Operating mechanism and circuit breaker

Abstract

The utility model provides an operating mechanism and a circuit breaker, and relates to the technical field of low-voltage electrical appliances, the operating mechanism comprises a mechanism seat, a lock catch and a moving contact which are arranged on a shell, the mechanism seat, the lock catch and the moving contact are rotatably connected with the shell through the same connecting shaft, the mechanism seat is connected with a connecting rod, and the other end of the connecting rod is used for being connected with a handle. The handle is driven to push the mechanism seat, the moving contact and the lock catch to rotate synchronously through the connecting rod, so that the moving contact is in contact with or separated from the static contact, and when the lock catch is driven to release, the mechanism seat drives the moving contact to rotate and be separated from the static contact. An area enclosed by a first ray along the first direction and a second ray along the second direction is a movable area, and a connecting point of the connecting rod and the mechanism seat falls in the movable area. According to the operating mechanism and the circuit breaker provided by the invention, the problems that the number of parts of the operating mechanism is large and the occupied space is large in the prior art are solved.

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] Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. Low-voltage circuit breakers are also called automatic switches or air switches. They are electrical appliances that have both the function of a manual switch and can automatically protect against loss of voltage, undervoltage, overload, and short circuit. They can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. When they have serious overloads or short circuits and undervoltage faults, they can automatically cut off the circuit. Their function is equivalent to a combination of a fuse switch and an over- and under-heat relay, and generally no parts need to be changed after breaking the fault current. They have been widely used.

[0003] Specifically, the circuit breaker includes a handle, an operating mechanism connected to the handle, and a moving contact connected to the operating mechanism. The handle drives the moving contact to move through the operating mechanism, and the moving contact contacts or separates from the static contact to achieve closing or opening. Specifically, in order to achieve automatic switching of the circuit in the event of a fault, the operating mechanism includes a bracket and a locking member and a jumper arranged on the bracket. The bracket is rotatably connected in the housing, and the moving contact is also rotatably connected to the bracket. The locking member and the jumper 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 jumper are arranged in a stepped manner along the thickness direction of the housing. When the circuit breaker is in the closed state, when a fault occurs, the jumper is driven to move so that the locking member is unlocked, the locking of the bracket is released, and the moving contact moves in a direction away from the static contact, so that the circuit breaker is opened. The operating mechanism in the prior art has many parts and occupies a large volume. Utility Model Content

[0004] The purpose of the present application is to provide an operating mechanism and a circuit breaker to address the deficiencies in the above-mentioned prior art, so as to solve the problem that the operating mechanism in the prior art has a large number of parts and occupies a large volume.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] On one hand of the embodiment of the present application, an operating mechanism is provided, which includes a mechanism base, a latch, and a moving contact disposed on a housing. The mechanism base, the latch, and the moving contact are rotatably connected to the housing through the same connecting shaft. A connecting rod is connected to the mechanism base, and the other end of the connecting rod is used to connect to a handle. The handle is driven to push the mechanism base, the moving contact, and the latch to rotate synchronously through the connecting rod, so that the moving contact contacts or separates from the static contact. When the latch is driven to release the latch, the mechanism base drives the moving contact to rotate and separate from the static contact. The direction of the rotation axis of the handle towards the connecting shaft is the first direction, and the direction of the connecting shaft towards the contact point of the moving contact and the static contact is the second direction. Taking the connecting shaft as the starting point, the area enclosed by the first ray along the first direction and the second ray along the second direction is the active area, and the connection point of the connecting rod and the mechanism base falls within the active area.

[0007] As an implementable manner, the connecting shaft is located at the ends of the mechanism base, the moving contact, and the latch, and during the opening and closing processes, the mechanism base rotates within the space between the connecting shaft and the static contact.

[0008] As an implementable manner, the static contact is located between the handle and the connecting shaft, and when the moving contact moves away from the static contact, it also moves away from the handle.

[0009] As an implementable manner, the operating mechanism further includes a first elastic member fixedly connected to the mechanism base, and both ends of the first elastic member are respectively connected to the housing and the moving contact. When the mechanism base is driven to rotate, the first elastic member drives the moving contact to approach the static contact and contact the static contact.

[0010] As an implementable manner, a second elastic member is disposed between the mechanism base and the latch, and during the closing and opening processes, the second elastic member is used to make the mechanism base and the latch move synchronously.

