A circuit breaker handle padlock structure

Abstract

A circuit breaker handle padlock structure comprises a handle (1), a padlock member (2) mounted in a mounting groove (101) on the handle (1) and capable of rotating around a rotation center (o), the padlock member (2) being linked to a stop member (3), and characterized in that: the padlock member (2) and the stop member (3) are linked via a motion trajectory control body (a), and during the counterclockwise rotation of the padlock member (2) around the rotation center (o): first, a characteristic portion 1 (a1) of the motion trajectory control body (a) drives the stop member (3) to overcome the reset force of an elastic element (4) and drive a slide plate (5) to slide and thereby lock a connecting square shaft (6), and then a characteristic portion 2 (a2) of the motion trajectory control body (a) causes the stop member to overcome the reset force of the elastic element (4) and thereby achieve mutual self-locking; the structure is easy to operate, and the locking position is independent of manual operation and the specifications of the lock, and can be achieved by simply adding a motion trajectory control body, and the padlock function is safe and reliable.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit breakers, and in particular relates to a circuit breaker handle padlock structure, which improves the reliability of the padlock of the circuit breaker handle. Background Art

[0002] Circuit breakers are typically installed inside switchgear cabinets. They are operated by connecting a square shaft to an external operating handle. The square shaft is fixed to the circuit breaker body and has a plug-in, flexible connection to the external handle. If the square shaft and the external handle are locked and cannot be removed, the cabinet door cannot be opened.

[0003] When a circuit breaker is in the off state, electrical circuits can be inspected and repaired. To prevent the circuit breaker from being closed during this phase, which could lead to various accidents, the circuit breaker needs to be locked. This function is often achieved by locking the handle. The handle is often locked using a padlock to prevent accidental closing of the circuit breaker.

[0004] When the circuit breaker is in the closed position, the connecting square shaft is locked and the cabinet door cannot be opened; if you want to open the cabinet door, press the slide, and the slide moves to the right to unlock the connecting square shaft, so that the cabinet door can be temporarily opened.

[0005] If the padlock used is not standardized, it is likely that the padlock will not be tilted at the correct angle, making it impossible to insert the stopper into place and reliably lock the connecting square shaft. Even if the padlock is locked, there is a risk that the cabinet door can be opened and the switch can be directly operated. Most existing cabinet handle padlock devices are manually rotated and tilted. After the manual force disappears, the padlock automatically falls back under the action of the reset spring. The padlock itself has no positioning function and relies entirely on the lock to limit the position. It can only meet the locking function of the handle, and the demand for the cabinet door locking function is not high.

[0006] Chinese Patent No. 200420054892.5 discloses a switch cabinet operating handle, comprising a handle body, a mounting chassis, and a handle positioning and anti-rotation mechanism disposed in the handle body and acting on the mounting chassis, wherein the mounting chassis is rotatably connected to the handle body, and characterized in that the handle positioning and anti-rotation mechanism comprises a locking block with a reset spring and a safety lock plate, wherein the locking block and the safety lock plate cooperate in two-position positioning. The operating handle can be operated by one person with one hand, satisfying the locking function of the handle. However, the locking function of the cabinet door is unreliable. If the padlock used is not standardized, it is likely that the padlock will not tilt up at the correct angle, causing the stopper to be unable to be in place, making it impossible to reliably lock the connecting square shaft. Even if the padlock is locked, there is a risk that the cabinet door can be opened to directly operate the switch on and off.

[0007] Chinese patent CN 209104018U discloses a circuit breaker manual operating mechanism handle, characterized by comprising an operating handle, a padlock device, and a locking shaft. The padlock device is pivotally mounted on the operating handle, with the front end of the padlock device connected to the locking shaft. The padlock device is connected to the operating handle via a first drive member. The rear end of the padlock device is engaged with the locking mechanism, and the rear end of the padlock device is provided with a padlock hole, which is obscured by the operating handle. When the circuit breaker is in the open state, the locking mechanism is unlocked, and the first drive member causes the front end of the padlock device to sink, driving the locking shaft to lock the operating handle, while simultaneously causing the rear end of the padlock device to tilt, allowing the padlock hole to disengage from the operating handle. However, this operating mechanism handle only provides reliable locking of the handle, but not reliable locking of the cabinet door. This poses a safety risk to maintenance personnel, increases the number of parts, and leads to increased costs. Summary of the Invention

[0008] The purpose of the present invention is to address the technical defects of the existing switch cabinet operating handle, such as insufficient padlock reliability, high safety risks, and high component costs, and to provide a circuit breaker handle padlock structure that is easy to operate, and the locking position is independent of manual operation and lock specifications. It can be achieved by simply improving the shape of existing parts to control the movement trajectory of the padlock component, and the padlock function is safe and reliable.

