Closing and opening operating mechanism and circuit breaker

Abstract

The application discloses a kind of closing and opening operation mechanism and circuit breaker, the closing and opening operation mechanism of application in circuit breaker, including transmission connecting piece, switch component and electric component, the transmission connecting piece rotation is installed in the shell of circuit breaker;The switch component includes handle part and connecting shaft sleeve connected into an organic whole, the connecting shaft sleeve is coaxially connected with transmission connecting piece, the connecting shaft sleeve has the first end face with the transmission connecting piece, the transmission connecting piece has the second end face with the first end face;One of the first end face and the second end face is provided with the first arc slot extending along the rotation direction of transmission connecting piece, and the other is provided with the first limit protrusion engaged with the first arc slot;The electric component is drivingly connected with transmission connecting piece, to drive switch component to be switched between closing position and opening position.It is used to solve the problem that circuit breaker cannot be reliably closed and opened manually in the case of electric control failure.

Description

Technical Field

[0001] This invention relates to the field of circuit breaker technology, specifically to a closing and opening operating mechanism and a circuit breaker. Background Technology

[0002] Circuit breakers are used to connect, carry, and disconnect current under normal or abnormal circuit conditions to protect power lines and motors. In actual use, sudden power outages or malfunctions of electric components such as drive motors are inevitable, causing these components to stop working or malfunction. As a result, the circuit breaker handle remains in the closed or open position and cannot be reliably closed or opened manually, posing a safety hazard and causing confusion for later maintenance. Summary of the Invention

[0003] One of the main objectives of this invention is to provide a closing and opening operation mechanism to solve the problem that circuit breakers cannot be reliably closed and opened manually when power is lost or the electric components fail.

[0004] To achieve the above objectives, the present invention provides a closing and opening operating mechanism for a circuit breaker, comprising:

[0005] Transmission connector, used for rotatable installation within the circuit breaker housing;

[0006] A switch assembly includes a handle portion and a connecting bushing integrally connected together. The connecting bushing is coaxially connected to a transmission connector. The connecting bushing has a first end face facing the transmission connector, and the transmission connector has a second end face facing the first end face. One of the first end face and the second end face is provided with a first arc-shaped groove extending along the rotation direction of the transmission connector, and the other is provided with a first limiting protrusion engaging with the first arc-shaped groove.

[0007] An electric component is connected to the transmission connector and is used to drive the switch assembly to switch movably between the closed and open positions of the circuit breaker via the transmission connector.

[0008] In one embodiment, the first arc-shaped groove ring is disposed on the connecting bushing, and the first limiting protrusion is disposed on the transmission connector.

[0009] In one embodiment, the first end face of the connecting bushing is provided with two second limiting protrusions spaced apart, and the first arc-shaped groove is formed between the two second limiting protrusions.

[0010] In one embodiment, the closing and opening operating mechanism further includes a plug-in structure and a position switch. The plug-in structure is plugged into the switch assembly. The plug-in structure has a first stop corresponding to the closing position and a second stop corresponding to the opening position. The first stop and the second stop are spaced apart. The position switch is installed between the first stop and the second stop. The position switch is used to output a closing detection signal when the first stop is touched and to output an opening detection signal when the second stop is touched.

[0011] In one embodiment, the first arc-shaped groove has a first central angle, and a second arc-shaped groove with a second central angle is formed between the first stop and the second stop. The central axis of the second arc-shaped groove and the central axis of the first arc-shaped groove are on the same straight line, and the first central angle is not less than the second central angle.

[0012] In one embodiment, the closing and opening operation mechanism further includes a reset spring, the first end of which abuts against the plug-in structure, and the second end of which abuts against the transmission connector, for driving the plug-in structure to rotate after the first stop and the second stop touch the position switch.

[0013] In one embodiment, the transmission connector includes a connecting shaft, a connecting seat, and connecting teeth. The connecting shaft passes through the connecting seat and is on the same straight line as the central axis of the connecting shaft sleeve and the central axis of the plug-in structure. The connecting seat has connecting teeth on the side opposite to the switch assembly. The connecting teeth are drively connected to the electric assembly. The connecting teeth are arranged along at least 1 / 4 of the circumference of the connecting seat. A limiting groove is provided between the connecting teeth and the connecting shaft. The reset spring is housed between the limiting groove and the plug-in structure.