[0011] As an implementable manner, a relief groove for placing the moving contact is provided on the mechanism base. After the moving contact contacts the static contact and the mechanism base continues to move, the moving contact moves within the relief groove to achieve closing.

[0012] As an implementable manner, a holding surface that abuts against the moving contact is provided on the side wall of the relief groove.

[0013] As an implementable manner, a holding portion is provided on the latch away from the handle, and the connecting rod abuts against the holding portion to drive the latch to move through the connecting rod. When the latch is driven to rotate and release the latch, the abutment of the holding portion against the connecting rod is withdrawn.

[0014] As an implementable manner, the mechanism base and the latch are connected through a snap component, and the snap component includes a engaging portion extending from the latch towards the mechanism base and a card slot formed by the inward concavity of the mechanism base. The engaging portion extends into the card slot to engage the mechanism base and the latch.

[0015] On the other hand, an embodiment of the present application provides a circuit breaker, including a housing, a handle disposed on the housing, and the above-mentioned operating mechanism. A stationary contact is also disposed inside the housing. The handle drives the moving contact of the operating mechanism to contact or separate from the stationary contact to achieve closing or opening of the circuit breaker.

[0016] The beneficial effects of the present application include:

[0017] The present application provides an operating mechanism, including a mechanism base, a latch, and a moving contact disposed on a housing. The mechanism base, the latch, and the moving contact are rotatably connected to the housing through the same connecting shaft. A connecting rod is connected to the mechanism base, and the other end of the connecting rod is used to connect to the handle. The handle is driven to push the mechanism base, the moving contact, and the latch to rotate synchronously through the connecting rod, so that the moving contact contacts or separates from the stationary contact to achieve closing and opening of the operating mechanism. When the latch is driven to release the buckle, the mechanism base drives the moving contact to rotate and separate from the stationary contact to achieve fault opening. The direction of the rotation axis of the handle towards the connecting shaft is the first direction, and the direction of the connecting shaft towards the contact point of the moving contact and the stationary contact is the second direction. Taking the connecting shaft as the starting point, the area enclosed by the first ray along the first direction and the second ray along the second direction is the active area, and the connection point of the connecting rod and the mechanism base falls within the active area. In the embodiment of the present application, the closing, opening, and fault opening of the operating mechanism can be realized through the mechanism base and the latch. Compared with the operating mechanism in the prior art, the number of components of the operating mechanism and the volume occupied by the operating mechanism are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 One of the state diagrams of an operating mechanism provided by an embodiment of the present application;

[0020] Figure 2 Another state diagram of an operating mechanism provided by an embodiment of the present application;

[0021] Figure 3 Another state diagram of an operating mechanism provided by an embodiment of the present application;

[0022] Figure 4 An exploded view of an operating mechanism provided by an embodiment of the present application;

[0023] Figure 5 A usage state diagram of a first elastic member provided by an embodiment of the present application;

[0024] Figure 6 A structural schematic diagram of a mechanism base provided by an embodiment of the present application;

[0025] Figure 7 A structural schematic diagram of a latch provided by an embodiment of the present application;

[0026] Figure 8 An assembly schematic diagram of a mechanism base and a latch provided by an embodiment of the present application;

[0027] Figure 9 An assembly schematic diagram of a mechanism base and a moving contact provided by an embodiment of the present application.

[0028] Reference numerals: 100 - operating mechanism; 120 - mechanism base; 121 - connecting rod groove; 122 - relief groove; 124 - supporting part; 125 - mounting part; 130 - latch; 132 - abutting part; 140 - moving contact; 150 - connecting shaft; 160 - connecting rod; 170 - first elastic member; 180 - second elastic member; 190 - buckle assembly; 191 - engaging part; 192 - clamping groove; 210 - housing; 211 - limiting part; 220 - static contact; 230 - handle. Detailed implementation manners

[0029] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. Usually, the components of the embodiments of the present application described and illustrated in the accompanying drawings herein can be arranged and designed in various different configurations.

[0030] 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 claimed present application, but merely represents selected embodiments of the present application. It should be noted that, without conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the protection scope of the present application.

[0031] It should be noted that: similar 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.

