Microswitch

Abstract

According to the technical scheme, the microswitch is characterized in that the microswitch comprises a housing; a base is arranged in the shell; a switching mechanism is arranged on the base; a button is arranged on the shell, and a pressing piece is rotationally arranged on the shell; the button is sleeved with a sealing assembly. One end of the button abuts against the pressing piece, and the other end of the button abuts against the switching mechanism. According to the invention, the button can be prevented from being blocked during movement, and the performance of the microswitch is ensured.

Description

Technical Field

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

[0002] As the name implies, a microswitch is a switch that uses very little force. It is a switch in which an external mechanical force acts on an operating reed through a transmission element, causing the fixed contact at its end to quickly connect or disconnect from the moving contact.

[0003] For devices such as automobile fuel tank lids, charging guns, and electronic locks, microswitches are usually used to detect whether they are moved in place. During the movement of the above devices, the button of the microswitch is easily subjected to lateral or oblique forces, and usually the button of the microswitch adopts a straight-up-and-down design, which is prone to jamming when subjected to lateral or oblique forces, affecting the performance of the microswitch.

[0004] The Chinese utility model patent discloses a waterproof and dustproof microswitch (CN220420471U), which is composed of components such as a housing, a button, a reed, a COM terminal, a normally open terminal, a normally closed terminal, and fork feet. In the normal state, the COM terminal and the normally closed terminal are in a conductive connection state. When the button is pressed, it can drive the moving contact piece to swing, and then connect the COM terminal and the normally open terminal. By detecting the conductive connection situation between the three terminals, two working states of the microswitch can be identified.

[0005] However, the microswitches in the prior art still cannot solve the problem of being prone to jamming when subjected to lateral or oblique forces.

[0006] Therefore, it is necessary to improve the existing microswitch to overcome the defects of the prior art. Summary of the Utility Model

[0007] Aiming at the deficiencies of the prior art, the purpose of the present utility model is to provide a microswitch to solve the above technical problems.

[0008] The above technical purpose of the present utility model is achieved through the following technical solutions: A microswitch includes: a housing; a base is arranged inside the housing; a switching mechanism is arranged on the base; a button is arranged on the housing, and a pressing piece is rotatably arranged on the housing; a sealing component is sleeved on the button; one end of the button abuts against the pressing piece, and the other end abuts against the switching mechanism.

[0009] When the microswitch is pressed, the pressing piece rotates around its connection with the housing under the external force, and decomposes the external force into the pressure along the axial direction of the button, causing the button to move along its axial direction and squeezing the switching mechanism to turn on the microswitch through the switching mechanism. By decomposing the lateral or oblique force acting on the pressing piece into the pressure along the axial direction of the button through the pressing piece, it is possible to avoid jamming when the button moves and ensure the performance of the microswitch.

[0010] Optionally, the pressing piece includes: a connecting portion; a rotating portion is provided on the connecting portion; the rotating portion is rotatably connected to the housing, and a guiding portion is further provided on the connecting portion; the connecting portion abuts against the button.

[0011] Specifically, under the action of an external force, the guiding portion drives the connecting portion to rotate around the connection between the rotating portion and the housing, causing the connecting portion to squeeze the button and applying a pressure along its axial direction to the button, avoiding jamming when the button moves and ensuring the performance of the microswitch.

[0012] Optionally, the cross-section of the guiding portion is arc-shaped.

[0013] The arc-shaped guiding portion can more conveniently receive lateral or oblique forces.

[0014] Optionally, the switching mechanism includes: a common terminal; the common terminal is provided on the base; a tension spring is provided on the common terminal; one end of the tension spring is fixed to the common terminal, and a moving piece is provided at the other end; the moving piece abuts against the common terminal; a normally open terminal and a normally closed terminal are further provided on the base; when the button is in a free state, the moving piece is in conduction with the normally closed terminal; when the button is pressed, the moving piece is in conduction with the normally open terminal.

[0015] Specifically, when the button moves along its axial direction, the button contacts the tension spring and causes the tension spring to apply a pulling force to the moving piece. The moving piece moves under the action of the tension spring and separates the moving piece from the normally closed terminal. After the button moves to the trigger position, the moving piece is in conduction with the normally open terminal.

