TWI776704B - Switch device - Google Patents

Abstract

The present invention discloses a switch device, which comprises a switch panel, a cam structure, a first conductive member, a second conductive member and a movable conductive member. The switch panel has a first curved structure which can reciprocate moving in a pressing direction. The cam structure is disposed corresponding to the switch panel. The cam structure has a body, a plurality of first protruding ribs and a plurality of second protruding ribs. The first protruding ribs and the second protruding ribs are radially and staggered disposed on the side surface of the body. The body has a second curved structure disposed opposite to the first curved structure, so that the first curved structure drives the cam structure to move or rotate when the switch panel is pressed. The first conductive member and the second conductive member are respectively disposed on both sides of the cam structure. The movable conductive member is movably disposed between the first conductive member and the second conductive member; when the switch panel is pressed to turn the cam structure is rotated by pressing the switch panel, one of the first protruding ribs pushes the movable conductive member to contact the first conductive member or the second conductive member.

Description

switchgear

The present invention relates to a switch device, in particular to a switch device with a flat overall appearance.

Common switching devices on the market, such as light switches, can be divided into electronic and mechanical. The electronic switching relationship uses capacitive sensing. When a finger touches the switch, the capacitance of the internal circuit of the switch will change. When the controller detects When the capacitance changes, it will control the opening and closing of the light; the mechanical switch is a more traditional method. When switching, the spring in the switch will make the conductive sheet in the junction box swing, and the swing of the conductive sheet will change the current line. Whether it is connected or not, in order to achieve the purpose of switching the light, this kind of mechanical light switch is also a large user at present.

In the overall appearance of the traditional mechanical switch, no matter whether the light is turned on or off, the switch panel always has a part protruding, which affects the overall flatness of the switch. Although there are many manufacturers to beautify the appearance of the switch, such as using different color matching or adding appearance treatment to increase the overall texture, the protruding part is still quite abrupt. In addition, although the overall appearance of the traditional electronic touch switch can be kept the same, it is limited by the effective touch range. When using other parts of the body to touch the switch, there is a chance that the switch cannot be successfully triggered, which greatly affects the convenience of use.

The purpose of the present invention is to provide a switch device, which can solve the problem of protruding mechanical switches, and does not have the problem of limited touch effective range of the touch switches.

In order to achieve the above object, a switch device according to the present invention includes a switch panel, a cam structure, a first conductive member, a second conductive member and a movable conductive member. The switch panel has a first curved structure capable of reciprocating movement in a pressing direction. The cam structure is arranged corresponding to the switch panel. The cam structure has a body, a plurality of first protruding ribs and a plurality of second protruding ribs, the first protruding ribs and the second protruding ribs are radially arranged on the body in a staggered manner The body has a second curved surface structure opposite to the first curved surface structure, so that when the switch panel is pressed, the first curved surface structure drives the cam structure to move or rotate. The first conductive member and the second conductive member are respectively disposed on both sides of the cam structure. The movable conductive member is movably arranged between the first conductive member and the second conductive member; when the switch panel is pressed to make the cam structure rotate, the first protruding rib of one of them pushes the movable conductive member to contact the first conductive member piece or second conductive piece.

In one embodiment, the first protruding ribs and the second protruding ribs are disposed opposite to each other.

In one embodiment, the lengths of the first protruding ribs are greater than the lengths of the second protruding ribs.

In one embodiment, the moving direction of the movable conductive member is perpendicular to the pressing direction.

In one embodiment, the switch device further includes an appearance element disposed on the periphery of the switch panel, and the appearance element is flush with the surface of the switch panel.

In one embodiment, the switch device further includes an upper casing connected to the appearance element, the upper casing has a through hole corresponding to the switch panel, and a moving shaft of the switch panel passes through the through hole and is connected to the body.

In one embodiment, the upper casing further has a stop structure corresponding to the first protruding ribs or the second protruding ribs, and the switch panel can be pressed to drive the cam structure to move to the first protruding ribs in the pressing direction. Or the second protruding rib is disengaged from the stop structure.

In one embodiment, the switch device further includes an elastic member connected to the body of the cam structure; wherein, when the first protruding rib or the second protruding rib is disengaged from the stop structure, the cam structure utilizes the first curved surface structure and the second curved surface structure The elastic element stores an elastic restoring force.

In one embodiment, when the pressing force on the switch panel is removed, the switch panel and the cam structure return to the original position when the switch panel is not pressed through the elastic restoring force.

