CN218274370U

CN218274370U - Elastic assembly for microswitch

Info

Publication number: CN218274370U
Application number: CN202220240082.7U
Authority: CN
Inventors: 吴福喜; 黄云
Original assignee: Dongguan Kaihua Electronics Co Ltd
Current assignee: Dongguan Kaihua Electronics Co Ltd
Priority date: 2022-01-27
Filing date: 2022-01-27
Publication date: 2023-01-10
Anticipated expiration: 2032-01-27

Abstract

The utility model discloses an elastic component for micro-gap switch, including an flexure strip, upwards support the flexure strip one hunch-up shell fragment, and downwardly extending's one switch on the contact piece. The utility model provides an elastic component for micro-gap switch can provide good and accurate elasticity restoring force of pressing for micro-gap switch, simultaneously, still plays the drive and switches on the contact piece and reciprocate in order to realize switching on and the effect of disconnection function, from this, does benefit to the accuracy that the improvement switched on and disconnection function realized.

Description

Elastic assembly for microswitch

Technical Field

The utility model relates to a micro-gap switch field especially relates to an elastic component for micro-gap switch.

Background

In current micro-gap switch, inside subassembly that switches on need set up the reed and provide elastic restoring force to realize micro-gap switch's the function of switching on and breaking off. However, the reed used in the existing microswitch is unreasonable in structural design, insufficient or excessive in elastic restoring force and poor in effect, so that the microswitch is low in accuracy of on and off actions.

SUMMERY OF THE UTILITY MODEL

Not enough to the aforesaid, the utility model aims to provide an elastic component for micro-gap switch can provide good and accurate elasticity restoring force of pressing for micro-gap switch, simultaneously, still plays to drive and switches on the contact piece and reciprocate in order to realize switching on and the effect of shutdown function, from this, does benefit to the accuracy that the improvement switched on and the shutdown function realized.

The utility model adopts the technical proposal that the purpose is achieved:

an elastic component for a microswitch is characterized by comprising an elastic sheet, an arched elastic sheet which upwards supports the elastic sheet, and a conducting contact sheet which downwards extends.

As a further improvement of the utility model, a first opening for the arch spring piece to pass through is arranged on the elastic piece, and the head end of the arch spring piece upwards supports the elastic piece.

As a further improvement of the utility model, the arched elastic sheet, the conduction contact piece and the elastic sheet are connected into a whole.

As a further improvement, the arched elastic pieces are formed by the first opening inner wall of the elastic piece being arched upwards, and the conduction contact pieces are formed by the downward extension of the first opening inner wall of the elastic piece.

As a further improvement, the arched elastic piece head end is connected with the elastic piece by two elastic strips, and the end part connected with the elastic piece through the contact piece is located between the two elastic strips.

As a further improvement of the utility model, it is as an organic whole to switch on the contact piece and be connected with the flexure strip, the shell fragment head end that arches extends to the flexure strip lower extreme to with the lower terminal surface butt of flexure strip.

As a further improvement of the utility model, it is formed by the first opening inner wall downwardly extending of flexure strip to switch on the contact piece the first opening inner wall of flexure strip is formed with two first butt pieces, it has the butt in two first butt strips of two first butt piece lower extremes to arch up the shell fragment head end, the tip that switches on the contact piece and be connected with the flexure strip is located between two first butt strips.

As a further improvement of the utility model, the hunch-up shell fragment head end extends to the flexure strip lower extreme to with the terminal surface butt under the flexure strip, switch on the contact piece and be connected as an organic wholely with the hunch-up shell fragment.

As a further improvement of the present invention, two second abutting blocks are formed on the inner wall of the first opening of the elastic sheet, and the head end of the arching elastic sheet has two second abutting strips abutting against the lower ends of the two second abutting blocks; the conducting contact piece is formed by downwards extending the head end of the arched elastic piece, and the end part of the conducting contact piece connected with the arched elastic piece is positioned between the two second abutting strips.

As a further improvement of the utility model, the lower end surface of the conducting contact piece is provided with a movable contact, and a second opening is arranged on the elastic piece.

