An operating mechanism and circuit breaker

Abstract

The application discloses an operating mechanism and a circuit breaker, and relates to the technical field of low-voltage electric appliances. The operating mechanism comprises a control assembly, a rotating assembly and a first auxiliary part which are arranged in a shell; the control assembly and the first auxiliary part are rotationally connected with the rotating assembly; a contact seat of the rotating assembly is fixedly connected with a moving contact in the shell; the first auxiliary part is located on a side of the contact seat which is away from a static contact in the shell; one end of the first auxiliary part is abutting against the contact seat, and the other end is fixedly connected with an elastic part; the control assembly controls the rotating assembly to rotate; the rotating assembly drives the moving contact to approach or be away from the static contact; the moving contact is in contact with the static contact; and the elastic part is in a stretching state. The operating mechanism provided by the application continuously provides the moving contact with the pressure for approaching the static contact in the closing state, and separates the moving contact and the static contact quickly in the opening process, so that the burning of the arc between the moving contact and the static contact is reduced, and the service life of the circuit breaker is prolonged.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more specifically, to an operating mechanism and a circuit breaker. Background Technology

[0002] When a fault current occurs in a circuit, a circuit breaker can quickly disconnect the circuit, thereby ensuring that the power grid is not damaged. Traditional circuit breakers typically use instantaneous trip units for overcurrent protection. When a fault current occurs, the instantaneous trip unit is used to trip the circuit breaker.

[0003] However, in the initial stage of a high-current fault, before the instantaneous trip unit unlocks the circuit breaker, the moving contacts are affected by electrodynamic repulsion, causing them to tend to move away from the stationary contacts, resulting in a very small gap between them. After the circuit breaker unlocks, during the initial opening phase of the mechanism, the slow separation of the moving and stationary contacts also creates a small gap. This small gap allows an electric arc to continuously burn between the moving and stationary contacts, leading to significant contact wear and affecting the circuit breaker's service life. Summary of the Invention

[0004] The purpose of this invention is to provide an operating mechanism and a circuit breaker that can press the moving contact against the stationary contact when the moving contact is moved away from the stationary contact by an electric repulsion force, and pull the moving contact after unlocking to quickly separate it from the stationary contact.

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

[0006] An operating mechanism includes a control component, a rotating component, and a first auxiliary component disposed within a housing. The control component and the first auxiliary component are rotatably connected to the rotating component. The contact seat of the rotating component is fixedly connected to a moving contact within the housing. The first auxiliary component is located on the side of the contact seat away from the stationary contact within the housing. One end of the first auxiliary component abuts against the contact seat, and the other end is fixedly connected to an elastic element. The control component controls the rotating component to rotate, and the rotating component drives the moving contact to approach or move away from the stationary contact. The moving contact contacts the stationary contact, and the elastic element is in a stretched state.

[0007] Optionally, as an implementable method, the contact seat is provided with a limiting groove on the side facing the first auxiliary member, and the first auxiliary member is provided with opposing limiting shafts on both sides. The first auxiliary member extends into the limiting groove, and the limiting shafts overlap the upper surface of the limiting groove. The upper surface of the limiting groove is divided into a straight part and a recessed part that are connected to each other. The limiting shaft slides into the recessed part, and the first auxiliary member fixes the contact seat.

[0008] Optionally, as an implementable method, the rotating assembly also includes a bracket and a jump fastener and a locking fastener rotatably connected to the bracket. The jump fastener and the locking fastener engage with each other and disengage from each other. The elastic element pulls the first auxiliary element to rotate the bracket, and the bracket pushes the contact seat to rotate to separate the moving contact from the stationary contact.

[0009] Optionally, as an implementable method, the bracket and the contact seat abut against each other, the jump fastener and the first auxiliary component are coaxially arranged, and the locking fastener, the contact seat and the bracket are coaxially arranged.