[0016] Optionally, the button includes: a transmission column; a pressing head is provided at one end of the transmission column, and a pressing block is provided at the other end of the transmission column; the pressing head abuts against the pressing piece; the pressing block abuts against the tension spring.

[0017] Specifically, the pressing head is squeezed by the pressing piece to push the transmission column towards the tension spring direction, and the pressing block contacts and squeezes the tension spring.

[0018] Optionally, the pressing head is hemispherical.

[0019] Specifically, when the hemispherical pressing head is squeezed by the connecting part, the contact point between the connecting part and the pressing head continuously moves, making the contact between the connecting part and the pressing head smoother.

[0020] Optionally, a fixing groove is provided on the transmission column; a fixing block is provided in the fixing groove.

[0021] By providing the fixing groove, the position of the sealing component can be fixed, and by means of the fixing block, the connection stability between the sealing component and the transmission column can be improved.

[0022] Optionally, the sealing component includes: a sealing part; the sealing part is sleeved on the transmission column; a sealing ring is provided at one end of the sealing part; the sealing ring is fitted with the fixing groove; a fitting part is provided at the other end of the sealing part, and the fitting part is fitted with the housing.

[0023] By wrapping the sealing ring and the sealing part around the outside of the transmission column and fitting the embedding part into 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.

[0024] In summary, the present utility model has the following beneficial effects: by decomposing the horizontal or oblique acting force acting on the pressing piece into the pressure along the axis of the button through the pressing piece, it is possible to avoid jamming when the button moves, ensuring the performance of the microswitch. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the present utility model;

[0026] Figure 2 is the exploded structural schematic diagram of the present utility model;

[0027] Figure 3 is the sectional structural schematic diagram of the present utility model.

[0028] In the figure: 1, outer shell; 2, base; 3, switching mechanism; 31, common terminal; 32, tension spring; 33, moving piece; 34, normally open terminal; 35, normally closed terminal; 4, button; 41, transmission column; 42, pressing head; 43, extrusion block; 5, sealing component; 51, sealing part; 52, sealing ring; 53, fitting part; 6, pressing piece; 61, connecting part; 62, rotating part; 63, guiding part; 7, fixing groove; 8, fixing block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, features, and advantages of the present utility model more apparent and understandable, the following provides a detailed description of the specific embodiments of the present utility model with reference to the accompanying drawings. Several embodiments of the present utility model are shown 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.

[0030] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. 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 circumstances. 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.

[0031] The following describes the present utility model in detail with reference to the accompanying drawings and embodiments.

[0032] Embodiment 1

[0033] This embodiment provides a microswitch, as Figures 1-3 shown, including: a housing 1; a base 2 is arranged inside the housing 1; a switching mechanism 3 is arranged on the base 2; a button 4 is arranged on the housing 1, and a pressing piece 6 is rotatably arranged on the housing 1; a sealing assembly 5 is sleeved on the button 4; one end of the button 4 abuts against the pressing piece 6, and the other end abuts against the switching mechanism 3.

[0034] When the microswitch is pressed, the pressing piece 6 rotates around its connection with the housing 1 under an external force, and decomposes the external force into a pressure along the axial direction of the button 4, causing the button 4 to move along its axial direction and squeeze the switching mechanism 3, thereby switching the conduction state of the microswitch through the switching mechanism 3. By decomposing the horizontal or oblique force acting on the pressing piece 6 into a pressure along the axial direction of the button 4 through the pressing piece 6, it is possible to avoid jamming when the button 4 moves and ensure the performance of the microswitch.

[0035] Optionally, the pressing piece 6 includes: a connecting portion 61; a rotating portion 62 is arranged on the connecting portion 61; the rotating portion 62 is rotatably connected to the housing 1, and a guiding portion 63 is further arranged on the connecting portion 61; the connecting portion 61 abuts against the button 4.

[0036] Specifically, under the action of an external force, the guiding part 63 drives the connecting part 61 to rotate around the connection between the rotating part 62 and the housing 1, causing the connecting part 61 to press the button 4 and applying an axial pressure to the button 4 along its axis, avoiding jamming when the button 4 moves and ensuring the performance of the microswitch.

[0037] Optionally, the cross-section of the guiding part 63 is arc-shaped.

