CN211858289U - Precision potentiometer shell assembly with limiting function - Google Patents
Precision potentiometer shell assembly with limiting function Download PDFInfo
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- CN211858289U CN211858289U CN202020786284.2U CN202020786284U CN211858289U CN 211858289 U CN211858289 U CN 211858289U CN 202020786284 U CN202020786284 U CN 202020786284U CN 211858289 U CN211858289 U CN 211858289U
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- precision potentiometer
- housing assembly
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Abstract
The utility model discloses an accurate potentiometre shell sub-assembly with limit function belongs to potentiometre accessory technical field. The combined piece comprises a shell body and a knob, wherein the knob is arranged at the upper end of the shell body and can rotate by taking the axis of the shell body as an axis, an upward protruding stop is arranged at the joint of the shell body and the knob, a downward protruding limiting column is arranged on the lower edge of the knob, and the stop and the limiting column are matched with each other to limit the angle range of the rotation of the knob. The limit of the rotation angle of the knob is realized by arranging the mutually matched stop and the limiting columns in the precision potentiometer shell assembly, so that excessive rotation in the use process is avoided, and the precision and the service life of the precision potentiometer are favorably ensured.
Description
Technical Field
The utility model belongs to the technical field of the potentiometre accessory, especially, relate to an accurate potentiometre shell sub-assembly with limit function.
Background
The potentiometer is an adjustable electronic component and mainly used for adjusting the voltage (including direct current voltage and signal voltage) and the current. When a voltage is applied between two fixed contacts of the resistor body, the position of the contact on the resistor body is changed by the rotating or sliding system, and a voltage which has a certain relation with the position of the moving contact can be obtained between the moving contact and the fixed contact.
A precision potentiometer, also called a precision adjustable potentiometer, is a variable resistor capable of adjusting its own resistance with high precision, and usually needs to be adjusted precisely by rotating a knob. However, due to the lack of a corresponding limiting device in the existing precision potentiometer structure, the use often causes over-rotation, and the long-term repeated over-rotation can affect the control accuracy of the potentiometer and also reduce the service life of the potentiometer.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides an accurate potentiometre shell sub-assembly with limit function realizes the restriction to knob rotation angle through set up backstop and the spacing post of mutually supporting in accurate potentiometre shell sub-assembly to avoid the excessive rotation in the use, be favorable to guaranteeing precision potentiometre's precision and life.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a precision potentiometer shell sub-assembly with limit function, includes shell subject and knob, the knob set up in shell subject upper end can with shell subject's axis is rotatory as the axle, shell subject and knob combination department are provided with the prominent backstop that makes progress, the lower edge of knob is provided with the spacing post of downward salient, backstop and spacing post are mutually supported and can be restricted the rotatory angular range of knob. When the bidirectional rotation limiting device is used, the knob is rotated in the forward direction, when the limiting column is in contact with one side of the stop, the knob reaches the limit of forward rotation and cannot rotate any more, when the limiting column is in contact with the other side of the stop, the knob reaches the limit of reverse rotation and cannot rotate any more, and therefore the bidirectional rotation limiting effect is achieved.
Alternatively, in the above-mentioned precision potentiometer housing assembly, the housing body is a cylindrical body, the housing body has two cavities which are through from top to bottom, the two cavities are through via a platform with a hole, wherein the upper cavity is used for accommodating the knob, the lower cavity is used for accommodating the rotating shaft and other components of the potentiometer, and the stop which is protruded upwards is arranged on the upper edge of the platform with the hole. During assembly, the rotating shaft penetrates through the hole in the center of the platform, then the knob is sleeved at the end part of the rotating shaft, and the rotating shaft can be driven to rotate by rotating the knob.
Alternatively, in the precision potentiometer housing assembly described above, the upwardly projecting stop is arcuate and is disposed coaxially with the housing body.
Alternatively, in the precision potentiometer housing assembly described above, the arc of the upwardly projecting stop is 61 degrees.
