Magnetic tripping mechanism and operating system

Abstract

The invention relates to the field of low-voltage electric appliances, in particular to a magnetic tripping mechanism and an operating system comprising the magnetic tripping mechanism. In the magnetic tripping mechanism, an armature piece linearly moves in the direction d1 to be attracted to and separated from a magnet yoke piece, an armature reset spring acts on the armature piece to enable the armature piece to have the movement trend of being separated from the magnet yoke piece, and a conductive plate is used for being connected in series in a circuit to be broken and at least partially inserted in the middle of the magnet yoke piece. The armature piece comprises a main armature and an auxiliary armature, the main armature comprises a main armature plate and an armature transmission arm, one end of the armature transmission arm is connected with the main armature plate in a bent mode, the other end of the armature transmission arm is used for outputting driving force, and the main armature plate and the auxiliary armature are arranged in a stacked mode in the direction d1. The magnetic tripping mechanism and the operation system are convenient to produce.

Description

Technical Field

[0001] The present invention relates to the field of low-voltage electrical appliances, and particularly to a magnetic trip mechanism and an operating system including the magnetic trip mechanism. Background Art

[0002] A circuit breaker is a switching device used to disconnect and connect a load circuit, and cut off a faulty circuit to prevent the accident from expanding, thus ensuring the safe operation of the load circuit; among them, a 1U circuit breaker often includes a first circuit (for controlling the on / off of the positive pole of the load circuit) and a second circuit (a direct-through circuit for electrically connecting the negative pole of the load circuit); the first circuit includes a handle and an operating mechanism, the handle slides and drives the contact system to close and disconnect through the operating mechanism; the first circuit also includes a thermal trip mechanism and a magnetic trip mechanism; the magnetic trip mechanism includes a cooperating armature and yoke, and in order to ensure reliable cooperation between the two, it is often necessary to use a relatively thick magnetic metal plate for production, with great operation difficulty. Summary of the Invention

[0003] The purpose of the present invention is to overcome at least one defect of the prior art, and provide a magnetic trip mechanism which is more convenient for processing; and also provide an operating system including the magnetic trip mechanism, which is convenient for production.

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

[0005] A magnetic trip mechanism includes an armature, a yoke, an armature return spring, and a conductive plate. The armature moves linearly along the direction d1 to engage and disengage with the yoke. The armature return spring acts on the armature to give it a tendency to move away from the yoke. The conductive plate is used to be connected in series in the circuit to be disconnected, and at least part of it is inserted in the middle of the yoke.

[0006] The armature includes a main armature and a sub-armature. The main armature includes a main armature plate and an armature transmission arm. One end of the armature transmission arm is bent and connected to the main armature plate, and the other end is used to output a driving force. The main armature plate and the sub-armature are stacked along the direction d1.

[0007] Further, the yoke includes a yoke and at least one magnetic enhancement plate. The yoke includes a yoke bottom plate and yoke arms. The two yoke arms are arranged oppositely and are respectively bent and connected to both ends of the yoke bottom plate. The yoke bottom plate and the magnetic enhancement plate are stacked together along the direction d1.

[0008] Further, the conductive plate and the magnetic enhancement plate are respectively located on both sides of the yoke bottom plate in the direction d1, and the conductive plate, the yoke bottom plate, and the magnetic enhancement plate are fixedly connected together.

[0009] Furthermore, the armature transmission arm includes a transmission arm connecting plate and a transmission arm driving plate. The transmission arm connecting plate extends along direction d1, one end of which is bent and connected to the main armature plate and the other end of which is bent and connected to the transmission arm driving plate. The transmission arm driving plate is arranged parallel to the main armature plate.

[0010] Furthermore, the magnetic tripping mechanism also includes an armature guide rod, which cooperates with the armature member to guide the armature member.

[0011] Furthermore, one end of the armature guide rod is fixedly connected to the armature member and the other end is slidably inserted into the armature guide hole on the bottom wall of the yoke member.

[0012] Furthermore, the armature return spring is sleeved on the armature guide rod, and its two ends are respectively matched with the armature piece and the conductive plate.

[0013] An operating system, comprising the magnetic tripping mechanism; the operating system also comprises an operating mechanism, the operating mechanism comprising a second rotating shaft and a first rotating shaft structure respectively rotatably arranged, and a rear connecting rod; the first rotating shaft structure comprises a first rotating shaft rotatably arranged, and a third connecting rod and a locking component respectively rotatably arranged on the first rotating shaft and snap-fitted; the rotating shaft directions of the second rotating shaft, the first rotating shaft, the third connecting rod and the locking component are the same as direction d3, direction d1 and direction d3 are perpendicular to each other, the second rotating shaft is connected to the third connecting rod through a rear connecting rod, and the first rotating shaft is used to be connected to the moving contact of a switching device through a transmission; the magnetic tripping mechanism is used to drive the locking component to rotate through an armature transmission arm to release the snap-fit with the third connecting rod when a short circuit fault occurs in the circuit where the switching device is located.

[0014] Furthermore, the operating system also includes a thermal trip mechanism, which is used to drive the locking component to rotate and release the latching cooperation with the third connecting rod when an overload fault occurs in the circuit where the switch device is located; the thermal trip mechanism and the magnetic trip mechanism are arranged side by side along direction d1 and are both located on one side of the operating mechanism in direction d2, and directions d1, d2 and d3 are perpendicular to each other.

[0015] Furthermore, the thermal release mechanism includes a double metal component and a rotatable traction rod, the double metal component extends along the direction d1, one end of which is fixed and the other end drives the locking component to rotate through the traction rod; the traction rod rotates in opposite directions to the locking component.

[0016] Further, the bimetal component includes a bimetal sheet, a connecting member, and an adjusting screw. The bimetal sheet extends along the direction d1, with one end fixedly arranged and the other end inserted into the connecting member. The adjusting screw is arranged on the connecting member and threadedly connected thereto. The traction rod includes a first traction rod arm and a second traction rod arm. One end of the adjusting screw is in driving cooperation with the first traction rod arm to drive the traction rod to rotate, and the other end is for external force operation to drive the adjusting screw to rotate. The second traction rod arm is in driving cooperation with the latch component to drive it to rotate.

[0017] Further, the bimetal sheet is provided with a bimetal relief hole for avoiding the adjusting screw. The connecting member includes a connecting member insertion hole provided therein and connecting member holes provided on a pair of side walls of the connecting member insertion hole. The diameter of the bimetal relief hole is larger than the diameter of the connecting member hole, and the diameter of the connecting member hole is adapted to the adjusting screw. One end of the bimetal sheet is inserted into the connecting member insertion hole and is in interference fit with the connecting member.

[0018] Further, one end of the bimetal component cooperating with the traction rod is arranged close to the armature of the electromagnetic release mechanism. The traction rod is located between the bimetal component and the electromagnetic release mechanism in the direction d1. The axis direction of the traction rod is the same as the direction d3.

[0019] Further, the latch component includes a latch body, a first cooperating arm, and a second cooperating arm. The latch component is rotatably arranged on a first rotating shaft through the latch body. The first cooperating arm and the second cooperating arm are arranged in a radial pattern, with one end respectively connected to the latch body and the other end respectively in driving cooperation with the thermal release mechanism and the electromagnetic release mechanism. The first cooperating arm and the second cooperating arm are arranged offset in the direction d3. The transmission arm connecting plate of the first cooperating arm and the armature transmission arm are respectively located on both sides of the second cooperating arm in the direction d3. The transmission arm driving plate is located between the first cooperating arm and the second cooperating arm in the rotation direction of the latch component. The free end of the transmission arm driving plate is spaced from the first cooperating arm in the direction d3.