[0010] Optionally, as an implementable method, the operating mechanism further includes a trip unit, which includes a trip unit body and a first horizontal bar, a vertical bar, and a second horizontal bar connected in sequence. The first horizontal bar and the second horizontal bar are perpendicular to the vertical bar, and the first horizontal bar and the second horizontal bar are perpendicular to each other. The first horizontal bar is connected to the trip unit body and extends into or out of the trip unit body. A locking element is located between the first horizontal bar, the second horizontal bar, and the trip unit body. The second horizontal bar pulls the locking element to rotate so that the locking element separates from the tripping element.

[0011] Optionally, as one implementable approach, the control assembly includes a button slidably disposed on the housing and a first link, a rotating member, and a second link disposed within the housing and rotatably connected to the button in sequence, the second link also being rotatably connected to a rotating assembly.

[0012] Optionally, as an implementable approach, the side of the bracket is provided with a groove, and the first auxiliary component and the contact seat are both disposed in the groove.

[0013] Optionally, as an implementable approach, the elastic element is located on the side of the support away from the moving contact, and the end of the elastic element is fixedly connected to the housing.

[0014] Optionally, as an implementable approach, a second auxiliary component is rotatably disposed within the housing. The second auxiliary component is located between the button and the contact seat. One end of the second auxiliary component can abut against the contact seat during the closing process to restrict the movement of the moving contact. The other end of the second auxiliary component can rotate under the drive of the button to separate from the contact seat.

[0015] A circuit breaker includes a housing and an operating mechanism, as described above, disposed within the housing.

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

[0017] The operating mechanism provided by this invention includes a control component, a rotating component, and a first auxiliary component disposed within a housing. The control component and the first auxiliary component are rotatably connected to the rotating component. The contact seat of the rotating component is fixedly connected to a moving contact within the housing. The first auxiliary component is located on the side of the contact seat away from the stationary contact within the housing. One end of the first auxiliary component abuts against the contact seat, and the other end is fixedly connected to an elastic element. The control component controls the rotation of the rotating component, which drives the moving contact to approach or move away from the stationary contact. The moving contact contacts the stationary contact, and the elastic element is in a stretched state. By providing the first auxiliary component, the operating mechanism continuously provides pressure to the moving contact close to the stationary contact during the closing state. When the moving contact is affected by an electric repulsive force and tends to move away from the stationary contact, the moving contact is pressed tightly against the stationary contact. During the opening process, the moving contact is pulled, causing it to quickly increase the distance between the moving and stationary contacts, allowing the arc between them to move rapidly towards the arc-extinguishing chamber. This effectively reduces arc burning between the moving and stationary contacts, lowers contact losses, and improves the service life of the circuit breaker. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is one of the structural schematic diagrams of a circuit breaker in the closed state provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the circuit breaker in the open state provided in an embodiment of the present invention;

[0021] Figure 3 This is one of the structural schematic diagrams of the operating mechanism in the closed state provided in the embodiments of the present invention;

[0022] Figure 4 This is a schematic diagram of the operating mechanism in the open state provided in an embodiment of the present invention;

[0023] Figure 5 This is the second schematic diagram of the operating mechanism in the closed state provided in the embodiment of the present invention;

[0024] Figure 6 This is the second schematic diagram of the circuit breaker in the closed state provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the first auxiliary component in the operating mechanism provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the operation of the second auxiliary component in the operating mechanism provided in an embodiment of the present invention.

[0027] Icons: 100-Operating mechanism; 110-Control component; 111-Button; 112-First link; 113-Rotating component; 114-Second link; 120-Rotating component; 121-Contact seat; 1211-Limiting groove; 1211a-Straight part; 1211b-Recessed part; 122-Bracket; 1221-Groove; 123-Extend fastener; 124-Locking fastener; 125-Elastic component; 126-Fixed shaft; 130-First auxiliary component; 131-Limiting shaft; 141-First horizontal bar; 142-Vertical bar; 143-Second horizontal bar; 144-Trip release body; 150-Second auxiliary component; 200-Circuit breaker; 210-Housing; 211-Boss; 220-Moving contact; 230-Stationary contact. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this invention, it should be noted that the terms "center," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0032] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0034] Please refer to Figure 1 and Figure 2 This embodiment provides an operating mechanism 100, which includes a control component 110, a rotating component 120, and a first auxiliary component 130 disposed within a housing 210. The control component 110 and the first auxiliary component 130 are rotatably connected to the rotating component 120. The contact seat 121 of the rotating component 120 is fixedly connected to the moving contact 220 within the housing 210. The first auxiliary component 130 is located on the side of the contact seat 121 away from the stationary contact 230 within the housing 210. One end of the first auxiliary component 130 abuts against the contact seat 121, and the other end is fixedly connected to the elastic member 125. The control component 110 controls the rotating component 120 to rotate, and the rotating component 120 drives the moving contact 220 to approach or move away from the stationary contact 230. The moving contact 220 contacts the stationary contact 230, and the elastic member 125 is in a stretched state.

