A new type of tension spring microswitch

Abstract

This utility model relates to the field of micro switch technology and discloses a novel tension spring micro switch, including a base. A slot is provided in the middle of the base, which engages with the right side of a movable bracket. A movable contact component is located above the movable bracket and is connected to the upper part of the movable bracket via a tension spring. A sliding groove is provided on the upper left side of the base, through which a button that cooperates with the movable bracket is slidably connected. Normally closed and normally open contact components, respectively, are located on the upper and lower sides of the right end of the movable contact component and engage with the base. A support foot is provided at the bottom of the base, with one side of the support foot located inside the base and connected to the left side of the movable contact component. This utility model applies to a novel tension spring micro switch, using a tension spring to connect the movable bracket and the movable contact component. The fulcrum of the movable bracket is located on the right side of the base, significantly increasing the switch lever arm length and ensuring contact pressure at the switch contacts while achieving the light pressure requirement of the overall switch.

Description

Technical Field

[0001] This utility model relates to the field of micro switch technology, specifically a novel tension spring micro switch. Background Technology

[0002] Micro switches are widely used in various fields such as electronics, electrical appliances, instruments, electromechanical equipment, broadcasting and communications, home appliances, medical devices, automobiles, and automation control. With technological advancements, the demands for micro switches across industries are changing. Currently, most micro switches on the market suffer from drawbacks such as low current carrying capacity, high cost, complex assembly, and relatively high operating force. Utility Model Content

[0003] This invention provides a novel tension spring micro switch that solves the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A novel tension spring micro switch includes a base with a slot in the middle that engages with the right side of a movable bracket. A movable contact component is located above the movable bracket and connected to the upper part of the movable bracket via a tension spring. A sliding groove is located on the upper left side of the base, through which a button that mates with the movable bracket is slidably connected. Normally closed and normally open contact components, which engage with the base, are located on the upper and lower sides of the right end of the movable contact component. A support foot is located at the bottom of the base, with one side of the support foot inside the base connected to the left side of the movable contact component.

[0006] As a preferred embodiment of this utility model, the base has a top cover snapped onto its front side.

[0007] As a preferred embodiment of this utility model, the tension spring is made of stainless steel.

[0008] The present invention has the following advantages:

[0009] This utility model applies to a novel tension spring micro switch, which uses a tension spring to connect the movable bracket and the moving contact component. The fulcrum of the movable bracket is located on the right side of the base, which greatly increases the length of the switch lever arm. This ensures the contact pressure of the switch contacts while meeting the light pressure requirements of the overall switch. The base and the top cover are fixedly connected by an interference fit, making assembly convenient and reducing costs. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of a new type of tension spring micro switch.

[0012] Figure 2 This is a schematic diagram of the internal structure of the base in a new type of tension spring micro switch.

[0013] Figure 3 This is an exploded view of a new type of tension spring micro switch.

[0014] Figure 4 This is a schematic diagram of the structure of the moving contact component and the movable bracket in a new type of tension spring micro switch.

[0015] In the diagram: 1. Button; 2. Base; 3. Moving contact piece; 4. Movable bracket; 5. Bracket foot; 6. Normally open contact piece; 7. Normally closed contact piece; 8. Tension spring; 9. Top cover. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In one embodiment, see Figures 1-4A novel tension spring micro switch includes a base 2 with a slot in the middle that engages with the right side of a movable bracket 4. A movable contact component 3 is positioned above the movable bracket 4 and connected to the upper part of the bracket 4 via a tension spring 8. The base 2, consisting of the switch body and a top cover 9, uses an interference fit to fix the contact feet and includes a guide groove for the button 1 to move up and down. The movable bracket 4 is installed inside the switch, with one end connected to the movable contact component 3 via the tension spring 8 and the other end connected to the slot on the right side of the base 2, providing support. The movable contact component 3 includes a movable contact and a movable contact point. The movable contact is engaged with a bracket foot 5, and the movable contact point is connected to one side of the movable contact. The movable contact component 3 can be classified as a double-throw movable contact component 3, a normally open movable contact component 3, or a normally closed movable contact component 3. The tension spring 8 is made of stainless steel and is connected at both ends to the movable contact component 3 and the movable bracket 4, providing a reset force for the switch to turn on or off.

