Switching device

Abstract

A switching device comprises a shell, a rocker arm, a reset piece, a contact support, a counter-force piece, a moving contact and a static contact, the rocker arm, the reset piece, the contact support, the counter-force piece, the moving contact and the static contact are arranged in the shell, a first through hole is formed in the shell, the reset piece is connected with the rocker arm and drives the rocker arm to rotate, the counter-force piece is connected with the contact support and drives the contact support to slide along a straight line, and the static contact is installed on the shell. The moving contact is installed on the contact support, the moving contact is in contact with or disconnected from the static contact along with sliding of the contact support, the rocker arm comprises an operation portion and a driving portion, the operation portion extends out of the first through hole, the driving portion is matched with the contact support, and the contact support is obliquely arranged in the shell. The linear motion trail of the contact support and the side face, provided with the first through hole, of the shell form an acute angle, external force is applied to the operation portion of the rocker arm, the rocker arm is made to rotate by overcoming the acting force of the reset piece, the contact support slides linearly under the cooperation of the driving portion of the rocker arm and the counter-force piece, and the moving contact and the static contact are made to be disconnected or make contact. According to the invention, the contact opening distance can be enlarged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of low-voltage apparatus, and particularly relates to a switch device. BACKGROUND

[0002] The switch device is an electrical device connected in a circuit to control the conduction or disconnection of the circuit, and is widely used in low-voltage circuits because of its simple structure, small size, and convenient on-off.

[0003] In the prior art, the switch device has a large switching stroke and a small opening distance between the contacts, which poses a safety risk. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects of the prior art and provides a switch device that enlarges the opening distance between the contacts.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] The utility model provides a switch device, which comprises a shell, a rocker arm, a reset member, a contact support, a counterforce member, a moving contact and a stationary contact arranged in the shell, a first through hole is arranged on the shell, the reset member is connected with the rocker arm to drive the rocker arm to rotate, the counterforce member is connected with the contact support to drive the contact support to slide along a straight line, the stationary contact is installed on the shell, the moving contact is installed on the contact support, the moving contact contacts or disconnects the stationary contact along with the sliding of the contact support,

[0007] The rocker arm comprises an operating part and a driving part, the operating part extends out of the first through hole, the driving part cooperates with the contact support, the contact support is obliquely arranged in the shell, the straight line motion track of the contact support forms an acute angle with the side of the shell where the first through hole is arranged, an external force is applied to the operating part of the rocker arm to make the rocker arm rotate against the force of the reset member, the contact support slides along a straight line under the cooperation of the driving part of the rocker arm and the counterforce member, and the moving contact disconnects or contacts the stationary contact.

[0008] In a possible implementation manner, the shell has a rectangular structure, and the straight line motion track of the contact support coincides with the diagonal line of the shell of the rectangular structure.

[0009] In a possible implementation, the shell is a rectangular structure, comprising four sides and two opposite mounting surfaces, the contact support is arranged between the two mounting surfaces, one of the sides is provided with the first through hole, two first sliding grooves are oppositely arranged on the two mounting surfaces, and two first sliding rails are arranged on the contact support; or, two first sliding rails are oppositely arranged on the two mounting surfaces, two first sliding grooves are arranged on the contact support, and the two first sliding grooves and the two first sliding rails are correspondingly and fittingly mounted, and the included angle between the first sliding groove and any of the sides is an acute angle.

[0010] In a possible implementation, the switch device comprises two parallel movable contacts and four spaced static contacts, the two movable contacts are mounted on the contact support, the four static contacts comprise a first static contact, a second static contact, a third static contact and a fourth static contact, two movable contact portions are arranged at two ends of one movable contact, the first static contact and the second static contact correspond to the two movable contact portions of one movable contact, the third static contact and the fourth static contact correspond to the two movable contact portions of one movable contact, and the static contact comprises a first wiring portion, the first wiring portions of the four static contacts partially extend from one of the two opposite surfaces in the thickness direction of the shell.

[0011] In a possible implementation, the first wiring portion of the first static contact is connected with the first wiring portion of the third static contact, and the first wiring portion of the second static contact is connected with the first wiring portion of the fourth static contact, which are respectively used as an incoming line end and an outgoing line end;

[0012] or one of the first wiring portion of the first static contact and the first wiring portion of the fourth static contact is used as an incoming line end, and the other is used as an outgoing line end, the first wiring portion of the second static contact is connected with the first wiring portion of the third static contact, or one of the first wiring portion of the second static contact and the first wiring portion of the third static contact is used as an incoming line end, and the other is used as an outgoing line end, and the first wiring portion of the first static contact is connected with the first wiring portion of the fourth static contact;

[0013] or, the first wiring portion of the first static contact and the first wiring portion of the second static contact are respectively used as an incoming line end and an outgoing line end of one line, and the first wiring portion of the third static contact and the first wiring portion of the fourth static contact are used as an incoming line end and an outgoing line end of another line.

[0014] In a possible implementation, a buffer is arranged on the shell, and the buffer is arranged at a position close to the rocker arm and abuts against the rocker arm; or the buffer is arranged at a position close to the contact support and abuts against the contact support.

[0015] In a possible implementation, the rocker arm comprises a first force arm and a second force arm, the first force arm and the second force arm are connected, and the rotation axis of the rocker arm is located at the connection position of the first force arm and the second force arm, the first force arm comprises the operation part, the second force arm comprises the driving part, one end of the reset member is connected with the shell, and the other end is connected with the first force arm or the second force arm.

[0016] In a possible implementation, the contact support comprises a force receiving part and a counterforce part, the force receiving part is in abutment with the driving part, and the counterforce part is provided with a counterforce member between the counterforce part and the shell.

[0017] In a possible implementation, the contact support comprises a force receiving part and a counterforce part, the force receiving part is in abutment with the driving part, and the counterforce part is provided with a counterforce member between the counterforce part and the shell.

