CN218916279U - Resistance type displacement sensor - Google Patents
Resistance type displacement sensor Download PDFInfo
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- CN218916279U CN218916279U CN202223234631.9U CN202223234631U CN218916279U CN 218916279 U CN218916279 U CN 218916279U CN 202223234631 U CN202223234631 U CN 202223234631U CN 218916279 U CN218916279 U CN 218916279U
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- push rod
- rack
- displacement sensor
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Abstract
The utility model particularly relates to a resistance type displacement sensor, which comprises a shell, wherein a cover plate is detachably arranged at the upper part of the shell, a sliding push rod is arranged in the shell and can slide left and right in a penetrating manner, a trigger rod is arranged in the middle part of the shell and can slide left in a penetrating manner, a transmission mechanism is arranged between the sliding push rod and the trigger rod, a potentiometer is arranged at the left part of the front side in the shell, and the output end of the potentiometer is in transmission connection with the trigger rod; the sliding push rod can realize a moving distance which is several times longer than the shell, so that the measuring distance range of the displacement sensor is increased, and meanwhile, under the condition that the sliding push rod is not fixed with a measured moving object in the measuring range, when the measured object returns, the sliding push rod can reset in a following way, so that the left end of the sliding push rod is always attached to the surface of the measured object.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to a resistance type displacement sensor.
Background
The resistance type displacement sensor is an early applied electric parameter sensor, and has various kinds and wide application, and the basic principle is that the change of the measured physical quantity is converted into the change of the resistance value corresponding to the change, and the measured change is reflected after the change passes through a corresponding measuring circuit. The resistance type displacement sensor has simple structure and better linearity and stability, and can form a detection system for measuring force, pressure, weight, displacement, acceleration, torque, temperature and the like together with a corresponding measuring circuit, thus becoming one of the indispensable means for detecting and realizing production automation in the production process. The resistance type displacement sensor mainly comprises three types of intelligent potentiometer type, strain gauge type and piezoresistive type sensors.
However, most of the current resistive displacement sensors have limited displacement measuring stroke, for example, the displacement sensor with the patent number of CN202022763354.5 can realize automatic resetting of the trigger rod, and can realize measurement without fixing the trigger rod and the measured object, but because the trigger rod is located in the shell, the trigger rod needs to rely on an elastic piece to ensure resetting of the trigger rod, and therefore, the moving stroke of the trigger rod is not greater than the length of the shell. If a larger stroke is to be measured, a longer displacement sensor of the housing needs to be replaced. The displacement sensor with larger volume is heavy, and is not easy to install and occupies space, so that the cost is increased; the displacement sensor has a smaller stroke range, has a smaller application range, and cannot be popularized and applied in a larger stroke range.
In order to solve the above problems, we provide a resistive displacement sensor that can measure a larger stroke range and can be automatically reset.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provide a resistance type displacement sensor.
The purpose of the utility model is realized in the following way: the resistance type displacement sensor comprises a shell, wherein a cover plate is detachably arranged on the upper portion of the shell, a sliding push rod is arranged in the shell in a penetrating manner in a sliding manner, a trigger rod is arranged in the middle of the shell in a penetrating manner in a sliding manner, a transmission mechanism is arranged between the sliding push rod and the trigger rod, a potentiometer is arranged on the left portion of the front side in the shell, and the output end of the potentiometer is in transmission connection with the trigger rod.
Further, the fixed block is fixedly arranged at the right end of the front side surface of the trigger rod, the guide rod is arranged in the middle of the fixed block in a sliding mode, two ends of the guide rod are respectively fixedly provided with a fixing seat, the fixing seat is fixed at the bottom of the shell, a spring is sleeved on the guide rod on the left side of the fixed block, and the spring is located between the fixed block and the fixing seat on the left side.
Further, the transmission mechanism comprises a first driving gear, a second driving gear, a first driven gear, a second driven gear, a first rack, a second rack, a first rotating shaft and a second rotating shaft, wherein the first rack is embedded in the middle of the front side of the sliding push rod, the second rack is embedded in the middle of the rear side of the triggering rod, the first driving gear is fixedly connected with the first driven gear on the first rotating shaft, the first rotating shaft is rotatably arranged in the shell, the second driving gear and the second driven gear are fixedly arranged on the second rotating shaft, the second rotating shaft is rotatably arranged in the shell, the first driving gear is meshed with the first rack, the second driving gear is meshed with the first driven gear, and the second driven gear is meshed with the second rack.
Further, the pitch circle radius of the first driving gear is larger than that of the first driven gear, the pitch circle radius of the second driving gear is larger than that of the second driven gear, and the pitch circle radius of the second driving gear is larger than that of the first driven gear.
