CN210136803U

CN210136803U - Mechanical switch

Info

Publication number: CN210136803U
Application number: CN201920969729.8U
Authority: CN
Inventors: 黄继飞
Original assignee: Shenzhen Hengyi Technology Co Ltd
Current assignee: Shenzhen Hengyi Technology Co Ltd; Shenzhen Doking Electronic Technology Co Ltd
Priority date: 2019-06-25
Filing date: 2019-06-25
Publication date: 2020-03-10
Anticipated expiration: 2029-06-25

Abstract

The utility model discloses a mechanical switch, including the switch body, switch body bottom is equipped with a center, this internal key shaft that is divided into the triaxial section that is equipped with of switch, the first axle section is connected with the key cap, set up the first through-hole that enables the key shaft to pass on the switch body, the outside protrusion of second axle section surface is formed with the spacing post that can the butt in first through-hole periphery, third axle section cover is equipped with a compression spring, compression spring one end is supported and is pressed in second axle section bottom, the other end supports and presses on the upper surface of center, the second through-hole that enables third axle section to pass is seted up to the center, switch body bottom corresponds the second through-hole and is equipped with a sheetmetal, the sheetmetal top is equipped with a conductive elastic piece, conductive elastic piece and sheetmetal piece are connected with mechanical keyboard's PCBA board electricity respectively. When the key cap is pressed down, the key shaft moves downwards to push the conductive elastic sheet to enable the conductive elastic sheet to be in elastic contact with the metal sheet downwards, obvious falling feeling is achieved, the compression spring brings pressure feeling and interactive feeling of the switch moving along with the fingers, and the service life of the keyboard using the mechanical switch is long.

Description

Mechanical switch

Technical Field

The utility model relates to a button technical field especially relates to a mechanical switch.

Background

The keyboard is the most common and main input device, English letters, numbers, punctuation marks and the like can be input into a computer through the keyboard, so that commands, input data and the like are sent to the computer, the membrane keyboard is widely used due to the low price, but along with the continuous improvement of living standard of people and the rapid development of electric competition, people put forward higher requirements on the comfort level, hand feeling and quality of using the computer, the membrane keyboard has short pressing stroke of a key switch, poor hand feeling and short service life, and the requirements of numerous users cannot be met.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a mechanical switch with simple structure, long service life and good hand feeling.

The utility model is realized by the following technical measures, a mechanical switch comprises a switch body, the switch body comprises an upper cover and a base which are connected up and down, a middle frame is connected above the base, a key shaft is arranged in the switch body, the key shaft is divided into a first shaft section, a second shaft section and a third shaft section from top to bottom in sequence, the shaft diameter of the first shaft section and the shaft diameter of the third shaft section are both smaller than the shaft diameter of the second shaft section, the first shaft section is connected with a key cap, the upper cover is provided with a first through hole which can lead the second shaft section to vertically pass, the outer surface of the lower part of the second shaft section is outwards protruded to form at least two limiting columns, the limiting columns can be abutted against the periphery of the first through hole, the third shaft section is sleeved with a compression spring, one end of the compression spring is abutted against the bottom of the second shaft section, the other end of the compression spring is abutted against the upper surface of the middle frame, the middle frame is provided with a second through hole which enables the third shaft section to vertically penetrate, the upper surface of the base is provided with a metal sheet corresponding to the second through hole, a conductive elastic sheet with the middle part protruding upwards is arranged above the metal sheet, the conductive elastic sheet and the metal sheet are spaced at a certain distance, and the conductive elastic sheet and the metal sheet are respectively electrically connected with a PCBA (printed Circuit Board Assembly) of the mechanical keyboard.

As a preferable mode, a connecting column capable of being sleeved on the first shaft section is formed in a downward protruding mode on the inner surface of the keycap, a shaft hole capable of being matched with the first shaft section is formed in the connecting column, the shaft diameter of the connecting column is not larger than that of the second shaft section, when the keycap is pressed down, the conductive elastic sheet is contacted with the metal sheet, the connecting column penetrates through the first through hole, and the keycap covers the outer surface of the upper cover.

As a preferred mode, a first metal buckle and a second metal buckle are arranged at two ends of the metal sheet in an extending mode, the first metal buckle and the second metal buckle are located on the same straight line, a third metal buckle and a fourth metal buckle are arranged on the conductive elastic sheet in a perpendicular mode and extend towards two ends in the direction perpendicular to the straight line direction, notches are respectively formed in positions, corresponding to the first metal buckle and the second metal buckle, of the conductive elastic sheet, a buckling groove is formed in the base, the conductive elastic sheet and the metal sheet are buckled on the base, and the first metal buckle, the second metal buckle, the third metal buckle and the fourth metal buckle are respectively and electrically connected with the PCBA board of the mechanical keyboard.

As an optimal mode, four corners of the bottom of the middle frame are respectively provided with four mounting columns protruding downwards, the base is provided with mounting holes corresponding to the mounting columns, and the mounting columns are clamped in the mounting holes.

As a preferable mode, a groove is formed at the abutting position of the second shaft section and the compression spring, and the compression spring can be clamped in the groove.

