Electromagnetic switch

Abstract

The utility model discloses an electromagnetic switch. The electromagnetic switch comprises a base; a first fixed conductive member; a second fixed conductive member; the movable conductive part can rotate leftwards and rightwards relative to the base; the rotating part can rotate leftwards and rightwards relative to the base, and a magnetic attraction sheet is fixed to the left side of the rotating part; the spring is arranged between the rotating piece and the movable conductive piece; the magnetic attraction assembly comprises a coil and a magnetic core; the first fixed conductive part and the second fixed conductive part are switched between the on state and the off state through the rotating part, the spring, the movable conductive part and the magnetic attraction assembly. According to the electromagnetic switch, after the rotating part is pressed down, the spring is bent and deformed to drive the movable conductive part to rotate, so that the first fixed conductive part and the second fixed conductive part are connected, and when power needs to be cut off, the first fixed conductive part and the second fixed conductive part are automatically disconnected by rebounding of the bent spring; when power is off, if the magnetic core has residual magnetism, the spring can overcome the attraction force of the residual magnetism to be normally disconnected, and the structure is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of control switches, in particular to an electromagnetic switch. Background Art

[0002] The working principle of the existing electromagnetic switch of the toaster is that after pressing the switch, a conducting component is moved to make the two connecting pieces conduct, the working circuit of the toaster is turned on, and at the same time, the electromagnet is energized to generate suction to attract the conducting component, so that the toaster keeps working; when it is necessary to end the work, the electromagnet is powered off and loses suction, the conducting component is reset, and the two connecting pieces are no longer energized. However, the existing electromagnetic switch has a complex structure, and if there is residual magnetism in the electromagnet when the power is turned off, the switch may not be able to turn off the power normally. Utility Model Content

[0003] The main purpose of the utility model is to provide an electromagnetic switch, aiming to solve the technical problems in the prior art that the electromagnetic switch has a complex structure and may not be able to normally cut off the power if there is residual magnetism in the electromagnet when the power is cut off.

[0004] In order to achieve the above object, the utility model provides an electromagnetic switch, comprising:

[0005] Pedestal;

[0006] A first fixed conductive member, which is fixed on the base;

[0007] A second fixed conductive member, which is fixed on the base, and the second fixed conductive member is spaced apart from the first fixed conductive member on the left and right;

[0008] A movable conductive member, which is disposed between the first fixed conductive member and the second fixed conductive member, the movable conductive member is movably connected to the base, the movable conductive member can rotate left and right relative to the base, and the left and right sides of the movable conductive member are respectively provided with a first power-connecting side and a second power-connecting side, the first power-connecting side is disposed at the lower side of the first fixed conductive member or the first power-connecting side is conductively connected to the first fixed conductive member, and the second power-connecting side is disposed at the upper side of the second fixed conductive member;

[0009] A rotating member, which is disposed on the upper side of the movable conductive member, the rotating member is rotatably connected to the base, the rotating member can rotate left and right relative to the base, and a magnetic attraction sheet is fixed on the left side of the rotating member;

[0010] A spring, which is arranged between the rotating member and the movable conductive member, the upper side of the spring is fixed to the rotating member, and the lower side of the spring is fixed to the movable conductive member;

[0011] A magnetic attraction component, comprising a coil and a magnetic core, wherein the coil and the magnetic core are both fixedly connected to the base, the magnetic attraction component is arranged on the left side of the base, and the magnetic core is arranged on the lower side of the magnetic attraction sheet;

[0012] The first fixed conductive member and the second fixed conductive member are switched between an on state and an off state by means of the rotating member, the spring, the movable conductive member and the magnetic attraction component, wherein:

[0013] In the conducting state, the rotating member rotates to the left, and the spring presents a curved shape with the middle portion convex to the right as the rotating member rotates and generates a rebound tendency, the lower side of the spring pushes the movable conductive member to rotate to the right, the second power-connected side rotates downward and abuts against the second fixed conductive member, and the first power-connected side abuts against the first fixed conductive member, so that the first fixed conductive member and the second fixed conductive member are conductive, and the coil can be energized after the first fixed conductive member and the second fixed conductive member are conductive, and the magnetic core generates a magnetic attraction force to attract the magnetic attraction sheet and overcome the rebound tendency of the spring;

[0014] In the disconnected state, the spring can rebound toward the straightened state after the coil is powered off, the upper side of the spring drives the rotating part to rotate to the right, and at the same time the lower side of the spring drives the movable conductive part to rotate to the left, the second power-connected side rotates upward and separates from the second fixed conductive part, so that the first fixed conductive part is disconnected from the second fixed conductive part.

