Grating hollow encoder

Abstract

The utility model discloses a grating hollow encoder which comprises a circuit board. The base is fixed on the circuit board; the grating rotating disc is arranged on the base and can rotate relative to the base; a plurality of light transmitting holes which are uniformly formed at intervals are formed in the side surface of the grating rotating disc; the light emitter is fixed on the circuit board; the light receiver is fixed on the circuit board and is arranged opposite to the light emitter; the light emitter and the light receiver are respectively arranged on two sides of a light hole in the side surface of the grating rotating disk; the rotating cap is connected with the grating rotating disc and can rotate relative to the base together with the grating rotating disc; the rotating cap rotates to drive the grating rotating disc to rotate, light emitted by the light emitter penetrates through the light-transmitting hole, and the light receiver receives the light transmitted out of the light-transmitting hole and sends out a control signal according to the light. The utility model has the advantages of simple installation and low cost.

Description

Technical Field

[0001] The utility model relates to a hollow encoder, more specifically a grating hollow encoder. Background Art

[0002] Hollow encoders are widely used in products such as knobs. Existing hollow encoders all use mechanical metal brushes for signal output. During the rotation of knobs and other products, the mechanical metal brushes output corresponding signals to achieve control. However, the existing scheme of using mechanical metal brushes to output signals not only leads to a complex structure, complex assembly, and high cost, but also the mechanical metal brushes are worn during use, resulting in a short lifespan. Utility Model Content

[0003] The utility model provides a grating hollow encoder to solve the technical problems of complex assembly, high cost and short life of the solution of the prior art hollow encoder using mechanical metal brushes to output signals.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is to design a grating hollow encoder, including a circuit board, and the grating hollow encoder also includes:

[0005] A base, which is fixed on the circuit board;

[0006] A grating rotating disk is arranged on the base and can rotate relative to the base; a plurality of light-transmitting holes are arranged at even intervals on the side of the grating rotating disk;

[0007] A light emitter, which is fixed on the circuit board;

[0008] A light receiver is fixed on the circuit board and arranged opposite to the light emitter; the light emitter and the light receiver are respectively arranged on both sides of the light-transmitting hole on the side of the grating rotating disk;

[0009] A rotating cap is connected to the grating rotating disk and can rotate relative to the base together with the grating rotating disk; the rotating cap rotates to drive the grating rotating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted through the light-transmitting hole and sends a control signal accordingly.

[0010] The grating hollow encoder also includes:

[0011] A lens tray, which is arranged on the base;

[0012] An LED digital display screen is electrically connected to the circuit board, and the LED digital display screen is supported on the base; the LED digital display screen is provided with an electrical pin electrically connected to the circuit board, and the electrical pin is welded on the circuit board;

[0013] A lens is disposed above the LED digital display screen and supported on the lens tray;

[0014] The rotating cap is provided with a cap hole penetrating the upper and lower surfaces of the rotating cap, the lens is inserted into the cap hole, and the rotating cap can rotate relative to the lens.

[0015] The base comprises:

[0016] A base accommodating cavity is formed by the upper part of the base being recessed downward; a tray insertion hole is provided at the bottom of the base accommodating cavity;

[0017] A base hole is provided in the base accommodating cavity and penetrates the base; the LED digital display screen is placed directly above the base hole, and the electrical pin passes through the base hole to be electrically connected to the circuit board;

[0018] The bottom surface of the lens tray is provided with a tray inserting column corresponding to the tray inserting hole; the lens tray is supported at the bottom of the base accommodating cavity, and the tray inserting column is inserted into the tray inserting hole.

[0019] The lens tray also includes a tray support portion arranged in the center of the lens tray, the tray support portion is inserted into the base hole and supported on the circuit board, and the LED digital display screen is supported on the tray support portion.

[0020] The base also includes a support block extending upward from the bottom of the base accommodating cavity, and the LED digital display screen is supported on the support block.

[0021] The base also includes a protective cover arranged on the base, the protective cover covers the light emitter and the light receiver, and the LED digital display screen is supported on the upper surface of the protective cover.

[0022] The lens tray also includes:

[0023] A positioning plug protruding from the upper surface of the lens tray;

[0024] A positioning slot, which is arranged on the side of the lens tray;

[0025] The rotating cap also includes a brim which is arranged inside the cap hole and extends inwardly;

[0026] The lens comprises:

[0027] A lens slot, which is arranged corresponding to the positioning plug-in block and the positioning plug-in block is inserted into the lens slot;

[0028] A lens plug, which is arranged corresponding to the positioning slot and the lens plug is inserted into the positioning slot;

[0029] A lens positioning platform is arranged on the outer side of the lens and protrudes outward; the brim is supported on the lens positioning platform, and the lens is clamped and positioned between the lens tray and the brim.