In one embodiment, the upper casing further has a circular arc guide rail arranged in cooperation with the first protruding rib, and the cam structure can rotate along the circular arc guide rail.

In one embodiment, the switch device further includes a lower casing and an elastic member. The lower casing is connected with the upper casing and has a fixing column. Two sides of the elastic piece abut against the main body and the lower casing of the cam structure, and the elastic piece and the movable conductive piece are sleeved on the fixed column.

In one embodiment, the movable conductive member has a through hole, and the lower casing further has a limit post corresponding to the through hole, and the cross-sectional area of the through hole is larger than that of the limit post, so that the limit post can limit the movable conductive member. movement.

In one embodiment, the movable conductive member has a protruding post, and the lower casing further has a limiting hole corresponding to the protruding post. The cross-sectional area of the limiting hole is larger than that of the protruding post, so that the limiting hole can limit the Movement of moving conductors.

Based on the above, in the switch device of the present invention, when the switch panel is pressed and moved in the pressing direction, the cam structure will be driven to move or rotate, thereby driving the movable conductive member to contact the first conductive member or the second conductive member. This controls whether the current line is turned on. Because the switch panel reciprocates in a straight line, there is no need to reserve a space for the rotation movement of the switch panel, so the problem of protruding mechanical switches can be solved, and there is no problem of limiting the effective touch range of the touch switches.

The switch device according to the embodiment of the present invention will be described below with reference to the related drawings, wherein the same elements will be described with the same reference signs.

The switch device of the following embodiments is an example of a power switch of an electric lamp, but it is not limited thereto. In different embodiments, the switch device of the present invention can also be applied to, for example, a power switch of an electronic device.

1A and 1B are a front view and a side view of a switch device according to an embodiment of the present invention, respectively, and FIG. 1C is a schematic diagram of wiring of the switch device according to an embodiment of the present invention. Here, FIG. 1C does not show the cam structure 12 and the lower housing 19 of the switch device 1 .

Please refer to FIG. 1A and FIG. 1B first, the switch device 1 includes a switch panel 11 , an appearance part 17 , an upper casing 18 and a lower casing 19 . The upper casing 18 is connected with the appearance piece 17 , and the appearance piece 17 is disposed on the periphery of the switch panel 11 and is flush with the surface 111 of the switch panel 11 . Specifically, when the user presses the switch panel 11 , the switch panel 11 can move toward the inside of the switch device 1 relative to the appearance member 17 (ie, the pressing direction D1 in FIG. 1B ), when the switch panel 11 is in the initial position that is not pressed , the surface 111 and the appearance part 17 form a flat surface. The reason is that: since the pressing direction D1 is the direction perpendicular to the surface 111 of the switch panel 11, the interior of the switch device 1 does not need to reserve the rotation movement space of the switch panel 11, so it can be Solve the problem that the mechanical switch panel is prominent, and there is no problem that the touch effective range of the touch switch is limited.

Referring to FIG. 1C , in addition to the switch panel 11 , the appearance part 17 , the upper case 18 and the lower case 19 , the switch device 1 of this embodiment may further include a cam structure 12 (not shown in FIG. 1C , refer to FIG. 2A ) , a movable conductive member 13 , a first conductive member 14 , a second conductive member 15 , a third conductive member 16 and an elastic member 20 . The upper casing 18 is connected with the lower casing 19 (FIG. 1B) to form an accommodating space (ie, the space in the junction box), the cam structure 12, the movable conductive member 13, the first conductive member 14, the second conductive member 15, Both the third conductive member 16 and the elastic member 20 are disposed in the accommodating space. As shown in FIG. 1C , the movable conductive member 13 , the first conductive member 14 , the second conductive member 15 and the third conductive member 16 respectively have at least one hole for fixing or connecting with other components. In this embodiment, the live wire of the power supply is connected to the third conductive member 16, which is further connected to the movable conductive member 13, the second conductive member 15 is connected to the positive terminal of the electric lamp, and the negative terminal of the electric lamp is grounded (0V). The switch device 1 uses the movable conductive member 13 to switch the live wire to connect to the first conductive member 14 or the second conductive member 15, so as to achieve the purpose of controlling the electric light to be turned on and off. If the movable conductive member 13 contacts the first conductive member 14, because the live wire of the electric lamp is connected to the first conductive member 14 through the third conductive member 16 and the movable conductive member 13, the whole circuit is not conducted, and the electric lamp is turned off; otherwise , if the movable conductive member 13 contacts the second conductive member 15, the circuit is turned on, and the electric lamp is lit.

