An out-of-cabinet handle locking device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DELIXI ELECTRIC
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-19
AI Technical Summary
The existing cabinet external handle locking device is inconvenient to operate when padding and poses a risk of misoperation, which may lead to electrical accidents.
A locking device is designed, comprising a fixed base, a rotating handle, a guide rod, a slider, and a reset device. Through the cooperation of the slider and the guide rod, automatic hovering and locking are achieved, ensuring that the handle cannot be misoperated when it is in the open position.
It improves the convenience and safety of operation, and reduces electrical accidents caused by misoperation, such as electric shock and short circuit caused by accidental closing of the circuit breaker.
Smart Images
Figure CN224384124U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical switch technology, and in particular to an external handle locking device for cabinets. Background Technology
[0002] On electrical switchgear, the external handle serves as a convenient means of opening the door. A circuit breaker is an electrical switching device capable of closing, carrying, and interrupting current under normal circuit conditions, and capable of closing, carrying, and interrupting current under abnormal circuit conditions within a specified time. The circuit breaker achieves its power-on and power-off functions by operating its handle. During the use of circuit breakers, to prevent accidental misoperation that could affect power supply or interruption, or endanger personnel safety during maintenance and lead to unforeseen consequences, maintaining the circuit breaker handle in its correct position is crucial to prevent accidental operation.
[0003] The existing circuit breaker external handle locking device requires the handle to be fixed while the locking operation is being performed, which makes the operation inconvenient and may lead to misoperation.
[0004] Therefore, an external handle locking device is provided, which can automatically stop when the slider is in the padlock position, making operation more convenient and reliable. Utility Model Content
[0005] This application provides an external handle locking device to solve the problem of inconvenient operation of current padlocks, achieving automatic hovering and making padlock operation more convenient.
[0006] In a first aspect, this application provides an external handle locking device, comprising: a fixed base and a rotating handle portion, the rotating handle portion being rotatable relative to the fixed base to switch between an electrical switch closed and an open position; a guide rod is provided inside the rotating handle portion, and a turntable hole is provided on the fixed base corresponding to the position of the guide rod, the guide rod being able to move up and down in a direction perpendicular to the fixed base, so that the guide rod can leave or extend into the turntable hole; a slider, the slider being slidably disposed on the rotating handle portion and restricted by a limiting device on a first plane, being able to slide from a first position to a second position; when the slider is in the first position, the guide rod is completely away from the turntable hole, and the rotating handle can rotate freely to the unlocked state; when the slider slides to the second position, part of the guide rod extends into the turntable hole, so that the rotating handle portion is engaged and fixed with the fixed base to the open position; a reset device is provided on the guide rod, the reset device being used to apply a reset force to the guide rod, the reset force being used to move the guide rod to the state of leaving the turntable hole, when the slider is in the second position, under the combined action of the reset device and the limiting device, the guide rod and the slider are subjected to force balance, so that the slider is maintained in the second position.
[0007] Through the above scheme, the slider and guide rod work together to lock the handle in the open position. When the slider leaves the first position, the guide rod extends into the rotary table hole, locking the handle to the fixed base and keeping it in the open position. This effectively prevents the electrical switch from being accidentally operated at inappropriate times, avoiding electrical accidents caused by misoperation, such as electric shock or short circuits caused by accidental closing. Operators can unlock and lock the handle simply by sliding the slider. When the electrical switch needs to be operated, the slider is slid to the first position, the guide rod leaves the rotary table hole, and the handle can rotate freely. When the handle needs to be locked, the slider is slid to the second position, the guide rod extends into the rotary table hole, and the handle is locked. Furthermore, when held in the open position, a padlock operation can be performed to further ensure the stability of the handle lock, preventing the handle from closing. In the second position, the guide rod is subjected to an upward force under the action of the reset device, which is transmitted to the slider as an upward force. Since the slider is fixed to the rotating handle under the restriction of the limiting device, the limiting device applies a downward force to the slider, which in turn transmits a downward force to the guide rod. At this time, the guide rod and the slider are in equilibrium and remain relatively stationary, thus achieving hovering.
