Magnetic encoder

Abstract

The utility model provides a magnetic encoder, which comprises a fixed support, a rotating support, a magnetic ring, a fixed part and a signal induction device, and is characterized in that the rotating support is arranged on the outer side of the fixed support and is rotatably connected with the fixed support; the magnetic ring is arranged on the rotating bracket; and the fixed part is arranged on the fixed bracket and limits the rotating bracket on the fixed bracket. And the signal sensing device is arranged between the fixed part and the rotating bracket and is used for sensing the position change of the magnetic ring. According to the magnetic encoder, the signal induction device and the magnetic ring are arranged, the signal induction device is used for inducing the position change of the magnetic ring, the magnetic field change is converted into an electric signal, the electric signal is processed to generate corresponding motion information or position information, and the control effect is achieved; the magnetic encoder is not easy to be affected by factors such as moisture, and risks such as short circuit are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of encoder, in particular to a magnetic encoder. BACKGROUND

[0002] Rotary encoder is widely used in faucet, or water heater, gas stove, microwave oven, induction cooker and other electrical appliances, or applied to the automobile, for example, the faucet can be used for adjusting the size or temperature of water flow, for example, the automobile can be used for adjusting the automobile sound, automobile air conditioner, to play the role of adjusting volume, frequency modulation, temperature adjustment, air speed adjustment, etc.

[0003] However, for the existing rotary encoder product, there are some defects, for example, in the use process, the waterproof effect is not good, and the risk of short circuit is easy to cause, the pins of the traditional encoder metal contact piece are distributed on the same side, the distance between the signal pin and the ground pin is short, and under the environment of voltage and humidity between the signal pin and the ground pin, silver migration will occur between the signal pin and the ground pin to cause short circuit.

[0004] Therefore, the present application provides a magnetic encoder, which can overcome the shortcomings of the prior art. SUMMARY

[0005] The utility model discloses a magnetic encoder, which can overcome the shortcomings of the prior art.

[0006] According to the magnetic encoder provided by the utility model, the signal sensing device is arranged between the fixed part and the fixed support, and is used for sensing the position change of the magnetic ring.

[0007] The fixed support is arranged on the fixed part.

[0008] The rotating support is arranged on the outer side of the fixed support and is rotationally connected with the fixed support.

[0009] The magnetic ring is arranged on the rotating support.

[0010] The fixed part is arranged on the fixed support and limits the rotating support on the fixed support.

[0011] The signal sensing device is arranged between the fixed part and the fixed support, and is used for sensing the position change of the magnetic ring.

[0012] The magnetic encoder is not susceptible to dampness and the like by adopting the magnetic ring and the signal sensing device, and risks such as short circuit are avoided.

[0013] In some embodiments of the utility model, the magnetic ring is provided with a plurality of small grids, and there are magnetic signals in the small grids, when the rotor rotates by one grid, the signal sensing device on the fixed support will sense the magnetic signal (similar to 010101..), and then transmit to the circuit board for control.

[0014] In some embodiments of the utility model, the magnetic encoder further comprises a damping sheet, the damping sheet is arranged on the fixing part, elastic protrusions are arranged on the damping sheet, a plurality of limiting grooves matched with the elastic protrusions are arranged on the rotating support, and resistance is generated in the rotating process of the rotating support through the limiting grooves.

[0015] In some embodiments of the utility model, a first placing groove for placing the magnetic ring is arranged on the rotating support.

[0016] In some embodiments of the utility model, the signal sensing device extends to the outside of the fixed support through the lead part.

[0017] In some embodiments of the utility model, the fixed support comprises a first annular part located on the inner side, a second annular part located on the outer side and having a height lower than that of the first annular part, a circular ring part for connecting the first annular part and the second annular part, and the first annular part, the second annular part and the circular ring part form an annular groove.

[0018] In some embodiments of the utility model, the rotating support comprises a mounting part for mounting the magnetic ring and a rotating part sleeved on the outside of the fixed support.

[0019] In some embodiments of the utility model, the fixing part comprises a limiting part in the shape of a ring and a plurality of first buckles arranged on the limiting part, the damping sheet fixing device is below the limiting part, and the elastic protrusions abut on the limiting grooves downward.

