Switching device

Abstract

A switching device comprises a shell, a contact system and two electromagnetic systems, the contact system and the two electromagnetic systems are arranged in the shell, the two electromagnetic systems are oppositely arranged on the two sides of the contact system, and each electromagnetic system comprises an upper armature and a coil used for driving the upper armature to move. The upper armatures of the two groups of electromagnetic systems are connected through a linkage shaft, the contact system comprises a static contact and a moving contact 5 arranged on a contact support 4, the linkage shaft is connected with the contact support, and the two groups of electromagnetic systems respectively drive the contact support to move through the linkage shaft. The contact support drives the moving contact to be in contact with or separated from the static contact, the driving force is large, the action response is fast, the balance is good, and the height of the switching device can be reduced.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to a switch electrical appliance. Background Art

[0002] Existing contactors are often used to control circuits, but the electromagnetic system and main circuit of existing contactors are distributed up and down, resulting in a relatively high product height. If the height is too high, it will make it impossible to install the contactor in some places. In addition, the contactor does not have overload and short-circuit protection functions. With the emergence of some new industries and new formats, there are some new requirements for the application of low-voltage switchgear. It requires both the advantages of high life and high operating frequency of contactor products and some protection functions, which the existing traditional contactor products cannot provide. Summary of the invention

[0003] The purpose of the invention is to break through some limitations of the prior art and provide a switch electrical appliance.

[0004] To achieve the above purpose, the present invention adopts the following technical solutions:

[0005] A switch electrical appliance comprises a shell, a contact system and two groups of electromagnetic systems respectively arranged in the shell, wherein the two groups of electromagnetic systems are arranged on both sides of the contact system relatively, and the two groups of electromagnetic systems respectively comprise an upper armature and a coil for driving the upper armature to move, and the upper armatures of the two groups of electromagnetic systems are connected via a linkage shaft, and the contact system comprises a static contact and a moving contact 5 arranged on a contact support 4, and the linkage shaft is connected to the contact support, and the two groups of electromagnetic systems respectively drive the contact support to move via the linkage shaft, so that the contact support drives the moving contact to contact and separate with the static contact.

[0006] Optionally, the two groups of electromagnetic systems are relatively arranged on both sides of the contact support along the first direction, the coil is used to drive the upper armature to move along the second direction, and drive the contact support to move along the second direction, the input end and the output end of the contact system are arranged along the third direction, and the first direction, the second direction and the third direction are arranged perpendicular to each other.

[0007] Optionally, two static contacts serving as an input terminal and an output terminal are respectively provided on both sides of the contact support, and the two static contacts are arranged along a third direction. The contact support is used to drive the moving contact to contact and separate from the static contacts 3 at both ends at the same time.

[0008] Optionally, a circuit board connected to two sets of electromagnetic systems respectively is provided in the shell, and the circuit board is provided with a control unit and a current collection circuit. The control unit is connected to the electromagnetic system to drive the electromagnetic system to operate, and the control unit is connected to the current collection circuit to collect the current of the main circuit, and drives the electromagnetic system to operate when an overload or short circuit occurs, so that the electromagnetic system drives the moving contact and the static contact to separate.

[0009] Optionally, the circuit board is provided with a voltage collection circuit, and the control unit is connected to the voltage collection circuit for collecting the voltage of the main circuit, and driving the electromagnetic system to operate when an overvoltage or undervoltage fault occurs, so that the electromagnetic system drives the moving contact and the static contact to separate.

[0010] Optionally, the circuit board includes a quick release circuit, which is connected to the coil of the electromagnetic system and is used to eliminate residual current in the coil.

[0011] Optionally, the shell includes a base and an arc-extinguishing hood arranged on the top side of the base, an upper cover is provided above the arc-extinguishing hood, the contact system is arranged inside the arc-extinguishing hood and the base, an arc-extinguishing mechanism is provided in the arc-extinguishing hood, two protruding boss structures are provided on the top side of the base, and groove structures for accommodating the electromagnetic system are respectively provided in the middle of the two boss structures.

[0012] Optionally, the groove structure is provided with a notch at a side wall close to the shell, and the shell is provided with a side cover corresponding to the notch.

[0013] Optionally, the top side of the base is further provided with two side covers respectively used to cover the two boss structures, the two boss structures are arranged on two sides of the arc extinguishing cover opposite to each other, and the height of the boss structures is smaller than the height of the arc extinguishing cover.

[0014] Optionally, a bottom cover is provided on the bottom side of the base, and a reaction force spring connected to the contact support is provided between the base and the bottom cover.