2A is an exploded schematic view of the switch device 1 of the embodiment of FIG. 1B , FIGS. 2B to 2F are schematic views of the operation process of the switch device 1 of the embodiment of FIG. 2A , and FIG. 2G is a partial enlarged view of the switch device 1 of FIG. 2D . Schematic. 2B and FIG. 2D are respectively three-dimensional cross-sectional views of the switch device 1 , FIG. 2C is a cross-sectional schematic view of the switch device 1 of FIG. 2B , and FIGS. 2E and 2F are respectively a cross-sectional schematic view of the switch device 1 of FIG. 2D .

Referring first to FIGS. 2A to 2C , the switch panel 11 has a first curved surface structure S1 capable of reciprocating movement in the pressing direction D1 . The switch panel 11 of the present embodiment has a moving shaft 112 , the switch panel 11 and the moving shaft 112 can reciprocate along the pressing direction D1 , and the side of the moving shaft 112 facing the cam structure 12 has a first curved surface structure S1 . Here, the upper casing 18 has a through hole 181 corresponding to one of the switch panel 11 , and the moving shaft 112 of the switch panel 11 can pass through the through hole 181 and be connected with (the body 121 of the cam structure 12 ).

The cam structure 12 is provided corresponding to (the moving shaft 112 of the switch panel 11 ). The cam structure 12 is used to convert the linear motion of the switch panel 11 moving in the pressing direction D1 into a rotational motion, so as to change the position of the movable conductive member 13 . The cam structure 12 has a main body 121 , a plurality of first protruding ribs 122 and a plurality of second protruding ribs 123 , the first protruding ribs 122 and the second protruding ribs 123 are radially arranged on the side surface of the main body 121 . . In this embodiment, the main body 121 is a hollow annular shape, and the first protruding ribs 122 and the second protruding ribs 123 are radially arranged on the side surface of the main body 121 . The number of the first protruding ribs 122 and the second protruding ribs 123 in this embodiment is three respectively, and “arranged on the side surface of the main body 121 in a staggered manner” means that according to the first protruding ribs 122 , the second protruding ribs 123 , the first The protruding rib 122 , the second protruding rib 123 , the first protruding rib 122 , and the second protruding rib 123 are connected to the side surface of the body 121 in sequence. Therefore, with respect to the body 121 , the first protruding ribs 122 and the second protruding ribs 123 are disposed opposite to each other. In other words, the protruding ribs located on the opposite sides of the body 121 are the first protruding ribs 122 and the second protruding ribs 123 respectively, and the lengths of the first protruding ribs 122 and the second protruding ribs 123 are different. The length of the first protruding rib 122 in this embodiment is greater than the length of the second protruding rib 123 . As shown in FIG. 2C , when the switch panel 11 is not pressed in the initial state, one of the first protruding ribs 122 of the cam structure 12 ( FIG. 2C is the first protruding rib 122 on the uppermost side) will abut against the movable conductive member 13 , so that the movable conductive member 13 contacts the first conductive member 14. It can be seen from FIG. 1C that the switch device 1 is in an off state at this time, and the electric light is not on.

The main body 121 of the cam structure 12 has a second curved structure S2 which is reciprocated in the pressing direction D1 and is opposite to the first curved structure S1. In other words, the side of the body 121 facing the moving shaft 112 of the switch panel 11 has the second curved structure S2 , and the second curved structure S2 is disposed corresponding to the first curved structure S1 . Through the corresponding relationship between the first curved surface structure S1 and the second curved surface structure S2, when the switch panel 11 is pressed to move the switch panel 11 in the pressing direction D1, the first curved surface structure S1 can drive the cam structure 12 to generate a pulse in the pressing direction D1. It moves or rotates, or rotates while moving in the pressing direction D1, which will be described in detail below.

