A clip-type micro switch

Abstract

The present invention discloses a clip-type micro switch, comprising a base, a common terminal, an output terminal, a shell, a button, a clamp and a spring. The common terminal and the output terminal are respectively arranged at both ends of the base, and the output terminal is a normally open terminal or a normally closed terminal. The shell is covered on the base, and the button comprises a pressing column and a pressing block. The clip-type micro switch of the present invention has few components and a simple structure. It can realize synchronous up and down sliding through the double-sided clamping guide, thereby realizing the conduction and cutoff of the signal, so that the signal switching is smoother and the signal conduction is more stable. At the same time, the convex ribs designed as an integral part can also increase the connection between the clamping part and the common terminal and the output terminal, making the connection more stable. The clip and the pressing block adopt a buckle connection, so that the assembly between the clip and the pressing block is firm, and the clamping part of the clip is convenient for sliding up and down. Finally, the overall structure of the micro switch is simple, the design is reasonable, and the stability is good.

Description

Technical Field

[0001] The present invention relates to the technical field of switches, in particular to a clip-type micro switch. Background Art

[0002] A micro switch is a contact mechanism that performs a switching action with a specified stroke and a specified force. It is covered with a shell and has a driving rod on the outside. Because it uses sliding contacts when switching, it has characteristics such as silence. It is widely used in electronic equipment, instruments and meters, mining, power systems, household appliances, electrical equipment and other fields.

[0003] There are many types of micro switches, with hundreds of internal structures. According to their volume, they are divided into ordinary, small, and ultra-small types; according to their protection performance, they are divided into waterproof, dustproof, explosion-proof, etc.; because micro switches are used in equipment that frequently switches circuits, their performance needs to be ensured. However, the existing micro switches are not stable enough and the signal switching is not smooth enough. Therefore, the structure of the existing micro switches needs to be improved. Summary of the Invention

[0004] The object of the present invention is to provide a clip-type micro switch with good assembly stability and smooth signal switching.

[0005] To solve the above technical problems, the present invention can be implemented by adopting the following technical solutions:

[0006] A clip-type micro switch comprises: a base, wherein two ends of the base are respectively provided with a common terminal and an output terminal, wherein the output terminal is a normally closed terminal or a normally open terminal, and a first limiting column is provided in the middle of the base;

[0007] a housing, the housing covering the base and forming a receiving cavity;

[0008] A latch comprising a pressing block and a pressing post connected to one end of the pressing block, the pressing block being disposed in the accommodating cavity, the pressing post penetrating through the top of the housing and extending outward, a mounting groove being provided at the other end of the pressing block, and a second limiting post being provided in the middle of the mounting groove;

[0009] A clamp is disposed in the mounting slot, with the middle portion being sleeved on the second limiting column, the fixed walls on both sides of the clamp respectively abutting against the side walls of the mounting slot, and the clamp is provided with a clamping portion at each end, wherein the clamping portion at one end clamps the common terminal, and the clamping portion at the other end clamps the output terminal;

[0010] A spring is arranged in the accommodating cavity, one end of the spring is sleeved on the first limiting column and abuts against the base, and the other end is sleeved on the second limiting column and abuts against the clamp.

[0011] In one embodiment, the two side walls of the installation groove are respectively provided with a bayonet, and the fixed walls on both sides of the clamp are respectively provided with a clamping block adapted to the bayonet. The clamp is placed in the installation groove, and the clamping block is buckled into the bayonet, so that the clamp is clamped in the installation groove.

[0012] In one embodiment, the clamping portion includes two clamping plates in a clamping state, the clamping plates include connecting arms and contact arms, and the two contact arms are provided with opposing ribs.

[0013] In one embodiment, the base is provided with an insulating portion at one end where the output terminal is provided. When the output terminal is a normally closed terminal, the insulating portion is provided below the normally closed terminal, and the thickness of the insulating portion is the same as that of the normally closed terminal. In the initial state, the clamping portions at both ends of the clip are clamped on the normally closed terminal and the common terminal, respectively.

[0014] In one embodiment, the base is provided with an insulating portion at one end where the output terminal is provided. When the output terminal is a normally open terminal, the insulating portion is provided above the normally open terminal, and the thickness of the insulating portion is the same as that of the normally open terminal. In the initial state, the clamping portions at both ends of the clip are clamped on the insulating portion and the common terminal respectively.

[0015] In one embodiment, the two contact arms are designed to be at an angle.

[0016] In one embodiment, a sealing ring is further sleeved on the pressing post, one end of the sealing ring is clamped on the pressing post, and the other end is sealed and bonded to the housing.

[0017] In one embodiment, the housing and the base are sealed together by a sealant.