[0032] In the description of the present application, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected", and "coupled" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] On the one hand, in an embodiment of the present application, as Figure 1 and Figure 3 shown, an operating mechanism 100 is provided, which includes a mechanism base 120, a latch 130, and a moving contact 140 arranged on a housing 210. The mechanism base 120, the latch 130, and the moving contact 140 are rotatably connected to the housing 210 through the same connecting shaft 150. The mechanism base 120 is connected with a connecting rod 160, and the other end of the connecting rod 160 is used to be connected with a handle 230. The handle 230 is driven to push the mechanism base 120, the moving contact 140, and the latch 130 to rotate synchronously through the connecting rod 160, so that the moving contact 140 contacts or separates from a static contact 220. When the latch 130 is driven to release the latch, the mechanism base 120 drives the moving contact 140 to rotate and separate from the static contact 220. The direction of the rotation axis of the handle 230 towards the connecting shaft 150 is the first direction, and the direction of the connecting shaft 150 towards the contact point of the moving contact 140 and the static contact 220 is the second direction. Taking the connecting shaft 150 as the starting point, the area enclosed by the first ray along the first direction and the second ray along the second direction is the active area, and the connection point of the connecting rod 160 and the mechanism base 120 falls within the active area.

[0034] The operating mechanism 100 provided by the embodiment of the present application is applied to a circuit breaker and is used to drive the moving contact 140 to move under the drive of the handle 230 or a tripping signal, so as to realize the contact or separation of the moving contact 140 and the static contact 220. Specifically, the operating mechanism 100 of the embodiment of the present application includes a mechanism base 120, a latch 130, and a moving contact 140 arranged in the housing 210. The mechanism base 120, the latch 130, and the moving contact 140 are all rotatably connected to the housing 210, and the three components are rotatably connected to the housing 210 through the same connecting shaft 150. Among them, the operating mechanism 100 further includes a connecting rod 160. The two ends of the connecting rod 160 are respectively connected to the handle 230 and the mechanism base 120. Among them, the connection line between the connection point of the connecting rod 160 and the handle 230 and the rotation center of the handle 230, the connection line between the connection point of the connecting rod 160 and the mechanism base 120 and the rotation center of the mechanism base 120, the connection line between the rotation center of the handle 230 and the rotation center of the mechanism base 120, and the connecting rod 160 form a four-bar linkage structure to realize the drive of the handle 230 to the mechanism base 120.

[0035] Specifically, as Figure 1As shown, the moving contact 140 is separated from the static contact 220, and the operating mechanism 100 is in the open state. When the circuit breaker needs to be closed, rotate the handle 230 clockwise. The handle 230 drives the mechanism base 120, the latch 130, and the moving contact 140 to rotate counterclockwise through the four-bar linkage 160 structure formed by the connecting rod 160, the handle 230, and the mechanism base 120, so that the moving contact 140 approaches and contacts the static contact 220, as Figure 2 shown. In practical applications, the handle 230 continues to rotate on the basis of Figure 2 so that the handle 230 and the mechanism base 120 reach the closed position to achieve closing, as Figure 3 shown.

[0036] When a fault occurs in the circuit breaker, the fault signal drives the latch 130 to rotate counterclockwise to trip, releasing the locking of the mechanism base 120. At this time, the mechanism base 120 drives the moving contact 140 to rotate, so that the moving contact 140 is separated from the static contact 220 to achieve opening.

[0037] Among them, the embodiment of the present application does not limit the way in which the mechanism base 120 drives the contact 140 to move. For example, an elastic member can be provided between the mechanism base 120 and the housing 210 as Figure 1 shown. When the operating mechanism 100 is closed, the elastic member stores energy. When the latch 130 releases the locking of the mechanism base 120, the elastic member releases elastic potential energy, causing the mechanism base 120 to rotate and the moving contact 140 to rotate; alternatively, a gravity adjustment portion can be provided on the mechanism base 120 to utilize gravity to cause the mechanism base 120 to rotate and drive the moving contact 140 to rotate and separate from the static contact 220 to achieve opening during a fault.

[0038] The embodiment of the present application utilizes the mechanism base 120 and the latch 130 to achieve normal opening and closing and fault opening of the operating mechanism 100. Compared with the operating mechanism 100 in the prior art, the number of components of the operating mechanism 100 and the volume occupied by the operating mechanism 100 are reduced.