[0008] In one possible design, the top surface of the guide rod and the bottom surface of the slider are opposite each other. The top surface of the guide rod has a first slide surface and a second slide surface. The first slide surface is an inclined surface and the second slide surface is a plane. When the slider slides from the first slide surface to the second slide surface, it pushes the guide rod downward so that part of the guide rod extends into the turntable hole.
[0009] Through the above scheme, the design of the first slide surface (sloping surface) allows the slider to smoothly push the guide rod downwards during sliding. This sloping guide mechanism ensures that the guide rod can accurately insert into the turntable hole, thereby achieving reliable locking. The guiding effect of the sloping surface reduces the possibility of insecure locking due to improper operation or component wear. The second slide surface (flat surface) provides stable support for the slider, ensuring that the slider can stably maintain the locked position in the second position. This design makes the padlock state more reliable and reduces the risk of accidental unlocking due to external forces or other factors. The sloping surface design allows for a smooth transition of the slider from the first position to the second position, reducing the feeling of jerkiness during operation. Operators can more easily switch the slider from the unlocked state to the padlock state, improving the smoothness of operation. The sloping surface design reduces the friction between the slider and the guide rod during slider sliding, making it easier for operators to apply less force when switching states. This design not only improves the convenience of operation but also reduces component wear that may occur during long-term operation. Through the cooperation of the slider and the guide rod, when the slider leaves the first position, the guide rod extends into the rotary table hole. After the guide rod extends into the rotary table hole, it can lock the rotating handle part into the fixed base, keeping the handle in the open position. This can effectively prevent the electrical switch from being operated at an inappropriate time, avoiding electrical accidents caused by misoperation, such as electric shock, short circuit, and other dangerous situations caused by accidental closing.
[0010] In one possible design, the first slide surface is positioned at the bottom of the slider as the third slide surface, and the second slide surface is positioned at the bottom of the slider as the fourth slide surface. The third slide surface is an inclined plane, and the second slide surface is a flat plane.
[0011] Through the above design, the third slide surface (sloping surface) allows the slider to smoothly push the guide rod downwards during sliding. This sloping guide mechanism ensures that the guide rod can accurately insert into the turntable hole, thus achieving reliable locking. The guiding effect of the sloping surface reduces the possibility of insecure locking due to improper operation or component wear. The fourth slide surface (flat surface) provides stable support for the guide rod, ensuring that the guide rod can stably maintain the locked position in the second position. This design makes the padlock state more reliable and reduces the risk of accidental unlocking due to external forces or other factors. The sloping surface design reduces the friction between the slider and the guide rod during slider sliding, requiring less force from the operator when switching states. This design not only improves the convenience of operation but also reduces component wear that may occur during long-term operation.
[0012] In one possible design, a first transition surface is provided between the first slide surface and the second slide surface; and a second transition surface is provided between the third slide surface and the fourth slide surface.
[0013] Through the above scheme, the design of the first and second transition surfaces further optimizes the mechanical fit between the slider and the guide rod, enabling the slider to more precisely control the movement of the guide rod during sliding. This design not only improves the reliability of locking and unlocking but also reduces fit errors caused by component wear. The transition surface design reduces friction and impact between the slider and the guide rod, thereby extending the service life of the components. This design not only reduces maintenance costs but also improves the reliability and durability of the device.
[0014] In one possible design, the rotating handle includes a rotating base concentrically disposed with the fixed base and a hand-held part fixedly connected to the end of the rotating base away from the fixed base, with a slider slidably disposed at the end of the rotating base away from the fixed base.