[0035] The operating mechanism 100 is located inside the housing 210 of the circuit breaker 200 and is used to open and close the circuit breaker 200. Please refer to the reference. Figure 3 and Figure 4Specifically, the operating mechanism 100 includes a control component 110, a rotating component 120, and a first auxiliary component 130. One end of the control component 110 is rotatably connected to the rotating component 120, and the other end is used for manual operation to control the opening and closing of the circuit breaker 200. The rotating component 120 is rotatably disposed within the housing 210 and includes a contact seat 121. The contact seat 121 is fixedly connected to the moving contact 220 within the housing 210 of the circuit breaker 200. The moving contact 220 follows the rotating component 120 to move closer to or further away from the stationary contact 230, thereby realizing the closing or opening of the circuit breaker 200. The first auxiliary component 130 is rotatably disposed on the rotating component 120 and located on the side of the contact seat 121 away from the stationary contact 230. One end of the first auxiliary component 130 abuts against the contact seat 121, providing support to the contact seat 121. When the moving contact 220 is affected by the electric repulsion force and tends to move away from the stationary contact 230, the end of the first auxiliary component 130 restricts the movement of the moving contact 220 by pressing the contact seat 121, effectively reducing the contact fall-back phenomenon. The other end of the first auxiliary component 130 is connected to the housing 210 through the elastic component 125. When the operating mechanism 100 is in the closed state, the elastic component 125 is in the stretched state. During the opening process of the operating mechanism 100, the elastic component 125 pulls the first auxiliary component 130, thereby driving the rotating component 120 to move, so that the moving contact 220 moves away from the stationary contact 230 quickly. The setting of the first auxiliary component 130 avoids the burning of electric arc between the moving and stationary contacts, reduces contact loss, and helps to improve the service life of the circuit breaker 200.

[0036] As described above, the operating mechanism 100 includes a control component 110, a rotating component 120, and a first auxiliary component 130 disposed within the housing 210. The control component 110 and the first auxiliary component 130 are rotatably connected to the rotating component 120. The contact seat 121 of the rotating component 120 is fixedly connected to the moving contact 220 within the housing 210. The first auxiliary component 130 is located on the side of the contact seat 121 away from the stationary contact 230 within the housing 210. One end of the first auxiliary component 130 abuts against the contact seat 121, and the other end is fixedly connected to the elastic member 125. The control component 110 controls the rotating component 120 to rotate. The rotating component 120 drives the moving contact 220 to approach or move away from the stationary contact 230. The moving contact 220 contacts the stationary contact 230, and the elastic member 125 is in a stretched state. The aforementioned operating mechanism 100, by setting the first auxiliary component 130, continuously provides pressure to the moving contact 220 close to the stationary contact 230 when the circuit is closed. When the moving contact 220 is affected by the electric repulsion force and tends to move away from the stationary contact 230, the moving contact 220 is pressed against the stationary contact 230. During the opening process, the moving contact 220 is pulled to quickly increase the distance between it and the stationary contact 230, so that the electric arc between the moving and stationary contacts moves quickly towards the arc extinguishing chamber. This effectively reduces the burning of the electric arc between the moving and stationary contacts, reduces contact loss, and improves the service life of the circuit breaker 200.

[0037] Optionally, in one possible implementation of this embodiment of the invention, the elastic element 125 is a tension spring.

