Search

CN-224204010-U - Composite device for keyboard contacts

CN224204010UCN 224204010 UCN224204010 UCN 224204010UCN-224204010-U

Abstract

The utility model relates to the technical field of keyboards, in particular to a composite device for keyboard contacts, which comprises a contact substrate and a keyboard, wherein alloy materials are inlaid on the top contact working surface of the contact substrate, the alloy materials are copper-based alloys, mounting grooves are formed in the upper surface of the keyboard, clamping grooves are formed in the front and rear groove walls of the mounting grooves, integrally formed contact surface layers are arranged on the alloy materials, the contact surface layers are conical, the longitudinal sections of the contact surface layers are isosceles trapezoids, the contact surface layers and the alloy materials are integrally formed, arc-shaped elastic sheets used for being clamped into the clamping grooves are arranged on the front and rear surfaces of the contact substrate, and integrally formed positioning marks are arranged on the side walls of the contact substrate. The keyboard contact composite device is characterized in that a high-conductivity material is inlaid on a working surface, so that resistance loss is reduced, sensitivity is improved, a wear-resistant process is adopted, the service period is prolonged, the material is inlaid on a key surface, the consumption of noble metal is reduced, and the cost is reduced.

Inventors

  • Lou Chizheng
  • ZHANG YANYAN
  • WANG GUODONG

Assignees

  • 兰溪市金铎金属材料科技有限公司

Dates

Publication Date
20260505
Application Date
20250526

Claims (6)

  1. 1. The composite device for the keyboard contacts comprises a contact substrate (1) and a keyboard (5) and is characterized in that an alloy material (2) is inlaid on a top contact working surface of the contact substrate (1), the alloy material (2) is a copper-based alloy, the alloy material (2) is subjected to a heat treatment process, the alloy material (2) and the contact substrate (1) are firmly combined through a high-temperature sintering process, an installation groove (6) for the contact substrate (1) to enter is formed in the upper surface of the keyboard (5), and clamping grooves (11) are formed in front and rear groove walls of the installation groove (6); Be equipped with integrated into one piece's contact surface layer (3) on alloy material (2), contact surface layer (3) are the taper, and the longitudinal section of contact surface layer (3) is isosceles trapezoid, contact surface layer (3) and alloy material (2) integrated into one piece, the front and back surface of contact base member (1) all is equipped with arc shell fragment (12) that are used for the card to go into in draw-in groove (11), contact base member (1) lateral wall is equipped with integrated into one piece's location sign (4), location sign (4) are used for guaranteeing that contact base member (1) install in mounting groove (6) fast accurately.
  2. 2. The composite device for keyboard contacts according to claim 1, wherein a buffer layer (7) is arranged at the bottom of the contact substrate (1), the buffer layer (7) is made of a silica gel material, an adhesive patch (8) is arranged at the bottom of the buffer layer (7), and the adhesive patch (8) is made of a double-sided adhesive material.
  3. 3. A composite device for a keyboard contact according to claim 1, characterized in that the surface of the contact surface layer (3) is coated with a nano silver coating, the thickness of the nano silver coating being 0.15 mm.
  4. 4. A composite device for a keyboard contact according to claim 1, wherein a plurality of hemispherical protrusions (9) are fixedly arranged on the peripheral side surfaces of the contact surface layer (3), and the diameter of the hemispherical protrusions (9) is 0.5 mm.
  5. 5. The composite device for keyboard contacts according to claim 1, wherein the positioning mark (4) comprises two cylinders (10), a mounting plate is fixedly mounted on one side of the contact base body (1), the two cylinders (10) are vertically and fixedly mounted on the lower surface of the mounting plate, a groove (13) with an equilateral triangle cross section is formed in one side, far away from the cylinders (10), of the contact base body (1), a triangular block (14) for being inserted into the groove (13) is fixedly mounted on the groove wall of the clamping groove (11), the thickness of the groove (13) is larger than that of the triangular block (14), and two circular grooves (15) for being respectively used for inserting the bottom ends of the two cylinders (10) are formed in the upper surface of the keyboard (5).
  6. 6. A composite device for a keyboard contact according to claim 5, characterized in that the surface of the cylinder (10), the walls of the recess (13), the surface of the triangular block (14) and the walls of the circular recess (15) are coated with a fluorescent coating.

