Operating mechanism and circuit breaker

Abstract

The invention discloses an operating mechanism and a circuit breaker, and relates to the technical field of low-voltage electric appliances. The operating mechanism comprises a shell and a button in sliding connection with the shell, a lock catch piece, a contact seat, a moving contact and a static contact are arranged in the shell, the lock catch piece is rotationally connected with the shell, the contact seat is in sliding connection with the shell, the moving contact is installed on the contact seat, the static contact is fixedly connected with the shell, and the button is in sliding connection with the contact seat. The button drives the moving contact and the static contact to be switched on or switched off, the lock catch piece is buckled with the contact base during switching on, and the lock catch piece is unlocked from the contact base during switching off. The operating mechanism and the circuit breaker can solve the problem of complex structure of the operating mechanism in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of low-voltage electrical appliances, and more specifically, to an operating mechanism and a circuit breaker. Background Art

[0002] A circuit breaker refers to a switching device that can close, carry, and interrupt the current under normal circuit conditions. With the rapid development of China's power and communication technologies, higher and higher requirements have been put forward for the practicality, safety, and reliability of terminal electrical equipment such as circuit breakers. Traditional circuit breakers can no longer meet these requirements. In the continuous research and development, circuit breakers have not only reached a new level in terms of miniaturization, intelligence, and reliability, but also many new designs have emerged in terms of structure, such as being able to be inserted and removed conveniently like an ordinary electrical plug, being able to be easily installed or removed from the circuit, being able to be locked in a stable working state at the installation position, and being able to meet various requirements of intelligence for power quality and automatic control. Such a circuit breaker is called a plug-in circuit breaker.

[0003] The circuit breakers in the prior art are mainly traditional mechanical circuit breakers, including structures such as an operating mechanism, contacts, and an arc extinguishing chamber. Among them, the operating mechanism includes a static contact, a moving contact that contacts or separates from the static contact, a handle connected to the moving contact, and components such as a latch, a trip latch, and an electromagnetic release that drive the movement of the moving contact, making the structure of the operating mechanism in the prior art complex. Summary of the Invention

[0004] An object of the present invention is to provide an operating mechanism and a circuit breaker, which can solve the problem of the complex structure of the operating mechanism in the prior art.

[0005] The embodiments of the present invention are implemented as follows:

[0006] In a first aspect of an embodiment of the present invention, an operating mechanism is provided, including a housing and a button slidably connected to the housing. A locking member, a contact seat, a moving contact, and a static contact are arranged in the housing. The locking member is rotatably connected to the housing, the contact seat is slidably connected to the housing, the moving contact is installed on the contact seat, the static contact is fixedly connected to the housing, the button is slidably connected to the contact seat, and the button drives the moving contact to close or open with the static contact. When closing, the locking member is latched with the contact seat, and when opening, the locking member is unlatched from the contact seat. This operating mechanism can solve the problem of the complex structure of the operating mechanism in the prior art.

[0007] Optionally, a first fastening portion and a first unlocking portion are provided on the locking member, a second fastening portion is provided on the contact head seat, and a second unlocking portion is provided on the button. When closing the switch, the second unlocking portion abuts against the first unlocking portion, and the button drives the contact head seat to slide relative to the housing so that the first fastening portion is fastened to the second fastening portion. When opening the switch, the button drives the second unlocking portion to slide and abut against the first unlocking portion, and the locking member rotates relative to the housing so that the first fastening portion is disengaged from the second fastening portion.

[0008] Optionally, the operating mechanism further includes a first elastic member. The first elastic member is sleeved on the rotating shaft where the locking member is rotatably connected to the housing. Two ends of the first elastic member respectively abut against the locking member and the housing. The first elastic member is used to provide a restoring force for the rotation of the locking member relative to the housing.

[0009] Optionally, the operating mechanism further includes a second elastic member connected to the button. The other end of the second elastic member abuts against the contact head seat for energy storage, or the other end of the second elastic member abuts against the locking member to release energy and force the locking member to be disengaged from the contact head seat.

[0010] Optionally, the operating mechanism further includes a third elastic member. Two ends of the third elastic member respectively abut against the contact head seat and the housing. The third elastic member is used to provide a restoring force for the sliding of the contact head seat relative to the housing.