[0015] Optionally, two circuit boards are provided in the shell, and the two circuit boards are respectively connected to the coils of the two electromagnetic systems.

[0016] Optionally, a bottom cover is provided on the bottom side of the base, and two circuit boards are respectively located below the corresponding electromagnetic systems and are arranged between the base and the bottom cover.

[0017] Optionally, two sets of wiring mechanisms are respectively provided on the boss structure of the shell corresponding to each set of electromagnetic systems, and each set of wiring structures includes two sets of contact terminals connected to the circuit board, and the contact terminals are used to connect the control circuit of the corresponding electromagnetic system.

[0018] Optionally, contact terminals are provided on both side walls of the shell in the first direction for connecting to a control circuit of a corresponding electromagnetic system.

[0019] Optionally, the contact system is provided with multiple supporting structures, and moving contacts are respectively provided on the multiple supporting structures. The multiple supporting structures are arranged in sequence along the length direction of the linkage shaft. The arc extinguishing cover is provided with partitions between two adjacent supporting structures respectively. The partition is provided with a linkage groove for avoiding the linkage shaft on the side close to the base, and the linkage shaft passes through the multiple supporting structures in sequence.

[0020] Optionally, two ends of the moving contact in the third direction are respectively provided with arc extinguishing structures, and the arc extinguishing structures include a plurality of arc extinguishing corals arranged at intervals.

[0021] Optionally, an arc-striking plate and an arc-isolating plate are respectively provided at two ends of the moving contact in the third direction, and the corresponding arc extinguishing structure is located between the arc-striking plate and the arc-isolating plate, the arc-striking plate is located on the side of the arc extinguishing structure close to the moving contact, and the arc-isolating plate is located on the side of the arc extinguishing structure away from the moving contact, the arc-striking plate is used to direct the arc to the arc extinguishing structure, and the arc-isolating plate is used to block the arc.

[0022] Optionally, the contact support shown is internally provided with a contact spring and a clamping structure connected to the contact spring, the clamping structure extending to the outside of the contact support to push the moving contact, the contact spring drives the moving contact to be pressed against the upper limit position of the outer side surface of the contact support through the clamping structure, when the contact support drives the moving contact to contact the static contact, the moving contact is pressed against the upper limit position of the static contact, the contact support moves and compresses the contact spring, and the contact spring drives the moving contact to be pressed against the upper limit position of the static contact through the clamping structure.

[0023] 14. The repairing kit for automotive dents, according to claim 13, wherein the two foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bottom of the spring bracket between the side edges of the spring bracket, the contact spring is arranged between the bottom of the spring bracket and the inner side surface of the top plate and respectively rests against the bottom of the spring bracket and the inner side surface of the top plate, the two first side plates are respectively arranged higher than the top plate, and sliding grooves are respectively arranged on the sides facing each other of the two first side plates, the two spring bracket sides are respectively located in the sliding grooves for sliding cooperation, and one end of the two spring bracket sides away from the bottom of the spring bracket extends from the sliding grooves to the outer side of the top plate respectively, and one end of the two spring bracket sides located on the outer side of the top plate is connected to the pressure rod respectively, the moving contact is arranged between the pressure rod and the outer side surface of the top plate, the pressure rod is used to press the moving contact tightly against the upper limit position of the top plate, and a limiting boss cooperating with the pressure rod is provided on the moving contact, and avoidance holes for passing the linkage shaft are respectively provided on the sides of the two spring brackets, the avoidance holes are elongated, and the length direction of the avoidance holes is arranged parallel to the moving direction of the contact support.

[0024] Optionally, the electromagnetic system includes an upper armature and a fixed lower armature, a coil is arranged between the upper armature and the lower armature, and the coil is used to generate an electromagnetic force to drive the upper armature to move in the direction of the lower armature.

[0025] Optionally, the electromagnetic system includes a U-shaped lower armature and a coil frame arranged on the inner side of the lower armature, the coil is arranged on the outer side of the coil frame, and the upper armature is T-shaped. The upper armature includes a first linkage part and a second linkage part connected to the middle part of the first linkage part. A linkage hole is provided at the connection between the first linkage part and the second linkage part. The two ends of the linkage shaft are respectively inserted into the linkage holes of the upper armatures of the two electromagnetic systems, so that the two upper armatures can drive the linkage shaft to move. The second linkage part is inserted into the inner side of the coil frame, and the lower armature is used to attract the second linkage part so that the second linkage part drives the upper armature to move. The two ends of the first linkage part are respectively connected to the reset spring, and the reset spring is used to drive the upper armature to reset.

