Circuit breaker interlocking mechanism

Abstract

The utility model relates to a circuit breaker interlocking mechanism, which comprises an interlocking device and a connecting seat in a shell structure, a rotating assembly is rotatably connected onto the connecting seat, a handle knob used for driving the rotating assembly to rotate is rotatably arranged on the interlocking device, an extension rod is arranged between the handle knob and the rotating assembly, and the extension rod is connected with the connecting seat. The interlocking device and the connecting seat are provided with clamping assemblies used for fixing the extension rod, and the clamping assemblies comprise a front end clamping assembly arranged on the interlocking device and a rear end clamping assembly arranged on the connecting seat. The connecting seat connected with the circuit breaker and the handle knob for adjustment are separately arranged, the depth between the circuit breaker and the interlocking device is prolonged, the interlocking device can be arranged outside an electric appliance cabinet or at a place convenient to control, an operator adjusts the handle knob externally connected with the circuit breaker, control over the circuit breaker is achieved, and the circuit breaker is more convenient to adjust.

Description

Technical Field

[0001] The utility model belongs to the technical field of interlocking, and particularly relates to a circuit breaker interlocking mechanism. Background Art

[0002] A circuit breaker is an electrical device used to protect circuits from damage caused by overload or short circuit, and is also used to safely isolate circuits for maintenance and repair.

[0003] The circuit breaker interlocking mechanism includes an interlocking device operated manually, which requires additional manual steps by the operator to complete the switching operation of the circuit breaker. It is usually used to ensure safe and correct operating procedures. Existing circuit breakers are generally located inside the electrical cabinet. Whenever it is necessary to manually cut off the circuit, the electrical cabinet needs to be opened and then the circuit breaker control is searched for, which is not convenient for adjustment. In case of an emergency, it takes a long time to control and cut off the circuit breaker. Summary of the Invention

[0004] Objective of the utility model: In order to overcome the defects of the prior art, the utility model provides a circuit breaker interlocking mechanism, which is convenient for the operator to install and solves the problem that the circuit breaker located inside the electrical cabinet is not convenient for adjustment.

[0005] Technical solution of the utility model: A circuit breaker interlocking mechanism includes an interlocking device and a connection seat in the form of a housing structure. A rotating assembly is rotatably connected to the connection seat. The rotating assembly includes a torsion spring and a clamping member for clamping the handle. A handle knob for driving the rotating assembly to rotate is rotatably provided on the interlocking device. An extension rod is provided between the handle knob and the rotating assembly. Clamping components for fixing the extension rod are provided on the interlocking device and the connection seat. The clamping components include a front-end clamping component provided on the interlocking device and a rear-end clamping component provided on the connection seat.

[0006] By adopting the above technical solution, by setting the extension rod, the connection seat connecting the circuit breaker and the handle knob for adjustment are separately arranged, which extends the depth between the circuit breaker and the interlocking device. The interlocking device can be set outside the electrical cabinet or in a convenient place for operation. The operator adjusts the handle knob externally connected to the circuit breaker to realize the control of the circuit breaker, making the adjustment of the circuit breaker more convenient.

[0007] Further setting of the utility model: The extension rod includes a head in the form of a round rod structure and a rod body in the form of a rectangular rod structure. A limiting rod is inserted through the head. The head is connected to the front-end clamping component, and the bottom end of the rod body is connected to the rear-end clamping component;

[0008] The front clamping assembly includes an end cover for covering the end face of the interlocking device close to the connection seat. The handle knob is provided with a limit groove for placing the limit rod, and the end cover is provided with a cross through hole for passing through the head and the limit rod.

[0009] The rear clamping assembly further includes a rotating seat rotatably arranged with the connection seat. The rotating seat is provided with a rectangular hole for inserting the extension rod. The rotating assembly is arranged on the end face of the rotating seat away from the interlocking device. Two limit members are fixedly arranged on the end face of the rotating seat close to the interlocking device. The two limit members are symmetrically arranged with respect to the center of the rectangular hole. The limit member includes a bent portion for contacting and clamping the bent portion of the extension rod and threaded holes arranged on both sides of the bent portion. A bolt is passed through the threaded holes on the two limit members, and the two bent portions contact and clamp the extension rod by tightening the bolt.