[0011] Optionally, the moving contact includes a contact head body and a contact portion connected to the contact head body. An installation cavity is provided in the contact head seat. The contact head body is slidably accommodated in the installation cavity and exposes the contact portion. The contact portion is used to contact or separate from the static contact. A groove is provided on the contact head body, and an installation hole penetrating through to the installation cavity is provided on the side wall of the contact head seat. A fastener passes through the installation hole and extends into the groove to define the sliding stroke of the moving contact relative to the contact head seat.

[0012] Optionally, the moving contact further includes a connecting portion connected to one end of the contact head body away from the contact portion. The operating mechanism further includes a fourth elastic member. The fourth elastic member is accommodated in the installation cavity. Two ends of the fourth elastic member respectively abut against the connecting portion and the inner wall of the installation cavity away from the contact portion. The fourth elastic member is used to provide a pressing force for the movement of the moving contact towards the side close to the static contact.

[0013] Optionally, a first guiding portion is provided on the contact base, and a second guiding portion is provided on the housing. The first guiding portion is slidably connected to the second guiding portion so that the contact base is slidably connected to the housing. A first engaging portion is provided on the button, and a second engaging portion is provided on the contact base. The first engaging portion is engaged with the second engaging portion so that the button is engaged with the contact base.

[0014] Optionally, a mating end is provided on the locking member, and an electromagnetic release is further provided in the housing. The acting end of the electromagnetic release faces the mating end, and the electromagnetic release is configured to push the locking member to rotate relative to the housing according to a tripping signal so that the locking member is disengaged from the contact base.

[0015] In a second aspect of the embodiments of the present invention, a circuit breaker is provided, which includes the above-mentioned operating mechanism and a solid-state switch device disposed in the housing of the operating mechanism. The solid-state switch device includes a circuit board connected in series with the operating mechanism. A signal collector and a signal processor are provided on the circuit board. The signal collector collects a tripping signal and sends it to the signal processor, and the signal processor controls the operating mechanism to trip through the circuit board. This operating mechanism can solve the problem of complex structure of the operating mechanism in the prior art.

[0016] The beneficial effects of the embodiments of the present invention include:

[0017] The operating mechanism includes a housing and a button slidably connected to the housing. A locking member, a contact base, a moving contact, and a static contact are disposed in the housing. The locking member is rotatably connected to the housing, the contact base is slidably connected to the housing, the moving contact is mounted on the contact base, the static contact is fixedly connected to the housing, and the button is slidably connected to the contact base. The button drives the moving contact to close or trip with the static contact. When closing, the locking member is latched with the contact base, and when tripping, the locking member is disengaged from the contact base. By controlling the sliding direction of the button relative to the housing, the closing action and the tripping action of the operating mechanism can be correspondingly completed, which simplifies the movement form of the operating mechanism. In addition, the operating mechanism also locks the sliding of the contact base relative to the housing through the locking member, ensuring that the circuit breaker can be in a stable closing state, improving the stability and reliability of the circuit breaker. In addition, the operating mechanism reduces the components of the operating mechanism, simplifies the product structure of the operating mechanism, reduces the occupied space of the operating mechanism, and helps to meet the design requirements of miniaturization of the circuit breaker. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic structural diagram of the operating mechanism when it is closed for the embodiment of the present invention;

[0020] Figure 2 Schematic structural diagram of the operating mechanism when it is opened for the embodiment of the present invention;

[0021] Figure 3 Schematic three-dimensional structural diagram of the operating mechanism for the embodiment of the present invention;

[0022] Figure 4 For Figure 3 front view;

[0023] Figure 5 Schematic structural diagram of the housing for the embodiment of the present invention;

[0024] Figure 6 Schematic structural diagram of the button for the embodiment of the present invention;

[0025] Figure 7 One of the schematic structural diagrams of the contact seat for the embodiment of the present invention;

[0026] Figure 8 Another schematic structural diagram of the contact seat for the embodiment of the present invention;

[0027] Figure 9 One of the schematic structural diagrams of the locking fastener for the embodiment of the present invention;

[0028] Figure 10 Another schematic structural diagram of the locking fastener for the embodiment of the present invention;

[0029] Figure 11 Schematic diagram of the cooperation between the first unlocking part and the second unlocking part when the operating mechanism is closed for the embodiment of the present invention;

[0030] Figure 12 Schematic diagram of the cooperation between the first unlocking part and the second unlocking part during the opening process of the operating mechanism for the embodiment of the present invention;

[0031] Figure 13 Schematic diagram of the cooperation between the first unlocking part and the second unlocking part when the operating mechanism is opened for the embodiment of the present invention;

[0032] Figure 14Structural schematic diagram of the moving contact provided by the embodiment of the present invention;

[0033] Figure 15 One of the structural schematic diagrams of the operating mechanism provided by another embodiment of the present invention;

[0034] Figure 16 Is Figure 15 front view of;

[0035] Figure 17 Structural schematic diagram of the circuit breaker provided by the embodiment of the present invention.