[0015] The first fixed conductive member and the second fixed conductive member are respectively connected to an external circuit. When the first fixed conductive member is disconnected from the second fixed conductive member, the external circuit is disconnected and does not work. When the first fixed conductive member is connected to the second fixed conductive member, the external circuit is connected and works.

[0016] When work is needed, the left side of the rotating part is pressed, and the magnetic sheet sticks to the magnetic core of the magnetic assembly. At the same time, the upper side of the spring tilts to the right under the driving force of the rotating part, and the lower side of the spring is limited by the position of the movable conductive part to move the movable conductive part to rotate to the right, so that the second power-connected side of the movable conductive part contacts the second fixed conductive part, and the first power-connected side also contacts the second fixed conductive part, so that the first fixed conductive part and the second fixed conductive part are connected to the circuit and start working. The connection between the first fixed conductive part and the second fixed conductive part energizes the coil, and the magnetic core generates magnetic force to attract the magnetic sheet. After releasing the hand, it can keep working. At this time, the spring forms a shape with a rightward bend in the middle and has a rebound tendency.

[0017] When it is necessary to stop working, the coil stops energizing so that the magnetic sheet loses its magnetic attraction, and then the spring rebounds toward a straightened state. During the rebound process, the upper side of the spring drives the rotating part to rotate to the right, and at the same time, the lower side of the spring drives the movable conductive part to rotate to the left, so that the first fixed conductive part is disconnected from the second fixed conductive part, so that the external circuit is powered off and stops working, and the movable conductive part remains out of contact with the second fixed conductive part under the action of the spring.

[0018] The electromagnetic switch is configured such that after pressing the rotating part, the spring bends and deforms to drive the movable conductive part to rotate so that the first fixed conductive part and the second fixed conductive part are connected to each other. When power needs to be cut off, the first fixed conductive part and the second fixed conductive part are automatically disconnected by relying on the rebound of the bent spring. When the power is cut off, if there is residual magnetism in the magnetic core, the spring can also overcome the attraction of the residual magnetism and disconnect normally. The structure is relatively simple.

[0019] Preferably, the electromagnetic switch further comprises an insulating connection seat, the movable conductive member is fixedly connected to the insulating connection seat, and the lower side of the spring is fixed to the upper side of the insulating connection seat.

[0020] The lower side of the spring is connected to the insulating connection seat, and the spring drives the movable conductive part to rotate through the insulating connection seat.

[0021] Preferably, a first connecting column or a first connecting hole is provided on the lower side of the rotating member, and the upper side of the spring is sleeved outside the first connecting column or inserted into the first connecting hole; a second connecting column or a second connecting hole is provided on the upper side of the insulating connecting seat, and the lower side of the spring is sleeved outside the second connecting column or inserted into the second connecting hole.

[0022] A section of the upper side of the spring is sleeved outside the first connecting column or inserted into the first connecting hole, and a section of the lower side of the spring is sleeved outside the second connecting column or inserted into the second connecting hole. The upper and lower sides of the spring can be positioned, and the torque transmission force between the spring and the rotating part and the movable conductive part can be better formed.

[0023] Preferably, the first connecting column or the first connecting hole is arranged on the lower side of the rotational connection position of the rotating member and the base, and in the on state, the first connecting column or the first connecting hole is inclined to the lower right side, and in the off state, the first connecting column or the first connecting hole is inclined to the lower left side; the second connecting column or the second connecting hole is arranged on the upper left side of the rotational connection position of the movable conductive member and the base, and in the on state, the second connecting column or the second connecting hole is inclined to the upper right side, and in the off state, the second connecting column or the second connecting hole is inclined to the upper left side.

