An operating mechanism and circuit breaker

Abstract

The application provides an operating mechanism and a circuit breaker, and belongs to the technical field of low-voltage electrical appliances. The operating mechanism comprises a support, a lock catch and a trip catch which are arranged in a shell. The support is rotationally connected in the shell, and the support is also rotationally connected with a movable contact in the shell. The movable contact is used for cooperating with a static contact in the shell. The lock catch and the trip catch are rotationally arranged on one side of the support, and the movable contact is rotationally arranged on the other side of the support. The movable contact, the support, the lock catch and the trip catch are arranged in steps along the thickness direction of the shell. A handle is further arranged on the shell. The handle is connected with the trip catch, and the trip catch is buckled with the lock catch. The movable contact is driven to move to contact or separate from the static contact through the handle. The arrangement space of the operating mechanism and the movable contact is adjusted, and the arrangement positions of other cooperating components in the shell are correspondingly adjusted. Therefore, the circuit breaker does not need any auxiliary tools when being installed, the assembly process is simplified, the productivity and the product qualification rate are improved, and the size of the shell is reduced, so that the size of the entire circuit breaker is reduced.

Description

Technical Field

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

[0002] The circuit breaker can close, carry and interrupt the current under normal circuit conditions, and can close, carry and interrupt the current under abnormal circuit conditions within a specified time. It has short circuit, overload or leakage protection functions.

[0003] Existing circuit breakers have screw terminals at both ends, and the handle protrudes from the circuit breaker body, so that the handle occupies additional space outside the circuit breaker body. The circuit breaker has many parts, and after the parts are connected, the structure is complex and assembly is difficult, which is not conducive to automated production and has low production efficiency. In addition, the overall size of the circuit breaker is large, resulting in a large overall volume and space occupied by the circuit breaker. Summary of the Invention

[0004] The purpose of this application is to provide an operating mechanism and a circuit breaker, which simplify the assembly process by rationally arranging the components of the operating mechanism, do not require auxiliary tools during installation, improve production efficiency and product qualification rate, and can reduce the volume and space occupied by the circuit breaker.

[0005] The embodiment of the present application is implemented as follows:

[0006] One aspect of an embodiment of the present application provides an operating mechanism, which includes a bracket, a locking piece and a jumping piece arranged in a shell, the bracket being rotatably connected in the shell, and the bracket also being rotatably connected to a moving contact in the shell, and the moving contact being used to cooperate with a static contact in the shell; the locking piece and the jumping piece are rotatably arranged on one side of the bracket, and the moving contact is rotatably arranged on the other side of the bracket, the moving contact, the bracket, the locking piece and the jumping piece are stepped along the thickness direction of the shell, and a handle is further provided on the shell, the handle is connected to the jumping piece, the jumping piece and the locking piece are engaged, and the moving contact is driven by the handle to move and contact or separate with the static contact.

[0007] In the thickness direction of the shell, the moving contact is located at the bottom of the bracket, the bracket is stacked on the front end of the moving contact, and the locking piece and the jumping piece are stacked on the front end of the bracket. When stacked, the moving contact, the bracket, the locking piece and the jumping piece are staggered to form a stepped structure, and the arrangement positions of other components connected to the operating mechanism and the moving contact are adjusted accordingly, which simplifies the assembly process and does not require auxiliary tools during installation, thereby improving production efficiency and product qualification rate, and reducing the volume of the overall circuit breaker.

[0008] Optionally, the bracket and the locking member are coaxially connected via a rotating shaft, a first spring is sleeved on the rotating shaft, one end of the first spring abuts against the bracket and the other end abuts against the locking member, and the locking member is reset by the first spring.

[0009] The first spring brings the locking member close to the jumping member so that the jumping member is engaged with the locking member. When the locking member rotates, the first spring accumulates energy, which can drive the locking member to reverse and reset the locking member.

[0010] Optionally, the bracket is rotatably connected to the housing via the rotating shaft, and a second spring is sleeved on the rotating shaft, with two ends of the second spring respectively abutting against the bosses of the bracket and the housing, and the bracket is reset by the second spring; the moving contact is rotatably connected to the bracket via the mounting shaft, and a third spring is sleeved on the mounting shaft, with two ends of the third spring respectively abutting against the moving contact and the bracket, and the moving contact is reset by the third spring.

