CN216645219U - Miniature potentiometer type angle sensor - Google Patents
Miniature potentiometer type angle sensor Download PDFInfo
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- CN216645219U CN216645219U CN202123196935.6U CN202123196935U CN216645219U CN 216645219 U CN216645219 U CN 216645219U CN 202123196935 U CN202123196935 U CN 202123196935U CN 216645219 U CN216645219 U CN 216645219U
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- angle sensor
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- electric brush
- type angle
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Abstract
The utility model discloses a miniature potentiometer type angle sensor, wherein a shell comprises an upper shell and a bottom cover; the substrate is fixedly arranged in the bottom cover, one surface of the substrate is provided with a resistance card, and the other surface of the substrate is provided with a wiring conducting strip; the resistance card is an arc annular resistance card, and two ends of the resistance card are connected with conducting strips; the conducting strips comprise a first conducting strip and a second conducting strip which are connected with the wiring conducting strip; the rotating piece is fixedly provided with an electric brush which is connected with the resistance sheet and the conducting sheet, and when the electric brush rotates on the resistance sheet and the conducting sheet through the rotating piece, the resistance value between the first conducting sheet and the second conducting sheet can be changed. Compared with the prior art, the utility model has the following advantages: the potentiometer type angle sensor substrate is very stable to mount in the shell, and has high sealing performance and high working stability. Meanwhile, the rotation angle measurement with high precision can be realized through few parts of the product, the product volume can be extremely miniaturized, and the design requirement of a miniaturized product is met.
Description
Technical Field
The utility model relates to the technical field of potentiometers, in particular to a miniature potentiometer type angle sensor.
Background
The potentiometer can convert a mechanical angle signal into an electric signal to be output, has the characteristics of stable performance, simple structure and lower cost, and is widely used in the fields of industry and national defense and military industry. Chinese patent publication No. CN112038027A discloses a high-precision rotation angle sensor and a method for manufacturing a resistance sensor thereof, which includes a housing, an end cap, a resistance sensor, an electric brush, a signal leading-out slip ring, a first bearing, a second bearing, a transmission shaft, and insulating ceramics; the shell and the end cover installed at the top of the shell form a cylinder with a cavity inside, a first bearing and a second bearing are installed inside the shell bottom and the end cover respectively, a transmission rotating shaft penetrates through a through hole in the center of the shell and the end cover, the first bearing, insulating ceramics, a signal leading-out slip ring, an electric brush and the second bearing are sequentially sleeved on the transmission rotating shaft from the bottom of the shell to the direction of the end cover, a resistance sensitive element is sintered inside the shell, when the transmission rotating shaft rotates, the transmission rotating shaft drives the rigidly connected electric brush to slide on the surface of the resistance sensitive element, the rotation angle of the electric brush is in direct proportion to the resistance between the electric brush and a reference point, the angle value of the transmission rotating shaft is obtained by measuring the change of the resistance between the electric brush and the reference point, and the measurement principle is simple, miniaturized and light.
The high-precision rotation angle sensor disclosed in the above patent has further optimized space in terms of the number of parts, working stability and product volume. It is therefore an object of the present invention to provide a miniature potentiometer-type angle sensor that operates more stably.
Disclosure of Invention
It is an object of the present invention to overcome the problems of the prior art and to provide a miniature potentiometer-type angle sensor.
In order to achieve the purpose, the utility model adopts the following scheme:
a miniature potentiometer-style angle sensor comprising:
the shell comprises an upper shell and a bottom cover;
the substrate is fixedly arranged in the bottom cover, one surface of the substrate is provided with a resistor disc, and the other surface of the substrate is provided with a wiring conducting sheet;
the conducting strip is connected with the wiring conducting strip and comprises a first annular conducting strip and a second annular conducting strip which are connected with the wiring conducting strip;
the resistance card is an arc annular resistance card and is arranged outside the first conducting strip, and two ends of the resistance card are connected with second conducting strips;
the rotating piece is fixedly provided with an electric brush which is connected with the resistor disc and the conducting strips, and when the electric brush rotates on the resistor disc and the conducting strips through the rotating piece, the resistance value between the first conducting strip and the second conducting strip can be changed.
