CN211876953U - Fork-shaped double-contact reed for linear displacement potentiometer type sensor - Google Patents
Fork-shaped double-contact reed for linear displacement potentiometer type sensor Download PDFInfo
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- CN211876953U CN211876953U CN202020471987.6U CN202020471987U CN211876953U CN 211876953 U CN211876953 U CN 211876953U CN 202020471987 U CN202020471987 U CN 202020471987U CN 211876953 U CN211876953 U CN 211876953U
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Abstract
The utility model discloses a forked double contact reed for linear displacement potentiometre formula sensor, including the reed body, be equipped with on the reed body and have elasticity and utilize this elasticity and resistive element in close contact's contact piece, the contact piece is two and interconnect, is two that "eight" font was arranged contained angle between the contact piece is greater than 0 and is less than 90, the tip of contact piece be equipped with be used for with the contact of resistive element contact. The utility model discloses a design the contained angle between two contact pieces of interconnect and two contact pieces on the reed body and be greater than 0 and be less than 90, the resistive element is arranged in between two contact pieces during the use, the precompression of two contact pieces is roughly opposite and on no longer a straight line, so can eliminate the sensitive direction of contact reed, improved potentiometre formula sensor's use reliability greatly.
Description
Technical Field
The utility model relates to a contact reed of sensor especially relates to a forked double contact reed that is used for linear displacement potentiometre formula sensor.
Background
A potentiometer-type sensor is a sensor that converts mechanical displacement through a potentiometer into a resistance or voltage output that is a function of the potentiometer. The linear displacement potentiometer type sensor is a sensor which converts linear mechanical displacement into resistance or voltage output in a certain functional relation with the linear mechanical displacement through a potentiometer.
As shown in fig. 1, the basic operation principle of the linear displacement potentiometer sensor is that a contact reed 1 is brought into contact with a working surface of a linear resistor 2 and linearly moved by an external force, so that different resistance signals or voltage signals are output from the contact reed.
As shown in fig. 1, the contact reed 1 of the conventional linear displacement potentiometer type sensor adopts a single-point contact structure, the sensitive direction of the structure is the opposite direction of the pre-pressure of the contact reed 1, i.e. the arrow direction in fig. 1, and when the contact reed 1 of the sensor is subjected to a load in the opposite direction of the pre-pressure and the load is greater than the stress critical point of the contact reed 1, the output signal of the sensor has the problem of zero or inaccurate output. This problem cannot be solved because the contact spring 1 adopts a single-point contact structure.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solve the above problems and to provide a forked double-contact spring for a linear displacement potentiometer sensor without a sensitive direction.
The utility model discloses a following technical scheme realizes above-mentioned purpose:
the forked double-contact reed for the linear displacement potentiometer type sensor comprises a reed body, wherein two contact pieces which have elasticity and are in close contact with a resistor body by utilizing the elasticity are arranged on the reed body, the two contact pieces are mutually connected, an included angle between the two contact pieces which are arranged in a splayed shape is larger than 0 degree and smaller than 90 degrees, and a contact piece which is used for being in contact with the resistor body is arranged at the end part of each contact piece.
Preferably, the two contact pieces are integrally formed and bent in order to improve stress and uniformity of the two contact pieces.
Further, in order to facilitate stable installation of the contact piece, the end portion of the contact piece is provided with an installation groove in which the contact piece is installed.
Preferably, in order to improve the elasticity of the contact piece, which is a highly elastic base metal piece, and the contact of the contact piece, which is a highly contact noble metal piece, welded in the mounting groove, and the contact of the contact piece, which is welded in the mounting groove, to improve the sensor accuracy and reduce the cost. The base metal and the precious metal are relative concepts, and the base metal and the precious metal are selected as cheap as possible on the premise of meeting the elasticity requirement, and the precious metal is selected as cheap as possible on the premise of meeting the contact property requirement.
Preferably, the contact is a noble metal member having a cylindrical or circular tube shape in order to improve the contact performance with the resistor and facilitate the movement of the contact. This structure is particularly suitable for sliding contact with a cylindrical resistor body.
Further, in order to facilitate stable installation of the contact reed, two installation holes are formed in the reed body, and the two installation holes are respectively arranged on two sides of the connecting line between the two contact pieces.
The beneficial effects of the utility model reside in that:
the utility model discloses a design the contained angle between two contact pieces of interconnect and two contact pieces on the reed body and be greater than 0 and be less than 90, the resistive element is arranged in between two contact pieces during the use, the precompression of two contact pieces is roughly opposite and on no longer a straight line, so can eliminate the sensitive direction of contact reed, improved potentiometre formula sensor's use reliability greatly.