[0011] The second spring provides a reset force for the bracket to move the bracket toward the disconnected position of the movable contact. The third spring provides a reset force for the movable contact to abut against the bracket.

[0012] Optionally, one end of the second spring abutting against the bracket is connected to one end of the third spring abutting against the bracket. The second spring and the third spring are integrally provided.

[0013] Optionally, a rotating member is further provided in the shell, the handle is connected to the jumper via the rotating member, the rotating member and the jumper are connected via a first connecting rod; the rotating member and the handle are connected via a gear or a second connecting rod.

[0014] Optionally, when the operating mechanism is in a closed state, the handle is flush with a panel of the housing.

[0015] When the handle and rotating member are connected via a gear, the upper surface of the handle can be flush with the circuit breaker panel when the circuit breaker is closed, making the circuit breaker's appearance more neat and aesthetically pleasing. When the handle and rotating member are connected via a second connecting rod, the handle can be a sliding button that actuates the circuit breaker to close or open by sliding the handle; the sliding direction of the handle is perpendicular to the circuit breaker panel.

[0016] Another aspect of an embodiment of the present application provides a circuit breaker, which includes a shell and an operating mechanism as described above arranged in the shell. An electromagnetic release and an overload release are also provided in the shell. The electromagnetic release and the overload release are respectively located at both ends of a locking member of the operating mechanism. When a short-circuit current flows through the electromagnetic release, the electromagnetic release drives the locking member to rotate so that the locking member and the tripping member are disengaged; when an overload current flows through the overload release, the overload release drives the locking member to rotate so that the locking member and the tripping member are disengaged.

[0017] The electromagnetic circuit breaker can trip the circuit breaker when the circuit breaker is short-circuited, and the overload release can trip the circuit breaker when the circuit breaker is overloaded, both of which play a role in protecting the circuit breaker.

[0018] Optionally, a supporting surface is provided on the side of the locking piece facing the electromagnetic release, and the electromagnetic release drives the locking piece to rotate through the supporting surface; a supporting platform is provided on one end of the locking piece facing the overload release, and the overload release drives the locking piece to rotate through the supporting platform.

[0019] Optionally, an electrical isolation surface is provided on the side of the locking member facing the electromagnetic release, the static contact is electrically connected to the electromagnetic release, and in the thickness direction of the shell, the width of the electrical isolation surface is greater than the width of the moving contact and the width of the static contact.

[0020] When the width of the electrical isolation surface is large, the moving contact and the static contact can be completely isolated, thereby preventing electric sparks from being generated when the moving contact and the static contact come into contact or separate.

[0021] Optionally, an angle is provided between the electromagnetic release and the horizontal plane. The tilted arrangement of the electromagnetic release can reduce the size of the circuit breaker.

[0022] The beneficial effects of the embodiments of the present application include:

[0023] The operating mechanism and circuit breaker provided in the embodiment of the present application include a bracket, a tripping fastener, a locking fastener and a handle arranged in a shell. The bracket is rotatably connected in the shell, and the bracket is also rotatably connected to the moving contact in the shell. The moving contact is used to cooperate with the static contact in the shell to form a contact system of the circuit breaker. The handle can be manipulated through the handle hole of the shell. The handle is connected to the tripping fastener, and the tripping fastener cooperates with the locking fastener. The handle can drive the moving contact to move and contact or separate with the static contact; the moving contact, bracket, locking fastener and tripping fastener are arranged in steps along the thickness direction of the shell. The locking fastener is arranged in steps along the thickness direction of the shell. The locking member and the jumper are rotatably arranged above one side of the bracket, and the moving contact is rotatably arranged below the other side of the bracket, so that the moving contact, the bracket, the locking member and the jumper form a stepped structure. In this way, the layout space of the operating mechanism and the moving contact is changed, and the layout positions of other matching components in the shell are adjusted accordingly, so that no auxiliary tools are required during installation, the assembly process is simplified, and the productivity and product qualification rate are improved; at the same time, the size of the shell is reduced, thereby reducing the size of the entire circuit breaker, reducing the volume and space occupied by the circuit breaker.