[0015] Through the above design, the rotating base and the fixed base are concentrically positioned, ensuring that the rotating handle maintains precise center alignment throughout rotation. This design reduces operational difficulties or insecure locking caused by eccentricity, improving the reliability and stability of the device. The handheld part is fixedly connected to the rotating base, providing a comfortable grip for the operator. This design allows the operator to rotate the rotating handle more easily, improving operational convenience and comfort. The slider is located at the end of the rotating base furthest from the fixed base, that is, at the end where the handheld part is located. This makes it easier for the operator to unlock and lock the slider. This design reduces operational inconvenience and improves operational smoothness. The rational design of the handheld part and the slider allows the operator to intuitively feel the state transitions during operation, providing clear operational feedback. This design improves operational intuitiveness and user experience.
[0016] In one possible design, the limiting device is a slotted pin, which is fixed to the rotating seat and placed horizontally on the rotating seat in a direction perpendicular to the sliding trajectory of the slider. The slider is provided with a guide groove, through which the slotted pin passes. The slider slides relative to the rotating seat under the constraint of the slotted pin and the guide groove.
[0017] Through the above scheme, the cooperation between the slotted pin and the guide rail groove ensures that the slider slides along the predetermined trajectory, preventing the slider from deviating or wobbling during sliding. This design improves the accuracy of slider sliding and ensures the reliability of locking and unlocking operations. The restriction provided by the slotted pin and guide rail groove makes the slider sliding more stable, reducing the problem of inaccurate slider position caused by improper operation and improving the overall performance of the device. The cooperation between the slotted pin and guide rail groove ensures that the slider can only slide along the predetermined trajectory, ensuring that the guide rod only extends into the turntable hole when the slider is in the second position, locking the rotating handle part against the fixed base and keeping the handle in the open position. This effectively prevents the electrical switch from being misoperated at inappropriate times, avoiding electrical accidents caused by misoperation, such as electric shock, short circuits, and other dangerous situations caused by accidental closing.
[0018] In one possible design, a locking hole is provided on the rotating handle, located behind the slotted pin. When the slider is in the second position, the locking hole is exposed for padlocking.
[0019] With the above-described design, when the slider is in the second position, the guide rod extends into the turntable hole to achieve mechanical locking, while the lock hole is exposed, allowing for further locking with a padlock. This dual locking mechanism significantly enhances the device's security, preventing unauthorized operation. The lock prevents accidental unlocking due to external force or misoperation, ensuring that the electrical switch will not be misoperated in the padlocked state, thus avoiding potential electrical accidents. The lock hole's location is rationally designed, situated behind the slot pin, allowing the operator to easily insert the padlock into the lock hole for further locking when the slider is in the second position. This design improves operational convenience. Furthermore, because the slider remains stable in the second position without any external force, it frees up the hands, allowing for simultaneous padlock operation with both hands, further enhancing operational convenience.
[0020] In one possible design, a guide hole is provided inside the rotating handle, the direction of which is perpendicular to the fixed base. A guide rod is disposed inside the guide hole and can move up and down along the guide hole in a direction perpendicular to the fixed base. When the rotating handle is in the open position, the turntable hole corresponds to the guide hole, and the guide rod can move away from or into the turntable hole when it moves up and down along the guide hole in a direction perpendicular to the fixed base.
[0021] The above design ensures that the guide rod can move precisely up and down in the direction perpendicular to the fixed base, preventing skewing or wobbling during movement. This precise movement control improves the reliability of locking and unlocking operations. The guide hole allows the guide rod to accurately enter or exit the rotary table hole, reducing problems such as insecure locking or incomplete unlocking caused by improper operation or component wear. Through the cooperation of the guide hole and the rotary table hole, the guide rod can only enter the rotary table hole when the rotating handle is in the open position, locking the rotating handle to the fixed base. This effectively prevents the electrical switch from being misoperated at inappropriate times, avoiding electrical accidents caused by misoperation, such as electric shock or short circuits caused by accidental closing.