Further, a third rack is fixedly arranged in the middle of the front side surface of the trigger rod, a transmission gear is fixedly arranged at the output end of the potentiometer, and the transmission gear is meshed with the third rack.
Further, mounting holes are formed in four corners of the shell and the cover plate.
When the device is used, the left end of the sliding push rod is attached to the surface of an object to be measured in the moving direction in a natural state, the device is fixed through the fixing hole, when the object to be measured moves rightwards, the sliding push rod is propped against to move rightwards, the transmission mechanism is driven to rotate, the transmission mechanism drives the trigger rod to move rightwards according to the transmission ratio of the transmission mechanism, at the moment, the spring is pulled, and the trigger rod drives the potentiometer to rotate; thereby converting the movement displacement into the displacement of the electric signal which is converted into the actual movement of the measured moving object by external transmission. When the detected object is pushed to the left side by the force of the spring, the trigger rod moves to the left side under the action of the spring, and then the sliding push rod is driven to move to the left side, so that the sliding push rod is always attached to the surface of the detected object. The transmission mechanism can convert the movement of the larger distance of the sliding push rod into the movement of the smaller distance of the trigger rod, and the sliding push rod can realize the movement distance which is several times longer than the shell, so that the measurement distance range of the displacement sensor is increased.
The beneficial effects are that: the sliding push rod of the device can realize the moving distance which is several times longer than the shell, so that the measuring distance range of the displacement sensor is increased, and meanwhile, under the condition that the sliding push rod is not fixed with a measured moving object in the measuring range, when the measured object returns, the sliding push rod can reset in a following manner, so that the left end of the sliding push rod is always attached to the surface of the measured object.
Drawings
Fig. 1 is a schematic diagram of the structure of the utility model.
Fig. 2 is a schematic diagram of the internal structure of the utility model.
Fig. 3 is a partial structural cross-sectional view of the utility model.
Fig. 4 is a cross-sectional view of the housing of the utility model.
Reference numerals illustrate:
1. the device comprises a shell, a cover plate, a mounting hole, a sliding push rod, a rack I, a potentiometer, a trigger rod, a fixed block, a rack II, a spring, a transmission gear, a rack II, a fixed seat, a guide rod, a driving gear I, a driven gear I, a driving gear II, a rotating shaft I, a rotating shaft 19, a rotating shaft II and a driven gear II.
Detailed Description
Example 1 as shown in fig. 1-4, the object of the present utility model is achieved by: the resistance type displacement sensor comprises a shell 1, a cover plate 2 is detachably arranged on the upper portion of the shell 1, a sliding push rod 4 is arranged in the shell 1 in a penetrating manner and capable of sliding left and right, a trigger rod 7 is arranged in the middle of the shell 1 in a penetrating manner and capable of sliding left, a transmission mechanism is arranged between the sliding push rod 4 and the trigger rod 7, the transmission mechanism can change the transmission ratio between the sliding push rod 4 and the trigger rod 7, when the sliding push rod 4 moves for a long distance, the trigger rod 7 moves for a short distance, a potentiometer 6 is arranged on the left portion of the front side in the shell 1, the potentiometer 6 is a resistance type point marker which is not repeated in the prior art, and the output end of the potentiometer 6 is in transmission connection with the trigger rod 7.
The trigger rod 7 leading flank right-hand member is fixed and is provided with fixed block 8, but fixed block 8 middle part left and right sliding be provided with guide arm 14, and guide arm 14 both ends are fixed respectively and are provided with a fixing base 13, and fixing base 13 is fixed in casing 1 bottom, and the cover is equipped with spring 10 on the guide arm 14 of fixed block 8 left side, and spring 10 is located between fixed block 8 and the fixing base 13 of left side, and above-mentioned structure can be realized when the measured object moves back, and the pulling force effect of spring 10 drives sliding push rod 4 return.
The transmission mechanism comprises a first driving gear 15, a second driving gear 17, a first driven gear 16, a second driven gear 20, a first rack 5, a second rack 12, a first rotating shaft 18 and a second rotating shaft 19, wherein the first rack 5 is embedded in the middle of the front side of the sliding push rod 4, the second rack 12 is embedded in the middle of the rear side of the trigger rod 7, the first driving gear 15 is fixedly connected with the first driven gear 16 on the first rotating shaft 18, the first rotating shaft 18 is rotatably arranged in the shell 1, the second driving gear 17 and the second driven gear 20 are fixedly arranged on the second rotating shaft 19, the second rotating shaft 19 is rotatably arranged in the shell 1, the first driving gear 15 and the first rack 5 are meshed with each other, the second driving gear 17 and the first driven gear 16 are meshed with each other, and the second driven gear 20 and the second rack 12 are meshed with each other. The pitch circle radius of the first driving gear 15 is larger than that of the first driven gear 16, the pitch circle radius of the second driving gear 17 is larger than that of the second driven gear 20, the pitch circle radius of the second driving gear 17 is larger than that of the first driven gear 16, and the gear ratio can be changed according to the requirement.