[0030] The outer side surface of the grating rotating disk is provided with a plurality of concave teeth arranged at even intervals;

[0031] The base is provided with an elastic arm, and the elastic arm is provided with a convex tooth meshing with the concave tooth; the base is made of plastic, and the elastic arm and the base are formed in one piece.

[0032] A support platform is provided on the outer side of the grating rotating disk, and the support platform is supported on the upper surface of the base;

[0033] The support platform is provided with a recessed positioning groove, the rotating cap is provided with a positioning block, and the positioning block is inserted into the positioning groove.

[0034] The circuit board is provided with a positioning hole and a clamping hole, the lower end of the base is provided with a positioning column corresponding to the positioning hole and a clamping buckle corresponding to the clamping hole, the positioning column is inserted into the positioning hole, the clamping buckle is inserted into the clamping hole and the clamping buckle connects the base and the circuit board.

[0035] The utility model is provided with a circuit board, a base, a grating rotating disk, a light emitter, a light receiver and a rotating cap, wherein the grating rotating disk is arranged on the base and can rotate relative to the base, and a plurality of light-transmitting holes arranged at even intervals are arranged on the side of the grating rotating disk; the light emitter and the light receiver are fixed on the circuit board, and the light receiver is arranged directly opposite to the light emitter; the light emitter and the light receiver are respectively arranged on both sides of the light-transmitting hole on the side of the grating rotating disk; the rotating cap is connected to the grating rotating disk and can rotate relative to the base together with the grating rotating disk; the rotating cap rotates to drive the grating rotating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted from the light-transmitting hole and sends a control signal accordingly. Since the light emitter, the light receiver and the grating rotating disk are used to replace the existing mechanical metal brushes for signal output, the structure is simple, the assembly is convenient, and the cost is also low. Moreover, since the light emitter and the light receiver are used to realize the signal conversion, there is no mechanical wear of the mechanical metal brush, and the life of the hollow encoder using the mechanical metal brush in the prior art is also longer. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The present invention is described in detail below with reference to the embodiments and drawings, wherein:

[0037] Figure 1 It is a structural diagram of the utility model grating hollow encoder;

[0038] Figure 2 This is a structural diagram of the utility model grating hollow encoder from another perspective;

[0039] Figure 3 This is an exploded view of the utility model grating hollow encoder;

[0040] Figure 4 This is an exploded view of the utility model grating hollow encoder from another perspective;

[0041] Figure 5 It is a cross-sectional view of the utility model grating hollow encoder;

[0042] Figure 6 This is an application diagram of the utility model grating hollow encoder. DETAILED DESCRIPTION

[0043] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings:

[0044] Please also see Figures 1 to 6 The utility model grating hollow encoder comprises a circuit board 1, a base 2, a grating rotating disk 3, a light transmitter 4, a light receiver 5, a rotating cap 6, a lens tray 7, an LED digital display screen 8 and a lens 9. Among them:

[0045] The circuit board 1 is mainly used to fix electronic components such as optical transmitters and optical receivers.

[0046] The base 2 is fixed on the circuit board; the base mainly plays a supporting role.

[0047] The grating rotating disk 3 is arranged on the base and can rotate relative to the base; a plurality of light-transmitting holes 31 are arranged evenly spaced on the side of the grating rotating disk 3. The grating rotating disk is mainly used to control whether the light emitted by the light transmitter can be transmitted to the light receiver, thereby realizing signal encoding.

[0048] The light emitter 4 is fixed on the circuit board. The light emitter is used to emit light. In this specific embodiment, the light emitter is an infrared light emitter.

[0049] The optical receiver 5 is fixed on the circuit board and arranged opposite to the optical transmitter; the optical transmitter and the optical receiver are respectively arranged on both sides of the light-transmitting hole on the side of the grating rotating disk. The optical receiver is mainly used to receive the light emitted by the optical transmitter and send a control signal accordingly. In this specific embodiment, the optical receiver is an infrared light receiver.

[0050] The rotating cap 6 is connected to the grating rotating disk and can rotate relative to the base together with the grating rotating disk; the rotating cap rotates to drive the grating rotating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted from the light-transmitting hole and sends a control signal accordingly. The rotating cap is mainly used for rotation operation, thereby driving the grating rotating disk to rotate.

