CN214672056U - Novel accurate wire-wound potentiometer - Google Patents
Novel accurate wire-wound potentiometer Download PDFInfo
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- CN214672056U CN214672056U CN202120523887.8U CN202120523887U CN214672056U CN 214672056 U CN214672056 U CN 214672056U CN 202120523887 U CN202120523887 U CN 202120523887U CN 214672056 U CN214672056 U CN 214672056U
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Abstract
The utility model discloses a novel accurate wire-wound potentiometer, including input pivot, a housing, a brush subassembly and a cover plate, the input pivot is rotatably installed on the housing, the brush subassembly is installed on the input pivot in a matching way, the brush subassembly has a brush, a resistor body subassembly is also fixed in the installation cavity of the housing, the resistor body subassembly includes an insulation bush and a resistor body installed on the insulation bush, the insulation bush is fixed on the inner side wall of the housing, the resistor body includes a ring body and a resistance wire, the resistor body has two leading-out wires, a resistance wire part to be welded is arranged on the resistance wire, a welding center drawing wire is welded on the resistance wire part to be welded of the resistance wire; the end of the electric brush component is elastically contacted with the surface of the resistance wire, and a bearing is arranged in the mounting cavity of the shell. The utility model discloses welding draws forth welding center drawing line on the resistance wire as two-way pivoted signal reference point, can realize the purpose that two-way rotation angle displacement detected with high sensitivity.
Description
Technical Field
The utility model relates to a wire-wound potentiometre technical field especially relates to a novel accurate wire-wound potentiometre.
Background
The wire-wound potentiometer is a sensor which converts mechanical angular displacement into resistance or voltage output in a linear function relationship with the potentiometer through the potentiometer, and has the advantages of simple structure, high precision, light weight and stable performance. The electric brush of the traditional wire-wound potentiometer generally slides from one end of the resistor body to the other end of the resistor body in a contact manner and realizes the output of a resistance signal, so that the electric brush can only detect the mechanical rotation angular displacement in one direction and cannot be suitable for the detection of the angular displacement in two rotation directions, for example, the detection of the angular displacement in a positive direction or a reverse direction (also called clockwise direction or anticlockwise direction) is realized, and the prior art cannot well solve the problem of the detection of the angular displacement in the two directions.
SUMMERY OF THE UTILITY MODEL
Weak point to prior art exists, the utility model aims to provide a novel accurate wire-wound potentiometre can be adapted to two-way pivoted angle displacement and detect, and the welding is drawn forth welding center and is taken out the line as two-way pivoted signal reference point on the resistance wire, can realize the purpose that two-way rotation angle displacement detected with high sensitivity, has expanded the practical function and the applied scene of potentiometre.
The purpose of the utility model is realized through the following technical scheme:
a novel precision wire-wound potentiometer comprises an input rotating shaft, a shell, a brush assembly and a cover plate, wherein the shell is provided with an installation cavity, the input rotating shaft is rotatably installed on the shell, the cover plate covers the shell, the brush assembly is installed on the input rotating shaft in a matched mode, the brush assembly is arranged in the installation cavity of the shell and is provided with a brush, a resistor assembly is further fixed in the installation cavity of the shell and comprises an insulating bush and a resistor body installed on the insulating bush, the insulating bush is fixed on the inner side wall of the shell, the resistor body comprises a ring body and a resistance wire wound on the ring body, the resistor body is provided with two leading-out wires corresponding to the resistance wire, a resistance wire part to be welded is arranged on the resistance wire, and a welding center drawing wire is welded on the resistance wire part to be welded of the resistance wire; the end part of an electric brush of the electric brush component is in elastic electric contact with the surface of the resistance wire, and a bearing matched with the input rotating shaft is installed in the installation cavity of the shell.
In order to better realize the utility model discloses, treat that welding resistance wire position is located the middle resistance position of resistance wire.
The further technical scheme is as follows: and the welding center drawing line is fixedly bonded on the insulating bush through a plurality of epoxy fixing blocks B.
The further technical scheme is as follows: the welding center drawing wire comprises a core wire and an insulating layer wrapped outside the core wire, the end part of the welding center drawing wire is provided with a soldering end part electrically connected with the core wire, the soldering end part of the welding center drawing wire is fixedly welded with the part of the resistance wire to be welded of the resistance wire, and the core wire is a silver-plated copper wire with the diameter of 0.1 mm.
Preferably, the brush assembly is fixed on the input rotating shaft through an insulating sleeve, and a cover plate bearing matched with the end part of the input rotating shaft is arranged on the inner side of the cover plate.