[0039] In addition, in the embodiment of the present application, the direction of the rotation axis of the handle 230 towards the connecting shaft 150 is the first direction, and the direction of the connecting shaft 150 towards the contact point of the moving contact 140 and the static contact 220 is the second direction. Taking the connecting shaft 150 as the starting point, the area enclosed by the first ray along the first direction and the second ray along the second direction is the active area (such as Figure 2 the area shown by the dotted line). The connection point of the connecting rod 160 and the mechanism base 120 falls within the active area, so that the size of the connecting rod 160 is relatively long, and the moment of inertia is reduced during the rotation process of the operating mechanism 100.

[0040] The present application provides an operating mechanism 100, which includes a mechanism base 120, a latch 130, and a moving contact 140 disposed on a housing 210. The mechanism base 120, the latch 130, and the moving contact 140 are rotatably connected to the housing 210 through the same connecting shaft 150. The mechanism base 120 is connected with a connecting rod 160, and the other end of the connecting rod 160 is used to connect with a handle 230. The handle 230 is driven to push the mechanism base 120, the moving contact 140, and the latch 130 to rotate synchronously through the connecting rod 160, so that the moving contact 140 contacts or separates from a static contact 220, realizing the closing and opening of the operating mechanism 100. When the latch 130 is driven to release the latch, the mechanism base 120 drives the moving contact 140 to rotate and separate from the static contact 220, realizing a fault opening. In the embodiment of the present application, the closing and opening of the operating mechanism 100 and the fault opening can be realized through the mechanism base 120 and the latch 130. Compared with the operating mechanism 100 in the prior art, the number of components of the operating mechanism 100 and the volume occupied by the operating mechanism 100 are reduced.

[0041] Optionally, as Figure 1 , Figure 2 and Figure 3 shown, the connecting shaft 150 is located at the ends of the mechanism base 120, the moving contact 140, and the latch 130, and during the opening and closing processes, the mechanism base 120 rotates within the space between the connecting shaft 150 and the static contact 220.

[0042] The connecting shaft 150 is disposed at the ends of the mechanism base 120, the moving contact 140, and the latch 130, and the mechanism base 120 always rotates between the connecting shaft 150 and the static contact 220, making the connecting shaft 150 the top of the operating mechanism 100, thereby further reducing the volume of the operating mechanism 100 in the Figure 1 vertical direction, thereby reducing the height of the circuit breaker.

[0043] In an implementable manner of the embodiment of the present application, as Figure 1 and Figure 3 shown, the static contact 220 is located between the handle 230 and the connecting shaft 150, and the moving contact 140 moves away from the static contact 220 and the handle 230 at the same time.

[0044] The static contact 220 is arranged between the handle 230 and the connecting shaft 150. In this way, when the operating mechanism 100 opens, while the moving contact 140 moves away from the static contact 220, it also moves away from the handle 230. That is, when opening, the moving contact 140 moves towards the edge of the housing 210. Those skilled in the art should know that when opening, an arc will be generated on the moving contact 140, and the hot air flow generated by the arc flows out along the air flow channel arranged on the housing 210. The moving contact 140 moves towards the edge of the housing 210, making the arc root transfer direction towards the edge of the housing 210, and the flow direction of the hot air flow is also towards the edge of the housing 210. That is, the arc root transfer direction is the same as the direction of the hot air flow. In this way, it is beneficial for the arc to transfer and achieve arc extinguishing, thereby improving the arc extinguishing effect.

[0045] Optionally, the operating mechanism 100 further includes a first elastic member 170 fixedly connected to the mechanism base 120. The two ends of the first elastic member 170 are respectively connected to the housing 210 and the moving contact 140. When the mechanism base 120 is driven to rotate, the first elastic member 170 drives the moving contact 140 to approach the static contact 220 and contact the static contact 220.

[0046] The operating mechanism 100 includes a first elastic member 170. On the one hand, as a transmission member, the first elastic member 170 transmits the rotation of the mechanism base 120 to the moving contact 140; on the other hand, as a reset member, when the latch 130 releases the locking of the mechanism base 120, it drives the mechanism base 120 to rotate clockwise.

[0047] On the first aspect, the first elastic member 170 is fixed to the mechanism base 120, and the two ends of the first elastic member 170 are respectively connected to the housing 210 and the moving contact 140. When the connecting rod 160 drives the mechanism base 120 to rotate and close, the mechanism base 120 drives the first elastic member 170 to rotate. Since one end of the first elastic member 170 is connected to the housing 210 and is in a static state, the end of the first elastic member 170 in contact with the moving contact 140 moves, thereby pushing the moving contact 140 to rotate, so that the moving contact 140 contacts the static contact 220. When the moving contact 140 contacts the static contact 220, the mechanism base 120 continues to move, causing the first elastic member 170 to store energy. On the contrary, when the connecting rod 160 drives the mechanism base 120 to rotate and open, the first elastic member 170 releases the push on the moving contact 140, causing the moving contact 140 to separate from the static contact 220.