[0014] In one embodiment, the plug-in structure includes a mounting platform and a snap-fit ​​member disposed on the top of the mounting platform. The mounting platform is plugged into the connector via the connecting shaft, and the handle portion is provided with a slot that is nested and adapted to the snap-fit ​​member.

[0015] The second main objective of this invention is to provide a circuit breaker that solves the problem that the circuit breaker cannot be reliably closed or opened manually in the event of a power outage or a failure of the electric components.

[0016] To achieve the above objectives, the present invention provides a circuit breaker, including a housing and a closing / opening operating mechanism as described in one of the objectives of the present invention, wherein the closing / opening operating mechanism is installed inside the housing, and the transmission connecting member is rotatably connected to the housing.

[0017] In one embodiment, the circuit breaker has a mounting position, and a shaft seat adapted to be connected to the rotating connector is provided in the middle of the mounting position. Corresponding to the mounting position, a guide groove is provided on the top of the circuit breaker. The guide groove extends from the closed position to the open position, and the handle of the switch assembly is externally disposed on the top of the circuit breaker via the guide groove.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The circuit breaker is equipped with an electric component, a transmission connector, and a switch assembly. The transmission connector is rotatably installed inside the circuit breaker housing. The electric component is connected to the transmission connector to drive the switch assembly, which simplifies the structure and facilitates assembly.

[0020] 2. The connecting bushing is coaxially connected to the transmission connector. The first end face of the connecting bushing faces the second end face of the transmission connector. A first limiting protrusion is provided on one of the first end face and the second end face, and a first arc-shaped groove is provided on the other. In the electric state, the electric component transmits the force of motion to the switch component through the transmission connector. Through the meshing transmission of the first arc-shaped groove and the first limiting protrusion, the switch component is driven to rotate, and further driven to switch between the closed position and the open / closed position to realize the closing and opening. In the manual state, the switch component is manually pushed to realize the closing and opening. Through the meshing transmission of the first arc-shaped groove and the first limiting protrusion, the transmission connector is driven to rotate, avoiding reset. This prevents the inability to reliably close or open the circuit breaker when the electric component stops working or malfunctions, thus preventing the closing or opening from being incomplete. It also avoids the situation where the handle of the circuit breaker is always in the closed or open position in the electric fault state, and further avoids confusion in later maintenance due to unclear closing and opening status, effectively optimizing safety performance and closing and opening stability.

[0021] 3. The switching assembly can be closed and opened by applying external force to it. When no external force is applied to the switching assembly of the circuit breaker, the transmission connector can be driven by an electric component to move the switching assembly between the closed and open positions of the circuit breaker, thereby achieving closing and opening. The closing and opening can be achieved by electrically controlling the switching assembly or by manually applying external force to the switching assembly. This avoids the problem that the switching assembly cannot be reliably closed and opened manually when the electric component stops working, effectively optimizing safety and stability and avoiding potential safety hazards. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a partial structural schematic diagram of an embodiment of the circuit breaker of the present invention;

[0024] Figure 2 for Figure 1 Exploded view;

[0025] In the diagram: 101, drive motor; 102, gear set; 200, transmission connector; 201, first limiting protrusion; 202, connecting shaft; 203, connecting seat; 2031, second end face; 204, connecting teeth; 205, limiting groove; 300, switch assembly; 301, connecting bushing; 3011, first end face; 3012, first arc groove; 3013, second limiting protrusion; 302, handle part; 3021, slot; 400, plug-in structure; 401, mounting platform; 402, snap-fit ​​component; 403, first stop; 404, second stop; 405, second arc groove; 501, position switch; 502, return spring; 600, circuit breaker; 601, housing; 602, mounting position; 603, shaft seat; 604, guide groove.

[0026] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that if all directional indications in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a specific posture, the directional indications will also change accordingly if the specific posture changes.