Furthermore, a connecting hole is arranged on the substrate, and the wiring conducting strip is connected with the conducting strip on the other surface of the insulating substrate through the connecting hole.
Furthermore, the wiring conducting strip is connected with a wiring terminal, and the wiring conducting strip comprises a first wiring conducting strip connected with the first conducting strip and a second wiring conducting strip connected with the second conducting strip.
Further, the connecting terminal comprises a first connecting terminal connected with the first connecting conducting strip and a second connecting terminal connected with the second connecting conducting strip.
Further, the rotating piece comprises a rotating shaft and a rotating disc, a limiting hole for inserting the rotating shaft is formed in the middle of the rotating disc, a knob extending out of the upper shell is arranged at one end of the rotating shaft and connected with the other end of the limiting hole in a fixed mode, a mounting groove used for mounting a waterproof ring is formed in the middle of the rotating shaft, and the rotating shaft is in interference fit with the inner wall of the upper shell through the waterproof ring.
Furthermore, a straight clamping groove is formed in the top of the knob, and anti-skid grains are formed in the side face of the knob.
Furthermore, a first limiting block is arranged on the rotary table, a second limiting block corresponding to the first limiting block is arranged in the upper shell, and the upper shell limits the rotation angle of the rotary table through the second limiting block.
Further, still be equipped with the copper backing plate around the conducting strip on the base plate, base plate accessible backing plate is steadily placed in the bottom and is shielded electromagnetic interference. The copper base plate can be used for flatly covering the bottom of the substrate provided with the conducting plate, and can be used for shielding part of electromagnetic interference from the lower part of the bottom cover, so that the working stability of the potentiometer type angle sensor is further improved.
Furthermore, the bottom cover is provided with a connecting convex strip for connecting the upper shell, the edge of the bottom of the upper shell is provided with a connecting clamping groove for clamping the connecting convex strip, and a blocking and pressing strip is arranged at the position of the bottom cover corresponding to the wiring terminal. When the bottom is connected with the upper shell, after glue is placed into the connecting clamping groove, the connecting convex strip of the bottom is aligned with the connecting clamping groove and compressed, and the stop pressing strip arranged above the wiring terminal can prevent the glue from flowing into the wiring terminal or the wiring conducting strip, so that poor contact is prevented.
Furthermore, a clamping column for installing the electric brush is arranged on the rotary table, the electric brush is fixedly connected with the rotary table through the clamping column, and the electric brush is a rake-shaped hook-shaped electric brush. The rake-shaped hook-shaped electric brush is contacted with the resistance chip through the V-shaped part, so that the resistance chip can be prevented from being damaged after the electric brush slides and rubs on the resistance chip for many times, the stability of a product is improved, and the service life of the product is prolonged.
Compared with the prior art, the utility model has the following advantages: the potentiometer type angle sensor substrate is very stable to mount in the shell, and has high sealing performance and high working stability. Meanwhile, the rotation angle measurement with high precision can be realized through few parts of the product, the product volume can be extremely miniaturized, and the design requirement of a miniaturized product is met.
Drawings
The present application will be described in further detail with reference to the following drawings and detailed description.
Fig. 1 is a schematic view of the overall structure of a miniature potentiometer-type angle sensor according to the present invention.
Fig. 2 is a schematic diagram of a substrate structure of a micro-potentiometer type angle sensor according to the present invention.
Fig. 3 is a schematic structural view of an upper housing of a micro-potentiometer type angle sensor according to the present invention.
Fig. 4 is a schematic structural diagram of a bottom cover of the micro-potentiometer type angle sensor of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.