[0024] Preferably, the first fixed conductive member includes a connecting plate whose normal extends in the left-right direction, and a connecting groove opening upward is provided on the connecting plate. The insulating connecting seat and the movable conductive member are clamped in the connecting groove to achieve relative rotation with the base, and the movable conductive member abuts against the bottom of the connecting groove, and the side of the movable conductive member abutting against the connecting groove is the first power connection side.

[0025] Preferably, the first fixed conductive member comprises a connecting plate with a normal line extending in the left-right direction, the connecting plate is provided with a connecting groove with an opening facing upward, the insulating connecting seat and the movable conductive member are clamped in the connecting groove to realize relative rotation with the base, the first power connection side is provided with a first movable contact, the second power connection side is provided with a second movable contact, the first movable contact is provided on the left side of the connecting groove, and the second movable contact is provided on the right side of the connecting groove;

[0026] The insulating connection seat is in contact with the bottom of the connection groove, the movable conductive member is isolated from the connection groove, the first movable contact rotates upward and contacts the first fixed conductive member, the second movable contact rotates downward and contacts the second fixed conductive member in the conducting state, and the first movable contact rotates downward and separates from the first fixed conductive member, the second movable contact rotates upward and separates from the second fixed conductive member in the disconnecting state;

[0027] Alternatively, the movable conductive member abuts against the bottom of the connecting groove.

[0028] Preferably, one of the first fixed conductive parts, one of the second fixed conductive parts and one of the movable conductive parts form a group of conductive components, the electromagnetic switch includes two groups of the conductive components, the two groups of the conductive components are arranged with a front-to-back interval, the two groups of the conductive components are insulated from each other, the two movable conductive parts are fixed on the insulating connecting seat, and the number of the spring is one.

[0029] The two movable conductive parts of the two groups of conductive components are fixed on the insulating connecting seat. The insulating connecting seat is driven to rotate by a spring to drive the two movable conductive parts to move, thereby realizing the connection and disconnection of the two groups of conductive components, reducing the number of parts and making the structure simpler.

[0030] Preferably, a limit block is provided on the base, the limit block is provided on the right side of the spring, the limit block is provided on the lower side of the right side of the rotating member, the limit block is provided corresponding to the position of the rotating member, and the limit block is used to limit the rotation angle of the rotating member to the right side in the disconnected state.

[0031] Preferably, the magnetic core is in a U-shape with an opening facing upward, and the magnetic core includes two core legs. The coil is sleeved outside one of the core legs, and the two core legs are matched with the magnetic attraction sheet. When the coil is energized, the two core legs of the U-shaped magnetic core generate magnetic force to attract the magnetic attraction sheet, thereby increasing the suction force on the magnetic attraction sheet, and can more stably overcome the rebound tendency of the spring to maintain the conductive state.

[0032] Preferably, the electromagnetic switch further comprises a control board, the control board is fixedly connected to the base, and the control board is electrically connected to the coil. The control board is integrated on the electromagnetic switch, which is more cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0034] Figure 1 It is a schematic diagram of the structure of the utility model;

[0035] Figure 2 It is a structural schematic diagram of the utility model from another angle;

[0036] Figure 3 It is a schematic diagram of the exploded structure of the utility model;

[0037] Figure 4 It is a schematic diagram of the internal structure of the utility model when it is in the conducting state;

[0038] Figure 5 It is a schematic diagram of the internal structure of the utility model in the disconnected state;

[0039] Figure 6 It is a structural schematic diagram of the rotating part of the utility model;

[0040] Figure 7 This is a structural schematic diagram of a first fixed conductive member of the utility model;

[0041] Figure 8 It is a structural schematic diagram of another first fixed conductive member of the utility model;

[0042] Fig. 9 It is a structural schematic diagram of the movable conductive member and the insulating connecting seat of the utility model.

