A displacement sensor

Abstract

The utility model provides a kind of displacement sensor. Including: cover, sensor mechanism and peripheral driving device, the cover is set in the top of the sensor mechanism, and the peripheral driving device is set in the front of the sensor mechanism.The utility model provides a kind of displacement sensor, through cover, sensor mechanism and peripheral driving device etc. Structure mutual cooperation, when using, without the measured object itself with magnetic, through the magnetic force effect between peripheral driving device and magnet steel can realize displacement detection, effectively expand the application range, can detect non-magnetic material, soft magnetic material etc. Non-magnetic field material;The displacement sensor does not need to be powered separately, belongs to passive structure, reduces use cost and complexity, avoids power instability and other problems;At the same time, when moving spring leaf and static spring leaf are conducted, contact resistance is small, without distinguishing ac and dc load, which brings convenience to practical application.

Description

Technical Field

[0001] This utility model relates to the field of displacement sensor technology, and in particular to a displacement sensor. Background Technology

[0002] In the development of industrial automation, precision manufacturing and emerging industries, the demand for high-precision measurement and measurement of non-magnetic materials is becoming increasingly urgent. As the core component that senses and transmits physical quantities to the system decision-making and execution links, the reliability and safety of sensors are of paramount importance.

[0003] A displacement sensor is a device that can convert the linear or angular displacement of an object into an electrical signal or other quantifiable signal. It plays an important role in real-time monitoring, control, and feedback of position changes and is widely used in many fields such as industrial automation, automotive electronics, aerospace, robotics, and medical equipment.

[0004] However, current displacement sensors on the market have some limitations in practical applications: existing displacement sensors typically require the object being measured to be magnetic, which greatly limits their application range, especially for non-magnetic materials, soft magnetic materials, and other materials without magnetic fields; furthermore, many existing displacement sensors are active structures, requiring separate power supplies for long-term operation, which not only increases the cost and complexity of use but may also lead to problems such as unstable power supply; in addition, some electronic displacement sensors have relatively high contact resistance, and AC / DC loads need to be distinguished in terms of load application, which also brings inconvenience to practical applications.

[0005] Therefore, it is necessary to provide a displacement sensor to solve the above-mentioned technical problems. Utility Model Content

[0006] This invention provides a displacement sensor that solves the problems of existing displacement sensors, such as requiring the measured object to be magnetic, being mostly active structures requiring separate power supply, having high contact resistance in some electronic types, and needing to distinguish between AC and DC loads.

[0007] To solve the above-mentioned technical problems, this utility model provides a displacement sensor, comprising: The sensor mechanism includes a cover plate, a sensor mechanism, and a peripheral drive device. The cover plate is disposed on the top of the sensor mechanism, and the peripheral drive device is disposed on the front of the sensor mechanism. The sensor mechanism includes a base assembly, a sliding assembly, and a spring. The sliding assembly is disposed on the inner side of the base assembly, and the spring is disposed on the back side of the sliding assembly.

[0008] Preferably, the base assembly includes a housing and two stationary springs, the two stationary springs being respectively engaged with both ends of the inner side of the housing.

[0009] Preferably, the sliding assembly includes a slider, a magnet, and a movable spring. The slider is slidably connected to the bottom of the inner side of the housing, the magnet is disposed inside the slider, and the movable spring is engaged inside the slider.

[0010] Preferably, one end of the spring is engaged with the back of the slider, and the other end of the spring is engaged with the inner side of the housing.

[0011] Preferably, the displacement sensor further includes two mounting components, which are respectively disposed at both ends of the housing.

[0012] Preferably, the mounting assembly includes an elastic plate, a snap-fit ​​plate, and a limiting strip. The elastic plate is fixedly mounted on the bottom of the cover plate, the snap-fit ​​plate is fixedly mounted on the bottom of one side of the elastic plate, the limiting strip is fixedly mounted on one side of the housing, and the top of the snap-fit ​​plate snaps into the bottom of the limiting strip.

[0013] Preferably, the top of the housing has two positioning grooves, and the bottom of the cover plate has two positioning rods fixedly installed, with the two positioning rods inserted into the inner sides of the two positioning grooves.

