CN220526792U - Tact switch with key cap and sheath - Google Patents

Abstract

The utility model discloses a tact switch with a key cap and a sheath. The technical scheme adopted comprises the following steps: base, first binding post, second binding post, pot young piece, end cover and button, first binding post, second binding post establish with the interval mode on the base, the pot young piece is located the inner chamber of base, and the edge with first binding post contact, the button is located pot young piece top is used for pressing it, the end cover closing cap in the up end of base, its characterized in that: the push button is characterized in that an extension rod is integrally formed at the upper end of the push button, a key cap is arranged at the top of the extension rod, a base sheath is sleeved outside the base, and an extension rod sheath sleeved on the extension rod is integrally formed at the upper end of the base sheath.

Description

Tact switch with key cap and sheath

Technical Field

The utility model relates to the field of electronic components, in particular to a tact switch.

Background

The touch switch, also called a key switch, is called a sensitive switch at the earliest time in japan, and when in use, the switch is closed and connected by pressing the switch function in the operation direction of the switch under the condition of meeting the operation force, and when the pressure is removed, the switch is opened, and the internal structure is realized by the stress change of a metal spring piece (commonly called a dome). The touch switch has the advantages of small contact resistance load, accurate operation force error, diversified specifications and the like, and is widely applied to electronic equipment, white household appliances and the like.

The structure of the conventional tact switch includes: base, first binding post, second binding post, pot young piece, end cover and button, first binding post, second binding post establish on the base with the interval mode, and the inner chamber of base is located to the pot young piece, and edge pot young piece and first binding post normal close contact, and pot young piece top is located to the button for press the operation to the pot young piece, the end cover closing cap in the up end of base. Since the volume of the tact switch is very small, the height of the button is also very small, and such a small button is not suitable for mounting on some thicker-panel electronic devices. If the height of the button is directly increased, deterioration of the switching stability and the touch feeling and breakage of the button are easily caused. Therefore, on the premise of ensuring the stability and the hand feeling of the switch, the height of the button is extended so as to ensure that the button is not easy to break, and the technical problem which needs to be solved urgently at present.

Disclosure of Invention

The utility model aims to provide a tact switch with a key cap and a sheath.

In order to solve the problems, the technical scheme adopted by the utility model comprises the following steps: base, first binding post, second binding post, pot young piece, end cover and button, first binding post, second binding post establish with the interval mode on the base, the pot young piece is located the inner chamber of base, and the edge with first binding post contact, the button is located pot young piece top is used for pressing it, the end cover closing cap in the up end of base, its characterized in that: the push button is characterized in that an extension rod is integrally formed at the upper end of the push button, a key cap is arranged at the top of the extension rod, a base sheath is sleeved outside the base, and an extension rod sheath sleeved on the extension rod is integrally formed at the upper end of the base sheath.

The tact switch with the key cap and the sheath is characterized in that: the first binding post include two first pins and two integrated into one piece in the first contact portion of first pin upper end, the second binding post include two second pins and an integrated into one piece in the second contact portion of second pin upper end, first pin, second pin are all followed the side of base draws forth, first contact portion inserts in the inner chamber both sides of base, second contact portion inserts in the inner chamber center of base, the lower extreme parcel of base sheath in first pin, second pin upper end.

The tact switch with the key cap and the sheath is characterized in that: the upper end of the first contact part is provided with a first contact, and the upper end of the second contact part is provided with a second contact.

The tact switch with the key cap and the sheath is characterized in that: the lower end of the button is provided with a positioning flange, the bottom center of the positioning flange is provided with a pressing convex point, and the pressing convex point is used for pressing the top point of the dome sheet.

The tact switch with the key cap and the sheath is characterized in that: hooks are arranged on two sides of the base, and hanging holes which are hung with the hooks are arranged on two sides of the base sheath.

The tact switch with the key cap and the sheath is characterized in that: the length of the extension rod sheath is not less than 1/3 of the length of the extension rod.

The tact switch with the key cap and the sheath is characterized in that: reinforcing walls are arranged at four corners of the base, riveting columns are arranged on the reinforcing walls, and the end covers are fixedly riveted with the riveting columns.

