the device by screwing the screws into the threaded holes.

[0041] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An encoder, characterized in that: include: A base (1) and a cover (2), wherein the base (1) is provided with a mounting groove (11), and the cover (2) is disposed on the base (1) and is used to block the mounting groove (11); A circuit substrate (3), wherein the circuit substrate (3) is arranged in the mounting groove (11); A film transfer sheet (4), the film transfer sheet (4) being rotatably disposed in the mounting groove (11); a brush (41) is disposed on one side of the film transfer sheet (4), the brush (41) being in contact with the circuit substrate (3); an axis core (5), one end of the axis core (5) being inserted into the film transfer sheet (4) for driving the film transfer sheet (4) to rotate, and the other end of the axis core (5) passing through the cover (2); A locking assembly (6), wherein the locking assembly (6) is arranged on the cover (2) and is used to lock or unlock the shaft core (5) along the radial direction of the shaft core (5).

2. The encoder according to claim 1, characterized in that The locking assembly (6) comprises a mounting seat (61), a first elastic member (62) and a locking member (63); the mounting seat (61) is arranged on the cover (2); the first elastic member (62) and the locking member (63) are both arranged in the mounting seat (61); one end of the first elastic member (62) abuts against the locking member (63) to drive the locking member (63) to always move toward a side close to the shaft core (5); the locking member (63) can be inserted into or detached from the shaft core (5) along the radial direction of the shaft core (5).

3. The encoder according to claim 2, characterized in that The shaft core (5) comprises a locking groove (51) and an unlocking groove (52) which are interconnected along the axial direction, and the shaft core (5) is movably arranged between the base (1) and the cover (2) along the axial direction; when the locking member (63) is located in the locking groove (51), the locking member (63) is engaged with the locking groove (51); when the locking member (63) is located in the unlocking groove (52), the locking member (63) can be disengaged from the unlocking groove (52) along the circumferential direction of the shaft core (5).

4. The encoder according to claim 3, characterized in that The encoder further comprises a second elastic member (7), the second elastic member (7) being arranged between the film transfer sheet (4) and the shaft core (5) and being used for driving the shaft core (5) to always move towards a side away from the base (1), and the locking groove (51) being located on a side close to the base (1) relative to the unlocking groove (52).

5. The encoder according to claim 3, characterized in that The unlocking groove (52) is arranged in an arc shape along the groove wall of the circumference of the shaft core (5).

6. The encoder according to claim 3, characterized in that One end of the shaft core (5) is provided with a flat portion (53), and the film transfer sheet (4) is provided with an insertion hole, and the flat portion (53) can be inserted into the insertion hole.

7. The encoder according to claim 1, characterized in that The transfer film (4) is provided with a plurality of positioning grooves (42) at intervals along the circumferential direction. The base (1) is provided with a third elastic member (12) and a positioning member (13). One end of the third elastic member (12) abuts against the positioning member (13) to drive the positioning member (13) to always move toward a side close to the transfer film (4).

8. The encoder according to claim 7, characterized in that The positioning member (13) is a round bead structure.

9. The encoder according to any one of claims 1 to 8, characterized in that: A center positioning column (111) is provided at the bottom of the installation groove (11), and the center positioning column (111) can pass through the circuit substrate (3) and the film transfer sheet (4).

10. The encoder according to any one of claims 1 to 8, characterized in that: The encoder further comprises a wiring harness terminal (8), one end of which is connected to the circuit substrate (3), and the other end of which passes through the base (1).

Images