[0009] Technical Solution

[0010] To achieve the above technical objectives, the present invention provides a circuit breaker handle padlock structure, comprising a handle, a padlock member mounted in a mounting slot on the handle and rotatable about a rotation center. When the padlock member is rotated out of the mounting slot, the padlock member can be padlocked using a padlock hole provided therein. The padlock member is linked to a stop member, and is characterized in that the padlock member and the stop member are linked via a motion trajectory control body. During counterclockwise rotation of the padlock member about the rotation center, the first characteristic portion of the motion trajectory control body first drives the stop member to overcome the restoring force of an elastic element, driving a slide plate to slide and thereby locking the connecting square shaft. Then, the second characteristic portion of the motion trajectory control body causes the stop member to overcome the restoring force of the elastic element and thereby achieve mutual self-locking.

[0011] During the clockwise rotation of the padlock around the rotation center, the stopper, under the action of the restoring force of the elastic element, utilizes the characteristic portion 1 of the motion trajectory control body to drive the padlock to automatically fall back into place and release the lock on the connecting square shaft;

[0012] Furthermore, one end of the elastic element abuts against the motion trajectory control body, and the other end abuts against the base.

[0013] Furthermore, the rotation center is the axis center of the first axis in the installation groove, and the padlock is installed on the first axis and can rotate around the first axis;

[0014] Furthermore, the padlock is provided with a driving portion corresponding to the motion trajectory control body, the driving portion including a driving end and a self-locking arc surface connected to the driving end, the driving end corresponding to the characteristic portion and capable of driving the stopper to overcome the restoring force of the elastic element to drive the slide plate to slide and lock the connecting square shaft during the counterclockwise rotation of the padlock around the rotation center, or causing the stopper to drive the padlock to automatically fall back into place under the action of the restoring force of the elastic element and simultaneously release the lock on the connecting square shaft during the clockwise rotation of the padlock around the rotation center;

[0015] The self-locking arc surface corresponds to the second characteristic portion so that the stopper overcomes the resetting force of the elastic element and realizes mutual self-locking with the padlock;

[0016] Furthermore, the first characteristic portion is connected to the second characteristic portion, and the connection point corresponds to the position where the padlock component is rotated out of the installation slot.

[0017] Furthermore, the self-locking arc surface and the second characteristic portion are two corresponding arc surfaces with the same diameter.

[0018] Furthermore, the motion trajectory control body is fixedly connected to the stopper or is integrated with the stopper.

[0019] Furthermore, the elastic element is sleeved on the stopper.

[0020] Furthermore, the stopper is installed in the vertical slide groove of the base, and the slide plate is installed in the horizontal slide groove of the base. The stopper moves back and forth in the vertical slide groove, driving the slide plate to move back and forth in the horizontal slide groove, thereby locking or unlocking the connecting square shaft.

[0021] Furthermore, a cantilever is provided on the left side of the padlock component located at the rotation center, and the padlock component can be rotated counterclockwise out of the installation slot and out of the padlock hole by pressing the cantilever.

[0022] Furthermore, a plurality of padlock holes are provided on the right side end of the padlock member located at the rotation center.

[0023] Furthermore, the driving part is located on the left side of the rotation center.

[0024] Furthermore, the handle and the base are connected together.

[0025] Beneficial effects

[0026] The present invention provides a circuit breaker handle padlock structure. A motion trajectory control body is provided between a padlock member and a stop member according to motion trajectory requirements. The stop member can move into position when the padlock member just appears in a padlock hole, preventing the connecting square shaft from being pulled out and reliably locking the connecting square shaft. At the same time, the handle cannot be rotated.

[0027] At the same time, a cantilever is provided at one end of the padlock. By pressing the cantilever, the padlock can be tilted up to reveal the padlock hole. The padlock continues to rotate until all the padlock holes are visible. During this process, the padlock can be stopped at will, and the stopper remains stationary. In other words, as long as the lock is engaged, the stopper can remain stationary regardless of the size of the locking rod. Remove the padlock and manually push the padlock back until the padlock hole disappears. The padlock automatically falls back into place, and the connecting square shaft can be freely moved in and out. The entire structure is easy to operate, and the locking position is independent of manual operation or the specifications of the lock. This can be achieved by simply modifying the shape of the existing parts to control the movement trajectory of the padlock. The padlock function is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a product diagram of an embodiment of the present invention.

[0029] Figure 2 Schematic diagram of the structure of an embodiment of the present invention.

[0030] Figure 3 This is a structural diagram of an unlocked state according to an embodiment of the present invention.

[0031] Figure 4 This is a product diagram of a padlock component in an embodiment of the present invention.

[0032] Figure 5 This is a product diagram of a stopper in an embodiment of the present invention.