[0026] The switch electrical appliance created by the present invention arranges two groups of electromagnetic systems relatively on both sides of the contact system. The two groups of electromagnetic systems synchronously drive the contact support to move back and forth up and down, so that the contact support drives the moving contact to contact and separate with the static contact. Not only is the driving force large and the action response fast to drive one or more groups of moving contacts, but the two groups of electromagnetic systems apply driving force from both sides to ensure balance. In particular, the electromagnetic system is located on the lateral side of the contact system, and the electromagnetic system and the contact system occupy the space at the same height, avoiding the electromagnetic system and the contact system being arranged in the longitudinal direction, which can reduce the height of the switch electrical appliance. The switch electrical appliance of this embodiment can be used at a position where the contactor cannot be installed at the original height.

[0027] In addition, the switch electrical appliance created by the present invention has the high electrical life, mechanical life and convenience of remote control of the contactor, and also adds the short-circuit disconnecting protection function of the circuit breaker and the thermal overload protection function of the thermal overload relay, providing users with a new choice. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of the switch electrical appliance created by the present invention;

[0029] Figure 2 It is an exploded view of the switch electrical appliance created by the present invention;

[0030] Figure 3 It is a schematic diagram of the coordination between the electromagnetic system and the contact support created by the present invention;

[0031] Figure 4 It is a schematic diagram of the structure of the arc extinguishing hood created by the present invention;

[0032] Figure 5 It is a cross-sectional view of the switch electrical appliance created by the present invention;

[0033] Figure 6 It is another cross-sectional view and an enlarged view of the switch electrical device created by the present invention;

[0034] Figure 7 It is a structural schematic diagram of the linkage shaft, the pressing structure and the moving contact created by the present invention;

[0035] In the figure, 1, contact system; 2, electromagnetic system; 21, upper armature; 22, coil; 20, linkage shaft; 3, static contact; 4, contact support; 5, moving contact; 61, base; 62, arc extinguishing cover; 63, upper cover; 64, boss structure; 65, side cover; 66, groove structure; 67, side cover; 68, bottom cover; 7, reaction spring; 23, circuit board; 24, sensor; 27, contact terminal; 621, partition; 622, linkage groove; 81, arc-starting sheet; 8 2. Arc isolation plate; 83. Arc extinguishing structure; 40. Contact spring; 41. First side plate; 42. Second side plate; 43. Top plate; 44. Cover plate; 46. Support plate; 9. Clamping structure; 91. Side of spring bracket; 92. Bottom of spring bracket; 47. Slide groove; 93. Pressure rod; 94. Avoidance hole; 95. Limiting boss; 25. Lower armature; 26. Coil skeleton; 211. First linkage part; 212. Second linkage part; 213. Linkage hole; 214. Positioning piece. DETAILED DESCRIPTION

[0036] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the switch electrical apparatus created by the present invention. The switch electrical apparatus created by the present invention is not limited to the description of the following embodiments.

[0037] like Figure 1-2 As shown, the switch electrical appliance of this embodiment includes a shell and a contact system 1 and two groups of electromagnetic systems 2 respectively arranged in the shell. The two groups of electromagnetic systems 2 are relatively arranged on both sides of the contact system 1. The two groups of electromagnetic systems 2 respectively include an upper armature 21 and a coil 22 for driving the upper armature 21 to move. The upper armatures 21 of the two groups of electromagnetic systems 2 are connected by a linkage shaft 20. The contact system 1 includes a static contact 3 and a moving contact 5 arranged on a contact support 4. The linkage shaft 20 is connected to the contact support 4. The two groups of electromagnetic systems 2 drive the contact support 4 to move through the linkage shaft 20, so that the contact support 4 drives the moving contact 5 to contact and separate with the static contact 3.

[0038] The switch electrical appliance of the present embodiment arranges two groups of electromagnetic systems 2 on both sides of the contact system 1 relatively, and the two groups of electromagnetic systems 2 synchronously drive the contact support 4 to move up and down, so that the contact support 4 drives the moving contact 5 to contact and separate with the static contact 3. Not only is the driving force large enough to drive one or more groups of moving contacts 5, but the two groups of electromagnetic systems 2 apply driving force from both sides to ensure balance. In particular, the electromagnetic system 2 is located on the lateral side of the contact system 1, and the electromagnetic system 2 and the contact system 1 occupy the same height of the space, avoiding the electromagnetic system 2 and the contact system 1 being arranged in the longitudinal direction, which can reduce the height of the switch electrical appliance. The switch electrical appliance of the present embodiment can be used at a position where the contactor cannot be installed at the original height.

