Displacement sensor
By setting a sealing structure consisting of a sealing collar, a threaded connection between the extension rod and the sealing ring on the housing of the displacement sensor, the problem of water infiltration in humid environments is solved, ensuring that the sensor accuracy is not affected.
Patent Information
- Application Number
- CN202520103283.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-15
- Publication Date
- 2025-12-05
- Estimated Expiration
- 2035-01-15
AI Technical Summary
Existing displacement sensors are prone to water seepage in humid environments, which affects their accuracy.
A sealing ring is installed on the housing of the displacement sensor. The sealing ring is threadedly connected to the extension rod and forms a sealing structure through the sealing ring and the through hole to prevent water from seeping in.
This effectively prevents water from seeping into the housing, ensuring that the sensor's accuracy is not affected in humid environments.
Smart Images
Figure CN223636833U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of sensor, concretely relates to a displacement sensor. BACKGROUND
[0002] The displacement sensor is a kind of equipment that can convert the displacement of object relative to reference point into electrical signal output, is widely used in industrial automation, building structure monitoring, medical health, automobile engineering and other fields, at present, displacement sensor does not have waterproof function, if using in humid environment is easily infiltrated by water inside to influence the precision of displacement sensor, therefore, to avoid the shortcomings existing in prior art, it is necessary to improve prior art. CONTENT OF UTILITY MODEL
[0003] The utility model aims at providing a kind of displacement sensor, can have waterproof function, avoid using in humid environment when water infiltrates inside to influence the precision of displacement sensor.
[0004] To solve the above technical problem, the technical scheme adopted by the utility model is as follows:
[0005] A kind of displacement sensor, it is characterized by including shell, the both ends of the shell are connected with first interface and second interface respectively, sliding rail is provided in the shell, sliding block is slidably installed in the sliding rail, first sensing module and second sensing module are installed on the sliding rail, the sliding block is connected with the extension rod extending to the outside of the shell through the first interface, the shell is provided with sealing sleeve ring on the outside of one end close to the extension rod, the inside of the sealing sleeve ring is in abutment with the extension rod, notch is opened on the sealing sleeve ring, the outside of the sealing sleeve ring is connected with the inside of the first interface by screw thread, through hole is opened on the first interface, the extension rod extends to the outside of the shell through the through hole, sealing ring is provided at the through hole.
[0006] As the preferred scheme of the above displacement sensor, the outside of the first interface is provided with first backing plate, the extension rod extends to the outside of the shell through the through hole and the first backing plate in sequence, the end of the extension rod away from the first backing plate is provided with second backing plate, spring is sleeved on the extension rod between the first backing plate and the second backing plate.
[0007] As the preferred scheme of the above displacement sensor, the material of the sealing sleeve ring is rubber that can be elastically deformed, the sealing sleeve ring is interference fit with the first interface.
[0008] As the preferred scheme of the above displacement sensor, the channel cross section of the sliding rail is circular, the shape of the sliding block is cylindrical shape matched with the channel shape of the sliding rail.
[0009] As a preferred scheme of the displacement sensor, the material of the slide rail is aluminum profile, and the slide rail is formed by aluminum profile stretch processing.
[0010] As a preferred scheme of the displacement sensor, the outer side of the second interface is provided with an external thread.
[0011] Compared with the prior art, the displacement sensor has the beneficial effects that:
[0012] The first interface and the second interface are used for connecting and installing the displacement sensor with external equipment, the shell is provided with a slide rail, a sliding block can slide in the slide rail, the sliding block is connected with an extension rod, the extension rod extends to the outside of the shell, the extension rod is connected with equipment needing displacement sensing, such as a brake and other mechanical equipment, and the mechanical equipment connected with the extension rod moves to drive the extension rod to move, so that the extension rod drives the sliding block to slide in the slide rail, the first sensing module and the second sensing module are installed on the slide rail, the first sensing module can send an electric signal to a control system after the sliding block passes through the first sensing module in the slide rail, and other components are matched to perform automatic control, for example, a switch is turned on when passing through the first sensing module, and the second sensing module can send an electric signal to the control system after the sliding block passes through the second sensing module in the slide rail, and other components are matched to perform automatic control, for example, a switch is turned off when passing through the second sensing module, a sealing sleeve ring is arranged on the outer side of the end of the shell close to the extension rod, the inner side of the sealing sleeve ring abuts against the outer side of the extension rod, a through hole is formed in the first interface, the extension rod extends to the outer side of the shell through the through hole, a sealing ring is arranged at the through hole, the sealing ring extrudes the extension rod to avoid water from the outside flowing into the shell through the through hole, and water is prevented from seeping into the inside in a humid environment to affect the precision of the displacement sensor. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below.
