CN217386949U

CN217386949U - Prepressing type long-life key switch

Info

Publication number: CN217386949U
Application number: CN202221383374.2U
Authority: CN
Inventors: 李新超; 马少飞; 魏建家; 马少龙; 赖海宽; 任宗利
Original assignee: Honyone Electrical Appliance Co ltd
Current assignee: Honyone Electrical Appliance Co ltd
Priority date: 2022-06-02
Filing date: 2022-06-02
Publication date: 2022-09-06
Anticipated expiration: 2032-06-02

Abstract

The utility model discloses a pre-compaction formula high life key switch, including casing, terminal subassembly and break-make subassembly, the terminal subassembly is connected with the casing, and the break-make subassembly includes break-make piece, pressing part and elastic component, break-make piece and terminal subassembly separable connection, and the break-make piece is located one side of terminal subassembly, and the pressing part is connected with the casing to drive break-make piece is close to or keeps away from the terminal subassembly, and the one end and the break-make piece of elastic component are connected. This application exerts the pre-pressure to the break-make piece through setting up the elastic component for exert less pressure to the pressing part and just enable the terminal subassembly to switch on, and under the effect that the break-make piece continuously received pressure, can ensure when the pressure that the break-make piece received slightly changes, the break-make piece can not appear rocking, thereby ensure the stability of contact, and can cushion the pressure that the break-make piece received through the elastic component, thereby avoided the pressure that receives too big, lead to break-make piece and terminal impaired, the condition that influences its life takes place.

Description

Pre-pressing type long-life key switch

Technical Field

The utility model relates to a key switch field specifically, mainly relates to a pre-compaction formula high life key switch.

Background

The key switch is mainly a light touch key switch, belongs to the class of electronic components, and is characterized in that when the key switch is used, inward pressure is applied to a key of the key switch, so that an internal switch of the key switch is closed, a circuit is conducted, when the pressure disappears, the key switch is disconnected, and the internal structure of the key switch is switched on and off by means of the deformation of a metal elastic sheet under stress.

When traditional key switch was used, because button and metal shrapnel are hard contact for when receiving pressure less, metal shrapnel can't be closed internal switch or terminal and metal shrapnel contact unstable, influenced closed efficiency, and when the pressure that receives was too big, then can appear the button and metal shrapnel and terminal between pressure too big, influence its working life's the condition emergence.

SUMMERY OF THE UTILITY MODEL

To the deficiency of the prior art, the utility model provides a prepressing type long-life key switch.

The utility model discloses a prepressing type long-life key switch, include

A housing;

a terminal assembly connected with the housing; and

the on-off assembly comprises an on-off piece, a pressing piece and an elastic piece, the on-off piece is detachably connected with the terminal assembly, the on-off piece is located on one side of the terminal assembly, the pressing piece is connected with the shell and drives the on-off piece to be close to or far away from the terminal assembly, one end of the elastic piece is connected with the on-off piece, and the other end of the elastic piece is connected with the pressing piece and continuously applies force to the on-off piece.

According to the utility model discloses an embodiment, the quantity of terminal subassembly is two at least, and is a plurality of the terminal subassembly simultaneously with break-make piece separable connection.

According to the utility model discloses an embodiment, the terminal subassembly includes first terminal and second terminal, first terminal is connected with the casing, the second terminal is connected with the casing.

According to the utility model discloses an embodiment, the break-make subassembly still includes the connecting piece, connecting piece one end with the pressing part is connected, and is located the pressing part is close to one side of break-make, the connecting piece with the elastic component is connected.

According to an embodiment of the present invention, the connecting member has a circumferential side connected to an end of the elastic member adjacent to the pressing member.

According to an embodiment of the present invention, it further comprises

The limiting assembly comprises a limiting groove, the limiting groove is formed in the shell, and the limiting groove is aligned to the pressing piece in a guiding mode.

According to the utility model discloses an embodiment, spacing subassembly still includes the locating part, the locating part with the pressing part is connected, just the locating part is located the pressing part is close to the one end of break-make piece, the one end of locating part extends to the spacing inslot, and right the pressing part is spacing.