The tact switch with the key cap and the sheath is characterized in that: the front ends of the first binding post and the second binding post are embedded into the reinforcing wall.

The tact switch with the key cap and the sheath is characterized in that: and chamfers are arranged at the tops of the first pin and the second pin.

The tact switch with the key cap and the sheath is characterized in that: the keycap is riveted on the top of the extension rod.

The tact switch with the key cap and the sheath has the advantages that: through at button upper end integrated into one piece extension rod, then set up the key cap at the extension rod top, at the outside cover of base at the end establish the base sheath to and at the extension rod sheath of base sheath upper end integrated into one piece cover in the extension rod, can ensure switch stability and feel, can ensure again that the button is difficult for being broken.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

FIG. 1 is a schematic diagram of a tact switch of the present utility model;

FIG. 2 is a cross-sectional view of the tact switch of the present utility model;

FIG. 3 is an exploded view of the tact switch of the present utility model;

FIG. 4 is a schematic view of the structure of the base of the present utility model;

fig. 5 is a schematic structural view of a first connection terminal and a second connection terminal of the present utility model.

Detailed Description

As shown in fig. 1 to 5, the touch switch with a key cap and a sheath of the present utility model comprises a base 1, a first connecting terminal 2, a second connecting terminal 3, a dome 4, an end cover 5 and a button 6. The first connecting terminal 2 and the second connecting terminal 3 are arranged on the base 1 at intervals. The dome sheet 4 is arranged in the inner cavity 24 of the base 1, and the edge of the dome sheet 4 is in contact with the first wiring terminal 2. The button 6 is arranged above the dome sheet 4 and is used for pressing the dome sheet 4. When the button 6 is pressed, the dome 4 is simultaneously contacted with the second wiring terminal 3, so that the conduction of a circuit is realized. The end cover 5 is covered on the upper end surface of the base 1 and is used for fixing the dome 4 and the button 6, and the end cover 5 is ideally made of a metal sheet. An extension rod 7 is integrally formed at the upper end of the button 6, namely, the extension rod 7 is an extension part of the button 6. The top of the extension rod 7 is provided with a key cap 8. The outside of the base 1 is sleeved with a base sheath 9, and the upper end of the base sheath 9 is integrally formed with an extension rod sheath 10 sleeved on the extension rod 7. The base sheath 9 and the extension rod sheath 10 are desirably integrally formed as an injection molded piece.

Preferably, the first connection terminal 2 includes two first pins 11 and two first contact portions 12 integrally formed at the upper ends of the first pins 11, and the second connection terminal 3 includes two second pins 13 and one second contact portion 14 integrally formed at the upper ends of the second pins 13. Namely, the two pins are in a group, when the switch body is pressed correctly, the four pins are conducted, and meanwhile, the four pins can play a role in stably supporting the switch. The first pins 11 and the second pins 13 are led out from the side surfaces of the base 1, the first contact portions 12 are insert-molded on two sides of the inner cavity 24 of the base 1, the second contact portions 14 are insert-molded on the center of the inner cavity 24 of the base 1, and the first wiring terminal 2 and the second wiring terminal 3 are fixed in an insert-molding mode so as to ensure connection strength. The lower ends of the base sheath 9 are wrapped on the upper ends of the first pin 11 and the second pin 13, so as to protect the ends of the first pin 11 and the second pin 13 and prevent the ends from being broken.

Preferably, the upper end of the first contact portion 12 is provided with a first contact 15, and the upper end of the second contact portion 14 is provided with a second contact 16. The first contact 15 and the second contact 16 are desirably formed by integral stamping. The first contact 15 and the second contact 16 can be contacted with the dome 4 more stably, so that better electric conduction can be ensured.

Preferably, a positioning flange 17 is arranged at the lower end of the button 6, a pressing convex point 18 is arranged at the bottom center of the positioning flange 17, and the vertex of the dome sheet 4 is pressed by the pressing convex point 18. The button 6 can be stably arranged in the base 1 through the positioning flange 17, and the pressure of the dome 4 can be accurately exerted through the pressure-exerting convex points 18.

