CN211062627U

CN211062627U - Noiseless micro-gap switch

Info

Publication number: CN211062627U
Application number: CN202020015792.0U
Authority: CN
Inventors: 余正明; 彭建兵
Original assignee: Huizhou Zhengpai Kedian Co ltd
Current assignee: Huizhou Zhengpai Kedian Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-07-21
Anticipated expiration: 2030-01-06

Abstract

The utility model relates to a noiseless micro-gap switch, including base, the cover plate of connection on base upper portion, setting button, shell fragment, the terminal in base and cover plate enclose the closed cavity, the shell fragment is felt and is made the button return for the button provides pressing down, and the shell fragment card cover is on the terminal, and a shell fragment tip is the stiff end and fixes on the terminal, another tip is base and cover plate enclosure closed cavity in for expansion end and suspension, and the expansion end is provided with the buffering arc piece. The utility model provides a noiseless micro-gap switch, the shell fragment movable part in it is provided with buffering arc piece, and the button triggers noiselessly all quietly with the return stroke.

Description

Noiseless micro-gap switch

Technical Field

The utility model relates to a micro-gap switch field especially is about a noiseless micro-gap switch.

Background

The microswitch is a switch which has a minute contact interval and a quick action mechanism, performs a switching action by a specified stroke and a specified force, is covered by a shell, and has a driving rod outside. The working principle of the existing microswitch is as follows: the external mechanical force acts on the action reed through a transmission element (a press pin, a button, a lever, a roller and the like), and when the action reed is displaced to a critical point, instantaneous action is generated, so that a movable contact at the tail end of the action reed is quickly connected with or disconnected from a static contact. Traditional micro-gap switch, the expansion end of shell fragment need set up the contact point, and the contact point on the expansion end switches on in order to realize the circuit with terminal physical contact, and the in-process of physical contact can take place the striking, sends the impact sound, produces unnecessary sound, and sound is comparatively disturbing, awaits urgent need to improve.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a silent microswitch, in which the movable portion of the elastic sheet is provided with a buffer arc sheet, and the button triggering and the return stroke are both silent and silent.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a noiseless micro-gap switch, includes the base, connects at the cover plate on base upper portion, sets up button, shell fragment, the terminal in base and cover plate enclose the chamber, and the shell fragment provides to press down for the button and feels and make the button return, and the shell fragment card cover is on the terminal, and a shell fragment tip is the stiff end and fixes on the terminal, another tip be expansion end and suspension in base and cover plate enclose the chamber in, and the expansion end is provided with the buffering arc piece.

Preferably, the buffer arc-shaped sheet is sheet metal with an arc-shaped appearance.

Preferably, the movable end is provided with a plurality of buffer arc-shaped pieces.

Preferably, the buffer arc-shaped pieces are an upper buffer arc-shaped piece and a lower buffer arc-shaped piece respectively; the convex vertex of the upper buffering arc-shaped piece faces the cover plate, and in the process of returning the button, the convex vertex of the upper buffering arc-shaped piece is contacted with the base; the convex top point of the lower buffering arc-shaped piece faces the base, and the convex top point of the lower buffering arc-shaped piece is contacted with the base in the downward process of the button.

Preferably, the shell fragment is integrated into one piece structure, goes up buffering arc piece and shell fragment integrated into one piece, and lower buffering arc piece and shell fragment integrated into one piece.

Preferably, the number of the upper buffer arc-shaped piece and the lower buffer arc-shaped piece is one or more.

Preferably, the LED lamp also comprises an L ED luminous tube, a L ED receiving tube and a circuit board which are arranged beside the base.

The utility model discloses compare in prior art's beneficial effect and be:

the utility model discloses a noiseless micro-gap switch, shell fragment movable part in it is provided with the buffering arc piece, and upper and lower buffering arc piece be with shell fragment integrated into one piece's arc foil, have fine elasticity, can effectively cushion the striking of shell fragment and base, cover plate, can reduce the impact sound of shell fragment and base, cover plate greatly for this micro-gap switch presses down and triggers and button return stroke process enough silence.

Drawings

Fig. 1 is an exploded view of a silent microswitch in an embodiment of the present invention.

Fig. 2 is a three-dimensional structure diagram of the silent micro switch according to an embodiment of the present invention.

Fig. 3 is a three-dimensional structure diagram of the silent micro switch after the cover sheet is removed.

Fig. 4 is a cross-sectional view of a silent microswitch in an embodiment of the invention.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be described in further detail with reference to specific embodiments and drawings.