The first conductive member 14 and the second conductive member 15 are respectively disposed on two sides of the cam structure 12 . The movable conductive member 13 is movably disposed between the first conductive member 14 and the second conductive member 15 , and the movable conductive member 13 can move between the first conductive member 14 and the second conductive member 15 . In addition, the lower casing 19 of this embodiment has a fixing column 191 , and the elastic member 20 is disposed on the fixing column 191 . Here, the fixing column 191 penetrates the corresponding holes of the elastic member 20 , the movable conductive member 13 and the third conductive member 16 to limit the positions of the elastic member 20 , the movable conductive member 13 and the third conductive member 16 . The elastic member 20 in this embodiment is a spring and is disposed between the cam structure 12 and the lower casing 19 . The two sides of the elastic member 20 abut against the main body 121 and the lower casing 19 of the cam structure 12 respectively. Therefore, when the moving shaft 112 of the switch panel 11 drives the cam structure 12 to move in the pressing direction D1, the elastic member 20 is also compressed by the body 121 of the cam structure 12 to generate an elastic restoring force. The direction of the elastic restoring force is the opposite direction of the pressing direction D1. When the pressing force on the switch panel 11 is removed and the elastic restoring force is acting, the cam structure 12 and the switch panel 11 will be pushed back when they are not pressed. the initial position.

Specifically, the first curved surface structure S1 of the moving shaft 112 and the second curved surface structure S2 of the main body 121 in this embodiment respectively have a plurality of oppositely arranged wavy surfaces, and the two oppositely arranged wavy surfaces make the switch panel 11 move in the pressing direction When D1 moves, the cam structure 12 can also be driven to move and rotate in the pressing direction D1, thereby compressing the elastic member 20 to generate an elastic restoring force. However, as shown in FIGS. 2A and 2B , the upper housing 18 has a stopper structure 182 corresponding to the first protruding rib 122 or the second protruding rib 123 , and the switch panel 11 can be pressed to drive the cam structure 12 toward the pressing The direction D1 moves until the first protruding rib 122 or the second protruding rib 123 leaves the stopper structure 182 . However, the switch panel 11 is pressed in the pressing direction D1 but not pressed to the bottom, so that the moving distance of the moving shaft 112 and the cam structure 12 is insufficient. When the first protruding rib 122 or the second protruding rib 123 is released from the stop structure 182, the cam structure 12 only moves but does not rotate.

As shown in FIG. 2D and FIG. 2E , when the switch panel 11 is pressed to the bottom and the second protruding rib 123 is separated from the stop structure 182 , the cam structure 12 not only produces a linear motion in the pressing direction D1 , but also passes through the first curved surface structure S1 . With the cooperation and interaction of the second curved surface structure S2, the switch panel 11 can also drive the cam structure 12 (the body 121 of the body 121) to rotate ( FIG. 2E ). The rotation of the cam structure 12 will change the cooperation between the cam structure 12 and the movable conductive member 13 The position of the movable conductive member 13 is indirectly displaced. As shown in FIGS. 2E to 2F , the cam structure 12 may generate a rotational motion in the rotational direction D3 (clockwise), and one of the first protruding ribs 122 (the first protruding rib 122 on the lower side of FIG. 2F ) may contact The movable conductive member 13 ( FIG. 2E ) can then push the movable conductive member 13 to move in the moving direction D2 and contact the second conductive member 15 ( FIG. 2F ).

In the above process, when the pressing force on the switch panel 11 is removed, the elastic restoring force of the elastic member 20 will push the cam structure 12 and the switch panel 11 back to the initial position shown in FIG. During the springing process, the cam structure 12 can use the elastic restoring force to continuously rotate to push the movable conductive member 13 ( FIG. 2E to FIG. 2F ). At this time, the moving direction D2 of the movable conductive member 13 is downward and perpendicular to the pressing direction D1 (that is, the moving direction D2 is parallel to the surface 111 of the switch panel 11 ), until the first protruding rib 122 abuts against the movable conductive member 13. The movable conductive member 13 is brought into contact with the second conductive member 15. Since the opposite second protruding rib 123 of the first protruding rib 122 that pushes the movable conductive member 13 to move is shorter, even if the second protruding rib 123 contacts the movable conductive member 13 , the movable conductive member 13 cannot be pushed. . In other words, in this embodiment, only one first protruding rib 122 can push the movable conductive member 13 to contact one of the first conductive member 14 and the second conductive member 15 at the same time. When the cam structure 12 returns to the initial position, the movable conductive member 13 will also move to contact the second conductive member 15 , so that the third conductive member 16 can be electrically connected to the second conductive member 15 through the movable conductive member 13 . As can be seen from FIG. 1C , at this time, the switch device 1 is in an on state, and the electric lamp is turned on.