According to an embodiment of the present invention, the on-off member is a snap piece.

According to the utility model discloses an embodiment, the one end of break-make with the one end contact of first terminal.

According to the utility model discloses an embodiment, the elastic component with the position that the break-make piece is connected is located the middle part of break-make piece.

The beneficial effect of this application lies in: the elastic piece is arranged to apply pre-pressure to the on-off piece, so that the terminal assembly can be conducted by applying smaller pressure to the pressing piece, the on-off piece can be guaranteed not to shake when slight change occurs to the pressure applied to the on-off piece under the action of the pressure continuously applied to the on-off piece, the contact stability is guaranteed, the pressure applied to the on-off piece can be buffered through the elastic piece, the situation that the on-off piece and the terminal are damaged due to overlarge pressure is avoided, and the service life of the terminal assembly is influenced is avoided.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a pre-stressed long-life key switch in an embodiment;

FIG. 2 is another schematic structural diagram of the pre-press type long-life key switch in the embodiment;

FIG. 3 is a schematic structural diagram of the make-break assembly in the embodiment;

fig. 4 is an enlarged schematic view of a structure in fig. 1.

In the attached drawings, 1-a shell, 2-a terminal assembly, 3-an on-off assembly and 4-a limiting assembly;

21-a first terminal, 22-a second terminal;

31-on-off, 32-pressing, 33-elastic, 34-connecting;

41-limit groove, 42-limit piece.

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, for the purpose of simplifying the drawings, certain well-known and conventional structures and components are shown in the drawings in a simplified schematic manner.

It should be noted that all the directional indicators in the embodiments of the present invention, such as upper, lower, left, right, front and rear … …, are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are used for descriptive purposes only, not for specifically referring to the order or sequence, and not for limiting the present invention, but for distinguishing between elements or operations described in the same technical terms, and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

For further understanding of the contents, features and functions of the present invention, the following embodiments will be illustrated in detail with reference to the accompanying drawings:

referring to fig. 1 to 3, fig. 1 is a schematic structural diagram of a pre-press type long-life key switch in an embodiment, fig. 2 is another schematic structural diagram of the pre-press type long-life key switch in the embodiment, and fig. 3 is a schematic structural diagram of a switching element in the embodiment. The pre-pressing type long-life key switch in the embodiment comprises a shell 1, a terminal assembly 2 and an on-off assembly 3, wherein the terminal assembly 2 is connected with the shell 1, one end of the terminal assembly 2 is positioned outside the shell 1, the other end of the terminal assembly 2 extends into the inner cavity of the shell 1, the on-off assembly 3 comprises an on-off piece 31, a pressing piece 32 and an elastic piece 33, the on-off piece 31 is detachably connected with the terminal assembly 2, the on-off piece 31 is made of conductive materials, the on-off piece 31 is positioned on one side of the terminal assembly 2, the on-off piece 31 is separated from the terminal assembly 2 in a normal state, when the on-off piece 31 is contacted with the terminal assembly 2 under the action of external force, the circuit is normally conducted under the action that the terminal assembly 2 is conducted by the on-off piece 31, the circuit is disconnected after the on-off piece 31 is separated, the conduction and the disconnection of the circuit are completed, the pressing piece 32 is connected with the shell 1, and drives the on-off member 31 to approach or depart from the terminal assembly 2, so that the pressing member 32 can be moved towards the terminal assembly 2 by pressing the pressing member 32, thereby applying pressure to the on-off member 31, one end of the elastic member 33 is connected with the on-off member 31, and the other end of the elastic member 33 is connected with the pressing member 32, so that when the pressing member 32 is pressed, the pressure of the pressing member 32 can be buffered by the elastic member 33, thereby the pressure applied to the on-off member 31 is relatively gentle, further, when the pressure applied to the pressing member 32 is slightly changed, the contact between the on-off member 31 and the terminal assembly 2 can be kept in a relatively stable state by the elastic force of the elastic member 33, and when the pressing member 32 is applied with a large pressure, the elastic member 33 can be compressed, thereby the violent collision between the on-off member 31 and the terminal assembly 2 can not occur, and the service life of the key switch can be further ensured, the elastic member 33 continuously applies a force to the switching member 31 so that the elastic member 33 can continuously apply a pressure to the switching member 31 in the direction of the terminal assembly 2 in a normal state, so that the circuit can be conducted with only a small pressure, and the switching member 31 can be held in a fixed position by the pressure in the normal state.

