Metal shell of sensor

Abstract

The utility model discloses a sensor metal shell, and belongs to the technical field of sensor metal shells. The device comprises a shell assembly, a cover plate assembly and a limiting assembly, the shell assembly comprises a shell, through holes are formed in the top and the bottom of the shell, threaded grooves are formed in the top and the bottom of the shell, the through holes penetrate through the threaded grooves, the cover plate assembly comprises a cover plate, a connecting pipe is fixedly connected to the top end of the cover plate, a clamping groove is formed in the connecting pipe, and the limiting assembly is arranged in the clamping groove. The limiting assembly comprises a limiting rod, a spring is arranged on the limiting rod, the tail end of the limiting rod is inserted into the clamping groove and penetrates through the through hole, and the threaded pipe is in threaded fit with the threaded groove. Rapid installation is achieved through matching of the shell assembly and the threaded pipe and the threaded groove of the cover plate assembly, a spring of the limiting assembly and an elastic locking structure of a limiting rod are combined, a cover plate is prevented from loosening in a vibration environment, the structural stability is enhanced, and the sealing reliability is improved through a sealing plug and a sealing gasket.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor metal casing technical field, concretely is a kind of sensor metal casing. BACKGROUND

[0002] Sensor metal casing refers to the metal shell for protecting internal sensitive elements, circuit and other components in sensor, metal casing can effectively shield electromagnetic interference from outside, prevent the influence of external electromagnetic field on internal circuit of sensor, provide mechanical protection for internal sensitive elements, circuit and connecting wire etc., prevent being damaged by external force impact, collision, extrusion, can also resist the invasion of dust, debris and other solid particles, ensure the integrity and stability of internal structure of sensor, during the working process of sensor, internal element will generate heat, metal casing has good heat conduction performance, can quickly conduct heat away, prevent sensor from performance degradation or damage due to overheating, prolong its service life.

[0003] Existing sensor metal casing mostly adopts bolt fixation or buckle type design, and the following defects exist:

[0004] 1, insufficient sealing: traditional casing cover plate and main body only rely on rubber gasket sealing, long-term use is prone to aging, leading to water seepage and dust ingress;

[0005] 2, low installation efficiency: multiple bolt fixation mode needs to be tightened one by one, and it is difficult to ensure uniform stress, so the operation is complicated;

[0006] 3, poor vibration resistance: buckle type design is prone to loosening in mechanical vibration environment, affecting the stability of sensor.

[0007] Therefore, a sensor metal casing with rapid installation, long-term sealing and vibration resistance is urgently needed. UTILITY MODEL CONTENTS

[0008] The utility model aims at providing a kind of sensor metal casing, realize rapid installation by the thread pipe and thread groove cooperation of shell assembly and cover plate assembly, solve the problems of low installation efficiency, insufficient sealing and poor vibration resistance of traditional sensor casing in combination with the spring and limiting rod elastic locking structure of limiting assembly.

[0009] The utility model is implemented by the following technical solutions:

[0010] The utility model is a kind of sensor metal casing, including shell assembly, cover plate assembly and limiting assembly.

[0011] Shell assembly includes shell, and the top and bottom of shell are provided with through hole, and the top and bottom of shell are provided with thread groove, and through hole penetrates thread groove.

[0012] The cover plate assembly comprises a cover plate, a connecting pipe fixedly connected to the top end of the cover plate, a clamping groove formed in the upper end of the connecting pipe, and a threaded pipe fixedly connected to the top end of the connecting pipe.

[0013] The limiting assembly comprises a limiting rod, a spring arranged on the limiting rod, and the limiting rod being inserted into the clamping groove and penetrating through the through hole.

[0014] The threaded pipe is in threaded cooperation with the threaded groove.

[0015] Further, a through hole is formed in the cover plate, a sealing plug is inserted into the through hole of the cover plate, and a sealing gasket is bonded to the top surface of the cover plate.

[0016] Further, the sealing gasket is overlapped on the outer surface of the shell, and a notch is formed in the cover plate.

[0017] Further, the end of the spring is fixed on the outer surface of the shell, and a mounting block is fixedly connected to the outer surface of the cover plate.