As an optimal mode, four sides of the base are respectively provided with four buckles, the upper cover is provided with a clamping groove corresponding to the buckles, the four buckles can be buckled into the clamping groove, and the upper cover is buckled with the base.

The utility model discloses a mechanical switch, the user presses mechanical switch, key shaft moves down to pushing away electrically conductive shell fragment, electrically conductive shell fragment flicks the contact sheetmetal downwards and makes the circuit switch on, the flicking process of electrically conductive shell fragment has obvious paragraph to feel and sends crisp sound, the spring that the key axle sleeve was established also brings obvious pressure sensitivity and mechanical switch along with the interactive sense that the finger removed for the user, the keyboard that uses mechanical switch simultaneously is longe-lived than membrane keyboard, the mechanical switch life-span is more than ten years or even more than twenty years, and the button is felt to change for a long time after mechanical switch live time is little, and membrane keyboard can't reach.

Drawings

Fig. 1 is an exploded view of an embodiment of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the present invention;

fig. 3 is a cross-sectional view of an embodiment of the present invention.

Reference numbers and designations in the drawings: 1. switch body 2, key shaft 21, first shaft section 22, second shaft section 221, limiting column 222, groove 23, third shaft section 3, upper cover 31, first through hole 32, clamping groove 4, compression spring 5, middle frame 51, second through hole 52, mounting column 6, conductive elastic sheet 61, third metal buckle 62, fourth metal buckle 63, notch 7, metal sheet 71, first metal buckle 72, second metal buckle 8, base 81, buckle 82, mounting hole 83, buckle groove 9, key cap 91, connecting column 92, shaft hole 10, PCBA plate

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

A mechanical switch, refer to fig. 1 to 3, comprises a switch body 1, wherein the switch body 1 comprises a square upper cover 3 and a square base 8 which are connected up and down, a middle frame 5 is connected above the base 8, a key shaft 2 is arranged in the switch body 1, the key shaft 2 is divided into a first shaft section 21, a second shaft section 22 and a third shaft section 23 from top to bottom, the shaft diameter of the first shaft section 21 and the shaft diameter of the third shaft section 23 are both smaller than the shaft diameter of the second shaft section 22, the first shaft section 21 is connected with a key cap 9, the upper cover 3 is provided with a first through hole 31 which enables the second shaft section 22 to vertically pass through, the outer surface of the lower part of the second shaft section 22 protrudes outwards to form at least two limiting columns 221, the limiting columns 221 can abut against the periphery of the first through hole 31, the third shaft section 23 is sleeved with a compression spring 4, one end of the compression spring 4 abuts against the bottom of the second shaft section 22, the other end of the compression spring 4 is pressed against the upper surface of the middle frame 5, the middle frame 5 is provided with a second through hole 51 through which the third shaft section 23 can vertically pass, the upper surface of the base 8 is provided with a metal sheet 7 corresponding to the second through hole 51, a conductive elastic sheet 6 with an upward convex middle part is arranged above the metal sheet 7, the conductive elastic sheet 6 and the metal sheet 7 are at a certain distance, the conductive elastic sheet 6 and the metal sheet 7 are respectively and electrically connected with a PCBA board 10 of the mechanical keyboard, a user presses down the key cap 9, the key shaft 2 moves downwards to the conductive elastic sheet 6 and continues to push the conductive elastic sheet 6, the conductive elastic sheet 6 downwards flicks and contacts the metal sheet 7 to conduct a circuit, the flicking process of the conductive elastic sheet 6 has obvious paragraph feeling and emits crisp sound, the compression spring 4 sleeved on the key shaft 2 also brings obvious pressure feeling for the user and interactive feeling of the mechanical switch moving along with the fingers, meanwhile, the keyboard using the mechanical switch has longer service life than a membrane keyboard, the service life of the mechanical switch is more than ten years or even more than twenty years, and the hand feeling of the keys is slightly changed after the mechanical switch is used for a long time.

In the mechanical switch of the embodiment, referring to fig. 3, based on the foregoing technical solution, it may be further specifically that the inner surface of the key cap 9 protrudes downward to form a connection column 91 that can be sleeved on the first shaft section 21, the connection column 91 is provided with a shaft hole 92 that can be matched with the first shaft section 21, a shaft diameter of the connection column 91 is not greater than a shaft diameter of the second shaft section 22, when the key cap 9 is pressed down, the conductive elastic piece 6 contacts with the metal piece 7, the connection column 91 passes through the first through hole 31, the key cap 9 covers the outer surface of the upper cover 3, and a stroke of the key shaft 2 is effectively increased in a limited space of the switch body 1.