[0018] In a possible implementation, the torque provided by the counterforce member to the rocker arm is less than the torque provided by the reset member to the rocker arm.

[0019] In a possible implementation, the length of the second force arm is greater than the length of the first force arm.

[0020] In a possible implementation, one end of the at least one movable contact extends from one side of the contact support and is in corresponding cooperation with the at least one fixed contact on the shell, or two ends of the at least one movable contact extend from two sides of the contact support, and the shell is provided with at least two fixed contacts at intervals, and the at least two fixed contacts are in corresponding cooperation with the two ends of the at least one movable contact.

[0021] In a possible implementation, the shell of the switch device comprises a cover and a base, the cover is covered on the base, the contact support, the counterforce member, the rocker arm, the reset member and the fixed contact are arranged on the base, the cover is provided with a third through hole corresponding to the position of the fixed contact, and the fixed contact partially passes through the third through hole.

[0022] In a possible implementation, a connecting conductor is arranged between the first wiring parts of the two fixed contacts, and the two ends of the connecting conductor are in plug-in connection with the first wiring parts.

[0023] In a possible implementation, the at least two connecting conductors include a parallel connecting conductor and a series connecting conductor, the length of the parallel connecting conductor is equal to the distance between the first connecting part of the first static contact and the first connecting part of the third static contact, and is also equal to the distance between the first connecting part of the second static contact and the first connecting part of the fourth static contact; the length of the series connecting conductor is equal to the distance between the first connecting part of the second static contact and the first connecting part of the third static contact, and is also equal to the distance between the first connecting part of the first static contact and the first connecting part of the fourth static contact; and the length of the parallel connecting conductor is not equal to the length of the series connecting conductor.

[0024] In a possible implementation, the plurality of switch devices are stacked along the thickness direction of the shell, and the plurality of rocker arms are fixedly installed with the same linkage, and the linkage drives the plurality of rocker arms to synchronously act.

[0025] In a possible implementation, the operation part of the rocker arm is provided with a fourth through hole penetrating in the thickness direction of the shell, the linkage is a fixed shaft penetrating through the fourth through holes on the plurality of rocker arms, or the linkage is a mounting member, and the operation parts of the plurality of rocker arms are at least partially mounted on the mounting member, and the mounting member is clamped with the operation parts of the plurality of rocker arms.

[0026] Compared with the prior art, the switch device provided by the application includes a rocker arm, a reset member, a contact support, a counterforce member, a movable contact and a static contact, the reset member is connected with the rocker arm to drive the rocker arm to rotate, the contact support is connected with the counterforce member to drive the contact support to slide along a straight line, the contact support is obliquely arranged in the shell, the movable contact is arranged on the contact support, and the static contact is arranged on the shell, the movable contact contacts or separates from the static contact by following the sliding of the contact support, an external force is applied to the operation part of the rocker arm, the rocker arm rotates in the opposite direction by overcoming the force of the reset member, the driving part of the rocker arm releases the limiting of the contact support, the counterforce member drives the contact support to slide along the straight line to the direction close to the rocker arm, so that the movable contact is disconnected or connected with the static contact, or the driving part of the rocker arm drives the contact support to slide along the straight line to the direction away from the rocker arm, so that the movable contact is disconnected or connected with the static contact, the contact support of the utility model is obliquely arranged in the shell of the switch device, and the oblique arrangement of the contact support can utilize the space in the shell to the greatest extent, which is beneficial to installing more movable contacts and static contacts or enlarging the contact opening distance, improving the electrical clearance distance and safety.

[0027] Further, the shell is a rectangular structure including two opposite mounting surfaces and four side surfaces, the contact support is located between the two mounting surfaces, the first sliding groove and the first sliding rail are arranged on the contact support and the mounting surface respectively, the included angle between the first sliding groove or the first sliding rail and any of the side surfaces is an acute angle, the cooperation of the first sliding groove and the first sliding rail enables the contact support to be mounted on the two mounting surfaces, the movement track of the contact support can be locked, the contact support can slide along a straight line, and the position deviation of the contact support during sliding can be prevented.

[0028] Further, the rocker arm has strong initial kinetic energy when rotating and closing under the action of the reset member, and the buffer member can prevent the rocker arm or the contact support from colliding with the shell and causing wear or damage of parts. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is the appearance schematic view of the switch device of the utility model;

[0030] Figure 2 is the explosion view of the switch device of the utility model;

[0031] Figure 3 is the structural schematic view of the switch device of the utility model after removing the surface cover;

[0032] Figures 4-6 is the structural schematic view of the contact support in the switch device of the utility model;

[0033] Figure 7 is the structural schematic view of the rocker arm of the utility model;

[0034] The reference signs include: the contact support 1, the movable contact 2, the static contact 3, the shell 4, the rocker arm 5, the reset member 6, the first through hole 41, the counterforce member 13, the limiting member 44, the first sliding groove 14, the first sliding rail 15, the first static contact 31, the second static contact 32, the third static contact 33, the fourth static contact 34, the buffer member 42, the first force arm 51, the second force arm 52, the stress part 11, the counterforce part 12, the counterforce member 13, the first recess 16, the mounting boss 53, the first clamping groove 54, the first blocking table 43, the second blocking table 56, the stress plate 17, the contact hole 18, the movable contact point 21, the static contact point 35, the surface cover 45, the base 46, the third through hole 47 and the mounting plate 48. DETAILED DESCRIPTION

[0035] The embodiments given below in combination with the drawings further illustrate the specific implementation manners of the utility model. The protection scope of the utility model is not limited to the description of the following embodiments.

[0036] As Figures 1-6As shown, the application provides a switch device, comprising a driving mechanism, a contact support 1, a movable contact 2, a fixed contact 3 and a housing 4, the driving mechanism, the contact support 1, the movable contact 2 and the fixed contact 3 are installed in the housing 4, the driving mechanism comprises a rocker arm 5 and a reset member 6.