[0022] In one possible design, the reset device is a spring, which is sleeved on the outer periphery of the guide rod. A first protrusion is provided in the guide hole, and the end of the spring facing the fixed base abuts against the first protrusion. A second protrusion is provided on the guide rod, and the other end of the spring facing the slider abuts against the second protrusion. When the slider slides to the second position, part of the guide rod extends into the turntable hole. The first end of the spring remains in the same position, and the second end of the spring moves down with the guide rod, causing the spring to be compressed. The reaction force of the spring on the guide rod causes the guide rod to press against the slider, keeping the slider in the second position.
[0023] In the above design, the reset device is a spring. The first protrusion is on the guide hole, and the second protrusion is on the guide rod. That is, one end of the spring rests against the rotating handle, and the other end rests against the guide rod. Thus, when the guide rod is pushed downwards by the slider and extends into the turntable hole, the spring generates a reaction force. This reaction force allows the guide rod to stably hold the slider, ensuring that the slider reliably remains in the locked position in the second position. This design improves the stability of the padlock and reduces the risk of accidental unlocking due to external force or misoperation.
[0024] In one possible design, a sealing ring is provided between the portion of the guide rod that can extend into the turntable hole and the first protrusion, and the sealing ring can achieve a seal between the guide hole and the guide rod.
[0025] Through the above design, the sealing ring effectively prevents dust, moisture, and other impurities from entering the gap between the guide hole and the guide rod. This sealing protection improves the reliability of the device in harsh environments and reduces malfunctions caused by dust or moisture intrusion. Furthermore, the contact between the sealing ring and the guide hole creates friction; the sealing ring design enhances the stability of the guide rod in the padlock state, reducing the risk of accidental unlocking due to external forces or environmental factors, further strengthening the device's security.
[0026] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description
[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0028] Figure 1 This is a schematic diagram of an external handle locking device provided in one embodiment of this application.
[0029] Figure 2 This is a schematic diagram of the cooperation structure of the slider and guide rod provided in one embodiment of this application.
[0030] Figure 3 This is a schematic diagram of the slider in a first position according to an embodiment of this application.
[0031] Figure 4 This is a schematic diagram of the slider in the second position according to one embodiment of this application.
[0032] Figure 5 This is a schematic diagram of the structure of the guide rod provided in one embodiment of this application.
[0033] Figure 6 This is a schematic diagram of the slider provided in one embodiment of this application.
[0034] Explanation of reference numerals in the attached figures:
[0035] 100. External handle locking device; 110. Fixed base; 111. Turntable hole; 120. Rotating handle part; 121. Guide hole; 122. First protrusion; 130. Lock hole; 200. Slider; 201. Mounting window; 210. Guide rail groove; 211. Third slide surface; 212. Fourth slide surface; 300. Guide rod; 310. First slide surface; 320. Second slide surface; 330. Second protrusion; 400. Reset device; 500. Groove pin; First direction x; Second direction y; Third direction z. Detailed Implementation
[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0037] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.
[0038] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0039] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists, A and B exist simultaneously, or B exists. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.
[0040] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0041] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.
[0042] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).
[0043] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by a partition, such as a connection fixed by screws, bolts, or other partitions; a physical connection can also be a detachable connection, such as a snap-fit or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0044] As can be seen from the background technology, current cabinet external handle locking devices require one hand to hold the handle while the other hand is used to perform the padding operation, which makes the operation inconvenient. Furthermore, the hand holding the handle may accidentally loosen, causing the padding to fail and resulting in misoperation.