[0039] like Figure 1-2As shown, the two sets of electromagnetic systems 2 are relatively arranged on both sides of the contact support 4 along the first direction, the coil 22 is used to drive the upper armature 21 to move along the second direction, and drive the contact support 4 to move along the second direction, the inlet and outlet ends of the contact system 1 are arranged along the third direction, the first direction, the second direction and the third direction are arranged orthogonally and vertically to each other, the mechanism layout in the housing is reasonable, the structure is compact and the volume is small. Figure 1 , wherein the first direction is the width direction of the switch electrical appliance, the second direction is the height direction of the switch electrical appliance, and the third direction can be the length direction of the switch electrical appliance, which is used to connect the wires at both ends of the length of the switch electrical appliance.

[0040] Furthermore, two static contacts 3 are respectively provided on both sides of the contact support 4 as the incoming line end and the outgoing line end, and the two static contacts 3 are arranged along the third direction. Both ends of the moving contact 5 extend out of the contact support 4 in the third direction. The contact support 4 is used to drive the moving contact 5 to contact and separate with the static contacts 3 at both ends at the same time, which can further improve the rationality of the layout. In this embodiment, the two static contacts 3 are respectively arranged integrally with the incoming line end and the outgoing line end, that is, Figure 1 , 5 As described in the above, one end of the stationary contact 3 is provided with a stationary contact point that cooperates with the moving contact, and the other end extends out of the housing as an incoming line terminal or an outgoing line terminal for connecting to a power source. Of course, as other embodiments, the two stationary contacts 3 can also be separately provided with the incoming line terminal and the outgoing line terminal, that is, the stationary contact 3 and the terminal block serving as the incoming line terminal and the outgoing line terminal are respectively provided, and the stationary contact 3 and the terminal block are connected by welding, riveting or screws, and can also be indirectly connected by a conductor.

[0041] like Figure 1-2As shown, the housing includes a base 61 and an arc extinguishing cover 62 arranged on the top side of the base 61, an upper cover 63 is arranged above the arc extinguishing cover 62, the contact system 1 is arranged inside the arc extinguishing cover 62 and the base 61, an arc extinguishing mechanism is arranged in the arc extinguishing cover 62, two boss structures 64 are provided on the top side of the base 61, and the middle parts of the two boss structures 64 are respectively provided with groove structures 66 for accommodating the electromagnetic system 2, and the electromagnetic system 2 is installed in the groove structure 66. Preferably, the groove structure 66 is provided with a notch near the side wall of the housing, and the housing is provided with a side cover 67 corresponding to the notch, which is used to protect the electromagnetic system 2 and also facilitate the replacement of the electromagnetic system 2; in this embodiment, the side cover 67 is L-shaped, corresponding to the top and side notches of the groove structure 66, and of course, it can also be other structures. Furthermore, the top side of the base 61 is also provided with two side covers 65 respectively used to cover the two boss structures 64. The two boss structures 64 are arranged on both sides of the arc extinguishing cover 62 opposite to each other, and the height of the boss structure 64 is less than the height of the arc extinguishing cover 62, so that the internal space is more reasonably used. Of course, the height of the boss structure 64 can also be greater than or equal to the height of the arc extinguishing cover 62. The bottom side of the base 61 is provided with a bottom cover 68, and a reaction spring 7 connected to the contact support 4 is provided between the base 61 and the bottom cover 68. In this embodiment, the reaction spring 7 is used to drive the contact support 4 to drive the moving contact 5 away from the static contact 3 to form a normally open contact. When the coil 22 is energized, the moving contact 5 and the static contact 3 are closed by pressing the contact support 4; when the coil 22 is de-energized, the reaction spring 7 and the contact spring 40 push the contact support 4 to separate the moving contact 5 and the static contact 3. The shell structure of this embodiment facilitates the installation of the electromagnetic system 2 and the contact system 1. Obviously, as other embodiments, the shell may only have a base and an upper cover, or a left shell and a right shell, or may be assembled from more shell structures, all of which fall within the protection scope of the present invention.

[0042] like Figure 6As shown, the housing is provided with a circuit board 23 connected to the two sets of electromagnetic systems 2 respectively, and the circuit board 23 can make the two sets of electromagnetic systems 2 work. If there is a short circuit, overload, etc., the coil voltage is disconnected in time, so that the contact support 4 drives the moving contact 5 to contact and separate from the static contact 3, so as to realize the closing and disconnection of the switch. Preferably, the circuit board 23 is provided with a control unit, which can realize overload, and / or short circuit, and / or undervoltage, and / or overvoltage protection, etc.; for example, the circuit board 23 is provided with a control unit and a current acquisition circuit, the control unit is connected to the electromagnetic system 2 to drive the electromagnetic system 2 to work, and the control unit is connected to the current acquisition circuit to collect the current of the main circuit to detect overload or short circuit faults, and when an overload or short circuit fault occurs, the electromagnetic system 2 is driven to work, so that the electromagnetic system 2 drives the moving contact 5 to separate from the static contact 3. Furthermore, the circuit board 23 is also provided with a voltage collection circuit. The control unit is connected to the voltage collection circuit to collect the voltage of the main circuit to detect overvoltage or undervoltage faults. When an overvoltage or undervoltage fault occurs, the electromagnetic system 2 is driven to operate, so that the electromagnetic system 2 drives the moving contact 5 to separate from the static contact 3.