[0014] Compared with related technologies, the displacement sensor provided by this utility model has the following advantages: This invention provides a displacement sensor that utilizes a cover plate, sensor mechanism, and peripheral driving device to achieve displacement detection without requiring the object being measured to be magnetic. The displacement can be detected through the magnetic force between the peripheral driving device and the magnet, effectively expanding its application range. It can detect non-magnetic materials, soft magnetic materials, and other materials without magnetic fields. This displacement sensor requires no separate power supply, making it a passive structure that reduces operating costs and complexity, and avoids problems such as unstable power supply. Furthermore, the contact resistance is low when the moving and stationary springs are in contact, eliminating the need to distinguish between AC and DC loads, thus providing convenience for practical applications. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a first embodiment of a displacement sensor provided by this utility model; Figure 2 for Figure 1 The diagram shows the sensor mechanism structure. Figure 3 for Figure 1 The diagram shows the structure of the sliding component. Figure 4 for Figure 3 The diagram shows another perspective of the structure. Figure 5 for Figure 1 The diagram shows the structure of the base assembly. Figure 6 This is a schematic diagram of the structure of a second embodiment of a displacement sensor provided by this utility model; Figure 7 for Figure 6 The diagram shows the front structure of the cover plate. Figure 8 for Figure 6 The diagram shows the top structure of the shell.

[0016] The following are the labels in the diagram: 1. Cover plate, 2. Sensor mechanism, 21. Base assembly, 211. Housing, 212. Static spring, 22. Sliding assembly, 221. Slider, 222. Magnet, 223. Moving spring, 23. Spring, 3. Peripheral drive device, 4. Mounting assembly, 41. Elastic plate, 42. Snap-fit ​​plate, 43. Limiting strip, 5. Positioning rod, 6. Positioning groove. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] First Embodiment

[0019] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 This is a schematic diagram of the structure of a first embodiment of a displacement sensor provided by this utility model; Figure 2 for Figure 1 The diagram shows the sensor mechanism structure. Figure 3 for Figure 1 The diagram shows the structure of the sliding component. Figure 4 for Figure 3 The diagram shows another perspective of the structure. Figure 5 for Figure 1 The diagram shows the structure of the base assembly.

[0020] A displacement sensor includes: a cover plate 1, a sensor mechanism 2, and a peripheral driving device 3. The cover plate 1 is disposed on the top of the sensor mechanism 2, and the peripheral driving device 3 is disposed on the front of the sensor mechanism 2. The sensor mechanism 2 includes a base assembly 21, a sliding assembly 22, and a spring 23. The sliding assembly 22 is disposed on the inner side of the base assembly 21, and the spring 23 is disposed on the back side of the sliding assembly 22.

[0021] The base assembly 21 includes a housing 211 and two stationary springs 212, which are respectively snapped into the two ends of the inner side of the housing 211.

[0022] The sliding assembly 22 includes a slider 221, a magnet 222, and a movable spring 223. The slider 221 is slidably connected to the bottom of the inner side of the housing 211. The magnet 222 is disposed inside the slider 221. The movable spring 223 is engaged inside the slider 221.

[0023] One end of the spring 23 is engaged with the back of the slider 221, and the other end of the spring 23 is engaged with the inner side of the housing 211.

[0024] The base assembly 21 is made of a housing 211 and a plastic-coated static spring 212, and serves as the output part of the product. The sliding component 22 is assembled from a slider 221, a magnet 222, and a moving spring 223, and is integrated by plastic coating, serving as the internal transmission part of the product.

[0025] The working principle of the displacement sensor provided by this utility model is as follows: When the peripheral drive device 3 is not close to the product, the magnet 222 is not under force, and the sliding assembly 22 is in a disconnected state under the pre-tension of the spring 23. When the peripheral drive device 3 approaches the product, the magnetic force between the magnet 222 and the peripheral drive device 3 increases, overcoming the tension of the spring 23 and driving the sliding assembly 22 to move, making the moving spring 223 and the stationary spring 212 connected. When the peripheral drive device 3 moves away from the product, the magnetic force between the magnet 222 and the peripheral drive device 3 decreases, and the sliding assembly 22 returns to its initial position and disconnects under the tension of the spring 23, realizing a displacement motion ranging signal indication function.

[0026] Compared with related technologies, the displacement sensor provided by this utility model has the following advantages: The sensor sensor utilizes a combination of components, including the cover plate 1, sensor mechanism 2, and peripheral drive device 3. During operation, the object being measured does not need to be magnetic; displacement detection is achieved through the magnetic force between the peripheral drive device 3 and the magnet 222. This significantly expands the application range, enabling the detection of non-magnetic materials, soft magnetic materials, and other materials without magnetic fields. Furthermore, the sensor requires no separate power supply, making it a passive structure that reduces operating costs and complexity, and avoids issues such as unstable power supply. Additionally, the low contact resistance between the moving spring 223 and the stationary spring 212 eliminates the need to distinguish between AC and DC loads, providing greater convenience for practical applications.