[0020] In the magnetic release mechanism of the present invention, the structural design of the armature can reduce the thickness requirement for the main armature, reduce the forming difficulty of the armature transmission arm, facilitate processing, and the cooperation between the secondary armature and the main armature ensures the reliable cooperation between the armature and the yoke.

[0021] In addition, the layout of the thermal release mechanism, the magnetic release mechanism, and the operating mechanism is more reasonable and compact, which is beneficial to reducing the required space.

[0022] The operating system of the present invention includes the magnetic release mechanism, which is convenient for production. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural diagram of the switch device of the present invention;

[0024] Figure 2 is a sectional view of the switch device in the open state of the present invention;

[0025] Figure 3 is Figure 2 an enlarged schematic structural view of part I;

[0026] Figure 4 is a sectional view of the switch device in the closed state of the present invention;

[0027] Figure 5 is the present invention Figure 4 an enlarged schematic structural view of part II;

[0028] Figure 6 is a schematic structural view of the switch device of the present invention with the housing removed;

[0029] Figure 7 is a schematic structural view of the circuit structure of the first circuit and the circuit structure of the second circuit of the present invention;

[0030] Figure 8 is a schematic view of the latch member being driven by the magnetic release mechanism to release the latching fit between the latch member and the third link and a schematic view of the latch member being driven by the thermal release mechanism to release the latching fit between the latch member and the third link of the present invention;

[0031] Figure 9 is a schematic structural view of the operating mechanism driving the moving contact to move to the open position after tripping of the present invention;

[0032] Figure 10 is a schematic structural view of the rotating shaft, the moving contact, the protective plate and the contact spring in the assembled state of the present invention;

[0033] Figure 11 is a schematic structural view of the protective plate of the present invention;

[0034] Figure 12 is an exploded view of the thermal release mechanism of the present invention;

[0035] Figure 13 is an exploded view of the magnetic release mechanism of the present invention;

[0036] Figure 14 is a schematic structural view of the latch member of the present invention.

[0037] Description of reference numerals

[0038] Outer shell 1a, first outer half shell 1-1a, second outer half shell 1-2a, outer adjustment hole 1-6a;

[0039] Hole cover 3a;

[0040] Handle 1b, handle connection protrusion 1-5b;

[0041] Operating mechanism 7b, front connecting rod 7-1b, second rotating shaft 7-2b, opening positioning part 7-22b, closing positioning part 7-23b, energy storage cooperation part 7-24b, rear connecting rod 7-3b, first rotating shaft structure 7r, first rotating shaft 7-4b, first rotating shaft main body 7-41b, contact spring installation groove 7-411b, protection plate installation groove 7-412b, moving contact moving groove 7-413b, central column 7-414b, moving contact jack 7-415b, installation groove side wall 7-416b, first rotating shaft cooperation part 7-42b, third connecting rod 7-5b, locking component 7-6b, locking main body 7-61b, force receiving part main body 7-611b, locking part 7-612b, force receiving part 7-64b, first cooperation arm 7-62b, second cooperation arm 7-63b, locking spring 7-7b, main reset part 7-8b, second rotating shaft reset part 7-9b, contact spring 7-10b, protection plate 7-11b, protection plate installation hole 7-111b;

[0042] Electric reclosing mechanism 8b;

[0043] Thermal release mechanism 9b, bimetal component 9-123b, bimetallic strip 9-1b, bimetal avoidance hole 9-11b, connecting piece 9-2b, connecting piece jack 9-21b, connecting piece hole 9-22b, adjusting screw 9-3b, heating element 9-4b, traction rod 9-5b, traction rod installation part 9-51b, traction rod first arm 9-52b, traction rod second arm 9-53b;

[0044] Magnetic release mechanism 10b, armature part 10-1b, main armature 10-11b, main armature plate 10-111b, armature transmission arm 10-112b, transmission arm connecting plate 10-1121b, transmission arm driving plate 10-1122b, auxiliary armature 10-12b, yoke part 10-2b, yoke 10-21b, magnetic flux increasing plate 10-22b, armature return spring 10-3b, armature guide rod 10-4b;

[0045] Contact system 11b, moving contact 11-1b, moving contact plate 11-11b, moving contact plate connection section 11-111b, moving contact plate bearing section 11-112b, moving contact point 11-12b, static contact 11-2b, static contact point 11-21b, static contact plate 11-22b, first section of static contact plate 11-221b, second section of static contact plate 11-222b, third section of static contact plate 11-223b;

[0046] Manganin shunt 13b;

[0047] First connecting plate 14b;

[0048] First connection board 17b;

[0049] Second connection board 18b;

[0050] The second connection plate 1c. Specific embodiments

[0051] The following embodiments given in conjunction with the accompanying drawings further illustrate the specific embodiments of the switching device of the present invention. The switching device of the present invention is not limited to the description of the following embodiments.

[0052] The present invention discloses a switching device, specifically a circuit breaker. Further, the circuit breaker is a plug-in circuit breaker. Further, the circuit breaker is a 1U circuit breaker.

[0053] As Figure 1-2 Shown in FIGS. 4, 6 - 7, an embodiment of the switching device of the present invention is a single-pole switching device, which includes a housing and a first circuit and a second circuit provided in the housing; the first circuit is a negative circuit, and the first circuit preferably includes a break point (for example, a break point that can be opened and closed composed of a moving contact and a static contact), that is, the conduction and disconnection of the first circuit can be controlled by controlling the closing and opening of the break point; the second circuit is a positive circuit, and the second circuit is preferably a direct-through circuit. A "direct-through circuit" means that there is no break point (for example, a break point that can be opened and closed composed of a moving contact and a static contact) in the second circuit, and it always remains in a conductive state. Further, in the actual use of the switching device of this embodiment, the two ends of the first circuit are used to connect the negative wire on the power supply side and the negative wire on the load side, and the two ends of the second circuit are respectively used to connect the positive wire on the power supply side and the positive wire on the load side.

[0054] Further, for the switching device of the present invention, its length direction, width direction, and height direction are direction d1, direction d2, and direction d3 respectively, and direction d1, direction d2, and direction d3 are perpendicular to each other; the length direction, width direction, and height direction of the housing are the same as direction d1, direction d2, and direction d3 respectively.

[0055] Further, as Figure 1 Shown in the figure, the housing includes an outer shell 1a, and both the first circuit and the second circuit are provided in the outer shell 1a. The length direction, width direction, and height direction of the outer shell 1a are the same as direction d1, direction d2, and direction d3 respectively. Specifically, the outer shell 1a includes a first outer half-shell 1-1a and a second outer half-shell 1-2a that are spliced together along direction d2.

[0056] Further, as Figure 1-2, 4, and 6, the first circuit includes an operating system, a contact system 11b, and an arc extinguishing system. The operating system includes a handle 1b and an operating mechanism 7b. The handle 1b is slidably arranged in the housing (specifically, the handle 1b is slidably arranged in the housing 1a) and switches between the handle closing position and the handle opening position by reciprocating sliding. The contact system 11b includes a moving contact 11-1b and a stationary contact 11-2b used in conjunction with each other. The handle 1b is transmission-connected to the operating mechanism 7b, and the operating mechanism 7b is transmission-connected to the moving contact 11-1b. When the handle 1b slides to the handle closing position, the handle 1b switches to the handle opening position through the operating mechanism The mechanism 7b drives the moving contact 11-1b to the closed position and closes with the static contact 11-2b, that is, the switch device completes the closing operation, and the operating mechanism 7b and the switch device switch from the open state to the closed state; when the handle 1b slides to the handle open position, the handle 1b drives the moving contact 11-1b to the disconnected position through the operating mechanism 7b and disconnects with the static contact 11-2b, that is, the switch device completes the opening operation, and the operating mechanism 7b and the switch device switch from the closed state to the open state; the arc extinguishing system cooperates with the contact system 11b to extinguish the arc generated by the closing and disconnection of the contact system 11b. The handle 1b is pressed by an external force to slide into the housing 1a and switch to the handle closing position, and the handle 1b is pulled by an external force to slide outside the housing 1a and switch to the handle opening position.