[0038] The arc-shaped guiding part 63 can more conveniently receive lateral or oblique acting forces.

[0039] Optionally, the switching mechanism 3 includes: a common terminal 31; the common terminal 31 is arranged on the base 2; a tension spring 32 is arranged on the common terminal 31; one end of the tension spring 32 is fixed to the common terminal 31, and the other end is provided with a moving piece 33; the moving piece 33 abuts against the common terminal 31; a normally open terminal 34 and a normally closed terminal 35 are further arranged on the base 2; when the button 4 is in a free state, the moving piece 33 is electrically connected to the normally closed terminal 35; when the button 4 is pressed, the moving piece 33 is electrically connected to the normally open terminal 34.

[0040] Specifically, when the button 4 moves axially, the button 4 contacts the tension spring 32 and causes the tension spring 32 to apply a pulling force to the moving piece 33. The moving piece 33 moves under the action of the tension spring 32 and separates from the normally closed terminal 35. After the button 4 moves to the trigger position, the moving piece 33 is electrically connected to the normally open terminal 34.

[0041] Optionally, the button 4 includes: a transmission column 41; a pressing head 42 is arranged at one end of the transmission column 41, and a pressing block 43 is arranged at the other end of the transmission column 41; the pressing head 42 abuts against the pressing piece 6; the pressing block 43 abuts against the tension spring 32.

[0042] Specifically, the pressing head 42 is pushed by the pressing piece 6 to drive the transmission column 41 to move towards the tension spring 32, and the pressing block 43 contacts and presses the tension spring 32.

[0043] Optionally, the pressing head 42 is hemispherical.

[0044] Specifically, when the hemispherical pressing head 42 is pressed by the connecting part 61, the contact point between the connecting part 61 and the pressing head 42 continuously moves, making the contact between the connecting part 61 and the pressing head 42 smoother.

[0045] Embodiment 2

[0046] This embodiment provides a microswitch, as Figures 1-3As shown in the figure, it includes: a housing 1; a base 2 is arranged inside the housing 1; a switching mechanism 3 is arranged on the base 2; a button 4 is arranged on the housing 1, and a pressing piece 6 is rotatably arranged on the housing 1; a sealing component 5 is sleeved on the button 4; one end of the button 4 abuts against the pressing piece 6, and the other end abuts against the switching mechanism 3.

[0047] When the microswitch is pressed, the pressing piece 6 rotates around its connection with the housing 1 under the external force, and decomposes the external force into a pressure along the axial direction of the button 4, so that the button 4 moves along its axial direction and presses the switching mechanism 3, and the conduction state of the microswitch is changed through the switching mechanism 3. By decomposing the horizontal or oblique force acting on the pressing piece 6 into a pressure along the axial direction of the button 4 through the pressing piece 6, it is possible to avoid jamming when the button 4 moves and ensure the performance of the microswitch.

[0048] Optionally, the pressing piece 6 includes: a connecting portion 61; a rotating portion 62 is arranged on the connecting portion 61; the rotating portion 62 is rotatably connected to the housing 1, and a guiding portion 63 is also arranged on the connecting portion 61; the connecting portion 61 abuts against the button 4.

[0049] Specifically, when the guiding portion 63 is acted upon by an external force, it drives the connecting portion 61 to rotate around the connection between the rotating portion 62 and the housing 1, so that the connecting portion 61 presses the button 4 and the connecting portion 61 applies a pressure along its axial direction to the button 4, avoiding jamming when the button 4 moves and ensuring the performance of the microswitch.

[0050] Optionally, the cross-section of the guiding portion 63 is arc-shaped.

[0051] The arc-shaped guiding portion 63 can more conveniently receive horizontal or oblique forces.

[0052] Optionally, the switching mechanism 3 includes: a common terminal 31; the common terminal 31 is arranged on the base 2; a tension spring 32 is arranged on the common terminal 31; one end of the tension spring 32 is fixed to the common terminal 31, and the other end is provided with a moving piece 33; the moving piece 33 abuts against the common terminal 31; a normally open terminal 34 and a normally closed terminal 35 are also arranged on the base 2; when the button 4 is in a free state, the moving piece 33 is electrically connected to the normally closed terminal 35; when the button 4 is pressed, the moving piece 33 is electrically connected to the normally open terminal 34.