The beneficial effects of the utility model are that: through by the flexure strip in the elastic component, the spring fragment of arching combines together with switching on the contact piece, can provide good and accurate pressing elasticity restoring force for micro-gap switch, simultaneously, still play the drive and switch on the contact piece and reciprocate in order to realize switching on and the effect of disconnection function, from this, do benefit to the improvement and switch on and the accuracy that the disconnection function realized.

The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic diagram of an elastic assembly according to an embodiment;

FIG. 2 is a schematic diagram of an internal structure of a microswitch in a sound state according to a first embodiment;

FIG. 3 is a schematic external view of a microswitch according to a first embodiment;

FIG. 4 is a schematic view of a structure in which the toggle switching element, the upper flexible portion, the lower flexible portion and the limiting spring are combined together according to an embodiment;

FIG. 5 is a schematic structural diagram of a sounding strike block according to an embodiment;

FIG. 6 is a diagram illustrating an internal structure of a first embodiment of a microswitch in a silent state;

FIG. 7 is a schematic top view of the elastic member according to the second embodiment;

FIG. 8 is a schematic bottom view of the elastic member according to the second embodiment;

FIG. 9 is a schematic top view of an elastic member according to a third embodiment;

fig. 10 is a schematic bottom structure diagram of an elastic component in the third embodiment.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined purposes, the following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and preferred embodiments.

The first embodiment is as follows:

referring to fig. 1, the present embodiment provides an elastic assembly 53 for a micro switch, which includes an elastic sheet 531, a spring piece 532 supporting the elastic sheet 531 upward, and a conductive contact piece 533 extending downward. Through combining together by the elastic sheet 531 in the elastic component 53, hunch-up shell fragment 532 and switch-on contact piece 533, can provide good and accurate pressing elasticity restoring force for micro-gap switch, simultaneously, still play to drive and switch-on contact piece 533 and reciprocate in order to realize switching on and the effect of disconnection function, from this, do benefit to the improvement and switch on and the accuracy that the disconnection function realized.

When the elastic component 53 of this embodiment is applied to the micro switch, as shown in fig. 2 and fig. 3, the micro switch includes a base 1 and a cover 2 disposed above the base 1, the cover 2 and the base 1 are combined to form a containing cavity, a guide core 4 is disposed in the containing cavity, and an upper opening 21 for the upper end of the guide core 4 to penetrate out is disposed on the cover 2, as shown in fig. 3, the guide core 4 can be pressed through the upper opening 21, in a specific product, a key cap can be disposed on the guide core 4, and the key cap can penetrate out of the upper opening 21 for pressing.

The micro-switch of this embodiment further includes a conducting mechanism 5, specifically, as shown in fig. 1 and fig. 2, the conducting mechanism 5 includes a first conducting terminal 51 and a second conducting terminal 52 respectively disposed on the base 1, and the elastic component 53 disposed in the accommodating cavity, wherein the elastic piece 531 is erected on the first conducting terminal 51 and located below the guide core 4, the conducting contact piece 533 is located above the second conducting terminal 52 and extends to a side away from the following switching type sound and noise generating mechanism 6, and a point on the conducting contact piece 533 in contact with the second conducting terminal 52 is a conducting contact point. Through combining together by the elastic sheet 531 in the elastic component 53, hunch shell fragment 532 and switch on contact piece 533, provide and press down the effect that the elasticity restoring force, still play the drive and switch on the contact point and reciprocate in order to realize switching on and breaking off the function, whole pressing process, each structure action is smooth and easy accurate, switches on and breaks off the function accuracy height.

Specifically, when the guide core 4 is not pressed, the entire elastic member 53 is in a natural state, and at this time, the conductive contact piece 533 and the second conductive terminal 52 are in a separated state, and the first conductive terminal 51 and the second conductive terminal 52 are in an off state, so that the micro switch is in an off state.