[0029] In this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and should not be construed as indicating or implying their relative importance, or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. If the description in this invention refers to "A and / or B," it indicates that solution A or solution B is included, or that solutions A and B are included. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0030] This invention provides a closing and opening operation mechanism and a circuit breaker 600.

[0031] Reference Figures 1 to 2 The aforementioned closing and opening operating mechanism, applied to a circuit breaker 600, includes an electric component, a transmission connector 200, and a switching component 300. Wherein:

[0032] The transmission connector 200 is used to be rotatably installed inside the housing 601 of the circuit breaker 600. It can be understood that, in order to avoid affecting the rotation of the transmission connector 200, a connecting structure such as a bearing seat or bushing can be provided inside the housing 601 of the circuit breaker 600, corresponding to the position of the transmission connector 200, so that the rotatable connector 200 can be rotatably installed inside the housing of the circuit breaker 600.

[0033] The switch assembly 300 includes a handle portion 302 and a connecting bushing 301 connected as one unit. The connecting bushing 301 is coaxially connected to the transmission connector 200. The connecting bushing 301 has a first end face 3011 facing the transmission connector 200, and the transmission connector 200 has a second end face 2031 facing the first end face 3011. One of the first end face 3011 and the second end face 2031 is provided with a first arc-shaped groove 3012 extending along the rotation direction of the transmission connector 200, and the other is provided with a first limiting protrusion 201 that engages with the first arc-shaped groove 3012.

[0034] The electric component is connected to the transmission connector 200 for driving the switch assembly 300 to switch movably between the closed and open positions of the circuit breaker 600 via the transmission connector 200.

[0035] The circuit breaker 600 is equipped with an electric component, a transmission connector 200, and a switch assembly 300. The transmission connector 200 is rotatably mounted inside the housing 601 of the circuit breaker 600. The electric component is connected to the transmission connector 200 so as to drive the switch assembly 300 to operate through the transmission connector 200, which simplifies the structure and facilitates assembly.

[0036] Optionally, the electric assembly includes a drive motor 101 and a gear set 102. Both the drive motor 101 and the gear set 102 are installed within the housing 601 of the circuit breaker 600. The drive motor 101 is drive-connected to the gear set 102, and the gear set 102 is drive-connected to the transmission connector 200 to drive the transmission connector 200 to rotate. In the electric state, when the drive motor 101 is started, it drives the transmission connector 200 to rotate via the gear set 102, thereby driving the switch assembly 300 to rotate. As an example, a transmission connection structure such as connecting teeth 204 can be provided on the transmission connector 200 to match the closed and open positions. The gear set 102 can consist of one or more drive gears that are drive-connected to each other. The connecting teeth 204 mesh with the drive gear closest to the transmission connector 200.

[0037] It is understood that the switch assembly 300 includes a connecting bushing 301 and a handle portion 302 connected as one unit. The closing and opening operating mechanism is applied to the circuit breaker 600. The transmission connector 200 is rotatably installed inside the housing 601 of the circuit breaker 600. Optionally, the transmission connector 200 can be configured in the mounting position 602 corresponding to the top of the housing 601 of the circuit breaker 600. The connecting bushing 301 is coaxially connected to the transmission connector 200. The switch assembly 300 is located at the mounting position 602 corresponding to the position of the transmission connector 200. The handle portion 302 can be partially or completely extended outside the circuit breaker 600 through the mounting position 602 to realize manual control of closing and opening. The rotation direction or position of the handle portion 302 externally installed on the circuit breaker is used as an indicator to display the closing and opening status of the circuit breaker 600.

[0038] The connecting bushing 301 has a first end face 3011 facing the transmission connector 200, and the transmission connector 200 has a second end face 2031 facing the first end face 3011. It can be understood that the first end face 3011 and the second end face 2031 are defined by the end faces of the connecting bushing 301 and the transmission connector 200 facing each other, respectively. A first limiting protrusion 201 is provided on one of the first end face 3011 and the second end face 2031, and a first arc-shaped groove 3012 is provided on the other. The connecting bushing 301 and the transmission connector 200 are coaxially connected, and the first limiting protrusion 201 and the first arc-shaped groove 3012 engage for transmission.