Preferably, hooks 19 are provided on two sides of the base 1, and hanging holes 20 connected with the hooks 19 are provided on two sides of the base sheath 9. To achieve a quick connection between the base sheath 9 and the base 1.

Preferably, the length of the extension rod sheath 10 is not less than 1/3 of the length of the extension rod 7, and desirably the length of the extension rod sheath 10 is 1/2 of the length of the extension rod 7. To ensure the strength of the extension rod 7 without interfering with its installation and pressing.

Preferably, reinforcing walls 25 are provided at four corners of the base 1, riveting columns 21 are provided on the reinforcing walls 25, and the end cover 5 is riveted and fixed with the riveting columns 21, so as to improve the connection strength between the base 1 and the end cover 5.

Preferably, the front ends of the first and second terminals 2, 3 are embedded in the reinforcing wall 25, so as to further improve the connection strength of the first and second terminals 2, 3.

Preferably, chamfer 22 is provided on the top of the first pin 11 and the second pin 13. Through the chamfer 22, the first pin 11 and the second pin 13 can be inserted into the welding holes on the PCB more easily, so that the assembly and the welding are convenient.

Preferably, the key cap 8 is riveted on the top of the extension rod 7, so as to facilitate assembly. Glue or other means may be used to connect the key cap 8 and the extension rod 7, as desired.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The utility model provides a take dab switch of key cap and sheath, includes base (1), first binding post (2), second binding post (3), pot young piece (4), end cover (5) and button (6), first binding post (2), second binding post (3) are established with the interval mode on base (1), pot young piece (4) are located inner chamber (24) of base (1), and the edge with first binding post (2) contact, button (6) are located pot young piece (4) top for press it, end cover (5) closing cap in the up end of base (1), its characterized in that: the push button is characterized in that an extension rod (7) is integrally formed at the upper end of the push button (6), a key cap (8) is arranged at the top of the extension rod (7), a base sheath (9) is sleeved outside the base (1), and an extension rod sheath (10) sleeved on the extension rod (7) is integrally formed at the upper end of the base sheath (9).

2. The touch switch with key cap and sheath of claim 1, wherein: the first binding post (2) include two first pins (11) and two integrated into one piece in first contact portion (12) of first pin (11) upper end, second binding post (3) include two second pins (13) and an integrated into one piece in second contact portion (14) of second pin (13) upper end, first pin (11), second pin (13) are all followed the side of base (1) is drawn forth, first contact portion (12) inserts in the inner chamber (24) both sides of base (1), second contact portion (14) inserts in inner chamber (24) center of base (1), the lower extreme parcel of base sheath (9) in first pin (11), second pin (13) upper end.

3. The touch switch with key cap and sheath of claim 2, wherein: the upper end of the first contact part (12) is provided with a first contact (15), and the upper end of the second contact part (14) is provided with a second contact (16).

4. The touch switch with key cap and sheath of claim 1, wherein: the lower end of the button (6) is provided with a positioning flange (17), the bottom center of the positioning flange (17) is provided with a pressing convex point (18), and the pressing convex point (18) is used for pressing the top point of the dome sheet (4).

5. The touch switch with key cap and sheath of claim 1, wherein: hooks (19) are arranged on two sides of the base (1), and hanging holes (20) which are connected with the hooks (19) in a hanging mode are formed in two sides of the base sheath (9).

6. The touch switch with key cap and sheath of claim 1, wherein: the length of the extension rod sheath (10) is not less than 1/3 of the length of the extension rod (7).

7. The touch switch with key cap and sheath of claim 1, wherein: reinforcing walls (25) are arranged at four corners of the base (1), riveting columns (21) are arranged on the reinforcing walls (25), and the end cover (5) is fixedly riveted with the riveting columns (21).

8. The touch switch with key cap and sheath of claim 7, wherein: the front ends of the first connecting terminal (2) and the second connecting terminal (3) are embedded into the reinforcing wall (25).

9. The touch switch with key cap and sheath of claim 2, wherein: and chamfers (22) are arranged at the tops of the first pins (11) and the second pins (13).

10. The touch switch with key cap and sheath of claim 1, wherein: the keycap (8) is riveted on the top of the extension rod (7).