CN220208794U - Spring piece type membrane switch - Google Patents

Abstract

The utility model relates to the technical field of membrane switches, in particular to a spring sheet type membrane switch which comprises a substrate, wherein a conductive plate is arranged in the substrate, and a switch button is arranged on the surface of the substrate. According to the utility model, the trigger rod is driven to move downwards through the limiting plate, so that the trigger rod moves downwards to the inside of the trigger sleeve rod, then a horizontal force is applied to the finger pressing the limiting plate, so that the whole trigger rod is inclined, the side wall of the trigger rod is contacted with the inner wall of the trigger sleeve rod, and then conduction between two contacts is realized.

Description

Spring piece type membrane switch

Technical Field

The utility model relates to the technical field of membrane switches, in particular to a spring sheet type membrane switch.

Background

The membrane switch is an operation system integrating key functions, indication elements and instrument panels, has the advantages of precise structure, attractive appearance, good sealing performance, long service life and the like, and is widely applied to the fields of electronic communication, electronic measuring instruments, industrial control, medical equipment, automobile industry, intelligent toys, household appliances and the like, and the membrane switch is divided into multiple types according to the structure, wherein the membrane switch comprises a metal spring sheet type membrane switch.

In use, the spring sheet type membrane switch is used for enabling the contacts at the bottom of the button to be in contact with the contacts connected with the conducting strips through pressing the switch button, so that the circuit is conducted, the purpose of the switch is achieved, the button is required to be automatically reset through the spring sheet after each pressing, and the circuit signal is disconnected.

Disclosure of Invention

The utility model aims to provide a shrapnel type membrane switch, which solves the problems that in the prior art, because the strokes of buttons are all vertical downward pressing movement, the conduction is realized, the phenomenon that contacts are contacted with each other due to false touch is caused frequently, the contact between two contacts is too frequent in a direct pressing conduction mode, the abrasion is increased due to mutual extrusion, the contact sensitivity is reduced, and long-term use is not facilitated.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a shell fragment formula membrane switch, includes the base plate, the inside of base plate is provided with the current-conducting plate, the surface of base plate is provided with shift knob, shift knob includes limiting plate and trigger lever, the holding tank has evenly been seted up on the surface of base plate, the inside of holding tank is provided with triggers the loop bar, trigger loop bar and current-conducting plate electric connection, the trigger lever sets up at the top of triggering the loop bar, the inside of holding tank is provided with the press board, the bottom of press board is provided with the spring, the one end and the holding tank fixed connection of press board are kept away from to the spring, the surface and the press board swing joint of trigger lever.

Preferably, the surface of the trigger rod is fixedly provided with a movable ball, the surface of the pressing plate is provided with a spherical hole matched with the movable ball in size, and the movable ball is movably connected with the spherical hole.

Preferably, the top of limiting plate is provided with the fly leaf, limiting groove has been seted up to the bottom of fly leaf, limiting plate passes through limiting groove swing joint in the inside of fly leaf.

Preferably, an insulating rubber sheet is fixedly arranged on the surface of the base plate relative to the position of the accommodating groove, and the movable plate and the pressing plate are positioned in the insulating rubber sheet.

Preferably, the both sides of pressing the board are all fixed mounting has the extension piece, two spouts have been seted up to the inner wall of holding tank, pressing the board and passing through extension piece and spout sliding connection, the spring is located the inside of spout.

Preferably, the bottom swing joint of trigger lever has the steel ball, the inside sliding connection of trigger sleeve pole has the separation piece, install the elastic sheet between separation piece and the trigger sleeve pole bottom.

The utility model has at least the following beneficial effects:

through the limiting plate among the push switch button, make limiting plate drive the trigger lever and move down, make the trigger lever move down to the inside of trigger loop bar, then exert a horizontal direction's force at the finger of push limiting plate, thereby make whole trigger lever take place the slope, and then make the lateral wall of trigger lever and the inner wall contact of trigger loop bar, and then realize switching on between two contacts, compared with the mode of traditional direct press, this mode still needs to increase the power of a horizontal direction and make the trigger lever slope when pressing down, consequently can avoid to a great extent because the mistake bumps the phenomenon that leads to switching on, and the contact between trigger lever and the trigger loop bar does not have the extrusion, contact between the two does not have great wearing and tearing, thereby can reduce the influence to sensitivity, be favorable to long-term use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

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

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

FIG. 3 is a schematic view of a mobile plate structure according to the present utility model;

FIG. 4 is a schematic view of a movable ball structure according to the present utility model;

fig. 5 is a schematic diagram of the structure a in fig. 3 according to the present utility model.

