Fixing device for plastic shell and cover plate of sensor

Abstract

The utility model relates to the technical field of fixing devices, and discloses a sensor plastic shell and cover plate fixing device, which comprises a sensor shell and a cover plate arranged above the sensor shell, the extrusion spring is arranged at the bottom of the cover plate, an extrusion plate is mounted at the bottom of the extrusion spring, clamping plates are uniformly distributed at the bottom of the cover plate, limiting plates are mounted on the surfaces of the clamping plates, and buckles are mounted on the surfaces of the limiting plates; and the positioning plate is arranged on the surface of the sensor shell, and the surface of the positioning plate is also provided with buckles. An extrusion plate can be driven to compress an extrusion spring by pressing a cover plate, a clamping plate can be turned over to drive a buckle of a limiting plate and a buckle of a positioning plate to be mutually clamped, at the moment, pressing on the cover plate is stopped, the extrusion spring can provide upward extrusion force for the cover plate, the buckles are connected more stably, and the clamping effect is better. Therefore, the cover plate can be disassembled and assembled without bending the buckle, and the cover plate can be disassembled and assembled conveniently.

Description

Technical Field

[0001] This utility model relates to the field of fixing device technology, specifically a fixing device for a sensor plastic shell and cover plate. Background Technology

[0002] The fixing devices for the sensor plastic shell and cover plate include snap-on fixing devices, adhesive bonding fixing devices, and other methods such as welding and mechanical fixing. They achieve the functions of fixing and sealing between the plastic shell and cover plate through different structures, materials or processes.

[0003] Common fixing devices typically have buckles on both sides of the top of the sensor housing, and an annular protrusion at the top of the cover plate. During installation, the cover plate is pressed in from above the sensor housing, pushing the buckles outward. After the cover plate is pressed in, the buckles spring back and lock the cover plate in place, thus achieving fixation.

[0004] However, since the clips of the fixing device are made of plastic, their flexibility will decrease after long-term use. When the cover is disassembled or installed later, the clips will be difficult to bend, making it difficult to push the clips outward and disassemble the cover. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a sensor plastic shell and cover plate fixing device, which solves the problem mentioned in the background art that the flexibility of the buckle will decrease after long-term use, making it difficult to bend the buckle when disassembling and assembling the cover plate, thus making it difficult to push the buckle outward and disassemble and assemble the cover plate.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a sensor plastic shell and cover plate fixing device, comprising:

[0009] A sensor housing, with a cover plate on top;

[0010] A compression spring is disposed at the bottom of the cover plate. A compression plate is installed at the bottom of the compression spring. A snap-fit ​​plate is evenly distributed at the bottom of the cover plate. A limit plate is installed on the surface of each snap-fit ​​plate. A buckle is installed on the surface of each limit plate.

[0011] A positioning plate is set on the surface of the sensor housing, and the surface of the positioning plate is also equipped with buckles.

[0012] Preferably, each of the positioning plates is equipped with a contact plate on its outer side, and each of the buckles is equipped with a limiting protrusion. The contact plate enables the buckle plate to be in a vertical state, and the buckle on the surface of the limiting plate and the positioning plate can be stably connected.

[0013] Preferably, mounting blocks are installed at the bottom of the cover plate and at the corresponding positions of the snap-fit ​​plate. Limiting rods are installed in the middle of the surface of each mounting block. Sleeves are installed on the upper surface of each snap-fit ​​plate. The limiting rods are inserted into the sleeves, so that the snap-fit ​​plate can be folded around the limiting rods as the axis.

[0014] Preferably, the surface of the extrusion plate is evenly provided with sliders, and the inner wall of the cover plate is provided with grooves at positions corresponding to the sliders. The sliders are embedded in the grooves, so that the extrusion plate can move vertically.

[0015] Preferably, a sealing ring is installed at the bottom of the cover plate, and a sealing groove is formed on the upper surface of the sensor housing. The sealing ring is inserted into the sealing groove to seal the connection between the cover plate and the sensor housing.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention provides a sensor plastic shell and cover plate fixing device, which has the following advantages:

[0018] The sensor's plastic housing and cover plate fixing device works by placing the cover plate on the upper surface of the sensor housing. Pressing the cover plate will cause the compression plate to compress the compression spring. The folding snap-fit ​​plate can cause the latches of the limiting plate and the positioning plate to engage with each other. When the pressing of the cover plate is stopped, the compression spring will provide an upward compressive force to the cover plate, thereby causing the limiting plate to move upward, making the latches more stably connected. Thus, the cover plate can be disassembled and assembled without bending the latches, making it convenient to disassemble and assemble the cover plate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the sensor housing of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the cover plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the snap-fit ​​plate of this utility model;

[0023] Figure 5 This is a schematic diagram of the positioning plate of this utility model.

[0024] In the diagram: 1. Sensor housing; 2. Cover plate; 3. Compression spring; 4. Compression plate; 5. Snap-fit ​​plate; 6. Limiting plate; 7. Buckle; 8. Positioning plate; 9. Contact plate; 10. Limiting protrusion; 11. Mounting block; 12. Limiting rod; 13. Sleeve; 14. Slider; 15. Slide groove; 16. Sealing ring; 17. Sealing groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a technical solution: a device for fixing a sensor plastic shell to a cover plate. (See also...) Figure 1 It includes a sensor housing 1, and a cover plate 2 is provided on the top of the sensor housing 1;

[0027] Please see Figure 3 A compression spring 3 is located at the bottom of the cover plate 2. A compression plate 4 is installed at the bottom of the compression spring 3. Engagement plates 5 are evenly distributed at the bottom of the cover plate 2. (See also...) Figure 4 Limiting plates 6 are installed on the surface of the snap-fit ​​plate 5, and buckles 7 are installed on the surface of the limiting plates 6.