[0057] Further, such as Figure 2 , 4 As shown, the moving contact 11 - 1b and the stationary contact 11 - 2b are arranged opposite to each other along the direction d2.

[0058] Specifically, the moving contact 11 - 1b includes a moving contact plate 11 - 11b and a moving contact point 11 - 12b. One end of the moving contact plate 11 - 11b is transmission-connected to the operating mechanism 7b and the other end is provided with the moving contact point 11 - 12b.

[0059] Specifically, the static contact 11-2b includes a static contact plate 11-22b and a static contact point 11-21b. The static contact plate 11-22b includes a first section of the static contact plate 11-221b, a second section of the static contact plate 11-222b, and a third section of the static contact plate 11-223b that are bent and connected in sequence. The static contact point 11-21b is disposed on the first section of the static contact plate 11-221b. The first section of the static contact plate 11-221b and the third section of the static contact plate 11-223b are oppositely disposed along the direction d2 and are bent toward the same side of the second section of the static contact plate 11-222b. That is, the static contact plate 11-22b is integrally in a U-shaped structure. The first section of the static contact plate 11-221b and the third section of the static contact plate 11-223b are respectively bent and connected to both ends of the second section of the static contact plate 11-222b. The first section of the static contact plate 11-221b and the third section of the static contact plate 11-223b are located on the same side of the second section of the static contact plate 11-222b. The third section of the static contact plate 11-223b and the static contact point 11-21b are respectively located on both sides of the first section of the static contact plate 11-221b in the direction d2.

[0060] Further, as Figure 2-5As shown, the operating mechanism 7b includes a second rotating shaft 7-2b, a rear connecting rod 7-3b, a first rotating shaft structure 7r and a main reset member 7-8b. The second rotating shaft 7-2b is rotatably arranged, and the handle 1b is driven to rotate in cooperation with the second rotating shaft 7-2b (i.e., the handle 1b switches between the handle closing position and the handle opening position by reciprocating sliding to drive the second rotating shaft 7-2b to reciprocate, and the second rotating shaft 7-2b switches between the second rotating shaft closing position and the second rotating shaft opening position). -2b drives the first rotating shaft structure 7r to rotate through the rear connecting rod 7-3b and the first rotating shaft structure 7r (that is, the second rotating shaft 7-2b switches between the second rotating shaft closing position and the second rotating shaft opening position through the reciprocating rotation and drives the first rotating shaft structure 7r to reciprocate through the rear connecting rod 7-3b, and the first rotating shaft structure 7r switches between the first rotating shaft structure closing position and the first rotating shaft structure opening position), and the first rotating shaft structure 7r includes a third connecting rod 7-5b that is respectively rotatably arranged and snap-fitted. The first rotating shaft structure 7r is connected to the moving contact 11-1b by transmission, and the main reset member 7-8b acts on the first rotating shaft structure 7r to make it have a rotation tendency to drive the moving contact 11-1b to move to the disconnected position, that is, the main reset member 7-8b acts on the first rotating shaft structure 7r to make it have a tendency to rotate toward the opening position of the first rotating shaft structure. For example, when the handle 1b drives the operating mechanism 7b to perform the opening operation or after the operating mechanism 7b is tripped, the main reset member 7-8b moves to the first rotating shaft structure 7r applies a force to make it rotate toward the opening position of the first rotating shaft structure, thereby driving the moving contact 11-1b to move toward the disconnected position; when the operating mechanism 7b is normally opened and closed (that is, when the second rotating shaft 7-2b is driven by an external force - the external force comes from the handle 1b or the electric reclosing mechanism 8b mentioned later - and drives the moving contact 11-1b and the static contact 11-2b to close and disconnect through the first rotating shaft structure 7r), the third connecting rod 7-5b and the locking component 7-6b maintain a snap fit. Further, the operating mechanism 7b also includes a front connecting rod 7-1b, and the handle 1b is connected to the second rotating shaft 7-2b through the front connecting rod 7-1b to drive the second rotating shaft 7-2b to rotate.Furthermore, the first rotating shaft structure 7r also includes a first rotating shaft 7-4b and a locking spring 7-7b that are rotatably arranged. The first rotating shaft structure 7r is rotatably arranged through the first rotating shaft 7-4b. The third connecting rod 7-5b and the locking component 7-6b are rotatably arranged on the rotating shaft 7-4b respectively. The second rotating shaft 7-2b is transmission-connected with the third connecting rod 7-5b through the rear connecting rod 7-3b. The first rotating shaft 7-4b is transmission-connected with the moving contact 11-1b. The main reset member 7-8b acts on the first rotating shaft 7-4b so that the first rotating shaft structure 7r has the function of driving the moving contact. The main reset member 7-8b applies a force to the first rotating shaft 7-4b when the handle 1b drives the operating mechanism 7b to perform the opening operation and after the operating mechanism 7b is tripped, so that the first rotating shaft structure 7r drives the moving contact 11-1b to move to the disconnected position and disconnects from the static contact 11-2b. The locking spring 7-7b acts on the locking member 7-6b to make it have a tendency to rotate relative to the first rotating shaft 7-4b and ensure that the locking member 7-6b and the third connecting rod 7-5b are reliably snap-fitted. Further, the first rotating shaft 7-4b includes a first rotating shaft mating portion 7-42b arranged on its circumferential side wall, and the main reset member 7-8b is a compression spring, one end of which is mated with the first rotating shaft mating portion 7-42b, and the other end is mated with the housing. Furthermore, the rotation directions of the second rotation axis 7-2b, the first rotation axis structure 7r, the first rotation axis 7-4b, the third connecting rod 7-5b and the locking component 7-6b are all the same as the direction d3.

[0061] Specifically, the handle 1b includes a handle connecting protrusion 1-5b, the handle connecting protrusion 1-5b is rotatably connected to one end of the front connecting rod 7-1b, and the other end of the front connecting rod 7-1b is rotatably connected to the third connecting rod 7-5b. The lock spring 7-7b is a torsion spring sleeved on the rotating shaft of the lock component 7-6b, and its two spring arms are respectively matched with the lock component 7-6b and the first rotating shaft 7-4b.

[0062] Further, as shown in 2-5, the operating mechanism 7b also includes a second rotating shaft reset member 7-9b, which acts on the second rotating shaft 7-2b to make it have a rotation tendency to drive the operating mechanism 7b to open the gate, that is, the second rotating shaft reset member 7-9b acts on the second rotating shaft 7-2b to make it have a tendency to rotate toward the second rotating shaft opening position.