[0018] In one embodiment, the common terminal and the output terminal are mounted on the base by using a plastic coating process or a terminal plugging process.

[0019] The beneficial effects of the present invention are as follows: the clip-type micro switch of the present invention is mainly composed of a base, a common terminal, an output terminal, a shell, a button, a clip and a spring. It has few components and a simple structure. During assembly, the two ends of the clip are respectively clamped on the common terminal and the output terminal, thereby realizing double-sided clamping guidance, making the connection between the common terminal and the output terminal more stable; in addition, the design of the convex rib can enhance the stability of the clamping part when it slides up and down with the common terminal and the output terminal, ultimately increasing the overall stability of the micro switch and making signal switching smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded schematic diagram of a first embodiment of a clip-type micro switch according to the present invention;

[0021] Figure 2This is a cross-sectional view of a first embodiment of a clip-type micro switch according to the present invention;

[0022] Figure 3 This is a schematic diagram of the actuator structure of a first embodiment of a clip-type micro switch according to the present invention;

[0023] Figure 4 This is a schematic diagram of the clip structure of a first embodiment of a clip-type micro switch of the present invention;

[0024] Figure 5 This is an exploded schematic diagram of a second embodiment of a clip-type micro switch of the present invention;

[0025] Figure 6 This is a cross-sectional view of a second embodiment of the clip-type micro switch of the present invention.

[0026] As shown in the attached figure:

[0027] 100, base; 110, first limiting column; 120, insulating portion;

[0028] 200. Common terminal;

[0029] 300, output terminal;

[0030] 400, shell;

[0031] 500, button; 510, pressing portion; 511, mounting slot; 512, second limiting column; 513, bayonet; 520, pressing column;

[0032] 600, clamp; 610, fixed wall; 620, clamping portion; 621, connecting arm; 622, contact arm; 623, rib; 630, clamping block;

[0033] 700, spring;

[0034] 800. Sealing ring. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only."

[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0038] Example 1:

[0039] Please refer to Figures 1 to 4 A clip-type micro switch includes: a base 100, with a common terminal 200 and an output terminal 300 respectively provided at both ends of the base 100, wherein the output terminal 300 is a normally open terminal or a normally open terminal, and a first limiting column 110 is provided in the middle of the base 100;

[0040] a housing 400, the housing 400 being covered on the base 200 and forming a receiving cavity;

[0041] A push-button 500 includes a push-button block 510 and a push-button post 520 connected to one end of the push-button block 510. The push-button block 510 is disposed in the accommodating cavity, and the push-button post 520 extends outward through the top of the housing 400. A mounting groove 511 is provided at the other end of the push-button block 510, and a second limiting post 512 is provided in the middle of the mounting groove 511.

[0042] A clamp 600 is disposed in the mounting groove 511 and has its middle portion sleeved on the second limiting post 512. The fixing walls 610 on either side of the clamp 600 abut against the side walls of the mounting groove 511. The clamp 600 has clamping portions 620 at each end. The clamping portion 620 at one end clamps the common terminal 200, while the clamping portion 620 at the other end clamps the output terminal 300.

[0043] A spring 700 is disposed in the accommodating cavity, one end of the spring 700 is sleeved on the first limiting column 110 and abuts against the base 100 , and the other end is sleeved on the second limiting column 512 and abuts against the clamp 600 .

[0044] Specifically, in this embodiment, the micro switch is mainly composed of a base 100, a common terminal 200, an output terminal 300, a housing 400, a press button 500, a clip 600 and a spring 700. It has few components. During assembly, the common terminal 200 and the output terminal 300 are respectively arranged at both ends of the base 100, and the two ends of the common terminal 200 and the output terminal 300 extend outward respectively, while the housing 400 is covered on the base 100 to form a receiving cavity, the pressing block 510 of the press button 500 is placed in the receiving cavity, the pressing column 520 penetrates the top of the housing 400 and extends outward, and the clip 600 is located at the pressing block 510. 10, the clamping parts 620 at both ends clamp the common terminal 200 and the output terminal 300 respectively, and the two ends of the spring 700 are respectively sleeved on the first limiting column 110 and the second limiting column 512, and abut against the middle of the base 100 and the clamp 600, wherein the first limiting column 110 and the second limiting column 512 can limit the spring 700 to prevent it from offset during squeezing or resetting, and the second limiting column 512 can also limit the clamp 600, which is convenient for assembling the clamp 600. Finally, the assembly of the micro switch is completed, and the assembled structure is simple, and the connection between the components is reasonable.

[0045] In addition, when the clamp 600 is assembled into the mounting groove 511 of the pressing block 510, the fixed walls 610 on both sides of the clamp 600 will abut against the side walls of the mounting groove 511. The mutual abutment between the two can effectively prevent the side expansion and deformation of the clamp 600. At the same time, the clamping force of the clamp 600 can also be controlled, thereby making the connection between the clamp 600 and the common terminal 200 and the output terminal 300 more stable.