[0010] With the above further arrangement, the front clamping assembly and the rear clamping assembly respectively fix and clamp the two ends of the extension rod, and the rod body is set to have a rectangular rod with edges and corners, which can prevent the rod body from rotating relative to the rear clamping assembly. Moreover, the limit rod passed through the head is placed on the back of the handle knob, so that the rotation of the handle knob can be accurately transmitted to the rear clamping assembly.

[0011] A further further arrangement of the present utility model: The cross section of the limit groove is an L-shaped structure with a central circle, and the L-shaped is longer than the length of the limit rod. The cross through hole as a whole has a structure of two L-shaped grooves perpendicular to each other.

[0012] With the above further further arrangement, the structures of the limit groove and the cross through hole are restricted. When the head with the limit rod extends into the limit groove, it is restricted. Thus, the rotation of the handle knob drives the head and the rod body to rotate as a whole. Moreover, the limit groove can accommodate the round rod-shaped head. Thus, the head can pass through the middle space of the cross through hole without affecting the rotation of the extension rod, and the limit rod can pass through the cross through hole, enabling the limit rod to be inserted after the end cover and the interlocking device are installed, making the overall installation more convenient.

[0013] A further further arrangement of the present utility model: The interlocking device is provided with an anti-disengagement assembly. The anti-disengagement assembly includes an anti-disengagement member arranged on the end cover and a driving member rotatably connected to the interlocking device. The anti-disengagement member includes a limiting portion for preventing the limit rod from disengaging and a contact portion controlled by the driving member. A telescopic spring for resetting the anti-disengagement member is arranged between the anti-disengagement member and the inner wall of the end cover. The limiting portion extends into the cross through hole and is provided with a chamfer on the side close to the connection seat.

[0014] With the above further setting, by providing an anti - detachment component on the interlocking device, it is possible to prevent the installed extension rod from rotating and detaching from the interlocking device. Moreover, the provided driving member can push open the contact portion, causing the anti - detachment member extending into the cross - through hole to leave the cross - through hole, realizing the manual separation of the interlocking device and the extension rod. And the chamfer provided on the limiting portion facilitates the installation of the extension rod. Align the interlocking device with the position of the limiting rod of the extension rod and press, then the installation of the extension rod and the interlocking device can be achieved. Under the action of pressure, the limiting rod pushes the chamfer of the limiting portion, causing the anti - detachment member to act against the acting force of the telescopic spring. After the limiting rod completely passes through the cross - through hole, at this time, the extension rod does not contact the anti - detachment member, and the anti - detachment member is reset under the acting force of the telescopic spring. The flat back of the chamfer of its limiting portion prevents the extension rod from detaching.

[0015] A further setting of the present utility model: A connecting piece for blocking the rectangular hole is fixedly connected to the end face of the rotating seat away from the interlocking device. The buckle member is provided with a sliding groove and a fixing hole. The fixing hole and the torsion spring are fixed to the connecting seat by bolts. The connecting piece is provided with a convex block that can slide in the sliding groove. The two ends of the torsion spring respectively contact the buckle member and the inner wall of the connecting seat.

[0016] With the above further setting, by providing a connecting piece, it is possible to prevent the extension rod from sliding inward under excessive force and contacting the rotating assembly, thereby causing the relay handle to be unable to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a specific embodiment of the present utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of another perspective of a specific embodiment of the present utility model;

[0019] Figure 3 It is a schematic diagram of the overall structure of a specific embodiment of the present utility model after hiding the end cover;

[0020] Figure 4 It is a schematic diagram of the overall structure of the cooperation between the connecting seat and the rear clamping assembly in a specific embodiment of the present utility model;

[0021] Figure 5 It is a schematic diagram of the overall structure of the cooperation between the end cover and the anti - detachment member in a specific embodiment of the present utility model;

[0022] Figure 6 It is a schematic diagram of the overall structure of the extension rod in a specific embodiment of the present utility model;

[0023] Figure 7 It is a schematic diagram of the overall structure of the end cover in a specific embodiment of the present utility model.