[0036] Icons: 100 - circuit breaker; 10 - operating mechanism; 11 - housing; 111 - second guiding part; 12 - button; 121 - second unlocking part; 122 - first clamping part; 13 - locking part; 13A - rotating shaft; 131 - first fastening part; 132 - first unlocking part; 1321 - abutting end; 133 - mating end; 14 - contact seat; 141 - second fastening part; 142 - installation cavity; 143 - installation hole; 144 - first guiding part; 145 - second clamping part; 146 - triggering part; 15 - moving contact; 151 - contact body; 1511 - groove; 152 - contact part; 153 - connecting part; 16 - static contact; 171 - first elastic part; 172 - second elastic part; 173 - third elastic part; 174 - fourth elastic part; 18 - electromagnetic release; 181 - yoke frame; 182 - moving iron core; 183 - static iron core; 184 - current coil; 185 - voltage coil; 186 - ejector rod; 31 - circuit board; 32 - signal processor. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of the present invention.

[0039] It should be noted that: like reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0041] In addition, the terms "horizontal", "vertical", etc. do not mean that the components are required to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0042] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Please refer to Figures 1 to 17 , the embodiment of the present application provides an operating mechanism 10, including a housing 11 and a button 12 slidably connected to the housing 11. A locking member 13, a contact seat 14, a moving contact 15, and a static contact 16 are arranged in the housing 11. The locking member 13 is rotatably connected to the housing 11, the contact seat 14 is slidably connected to the housing 11, the moving contact 15 is installed on the contact seat 14, the static contact 16 is fixedly connected to the housing 11, the button 12 is slidably connected to the contact seat 14, and the button 12 drives the moving contact 15 to close or open with the static contact 16. When closing, the locking member 13 is latched with the contact seat 14, and when opening, the locking member 13 is unlatched from the contact seat 14. This operating mechanism 10 can solve the problem of the complex structure of the operating mechanism 10 in the prior art.

[0044] It should be noted that as Figures 1 to 4As shown in the figure, the operating mechanism 10 includes a housing 11, a button 12, a moving contact 15 and a static contact 16. A predetermined track is provided inside the housing 11. The button 12 is slidably connected to the housing 11. The moving contact 15 is drivingly connected to the button 12. The static contact 16 is fixedly connected to the housing 11. During the closing process, the operator can press the button 12 inward to make the button 12 slide along the predetermined track towards the inside of the housing 11, driving the moving contact 15 to move towards the side close to the static contact 16 until it contacts the static contact 16, so that the operating mechanism 10 completes the closing action, and thus the circuit breaker 100 is in the closed state; during the opening process, the operator can pull the button 12 outward to make the button 12 slide along the predetermined track towards the outside of the housing 11, driving the moving contact 15 to move towards the side away from the static contact 16 until it separates from the static contact 16, so that the operating mechanism 10 completes the opening action, and thus the circuit breaker 100 is in the open state.

[0045] As Figures 1 to 4 shown, the operating mechanism 10 further includes a locking member 13 and a contact seat 14. The button 12 is drivingly connected to the moving contact 15 through the locking member 13 and the contact seat 14. Among them, the locking member 13 is rotatably connected to the housing 11. The contact seat 14 is slidably connected to the housing 11. The button 12 is slidably connected to the contact seat 14. The moving contact 15 is installed on the contact seat 14. During the closing process, the button 12 pushes the contact seat 14 to slide along the predetermined track, driving the moving contact 15 to gradually approach the static contact 16. Until the contact seat 14 reaches the maximum closing position, the moving contact 15 reaches the closing position. At this time, by engaging the locking member 13 with the contact seat 14, the sliding of the contact seat 14 relative to the housing 11 can be locked, so as to lock the positions of the contact seat 14 and the moving contact 15 relative to the housing 11, so that the moving contact 15 is always in the closing position and maintains a stable and reliable contact with the static contact 16, thereby ensuring that the circuit breaker 100 is in a stable closed state; during the opening process, by unlocking the locking member 13 from the contact seat 14, the locking of the sliding of the contact seat 14 can be released, so that the contact seat 14 can slide from the maximum closing position to the preset opening position under the action of an external force, thereby driving the moving contact 15 to reach the opening position, and further enabling the operating mechanism 10 to complete the opening action, and thus the circuit breaker 100 is in the open state.