[0063] Specifically, the second rotating shaft reset member 7-9b is a torsion spring, which is sleeved on the rotating shaft of the second rotating shaft 7-2b. One spring arm cooperates with the second rotating shaft 7-2b, and the other spring arm is fixedly arranged (for example, this spring arm cooperates with the housing to achieve fixed arrangement). Further, the housing further includes a first shaft column 2-13a and a first spring limiting portion 2-11a and a second spring limiting portion 2-12a arranged around the first shaft column 2-13a. One end of the rotating shaft of the second rotating shaft 7-2b is inserted into the first shaft column 2-13a. The second rotating shaft 7-2b includes a second rotating shaft hole provided therein with an open end facing the first shaft column 2-13a and an energy storage cooperation portion 7-24b provided on the inner side wall of the second rotating shaft hole. The helix 7-90b of the second rotating shaft reset member 7-9b, the first spring limiting portion 2-11a, and the second spring limiting portion 2-12a are all located in the second rotating shaft hole. One spring arm cooperates with the first spring limiting portion 2-11a and this spring arm is the fixed arm 7-91b, and the other spring arm cooperates with the second spring limiting portion 2-12a and the spring arm is the moving arm 7-92b; when the switch device is closed (that is, when the operating mechanism 7b performs the closing operation), the second rotating shaft 7-2b rotates towards the closing position of the second rotating shaft (that is, in the direction as shown in Figure 3 ), when the second rotating shaft 7-2b rotates counterclockwise), it drives the moving arm 7-92b to move through the energy storage cooperation portion 7-24b to store energy in the second rotating shaft reset member 7-9b, and the second rotating shaft 7-2b finally rotates to the closing position of the second rotating shaft; when the switch device is opened (that is, when the operating mechanism 7b performs the opening operation), the second rotating shaft reset member 7-9b releases energy and presses against the energy storage cooperation portion 7-24b through the moving arm 7-92b to make the second rotating shaft 7-2b rotate towards the opening position of the second rotating shaft (that is, as shown in Figure 6In the shown direction (the second rotating shaft 7-2b rotates clockwise), the second rotating shaft 7-2b finally rotates to the opening position of the second rotating shaft. Further, when the switching device opens, the moving arm 7-92b finally acts to cooperate with the second spring limiting part 2-12a; when the switching device is in the open state (i.e., the operating mechanism 7b is in the open state), the second rotating shaft 7-2b is at the opening position of the second rotating shaft, the moving arm is in limiting cooperation with the second spring limiting part 2-12a, the energy storage cooperation part 7-24b and the moving arm 7-92b are only in contact with each other without acting force or there is a gap between them, which is convenient for the first rotating shaft 7-4b to be installed in place without overcoming the acting force of the second rotating shaft reset part 7-9b. Further, the second rotating shaft 7-2b further includes a tripping positioning part 7-22b and a closing positioning part 7-23b, which are arranged around the rotation center of the second rotating shaft 7-2b. The first spring limiting part 2-11a is located between the tripping positioning part 7-22b and the closing positioning part 7-23b in the rotation direction of the second rotating shaft 7-2b. When the switching device completes tripping (i.e., when the second rotating shaft 7-2b is at the opening position of the second rotating shaft), the tripping positioning part 7-22b is in limiting cooperation with the first spring limiting part 2-11a. When the switching device completes closing (i.e., when the second rotating shaft 7-2b is at the closing position of the second rotating shaft), the closing positioning part 7-23b is in limiting cooperation with the first spring limiting part 2-11a. The tripping positioning part 7-22b and the closing positioning part 7-23b cooperate with the first spring limiting part 2-11a to reliably and accurately limit the rotation stroke of the second rotating shaft 7-2b, ensuring the reliable and stable operation of the operating mechanism 7b. Further, both the tripping positioning part 7-22b and the closing positioning part 7-23b are arranged on the inner side wall of the second rotating shaft hole.

[0064] As Figure 10-11 shown, a kind of assembly method of the first rotating shaft 7-4b and the moving contact 11-1b is as follows:

[0065] One end of the moving contact 11-1b is inserted into the first rotating shaft 7-4b, and the moving contact 11-1b is rotatably arranged relative to the first rotating shaft 7-4b; the operating system further includes a contact spring 7-10b, and the contact spring 7-10b acts on the moving contact 11-1b to limit and cooperate with the first rotating shaft 7-4b. When the moving contact 11-1b is closed with the static contact 11-2b, the moving contact 11-1b rotates relative to the first rotating shaft 7-4b to compress the contact spring 7-10b, and the acting force of the contact spring 7-10b makes the moving contact 11-1b and the static contact 11-2b contact reliably; the first rotating shaft 7-4b includes a first rotating shaft main body 7-41b, the first rotating shaft main body 7-41b includes a contact spring installation groove 7-411b arranged therein, the contact spring installation groove 7-411b is provided with an installation groove opening for the contact spring 7-10b to be inserted therein, the installation groove opening is arranged at one axial end of the first rotating shaft 7-4b (specifically, one axial end of the first rotating shaft main body 7-41b), the contact spring 7-10b is arranged in the contact spring installation groove 7-411b and cooperates with the moving contact 11-1b and the first rotating shaft 7-4b respectively; the side wall of the contact spring installation groove 7-411b is the installation groove side wall 7-416b, and the installation groove side wall 7-416b is provided with a moving contact insertion hole 7-415b for the moving contact 11-1b to pass through. When the moving contact 11-1b rotates relative to the first rotating shaft 7-4b, it swings in the moving contact insertion hole 7-415b. The first rotating shaft structure 7r further includes a protection plate 7-11b arranged on the moving contact 11-1b and moving synchronously with it, and the protection plate 7-11b always blocks the moving contact insertion hole 7-415b, that is, when the moving contact 11-1b is relatively stationary with the first rotating shaft 7-4b, the protection plate 7-11b blocks the moving contact insertion hole 7-415b, and when the moving contact 11-1b rotates relative to the first rotating shaft 7-4b, the protection plate 7-11b also blocks the moving contact insertion hole 7-415b. Further, the shape of the moving contact insertion hole 7-415b is adapted to the moving track when the moving contact 11-1b rotates relative to the first rotating shaft 7-4b, and the contact spring 7-10b acts on the moving contact 11-1b to limit and cooperate with one end of the moving contact insertion hole 7-415b. In order to realize the assembly of the moving contact 11-1b and the first rotating shaft 7-4b, the dimension of the moving contact insertion hole 7-415b in the axial direction of the first rotating shaft 7-4b must satisfy that one end of the moving contact 11-1b provided with the moving contact point 11-12b can pass through smoothly.

[0066] The benefits brought by the protection plate 7-11b are as follows: it can effectively prevent or significantly reduce the entry of charged particles into the contact spring installation groove 7-411b, thereby avoiding or significantly reducing the damage to the contact spring 7-10b and other components, and ensuring the reliable closing of the moving contact 11-1b and the static contact 11-2b.

[0067] Specifically, the third link 7-5b and the latch member 7-6b are both provided at one axial end of the first rotating shaft 7-4b (specifically, at one axial end of the first rotating shaft body 7-41b), and the contact spring installation groove 7-411b is provided at the other axial end of the first rotating shaft 7-4b (specifically, at the other axial end of the first rotating shaft body 7-41b); the contact spring installation groove 7-411b has an annular side wall.

[0068] Specifically, the side wall of the installation groove 7-416b further includes a protective plate installation groove 7-412b for the protective plate 7-11b to be movably arranged therein, and the protective plate installation groove 7-412b is located on the radial side of the contact spring installation groove 7-411b. Further, the protective plate 7-11b is an arc-shaped plate, and a protective plate installation hole 7-111b is provided in the middle thereof. The protective plate 7-11b is sleeved on the moving contact 11-1b through the anti-slip plate installation hole 7-111b, and the shape of the anti-slip plate installation hole 7-111b is adapted to the moving contact 11-1b to minimize the gap between the moving contact 11-1b and the side edge of the anti-slip plate installation hole 7-111b; the protective plate installation groove 7-412b is an arc-shaped groove.