[0043] In this embodiment, the stationary contact 3 is provided with a sensor 24 connected to the circuit board 23. The circuit board 23 is provided with a control unit and a current acquisition circuit and a voltage acquisition circuit. The current acquisition circuit and the voltage acquisition circuit respectively detect the current and voltage of the stationary contact 3 through the sensor 24. When the control unit detects the occurrence of overload and short-circuit fault current through the current acquisition circuit, it drives the electromagnetic system 2 to operate, so that the electromagnetic system 2 drives the moving contact 5 to separate from the stationary contact 3. When the control unit detects the occurrence of overvoltage fault current through the voltage acquisition circuit, it drives the electromagnetic system 2 to operate, so that the electromagnetic system 2 drives the moving contact 5 to separate from the stationary contact 3. For example, when the current or voltage on the stationary contact 3 exceeds a threshold value, the current acquisition circuit and the voltage acquisition circuit respectively output corresponding fault signals to the circuit board 23, and the duration of the fault signal is recorded through the circuit board 23. When the duration of the fault signal meets the threshold value, the electromagnetic system 2 is driven to operate, so that the electromagnetic system 2 drives the moving contact 5 to separate from the stationary contact 3. The fault current may be overload, short circuit, undervoltage and overvoltage, or any combination thereof, so that the switch electrical appliance has overload, short circuit, undervoltage and / or overvoltage protection functions on the basis of the control circuit. Of course, the circuit board 23 may also be arranged at other positions, such as the side of the electromagnetic system 2, and the sensor 24 may also be arranged on the wiring terminal or the moving contact or other conductive elements of the main circuit, all of which belong to the protection scope of the invention. The sensor 24 may be a resistor, a mutual inductor, etc.

[0044] The housing is provided with contact terminals 27 on both side walls in the first direction, i.e., the width direction, for connecting the control circuit of the corresponding electromagnetic system 2. In this embodiment, two circuit boards 23 are provided in the housing, and the two circuit boards 23 are respectively connected to the two groups of electromagnetic systems 2. The two circuit boards 23 are respectively located below the corresponding electromagnetic systems 2 and are arranged between the base 61 and the bottom cover 68. Two groups of wiring mechanisms are respectively provided on the boss structure 64 of the housing corresponding to each group of electromagnetic systems 2. The two groups of wiring mechanisms are relatively arranged on both sides of the corresponding electromagnetic system 2, and each group of wiring structures includes two groups of contact terminals 27 connected to the circuit boards 23. The contact terminals 27 are used to connect the control circuit of the corresponding electromagnetic system 2 to realize external control of the electromagnetic system 2.

[0045] Further, the circuit board 23 has the function of the residual current in the coil 22 of the electromagnetic system 2, and the circuit board 23 includes a quick release circuit. The coil is an inductor element, which belongs to an energy storage element. After the power is off, there is still an induced current inside the coil. The armature 21 will produce residual magnetism, which hinders the release of the armature 21. The quick release circuit is connected to the coil 22 of the electromagnetic system 2 to eliminate the residual current in the coil 22. In this embodiment, the two circuit boards 23 are respectively provided with quick release circuits for connecting to the coils 22 of the two electromagnetic systems 2. The quick release circuit is used to eliminate the residual current in the coil 22 after the coil 22 is powered off. The quick release circuit includes a resistor and a diode, and the quick release circuit of the prior art can also be used. In this embodiment, two circuit boards 23 are set. The two circuit boards 23 can not only realize the control of the two electromagnetic systems 2 separately, but also the two electromagnetic systems 2 can be protected by the corresponding circuit boards 23 respectively. Of course, as other embodiments, one or more circuit boards 23 may be provided, and one circuit board 23 may be connected to two electromagnetic systems 2 at the same time, or multiple circuit boards 23 may be connected, and the middle sensor 24 transmits the electrical signal to all circuit boards 23, and the circuit boards 23 then control their respective electromagnetic systems 2 respectively, thereby achieving control of the electromagnetic systems 2 on both sides.