[0051] Since light emitters, light receivers and grating rotating disks are used to replace existing mechanical metal brushes for signal output, the structure is simple, assembly is convenient and the cost is low. Moreover, since light emitters and light receivers are used to realize signal conversion, there is no mechanical wear of the mechanical metal brushes. Compared with the hollow encoders using mechanical metal brushes in the prior art, the service life is also longer.

[0052] The lens tray 7 is arranged on the base. The lens tray is mainly used to support the lens.

[0053] The LED digital display screen 8 is electrically connected to the circuit board, and the LED digital display screen is supported on the base; the LED digital display screen is provided with an electrical pin 81 electrically connected to the circuit board, and the electrical pin is welded on the circuit board. The LED digital display screen is used for display, by supporting the LED digital display screen on the base and directly welding it to the circuit board through the electrical pin. The direct plug-in welding method is adopted to optimize the connection method between the LED digital display screen and the circuit board, and the traditional wiring connection method is eliminated, which greatly simplifies the assembly method and further reduces the cost.

[0054] The lens 9 is arranged above the LED digital display screen and supported on the lens tray. The lens 9 is mainly used to transmit the light of the LED digital display screen, so that the display of the LED digital display screen can be seen from the outside. The lens only needs to be able to transmit light and can be made of ordinary light-transmitting glass, light-transmitting plastic, etc.

[0055] The rotating cap 6 is provided with a cap hole 61 penetrating the upper and lower surfaces of the rotating cap, the lens is inserted into the cap hole, and the rotating cap can rotate relative to the lens.

[0056] In this specific embodiment, the base 2 includes a base accommodating cavity 21 and a base hole 22. Wherein:

[0057] The base accommodating cavity 21 is formed by the upper portion of the base being recessed downward; a tray inserting hole 211 is disposed at the bottom of the base accommodating cavity 21 .

[0058] The base hole 22 is disposed in the base accommodating cavity and penetrates the base; the LED digital display screen is placed directly above the base hole, and the electrical pin passes through the base hole to be electrically connected to the circuit board.

[0059] The bottom surface of the lens tray 7 is provided with a tray plugging column 71 corresponding to the tray plugging hole; the lens tray is supported at the bottom of the base accommodating cavity 21, and the tray plugging column 71 is inserted into the tray plugging hole 211. The lens tray is inserted into the tray plugging hole 211 through the tray plugging column 71, which can not only play a positioning role when the lens tray is installed, but also prevent the lens tray from rotating relative to the base.

[0060] In this specific embodiment, the lens tray 7 also includes a tray support portion 72 arranged in the center of the lens tray. The tray support portion 72 is inserted into the base hole 22 and supported on the circuit board 1. The LED digital display screen 8 is supported on the tray support portion 72.

[0061] In this specific embodiment, the base 2 further includes a support block 23 extending upward from the bottom of the base accommodating cavity, and the LED digital display screen is supported on the support block.

[0062] In this specific embodiment, the base 2 further includes a protective cover 24 disposed on the base, the protective cover covers the light emitter and the light receiver, and the LED digital display screen is supported on the upper surface of the protective cover. The protective cover can effectively protect the light emitter and the light receiver, and can also prevent the light emitted by the light emitter from leaking out and affecting the appearance and function of the product.

[0063] In this specific embodiment, the lens tray 7 further comprises a positioning block 73 and a positioning slot 74. The positioning block 73 protrudes from the upper surface of the lens tray, and the positioning slot is arranged on the side of the lens tray.

[0064] The rotating cap 6 further includes a cap brim 68 which is disposed inside the cap hole 61 and extends inward.

[0065] The lens 9 includes a lens slot 91, a lens plug post 92 and a lens positioning platform 93, wherein:

[0066] The lens slot 91 is arranged corresponding to the positioning block and the positioning block is inserted into the lens slot.

[0067] The lens plug post 92 is disposed corresponding to the positioning slot and the lens plug post is inserted into the positioning slot.

[0068] The lens positioning platform 93 is arranged on the outer side of the lens and protrudes outward; the brim is supported on the lens positioning platform, and the lens is clamped and positioned between the lens tray and the brim.

[0069] By inserting the positioning plug into the lens slot and the lens plug post into the positioning slot, the lens can be positioned and the lens can be prevented from rotating relative to the lens tray. The lens positioning platform and the brim can be arranged to position the lens in the up and down directions.