[0033] Figure 6 This is a structural schematic diagram of a state in which the stopper moves into position and the padlock hole is just exposed in an embodiment of the present invention.

[0034] Figure 7 Schematic diagram of the structure after the stopper moves into place in an embodiment of the present invention.

[0035] Figure 8 The working principle of the embodiment of the present invention Figure 1 .

[0036] Figure 9 The working principle of the embodiment of the present invention Figure 2 . DETAILED DESCRIPTION

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0038] As attached Figure 1 and 2 As shown, a circuit breaker handle padlock structure includes a handle 1, wherein the handle 1 and the base 7 are connected together. Figure 3 4 and 5, the padlock 2 is mounted in the mounting groove 101 on the handle 1 and can rotate around the rotation center o. In this embodiment, the rotation center o is the axial center of the axis 101a in the mounting groove 101, and the padlock 2 is mounted on the axis 101a and can rotate around the axis 101a;

[0039] As attached Figure 3 and 5 As shown, when the padlock 2 is rotated out of the mounting slot 101, it can be padlocked using the padlock hole 201 provided thereon. The padlock 2 is linked to the stopper 3, wherein the padlock 2 and the stopper 3 are linked via a motion trajectory control body a. In this embodiment, the motion trajectory control body a and the stopper 3 are fixedly connected or integral. The motion trajectory control body a includes a first feature a1 and a second feature a2, wherein the first feature a1 and the second feature a2 are connected, and the connection b corresponds to the position where the padlock 2 is rotated out of the mounting slot 101.

[0040] As attached Figure 3 and 4 As shown, the padlock 2 is provided with a driving portion 2a corresponding to the motion trajectory control body a. In this embodiment, the driving portion 2a is located on the left side of the rotation center o.

[0041] As attached Figure 3As shown in Figures 8 and 9, the driving portion 2a includes a driving end 2a01 and a self-locking arc surface 2a02 connected to the driving end 2a01. The driving end 2a01 corresponds to the characteristic portion 1 a1 and can drive the stopper 3 to overcome the restoring force of the elastic element 4 and drive the slide 5 to slide and lock the connecting square shaft 6 during the counterclockwise rotation of the padlock 2 around the rotation center o, or can cause the stopper 3 to automatically return to its position under the restoring force of the elastic element 4 and release the lock on the connecting square shaft 6 during the clockwise rotation of the padlock 2 around the rotation center o. The self-locking arc surface 2a02 corresponds to the characteristic portion 2 a2, allowing the stopper 3 to overcome the restoring force of the elastic element 4 and achieve mutual self-locking with the padlock 2. In this embodiment, the elastic element 1 is preferably a compression spring. The self-locking arc surface 2a02 and the characteristic portion 2 a2 are two corresponding circular arc surfaces with the same diameter. Specifically, the stopper 3 is installed in the vertical slide groove 7a of the base 7, and the slide plate 5 is installed in the horizontal slide groove 7b of the base 7. The stopper 3 moves back and forth in the vertical slide groove 7a, driving the slide plate 5 to move back and forth in the horizontal slide groove 7b, thereby locking or unlocking the connecting square shaft 6.

[0042] The padlock 2 is provided with a cantilever 202 on the left side of the rotation center o. By pressing the cantilever 202, the padlock 2 can be rotated counterclockwise out of the installation slot 101 to reveal the padlock hole 201. The padlock 2 is provided with a plurality of padlock holes 201 on the right side of the rotation center o.

[0043] In this embodiment, a motion trajectory control body is provided between the padlock 2 and the stopper 3 according to the motion trajectory requirements, as shown in the attached Figure 6 and 8 As shown, by pressing the cantilever 202, the padlock member 2 rotates counterclockwise around the rotation center o. When the padlock hole 201 just appears, the driving end 2a01 corresponds to the characteristic portion a1, driving the stop member 3 to move downward to overcome the reset force of the elastic element 4 and drive the slide plate 5 to slide to the left to lock the connecting square shaft 6, so that the connecting square shaft 6 cannot be pulled out, and the connecting square shaft 6 is reliably locked, and the handle 1 cannot be rotated.

[0044] As attached Figure 7 and 9 As shown, the padlock 2 continues to rotate until all the padlock holes 201 are visible. Since the self-locking arc surface 2a02 and the characteristic portion 2a2 are two corresponding arc surfaces with the same diameter, the stopper 3 overcomes the restoring force of the elastic element 4 and self-locks with the padlock 2. During this process, the padlock 2 can be stopped at will, and the stopper 3 also remains stationary. In other words, as long as the lock is engaged, the stopper 3 can remain stationary regardless of the size of the lock rod.