In addition, as shown in FIG. 2G , the upper casing 18 of this embodiment further has a circular arc guide rail 183 arranged in cooperation with the first protruding rib 122 . During the rebound process of the structure 12 returning to the initial position, the first protruding rib 122 of the cam structure 12 will cooperate with the arc guide rail 183 of the upper casing 18 to continue to rotate in the arc guide rail 183 until the cam structure 12 is restored. When the first protruding rib 122 or the second protruding rib 123 is blocked by the blocking structure 182 , the cam structure 12 will stop rotating (the state of FIG. 2F ).

Referring to FIG. 2E and FIG. 2F again, the movable conductive member 13 of this embodiment has a through hole 131 , and the lower case 19 further has a limit post 192 corresponding to the through hole 131 . The cross-sectional area of the through hole 131 is larger than that of the limiting column 192 , so that the limiting column 192 can limit the movement of the movable conductive member 13 (the moving distance is controlled by the cross-sectional area of the through hole 131 ). The movable conductive member 13 of this embodiment has two through holes 131 located on opposite sides of the cam structure 12 , and the lower housing 19 has two limit posts 192 corresponding to the two through holes 131 . In this embodiment, the limiting column 192 of the lower casing 19 does not move, and the through hole 131 of the movable conductive member 13 moves. However, this is not limited. In different embodiments, the movable conductive member 13 may have a protruding column (not shown). ), and the lower case 19 may have a limit hole corresponding to the protruding column, and the cross-sectional area of the limit hole of the lower case 19 may be larger than the cross-sectional area of the protruding column of the movable conductive member 13, so that the limit of the lower case 19 The position hole can limit the movement of the movable conductive member 13 (the moving distance is controlled by the cross-sectional area of the position limit hole of the lower casing 19 ).

Please refer to FIG. 3A and FIG. 3B , which are schematic diagrams of different operation processes of the switch device 1 according to the embodiment of FIG. 2A , respectively.

In this embodiment, when the light is to be turned off, the switch panel 11 can be pressed to the end again. As mentioned above, the cam structure 12 will move in the pressing direction D1 plus the rotational movement (which is still in the clockwise rotational direction D3). ), to change the matching position between one of the first protruding ribs 122 of the cam structure 12 and the movable conductive member 13, when the switch panel 11 is no longer pressed, the elastic restoring force of the elastic member 20 will also make the cam structure 12 and the movable conductive member 13 different. When the switch panel 11 is pushed back to the initial position, the movable conductive member 13 will be pushed by one of the first protruding ribs 122 (the first protruding rib 122 on the upper side in FIG. 3A ) and move in the opposite direction of the moving direction D2 (as shown in FIG. 3A ). 2F→ FIG. 3A→ FIG. 3B ), until the first protruding rib 122 pushes the movable conductive member 13 to contact the first conductive member 14 , as can be seen from FIG. 1C , the switch device 1 is turned off and the light is off.

In connection with the above, in the switch device 1 of the present embodiment, through the design of each element structure and its interconnection relationship, when the switch panel 11 is pressed, the cam structure 12 will be driven to move and rotate in the pressing direction D1. Therefore, the cam structure 12 will move and rotate in the pressing direction D1. The position of the movable conductive member 13 is changed so that the movable conductive member 13 can contact the first conductive member 14 or the second conductive member 15, thereby controlling whether the current line is connected. Because the switch panel 11 reciprocates in a straight line, there is no need to reserve a space for the rotational movement of the switch panel 11, which can solve the problem of the protruding mechanical switch, make the overall appearance flat and consistent, and there will be no touch control of the touch switch. Scope limitation issue.

To sum up, in the switch device of the present invention, when the switch panel is pressed and moved in the pressing direction, the cam structure is driven to move or rotate, thereby driving the movable conductive member to contact the first conductive member or the second conductive member. This controls whether the current line is turned on. Because the switch panel reciprocates in a straight line, there is no need to reserve a space for the rotation movement of the switch panel, so the problem of protruding mechanical switches can be solved, and there is no problem of limiting the effective touch range of the touch switches.

The above description is exemplary only, not limiting. Any equivalent modifications or changes that do not depart from the spirit and scope of the present invention should be included in the scope of the appended patent application.

