CN203721561U

CN203721561U - Key guiding structure

Info

Publication number: CN203721561U
Application number: CN201420030634.7U
Authority: CN
Inventors: 文荣松
Original assignee: Guiyang Yongqing Instruments and Electronic Science and Technology Co Ltd
Current assignee: Guiyang Yongqing Instruments and Electronic Science and Technology Co Ltd
Priority date: 2014-01-17
Filing date: 2014-01-17
Publication date: 2014-07-16
Anticipated expiration: 2024-01-17

Abstract

The utility model, which belongs to the technical field of the control panel key structure, discloses a key guiding structure comprising a key cap, a backlight, a movable support seat, a pedestal, a spring sheet, a contact sheet, key contacts, a spring and pins. The key guiding structure is arranged at the movable support seat and the key cap and the tolerance clearance is reduced, so that even when the pressing force is not perpendicular to the key when the key is operated, the key cap does not incline under the limit of the guiding structure. Therefore, an effect of fake operation avoidance is realized and the product quality is improved. A guiding slot and a guiding rib are respectively designed at the key cap instead of separate design of a guiding slot or a guiding rib, so that the installation direction of the pedestal can be identified conveniently, thereby avoiding wrong installation. And because of the chamfering design of the opening edge of the key cap, the installation becomes convenient.

Description

A kind of key guide structure of pressing

Technical field

The utility model belongs to control panel press-key structure technical field, relates to a kind of by key guide structure.

Background technology

In control of product button, commonly use a kind of with backlight and be designed with the button cap of frosted texture, press key lamp is bright and even, with the product of this button when mounted key-top stick after panel button works very well under backlight, so this button also has use in the product such as instrument, controller.In prior art, this button is made up of parts such as button cap, backlight, movable bearing support, base, shell fragment, contact chip, spring, stitch, when button operation, pressing keys cap makes it promote movable bearing support, promote shell fragment and contact chip and move downward, in the time that shell fragment touches a sound of base fulcrum sound " clatter ", contact chip just touches two keyboard contact points on base, button is connected, and realizes operation.Problem is, when this button operation, need contact chip to touch two contact points ability complete operations of both sides simultaneously, and be subject to structural limitations, when installation, need brute force that base is pressed into button cap and fixes button by the overhead structure of base, between base surrounding and button cap inwall, leave the gap of 0.8mm～1.2mm, so, when the pressure of operation push-button is not to be pressed in button from the vertical direction of button cap, but while baroclining button cap, shell fragment only touches the fulcrum of base one side, also can send the sound of " clatter ", contact chip touches a keyboard contact point on the base of the same side simultaneously, but button is not connected, operation is reaction not, cause " vacation " operation phenomenon, affect operating effect, even causing operator to take for button lost efficacy, thereby product quality is produced and queried.

Utility model content

In order to address the above problem, it is a kind of by key guide structure that the utility model provides, and reached good guiding and prevented the effect that " vacation " operates.

The utility model is achieved by following technical solution.

A kind of key guide structure of pressing, comprise button cap, backlight, movable bearing support, base, shell fragment, contact chip, keyboard contact point, spring and stitch, described base is fitted in button cap, fastening by its overhead structure and button cap, mounting spring in the blind hole at base center, on base, plane is established keyboard contact point, described keyboard contact point is communicated with stitch, described movable bearing support small end is sleeved in spring, on large transverse plane, backlight is installed, described backlight is connected with stitch the two poles of the earth respectively by wire, there are contact chip and shell fragment on described spring top, described contact chip one side and spring top end in contact, another side is close to shell fragment, large end one side of described button cap inwall is established guiding rib, symmetrical opposite side processing gathering sill with it.

Guiding rib and gathering sill in the corresponding button cap of the large end of described movable bearing support are established respectively groove and boss.

Fit clearance between described guiding rib and gathering sill and groove and boss is 0.02mm～0.05mm.

Described button cap mouth inward flange is processed with chamfering.

The beneficial effects of the utility model are:

One described in the utility model is pressed key guide structure, by designing by key guide structure on movable bearing support and button cap and reducing its fit clearance, even pressing force is not orthogonal to button while making operation push-button, under the restriction of guide frame, can there is not deflection in button cap yet, reach the effect of avoiding " vacation " operation, promoted product quality; Difference shaping-orientation groove and guiding rib structure instead of independent shaping-orientation groove or guiding rib on button cap, be convenient to the installation direction identification of base, to avoid mistake dress; The chamfer design at button cap mouth edge, makes easier for installation.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is B-B cross section structure schematic diagram of the present utility model;

Fig. 3 is A-A cross section structure schematic diagram of the present utility model.