[0037] The housing 4 is provided with a first through hole 41, the rocker arm 5 is rotationally arranged, the reset member 6 is connected with the rocker arm 5 and has potential energy to drive the rocker arm 5 to rotate, the contact support 1 is linearly slidably arranged, a counterforce member 13 is connected with the contact support 1 and has potential energy to drive the contact support 1 to linearly slide, the fixed contact 3 is fixedly installed on the housing 4, and the movable contact 2 is installed on the contact support 1 and contacts or breaks away from the fixed contact 3 along with the sliding of the contact support 1.

[0038] One end of the rocker arm 5 is an operating part, and the other end is a driving part, the operating part extends out of the first through hole 41, and the driving part cooperates with the contact support 1, an external force is applied to the operating part of the rocker arm 5, the rocker arm 5 overcomes the force of the reset member 6 and rotates in the opposite direction, the contact support 1 linearly slides under the cooperation of the driving part of the rocker arm 5 and the counterforce member 13, and the movable contact 2 contacts or breaks away from the fixed contact 3, that is, the switch device switches between the closed and open states.

[0039] For example, when the operating part of the rocker arm 5 is not subjected to an external force, the driving part abuts against the contact support 1, and the movable contact 2 contacts or breaks away from the fixed contact 3, an external force is applied to the operating part of the rocker arm 5, the operating part at least partially extends into the first through hole 41, the rocker arm 5 overcomes the force of the reset member 6 and rotates in the opposite direction. An external force is applied to the operating part of the rocker arm 5, the driving part of the rocker arm 5 releases the limit of the contact support 1, the counterforce member 13 drives the contact support 1 to linearly slide towards the rocker arm 5, and the movable contact 2 contacts or breaks away from the fixed contact 3; or an external force is applied to the operating part of the rocker arm 5, the driving part of the rocker arm 5 drives the contact support 1 to linearly slide away from the rocker arm 5, the counterforce member 13 is compressed, and the movable contact 2 contacts or breaks away from the fixed contact 3.

[0040] For example, when the operating part of the rocker arm 5 is not subjected to an external force, the driving part abuts against the contact support 1, and the movable contact 2 contacts or breaks away from the fixed contact 3, an external force is applied to the operating part of the rocker arm 5, the operating part at least partially extends into the first through hole 41, the rocker arm 5 overcomes the force of the reset member 6 and rotates in the opposite direction. An external force is applied to the operating part of the rocker arm 5, the driving part of the rocker arm 5 releases the limit of the contact support 1, the counterforce member 13 drives the contact support 1 to linearly slide towards the rocker arm 5, and the movable contact 2 contacts or breaks away from the fixed contact 3; or an external force is applied to the operating part of the rocker arm 5, the driving part of the rocker arm 5 drives the contact support 1 to linearly slide away from the rocker arm 5, the counterforce member 13 is compressed, and the movable contact 2 contacts or breaks away from the fixed contact 3. Figure 2 and Figure 3As shown, the contact support 1 is obliquely arranged inside the housing 4, which is in a rectangular structure. After the contact support 1 is obliquely arranged, the movement track of the contact support 1 is a straight line, and the contact support 1 reciprocates along the oblique straight line. The oblique arrangement of the contact support 1 can make better use of the space inside the housing 4, which is conducive to installing more moving contacts 2 and static contacts 3 or enlarging the contact opening distance, improving the electrical clearance distance and safety. The "contact opening distance" refers to the minimum distance between the moving contact 2 and the static contact 3 when the switch is in the open position. Preferably, the straight line movement track of the contact support 1 is at an acute angle with the side of the housing 4 provided with the first through hole 41. Further, the straight line movement track of the contact support 1 coincides with the diagonal line of the rectangular structure of the housing 4, that is, the contact support 1 reciprocates along the diagonal line of the housing 4.

[0041] Specifically, in one possible embodiment, when the operating part of the rocker arm 5 is not subjected to external force, the moving contact 2 and the static contact 3 are in a contact state (i.e., in a normally closed state). When the operating part of the rocker arm 5 is subjected to external force and rotates, the moving contact 2 and the static contact 3 are disconnected. In this embodiment, the moving contact 2 and the static contact 3 have two position structures inside the housing 4. First, when the torque provided by the counterforce member 13 to the rocker arm 5 is less than the torque provided by the reset member 6 to the rocker arm 5 (i.e., in this embodiment), the position of the moving contact 2 in the housing 4 is closer to the rocker arm 5 than that of the static contact 3. The external force is applied to the operating part to make the rocker arm 5 rotate, and the rocker arm 5 releases the limit of the contact support 1. Under the action of the counterforce member 13, the contact support 1 slides towards the rocker arm 5, so that the static contact 3 and the moving contact 2 are disconnected. Second, when the torque provided by the counterforce member 13 to the rocker arm 5 is greater than the torque provided by the reset member 6 to the rocker arm 5, the position of the static contact 3 in the housing 4 is closer to the rocker arm 5 than that of the moving contact 2. The external force is applied to the operating part to make the rocker arm 5 rotate, and the rocker arm 5 drives the contact support 1 to slide away from the rocker arm 5, so that the static contact 3 and the moving contact 2 are disconnected.

