Silver point structure of microswitch
By placing gold on the contact body of the micro switch only on the upper and lower contact surfaces, and using three-layer composite structure silver and copper materials to form the contact body, the precious metal waste caused by the comprehensive coverage of the entire contact in the prior art is solved, and the conductive performance and corrosion resistance are improved, while reducing costs.
Patent Information
- Application Number
- CN202421217888.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-05-30
AI Technical Summary
The contact gold plating layer of existing micro switches fully covers the entire contact, resulting in waste and increased costs of precious metal gold.
The contact body adopts a three-layer composite structure, where only gold is plated on the upper and lower contact surfaces, and other parts are not covered. Silver and copper materials are used to form the contact body, and silver materials are used at the position of the gold-plated layer to ensure conductivity and corrosion resistance.
It effectively improves the conductivity and corrosion resistance of the contact body, and at the same time reduces the covering of the gold-plated layer, saves the use of precious metal materials, reduces costs and improves production efficiency.
Smart Images
Figure CN222838707U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of micro switches, in particular to a silver point structure of a micro switch. Background Art
[0002] A micro switch is a switch with a small contact spacing and a snap-action mechanism. It uses a specified stroke and a specified force to perform a switch action. It is covered with a shell and has a drive 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 micro switch in the prior art uses contacts. In order to increase the conductivity of the contacts or increase their corrosion resistance, the outer surface of the contacts is plated with gold. However, the plating generally covers the contacts completely, and good precious metal gold has a high price cost. Utility Model Content
[0003] Based on the above problems, the utility model provides a silver dot structure of a micro switch which has a simple structure and saves precious metal materials.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a silver point structure of a micro switch, comprising a contact body, wherein the upper and lower contact surfaces of the contact body are gold-plated to form a gold-plated layer.
[0005] By adopting the above technical solution, the outer surface of the contact body is plated with gold. Since gold has a stable chemical reaction property, it has the advantages of excellent corrosion resistance, oxidation resistance, stable and reliable electrical conductivity, etc., which further improves the electrical conductivity of the contact body. The gold-plated layer only covers the upper and lower contact surfaces of the contact body, and does not cover other parts, thereby reducing the covered area of the gold-plated layer, improving the processing efficiency, and not affecting its performance. At the same time, it further saves the amount of precious metal gold, reduces costs, and improves production efficiency.
[0006] The utility model is further configured as follows: the contact body comprises a first silver layer, a base layer and a second silver layer, the base layer is arranged between the first silver layer and the second silver layer, the gold-plated layer is respectively arranged on the side of the first silver layer and the second silver layer facing away from the base layer, the first silver layer and the second silver layer are both made of silver, and the base layer is made of copper.
[0007] By adopting the above technical solution, the first silver layer and the second silver layer are made of silver material, so that both have the advantages of excellent corrosion resistance, stable conductivity, low contact resistance, etc. The base layer is made of copper material, which ensures the overall strength of the contact body. At the same time, the price of copper material is low, which greatly reduces the material cost. The contact body uses a three-layer composite structure, which saves precious metal silver materials, has low cost, and has good application prospects.
[0008] The utility model is further configured that: the first silver layer and the second silver layer have the same structure, and the thickness of the base layer is greater than the thickness of the first silver layer and the second silver layer.
[0009] By adopting the above technical solution, the first silver layer and the second silver layer have the same structure, which is convenient for subsequent installation operations and improves assembly efficiency. The thickness of the base layer is greater than that of the first silver layer and the second silver layer, and no longer affects the conductive properties thereof. At the same time, the amount of precious metal silver used is further reduced, thereby reducing manufacturing costs and having a reasonable structure.
[0010] The utility model is further configured that: the outer wall of the contact body is configured with rounded corners on all sides.
[0011] By adopting the above technical solution, the rounded corners are set so that the outer wall of the contact body has a smooth transition all around, which improves the impact resistance of the contact body and facilitates processing, thereby optimizing product performance. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 The structure of the embodiment of the utility model Figure 1 ;
[0013] Figure 2 The structure of the embodiment of the utility model Figure 2 ;
[0014] The meanings of the numbers in the figure are: 1-contact body, 101-first silver layer, 102-base layer, 103-second silver layer, 2-gold-plated layer. DETAILED DESCRIPTION
[0015] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.
[0016] See attached Figure 1-2 The utility model discloses a silver point structure of a micro switch, comprising a contact body 1, and the upper and lower contact surfaces of the contact body 1 are gold-plated to form a gold-plated layer 2. The outer surface of the contact body 1 is gold-plated, and because gold has a stable chemical reaction property, it has excellent corrosion resistance, oxidation resistance, and stable and reliable electrical conductivity, further improving the electrical conductivity of the contact body 1. The gold-plated layer 2 only covers the upper and lower contact surfaces of the contact body 1, and does not cover other parts, thereby reducing the covered parts of the gold-plated layer 2, improving processing efficiency, and not affecting its performance. At the same time, it further saves the amount of precious metal gold, reduces costs, and improves production efficiency.
[0017] This embodiment further provides: the contact body 1 includes a first silver layer 101, a base layer 102 and a second silver layer 103, the base layer 102 is arranged between the first silver layer 101 and the second silver layer 103, the gold-plated layer 2 is arranged on the first silver layer 101 and the second silver layer 103 on the side facing away from the base layer 102, the first silver layer 101 and the second silver layer 103 are both made of silver, and the base layer 102 is made of copper. The first silver layer 101 and the second silver layer 103 are made of silver, so that both have the advantages of excellent corrosion resistance, stable electrical conductivity, low contact resistance, etc. The base layer 102 is made of copper, which ensures the overall strength of the contact body 1. The price of copper material is low, which greatly reduces the material cost. The contact body 1 saves precious metal silver material through a three-layer composite structure, has low cost, and has good application prospects.
[0018] This embodiment further provides that: the first silver layer 101 and the second silver layer 103 have the same structure, and the thickness of the base layer 102 is greater than the thickness of the first silver layer 101 and the second silver layer 103. The first silver layer 101 and the second silver layer 103 have the same structure, which facilitates subsequent installation operations and improves assembly efficiency. The thickness of the base layer 102 is greater than the thickness of the first silver layer 101 and the second silver layer 103, which no longer affects its conductive properties, further reduces the amount of precious metal silver, reduces manufacturing costs, and has a reasonable structure.
[0019] This embodiment further provides that the outer wall of the contact body 1 is rounded on all sides. The rounded corners make the outer wall of the contact body 1 smooth, which improves the impact resistance of the contact body 1, facilitates processing, and optimizes product performance.
[0020] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.
Claims
1. A silver dot structure of a micro switch, characterized in that: It comprises a contact body, the upper and lower contact surfaces of the contact body are gold-plated to form a gold-plated layer, the contact body comprises a first silver layer, a base layer and a second silver layer, the base layer is arranged between the first silver layer and the second silver layer, the gold-plated layer is respectively arranged on the side of the first silver layer and the second silver layer facing away from the base layer, the first silver layer and the second silver layer are both made of silver, and the base layer is made of copper.
2. The silver dot structure of a micro switch according to claim 1, characterized in that: The first silver layer and the second silver layer have the same structure, and the thickness of the base layer is greater than that of the first silver layer and the second silver layer.
3. The silver dot structure of a micro switch according to claim 1, characterized in that: The outer wall of the contact body is rounded on all sides.