As shown in fig. 1 to 4, a micro-potentiometer type angle sensor includes:
a miniature potentiometer-style angle sensor comprising:
the shell 1, the shell 1 includes upper casing 101 and bottom cover 102;
a substrate 2, as shown in fig. 2 and 4, the substrate 2 is fixedly arranged in the bottom cover 102, one side of the substrate 2 is provided with a resistor disc 3, and the other side of the conductive sheet 4 is provided with a wiring conductive sheet 9;
the resistance chip 3 is an arc ring-shaped resistance chip 3, and two ends of the resistance chip 3 are connected with a second conductive sheet 402;
as shown in fig. 4, the conductive sheets 4 include a first conductive sheet 401 and a second conductive sheet 402 connected to the connection conductive sheet 4, 2 second conductive sheets 402 are respectively disposed at two ends of the resistor sheet 3, and the first conductive sheet 401 and the second conductive sheet 402 are both connected to the connection conductive sheet 9 on the other side of the substrate 2 through the connection hole 201;
and the rotating member 7 is fixedly provided with a brush 6 for connecting the resistor disc 3 and the conducting plate 4, and when the brush 6 rotates on the resistor disc 3 and the conducting plate 4 through the rotating member 7, the resistance value between the first conducting plate 401 and the second conducting plate 402 can be changed, so that the rotation information of the rotating member 7 is converted into an electric signal.
Preferably, the substrate 2 is provided with a connection hole 201, and the connection conductive sheet 4 is connected to the conductive sheet 4 on the other surface of the insulating substrate 2 through the connection hole 201.
Preferably, as shown in fig. 2, the wiring conductive sheet 4 is connected with a wiring terminal, and the wiring conductive sheet 4 includes a first wiring conductive sheet 901 connected with the first conductive sheet 401 and a second wiring conductive sheet 902 connected with the second conductive sheet 402.
Preferably, the connection terminals include a first connection terminal 501 connected to the first connecting conductive sheet 4 and a second connection terminal 502 connected to the second connecting conductive sheet 4.
Preferably, the rotating member 7 includes a rotating shaft 701 and a rotating disc 702, a limiting hole 706 for inserting the rotating shaft 701 is disposed in the middle of the rotating disc 702, one end of the rotating shaft 701 is fixedly connected to the limiting hole 706, the other end of the rotating shaft 701 is provided with a knob 704 extending out of the upper housing 101, an installation groove for installing a waterproof ring 707 is disposed in the middle of the rotating shaft 701, and the rotating shaft 701 is in interference fit with the inner wall of the upper housing 101 through the waterproof ring 707.
Preferably, as shown in fig. 4, a straight-line slot 703 is formed at the top of the knob 704, and anti-slip threads are formed on the side surface of the knob 704.
Preferably, as shown in fig. 1, a first limiting block 705 is disposed on the turntable 702, a second limiting block corresponding to the first limiting block 705 is disposed in the upper casing 101, and the upper casing 101 limits the rotation angle of the turntable 702 through the second limiting block.
Preferably, a copper pad 8 is further disposed on the substrate 2 around the conductive sheet 4, and the substrate 2 can be stably placed in the bottom cover 102 through the copper pad 8 and can shield electromagnetic interference. The copper backing plate 8 can be used for flatly backing the bottom of the substrate 2 provided with the conducting plate 4 on one hand and shielding part of electromagnetic interference from the lower part of the bottom cover 102 on the other hand, so that the working stability of the potentiometer type angle sensor is further improved.
Preferably, as shown in fig. 1 and 4, a bottom cover 102 is provided with a connecting protruding strip 103 for connecting the upper housing 101, a connecting slot 105 into which the connecting protruding strip 103 can be inserted is provided at the edge of the bottom of the upper housing 101, and a retaining and pressing strip 104 is provided at the position of the bottom cover 102 corresponding to the terminal. When the bottom cover 102 is connected with the upper shell 101, after glue is put into the connecting clamping groove 105, the connecting convex strip 103 of the bottom cover 102 is aligned with the connecting clamping groove 105 and pressed tightly, and at the moment, the blocking and pressing strip 104 arranged above the wiring terminal can prevent the glue from flowing into the wiring terminal 5 or the wiring conducting strip 9, so that poor contact is prevented.
Preferably, as shown in fig. 3, a clamping column 706 for mounting the electric brush 6 is arranged on the turntable 702, the electric brush 6 is fixedly connected with the turntable 702 through the clamping column 706, and the electric brush 6 is a rake-shaped hook-shaped electric brush 6. The harrow-shaped hook-shaped electric brush 6 is contacted with the resistor disc 3 through the V-shaped part, so that the electric brush 6 can be prevented from damaging the resistor disc 3 after sliding friction on the resistor disc 3 for many times, the stability of a product is improved, and the service life of the product is prolonged.
