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 in 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, the other end of the connecting rod is used for being connected with a handle, and the handle is connected with the lock catch. The handle is driven to push the mechanism base, the lock catch and the moving contact to rotate synchronously through the connecting rod so that the moving contact can make contact with or be separated from the static contact, when the lock catch is driven to release, the mechanism base drives the moving contact to rotate and be separated from the static contact, the connecting shaft serves as a starting point, and an area defined by a first ray in the first direction and a second ray in the second direction serves as a movable area. The connecting point of the connecting rod and the mechanism base is located in the movable area. According to the operating mechanism and the circuit breaker provided by the invention, the problem that the operating mechanism in the prior art has a large number of parts and occupies a large volume is 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 and 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. Its function is equivalent to a combination of a fuse switch and an over-underheating relay, and generally no parts need to be changed after breaking the fault current, so it has been widely used.

[0003] Specifically, the circuit breaker includes a handle, an operating mechanism connected to the handle in a transmission manner, 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 many 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 the one hand of the embodiment of the present application, an operating mechanism is provided, which includes a mechanism seat, a latch and a moving contact arranged in a housing. The mechanism seat, 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 seat, and the other end of the connecting rod is used to connect to a handle. The handle is driven to push the mechanism seat, the latch and the moving contact 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 buckle, the mechanism seat drives the moving contact to rotate and separate from the static contact. The direction of the connecting shaft towards the rotation axis of the handle 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 seat falls within the active area.

[0007] As an implementable manner, the operating mechanism further includes a first elastic member fixedly connected to the mechanism seat. The two ends of the first elastic member are respectively connected to the housing and the moving contact. When the mechanism seat is driven to rotate, the first elastic member drives the moving contact to approach the static contact and contact the static contact.

[0008] As an implementable manner, the mechanism seat extends towards the housing with a mounting portion for mounting the first elastic member.

[0009] As an implementable manner, a second elastic member is arranged between the mechanism seat and the latch. During the closing and opening processes, the second elastic member is used to make the mechanism seat and the latch move synchronously.

[0010] As an implementable manner, a release portion and a supporting portion are respectively arranged at opposite ends of the latch. The supporting portion is arranged close to the handle, and the connecting rod abuts against the supporting portion to drive the latch to move through the connecting rod. When the release portion is driven to rotate and release the buckle, the abutment of the supporting portion against the connecting rod is cancelled.

[0011] As an implementable manner, a connecting rod groove is arranged on the mechanism seat, and the end of the connecting rod is arranged in the connecting rod groove. When the latch releases the buckle, the connecting rod slides in the connecting rod groove.

[0012] As an implementable manner, the mechanism seat and the latch are connected through a buckle assembly. The buckle assembly includes a engaging portion extending from the latch towards the mechanism seat and a card slot formed by the concave of the mechanism seat. The engaging portion extends into the card slot to make the mechanism seat and the latch engage.

[0013] As an implementable manner, a relief groove for placing the moving contact is arranged on the mechanism seat. After the moving contact contacts the static contact, when the mechanism seat continues to move, the moving contact moves in the relief groove to realize closing.

[0014] As an implementable manner, a supporting surface for abutting against the moving contact is arranged on the side wall of the relief groove. During the movement of the moving contact towards the static contact, the supporting surface abuts against the moving contact.

[0015] On the other hand of the embodiments of the present application, a circuit breaker is provided, which includes a housing, a handle disposed on the housing, and the above-mentioned operating mechanism. A static contact is further disposed in the housing, and the handle drives the moving contact of the operating mechanism to contact or separate from the static contact to realize the closing or opening of the circuit breaker.

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

[0017] The present application provides an operating mechanism, which includes a mechanism base, a latch, and a moving contact disposed in the housing. The mechanism base, the latch, and the moving contact are rotationally 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 latch, and the moving contact to rotate synchronously through the connecting rod, so that the moving contact contacts or separates from the static contact to realize the closing and opening of the operating mechanism. When the latch is driven to release, the mechanism base drives the moving contact to rotate and separate from the static contact to realize fault opening. The direction of the connecting shaft towards the rotation axis of the handle 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. The connection point of the connecting rod and the mechanism base falls within the active area. The embodiments of the present application can realize the closing, opening, and fault opening of the operating mechanism through the mechanism base and the latch. Compared with the operating mechanisms in the prior art, the number of components of the operating mechanism and the volume occupied by the operating mechanism are reduced. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used 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 a limitation of 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 It is one of the state diagrams of an operating mechanism provided by an embodiment of the present application;

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

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

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

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

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

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

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

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

[0028] Icon: 100 - operating mechanism; 120 - mechanism base; 121 - connecting rod groove; 122 - relief groove; 123 - abutting surface; 124 - supporting part; 125 - mounting part; 130 - latch; 131 - tripping part; 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; 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 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 drawings is not intended to limit the scope of the present application claimed, 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 limited, the terms "arrangement", "installation", "connection", and "linkage" 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 a direct connection or an indirect connection 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 one hand of the 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 in 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 latch 130, and the moving contact 140 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 connecting shaft 150 towards the rotation axis of the handle 230 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 activity area, and the connection point of the connecting rod 160 and the mechanism base 120 falls within the activity 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 a 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, and 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 160 structure to realize the drive of the handle 230 to the mechanism base 120.