[0028] Please see Figure 2 Positioning plate 8 is disposed on the surface of sensor housing 1, please refer to Figure 5 The surface of the positioning plate 8 is also equipped with clips 7;

[0029] Place the cover plate 2 on the upper surface of the sensor housing 1. Pressing the cover plate 2 will cause the compression plate 4 to compress the compression spring 3. The folding snap-fit ​​plate 5 can cause the buckle 7 of the limiting plate 6 to engage with the buckle 7 of the positioning plate 8. At this time, stop pressing the cover plate 2. The compression spring 3 will provide an upward compressive force to the cover plate 2, thereby causing the limiting plate 6 to move upward, making the buckle 7 more stably connected. Therefore, the cover plate 2 can be disassembled and assembled without bending the buckle 7, which is convenient for disassembling and assembling the cover plate 2.

[0030] Contact plates 9 are installed on the outer side of the positioning plate 8, and limit protrusions 10 are installed on the surface of the buckle 7. The contact plates 9 can make the buckle plate 5 in a vertical state, and the limit plate 6 can be stably connected to the buckle 7 on the surface of the positioning plate 8.

[0031] Please see Figure 4The bottom of the cover plate 2 and the corresponding position of the snap-fit ​​plate 5 are each equipped with an installation block 11. Each installation block 11 has a limit rod 12 installed in the middle of its surface. Each snap-fit ​​plate 5 has a sleeve 13 installed on its upper surface. The limit rod 12 is inserted into the sleeve 13, so that the snap-fit ​​plate 5 can be folded around the limit rod 12 as the axis.

[0032] Please see Figure 3 The surface of the extrusion plate 4 is evenly provided with sliders 14, and the inner wall of the cover plate 2 is provided with grooves 15 at the corresponding positions of the sliders 14. The sliders 14 are embedded in the grooves 15, so that the extrusion plate 4 can move vertically.

[0033] A sealing ring 16 is installed at the bottom of cover plate 2. Please refer to [link / reference]. Figure 2 A sealing groove 17 is provided on the upper surface of the sensor housing 1, and a sealing ring 16 is inserted into the sealing groove 17 to seal the connection between the cover plate 2 and the sensor housing 1.

[0034] When this solution is in operation: First, the limiting rod 12 is inserted into the sleeve 13, so that the snap-fit ​​plate 5 can be folded around the limiting rod 12 as the axis. The cover plate 2 is placed on the upper surface of the sensor housing 1. The sealing ring 16 is inserted into the sealing groove 17, which can seal the connection between the cover plate 2 and the sensor housing 1. Then, the cover plate 2 is pressed, so that the compression plate 4 is compressed by the compression of the sensor housing 1, which compresses the compression spring 3. Finally, the snap-fit ​​plate 5 is folded, which can drive the snap-fit ​​7 of the limiting plate 6 and the snap-fit ​​7 of the positioning plate 8 to snap together. At this time, the pressing of the cover plate 2 is stopped, and the compression spring 3 will provide an upward compression force to the cover plate 2, which can drive the limiting plate 6 to move upward, so that the snap-fit ​​7 is connected more stably. Therefore, the cover plate 2 can be disassembled and assembled without bending the snap-fit ​​7, which is convenient for disassembling and assembling the cover plate 2.

[0035] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sensor plastic shell and cover plate fixing device, characterized in that, include: A sensor housing (1) is provided with a cover plate (2) on its upper part; A compression spring (3) is provided at the bottom of the cover plate (2). A compression plate (4) is installed at the bottom of the compression spring (3). A snap-fit ​​plate (5) is evenly distributed at the bottom of the cover plate (2). A limit plate (6) is installed on the surface of the snap-fit ​​plate (5). A buckle (7) is installed on the surface of the limit plate (6). A positioning plate (8) is disposed on the surface of the sensor housing (1), and the surface of the positioning plate (8) is also equipped with buckles (7).

2. The sensor plastic shell and cover plate fixing device according to claim 1, characterized in that: Contact plates (9) are installed on the outer side of the positioning plate (8), and limit protrusions (10) are installed on the surface of the buckle (7).

3. The sensor plastic shell and cover plate fixing device according to claim 1, characterized in that: The bottom of the cover plate (2) and the corresponding position of the snap-fit ​​plate (5) are each equipped with an installation block (11), and a limit rod (12) is installed in the middle of the surface of each installation block (11). A sleeve (13) is installed on the upper surface of each snap-fit ​​plate (5).

4. The sensor plastic shell and cover plate fixing device according to claim 1, characterized in that: The surface of the extrusion plate (4) is evenly provided with sliders (14), and the inner wall of the cover plate (2) is provided with grooves (15) at the corresponding positions of the sliders (14).

5. The sensor plastic shell and cover plate fixing device according to claim 1, characterized in that: A sealing ring (16) is installed at the bottom of the cover plate (2), and a sealing groove (17) is provided on the upper surface of the sensor housing (1).

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