[0048] On the other hand, the first elastic member 170 stores energy after closing. When the latch 130 releases the locking of the mechanism base 120, the first elastic member 170 releases elastic potential energy, pushing the mechanism base 120 and the moving contact 140 to rotate, so that the moving contact 140 separates from the static contact 220, realizing a fault opening.

[0049] Among them, in order to achieve the stability of the driving of the moving contact 140 by the first elastic member 170, a relatively smooth contact surface may be provided at the portion where the moving contact 140 contacts the first elastic member 170.

[0050] In addition, in order to facilitate the fixation of the first elastic member 170 and the housing 210, a limiting portion 211 may be provided on the housing 210. As shown in Figure 4 and Figure 5 , one end of the first elastic member 170 is disposed between the connecting shaft 150 and the limiting portion 211, and the connecting shaft 150 and the limiting portion 211 limit the position of the first elastic member 170 in two directions.

[0051] The first elastic member 170 is used to drive the moving contact 140 and reset the mechanism base 120 and the moving contact 140, so that the contact and separation between the moving contact 140 and the static contact 220 both have good stability.

[0052] Among them, the specific structure of the first elastic member 170 is not limited in the embodiments of the present application. By way of example, it may be a torsion spring such as Figure 4 and Figure 5 , or it may be a compression spring.

[0053] In an implementable manner of the embodiments of the present application, the mechanism base 120 extends a mounting portion 125 towards the housing 210, and the mounting portion 125 is used to mount the first elastic member 170.

[0054] When the first elastic member 170 is a torsion spring, the mounting portion 125 is a mounting post that the mechanism base 120 extends towards the housing 210. The center of the torsion spring is sleeved on the mounting post, and the two ends of the torsion spring are respectively connected to the moving contact 140 and the housing 210.

[0055] When the first elastic member 170 is a compression spring, the mounting portion 125 includes a connecting portion that the mechanism base 120 extends towards the housing 210 and a mounting post connected to the end of the connecting portion. The mounting post extends towards the connecting shaft 150, and one end of the compression spring is sleeved on the mounting post.

[0056] As an implementable manner, a second elastic member 180 is provided between the mechanism base 120 and the lock 130. During the closing and opening processes, the second elastic member 180 is used to make the mechanism base 120 and the lock 130 move synchronously.

[0057] The second elastic member 180 is disposed between the mechanism base 120 and the lock 130 and is used to fix the relative positions of the mechanism base 120 and the lock 130. Specifically, as shown in Figure 1As shown, the second elastic member 180 is a torsion spring. The torsion spring is sleeved on the connecting shaft 150. One end of the torsion spring abuts against the edge of the lock 130, and the other end abuts against the edge of the mechanism base 120. In this way, during the rotation of the mechanism base 120 and the lock 130, their rotation angles are the same, and the lock 130 is not easily separated from the mechanism base 120, improving the stability of the operating mechanism 100 during operation.

[0058] In practical applications, in order to increase the opening speed during a fault opening, a link groove 121 is provided on the mechanism base 120. The end of the link 160 is arranged in the link groove 121. When the lock 130 is tripped, the link 160 slides in the link groove 121.

[0059] Both ends of the link 160 are respectively connected to the handle 230 and the mechanism base 120. During a fault opening, the lock 130 cancels the abutting force on the link 160, causing the mechanism base 120 to rotate under the action of the restoring force. The link 160 needs to drive the handle 230 to rotate during movement, resulting in a slower opening speed. In the embodiment of the present application, in order to avoid the problem that the linkage of the link 160 causes the opening speed to slow down, a link groove 121 is provided on the mechanism base 120. When the lock 130 cancels the abutting on the link 160, the end of the link 160 slides in the link groove 121, so that the link 160 does not affect the movement of the mechanism base 120, thereby increasing the fault opening speed.

