Angle sensor

Abstract

The utility model discloses an angle sensor, which comprises a shell, a fixing ring, a first stator, a second stator, a resolving plate and a rotor, the fixing ring is arranged on the inner side of the shell, a first step is arranged at the upper end of the fixing ring, and a second step is arranged at the lower end of the fixing ring; the first stator is in a circular ring shape, and the first stator is arranged on the first step; the second stator is in a circular ring shape, the second stator is arranged on the second step, and the second stator is electrically connected with the first stator; the resolving board is arranged on the lower end face of the second stator, and the resolving board is electrically connected with the second stator; the rotor comprises a rotating ring part and a rotating cylinder part, the rotating ring part is arranged between the first stator and the second stator, and the two ends of the rotating cylinder part extend out of the middle of the first stator and the middle of the second stator respectively.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to an angle sensor. Background Art

[0002] The working principle of an angle sensor is based on a sensitive element to sense the position change of a rotating bearing, and uses principles such as capacitance, inductance, Hall effect, and photoelectric effect for measurement. When rotation occurs, the signal detected by the sensitive element also changes, and finally outputs in the form of a digital or analog signal. Angle sensors are widely used, including but not limited to fields such as geography, civil use, and industry.

[0003] An angle sensor mainly includes two parts: a stator and a rotor. Its measurement method is to install the rotor on the measured rotating part and the stator on the fixed part. The rotation of the measured rotating part drives the rotor to move, and the rotation angle of the measured moving part is reflected in the rotation angle of the rotor relative to the stator.

[0004] However, most of the existing angle sensors have a loose structure and are not compact enough, resulting in a larger axial dimension and unable to be installed in equipment with a narrow space, thus unable to meet the application requirements in special occasions. Content of the Utility Model

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide an angle sensor to solve the technical problem of loose structure existing in the prior art.

[0006] The utility model is implemented by adopting the following technical scheme: an angle sensor, comprising a housing, a fixing ring, a first stator, a second stator, a resolution board, and a rotor;

[0007] The fixing ring is arranged inside the housing. A first step is provided at the upper end of the fixing ring, and a second step is provided at the lower end of the fixing ring;

[0008] The first stator is in a circular ring shape and is arranged on the first step;

[0009] The second stator is in a circular ring shape and is arranged on the second step, and the second stator is electrically connected to the first stator;

[0010] The resolution board is arranged on the lower end face of the second stator, and the resolution board is electrically connected to the second stator;

[0011] The rotor includes a rotating ring part and a rotating cylinder part. The rotating ring part is arranged between the first stator and the second stator, and both ends of the rotating cylinder part extend out from the middle parts of the first stator and the second stator respectively.

[0012] In a possible implementation, an elastic clip is provided on the outer side wall of the fixed ring. The upper end of the elastic clip abuts against the first stator, and the lower end of the elastic clip abuts against the second stator.

[0013] In a possible implementation, a limiting groove is provided on the outer side wall of the fixed ring, and the elastic clip is arranged in the limiting groove.

[0014] In a possible implementation, a first wiring portion is provided on the first stator, a second wiring portion is provided on the second stator, a third wiring portion is provided on the resolver board, a wire hole is provided on the first wiring portion, and wire grooves are provided on both the second wiring portion and the third wiring portion.

[0015] In a possible implementation, an avoidance groove is provided on the inner wall of the housing, and the first wiring portion, the second wiring portion, and the third wiring portion all extend into the avoidance groove.

[0016] In a possible implementation, a first connection portion is provided on the outer side wall of the fixed ring, a first connection hole is provided on the first connection portion, a second connection portion is provided on the outer side wall of the housing, a second connection hole is provided on the second connection portion, and the first connection hole corresponds to the second connection hole.

[0017] In a possible implementation, a third connection hole is further provided on the second connection portion, and the third connection hole is used to connect an external fixing member.

[0018] In a possible implementation, a positioning groove is provided on the side wall of the housing, and the first connection portion extends into the positioning groove.