[0039] In the electric state, the electric component transmits the force of motion to the switch assembly 300 through the transmission connector 200. The first arc-shaped groove 3012 and the first limiting protrusion 201 engage to drive the switch assembly 300 to rotate, further switching it between the closed and open / closed positions to achieve closing and opening. In the manual state, the switch assembly 300 is manually pushed to achieve closing and opening. The first arc-shaped groove 3012 and the first limiting protrusion 201 engage to drive the transmission connector 200 to rotate, preventing reset and preventing incomplete closing or opening due to the inability to reliably close or open manually when the electric component stops working or malfunctions. It also prevents the circuit breaker handle from remaining in the closed or open position during electric fault conditions, further avoiding confusion during later maintenance due to unclear closing / opening status. This effectively optimizes safety performance and closing / opening stability, preventing potential safety hazards.

[0040] One of the first end face 3011 and the second end face 2031 is provided with a first arc-shaped groove 3012 extending along the rotation direction of the transmission connector 200, and the other is provided with a first limiting protrusion 201 that engages with the first arc-shaped groove 3012. It can be understood that the first arc-shaped groove 3012 extends along the rotation direction of the transmission connector 200; that is, the first arc-shaped groove 3012 is disposed on the first end face 3011 or the second end face 2031 corresponding to the rotation direction of the transmission connector 200, and the curvature of the first arc-shaped groove 3012 is adapted to the rotation direction of the transmission connector 200. The specific implementation process is as follows:

[0041] As an example, a first arc-shaped groove 3012 can be provided on the first end face 3011 of the connecting bushing 301, and a first limiting protrusion 201 can be provided on the second end face 2031 of the transmission connector 200. The first limiting protrusion 201 engages with the first arc-shaped groove 3012. To achieve reliable opening and closing manually, and to allow the switch assembly 300 itself to move independently of the electric component, thus preventing the moving parts of the circuit breaker from being locked in an inappropriate position due to jamming of the electric component, optionally, the first arc-shaped groove 3012 has a first limiting end and a second limiting end. The length of the first limiting protrusion 201 is not greater than the arc length of the first arc-shaped groove 3012. That is, the first limiting protrusion 201 engages with the first arc-shaped groove 3012, but a gap can be left between the first limiting protrusion 201 and the first arc-shaped groove 3012 (or the two ends of the first limiting protrusion may not directly contact the first limiting end and the second limiting end of the first arc-shaped groove 3012). When the circuit is closed, the first limiting protrusion is precisely engaged with the first limiting end of the first arc-shaped groove 3012, either by activating the electric component or manually pushing the switch component. Alternatively, when closing the circuit, the first limiting protrusion 201 abuts against the first limiting end of the first arc-shaped groove 3012, and the two components cooperate by pressing and rotating against each other to achieve closing. When opening the circuit, the first limiting protrusion is precisely engaged with the second limiting end of the first arc-shaped groove 3012. Alternatively, when opening the circuit, the first limiting protrusion 201 abuts against the second limiting end of the first arc-shaped groove 3012, and the two components cooperate by pressing and rotating against each other to achieve opening.

[0042] As another example, a first arcuate groove 3012 can be provided on the second end face 2031 of the transmission connector 200, and a first limiting protrusion 201 can be provided on the first end face 3011 of the connecting bushing 301, with the first limiting protrusion 201 engaging with the first arcuate groove 3012. The specific implementation is as shown in the example above and will not be repeated here.

[0043] Based on the above example, depending on actual use, it is possible to provide one or more first arc-shaped grooves 3012 and correspondingly provide one or more first limiting protrusions 201. When there are multiple first arc-shaped grooves 3012, optionally, multiple first arc-shaped grooves 3012 are spaced apart and arranged around the periphery of the switch assembly 300. When closing and opening switching is possible, multiple first limiting protrusions 201 can be placed at any position of the transmission connector 200 corresponding to the position of the first arc-shaped grooves 3012; and vice versa. In the assembled state, multiple first limiting protrusions 201 are inserted one-to-one into the corresponding multiple first arc-shaped grooves 3012, and the first limiting protrusions 201 and the first arc-shaped grooves 3012 mesh with each other to allow the switch assembly 300 to move between the closed position and the open position of the circuit breaker 600.