[0020] In some embodiments of the utility model, the fixed support is further provided with a containing groove for embedding the first buckle, the first buckle is in the shape of L and comprises a connecting part connected with the limiting part and a buckling part connected with the connecting part, and recessed groove parts are arranged on both sides of the connecting part and the buckling part.

[0021] In some embodiments of the utility model, still include the circuit board for with signal induction device electricity is connected, the fixed part still include the second buckle for installing circuit board.

[0022] In some embodiments of the utility model, the fixed support is provided with a plurality of support tables for supporting the circuit board and a plurality of positioning columns for positioning the circuit board installation, the positioning column includes a support part and a positioning part arranged on the support part.

[0023] In some embodiments of the utility model, the inner side of the fixed support is provided with a first clamping groove for preventing rotation.

[0024] In some embodiments of the utility model, the outer side of the rotating support is provided with a second clamping groove for driving rotation. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the utility model, the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0026] Among them:

[0027] Figure 1 It is the structure diagram of the utility model magnetic encoder Figure 1 ;

[0028] Figure 2 It is the structure diagram of the utility model magnetic encoder Figure 2 ;

[0029] Figure 3 It is the sectional view of the utility model magnetic encoder;

[0030] Figure 4 It is the partial enlarged view of the rotating support of the utility model;

[0031] Figure 5 It is the structure diagram of the utility model damping sheet;

[0032] Figure 6 It is the schematic diagram of the utility model magnetic ring after installation.

[0033] Label explanation:

[0034] 10, fixed support; 11, first annular part; 12, second annular part; 13, circular ring part; 14, containing groove; 15, support table; 16, positioning column; 161, support part; 162, positioning part; 17, first clamping groove; 18, second placing groove; 20, rotating support; 21, mounting part; 211, first placing groove; 212, limiting groove; 213, clamping protrusion; 22, rotating part; 221, second clamping groove; 30, magnetic ring; 40, fixing piece; 41, limiting part; 42, first buckle; 421, connecting part; 422, buckling part; 423, groove part; 43, second buckle; 50, signal sensing device; 51, lead part; 70, damping sheet; 71, elastic protrusion. DETAILED DESCRIPTION

[0035] In order to make the technical problems, technical schemes and beneficial effects of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and not to limit the utility model.

[0036] Please refer to Figures 1 to 6 It is a magnetic encoder as an embodiment of the utility model, comprising a fixed support 10, a rotating support 20, a magnetic ring 30, a fixing piece 40, a signal sensing device 50, the rotating support 20 is arranged on the outside of the fixed support 10 and is rotationally connected with the fixed support 10;The magnetic ring 30 is arranged on the rotating support 20;The fixing piece 40 is arranged on the fixed support 10 and limits the rotating support 20 on the fixed support 10. The signal sensing device 50 is arranged between the fixing piece 40 and the rotating support 20 and is used to sense the position change of the magnetic ring 30. The magnetic encoder of the utility model is provided with the signal sensing device 50 and the magnetic ring 30, wherein the signal sensing device 50 is used to sense the position change of the magnetic ring 30, the magnetic field change is converted into an electric signal, and the electric signal is processed to generate corresponding motion information or position information, which plays a control role. The magnetic ring 30 and the signal sensing device 50 are adopted, so that the magnetic encoder is not easily affected by factors such as humidity, and the risk of short circuit is avoided.

[0037] The magnetic ring 30 is provided with a plurality of small grids, and there is a magnetic signal in the small grid. When the rotor rotates one grid, the signal sensing device 50 on the fixed support 10 will sense the magnetic signal (similar to 010101..), and then transmit it to the circuit board to implement control. The magnetic signal collected by the circuit board can be controlled according to the need, such as temperature or flow control. The control mode is prior art and will not be described in detail. The signal sensing device 50 adopts a Hall sensor, which is used to sense the signal on the magnetic ring 30 to control the related functions. The sensing principle of the Hall sensor can adopt prior art.

[0038] Please refer to Figures 3-5The magnetic encoder further comprises a damping piece 70 arranged on the fixing member 40, and an elastic protrusion 71 is arranged on the damping piece 70, a plurality of limiting grooves 212 matched with the elastic protrusion 71 are arranged on the rotating support 20, and the limiting grooves 212 are used to generate resistance during rotation of the rotating support 20.