[0038] Please refer to Figure 5 and Figure 6 Optionally, in one possible embodiment of the present invention, the contact seat 121 is provided with a limiting groove 1211 on the side facing the first auxiliary member 130, and the first auxiliary member 130 is provided with opposing limiting shafts 131 on both sides. The first auxiliary member 130 extends into the limiting groove 1211, and the limiting shafts 131 overlap the upper surface of the limiting groove 1211. The upper surface of the limiting groove 1211 is divided into a straight portion 1211a and a recessed portion 1211b that are connected to each other. The limiting shafts 131 slide into the recessed portion 1211b, and the first auxiliary member 130 fixes the contact seat 121.

[0039] The contact seat 121 has a limiting groove 1211 on its side facing the first auxiliary member 130. Limiting shafts 131 are also provided on both sides of the first auxiliary member 130. The two limiting shafts 131 are coaxial and symmetrically arranged. After the end of the first auxiliary member 130 is inserted into the limiting groove 1211, the limiting shafts 131 overlap the upper surface of the limiting groove 1211 (i.e., the surface of the contact seat 121 where the limiting groove 1211 is located). The upper surface of the limiting groove 1211 is divided into a straight portion 1211a and a recessed portion 1211b connected to each other. The straight portion 1211a and the recessed portion 1211b are arranged in the same direction as the extension direction of the limiting groove 1211, with the straight portion 1211a located away from the moving contact 220 and the recessed portion 1211b located close to the moving contact 220. When the operating mechanism 100 is in the closed state, the moving contact 220 is subjected to an electric repulsive force ( Figure 6 When the contact seat 121 is affected by F1 and moves away from the stationary contact 230, the end of the contact seat 121 connected to the moving contact 220 will move away from the stationary contact 230. Figure 5 Rotating counterclockwise, at this time, the control component 110 will generate a thrust on the first auxiliary component 130. Figure 6 In the context of F2), the first auxiliary component 130, under the action of thrust F2, exerts a downward oblique pressure on the contact seat 121. Figure 6 In F3), at the same time, the limiting shaft 131 of the first auxiliary member 130 slides along the upper surface of the limiting groove 1211, slides from the straight part 1211a into the recessed part 1211b and is locked in the recessed part 1211b. A stable triangular structure is formed between the rotation connection point of the first auxiliary member 130, the rotation connection point of the contact seat 121 and the limiting shaft 131 of the first auxiliary member 130 to suppress the moving contact 220 from rising further.

[0040] Optionally, in one possible embodiment of the present invention, the rotating assembly 120 further includes a bracket 122 and a jump fastener 123 and a locking fastener 124 rotatably connected to the bracket 122. The jump fastener 123 and the locking fastener 124 are engaged with each other, and the jump fastener 123 and the locking fastener 124 are separated. The elastic member 125 pulls the first auxiliary member 130 to rotate the bracket 122, and the bracket 122 pushes the contact seat 121 to rotate to separate the moving contact 220 from the stationary contact 230.

[0041] The rotating assembly 120 also includes a bracket 122, a trip fastener 123, and a locking fastener 124. The bracket 122 is rotatably mounted inside the housing 210. The trip fastener 123 and the locking fastener 124 are mounted on the bracket 122 and rotatably connected to it. The trip fastener 123 and the locking fastener 124 are interlocked. When the circuit breaker 200 is closed and opened via the control assembly 110, the two components always move synchronously. Please refer to the reference. Figure 7The first auxiliary component 130 is rotatably connected to the bracket 122 at its middle part, and its opposite ends are connected to the contact seat 121 at one end and to the elastic component 125 at the other end. The control component 110 controls the rotation component 120 to rotate, so that when the moving contact 220 contacts the stationary contact 230, the elastic component 125 is in a stretched state. At this time, if a fault current occurs, the trip fastener 123 separates from the locking fastener 124, unlocking the rotation component 120. Under the pulling force of the elastic component 125, the first auxiliary component 130 moves away from the contact seat 121. The bracket 122 is rotatably connected to the first auxiliary component 130 and rotates under the drive of the first auxiliary component 130, thereby pushing the contact seat 121 away from the stationary contact 230. The moving contact 220 and the stationary contact 230 quickly separate, pushing the control component 110 in the opposite direction, causing the circuit breaker 200 to trip to achieve overcurrent protection.

