Microswitch with good sealing effect

Abstract

The utility model discloses a microswitch with a good sealing effect, which comprises a shell and a base, a plug pin is inserted on the base, a touch button is movably arranged on the shell, the touch button is connected with a connecting piece used for being communicated with the plug pin when the touch button is touched, and the plug pin is connected with the base. A reset spring used for resetting the connecting piece to disconnect the connection of the plug pins after the touch button fails to touch is arranged between the connecting piece and the base in an abutting mode, the shell covers the base, the side wall of the base is connected with the inner wall of the shell through laser welding, and a conical hole used for injecting gas into the shell is formed in the position, on one side of the touch button, of the shell. And a step groove for injecting glue after detection is formed in the shell in the circumferential direction of the conical hole. The air tightness detection device is simple and reliable in structure, convenient to realize, more convenient for air tightness detection operation, and good in use effect.

Description

Technical Field

[0001] The utility model relates to a microswitch with good sealing effect. Background Art

[0002] A microswitch is a small switch, characterized by small size, sensitive action and long service life. They are usually used in occasions that require quick response and high reliability, such as electronic devices, household appliances, industrial control systems, automotive electronics, etc. The microswitch realizes the opening and closing of the circuit through mechanical action. When an external force acts on the switch, the contacts will contact or separate, thus changing the state of the circuit. At present, the connection between the base and the housing of the microswitch mainly adopts the method of applying glue to achieve sealing. However, the glue is easy to penetrate into the interior of the housing through applying glue, which affects the use of the internal structure. At the same time, the strength of the method of applying glue is insufficient, and gaps are easily generated, affecting the sealing reliability. The airtightness detection of the microswitch is an important link to ensure its reliability in specific environments. Especially for those microswitches that require waterproof protection, when these microswitches are detected, air needs to be injected into the microswitch and immersed in water, and the overall airtightness of the microswitch is determined by observing whether bubbles are generated on the housing of the microswitch. At present, during the air injection operation, the air injection position is also selected for the inflation action, but this will also destroy the injection stability of the injection position and affect the airtightness of this position. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the utility model provides a microswitch with good sealing effect, which has a simple and reliable structure, is easy to implement, and is more convenient for airtightness detection operation, and has good use effect.

[0004] To achieve the above object, the utility model provides a microswitch with good sealing effect, which includes a housing and a base. Plug pins are inserted on the base. A touch button is movably arranged on the housing. A connecting piece for connecting the plug pins when the touch button is touched is connected to the touch button. A reset spring for resetting the connecting piece to disconnect the connection of the plug pins after the touch button fails to move is abutted between the connecting piece and the base. The housing covers the base. The side wall of the base and the inner wall of the housing are connected by laser welding. A conical hole for injecting air into the housing is arranged on the housing on one side of the touch button. A step groove for injecting glue after detection is arranged on the housing in the circumferential direction of the conical hole.

[0005] The beneficial effect of such setting is as follows: By such setting, through laser welding, the connection between the housing and the base can be stable, no gaps will be generated, and the sealing effect can be ensured. When performing airtightness detection, air is injected through the conical hole to perform airtightness testing. After the testing is completed, glue can be sealed in the step groove to seal the overall structure and ensure the airtightness of the overall structure. This structure is simple, and at the same time, the layout is more reasonable, and the production and processing are convenient, and it has good use effect.

[0006] As a further arrangement of the present utility model, a retaining wall is circumferentially arranged on the housing around the contact button, a sealing groove is arranged between the retaining wall and the contact button, a sealing rubber sleeve is sleeved on the contact button, and the bottom of the sealing rubber sleeve is clamped in the sealing groove.

[0007] The beneficial effect of such an arrangement is as follows: By setting like this, the sealing effect is further improved, preventing external dirt from entering the housing through the contact button position, ensuring the structural use stability. At the same time, the structure is simple, the production and processing are convenient, and it has a good use effect.

[0008] As a further arrangement of the present utility model, a connecting groove is arranged on the contact button, and the end of the sealing rubber sleeve is clamped in the connecting groove.

[0009] The beneficial effect of such an arrangement is as follows: By setting like this, the connection stability of the rubber sleeve is further ensured, the sealing effect is guaranteed. At the same time, the structure is simple, which is conducive to implementation, and it has a good use effect.

[0010] As a further arrangement of the present utility model, a limiting platform is arranged along the circumference of the base, a positioning platform is arranged on the inner wall of the housing, and the limiting platform abuts against the positioning platform.

[0011] The beneficial effect of such an arrangement is as follows: By setting like this, it can ensure that the base and the housing are installed in place, ensuring the stability of the structural connection. At the same time, the structure is simple, which is conducive to implementation, and it has a good use effect.

[0012] As a further arrangement of the present utility model, a guiding groove and a guiding block are further arranged between the inner wall of the housing and the base, and the guiding block is in plug-in fit with the guiding groove.

