Operation trip mechanism and electric switch having the same

Abstract

The operating tripping mechanism and the electric switch having the same provided by the present invention belong to the technical field of electrical components, wherein the operating tripping mechanism comprises: a shell, the shell is suitable for being installed as a whole on the base of the electric switch, an operating handle is provided on the shell, a driving member is movably provided in the shell, the driving member and the operating handle are connected by a first elastic member, the first elastic member has an elastic force that causes the driving member to move following the operating handle; a first limit assembly and a second limit assembly are provided in the shell, the first limit assembly and the second limit assembly are respectively movably connected to lock the driving member in the shell; the operating tripping mechanism of the present invention integrates the operating handle and the jump structure in a separate shell, and the shell can be installed as a whole on the base of the electric switch, so that when assembling the electric switch, the operating tripping mechanism only needs to be installed as a whole on the electric switch using fasteners, thereby simplifying the assembly process of the electric switch.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical components, and in particular to an operating tripping mechanism and an electric switch having the same. Background Art

[0002] Circuit breakers are used to disconnect circuits. During the process of disconnecting a DC circuit, the arc is not easily extinguished, especially when the voltage is high (such as 1500Vdc). Therefore, the operating trip mechanism of the circuit breaker needs to be provided with a sudden trip structure when disconnecting.

[0003] Chinese patent document CN113078036A discloses an operating tripping system for a miniature circuit breaker, which adopts a sudden tripping structure and can perform instant opening and closing when realizing opening and closing between a moving contact and a static contact.

[0004] However, the various components of the operating tripping system in the above solution are separately installed inside the circuit breaker housing, which results in cumbersome assembly procedures when assembling the circuit breaker. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defect of complicated assembly process of the operating tripping mechanism of the circuit breaker in the prior art, thereby providing a modular operating tripping mechanism and an electric switch having the same.

[0006] In order to solve the above technical problems, the present invention provides an operating tripping mechanism, comprising:

[0007] a housing adapted to be integrally mounted on a base of an electric switch, an operating handle being disposed on the housing, a driving member being movably disposed within the housing, the driving member being connected to the operating handle via a first elastic member, the first elastic member having an elastic force for driving the driving member to follow the movement of the operating handle;

[0008] The housing is provided with: a first limiting assembly and a second limiting assembly, the first limiting assembly and the second limiting assembly being movably connected to the housing respectively; when the driving member is in the open position, the first limiting assembly locks the driving member, and when the driving member is in the closed position, the second limiting assembly locks the driving member;

[0009] The operating handle has a release member for unlocking the first limit assembly and the second limit assembly; when the operating handle is opened or closed, the release member on the operating handle first contacts the first limit assembly or the second limit assembly, so that the first limit assembly or the second limit assembly releases the lock on the driving member.

[0010] Optionally, the operating handle and the driving member are rotatably connected in the housing via the same rotating shaft.

[0011] Optionally, the operating handle has a swivel mounted on a rotating shaft, and the swivel has: a first release member and a second release member protruding radially outward, the first release member has an inclined surface or an arc surface for shifting the first limiting assembly, and the second release member has an inclined surface or an arc surface for shifting the second limiting assembly.

[0012] Optionally, the first limiting assembly includes: a first locking member, one end of the first locking member is rotatably connected to the driving member, and the other end of the first locking member is slidably disposed in the housing;

[0013] The first locking member has a first retreat surface for cooperating with the first release member, and the first retreat surface is an inclined surface or an arc surface.

[0014] Optionally, a limiting shaft is provided on the first locking member, and a first sliding groove for accommodating the limiting shaft is provided in the housing. When the first locking member is driven by the driving member, the limiting shaft slides in the housing.

[0015] Optionally, the second limiting assembly includes: a second locking member, the second locking member is rotatably connected in the shell, the second locking member has a card table for cooperating with the driving member, and the second locking member also has a second retreat surface for cooperating with the second release member, and the second retreat surface is a sloped surface or an arc-shaped surface.