[0042] Optionally, in one possible embodiment of the present invention, the elastic member 125 is located on the side of the bracket 122 away from the moving contact 220, and the end of the elastic member 125 is fixedly connected to the housing 210.

[0043] The elastic element 125 is located on the side of the bracket 122 away from the moving contact 220. One end of the elastic element 125 is connected to the fixed shaft 126 inside the housing 210, and the other end is connected to the first auxiliary element 130. After the rotating assembly 120 is unlocked, the elastic element 125 pulls the first auxiliary element 130 on the side of the first auxiliary element 130 away from the moving contact 220 to accelerate the separation of the moving and stationary contacts 230, so that the circuit breaker 200 can be tripped quickly.

[0044] Please refer to Figure 5 Optionally, in one possible embodiment of the present invention, the side of the bracket 122 is provided with a groove 1221, and the first auxiliary member 130 and the contact seat 121 are both disposed in the groove 1221.

[0045] The bracket 122 has a groove 1221 on its side. The first auxiliary member 130 and the contact seat 121 are both inserted into the groove 1221 and rotatably connected to the bracket 122. The groove 1221 is provided so that the first auxiliary member 130 and the contact seat 121 are vertically aligned to ensure that the end of the first auxiliary member 130 can abut against the contact seat 121. The rotatable connection point between the contact seat 121 and the bracket 122 is on the same straight line as the rotatable connection point between the bracket 122 and the housing 210, so as to facilitate the installation and fixation of the bracket 122 and the contact seat 121.

[0046] Optionally, in one possible embodiment of the present invention, the bracket 122 and the contact seat 121 abut against each other, the jump fastener 123 and the first auxiliary component 130 are coaxially arranged, and the locking fastener 124, the contact seat 121 and the bracket 122 are coaxially arranged.

[0047] While the bracket 122 is rotatably connected to the contact seat 121, the bottom of the bracket 122 also abuts against the edge of the contact seat 121. As the elastic member 125 pulls the first auxiliary member 130 to move, the bracket 122 rotates with the first auxiliary member 130. During this process, the bottom of the bracket 122 pushes the contact seat 121, causing the contact seat 121 to rotate with the bracket 122, thereby realizing the separation of the moving contact 220 and the stationary contact 230.

[0048] The jump fastener 123 is rotatably mounted on the surface of the bracket 122 and coaxially mounted with the first auxiliary component 130. The locking fastener 124, the contact seat 121 and the bracket 122 are coaxially mounted, which simplifies the structure of the rotating assembly 120, facilitates installation and saves space.

[0049] Optionally, in one possible embodiment of the present invention, the operating mechanism 100 further includes a trip unit, which includes a trip unit body 144 and a first horizontal bar 141, a vertical bar 142, and a second horizontal bar 143 connected in sequence. The first horizontal bar 141 and the second horizontal bar 143 are perpendicular to the vertical bar 142, and the first horizontal bar 141 and the second horizontal bar 143 are perpendicular to each other. The first horizontal bar 141 is connected to the trip unit body 144 and extends into or out of the trip unit body 144. The locking member 124 is located between the first horizontal bar 141, the second horizontal bar 143, and the trip unit body 144. The second horizontal bar 143 pulls the locking member 124 to rotate so that the locking member 124 is separated from the tripping member 123.

[0050] The operating mechanism 100 also includes a trip unit, which is used to disengage the tripping member 123 and the locking member 124, thereby unlocking the rotating assembly 120. Specifically, the trip unit includes a trip unit body 144 and a telescopic rod. The telescopic rod includes a first horizontal rod 141, a vertical rod 142, and a second horizontal rod 143 connected in sequence. The first horizontal rod 141 and the second horizontal rod 143 are located at both ends of the vertical rod 142 and are perpendicular to the vertical rod 142 respectively. At the same time, the first horizontal rod 141 and the second horizontal rod 143 are also perpendicular to each other. The first horizontal rod 141 is connected to the circuit breaker 200 body and extends into or out of the circuit breaker 200 body. The locking member 124 is located between the first horizontal rod 141, the second horizontal rod 143, and the trip unit body 144. The first horizontal rod 141 retracts into the trip unit body 144 to pull the locking member 124 to rotate and disengage from the tripping member 123.

