CN204215932U - There is the thin type key switch of elastic film - Google Patents

Abstract

The utility model provides a thin key switch with an elastic film, which comprises: a rubber cover, which has a pressing part; a base, which is fastened to the rubber cover; a movable terminal, which has a first contact part, the The first contact part is located below the pressing part; a static terminal has a second contact part located below the first contact part; an elastic film is arranged on the rubber surface, and the elastic film covers the pressing part part, press the elastic film, the elastic film squeezes the pressing part to move downward, the pressing part drives the first contact part to move downward, and the first contact part abuts against the second contact part, thereby realizing the connection between the movable terminal and the static terminal. The electrical conduction, the elastic film is loosened, the moving terminal and the static terminal are separated, the design of the product is thin, and the contact method is purely mechanical, which increases the reliability of the product, and also increases the user's hand feel and operation. It is convenient, fast and practical, saves cost and prolongs the service life of the product.

Description

Thin key switch with elastic membrane

technical field

The utility model relates to a thin key switch with an elastic film.

Background technique

In view of the fact that there is no mechanical key switch on the current notebook computer or related similar products, and the requirement of the notebook computer on the key switch itself is very thin, the inventor invented a kind of device that can be applied to the notebook computer or related similar products. Thin key switch with elastic film.

Utility model content

The purpose of the utility model is to overcome the defects of the prior art and provide a thin key switch with an elastic film, which has the characteristics of good hand feeling and strong practicability.

The utility model is achieved in the following way: a thin key switch with an elastic film, which comprises:

A rubber cover, which has a rubber surface, and a pressing part extends inwardly from the rubber surface;

A base, fastened to the rubber cover, a groove is recessed downward on the upper surface of the base, two protrusions are arranged in the groove, and a boss is also arranged on the base;

A movable terminal (elastic piece), which has a first connection part installed on the boss, the first connection part extends backward to a first welding part, and the first connection part extends forward to a first contact part, the first contact part is located below the pressing part, and the left and right sides of the first contact part respectively extend a first overlapping part, and the first overlapping part abuts against the protrusion;

A static terminal, embedded in the base and set opposite to the movable terminal (shrapnel), the static terminal has a second connection part, and the second connection part extends backward to a second welding part, so The second connecting portion extends forward to a second contact portion, and the second contact portion is located between the two protrusions and below the first contact portion;

An elastic film is arranged on the rubber surface, and the elastic film covers the pressing part.

Further, a first contact protrudes from the bottom of the first connecting part, and a second contact protrudes from the upper surface of the second contact part, and the second contact is located on the first contact. Directly below.

Further, the upper surface of the boss is concavely provided with a card slot downward, and a card post is protruded from the card slot, and a first card hole is opened in the first connecting part, and the first connecting part is installed It is arranged in the card slot, and the card column is locked in the first card hole.

Further, the first welding part and the second welding part are arranged horizontally or vertically.

Further, an opening is formed downwards on the upper surface of the rubber surface, and the pressing part is formed by extending forward from the rear end of the rubber surface, and both the opening and the pressing part are circular.

Furthermore, a convex rib is arranged on the inner wall surface of the opening, and the elastic film is sleeved on the convex rib.

Further, a contact point is provided on the inner side of the top of the elastic film, and the contact point is located directly above the pressing part.

The first contact part of the movable terminal (elastic piece) of the utility model is located below the pressing part, and the left and right sides of the first contact part respectively extend a first overlapping part, and the first overlapping part abuts against the The protruding post, the static terminal has a second contact part, the second contact part is located between the two protruding posts, and under the first contact part, the elastic film is pressed, and the elastic film presses the pressing part moves downward, the pressing part drives the first contact part to move downward, and the first contact part abuts against the second contact part, thereby realizing the electrical connection between the movable terminal (elastic piece) and the static terminal, Loosen the elastic film, the movable terminal (elastic piece) and the static terminal are separated, the pressing part, the movable terminal (elastic piece), and the static terminal are all designed to be thinner, thereby realizing the thinner product, and the contact method is purely mechanical Contact increases the reliability of the product, is convenient, fast, practical, easy to operate, and also greatly saves the cost of the product and prolongs the service life of the product.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is the three-dimensional assembly diagram that the utility model provides;

Fig. 2 is the three-dimensional exploded view that the utility model provides;

Figure 3 is a three-dimensional exploded view of the rubber cover, the base, the movable terminal (shrapnel), and the static terminal provided by the utility model;

Fig. 4 is a sectional view of the dynamic and static terminals provided by the utility model.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figures 1 to 4, the utility model provides a thin key switch with an elastic film, which includes: a rubber cover 1, a base 2, a movable terminal (elastic piece) 3, a static terminal 4, and an elastic film 5.

A rubber cover 1, which has a rubber surface 11, the rubber surface 11 extends inwards a pressing portion 12, the rubber surface 11 is made of plastic material, the rubber cover 1 is in the form of a sheet, the rubber surface 11 It is also in the shape of a sheet, and an opening 14 is formed downwards on the upper surface of the rubber surface 11, and the pressing part 12 is formed by extending forward from the rear end of the rubber surface 11, and the opening 14 and the The pressing parts 12 are all round, and the periphery of the pressing parts 12 and the rubber surface 11 are disconnected, and only the parts of the pressing parts 12 and the rubber surface 11 are connected, so that the pressing parts 12 can move downward and upward under the action of external force Float, that is, rely on its own elasticity to return to the original position.

A base 2, fastened to the rubber cover 1, a groove 21 is recessed downward on the upper surface of the base 2, the groove 21 is square, and two protrusions 22 are arranged in the groove 21 , the two bosses 22 are respectively located on the left and right sides of the groove 21, and the base 2 is also provided with a boss 23, the boss 23 is located at the rear end of the base 2, and the upper surface of the boss 23 is concave downward A card slot 23 is provided, and a card post 24 protrudes from the card slot 23 .