[0016] Optionally, a second elastic member is connected to the second limiting assembly, and the second elastic member has an elastic force for driving the second limiting assembly to rotate toward a dead point position for locking the driving member.

[0017] Optionally, the second locking member has an extension rod extending toward the distal end, and the housing has a pressure plate for cooperating with the extension rod.

[0018] Optionally, a third elastic member is connected to the driving member, and the third elastic member has an elastic force that drives the driving member and the operating handle to rotate toward the opening position.

[0019] The present invention further provides an electric switch, comprising: an operating tripping mechanism according to any one of the above solutions.

[0020] The technical solution of the present invention has the following advantages:

[0021] 1. The operating trip mechanism provided by the present invention integrates the operating handle and the snap-action structure in a single housing. The housing can be integrally mounted on the base of the electric switch. Therefore, when assembling the electric switch, it is only necessary to integrally mount the operating trip mechanism on the electric switch using fasteners, thereby simplifying the assembly process of the electric switch.

[0022] 2. In the operating tripping mechanism provided by the present invention, the operating handle and the driving member are connected by a first elastic member. With such an arrangement, when the driving member is locked, even if the operating handle is driven, the driving member will not rotate with the operating handle, thereby allowing the first elastic member to store energy.

[0023] 3. The operating tripping mechanism provided by the present invention has the following characteristics: when the operating handle is rotated to a certain distance, the tripping member on the operating handle will release the locking assembly from locking the driving member, thereby allowing the driving member to perform a sudden rotation under the action of the first elastic member. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a perspective view of an implementation manner of an electric switch provided in an embodiment of the present invention.

[0026] Figure 2 for Figure 1 A three-dimensional cross-sectional view of the operating trip mechanism of a CLP switch.

[0027] Figure 3 for Figure 2 Main view of the middle operating handle.

[0028] Figure 4 for Figure 2 A perspective view of the middle shell.

[0029] Figure 5 for Figure 2 Front view of the middle drive component.

[0030] Figure 6 for Figure 2 Front view of the second locking member of the second limiting assembly.

[0031] Figure 7 for Figure 2 Side sectional view of the operating handle and drive member.

[0032] Figure 8This is the main view of the operating handle of the trip mechanism when it is turned toward the closing direction.

[0033] Figure 9 This is the main view of the trip mechanism when the operating handle is turned to the closed position.

[0034] Figure 10 This is the main view of the operating handle of the tripping mechanism when it is turned toward the opening direction.

[0035] Description of reference numerals:

[0036] 1. Housing; 2. Base; 3. Operating handle; 4. Driving member; 5. Connecting hole; 6. First elastic member; 7. First limiting assembly; 8. Second limiting assembly; 9. Rotating body; 10. First tripping member; 11. Second tripping member; 12. First locking member; 13. First retreat surface; 14. Limiting shaft; 15. First slide groove; 16. Second locking member; 17. Card table; 18. Second retreat surface; 19. Extension rod; 20. Third elastic member; 21. Card connection surface; 22. Retreat pin; 23. Pressing plate. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0040] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] This embodiment provides an electric switch for closing and opening operations, and specifically, may be a circuit breaker switch.

[0042] like Figure 1 As shown, a specific implementation of the electric switch provided in this embodiment includes: a base 2 and a shell 1 connected to the base 2, and the shell 1 can be installed on the base 2 by fasteners. The shell 1 is the shell 1 of the operating tripping mechanism. The operating tripping mechanism provided in this embodiment serves as a detachable module of the electric switch, which integrates the operating handle 3 and the jump structure in a separate shell 1. The shell 1 can be installed as a whole on the base 2 of the electric switch, so that when assembling the electric switch, it is only necessary to install the operating tripping mechanism as a whole on the electric switch using fasteners, thereby simplifying the assembly process of the electric switch. In addition, as an alternative embodiment, the shell 1 of the operating tripping mechanism can also be fixed to the base 2 of the electric switch by snapping and / or bonding.

