CN217405297U - Switching device - Google Patents

Abstract

The utility model discloses a switching device, this switching device include casing, terminal subassembly press member and elastic arm. The terminal assembly comprises a first terminal and a second terminal, and the first terminal and the second terminal are arranged in the shell and are arranged at intervals; the pressing piece is arranged on the shell in a lifting manner and can be limited and fixed relative to the shell; the elastic arm is located above the first terminal and the second terminal, and the elastic arm can be driven when the pressing piece descends and elastically abuts against the first terminal and the second terminal. The utility model discloses technical scheme improves the convenience of switching device equipment and reduces manufacturing cost.

Description

Switch device

Technical Field

The utility model relates to the technical field of switches, in particular to switching device.

Background

A switch device in the related art generally includes a housing, a first terminal, a second terminal, a pressing member, and a connecting clip, wherein the first terminal and the second terminal are disposed at an interval in the housing, the pressing member is disposed in the housing in a liftable manner, and after being pressed, the connecting clip is driven to descend to clamp the first terminal and the second terminal, so as to conduct the first terminal and the second terminal. However, in this type of switch device, the first terminal and the second terminal are clamped and conducted by the connecting clip, so that the first terminal needs to be arranged as a flat plate portion and a linear portion perpendicular to the flat plate portion, the second terminal needs to be arranged as a flat plate portion and an L-shaped portion perpendicular to the flat plate portion, and one end of the L-shaped portion is located above the linear portion, so that the connecting clip clamps the linear portion and the L-shaped portion when descending along with the pressing member. Meanwhile, in order to ensure the stable clamping of the linear portion and the L-shaped portion by the connecting clamp, a fixing block for fixing the linear portion and the L-shaped portion needs to be further arranged in the housing. Thus, the structure of the switch device is more complex and the number of parts is more, which results in the switch device being inconvenient to assemble and the manufacturing cost is relatively more,

SUMMERY OF THE UTILITY MODEL

The main object of the present invention is to provide a switching device, which is intended to improve the convenience of the assembly of the switching device and to reduce the manufacturing cost.

To achieve the above object, the present invention provides a switch device comprising:

a housing;

the terminal assembly comprises a first terminal and a second terminal, and the first terminal and the second terminal are arranged in the shell and are arranged at intervals;

the pressing piece is arranged on the shell in a lifting manner and can be limited and fixed relative to the shell; and

and an elastic arm located above the first terminal and the second terminal, the elastic arm being drivable when the pressing member descends and elastically abutting against the first terminal and the second terminal.

Optionally, the resilient arm comprises:

a first arm section having one end connected to the housing and being drivable when the pressing member descends; and

one end of the second arm section is connected to one end of the first arm section, and the second arm section and the first arm section form an included angle;

when the first arm section is driven by the pressing piece, one end, far away from the first arm section, of the second arm section is elastically abutted to the first terminal and the second terminal.

Optionally, one end of the second arm section, which is far away from the first arm section, is connected with a butting arm, and the butting arm is arranged in an arc shape;

when the first arm section is driven by the pressing piece, the convex cambered surface of the abutting arm elastically abuts against the first terminal and the second terminal.

Optionally, a notch portion is formed in one end, away from the first arm section, of the second arm section, the number of the abutting arms is two, and the two abutting arms are located on two sides of the notch portion respectively;

when the first arm section is driven by the pressing piece, the convex arc surfaces of the two abutting arms can elastically abut against the first terminal and the second terminal respectively.

Optionally, a connecting arm is arranged at one end of the first arm section, which is far away from the first arm section, the connecting arm encloses to form a jack, the housing is provided with an insertion shaft, and the insertion shaft is inserted into the jack, so that the first arm section is rotatably connected to the housing;

and/or a pressing block is arranged on the side wall surface of the pressing piece, a sliding groove is arranged on the lower surface of the pressing block, one end of the first arm section, which is connected with the first arm section, is embedded in the sliding groove and can slide in the sliding groove when the pressing piece descends;

and/or the joint of the first arm section and the second arm section is in arc transition arrangement;

and/or the first arm section and the second arm section are arranged in an integrated structure.