In the figure: 1. a substrate; 2. an insulating rubber sheet; 3. a movable plate; 4. a limiting groove; 5. pressing the plate; 6. an extension block; 7. a spherical hole; 8. a spring; 9. a chute; 10. a receiving groove; 11. triggering a loop bar; 12. a blocking sheet; 13. an elastic sheet; 14. a limiting plate; 15. a trigger lever; 16. a movable ball; 17. and (3) a steel ball.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Referring to fig. 1-5, a dome membrane switch comprises a substrate 1, a conductive plate is arranged in the substrate 1, a switch button is arranged on the surface of the substrate 1, the switch button comprises a limiting plate 14 and a trigger rod 15, a containing groove 10 is uniformly formed in the surface of the substrate 1, a trigger sleeve rod 11 is arranged in the containing groove 10, the trigger sleeve rod 11 is electrically connected with the conductive plate, the trigger rod 15 is arranged at the top of the trigger sleeve rod 11, a pressing plate 5 is arranged in the containing groove 10, a spring 8 is arranged at the bottom of the pressing plate 5, one end of the spring 8 far away from the pressing plate 5 is fixedly connected with the containing groove 10, the surface of the trigger rod 15 is movably connected with the pressing plate 5, in use, the limiting plate 14 in the switch button is pressed, the limiting plate 14 drives the trigger rod 15 to move downwards, the trigger rod 15 moves downwards to the inside of the trigger sleeve rod 11, then a horizontal force is applied to a finger pressing the limiting plate 14, therefore, the whole trigger rod 15 is inclined, the side wall of the trigger rod 15 is in contact with the inner wall of the trigger sleeve rod 11, conduction between the two contacts is achieved, compared with a traditional direct pressing mode, the horizontal force is added to enable the trigger rod 15 to incline when the trigger rod is pressed downwards, so that the phenomenon that conduction is caused by false touch can be avoided to a great extent, the contact between the trigger rod 15 and the trigger sleeve rod 11 is not extruded, the contact between the trigger rod 15 and the trigger sleeve rod 11 is not greatly abraded, the influence on sensitivity can be reduced, long-term use is facilitated, after the conduction is finished by pressing, the limiting plate 14 is directly loosened, the whole pressing plate 5 can be upwards restored under the action of the spring 8, and the whole limiting plate 14 and the trigger rod 15 are driven to move upwards synchronously to achieve reset.

Further, the movable ball 16 is fixedly arranged on the surface of the trigger rod 15, the spherical hole 7 which is matched with the size of the movable ball 16 is formed in the surface of the pressing plate 5, the movable ball 16 is movably connected with the spherical hole 7, the trigger rod 15 can be connected to the pressing plate 5 through the movable ball 16, and the trigger rod can move up and down synchronously along with the pressing plate 5, so that rebound of the trigger rod 15 can be realized by utilizing rebound of the pressing plate 5 and the spring 8.

Further, limiting groove 4 has been seted up at the top of limiting plate 14, limiting plate 14 passes through limiting groove 4 swing joint in the inside of limiting plate 3, through setting up limiting plate 3, directly press fly leaf 3 when pressing trigger lever 15, and be swing joint between limiting plate 14 and the fly leaf 3, consequently can conveniently carry out the activity to whole trigger lever 15 when pressing fly leaf 3, make trigger lever 15 take place the slope to make it conveniently to switch on with trigger sleeve 11 inner wall contact.

Further, the insulating rubber sheet 2 is fixedly installed on the surface of the base plate 1 relative to the position of the accommodating groove 10, the movable plate 3 and the pressing plate 5 are located inside the insulating rubber sheet 2, and the insulating rubber sheet 2 is arranged to seal the whole switch button.

Further, the extension block 6 is fixedly installed on both sides of the pressing plate 5, two sliding grooves 9 are formed in the inner wall of the accommodating groove 10, the pressing plate 5 is slidably connected with the sliding grooves 9 through the extension block 6, the spring 8 is located in the sliding grooves 9, the whole pressing plate 5 slides in the accommodating groove 10 through the extension block 6, rebound is conveniently achieved, and stability of the whole switch button in use is enhanced.

Further, the steel ball 17 is movably connected to the bottom of the trigger rod 15, the blocking piece 12 is slidably connected to the inside of the trigger sleeve rod 11, the elastic piece 13 is arranged between the blocking piece 12 and the bottom of the trigger sleeve rod 11, and the blocking piece 12 is arranged to enable the hand to obviously feel blocked by the contact of the steel ball 17 and the blocking piece 12 after the trigger rod 15 moves downwards, so that the pressing of the hand is stopped, the influence on the whole switch button caused by overlarge pressing force is avoided, the steel ball 17 can move between the steel ball 17 and the trigger rod 15, and therefore when the trigger rod 15 is inclined, the inclination of the trigger rod 15 can be more conveniently realized by utilizing the rolling between the steel ball 17 and the blocking piece 12.