[0039] For details, please refer to Figure 3 A first placement groove 211 for placing the magnetic ring 30 is arranged on the rotating support 20, and the magnetic ring 30 is in the form of a circular ring and is directly fixed in the first placement groove 211, and a fixing method such as glue can be used; the signal sensing device 50 extends to the outside of the fixed support 10 through a lead part 51, wherein the signal sensing device 50 can be directly embedded on the fixed support 10, a second placement groove 18 for placing the signal sensing device 50 is arranged on the fixed support 10, a hole position through which the lead part 51 passes is arranged at the bottom of the second placement groove 18, the lead part 51 is connected with a circuit board after passing through, and the signal sensing device 50 is limited on the fixed support 10 after the fixing member 40 is installed in place; when the rotating support 20 rotates, the fixed support 10, the fixing member 40, the elastic piece 70 and the signal sensing device 50 remain stationary, the magnetic ring 30 rotates with the rotating support 20, the signal sensing device 50 recognizes different side magnetic signals to output corresponding electrical signals, and corresponding function control is achieved.

[0040] For details, please refer to Figure 1 、 2 The fixed support 10 comprises a first annular part 11 located on the inner side, a second annular part 12 located on the outer side and having a height lower than that of the first annular part 11, and a circular ring part 13 for connecting the first annular part 11 and the second annular part 12; the first annular part 11, the second annular part 12 and the circular ring part 13 form an annular groove. The first annular part 11, the second annular part 12 and the circular ring part 13 of the fixed support 10 can be integrally formed by an injection molding process.

[0041] For details, please refer to Figure 3 The rotating support 20 comprises a mounting part 21 for mounting the magnetic ring 30 and a rotating part 22 sleeved on the outside of the fixed support 10, and the mounting part 21 is located in the annular groove so as to be limited by the fixing member 40. The rotating part 22 is rotated, so that the mounting part 21 and the magnetic ring 30 are rotated together, the signal sensing device 50 senses the change of the magnetic ring 30 and outputs a corresponding signal; the limiting grooves 212 are arranged in a circumferential array, and the specific number is determined according to the number of small grids of the magnetic ring 30, and the limiting grooves 212 are located on the upper end face of the mounting part 21.

[0042] For details, please refer to Figure 2The fixing piece 40 comprises a limiting part 41 in the shape of a ring and a plurality of first buckles 42 arranged on the limiting part 41. The limiting part 41 is used to limit the mounting part 21 in the annular groove, and then the plurality of first buckles 42 are used for fixing, and the first buckles 42 buckle the circular ring part 13 and are located on the side away from the annular groove. That is, the limiting part 41 is sleeved outside the first annular part 11 of the fixing support 10, and then the first buckles 42 bypass the second annular part 12 and press on the circular ring part 13, thereby limiting the rotating part 22 of the rotating support 20, so that the rotating part 22 rotates in the annular groove. The damping sheet 70 is fixed below the limiting part 41, and the elastic protrusion 71 abuts downward on the limiting groove 212.

[0043] For details, please refer to Figure 2 The fixing support 10 is further provided with a containing groove 14 for embedding the first buckle 42. The first buckle 42 is in the shape of L and comprises a connecting part 421 connected with the limiting part 41, a buckling part 422 connected with the connecting part 421, and recessed parts 423 arranged on both sides of the connecting part 421 and the buckling part 422. The containing groove 14 is arranged on the circular ring part 13 and located on the side away from the annular groove. The connecting part 421 is perpendicular or tends to be perpendicular to the limiting part 41, the buckling part 422 is perpendicular or tends to be perpendicular to the connecting part 421, and the width of the buckling part 422 is smaller than that of the connecting part 421. Before buckling, the connecting part 421 and the buckling part 422 are located on the same plane and are both perpendicular to the limiting part 41. After the rotating support 20 is installed with the fixing support 10, the buckling part 422 is bent, so that the buckling part 422 is perpendicular to the connecting part 421 as much as possible. After being completely bent, the buckling part 422 is embedded in the containing groove 14. The recessed parts 423 are arranged to make the buckling part 422 more easily bent. After the buckling part 422 is embedded in the containing groove 14, a certain limiting effect can be achieved, and the buckling part 422 can also be prevented from being too high above the end surface of the fixing support 10. In order to better install the fixing piece 40, four first buckles 42 are arranged, and the limiting part 41 is sleeved outside the rotating part 22 of the rotating support 20.