[0046] like Figure 3-4As shown, the present embodiment is a three-phase structure, the contact support 4 is provided with three support structures, the two electromagnetic systems 2 are respectively arranged on both sides of the three support structures, the three support structures are arranged in sequence along the length direction of the linkage shaft 20, the length direction of the linkage shaft 20 is the first direction, the arc extinguishing cover 62 is provided with a partition 621 between two adjacent support structures respectively, the partition 621 is provided with a linkage groove 622 for avoiding the linkage shaft 20 on the side close to the base 61, the linkage shaft 20 passes through the three support structures in sequence, and is used to drive the three support structures to move at the same time, the three support structures are respectively provided with moving contacts 5, and each support structure is respectively provided with two static contacts 3 on the other two sides, and the moving contact 5 is driven to contact and separate with the corresponding two static contacts 3 when the support structure moves. In the switch electrical appliance of this embodiment, the first electromagnetic system 2, three supporting structures, and the second electromagnetic system 2 are sequentially arranged along the length direction of the linkage shaft 20, the moving contact 5 is mounted on the supporting structure, and both ends extend from the supporting structure, the length direction of the moving contact 5 is perpendicular to the length direction of the linkage shaft 20, and static contacts 3 corresponding to the two ends of the moving contact 5 are respectively arranged on both sides of each supporting structure, and the connection line of the two static contacts 3 is perpendicular to the length direction of the linkage shaft 20. It can be understood that the number of the supporting structures can also be adjusted, and the number of the moving contact 5 and the static contact 3 is also adjusted accordingly according to the number of supporting structures, for example, one, two supporting structures, or more than three supporting structures are arranged, and the multiple supporting structures can be integrally injected to form the contact support 4, or multiple supporting structures can be spliced ​​to form the contact support 4, or multiple supporting structures are respectively connected to the linkage shaft 20. The multiple supporting structures are arranged along the length direction of the linkage shaft 20, and the two electromagnetic systems 2 can simultaneously drive the multiple supporting structures to move through the linkage shaft 20, and the height of the switch electrical appliance will not be increased.

[0047] like Figure 5 As shown, arc extinguishing mechanisms are respectively provided at both ends of the moving contact 5, and the arc extinguishing mechanisms include an arc extinguishing structure 83. In this embodiment, the arc extinguishing cover 62 is respectively provided with an arc-striking piece 81 and an arc-isolating piece 82 at both ends corresponding to the moving contact 5 in the third direction, and an arc extinguishing structure 83 located between the arc-striking piece 81 and the arc-isolating piece 82, and the arc extinguishing structure 83 includes a plurality of arc-striking pieces arranged at intervals, the arc-striking piece 81 is located on the side of the arc-striking structure 83 close to the moving contact 5, and the arc-isolating piece 82 is located on the side of the arc-striking structure 83 away from the moving contact 5, the arc-striking piece 81 is used to guide the arc to the arc extinguishing structure 83, and a plurality of arc-striking pieces separate the arc to play an arc extinguishing role, the arc-isolating piece 82 is used to block the arc, and the upper cover 63 is used to protect the arc-striking piece 81, the arc-isolating piece 82 and the arc extinguishing structure 83 in the arc extinguishing cover 62, and in this embodiment, the two arc-striking pieces 81 at both ends of each moving contact 5 are connected. Of course, the two arc-starting pieces 81 at both ends of each moving contact 5 can also be independently provided, and both belong to the protection scope of the invention.

[0048] like Figure 6-7 As shown, the moving contact 5 is mounted on the contact support 4 through the contact spring 40. In one embodiment, the moving contact 5 passes through the contact support 4, and the contact spring 40 is arranged on the contact support 4 to act on the moving contact 5. Preferably, in the present embodiment, the moving contact 5 is arranged on the top of the contact support 4 and is fixed by a clamping structure 9, a contact spring 40 and a contact support 4. A contact spring 40 and a clamping structure 9 connected to the contact spring 40 are provided inside the contact support 4. The clamping structure 9 extends to the outside of the contact support 4 to push the moving contact 5. The contact spring 40 drives the moving contact 5 to be pressed against the upper limit position of the outer side surface of the contact support 4 through the clamping structure 9. When the contact support 4 drives the moving contact 5 to contact the static contact 3, the moving contact 5 is pressed against the upper limit position of the static contact 3. The contact support 4 moves and compresses the contact spring 40. The contact spring 40 drives the moving contact 5 to be pressed against the upper limit position of the static contact 3 through the clamping structure 9, thereby increasing the contact pressure between the static contact 3 and the moving contact 5. The clamping structure 9 is provided with an avoidance hole for avoiding the linkage shaft 20. Of course, as other embodiments, the clamping structure 9 may not be provided. For example, a sleeve (not shown in the figure) is provided on the linkage shaft 20. The linkage shaft 20 drives the sleeve to press on the top of the moving contact 5, so that the moving contact 5 is pressed on the contact support 4, which belongs to the protection scope of the invention.