Optionally, the precision potentiometer housing assembly further comprises an upper cover and a lower cover, two sets of threads are arranged on the outer wall of the housing main body, and the upper cover and the lower cover are respectively connected with the housing main body through thread matching.
Alternatively, in the precision potentiometer housing assembly, the upper cover and the housing body are connected through a collar with inner threads and outer threads, and the collar is arranged to facilitate assembly.
Alternatively, in the above-mentioned precision potentiometer housing assembly, the end surface of the upper cover is provided with a scale, and the combination of the scale and the rotation angle of the knob is convenient to precisely control.
Alternatively, in the precision potentiometer housing assembly, a circular hole penetrating through the cylinder wall is formed in the lower side of the housing main body, and the circular hole is a screw hole for fixing the wiring terminal.
Optionally, in the above precision potentiometer housing assembly, a square hole penetrating through the cylinder wall is provided at the lower side of the housing main body, and the square hole is a wiring window for facilitating wiring assembly. Further, the square hole is arranged on the opposite side of the round hole.
Alternatively, in the precision potentiometer housing assembly, the housing assembly is made of polybutylene terephthalate (PBT), and compared with a phenolic resin material generally used in a potentiometer housing in the prior art, the PBT has better environmental protection performance and is more durable.
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations where mutually exclusive features and/or steps are mutually exclusive
The utility model has the advantages that:
1. accurate potentiometre shell sub-assembly with limit function realizes the restriction to knob rotation angle through set up backstop and spacing post of mutually supporting in accurate potentiometre shell sub-assembly to avoid the excessive rotation in the use, be favorable to guaranteeing precision potentiometre's precision and life.
Drawings
Fig. 1 is an overall assembly structure diagram of a precision potentiometer housing assembly with a limiting function according to the present invention;
fig. 2 is a sectional view showing an assembled state of a precision potentiometer housing assembly having a position limiting function according to the present invention;
fig. 3 is a top view of the housing main body in the precision potentiometer housing assembly with a position limiting function according to the present invention;
fig. 4 is a front view of the housing main body in the precision potentiometer housing assembly with a position limiting function according to the present invention;
fig. 5 is a left side view of the housing main body in the precision potentiometer housing assembly with a position limiting function according to the present invention;
fig. 6 is a right side view of the housing main body of the precision potentiometer housing assembly with position limiting function according to the present invention;
fig. 7 is a sectional view of the housing main body of the precision potentiometer housing assembly with a position limiting function according to the present invention.
Detailed Description
The present invention is described in detail below with reference to the following embodiments, and it should be noted that the present embodiment is only used for further description of the present invention, but it should not be understood as limiting the scope of the present invention, and those skilled in the art can make some non-essential improvements and modifications to the present invention according to the content of the present invention.
Example 1
As shown in fig. 1 to 7, a precision potentiometer housing assembly with a limiting function, which can be used in a WIW22S precision potentiometer, comprises a housing main body and a knob, wherein the knob is arranged at the upper end of the housing main body and can rotate around the axis of the housing main body, an upward protruding stop is arranged at the joint of the housing main body and the knob, a downward protruding limiting post is arranged at the lower edge of the knob, and the stop and the limiting post are matched with each other to limit the rotating angle range of the knob. When the bidirectional rotation limiting device is used, the knob is rotated in the forward direction, when the limiting column is in contact with one side of the stop, the knob reaches the limit of forward rotation and cannot rotate any more, when the limiting column is in contact with the other side of the stop, the knob reaches the limit of reverse rotation and cannot rotate any more, and therefore the bidirectional rotation limiting effect is achieved.
Alternatively, in the above-mentioned precision potentiometer housing assembly, the housing body is a cylindrical body, the housing body has two cavities which are through from top to bottom, the two cavities are through via a platform with a hole, wherein the upper cavity is used for accommodating the knob, the lower cavity is used for accommodating the rotating shaft and other components of the potentiometer, and the stop which is protruded upwards is arranged on the upper edge of the platform with the hole. During assembly, the rotating shaft penetrates through the hole in the center of the platform, then the knob is sleeved at the end part of the rotating shaft, and the rotating shaft can be driven to rotate by rotating the knob.