[0045] In view of this, this application provides an external handle locking device, including a fixed base and a rotating handle. The rotating handle can rotate relative to the fixed base to switch between the closed and open positions of the electrical switch. A guide rod is provided inside the rotating handle, and a turntable hole is provided on the fixed base corresponding to the position of the guide rod. The guide rod can move up and down in a direction perpendicular to the fixed base so that the guide rod can leave or enter the turntable hole. A slider is slidably disposed on the rotating handle and can slide from a first position to a second position. When the slider is in the first position, the guide rod is completely away from the turntable hole, and the rotating handle can rotate freely to the unlocked state. When the slider slides to the second position... In the second position, part of the guide rod extends into the turntable hole, locking the rotating handle to the fixed base for the open position. A reset device is installed on the guide rod, applying a reset force to return it to the first position. Since the slider can only slide horizontally and is fixed vertically, returning the guide rod to the first position causes it to press towards the slider. Simultaneously, when the slider is in the second position, it is subject to a limiting force that pulls it downwards. Therefore, under the combined action of the reset and limiting devices, the guide rod and slider are balanced, maintaining the slider in the second position. When locking the handle, the slider is slid to the second position, the guide rod extends into the turntable hole, and the handle is locked. The reset device allows the guide rod to automatically press the slider when it is in the second position, helping the operator more easily maintain the slider in the locked position, reducing the effort and difficulty of manual operation, and further improving operational convenience.
[0046] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
[0047] Figure 1 This is a schematic diagram of the cabinet external handle locking device provided in this embodiment. Figure 2 This is a schematic diagram of the cooperation structure between the slider and the guide rod provided in this embodiment. Figure 3 This is a schematic diagram of the slider in the first position provided in this embodiment. Figure 4 This is a schematic diagram of the slider in the second position provided in this embodiment. Please refer to... Figures 1 to 4 The cabinet external handle locking device 100 in this embodiment includes: a fixed base 110, a rotating handle part 120, a slider 200, a guide rod 300, and a reset device 400.
[0048] The external handle locking device 100 is installed on the electrical switchgear and is used to control at least one switch unit inside the electrical switchgear to switch between open and closed states. For example, a circuit breaker is located inside the electrical switchgear.
[0049] The fixed base 110 is fixed to the surface of the electrical switch cabinet. The rotating handle 120 can rotate relative to the fixed base 110 to switch between the closed and open positions of the electrical switch.
[0050] The guide rod 300 is located inside the rotating handle part 120. Corresponding to the position of the guide rod 300, the guide rod 300 can move up and down in a direction perpendicular to the fixed base 110. A turntable hole 111 is provided on the fixed base 110 so that the guide rod 300 can leave or extend into the turntable hole 111.
[0051] When the guide rod 300 is inserted into the turntable hole 111, the rotating handle part 120 cannot continue to rotate, and therefore is in the padlock state.
[0052] It is understandable that when the rotary handle is in the open position, i.e., when the switch unit is in the open state, the guide rod 300 and the rotary hole 111 can correspond, and the guide rod 300 can extend into the rotary hole 111. When the rotary handle is in the closed position, i.e., when the switch unit is in the closed state, the guide rod 300 and the rotary hole 111 are in a relative rotational relationship, and the guide rod 300 cannot extend into the rotary hole 111, thus preventing subsequent operations from being completed. Therefore, the rotary hole 111 is positioned such that when the rotary handle is in the open position, it corresponds to the projection position of the guide rod 300 on the fixed base 110.
[0053] In this embodiment, a guide hole 121 is provided in the rotating handle part 120. The direction of the guide hole 121 is perpendicular to the fixed base 110. The guide rod 300 is disposed in the guide hole 121 and can move up and down along the guide hole 121 in a direction perpendicular to the fixed base 110.
[0054] When the handle 120 is in the open position, the turntable hole 111 corresponds to the guide hole 121. When the guide rod 300 moves up and down along the guide hole 121 in a direction perpendicular to the fixed base 110, it can leave or extend into the turntable hole 111.
[0055] The design of the guide hole 121 ensures that the guide rod 300 can move precisely up and down in the direction perpendicular to the fixed base 110, preventing the guide rod 300 from tilting or wobbling during movement. This precise movement control improves the reliability of locking and unlocking operations. The guiding effect of the guide hole 121 allows the guide rod 300 to accurately enter or leave the rotary hole 111, reducing problems such as insecure locking or incomplete unlocking caused by improper operation or component wear. Through the cooperation of the guide hole 121 and the rotary hole 111, the guide rod 300 can only enter the rotary hole 111 when the rotating handle part 120 is in the open position, locking the rotating handle part 120 and the fixed base 110 in place. This effectively prevents the electrical switch from being misoperated at inappropriate times, avoiding electrical accidents caused by misoperation, such as electric shock, short circuit, and other dangerous situations caused by accidental closing.