[0043] In the accompanying drawings: 1-base, 11-limiting block, 2-first fixed conductive part, 21-connecting plate, 211-connecting groove, 22-first fixed contact, 3-second fixed conductive part, 31-second fixed contact, 4-movable conductive part, 41-first power connection side, 411-first movable contact, 42-second power connection side, 421-second movable contact, 5-rotating part, 51-magnetic sheet, 52-first connecting hole, 53-rotating shaft, 6-spring, 7-magnetic attraction assembly, 71-coil, 72-magnetic core, 721-core leg, 8-insulating connecting seat, 81-second connecting column, 82-card slot, 9-control board.

[0044] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0046] It should be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of technical personnel in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0048] like Figures 1 to 9 As shown, an electromagnetic switch includes a base 1, a first fixed conductive member 2, a second fixed conductive member 3, a movable conductive member 4, a rotating member 5, a spring 6 and a magnetic attraction component 7.

[0049] The first fixed conductive member 2 is fixed on the base 1 , and the second fixed conductive member 3 is fixed on the base 1 . The second fixed conductive member 3 is spaced apart from the first fixed conductive member 2 on the left and right.

[0050] The movable conductive member 4 is arranged between the first fixed conductive member 2 and the second fixed conductive member 3, the movable conductive member 4 is movably connected to the base 1, and the movable conductive member 4 can rotate left and right relative to the base 1. The left and right sides of the movable conductive member 4 are respectively provided with a first power connection side 41 and a second power connection side 42, the first power connection side 41 is arranged at the lower side of the first fixed conductive member 2 or the first power connection side 41 is conductively connected to the first fixed conductive member 2, and the second power connection side 42 is arranged at the upper side of the second fixed conductive member 3.

[0051] The rotating member 5 is arranged on the upper side of the movable conductive member 4. The rotating member 5 is rotatably connected to the base 1. The rotating member 5 can rotate left and right relative to the base 1. The rotating member 5 can be rotatably connected to the base 1 through a rotating shaft 53. The rotating shaft 53 extends along the front and rear directions. A magnetic sheet 51 is fixed on the left side of the rotating member 5. The magnetic sheet 51 can be an iron sheet.

[0052] The spring 6 is arranged between the rotating member 5 and the movable conductive member 4 , the upper side of the spring 6 is fixed to the rotating member 5 , and the lower side of the spring 6 is fixed to the movable conductive member 4 .

[0053] The magnetic attraction component 7 includes a coil 71 and a magnetic core 72, both of which are fixedly connected to the base 1. The magnetic attraction component 7 is arranged on the left side of the base 1, and the magnetic core 72 is arranged on the lower side of the magnetic attraction sheet 51. When the coil 71 is energized, the magnetic core 72 can generate a magnetic attraction force to attract the magnetic attraction sheet 51.

[0054] The first fixed conductive member 2 and the second fixed conductive member 3 are switched between the on state and the off state by means of the rotating member 5, the spring 6, the movable conductive member 4 and the magnetic attraction component 7, wherein:

[0055] In the on state, refer to Figure 3 , the rotating member 5 rotates counterclockwise to the left, and the spring 6 is curved with the middle portion convex to the right as the rotating member 5 rotates and generates a rebound tendency. The lower side of the spring 6 drives the movable conductive member 4 to rotate to the right, and the second power-connecting side 42 rotates downward and abuts against the second fixed conductive member 3. The first power-connecting side 41 abuts against the first fixed conductive member 2, so that the first fixed conductive member 2 and the second fixed conductive member 3 are conductive. The coil 71 can be energized after the first fixed conductive member 2 and the second fixed conductive member 3 are conductive, and the magnetic core 72 generates a magnetic attraction force to attract the magnetic sheet 51 and overcome the rebound tendency of the spring 6;

[0056] In the disconnected state, refer to Figure 4The spring 6 can rebound toward the straightened state after the coil 71 is powered off. The upper side of the spring 6 drives the rotating member 5 to rotate clockwise to the right, and at the same time, the lower side of the spring 6 drives the movable conductive member 4 to rotate to the left. The second power-connecting side 42 rotates upward and separates from the second fixed conductive member 3, so that the first fixed conductive member 2 is disconnected from the second fixed conductive member 3.