[0046] In this embodiment, the output terminal 300 is a normally closed terminal. In order to switch the signal, an insulating portion 120 is provided on the base 100. The insulating portion 120 is provided below the output terminal 300 (normally closed terminal). The thickness of the insulating portion 120 is the same as that of the normally closed terminal. When the micro switch is assembled, the clamping portions 620 at both ends of the clip 600 will be clamped on the normally closed terminal and the common terminal 200 respectively. If signal switching is required, the button 500 can be pressed down by the button 500 to press the clip 600, thereby closing the two ends. The clamping portion 620 slides downward. When the clamping portion 620 clamped on the normally closed terminal slides down to the insulating portion 120, the signal will be cut off. After releasing the button 500, the button 500 will be reset by the elastic force of the spring 700, so that the clamp 600 is reset upward, and the clamping portion 620 is clamped on the normally closed terminal and the common terminal 200 again, so that the signal is connected again. Finally, the signal is turned on and off. Moreover, due to the use of double-sided clamping and synchronous operation, the signal is more stable when it is turned on, and the signal switching is smoother.

[0047] See also Figure 3 and Figure 4 In order to realize the installation of the clamp 600, a mounting groove 511 is provided at the bottom of the pressing block 510, and a bayonet 513 is respectively provided on the two side walls of the mounting groove 511. At the same time, a clamping block 630 adapted to the bayonet 613 is respectively provided on the fixed wall 610 on both sides of the clamp 600, wherein the bottom end of the clamping block 630 is tilted and opened toward the outside of the fixed wall 610. When the clamp 600 is assembled, the clamp 600 is placed in the mounting groove 511, and the middle part thereof is sleeved on the first The two limiting columns 512 are used to limit the position, and the block 630 that is tilted and opened outward will be buckled into the bayonet 513, and its opened bottom end is locked into the bayonet 513, so that the clamp 600 is clamped in the installation groove 511. Finally, the block 630 and the bayonet 513 make the assembly between the clamp 600 and the pressing block 510 stable. At the same time, the clamping part 620 of the clamp 600 is also more stable and smooth when clamping the common terminal 200 and the normally closed terminal and sliding up and down.

[0048] See also Figure 4 In order to enable the clamping portion 620 to clamp the common terminal 200 and the output terminal 300, the clamping portion 620 in this embodiment includes two clamping plates in a clamping state. At the same time, the two clamping plates respectively include a connecting arm 621 and a contact arm 622, and the two contact arms 622 are designed at an angle, and opposite ribs 623 are provided on the two contact arms 622. When the clamping portion 620 clamps the common terminal 200 and the output terminal 300, the ribs 623 on the contact arms 622 contact the common terminal 200 and the output terminal 300. The design of the ribs 623 can increase the contact area between the clamp 600 and the common terminal 200 and the output terminal 300, and the ribs 623 and the contact arms 622 are designed as an integral whole. Ultimately, the connection between the clamp 600 and the common terminal 200 and the output terminal 300 can be made more stable when sliding up and down.

[0049] See also Figure 4 In this embodiment, the clamping portion 620 needs to slide up and down when the signal is switched. In order to prevent the clamping portion 620 from being damaged or deformed when sliding up and down, outwardly flared inclined arms can be provided at the bottom of the two contact arms 622, so that the inclined arms are trumpet-shaped. The trumpet-shaped inclined arms can prevent the clamping portion 620 from sliding on the common terminal 200 and the output terminal 300 without causing any obstruction, so that the clamping portion 620 can slide smoothly, thereby avoiding damage or deformation of the clamping portion 620.

[0050] See also Figure 1 or Figure 2Because micro switches are widely used, they need to be dustproof and waterproof. Therefore, a sealing ring 800 is also provided on the pressing column 620, and one end of the sealing ring 800 is clamped on the pressing column 620, and the other end is sealed and bonded to the shell 400. At the same time, the cover joint of the shell 400 and the base 100 is sealed by sealant, and the common terminal 200 and the output terminal 300 are installed on the base 100 by using a plastic coating process or a plug-in terminal process. Finally, the sealing of the accommodating cavity is achieved, and the dustproof and waterproof functions are realized, and the oxidation of the internal clip 600, spring 700, common terminal 200 and output terminal 300 is avoided, thereby improving the service life of the micro switch.

[0051] Example 2:

[0052] The clip-type micro switch in this embodiment is basically the same as that in the first embodiment, with the main difference being that the output terminal 300 is a normally open terminal.