Referring to fig. 1-4, an embodiment of the present invention includes:

a silent microswitch comprises a base 1, a cover plate 2 connected to the upper part of the base 1, a button 3 arranged in a cavity enclosed by the base 1 and the cover plate 2, an elastic sheet 4, a terminal 5, an L ED light emitting tube 6 arranged beside the base 1, a L ED receiving tube 7 and a circuit board 8, wherein the elastic sheet 4 provides pressing hand feeling for the button 3 and enables the button 3 to return, the elastic sheet 4 is sleeved on the terminal 5 in a clamping way, one end part of the elastic sheet 4 is a fixed end 9 and is fixed on the terminal 5, the other end part of the elastic sheet is a movable end 10 and is suspended in the cavity enclosed by the base 1 and the cover plate 2, the movable end 10 is provided with two buffering arc sheets, the buffering arc sheets are arc-shaped sheet metal, the two buffering arc sheets are respectively an upper buffering arc sheet 11 and a lower buffering arc sheet 12, the protruding vertex of the upper buffering arc sheet 11 faces the cover plate 2, the protruding vertex of the upper buffering arc sheet 11 is in contact with the base 1 in the return process of the button 3, the protruding vertex of the lower buffering arc sheet 12 faces the base 1, the upper buffering arc sheet 12 is in an integrated structure, and the buffering arc sheet 4 is in an integrated structure.

The working principle is as follows, the button 3 is pressed by external force, the button 3 descends under the action of external force, the button 3 triggers L ED luminotron 6 in the descending process, L ED receiving tube 7 triggers the switch function, the elastic sheet 4 is extruded and deformed, the elastic sheet 4 rotates by taking the fixed end 9 as the center, the movable end 10 descends during rotation, the movable end 10 impacts the base 1 when descending to the lowest point, because the movable end 10 impacts the base 1 through the convex vertex of the lower buffering arc sheet 12, the lower buffering arc sheet 12 is an arc-shaped metal sheet integrally formed with the elastic sheet 4, the elastic sheet has good elasticity, the impact can be effectively buffered, the impact sound is greatly reduced, the microswitch is quite enough in the pressing and triggering process, after the pressing is finished, the external force is relieved, the button 3 returns under the action of the elastic force of the elastic sheet 4, meanwhile, the elastic sheet 4 rotates in the opposite direction by taking the elastic sheet 9 as the center, the movable end 10 ascends, the movable end 10 impacts the cover sheet 2 when rotating, because the movable end 10 impacts the arc-shaped metal sheet 2 through the convex vertex of the upper buffering arc sheet 11, the arc-shaped sheet is quite good, the elastic sheet has the effect of buffering and the return stroke of the elastic sheet, and the microswitch, the elastic.

In other embodiments, according to actual needs, the number of the upper buffering arc-shaped pieces 11 and the lower buffering arc-shaped pieces 12 can be one or more, and a plurality of upper buffering arc-shaped pieces and lower buffering arc-shaped pieces are arranged side by side at intervals, so that a better buffering effect can be achieved.

In the description of the present invention, it is to be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications, and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims

1. The utility model provides a noiseless micro-gap switch, includes base (1), connects cover plate (2) on base (1) upper portion, sets up button (3), shell fragment (4), terminal (5) in base (1) and cover plate (2) enclose the chamber, its characterized in that, shell fragment (4) provide for button (3) press down to feel and make button (3) return, shell fragment (4) cutting ferrule is on terminal (5), shell fragment (4) one end is stiff end (9) and fixes on terminal (5), another tip is in base (1) and cover plate (2) enclose the chamber for expansion end (10) and suspension, expansion end (10) are provided with the buffering arc piece.

2. The silent microswitch of claim 1, wherein the buffer arc piece is a sheet metal with an arc shape.

3. The silent microswitch of claim 1, wherein the movable end (10) is provided with a plurality of buffer arc shaped tabs.

4. The silent microswitch of claim 1, wherein the buffer arc-shaped pieces are an upper buffer arc-shaped piece (11) and a lower buffer arc-shaped piece (12), respectively; the convex vertex of the upper buffering arc-shaped sheet (11) faces the cover sheet (2), and in the return process of the button (3), the convex vertex of the upper buffering arc-shaped sheet (11) is contacted with the base (1); the protruding summit of lower buffering arc piece (12) is towards base (1), the descending in-process of button (3), the protruding summit of lower buffering arc piece (12) and base (1) contact.

5. The silent microswitch of claim 4, wherein the elastic sheet (4) is an integrally formed structure, the upper buffering arc-shaped sheet (11) is integrally formed with the elastic sheet (4), and the lower buffering arc-shaped sheet (12) is integrally formed with the elastic sheet (4).

6. The silent microswitch according to claim 4, wherein the number of said upper and lower buffer arc-shaped pieces (11, 12) is one or more.

7. The silent microswitch of claim 1, further comprising L ED light emitting tube (6), L ED receiving tube (7) and circuit board (8) arranged beside the base (1).