Preferably, the input rotating shaft is sleeved with a sealing ring, the sealing ring is located in an installation cavity of the shell, and a stop ring is installed between the bearing and the sealing ring in a matched mode.
Preferably, the cover plate and the shell are fixedly connected through a plurality of countersunk head screws.
Compared with the prior art, the utility model, have following advantage and beneficial effect:
the utility model discloses can be adapted to two-way pivoted angle displacement and detect, welding is drawn forth welding center and is taken out the line as two-way pivoted signal reference point on the resistance wire, can realize two-way rotation angle displacement detection's purpose with high sensitivity, has expanded the practical function and the applied scene of potentiometre.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of the resistor element in fig. 1;
FIG. 3 is a schematic top view of the structure of FIG. 2;
FIG. 4 is a schematic view of a weld center pull line welding operation of FIG. 2;
fig. 5 is a schematic structural view of a weld center broken line.
Wherein, the names corresponding to the reference numbers in the drawings are:
1-input rotating shaft, 2-shell, 3-sealing ring, 4-stop ring, 5-bearing, 6-resistor component, 61-insulating bush, 62-ring body, 63-resistance wire, 631-epoxy fixing block A, 64-part of resistance wire to be welded, 65-welding center drawn wire, 651-epoxy fixing block B, 652-core wire, 653-insulating layer, 654-soldering end part, 66-leading-out wire, 7-insulating sleeve, 8-brush component, 9-cover plate and 10-countersunk head screw.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
examples
As shown in fig. 1 to 5, a novel precision wire-wound potentiometer comprises an input rotating shaft 1, a housing 2, a brush assembly 8 and a cover plate 9, wherein the housing 2 has an installation cavity, the input rotating shaft 1 is rotatably installed on the housing 2, the cover plate 9 covers the housing 2, the brush assembly 8 is fittingly installed on the input rotating shaft 1, the brush assembly 8 is arranged in the installation cavity of the housing 2, the brush component 8 is provided with a brush, a resistor component 6 is also fixed in the mounting cavity of the shell 2, the resistor component 6 comprises an insulation bush 61 and a resistor body arranged on the insulation bush 61, the insulation bush 61 is fixed on the inner side wall of the shell 2, the resistor body comprises a ring body 62 and a resistance wire 63 wound on the ring body 62, as shown in fig. 3, the resistor body has two lead wires 66 corresponding to the resistance wire 63, and the two lead wires 66 of the present embodiment are connected to both end portions of the resistance wire 63. The brush end of the brush assembly 8 is elastically contacted with the surface of the resistance wire 63, and a bearing 5 matched with the input rotating shaft 1 is arranged in the installation cavity of the shell 2.
The resistance wire 63 is provided with a resistance wire part 64 to be welded, and the resistance wire part 64 to be welded of the resistance wire 63 is welded with a welding center drawing wire 65. The resistance wire part 64 to be welded is located at the middle resistance value position of the resistance wire 63, in the embodiment, the diameter of the circular ring body 62 of the resistor body is 20mm, the resistance value of the whole resistance wire 63 is 10k omega, and the middle resistance value position of the resistance wire 63 is 5k omega, namely, the middle position of the resistance wire 63 is approximately used as the resistance wire part 64 to be welded of the welding center drawn wire 65.
As shown in fig. 2, the central lead 65 is fixed to the insulating bush 61 by bonding with a plurality of epoxy fixing blocks B651. As shown in FIG. 5, the welding center drawn wire 65 comprises a core wire 652 and an insulating layer 653 wrapped outside the core wire 652, the end of the welding center drawn wire 65 is provided with a soldering end 654 electrically connected with the core wire 652, the soldering end 654 of the welding center drawn wire 65 is fixedly welded with the part 64 of the resistance wire 63 to be welded, and the core wire 652 is a silver-plated copper wire with the diameter of 0.1 mm. The welding method comprises the following steps: firstly, removing an insulating layer 653 from the end part of a welding center drawing wire 65 formed by a silver-plated copper wire (namely, a core wire 652) with the diameter of 0.1mm, soldering the exposed end of the core wire 652 (namely, the silver-plated copper wire) by using an iron to form a soldering end part 654 for standby application, selecting a resistance wire to be welded at the center tapping of the wire-wound resistor body (namely, selecting or marking the position 64 of the resistance wire to be welded on the resistance wire 63), then the resistance wires 63 are respectively and reversely poked at the two sides of the resistance wire part 64 to be welded, the poked resistance wires 63 are fixed by epoxy resin (as shown in figures 2 and 4, the resistance wires 63 poked at the two sides of the resistance wire part 64 to be welded are respectively fixed by an epoxy fixing block A631), and then cleaning the part 64 of the resistance wire 63 to be welded, tinning the part 64 of the resistance wire 63 to be welded, and finally welding the end part of the welding central drawing wire 65 and the part 64 of the resistance wire to be welded together.