In summary, in use, by pressing the limiting plate 14 in the switch button, the limiting plate 14 drives the trigger lever 15 to move downwards, so that the trigger lever 15 moves downwards to the inside of the trigger sleeve 11, then a horizontal force is applied to the finger pressing the limiting plate 14, so that the whole trigger lever 15 tilts, and the side wall of the trigger lever 15 contacts the inner wall of the trigger sleeve 11, so that conduction between two contacts is realized, compared with the traditional direct pressing mode, the mode also needs to increase a horizontal force to tilt the trigger lever 15 while pressing downwards, thus the conduction phenomenon caused by false touch can be avoided to a great extent, the contact between the trigger lever 15 and the trigger sleeve 11 is not extruded, and the contact between the trigger lever 15 and the trigger sleeve 11 is not greatly worn, so that the influence on sensitivity can be reduced, long-term use is facilitated, after the pressing conduction is finished, the limiting plate 14 is directly loosened, the whole pressing plate 5 is restored upwards under the action of the spring 8, so that the whole limiting plate 14 and the triggering rod 15 are driven to synchronously move upwards to realize resetting, the triggering rod 15 can be connected to the pressing plate 5 and synchronously move up and down along with the pressing plate 5 through the arrangement of the movable ball 16, the rebound of the triggering rod 15 can be realized by utilizing the rebound of the pressing plate 5 and the spring 8, the movable plate 3 is arranged, the movable plate 3 is directly pressed when the triggering rod 15 is pressed, the limiting plate 14 and the movable plate 3 are movably connected, the whole triggering rod 15 can be conveniently moved when the movable plate 3 is pressed, the triggering rod 15 is inclined, the triggering rod 15 can be conveniently contacted and conducted with the inner wall of the triggering sleeve rod 11, the whole switch button can play a sealing role through the arrangement of the insulating rubber sheet 2, the whole pressing plate 5 slides in the holding tank 10 through the extension piece 6, conveniently realize the resilience, the stability in the use of reinforcing whole shift knob through setting up separation piece 12, can utilize steel ball 17 and separation piece 12 contact after the transfer of trigger lever 15, make the hand can obviously feel the blocking to stop the pressing of hand, avoid pressing the too big influence that causes whole shift knob of strength, the steel ball 17 can with the trigger lever 15 between the activity, thereby when making the slope of trigger lever 15, can utilize the roll between steel ball 17 and the separation piece 12 to make things convenient for the slope of trigger lever 15 more.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (6)

1. The utility model provides a shell fragment formula membrane switch, includes base plate (1), its characterized in that, the inside of base plate (1) is provided with the current-conducting plate, the surface of base plate (1) is provided with shift knob, shift knob includes limiting plate (14) and trigger lever (15), holding tank (10) have evenly been seted up to the surface of base plate (1), the inside of holding tank (10) is provided with trigger loop bar (11), trigger loop bar (11) and current-conducting plate electric connection, trigger lever (15) set up at the top of trigger loop bar (11), the inside of holding tank (10) is provided with pressing plate (5), the bottom of pressing plate (5) is provided with spring (8), the one end and holding tank (10) fixed connection of pressing plate (5) are kept away from to spring (8), the surface and the pressing plate (5) swing joint of trigger lever (15).

2. The dome membrane switch according to claim 1, characterized in that a movable ball (16) is fixedly installed on the surface of the trigger rod (15), a spherical hole (7) with a size matched with that of the movable ball (16) is formed on the surface of the pressing plate (5), and the movable ball (16) is movably connected with the spherical hole (7).

3. The dome membrane switch of claim 1, wherein the top of the limiting plate (14) is provided with a movable plate (3), the bottom of the movable plate (3) is provided with a limiting groove (4), and the limiting plate (14) is movably connected inside the movable plate (3) through the limiting groove (4).

4. A dome membrane switch according to claim 3, characterized in that the surface of the base plate (1) is fixedly provided with an insulating rubber sheet (2) relative to the position of the accommodating groove (10), and the movable plate (3) and the pressing plate (5) are located inside the insulating rubber sheet (2).

5. The elastic sheet type membrane switch according to claim 1, wherein extension blocks (6) are fixedly installed on two sides of the pressing plate (5), two sliding grooves (9) are formed in the inner wall of the accommodating groove (10), the pressing plate (5) is in sliding connection with the sliding grooves (9) through the extension blocks (6), and the spring (8) is located inside the sliding grooves (9).

6. The elastic sheet type membrane switch according to claim 1, wherein a steel ball (17) is movably connected to the bottom of the trigger rod (15), a blocking sheet (12) is slidably connected to the inside of the trigger sleeve rod (11), and an elastic sheet (13) is installed between the blocking sheet (12) and the bottom of the trigger sleeve rod (11).