Compared with the prior art, the utility model has the following advantages: the potentiometer type angle sensor substrate 2 is very stable to mount in the shell 1, and has high sealing performance and high working stability. Meanwhile, the rotation angle measurement with high precision can be realized through few parts of the product, the product volume can be extremely miniaturized, and the design requirement of a miniaturized product is met.
The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.
Claims (10)
1. A miniature potentiometer-style angle sensor, comprising:
a housing including an upper housing and a bottom cover;
the substrate is fixedly arranged in the bottom cover, one surface of the substrate is provided with a resistance chip, and the other surface of the substrate is provided with a wiring conducting chip;
the conducting strip is connected with the wiring conducting strip and comprises a first annular conducting strip and a second annular conducting strip which are connected with the wiring conducting strip;
the resistor disc is an arc annular resistor disc, and two ends of the resistor disc are connected with second conducting strips;
and the rotating piece is fixedly provided with an electric brush connected with the resistance chip and the conducting chip, and when the electric brush rotates on the resistance chip and the conducting chip through the rotating piece, the resistance value between the first conducting chip and the second conducting chip can be changed.
2. The micropotentiometrical angle sensor of claim 1, wherein the substrate is provided with a connection hole, and the wiring conductive sheet is connected with a conductive sheet on the other surface of the substrate through the connection hole.
3. A miniature potentiometer type angle sensor according to claim 1 or 2, wherein the connecting conductive pads are connected with connecting terminals, and the connecting conductive pads comprise a first connecting conductive pad connected with the first conductive pad and a second connecting conductive pad connected with the second conductive pad.
4. A miniature potentiometer-type angle sensor according to claim 3, wherein the connecting terminals comprise a first connecting terminal connected to the first connecting conductive tab and a second connecting terminal connected to the second connecting conductive tab.
5. The micropotentiometre-type angle sensor of claim 1, wherein the rotating member comprises a rotating shaft and a rotating disc, a limiting hole for the rotating shaft to be inserted is arranged in the middle of the rotating disc, a knob extending out of the upper shell is arranged at one end of the rotating shaft and at the other end of the rotating shaft, which is fixedly connected with the limiting hole, a mounting groove for mounting a waterproof ring is arranged in the middle of the rotating shaft, and the rotating shaft is in interference fit with the inner wall of the upper shell through the waterproof ring.
6. The corner sensor according to claim 5, wherein the knob has a slot at the top and anti-slip threads on the side.
7. The miniature potentiometer-type angle sensor according to claim 5, wherein a first limiting block is arranged on the turntable, a second limiting block corresponding to the first limiting block is arranged in the upper housing, and the upper housing limits the rotation angle of the turntable through the second limiting block.
8. A micro-potentiometer type angle sensor according to claim 1, characterized in that the substrate is further provided with a copper pad surrounding the conductive sheet, through which the substrate can be placed stably in the bottom cover and shielded from electromagnetic interference.
9. The micro potentiometer type angle sensor according to claim 4, wherein the bottom cover is provided with a connecting convex strip for connecting the upper housing, a connecting slot for the connecting convex strip to be inserted into is arranged at the edge of the bottom of the upper housing, and a stop and press strip is arranged at the position of the bottom cover corresponding to the connecting terminal.
10. The miniature potentiometer type angle sensor according to claim 5, wherein a clamping column for mounting an electric brush is arranged on the turntable, the electric brush is fixedly connected with the turntable through the clamping column, and the electric brush is a rake-shaped hook type electric brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123196935.6U CN216645219U (en) | 2021-12-17 | 2021-12-17 | Miniature potentiometer type angle sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123196935.6U CN216645219U (en) | 2021-12-17 | 2021-12-17 | Miniature potentiometer type angle sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216645219U true CN216645219U (en) | 2022-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123196935.6U Active CN216645219U (en) | 2021-12-17 | 2021-12-17 | Miniature potentiometer type angle sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216645219U (en) |
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2021
- 2021-12-17 CN CN202123196935.6U patent/CN216645219U/en active Active
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