[0035] Specifically, as Figure 1 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 to make 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. By way of 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, the direction of the connecting shaft 150 toward the rotation axis of the handle 230 is the first direction, and the direction of the connecting shaft 150 toward 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 3 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 connecting rod 160 has a shorter dimension, the space occupied by the operating mechanism is smaller, and the contact pressure between the moving contact and the static contact is smaller.

[0040] The present application provides an operating mechanism 100, which includes a mechanism base 120, a latch 130, and a moving contact 140 disposed within 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. A connecting rod 160 is connected to the mechanism base 120, and the other end of the connecting rod 160 is used to connect to a handle 230. The handle 230 is driven to push the mechanism base 120, the latch 130, and the moving contact 140 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 trip, the mechanism base 120 drives the moving contact 140 to rotate and separate from the static contact 220, realizing fault opening. In the embodiment of the present application, the closing, opening, and fault opening of the operating mechanism 100 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 4 and Figure 5 shown, the operating mechanism 100 further includes a first elastic member 170 fixedly connected to the mechanism base 120. Both 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.

[0042] The operating mechanism 100 includes a first elastic member 170. On the one hand, the first elastic member 170 serves as a transmission member to transmit the rotation of the mechanism base 120 to the moving contact 140; on the other hand, the first elastic member 170 serves 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.

[0043] In the first aspect, the first elastic member 170 is fixed to the mechanism base 120, and both 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 for closing, 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 for opening, the first elastic member 170 releases the push on the moving contact 140, so that the moving contact 140 separates from the static contact 220.

[0044] 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 fault tripping.

[0045] Among them, in order to realize the stability of the driving of the moving contact 140 by the first elastic member 170, the contact surface between the moving contact 140 and the first elastic member 170 can be set to be relatively smooth.

[0046] Using the first elastic member 170 to realize the driving of the moving contact 140 and the reset of the mechanism base 120 and the moving contact 140 makes the contact and separation of the moving contact 140 and the static contact 220 have better stability.

[0047] 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 can be such as Figure 4 and Figure 5 a torsion spring, or it can also be a compression spring.

[0048] In an implementable manner of the embodiments of the present application, the mechanism base 120 extends an installation portion 125 towards the housing 210, and the installation portion 125 is used for installing the first elastic member 170.

[0049] When the first elastic member 170 is a torsion spring, the installation portion 125 is an installation column that the mechanism base 120 extends towards the housing 210, the center of the torsion spring is sleeved on the installation column, and the two ends of the torsion spring are respectively connected to the moving contact 140 and the housing 210.

[0050] When the first elastic member 170 is a compression spring, the installation portion 125 includes a connection portion that the mechanism base 120 extends towards the housing 210 and an installation column connected to the end of the connection portion. The installation column extends towards the connection shaft, and one end of the compression spring is sleeved on the installation column.

[0051] The installation portion 125 is provided on the mechanism base 120 to realize the installation of the first elastic member 170, so that the position of the first elastic member 170 relative to the mechanism base 120 is relatively stable, improving the stability of the operating mechanism 100 during operation.

[0052] Optionally, as shown in Figure 1 and Figure 4 , a second elastic member 180 is provided between the mechanism base 120 and the latch 130. During the closing and tripping processes, the second elastic member 180 is used to make the mechanism base 120 and the latch 130 move synchronously.

[0053] The second elastic member 180 is provided between the mechanism base 120 and the latch 130 and is used to fix the relative positions of the mechanism base 120 and the latch 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 latch 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 latch 130, their rotation angles are the same, and the latch 130 is not easily separated from the mechanism base 120, improving the stability of the operating mechanism 100 during operation.

[0054] In an implementable manner of the embodiment of the present application, as Figure 1 , Figure 7 and Figure 8 shown, the opposite ends of the latch 130 are respectively provided with a release portion 131 and a abutting portion 132. The abutting portion 132 is arranged close to the handle 230. The connecting rod 160 abuts against the abutting portion 132 to drive the latch 130 to move through the connecting rod 160. When the release portion 131 is driven to rotate and release the latch, the abutting of the abutting portion 132 against the connecting rod 160 is cancelled.

[0055] As can be seen from the above, the connecting rod 160 pushes the latch 130 to rotate. In order to achieve the stable pushing of the latch 130 by the connecting rod 160, the abutting portion 132 is provided in the embodiment of the present application. In addition, in order to facilitate the rotation of the latch 130 by the release assembly, the release portion 131 is provided. Specifically, the opposite ends of the latch 130 are respectively provided with a release portion 131 and an abutting portion 132. Among them, the abutting portion 132 is arranged close to the handle 230. The connecting rod 160 abuts against the abutting portion 132, and the connecting rod 160 pushes the abutting portion 132 to drive the latch 130 to rotate.