[0019] In a possible implementation, the top end of the housing has a top ring portion, and the top ring portion covers the first stator.

[0020] In a possible implementation, a wire is provided on the resolver board, and the wire is used to connect an external component.

[0021] Compared with the prior art, the beneficial effects of the present utility model are as follows: The housing is used to connect an external fixing member, the rotor is used to connect an external rotating member, the fixed ring is fixedly connected to the housing, and the settings of the first step and the second step on the fixed ring can provide an installation basis for the first stator and the second stator, and leave a fixed gap between the first stator and the second stator, so that while the rotor can rotate smoothly, the compactness among the first stator, the second stator, and the rotor is improved, and further the axial dimension of the sensor is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the angle sensor of the present utility model;

[0023] Figure 2 is an exploded view of the angle sensor of the present utility model;

[0024] Figure 3 is a schematic structural view of the angle sensor of the present utility model with the housing hidden.

[0025] In the figure:

[0026] 100, housing; 101, avoidance groove; 102, second connecting part; 103, second connecting hole; 104, third connecting hole; 105, positioning groove; 106, top ring part;

[0027] 200, fixing ring; 201, limiting groove; 202, first connecting part; 203, first connecting hole;

[0028] 300, first stator; 301, first wiring part;

[0029] 400, second stator; 401, second wiring part;

[0030] 500, resolution board; 501, third wiring part; 502, wire;

[0031] 600, rotor; 601, rotating ring part; 602, rotating cylinder part;

[0032] 700, elastic clip. Specific embodiments

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, the descriptions involving "first", "second", etc. in this application are only for descriptive purposes, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0036] As Figures 1-3 shown, an angle sensor includes a housing 100, a fixing ring 200, a first stator 300, a second stator 400, a resolution board 500, and a rotor 600. The fixing ring 200 is disposed inside the housing 100. A first step is provided at the upper end of the fixing ring 200, and a second step is provided at the lower end of the fixing ring 200. The first stator 300 is in a circular ring shape and is disposed on the first step. The second stator 400 is in a circular ring shape and is disposed on the second step, and the second stator 400 is electrically connected to the first stator 300. The resolution board 500 is disposed on the lower end surface of the second stator 400, and the resolution board 500 is electrically connected to the second stator 400. The rotor 600 includes a rotating ring portion 601 and a rotating cylinder portion 602. The rotating ring portion 601 is disposed between the first stator 300 and the second stator 400, and both ends of the rotating cylinder portion 602 extend out from the middle parts of the first stator 300 and the second stator 400 respectively. It should be noted that during installation, it is necessary to ensure that the rotor 600, the first stator 300, and the second stator 400 are coaxially installed. The rotating ring portion 601 of the rotor 600 is located between the first stator 300 and the second stator 400. The rotating cylinder portion 602 is in a cylindrical shape, and both ends of the rotating cylinder portion 602 extend out from the centers of the first stator 300 and the second stator 400. The housing 100 is used to connect external fixing parts, and the rotor 600 is used to connect external rotating parts. The fixing ring 200 is fixedly connected to the housing 100. The provisions of the first step and the second step on the fixing ring 200 can provide an installation basis for the first stator 300 and the second stator 400, and leave a fixed gap between the first stator 300 and the second stator 400, enabling the rotor 600 to rotate smoothly while improving the compactness among the first stator 300, the second stator 400, and the rotor 600, thereby reducing the axial dimension of the sensor.

[0037] Specifically, the first stator 300 is an electric field receiver, the second stator 400 is an electric field transmitter, a modulated electric field pattern is provided on the rotor 600, and a settlement circuit and a digital-to-analog conversion circuit are provided on the solver board 500. The stator transmits an electric field signal to the rotor 600 and receives a returned signal for processing. When in use, the stator electric field is adjusted to change regularly by rotating the rotor 600, and finally the regularly changing electric field signal is converted into a sine and cosine signal by the solver circuit on the solver board 500, and then further resolved into an angle digital quantity by the digital-to-analog conversion circuit, and outputted using a corresponding communication protocol.