[0070] In this specific embodiment, the outer side surface of the grating rotating disk 3 is provided with a plurality of concave teeth 32 arranged at even intervals.

[0071] The base 2 is provided with an elastic arm 25, and the elastic arm 25 is provided with a convex tooth 251 meshing with the concave tooth; the base is made of plastic, and the elastic arm and the base are integrally formed. By providing the elastic arm and the meshing of the convex tooth with the concave tooth of the grating rotating disk, the rotation and positioning of the grating rotating disk relative to the base can be facilitated. In addition, the base and the elastic arm are made of plastic, which is not only low in cost but also more convenient to manufacture than using metal springs.

[0072] In this specific embodiment, a support platform 33 is disposed on the outer side surface of the grating rotating disk 3 , and the support platform 33 is supported on the upper surface of the base 2 .

[0073] The support platform 33 is provided with a recessed positioning groove 331, and the rotating cap 6 is provided with a positioning block 62, and the positioning block is inserted into the positioning groove. By inserting the positioning block into the positioning groove, the rotating cap and the grating rotating disk can be fixedly connected, so that when the rotating cap is rotated, the grating rotating disk can be driven to rotate synchronously.

[0074] In this specific embodiment, the circuit board 1 is provided with a positioning hole 11 and a clamping hole 12, and the lower end of the base 2 is provided with a positioning column 26 corresponding to the positioning hole and a clamping buckle 27 corresponding to the clamping hole, wherein the positioning column is inserted into the positioning hole, and the clamping buckle is inserted into the clamping hole and the base and the circuit board are clamped together. By inserting the positioning column into the positioning hole, the base can be positioned and the base can be prevented from rotating relative to the circuit board. By inserting the clamping buckle into the clamping hole, the base and the circuit board can be clamped together.

[0075] In this specific embodiment, the outer side of the rotating cap 6 may also be provided with a positioning portion 69 protruding outward. The circuit board is provided with a fixing hole 19. Please refer to Figure 6 When installed on the product, the circuit board is fixed in the shell by screws passing through the fixing holes, and the upward movement of the rotating cap 6 is restricted by the product shell 90, thereby realizing the limitation of the rotating cap in the up and down directions.

[0076] The installation steps of this utility model are as follows:

[0077] 1. Solder the infrared transmitting tube and the infrared receiving tube on the circuit board;

[0078] 2. Connect the base clip to the circuit board;

[0079] 3. Place the lens tray on the base;

[0080] 4. Then support the LED digital display screen on the base, insert the electrical pins of the LED digital display screen into the circuit board and weld them to the circuit board;

[0081] 5. Place the grating rotating disk on the base so that the convex teeth mesh with the concave teeth;

[0082] 6. Place the lens on the lens tray so that the positioning block is inserted into the lens slot and the lens pin is inserted into the positioning slot;

[0083] 7. Install the rotating cap on the grating rotating disk so that the positioning block is inserted into the positioning groove.

[0084] The utility model is provided with a circuit board, a base, a grating rotating disk, a light emitter, a light receiver and a rotating cap, wherein the grating rotating disk is arranged on the base and can rotate relative to the base, and a plurality of light-transmitting holes arranged at even intervals are arranged on the side of the grating rotating disk; the light emitter and the light receiver are fixed on the circuit board, and the light receiver is arranged directly opposite to the light emitter; the light emitter and the light receiver are respectively arranged on both sides of the light-transmitting hole on the side of the grating rotating disk; the rotating cap is connected to the grating rotating disk and can rotate relative to the base together with the grating rotating disk; the rotating cap rotates to drive the grating rotating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted from the light-transmitting hole and sends a control signal accordingly. Since the light emitter, the light receiver and the grating rotating disk are used to replace the existing mechanical metal brushes for signal output, the structure is simple, the assembly is convenient, and the cost is also low. Moreover, since the light emitter and the light receiver are used to realize the signal conversion, there is no mechanical wear of the mechanical metal brush, and the life of the hollow encoder using the mechanical metal brush in the prior art is also longer.

[0085] In addition, by supporting the LED digital display screen on the base and directly soldering it to the circuit board through electrical pins, the direct plug-in soldering method is adopted to optimize the connection method between the LED digital display screen and the circuit board, and the traditional wiring connection method is eliminated, which greatly simplifies the assembly method and further reduces the cost.