[0046] It should also be noted that, for the convenience of understanding the specific structure of the operating mechanism 10, Figure 1 and Figure 2 are schematic structural diagrams of removing part of the housing 11, Figure 3 and Figure 4The structural schematic diagram for removing the housing 11. By way of example, in this embodiment, the housing 11 includes a first sub-housing 11 and a second sub-housing 11 which are oppositely arranged. The first sub-housing 11 and the second sub-housing 11 are buckled with each other to form a receiving cavity for installing components such as a button 12, a locking member 13, a contact seat 14, a moving contact 15, and a static contact 16. Among them, the buckling direction of the first sub-housing 11 and the second sub-housing 11 is perpendicular to the sliding direction of the button 12 relative to the housing 11.

[0047] Compared with the operating mechanism 10 in the prior art, the operating mechanism 10 provided in the embodiment of the present application can complete the closing action and the opening action of the operating mechanism 10 by controlling the sliding direction of the button 12 relative to the housing 11, which simplifies the movement form of the operating mechanism 10; in addition, the operating mechanism 10 provided in the embodiment of the present application also locks the sliding of the contact seat 14 relative to the housing 11 through the locking member 13, ensuring that the circuit breaker 100 can be in a stable closing state, improving the stability and reliability of the circuit breaker 100; furthermore, the operating mechanism 10 provided in the embodiment of the present application reduces the components of the operating mechanism 10, simplifies the product structure of the operating mechanism 10, reduces the occupied space of the operating mechanism 10, and helps to meet the design requirement of miniaturization of the circuit breaker 100.

[0048] Optionally, as Figure 9 and Figure 10 shown, the locking member 13 is provided with a first buckling portion 131 and a first unlocking portion 132. As Figure 7 and Figure 8 shown, the contact seat 14 is provided with a second buckling portion 141. As Figure 6 shown, the button 12 is provided with a second unlocking portion 121. As Figures 11 to 13 shown, when closing, the second unlocking portion 121 abuts against the first unlocking portion 132, and the button 12 drives the contact seat 14 to slide relative to the housing 11 so that the first buckling portion 131 is buckled with the second buckling portion 141. When opening, the button 12 drives the second unlocking portion 121 to slide and abut against the first unlocking portion 132, and the locking member 13 rotates relative to the housing 11 so that the first buckling portion 131 is unlocked from the second buckling portion 141.

[0049] It should be noted that when closing, the locking part 13 is latched with the contact seat 14 to lock the sliding of the contact seat 14 relative to the housing 11 through the locking part 13, so that the positions of the contact seat 14 and the moving contact 15 relative to the housing 11 are fixed. For this purpose, a first latching part 131 is provided on the locking part 13, and a second latching part 141 is provided on the contact seat 14. When closing, the first latching part 131 is latched with the second latching part 141. Also, since the locking part 13 is rotatably connected to the housing 11, in order to ensure that the first latching part 131 and the second latching part 141 can be aligned when closing, a first unlocking part 132 is provided on the locking part 13, and a second unlocking part 121 is provided on the button 12. As Figure 11 shown, during the closing process, the second unlocking part 121 and the first unlocking part 132 are always in contact with each other to lock the rotation of the locking part 13 relative to the housing 11 through the button 12, so that the first latching part 131 and the second latching part 141 can be aligned and latched; as Figure 12 and Figure 13 shown, during the opening process, the button 12 slides towards the outside of the housing 11, driving the second unlocking part 121 and the first unlocking part 132 to slide and contact each other (that is, maintaining the contact relationship but the specific contact position continuously changes towards the side close to the button 12), which can release the locking of the rotation of the locking part 13. At this time, the locking part 13 can continuously rotate relative to the housing 11 until the second unlocking part 121 contacts the contact end 1321 of the first unlocking part 132 away from the rotation center of the locking part 13, and the first latching part 131 and the second latching part 141 can be separated to achieve unlocking.

[0050] Exemplarily, in this embodiment, the first latching part 131 is a hook-shaped protrusion, and the second latching part 141 is an arc-shaped protrusion. The hook-shaped protrusion can hook on the arc-shaped protrusion to latch the first latching part 131 and the second latching part 141. Of course, in other embodiments, the first latching part 131 and the second latching part 141 can also be other structures, and those skilled in the art should be able to make reasonable selections and designs according to the actual situation, and no specific limitations are made here.