[0043] like Figure 2 As shown, the operating tripping mechanism provided in this embodiment includes: a shell 1, an operating handle 3 is provided on the shell 1, a driving member 4 is movably provided in the shell 1, the driving member 4 is connected to the operating handle 3 by a first elastic member 6, and the first elastic member 6 has an elastic force that drives the driving member 4 to move following the operating handle 3; specifically, the operating handle 3 and the driving member 4 are rotatably connected in the shell 1 through the same rotating shaft. When the operating handle 3 is rotated, the driving member 4 can be driven to rotate along with it by the first elastic member 6, and the driving member 4 is used to drive the moving contact frame in the base 2 of the electric switch to move to open and close.

[0044] like Figure 2 As shown, the shell 1 is provided with: a first limiting component 7 and a second limiting component 8, and the first limiting component 7 and the second limiting component 8 are movably connected in the shell 1 respectively; when the driving member 4 is in the opening position, the first limiting component 7 locks the driving member 4, and when the driving member 4 is in the closing position, the second limiting component 8 locks the driving member 4.

[0045] like Figure 3As shown, the operating handle 3 has a release member for unlocking the first limiting assembly 7 and the second limiting assembly 8. When the operating handle 3 is opened, the operating handle 3 rotates, and the release member first contacts the first limiting assembly 7, so that the first limiting assembly 7 releases the limit on the driving member 4. When the operating handle 3 is closed, the operating handle 3 rotates, and the release member first contacts the second limiting assembly 8, so that the second limiting assembly 8 releases the lock on the driving member 4. Specifically, the operating handle 3 and the driving member 4 are rotatably connected in the housing 1 via a rotating shaft. The operating handle 3 has a swivel 9 sleeved on the rotating shaft. The swivel 9 has: a first release member 10 and a second release member 11 protruding radially outward. The first release member 10 has an inclined surface or an arc surface for shifting the first limiting assembly 7, and the second release member 11 has an inclined surface or an arc surface for shifting the second limiting assembly 8.

[0046] like Figure 2 As shown, the first limiting assembly 7 includes: a first locking member 12, one end of which is rotatably connected to the driving member 4, and the other end of which is slidably disposed within the housing 1; a cylindrical retreat pin 22 is provided on the first locking member 12, and the sidewall of the retreat pin 22 forms a first retreat surface 13 for engaging with the first release member 10. The first retreat surface 13 is an arcuate surface. Alternatively, as an alternative embodiment, the first retreat surface 13 shown may be an inclined surface, and the retreat pin 22 may be another protrusion formed on the first locking member 12.

[0047] like Figure 2 、 Figure 4 As shown, a limiting shaft 14 is provided on the first locking member 12, and a first sliding groove 15 for accommodating the limiting shaft 14 is provided in the shell 1. When the first locking member 12 moves under the drive of the driving member 4, the limiting shaft 14 slides in the shell 1 so that the first locking member 12 can be driven to reach the dead point position for locking the driving member 4.

[0048] like Figure 5 As shown, the driving member 4 has a snap-fit ​​surface 21 for cooperating with the second limit assembly 8. When the operating handle 3 drives the driving member 4 to reach the closing position, the snap-fit ​​surface 21 on the driving member 4 and the second limit assembly 8 are locked by snapping.

[0049] like Figure 5 As shown, the driving member 4 has a connecting hole 5 for rotatably connecting to the first locking member 12 of the second limiting assembly 8 , and one end of the first locking member 12 is rotatably connected to the driving member 4 through the connecting hole 5 .