[0042] In another possible embodiment, when the operating part of the rocker arm 5 is not subjected to external force, the moving contact 2 and the stationary contact 3 are in an open state (i.e., in a normally open state). When the operating part of the rocker arm 5 is subjected to external force and rotates, the moving contact 2 and the stationary contact 3 come into contact. In this embodiment, the moving contact 2 and the stationary contact 3 also have two positional structures inside the housing 4. First, when the torque provided to the rocker arm 5 by the reaction member 13 is less than the torque provided to the rocker arm 5 by the reset member 6, the operating part of the rocker arm 5 is not subjected to external force, and the position of the stationary contact 3 inside the housing 4 is closer to the rocker arm 5 than the moving contact 2. The driving part of the rocker arm 5 abuts against one end of the contact support 1, causing the other end of the contact support 1 to abut against the inner wall of the housing 4, limiting the contact support 1. An external force is applied to the operating part, causing the rocker arm 5 to rotate. The rocker arm 5 releases the limiting of the contact support 1, and the contact support 1 slides towards the rocker arm 5 under the action of the reaction member 13, causing the moving contact 2 and the stationary contact 3 to come into contact. In the second scenario, when the torque provided by the reaction member 13 to the rocker arm 5 is greater than the torque provided by the reset member 6 to the rocker arm 5, the operating part of the rocker arm 5 is not subject to external force. The position of the moving contact 2 within the housing 4 is closer to the rocker arm 5 than that of the stationary contact 3. The contact support 1 can be limited by the limiting member 44 provided on the housing. An external force is applied to the operating part, causing the rocker arm 5 to rotate. The rocker arm 5 drives the contact support 1 to slide away from the rocker arm 5, so that the stationary contact 3 contacts the moving contact 2.

[0043] like Figure 3 In the illustrated embodiment, when the operating part of the rocker arm 5 is not subjected to external force, the moving contact 2 and the stationary contact 3 are in contact (i.e., in a normally closed state). When the operating part of the rocker arm 5 is subjected to external force and rotates, the moving contact 2 and the stationary contact 3 are disconnected. The torque provided to the rocker arm 5 by the reaction force member 13 is less than the torque provided to the rocker arm 5 by the reset member 6. The position of the moving contact 2 in the housing 4 is closer to the rocker arm 5 than that of the stationary contact 3. An external force is applied to the operating part to make the rocker arm 5 rotate. The rocker arm 5 releases the limit on the contact support 1. Under the action of the reaction force member 13, the contact support 1 slides towards the rocker arm 5, causing the stationary contact 3 and the moving contact 2 to disconnect.

[0044] Furthermore, such as Figure 2 and Figure 4 As shown, the housing 4 includes four sides and two opposing mounting surfaces. One side is provided with the first through hole 41. The contact support 1 is disposed between the two mounting surfaces. Two first slide rails 15 are disposed opposite each other on the two mounting surfaces. Two first slide grooves 14 are disposed on the contact support 1. Alternatively, two first slide grooves 14 are disposed opposite each other on the two mounting surfaces. Two first slide rails 15 are disposed on the contact support 1. The two first slide grooves 14 and the two first slide rails 15 are installed in corresponding fit. The included angle between the first slide groove 14 and any of the sides is an acute angle.

[0045] Furthermore, such as Figure 2As shown, the shell 4 is a rectangular structure including two opposite mounting surfaces and four side surfaces, the contact support 1 is located between the two mounting surfaces, the first sliding groove 14 and the first sliding rail 15 are arranged on the contact support 1 and the mounting surface respectively, the included angle between the first sliding groove 14 or the first sliding rail 15 and any of the side surfaces is an acute angle, the cooperation of the first sliding groove 14 and the first sliding rail 15 enables the contact support 1 to be mounted on the two mounting surfaces, the movement track of the contact support 1 can be locked, the contact support 1 can slide along a straight line, and the position of the contact support 1 can be prevented from deviating during sliding.

[0046] Further, as shown in the drawings, Figure 4 Further, when the first sliding rail 15 is arranged on the contact support 1 and the first sliding groove 14 is arranged on the shell 4, the first sliding rail 15 can be arranged through the contact support 1 or can be partially arranged in the middle of the contact support 1, and the length of the first sliding rail 15 can maintain the balance of the contact support 1, which all belong to the protection scope of the present application.

[0047] Preferably, when the shell 4 is a square structure, the included angle between the movement track of the contact support 1 and the edge of the shell 4 is 45°, and the maximum opening distance between the moving contact 2 and the static contact 3.

[0048] Preferably, as shown in the drawings, Figure 1 Preferably, at least two static contacts 3 extend from one of the two opposite mounting surfaces in the thickness direction of the shell 4.

[0049] Preferably, as shown in the drawings, Figures 2-3 In the embodiment, the switch device includes two parallel moving contacts 2 and four static contacts 3 arranged at intervals, for example, the four static contacts 3 include a first static contact 31, a second static contact 32, a third static contact 33 and a fourth static contact 34, two moving contact portions are arranged at the two ends of one moving contact 2, the two moving contact portions correspond to two static contacts 3 respectively, the first static contact 31 and the second static contact 32 correspond to the two moving contact portions of one moving contact 2, and form a first group of breaking points, the third static contact 33 and the fourth static contact 34 correspond to the two moving contact portions of one moving contact 2, and form a second group of breaking points. The static contact 3 includes a first wiring portion and / or a second wiring portion, the first wiring portion of at least two static contacts 3 extends from one of the two opposite mounting surfaces in the thickness direction of the shell 4, and / or the second wiring portion is arranged inside the shell 4.

[0050] As shown in the drawings, Figures 1-7 In the embodiment, the first wiring portion of the four static contacts 3 extends out of the shell 4, and is used to change the wiring mode outside. The user can adjust the connection mode of the two groups of breaking points according to needs.

[0051] The first connecting part of the first static contact 31 and the first connecting part of the third static contact 33 are connected and connected as the incoming line end or outgoing line end in the line, and the first connecting part of the second static contact 32 and the first connecting part of the fourth static contact 34 are connected and connected as the outgoing line end or incoming line end in the line, which can realize parallel connection;

[0052] One of the first connecting part of the first static contact 31 and the first connecting part of the fourth static contact 34 is connected as the incoming line end, and the other is connected as the outgoing line end, and the first connecting part of the second static contact 32 and the first connecting part of the third static contact 33 are connected or one of the first connecting part of the second static contact 32 and the first connecting part of the third static contact 33 is connected as the incoming line end, and the other is connected as the outgoing line end, and the first connecting part of the first static contact 31 and the first connecting part of the fourth static contact 34 are connected, which can realize series connection.