[0069] Specifically, the contact spring 7-10b is a torsion spring. The first rotating shaft 7-4b includes a central column 7-414b disposed in the contact spring mounting groove 7-411b. The torsion spring is sleeved on the central column 7-414b, and its two spring arms are respectively engaged with the first rotating shaft 7-4b and the moving contact 11-1b. The contact spring 7-10b acts on the moving contact 11-1b to limit the cooperation between the moving contact 11-1b and the first rotating shaft 7-4b. When the switch device of the present invention is closed, the first rotating shaft 7-4b drives the moving contact 11-1b to rotate until the moving contact 11-1b contacts and conducts with the static contact 11-2b. The first rotating shaft 7-4b continues to rotate by a certain angle, causing the first rotating shaft 7-4b and the moving contact 11-1b to rotate relative to each other and storing energy in the contact spring 7-10b to achieve an overtravel. The force exerted by the contact spring 7-10b on the moving contact 11-1b ensures a reliable closure between the moving contact 11-1b and the static contact 11-2b. When the switch device of the present invention is opened, the first rotating shaft 7-4b and the moving contact 11-1b first rotate relative to each other. The moving contact 11-1b returns to the limit cooperation with the first rotating shaft 7-4b under the action of the contact spring 7-10b, and then the moving contact 11-1b moves to the open position under the drive of the first rotating shaft 7-4b. Further, the central column 7-414b is coaxially disposed with the first rotating shaft 7-4b. Further, the central column 7-414b also serves as the rotating shaft of the first rotating shaft 7-4b and is rotatably connected to the housing. Further, the rotation center of the moving contact 11-1b relative to the first rotating shaft 7-4b coincides with the rotation center of the first rotating shaft 7-4b, and the moving contact 11-1b is rotatably sleeved on the central column 7-414b. Further, the side wall 7-416b of the mounting groove is further provided with a moving contact moving groove 7-413b, and one end of the moving contact 11-1b ( Figure 10The free end of the moving contact plate connection section 11-111b of the moving contact 11-1b shown is used to be connected to a wire to connect the moving contact 11-1b to the corresponding circuit, and this end of the moving contact 11-1b is movably arranged in the moving contact slot 7-413b; during assembly, the end of the moving contact 11-1b provided with the moving contact point 11-12 passes through the moving contact jack 7-415b, and the moving contact 11-1b is sleeved on the central column 7-414b, so that the free end of the moving contact plate connection section 11-111b is placed in the moving contact slot 7-413b. Further, the moving contact jack 7-415b and the moving contact slot 7-413b are arranged at the axial two ends of the first rotating shaft 7-4b. Further, the moving contact plate 11-11b of the moving contact 11-1b includes a moving contact plate bearing section 11-112b and a moving contact plate connection section 11-111b. One end of the moving contact plate bearing section 11-112b is connected to one end of the moving contact plate connection section 11-111b, and a moving contact shaft hole is provided at the connection part. The moving contact 11-1b is sleeved on the central column 7-414b through the moving contact shaft hole. The other end of the moving contact plate bearing section 11-112b is provided with a moving contact point 11-12b, and the other end of the moving contact plate connection section 11-111b is movably arranged in the moving contact slot 7-413b.

[0070] Further, as Figure 2 、 4 shown, the operating system further includes an automatic reclosing mechanism 8b, and the automatic reclosing mechanism 8b is in transmission cooperation with the handle 1b or the second rotating shaft 7-2b to drive the operating mechanism 7b to trip and close. In this embodiment, the automatic reclosing mechanism 8b is preferably in transmission cooperation with the second rotating shaft 7-2b. The automatic reclosing mechanism 8b is beneficial to realizing the remote closing and remote tripping of the switch device of the present invention.

[0071] Further, as Figure 2 、 4 、6 shown, the switch device further includes a first wiring device and a second wiring device arranged in the housing. Among the first wiring device and the second wiring device, one is an incoming line wiring device and the other is an outgoing line wiring device; the first wiring device includes a first negative wiring device and a first positive wiring device, and the second wiring device includes a second negative wiring device and a second positive wiring device. The first negative wiring device and the second negative wiring device are respectively connected in series at both ends of the first circuit (i.e., the negative circuit), that is, the first circuit is connected to the corresponding external circuit through the first negative wiring device and the second negative wiring device. The first positive wiring device and the second positive wiring device are respectively connected in series at both ends of the second circuit (i.e., the positive circuit / direct-through circuit), and the second circuit is connected to the corresponding external circuit through the first positive wiring device and the second positive wiring device.

[0072] Specifically, the first wiring device and the second wiring device are respectively arranged at two ends of the housing. The second wiring device is a plug-in wiring device, such as a bus bar clamp.

[0073] Further, as Figure 7 shown, the first circuit further includes a first connection plate 14b. The first negative electrode wiring device, the first connection plate 14b, the contact system 11b, and the second negative electrode wiring device are connected in series in sequence. Specifically, the first negative electrode wiring device, the first connection plate 14b, the moving contact 11-1b, the static contact 11-2b, and the second negative electrode wiring device are connected in series in sequence. Further, the first connection plate 14b is a metal conductive plate.

[0074] Further, as Figure 6-7 shown, the first circuit further includes a manganin shunt 13b. The manganin shunt 13b is preferably connected in series between the contact system 11b and the second negative electrode wiring device; specifically, the manganin shunt 13b is connected in series between the static contact 11-2b and the second negative electrode wiring device. Further, the first circuit further includes a second connection plate 18b. The manganin shunt 13b is electrically connected to the static contact plate 11-22b of the static contact 11-2b through the second connection plate 18b. Further, the manganin shunt 13b and the second connection plate 18b are preferably of an integral structure, and the two are bent and connected; the second connection plate 18b and the third section 11-223b of the static contact plate of the static contact plate 11-22b are stacked and fixed together in the direction d2 and are electrically connected.

[0075] Further, as Figure 7 shown, the second circuit further includes a second connection plate 1c. The first positive electrode wiring device, the second connection plate 1c, and the second positive electrode wiring device are connected in series in sequence. Further, the second connection plate 1c is a metal conductive plate.

[0076] Further, as Figure 2 、 4 、6, 8-9 shown, the operating system further includes a thermal release mechanism 9b and / or a magnetic release mechanism 10b. The thermal release mechanism 9b and / or the magnetic release mechanism 10b are used to respectively drive the locking component 7-6b to rotate and release the latching cooperation with the third connecting rod 7-5b when an overload fault and / or a short-circuit fault occurs in the circuit where the switching device is located (which is also the circuit where the contact system 11b, the moving contact 11-1b, and the static contact 11-2b are located), so that the operating mechanism 7b trips; as Figure 8 (81) shown, when a short-circuit fault occurs in the circuit where the switching device of the present invention is located, the locking component 7-6b is rotated by the magnetic release 10b, so that the locking component 7-6b releases the latching cooperation with the third connecting rod 7-5b. At this time, the moving contact 11-1b and the static contact 11-2b have not been disconnected; as Figure 8As shown in , when an overload fault occurs in the circuit where the switching device of the present invention is located, the locking member 7-6b is driven by the thermal release mechanism 9b to rotate, so that the locking member 7-6b is disengaged from the third link 7-5b. At this time, the moving contact 11-1b and the static contact 11-2b have not been disconnected. Further, the locking member 7-6b includes a first engaging arm 7-62b and a second engaging arm 7-63b. The thermal release mechanism 9b is in transmission cooperation with the first engaging arm 7-62b to drive the locking member 7-6b to rotate and disengage it from the third link 7-5b when an overload fault occurs in the circuit where the switching device is located. The magnetic release mechanism 10b is in transmission cooperation with the second engaging arm 7-63b to drive the locking member 7-6b to rotate and disengage it from the third link 7-5b when a short-circuit fault occurs in the circuit where the switching device is located. Further, the locking member 7-6b further includes a locking body 7-61b. The locking member 7-6b is rotatably arranged on the first rotating shaft 7-4b of the first rotating shaft structure 7r through the locking body 7-61b. The first engaging arm 7-62b and the second engaging arm 7-63b are respectively connected to the locking body 7-61b.