[0057] The first fixed conductive member 2 and the second fixed conductive member 3 are respectively connected to the external circuit. When the first fixed conductive member 2 and the second fixed conductive member 3 are disconnected, the external circuit is disconnected and does not work. When the first fixed conductive member 2 and the second fixed conductive member 3 are connected, the external circuit is connected and works.

[0058] When it is necessary to work, press the left side of the rotating member 5, and the magnetic sheet 51 sticks to the magnetic core 72 of the magnetic assembly 7. Figure 3 At the same time, the upper side of the spring 6 is tilted to the right under the driving force of the rotation of the rotating member 5, and the lower side of the spring 6 is limited by the position of the movable conductive member 4 and moves the movable conductive member 4 to rotate to the right, so that the second power-connecting side 42 of the movable conductive member 4 contacts the second fixed conductive member 3, and the first power-connecting side 41 contacts the second fixed conductive member 3, so that the first fixed conductive member 2 and the second fixed conductive member 3 are connected to the circuit and start working. The conduction between the first fixed conductive member 2 and the second fixed conductive member 3 energizes the coil 71, and the magnetic core 72 generates magnetic force to attract the magnetic sheet 51, and it can keep working after releasing the hand. At this time, the spring 6 forms a shape with a rightward bending in the middle and has a rebound tendency;

[0059] When it is necessary to stop working, the coil 71 stops energizing so that the magnetic sheet 51 loses its magnetic attraction, and then the spring 6 rebounds toward the straight state. During the rebound process, the upper side of the spring 6 drives the rotating member 5 to rotate to the right, and at the same time, the lower side of the spring 6 drives the movable conductive member 4 to rotate to the left, so that the first fixed conductive member 2 is disconnected from the second fixed conductive member 3. Figure 4 , so that the external circuit is powered off and stops working, and the movable conductive member 4 is kept out of contact with the second fixed conductive member 3 under the action of the spring 6.

[0060] The electromagnetic switch presses the rotating part 5 to bend the spring 6 to drive the movable conductive part 4 to rotate so that the first fixed conductive part 2 and the second fixed conductive part 3 are connected. When the power needs to be cut off, the first fixed conductive part 2 and the second fixed conductive part 3 are automatically disconnected by the rebound of the bent spring 6. When the power is cut off, if there is residual magnetism in the magnetic core 72, the spring 6 can also overcome the attraction of the residual magnetism and disconnect normally. The structure is relatively simple.

[0061] In some specific embodiments, referring to Fig. 9 The electromagnetic switch also includes an insulating connection seat 8, the movable conductive member 4 is fixedly connected to the insulating connection seat 8, and the lower side of the spring 6 is fixed to the upper side of the insulating connection seat 8.

[0062] The lower side of the spring 6 is connected to the insulating connection seat 8 , and the spring 6 drives the movable conductive member 4 to rotate through the insulating connection seat 8 .

[0063] Further, refer to Figure 6 and Fig. 9 A first connecting column or a first connecting hole 52 is provided on the lower side of the rotating member 5, and the upper side of the spring 6 is sleeved outside the first connecting column or inserted into the first connecting hole 52; a second connecting column 81 or a second connecting hole is provided on the upper side of the insulating connecting seat 8, and the lower side of the spring 6 is sleeved outside the second connecting column 81 or inserted into the second connecting hole.

[0064] A section of the upper side of the spring 6 is sleeved outside the first connecting column or inserted into the first connecting hole 52, and a section of the lower side of the spring 6 is sleeved outside the second connecting column 81 or inserted into the second connecting hole. The upper and lower sides of the spring 6 can be positioned, and the torque transmission force between the spring 6 and the rotating part 5 and the movable conductive part 4 can be better formed.

[0065] Furthermore, the first connecting column or the first connecting hole 52 is arranged on the lower side of the rotational connection position of the rotating part 5 with the base 1, and is inclined to the lower right side in the conducting state, and is inclined to the lower left side in the disconnected state; the second connecting column 81 or the second connecting hole is arranged on the upper left side of the rotational connection position of the movable conductive part 4 with the base 1, and is inclined to the upper right side in the conducting state, and is inclined to the upper left side in the disconnected state.