[0053] The first connecting part of the first static contact 31 and the first connecting part of the second static contact 32 are respectively connected as the incoming line end and outgoing line end of one line, and the first connecting part of the third static contact 33 and the first connecting part of the fourth static contact 34 are respectively connected as the incoming line end and outgoing line end of the other line, which can be respectively connected in two different lines and respectively control two different lines, realizing the mode of multiple groups of independent control connection.

[0054] In one embodiment, the first connecting part of two static contacts 3 of the four static contacts 3 extends out of the shell 4, for example, the first static contact 31 and the third static contact 33 are connected inside the shell 4, the first connecting part of the first static contact 31 or the first connecting part of the third static contact 33 extends out of the shell 4, the second static contact 32 and the fourth static contact 34 are connected inside the shell 4, and the first connecting part of the second static contact 32 or the first connecting part of the fourth static contact 34 extends out of the shell 4, which can realize parallel connection.

[0055] Alternatively, the first static contact 31 and the fourth static contact 34 are connected inside the shell 4, and the first connecting part of the third static contact 33 and the first connecting part of the second static contact 32 extend out of the shell 4 and are respectively connected as the incoming line end and the outgoing line end; or the second static contact 32 and the third static contact 33 are connected inside the shell 4, and the first connecting part of the first static contact 31 and the first connecting part of the fourth static contact 34 extend out of the shell 4 and are respectively connected as the incoming line end and the outgoing line end, which can realize series connection.

[0056] When the first connecting part of the static contact 3 is arranged inside the shell 4, the second connecting part is not arranged, and when the first connecting part of the static contact 3 is arranged outside the shell 4, the second connecting part can be arranged on the static contact 3, which is used for connecting the static contact 3 with the static contact 3 inside the shell 4, that is, adjusting the connection mode of the two groups of breakpoints inside the shell 4. The first connecting part can be Figure 1The second connecting part can be a through hole formed on the fixed contact 3.

[0057] The two fixed contacts 3 can be fixed on the two fixed contacts 3 by welding or riveting, or can be fixed by punching holes on the two fixed contacts 3.

[0058] Similarly, the two ends of the connecting conductor can be fixed on the first connecting part of the two fixed contacts 3 by welding or riveting, or can be fixed by winding the wire on the first connecting part.

[0059] In a more preferred embodiment, a connecting conductor is provided for connecting between the first connecting parts of the two fixed contacts 3, and the two ends of the connecting conductor are inserted into the first connecting parts. The two ends of the connecting conductor are provided with buckles which are inserted into the first connecting parts, so that the wiring mode of the switch device can be changed more quickly. Preferably, the connecting conductor can include a plurality of different lengths and types which are matched with the switch device, so that the installation, disassembly, convenience, simplicity and speed are improved, and the space occupied by the switch device is reduced. For example, a parallel connecting conductor is provided, the length of which is equal to the distance between the first connecting part of the first fixed contact 31 and the first connecting part of the third fixed contact 33, and is also equal to the distance between the first connecting part of the second fixed contact 32 and the first connecting part of the fourth fixed contact 34; a series connecting conductor is also provided, the length of which is equal to the distance between the first connecting part of the second fixed contact 32 and the first connecting part of the third fixed contact 33, and is also equal to the distance between the first connecting part of the first fixed contact 31 and the first connecting part of the fourth fixed contact 34. The length of the parallel connecting conductor is not equal to the length of the series connecting conductor, so that the installation is convenient and the error is not used. Preferably, the parallel connecting conductor and the series connecting conductor are both hard conductive sheets which are integrally formed with the respective buckles.

[0060] The connecting conductor can be a soft wire, and the two ends of the wire are welded or riveted with two buckles, and the wire is wrapped with an insulating rubber on the outside to improve safety and achieve soft connection between the first connecting parts of the two fixed contacts 3; or the connecting conductor is a hard conductive sheet, and the conductive sheet is wrapped with an insulating rubber on the outside, and the two ends of the conductive sheet are welded or riveted with the buckles or integrally formed with the buckles to achieve hard connection between the first connecting parts.

[0061] The wiring mode of the present application is not limited to the above several kinds, but can also be a combination of the above three wiring modes, or other wiring modes, which are not listed one by one.

[0062] Preferably, in one possible implementation, the switch device of the present application can be modularly spliced, a plurality of switch devices can be installed in a stacked manner along the thickness direction of the shell 4, at least two static contacts 3 can protrude from the two narrower side portions of the shell 4, and the switch device is provided with at least one first buckle and at least one third slot on the two faces opposite to each other along the thickness direction of the shell 4, which can be fixed by cooperation. The plurality of switch devices can be installed by buckling through the first buckles and the third slots.

[0063] Further, when the plurality of switch devices are modularly installed, the plurality of rocker arms 5 are fixedly installed with the same linkage, the linkage drives the plurality of rocker arms 5 to move synchronously, and simultaneously controls the circuit closure or disconnection of the plurality of switch devices.

[0064] Further, the operation portion of the rocker arm 5 is provided with a fourth through hole in the thickness direction of the shell 4, the linkage is a fixed shaft which passes through the fourth through holes on the plurality of rocker arms 5, or the linkage is a mounting member, and the operation portion of the plurality of rocker arms 5 is at least partially mounted on the mounting member, and the mounting member is in clamping connection with the operation portion of the plurality of rocker arms 5.