[0024] In the figure: 1. Interlocking device; 2. Connecting seat; 3. Extension rod; 4. Handle knob; 5. Torsion spring; 6. Buckling part; 7. End cover; 8. Anti-disengagement part; 9. Driving part; 21. Rotating seat; 22. Limiting part; 221. Bending part; 222. Threaded hole; 23. Connecting piece; 31. Head; 32. Rod body; 33. Limiting rod; 41. Limiting groove; 71. Cross through hole; 81. Contact part; 82. Limiting part; 83. Telescopic spring. Detailed implementation manner

[0025] Next, the technical solutions in this embodiment will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0026] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back...) are only used to explain the relative position relationship and movement conditions between components in a certain specific posture (as shown in the drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0027] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. In the description of the present invention, the meaning of "several" is at least two, for example, two, three, etc., unless otherwise clearly and specifically defined.

[0028] In addition, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0029] As Figure 1-7 shown, a circuit breaker interlocking mechanism includes an interlocking device 1 in the form of a housing structure, a connecting seat 2, and a clamping assembly. A rotating assembly is rotatably connected to the connecting seat 2. The rotating assembly includes a torsion spring 5 and a buckling part 6 for buckling the relay handle. A handle knob 4 for driving the rotating assembly to rotate is rotatably provided on the interlocking device 1. The handle knob 4 and the rotating assembly are connected to transmit rotation through the extension rod 3. By providing the extension rod 3, the connecting seat 2 connecting the circuit breaker handle and the handle knob for adjustment are separately arranged, increasing the length of the operating lever. The operator can operate at a farther position, farther from the live part, reducing the probability of contacting the live part.

[0030] The extension rod 3 includes a head 31 in a round rod structure and a rod body 32 in a rectangular rod structure. A limiting rod 33 is inserted through the head 31. The head 31 is connected to the front clamping assembly, and the bottom end of the rod body 32 is connected to the rear clamping assembly.

[0031] The clamping assembly includes a front clamping assembly provided on the interlocking device 1 and a rear clamping assembly provided on the connecting seat 2.

[0032] The front clamping assembly includes an end cover 7 for covering the end face of the interlocking device 1 close to the connecting seat 2. A limiting groove 41 for placing the limiting rod 33 is provided on the handle knob 4. The limiting groove 41 is opened on the end face of the handle knob 4 close to the connecting seat 2. A retaining piece can be fixedly arranged on one side of the handle knob 4 close to the connecting seat 2 and rotate together with the handle knob 4. A through hole identical to the limiting groove 41 is opened on the retaining piece, which does not affect the insertion of the extension rod 3. A protrusion can be provided on the side of the retaining piece. A stopper is arranged on the end cover 7. The protrusion and the stopper cooperate to limit the rotation range of the handle knob 4, avoiding the situation that the handle knob 4 rotates excessively and damages the rotating assembly.

[0033] The cross-section of the limiting groove 41 is in a shape of a straight line with a central circle, and the straight line is longer than the length of the limiting rod 33. The limiting groove 41 can accommodate the round rod-shaped head, and can smoothly place the head with the limiting rod 33 into it and limit its rotation, which can prevent the rod body 31 from rotating relative to the handle knob 4. When the head 31 with the limiting rod 33 extends into the limiting groove 41, it is limited. Thus, when the handle knob 4 rotates, it drives the head 31 and the rod body 32 to rotate as a whole. A cross-shaped through hole 71 for passing through the head 31 and the limiting rod 33 is provided on the end cover 7. The cross-shaped through hole 71 is in a structure of two mutually perpendicular limiting grooves 41. Thus, the head 31 can pass through the middle space of the cross-shaped through hole 71 without affecting the rotation of the extension rod 3, and the limiting rod 33 can pass through the cross-shaped through hole 71, which can realize inserting the limiting rod after installing the end cover 7 and the interlocking device 1, making the overall installation more convenient.