[0044] For details, please refer to Figure 6 After the magnetic ring 30 is installed, the magnetic ring 30 is fixed by arranging the clamping protrusion 213 on the mounting part 21. Specifically, the clamping protrusion 213 is formed by melting through hot pressing, and a plurality of clamping protrusions 213 can be arranged according to needs.

[0045] The magnetic encoder further comprises a circuit board electrically connected with the signal sensing device 50; and the fixing piece 40 further comprises a second buckle 43 for mounting the circuit board.

[0046] For details, please refer to Figure 2The fixed bracket 10 is provided with several support platforms 15 for supporting the circuit board and several positioning posts 16 for positioning the circuit board during installation. Each positioning post 16 includes a support part 161 and a positioning part 162 disposed on the support part 161. After the circuit board is installed, the support platforms 15 and the support parts 161 provide support, while the positioning parts 162 provide positioning. Specifically, four support platforms 15 and three positioning posts 16 are provided to better support and position the circuit board.

[0047] Please refer to details. Figure 1 , 2 The inner side of the fixed bracket 10 is provided with a first slot 17 to prevent it from rotating; the outer side of the rotating bracket 20 is provided with a second slot 221 to drive it to rotate.

[0048] In summary, the magnetic encoder of this utility model, by setting a signal sensing device and a magnetic ring, wherein the signal sensing device is used to sense the position change of the magnetic ring, the magnetic field change is converted into an electrical signal, and the electrical signal is further processed to generate corresponding motion information or position information, thereby playing a control role. The magnetic ring and signal sensing device used make the magnetic encoder less susceptible to the influence of factors such as moisture, avoiding risks such as short circuits.

[0049] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A magnetic encoder, characterized by The magnetic encoder comprises: a fixed support; a rotating support arranged outside the fixed support and connected with the fixed support; a magnetic ring arranged on the rotating support; a fixing member arranged on the fixed support and limiting the rotating support on the fixed support; a signal sensing device arranged between the fixing member and the fixed support.

2. A magnetic encoder according to claim 1, characterised in that, The magnetic encoder further comprises a damping piece arranged on the fixing member, wherein an elastic protrusion is arranged on the damping piece, and a plurality of limiting grooves matched with the elastic protrusion are arranged on the rotating support, so that resistance is generated in the rotating process of the rotating support through the limiting grooves.

3. A magnetic encoder according to claim 1, characterised in that, The fixed support comprises a first annular part on the inner side, a second annular part on the outer side and with a height lower than the first annular part, and a circular ring part for connecting the first annular part and the second annular part.

4. A magnetic encoder according to claim 1, characterised in that, The rotating support comprises a mounting part for mounting the magnetic ring and a rotating part sleeved on the outer side of the fixed support.

5. A magnetic encoder according to claim 1, characterized in that The fixing member comprises a limiting part in a ring shape and a plurality of first buckles arranged on the limiting part.

6. A magnetic encoder according to claim 5, characterised in that, The fixed support is further provided with accommodating grooves for embedding the first buckles, and the first buckles are in an L shape, comprising a connecting part connected with the limiting part and a buckling part connected with the connecting part, and recessed parts are arranged on both sides of the connecting part and the buckling part.

7. A magnetic encoder according to claim 1, wherein, The magnetic encoder further comprises a circuit board for electrically connecting with the signal sensing device, and the fixing member further comprises a second buckle for mounting the circuit board.

8. A magnetic encoder according to claim 7, characterised in that, The fixed support is provided with a plurality of supporting tables for supporting the circuit board and a plurality of positioning columns for positioning the mounting of the circuit board, and the positioning column comprises a supporting part and a positioning part arranged on the supporting part.

9. A magnetic encoder according to claim 1, wherein, The inner side of the fixed support is provided with a first clamping groove for preventing rotation.

10. A magnetic encoder according to claim 1, characterized in that The outer side of the rotating support is provided with a second clamping groove for driving rotation.

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