[0027] Second Embodiment

[0028] Please refer to the following: Figure 6 , Figure 7 and Figure 8 Based on the displacement sensor provided in the first embodiment of this application, the second embodiment of this application proposes another displacement sensor. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0029] Specifically, the second embodiment of this application provides a displacement sensor that differs in that the displacement sensor further includes two mounting components 4, which are respectively disposed at both ends of the housing 211.

[0030] The mounting assembly 4 includes an elastic plate 41, a snap-fit ​​plate 42, and a limiting strip 43. The elastic plate 41 is fixedly installed at the bottom of the cover plate 1, the snap-fit ​​plate 42 is fixedly installed at the bottom of one side of the elastic plate 41, and the limiting strip 43 is fixedly installed at one side of the housing 211. The top of the snap-fit ​​plate 42 is snapped into the bottom of the limiting strip 43.

[0031] The top of the housing 211 has two positioning grooves 6, and the bottom of the cover plate 1 has two positioning rods 5 fixedly installed. The two positioning rods 5 are inserted into the inner side of the two positioning grooves 6.

[0032] The bottom of the snap-fit ​​plate 42 is inclined and abuts against the top of the limiting strip 43, thereby causing the elastic plate 41 to deform and move the snap-fit ​​plate 42 to the bottom of the limiting strip 43. This can limit the movement between the housing 211 and the cover plate 1.

[0033] The working principle of the displacement sensor provided by this utility model is as follows: When installing the cover plate 1, the positioning rod 5 at the bottom of the cover plate 1 is aligned with the positioning groove 6 at the top of the housing 211 and inserted. At the same time, the elastic plate 41 undergoes elastic deformation, and the snap-fit ​​plate 42 is snapped into the bottom of the limiting strip 43 under the action of the elastic plate 41, so as to achieve a stable installation of the cover plate 1 and the housing 211. When disassembling, only a certain external force needs to be applied to deform the elastic plate 41, so that the snap-fit ​​plate 42 can be detached from the bottom of the limiting strip 43, the positioning rod 5 can be pulled out, and the disassembly is completed.

[0034] Compared with related technologies, the displacement sensor provided by this utility model has the following advantages: The installation of component 4 makes the installation and disassembly of cover plate 1 and housing 211 more convenient. The cooperation between positioning rod 5 and positioning groove 6 and the snap-fit ​​between snap-fit ​​plate 42 and limit strip 43 improve the reliability and stability of device installation and ensure the structural stability of sensor during operation.

[0035] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A displacement sensor, characterized by, include: The sensor mechanism includes a cover plate, a sensor mechanism, and a peripheral drive device. The cover plate is disposed on the top of the sensor mechanism, and the peripheral drive device is disposed on the front of the sensor mechanism. The sensor mechanism includes a base assembly, a sliding assembly, and a spring. The sliding assembly is disposed on the inner side of the base assembly, and the spring is disposed on the back side of the sliding assembly. The base assembly includes a housing and two stationary springs, which are respectively engaged with the two ends of the inner side of the housing. The sliding assembly includes a slider, a magnet, and a movable spring. The slider is slidably connected to the bottom of the inner side of the housing, the magnet is disposed inside the slider, and the movable spring is engaged with the inside of the slider. One end of the spring is engaged with the back side of the slider, and the other end of the spring is engaged with the inner side of the housing.

2. A displacement sensor according to claim 1, characterised in that It also includes two mounting components, which are respectively disposed at both ends of the housing.

3. A displacement sensor according to claim 2, wherein, The mounting assembly includes an elastic plate, a snap-fit ​​plate, and a limiting strip. The elastic plate is fixedly installed at the bottom of the cover plate, the snap-fit ​​plate is fixedly installed at the bottom of one side of the elastic plate, and the limiting strip is fixedly installed at one side of the housing. The top of the snap-fit ​​plate snaps into the bottom of the limiting strip.

4. A displacement sensor according to claim 3, wherein The top of the housing has two positioning grooves, and the bottom of the cover plate has two positioning rods fixedly installed. The two positioning rods are inserted into the inner side of the two positioning grooves.

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