[0034] The rear clamping assembly includes a rotating seat 21 rotatably arranged on the connecting seat 2. A rectangular hole for inserting the extension rod 3, which can also be a rectangular groove, is provided on the rotating seat 21. The rectangular shape corresponds to the rod body 32 of the extension rod 3 in a rectangular rod structure. Its angular structure can prevent the rod body 32 from rotating in the rectangular hole and prevent the rod body 31 from rotating relative to the rotating seat 21. Two limiting pieces 22 are fixedly arranged on the end face of the rotating seat 21 close to the interlocking device 1. The two limiting pieces 22 are symmetrically arranged with respect to the center of the rectangular hole.

[0035] The limiting member 22 can be made by bending sheet metal, and is integrally L-shaped, including a fixing portion fixed to the rotating base 21 and a clamping portion for clamping the extension rod 3. The clamping portion of the limiting member 22 includes a bending portion 221 for contacting and clamping the extension rod 3, and threaded holes 222 and through holes provided at both ends of the bending portion 221. A bolt is passed through the threaded hole 222 on the limiting member 22 and the through hole of another limiting member 22 symmetrically arranged. The bending portions 221 of the two limiting members 22 contact and clamp the extension rod 3 by tightening the two bolts. Thus, the rotation of the handle knob 4 can be accurately transmitted to the rotating base 21 through the extension rod 3.

[0036] Further, as shown by Figure 2 , Figure 5 , an anti-disengagement component is provided on the interlocking device 1 to prevent the installed extension rod 3 from automatically disengaging from the interlocking device 1 after rotation. The anti-disengagement component includes an anti-disengagement member 8 provided on the end cover 7 and a driving member 9 rotatably connected to the interlocking device 1. The driving member 9 extends out of the end face of the interlocking device 1 where the handle knob 4 is provided, and the driving member 9 can be manually adjusted to rotate. The anti-disengagement member 8 includes a limiting portion 82 for preventing the limiting rod 33 from disengaging and a contact portion 81 controlled by the driving member 9. A telescopic spring 83 for resetting the anti-disengagement member 8 is provided between the anti-disengagement member 8 and the inner wall of the end cover 7. Rotating the driving member 9 can overcome the elastic force of the telescopic spring 83 to push open the contact portion 81, so that the anti-disengagement member 8 extending into the cross through hole 71 leaves the cross through hole 71, realizing the manual separation of the interlocking device 1 and the extension rod 3;

[0037] The limiting portion 82 extends into the cross through hole 71 and is provided with a chamfer on the side close to the connecting seat 2. Aligning the interlocking device 1 with the position of the limiting rod 33 on the extension rod 3 and pressing can realize the installation of the extension rod 3 and the interlocking device 1. When pressing the interlocking device 1, the chamfer of the limiting portion 82 can be contacted and pushed open. The limiting rod 33 pushes the chamfer of the limiting portion 82 under the action of pressure, so that the anti-disengagement member 8 acts against the acting force of the telescopic spring 83. After the limiting rod 33 completely passes through the cross through hole 71, at this time, it does not contact the anti-disengagement member 8, and the anti-disengagement member 8 is reset under the action of the telescopic spring 83. The back of the chamfer of its limiting portion 82 is a flat plane, which can prevent the extension rod from disengaging.

[0038] A connecting piece 23 for blocking the rectangular hole is fixedly connected to the end face of the rotating base 21 away from the interlocking device 1, preventing the extension rod 3 from sliding inward under excessive force and contacting the rotating assembly, thus causing the relay handle to be unable to rotate.

[0039] The buckle member 6 is provided with a chute and a fixing hole. The fixing hole and the torsion spring 5 are fixed to the connecting seat 2 by bolts. The connecting piece 23 is provided with a convex block that can slide in the chute. The two ends of the torsion spring 5 respectively contact the buckle member 6 and the inner wall of the connecting seat 2, realizing the automatic reset function of the relay interlocking device.