Preferably, the number of the terminal assemblies 2 is at least two, and the plurality of terminal assemblies 2 are detachably connected to the opening/closing member 31 at the same time, so that when the opening/closing member 31 is in contact with the terminal assemblies 2, the circuit can be conducted by the simultaneous contact of the plurality of terminal assemblies 2, and after the pressing member 32 moves in a reverse direction for a certain distance, the circuit can be disconnected by the separation of the opening/closing member 31 from at least one of the terminal assemblies 2.

Preferably, the switching member 31 is a snap piece, so that when the switching member 31 is pressed, it can be turned into a concave state through the convex middle portion of the switching member 31 to contact the terminal assembly 2 to conduct a circuit, and when the pressure applied to the switching member 31 is removed, it can be separated from the terminal assembly 2 by its own deformation to break the circuit.

Preferably, the position where the elastic member 33 is connected to the on-off member 31 is located in the middle of the on-off member 31, so that the pressure on the on-off member 31 is located in the middle, thereby ensuring the deformation of the on-off member 31 when the periphery of the on-off member 31 is in a fixed state, further ensuring that the on-off member 31 deforms with only small pressure, and further ensuring that the circuit is switched on.

Referring to fig. 1 to 3 again, the terminal assembly 2 includes a first terminal 21 and a second terminal 22, the first terminal 21 is connected to the housing 1, and the second terminal 22 is connected to the housing 1, so that when the on-off member 31 is in contact with both the first terminal 21 and the second terminal 22, the circuit is conducted, and when the on-off member is separated from one of the terminals, the circuit is disconnected.

Preferably, one end of the switching element 31 is in contact with one end of the first terminal 21, so that in a normal state, one end of the switching element 31 is always in a contact state with the first terminal 21, and further, after the switching element 31 is deformed, the circuit can be conducted only by being in contact with the second terminal 22, and therefore the conduction efficiency of the circuit is guaranteed.

Referring to fig. 1 to 3 again, the on-off assembly 3 further includes a connecting member 34, one end of the connecting member 34 is connected to the pressing member 32, and is located on one side of the pressing member 32 close to the on-off member 31, the connecting member 34 is connected to the elastic member 33, so that when the pressing member 32 is pressed, the elastic member 33 can be pressed by the connecting member 34, and further the on-off member 31 is deformed, so that the pressure when the switch is started can be adjusted by adjusting the length of the connecting member 34, and therefore the on-off efficiency of the key switch can be ensured by setting the connecting member 34 with a corresponding length according to requirements.

Preferably, the circumferential side of the connecting element 34 is connected with one end of the elastic element 33 close to the pressing element 32, so that the position of the elastic element 33 can be limited by the connecting element 34, thereby avoiding the situation that the elastic element 33 is transversely deformed, the position of the lower end of the elastic element 33 is not changed, and the normal operation of the key switch is influenced.

Referring to fig. 4, fig. 4 is an enlarged schematic view of a structure in fig. 1. It still includes spacing subassembly 4, spacing subassembly 4 includes spacing groove 41, casing 1 is seted up in spacing groove 41, and spacing groove 41 leads to pressing piece 32, make and to lead to pressing piece 32 through spacing groove 41, thereby ensured that the movement track of pressing piece 32 removes for the direction of perpendicular and break-make 31 all the time, and then ensured when exerting pressure to pressing piece 32, pressing piece 32 can not appear and is on a parallel with break-make 31 and remove, lead to the unable normal condition of working of key switch to take place.