[0086] In addition, by providing the elastic arm and the engagement of the convex teeth with the concave teeth of the grating rotating disk, the grating rotating disk can be easily rotated and positioned relative to the base. In addition, the base and the elastic arm are made of plastic, which is not only low in cost but also more convenient to manufacture than using metal shrapnel.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grating hollow encoder, comprising a circuit board, characterized in that: The grating hollow encoder also includes: A base, which is fixed on the circuit board; A grating rotating disk is arranged on the base and can rotate relative to the base; a plurality of light-transmitting holes are arranged at even intervals on the side of the grating rotating disk; A light emitter, which is fixed on the circuit board; A light receiver is fixed on the circuit board and arranged opposite to the light emitter; the light emitter and the light receiver are respectively arranged on both sides of the light-transmitting hole on the side of the grating rotating disk; A rotating cap is connected to the grating rotating disk and can rotate relative to the base together with the grating rotating disk; the rotating cap rotates to drive the grating rotating disk to rotate, the light emitted by the light emitter passes through the light-transmitting hole, and the light receiver receives the light transmitted through the light-transmitting hole and sends a control signal accordingly.

2. The grating hollow encoder according to claim 1, characterized in that: The grating hollow encoder also includes: A lens tray, which is arranged on the base; An LED digital display screen is electrically connected to the circuit board, and the LED digital display screen is supported on the base; the LED digital display screen is provided with an electrical pin electrically connected to the circuit board, and the electrical pin is welded on the circuit board; A lens is disposed above the LED digital display screen and supported on the lens tray; The rotating cap is provided with a cap hole penetrating the upper and lower surfaces of the rotating cap, the lens is inserted into the cap hole, and the rotating cap can rotate relative to the lens.

3. The grating hollow encoder according to claim 2, characterized in that: The base comprises: A base accommodating cavity is formed by the upper part of the base being recessed downward; a tray insertion hole is provided at the bottom of the base accommodating cavity; A base hole is provided in the base accommodating cavity and penetrates the base; the LED digital display screen is placed directly above the base hole, and the electrical pin passes through the base hole to be electrically connected to the circuit board; The bottom surface of the lens tray is provided with a tray inserting column corresponding to the tray inserting hole; the lens tray is supported at the bottom of the base accommodating cavity, and the tray inserting column is inserted into the tray inserting hole.

4. The grating hollow encoder according to claim 3, characterized in that: The lens tray also includes a tray support portion arranged in the center of the lens tray, the tray support portion is inserted into the base hole and supported on the circuit board, and the LED digital display screen is supported on the tray support portion.

5. The grating hollow encoder according to claim 3, characterized in that: The base also includes a support block extending upward from the bottom of the base accommodating cavity, and the LED digital display screen is supported on the support block.

6. The grating hollow encoder according to claim 3, characterized in that: The base also includes a protective cover arranged on the base, the protective cover covers the light emitter and the light receiver, and the LED digital display screen is supported on the upper surface of the protective cover.

7. The grating hollow encoder according to claim 2, characterized in that: The lens tray also includes: A positioning plug protruding from the upper surface of the lens tray; A positioning slot, which is arranged on the side of the lens tray; The rotating cap also includes a brim which is arranged inside the cap hole and extends inwardly; The lens comprises: A lens slot, which is arranged corresponding to the positioning plug-in block and the positioning plug-in block is inserted into the lens slot; A lens plug, which is arranged corresponding to the positioning slot and the lens plug is inserted into the positioning slot; A lens positioning platform is arranged on the outer side of the lens and protrudes outward; the brim is supported on the lens positioning platform, and the lens is clamped and positioned between the lens tray and the brim.

8. The grating hollow encoder according to claim 1, characterized in that: The outer side surface of the grating rotating disk is provided with a plurality of concave teeth arranged at even intervals; The base is provided with an elastic arm, and the elastic arm is provided with a convex tooth meshing with the concave tooth; the base is made of plastic, and the elastic arm and the base are formed in one piece.

9. The grating hollow encoder according to claim 1, characterized in that: A support platform is provided on the outer side of the grating rotating disk, and the support platform is supported on the upper surface of the base; The support platform is provided with a recessed positioning groove, the rotating cap is provided with a positioning block, and the positioning block is inserted into the positioning groove.

10. The grating hollow encoder according to claim 1, characterized in that: The circuit board is provided with a positioning hole and a clamping hole, the lower end of the base is provided with a positioning column corresponding to the positioning hole and a clamping buckle corresponding to the clamping hole, the positioning column is inserted into the positioning hole, the clamping buckle is inserted into the clamping hole and the clamping buckle connects the base and the circuit board.

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