[0053] See also Figure 5 and Figure 6 When the output terminal 300 is a normally open terminal, the insulating portion 120 provided on the base 100 is provided above the output terminal 300 (normally open terminal), and the thickness of the insulating portion 120 is the same as that of the normally open terminal. During assembly, the clamping portions 620 at both ends of the clip 600 are clamped on the insulating portion 120 and the common terminal 200 respectively. When the signal needs to be switched, the button 500 is pressed, and the button 500 presses the clip 600 downward. When the clip 600 is pressed downward, the clamping portion 620 is clamped between the insulating portion 120 and the common terminal. When the button 500 is released, the button 500 is reset under the elastic force of the spring 700, so that the clamping part 620 slides upward and resets, and is clamped on the insulating part 120 and the common terminal 200 again to cut off the signal. Finally, by adopting double-sided clamping, synchronous up and down sliding is achieved, so that the signal is more stable when it is turned on and the signal switching is smoother.

[0054] In summary, the clamping guide of the double-sided clamping part 620 can achieve synchronous up and down sliding, thereby realizing the conduction and disconnection of the signal, making the signal switching smoother and the signal conduction more stable. At the same time, the integrated rib 623 can also increase the connection between the clamping part 620 and the common terminal 200 and the output terminal 300, making the connection more stable. The buckle connection between the clamp 600 and the pressing block 510 makes the assembly between the clamp 600 and the pressing block 510 firm, and facilitates the clamping part 620 of the clamp 600 to slide up and down. Finally, the overall structure of the micro switch is simple, the design is reasonable, and the stability is good.

[0055] The above illustrates and describes the basic principles, main features, and advantages of the present invention. Any equivalent variations, modifications, and developments of the above-disclosed technical contents made by persons skilled in the art without departing from the scope of the present invention are considered equivalent embodiments of the present invention. Furthermore, any equivalent variations, modifications, and developments of the above-disclosed technical contents based on the essential technology of the present invention remain within the scope of protection of the present invention.

Claims

1. A clip-type micro switch, characterized in that: include: A base, wherein a common terminal and an output terminal are respectively provided at both ends of the base, and the common terminal and the output terminal are installed on the base using a plastic coating process or a plug-in terminal process, wherein the output terminal is a normally closed terminal or a normally open terminal, and a first limiting column is provided in the middle of the base; a housing, the housing covering the base and forming a receiving cavity; A latch comprising a pressing block and a pressing post connected to one end of the pressing block, the pressing block being disposed in the accommodating cavity, the pressing post penetrating through the top of the housing and extending outward, a mounting groove being provided at the other end of the pressing block, and a second limiting post being provided in the middle of the mounting groove; A clamp is provided in the mounting groove, and the middle portion of the clamp is sleeved on the second limiting column. The fixed walls on both sides of the clamp are respectively in contact with the side walls of the mounting groove. The two ends of the clamp are respectively provided with clamping portions, wherein the clamping portion at one end clamps the common terminal, and the clamping portion at the other end clamps the output terminal; A spring is disposed in the accommodating cavity, one end of the spring is sleeved on the first limiting post and abuts against the base, and the other end is sleeved on the second limiting post and abuts against the clamp; The two side walls of the installation groove are respectively provided with a bayonet, and the fixed walls on both sides of the clip are respectively provided with a clamping block adapted to the bayonet. The clip is placed in the installation groove, and the clamping block is buckled into the bayonet, so that the clip is clamped in the installation groove; The clamping portion includes two clamping plates in a clamping state. The clamping plates include connecting arms and contact arms. The two contact arms are provided with opposite convex ribs.

2. The clip-type micro switch according to claim 1, characterized in that: The base is provided with an insulating portion at one end where the output terminal is provided. When the output terminal is a normally closed terminal, the insulating portion is provided below the normally closed terminal, and the thickness of the insulating portion is the same as that of the normally closed terminal. In the initial state, the clamping portions at both ends of the clamp are clamped on the normally closed terminal and the common terminal respectively.

3. The clip-type micro switch according to claim 1, characterized in that: The base is provided with an insulating portion at one end where the output terminal is provided. When the output terminal is a normally open terminal, the insulating portion is provided above the normally open terminal, and the thickness of the insulating portion is the same as that of the normally open terminal. In the initial state, the clamping portions at both ends of the clip are clamped on the insulating portion and the common terminal respectively.

4. The clip-type micro switch according to claim 1, characterized in that: The two contact arms are designed to be at an angle.

5. The clip-type micro switch according to claim 1, characterized in that: The pressing column is also sleeved with a sealing ring, one end of the sealing ring is clamped on the pressing column, and the other end is sealed and bonded to the shell.

6. The clip-type micro switch according to claim 1, characterized in that: The housing and the base are sealed and connected at their joints by means of sealant.

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