[0024] Furthermore, the circuit breaker includes a housing and an operating mechanism such as that described in the above embodiment, disposed within the housing. The housing also includes an electromagnetic release and an overload release, which are located at opposite ends of the operating mechanism's latch. The electromagnetic release is configured to drive the latch to rotate in the event of a short circuit, thereby disengaging the latch from the tripping member. The overload release is configured to drive the latch to rotate in the event of an overload, thereby disengaging the latch from the tripping member. The stepped arrangement of the operating mechanism and moving contacts, the tilted arrangement of the electromagnetic release, and the positioning of other components simplify the assembly process, improving productivity and product qualification rates. Furthermore, the size of the entire circuit breaker is reduced, enabling the formation of a square-shaped circuit breaker, resulting in an aesthetically pleasing overall appearance and a small footprint, making it suitable for use in small spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is one of the schematic diagrams of the operating mechanism structure provided in the embodiment of the present application;

[0027] Figure 2 The second schematic diagram of the operating mechanism structure provided in the embodiment of the present application;

[0028] Figure 3 A schematic diagram of a partially enlarged structure of the operating mechanism provided in an embodiment of the present application;

[0029] Figure 4 The third schematic diagram of the operating mechanism structure provided in the embodiment of the present application;

[0030] Figure 5 This is a fourth schematic diagram of the operating mechanism structure provided in an embodiment of the present application;

[0031] Figure 6 This is a schematic diagram of the external structure of the circuit breaker provided in an embodiment of the present application.

[0032] Icons: 10-housing; 11-operating mechanism; 100-circuit breaker; 101-panel; 110-handle; 111-rotating member; 112-second spring; 113-first connecting rod; 113'-second connecting rod; 114-locking member; 1141-supporting surface; 1142-electrical isolation surface; 1143-supporting platform; 115-jumping member; 1150-clamping surface; 116-first spring; 117-bracket; 118-gear; 119-third spring; 12-electromagnetic release; 13-overload release; 14-plug-in terminal; 15-moving contact; 16-static contact; 17-arc extinguishing chamber; D-width; F-thickness direction. DETAILED DESCRIPTION

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0036] The handle of the existing circuit breaker has a large movable space when operated, and the handle protrudes from the circuit breaker body, so that the handle occupies extra space outside the circuit breaker body, causing assembly inconvenience and increasing the overall volume and space occupied by the circuit breaker.

[0037] To solve the above problems, the embodiment of the present application provides an operating mechanism 11 and a circuit breaker 100. By changing the arrangement of the bracket 117, the locking member 114, the tripping member 115 and other components, the size of the circuit breaker 100 can be reduced to form a square circuit breaker 100. The handle 110 is flush with the panel 101 of the housing 10, which can effectively simplify the assembly process. The circuit breaker 100 does not require any auxiliary tools during installation, thereby improving productivity and product qualification rate while reducing the volume and space occupied by the circuit breaker 100.

[0038] Please refer to Figure 1 The embodiment of the present application provides an operating mechanism 11, including a bracket 117, a locking piece 114 and a jumping piece 115 arranged in the shell 10, the bracket 117 is rotatably connected in the shell 10, and the bracket 117 is also rotatably connected to the moving contact 15 in the shell 10, and the moving contact 15 is used to cooperate with the static contact 16 in the shell 10; the locking piece 114 and the jumping piece 115 are rotatably arranged on one side of the bracket 117, and the moving contact 15 is rotatably arranged on the other side of the bracket 117. The moving contact 15, the bracket 117, the locking piece 114 and the jumping piece 115 are stepped along the thickness direction F of the shell 10. A handle 110 is also provided on the shell 10. The handle 110 is connected to the jumping piece 115, and the jumping piece 115 is buckled with the locking piece 114. The handle 110 drives the moving contact 15 to move and contact or separate with the static contact 16.

[0039] The bracket 117 is rotatably installed in the housing 10. The bracket 117, the tripper 115, the lock 114 and the handle 110 belong to the operating mechanism 11. One side of the bracket 117 is provided with a lock 114 and a tripper 115 that cooperate with each other, and the other side is provided with a moving contact 15 rotatably connected to the bracket 117. The lock 114 is coaxially installed with the bracket 117, and the tripper 115 cooperates with the lock 114. The tripper 115 is also connected to the handle 110, and the handle 110 can be controlled through the handle hole on the housing 10.

