CN218482039U - Three-redundancy pull rod type linear displacement potentiometer - Google Patents
Three-redundancy pull rod type linear displacement potentiometer Download PDFInfo
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- CN218482039U CN218482039U CN202221684386.9U CN202221684386U CN218482039U CN 218482039 U CN218482039 U CN 218482039U CN 202221684386 U CN202221684386 U CN 202221684386U CN 218482039 U CN218482039 U CN 218482039U
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Abstract
The utility model discloses a three-redundancy pull rod type linear displacement potentiometer, which comprises an outer shell, the resistive element, the pull rod, slider and brush, the resistive element is installed in the shell, the pull rod passes the corresponding through-hole on the shell, the inner at the pull rod is installed to the slider, the resistive element is three and be triangle-shaped range in the shell, the slider is the collets and arranges in between the three resistive element, the slider includes the three slider surface that is triangle-shaped range, install a conducting strip on every slider surface, install a set of brush on each conducting strip, three brushes of group correspond the contact with the resistance area of three resistive element respectively. The utility model discloses a slider drives three group's brushes and takes the contact slip on the resistance of three resistive element respectively when removing, has three routes signal of telecommunication output, realizes three redundancy functions, only leads to the potentiometre to become invalid when three routes signal became invalid simultaneously, is showing to have improved linear displacement and has detected the reliability, is applicable to the application scenario that requires high to the reliability.
Description
Technical Field
The present invention relates to a pull rod type linear displacement potentiometer (or sensor), and more particularly to a three-redundancy pull rod type linear displacement potentiometer (or sensor) with three signal outputs.
Background
The basic mechanism of the pull rod type linear displacement potentiometer (or sensor) is composed of a casing, a resistor body, a pull rod, a slide block and an electric brush, wherein the resistor body is installed in the casing, the inner end of the pull rod is arranged in the casing, the slide block is installed at the inner end of the pull rod, and the electric brush is installed on the slide block and slides in contact with a resistor belt of the resistor body.
The traditional pull rod type linear displacement potentiometer comprises a single-redundancy pull rod type linear displacement potentiometer and a double-redundancy pull rod type linear displacement potentiometer, wherein the single-redundancy pull rod type linear displacement potentiometer comprises a resistor body and a group of electric brushes and outputs an electric signal, and the double-redundancy pull rod type linear displacement potentiometer comprises two resistor bodies and two groups of electric brushes and outputs two electric signals.
For the application occasions with not very high reliability requirements, the traditional pull rod type linear displacement potentiometer can meet the application requirements, but for the application occasions with extremely high reliability requirements, the traditional pull rod type linear displacement potentiometer cannot meet the application requirements easily.
SUMMERY OF THE UTILITY MODEL
The objective of the present invention is to provide a highly reliable three-redundancy pull rod type linear displacement potentiometer in order to solve the above problems.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the utility model provides a three-redundancy pull rod type linear displacement potentiometer, includes shell, resistive element, pull rod, slider and brush, the resistive element install in the shell, the pull rod passes corresponding through-hole on the shell, the slider is installed the inner of pull rod, the brush is installed on the slider and with resistance area contact on the resistive element, the resistive element is three and be the triangle-shaped range and be in the shell, the slider is the collets and arranges in three between the resistive element, the slider includes the slider surface that three are the triangle-shaped range, every install a conducting strip on the slider surface, each install a set of on the conducting strip the brush, three groups the brush respectively with three resistance area corresponding contact of resistive element.
Preferably, in order to facilitate installation of the resistor body and guide of axial movement of the slider, the three-redundancy pull rod type linear displacement potentiometer further comprises a support frame, the support frame is fixedly connected with the inner wall of the shell, the support frame comprises three outer surfaces of the support frame which are arranged in a triangular mode and three inner surfaces of the support frame which are arranged in a triangular mode, the three resistor bodies are respectively installed on the three outer surfaces of the support frame, through holes are respectively formed in support plates corresponding to the outer surfaces of the three support frames, corresponding electric brushes penetrate through the through holes, the pull rods penetrate through the corresponding through holes in the support frame and are arranged in the support frame, and small-gap fit structures are respectively arranged between the three inner surfaces of the support frame and the three outer surfaces of the slider to achieve axial guide movement of the slider.
As preferred, for the convenience of stable installation support frame and be convenient for adjust its axial position in order to realize the zero-position adjustment of pull rod, the both ends of support frame are equipped with respectively along circumference evenly distributed's three screw, six screws respectively with six the screw is connected, on the shell with six the position that the screw corresponds is equipped with respectively with the axial syntropy bar through-hole of pull rod, six the screw passes six respectively the bar through-hole.