[0065] Preferably, as shown in Figure 2 and Figure 3 The shell 4 is provided with a buffer 42, in one embodiment, the buffer 42 is arranged close to the rocker arm 5 and is in abutment with the rocker arm 5, and in another embodiment, the buffer 42 is arranged close to the contact support 1 and is in abutment with the contact support 1. When the rocker arm 5 rotates to close under the action of the reset member 6, it has strong initial kinetic energy, and the arrangement of the buffer 42 can avoid the rocker arm 5 or the contact support 1 from colliding with the shell 4, thereby avoiding the wear or damage of the parts.

[0066] Further, the buffer 42 is made of a material with elasticity, for example, but not limited to, silica gel, or the buffer 42 is mounted on the shell 4, and an elastic member is arranged between the buffer 42 and the shell 4, which can be a compression spring, a spring, a torsional spring, etc. When the buffer 42 collides with the rocker arm 5 or the contact support 1, the compression of the elastic member by the buffer 42 can play a role in relieving the impact force.

[0067] Preferably, as shown in Figure 3 and Figure 7 The rocker arm 5 includes a first force arm 51 and a second force arm 52, the first force arm 51 and the second force arm 52 are connected, the rotation axis of the rocker arm 5 is located at the connection between the first force arm 51 and the second force arm 52, the first force arm 51 includes the operation portion, the second force arm 52 includes the driving portion, one end of the reset member 6 is connected with the shell 4, and the other end is connected with the first force arm 51 or the second force arm 52. Among them, Figure 7Figure 1 is a structural schematic diagram of a rocker arm 5 in the utility model.

[0068] Preferably, as shown in Figure 3 The force receiving part 11 is in abutment with the driving part of the rocker arm 5, and the counterforce part 12 is in abutment with the housing 4, and a counterforce piece 13 is arranged between the counterforce part 12 and the housing 4, one end of the counterforce piece 13 is connected with the counterforce part 12, and the other end is connected with the inner wall of the housing 4.

[0069] Further, as shown in Figure 3 and Figure 6 A first recess 16 is arranged on the counterforce part 12 of the contact support 1, and the counterforce piece 13 is at least partially installed in the first recess 16, one end of the counterforce piece 13 is in abutment with the first recess 16, and the other end is in abutment with the inner wall of the housing 4. The counterforce piece 13 can be, but is not limited to, a compression spring or a spring.

[0070] Alternatively, in other possible embodiments, a first fixing part is arranged on the counterforce part 12 of the contact support 1, and a second fixing part is arranged on the inner wall of the housing 4, and the counterforce part 12 is installed on the first fixing part and the second fixing part. The first fixing part and the second fixing part can be a boss or a recess.

[0071] Preferably, the reset piece 6 can be a torsion spring or a tension spring, and in the embodiment of the utility model, the reset piece 6 is a torsion spring.

[0072] Further, as shown in Figure 2 and Figure 3 The reset piece 6 is a torsion spring, a mounting boss 53 is formed on the rotating shaft of the rocker arm 5, the middle part of the torsion spring is sleeved on the mounting boss 53 of the rocker arm 5, one end of the torsion spring is fixed with the second force arm 52 of the rocker arm 5, and the other end is installed on the housing 4.

[0073] Further, as shown in Figure 3 A first clamping groove 54 is arranged on one side of the second force arm 52 towards the first through hole 41, one end of the torsion spring is installed in the first clamping groove 54, a second clamping groove is arranged on the housing 4, the other end of the torsion spring is fixed in the second clamping groove, and preferably, a first stop boss 43 is arranged on the housing 4, and the other end of the torsion spring is limited by the first stop boss 43.

[0074] Further, as shown in Figure 3 An integral second stop boss 56 is arranged at the end of the second force arm 52 of the rocker arm 5, the second stop boss 56 is parallel to the second force arm 52, and the first clamping groove 54 is formed between the second stop boss 56 and the second force arm 52.

[0075] Further, as shown in Figure 2As shown, the housing 4 is provided with a limiting member 44, when the contact support 1 slides under the action of the counter-force member 13, the limiting member 44 limits the position of the contact support 1, so that the contact support 1 has a fixed range of movement trajectory. Further, the limiting member 44 corresponds to the force receiving part 11 of the contact support 1, when the switch is opened, the limiting member 44 abuts against the force receiving part 11 of the contact support 1. In the preferred embodiment of the application, since the force receiving part 11 also abuts against the end of the second force arm 52 of the rocker arm 5, the force receiving part 11 of the contact support 1 extends to the two sides along the vertical direction of the movement trajectory to form a force receiving plate 17, which is used to abut against the limiting member 44 to avoid the position conflict between the second force arm 52 and the limiting member 44.

[0076] Preferably, the torque provided by the counter-force member 13 to the rocker arm 5 is smaller than the torque provided by the reset member 6 to the rocker arm 5. The "torque" is a special moment of force that causes an object to rotate, which is the product of force and force arm, and the unit is N·m.

[0077] Further, as shown in Figure 2 , Figure 3 and Figure 7 , in the embodiment, the length of the second force arm 52 is greater than the length of the first force arm 51, and the force of the counter-force member 13 acting on the contact support 1 is smaller than the force of the reset member 6 acting on the rocker arm 5. The operation part of the first force arm 51 extends out of the first through hole 41, which is more beautiful, and the second force arm 52 can extend into the center of the housing 4, which provides a basis for enlarging the opening distance between the moving contact 2 and the static contact 3.

[0078] Alternatively, in a less preferred embodiment, the length of the second force arm 52 can be smaller than or equal to the length of the first force arm 51.

[0079] Preferably, one end of at least one moving contact 2 extends from one side of the contact support 1 and corresponds to at least one static contact 3 on the housing 4; or, two ends of at least one moving contact 2 extend from two sides of the contact support 1, and at least two static contacts 3 are arranged on the housing 4 in a spaced manner, and the at least two static contacts 3 correspond to the two ends of the at least one moving contact 2.