[0040] A moving contact 15 and a static contact 16 are also provided in the housing 10. The moving contact 15 and the static contact 16 do not belong to the operating mechanism 11. The moving contact 15 is rotatably connected to the other side of the bracket 117. The moving contact 15 and the static contact 16 cooperate to form a contact system of the circuit breaker 100. The connection and disconnection of the electric energy of the circuit breaker 100 are mainly achieved by the contact and separation of the moving contact 15 and the static contact 16 to realize the closing and opening of the circuit breaker 100. When the tripping catch 115 and the locking catch 114 are buckled, the bracket 117 drives the moving contact 15 and the static contact 16 to contact, and the electric energy in the circuit breaker 100 is connected, realizing Figure 1 and Figure 2 The circuit breaker 100 is shown as closed; when the tripping member 115 and the locking member 114 are disengaged, the movable contact 15 and the static contact 16 are separated by the bracket 117, and the power in the circuit breaker 100 is disconnected, realizing Figure 4 The circuit breaker 100 is shown open.

[0041] Depend on Figure 1 It can be seen that in the thickness direction F of the housing 10, the moving contact 15 is located on the bottom surface of the bracket 117 and is rotatably connected to the bracket 117. The locking member 114 and the jumper 115 are located on the top surface of the bracket 117. The projections of the moving contact 15 and the bracket 117 in the thickness direction F of the housing 10 partially overlap. The projections of the bracket 117, the locking member 114 and the jumper 115 in the thickness direction F of the housing 10 partially overlap. The moving contact 15 is located at the bottom, and the bracket 117 is stacked on the front end of the moving contact 15. The locking member 114 and the jumping member 115 are stacked on the front end of the bracket 117. When stacked, the moving contact 15, the bracket 117, the locking member 114 and the jumping member 115 are staggered to form a stepped structure, and the arrangement positions of other components connected to the operating mechanism 11 and the moving contact 15 are adjusted accordingly, which can simplify the assembly process. No auxiliary tools are required when installing the circuit breaker 100, and the size of the housing 10 is reduced, thereby reducing the size of the overall circuit breaker 100.

[0042] For example, an electromagnetic release 12 is further provided in the housing 10, and a static contact 16 is arranged at the front end of the electromagnetic release 12. In order to cooperate with the static contact 16 and the moving contact 15, an angle is provided between the electromagnetic release 12 and the horizontal plane, and the electromagnetic release 12 is arranged at an angle. Compared with the horizontal placement of the electromagnetic release 12 in the prior art, the electromagnetic release 12 of the present application is arranged at an angle, which can reduce the size of the circuit breaker 100.

[0043] In addition, the handle 110 is connected to the tripping member 115 and is arranged in accordance with the position of the tripping member 115. Compared with the existing circuit breaker handle protruding from the circuit breaker body, the handle 110 of the present application can be flush with the panel 101 of the shell 10, which reduces the volume of the circuit breaker 100 while making the appearance of the circuit breaker 100 neater and more beautiful.

[0044] The operating mechanism 11 provided in the embodiment of the present application includes a bracket 117, a tripping catch 115, a locking catch 114 and a handle 110 arranged in the housing 10. The bracket 117 is rotatably connected to the housing 10. The bracket 117 is also rotatably connected to the moving contact 15 in the housing 10. The moving contact 15 is used to cooperate with the static contact 16 in the housing 10 to form a contact system of the circuit breaker 100. The handle 110 can be manipulated through the handle hole of the housing 10. The handle 110 is connected to the tripping catch 115, and the tripping catch 115 cooperates with the locking catch 114. The handle 110 can drive the moving contact 15 to move in contact with or separate from the static contact 16; the moving contact 15, the bracket 117, the locking catch 114 and the tripping catch 115 The shell 10 is arranged in a stepped manner along the thickness direction F, and the locking member 114 and the jumping member 115 are rotatably arranged above one side of the bracket 117, and the moving contact 15 is rotatably arranged below the other side of the bracket 117, so that the moving contact 15, the bracket 117, the locking member 114 and the jumping member 115 form a stepped structure. In this way, the layout positions of other matching components in the shell 10 are adjusted accordingly, which can simplify the assembly process and make the circuit breaker 100 install without the aid of any auxiliary tools, thereby improving productivity and product qualification rate; on the other hand, it also reduces the size of the shell 10, thereby reducing the size of the entire circuit breaker 100, and reducing the volume and space occupied by the circuit breaker 100.