A movable terminal (elastic piece) 3, which has a first connecting portion 31 installed on the boss 23, the first connecting portion 31 extends backward a first welding portion 33, the first welding portion 33 is Set horizontally or vertically, the first connecting portion 31 extends forward to a first contact portion 32, a first locking hole 35 is opened in the first connecting portion 31, and the first connecting portion 31 is installed on The card slot 23 and the card post 24 are engaged with the first card hole 35 to increase the stability of the movable terminal (elastic piece) 3 in the card slot 23 and prevent the movable terminal (elastic piece) 3 from moving back and forth and left and right. The first contact part 32 is located below the pressing part 12, so that the pressing part 12 directly drives the first contact part 32 to move downward, and a first contact 36 protrudes below the first connecting part 31 , the first contact 36 is used to contact the static terminal 4, the left and right sides of the first contact portion 32 respectively extend a first overlapping portion 34, and the first overlapping portion 34 abuts against the protrusion 22 , the two first overlapping parts 34 are respectively overlapped on the two bosses 22, and the bosses 22 can provide an upward force for the first overlapping parts 34, so as to ensure that the first contact part 32 bounces up and recovers. To the initial position, increase the reliability of contact, and also ensure that the product can be used more than tens of thousands of times.

A static terminal 4 is embedded in the base 2 and opposite to the movable terminal (shrapnel) 3. The static terminal 4 has a second connecting portion 41 extending backward for a The second welding part 44, the second welding part 44 is arranged horizontally or vertically, the second connecting part 41 extends forward a second contact part 42, and the second contact part 42 is located between the two Between the protrusions 22, and below the first contact portion 32, a second contact 43 protrudes from the upper surface of the second contact portion 42, and the second contact 43 is located on the first contact. Directly below the point 36, it is convenient for the first contact 36 to move downward to abut against the second contact 43 to prevent poor contact.

The surface of the inner wall of the opening 14 is provided with a convex rib 13 on the upper surface, and an elastic film 5 is sleeved on the convex rib 13, and the elastic film 5 is sleeved on the convex rib 13, which can prevent the entry of dust and can also increase According to the user's touch, the elastic film 5 is directly pressed down, and the elastic film 5 can drive the pressing part 12 to move downward.

When in use, press the elastic film 5, the elastic film 5 squeezes the pressing part 12 to move downward, the pressing part 12 drives the first contact part 32 to move downward, and the first contact part 32 drives the first contact 36 to move downward, At the same time, the overlapping portion 34 abuts against the boss 22 to prevent the first contact portion 32 from moving downward excessively and causing elastic fatigue, and the first contact 36 moves downward and abuts against the second contact 43, so that the first contact 36 The point 36 is electrically connected with the second contact 43, thereby realizing the electrical connection between the movable terminal (shrapnel) 3 and the static terminal 4, the elastic film 5 is released, and the movable terminal (shrapnel) 3 and the static terminal 4 are separated , the pressing part 12, the movable terminal (shrapnel) 3, and the static terminal 4 are all designed to be thinner, thereby realizing the thinner product, the contact method is purely mechanical contact, which increases the reliability of the product, and adopts elastic film The design of 5 greatly increases the stability of the contact, and at the same time increases the user's hand feeling, avoids friction on the contact of the product surface, prolongs the service life of the product, and reduces the cost of the product.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in the Within the protection scope of the present utility model.

Claims (7)

1. A thin key switch with elastic film, characterized in that, comprising: A rubber cover, which has a rubber surface, and a pressing part extends inwardly from the rubber surface; A base, fastened to the rubber cover, a groove is recessed downward on the upper surface of the base, two protrusions are arranged in the groove, and a boss is also arranged on the base; A movable terminal, which has a first connection part installed on the boss, the first connection part extends backwards to a first welding part, and the first connection part extends forwards to a first contact part, so The first contact part is located below the pressing part, and the left and right sides of the first contact part respectively extend a first overlapping part, and the first overlapping part abuts against the protrusion; A static terminal, embedded in the base and set opposite to the movable terminal, the static terminal has a second connection portion, the second connection portion extends backwards to a second welding portion, the second The connecting portion extends forward to a second contact portion, the second contact portion is located between the two protrusions and below the first contact portion; An elastic film is arranged on the rubber surface, and the elastic film covers the pressing part. 2. The thin key switch with elastic film according to claim 1, characterized in that: a first contact is protruded below the first connecting part, and a first contact is protruded on the upper surface of the second contact part. Two contacts, the second contact is located directly below the first contact. 3. The thin key switch with an elastic film as claimed in claim 1, characterized in that: the upper surface of the boss is concavely provided with a card slot downward, and a card post is protruded in the card slot, and the first A connecting portion defines a first locking hole, the first connecting portion is installed in the locking slot, and the locking post is engaged in the first locking hole. 4. The thin key switch with an elastic membrane according to claim 1, wherein the first welding portion and the second welding portion are arranged horizontally or vertically. 5. The thin key switch with an elastic film as claimed in claim 1, wherein an opening is formed downwards on the upper surface of the rubber surface, and the pressing part is forward from the rear end of the rubber surface. It is formed by extension, and both the opening and the pressing part are circular. 6 . The thin key switch with an elastic film as claimed in claim 5 , wherein a raised rib is formed on the inner wall of the opening, and the elastic film is sleeved on the raised rib. 7 . 7 . The thin key switch with an elastic film as claimed in claim 1 , wherein a contact point is provided on the inner side of the top of the elastic film, and the contact point is located directly above the pressing portion. 8 .