[0044] In one embodiment, to facilitate switching between closing and opening the circuit breaker, the first arc-shaped groove 3012 is provided around the connecting bushing 301, and the first limiting protrusion 201 is provided on the transmission connector 200.

[0045] Optionally, the closing and opening positions can be defined by the first arc-shaped groove 3012. When closing, the first limiting protrusion is exactly in contact with the first limiting end of the first arc-shaped groove 3012; or, when closing is required, the first limiting protrusion 201 abuts against the first limiting end of the first arc-shaped groove 3012, and the two cooperate by mutual squeezing and rotation to achieve closing. When opening, the first limiting protrusion is exactly in contact with the second limiting end of the first arc-shaped groove 3012; or, when opening is required, the first limiting protrusion 201 abuts against the second limiting end of the first arc-shaped groove 3012, and the two cooperate by mutual squeezing and rotation to achieve opening.

[0046] It should be noted that in this invention, the circuit breaker can be closed and opened electrically or manually. External force is applied to the switching assembly manually to drive it to close and open. When no external force is applied to the circuit breaker's switching assembly, the transmission connector can be driven by an electric component to move the switching assembly between the closed and open positions of the circuit breaker, thereby achieving closing and opening. This avoids the problem of unreliable closing and opening when the electric component stops working, effectively optimizing safety and stability and preventing safety hazards.

[0047] It is understood that the first limiting protrusion 201 can be positioned at any position on the periphery of the transmission connector 200 or on any position on the second end face 2031, corresponding to the position of the first arc groove 3012.

[0048] In this application, as an example, there is one first arc-shaped groove 3012, which is arranged around the first end face 3011 of the connecting bushing 301, and one first limiting protrusion 201 is provided accordingly. In the assembly case, the first limiting protrusion 201 engages with the first arc-shaped groove 3012.

[0049] Optionally, the first arc-shaped groove 3012 may be recessed into the first end face 3011 of the connecting bushing 301; alternatively, a connecting structure may be attached to the first end face 3011 of the connecting bushing 301, and the first arc-shaped groove 3012 may be formed in the connecting structure; of course, two or more protrusions, stops, or other limiting structures may be provided on the connecting bushing 301, so that the first arc-shaped groove 3012 is formed between any two adjacent limiting structures.

[0050] In one embodiment, for ease of processing, the first end face 3011 of the connecting bushing 301 is provided with two second limiting protrusions 3013 spaced apart, and the first arc-shaped groove 3012 is formed between the two second limiting protrusions 3013.

[0051] The two second limiting protrusions 3013 are spaced apart on the first end face 3011 of the connecting bushing 301. It can be understood that, corresponding to the rotation direction of the transmission connector 200, the two second limiting protrusions 3013 can be spaced apart on the periphery of the first end face 3011. As an example, the two second limiting protrusions 3013 can be disposed opposite each other on both sides of the connecting bushing 301 to form two arc-shaped grooves on the first end face 3011 of the connecting bushing 301. Optionally, the two second limiting protrusions can be the same or different, and two identical or different arc-shaped grooves can be formed between the two second limiting protrusions. In accordance with the structure of the switch assembly 300, without restricting the switching between closing and opening, one or both of the two arc-shaped grooves can be defined as the first arc-shaped groove 3012. When both arc-shaped grooves can be used as the first arc-shaped groove 3012, in accordance with the rotation direction of the transmission connector 200, the first limiting protrusion 201 engages with one of the first arc-shaped grooves 3012. Of course, two first limiting protrusions 201 can also be provided on the second end face 2031, and the two first limiting protrusions 201 engage with the corresponding two first arc-shaped grooves 3012 one-to-one.