Description

Composite device for keyboard contacts Technical Field The utility model relates to the technical field of keyboards, in particular to a composite device for keyboard contacts. Background In the current keyboard manufacturing field, the keyboard contact is a key component for realizing key signal transmission, and the traditional keyboard contact has various manufacturing processes, wherein the whole surface gold plating process is more common, and the whole outer surface of the contact is uniformly covered with a gold film. The hardware fitting has excellent conductivity and oxidation resistance, and in this way, the stable conductivity of the contact in the use process can be ensured to a certain extent, and the problem of poor contact caused by factors such as oxidation is reduced. The traditional mode of gold plating on the whole surface of the keyboard contact has the problems of higher cost, easiness in abrasion of a gold-plated part of a non-contact working surface, resource waste and the like in the long-term use process, and along with diversification and high-frequency of the keyboard use scene, higher requirements on the sensitivity and service life of the keyboard contact are put forward, and a new keyboard contact composite device is needed to solve the problems. Disclosure of utility model The utility model aims to solve the defects in the prior art that the whole surface of a traditional keyboard contact is plated with gold in a mode that the cost is high, and in the long-term use process, a gold-plated part of a non-contact working surface is easy to wear, resources are wasted and the like. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The composite device for the keyboard contacts comprises a contact substrate and a keyboard, wherein alloy materials are inlaid on the top contact working surface of the contact substrate, the alloy materials are copper-based alloy, the alloy materials are subjected to a heat treatment process, the alloy materials and the contact substrate are firmly combined through a high-temperature sintering process, the upper surface of the keyboard is provided with a mounting groove for the contact substrate to enter, and the front groove wall and the rear groove wall of the mounting groove are provided with clamping grooves; The contact surface layer is conical, the longitudinal section of the contact surface layer is isosceles trapezoid, the contact surface layer and the alloy material are integrally formed, the front surface and the rear surface of the contact substrate are respectively provided with an arc-shaped elastic sheet used for being clamped into the clamping groove, the side wall of the contact substrate is provided with an integrally formed positioning mark, and the positioning mark is used for ensuring that the contact substrate is quickly and accurately installed in the installation groove. Preferably, a buffer layer is arranged at the bottom of the contact substrate, the buffer layer is made of a silica gel material, an adhesive patch is arranged at the bottom of the buffer layer, and the adhesive patch is made of a double-sided adhesive material. Preferably, the surface of the contact surface layer is plated with a nano silver coating, and the thickness of the nano silver coating is 0.15 millimeter. Preferably, a plurality of hemispherical bulges are fixedly arranged on the peripheral side surfaces of the contact surface layer, and the diameter of each hemispherical bulge is 0.5 millimeter. Preferably, the positioning mark comprises two cylinders, one side of the contact substrate is fixedly provided with a placement plate, two cylinders are vertically and fixedly arranged on the lower surface of the placement plate, one side of the contact substrate, which is far away from the cylinders, is provided with a groove with the cross section of an equilateral triangle, the groove wall of the clamping groove is fixedly provided with a triangular block used for being inserted into the groove, the thickness of the groove is larger than that of the triangular block, and the upper surface of the keyboard is provided with two round grooves respectively used for being inserted into the bottom ends of the two cylinders. Preferably, the surface of the cylinder, the wall of the groove, the surface of the triangular block and the wall of the circular groove are coated with fluorescent coatings. The utility model has the beneficial effects that: The high conductive material is inlaid on the contact working surface, so that the resistance loss in the signal transmission process is reduced, key trigger signals can be more rapidly and accurately transmitted to a keyboard circuit, the sensitivity of the keyboard contacts is remarkably improved, the contact working surface inlaid part and the pressed contact surface layer part are made of wear-resistant materials and processes, the problem of poor contact and the like