When the guide core 4 is pressed downwards, the guide core 4 acts on the elastic sheet 531 of the elastic assembly 53, the elastic sheet 531 receives a downward acting force of the guide core 4, and simultaneously receives an upward lifting acting force of the arched elastic sheet 532, the arched elastic sheet 532 receives a downward acting force of the elastic sheet 531, under the mutual acting force, the elastic sheet 531 generates downward elastic deformation, and presses the arched elastic sheet 532 downwards to enable the arched elastic sheet 532 to generate elastic deformation, meanwhile, the downward elastic deformation of the elastic sheet 531 can drive the conduction contact piece 533 to move downwards, so that the conduction contact piece 533 is contacted with the second conduction terminal 52, the first conduction terminal 51 and the second conduction terminal 52 are in a conduction state, and therefore, the microswitch is in a conduction state.

When the pressing on the guide core 4 is released, the elastic restoring force of the elastic piece 531 and the arched elastic piece 532 resets upward and drives the conducting contact piece 533 to move upward, so that the conducting contact piece 533 is separated from the second conducting terminal 52, and the first conducting terminal 51 and the second conducting terminal 52 restore to the off state again, so that the micro switch is in the off state.

As shown in fig. 2, in order to facilitate the installation of the elastic element 53, in the embodiment, the first conduction terminal 51 has a first connection portion 511 and a second connection portion 512 located above the base 1, an outer side of the first connection portion 511 is provided with a first slot 5111, and an outer side of the second connection portion 512 is provided with a second slot 5121; the elastic piece 531 is provided with a second opening 5311 through which the first connecting portion 511 passes and a first opening 5312 through which the arched elastic piece 532 passes, an inner wall of the second opening 5311 of the elastic piece 531 is clamped into the first clamping groove 5111, a tail end of the arched elastic piece 532 is clamped into the second clamping groove 5121, and a head end of the arched elastic piece 532 upwards supports the elastic piece 531. Therefore, the elastic piece 531 and the arched elastic piece 532 are integrally erected and limited on the first connecting portion 511 and the second connecting portion 512 of the first conduction terminal 51, so that when the guide core 4 is pressed, the elastic piece 531 and the arched elastic piece 532 can be elastically deformed accurately, and the accuracy of conduction and disconnection work is improved.

In this embodiment, as shown in fig. 1, the arching spring plate 532, the conducting contact plate 533 and the elastic plate 531 are integrally connected. Specifically, the arching spring plate 532 is formed by arching the inner wall of the first opening 5312 of the elastic plate 531 upwards, and the conducting contact plate 533 is formed by extending downwards the inner wall of the first opening 5312 of the elastic plate 531. Since the arching spring plate 532 is formed by arching upwards and the conducting contact plate 533 is formed by extending downwards, when the elastic plate 531 moves up and down due to elastic deformation caused by pressure, the arching spring plate 532 can elastically deform above the elastic plate 531, and the conducting contact plate 533 moves down below the elastic plate 531, so that the arching spring plate 532 and the conducting contact plate 533 are not interfered with each other and can respectively play a role.

In order to further avoid interference, the head end of the arching elastic sheet 532 is integrally connected with the elastic sheet 531 by two elastic strips 5321; the end of the conductive contact piece 533 connected to the elastic piece 531 is located between the two elastic strips 5321. Therefore, the connection end of the arched spring plate 532 and the elastic sheet 531 and the connection end of the conducting contact piece 533 and the elastic sheet 531 extend up and down separately, the structural design is reasonable, interference between the connection end and the elastic sheet 531 during movement is further avoided, and accuracy of each structural movement is improved.

In order to make the conductive contact piece 533 contact with the second conductive terminal 52 better, as shown in fig. 1 and fig. 2, in this embodiment, a movable contact 5330 is disposed on the lower end surface of the conductive contact piece 533, and an arched contact portion 520 is disposed on the second conductive terminal 52 on the upper end surface of the base 1, and the arched contact portion 520 is disposed directly below the movable contact 5330. When the conductive contact 533 moves down, the movable contact 5330 can better and more directly contact the arched contact portion 520, thereby improving the accuracy of the conduction.