[0018] In one embodiment, a sliding groove is provided on the upper left side of the base 2, and a button 1 that cooperates with the movable bracket 4 is slidably connected to the sliding groove. The button 1 is an exposed operating component of the switch, and the exposed length can be of various types, which can be selected according to customer needs.

[0019] In one embodiment, normally closed contact component 7 and normally open contact component 6, which are engaged with base 2, are respectively provided on the upper and lower sides of the right end of the moving contact component 3. A support leg 5 is provided at the bottom of the base 2, and the support leg 5 is located inside the base 2 and connected to the left side of the moving contact component 3. One end of the support leg 5 is installed inside the switch and connected to the moving contact component 3, while the other end is exposed outside the switch as a COM output terminal. The normally open contact component 6 includes a normally open contact foot and a normally open stationary contact. One end of the stationary contact is installed inside the switch, and the other end is exposed as an output terminal. The normally closed contact component 7 includes a normally closed contact foot and a normally closed stationary contact. One end of the stationary contact is installed inside the switch, and the other end is exposed as an output terminal.

[0020] In one embodiment, the upper cover 9 is snapped onto the front of the base 2. The upper cover 9 and the base 2 are fixed with an interference fit, and the lower support foot 5, normally open contact foot component 6, normally closed contact foot component 7 and the base 2 cooperate to form a cavity.

[0021] The moving contact component 3 is connected to the movable bracket 4 by the tension spring 8 and is supported on the contact point A of the bracket foot 5, while the movable bracket 4 is supported on the contact point B of the base 2. This structure increases the lever arm length of the switch, thereby ensuring the contact pressure between the switch contacts under light pressure and improving the stability of the switch.

[0022] In this embodiment, when force is applied to the top of button 1, button 1 will slide downward along the groove of base 2, pushing the movable bracket 4 to rotate with the other end of base 2 as the fulcrum. Since there is a tension spring 8 between the movable bracket 4 and the moving contact component 3, after the movable bracket 4 moves downward a certain distance, the connection point between the moving contact component 3 and the tension spring 8 is lower than the support point of the bracket foot 5. At this point, one end of the contact of the moving contact component 3 will quickly disconnect from the contact of the normally closed contact component 7 of NC and connect with the contact of the normally open contact component 6 of NO. Thus, the function of connecting or disconnecting the COM output pin of the switch with the NC pin output pin and the NO pin output pin is indirectly realized.

[0023] This utility model applies to a novel tension spring micro switch, which uses a tension spring 8 to connect the movable bracket 4 and the moving contact piece 3. The fulcrum of the movable bracket 4 is located on the right side of the base 2, which greatly increases the length of the switch lever arm. This ensures the contact pressure of the switch contacts while meeting the light pressure requirements of the overall switch. The base 2 and the top cover 9 are fixedly connected by an interference fit, which makes assembly convenient and reduces costs.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel tension spring micro switch, characterized in that, The device includes a base with a slot in the middle that engages with the right side of a movable bracket. A movable contact component is located above the movable bracket and is connected to the upper part of the movable bracket via a tension spring. A sliding groove is located on the upper left side of the base, through which a button that engages with the movable bracket is slidably connected. Normally closed and normally open contact components, which engage with the base, are located on the upper and lower sides of the right end of the movable contact component. A support foot is located at the bottom of the base and is located inside the base, connecting to the left side of the movable contact component.

2. The novel tension spring micro switch according to claim 1, characterized in that, The base has a top cover snapped onto its front.

3. The novel tension spring micro switch according to claim 1, characterized in that, The tension spring is made of stainless steel.

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