[0014] Figure 1 is a schematic view of the displacement sensor of the present application;
[0015] Figure 2 is a schematic view of the displacement sensor of the present application;
[0016] Figure 3 is a schematic view of the internal structure of the displacement sensor of the present application;
[0017] Figure 4 is a schematic view of the internal structure of the slide rail of the present application;
[0018] Figure 5 is Figure 4Local enlarged view at the sealing collar.
[0019] Reference signs in the drawings:
[0020] 100, housing; 110, first interface; 111, through hole; 112, sealing ring; 120, second interface; 200, extension rod; 210, first pad plate; 220, second pad plate; 230, spring; 300, slide rail; 310, first sensing module; 320, second sensing module; 330, sliding block; 340, sealing collar; 341, notch. DETAILED DESCRIPTION
[0021] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.
[0022] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application. The device or element indicated is necessarily constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0023] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more. Greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0024] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical solution.
[0025] Please refer to Figures 1 to 5 , now the displacement sensor provided by the embodiment of the present application will be described.
[0026] As Figures 1 to 5The utility model discloses a displacement sensor, its characterized in that, including casing 100, the both ends of casing 100 are connected with first interface 110 and second interface 120 respectively, be provided with slide rail 300 in casing 100, the slide block 330 of sliding installation is installed in slide rail 300, install first sensing module 310 and second sensing module 320 on slide rail 300, the extension rod 200 of extending to the outside of casing 100 is connected to the slide block 330 and passes through first interface 110, the seal sleeve ring 340 of setting up on the one end outside of casing 100 close to extension rod 200, the inside of seal sleeve ring 340 with extension rod 200 abuts, the notch 341 of setting up on seal sleeve ring 340, the outside of seal sleeve ring 340 with the inside screw connection of first interface 110, the through hole 111 of setting up on first interface 110, extension rod 200 passes through through hole 111 and extends to the outside of casing 100, be provided with sealing washer 112 at through hole 111, prevent water from the junction of extension rod 200 and first interface 110 and flow into the inside of casing 100.
[0027] Specifically, the inside of seal sleeve ring 340 abuts with the outside of extension rod 200, and the outside diameter of seal sleeve ring 340 is greater than the inside diameter of first interface 110, so that, when the inside of first interface 110 is screwed with the outside of seal sleeve ring 340, the seal sleeve ring 340 is pressed inward during the screwing of first interface 110 into seal sleeve ring 340, so that the seal sleeve ring 340 is pressed inward to extension rod 200, forming a sealed structure. Since the outside diameter of seal sleeve ring 340 is greater than the inside diameter of first interface 110, a notch 341 is provided to slightly tilt the seal sleeve ring 340 outward along the extension rod 200. This allows the seal sleeve ring 340 to press inward to the extension rod 200 after being screwed into the first interface 110. The position of the notch 341 allows the seal sleeve ring 340 to press inward at the notch 341, achieving a sealing effect.
[0028] For example, the first interface 110 is provided with a first backing plate 210, and the extension rod 200 extends to the outside of the casing 100 by passing through the through hole 111 and the first backing plate 210 in sequence. The second backing plate 220 is arranged at the end of the extension rod 200 away from the first backing plate 210. The spring 230 is sleeved between the first backing plate 210 and the second backing plate 220. When the extension rod 200 moves into the casing 100, the slide block 330 slides along the slide rail 300, triggering the first sensing module 310 and the second sensing module 320. During the movement of the extension rod 200 into the casing 100, the spring 230 is compressed. After the external force is removed, the spring 230 can drive the extension rod 200 to reset under the elastic force, so that the extension rod 200 has an automatic reset function.
[0029] Exemplarily, the material of the sealing sleeve ring 340 is rubber capable of elastic deformation, the sealing sleeve ring 340 is in interference fit with the first interface 110, the rubber can be elastically deformed to be compressed, and the rubber is a good material for waterproof sealing; through the interference fit between the sealing sleeve ring 340 and the first interface 110, the sealing sleeve ring 340 can be compressed inward after being screwed into the first interface 110, and a waterproof sealing structure is formed between the sealing sleeve ring 340 and the outer side of the extension rod 200.