[0045] To remove the padlock, manually push back the padlock member 3 and rotate it clockwise until the padlock hole 201 disappears. The padlock member 2 automatically falls back into place under the reset force provided by the elastic element 4 through the stop member 3. The stop member 3 moves upward under the reset force provided by the elastic element 4. The slide plate 5 slides to the right under the action of the reset spring connected to it (not shown in the drawings). The connecting square shaft 6 is unlocked and can be entered and exited at will.

[0046] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A circuit breaker handle padlock structure, comprising a handle (1), a padlock member (2) mounted in a mounting groove (101) on the handle (1) and rotatable about a rotation center (o), wherein when the padlock member (2) is rotated out of the mounting groove (101), a padlock hole (201) provided thereon can be utilized to achieve padlocking, the padlock member (2) being linked to a stop member (3), and characterized in that: The padlock (2) and the stopper (3) are linked via a motion track control body (a). During the counterclockwise rotation of the padlock (2) around the rotation center (o), first, the first characteristic portion (a1) of the motion track control body (a) drives the stopper (3) to overcome the reset force of the elastic element (4) and drive the slide plate (5) to slide to lock the connecting square shaft (6). Then, the second characteristic portion (a2) of the motion track control body (a) causes the stopper to overcome the reset force of the elastic element (4) to achieve mutual self-locking. During the clockwise rotation of the padlock (2) around the rotation center (o), the stopper (3) drives the padlock (2) to automatically fall back to its original position by utilizing the characteristic portion (a1) of the motion trajectory control body (a) under the action of the resetting force of the elastic element (4) and simultaneously releases the lock on the connecting square shaft (6); The padlock (2) is provided with a driving portion (2a) corresponding to the motion trajectory control body (a); the driving portion (2a) includes a driving end (2a01) and a self-locking arc surface (2a02) connected to the driving end (2a01); the self-locking arc surface (2a02) corresponds to the second characteristic portion (a2), so that the stopper (3) overcomes the reset force of the elastic element (4) and realizes mutual self-locking with the padlock (2).

2. A circuit breaker handle padlock structure according to claim 1, characterized in that: One end of the elastic element (4) abuts against the motion trajectory control body (a), and the other end abuts against the base (7).

3. The circuit breaker handle padlock structure according to claim 1, characterized in that: The rotation center (o) is the axis center of the axis 1 (101a) in the installation groove (101), and the padlock component (2) is installed on the axis 1 (101a) and can rotate around the axis 1 (101a).

4. A circuit breaker handle padlock structure according to claim 1, characterized in that: The driving end (2a01) corresponds to the characteristic portion (a1) and can drive the stopper (3) to overcome the reset force of the elastic element (4) and drive the slide plate (5) to slide and lock the connecting square shaft (6) when the padlock (2) rotates counterclockwise around the rotation center (o); or can drive the stopper (3) to automatically return to its original position under the reset force of the elastic element (4) and release the lock on the connecting square shaft (6) when the padlock (2) rotates clockwise around the rotation center (o).

5. The circuit breaker handle padlock structure according to claim 1, characterized in that: The characteristic portion 1 (a1) is connected to the characteristic portion 2 (a2), and the connection point (b) corresponds to the position where the padlock (2) is rotated out of the installation groove (101).

6. A circuit breaker handle padlock structure according to claim 4, characterized in that: The self-locking arc surface (2a02) and the second characteristic portion (a2) are two corresponding arc surfaces with the same diameter.

7. The circuit breaker handle padlock structure according to claim 1, characterized in that: The motion trajectory control body (a) is fixedly connected to the stopper (3) or is integral with it.

8. The circuit breaker handle padlock structure according to claim 1, characterized in that: The elastic element (4) is sleeved on the stopper (3).

9. The circuit breaker handle padlock structure according to claim 1, characterized in that: The stopper (3) is installed in the vertical slide groove (7a) of the base (7), and the slide plate (5) is installed in the horizontal slide groove (7b) of the base (7). The stopper (3) moves back and forth in the vertical slide groove (7a), driving the slide plate (5) to move back and forth in the horizontal slide groove (7b), thereby locking or unlocking the connecting square shaft (6).

10. The circuit breaker handle padlock structure according to claim 1, characterized in that: The padlock (2) is provided with a cantilever (202) at the left end of the rotation center (o), and by pressing the cantilever (202), the padlock (2) can be rotated counterclockwise out of the installation slot (101) to leak out of the padlock hole (201).

11. The circuit breaker handle padlock structure according to claim 1, characterized in that: The padlock component (2) is provided with a plurality of padlock holes (201) at the right end of the rotation center (o).

12. The circuit breaker handle padlock structure according to claim 4, characterized in that: The driving part (2a) is located on the left side of the rotation center (o).

13. The circuit breaker handle padlock structure according to claim 1, characterized in that: The handle (1) and the base (7) are connected together.

Images