Optionally, the resilient arm comprises:

the first plate body is vertically arranged and connected to the pressing piece, and can be driven when the pressing piece descends; and

the second plate body is connected with the first plate body and is horizontally arranged;

when the first plate body is driven by the pressing piece, the second plate body is elastically abutted against the first terminal and the second terminal.

Optionally, the second plate body comprises:

the horizontal section is connected to the first plate body; and

one end of each of the two inclined sections is connected to the horizontal section, and the distance between the two inclined sections is increased in the direction from top to bottom;

when the first plate body is driven by the pressing piece, one end, far away from the horizontal section, of the inclined section elastically abuts against the first terminal and the second terminal.

Optionally, one end of the inclined section, which is far away from the horizontal section, is provided with a butt plate, and the butt plate is arranged in an arc shape;

when the first plate body is driven by the pressing piece, the convex cambered surface of the abutting plate elastically abuts against the first terminal and the second terminal.

Optionally, a protruding shaft is arranged on a side wall surface of the pressing piece, a through hole is formed in the first plate body, and the protruding shaft is inserted into the through hole.

Optionally, it is defined that when the elastic arm elastically abuts against the first terminal and the second terminal, the pressing piece is in a pressing position;

the pressing piece is provided with a limiting groove, the switch device further comprises a limiting rod, and the limiting rod can elastically slide into the limiting groove when the pressing piece descends, so that the pressing piece is limited and fixed on the pressing position.

The technical scheme of the utility model switching device when using, can make the pressing piece drive the elastic arm and descend when descending for the casing through pressing the pressing piece to make the first terminal and the second terminal that lie in the elastic arm elasticity butt of terminal subassembly top in the terminal subassembly, thereby realize switching on between first terminal and the second terminal. Then, the pressing piece is limited and fixed relative to the shell, so that the elastic arm can stably keep the state of elastically abutting against the first terminal and the second terminal.

Because the switch device in the scheme realizes the abutting conduction of the first terminal and the second terminal through the elastic arm arranged above the terminal component, the first terminal and the second terminal can be only arranged in a flat plate shape, and the switch device is not required to be similar to the switch device which adopts the connecting clamp to clamp and conduct the first terminal and the second terminal in the prior art, the first terminal is arranged into a flat plate part and a straight-line part vertical to the flat plate part, the second terminal is also arranged into the flat plate part and an L-shaped part vertical to the flat plate part, and one end of the L-shaped part is positioned above the straight-line part. Meanwhile, a fixing block for fixing the linear part and the L-shaped part is not needed. Therefore, after the elastic arm is adopted to butt and conduct the first terminal and the second terminal, the structure of the first terminal and the structure of the second terminal of the terminal assembly are both simplified, and meanwhile, parts required to be arranged are reduced. That is, the structure of the switching device is simplified, and the number of parts is reduced, thereby facilitating the improvement of the convenience of the assembly of the switching device and the reduction of the manufacturing cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of the switching device of the present invention;

fig. 2 is a schematic view of the switch device in fig. 1 with the pressing member in an unpressed state;

FIG. 3 is a schematic view of the switch device shown in FIG. 1 with the pressing member in a pressing position;

FIG. 4 is another perspective view of the switch device of FIG. 1 with the housing removed;

FIG. 5 is a schematic view of the elastic arm shown in FIG. 2;

fig. 6 is a schematic view of the switch device in fig. 1 in a state that the pressing member is not limited by the limiting rod;

fig. 7 is a schematic view illustrating a state in which a pressing member is limited by a limit rod of the switching device of fig. 1;

fig. 8 is a partial schematic structural view of another embodiment of the switching device of the present invention;

fig. 9 is a schematic structural view of the elastic arm in fig. 8.

The reference numbers indicate:

the realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention 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 the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such 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 to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a switching device.

Referring to fig. 1 to 9, in an embodiment of the present invention, the switch device includes a housing 10, a terminal assembly 20, a pressing member 30, and a resilient arm 40. The terminal assembly 20 comprises a first terminal 21 and a second terminal 23, wherein the first terminal 21 and the second terminal 23 are arranged in the housing 10 at intervals; the pressing piece 30 is arranged on the shell 10 in a lifting way and can be limited and fixed relative to the shell 10; the elastic arm 40 is located above the first terminal 21 and the second terminal 23, and the elastic arm 40 is driven when the pressing member 30 descends and elastically abuts against the first terminal 21 and the second terminal 23.