[0077] Further, as Figure 14 shown, the locking member 7-6b includes a locking part 7-612b and a force-receiving part 7-64b that are fixed together and rotate coaxially and synchronously; the locking part 7-612b is used for latching cooperation with the third link 7-5b. The third link 7-5b and the locking part 7-612b are metal parts with high structural strength and long service life; the force-receiving part 7-64b includes a force-receiving part body 7-611b, a first engaging arm 7-62b, and a second engaging arm 7-63b. One ends of the first engaging arm 7-62b and the second engaging arm 7-63b are respectively connected to the force-receiving part body 7-611b, and the other ends are respectively in transmission cooperation with the thermal release mechanism 9b and the magnetic release mechanism 10b; the force-receiving part 7-64b is an insulating part with good insulation, which is beneficial to improving the insulation performance of the operating mechanism 7b; the locking part 7-612b and the force-receiving part body 7-611b cooperate to form the locking body 7-61b. Further, the locking part 7-612b and the force-receiving part body 7-611b are stacked along the rotation axis direction of the locking member 7-6b.

[0078] Further, the thermal release mechanism 9b and the magnetic release mechanism 10b are arranged side by side along the direction d1, and both are arranged on the same side of the operating mechanism 7b. The layout is more reasonable and compact, which is beneficial to reducing the space occupied by the thermal release mechanism 9b and the magnetic release mechanism 10b. Specifically, the thermal release mechanism 9b and the magnetic release mechanism 10b are arranged on the same side of the operating mechanism 7b along the direction d2.

[0079] Specifically, as Figure 8-9As shown in Fig. 12, the thermal release mechanism 9b includes a bimetal sheet 9-1b, and the thermal release mechanism 9b is connected in series between the first connection plate 14b and the contact system 11b. Further, the thermal release mechanism 9b includes a bimetal assembly 9-123b and a traction rod 9-5b. The traction rod 9-5b is rotatably arranged and the axis direction is the same as the direction d3. The traction rod 9-5b includes a first traction rod arm 9-52b and a second traction rod arm 9-53b. One end of the bimetal assembly 9-123b is fixedly arranged and the other end is in driving cooperation with the first traction rod arm 9-52b of the traction rod 9-5b to drive the traction rod 9-5b to rotate. The second traction rod arm 9-53b is in driving cooperation with the first mating arm 7-62b of the latch member 7-6b to drive the latch member 7-6b to rotate, so that the latch member 7-6b is disengaged from the latching cooperation with the third link 7-5b. Further, the traction rod 9-5b further includes a traction rod mounting portion 9-51b. The traction rod 9-5b is rotatably arranged through the traction rod mounting portion 9-51b. The axis direction of the traction rod 9-5b is the same as the direction d3. One ends of the first traction rod arm 9-52b and the second traction rod arm 9-53b are connected to the traction rod mounting portion 9-51b and are circumferentially distributed along the traction rod 9-5b. Further, the bimetal assembly 9-123b includes a bimetal sheet 9-1b, a connector 9-2b and an adjusting screw 9-3b. The length of the bimetal sheet 9-1b extends along the direction d1. One end is fixedly arranged and the other end is inserted into the connector 9-2b. The connector 9-2b is a plastic part. The adjusting screw 9-3b is a self-tapping screw and is arranged on the connector 9-2b. The adjusting screw 9-3b is in driving cooperation with the first traction rod arm 9-52b of the traction rod 9-5b. The adjusting screw 9-3b facilitates adjusting the driving gap between the bimetal assembly 9-123b and the first traction rod arm 9-52b of the traction rod 9-5b according to actual needs. In the prior art, the adjusting screw 9-3b is directly arranged on the bimetal sheet 9-1b. After adjusting the position of the adjusting screw 9-3b through testing, thread sealant is applied to fix the adjusting screw 9-3b and the bimetal sheet 9-1b together. The adjusting screw 9-3b cannot be adjusted again, and then the housing assembly is completed. In this embodiment, the adjusting screw 9-3b is arranged on the connector 9-2b. After the switch device in this embodiment is assembled, the adjusting screw 9-3b can be adjusted again. The cooperation between the adjusting screw 9-3b and the connector 9-2b can ensure that the adjusting screw 9-3b is stably and reliably maintained at the working position, so that the thermal release mechanism 9b can reliably, timely and accurately drive the operating mechanism 7b to trip.Further, the bimetal sheet 9-1b is provided with a bimetal avoidance hole 9-11b for avoiding the adjusting screw 9-3b; the connector 9-2b includes a connector insertion hole 9-21b provided therein and connector holes 9-22b provided on a pair of side walls of the connector insertion hole 9-21b; the aperture of the bimetal avoidance hole 9-11b is larger than the aperture of the connector hole 9-22b and the outer diameter of the adjusting screw 9-3b, and the aperture of the connector hole 9-22b is smaller than the outer diameter of the adjusting screw 9-3b, so as to prevent interference between the adjusting screw 9-3b and the bimetal sheet 9-1b when the adjusting screw 9-3b is screwed, and ensure that the adjusting screw 9-3b is reliably held in the working position after adjustment; one end of the bimetal sheet 9-1b is inserted into the connector insertion hole 9-21b, so that the bimetal avoidance hole 9-11b and the connector hole 9-22b are correspondingly matched.

[0080] Specifically, as Figure 8-9 shown in FIGS. 11 and 12, the thermal release mechanism 9b further includes a thermal element 9-4b. One end of the bimetal sheet 9-1b is fixedly installed on the thermal element 9-4b. The thermal element 9-4b is in limit fit with the housing for realizing the fixed installation of the bimetal assembly 9-123b, and is also used for being electrically connected to the first connection plate 14b. Further, the first circuit further includes a first connection plate 17b. The first connection plate 14b is electrically connected to the thermal element 9-4b through the first connection plate 17b. Further, the first connection plate 14b and the first connection plate 17b are preferably of an integral structure, and the two are bent and connected; the first connection plate 17b and the thermal element 9-4b are stacked and fixed together in the direction d2 and are electrically connected. Further, the thermal element 9-4b is in a plate-like structure, and the plane where it is located and the first connection plate 17b are both perpendicular to the direction d2.

[0081] Further, as Figure 1 shown in FIG. 13, the housing of the switch device of the present invention is further provided with an adjustment hole for operating the adjusting screw 9-3b; specifically, the adjustment hole includes an outer adjustment hole 1-6a provided on the outer shell 1a; the switch device of the present invention further includes a hole cover 3a for blocking the outer adjustment hole 1-6a. After the operator completes the adjustment of the position of the adjusting screw 9-3b, the hole cover 3a is covered on the outer adjustment hole 1-6a.

[0082] Specifically, as Figure 8-9As shown in FIGS. 13, the magnetic trip mechanism 10b is an electromagnetic trip mechanism, which includes an armature member 10-1b, a yoke member 10-2b, an armature return spring 10-3b, and a conductive plate that are used in cooperation. The armature return spring 10-3b acts on the armature member 10-1b to give it a tendency to move away from the yoke member 10-2b. The conductive plate is used to be connected in series in the circuit to be disconnected (in this embodiment, the first circuit is the circuit to be disconnected, and the conductive plate is realized by the static contact plate 11-22b of the static contact 11-2b), and at least part of it is inserted into the yoke member 10-2b. When a short-circuit current flows through the circuit to be disconnected, an electromagnetic field is generated, and the armature member 10-1b is attracted by the yoke member 10-2b. The armature member 10-1b drives the latch member 7-6b to rotate so that it is disengaged from the third link 7-5b.

[0083] Further, the armature member 10-1b and the yoke member 10-2b are arranged oppositely along the direction d1, and the armature member 10-1b reciprocates along the direction d1 to be attracted to and separated from the yoke member 10-2b. Further, the second section 11-222b of the static contact plate of the static contact plate 11-22b passes through the middle of the yoke member 10-2b, and the first section 11-221b and the third section 11-223b of the static contact plate are respectively located on both sides of the yoke member 10-2b along the direction d2.

[0084] Further, the magnetic trip mechanism 10b further includes an armature guide rod 10-4b, and the armature guide rod 10-4b cooperates with the armature member 10-1b to guide the armature member 10-1b.