[0050] like Figure 2 、 Figure 6 As shown, the second position-limiting assembly 8 includes a second locking member 16 rotatably connected within the housing 1. The second locking member 16 has a latching platform 17 for engaging with a latching surface 21 on the driver 4. The second locking member 16 also has a second recessed surface 18 for engaging with the second release member 11. The second recessed surface 18 is an inclined or curved surface. A second elastic member is connected to the second position-limiting assembly 8. The second elastic member has an elastic force that drives the second position-limiting assembly 8 to rotate toward a dead center position that locks the driver 4. The second locking member 16 has an extension rod 19 extending toward the distal end. A pressure plate 23 is located within the housing 1 for engaging with the extension rod 19. The provision of the extension rod 19 on the second locking member 16 reduces the force applied by the pressure plate 23 against the second locking member 16, allowing a very small force to engage the second locking member 16 at a dead center position that locks the driver 4.

[0051] like Figure 7 As shown, the operating handle 3 and the driving member 4 are connected by a first elastic member 6. In this arrangement, when the driving member 4 is locked in the opening position or the closing position, at this time, in the initial stage of driving the operating handle 3 to rotate, the driving member 4 will not rotate with the operating handle 3, so that the first elastic member 6 stores energy. When the operating handle 3 is rotated to a certain angle, the tripping member on the operating handle 3 releases the lock of the driving member 4, so that the energy of the first elastic member 6 is instantly released to achieve a sudden jump effect.

[0052] like Figure 7 As shown, a third elastic member 20 is connected to the driving member 4, and the third elastic member 20 has an elastic force that drives the driving member 4 and the operating handle 3 to rotate toward the opening position. When the operating handle 3 is rotated to the closing position, the third elastic member 20 is in an energy storage state between the driving member 4 and the housing 1. When the operating handle 3 is rotated toward the opening position, the driving member 4 rotates along with the operating handle 3. At this time, the energy of the third elastic member 20 is released, and the third elastic member 20 drives the driving member 4 and the operating handle 3 to return to the opening position smoothly. It should be noted that the elastic force that the third elastic member 20 can provide to rotate the driving member 4 toward the opening position is smaller than the elastic force of the first elastic member 6 to store energy when the operating handle 3 is rotated toward the closing position. This ensures that the first elastic member 6 can provide the driving member 4 with a sudden jump force when closing.

[0053] like Figure 8As shown, in the opening position, when the operating handle 3 is rotated toward the closing direction, in the initial stage, the operating handle 3 rotates a distance. During this process, the driving member 4 is locked by the first limit assembly 7, so the driving member 4 does not rotate, and the first elastic member 6 located between the driving member 4 and the operating handle 3 stores energy. When the first release member 10 on the operating handle 3 contacts the first limit assembly 7, the first release member 10 releases the lock of the first locking assembly on the driving member 4, allowing the driving member 4 to suddenly rotate under the action of the first elastic member 6.

[0054] like Figure 9 As shown, when the operating handle 3 is rotated to the closed position, the driving member 4 is locked in the closed position by the second limiting assembly 8. Specifically, the engaging surface 21 on the driving member 4 cooperates with the engaging platform 17 on the second locking member 16. At this time, the second locking member 16 is in a dead point position where it can only rotate counterclockwise, thereby locking the driving member 4. At this time, the first locking member 12 of the first limiting assembly 7 rotates under the drive of the driving member 4, and the limiting shaft 14 on the first locking member 12 slides along the first sliding groove 15 in a direction away from the driving member 4.

[0055] like Figure 10 As shown, when the operating handle 3 rotates toward the opening direction, in the initial stage, the operating handle 3 first rotates a certain distance. During this process, since the driving member 4 is locked by the second limiting assembly 8, the driving member 4 does not rotate, and the first elastic member 6 located between the driving member 4 and the operating handle 3 stores energy. When the second tripping member 11 on the operating handle 3 contacts the second limiting assembly 8, the second tripping member 11 will release the lock of the second locking assembly on the driving member 4, so that the driving member 4 can suddenly rotate under the action of the first elastic member 6. At this time, the first locking member 12 of the first limiting assembly 7 rotates clockwise under the drive of the driving member 4, and the limiting shaft 14 on the first locking member 12 slides along the first sliding groove 15 toward the direction close to the driving member 4, so that the first locking member 12 locks the driving member 4 when the driving member 4 reaches the opening position.