[0051] Optionally, in one possible embodiment of the present invention, the control component 110 includes a button 111 slidably disposed on the housing 210, and a first link 112, a rotating member 113, and a second link 114 disposed inside the housing 210 and rotatably connected to the button 111 in sequence. The second link 114 is also rotatably connected to the rotating component 120.

[0052] The control component 110 includes a button 111, a first link 112, a rotating member 113, and a second link 114. The button 111 is interactively mounted on the housing 210, and the rotating member 113 is rotatably mounted inside the housing 210. The two ends of the first link 112 are rotatably connected to the button 111 and the rotating member 113, respectively. The two ends of the second link 114 are rotatably connected to the rotating member 113 and the rotating assembly 120, respectively. The button 111 has an operating end and a connecting end. The operating end is located outside the housing 210, and the connecting end is located inside the housing 210. The user presses or pulls the operating end to extend or retract the button 111 into or out of the housing 210. The button 111 sequentially drives the first link 112, the rotating member 113, and the second link 114, causing the rotating assembly 120 to rotate, thereby driving the circuit breaker 200 to close or open.

[0053] Please refer to Figure 2 , Figure 6 and Figure 8 Optionally, in one possible embodiment of the present invention, the operating mechanism 100 further includes a second auxiliary component 150 rotatably disposed within the housing 210. The second auxiliary component 150 is located between the button 111 and the contact seat 121. One end of the second auxiliary component 150 can abut against the contact seat 121 during the closing process to restrict the movement of the moving contact 220. The other end of the second auxiliary component 150 can rotate under the drive of the button 111 to separate from the contact seat 121.

[0054] The second auxiliary component 150 is rotatably disposed between the button 111 and the contact seat 121, with its first end facing the contact seat 121 and its second end facing the button 111. Figure 2 As shown, at this time, the operating mechanism 100 is in the open state, as... Figure 6 and Figure 8 As shown, the operating mechanism 100 is in the closed state at this time. During the process of the operating mechanism 100 changing from the open state to the closed state, the button 111 moves along direction A, causing the contact seat 121 to rotate through the first link 112, the rotating member 113, and the second link 114. During the rotation, the contact seat 121 gradually approaches the first end of the second auxiliary member 150 until it abuts against the first end. After that, the second auxiliary member 150 restricts the contact seat 121 from continuing to rotate, so that there is a certain gap between the moving and stationary contacts. The button 111 continues to move along direction A. After the button 111 abuts against the second end of the second auxiliary member 150, it pushes the second auxiliary member 150 to rotate. The first end of the second auxiliary member 150 is lifted and separates from the contact seat 121. Then, the moving contact 220 quickly contacts the stationary contact 230 under the pressure of the first auxiliary member 130, so that the moving and stationary contacts close quickly within a short distance, reducing the burning of the electric arc between the moving and stationary contacts and improving the service life of the circuit breaker 200. Please refer to Figure 6For example, the housing 210 has a boss 211 that contacts the bottom of the second auxiliary member 150. The boss 211 makes the second auxiliary member 150 rotate only counterclockwise and not clockwise. Therefore, after the contact seat 121 abuts against the first end of the second auxiliary member 150, the second auxiliary member 150 can restrict the movement of the contact seat 121, thereby maintaining a certain distance between the moving and stationary contacts.

[0055] This invention also discloses a circuit breaker 200, which includes a housing 210 and an operating mechanism 100 as described above disposed within the housing 210.