[0085] Specifically, one end of the armature guide rod 10-4b is fixedly connected to the armature member 10-1b, and the other end is slidably arranged in the armature guide hole on the bottom wall of the yoke member of the yoke member 10-2b. The armature guide hole is formed by splicing the guide holes provided on the conductive plate, the yoke bottom plate, and the magnetic flux enhancing plate 10-22b along the direction d1. The armature return spring 10-3b is a compression spring, which is sleeved on the armature guide rod 10-4b and cooperates with the armature member 10-1b and the conductive plate at both ends respectively.

[0086] As another embodiment of the armature guide rod 10-4b, a set of armature guide rods 10-4b are arranged on each of the two yoke arms of the yoke member 10-2b. The armature guide rods 10-4b extend along the direction d1 and one end is connected to the yoke arm. The armature member 10-1b includes armature sliding holes or armature sliding grooves that cooperate with the two sets of armature guide rods 10-4b.

[0087] Further, the armature member 10-1b includes a main armature 10-11b and a secondary armature 10-12b. The main armature 10-11b includes a main armature plate 10-111b and an armature transmission arm 10-112b. One end of the armature transmission arm 10-112b is bent and connected to the main armature plate 10-111b, and the other end is used to output a driving force for driving the latch member 7-6b to rotate so as to release the latching fit with the third link 7-5b. The main armature plate 10-111b and the secondary armature 10-12b are stacked along the direction d1. The structural design of the armature member 10-1b can reduce the thickness requirement for the main armature 10-11b, reduce the forming difficulty of the armature transmission arm 10-112b, and facilitate processing. The cooperation between the secondary armature 10-12b and the main armature 10-11b ensures the reliable cooperation between the armature member 10-1b and the yoke member 10-2b. The number of the secondary armatures 10-12b can be adjusted according to actual needs, and the number of the secondary armatures 10-12b ≥ 1. The secondary armature 10-12b and the main armature 10-11b are preferably of a split structure. In this embodiment, the secondary armature 10-12b is preferably arranged closer to the yoke member 10-2b relative to the main armature plate 10-111b of the main armature 10-11b. The armature transmission arm 10-112b includes a transmission arm connecting plate 10-1121b and a transmission arm driving plate 10-1122b. The transmission arm connecting plate 10-1121b extends along the direction d1, one end is bent and connected to the main armature plate 10-111b, and the other end is bent and connected to the transmission arm driving plate 10-1122b. The transmission arm driving plate 10-1122b is arranged parallel to the main armature plate 10-111b.

[0088] As other embodiments of the armature member 10-1b, the main armature plate 10-111b and the secondary armature 10-12b are of an integral structure, and one end of the two is bent and connected. When the armature member 10-1b includes a plurality of secondary armatures 10-12b, adjacent secondary armatures 10-12b are bent and connected to each other.

[0089] Further, as Figure 2 、 4 shown, the yoke member 10-2b is arranged close to the contact system 11b.

[0090] Further, the yoke member 10-2b includes a yoke bottom wall and yoke arms. The two yoke arms are arranged oppositely and are respectively bent and connected to both ends of the yoke bottom wall. The conductive plate is inserted between the two yoke arms and is stacked with the yoke bottom wall along the direction d1. Further, the yoke member 10-2b includes a yoke 10-21b and at least one magnetic flux enhancing plate 10-22b. The yoke 10-21b includes a yoke bottom plate and yoke arms. The two yoke arms are arranged oppositely and are respectively bent and connected to both ends of the yoke member. The yoke bottom plate is stacked with the magnetic flux enhancing plate 10-22b along the direction d1. The yoke bottom plate and the magnetic flux enhancing plate 10-22b together constitute the yoke bottom wall of the yoke member 10-2b. The yoke bottom plate and the magnetic flux enhancing plate 10-22b are preferably of a split structure. The magnetic flux enhancing plate 10-22b can increase the magnetic attraction force, improve the reliability of the cooperation between the armature member 10-1b and the yoke member 10-2b, and increase the magnetic field of the yoke member 10-2b, thereby accelerating the arc generated by the moving contact 11-1b and the static contact 11-2b into the arc extinguishing chamber 12-1b. Further, the conductive plate and the magnetic flux enhancing plate 10-22b are located on both sides of the yoke bottom plate in the direction d1, and the conductive plate, the yoke bottom plate and the magnetic flux enhancing plate 10-22b are fixedly connected together.

[0091] As other embodiments of the yoke member 10-2b, the magnetic flux enhancing plate 10-22b is not provided on the yoke member 10-2b; or, the yoke member 10-2b and the magnetic flux enhancing plate 10-22b are of an integral structure and are bent and connected to each other.

[0092] Specifically, as shown in Figure 2 、 4 Figures 8-9, the first mating arm 7-62b and the second mating arm 7-63b are arranged radially, that is, the extension lines of the first mating arm 7-62b and the second mating arm 7-63b both pass through the rotation center of the locking member 7-6b. One end of the first mating arm 7-62b is connected to the locking body 7-61b and the other end is used for driving cooperation with the thermal release mechanism 9b. One end of the second mating arm 7-63b is connected to the locking body 7-61b and the other end is used for driving cooperation with the magnetic release mechanism 10b; the first mating arm 7-62b and the second mating arm 7-63b are arranged offset along the direction d3 (which is also the rotation axis direction of the locking member 7-6b); the first mating arm 7-62b and the drive arm connecting plate 10-1121b are respectively located on both sides of the second mating arm 7-63b in the direction d3. The drive arm driving plate 10-1122b is located between the first mating arm 7-62b and the second mating arm 7-63b in the rotation direction of the locking member 7-6b. The free end of the drive arm driving plate 10-1122b is spaced from the first mating arm 7-62b in the direction d3 to prevent interference between the first mating arm 7-62b and the drive arm driving plate 10-1122b when the locking member 7-6b rotates, which affects the tripping of the operating mechanism 7b.

[0093] Specifically, as Figure 13 shown, the armature member 10-1b further includes an armature avoidance notch for avoiding the second mating arm 7-63b when the latch member 7-6b is driven by the thermal release mechanism 9b to rotate.

[0094] Furthermore, the first connection plate 14b and the second connection plate 1c are respectively arranged at both inner ends of the housing 1a along the direction d3, so as to utilize more inner space of the housing 1a to increase the structural sizes of the first connection plate 14b and the second connection plate 1c, thereby increasing their current-carrying capacities.

[0095] Furthermore, the electric reclosing mechanism 8b is arranged between the handle 1b and the operating mechanism 7b in the direction d1.

[0096] Furthermore, the thermal release mechanism 9b and the magnetic release mechanism 10b are located on the same side of the operating mechanism 7b in the direction d2. The thermal release mechanism 9b and the magnetic release mechanism 10b are arranged side by side in the direction d1. The thermal release mechanism 9b, the magnetic release mechanism 10b, the first connection plate 17b, and the second connection plate 18b are located on the same side of the operating mechanism 7b in the direction d2. Furthermore, the bimetal sheet 9-1b of the thermal release mechanism 9b extends in the direction d1; the armature member 10-1b of the magnetic release mechanism 10b and the yoke member 10-2b are arranged side by side in the direction d1, and the armature member 10-1b is movably arranged in the direction d1; the bimetal sheet 9-1b, the armature member 10-1b, and the yoke member 10-2b are arranged in sequence in the direction d1.

[0097] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which it is usually placed during use, and is only for the convenience of description, rather than indicating that the device or element referred to must have a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be construed as indicating relative importance.

[0098] The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention belongs, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as belonging to the protection scope of the present invention.

