Waterproof microswitch

Abstract

According to the technical scheme, the waterproof microswitch is characterized in that the waterproof microswitch comprises a housing; an elastic bracket is arranged in the shell; a pressing assembly is arranged on the shell; a waterproof assembly correspondingly matched with the pressing assembly is arranged on the shell; the elastic support comprises a pressing part which abuts against the pressing assembly. Two supporting rod parts are symmetrically arranged on the two sides of the pressing part. Abutting parts are arranged at the end parts of the two supporting rod parts; the abutting part is abutted against the shell; a switching assembly is arranged in the shell; the pressing part is arranged on the switching assembly; the two supporting rod parts deform synchronously and support the pressing part, and the connection stability of the pressing part and the pressing assembly and the connection stability of the pressing part and the switching assembly can be ensured during pressing.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, and more specifically, to a waterproof microswitch. Background Art

[0002] A microswitch utilizes an external mechanical force to act on an actuating reed through a transmission element such as a button. When the actuating reed displaces to a critical point, an instantaneous action occurs, causing the moving contact at the end of the actuating reed to quickly connect or disconnect from the fixed contact. However, since the button is telescopically installed in the microswitch housing and partially exposed outside, it is easy for moisture to enter the interior of the microswitch through the gap between the button and the microswitch housing, which can easily cause corrosion of the components inside the microswitch and affect the circuit conduction.

[0003] An existing microswitch, such as the utility model patent with the patent application number 2017206064913, discloses a microswitch, which includes a housing and a first terminal, a second terminal, a moving reed, an elastic connecting piece, a button, and an annular waterproof cap arranged in the housing. The housing has a receiving space for accommodating the first terminal, the second terminal, the moving reed, and the elastic connecting piece, a button groove communicating with the receiving space, and a waterproof groove communicating with the outer end of the button groove. The first terminal and the second terminal respectively extend out of the housing. The elastic connecting piece is connected between the moving reed and the first terminal. The button is telescopically positioned in the button groove. The waterproof cap is tightly sleeved on the button and embedded and positioned in the waterproof groove.

[0004] In the existing microswitch, although it has a waterproof function, the elastic bracket inside it is only connected to the main body through a single strut. After long-term use, it is difficult for the elastic bracket to stably support the button, the moving reed, and the spring, and there is a quality risk of the switch falling apart. Therefore, there is still room for improvement. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the present utility model is to provide a waterproof microswitch to solve the above technical problems.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions: A waterproof microswitch includes: a housing; an elastic bracket is arranged inside the housing; a pressing assembly is arranged on the housing; a waterproof assembly corresponding to and adapted to the pressing assembly is arranged on the housing; the elastic bracket includes a pressing part, and the pressing part abuts against the pressing assembly; two strut parts are symmetrically arranged on both sides of the pressing part; abutting parts are arranged at the ends of the two strut parts; the abutting parts abut against the housing; a switching assembly is arranged inside the housing; the pressing part is arranged on the switching assembly.

[0007] After the pressing component is squeezed, the pressing component pushes the pressing part, the support rod part deforms and drives the switching component to switch the switch state. Since the abutting part is connected to the pressing part through two support rod parts, when the pressing part is squeezed, the two support rod parts deform synchronously and provide support for the pressing part, which can ensure the connection stability between the pressing part and the pressing component and between the pressing part and the switching component during pressing.

[0008] Optionally, the switching component includes: a connecting spring and a movable piece; one end of the connecting spring is fixed to the pressing part, and the other end is fixed to the movable piece; a fixed terminal, a normally open terminal and a normally closed terminal are arranged on the housing; one end of the movable piece abuts against the fixed terminal; when the pressing component is not pressed, the other end of the movable piece is in contact and conduction with the normally closed terminal; when the pressing component is pressed, the other end of the movable piece is in contact and conduction with the normally open terminal.

[0009] After the pressing component is squeezed, the pressing component pushes the pressing part, the pressing part drives the connecting spring to move, the connecting spring drives the movable piece to move, so that the other end of the movable piece separates from the normally closed terminal, and after moving a certain distance, the other end of the movable piece contacts the normally open terminal. At this time, the fixed terminal is conducted with the normally open terminal through the movable piece. After stopping squeezing the pressing component, the support rod part pushes the pressing part to reset, the connecting spring resets, and the other end of the movable piece separates from the normally open terminal and contacts the normally closed terminal. At this time, the fixed terminal is conducted with the normally closed terminal through the movable piece.