[0030] Exemplarily, the channel of the slide rail 300 is circular in cross section, and the slide block 330 is cylindrical in shape and matched with the shape of the channel of the slide rail 300; in a displacement sensor, fine wires need to be arranged to connect various sensing modules in the displacement sensor, and the use of a cylindrical slide block 330 of a rectangular structure can cause the sharp edges to easily scratch and damage the wires; the cylindrical slide block 330 cannot scratch and damage the wires, and the channel of the slide rail 300 is circular in cross section and matched with the cylindrical slide block 330, so that the slide block 330 can rotate around its own axis in the slide rail 300.
[0031] Exemplarily, the material of the slide rail 300 is aluminum profile, and the slide rail 300 is formed by stretching and processing the aluminum profile; the aluminum profile formed by stretching and processing is smooth on the inner side, and movement is more smooth.
[0032] Exemplarily, the outer side of the second interface 120 is provided with external threads, so as to facilitate the connection and fixation of the displacement sensor with other racks and equipment.
[0033] Compared with the prior art, the displacement sensor provided by the utility model has the beneficial effects that:
[0034] The first interface 110 and the second interface 120 are used for connecting and installing a displacement sensor with an external device, the shell 100 is internally provided with a sliding rail 300, a sliding block 330 can slide in the sliding rail 300, the sliding block 330 is connected with an extension rod 200, the extension rod 200 extends out of the shell 100, the extension rod 200 is connected with a device needing displacement sensing, such as a mechanical device like a brake, and the mechanical device connected with the extension rod will drive the extension rod 200 to move when moving, so that the extension rod 200 drives the sliding block 330 to slide in the sliding rail 300, the sliding rail 300 is internally provided with a first sensing module 310 and a second sensing module 320, after the sliding block 330 passes through the first sensing module 310 in the sliding rail 300, the first sensing module 310 can send an electric signal to a control system, and cooperates with other components to realize automatic control, for example, a switch is opened when passing through the first sensing module 310, and after the sliding block 330 passes through the second sensing module 320 in the sliding rail 300, the second sensing module 320 can send an electric signal to the control system, and cooperates with other components to realize automatic control, for example, a switch is closed when passing through the second sensing module 320, the shell 100 is externally provided with a sealing sleeve ring 340 at one end close to the extension rod 200, the inside of the sealing sleeve ring 340 abuts against the outside of the extension rod 200, a gap 341 is formed in the sealing sleeve ring 340, when the sealing sleeve ring 340 is threadedly connected with the first interface 110, the first interface 110 is screwed into the sealing sleeve ring 340 to extrude the outside of the sealing sleeve ring 340, so that the gap 341 of the sealing sleeve ring 340 is extruded inward to seal the extension rod 200, so that the displacement sensor has a waterproof function, a through hole 111 is formed in the first interface 110, the extension rod 200 extends to the outside of the shell 100 through the through hole 111, a sealing ring 112 is arranged at the through hole 111, the sealing ring 112 extrudes the extension rod 200 to prevent external water from flowing into the shell 100 through the through hole 111, so that the precision of the displacement sensor is not affected when used in a humid environment.
[0035] The above only describes the preferred embodiments of the present application, and it should be noted that, for those skilled in the art, without departing from the technical principles of the present application, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection scope of the present application.
Claims
1. A displacement sensor, characterized by, The utility model provides a kind of sensor module, including shell, the first interface and the second interface are connected respectively in both ends of the shell, sliding rail is provided in the shell, sliding block is slidably installed in the sliding rail, first sensing module and second sensing module are installed on the sliding rail, the sliding block is connected with the extension rod extending to the outside of the shell through the first interface, sealing collar is provided on the outside of the shell close to the extension rod, the inside of the sealing collar is in abutment with the extension rod, notch is opened in the sealing collar, the outside of the sealing collar is connected with the inside of the first interface by screw thread, through hole is opened in the first interface, the extension rod extends to the outside of the shell through the through hole, sealing ring is provided at the through hole.
2. The displacement sensor of claim 1, wherein, The outside of the first interface is provided with first backing plate, the extension rod extends to the outside of the shell through the through hole and the first backing plate in sequence, the end of the extension rod away from the first backing plate is provided with second backing plate, spring is sleeved on the extension rod between the first backing plate and the second backing plate.
3. The displacement sensor of claim 2, wherein, The material of the sealing collar is rubber that can be elastically deformed, and the sealing collar is in interference fit with the first interface.
4. The displacement sensor of claim 1, wherein, The channel of the sliding rail is circular in cross section, and the shape of the sliding block is cylindrical, matching the shape of the channel of the sliding rail.
5. The displacement sensor of claim 4, wherein, The material of the sliding rail is aluminum profile, and the sliding rail is formed by aluminum profile stretching processing.
6. The displacement sensor of claim 1, wherein, The outside of the second interface is provided with external thread.