[0060] It can be understood that when the operating mechanism 100 is closed, the link 160 is stressed. In order to prevent the link 160 from being stressed and disengaging from the link groove 121, a supporting portion 124 is provided on the side of the link groove 121 in the embodiment of the present application, as Figure 6 and Figure 3 shown. When the operating mechanism 100 is closed, the link 160 abuts against the supporting portion 124. The supporting portion 124 increases the abutting area between the mechanism base 120 and the connection, thereby increasing the stability of the link 160. Among them, the specific structure of the supporting portion 124 is not limited in the embodiment of the present application, as long as it has an outwardly protruding supporting surface.

[0061] Optionally, a relief groove 122 for placing the moving contact 140 is provided on the mechanism base 120. After the moving contact 140 contacts the static contact 220 and the mechanism base 120 continues to move, the moving contact 140 moves in the relief groove 122 to achieve closing.

[0062] As can be seen from the working principle of the above operating mechanism 100, during the closing process of the operating mechanism 100, after the moving contact 140 contacts the static contact 220, the handle 230, the latch 130, and the mechanism base 120 still need to continue to move to reach the closing position. That is, after the moving contact 140 contacts the static contact 220, relative rotation will occur between the moving contact 140 and the mechanism base 120. In order to prevent the moving contact 140 and the mechanism base 120 from interfering with each other during the relative rotation process, a relief groove 122 is provided on the mechanism base 120. When relative rotation occurs between the moving contact 140 and the mechanism base 120, the moving contact 140 rotates within the relief groove 122, and the mechanism base 120 continues to move to achieve closing.

[0063] In one possible implementation of the embodiment of the present application, as Figure 9 shown, a holding surface that abuts against the moving contact 140 is provided on the side wall of the relief groove 122.

[0064] One end of the first elastic member 170 contacts the moving contact 140. To prevent the potential energy of the first elastic member 170 from causing the moving contact 140 to rotate counterclockwise too much, a holding surface 123 is provided on the side wall of the relief groove 122 in the embodiment of the present application. Before the moving contact 140 contacts the static contact 220 during the closing process and during the opening process, the moving contact 140 contacts the holding surface 123, and the holding surface 123 hinders the continuous movement of the moving contact 140, enabling the moving contact 140 to move stably.

[0065] Optionally, a holding portion 132 is provided on the latch 130 away from the handle 230. The connecting rod 160 abuts against the holding portion 132 to drive the latch 130 to move through the connecting rod 160. When the latch 130 is driven to rotate and release the latch, the abutment of the holding portion 132 against the connecting rod 160 is cancelled.

[0066] The connecting rod 160 pushes the latch 130 to rotate. To achieve stable pushing of the latch 130 by the connecting rod 160, a holding portion 132 is provided in the embodiment of the present application. When the latch 130 is driven to rotate, the holding portion 132 rotates with the latch 130, so that the holding portion 132 cancels the holding force on the connecting rod 160. At this time, the mechanism base 120 is reset under the action of the restoring force.

[0067] In one possible implementation of the embodiment of the present application, the mechanism base 120 and the latch 130 are connected by a snap component 190. The snap component 190 includes a engaging portion 191 extending from the latch 130 towards the mechanism base 120 and a slot 192 formed by the concave of the mechanism base 120. The engaging portion 191 extends into the slot 192 to engage the mechanism base 120 and the latch 130.

[0068] To achieve locking of the latch 130 to the mechanism base 120, a snap component 190 is provided between the mechanism base 120 and the latch 130. Specifically, asFigure 7 As shown in the figure, the buckle assembly 190 includes an engaging portion 191 extending from the latch 130 towards the mechanism base 120 and a slot 192 formed by the concave portion of the mechanism base 120. The engaging portion 191 extends into the slot 192 to engage the mechanism base 120 and the latch 130.

[0069] Specifically, the engaging portion 191 may include a connecting section and an engaging section. As Figure 8 shown in the figure, the connecting section crosses a part of the side wall of the mechanism base 120, and the engaging section engages with the side wall of the mechanism base 120. With this setting, while the latch 130 locks the closing state of the operating mechanism 100, it can also prevent the latch 130 from disengaging from the mechanism base 120 along the hierarchical direction, improving the stability of the operating mechanism 100.