[0056] When the release portion 131 is driven to rotate, the abutting portion 132 rotates along with the latch 130, so that the abutting force of the abutting portion 132 against the connecting rod 160 is cancelled. At this time, the mechanism base 120 is reset under the action of the restoring force.

[0057] Optionally, a connecting rod groove 121 is provided on the mechanism base 120. The end of the connecting rod 160 is arranged in the connecting rod groove 121. When the latch is released, the connecting rod 160 slides in the connecting rod groove 121.

[0058] The two ends of the connecting rod 160 are respectively connected to the handle 230 and the mechanism base 120. During a fault opening, the latch 130 cancels the abutting force against the connecting rod 160, causing the mechanism base 120 to rotate under the action of the restoring force. The connecting rod 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 connecting rod 160 causes a slower opening speed, a connecting rod groove 121 is provided on the mechanism base 120. When the latch 130 cancels the abutting against the connecting rod 160, the end of the connecting rod 160 slides in the connecting rod groove 121, so that the connecting rod 160 does not affect the movement of the mechanism base 120, thereby improving the fault opening speed.

[0059] It can be understood that when the operating mechanism 100 is closed, the connecting rod 160 is stressed. To prevent the connecting rod 160 from being disengaged from the connecting rod groove 121 under stress, in the embodiment of the present application, a supporting portion 124 is provided on the side of the connecting rod groove 121. As Figure 6 and Figure 3 shown, when the operating mechanism 100 is closed, the connecting rod 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 connecting rod 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.

[0060] In one achievable manner of the embodiment of the present application, as Figure 6 、 Figure 7 and Figure 8 shown, the mechanism base 120 and the latch 130 are connected by a snap component 190. The snap component 190 includes an engaging portion 191 protruding from the latch 130 towards the mechanism base 120 and a card slot 192 formed by the inward concavity of the mechanism base 120. The engaging portion 191 extends into the card slot 192 to engage the mechanism base 120 and the latch 130.

[0061] To achieve the 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, as Figure 7 shown, the snap component 190 includes an engaging portion 191 protruding from the latch 130 towards the mechanism base 120 and a card slot 192 formed by the inward concavity of the mechanism base 120. The engaging portion 191 extends into the card slot 192 to engage the mechanism base 120 and the latch 130.

[0062] Specifically, the engaging portion 191 may include a connecting section and an engaging section. As Figure 8 shown, the connecting section straddles a part of the side wall of the mechanism base, and the engaging section engages with the side wall of the mechanism base. With this setting, while achieving the locking of the latch 130 in the closed 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.

[0063] Optionally, as Figure 6 and Figure 9 shown, 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, when the mechanism base 120 continues to move, the moving contact 140 moves within the relief groove 122 to achieve closing.

[0064] As can be seen from the working principle of the above-mentioned 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 locking 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.

[0065] In one possible implementation of the embodiment of the present application, as Figure 6 shown, a holding surface 123 that abuts against the moving contact 140 is provided on the side wall of the relief groove 122. During the movement of the moving contact 140 towards the static contact 220, the holding surface 123 abuts against the moving contact 140.

[0066] 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 too much in the counterclockwise direction, the embodiment of the present application provides a holding surface 123 on the side wall of the relief groove 122. 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.

[0067] The embodiment of the present application also discloses a circuit breaker, including 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 achieve 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 herein.

[0068] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and changes can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in 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 in 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 lock catch (130) and the moving contact (140) to rotate synchronously, so that the moving contact (140) and the stationary contact (140) are rotated synchronously. When the locking catch (130) is driven to release, the mechanism seat (120) drives the moving contact (140) to rotate and separate from the static contact (220), the direction of the connecting shaft (150) toward the rotation axis of the handle (230) is the first direction, and the direction of the connecting shaft (150) toward the contact point between the moving contact (140) and the static contact (220) is the second direction. With 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 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: 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).

3. The operating mechanism according to claim 2, characterized in that: The mechanism seat (120) has a mounting portion (125) extending toward the housing (210), and the mounting portion (125) is used to mount the first elastic member (170).

4. 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.

5. The operating mechanism according to claim 1, characterized in that: The lock buckle (130) is provided with a release portion (131) and a supporting portion (132) at two opposite ends thereof, and the supporting portion (132) is provided close to the handle (230). The connecting rod (160) is supported by the supporting portion (132) so as to drive the lock buckle (130) to move through the connecting rod (160). When the release portion (131) is driven to rotate and release, the supporting portion (132) is cancelled from supporting the connecting rod (160).

6. The operating mechanism according to claim 5, characterized in that: A connecting rod groove (121) is provided on the mechanism seat (120), and an end of the connecting rod (160) is arranged in the connecting rod groove (121). When the lock catch is released, the connecting rod (160) slides in the connecting rod groove (121).

7. 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.

8. 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.

9. The operating mechanism according to claim 8, characterized in that: The side wall of the clearance groove (122) is provided with a supporting surface (123) that is in contact with the moving contact (140); when the moving contact (140) moves toward the stationary contact (220), the supporting surface (123) is in contact with the moving contact (140).

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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