Drawings
Fig. 1 is a schematic view of a contact structure between a contact reed and a resistor of a conventional linear displacement potentiometer-type sensor;
fig. 2 is a schematic structural view of the fork-shaped double-contact reed for the linear displacement potentiometer sensor according to the present invention, after the contact piece is removed and before the contact piece is bent;
fig. 3 is a schematic structural view of a forked double-contact spring for a linear displacement potentiometer-type sensor according to the present invention;
fig. 4 is a schematic top view of a forked dual-contact spring for a linear displacement potentiometer-type sensor according to the present invention;
fig. 5 is a schematic top view of a forked dual-contact spring for a linear displacement potentiometer-type sensor according to the present invention;
fig. 6 is a schematic structural view of a linear displacement potentiometer-type sensor using the forked double-contact spring according to the present invention;
fig. 7 is an enlarged sectional view a-a in fig. 6.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in fig. 1 to 5, the forked double-contact reed for a linear displacement potentiometer-type sensor according to the present invention includes a reed body 3, a contact piece 5 having elasticity and making close contact with a resistor body by using the elasticity is provided on the reed body 3, the contact piece 5 is a high-elasticity base metal piece, the contact piece 5 is two pieces and is integrally formed with the reed body 3, the two contact pieces 5 are formed by bending on the basis of a linear structure, an included angle between the two contact pieces 5 arranged in a splay shape is greater than 0 ° and less than 90 °, a distance between end portions of the two contact pieces 5 is greater than a distance between root portions, the end portion of the contact piece 5 is provided with a mounting groove 6, a contact piece 7 for contacting with the resistor body 2 is mounted in the mounting groove 6 by welding, the contact piece 7 is a high-contact cylindrical or round-tube-shaped noble metal, the reed body 3 is provided with two mounting holes 4, and the two mounting holes 4 are respectively arranged at two sides of the connecting line between the two contact pieces 5.
As shown in fig. 1-7, when in use, the contact spring is mounted on a spring support 11 through a spring body 3, the spring support 11 is provided with a guide through hole and is sleeved on two guide rods 10 through the guide through hole, two ends of the two guide rods 10 are respectively connected with the inner wall of a shell 8, the spring support 11 is connected with the inner end of a power input shaft 9, and the outer end of the power input shaft 9 is used for being connected with an external power component for detecting the displacement distance; when the external power component drives the power input shaft 9 to move linearly, the reed support 11 drives the two contact pieces 5 and the two contact pieces 7 to move synchronously, the two contact pieces 7 move on the resistor body 2 in a contact manner and output corresponding resistance signals or voltage signals, and the corresponding linear movement distance can be obtained after calculation, so that the purpose of accurately detecting the linear displacement by the sensor is realized.
Description of the drawings: the resistor body 2 is the same as the resistor body 2 in the background art, and the improvement of the present invention is the contact spring itself, so the same reference numerals are used for the resistor body 2 and the resistor body 2 in the background art.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.
Claims (6)
1. The utility model provides a forked double contact reed for linear displacement potentiometre formula sensor, includes the reed body, be equipped with on the reed body have elasticity and utilize this elasticity and the resistive element in close contact's contact piece, its characterized in that: the contact piece is two and interconnect, is the contained angle between two contact pieces of "eight" font range and is greater than 0 and be less than 90, the tip of contact piece is equipped with the contact that is used for with the resistance body contact.
2. The forked double-contact reed for a linear displacement potentiometer-type sensor according to claim 1, further comprising: the two contact pieces are integrally formed and are formed by bending.
3. The forked double-contact reed for linear displacement potentiometer-type sensors according to claim 1 or 2, characterized in that: the end of the contact piece is provided with a mounting groove, and the contact piece is mounted in the mounting groove.
4. The forked double-contact reed for a linear displacement potentiometer-type sensor according to claim 3, further comprising: the contact piece is a highly resilient base metal piece, the contact piece is a highly contact noble metal piece, and the contact piece is welded in the mounting groove.
5. The forked double-contact reed for linear displacement potentiometer-type sensors according to claim 4, further comprising: the contact member is a cylindrical or tubular noble metal member.
6. The forked double-contact reed for linear displacement potentiometer-type sensors according to claim 1 or 2, characterized in that: the reed body is provided with two mounting holes, and the two mounting holes are respectively arranged on two sides of the connecting line between the two contact pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020471987.6U CN211876953U (en) | 2020-04-03 | 2020-04-03 | Fork-shaped double-contact reed for linear displacement potentiometer type sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020471987.6U CN211876953U (en) | 2020-04-03 | 2020-04-03 | Fork-shaped double-contact reed for linear displacement potentiometer type sensor |
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| CN211876953U true CN211876953U (en) | 2020-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020471987.6U Active CN211876953U (en) | 2020-04-03 | 2020-04-03 | Fork-shaped double-contact reed for linear displacement potentiometer type sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758852A (en) * | 2022-06-15 | 2022-07-15 | 成都宏明电子股份有限公司 | Manufacturing method and forming tool of high-precision resistor for multi-circle angular displacement potentiometer |
-
2020
- 2020-04-03 CN CN202020471987.6U patent/CN211876953U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114758852A (en) * | 2022-06-15 | 2022-07-15 | 成都宏明电子股份有限公司 | Manufacturing method and forming tool of high-precision resistor for multi-circle angular displacement potentiometer |
| CN114758852B (en) * | 2022-06-15 | 2022-09-02 | 成都宏明电子股份有限公司 | Manufacturing method and forming tool of high-precision resistor for multi-circle angular displacement potentiometer |
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