[0045] Furthermore, the bracket 117 and the locking member 114 are coaxially connected via a rotating shaft, and a first spring 116 is sleeved on the rotating shaft. One end of the first spring 116 abuts against the bracket 117, and the other end abuts against the locking member 114. The locking member 114 is reset by the first spring 116.

[0046] A rotating shaft is provided on the bracket 117, and the bracket 117 is coaxially connected to the locking member 114 via the rotating shaft, so that the locking member 114 can rotate relative to the bracket 117 along the rotating shaft. When the locking member 114 rotates, it can engage or disengage with the tripping member 115; in one embodiment of its application, one end of the locking member 114 is placed in front of the electromagnetic release 12. When a short-circuit current passes through the circuit breaker 100, the electromagnetic release 12 is activated, which can drive the locking member 114 to rotate, so that the locking member 114 is disengaged from the tripping member 115, and the circuit breaker 100 is opened, thereby protecting the circuit breaker 100 in the event of a short circuit.

[0047] Among them, the first spring 116 is sleeved on the rotating shaft, and the first spring 116 is located between the bracket 117 and the lock member 114, and the two ends of the first spring 116 are respectively against the bracket 117 and the lock member 114, and the first spring 116 is used to make the lock member 114 close to the jumper 115, so that the jumper 115 is engaged with the lock member 114. When the lock member 114 rotates, the first spring 116 accumulates energy, and the energy can drive the lock member 114 to reverse so that the lock member 114 is reset.

[0048] The tripping member 115 is also rotatably mounted on the bracket 117 and can rotate relative to the bracket 117. The tripping member 115 is connected to the handle 110. Driving the handle 110 can drive the tripping member 115, the locking member 114, the bracket 117 and the moving contact 15 to rotate together; after the tripping member 115 and the locking member 114 are disengaged, they are automatically reset by the first spring 116.

[0049] Further, if Figure 2 As shown, the bracket 117 is rotatably connected to the housing 10, and a boss is provided in the housing 10. The bracket 117 is also rotatably connected to the housing 10 through a rotating shaft. Therefore, a second spring 112 is also sleeved on the rotating shaft. The second spring 112 is located between the bracket 117 and the housing 10. The two ends of the second spring 112 are respectively abutted against the bracket 117 and the boss of the housing 10. After the bracket 117 rotates relative to the housing 10, the second spring 112 is used to reset the bracket 117. The second spring 112 provides a reset force for the bracket 117, so that the bracket 117 moves toward the disconnected position of the moving contact 15.

[0050] The moving contact 15 is rotatably connected to the bracket 117 via a mounting shaft. A third spring 119 is sleeved on the mounting shaft. Two ends of the third spring 119 respectively abut against the moving contact 15 and the bracket 117. The third spring 119 resets the moving contact 15.

[0051] The static contact 16 is mounted on the electromagnetic release 12. The actuating handle 110 moves the moving contact 15 toward or away from the static contact 16, thereby closing or opening the circuit breaker 100. When the moving contact 15 rotates, the third spring 119 accumulates energy, which drives the moving contact 15 in reverse, resetting it. The third spring 119 provides a reset force for the moving contact 15, forcing it to abut against the bracket 117. Rotation of the moving contact 15 relative to the bracket 117 via the mounting shaft provides overtravel, maintaining reliable contact pressure between the moving contact 15 and the static contact 16. During closing, the third spring 119 provides contact pressure between the moving contact 15 and the static contact 16. During opening, the third spring 119 forces the moving contact 15 to abut against the bracket 117.

[0052] The second spring 112 and the third spring 119 can be set independently respectively. Alternatively, the second spring 112 and the third spring 119 can be set as an integral part, and one end of the second spring 112 that abuts against the bracket 117 and the end of the third spring 119 that abuts against the bracket 117 are connected to each other, so that the second spring 112 and the third spring 119 form an integral structure.