[0051] Exemplarily, in this embodiment, the first unlocking portion 132 and the second unlocking portion 121 are bumps with mutually matching inclined surfaces, so that when the button 12 slides relative to the housing 11, the first unlocking portion 132 and the second unlocking portion 121 can slide relative to each other along the inclined surfaces of the bumps. When the first unlocking portion 132 and the second unlocking portion 121 approach each other, the first unlocking portion 132 and the second unlocking portion 121 can always abut against each other. When the first unlocking portion 132 and the second unlocking portion 121 move away from each other, the first unlocking portion 132 and the second unlocking portion 121 can slide and abut against each other. Of course, in other embodiments, the first unlocking portion 132 and the second unlocking portion 121 can also be other structures, and those skilled in the art should be able to make reasonable selections and designs according to the actual situation, and no specific limitations are made here.

[0052] In addition, the second unlocking portion 121 can be arranged at any position of the button 12 except the operating end exposed outside the housing 11. The position of the first unlocking portion 132 needs to correspond to the position of the second unlocking portion 121. Those skilled in the art should be able to make reasonable selections and designs according to the actual situation, and no specific limitations are made here.

[0053] Optionally, as Figures 1 to 4 shown, the operating mechanism 10 further includes a first elastic member 171. The first elastic member 171 is sleeved on the rotating shaft 13A where the locking member 13 is rotatably connected to the housing 11. Two ends of the first elastic member 171 respectively abut against the locking member 13 and the housing 11. The first elastic member 171 is used to provide a restoring force for the rotation of the locking member 13 relative to the housing 11. Among them, the first elastic member 171 can be a spring or a spring sheet.

[0054] It should be noted that during the opening process, the locking member 13 rotates counterclockwise relative to the housing 11 around the rotating shaft 13A, and the first unlocking portion 132 slides and abuts against the second unlocking portion 121. In order to enable the operating mechanism 10 to perform a closing action, the abutting position of the first unlocking portion 132 and the second unlocking portion 121 can be reset, so as to lock the rotation of the locking member 13 relative to the housing 11 through the button 12, so that the first engaging portion 131 and the second engaging portion 141 can be aligned to achieve engagement. In this embodiment, the operating mechanism 10 further includes a first elastic member 171. The first elastic member 171 is sleeved on the rotating shaft 13A where the locking member 13 is rotatably connected to the housing 11. Two ends of the first elastic member 171 respectively abut against the locking member 13 and the housing 11. When closing, the first elastic member 171 stores energy, and when opening, the first elastic member 171 releases energy, forcing the locking member 13 to rotate clockwise relative to the housing 11 around the rotating shaft 13A to reset. Thus, the first elastic member 171 can provide a restoring force for the rotation of the locking member 13 relative to the housing 11.

[0055] Optionally, in another embodiment, as Figure 15 and Figure 16As shown, the operating mechanism 10 further includes a second elastic member 172 connected to the button 12. The other end of the second elastic member 172 abuts against the contact seat 14 for energy storage, or the other end of the second elastic member 172 abuts against the locking member 13 to release energy and force the locking member 13 to be unlocked from the contact seat 14. Among them, the second elastic member 172 can be a spring or a spring sheet.

[0056] It should be noted that during the opening process, the button 12 drives one end of the second elastic member 172 to slide along a preset dead zone. During this process, the other end of the second elastic member 172 first abuts against the contact seat 14 for energy storage. As the button 12 continues to slide, the other end of the second elastic member 172 switches to abut against the locking member 13. At this time, the second elastic member 172 releases energy, forcing the locking member 13 to rotate and open relative to the housing 11, and the sliding of the contact seat 14 can be unlocked. Thus, the contact seat 14 can slide from the maximum closing position to the preset opening position under the action of an external force. During this process, the other end of the second elastic member 172 switches to abut against the contact seat 14 again until the contact seat 14 reaches the preset opening position.

[0057] Optionally, as Figure 2 and Figure 3 shown, the operating mechanism 10 further includes a third elastic member 173. Both ends of the third elastic member 173 abut against the contact seat 14 and the housing 11 respectively. The third elastic member 173 is used to provide a restoring force for the sliding of the contact seat 14 relative to the housing 11.