Referring back to fig. 4, the limiting component 4 further includes a limiting component 42, the limiting component 42 is connected to the pressing member 32, and the limiting component 42 is located at one end of the pressing member 32 close to the on-off member 31, one end of the limiting component 42 extends into the limiting groove 41, and is limited to the pressing member 32, so that the limiting component 42 can be matched with the limiting groove 41, and limit is performed on the pressing member 32, thereby avoiding the situation that the on-off member 31 and the elastic member 33 eject the pressing member 32 under the effect of elastic force when the pressing member 32 is not under pressure, and can be limited by the pressing member 32, so that the elastic member 33 can be always in a compression state after the pressing member 32 moves to the topmost end, thereby always applying pressure on the on-off member 31, and further ensuring the working stability of the on-off component 3.

To sum up: the elastic piece is arranged to apply pre-pressure to the on-off piece, so that the terminal assembly can be conducted by applying smaller pressure to the pressing piece, the on-off piece can be guaranteed not to shake when slight change occurs to the pressure applied to the on-off piece under the action of the pressure continuously applied to the on-off piece, the contact stability is guaranteed, the pressure applied to the on-off piece can be buffered through the elastic piece, the situation that the on-off piece and the terminal are damaged due to overlarge pressure is avoided, and the service life of the terminal assembly is influenced is avoided.

The above description is only an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A pre-pressed long-life key switch is characterized by comprising

A housing (1);

a terminal assembly (2) connected to the housing (1); and

the on-off assembly (3) comprises an on-off piece (31), a pressing piece (32) and an elastic piece (33), the on-off piece (31) is detachably connected with the terminal assembly (2), the on-off piece (31) is located on one side of the terminal assembly (2), the pressing piece (32) is connected with the shell (1) and drives the on-off piece (31) to be close to or far away from the terminal assembly (2), one end of the elastic piece (33) is connected with the on-off piece (31), and the other end of the elastic piece (33) is connected with the pressing piece (32) and continuously applies force to the on-off piece (31).

2. Pre-stressed push-button switch according to claim 1, characterized in that the number of terminal assemblies (2) is at least two, and a plurality of terminal assemblies (2) are detachably connected to the on-off member (31) at the same time.

3. Pre-stressed, long-life push-button switch according to claim 1, characterized in that the terminal assembly (2) comprises a first terminal (21) and a second terminal (22), the first terminal (21) being connected to the housing (1) and the second terminal (22) being connected to the housing (1).

4. Pre-stressed push-button switch with long service life according to claim 1, wherein the on-off assembly (3) further comprises a connecting member (34), one end of the connecting member (34) is connected to the pressing member (32) and is located on one side of the pressing member (32) close to the on-off member (31), and the connecting member (34) is connected to the elastic member (33).

5. Pre-stressed high lifetime push-button switch according to claim 4, characterised in that the circumferential side of the connecting piece (34) is connected to an end of the resilient piece (33) close to the pressing piece (32).

6. The pre-stressed, long-life push-button switch according to any of claims 1-5, further comprising

The limiting component (4) comprises a limiting groove (41), the limiting groove (41) is formed in the shell (1), and the limiting groove (41) is used for guiding the pressing piece (32).

7. The pre-stressed high-life key switch according to claim 6, wherein the limiting assembly (4) further comprises a limiting member (42), the limiting member (42) is connected to the pressing member (32), the limiting member (42) is located at one end of the pressing member (32) close to the on-off member (31), and one end of the limiting member (42) extends into the limiting groove (41) and limits the pressing member (32).

8. Pre-stressed high lifetime push-button switch according to claim 1, wherein the on-off member (31) is a snap dome.

9. Pre-stressed, long-life push-button switch according to claim 3, characterized in that one end of the on-off member (31) is in contact with one end of the first terminal (21).

10. Pre-stressed high lifetime push-button switch according to claim 1, wherein the location where the resilient member (33) is connected to the on-off member (31) is located in the middle of the on-off member (31).