[0056] Please continue to combine Figure 3 and Figure 4 The slider 200 is slidably disposed on the rotating handle portion 120 and is restricted by the limiting device to slide on the first plane from the first position to the second position.
[0057] Please refer to Figure 3 and Figure 4 The first plane is horizontal. When the guide rod 300 moves up and down (y-direction), the slider slides on the first plane, that is, the slider slides on the horizontal plane (the plane containing x and y).
[0058] When the slider 200 is in the first position, the guide rod 300 is completely away from the turntable hole 111, and the handle can be rotated freely to the unlocked state.
[0059] When the slider 200 slides to the second position, part of the guide rod 300 extends into the turntable hole 111, so that the rotating handle part 120 is engaged and fixed with the fixed base 110 to the open state, that is, the state in which the padlock can be performed.
[0060] It is understandable that the circuit breaker is in two positions: open and closed, controlled by the external handle. The padlock prevents the product from closing when the handle is in the open position and the guide rod is inserted into the turntable hole 111, preventing the handle from turning.
[0061] The reset device 400 is connected to the guide rod 300. The reset device 400 is used to apply a reset force to the guide rod 300, which is used to return the guide rod 300 to the first position. Since the slider 200 can only slide in the horizontal direction and is fixed in the vertical direction, when the guide rod 300 is returned to the first position, it will press the guide rod 300 towards the slider 200. At the same time, when the slider is in the second position, the slider 200 will be subject to the limiting force of the limiting device. The direction of the limiting force is downward. Therefore, under the combined action of the reset device and the limiting device, the guide rod 300 and the slider 200 are balanced, so that the slider 200 is maintained in the second position.
[0062] Through the above scheme, the slider 200 and guide rod 300 work together so that the guide rod 300 will only extend into the rotary hole 111 when the slider 200 is in the second position, locking the rotating handle 120 into the fixed base 110 and keeping the handle in the open position. This effectively prevents the electrical switch from being operated at an inappropriate time, avoiding electrical accidents caused by misoperation, such as electric shock or short circuits caused by accidental closing. The operator can unlock and lock the handle simply by sliding the slider 200. When it is necessary to operate the electrical switch, slide the slider 200 to the first position, the guide rod 300 leaves the rotary hole 111, and the handle can rotate freely; when it is necessary to lock the handle, slide the slider 200 to the second position, the guide rod 300 extends into the rotary hole 111, and the handle is locked. The presence of the reset device 400 allows the guide rod 300 to automatically press the slider 200 when the slider 200 is in the second position, helping the operator to more easily maintain the slider 200 in the locked position, reducing the force and difficulty of manual operation, and further improving the convenience of operation.
[0063] Figure 5 This is a structural schematic diagram of the guide rod 300 provided in this embodiment. Please refer to... Figure 5 In this embodiment, the top surface of the guide rod 300 and the bottom surface of the slider 200 are opposite each other. The top surface of the guide rod 300 has a first slide surface 310 and a second slide surface 320. The first slide surface 310 is an inclined surface and the second slide surface 320 is a plane. When the slider 200 slides from the first slide surface 310 to the second slide surface 320, it pushes the guide rod 300 downward so that part of the guide rod 300 extends into the turntable hole 111.