[0052] In one embodiment, the closing and opening operation mechanism further includes a plug-in structure 400 and a position switch 501. The plug-in structure 400 is plugged into the switch assembly 300. The plug-in structure 400 is provided with a first stop 403 corresponding to the closing position and a second stop 404 corresponding to the opening position. The first stop 403 and the second stop 404 are spaced apart. The position switch 501 is installed between the first stop 403 and the second stop 404. The position switch 501 is used to output a closing detection signal when the first stop 403 is touched and to output an opening detection signal when the second stop 404 is touched.

[0053] A plug-in structure 400 is provided, which is plugged into the switch assembly 300 to rotate with the switch assembly 300. Optionally, the plug-in structure can be plugged into the connecting sleeve 301 or the handle part 302 of the switch assembly 300. A position switch 501 is provided to detect the closing and opening status of the closing and opening operation mechanism for prompting purposes.

[0054] Furthermore, indicator modules such as indicator lights can be installed in the circuit breaker 600. The circuit breaker 600 is equipped with a control module. The position switch 501 and the indicator module are respectively connected to the control module. When the position switch 501 touches the first stop 403, it outputs a closing detection signal. The control module controls the indicator module to display the corresponding color or information according to the received closing detection signal as a closing reminder. When the position switch 501 touches the second stop 404, it outputs a opening detection signal. The control module controls the indicator module to display the corresponding color or information according to the received opening detection signal as an opening reminder.

[0055] Optionally, depending on the actual use, the position switch 501 can be a roller-type limit switch. When the first stop 403 and the second stop 404 touch the position switch 501, the position switch 501 will be deflected. The position switch 501 can be a limit switch that can be automatically reset or requires external force to reset. Taking the position switch 501 being touched by the first stop 403 as an example, depending on the type of position switch 501 used, if the position switch 501 is a single-wheel limit switch, it will automatically reset after being touched and deflected by the first stop 403; if the position switch 501 is a double-wheel limit switch, after being touched and deflected by the first stop 403, it needs to be deflected from the other direction by the second stop 404 to reset.

[0056] In one embodiment, the first arc-shaped groove 3012 has a first central angle, and a second arc-shaped groove 405 with a second central angle is formed between the first stop 403 and the second stop 404. The central axis of the second arc-shaped groove 405 is on the same straight line as the central axis of the first arc-shaped groove 3012, and the first central angle is not less than the second central angle.

[0057] A second arc-shaped groove 405 with a second central angle is formed between the first stop 403 and the second stop 404. The first stop 403 and the second stop 404 of the plug-in structure 400 are spaced apart. The position switch 501 is located between the first stop 403 and the second stop 404. The first central angle is not less than the second central angle. Limited by the first stop 403, the second stop 404 and the position switch 501, the range of rotation of the plug-in structure 400 is not greater than the range of rotation of the connecting sleeve 301 of the switch assembly 300. The rotation of the switch assembly 300 drives the rotation of the plug-in structure 400, which in turn drives the movement of the first stop 403 and the second stop 404. After the first stop 403 (or the second stop 404) touches the position switch 501, it outputs a closing detection signal (or a opening detection signal). This avoids the situation where the switch assembly 300 rotates to the closing position (or the opening position) but fails to trigger the position switch 501 to output a closing detection signal (or an opening detection signal), thereby achieving normal closing and opening, and optimizing the stability and accuracy of closing and opening detection.

[0058] In one embodiment, the closing and opening operation mechanism further includes a reset spring 502, the first end of which abuts against the plug-in structure 400, and the second end of which abuts against the transmission connector 200, for driving the plug-in structure 400 to rotate after the first stop 403 and the second stop 404 touch the position switch 501.

[0059] By setting a return spring 502 between the plug-in structure 400 and the transmission connector 200, the elastic deformation of the return spring 502 drives the plug-in structure 400 to rotate. Specifically, the transmission connector 200 is rotated by an electric component or by manually pushing the switch component 300. As the transmission connector 200 rotates, the return spring 502 is gradually compressed or stretched. The central angle of the first arc-shaped groove 3012 is not less than the second central angle of the second arc-shaped groove 405, so that after the first stop 403 touches the position switch 501 or the second stop 404 touches the position switch 501, it will still rotate to a certain extent under the drive of the switch assembly 300 until the drive motor 101 stops rotating or the manual push of the switch assembly 300 stops. The reset spring 502 generates a reset rotation force. As the reset spring 502 gradually returns to its original state, it will drive the plug-in assembly to rotate. The plug-in assembly is plugged into the switch assembly 300. During the rotation of the plug-in assembly, it will drive the transmission connector 200 to rotate. This avoids problems such as the circuit breaker 600 not closing or opening properly and poor stability due to insufficient gear rotation or wear and tear of the electric components and transmission connectors due to long-term use during actual operation.