[0053] Specifically, when the button 4 moves along its axial direction, the button 4 contacts the tension spring 32, and the tension spring 32 applies a pulling force to the moving piece 33. The moving piece 33 moves under the action of the tension spring 32, and the moving piece 33 is separated from the normally closed terminal 35. After the button 4 moves to the trigger position, the moving piece 33 is electrically connected to the normally open terminal 34.

[0054] Optionally, the button 4 includes: a transmission column 41; a pressing head 42 is provided at one end of the transmission column 41, and a pressing block 43 is provided at the other end of the transmission column 41; the pressing head 42 abuts against the pressing piece 6; the pressing block 43 abuts against the tension spring 32.

[0055] Specifically, when the pressing head 42 is squeezed by the pressing piece 6, it pushes the transmission column 41 to move towards the tension spring 32, and the pressing block 43 contacts and squeezes the tension spring 32.

[0056] Optionally, the pressing head 42 is hemispherical.

[0057] Specifically, when the hemispherical pressing head 42 is squeezed by the connecting portion 61, the contact point between the connecting portion 61 and the pressing head 42 continuously moves, making the contact between the connecting portion 61 and the pressing head 42 smoother.

[0058] Optionally, a fixing groove 7 is provided on the transmission column 41; a fixing block 8 is provided in the fixing groove 7.

[0059] By providing the fixing groove 7, the position of the sealing component 5 can be fixed, and by means of the fixing block 8, the connection stability between the sealing component 5 and the transmission column 41 can be improved.

[0060] Optionally, the sealing component 5 includes: a sealing portion 51; the sealing portion 51 is sleeved on the transmission column 41; a sealing ring 52 is provided at one end of the sealing portion 51; the sealing ring 52 is fitted with the fixing groove 7; a fitting portion 53 is provided at the other end of the sealing portion 51, and the fitting portion 53 is fitted with the housing.

[0061] By wrapping the sealing ring 52 and the sealing portion 51 around the outside of the transmission column 41 and fitting the embedding portion into the housing, the connection between the transmission column 41 and the housing can be sealed, preventing moisture or dust from entering the microswitch through the gap between the transmission column 41 and the housing, and improving the waterproof reliability of the microswitch.

[0062] 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 micro switch, characterized in that: include: shell; A base is arranged in the shell; a switching mechanism is arranged on the base; a button is arranged on the shell, and a pressing piece is rotatably arranged on the shell; a sealing component is sleeved on the button; one end of the button abuts against the pressing piece, and the other end abuts against the switching mechanism.

2. A micro switch according to claim 1, characterized in that: The pressing piece comprises: a connecting portion; a rotating portion is arranged on the connecting portion; the rotating portion is rotatably connected to the housing, and a guiding portion is also arranged on the connecting portion; and the connecting portion abuts against the button.

3. A micro switch according to claim 2, characterized in that: The cross section of the guide portion is in an arc shape.

4. A micro switch according to claim 1, characterized in that: The switching mechanism includes: a common terminal; the common terminal is arranged on the base; a tension spring is arranged on the common terminal; one end of the tension spring is fixed to the common terminal, and the other end is arranged with a movable piece; the movable piece abuts against the common terminal; a normally open terminal and a normally closed terminal are also arranged on the base; when the button is in a free state, the movable piece is connected to the normally closed terminal; when the button is pressed, the movable piece is connected to the normally open terminal.

5. A micro switch according to claim 4, characterized in that: The button comprises: a transmission column; a pressing head is arranged at one end of the transmission column, and an extrusion block is arranged at the other end of the transmission column; the pressing head abuts against the pressing sheet; and the extrusion block abuts against the tension spring.

6. A micro switch according to claim 5, characterized in that: The pressing head is hemispherical.

7. A micro switch according to claim 5, characterized in that: The transmission column is provided with a fixing groove; a fixing block is provided in the fixing groove.

8. A micro switch according to claim 7, characterized in that: The sealing assembly comprises: a sealing part; the sealing part is sleeved on the transmission column; a sealing ring is arranged at one end of the sealing part; the sealing ring is embedded in the fixing groove; an embedding part is arranged at the other end of the sealing part, and the embedding part is embedded in the housing.

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