Micro switch with embedded lever structure
Through the embedded lever structure and elastic clamping, the shell damage and shaking when the micro switch lever is inserted is solved, achieving a more compact and stable connection and longer service life, and improving waterproof performance.
Patent Information
- Application Number
- CN202420068580.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-10
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-10
AI Technical Summary
The lever and housing design of the existing micro switches can easily cause the housing to be squeezed when the lever is inserted, and the lever is easily shaken, resulting in unreliable performance.
The embedded lever structure is adopted, which connects the lever to the shell through elastic clamping and mating. The U-shaped groove and positioning bump ensure a compact connection. The limit block and insertion guide slope reduce looseness, and the sealing sleeve improves waterproof performance.
The firm connection between the lever and the shell is achieved, avoiding lever shaking and shell damage, improving the stability and service life of the micro switch, and enhancing the waterproof performance.
Smart Images
Figure CN222146037U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a micro switch, in particular to a micro switch with an embedded lever structure. Background Art
[0002] A micro switch is a switch with a small contact spacing and a snap-action mechanism, a contact mechanism that performs a switch action with a specified stroke and a specified force, covered with a housing, and having a driving rod on the outside. Because the contact spacing of the switch is relatively small, it is called a micro switch, also known as a sensitive switch. The existing micro switch includes a housing, a first terminal arranged on the housing, a first static contact, a second static contact, a moving reed, a button arranged on the housing and used to drive the moving reed, and a lever arranged on the housing and used to drive the button. The lever and the housing of the existing micro switch are mostly matched in that a barb shape is stamped out on the lever plane, and after the elastic barb is inserted into the housing, the barb pops out and snaps into the housing slot to prevent the lever from withdrawing. However, the lever designed with a barb structure is easy to squeeze the plastic thin wall of the housing when inserted, and the gap between the lever and the housing is too large, causing the lever to shake easily, thereby causing the micro switch to have the defect of unreliable performance. Summary of the invention
[0003] The utility model aims to overcome the defects of the prior art and provide a micro switch with an embedded lever structure which has a simple structure, stable and reliable performance and a long service life.
[0004] To achieve the above-mentioned purpose, the utility model adopts a micro switch with an embedded lever structure, including a shell and a switch assembly arranged in the shell, the switch assembly including a first terminal arranged on the shell, a first static contact arranged on the shell, a second static contact arranged on the shell, a moving reed arranged on the first terminal, a button arranged on the shell and used to drive the moving reed, and a lever arranged on the shell and used to drive the button, a plug-in portion at one end of the lever, a socket matched with the plug-in portion is arranged on the shell, two slots connected with the socket are arranged on the shell, the plug-in portion has two plug-in arms, a slot is formed between the two corresponding plug-in arms on the plug-in portion, two protrusions are arranged on the two plug-in arms corresponding to the two slots, and the two protrusions are respectively engaged in the two slots.
[0005] The beneficial effect of the above structure is that the plug-in part of the lever is connected to the housing by an elastic snap-fitting method, the plug-in part of the lever will not pierce the housing, and the lever can be prevented from shaking, thereby ensuring that the connection between the lever and the housing is more compact and firm. A slot is formed between the two corresponding plug-in arms on the plug-in part, thereby ensuring that the two plug-in arms are elastic, and the protrusions on the plug-in arms are snapped into the slots of the housing, thereby ensuring that there is no gap between the lever and the housing, and effectively preventing the lever from shaking in the jack. Therefore, the micro switch has the advantages of simple structure, stable and reliable performance, and long service life.
[0006] In particular, the slot is U-shaped, a positioning protrusion matching the slot is arranged in the jack, the positioning protrusion is engaged in the slot, and the slot is engaged on the positioning protrusion, thereby ensuring that the connection between the plug-in part of the lever and the housing is more compact and firm.
[0007] In particular, two limit blocks are arranged on both sides of the plug-in portion corresponding to the plug-in hole, the two limit blocks abut against the outer wall of the shell, and form a limit fit between the two limit blocks and the shell. The limit blocks can play a limit role and prevent the plug-in portion of the lever and the shell from loosening.
[0008] In particular, one side of the two protrusions is provided with an insertion guide inclined surface matched with the insertion hole, and the other side of the two protrusions is provided with a limiting plane matched with the card slot. The insertion guide inclined surface on the protrusion can reduce the insertion force of the plug-in part, which is beneficial to the assembly of the lever and the housing, and the limiting plane can increase the extraction force of the lever, which can prevent the lever from shaking and loosening, and is beneficial to improving the connection reliability between the lever and the housing.
[0009] In particular, the button is provided with a sealing sleeve which is sealed with the housing, and the sealing sleeve can enhance the sealing performance between the button and the housing, thereby facilitating the improvement of the waterproof performance of the micro switch. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a stereogram of an embodiment of the utility model.