[0066] The first connection column or the first connection hole 52 is arranged at the lower side of the rotation connection position of the rotating member 5 and the base 1, and the second connection column 81 or the second connection hole is arranged at the upper left side of the rotation connection position of the movable conductive member 4 and the base 1, so that the rotating member 5 can change the direction of the upper side of the spring 6 more quickly and at a larger angle when rotating, and the movable conductive member 4 and the spring 6 can better cooperate to realize the position switching of the movable conductive member 4 between the on state and the off state. The mutual connection positions of the rotating member 5, the spring 6 and the movable conductive member 4 can be adaptively adjusted according to the actual action effect.

[0067] In some specific embodiments, referring to Figure 7 and Figure 8 The first fixed conductive member 2 includes a connecting plate 21 whose normal line extends in the left-right direction, and a connecting groove 211 with an upward opening is provided on the connecting plate 21. The insulating connecting seat 8 and the movable conductive member 4 are clamped in the connecting groove 211 to achieve relative rotation with the base 1. Specifically, the insulating connecting seat 8 is provided with a clamping groove 82 extending in the up-down direction, and the two side parts of the connecting groove 211 of the connecting plate 21 are inserted into the clamping groove 82, and the connecting plate 21 can swing relatively left and right in the clamping groove 82.

[0068] There are at least two ways to connect the first power-connecting side 41 of the movable conductive member 4 to the first fixed conductive member 2:

[0069] Method 1: The movable conductive member 4 is located at the lower side of the insulating connection seat 8, and the movable conductive member 4 abuts against the bottom of the connection groove 211. The side of the movable conductive member 4 abutting against the connection groove 211 is the first power connection side 41. Figure 8 In this way, the movable conductive member 4 can maintain contact with the first fixed conductive member 2 at different rotation positions and can conduct electricity in the conducting state.

[0070] Method 2: Reference Figure 7 , the first power connection side 41 is provided with a first movable contact 411, the second power connection side 42 is provided with a second movable contact 421, the first movable contact 411 is provided on the left side of the connection slot 211, the second movable contact 421 is provided on the right side of the connection slot 211, the insulating connection seat 8 is in contact with the bottom of the connection slot 211, the movable conductive member 4 is isolated from the connection slot 211, in the conductive state, the first movable contact 411 rotates upward and contacts with the first fixed contact 22 of the first fixed conductive member 2, the second movable contact 421 rotates downward and contacts with the second fixed contact 31 of the second fixed conductive member 3, in the disconnected state, the first movable contact 411 rotates downward and separates from the first fixed conductive member 2, the second movable contact 421 rotates upward and separates from the second fixed conductive member 3. Alternatively, the movable conductive member 4 contacts with the bottom of the connection slot 211, and the movable conductive member 4 is provided with the first movable contact 411, and two positions of the movable conductive member 4 are conductive with the first fixed conductive member 2.

[0071] In some specific embodiments, referring to Fig. 9 A first fixed conductive part 2, a second fixed conductive part 3 and a movable conductive part 4 form a group of conductive components. The electromagnetic switch includes two groups of conductive components. The two groups of conductive components are arranged at intervals in front and behind. The two groups of conductive components are insulated from each other. The two movable conductive parts 4 are fixed on the insulating connecting seat 8, and the number of springs 6 is one.

[0072] The two movable conductive parts 4 of the two groups of conductive components are fixed on the insulating connecting seat 8. The insulating connecting seat 8 is driven to rotate by a spring 6 to drive the two movable conductive parts 4 to move, thereby realizing the connection and disconnection of the two groups of conductive components, reducing the number of parts and making the structure simpler.

[0073] In some specific embodiments, a limit block 11 is provided on the base 1, the limit block 11 is provided on the right side of the spring 6, the limit block 11 is provided on the lower side of the right side of the rotating member 5, the limit block 11 is provided corresponding to the position of the rotating member 5, and the limit block 11 is used to limit the rotation angle of the rotating member 5 to the right side in the disconnected state to prevent the rotating member 5 from rotating too much under the action of the spring 6.