[0053] In addition, when the operating mechanism 11 is driven by the handle 110, there are several ways to connect the handle 110 and the jumper 115; in one embodiment of the present application, the handle 110 is connected to the jumper 115 through the rotating member 111, the rotating member 111 and the jumper 115 are connected through the first connecting rod 113, and the rotating member 111 and the handle 110 are connected through the gear 118.

[0054] Specifically, a rotating member 111 is provided in the housing 10, a gear 118 is provided on the rotating member 111, and the handle 110 has a tooth portion, and the tooth portion of the handle 110 and the gear 118 are engaged to connect the handle 110 and the rotating member 111 to each other; a hole is provided on the rotating member 111, and a hole is also provided on the jump catch 115, and the two ends of the first connecting rod 113 are respectively provided on the rotating member 111 and the jump catch 115 through the two holes, so that the rotating member 111 and the jump catch 115 are connected to each other. It is connected through the first connecting rod 113; when the handle 110 is operated, the handle 110 drives the rotating member 111 to rotate through the gear 118, the rotating member 111 drives the first connecting rod 113 to move, the first connecting rod 113 drives the jumping member 115 to rotate, the jumping member 115 is engaged with the locking member 114, and when the jumping member 115 moves, it also drives the bracket 117 and the locking member 114 to move, and the moving contact 15 installed on the bracket 117 contacts or separates with the static contact 16 as the bracket 117 moves.

[0055] When the handle 110 is connected to the rotating member 111 through the gear 118 , when the circuit breaker 100 is closed, the upper surface of the handle 110 can be flush with the panel 101 of the circuit breaker 100 , so that the appearance of the circuit breaker 100 is more neat and beautiful.

[0056] like Figure 5 As shown, in another embodiment of the present application, the handle 110 is connected via a rotating member 111 and a jumper 115 , which are connected via a first connecting rod 113 ; the rotating member 111 and the handle 110 are connected via a second connecting rod 113 ′.

[0057] The housing 10 is provided with a rotating member 111, the handle 110 is provided with a hole, the rotating member 111 is provided with two holes, the two ends of the second connecting rod 113' are respectively provided in one hole of the rotating member 111 and the hole of the handle 110, and the handle 110 and the rotating member 111 are connected by the second connecting rod 113'; the two ends of the first connecting rod 113 are respectively provided in the other hole of the rotating member 111 and the jumper 115, and the rotating member 111 is connected by the first connecting rod 113 is connected to the jumper 115; when the handle 110 is operated, the handle 110 drives the rotating member 111 to rotate through the second connecting rod 113', and the rotating member 111 drives the jumper 115 to rotate through the first connecting rod 113. The jumper 115 is engaged with the locking member 114. When the jumper 115 moves, it also drives the bracket 117 and the locking member 114 to move. The moving contact 15 installed on the bracket 117 contacts or separates with the static contact 16 as the bracket 117 moves.

[0058] When the handle 110 is connected to the rotating member 111 via the second connecting rod 113', the handle 110 can be a sliding button, and the circuit breaker 100 can be driven to close or open by sliding the handle 110; the sliding direction of the handle 110 is perpendicular to the panel 101 of the circuit breaker 100, and when the operating mechanism 11 is closed, the handle 110 is flush with the panel 101 of the housing 10.

[0059] On the other hand, an embodiment of the present application further provides a circuit breaker 100, comprising a housing 10 and an operating mechanism 11 such as that of the above embodiment, disposed within the housing 10. The housing 10 further comprises an electromagnetic release 12 and an overload release 13, each located at opposite ends of a latch 114 of the operating mechanism 11. The electromagnetic release 12 is configured to drive the latch 114 to rotate in the event of a short circuit, thereby disengaging the latch 114 from a tripping member 115. The overload release 13 is configured to drive the latch 114 to rotate in the event of an overload, thereby disengaging the latch 114 from the tripping member 115. After the tripping member 115 disengages from the latch 114, the tripping member 115 can rotate relative to the bracket 117 about a rotating shaft mounted on the bracket 117. The bracket 117 is no longer driven by the first connecting rod 113, and the bracket 117 is reset under the action of the second spring 112, causing the movable contact 15 to return with the bracket 117 away from the stationary contact 16.