The micro switch of the present embodiment further includes a switching type sound and silence mechanism 6, and specifically, as shown in fig. 2 and fig. 4 to fig. 6, the switching type sound and silence mechanism 6 includes a sound striking block 61 for striking the elastic sheet 531, a toggle switching component 62, an upper soft portion 63 connected to the toggle switching component 62, and a lower soft portion 64 connected to the toggle switching component 62 and located below the upper soft portion 63. The toggle switching assembly 62 can drive the upper soft part 63 and the lower soft part 64 to move, when the upper soft part 63 moves to the upper side of the elastic sheet 531 and the lower soft part 64 moves to the lower side of the elastic sheet 531, as shown in fig. 6, the upper soft part 63 and the lower soft part 64 are directly contacted by the up-and-down movement of the elastic sheet 531, the upper soft part 63 and the lower soft part 64 perform noise reduction, and the sounding knocking block 61 is not knocked, so that the silent pressing function is realized; when the upper soft part 63 moves to be away from the upper side of the elastic sheet 531 and the lower soft part 64 moves to be away from the lower side of the elastic sheet 531, as shown in fig. 1, the up-and-down movement of the elastic sheet 531 directly contacts the sounding striking block 61 to generate sound without contacting the upper soft part 63 and the lower soft part 64, thereby realizing the function of pressing sound. Thus, the free switching between pressing with sound and pressing without sound is realized.

In the present embodiment, the on-contact point of the on-mechanism 5 is separated from the switching type silent audible mechanism 6, that is, the on-contact point is separated from the switching type silent audible mechanism 6, so that the space design is reasonable, the mutual interference between the on-contact point and the switching type silent mechanism is avoided, and the accuracy of the on-off function and the switching type silent switching function is improved.

In the present embodiment, as shown in fig. 2, fig. 4 and fig. 6, the toggle switching assembly 62 includes a rotating mounting seat 621 rotatably disposed on the upper cover 2 or the base 1, and a toggle handle 622 connected to the rotating mounting seat 621 and extending to the outer sides of the upper cover 2 and the base 1, and correspondingly, a side opening 22 for the toggle handle 622 to penetrate out and toggle is formed on the upper cover 2 or the base 1, as shown in fig. 3. The rotating mounting base 621 is respectively provided with an upper connecting arm 6211 and a lower connecting arm 6212 located below the upper connecting arm 6211, the upper flexible portion 63 is disposed at the lower end of the upper connecting arm 6211, and the lower flexible portion 64 is disposed at the upper end of the lower connecting arm 6212. Specifically, the rotating mounting seat 621 of the present embodiment is rotatably disposed on the base 1, but may also be rotatably disposed on the upper cover 2. By dialing the dial 622, the rotation mounting seat 621 rotates along with the dial 622, so as to drive the upper soft portion 63 and the lower soft portion 64 to rotate, thereby realizing the switching between the approach of the upper soft portion 63 and the separation of the lower soft portion 64 from the elastic sheet 531, and realizing the free switching function between the sound pressing and the soundless pressing.

In the present embodiment, the upper soft portion 63 and the lower soft portion 64 have soft, flexible and elastic characteristics, so that when the elastic sheet 531 acts on the upper soft portion 63 and the lower soft portion 64, the purpose of noise reduction is achieved, and a silent effect is achieved. The upper soft portion 63 and the lower soft portion 64 can be made of silicone.

In order to generate the toggle hand feeling, in this embodiment, a limiting elastic sheet 65 located on one side of the lower portion of the rotating installation seat 621 is disposed on the base 1, a limiting protrusion 651 is convexly disposed on one side of the limiting elastic sheet 65 close to the rotating installation seat 621, and two limiting grooves 6213 matched with the limiting protrusion 651 are formed on one side of the lower portion of the rotating installation seat 621. Stirring and dialling handle 622, when driving and rotating mount pad 621 and rotate, rotating the mount pad 621 outside and acting on spacing arch 651 of spacing shell fragment 65, because elastic deformation can take place for spacing arch 651 for rotate the mount pad 621 outside and can take place the interact with spacing arch 651, thereby produce and stir and feel. Meanwhile, after the button is pushed to the right position, the limiting bulge 651 is clamped into the limiting groove 6213 to achieve the effects of limiting and positioning and preventing shaking, and therefore the accuracy of switching between sound pressing and soundless switching is improved.