[0074] In some specific embodiments, the magnetic core 72 is in a U-shape with an opening facing upward, and the magnetic core 72 includes two core legs 721. The coil 71 is sleeved outside one of the core legs 721, and the two core legs 721 are matched with the magnetic attraction sheet 51. When the coil 71 is energized, the two core legs 721 of the U-shaped magnetic core 72 generate magnetic force to attract the magnetic attraction sheet 51, thereby increasing the attraction force on the magnetic attraction sheet 51, and can more stably overcome the rebound tendency of the spring 6 to maintain the conductive state.

[0075] In some specific embodiments, referring to Figure 2 The electromagnetic switch further comprises a control board 9, which is fixedly connected to the base 1 and electrically connected to the coil 71. The control board can control the coil 71 to be disconnected, and the control board 9 is integrated on the electromagnetic switch, which is more cost-effective.

[0076] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An electromagnetic switch, characterized in that: include: Base (1); A first fixed conductive member (2) fixed on the base (1); A second fixed conductive member (3) fixed on the base (1), the second fixed conductive member (3) being arranged at a left-right interval with respect to the first fixed conductive member (2); A movable conductive member (4) is arranged between the first fixed conductive member (2) and the second fixed conductive member (3); the movable conductive member (4) is movably connected to the base (1); the movable conductive member (4) can rotate left and right relative to the base (1); the left and right sides of the movable conductive member (4) are respectively provided with a first power connection side (41) and a second power connection side (42); the first power connection side (41) is arranged at the lower side of the first fixed conductive member (2) or the first power connection side (41) is conductively connected to the first fixed conductive member (2); and the second power connection side (42) is arranged at the upper side of the second fixed conductive member (3); A rotating member (5) is arranged on the upper side of the movable conductive member (4); the rotating member (5) is rotatably connected to the base (1); the rotating member (5) can rotate left and right relative to the base (1); a magnetic attraction sheet (51) is fixed on the left side of the rotating member (5); a spring (6) disposed between the rotating member (5) and the movable conductive member (4), wherein the upper side of the spring (6) is fixed to the rotating member (5), and the lower side of the spring (6) is fixed to the movable conductive member (4); A magnetic attraction component (7), comprising a coil (71) and a magnetic core (72), wherein the coil (71) and the magnetic core (72) are both fixedly connected to the base (1), the magnetic attraction component (7) is arranged on the left side of the base (1), and the magnetic core (72) is arranged on the lower side of the magnetic attraction sheet (51); The first fixed conductive member (2) and the second fixed conductive member (3) are switched between an on state and an off state by means of the rotating member (5), the spring (6), the movable conductive member (4) and the magnetic attraction component (7), wherein: In the conducting state, the rotating member (5) rotates to the left, and the spring (6) presents a curved shape with the middle portion convex to the right as the rotating member (5) rotates and generates a rebound tendency. The lower side of the spring (6) drives the movable conductive member (4) to rotate to the right, and the second power-connecting side (42) rotates downward and abuts against the second fixed conductive member (3). The first power-connecting side (41) abuts against the first fixed conductive member (2), so that the first fixed conductive member (2) and the second fixed conductive member (3) are conductive to each other. The coil (71) can be energized after the first fixed conductive member (2) and the second fixed conductive member (3) are conductive to each other, and the magnetic core (72) generates a magnetic attraction force to attract the magnetic attraction sheet (51) and overcome the rebound tendency of the spring (6). In the disconnected state, the spring (6) can rebound toward a straightened state after the coil (71) is powered off, the upper side of the spring (6) drives the rotating member (5) to rotate to the right, and at the same time, the lower side of the spring (6) drives the movable conductive member (4) to rotate to the left, and the second power-connected side (42) rotates upward and separates from the second fixed conductive member (3), so that the first fixed conductive member (2) is disconnected from the second fixed conductive member (3).

2. The electromagnetic switch according to claim 1, characterized in that: The electromagnetic switch also includes an insulating connection seat (8), the movable conductive member (4) is fixedly connected to the insulating connection seat (8), and the lower side of the spring (6) is fixed to the upper side of the insulating connection seat (8).