[0010] Optionally, a normally open contact corresponding to and adapted to the movable piece is arranged on the normally open terminal.

[0011] The movable piece contacts the normally open contact, and conducts the fixed terminal and the normally open terminal. By arranging the normally open contact on the normally open terminal, the contact sensitivity between the movable piece and the normally open terminal can be improved.

[0012] Optionally, a normally closed contact corresponding to and adapted to the movable piece is arranged on the normally closed terminal.

[0013] The movable piece contacts the normally closed contact, and conducts the fixed terminal and the normally closed terminal. By arranging the normally closed contact on the normally closed terminal, the contact sensitivity between the movable piece and the normally closed terminal can be improved.

[0014] Optionally, a spring contact is arranged on the movable piece.

[0015] By arranging the spring contact, the movable piece can contact the normally open contact and the normally closed contact respectively through the spring contact, further improving the conduction performance between the movable piece and the normally open terminal and the normally closed terminal.

[0016] Optionally, the pressing assembly includes: a transmission column; a pressing head is provided at one end of the transmission column, and a C-shaped block is provided at the other end of the transmission column; the waterproof assembly is provided on the transmission column; the C-shaped block abuts against the pressing part.

[0017] When the pressing head is pressed, it drives the C-shaped block to move towards the pressing part through the transmission column and squeezes the pressing part. The pressing part then drives the connecting spring and the movable piece to move, thereby switching the switch state of the microswitch.

[0018] Optionally, a limiting groove is formed in the C-shaped block; the pressing part abuts against the bottom of the limiting groove.

[0019] By providing the limiting groove, when the pressing head squeezes the pressing part, the pressing part slides in the limiting groove, which can limit the moving range of the pressing part, prevent the pressing part from detaching from the C-shaped block, and improve the connection stability between the pressing part and the C-shaped block.

[0020] Optionally, the waterproof assembly includes: a sealing part and an embedding part; a sealing ring is provided on the inner wall of the sealing part, and the sealing part and the sealing ring tightly wrap around the outer side of the transmission column; the embedding part is fixed in the housing.

[0021] By wrapping the sealing part and the sealing ring around the outer side of the transmission column and fixing the embedding part in the housing, the connection between the transmission column and the housing can be sealed, preventing water vapor or dust from entering the microswitch through the gap between the transmission column and the housing, and improving the waterproof reliability of the microswitch. Among them, the embedding part is fixed in the housing by glue.

[0022] In summary, the present utility model has the following beneficial effects:

[0023] After the pressing assembly is squeezed, the pressing assembly pushes the pressing part, the support rod part deforms and drives the switching assembly to switch the switch state. Since the abutting part is connected to the pressing part through two support rod parts, when the pressing part is squeezed, the two support rod parts deform synchronously and provide support for the pressing part, which can ensure the connection stability between the pressing part and the pressing assembly, and between the pressing part and the switching assembly during pressing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the present utility model;

[0025] Figure 2 is the exploded structural schematic diagram of the present utility model;

[0026] Figure 3 is the sectional structural schematic diagram of the present utility model.

[0027] In the figure: 1. Housing; 2. Elastic support; 21. Pressing part; 22. Rod part; 23. Contact part; 3. Pressing assembly; 31. Transmission column; 32. Pressing head; 33. C-shaped block; 4. Waterproof assembly; 41. Sealing part; 42. Embedded part; 43. Sealing ring; 5. Switching assembly; 51. Connecting spring; 52. Movable piece; 53. Fixed terminal; 54. Normally open terminal; 55. Normally closed terminal; 6. Normally open contact; 7. Normally closed contact; 8. Spring piece contact; 9. Limit groove. Detailed implementation manners

[0028] To make the objectives, features and advantages of the present utility model more obvious and understandable, the following provides a detailed description of the specific implementation manners of the present utility model in conjunction with the accompanying drawings. Several embodiments of the present utility model are given in the accompanying drawings. However, the present utility model can be implemented in many different forms and is not limited to the embodiments described herein.