1: Switching device 11: Switch panel 111: Surface 112: Move axis 12: Cam structure 121: Ontology 122: First protruding rib 123: Second protruding rib 13: Movable conductive parts 131,181: Perforation 14: The first conductive part 15: Second conductive part 16: The third conductive part 17: Appearance parts 18: Upper shell 182: Stop Structure 183: Circular guide rail 19: Lower shell 191: Fixed column 192: Limit post 20: Elastic D1: Pressing direction D2: moving direction D3: Rotation direction S1: The first surface structure S2: Second surface structure

1A and 1B are a front view and a side view of a switch device according to an embodiment of the present invention, respectively. FIG. 1C is a schematic diagram of the wiring of the switch device according to an embodiment of the present invention. FIG. 2A is an exploded schematic view of the switch device of the embodiment of FIG. 1B . 2B to 2F are schematic diagrams of the operation process of the switch device of the embodiment of FIG. 2A, respectively. FIG. 2G is a partial enlarged schematic view of the switch device of FIG. 2D . FIG. 3A and FIG. 3B are schematic diagrams of different operation processes of the switch device of the embodiment of FIG. 2A, respectively.

1: Switching device

11: Switch panel

112: Move axis

12: Cam structure

121: Ontology

122: First protruding rib

123: Second protruding rib

13: Movable conductive parts

14: The first conductive part

15: Second conductive part

16: The third conductive part

18: Upper shell

181: Perforation

182: Stop Structure

19: Lower shell

191: Fixed column

192: Limit post

20: Elastic

D1: Pressing direction

S1: The first surface structure

S2: Second surface structure

Claims (13)

A switchgear comprising: a switch panel with a first curved surface structure capable of reciprocating movement in a pressing direction; A cam structure is disposed corresponding to the switch panel, the cam structure has a body, a plurality of first protruding ribs and a plurality of second protruding ribs, the first protruding ribs and the second protruding ribs are radial and staggered on the side surface of the main body, the main body has a second curved surface structure opposite to the first curved surface structure, so that when the switch panel is pressed, the first curved surface structure drives the cam structure to move or rotate; A first conductive member and a second conductive member are respectively disposed on both sides of the cam structure; and A movable conductive member is movably disposed between the first conductive member and the second conductive member, when the switch panel is pressed to make the cam structure rotate, the first protruding rib of one of them pushes the The movable conductive member contacts the first conductive member or the second conductive member. The switch device as claimed in claim 1, wherein the first protruding ribs and the second protruding ribs are disposed opposite to each other. The switch device of claim 1, wherein the lengths of the first protruding ribs are greater than the lengths of the second protruding ribs. The switch device according to claim 1, wherein the moving direction of the movable conductive member is perpendicular to the pressing direction. The switch device as claimed in claim 1, further comprising: An appearance piece is arranged on the periphery of the switch panel, and the appearance piece is flush with the surface of the switch panel. The switch device as claimed in claim 5, further comprising: An upper casing is connected with the appearance piece, the upper casing has a through hole corresponding to the switch panel, a moving shaft of the switch panel passes through the through hole, and is connected with the body. The switch device according to claim 6, wherein the upper casing further has a stopper structure corresponding to the first protruding ribs or the second protruding ribs, and the switch panel can be pressed to drive the cam structure toward The pressing direction moves until the first protruding rib or the second protruding rib leaves the stop structure. The switch device as claimed in claim 7, further comprising: an elastic piece connected with the body of the cam structure; Wherein, when the first protruding rib or the second protruding rib is separated from the stop structure, the cam structure is rotated by the cooperation of the first curved structure and the second curved structure, and the elastic member stores an elastic restoring force. The switch device according to claim 8, wherein when the pressing force on the switch panel is removed, the switch panel and the cam structure return to their original positions when they are not pressed through the elastic restoring force. The switch device according to claim 8, wherein the upper casing further has a circular arc guide rail arranged in cooperation with the first protruding rib, and the cam structure can rotate along the circular arc guide rail. The switch device as claimed in claim 6, further comprising: a lower shell, connected with the upper shell, the lower shell has a fixing column; and an elastic piece, the two sides of which abut against the main body and the lower casing of the cam structure, and the elastic piece and the movable conductive piece are sleeved on the fixed post. The switch device according to claim 11, wherein the movable conductive member has a through hole, the lower casing further has a limit post corresponding to the through hole, and the cross-sectional area of the through hole is larger than that of the limit post, The limit post can limit the movement of the movable conductive member. The switch device according to claim 11, wherein the movable conductive member has a protruding column, the lower case further has a limiting hole corresponding to the protruding column, and the cross-sectional area of the limiting hole is larger than that of the protruding column. The cross-sectional area enables the limiting hole to limit the movement of the movable conductive member.

Images