[0060] Two opposite plug terminals 14 are provided in the housing 10. Current enters from one plug terminal 14 and exits from the other plug terminal 14. After the current enters the housing 10 through one plug terminal 14, it flows through the overload release 13 and the electromagnetic release 12. If the circuit breaker 100 is short-circuited, the short-circuit current flows through the electromagnetic release 12, and the electromagnetic release 12 is actuated to drive the lock member 114 to rotate. After the lock member 114 rotates, it disengages from the tripping member 115, causing the circuit breaker 100 to open. If the circuit breaker 100 is overloaded, the short-circuit current flows through the electromagnetic release 12. The electromagnetic release 12 is actuated to drive the lock member 114 to rotate. After the lock member 114 rotates, it disengages from the tripping member 115, causing the circuit breaker 100 to open. When the overload current flows through the overload release 13, the overload current causes the overload release 13 to heat up and bend, and the end of the overload release 13 bends toward the locking member 114 and pushes the locking member 114 to rotate. After the locking member 114 rotates, it disengages from the tripping member 115, causing the circuit breaker 100 to trip. Therefore, the electromagnetic circuit breaker 100 can trip the circuit breaker 100 when the circuit breaker 100 is short-circuited, and the overload release 13 can trip the circuit breaker 100 when the circuit breaker 100 is overloaded, both of which play a role in protecting the circuit breaker 100.

[0061] Specifically, if Figure 3 As shown, a supporting surface 1141 is provided on the side of the locking member 114 facing the electromagnetic release 12. When the circuit breaker 100 is short-circuited, the electromagnetic release 12 is activated, and the electromagnetic release 12 and the supporting surface 1141 of the locking member 114 are in contact with each other, and the supporting surface 1141 is pushed to drive the locking member 114 to rotate, so that the locking member 114 and the tripping member 115 are disengaged, and the circuit breaker 100 is opened.

[0062] On the other hand, an abutment 1143 is provided at one end of the locking member 114 facing the overload release 13. When the circuit breaker 100 is overloaded, the overload release 13 heats up and bends, causing one end of the overload release 13 to abut against the abutment 1143 of the locking member 114, pushing the abutment 1143 to drive the locking member 114 to rotate, causing the locking member 114 to disengage from the tripping member 115, and the circuit breaker 100 to open.

[0063] When the locking member 114 and the jumping member 115 are engaged with each other, the locking member 114 and the jumping member 115 are engaged or disengaged through the engaging surface 1150 .

[0064] In addition, an electrical isolation surface 1142 is provided on the side of the locking member 114 facing the electromagnetic release 12, and the static contact 16 is electrically connected to the electromagnetic release 12. In the thickness direction F of the shell 10, the width D of the electrical isolation surface 1142 is greater than the width of the moving contact 15 and the width of the static contact 16.

[0065] A moving contact 15 is provided below the electrical isolation surface 1142, and a static contact 16 is provided above the electrical isolation surface 1142. When the width D of the electrical isolation surface 1142 is large, the moving contact 15 and the static contact 16 can be completely isolated to avoid electric sparks when the moving contact 15 and the static contact 16 are in contact or separated.

[0066] Specifically, it can be limited to that in the thickness direction F of the shell 10, the width D of the electrical isolation surface 1142 is greater than the width of the moving contact 15, and at the same time greater than the width of the static contact 16, that is, in the thickness direction F of the shell 10, the electrical isolation surface 1142 can completely block the moving contact 15 and the static contact 16, thereby isolating the moving contact 15 and the static contact 16.

[0067] An arc extinguishing chamber 17 is further provided in the housing 10 . The arc extinguishing chamber 17 is close to the moving contact 15 and the static contact 16 , so as to prevent the arc from being extinguished in case a continuous arc is generated between the moving contact 15 and the static contact 16 .