[0029] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0030] The following describes the present utility model in detail in conjunction with the accompanying drawings and embodiments.

[0031] Embodiment 1

[0032] This embodiment provides a waterproof microswitch, as Figures 1-3 shown, including: a housing 1; an elastic support 2 is arranged inside the housing 1; a pressing assembly 3 is arranged on the housing 1; a waterproof assembly 4 corresponding to and adapted to the pressing assembly 3 is arranged on the housing 1; the elastic support 2 includes a pressing part 21, and the pressing part 21 abuts against the pressing assembly 3; two rod parts 22 are symmetrically arranged on both sides of the pressing part 21; a contact part 23 is arranged at the ends of the two rod parts 22; the contact part 23 abuts against the housing 1; a switching assembly 5 is arranged inside the housing 1; the pressing part 21 is arranged on the switching assembly 5.

[0033] After the pressing component 3 is squeezed, the pressing component 3 pushes the pressing part 21, and the rod part 22 deforms and drives the switching component 5 to switch the switch state. Since the abutting part 23 is connected to the pressing part 21 through two rod parts 22, when the pressing part 21 is squeezed, the two rod parts 22 deform synchronously and provide support for the pressing part 21, which can ensure the connection stability between the pressing part 21 and the pressing component 3, and between the pressing part 21 and the switching component 5 during pressing.

[0034] Optionally, the switching component 5 includes: a connecting spring 51 and a movable piece 52; one end of the connecting spring 51 is fixed to the pressing part 21, and the other end is fixed to the movable piece 52; a fixed terminal 53, a normally open terminal 54 and a normally closed terminal 55 are arranged on the housing 1; one end of the movable piece 52 abuts against the fixed terminal 53; in the case where the pressing component 3 is not pressed, the other end of the movable piece 52 is in contact conduction with the normally closed terminal 55; in the case where the pressing component 3 is pressed, the other end of the movable piece 52 is in contact conduction with the normally open terminal 54.

[0035] After the pressing component 3 is squeezed, the pressing component 3 pushes the pressing part 21, the pressing part 21 drives the connecting spring 51 to move, the connecting spring 51 drives the movable piece 52 to move, so that the other end of the movable piece 52 separates from the normally closed terminal 55, and after moving a certain distance, the other end of the movable piece 52 contacts the normally open terminal 54. At this time, the fixed terminal 53 is conducted with the normally open terminal 54 through the movable piece 52. After stopping squeezing the pressing component 3, the rod part 22 pushes the pressing part 21 to reset, the connecting spring 51 resets, and the other end of the movable piece 52 separates from the normally open terminal 54 and contacts the normally closed terminal 55. At this time, the fixed terminal 53 is conducted with the normally closed terminal 55 through the movable piece 52.

[0036] Optionally, the pressing component 3 includes: a transmission column 31; a pressing head 32 is arranged at one end of the transmission column 31, and a U-shaped block 33 is arranged at the other end of the transmission column 31; the waterproof component 4 is arranged on the transmission column 31; the U-shaped block 33 abuts against the pressing part 21.

[0037] When the pressing head 32 is pressed, it drives the U-shaped block 33 to move towards the pressing part 21 through the transmission column 31 and squeezes the pressing part 21. The pressing part 21 then drives the connecting spring 51 and the movable piece 52 to move, thereby switching the switch state of the micro switch.

[0038] Optionally, a limiting groove 9 is formed in the U-shaped block 33; the pressing part 21 abuts against the bottom of the limiting groove 9.

[0039] By setting the limit groove 9, when the pressing head 32 presses the pressing part 21, the pressing part 21 slides in the limit groove 9, which can limit the moving range of the pressing part 21 and prevent the pressing part 21 from detaching from the U-shaped block 33, thereby improving the connection stability between the pressing part 21 and the U-shaped block 33.

[0040] Optionally, the waterproof component 4 includes: a sealing part 41 and an embedding part 42; a sealing ring 43 is arranged on the inner wall of the sealing part 41, and the sealing part 41 and the sealing ring 43 tightly wrap around the outside of the transmission column 31; the embedding part 42 is fixed in the housing 1.