[0056] The circuit breaker 200 has the same structure and beneficial effects as the operating mechanism 100 in the foregoing embodiments. The structure and beneficial effects of the operating mechanism 100 have been described in detail in the foregoing embodiments and will not be repeated here.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An operating mechanism (100), characterized in that, The device includes a control component (110), a rotating component (120), and a first auxiliary component (130) disposed within a housing (210). The control component (110) and the first auxiliary component (130) are rotatably connected to the rotating component (120). The contact seat (121) of the rotating component (120) is fixedly connected to a moving contact (220) within the housing (210). The first auxiliary component (130) is located on the contact seat (121) away from the housing (210). On one side of the stationary contact (230), one end of the first auxiliary member (130) abuts against the contact seat (121), and the other end is fixedly connected to the elastic member (125). The control component (110) controls the rotation component (120) to rotate. The rotation component (120) drives the moving contact (220) to approach or move away from the stationary contact (230). The moving contact (220) contacts the stationary contact (230), and the elastic member (125) is in a stretched state. The contact seat (121) has a limiting groove (1211) on the side facing the first auxiliary member (130). The first auxiliary member (130) has opposing limiting shafts (131) on both sides. The first auxiliary member (130) extends into the limiting groove (1211). The limiting shaft (131) overlaps the upper surface of the limiting groove (1211). The upper surface of the limiting groove (1211) is divided into a straight part (1211a) and a recessed part (1211b) that are connected to each other. The limiting shaft (131) slides into the recessed part (1211b). The first auxiliary member (130) fixes the contact seat (121).

2. The operating mechanism (100) according to claim 1, characterized in that, The rotating assembly (120) further includes a bracket (122) and a jump fastener (123) and a locking fastener (124) rotatably connected to the bracket (122). The jump fastener (123) and the locking fastener (124) are engaged with each other, and the jump fastener (123) and the locking fastener (124) are separated. The elastic element (125) pulls the first auxiliary element (130) to rotate the bracket (122), and the bracket (122) pushes the contact seat (121) to rotate to separate the moving contact (220) from the stationary contact (230).

3. The operating mechanism (100) according to claim 2, characterized in that, The bracket (122) and the contact seat (121) abut against each other, the jump fastener (123) and the first auxiliary component (130) are coaxially arranged, and the locking fastener (124), the contact seat (121) and the bracket (122) are coaxially arranged.

4. The operating mechanism (100) according to claim 2, characterized in that, It also includes a trip unit, which includes a trip unit body (144) and a first horizontal bar (141), a vertical bar (142), and a second horizontal bar (143) connected in sequence. The first horizontal bar (141) and the second horizontal bar (143) are perpendicular to the vertical bar (142) respectively, and the first horizontal bar (141) and the second horizontal bar (143) are perpendicular to each other. The first horizontal bar (141) is connected to the trip unit body (144) and extends into or out of the trip unit body (144). The locking member (124) is located between the first horizontal bar (141), the second horizontal bar (143), and the trip unit body (144). The second horizontal bar (143) pulls the locking member (124) to rotate so that the locking member (124) is separated from the tripping member (123).

5. The operating mechanism (100) according to claim 1, characterized in that, The control component (110) includes a button (111) slidably disposed on the housing (210), and a first link (112), a rotating component (113), and a second link (114) disposed in the housing (210) and rotatably connected to the button (111) in sequence. The second link (114) is also rotatably connected to the rotating component (120).

6. The operating mechanism (100) according to claim 2, characterized in that, The side of the bracket (122) is provided with a groove (1221), and the first auxiliary component (130) and the contact seat (121) are both disposed in the groove (1221).

7. The operating mechanism (100) according to claim 2, characterized in that, The elastic element (125) is located on the side of the bracket (122) away from the moving contact (220), and the end of the elastic element (125) is fixedly connected to the housing (210).

8. The operating mechanism (100) according to claim 5, characterized in that, It also includes a second auxiliary component (150) rotatably disposed within the housing (210). The second auxiliary component (150) is located between the button (111) and the contact seat (121). One end of the second auxiliary component (150) can abut against the contact seat (121) during the closing process to restrict the movement of the moving contact (220). The other end of the second auxiliary component (150) can rotate under the drive of the button (111) to separate from the contact seat (121).

9. A circuit breaker (200), characterized in that, It includes a housing (210) and an operating mechanism (100) as described in any one of claims 1 to 8 disposed within the housing (210).

Images