[0068] The circuit breaker 100 provided in the embodiment of the present application is as follows: Figure 1 As shown, two opposite plug-in terminals 14 are provided on both sides of the inner bottom of the housing 10, the operating mechanism 11 and the moving contact 15 are stepped above the plug-in terminals 14, and are located on the right side of the housing 10 in conjunction with the overload release 13. One end of the handle 110 is matched with the tripping member 115, and the other end is flush with the panel 101 of the housing 10 when the switch is closed. The arc extinguishing chamber 17 is located in the lower left part of the housing, between the two plug-in terminals 14, and the electromagnetic release 12 is tilted and located in the middle of the housing 10, between the operating mechanism 11 and the arc extinguishing chamber 17. This arrangement simplifies the assembly process of the circuit breaker 100, so that no auxiliary tools are required when installing the circuit breaker 100, thereby improving productivity and product qualification rate; the size of the entire circuit breaker 100 is also reduced, and it can be formed as shown in the figure. Figure 6 The square circuit breaker 100 shown is beautiful overall and occupies little space, and is suitable for use in small spaces.

[0069] The circuit breaker 100 includes the same structure and benefits as the operating mechanism 11 in the aforementioned embodiment. The structure and benefits of the operating mechanism 11 have been described in detail in the aforementioned embodiment and will not be repeated here.

[0070] The foregoing description is merely a preferred embodiment of the present application and is not intended to limit the present application. Persons skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. An operating mechanism, characterized in that: The circuit breaker comprises a bracket, a locking member and a tripping member arranged in a housing of the circuit breaker, wherein the bracket is rotatably connected in the housing and the bracket is also rotatably connected to a moving contact in the housing, and the moving contact is used to cooperate with a static contact in the housing; The locking member and the jumping member are rotatably arranged on one side of the bracket, and the moving contact is rotatably arranged on the other side of the bracket. The moving contact, the bracket, the locking member and the jumping member are stepped along the thickness direction of the shell. A handle is also provided on the shell, and the handle is connected to the jumping member. The jumping member and the locking member are buckled together, and the moving contact is driven by the handle to move and contact or separate with the static contact; when the operating mechanism is in the closed position, the side of the handle facing away from the shell is flush with the side of the shell away from the plug-in terminal of the circuit breaker.

2. The operating mechanism according to claim 1, characterized in that: The bracket and the locking member are coaxially connected via a rotating shaft, and a first spring is sleeved on the rotating shaft. One end of the first spring abuts against the bracket, and the other end abuts against the locking member, so that the locking member is reset by the first spring.

3. The operating mechanism according to claim 2, characterized in that: The bracket is rotatably connected to the housing via the rotating shaft, and a second spring is sleeved on the rotating shaft, with two ends of the second spring respectively abutting against the bosses of the bracket and the housing, and the bracket is reset by the second spring; the moving contact is rotatably connected to the bracket via a mounting shaft, and a third spring is sleeved on the mounting shaft, with two ends of the third spring respectively abutting against the moving contact and the bracket, and the moving contact is reset by the third spring.

4. The operating mechanism according to claim 3, characterized in that: One end of the second spring abutting against the bracket is connected to one end of the third spring abutting against the bracket.

5. The operating mechanism according to claim 1, characterized in that: A rotating member is further provided in the housing, the handle is connected to the jumper member via the rotating member, the rotating member and the jumper member are connected via a first connecting rod; the rotating member and the handle are connected via a gear or a second connecting rod.

6. A circuit breaker, characterized in that: The invention comprises a housing and an operating mechanism according to any one of claims 1 to 5 arranged in the housing, wherein an electromagnetic release and an overload release are further arranged in the housing, wherein the electromagnetic release and the overload release are respectively located at two ends of a locking member of the operating mechanism, and when a short-circuit current flows through the electromagnetic release, the electromagnetic release drives the locking member to rotate, so that the locking member and the tripping member are disengaged; When an overload current flows through the overload release, the overload release drives the locking member to rotate, so that the locking member and the tripping member are separated.

7. The circuit breaker according to claim 6, characterized in that The locking member is provided with a supporting surface on one side facing the electromagnetic release, and the electromagnetic release drives the locking member to rotate via the supporting surface; An abutting platform is provided on one end of the locking member facing the overload release, and the overload release drives the locking member to rotate via the abutting platform.

8. The circuit breaker according to claim 6, wherein: An electrical isolation surface is provided on the side of the locking member facing the electromagnetic release, the static contact is electrically connected to the electromagnetic release, and in the thickness direction of the shell, the width of the electrical isolation surface is greater than the width of the moving contact and the width of the static contact.

9. The circuit breaker according to claim 6, wherein: An angle is set between the electromagnetic release and the horizontal plane.

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