[0041] By wrapping the sealing part 41 and the sealing ring 43 around the outside of the transmission column 31 and fixing the embedding part 42 in the housing 1, the connection between the transmission column 31 and the housing 1 can be sealed, preventing moisture or dust from entering the micro switch through the gap between the transmission column 31 and the housing 1, and improving the waterproof reliability of the micro switch. Among them, the embedding part 42 is fixed in the housing 1 by glue.

[0042] Embodiment Two

[0043] This embodiment provides a waterproof micro switch, as Figures 1-3 shown, including: a housing 1; an elastic bracket 2 is arranged in the housing 1; a pressing assembly 3 is arranged on the housing 1; a waterproof component 4 corresponding to and adapted to the pressing assembly 3 is arranged on the housing 1; the elastic bracket 2 includes a pressing part 21, and the pressing part 21 abuts against the pressing assembly 3; two support rod parts 22 are symmetrically arranged on both sides of the pressing part 21; an abutting part 23 is arranged at the end of the two support rod parts 22; the abutting part 23 abuts against the housing 1; a switching assembly 5 is arranged in the housing 1; the pressing part 21 is arranged on the switching assembly 5.

[0044] After the pressing assembly 3 is squeezed, the pressing assembly 3 pushes the pressing part 21, the support rod parts 22 are deformed and drive the switching assembly 5 to switch the switch state. Since the abutting part 23 is connected to the pressing part 21 through the two support rod parts 22, when the pressing part 21 is squeezed, the two support rod parts 22 are deformed synchronously and provide support for the pressing part 21, which can ensure the connection stability between the pressing part 21 and the pressing assembly 3, and between the pressing part 21 and the switching assembly 5 during pressing.

[0045] Optionally, the switching component 5 includes a connecting spring 51 and a movable piece 52; one end of the connecting spring 51 is fixed to the pressing part 21, and the other end is fixed to the movable piece 52; a fixed terminal 53, a normally open terminal 54 and a normally closed terminal 55 are arranged on the housing 1; one end of the movable piece 52 abuts against the fixed terminal 53; when the pressing component 3 is not pressed, the other end of the movable piece 52 is in contact with and conducts with the normally closed terminal 55; when the pressing component 3 is pressed, the other end of the movable piece 52 is in contact with and conducts with the normally open terminal 54.

[0046] After the pressing component 3 is squeezed, the pressing component 3 pushes the pressing part 21, the pressing part 21 drives the connecting spring 51 to move, the connecting spring 51 drives the movable piece 52 to move, so that the other end of the movable piece 52 separates from the normally closed terminal 55, and after moving a certain distance, the other end of the movable piece 52 contacts the normally open terminal 54. At this time, the fixed terminal 53 is conducted with the normally open terminal 54 through the movable piece 52. After stopping squeezing the pressing component 3, the support rod part 22 pushes the pressing part 21 to reset, the connecting spring 51 resets, and the other end of the movable piece 52 separates from the normally open terminal 54 and contacts the normally closed terminal 55. At this time, the fixed terminal 53 is conducted with the normally closed terminal 55 through the movable piece 52.

[0047] Optionally, a normally open contact 6 corresponding to and adapted to the movable piece 52 is arranged on the normally open terminal 54.

[0048] The movable piece 52 contacts the normally open contact 6 and conducts the fixed terminal 53 and the normally open terminal 54. By arranging the normally open contact 6 on the normally open terminal 54, the contact sensitivity between the movable piece 52 and the normally open terminal 54 can be improved.

[0049] Optionally, a normally closed contact 7 corresponding to and adapted to the movable piece 52 is arranged on the normally closed terminal 55.

[0050] The movable piece 52 contacts the normally closed contact 7 and conducts the fixed terminal 53 and the normally closed terminal 55. By arranging the normally closed contact 7 on the normally closed terminal 55, the contact sensitivity between the movable piece 52 and the normally closed terminal 55 can be improved.

[0051] Optionally, a spring piece contact 8 is arranged on the movable piece 52.

[0052] By arranging the spring piece contact 8, the movable piece 52 can contact the normally open contact 6 and the normally closed contact 7 respectively through the spring piece contact 8, further improving the conduction performance between the movable piece 52 and the normally open terminal 54 and the normally closed terminal 55.