In the specific installation, as shown in fig. 6, in this embodiment, an installation groove 11 for installing the lower portion of the rotating installation seat 621 is formed on the base 1, a limiting clamping groove 12 for embedding the limiting elastic sheet 65 is formed on one side of the installation groove 11, a central rotating shaft 13 is disposed on the installation groove 11, and the rotating installation seat 621 is rotatably sleeved on the central rotating shaft 13. By the combination of the mounting groove 11, the limiting clamping groove 12 and the central rotating shaft 13, the rotating mounting seat 621 and the limiting elastic sheet 65 can be stably mounted on the base 1, and the effect of the rotating mounting seat is accurately exerted.

In the present embodiment, as shown in fig. 2 and fig. 5, a side limiting opening 611 is formed on the sounding striking block 61, an upper striking sounding part 612 is formed at the upper end of the side limiting opening 611, and a lower striking sounding part 613 is formed at the lower end of the side limiting opening 611; one end of the elastic piece 531 passes through the side limiting opening 611, the upper tapping sound-emitting portion 612 is located above one end of the elastic piece 531, and the lower tapping sound-emitting portion 613 is located below one end of the elastic piece 531. Meanwhile, as shown in fig. 2 and 5, the sounding strike block 61 is disposed on the base 1 through a connection terminal 610.

When the elastic piece 531 moves up and down, the upper tap sound emitting unit 612 and the lower tap sound emitting unit 613 are directly tapped to emit sound.

In order to switch between the pressing sound and the soundless sound, as shown in fig. 5 and 6, the distance between the upper tapping sound-emitting portion 612 and the lower tapping sound-emitting portion 613 is greater than the distance between the upper soft portion 63 and the lower soft portion 64. Thus, when the upper soft portion 63 and the lower soft portion 64 rotate to the upper and lower sides of the elastic piece 531, the vertical movement of the elastic piece 531 directly acts on the upper soft portion 63 and the lower soft portion 64 without contacting the upper click sound emitting portion 612 and the lower click sound emitting portion 613, thereby realizing the pressing silent function.

Example two:

the main difference between this embodiment and the first embodiment is that the structure of the elastic component is different. In the present embodiment, as shown in fig. 7 and 8, the conducting contact 533 of the elastic component 53' is integrally connected to the elastic piece 531, and the head end of the arching spring piece 532 extends to the lower end of the elastic piece 531 and abuts against the lower end surface of the elastic piece 531, so that the arching spring piece 532 is limited between the second connection portion 512 of the first conducting terminal 51 and the elastic piece 531.

Specifically, the conducting contact piece 533 is formed by extending downward an inner wall of the first opening 5312 of the elastic piece 531, two first abutting blocks 5313 are formed on the inner wall of the first opening 5312 of the elastic piece 531, the head end of the arching elastic piece 532 has two first abutting strips 5322 abutting against the lower ends of the two first abutting blocks 5313, and the end of the conducting contact piece 533 connected with the elastic piece 531 is located between the two first abutting strips 5322.

Since the arching spring plate 532 is formed by arching upwards and the conducting contact plate 533 is formed by extending downwards, when the elastic plate 531 moves up and down due to elastic deformation caused by pressure, the arching spring plate 532 can elastically deform above the elastic plate 531, and the conducting contact plate 533 moves down below the elastic plate 531, so that the arching spring plate 532 and the conducting contact plate 533 are not interfered with each other and can respectively play a role. Meanwhile, the abutting ends of the arched spring plate 532 and the elastic plate 531 and the connecting ends of the conducting contact plates 533 and the elastic plate 531 extend up and down separately, the structural design is reasonable, interference between the arched spring plate and the elastic plate is further avoided when the arched spring plate and the elastic plate 531 act, and therefore accuracy of all structural actions is improved.