Preferably, in order to achieve a more reliable contact between the brushes and the resistor body, each set of the brushes includes two brushes.
Preferably, for convenience of processing and assembly, the housing comprises a housing cylinder, a first end cover and a second end cover, and the first end cover and the second end cover are respectively installed at two axial ends of the housing cylinder.
The beneficial effects of the utility model reside in that:
the utility model discloses an install three resistive element in the shell and be triangle-shaped and arrange, the surface at the slider sets up the three slider surface that is triangle-shaped and arranges, the slider drives three group's brushes and contacts the slip on the resistance area of three resistive element respectively when removing, three routes signal of telecommunication output has, realize three redundancy functions, only can lead to the potentiometre to become invalid when three routes signal became invalid simultaneously, it detects the reliability to show to have improved linear displacement, be applicable to the high application scenario of reliability requirement.
Drawings
FIG. 1 is a partially cut-away perspective view of a three-redundancy pull rod type linear displacement potentiometer according to the present invention;
fig. 2 is a radial cross-sectional view of the three-redundancy pull rod type linear displacement potentiometer of the present invention.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 and 2, three-redundancy pull rod type linear displacement potentiometer includes a housing, a resistor 7, a pull rod 1, a slider 8 and brushes 11, the resistor 7 is installed in the housing, the pull rod 1 passes through a corresponding through hole on the housing, the slider 8 is installed at the inner end of the pull rod 1, the brushes 11 are installed on the slider 8 and are in contact with resistor belts on the resistor 7, the resistor 7 is three and is arranged in a triangle in the housing, the slider 8 is an insulating block and is arranged between the three resistors 7, the slider 8 includes three slider outer surfaces arranged in a triangle, each a conducting strip 12 is installed on the slider outer surface, a set of brushes 11 is installed on each conducting strip 12, and three sets of brushes 11 correspond to contacts with resistor belts of the three resistors 7 respectively.
As shown in fig. 1 and 2, the present invention also discloses the following various more optimized specific structures:
in order to facilitate the installation of the resistor bodies 7 and the guidance of the axial motion of the sliding blocks 8, the three-redundancy pull rod type linear displacement potentiometer further comprises a support frame 6, the support frame 6 is fixedly connected with the inner wall of the shell, the support frame 6 comprises three support frame outer surfaces which are arranged in a triangular mode and three support frame inner surfaces which are arranged in a triangular mode, the three resistor bodies 7 are respectively installed on the three support frame outer surfaces, through holes 13 and corresponding electric brushes 11 are respectively arranged on support plates corresponding to the support frame outer surfaces and penetrate through the through holes 13, the pull rods 1 penetrate through corresponding through holes in the support frame 6 and are arranged in the support frame 6, and the three support frame inner surfaces are respectively matched with the three sliding blocks outer surfaces in a small-gap mode to achieve the axial guiding movement of the sliding blocks 8.
In order to stably install the support frame 6 and adjust the axial position of the support frame to realize zero adjustment of the pull rod 1, three screw holes which are uniformly distributed along the circumferential direction are respectively arranged at two ends of the support frame 6, six screws 5 are respectively connected with the six screw holes, strip-shaped through holes 4 which are in the same direction as the axial direction of the pull rod 1 are respectively arranged at positions on the shell corresponding to the six screws 5, and the six screws 5 respectively penetrate through the six strip-shaped through holes 4.
In order to achieve more reliable contact between the brushes 11 and the resistor body 7, each set of brushes 11 includes two brushes 11.
For convenience of processing and assembly, the shell comprises a shell cylinder 3, a first end cover 2 and a second end cover 10, wherein the first end cover 2 and the second end cover 10 are respectively arranged at two axial ends of the shell cylinder 3.
Fig. 1 also shows a nut 9 for mounting the sliding block 8, the nut is connected with the inner end of the pull rod 1 through external threads, the outer diameter of a section of the pull rod 1 close to the inner end is reduced to form a step, one end of the sliding block 8 sleeved on the small-diameter section of the pull rod 1 is in contact with the step, and the other end of the sliding block 8 is locked by the nut 9, so that the sliding block 8 is fixedly connected with the pull rod 1.