[0049] Specifically, the support structure of the contact support 4 is a hollow tetrahedron structure, including two first side plates 41 arranged opposite to each other, and two second side plates 42 connected between the two first side plates 41, the first side plate 41 is used to separate each phase, the two first side plates 41 and the two second side plates 42 are connected by a top plate 43, and a support space for accommodating the clamping structure 9 and the contact spring 40 is enclosed between the two first side plates 41, the two second side plates 42 and the top plate 43, and also includes a cover plate 44 arranged opposite to the top plate 43, the cover plate 44 is used to cover the opening position of the support space, the two first side plates 41 and the top plate 43 are respectively provided with a first support hole and a second support hole for passing the linkage shaft 20, the linkage shaft 20 passes through the first side plate 41 and the top plate 43 from the first support hole and the second support hole respectively, and is used to drive the contact support 4 to move, and the two second side plates 42 are respectively provided with support plates 46 ( Figure 3), the support plate 46 is connected to the reaction spring 7, the clamping structure 9 is a U-shaped structure, the clamping structure 9 includes two spring bracket side edges 91 arranged opposite to each other, and a spring bracket bottom 92 connected between the two spring bracket side edges 91, the contact spring 40 is arranged between the spring bracket bottom 92 and the inner side surface of the top plate 43 and respectively abuts against the spring bracket bottom 92 and the inner side surface of the top plate 43, the two first side plates 41 are respectively arranged higher than the top plate 43, and slide grooves 47 are respectively provided on the sides facing each other of the two first side plates 41, the two spring bracket side edges 91 are respectively located in the slide grooves 47 for sliding cooperation, and the two spring brackets One end of the side edge 91 of the frame away from the bottom 92 of the spring support extends from the slide groove 47 to the outside of the top plate 43, and one end of the two spring support side edges 91 located on the outside of the top plate 43 is connected to the pressure rod 93, respectively. The moving contact 5 is arranged between the pressure rod 93 and the outer side of the top plate 43, and the pressure rod 93 is used to press the moving contact 5 to the upper limit of the top plate 43. The moving contact 5 is provided with a limit boss 95 that cooperates with the pressure rod 93. The two spring support side edges 91 are respectively provided with avoidance holes 94 for passing the linkage shaft 20, and the avoidance holes 94 are in a long strip shape, and the length direction of the avoidance holes 94 is arranged parallel to the moving direction of the contact support 4. Of course, the clamping structure 9 can also adopt other shapes, which all belong to the protection scope of the invention.

[0050] like Figure 3As shown, the electromagnetic system 2 includes an upper armature 21 and a fixed lower armature 25, and a coil 22 is arranged between the upper armature 21 and the lower armature 25. The coil 22 is used to generate an electromagnetic force to drive the upper armature 21 to move in the direction of the lower armature 25. In this embodiment, the electromagnetic system 2 includes a U-shaped lower armature 25, and a coil frame 26 arranged on the inner side of the lower armature 25. The coil 22 is arranged on the outer side of the coil frame 26. The upper armature 21 is T-shaped. The upper armature 21 includes a first linkage part 211 and a second linkage part 212 connected to the middle part of the first linkage part 211. A linkage hole 213 is provided at the connection between the first linkage part 211 and the second linkage part 212. The two ends of the linkage shaft 20 are respectively inserted into the linkage holes 213 of the upper armatures 21 of the two electromagnetic systems 2, so that the two upper armatures 21 can drive the linkage shaft 20 to move. The second linkage part 212 is inserted into the inner side of the coil frame 26, and the lower armature 25 is used to attract the second linkage part 212, so that the second linkage part 212 drives the upper armature 21 to move. The two ends of the first linkage part 211 are respectively provided with positioning members 214, and the positioning members 214 are connected to a reset spring (not shown in the figure). The reset spring is used to drive the upper armature 21 to reset. The upper armature 21 with a T-shaped structure can maintain balance through the first linkage part 211 while connecting the linkage shaft 20, and ensure reliable attraction with the coil 22 through the second linkage part 212, which has the characteristics of compact structure and small size. Of course, the electromagnetic system 2 can also use other existing technologies to attract the upper armature 21 to move, and can also adjust the shapes of the upper armature 21 and the lower armature 25. For example, the upper armature 21 or the lower armature 25 is an inverted T-shaped, U-shaped, sideways E-shaped, etc., all of which belong to the protection scope of the invention.