[0064] Through the above scheme, the design of the first slide surface 310 (sloping surface) allows the slider 200 to smoothly push the guide rod 300 downward during sliding. This sloping guide mechanism ensures that the guide rod 300 can accurately insert into the turntable hole 111, thereby achieving reliable locking. The guiding effect of the sloping surface reduces the possibility of insecure locking due to improper operation or component wear. The second slide surface 320 (flat surface) provides stable support for the slider 200, ensuring that the slider 200 can stably maintain the locked position in the second position. This design makes the padlock state more reliable and reduces the risk of accidental unlocking due to external forces or other factors. The sloping surface design allows the slider 200 to smoothly transition from the first position to the second position, reducing the feeling of jerkiness during operation. Operators can more easily switch the slider 200 from the unlocked state to the padlock state, improving the smoothness of operation. The sloping surface design reduces the friction between the slider 200 and the guide rod 300 during the sliding process, making it easier for operators to apply less force when switching states. This design not only improves operational convenience but also reduces component wear that may result from prolonged operation. Through the cooperation of the slider 200 and the guide rod 300, the guide rod 300 only extends into the turntable hole 111 when the slider 200 is in the second position, engaging and securing the rotating handle 120 to the fixed base 110, thus keeping the handle in the open position. This effectively prevents the electrical switch from being misoperated at inappropriate times, avoiding electrical accidents caused by misoperation, such as electric shock or short circuits resulting from accidental closing.
[0065] In this embodiment, the slider 200 can move along a fixed direction on the rotating handle 120. During the movement, it cooperates with the guide rod 300 to push the guide rod 300, so that the guide rod 300 moves downward and extends into the turntable hole 111 to switch to the padlock state.
[0066] Figure 6 This is a schematic diagram of the slider 200 provided in this embodiment. Please refer to it. Figure 6 In this embodiment, the first slide surface 310 is set to the bottom position of the slider 200 as the third slide surface 211, and the second slide surface 320 is set to the bottom position of the slider 200 as the fourth slide surface 212. The third slide surface 211 is an inclined surface, and the second slide surface 320 is a plane.
[0067] Through the above scheme, the design of the third slide surface 211 (sloping surface) allows the slider 200 to smoothly push the guide rod 300 downward during sliding. This sloping guide mechanism ensures that the guide rod 300 can accurately insert into the turntable hole 111, thereby achieving reliable locking. The guiding effect of the sloping surface reduces the possibility of insecure locking due to improper operation or component wear. The fourth slide surface 212 (flat surface) provides stable support for the guide rod 300, ensuring that the guide rod 300 can be stably maintained in the locked position in the second position. This design makes the padlock state more reliable and reduces the risk of accidental unlocking due to external forces or other factors. The sloping surface design reduces the friction between the slider 200 and the guide rod 300 during the sliding of the slider 200, making it easier for the operator to apply less force when switching states. This design not only improves the convenience of operation but also reduces component wear that may occur during long-term operation.
[0068] In this embodiment, a first transition surface is provided between the first slide surface 310 and the second slide surface 320; a second transition surface is provided between the third slide surface 211 and the fourth slide surface 212.
[0069] Through the above scheme, the design of the first and second transition surfaces further optimizes the mechanical fit between the slider 200 and the guide rod 300, enabling the slider 200 to more precisely control the movement of the guide rod 300 during sliding. This design not only improves the reliability of locking and unlocking but also reduces fit errors caused by component wear. The transition surface design reduces friction and impact between the slider 200 and the guide rod 300, thereby extending the service life of the components. This design not only reduces maintenance costs but also improves the reliability and durability of the device.
[0070] In this embodiment, the rotating handle part 120 includes a rotating seat concentrically disposed with the fixed base 110 and a hand-held part fixedly connected to the end of the rotating seat away from the fixed base 110, and the slider 200 is slidably disposed at the end of the rotating seat away from the fixed base 110.
[0071] The purpose of the handheld part is to make it easier for operators to hold and switch between the closed and open positions of the handle.