[0080] Further, the contact support 1 is provided with at least one contact hole 18, and a contact spring is arranged in each contact hole 18, and at least one moving contact 2 passes through the at least one contact hole 18 and is connected with the contact spring. The contact spring can be a compression spring or a tension spring, which can not only limit the position of the moving contact 2 on the contact support 1, but also can relieve the impact force when the moving contact 2 contacts the static contact 3.

[0081] Preferably, as shown in Figures 2-6As shown, at least one moving contact 2 extends from both sides of the contact support 1, and each end is provided with a moving contact portion. At least two stationary contacts 3 are spaced apart on the housing 4, and these stationary contacts 3 correspond to and cooperate with the moving contact portions at both ends of the at least one moving contact 2. The switching device may include multiple moving contacts 2 and their corresponding multiple stationary contacts 3. By coordinating multiple moving contacts 2 and multiple stationary contacts 3, multiple contacts can be arranged in parallel, providing more wiring options and enabling applications in more scenarios.

[0082] Furthermore, multiple moving contacts 2 are disposed on the contact support 1, and the multiple moving contacts 2 are arranged in a parallel manner.

[0083] Furthermore, the contact support 1 does not have a contact hole 18 and does not have a contact spring installed. At least one moving contact 2 passes through the contact support 1 and is fixed on the contact support 1. It can be integrally injection molded with the contact support 1. The two ends of the moving contact 2 extend from both sides of the contact support 1 and correspond to at least two stationary contacts 3 that are spaced apart on the housing 4.

[0084] Furthermore, such as Figure 5 As shown, in this embodiment, the contact support 1 has two contact holes 18, and two moving contacts 2 pass through the contact holes 18, with both ends extending out of the contact holes 18.

[0085] Furthermore, in other embodiments, the moving contact 2 may also be mounted on one side of the contact support 1, with both ends extending from both sides of the contact support 1.

[0086] Preferred, such as Figure 2 and Figure 6 As shown, the moving contact 2 has moving contact points 21 at both ends, and the stationary contact 3 has stationary contact points 35. Using moving contact points 21 and stationary contact points 35 can produce better contact and conductivity. Preferably, the moving contact 2, stationary contact 3, moving contact points 21 and stationary contact 3 can all be made of copper, but of course, it is not limited to other materials with conductive properties.

[0087] Preferred, such as Figure 1 , Figure 2 and Figure 3As shown in the figure, the shell 4 of the switch device comprises a face cover 45 and a base 46, the face cover 45 is covered on the base 46, the contact support 1, the counterforce 13 on the contact support 1, the rocker arm 5, the reset member 6 on the rocker arm 5, the static contact 3 and the buffer 42 are all arranged on the base 46, the face cover 45 is provided with a third through hole 47 corresponding to the position of the static contact 3, after the face cover 45 is covered on the base 46, the first wiring part of the static contact 3 can pass through the third through hole 47, after the first wiring part of the static contact 3 passes out of the third through hole 47, the first wiring part can be fixedly connected with an external conductor or the connecting conductor.

[0088] Further, as shown in the figure, Figure 1 and Figure 2 In the embodiment of the present application, four static contacts 3 are arranged on the base 46 in intervals, and four third through holes 47 corresponding to the positions of the four static contacts 3 are arranged on the face cover 45.

[0089] Preferably, as shown in the figure, Figure 1 on the shell 4, the side where the first through hole is located extends to two sides to form two mounting plates 48, the two mounting plates 48 are perpendicular to the two sides of the shell, and mounting holes are arranged on the mounting plates 48, screws can pass through the mounting holes to fix and install the switch device.

[0090] It should be noted that in the description of the present application, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in use, and are only for the convenience of description, and cannot be understood as indicating that the device or element referred to must have a specific orientation, therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used for differentiation in description, and cannot be understood as indicating relative importance.

[0091] The above is a further detailed description of the present application in combination with specific preferred embodiments, and cannot be considered as limiting the specific implementation of the present application to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, without departing from the concept of the present application, a number of simple deductions or substitutions can be made, all of which should be considered as falling within the protection scope of the present application.

Claims

1. A switch device comprising a housing (4) and a rocker arm (5), a reset member (6), a contact support (1), a counter-force member (13), a movable contact (2) and a stationary contact (3) arranged in the housing (4), the housing (4) being provided with a first through hole (41), the reset member (6) being connected with the rocker arm (5) to drive the rocker arm (5) to rotate, the counter-force member (13) being connected with the contact support (1) to drive the contact support (1) to slide linearly, the stationary contact (3) being mounted on the housing (4), the movable contact (2) being mounted on the contact support (1) and being in contact with or separated from the stationary contact (3) with the sliding of the contact support (1), characterized in that the rocker arm (5) comprises an operating portion and a driving portion, the operating portion extending out of the first through hole (41), the driving portion cooperating with the contact support (1), the contact support (1) being arranged obliquely in the housing (4), the linear motion track of the contact support (1) being at an acute angle with the side of the housing (4) provided with the first through hole (41), an external force being applied to the operating portion of the rocker arm (5) to drive the rocker arm (5) to rotate against the force of the reset member (6), the contact support (1) sliding linearly under the cooperation of the driving portion of the rocker arm (5) and the counter-force member (13) to separate or contact the movable contact (2) from the stationary contact (3). The housing (4) is of a rectangular structure, and the linear motion track of the contact support (1) coincides with the diagonal line of the rectangular structure of the housing (4).

2. The switching device of claim 1, wherein The housing (4) is of a rectangular structure comprising four sides and two opposite mounting surfaces, the contact support (1) being arranged between the two mounting surfaces, the first through hole (41) being provided on one side, two first sliding grooves (14) being oppositely provided on the two mounting surfaces, and two first sliding rails (15) being provided on the contact support (1); or, two first sliding rails (15) being oppositely provided on the two mounting surfaces, two first sliding grooves (14) being provided on the contact support (1), and the two first sliding grooves (14) and the two first sliding rails (15) being correspondingly and cooperatively mounted, the included angle between the first sliding groove (14) and any of the sides being an acute angle.