[0060] In one embodiment, the transmission connector 200 includes a connecting shaft 202, a connecting seat 203, and connecting teeth 204. The connecting shaft 202 passes through the connecting seat 203 and is on the same straight line as the central axis of the connecting shaft sleeve 301 and the central axis of the plug-in structure 400. The connecting teeth 204 are provided on the side of the connecting seat 203 away from the switch assembly 300. The connecting teeth 204 are connected to the electric assembly in a transmission manner. The connecting teeth 204 are provided along at least 1 / 4 of the circumference of the connecting seat 203. A limiting groove 205 is provided between the connecting teeth 204 and the connecting shaft 202. The return spring 502 is housed between the limiting groove 205 and the plug-in structure 400.

[0061] It is understood that the second end face 2031 is formed at one end of the connecting seat 203 near the connecting bushing 301. Optionally, the connecting teeth 204 are provided on the side of the connecting seat 203 opposite to the connecting bushing 301. The first arc-shaped groove 3012 is provided corresponding to the rotation direction of the transmission connector 200, and the connecting teeth 204 are provided corresponding to the first arc-shaped groove 3012, such that the connecting teeth 204 are provided along at least 1 / 4 of the circumference of the connecting seat 203. The limiting groove 205 is formed on the end face of the connecting seat 203 opposite to the connecting bushing 301, and the return spring 502 is placed between the limiting groove 205 and the plug-in structure 400 to prevent the return spring 502 from shifting position during elastic deformation, which would affect the actual closing and opening effect.

[0062] In one embodiment, to simplify the structure, the plug-in structure 400 includes a mounting platform 401 and a snap-fit ​​member 402 disposed on the top of the mounting platform 401. The mounting platform 401 is plugged into the connecting seat 203 via the connecting shaft 202. The handle portion 302 is provided with a slot 3021 that is nested and adapted to the snap-fit ​​member 402.

[0063] The plug-in structure 400 is plugged into the handle portion 302 of the switch assembly 300 via the snap-fit ​​member 402. The handle portion of the switch assembly 300 drives the plug-in structure 400 to rotate, which in turn drives the first stop member 403 and the second stop member 404 of the plug-in structure 400 to rotate. The first stop member 403 touches the position switch 501 to output a closing detection signal and the second stop member 404 touches the position switch 501 to output a opening detection signal, thereby improving the sensitivity of detecting the closing and opening status.

[0064] The present invention also provides a circuit breaker 600, which includes a housing 601 and a closing and opening operating mechanism as described in the above example. The closing and opening operating mechanism is installed inside the housing 601, and the transmission connecting member 200 is rotatably connected to the housing 601.

[0065] The transmission connector 200 of the closing / opening operating mechanism is installed inside the housing 601 and rotatably connected to the housing 601. The closing / opening is achieved by electrically controlling the transmission connector 200 or manually controlling the switch assembly 300. The specific implementation of the closing / opening operating mechanism is as shown above and will not be repeated here.

[0066] In one embodiment, the circuit breaker 600 has a mounting position 602, and a bearing 603 adapted to be connected to the rotating connector is provided in the middle of the mounting position 602. Corresponding to the mounting position 602, a guide groove 604 is provided on the top of the circuit breaker 600. The guide groove 604 extends from the closed position to the open position. The handle portion 302 of the switch assembly 300 is externally disposed on the top of the circuit breaker 600 via the guide groove 604.