As shown in fig. 1, the brush assembly 8 of the present embodiment is fixed to the input shaft 1 through the insulating sleeve 7, and the cover plate 9 is provided with a cover plate bearing inside to match with the end of the input shaft 1. The input rotating shaft 1 of the embodiment is sleeved with a sealing ring 3, the sealing ring 3 is positioned in an installation cavity of the shell 2, and a stop ring 4 is installed between the bearing 5 and the sealing ring 3 in a matching manner. The cover plate 9 of the present embodiment is fixedly connected to the housing 2 by a plurality of countersunk head screws 10.
The utility model discloses welding center drawing wire 65 welds in the middle resistance position of resistance wire 63, and welding center drawing wire 65 and brush 8's brush difference output signal, and welding center drawing wire 65 is as referring to the benchmark signal value (for example setting for the zero value), and welding center drawing wire 65 falls into resistance wire 63 and controls two parts, and input pivot 1 forward input rotates or reverse input rotates, and the homoenergetic realizes angle displacement signal output.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a novel accurate wire-wound potentiometre, including input pivot (1), casing (2), brush subassembly (8) and apron (9), casing (2) have the installation cavity, input pivot (1) rotate and install on casing (2), apron (9) lid fits on casing (2), brush subassembly (8) cooperation is installed on input pivot (1), the installation cavity of casing (2) is arranged in brush subassembly (8), brush subassembly (8) have the brush, its characterized in that: a resistor body assembly (6) is further fixed in the installation cavity of the shell (2), the resistor body assembly (6) comprises an insulation bushing (61) and a resistor body arranged on the insulation bushing (61), the insulation bushing (61) is fixed on the inner side wall of the shell (2), the resistor body comprises a ring body (62) and a resistance wire (63) wound on the ring body (62), the resistor body is provided with two leading-out wires (66) corresponding to the resistance wire (63), a resistance wire part (64) to be welded is arranged on the resistance wire (63), and a welding center drawing wire (65) is welded on the resistance wire part (64) to be welded of the resistance wire (63); the end part of an electric brush of the electric brush component (8) is in elastic electric contact with the surface of the resistance wire (63), and a bearing (5) matched with the input rotating shaft (1) is installed in an installation cavity of the shell (2).
2. A novel precision wire-wound potentiometer according to claim 1, wherein: the part (64) of the resistance wire to be welded is positioned at the middle resistance value position of the resistance wire (63).
3. A novel precision wire-wound potentiometer according to claim 1 or 2, wherein: the welding center drawing line (65) is fixedly bonded on the insulating bush (61) through a plurality of epoxy fixing blocks B (651).
4. A novel precision wire-wound potentiometer according to claim 3, wherein: the welding center drawn wire (65) comprises a core wire (652) and an insulating layer (653) wrapping the core wire (652), the end part of the welding center drawn wire (65) is provided with a soldering end part (654) electrically connected with the core wire (652), the soldering end part (654) of the welding center drawn wire (65) is fixedly welded with a resistance wire part (64) to be welded of the resistance wire (63), and the core wire (652) is a silver-plated copper wire with the diameter of 0.1 mm.
5. A novel precision wire-wound potentiometer according to claim 1, wherein: the electric brush assembly (8) is fixed on the input rotating shaft (1) through an insulating sleeve (7), and a cover plate bearing matched with the end part of the input rotating shaft (1) is arranged on the inner side of the cover plate (9).
6. A novel precision wire-wound potentiometer according to claim 1 or 5, wherein: the input rotating shaft (1) is sleeved with a sealing ring (3), the sealing ring (3) is located in an installation cavity of the shell (2), and a stop ring (4) is installed between the bearing (5) and the sealing ring (3) in a matched mode.
7. A novel precision wire-wound potentiometer according to claim 1, wherein: the cover plate (9) is fixedly connected with the shell (2) through a plurality of countersunk head screws (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523887.8U CN214672056U (en) | 2021-03-12 | 2021-03-12 | Novel accurate wire-wound potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120523887.8U CN214672056U (en) | 2021-03-12 | 2021-03-12 | Novel accurate wire-wound potentiometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214672056U true CN214672056U (en) | 2021-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120523887.8U Active CN214672056U (en) | 2021-03-12 | 2021-03-12 | Novel accurate wire-wound potentiometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214672056U (en) |
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2021
- 2021-03-12 CN CN202120523887.8U patent/CN214672056U/en active Active
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