[0058] It should be noted that during the closing process, the button 12 pushes the contact seat 14 to slide relative to the housing 11, and the third elastic member 173 continuously stores elastic potential energy. During the opening process, when the locking member 13 releases the locking of the sliding of the contact seat 14, the third elastic member 173 releases energy, forcing the contact seat 14 to slide relative to the housing 11. Thus, the contact seat 14 can slide from the maximum closing position to the preset opening position under the action of the third elastic member 173. Among them, the third elastic member 173 can be a spring or a spring

[0059] Optionally, as Figure 14As shown in the figure, the moving contact 15 includes a contact body 151 and a contact portion 152 connected to the contact body 151. An installation cavity 142 is provided in the contact seat 14. The contact body 151 is slidably received in the installation cavity 142 and the contact portion 152 is exposed. The contact portion 152 is used to contact or separate from the static contact 16. A groove 1511 is provided on the contact body 151, and an installation hole 143 penetrating through to the installation cavity 142 is provided on the side wall of the contact seat 14. A fastener passes through the installation hole 143 and extends into the groove 1511 to define the sliding stroke of the moving contact 15 relative to the contact seat 14, so as to prevent the moving contact 15 from disengaging from the installation cavity 142. Among them, the fastener can be a rivet, and the groove 1511 can be a waist-shaped groove, so that the shapes of the opposite ends of the waist-shaped groove match the shape of the fastener.

[0060] Furthermore, as Figure 14 shown in the figure, the moving contact 15 further includes a connecting portion 153 connected to one end of the contact body 151 away from the contact portion 152. The operating mechanism 10 further includes a fourth elastic member 174. The fourth elastic member 174 is received in the installation cavity 142. The two ends of the fourth elastic member 174 respectively abut against the connecting portion 153 and the inner wall of the installation cavity 142 away from the contact portion 152. The fourth elastic member 174 is used to provide a pressing force for the moving contact 15 to move towards the side close to the static contact 16. Among them, the fourth elastic member 174 can be a spring or a spring sheet.

[0061] As Figures 1 to 4 shown in the figure, in order to further improve the contact stability between the moving contact 15 and the static contact 16 when the operating mechanism 10 is closed, the operating mechanism 10 further includes a fourth elastic member 174. The fourth elastic member 174 is received in the installation cavity 142. The two ends of the fourth elastic member 174 respectively abut against the connecting portion 153 and the inner wall of the installation cavity 142 away from the contact portion 152, so that the moving contact 15 has a tendency to move towards the side close to the static contact 16. When the moving contact 15 contacts the static contact 16, the fourth elastic member 174 can provide a pressing force to improve the contact stability between the moving contact 15 and the static contact 16.

[0062] Optionally, as Figure 5 、 Figure 7 and Figure 8 shown in the figure, a first guiding portion 144 is provided on the contact seat 14, and a second guiding portion 111 is provided on the housing 11. The first guiding portion 144 is slidably connected to the second guiding portion 111, so that the contact seat 14 is slidably connected to the housing 11. Exemplarily, in this embodiment, the first guiding portion 144 is a convex rib and the second guiding portion 111 is a sliding groove; of course, in other embodiments, the first guiding portion 144 can also be a sliding groove and the second guiding portion 111 can be a convex rib.

[0063] Optionally, as Figures 6 to 8As shown, a first engaging portion 122 is provided on the button 12, and a second engaging portion 145 is provided on the contact seat 14. The first engaging portion 122 is engaged with the second engaging portion 145 so that the button 12 is engaged with the contact seat 14. By way of example, in the present embodiment, the first engaging portion 122 is a buckle and the second engaging portion 145 is a slot; of course, in other embodiments, the first engaging portion 122 may be a slot and the second engaging portion 145 may be a buckle.

[0064] It should be noted that the button 12 is slidably connected to the contact seat 14. As Figure 1 shown, during the closing process, the first engaging portion 122 slides relative to the second engaging portion 145 to the side close to the static contact 16. At this time, the button 12 abuts against the contact seat 14, whereby the button 12 can push the contact seat 14 to move toward the side close to the static contact 16; as Figure 2 shown, during the opening process, the first engaging portion 122 slides relative to the second engaging portion 145 to the side away from the static contact 16. At this time, the button 12 abuts against the contact seat 14, whereby the button 12 can push the contact seat 14 to move toward the side away from the static contact 16. By way of example, in the present embodiment, the buckle is slidably sleeved in the slot. During closing, the buckle slides to the rightmost end in the illustrated orientation of the slot, and during opening, the buckle slides to the leftmost end in the illustrated orientation of the slot.