Claims

1. A magnetic release mechanism, which comprises an armature member (10-1b), a yoke member (10-2b), an armature return spring (10-3b) and a conductive plate. The armature member (10-1b) moves linearly in the direction d1 to engage and disengage with the yoke member (10-2b). The armature return spring (10-3b) acts on the armature member (10-1b) to give it a tendency to move away from the yoke member (10-2b). The conductive plate is used to be connected in series in the circuit to be interrupted and at least part of it is inserted in the middle of the yoke member (10-2b). It is characterized in that: The armature member (10-1b) comprises a main armature (10-11b) and a sub-armature (10-12b). The main armature (10-11b) comprises a main armature plate (10-111b) and an armature transmission arm (10-112b). One end of the armature transmission arm (10-112b) is bent and connected to the main armature plate (10-111b), and the other end is used to output a driving force. The main armature plate (10-111b) and the sub-armature (10-12b) are stacked in the direction d1.

2. The magnetic trip mechanism according to claim 1, wherein: The yoke member (10-2b) comprises a yoke (10-21b) and at least one magnetic enhancement plate (10-22b). The yoke (10-21b) comprises a yoke bottom plate and yoke arms. The two yoke arms are arranged oppositely and are respectively bent and connected to both ends of the yoke bottom plate. The yoke bottom plate and the magnetic enhancement plate (10-22b) are stacked together in the direction d1.

3. The magnetic trip mechanism according to claim 2, characterized in that: The conductive plate and the magnetic enhancement plate (10-22b) are respectively located on both sides of the yoke bottom plate in the direction d1, and the conductive plate, the yoke bottom plate and the magnetic enhancement plate are fixedly connected together.

4. The magnetic tripping mechanism according to claim 1, wherein: The armature transmission arm (10-112b) comprises a transmission arm connecting plate (10-1121b) and a transmission arm driving plate (10-1122b). The transmission arm connecting plate (10-1121b) extends in the direction d1, one end is bent and connected to the main armature plate (10-111b), and the other end is bent and connected to the transmission arm driving plate (10-1122b). The transmission arm driving plate (10-1122b) is arranged parallel to the main armature plate (10-111b).

5. The magnetic trip mechanism according to claim 1, characterized in that: The magnetic release mechanism further comprises an armature guide rod (10-4b), and the armature guide rod (10-4b) cooperates with the armature member (10-1b) to guide the armature member (10-1b).

6. The magnetic trip mechanism according to claim 5, wherein: One end of the armature guide rod (10-4b) is fixedly connected to the armature member (10-1b), and the other end is slidably inserted into an armature guide hole on the bottom wall of the yoke member of the yoke member (10-2b).

7. The magnetic trip mechanism according to claim 6, characterized in that: The armature return spring (10-3b) is sleeved on the armature guide rod (10-4b), and both ends cooperate with the armature member (10-1b) and the conductive plate respectively.

8. An operating system, characterized in that: The operating system comprises the magnetic tripping mechanism according to any one of claims 1 to 7; the operating system further comprises an operating mechanism (7b), the operating mechanism (7b) comprises a second rotating shaft (7-2b) and a first rotating shaft structure (7r) which are respectively rotatably arranged, and a rear connecting rod (7-3b); the first rotating shaft structure (7r) comprises a first rotating shaft (7-4b) which is rotatably arranged, and a third connecting rod (7-5b) and a locking component (7-6b) which are respectively rotatably arranged on the first rotating shaft (7-4b) and snap-fitted; the second rotating shaft (7-2b), the first rotating shaft (7-4 b), the rotation axis direction of the third connecting rod (7-5b) and the locking component (7-6b) is the same as the direction d3, the direction d1 and the direction d3 are perpendicular to each other, the second rotating shaft (7-2b) is connected to the third connecting rod (7-5b) through the rear connecting rod (7-3b), and the first rotating shaft (7-4b) is used to be connected to the moving contact (11-1b) of the switch device; the magnetic release mechanism is used to drive the locking component (7-6b) to rotate through the armature transmission arm (10-112b) to release the locking fit with the third connecting rod (7-5b) when a short circuit occurs in the circuit where the switch device is located.

9. The operating system according to claim 8, characterized in that: The operating system further comprises a thermal release mechanism (9b), which is used to drive the locking component (7-6b) to rotate and release the locking engagement with the third connecting rod (7-5b) when an overload fault occurs in the circuit where the switch device is located; the thermal release mechanism (9b) and the magnetic release mechanism (10b) are arranged side by side along direction d1 and are both located on one side of the operating mechanism (7b) in direction d2, and directions d1, d2 and d3 are perpendicular to each other.

10. The operating system according to claim 9, wherein: The thermal release mechanism (9b) comprises a double-metal component (9-123b) and a rotatably arranged traction rod (9-5b); the double-metal component (9-123b) extends along a direction d1, one end of which is fixedly arranged and the other end of which drives a locking component (7-6b) to rotate via the traction rod (9-5b); the traction rod (9-5b) rotates in opposite directions to the locking component (7-6b); The bimetal component (9-123b) comprises a bimetallic strip (9-1b), a connecting piece (9-2b) and an adjusting screw (9-3b); the bimetallic strip (9-1b) extends along a direction d1, one end of which is fixedly arranged and the other end of which is inserted into the connecting piece (9-2b); the adjusting screw (9-3b) is arranged on the connecting piece (9-2b) and is threadedly connected thereto; the traction rod (9-5b) comprises a traction rod first arm (9-52b) and a traction rod second arm (9-53b); one end of the adjusting screw (9-3b) is in transmission cooperation with the traction rod first arm (9-52b) to drive the traction rod (9-5b) to rotate, and the other end of the adjusting screw (9-3b) is operated by an external force to drive the adjusting screw (9-3b) to rotate; the traction rod second arm (9-53b) is in transmission cooperation with the locking component (7-6b) to drive it to rotate; The bimetal sheet (9-1b) is provided with a bimetal avoidance hole (9-11b) for avoiding the adjusting screw (9-3b); the connecting piece (9-2b) includes a connecting piece jack (9-21b) arranged therein and connecting piece holes (9-22b) arranged on a pair of side walls of the connecting piece jack (9-21b); the aperture of the bimetal avoidance hole (9-11b) is larger than the aperture of the connecting piece hole (9-22b), and the aperture of the connecting piece hole (9-22b) is adapted to the adjusting screw (9-3b); one end of the bimetal sheet (9-1b) is inserted into the connecting piece jack (9-21b) and is in interference fit with the connecting piece (9-2b); One end of the bimetal assembly (9-123b) that cooperates with the traction rod (9-5b) is arranged close to the armature part (10-1b) of the electromagnetic tripping mechanism, and the traction rod (9-5b) is located between the bimetal assembly (9-123b) and the electromagnetic tripping mechanism in the direction d1; the rotation axis direction of the traction rod (9-5b) is the same as the direction d3; The latch component (7-6b) includes a latch main body (7-61b), a first mating arm (7-62b) and a second mating arm (7-63b). The latch component (7-6b) is rotatably arranged on the first rotating shaft (7-4b) through the latch main body (7-61b). The first mating arm (7-62b) and the second mating arm (7-63b) are arranged in a radial pattern, with one end connected to the latch main body (7-61b) respectively and the other end in transmission cooperation with the thermal tripping mechanism (9b) and the electromagnetic tripping mechanism respectively; the first mating arm (7-62b) and the second mating arm (7-63b) are arranged in a staggered manner in the direction d3. The first mating arm (7-62b) and the transmission arm connecting plate (10-1121b) of the armature transmission arm (10-112b) are located on both sides of the second mating arm (7-63b) in the direction d3. The transmission arm driving plate (10-1122b) is located between the first mating arm (7-62b) and the second mating arm (7-63b) in the rotation direction of the latch component (7-6b), and the free end of the transmission arm driving plate (10-1122b) is spaced from the first mating arm (7-62b) in the direction d3.

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