[0051] It should be noted that in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship usually placed when in use, which is only for the convenience of description, and does not indicate that the device or element referred to must have a specific orientation, and therefore cannot be understood as a limitation on the invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating relative importance.

[0052] The above content is a further detailed description of the invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. For ordinary technicians in the technical field to which the invention belongs, several simple deductions or substitutions can be made without departing from the concept of the invention, which should be regarded as falling within the scope of protection of the invention.

Claims

1. A switch electrical appliance, characterized in that: The invention comprises a housing, a contact system (1) and two groups of electromagnetic systems (2) respectively arranged in the housing, wherein the two groups of electromagnetic systems (2) are arranged on both sides of the contact system (1) relatively to each other, and the two groups of electromagnetic systems (2) respectively comprise an upper armature (21) and a coil (22) for driving the upper armature (21) to move, and the upper armatures (21) of the two groups of electromagnetic systems (2) are connected via a linkage shaft (20), and the contact system (1) comprises a stationary contact (3) and a moving contact 5 arranged on a contact support 4, and the linkage shaft (20) is connected to the contact support (4), and the two groups of electromagnetic systems (2) respectively drive the contact (5) and the contact support (4) to move via the linkage shaft (20), so that the contact support (4) drives the moving contact (5) to contact and separate with the stationary contact (3).

2. The switch device according to claim 1, characterized in that: The two groups of electromagnetic systems (2) are arranged relatively on both sides of the contact support (4) along a first direction, the coil (22) is used to drive the upper armature (21) to move along a second direction, and drive the contact support (4) to move along the second direction, the incoming line end and the outgoing line end of the contact system (1) are arranged along a third direction, and the first direction, the second direction and the third direction are arranged perpendicular to each other.

3. The switch device according to claim 2, characterized in that: Two stationary contacts (3) serving as an incoming line end and an outgoing line end are respectively arranged on both sides of the contact support (4), the two stationary contacts (3) are arranged along a third direction, and the contact support (4) is used to drive the moving contact (5) to contact and separate from the stationary contacts 3 at both ends at the same time.

4. The switch device according to claim 1, characterized in that: The housing is provided with a circuit board (23) connected to the two sets of electromagnetic systems (2) respectively. The circuit board (23) is provided with a control unit and a current collection circuit. The control unit is connected to the electromagnetic system (2) for driving the electromagnetic system (2) to operate. The control unit is connected to the current collection circuit for collecting the current of the main circuit. When an overload or short circuit fault occurs, the electromagnetic system (2) is driven to operate, so that the electromagnetic system (2) drives the moving contact (5) to separate from the static contact (3).

5. The switch device according to claim 4, characterized in that: The circuit board (23) is provided with a voltage collection circuit, and the control unit is connected to the voltage collection circuit for collecting the voltage of the main circuit, and when an overvoltage or undervoltage fault occurs, the electromagnetic system (2) is driven to operate, so that the electromagnetic system (2) drives the moving contact (5) to separate from the static contact (3).

6. The switch device according to claim 4, characterized in that: The circuit board (23) comprises a quick release circuit, which is connected to the coil (22) of the electromagnetic system (2) and is used to eliminate the residual current in the coil (22).

7. The switch device according to claim 1, characterized in that: The housing comprises a base (61) and an arc extinguishing hood (62) arranged on the top side of the base (61); an upper cover (63) is arranged above the arc extinguishing hood (62); the contact system (1) is arranged inside the arc extinguishing hood (62) and the base (61); an arc extinguishing mechanism is arranged in the arc extinguishing hood (62); two protruding boss structures (64) are arranged on the top side of the base (61); and groove structures (66) for accommodating the electromagnetic system (2) are respectively arranged in the middle of the two boss structures (64).

8. The switch device according to claim 7, characterized in that: The groove structure (66) is provided with a notch near the side wall of the shell, and the shell is provided with a side cover (67) corresponding to the notch.

9. The switch device according to claim 7, characterized in that: The top side of the base (61) is also provided with two side covers (65) respectively used to cover the two boss structures (64); the two boss structures (64) are arranged opposite to each other on two sides of the arc extinguishing cover (62); and the height of the boss structures (64) is smaller than the height of the arc extinguishing cover (62).

10. The switch device according to claim 7, characterized in that: A bottom cover (68) is provided on the bottom side of the base (61), and a reaction force spring (7) connected to the contact support (4) is provided between the base (61) and the bottom cover (68).

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