[0013] The beneficial effect of such an arrangement is as follows: By setting like this, the stability of the structural assembly is further improved. At the same time, the structure is simple, which is conducive to implementation, and it has a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural view of an embodiment of the present utility model;

[0015] Figure 2 is a sectional view of an embodiment of the present utility model;

[0016] Figure 3 is a schematic structural view of the base in an embodiment of the present utility model;

[0017] Figure 4 is a schematic structural view of the housing in an embodiment of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] An embodiment of the micro switch with good sealing effect of the present utility model is as Figures 1 to 4As shown in the figure, it includes a housing 2 and a base 1. The base 1 is provided with insertion pins 11 inserted thereon. A touch button 3 is movably arranged on the housing 2. A connecting member for connecting the insertion pins 11 when the touch button 3 is touched is connected to the touch button 3. A reset spring for resetting the connecting member to disconnect the connection of the insertion pins 11 after the touch of the touch button 3 fails is abutted between the connecting member and the base 1. The housing 2 covers the base 1. The side wall of the base 1 and the inner wall of the housing 2 are connected by laser welding. A conical hole 21 for injecting gas into the housing 2 is arranged on the housing 2 on one side of the touch button 3. A step groove 22 for injecting glue after detection is arranged on the housing 2 in the circumferential direction of the conical hole 21. The beneficial effect of such a setting is: With such a setting, through laser welding, the housing 2 and the base 1 can be stably connected without generating gaps, ensuring the sealing effect. When performing the airtightness test, air is injected through the conical hole 21 to perform the airtightness test. After the test is completed, glue can be applied in the step groove 22 to seal the overall structure and ensure the airtightness of the overall structure. This structure is simple, and at the same time, the layout is more reasonable, and the production and processing are convenient, with good use effects.

[0019] As a further setting of this embodiment, a retaining wall 25 is arranged on the housing 2 in the circumferential direction of the touch button 3. A sealing groove 26 is arranged between the retaining wall 25 and the touch button 3. A sealing rubber sleeve 4 is sleeved on the touch button 3. The bottom of the sealing rubber sleeve 4 is clamped in the sealing groove 26. The beneficial effect of such a setting is: With such a setting, the sealing effect is further improved, preventing external dirt from entering the housing 2 from the position of the touch button 3, ensuring the use stability of the structure. At the same time, the structure is simple, and the production and processing are convenient, with good use effects.

[0020] As a further setting of this embodiment, a connecting groove 31 is arranged on the touch button 3. The end of the sealing rubber sleeve 4 is clamped in the connecting groove 31. The beneficial effect of such a setting is: With such a setting, the connection stability of the rubber sleeve is further ensured, ensuring the sealing effect. At the same time, the structure is simple and is conducive to implementation, with good use effects.

[0021] As a further setting of this embodiment, a limiting platform 12 is arranged on the base 1 along the circumferential direction. A positioning platform 23 is arranged on the inner wall of the housing 2. The limiting platform 12 abuts against the positioning platform 23. The beneficial effect of such a setting is: With such a setting, it can ensure that the base 1 and the housing 2 are installed in place, ensuring the connection stability of the structure. At the same time, the structure is simple and is conducive to implementation, with good use effects.

[0022] As a further setting of this embodiment, a guide groove 24 and a guide block 13 are further arranged between the inner wall of the housing 2 and the base 1. The guide block 13 is inserted and matched with the guide groove 24. The beneficial effect of such a setting is: With such a setting, the assembly stability of the structure is further improved. At the same time, the structure is simple and is conducive to implementation, with good use effects.

[0023] The above examples are only one of the preferred specific examples of the present utility model. All ordinary variations and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are included in the protection scope of the present utility model.

Claims

1. A microswitch with good sealing effect, comprising a housing and a base. Insertion pins are inserted on the base, a touch button is movably arranged on the housing, a connecting piece for connecting the insertion pins when the touch button is touched is connected to the touch button, and a return spring for resetting the connecting piece to disconnect the connection of the insertion pins after the touch of the touch button fails is abutted between the connecting piece and the base. It is characterized in that: The housing is sleeved on the base, and the side wall of the base is connected to the inner wall of the housing by laser welding. A conical hole for injecting gas into the housing is provided on the housing on one side of the touch button, and a stepped groove for injecting glue after detection is provided on the housing in the circumferential direction of the conical hole.

2. The snap-action switch with good sealing effect according to claim 1, characterized in that: A retaining wall is provided on the housing in the circumferential direction of the touch button. A sealing groove is provided between the retaining wall and the touch button. A sealing rubber sleeve is sleeved on the touch button, and the bottom of the sealing rubber sleeve is clamped in the sealing groove.

3. The snap-action switch with good sealing effect according to claim 2, wherein: A connecting groove is provided on the touch button, and the end of the sealing rubber sleeve is clamped in the connecting groove.

4. The snap-action switch with good sealing effect according to claim 3, wherein: The base is provided with a limiting platform along the circumferential direction, and a positioning platform is provided on the inner wall of the housing. The limiting platform abuts against the positioning platform.

5. The microswitch with good sealing effect according to claim 1, characterized in that: A guiding groove and a guiding block are further provided between the inner wall of the housing and the base, and the guiding block is in plug-in fit with the guiding groove.

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