In an embodiment of the present invention, the housing 10 may be used to mount the terminal assembly 20 and the pressing member 30, so that the respective components of the switching device may be assembled to form a whole. The housing 10 may have a substantially square structure, so that the shape is relatively regular and the housing is easy to machine. Of course, the present application is not limited thereto, and in other embodiments, the housing 10 may also be a cylindrical structure or other shape structures. Further, in order to improve the convenience of processing the housing 10, the housing 10 may include a lower housing 11, an upper housing 12, and a housing 13, wherein the lower housing 11 is connected to the upper housing 12, and the housing 13 covers the upper housing 12 and the lower housing 11 and encloses the upper housing 12 and the lower housing 11 to form an accommodating chamber 14. At this time, the first terminal 21 and the second terminal 23 in the terminal assembly 20 may be at least partially disposed in the accommodating cavity 14. The pressing member 30 may have a lower end disposed in the receiving chamber 14 and an upper end exposed to the outside through the upper case 12 and the outer case 13. The elastic arms 40 may also be disposed in the accommodating cavities 14, so that the terminal assembly 20, the pressing member 30 and the elastic arms 40 are distributed on the housing 10 more compactly and the overall volume of the switching device is reduced. The pressing member 30 may be configured to be pressed by a user, and descend relative to the housing 10 after the user presses the pressing member to drive the elastic arm 40, so that the elastic arm 40 may elastically abut against the first terminal 21 and the second terminal 23 to achieve conduction therebetween. Wherein, the elastic arm 40 may have a space from both the first terminal 21 and the second terminal 23 when not driven by the descending pressing piece 30; of course, the pressing member may be configured to contact only one of the first terminal 21 and the second terminal 23, and then contact both the first terminal 21 and the second terminal 23 after being driven by the descending pressing member 30. In addition, the first terminal 21 and the second terminal 23 may be spaced apart from each other in the horizontal direction, so that the distribution of the two terminals is more regular, thereby improving the convenience of installation. Of course, the present application is not limited thereto, and in other embodiments, the first terminal 21 and the second terminal 23 in the terminal assembly 20 may be arranged in a staggered manner in the vertical direction.

The utility model discloses a switching device of technical scheme can make pressing member 30 drive the elastic arm 40 and descend when descending for casing 10 through pressing member 30 when using to make the elastic arm 40 elasticity butt that is located terminal assembly 20 top in terminal assembly 20 first terminal 21 and second terminal 23 of terminal assembly 20, thereby realize switching on between first terminal 21 and the second terminal 23. Thereafter, the pressing member 30 is further fixed to the housing 10 by a stopper, so that the elastic arm 40 can stably maintain a state of being elastically abutted against the first terminal 21 and the second terminal 23.

Because the switch device in the present embodiment realizes the abutting conduction of the first terminal 21 and the second terminal 23 through the elastic arm 40 disposed above the terminal assembly 20, the first terminal 21 and the second terminal 23 can be only disposed in a flat plate shape, and there is no need to dispose the first terminal 21 as a flat plate portion and a linear portion perpendicular to the flat plate portion, and dispose the second terminal 23 as a flat plate portion and an L-shaped portion perpendicular to the flat plate portion, and one end of the L-shaped portion is located above the linear portion, similar to the switch device in the prior art that uses a connecting clip to clamp and conduct the first terminal 21 and the second terminal 23. Meanwhile, a fixing block for fixing the linear part and the L-shaped part is not needed. Therefore, in the switching device of this embodiment, after the elastic arm 40 is used to make contact conduction between the first terminal 21 and the second terminal 23, the structures of the first terminal 21 and the second terminal 23 of the terminal assembly 20 are both simplified, and the number of parts required to be arranged is reduced. That is, the structure of the switching device is simplified, and the number of parts is reduced, thereby facilitating the improvement of the convenience of the assembly of the switching device and the reduction of the manufacturing cost.

Referring to fig. 2 to 5, in an embodiment of the present invention, the elastic arm 40 includes a first arm section 41 and a second arm section 43, one end of the first arm section 41 is connected to the housing 10 and can be driven when the pressing member 30 descends; one end of the second arm section 43 is connected to one end of the first arm section 41, and the second arm section 43 and the first arm section 41 form an included angle; when the first arm segment 41 is driven by the pressing piece 30, one end of the second arm segment 43, which is away from the first arm segment 41, elastically abuts against the first terminal 21 and the second terminal 23.