In figure: 1-button cap, 101-guiding rib, 102-gathering sill, 2-backlight, 3-movable bearing support, 301-boss, 302 grooves, 4-base, 5-shell fragment, 6-contact chip, 7-keyboard contact point, 8-spring, 9-stitch.

Embodiment

Further describe the technical solution of the utility model below in conjunction with accompanying drawing, but described in claimed scope is not limited to.

As Fig. 1, Fig. 2, shown in Fig. 3, one described in the utility model is pressed key guide structure, comprise button cap 1, backlight 2, movable bearing support 3, base 4, shell fragment 5, contact chip 6, keyboard contact point 7, spring 8 and stitch 9, described base 4 is fitted in button cap 1, fastening by its overhead structure and button cap 1, mounting spring 8 in the blind hole at base 4 centers, on base 4, plane is established keyboard contact point 7, described keyboard contact point 7 is communicated with stitch 9, described movable bearing support 3 small ends are sleeved in spring 8, on large transverse plane, backlight 2 is installed, described backlight 2 is connected with stitch 9 the two poles of the earth respectively by wire, there are contact chip 6 and shell fragment 5 on described spring 8 tops, described contact chip 6 one sides contact with spring 8 tops, another side is close to shell fragment 5, large end one side of described button cap 1 inwall is established guiding rib 101, symmetrical opposite side processing gathering sill 102 with it.

Guiding rib 101 and gathering sill 102 in the corresponding button cap 1 of described movable bearing support 3 large end are established respectively groove 302 and boss 301.

Fit clearance between described guiding rib 101 and gathering sill 102 and groove 302 and boss 301 is 0.02mm～0.05mm.

1 mouthful of inward flange of described button cap is processed with chamfering, so that the installation of base 4 parts such as grade.

When button operation, press button cap 1, make it promote movable bearing support 3, boss 301 on movable bearing support 3 and groove 302 coordinate with gathering sill 102 and guiding rib 101 respectively, and motion vertically under the restriction of gathering sill 102 and guiding rib 101, promote shell fragment 5 and contact chip 6 and overcome the elastic force motion of spring 8, in the time that shell fragment 5 touches base fulcrum and sends a sound of " clatter ", contact chip 6 just touches two keyboard contact points 7 on base 4, switch connection; Unclamp button cap 1, spring 8 restores, and elastic force promotes contact chip 6, shell fragment 5 and movable bearing support 3 and moves, thereby makes button cap 1 homing, and switch disconnects, and realizes once-through operation.

The technical program has just been processed guide frame and has not been changed other structures in original product inside configuration, so this structural design is applicable to all certain intervals of need to reserving and installs in the button of inner body.

Claims

1. press key guide structure for one kind, comprise button cap (1), backlight (2), movable bearing support (3), base (4), shell fragment (5), contact chip (6), keyboard contact point (7), spring (8) and stitch (9), described base (4) is fitted in button cap (1), fastening by its overhead structure and button cap (1), mounting spring (8) in the blind hole at base (4) center, the upper plane of base (4) is established keyboard contact point (7), described keyboard contact point (7) is communicated with stitch (9), described movable bearing support (3) small end is sleeved in spring (8), on large transverse plane, backlight (2) is installed, described backlight (2) is connected with stitch (9) the two poles of the earth respectively by wire, there are contact chip (6) and shell fragment (5) on described spring (8) top, described contact chip (6) one side contacts with spring (8) top, another side is close to shell fragment (5), it is characterized in that: large end one side of described button cap (1) inwall is established guiding rib (101), symmetrical opposite side processing gathering sill (102) with it.

2. one according to claim 1 is pressed key guide structure, it is characterized in that: described movable bearing support (3) holds greatly guiding rib (101) and the gathering sill (102) in corresponding button cap (1) to establish respectively groove (302) and boss (301).

3. one according to claim 2 is pressed key guide structure, it is characterized in that: the fit clearance between described guiding rib (101) and gathering sill (102) and groove (302) and boss (301) is 0.02mm～0.05mm.

4. one according to claim 1 is pressed key guide structure, it is characterized in that: described button cap (1) mouthful inward flange is processed with chamfering.