[0040] In summary, the front clamping component and the rear clamping component respectively fix and clamp both ends of the extension rod 3, enabling the rotation of the handle knob 4 to be accurately transmitted to the rear clamping component.

Claims

1. A circuit breaker interlocking mechanism, comprising an interlocking device (1) and a connecting seat (2) in a housing structure. A rotating assembly is rotatably connected to the connecting seat (2). The rotating assembly includes a torsion spring (5) and a buckle member (6) for connecting a circuit breaker switch. A handle knob (4) for driving the rotating assembly to rotate is rotatably provided on the interlocking device (1), characterized in that, An extension rod (3) is provided between the handle knob (4) and the rotating assembly. A clamping assembly for fixing the extension rod (3) is provided on the interlocking device (1) and the connection seat (2). The clamping assembly includes a front-end clamping assembly provided on the interlocking device (1) and a rear-end clamping assembly provided on the connection seat (2).

2. The circuit breaker interlocking mechanism according to claim 1, characterized in that, The extension rod (3) includes a head (31) in a round rod structure and a rod body (32) in a rectangular rod structure. A limiting rod (33) is inserted through the head (31). The head (31) is arranged on the front-end clamping assembly, and the bottom end of the rod body (32) is connected and arranged on the rear-end clamping assembly.

3. The circuit breaker interlocking mechanism according to claim 2, wherein The front-end clamping assembly includes an end cover (7) for covering the end face of the interlocking device (1) close to the connection seat (2). A limiting groove (41) for placing the limiting rod (33) is provided on the handle knob (4). A cross through-hole (71) for passing through the head (31) and the limiting rod (33) is provided on the end cover (7).

4. A circuit breaker interlocking mechanism according to claim 1 or 2, characterized in that, The rear-end clamping assembly further includes a rotating seat (21) rotatably arranged on the connection seat (2). A rectangular hole for inserting the extension rod (3) is provided on the rotating seat (21). Two limiting members (22) are fixedly arranged on the end face of the rotating seat (21) close to the interlocking device (1). The two limiting members (22) are symmetrically arranged with respect to the center of the rectangular hole. The limiting member (22) includes a bent portion (221) for contacting and clamping the extension rod (3), and threaded holes (222) and through-holes arranged at both ends of the bent portion (221). A bolt is inserted through the threaded hole (222) on the limiting member (22) and the through-hole of the other limiting member (22). The two bent portions (221) contact and clamp the extension rod (3) by screwing the bolt.

5. The circuit breaker interlock mechanism according to claim 3, characterized in that, The cross-section of the limiting groove (41) is a one-shaped structure with a central circle, and the one-shaped is longer than the length of the limiting rod (33). The cross through-hole (71) is integrally in a structure in the shape of two mutually perpendicular limiting grooves (41).

6. The circuit breaker interlocking mechanism according to claim 3, characterized in that, An anti-disengagement assembly is provided on the interlocking device (1). The anti-disengagement assembly includes an anti-disengagement member (8) arranged on the end cover (7) and a driving member (9) rotatably connected to the interlocking device (1). The anti-disengagement member (8) includes a limiting portion (82) for preventing the limiting rod (33) from disengaging and a contact portion (81) controlled by the driving member (9). A telescopic spring (83) for resetting the anti-disengagement member (8) is provided between the anti-disengagement member (8) and the end cover (7). The limiting portion (82) extends into the cross through-hole (71) and is provided with a chamfer on the side close to the connection seat (2).

7. The circuit breaker interlocking mechanism according to claim 4, characterized in that, A connecting piece (23) for blocking the rectangular hole is fixedly connected to an end surface of the transposon (21) facing away from the interlocking device (1). A sliding groove and a fixing hole are provided on the buckle member (6). The fixing hole and the torsion spring (5) are fixed to the connection base (2) by bolts. A convex block that can slide in the sliding groove is provided on the connecting piece (23). Two ends of the torsion spring (5) respectively contact the buckle member (6) and the inner wall of the connection base (2).

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