Referring to fig. 1 and 3, based on the foregoing technical solution, it may be further specifically that a first metal buckle 71 and a second metal buckle 72 are extended from two ends of the metal sheet 7, the first metal buckle 71 and the second metal buckle 72 are located on the same straight line, the conductive elastic sheet 6 is extended from two ends of the conductive elastic sheet 6 in a direction perpendicular to the straight line, the conductive elastic sheet 6 is provided with a third metal buckle 61 and a fourth metal buckle 62 in positions corresponding to the first metal buckle 71 and the second metal buckle 72, the base 8 is provided with a buckle slot 83, the conductive elastic sheet 6 and the metal sheet 7 are both buckled to the base 8, the first metal buckle 71, the second metal buckle 72, the third metal buckle 61 and the fourth metal buckle 62 are electrically connected to the PCBA board 10 of the mechanical keyboard, and the structure ensures that the conductive elastic sheet 6 and the metal sheet 7 do not contact with each other in a normal state, meanwhile, the stable connection of the conductive elastic sheet 6 and the metal sheet 7 with the base 8 is also ensured.

Referring to fig. 1 and 3, based on the foregoing technical solution, specifically, four corners of the bottom of the middle frame 5 are respectively provided with four mounting posts 52 protruding downward, the base 8 is provided with mounting holes 82 corresponding to the mounting posts 52, and the mounting posts 52 are clamped in the mounting holes 82, so that the mechanical switch of an embodiment is stably mounted and is convenient to disassemble and assemble.

In the mechanical switch of an embodiment, referring to fig. 1 and fig. 3, based on the foregoing technical solutions, specifically, a groove 222 is further disposed at a position where the second shaft section 22 abuts against the compression spring 4, and the compression spring 4 can be clamped in the groove 222, so that a usable length of the compression spring 4 is increased, and a selection of a gram pressure is more.

Referring to fig. 1 and 3, based on the foregoing technical solution, specifically, four sides of the base 8 may be respectively provided with four fasteners 81, the upper cover 3 is provided with a slot 32 corresponding to the fastener 81, the four fasteners 81 can be fastened in the slot 32, and the upper cover 3 is fastened with the base 8.

The above is right the utility model discloses the explanation that goes on for help understands the utility model discloses, nevertheless the utility model discloses an embodiment does not receive the restriction of above-mentioned embodiment, and any does not deviate from the utility model discloses change, modification, substitution, combination, simplification made under the principle all should be equivalent replacement mode, all contain within the scope of protection of the utility model.

Claims

1. A mechanical switch is characterized by comprising a switch body, wherein the switch body comprises an upper cover and a base which are connected up and down, a middle frame is connected above the base, a key shaft is arranged in the switch body and is sequentially divided into a first shaft section, a second shaft section and a third shaft section from top to bottom, the shaft diameter of the first shaft section and the shaft diameter of the third shaft section are both smaller than that of the second shaft section, the first shaft section is connected with a key cap, the upper cover is provided with a first through hole which enables the second shaft section to vertically penetrate, the outer surface of the lower part of the second shaft section protrudes outwards to form at least two limiting columns which can be abutted against the periphery of the first through hole, a compression spring is sleeved on the third shaft section, one end of the compression spring is pressed at the bottom of the second shaft section, and the other end of the compression spring is abutted against the upper surface of the middle frame, the middle frame is provided with a second through hole which enables the third shaft section to vertically penetrate, the upper surface of the base is provided with a metal sheet corresponding to the second through hole, a conductive elastic sheet with the middle part protruding upwards is arranged above the metal sheet, the conductive elastic sheet and the metal sheet are spaced at a certain distance, and the conductive elastic sheet and the metal sheet are respectively electrically connected with a PCBA (printed Circuit Board Assembly) of the mechanical keyboard.

2. The mechanical switch according to claim 1, wherein a connecting column capable of being sleeved on the first shaft section is formed on the inner surface of the keycap in a downward protruding manner, a shaft hole capable of being matched with the first shaft section is formed in the connecting column, the shaft diameter of the connecting column is not larger than that of the second shaft section, when the keycap is pressed down, the conductive elastic sheet is in contact with the metal sheet, the connecting column penetrates through the first through hole, and the keycap covers the outer surface of the upper cover.

3. The mechanical switch according to claim 1, wherein a first metal buckle and a second metal buckle extend from two ends of the metal sheet, the first metal buckle and the second metal buckle are located on a same straight line, a third metal buckle and a fourth metal buckle extend from two ends of the conductive elastic sheet in a direction perpendicular to the straight line, notches are respectively formed in positions of the conductive elastic sheet corresponding to the first metal buckle and the second metal buckle, the base is provided with a buckle slot, the conductive elastic sheet and the metal sheet are buckled to the base, and the first metal buckle, the second metal buckle, the third metal buckle and the fourth metal buckle are respectively electrically connected with a PCBA board of the mechanical keyboard.

4. The mechanical switch according to claim 1, wherein four corners of the bottom of the middle frame are respectively provided with four mounting posts protruding downwards, the base is provided with mounting holes corresponding to the mounting posts, and the mounting posts are clamped in the mounting holes.

5. The mechanical switch according to claim 1, wherein a groove is formed at a position where the second shaft section abuts against the compression spring, and the compression spring can be clamped in the groove.

6. The mechanical switch according to claim 1, wherein four sides of the base are respectively provided with four buckles, the upper cover is provided with a slot corresponding to the buckles, the four buckles can be buckled into the slots, and the upper cover is buckled with the base.