[0056] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications derived therefrom remain within the scope of protection of the present invention.

Claims

1. Operation trip mechanism, characterized in that, include: A housing (1), the housing (1) being adapted to be integrally mounted on a base (2) of an electric switch, the housing (1) being provided with an operating handle (3), a driving member (4) being movably provided in the housing (1), the driving member (4) being connected to the operating handle (3) via a first elastic member (6), the first elastic member (6) having an elastic force for driving the driving member (4) to follow the movement of the operating handle (3); The housing (1) is provided with: a first limiting assembly (7) and a second limiting assembly (8), the first limiting assembly (7) and the second limiting assembly (8) being movably connected in the housing (1); when the driving member (4) is in the opening position, the first limiting assembly (7) locks the driving member (4); when the driving member (4) is in the closing position, the second limiting assembly (8) locks the driving member (4); The operating handle (3) is provided with a release member for unlocking the first limiting assembly (7) and the second limiting assembly (8); when the operating handle (3) is opened or closed, the release member on the operating handle (3) first contacts the first limiting assembly (7) or the second limiting assembly (8), so that the first limiting assembly (7) or the second limiting assembly (8) releases the lock on the driving member (4).

2. The operating tripping mechanism according to claim 1, characterized in that: The operating handle (3) and the driving member (4) are rotatably connected in the housing (1) via the same rotating shaft.

3. The operating tripping mechanism according to claim 2, characterized in that: The operating handle (3) has a rotating body (9) sleeved on a rotating shaft, and the rotating body (9) has: a first release member (10) and a second release member (11) protruding radially outward, the first release member (10) has an inclined surface or an arc surface for shifting the first limiting component (7), and the second release member (11) has an inclined surface or an arc surface for shifting the second limiting component (8).

4. The operating tripping mechanism according to claim 3, characterized in that: The first limiting assembly (7) comprises: a first locking member (12), one end of the first locking member (12) being rotatably connected to the driving member (4), and the other end of the first locking member (12) being slidably disposed in the housing (1); The first locking member (12) has a first retreat surface (13) for cooperating with the first release member (10), and the first retreat surface (13) is an inclined surface or an arc-shaped surface.

5. The operating tripping mechanism according to claim 4, characterized in that: A limiting shaft (14) is provided on the first locking member (12), and a first sliding groove (15) for accommodating the limiting shaft (14) is provided in the housing (1). When the first locking member (12) is driven by the driving member (4), the limiting shaft (14) slides in the housing (1).

6. The operating tripping mechanism according to claim 3, characterized in that: The second limiting assembly (8) comprises: a second locking member (16), the second locking member (16) being rotatably connected in the housing (1), the second locking member (16) having a card table (17) for cooperating with the driving member (4), and the second locking member (16) also having a second retreat surface (18) for cooperating with the second release member (11), the second retreat surface (18) being an inclined surface or an arcuate surface.

7. The operating tripping mechanism according to claim 6, characterized in that: The second limiting assembly (8) is connected to a second elastic member, and the second elastic member has an elastic force that drives the second limiting assembly (8) to rotate toward a dead point position for locking the driving member (4).

8. The operating tripping mechanism according to claim 7, characterized in that: The second locking member (16) is provided with an extension rod (19) extending toward the distal end, and the housing (1) is provided with a pressing plate (23) for cooperating with the extension rod (19).

9. The operating tripping mechanism according to any one of claims 1 to 8, characterized in that: The driving member (4) is connected to a third elastic member (20), and the third elastic member (20) has an elastic force for driving the driving member (4) and the operating handle (3) to rotate toward the opening position.

10. An electric switch, characterized in that include: The operating tripping mechanism according to any one of claims 1 to 9.

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