[0067] Specifically, the connecting sleeve 301 of the switch assembly 300 is mounted on the bearing seat 603 via the mounting position 602. The connecting shaft 202 of the transmission connector 200 passes through the connecting sleeve 301 and is rotatably connected to the bearing seat 603. The guide groove 604 limits the position of the switch assembly 300 to prevent positional displacement during use, which would affect actual operation. Optionally, a stop can be provided on the housing 601 at the position corresponding to the guide groove 604 to limit the handle portion 302 of the switch assembly 300 and cover the internal structure of the circuit breaker 600, thereby protecting the internal structure of the circuit breaker 600 and making the overall appearance more aesthetically pleasing.

[0068] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A closing and opening operating mechanism, applied to a circuit breaker, characterized in that, include: Transmission connector, used for rotatable installation within the circuit breaker housing; A switch assembly includes a handle portion and a connecting bushing integrally connected together. The connecting bushing is coaxially connected to a transmission connector. The connecting bushing has a first end face facing the transmission connector, and the transmission connector has a second end face facing the first end face. One of the first end face and the second end face is provided with a first arc-shaped groove extending along the rotation direction of the transmission connector, and the other is provided with a first limiting protrusion engaging with the first arc-shaped groove. An electric component, which is connected to the transmission connector, is used to drive the switch assembly to switch movably between the closed and open positions of the circuit breaker via the transmission connector; The closing and opening operation mechanism further includes a plug-in structure and a position switch. The plug-in structure is plugged into the switch assembly. The plug-in structure is provided with a first stop corresponding to the closing position and a second stop corresponding to the opening position. The first stop and the second stop are spaced apart. The position switch is installed between the first stop and the second stop. The position switch is used to output a closing detection signal when the first stop is touched and to output an opening detection signal when the second stop is touched. The first arc-shaped groove has a first central angle, and a second arc-shaped groove with a second central angle is formed between the first stop and the second stop. The central axis of the second arc-shaped groove and the central axis of the first arc-shaped groove are on the same straight line, and the first central angle is not less than the second central angle. The closing and opening operation mechanism also includes a reset spring. The first end of the reset spring abuts against the plug-in structure, and the second end of the reset spring abuts against the transmission connector. It is used to drive the plug-in structure to rotate after the first stop and the second stop touch the position switch.

2. The closing and opening operating mechanism according to claim 1, characterized in that, The first arc-shaped groove ring is provided on the connecting shaft sleeve, and the first limiting protrusion is provided on the transmission connector.

3. The closing and opening operating mechanism according to claim 2, characterized in that, The first end face of the connecting bushing is provided with two second limiting protrusions spaced apart, and the first arc-shaped groove is formed between the two second limiting protrusions.

4. The closing and opening operating mechanism according to claim 1, characterized in that, The transmission connector includes a connecting shaft, a connecting seat, and connecting teeth. The connecting shaft passes through the connecting seat and is on the same straight line as the central axis of the connecting shaft sleeve and the central axis of the plug-in structure. The connecting seat has connecting teeth on the side opposite to the switch assembly. The connecting teeth are connected to the electric assembly. The connecting teeth are arranged along at least 1 / 4 of the circumference of the connecting seat. A limiting groove is provided between the connecting teeth and the connecting shaft. The reset spring is housed between the limiting groove and the plug-in structure.

5. The closing and opening operating mechanism according to claim 4, characterized in that, The plug-in structure includes a mounting platform and a snap-fit ​​component disposed on the top of the mounting platform. The mounting platform is plugged into the connecting seat via the connecting shaft. The handle portion is provided with a slot that is nested and adapted to the snap-fit ​​component.

6. A circuit breaker, characterized in that, The device includes a housing and a closing / opening operating mechanism as described in any one of claims 1-5, wherein the closing / opening operating mechanism is installed inside the housing, and the transmission connecting member is rotatably connected to the housing.

7. The circuit breaker according to claim 6, characterized in that, The circuit breaker has a mounting position, and a shaft seat adapted to connect with the transmission connector is provided in the middle of the mounting position. Corresponding to the mounting position, a guide groove is provided on the top of the circuit breaker. The guide groove extends from the closed position to the open position. The handle of the switch assembly is externally disposed on the top of the circuit breaker via the guide groove.

Images