In the present embodiment, the first arm segment 41 and the second arm segment 43 are disposed at an angle, so that the elastic arm 40 has a better elastic state. Moreover, when the second arm section 43 abuts against the first terminal 21 and the second terminal 23, the second arm section 43 can be elastically deformed toward the first arm section 41, and at the same time, a deformation elastic force opposite to the deformation direction can be generated to drive the second arm section 43 to be closely attached to the first terminal 21 and the second terminal 23, thereby being beneficial to improving the stability of the elastic arm 40 in abutting against the first terminal and the second terminal 23. Further, in order to improve the overall strength of the elastic arm 40 and the convenience of machining and forming, the first arm segment 41 and the second arm segment 43 may be provided in an integral structure. In addition, the connection between the first arm segment 41 and the second arm segment 43 may be in a circular arc transition arrangement, so that the shape is more regular and the convenience of processing and forming is further improved.

Referring to fig. 3 and fig. 5, in an embodiment of the present invention, an end of the second arm section 43 away from the first arm section 41 is connected to a butting arm 431, and the butting arm 431 is disposed in an arc shape; when the first arm section 41 is driven by the pressing member 30, the outer convex arc surface of the abutting arm 431 elastically abuts against the first terminal 21 and the second terminal 23.

In this embodiment, the second arm section 43 abuts against the first terminal 21 and the second terminal 23 through the arc-shaped abutting arm 431, so that the second arm section 43 can be prevented from damaging the first terminal 21 and the second terminal 23 when abutting against the first terminal 21 and the second terminal 23, and the safety of the first terminal 21 and the second terminal 23 in the process of being abutted and conducted can be improved.

Referring to fig. 3 and fig. 5, in an embodiment of the present invention, a gap 433 is formed at one end of the second arm section 43 away from the first arm section 41, the number of the abutting arms 431 is two, and the two abutting arms 431 are respectively located at two sides of the gap 433; when the first arm segment 41 is driven by the pressing piece 30, the outer convex arc surfaces of the two abutting arms 431 can elastically abut against the first terminal 21 and the second terminal 23, respectively.

In the present embodiment, by the two abutting arms 431 abutting against the first terminal 21 and the second terminal 23, respectively, the abutting area between the second arm segment 43 and the terminal assembly 20 can be made relatively small, so that the smoothness of the abutting process of the second arm segment 43 can be further improved. The two abutting arms 431 can have good elasticity due to the arrangement of the gap 433, so that the two abutting arms can deform towards the first arm section 41 better in the sliding process to generate a large elastic force to cling to the first terminal 21 and the second terminal 23.

Referring to fig. 3, fig. 4 and fig. 5, in an embodiment of the present invention, a connecting arm 411 is disposed at an end of the first arm section 41 away from the first arm section 41, the connecting arm 411 encloses a receptacle 413, the housing 10 is disposed with an insertion shaft 15, and the insertion shaft 15 is inserted into the receptacle 413, so that the first arm section 41 is rotatably connected to the housing 10.

In the embodiment, the first arm segment 41 surrounds the connection arm 411 to form the insertion hole 413 and is inserted and fixed with the insertion hole 413 on the housing 10, so that the connection structure between the two is simple, and the convenience of assembling the switch device is further improved. Of course, it should be noted that the present application is not limited thereto, and in other embodiments, the first arm segment 41 may be fixed to the housing 10 by a screw or the like.

Referring to fig. 4, in an embodiment of the present invention, a pressing block 32 is disposed on a side wall surface of the pressing member 30, a sliding groove 321 is disposed on a lower surface of the pressing block 32, and one end of the first arm section 41 connected to the first arm section 41 is embedded in the sliding groove 321 and slides in the sliding groove 321 when the pressing member 30 descends.

In this embodiment, the pressing member 30 is disposed on the sliding slot 321 of the pressing block 32, so that the first arm segment 41 can slide in the sliding slot 321 along the extending direction of the sliding slot 321 when being driven, and the sliding slot 321 is used to limit the position of the first arm segment 41 during being driven, so that the abutting arm 431 on the subsequent second arm segment 43 accurately and stably abuts against the first terminal 21 and the second terminal 23.