[0038] Please refer to Figure 3 In a possible embodiment, an elastic clip 700 is provided on the outer wall of the fixing ring 200, the upper end of the elastic clip 700 is in contact with the first stator 300, and the lower end of the elastic clip 700 is in contact with the second stator 400. It should be noted that during assembly, it is only necessary to place the first stator 300 on the first step, and then place the second stator 400 on the second step, and then use the elastic clip 700 to clamp the fixing ring 200, the first stator 300 and the second stator 400. In addition, the number of elastic clips 700 can be freely set according to actual needs. The housing 100 is arranged on the outer side of the fixing ring 200, which can provide protection for the fixing ring 200 and the elastic clip 700, and ensure that the elastic clip 700 will not be separated from the fixing ring 200, which greatly improves the overall stability of the stator. During disassembly, it is only necessary to remove the housing 100 first and then remove the elastic clip 700, which is very convenient.

[0039] Please refer to Figure 2 In a possible implementation, a limiting groove 201 is provided on the outer wall of the fixing ring 200, and the elastic clip 700 is arranged in the limiting groove 201. It is easy to understand that the setting of the limiting groove 201 can limit the elastic clip 700, and the elastic clip 700 is located in the limiting groove 201 to prevent the elastic clip 700 from displacement, which is beneficial to improving the structural stability of the elastic clip 700. In addition, the limiting groove 201 can also play a positioning role for the elastic clip 700. When the user installs the elastic clip 700, it only needs to be directly installed according to the position of the limiting groove 201, which is beneficial to improving the installation efficiency of the elastic clip 700.

[0040] Please refer to Figure 2 and Figure 3, in a possible implementation, a first wiring portion 301 is provided on the first stator 300, a second wiring portion 401 is provided on the second stator 400, and a third wiring portion 501 is provided on the resolver board 500. A wire hole is provided on the first wiring portion 301, and wire grooves are provided on both the second wiring portion 401 and the third wiring portion 501. It is easy to understand that the first stator 300, the second stator 400, and the resolver board 500 need to be electrically connected. The first wiring portion 301, the second wiring portion 401, and the third wiring portion 501 can provide an installation base for the wires. Moreover, the arrangement of the wire hole and the wire grooves can limit the wires, enabling the wires to be arranged orderly.

[0041] Please refer to Figure 2 , in a possible implementation, an avoidance groove 101 is provided on the inner wall of the housing 100, and the first wiring portion 301, the second wiring portion 401, and the third wiring portion 501 all extend into the avoidance groove 101. It is easy to understand that the first wiring portion 301, the second wiring portion 401, and the third wiring portion 501 are all in a convex shape, and there is a notch on the side wall of the fixing ring 200 to enable the first wiring portion 301, the second wiring portion 401, and the third wiring portion 501 to extend into the avoidance groove 101. Moreover, the setting of the notch can also position the first stator 300 and the second stator 400, facilitating the user to install quickly and accurately.

[0042] Please refer to Figure 1 and Figure 3 , in a possible implementation, a first connection portion 202 is provided on the outer side wall of the fixing ring 200, a first connection hole 203 is provided on the first connection portion 202, a second connection portion 102 is provided on the outer side wall of the housing 100, a second connection hole 103 is provided on the second connection portion 102, and the first connection hole 203 corresponds to the second connection hole 103. It should be noted that by using a fastening bolt to pass through the first connection hole 203 and the second connection hole 103 in sequence, the first connection portion 202 and the second connection portion 102 are fixedly connected, thereby realizing the fixed connection between the fixing ring 200 and the housing 100.

[0043] Please refer to Figure 1 , in a possible implementation, a third connection hole 104 is further provided on the second connection portion 102, and the third connection hole 104 is used to connect an external fixing member. It is easy to understand that the third connection hole 104 is arranged side by side with the second connection hole 103, and the third connection hole 104 is also used to connect a bolt, and the housing 100 is fixedly connected to the external fixing member through the bolt.