[0065] As for the specific value of the preset free travel of the button 12 relative to the contact seat 14, those skilled in the art should be able to make a reasonable selection and design according to the actual situation, as long as before the button 12 abuts against the contact seat 14 during the opening process, the second unlocking portion 121 and the first unlocking portion 132 slide and abut until the button 12 pushes the locking member 13 open (as Figure 12 shown). After the locking member 13 is pushed open, the third elastic member 173 releases energy and pushes the contact seat 14 and the button 13 to move toward the side away from the static contact 16 until the locking member 13 can rotate relative to the housing 11 until the second unlocking portion 121 abuts against the abutting end 1321 of the first unlocking portion 132 away from the rotation center of the locking member 13 (as Figure 13 shown).

[0066] Optionally, as Figures 1 to 4 shown, a mating end 133 is provided on the locking member 13, and an electromagnetic release 18 is further provided in the housing 11. The acting end of the electromagnetic release 18 faces the mating end 133. The electromagnetic release 18 is used to push the locking member 13 to rotate relative to the housing 11 according to the opening signal so that the locking member 13 is disengaged from the contact seat 14. Thus, the operating mechanism 10 can be manually opened through the button 12 and can also be electrically opened through the electromagnetic release 18, thereby ensuring the reliability of the circuit breaker 100.

[0067] Specifically, as Figure 4As shown in the figure, the electromagnetic release 18 includes a yoke frame 181. Inside the yoke frame 181, there are successively arranged a moving iron core 182, a core spring, and a static iron core 183. A coil is wound around the outer periphery of the static iron core 183. The static iron core 183 is fixedly connected to the yoke frame 181. At the center of the moving iron core 182, a push rod 186 is fixedly arranged. The push rod 186 passes through the core spring, the static iron core 183, and the yoke frame 181 in sequence and then exposes the acting end. Among them, the coil can include a current coil 184 and a voltage coil 185. The voltage coil 185 is controlled by solid-state electronics and plays a role in the agreed tripping protection circuit. When the solid-state protection fails abnormally, the current coil 184 can generate a large tripping force to make the tripping mechanism act and disconnect the circuit. Another function of the current coil 184 is to limit the rapid rise of the current in the circuit depending on its own characteristics and play a role in protecting the solid-state electronic switch.

[0068] As Figure 17 shown, the embodiment of the present application further provides a circuit breaker 100, which includes the above-mentioned operating mechanism 10 and a solid-state switch device arranged in the housing 11 of the operating mechanism 10. The solid-state switch device includes a circuit board 31 connected in series with the operating mechanism 10. A signal collector and a signal processor 32 are arranged on the circuit board 31. The signal collector collects the opening signal and sends it to the signal processor 32. The signal processor 32 controls the operating mechanism 10 to trip through the circuit board 31. Among them, the signal collector can be a microswitch. Correspondingly, a triggering part 146 is arranged on the contact seat 14. When the triggering part 146 contacts the microswitch, the signal collector collects that the mechanical closing is successful, and thus the protection function of the solid-state electronic switch can be started.

[0069] Since the structure and beneficial effects of the operating mechanism 10 have been described in detail in the foregoing embodiments, they will not be elaborated herein. In addition, since the circuit breaker 100 in the embodiment of the present application further includes a signal collector, a signal processor 32, a circuit board 31, etc., the protection characteristics of the solid-state electronic switch are realized, thereby realizing the signal control of the circuit breaker 100, achieving the purpose of no arc erosion of the contacts of the circuit breaker 100 when there is a fault current, improving the arc extinguishing performance of the circuit breaker 100, and prolonging the service life of the circuit breaker 100.

[0070] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0071] In addition, it should be noted that, in the above specific embodiments, the various specific technical features described can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination manners.

Claims

1. An operating mechanism, characterized in that, It includes a housing (11) and a button (12) slidably connected to the housing (11). A locking member (13), a contact seat (14), a moving contact (15) and a static contact (16) are arranged in the housing (11). The locking member (13) is rotatably connected to the housing (11), the contact seat (14) is slidably connected to the housing (11), the moving contact (15) is installed on the contact seat (14), the static contact (16) is fixedly connected to the housing (11), the button (12) is slidably connected to the contact seat (14), and the button (12) drives the moving contact (15) to close or open with the static contact (16). When closing, the locking member (13) is latched with the contact seat (14), and when opening, the locking member (13) is unlatched from the contact seat (14).