[0018] Further, the cover plate assembly has two, and the two cover plate assemblies are correspondingly distributed on the top and bottom of the shell assembly.

[0019] The utility model has the following beneficial effects:

[0020] 1. The utility model discloses a threaded cooperation and elastic limiting structure, which can be fixed without tools, greatly shortens the assembly time, and avoids the sealing failure caused by the thread misplacement.

[0021] 2. The utility model discloses a sealing gasket covering the contact surface of the shell and the cover plate, blocking the liquid and dust, and a sealing plug closing the through hole of the cover plate, preventing the internal components from being damp, and forming a double protection barrier.

[0022] 3. The utility model discloses a spring continuously applying pressure to the limiting rod, so that the cover plate remains stable in the vibration environment, the spring is further compressed after the threaded pipe is screwed, the locking force is enhanced, the spring continuously applies pressure, and the displacement risk caused by the mechanical vibration is offset.

[0023] Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described above. DRAWINGS

[0024] Figure 1 It is a schematic diagram of the sensor metal shell structure.

[0025] Figure 2 It is a schematic diagram of the back structure of the sensor metal shell.

[0026] Figure 3 It is a schematic diagram of the internal structure of the sensor metal shell.

[0027] Figure 4 for Figure 3 A magnified view of the structure at point A in the middle;

[0028] Figure 5 This is a structural schematic diagram of the cover plate assembly;

[0029] Figure 6 This is a schematic diagram of the housing assembly.

[0030] In the diagram: 1. Housing assembly; 101. Housing; 102. Through hole; 103. Threaded groove; 2. Cover plate assembly; 201. Cover plate; 202. Connecting pipe; 203. Slot; 204. Threaded pipe; 205. Sealing plug; 206. Sealing gasket; 207. Mounting block; 3. Limiting assembly; 301. Limiting rod; 302. Spring. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-6 This utility model provides a technical solution: a sensor metal housing, including a housing assembly 1, a cover plate assembly 2, and a limiting assembly 3.

[0033] The housing assembly 1 includes a housing 101, with through holes 102 at the top and bottom of the housing 101, and threaded grooves 103 at the top and bottom of the housing 101.

[0034] Preferably, the housing 101 is made of 304 stainless steel or 6061 aluminum alloy, which takes into account both strength and corrosion resistance. The housing 101 is precision cast and the inner wall is sandblasted to improve the roughness of the sealing surface.

[0035] The housing 101 serves as the core support structure, with through holes 102 and threaded grooves 103 on both its top and bottom. The through holes 102 pass through the threaded grooves 103 to provide an installation channel for the limiting rod 301 and the threaded tube 204. The threaded grooves 103 are used to cooperate with the threaded tubes 204 of the cover plate assembly 2 to achieve the connection between the cover plate and the housing. The housing 101 provides a protective space for the internal components of the sensor, and at the same time, it achieves precise cooperation with other components through the through holes 102 and threaded grooves 103.

[0036] The cover plate assembly 2 comprises a cover plate 201, the top end of the cover plate 201 is fixedly connected with a connecting pipe 202, the upper end of the connecting pipe 202 is provided with a clamping groove 203, the top end of the connecting pipe 202 is fixedly connected with a threaded pipe 204, the threaded pipe 204 is screwed with the threaded groove 103, the cover plate 201 is provided with a through hole, the through hole of the cover plate 201 is plugged with a sealing plug 205, the top end surface of the cover plate 201 is bonded with a sealing gasket 206, the sealing gasket 206 is overlapped on the outer surface of the shell 101, the cover plate 201 is provided with a notch, the cover plate assembly 2 is two, the two cover plate assemblies 2 are correspondingly distributed on the top and bottom of the shell assembly 1, further, the outer surface of the cover plate 201 is fixedly connected with a mounting block 207.

[0037] Preferably, the sealing gasket 206 is made of fluororubber which is resistant to oil and high temperature or silicone which is resistant to aging, and the sealing plug 205 is made of EPDM rubber with a hardness of Shore A 50-60, which is suitable for cover plate through holes with different diameters.