Example three:

the main difference between this embodiment and the first or second embodiment is that the structure of the elastic component is different. In the present embodiment, as shown in fig. 9 and 10, the head end of the arching spring piece 532 in the elastic component 53 ″ extends to the lower end of the elastic piece 531, and abuts against the lower end surface of the elastic piece 531, and the conductive contact piece 533 and the arching spring piece 532 are integrally connected, so that the arching spring piece 532 is limited between the second connection portion 512 of the first conductive terminal 51 and the elastic piece 531.

Specifically, two second abutting blocks 5314 are formed on the inner wall of the first opening 5312 of the elastic piece 531, and two second abutting strips 5323 abutting against the lower ends of the two second abutting blocks 5314 are arranged at the head end of the arched elastic piece 532; the conducting contact piece 533 is formed by extending the head end of the arching elastic piece 532 downward, and the end of the conducting contact piece 533 connected with the arching elastic piece 532 is located between the two second contact strips 5323.

Since the arching spring plate 532 is formed by arching upwards and the conducting contact plate 533 is formed by extending downwards, when the elastic plate 531 moves up and down due to elastic deformation caused by pressure, the arching spring plate 532 can elastically deform above the elastic plate 531, and the conducting contact plate 533 moves down below the arching spring plate 532, so that the arching spring plate 532 and the conducting contact plate 533 do not interfere with each other and play roles respectively. Meanwhile, the abutting ends of the arching elastic sheet 532 and the elastic sheet 531, and the connecting ends of the conducting contact sheet 533 and the arching elastic sheet 532 extend separately, so that the structural design is reasonable, interference caused by mutual actions is further avoided, and the accuracy of each structural action is improved.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. An elastic component for a microswitch is characterized by comprising an elastic sheet, an arched elastic sheet which upwards supports the elastic sheet, and a conducting contact sheet which downwards extends; the elastic sheet is provided with a first opening for the arched elastic sheet to pass through, and the head end of the arched elastic sheet upwards supports the elastic sheet; the arched elastic sheet, the conducting contact sheet and the elastic sheet are connected into a whole; the arched elastic sheet is formed by upwards arching the inner wall of the first opening of the elastic sheet, and the conducting contact sheet is formed by downwards extending the inner wall of the first opening of the elastic sheet; the head end of the arched elastic sheet is integrally connected with the elastic sheet through two elastic strips, and the end part of the conduction contact sheet connected with the elastic sheet is positioned between the two elastic strips.

2. The elastic assembly for the micro-switch according to claim 1, wherein the conducting contact piece is integrally connected with the elastic piece, and the head end of the arched elastic piece extends to the lower end of the elastic piece and abuts against the lower end face of the elastic piece.

3. The elastic assembly for the micro-switch according to claim 2, wherein the conducting contact piece is formed by extending downward the inner wall of the first opening of the elastic piece, two first abutting blocks are formed on the inner wall of the first opening of the elastic piece, the head end of the arching elastic piece is provided with two first abutting strips abutting against the lower ends of the two first abutting blocks, and the end of the conducting contact piece connected with the elastic piece is located between the two first abutting strips.

4. The elastic assembly for the micro-switch according to claim 1, wherein the head end of the arching elastic sheet extends to the lower end of the elastic sheet and abuts against the lower end face of the elastic sheet, and the conducting contact piece is integrally connected with the arching elastic sheet.

5. The elastic assembly for the micro-switch according to claim 4, wherein two second abutting blocks are formed on the inner wall of the first opening of the elastic sheet, and the head end of the arched elastic sheet is provided with two second abutting strips abutting against the lower ends of the two second abutting blocks; the conducting contact piece is formed by downwards extending the head end of the arched elastic piece, and the end part of the conducting contact piece connected with the arched elastic piece is positioned between the two second abutting strips.

6. The elastic assembly for a microswitch as in claim 1, wherein a movable contact is disposed on a lower end surface of the conducting contact piece, and a second opening is opened on the elastic piece.