[0070] The embodiment of the present application also discloses a circuit breaker, which includes a housing 210, a handle 230 provided on the housing 210, and the above-mentioned operating mechanism 100. A static contact 220 is also provided inside the housing 210. The handle 230 drives the moving contact 140 of the operating mechanism 100 to contact or separate from the static contact 220 to realize the closing or opening of the circuit breaker. This circuit breaker has the same structure and beneficial effects as the operating mechanism 100 in the foregoing embodiment. The structure and beneficial effects of the operating mechanism 100 have been described in detail in the foregoing embodiment and will not be elaborated here.

[0071] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. An operating mechanism, characterized in that: The invention comprises a mechanism seat (120), a lock catch (130) and a moving contact (140) which are arranged on a housing (210); the mechanism seat (120), the lock catch (130) and the moving contact (140) are rotatably connected to the housing (210) via a common connecting shaft (150); a connecting rod (160) is connected to the mechanism seat (120); the other end of the connecting rod (160) is used to be connected to a handle (230); the handle (230) is driven by the connecting rod (160) to push the mechanism seat (120), the moving contact (140) and the lock catch (130) to rotate synchronously, so that the moving contact (140) and the stationary contact (230) are rotated synchronously. 20) is in contact or separation, when the lock (130) is driven to disengage, the mechanism seat (120) drives the moving contact (140) to rotate and separate from the static contact (220), the direction of the rotation axis of the handle (230) toward the connecting axis (150) is the first direction, the direction of the connecting axis (150) toward the contact point between the moving contact (140) and the static contact (220) is the second direction, with the connecting axis (150) as the starting point, the area enclosed by the first ray along the first direction and the second ray along the second direction is the active area, and the connection point between the connecting rod (160) and the mechanism seat (120) falls within the active area.

2. The operating mechanism according to claim 1, characterized in that: The connecting shaft (150) is located at the ends of the mechanism seat (120), the moving contact (140) and the lock (130), and during the opening and closing process, the mechanism seat (120) rotates in the space between the connecting shaft (150) and the stationary contact (220).

3. The operating mechanism according to claim 1, characterized in that: The stationary contact (220) is located between the handle (230) and the connecting shaft (150), and the moving contact (140) is away from the stationary contact (220) and the handle (230).

4. The operating mechanism according to claim 1, characterized in that: It also includes a first elastic member (170) fixedly connected to the mechanism seat (120), wherein two ends of the first elastic member (170) are respectively connected to the housing (210) and the moving contact (140), and when the mechanism seat (120) is driven to rotate, the first elastic member (170) drives the moving contact (140) to approach the static contact (220) and contact the static contact (220).

5. The operating mechanism according to claim 1, characterized in that: A second elastic member (180) is arranged between the mechanism seat (120) and the lock catch (130); during the closing and opening process, the second elastic member (180) is used to make the mechanism seat (120) and the lock catch (130) move synchronously.

6. The operating mechanism according to claim 1, characterized in that: The mechanism seat (120) is provided with a clearance groove (122) for accommodating the moving contact (140); after the moving contact (140) contacts the stationary contact (220), when the mechanism seat (120) continues to move, the moving contact (140) moves in the clearance groove (122) to achieve closing.

7. The operating mechanism according to claim 6, characterized in that: The side wall of the clearance groove (122) is provided with a supporting surface for supporting the moving contact (140).

8. The operating mechanism according to claim 1, characterized in that: The lock buckle (130) is provided with a supporting portion (132) away from the handle (230), and the connecting rod (160) is in contact with the supporting portion (132) so as to drive the lock buckle (130) to move through the connecting rod (160); when the lock buckle (130) is driven to rotate and disengage, the supporting portion (132) is released from the supporting portion (132) to the connecting rod (160).

9. The operating mechanism according to claim 1, characterized in that: The mechanism seat (120) and the lock buckle (130) are connected via a buckle assembly (190); the buckle assembly (190) comprises a clamping portion (191) of the lock buckle (130) extending toward the mechanism seat (120) and a clamping groove (192) formed concavely in the mechanism seat (120); the clamping portion (191) extends into the clamping groove (192) so that the mechanism seat (120) and the lock buckle (130) are clamped.

10. A circuit breaker, characterized in that: The invention comprises a housing (210), a handle (230) arranged on the housing (210), and an operating mechanism (100) according to any one of claims 1 to 9, wherein a static contact (220) is further arranged in the housing (210), and the handle (230) drives a moving contact (140) of the operating mechanism (100) to contact or separate from the static contact (220) to realize closing or opening of the circuit breaker.

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