Referring to fig. 8 and 9, in an embodiment of the present invention, the elastic arm 40 includes a first plate 45 and a second plate 47, the first plate 45 is vertically disposed and connected to the pressing member 30, and the first plate 45 can be driven when the pressing member 30 descends; the second plate body 47 is connected to the first plate body 45 and is horizontally arranged; when the first plate 45 is driven by the pusher 30, the second plate 47 elastically abuts against the first terminal 21 and the second terminal 23.

In this embodiment, the elastic arm 40 is composed of the first plate 45 disposed vertically and the second plate 47 disposed horizontally, so that the structure of the elastic arm 40 is simpler, thereby facilitating the convenience of the switch device in machining and forming. Meanwhile, the elastic arm 40 can be conveniently mounted on the pressing member 30 through the first plate 45.

Referring to fig. 8 and 9, in an embodiment of the present invention, the second plate 47 includes a horizontal section 471 and two inclined sections 473, the horizontal section 471 is connected to the first plate 45; one end of each of the two inclined sections 473 is connected to the horizontal section 471, and the distance between the two inclined sections 473 increases from top to bottom; when the first plate 45 is driven by the pressing piece 30, one end of the inclined section 473 away from the horizontal section 471 elastically abuts against the first terminal 21 and the second terminal 23.

In the present embodiment, the second plate body 47 is composed of the horizontal section 471 and the two inclined sections 473, so that the second plate body 47 can maintain a better elastic state. Specifically, when the first plate 45 is driven by the pressing piece 30 that is lowered, the inclined segment 473 of the second plate 47 may abut against the first terminal 21 and the second terminal 23 and be deformed upward, and then the inclined segment 473 may be brought into close contact with the first terminal 21 and the second terminal 23 by the deforming elastic force.

Referring to fig. 8 and 9, in an embodiment of the present invention, an abutting plate 475 is disposed at an end of the inclined section 473 away from the horizontal section 471, and the abutting plate 475 is disposed in an arc shape; when the first plate 45 is driven by the pressing member 30, the convex arc surface of the contact plate 475 elastically contacts the first and second terminals 21 and 23.

In the present embodiment, the inclined section 473 abuts against the first terminal 21 and the second terminal 23 through the arc-shaped abutting plate 475, so that the inclined section 473 can be prevented from damaging the first terminal 21 and the second terminal 23 when abutting against the first terminal 21 and the second terminal 23, and the safety of the first terminal 21 and the second terminal 23 in the process of being abutted and conducted can be improved.

Referring to fig. 8 and 9, in an embodiment of the present invention, a protruding shaft 31 is disposed on a side wall surface of the pressing member 30, a through hole 451 is formed in the first plate 45, and the protruding shaft 31 is inserted into the through hole 451.

In the embodiment, the first plate 45 and the pressing member 30 are inserted into the through hole 451 through the protruding shaft 31 to be fixed, so that the connection structure between the two is simple, and the convenience of assembling the switch device is further improved. Of course, the present invention is not limited thereto, and in other embodiments, the first plate 45 and the pressing member 30 may be fixed by screws or the like.

Referring to fig. 6 and fig. 7, in an embodiment of the present invention, it is defined that the pressing member 30 is in the pressing position when the elastic arm 40 elastically abuts against the first terminal 21 and the second terminal 23; the pressing piece 30 is provided with a limiting groove 33, the switch device further comprises a limiting rod 50, and the limiting rod 50 can elastically slide into the limiting groove 33 when the pressing piece 30 descends, so that the pressing piece 30 is limited and fixed at a pressing position.

In this embodiment, the switch device elastically slides into the limit groove 33 when the pressing member 30 descends through the limit rod 50, so as to realize limit fixing of the pressing member 30, so that the limit structure of the pressing member 30 is simple, and convenience in limit fixing of the pressing member 30 is improved. Specifically, the pressing member 30 may be provided with a V-block 35 above the stopper rod 50, and the V-block 35 encloses the stopper groove 33. A first guide surface 351 may be formed below the V-block 35, and when the pressing member 30 is pressed down, the stopper rod 50 may slide down into the stopper groove 33 under the guide of the first guide surface 351, thereby achieving the stopper fixation of the pressing member 30 at the pressing position. Meanwhile, the pressing member 30 may further be provided with a second guide surface 37 at the upper end of the V-block 35, so that when the pressing member 30 is pressed again, the stopper rod 50 located in the stopper groove 33 may slide out of the stopper groove 33 under the guide of the second guide surface 37 and return to the initial position by its own elasticity. The pressing member 30 can be driven to ascend and return to the initial state by a return spring 60 below, that is, the pressing member 30 can descend to be in the pressing position after being pressed, and then can release the limiting effect of the limiting rod 50 on the pressing member after being pressed again, and can be driven to ascend and return by the spring.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (10)