[0038] Preferably, the mounting block 207 is an L-shaped aluminum alloy block which can be used to fix to a device support, the top cover plate mounting block can hang a sensor label or assist a sensor.

[0039] Preferably, the cover plate 201 is processed by CNC milling to form the clamping groove 203 and the notch, and the notch facilitates the passing of a wire harness.

[0040] The cover plate 201 is connected with the shell 101 through the connecting pipe 202 at the top end, the clamping groove 203 on the connecting pipe cooperates with the end of the limiting rod 301 to temporarily limit the cover plate, the threaded pipe 204 is screwed with the threaded groove 103 of the shell to finally fix the cover plate, the sealing gasket 206 and the sealing plug 205 cover the surface of the shell 101 and the through hole of the cover plate 201 respectively to ensure the sealing between the inside and outside of the shell 101, the cover plate assembly 2 is designed by screwing and sealing to ensure the convenience of installation and effectively prevent dust and liquid from the outside from entering the inside of the shell 101.

[0041] The limiting assembly 3 comprises a limiting rod 301, the limiting rod 301 is provided with a spring 302, the end of the limiting rod 301 is inserted into the clamping groove 203, the end of the limiting rod 301 penetrates through the through hole 102, the end of the spring 302 is fixed on the outer surface of the shell 101, the end of the limiting rod 301 is inserted into the clamping groove 203 of the cover plate connecting pipe and is kept stable by the elastic force of the spring 302, when the cover plate assembly 2 is installed, the limiting rod 301 is pressed against the clamping groove by the spring pressure to prevent the cover plate from accidentally falling off when it is not screwed tightly, after the threaded pipe 204 is screwed, the spring is further compressed to enhance the stability of the connection, the elastic design of the spring not only provides installation guidance but also ensures the temporary fixation of the cover plate during the installation process to avoid operation errors.

[0042] Preferably, the spring 302 is made of stainless steel wire SUS304, and a thread glue such as Loctite 243 is applied to the threaded tube 204 before the threaded tube 204 is engaged with the threaded groove 103, so as to enhance the anti-vibration performance.

[0043] The preferred embodiments of the utility model disclosed above are only used for helping to set forth the utility model. The preferred embodiments do not describe all the details exhaustively, and also do not limit the utility model to be only the specific implementation manners described. Apparently, according to the content of the description, many modifications and changes can be made. The description selects and specifically describes these embodiments, so as to better explain the principles and practical applications of the utility model, and thus enables the persons skilled in the art to understand and utilize the utility model well. The utility model is limited by the claims and the whole scope and equivalents thereof.

Claims

1. A sensor metal housing, characterized in that, include: The housing assembly (1) includes a housing (101), the top and bottom of the housing (101) are provided with through holes (102), the top and bottom of the housing (101) are provided with threaded grooves (103), and the through holes (102) penetrate the threaded grooves (103); Cover plate assembly (2), the cover plate assembly (2) includes a cover plate (201), a connecting pipe (202) is fixedly connected to the top end of the cover plate (201), a slot (203) is opened on the upper part of the connecting pipe (202), and a threaded pipe (204) is fixedly connected to the top end of the connecting pipe (202); The limiting component (3) includes a limiting rod (301), a spring (302) is provided on the limiting rod (301), the end of the limiting rod (301) is inserted into the slot (203), and the end of the limiting rod (301) passes through the through hole (102); The threaded tube (204) is threadedly engaged with the threaded groove (103).

2. The sensor metal housing according to claim 1, characterized in that: The cover plate (201) has an opening, a sealing plug (205) is inserted into the opening of the cover plate (201), and a sealing gasket (206) is adhered to the top surface of the cover plate (201).

3. A sensor metal housing according to claim 2, characterized in that: The sealing gasket (206) overlaps the outer surface of the housing (101), and the cover plate (201) has a notch.

4. The sensor metal housing according to claim 1, characterized in that: The end of the spring (302) is fixed to the outer surface of the housing (101), and a mounting block (207) is fixedly connected to the outer surface of the cover plate (201).

5. A sensor metal housing according to claim 1, characterized in that: There are two cover plate assemblies (2), which are distributed on the top and bottom of the housing assembly (1).

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