The middle part of the front side surface of the trigger rod 7 is fixedly provided with a third rack 9, the output end of the potentiometer 6 is fixedly provided with a transmission gear 11, and the transmission gear 11 is meshed with the third rack 9. Mounting holes 3 are formed in four corners of the shell 1 and the cover plate 2, so that the device is convenient to fixedly mount.
When the device is used, the left end of the sliding push rod 4 is attached to the surface of an object to be measured in the moving direction in a natural state, the device is fixed through the fixing hole, when the object to be measured moves rightwards, the sliding push rod 4 is propped against the object to be measured to move rightwards, the transmission mechanism is driven to rotate, the transmission mechanism drives the trigger rod 7 to move rightwards according to the transmission ratio of the transmission mechanism, at the moment, the spring 10 is pulled, and the trigger rod 7 drives the potentiometer 6 to rotate; thereby converting the movement displacement into the displacement of the electric signal which is converted into the actual movement of the measured moving object by external transmission. When the detected object is pushed to the left side by the force of the spring 10, the trigger rod 7 moves to the left side by the action of the spring 10, and then the sliding push rod 4 is driven to move to the left side, so that the sliding push rod 4 is always attached to the surface of the detected object. The transmission mechanism can convert the movement of the larger distance of the sliding push rod 4 into the movement of the smaller distance of the trigger rod 7, and the sliding push rod 4 can realize the movement distance which is several times longer than the shell 1, so that the measuring distance range of the displacement sensor is increased.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
The above description is not intended to limit the utility model to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. Resistance type displacement sensor, including casing, its characterized in that: the shell comprises a shell body, and is characterized in that a cover plate is detachably arranged on the upper portion of the shell body, a sliding push rod is arranged in the shell body in a penetrating manner and capable of sliding left and right, a trigger rod is arranged in the middle of the shell body in a penetrating manner and capable of sliding left, a transmission mechanism is arranged between the sliding push rod and the trigger rod, a potentiometer is arranged on the left portion of the front side in the shell body, and the output end of the potentiometer is in transmission connection with the trigger rod.
2. The resistive displacement sensor of claim 1, wherein the right end of the front side of the trigger rod is fixedly provided with a fixed block, the middle part of the fixed block is provided with a guide rod capable of sliding left and right, two ends of the guide rod are respectively fixedly provided with a fixed seat, the fixed seat is fixed at the bottom of the shell, the guide rod at the left side of the fixed block is sleeved with a spring, and the spring is positioned between the fixed block and the fixed seat at the left side.
3. The resistive displacement sensor of claim 1 or 2, wherein the transmission mechanism comprises a first driving gear, a second driving gear, a first driven gear, a second driven gear, a first rack, a second rack, a first rotating shaft and a second rotating shaft, the first rack is embedded in the middle of the front side of the sliding push rod, the second rack is embedded in the middle of the rear side of the trigger rod, the first driving gear and the second driven gear are fixedly connected to the first rotating shaft, the first rotating shaft is rotatably arranged in the shell, the second driving gear and the second driven gear are fixedly arranged on the second rotating shaft, the second rotating shaft is rotatably arranged in the shell, the first driving gear is meshed with the first rack, the second driving gear is meshed with the first driven gear, and the second driven gear is meshed with the second rack.
4. The resistive displacement sensor of claim 3, wherein the first drive gear has a pitch radius greater than the first driven gear, and the second drive gear has a pitch radius greater than the second driven gear, and wherein the second drive gear has a pitch radius greater than the first driven gear.
5. The resistive displacement sensor of claim 4, wherein a third rack is fixedly arranged in the middle of the front side surface of the trigger rod, and a transmission gear is fixedly arranged at the output end of the potentiometer, and the transmission gear is meshed with the third rack.
6. The resistive displacement sensor of claim 5, wherein the housing has mounting holes at four corners.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223234631.9U CN218916279U (en) | 2022-12-05 | 2022-12-05 | Resistance type displacement sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223234631.9U CN218916279U (en) | 2022-12-05 | 2022-12-05 | Resistance type displacement sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218916279U true CN218916279U (en) | 2023-04-25 |
Family
ID=86050742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223234631.9U Active CN218916279U (en) | 2022-12-05 | 2022-12-05 | Resistance type displacement sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218916279U (en) |
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2022
- 2022-12-05 CN CN202223234631.9U patent/CN218916279U/en active Active
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