Alternatively, in the precision potentiometer housing assembly described above, the upwardly projecting stop is arcuate and is disposed coaxially with the housing body.
Alternatively, in the precision potentiometer housing assembly described above, the arc of the upwardly projecting stop is 61 degrees.
Optionally, the precision potentiometer housing assembly further comprises an upper cover and a lower cover, two sets of threads are arranged on the outer wall of the housing main body, and the upper cover and the lower cover are respectively connected with the housing main body through thread matching.
Alternatively, in the precision potentiometer housing assembly, the upper cover and the housing body are connected through a collar with inner threads and outer threads, and the collar is arranged to facilitate assembly.
Alternatively, in the above-mentioned precision potentiometer housing assembly, the end surface of the upper cover is provided with a scale, and the combination of the scale and the rotation angle of the knob is convenient to precisely control.
Alternatively, in the precision potentiometer housing assembly, a circular hole penetrating through the cylinder wall is formed in the lower side of the housing main body, and the circular hole is a screw hole for fixing the wiring terminal.
Optionally, in the above precision potentiometer housing assembly, a square hole penetrating through the cylinder wall is provided at the lower side of the housing main body, and the square hole is a wiring window for facilitating wiring assembly. . Further, the square hole is arranged on the opposite side of the round hole.
Alternatively, in the precision potentiometer housing assembly, the housing assembly is made of polybutylene terephthalate (PBT), and compared with a phenolic resin material generally used in a potentiometer housing in the prior art, the PBT has better environmental protection performance and is more durable.
The foregoing is only a preferred embodiment of the present invention, which is intended to be illustrative, not limiting; those skilled in the art will understand that many variations, modifications, and even equivalent variations can be made within the spirit and scope of the present invention, which is defined by the claims, but all will fall within the scope of the present invention.
Claims (10)
1. The utility model provides a precision potentiometer shell sub-assembly with limit function, its characterized in that, includes shell subject and knob, the knob set up in shell subject upper end can use shell subject's axis is rotatory as the axle, shell subject and knob junction are provided with the prominent backstop that makes progress, the lower edge of knob is provided with the spacing post that makes progress, backstop and spacing post mutually support and can restrict the rotatory angular range of knob.
2. A precision potentiometer housing assembly according to claim 1, wherein the housing body is generally cylindrical and comprises two cavities extending vertically therethrough, the two cavities extending through a platform with a hole, the upwardly protruding stop being disposed on the upper edge of the platform with the hole.
3. A precision potentiometer housing assembly according to claim 1, wherein the upwardly projecting stop is arcuate and is disposed coaxially with the housing body.
4. A precision potentiometer housing assembly according to claim 3, wherein the arc of the upwardly protruding stop is 61 degrees.
5. A precision potentiometer housing assembly according to claim 1, further comprising an upper cover and a lower cover, wherein two sets of threads are provided on the outer wall of the housing body, and the upper cover and the lower cover are respectively connected with the housing body by thread fit.
6. A precision potentiometer housing assembly according to claim 5, wherein the upper cover and the housing body are connected by a collar with two sets of internal and external threads.
7. A precision potentiometer housing assembly according to claim 5, wherein the end face of the upper cover is provided with a scale.
8. A precision potentiometer housing assembly according to claim 2, wherein the lower side of the housing body is provided with a circular hole through the wall of the barrel.
9. A precision potentiometer housing assembly according to claim 2, wherein the lower side of the housing body is provided with a square hole through the wall of the barrel.
10. A precision potentiometer housing assembly according to claim 2, wherein the housing assembly is polybutylene terephthalate (PBT).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202020786284.2U CN211858289U (en) | 2020-05-13 | 2020-05-13 | Precision potentiometer shell assembly with limiting function |
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CN202020786284.2U CN211858289U (en) | 2020-05-13 | 2020-05-13 | Precision potentiometer shell assembly with limiting function |
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CN211858289U true CN211858289U (en) | 2020-11-03 |
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- 2020-05-13 CN CN202020786284.2U patent/CN211858289U/en active Active
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