2. The operating mechanism according to claim 1, characterized in that, A first latching portion (131) and a first unlocking portion (132) are arranged on the locking member (13), a second latching portion (141) is arranged on the contact seat (14), and a second unlocking portion (121) is arranged on the button (12). When closing, the second unlocking portion (121) abuts against the first unlocking portion (132), and the button (12) drives the contact seat (14) to slide relative to the housing (11) so that the first latching portion (131) is latched with the second latching portion (141). When opening, the button (12) drives the second unlocking portion (121) to slide and abut against the first unlocking portion (132), and the locking member (13) rotates relative to the housing (11) so that the first latching portion (131) is unlatched from the second latching portion (141).

3. The operating mechanism according to claim 1, characterized in that, The operating mechanism (10) further includes a first elastic member (171). The first elastic member (171) is sleeved on a rotating shaft (13A) where the locking member (13) is rotatably connected to the housing (11). Two ends of the first elastic member (171) respectively abut against the locking member (13) and the housing (11), and the first elastic member (171) is used to provide a restoring force for the rotation of the locking member (13) relative to the housing (11).

4. The operating mechanism according to claim 1, characterized in that, The operating mechanism (10) further includes a second elastic member (172) connected to the button (12). The other end of the second elastic member (172) abuts against the contact seat (14) for energy storage, or the other end of the second elastic member (172) abuts against the locking member (13) to release energy and force the locking member (13) to be unlatched from the contact seat (14).

5. The operating mechanism according to claim 1, characterized in that, The operating mechanism (10) further includes a third elastic member (173). Two ends of the third elastic member (173) respectively abut against the contact seat (14) and the housing (11), and the third elastic member (173) is used to provide a restoring force for the sliding of the contact seat (14) relative to the housing (11).

6. The operating mechanism according to claim 1, characterized in that, The moving contact (15) includes a contact body (151) and a contact portion (152) connected to the contact body (151). An installation cavity (142) is provided in the contact seat (14). The contact body (151) is slidably received in the installation cavity (142) and exposes the contact portion (152). The contact portion (152) is used to contact or separate from the static contact (16). A groove (1511) is provided on the contact body (151). An installation hole (143) penetrating through to the installation cavity (142) is provided on the side wall of the contact seat (14). A fastener passes through the installation hole (143) and extends into the groove (1511) to define the sliding stroke of the moving contact (15) relative to the contact seat (14).

7. The operating mechanism according to claim 6, characterized in that, The moving contact (15) further includes a connecting portion (153) connected to an end of the contact body (151) away from the contact portion (152). The operating mechanism (10) further includes a fourth elastic member (174). The fourth elastic member (174) is received in the installation cavity (142). Two ends of the fourth elastic member (174) respectively abut against the connecting portion (153) and the inner wall of the installation cavity (142) away from the contact portion (152). The fourth elastic member (174) is used to provide a pressing force for the moving contact (15) to move towards the side close to the static contact (16).

8. The operating mechanism according to claim 1, characterized in that, A first guiding portion (144) is provided on the contact seat (14). A second guiding portion (111) is provided on the housing (11). The first guiding portion (144) is slidably connected to the second guiding portion (111) so that the contact seat (14) is slidably connected to the housing (11). A first engaging portion (122) is provided on the button (12). A second engaging portion (145) is provided on the contact seat (14). The first engaging portion (122) is engaged with the second engaging portion (145) so that the button (12) is engaged with the contact seat (14).

9. The operating mechanism according to claim 1, characterized in that A mating end (133) is provided on the locking member (13). An electromagnetic release (18) is further provided in the housing (11). The acting end of the electromagnetic release (18) faces the mating end (133). The electromagnetic release (18) is used to push the locking member (13) to rotate relative to the housing (11) according to a tripping signal so that the locking member (13) is disengaged from the contact seat (14).

10. A circuit breaker, characterized in that, It includes the operating mechanism (10) as claimed in claim 9, and a solid-state switch device provided in the housing (11) of the operating mechanism (10). The solid-state switch device includes a circuit board (31) connected in series with the operating mechanism (10). A signal collector and a signal processor (32) are provided on the circuit board (31). The signal collector collects a tripping signal and sends it to the signal processor (32). The signal processor (32) controls the operating mechanism (10) to trip through the circuit board (31).

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