Membrane switch structure capable of prolonging service life of key

Abstract

A membrane switch structure capable of prolonging the service life of a key comprises a conductive base material, conductive ink, an isolation rubber material and a panel which are sequentially arranged from bottom to top, a hole is dug in the isolation rubber material to form an assembly cavity communicated with the conductive ink and the panel, a metal elastic piece is arranged in the assembly cavity, and hardened ink is arranged on the portion, making contact with the conductive ink, of the metal elastic piece in a cushioned mode. According to the membrane switch structure capable of prolonging the service life of the key provided by the utility model, the hardened printing ink is padded at the contact part of the metal elastic sheet and the conductive printing ink, so that when the metal elastic sheet is pressed, the hardened printing ink can buffer the pressure of the metal elastic sheet on the conductive printing ink, and the direct friction between the metal elastic sheet and the conductive printing ink is reduced; the risk that the conductive ink is pressed and damaged is effectively reduced, and the service life of the key is remarkably prolonged.

Description

Technical Field

[0001] This utility model relates to the field of membrane switch technology, and in particular to a membrane switch structure that improves the lifespan of buttons. Background Technology

[0002] Membrane switches are widely used in the medical, industrial, and home appliance fields. Currently, the common structure of membrane switches involves direct contact between a metal spring and the conductive ink on a printed circuit board. When a user presses the membrane switch button for an extended period, the metal spring continuously applies pressure to the conductive ink. Because the metal spring is relatively hard, frequent pressing can easily wear down the conductive ink layer and even damage the printed circuit board. This not only reduces the conductivity of the membrane switch but can also cause the entire switch to malfunction, significantly impacting the product's normal use and lifespan. Therefore, developing a structure that effectively improves the lifespan of membrane switch buttons and prevents damage to the conductive ink caused by metal spring pressure is urgently needed.

[0003] Therefore, in view of the shortcomings of the existing technology, it is necessary to design a membrane switch structure that can improve the lifespan of the button in order to solve the above problems. Utility Model Content

[0004] To overcome the shortcomings of the prior art, the present invention aims to provide a membrane switch structure that improves the lifespan of buttons.

[0005] To achieve the above and other related objectives, the technical solution provided by this utility model is: a membrane switch structure for improving button life, comprising a conductive substrate, conductive ink, insulating adhesive and panel arranged sequentially from bottom to top, wherein the insulating adhesive has holes to form an assembly cavity connecting the conductive ink and the panel, and a metal spring is provided in the assembly cavity, wherein the part of the metal spring that contacts the conductive ink is padded with hardened ink.

[0006] The preferred technical solution is that the metal spring is configured as a pot-shaped structure and is placed in the assembly cavity.

[0007] The preferred technical solution is that the hardened ink is formed into a ring structure and is placed on the bottom side of the metal spring sheet.

[0008] Due to the application of the above technical solution, the beneficial effects of this utility model are as follows:

[0009] This utility model provides a membrane switch structure to improve the lifespan of buttons. By padding the part of the metal spring that contacts the conductive ink with hardened ink, when the metal spring is pressed, the hardened ink can buffer the pressure of the metal spring on the conductive ink, reduce the direct friction between the metal spring and the conductive ink, effectively reduce the risk of the conductive ink being damaged by pressing, and thus significantly increase the lifespan of the button. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the cross-section of the membrane switch involved in this utility model. Detailed Implementation

[0011] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0012] Please see Figure 1 It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0013] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0014] Example:

[0015] like Figure 1As shown, according to an overall technical concept of this utility model, a membrane switch structure for improving button life is provided, including a conductive substrate 1, conductive ink 2, insulating adhesive 3 and panel 4 arranged sequentially from bottom to top. Holes are cut in the insulating adhesive 3 to form an assembly cavity 31 that connects the conductive ink 2 and the panel 4. A metal spring 5 is provided in the assembly cavity 31, and a hardened ink 6 is provided on the part of the metal spring 5 that contacts the conductive ink 2.

[0016] like Figure 1 As shown, in an exemplary embodiment of this utility model, the metal spring 5 is configured as a pot-shaped structure and covers the assembly cavity 31. This structure has a strong deformation recovery capability.

[0017] like Figure 1 As shown, in an exemplary embodiment of this utility model, the hardening ink 6 is configured as a ring structure and is placed on the bottom side of the metal spring sheet 5.

[0018] Therefore, this utility model has the following advantages:

[0019] 1. Extend button lifespan: By padding the part of the metal spring that contacts the conductive ink, the hardened ink can buffer the pressure of the metal spring on the conductive ink when the metal spring is pressed, reducing direct friction between the metal spring and the conductive ink, effectively reducing the risk of the conductive ink being damaged by pressure, and thus significantly increasing the button lifespan.

[0020] 2. Ensure stable product operation: Avoid functional failures caused by frequent button damage, enabling membrane switches to operate stably in medical, industrial, and home appliance equipment, improving equipment reliability and stability, reducing the frequency of equipment repair or replacement due to membrane switch failure, and lowering maintenance costs.

[0021] 3. Simple structure and easy to implement: This membrane switch structure is simply an addition of a layer of hardened ink to the existing structure. It does not require large-scale modifications to the overall structure of the product, thus not affecting the original structure and function of the product. It is also easy to manufacture and promote its application, achieving a significant improvement in product performance with a small increase in cost.

[0022] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A membrane switch structure for improving button lifespan, characterized in that: The device includes, from bottom to top, a conductive substrate, conductive ink, a separating adhesive, and a panel. Holes are cut into the separating adhesive to form an assembly cavity that connects the conductive ink and the panel. A metal spring is provided in the assembly cavity, and a hardened ink is placed on the part of the metal spring that contacts the conductive ink.

2. The membrane switch structure for improving button life according to claim 1, characterized in that: The metal spring is configured as a pot-shaped structure and is placed in the assembly cavity.

3. The membrane switch structure for improving button life according to claim 1, characterized in that: The hardened ink is formed into a ring structure and is placed on the bottom side of the metal spring.

Images