As shown in fig. 1 and 2, in application, a rotating member of the device to be tested is connected to an outer end of the pull rod 1, the rotating member drives the pull rod 1 to move axially, the pull rod 1 drives the slider 8 and the three sets of brushes 11 to move synchronously, the three sets of brushes 11 respectively contact and slide with resistor bands of the three resistors 7 to respectively obtain three paths of varying electrical signals, three linear displacement amounts are obtained after the three linear displacement amounts are transmitted to an external processor, and a more reliable linear displacement amount can be obtained by performing average or weighted average calculation on the three linear displacement amounts, or one or two resistors 7 are damaged, or one or two electrical signals can still be obtained when one or two sets of brushes 11 are damaged, so that the potentiometer can continue to operate normally, thereby significantly improving reliability of the potentiometer.
Above-mentioned embodiment is only the preferred embodiment of the utility model, and it is not right the utility model discloses technical scheme's restriction, as long as do not pass through creative work can be realized on the basis of above-mentioned embodiment's technical scheme, all should regard as falling into the utility model discloses a right protection within range.
Claims (5)
1. A three-redundancy pull rod type linear displacement potentiometer comprises a shell, a resistor body, a pull rod, a sliding block and an electric brush, wherein the resistor body is installed in the shell, the pull rod penetrates through a corresponding through hole in the shell, the sliding block is installed at the inner end of the pull rod, the electric brush is installed on the sliding block and is in contact with a resistor belt on the resistor body, and the three-redundancy pull rod type linear displacement potentiometer is characterized in that: the three resistor bodies are arranged in the shell in a triangular mode, the sliding blocks are insulating blocks and are arranged among the three resistor bodies, each sliding block comprises three sliding block outer surfaces which are arranged in a triangular mode, a conducting strip is installed on each sliding block outer surface, a group of electric brushes are installed on each conducting strip, and the three groups of electric brushes are respectively in corresponding contact with resistor belts of the three resistor bodies.
2. The three-redundancy pull rod type linear displacement potentiometer according to claim 1, wherein: the three-redundancy pull rod type linear displacement potentiometer further comprises a support frame, the support frame is fixedly connected with the inner wall of the shell, the support frame comprises three support frame outer surfaces which are arranged in a triangular mode and three support frame inner surfaces which are arranged in a triangular mode, the resistor bodies are installed three respectively on the support frame outer surfaces, the resistor bodies are three, through holes are formed in supporting plates corresponding to the support frame outer surfaces respectively, the brushes penetrate through the through holes, the pull rods penetrate through corresponding through holes in the support frame and are arranged in the support frame, the support frame inner surfaces are three respectively, small-gap fit structures are formed between the sliding block outer surfaces to achieve the axial guiding movement of the sliding blocks.
3. The three-redundancy pull rod type linear displacement potentiometer according to claim 2, wherein: the both ends of support frame are equipped with respectively along circumference evenly distributed's three screw, six screws respectively with six the screw is connected, on the shell with six the position that the screw corresponds be equipped with respectively with the bar through-hole of the axial syntropy of pull rod, six the screw passes six respectively the bar through-hole.
4. The triplex redundancy pull rod type linear displacement potentiometer according to claim 1, 2 or 3, wherein: each set of the brushes includes two brushes.
5. The triplex redundancy pull rod type linear displacement potentiometer according to claim 1, 2 or 3, wherein: the shell comprises a shell cylinder, a first end cover and a second end cover, wherein the first end cover and the second end cover are respectively arranged at two axial ends of the shell cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221684386.9U CN218482039U (en) | 2022-07-01 | 2022-07-01 | Three-redundancy pull rod type linear displacement potentiometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221684386.9U CN218482039U (en) | 2022-07-01 | 2022-07-01 | Three-redundancy pull rod type linear displacement potentiometer |
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| Publication Number | Publication Date |
|---|---|
| CN218482039U true CN218482039U (en) | 2023-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221684386.9U Active CN218482039U (en) | 2022-07-01 | 2022-07-01 | Three-redundancy pull rod type linear displacement potentiometer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116994842A (en) * | 2023-08-14 | 2023-11-03 | 深圳市业展电子有限公司 | Profiling resistor of battery |
| CN116994842B (en) * | 2023-08-14 | 2024-05-31 | 深圳市业展电子有限公司 | Profiling resistor of battery |
-
2022
- 2022-07-01 CN CN202221684386.9U patent/CN218482039U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116994842A (en) * | 2023-08-14 | 2023-11-03 | 深圳市业展电子有限公司 | Profiling resistor of battery |
| CN116994842B (en) * | 2023-08-14 | 2024-05-31 | 深圳市业展电子有限公司 | Profiling resistor of battery |
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