[0011] Figure 2 It is a cross-sectional view of an embodiment of the utility model.
[0012] Figure 3 This is an exploded view of an embodiment of the utility model. DETAILED DESCRIPTION
[0013] like Figures 1 to 3As shown, the embodiment of the utility model is a micro switch with an embedded lever structure, comprising a housing 10, a switch assembly 20 arranged in the housing 10, wherein the switch assembly 20 comprises a first terminal 21 arranged on the housing 10, a first static contact 22 arranged on the housing 10, a second static contact 23 arranged on the housing 10, a moving reed 24 arranged on the first terminal 21, a button 25 arranged on the housing 10 and used to drive the moving reed 24, and a lever 26 arranged on the housing 10 and used to drive the button 25. The lever 26 has a plug-in portion 261 at one end, and the housing 10 is provided with a socket 100 matched with the plug-in portion 261. The housing 10 is provided with two slots 101 connected with the socket 100. The plug-in portion 261 has two plug-in arms 262. A slot 263 is formed between the two plug-in arms 261 on the plug-in portion 261. Two protrusions 264 are provided at the two plug-in arms 262 corresponding to the two slots 101. The two protrusions 264 are respectively engaged in the two slots 101. The slot 263 is U-shaped, and the socket 100 is provided with a positioning protrusion 102 matched with the slot 263. The positioning protrusion 102 is engaged in the slot 263. The slot is engaged with the positioning protrusion, so that the connection between the plug-in portion of the lever and the housing can be ensured to be more compact and firm.
[0014] like Figure 2 and 3 As shown, two limit blocks 265 are arranged on both sides of the plug-in portion 261 corresponding to the plug-in hole 100. The two limit blocks 265 abut against the outer wall of the housing 10 and form a limit fit between the two limit blocks and the housing. The limit blocks can play a limit role and prevent the plug-in portion of the lever from loosening with the housing. An insertion guide inclined surface 2641 matching the plug-in hole 100 is arranged on one side of the two protrusions 264, and a limit plane 2642 matching the slot 101 is arranged on the other side of the two protrusions 264. The insertion guide inclined surface on the protrusion can reduce the insertion force of the plug-in portion, which is conducive to the assembly of the lever and the housing. The limit plane can increase the extraction force of the lever, which can prevent the lever from shaking and loosening, and is conducive to improving the connection reliability between the lever and the housing. The button 25 is provided with a sealing sleeve 27 that is sealed with the housing 10. The sealing sleeve can enhance the sealing performance between the button and the housing, thereby facilitating the improvement of the waterproof performance of the micro switch.
[0015] The plug-in part of the lever is connected to the housing by an elastic snap-fitting method. The plug-in part of the lever will not pierce the housing and can prevent the lever from shaking, thereby ensuring that the connection between the lever and the housing is more compact and firm. A slot is formed between the two corresponding plug-in arms on the plug-in part, thereby ensuring that the two plug-in arms are elastic. The protrusions on the plug-in arms are snapped into the slots of the housing, thereby ensuring that there is no gap between the lever and the housing, and effectively preventing the lever from shaking in the jack. Therefore, the micro switch has the advantages of simple structure, stable and reliable performance, and long service life.
Claims
1. A micro switch with an embedded lever structure, comprising a housing and a switch assembly disposed in the housing, characterized in that: The switch assembly includes a first terminal arranged on the shell, a first static contact arranged on the shell, a second static contact arranged on the shell, a movable spring arranged on the first terminal, a button arranged on the shell and used to drive the movable spring, and a lever arranged on the shell and used to drive the button. One end of the lever has a plug-in portion, the shell is provided with a socket matched with the plug-in portion, the shell is provided with two card slots connected with the socket, the plug-in portion has two plug-in arms, a slot is formed between the corresponding two plug-in arms on the plug-in portion, and two protrusions are provided on the two plug-in arms corresponding to the two card slots, and the two protrusions are respectively engaged in the two card slots.
2. The micro switch of the embedded lever structure according to claim 1, characterized in that: The slot is U-shaped, and a positioning protrusion matched with the slot is arranged in the insertion hole, and the positioning protrusion is engaged in the slot.
3. The micro switch of the embedded lever structure according to claim 1 or 2, characterized in that: Two limit blocks are arranged on both sides of the plug-in portion corresponding to the plug hole. The two limit blocks abut against the outer wall of the shell and form a limit fit between the two limit blocks and the shell.
4. The micro switch of the embedded lever structure according to claim 1 or 2, characterized in that: An insertion guide inclined surface matched with the insertion hole is arranged on one side of the two protrusions, and a limiting plane matched with the card slot is arranged on the other side of the two protrusions.
5. The micro switch with an embedded lever structure according to claim 1 or 2, characterized in that: The button is provided with a sealing sleeve which is sealed with the housing.