3. The switching device of claim 1, wherein The switch device comprises two parallel movable contacts (2) and four spaced stationary contacts (3), the four stationary contacts (3) comprising a first stationary contact (31), a second stationary contact (32), a third stationary contact (33) and a fourth stationary contact (34), the two ends of one movable contact (2) being provided with two movable contact portions, the first stationary contact (31) and the second stationary contact (32) corresponding to the two movable contact portions of one movable contact (2), the third stationary contact (33) and the fourth stationary contact (34) corresponding to the two movable contact portions of one movable contact (2), the stationary contact (3) comprising a first wiring portion, the first wiring portions of the four stationary contacts (3) partially extending out of one of the two opposite surfaces of the housing (4) in the thickness direction.

4. The switching device of claim 1, wherein ​ 5. The switching device of claim 4, wherein, The first connecting part of the first stationary contact (31) is connected with the first connecting part of the third stationary contact (33), and the first connecting part of the second stationary contact (32) is connected with the first connecting part of the fourth stationary contact (34), which are respectively used as the incoming line end and the outgoing line end; Alternatively, one of the first connecting part of the first stationary contact (31) and the first connecting part of the fourth stationary contact (34) is used as the incoming line end, and the other is used as the outgoing line end, the first connecting part of the second stationary contact (32) is connected with the first connecting part of the third stationary contact (33), or one of the first connecting part of the second stationary contact (32) and the first connecting part of the third stationary contact (33) is used as the incoming line end, and the other is used as the outgoing line end, the first connecting part of the first stationary contact (31) is connected with the first connecting part of the fourth stationary contact (34); Alternatively, the first connecting part of the first stationary contact (31) and the first connecting part of the second stationary contact (32) are respectively used as the incoming line end and the outgoing line end of one line, and the first connecting part of the third stationary contact (33) and the first connecting part of the fourth stationary contact (34) are used as the incoming line end and the outgoing line end of another line.

6. The switching device of claim 1, wherein The shell (4) is provided with a buffer (42) arranged at a position close to the rocker arm (5) and abutting against the rocker arm (5); or the buffer (42) is arranged at a position close to the contact support (1) and abutting against the contact support (1).

7. The switching device of claim 1, wherein The rocker arm (5) comprises a first force arm (51) and a second force arm (52), the first force arm (51) and the second force arm (52) are connected, the rotation axis of the rocker arm (5) is located at the connection between the first force arm (51) and the second force arm (52), the first force arm (51) comprises the operation part, the second force arm (52) comprises the driving part, one end of the reset member (6) is connected with the shell (4), and the other end is connected with the first force arm (51) or the second force arm (52).

8. The switching device of claim 1, wherein The contact support (1) has a force receiving part (11) at one end and a counterforce part (12) at the other end, and a counterforce member (13) is arranged between the counterforce part (12) and the shell (4).

9. The switching device of claim 8, wherein The counterforce part (12) of the contact support (1) is provided with a first groove (16), and the counterforce member (13) is at least partially arranged in the first groove (16) and abuts against the first groove (16) at one end and abuts against the inner wall of the shell (4) at the other end.

10. The switching device of claim 1, wherein The torque provided by the counterforce member (13) to the rocker arm (5) is smaller than the torque provided by the reset member (6) to the rocker arm (5).

11. The switching device of claim 7, wherein The length of the second force arm (52) is greater than the length of the first force arm (51).

12. The switching device of claim 1, wherein One end of the at least one movable contact (2) extends from one side of the contact support (1) and abuts against the at least one stationary contact (3) on the shell (4); or both ends of the at least one movable contact (2) extend from both sides of the contact support (1), and the shell (4) is provided with at least two stationary contacts (3) arranged at intervals, and the at least two stationary contacts (3) abut against the both ends of the at least one movable contact (2).

13. The switching device of claim 1, wherein The shell (4) of the switch device comprises a cover (45) and a base (46), the cover (45) covers the base (46), the contact support (1), the counterforce (13), the rocker (5), the reset member (6) and the static contact (3) are arranged on the base (46), the cover (45) is provided with a third through hole (47) corresponding to the position of the static contact (3), and the static contact (3) partially passes through the third through hole (47).

14. The switching device of claim 5, wherein, The connecting conductor is connected between the first wiring parts of two static contacts (3), and the two ends of the connecting conductor are connected with the first wiring parts.

15. The switching device of claim 14, wherein, The connecting conductor includes at least two kinds of connecting conductors, which are parallel connecting conductors and series connecting conductors, respectively, the length of the parallel connecting conductor is equal to the distance between the first wiring part of the first static contact (31) and the first wiring part of the third static contact (33), and is also equal to the distance between the first wiring part of the second static contact (32) and the first wiring part of the fourth static contact (34); the length of the series connecting conductor is equal to the distance between the first wiring part of the second static contact (32) and the first wiring part of the third static contact (33), and is also equal to the distance between the first wiring part of the first static contact (31) and the first wiring part of the fourth static contact (34); the length of the parallel connecting conductor is not equal to the length of the series connecting conductor.

16. The switching device of claim 1, wherein A plurality of switch devices are stacked along the thickness direction of the shell (4), a plurality of rockers (5) are fixedly installed with the same linkage member, and the linkage member drives the plurality of rockers (5) to act synchronously.

17. The switching device of claim 16, wherein The operating part of the rocker (5) is provided with a fourth through hole penetrating along the thickness direction of the shell (4), the linkage member is a fixed shaft, and the fixed shaft passes through the fourth through holes on the plurality of rockers (5); or the linkage member is a mounting member, the operating part of the plurality of rockers (5) is at least partially mounted on the mounting member, and the mounting member is clamped with the operating part of the plurality of rockers (5).

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