[0053] Optionally, the pressing assembly 3 includes: a transmission column 31; a pressing head 32 is provided at one end of the transmission column 31, and a C-shaped block 33 is provided at the other end of the transmission column 31; the waterproof assembly 4 is provided on the transmission column 31; the C-shaped block 33 abuts against the pressing portion 21.

[0054] When the pressing head 32 is pressed, the C-shaped block 33 is driven by the transmission column 31 to move towards the pressing portion 21 and squeeze the pressing portion 21. The pressing portion 21 then drives the connecting spring 51 and the movable piece 52 to move, thereby switching the on / off state of the microswitch.

[0055] Optionally, a limiting groove 9 is formed in the C-shaped block 33; the pressing portion 21 abuts against the bottom of the limiting groove 9.

[0056] By providing the limiting groove 9, when the pressing head 32 squeezes the pressing portion 21, the pressing portion 21 slides in the limiting groove 9, which can limit the moving range of the pressing portion 21 and prevent the pressing portion 21 from detaching from the C-shaped block 33, thereby improving the connection stability between the pressing portion 21 and the C-shaped block 33.

[0057] Optionally, the waterproof assembly 4 includes: a sealing portion 41 and an embedding portion 42; a sealing ring 43 is provided on the inner wall of the sealing portion 41, and the sealing portion 41 and the sealing ring 43 tightly wrap around the outside of the transmission column 31; the embedding portion 42 is fixed in the housing 1.

[0058] By wrapping the sealing portion 41 and the sealing ring 43 around the outside of the transmission column 31 and fixing the embedding portion 42 in the housing 1, the connection between the transmission column 31 and the housing 1 can be sealed, preventing moisture or dust from entering the microswitch through the gap between the transmission column 31 and the housing 1, and improving the waterproof reliability of the microswitch. Among them, the embedding portion 42 is fixed in the housing 1 by glue.

[0059] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A waterproof microswitch, characterized in that, Comprising: A housing; an elastic bracket is arranged inside the housing; A pressing assembly is arranged on the housing; a waterproof assembly corresponding to and adapted to the pressing assembly is arranged on the housing; the elastic bracket includes a pressing part, and the pressing part abuts against the pressing assembly; two support rod parts are symmetrically arranged on both sides of the pressing part; an abutting part is arranged at the end of the two support rod parts; the abutting part abuts against the housing; a switching assembly is arranged inside the housing; the pressing part is arranged on the switching assembly.

2. The waterproof microswitch according to claim 1, characterized in that, The switching assembly includes: a connecting spring and a movable piece; one end of the connecting spring is fixed to the pressing part, and the other end is fixed to the movable piece; a fixed terminal, a normally open terminal and a normally closed terminal are arranged on the housing; one end of the movable piece abuts against the fixed terminal; when the pressing assembly is not pressed, the other end of the movable piece contacts and conducts with the normally closed terminal; when the pressing assembly is pressed, the other end of the movable piece contacts and conducts with the normally open terminal.

3. The waterproof microswitch according to claim 2, characterized in that, A normally open contact corresponding to and adapted to the movable piece is arranged on the normally open terminal.

4. The waterproof microswitch according to claim 2, characterized in that, A normally closed contact corresponding to and adapted to the movable piece is arranged on the normally closed terminal.

5. The waterproof microswitch according to claim 2, characterized in that, A spring contact is arranged on the movable piece.

6. A waterproof microswitch according to claim 1, characterized in that, The pressing assembly includes: a transmission column; a pressing head is arranged at one end of the transmission column, and a U-shaped block is arranged at the other end of the transmission column; the waterproof assembly is arranged on the transmission column; the U-shaped block abuts against the pressing part.

7. A waterproof microswitch according to claim 6, characterized in that, A limiting groove is formed in the U-shaped block; the pressing part abuts against the bottom of the limiting groove.

8. A waterproof microswitch according to claim 6, characterized in that, The waterproof assembly includes: a sealing part and an embedding part; a sealing ring is arranged on the inner wall of the sealing part, and the sealing part and the sealing ring tightly wrap the outside of the transmission column; the embedding part is fixed inside the housing.

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