[0044] Please refer to Figure 2, in a possible implementation, a positioning groove 105 is provided on the side wall of the outer shell 100, and the first connecting portion 202 extends into the positioning groove 105. It is easy to understand that the positioning groove 105 is located below the second connecting portion 102. When installing the fixing ring 200, the first connecting portion 202 extends into the positioning groove 105, so that the first connecting portion 202 corresponds to the second connecting portion 102. And since the first connecting portion 202 protrudes from the outer side wall of the fixing ring 200, and the fixing ring 200 needs to be installed inside the outer shell 100, therefore, the positioning groove 105 can play a role in avoiding the first connecting portion 202, enabling the fixing ring 200 to completely enter the outer shell 100, which is beneficial to improving the overall structural compactness of the sensor.

[0045] Please refer to Figure 2 , in a possible implementation, the top end of the outer shell 100 has a top ring portion 106, and the top ring portion 106 covers the first stator 300. It is easy to understand that the setting of the top ring portion 106 can play a role in protecting the first stator 300, avoiding the first stator 300 from being collided, which is beneficial to improving the service life of the first stator 300.

[0046] Please refer to Figure 3 , in a possible implementation, a wire 502 is provided on the solving board 500, and the wire 502 is used to connect external components. It is easy to understand that the wire 502 on the solving board 500 is used to connect external devices, and there is a notch on the outer shell 100 for the wire 502 to pass through.

[0047] The above-mentioned implementation manners are only the preferred implementation manners of the present utility model, and cannot be used to limit the scope of protection of the present utility model. Any non-substantial changes and substitutions made by those skilled in the art based on the present utility model belong to the scope of protection required by the present utility model.

Claims

1. An angle sensor, characterized in that: It includes a housing, a fixing ring, a first stator, a second stator, a solver plate and a rotor; The fixing ring is arranged on the inner side of the housing, the upper end of the fixing ring is provided with a first step, and the lower end of the fixing ring is provided with a second step; The first stator is in a circular ring shape, and the first stator is arranged on the first step; The second stator is in a circular ring shape, is disposed on the second step, and is electrically connected to the first stator; The solver plate is disposed on the lower end surface of the second stator, and the solver plate is electrically connected to the second stator; The rotor comprises a rotating ring portion and a rotating drum portion. The rotating ring portion is arranged between the first stator and the second stator. Two ends of the rotating drum portion extend from the middle portions of the first stator and the second stator respectively.

2. The angle sensor according to claim 1, characterized in that: An elastic clip is provided on the outer side wall of the fixing ring, the upper end of the elastic clip abuts against the first stator, and the lower end of the elastic clip abuts against the second stator.

3. The angle sensor according to claim 2, characterized in that: A limiting groove is provided on the outer side wall of the fixing ring, and the elastic clip is arranged in the limiting groove.

4. The angle sensor according to claim 1, characterized in that: The first stator is provided with a first wiring portion, the second stator is provided with a second wiring portion, the solver board is provided with a third wiring portion, the first wiring portion is provided with a wire hole, and the second wiring portion and the third wiring portion are both provided with a wire groove.

5. The angle sensor according to claim 4, characterized in that: An avoidance groove is provided on the inner wall of the shell, and the first wiring portion, the second wiring portion and the third wiring portion all extend into the avoidance groove.

6. The angle sensor according to claim 1, characterized in that: A first connection portion is provided on the outer wall of the fixing ring, a first connection hole is provided on the first connection portion, a second connection portion is provided on the outer wall of the shell, a second connection portion is provided on the second connection portion, and the first connection hole corresponds to the second connection hole.

7. The angle sensor according to claim 6, characterized in that: The second connecting portion is also provided with a third connecting hole, and the third connecting hole is used to connect an external fixing member.

8. The angle sensor according to claim 6, characterized in that: A positioning groove is provided on the side wall of the shell, and the first connecting part extends into the positioning groove.

9. The angle sensor according to claim 1, characterized in that: The housing has a top ring portion at a top end thereof, and the top ring portion covers the first stator.

10. The angle sensor according to claim 1, characterized in that: The solver board is provided with a wire, and the wire is used to connect an external component.

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