3. The electromagnetic switch according to claim 2, characterized in that: A first connecting column or a first connecting hole (52) is provided on the lower side of the rotating member (5), and the upper side of the spring (6) is sleeved outside the first connecting column or inserted into the first connecting hole (52); The upper side of the insulating connection seat (8) is provided with a second connection column (81) or a second connection hole, and the lower side of the spring (6) is sleeved outside the second connection column (81) or inserted into the second connection hole.

4. The electromagnetic switch according to claim 3, characterized in that: The first connection column or the first connection hole (52) is arranged at the lower side of the rotation connection position of the rotating member (5) and the base (1); in the on state, the first connection column or the first connection hole (52) is arranged to be inclined toward the lower right side; in the off state, the first connection column or the first connection hole (52) is arranged to be inclined toward the lower left side; The second connecting column (81) or the second connecting hole is arranged on the upper left side of the rotational connection position of the movable conductive member (4) with the base (1); in the on state, the second connecting column (81) or the second connecting hole is arranged to be inclined toward the upper right side; in the off state, the second connecting column (81) or the second connecting hole is arranged to be inclined toward the upper left side.

5. The electromagnetic switch according to claim 2, characterized in that: The first fixed conductive member (2) comprises a connecting plate (21) whose normal line extends in the left-right direction, the connecting plate (21) is provided with a connecting groove (211) with an opening facing upward, the insulating connecting seat (8) and the movable conductive member (4) are clamped in the connecting groove (211) to achieve relative rotation with the base (1), the movable conductive member (4) abuts against the bottom of the connecting groove (211), and the side of the movable conductive member (4) abutting against the connecting groove (211) is the first power connection side (41).

6. The electromagnetic switch according to claim 2, characterized in that: The first fixed conductive member (2) comprises a connecting plate (21) whose normal line extends in the left-right direction, the connecting plate (21) is provided with a connecting groove (211) with an opening facing upward, the insulating connecting seat (8) and the movable conductive member (4) are clamped in the connecting groove (211) to achieve relative rotation with the base (1), the first power connection side (41) is provided with a first movable contact (411), the second power connection side (42) is provided with a second movable contact (421), the first movable contact (411) is provided on the left side of the connecting groove (211), and the second movable contact (421) is provided on the right side of the connecting groove (211); The insulating connection seat (8) is in contact with the bottom of the connection slot (211), the movable conductive member (4) and the connection slot (211) are isolated from each other, in the on state, the first movable contact (411) rotates upward and is in contact with the first fixed conductive member (2), the second movable contact (421) rotates downward and is in contact with the second fixed conductive member (3), and in the off state, the first movable contact (411) rotates downward and is separated from the first fixed conductive member (2), the second movable contact (421) rotates upward and is separated from the second fixed conductive member (3); Alternatively, the movable conductive member (4) abuts against the bottom of the connecting groove (211).

7. The electromagnetic switch according to claim 2, characterized in that: One of the first fixed conductive parts (2), one of the second fixed conductive parts (3) and one of the movable conductive parts (4) form a group of conductive components. The electromagnetic switch comprises two groups of conductive components, the two groups of conductive components are arranged with a front-to-back spacing, and the two groups of conductive components are insulated from each other. Both of the two movable conductive parts (4) are fixed on the insulating connecting seat (8), and the number of the spring (6) is one.

8. The electromagnetic switch according to claim 1, characterized in that: The base (1) is provided with a limit block (11), the limit block (11) is arranged on the right side of the spring (6), the limit block (11) is arranged on the lower side of the right side of the rotating member (5), the limit block (11) is arranged corresponding to the position of the rotating member (5), and the limit block (11) is used to limit the rotation angle of the rotating member (5) to the right side in the disconnected state.

9. The electromagnetic switch according to claim 1, characterized in that: The magnetic core (72) is in a U-shape with an opening facing upwards, and comprises two core legs (721). The coil (71) is sleeved outside one of the core legs (721), and both core legs (721) are matched with the magnetic attraction sheet (51).

10. The electromagnetic switch according to claim 1, characterized in that: The electromagnetic switch further comprises a control board (9), wherein the control board (9) is fixedly connected to the base (1), and the control board (9) is electrically connected to the coil (71).

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