1. A switching device, comprising:

a housing;

the terminal assembly comprises a first terminal and a second terminal, and the first terminal and the second terminal are arranged in the shell at intervals;

the pressing piece is arranged on the shell in a lifting manner and can be limited and fixed relative to the shell; and

and an elastic arm positioned above the first terminal and the second terminal, the elastic arm being drivable when the pressing member descends and elastically abutting against the first terminal and the second terminal.

2. The switching device of claim 1, wherein the resilient arm comprises:

a first arm section having one end connected to the housing and being drivable when the pressing member descends; and

one end of the second arm section is connected to one end of the first arm section, and the second arm section and the first arm section form an included angle;

when the first arm section is driven by the pressing piece, one end, far away from the first arm section, of the second arm section is elastically abutted to the first terminal and the second terminal.

3. The switching device according to claim 2, wherein an abutting arm is connected to an end of the second arm section away from the first arm section, and the abutting arm is arranged in an arc shape;

when the first arm section is driven by the pressing piece, the convex cambered surface of the abutting arm elastically abuts against the first terminal and the second terminal.

4. The switch device according to claim 3, wherein one end of the second arm section, which is far away from the first arm section, is provided with a notch portion, the number of the abutting arms is two, and the two abutting arms are respectively located at two sides of the notch portion;

when the first arm section is driven by the pressing piece, the convex arc surfaces of the two abutting arms can elastically abut against the first terminal and the second terminal respectively.

5. The switching device according to any one of claims 2 to 4, wherein the first arm section is provided with a connecting arm at an end thereof remote from the first arm section, the connecting arm enclosing a receptacle, the housing being provided with a shaft inserted into the receptacle so that the first arm section is rotatably connected to the housing;

and/or a pressing block is arranged on the side wall surface of the pressing piece, a sliding groove is arranged on the lower surface of the pressing block, one end of the first arm section, which is connected with the first arm section, is embedded in the sliding groove and can slide in the sliding groove when the pressing piece descends;

and/or the joint of the first arm section and the second arm section is in arc transition arrangement;

and/or the first arm section and the second arm section are arranged in an integrated structure.

6. The switching device of claim 1, wherein the resilient arm comprises:

the first plate body is vertically arranged and connected to the pressing piece, and can be driven when the pressing piece descends; and

the second plate body is connected with the first plate body and is arranged horizontally;

when the first plate body is driven by the pressing piece, the second plate body is elastically abutted against the first terminal and the second terminal.

7. The switching device of claim 6, wherein the second board body comprises:

the horizontal section is connected to the first plate body; and

one end of each of the two inclined sections is connected to the horizontal section, and the distance between the two inclined sections is increased in the direction from top to bottom;

when the first plate body is driven by the pressing piece, one end, far away from the horizontal section, of the inclined section elastically abuts against the first terminal and the second terminal.

8. The switching device according to claim 7, wherein an end of the inclined section away from the horizontal section is provided with an abutting plate, and the abutting plate is arranged in an arc shape;

when the first plate body is driven by the pressing piece, the convex cambered surface of the abutting plate elastically abuts against the first terminal and the second terminal.

9. The switch device according to any one of claims 6 to 8, wherein a protruding shaft is provided on a side wall surface of the pressing member, and a through hole is provided in the first plate, into which the protruding shaft is inserted.

10. The switching device according to claim 1, wherein the pressing member is defined in a pressing position when the elastic arm elastically abuts against the first terminal and the second terminal;

the pressing piece is provided with a limiting groove, the switch device further comprises a limiting rod, and the limiting rod can elastically slide into the limiting groove when the pressing piece descends, so that the pressing piece is limited and fixed on the pressing position.

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