[0072] Through the above scheme, the rotating base and the fixed base 110 are concentrically arranged, ensuring that the rotating handle 120 maintains precise center alignment during rotation. This design reduces operational difficulties or insecure locking caused by eccentricity, improving the reliability and stability of the device. The handheld part is fixedly connected to the rotating base, providing a comfortable grip point for the operator. This design allows the operator to rotate the rotating handle 120 more easily, improving operational convenience and comfort. The slider 200 is located at the end of the rotating base away from the fixed base 110, that is, at the end where the handheld part is located. This makes it easier for the operator to perform unlocking and locking operations when operating the slider 200. This design reduces operational inconvenience and improves operational smoothness. The rational design of the handheld part and the slider 200 allows the operator to intuitively feel the state transition during operation, providing clear operational feedback. This design improves the intuitiveness of operation and user experience.
[0073] In this embodiment, a slotted pin 500 is fixed on the rotating seat. The slotted pin 500 is placed horizontally on the rotating seat in a direction perpendicular to the sliding trajectory of the slider 200. A guide groove 210 is provided on the slider 200. The slotted pin 500 passes through the guide groove 210. The slider 200 slides relative to the rotating seat under the cooperation and restriction of the slotted pin 500 and the guide groove 210.
[0074] Please continue to refer to this. Figure 3 and Figure 4 The first direction x is the direction of the sliding trajectory of the slider 200 (the first direction x is on the first plane), the second direction y is the direction of the guide rod 300 moving up and down, and the third direction z is the direction in which the slotted pin 500 is placed horizontally on the rotating seat (the third direction z is on the first plane and perpendicular to the first direction x).
[0075] In this embodiment, the handle is elongated and fixed to the rotating base to form a "T" shape. The extension direction of the handle is consistent with the sliding trajectory of the slider 200, that is, the handle extends along the first direction x.
[0076] Through the above scheme, the cooperation between the slot pin 500 and the guide rail groove 210 ensures that the slider 200 slides along the predetermined trajectory, avoiding deviation or wobbling of the slider 200 during sliding. This design improves the accuracy of the slider 200's sliding and ensures the reliability of locking and unlocking operations. The restriction provided by the slot pin 500 and the guide rail groove 210 makes the sliding of the slider 200 more stable, reducing the problem of inaccurate slider 200 position due to improper operation and improving the overall performance of the device. Through the cooperation of the slot pin 500 and the guide rail groove 210, the slider 200 can only slide along the predetermined trajectory, ensuring that the guide rod 300 will only extend into the turntable hole 111 when the slider 200 is in the second position, engaging and fixing the rotating handle part 120 with the fixed base 110, keeping the handle in the open position. This effectively prevents the electrical switch from being misoperated at inappropriate times, avoiding electrical accidents caused by misoperation, such as electric shock, short circuits, and other dangerous situations caused by accidental closing.
[0077] Please refer to Figure 4 In this embodiment, a locking hole 130 is provided on the rotating handle part 120. The locking hole 130 is located behind the slot pin 500. When the slider 200 is in the second position, the locking hole 130 is exposed and used for padlock.
[0078] With the above scheme, when the slider 200 is in the second position, the guide rod 300 extends into the turntable hole 111 to achieve mechanical locking, while the lock hole 130 is exposed, allowing for further locking with a padlock. This dual locking mechanism greatly enhances the security of the device and prevents unauthorized operation. The use of the lock prevents accidental unlocking due to external force or misoperation, ensuring that the electrical switch will not be misoperated in the padlocked state, thereby avoiding potential electrical accidents. The lock hole 130 is reasonably positioned, located behind the slot pin 500, allowing the operator to easily insert the padlock into the lock hole 130 for further locking when the slider 200 is in the second position. This design improves operational convenience. Furthermore, since the slider 200 can remain stable in the second position without any external force, it frees up both hands, allowing for simultaneous padlock operation with both hands, further enhancing operational convenience.
[0079] Please continue to refer to this. Figure 6In this embodiment, the slider 200 includes a first sliding plate and a second sliding plate perpendicular to the first sliding plate. The first sliding plate can cover the surface of the rotating handle portion 120. The two sides of the first sliding plate have side plates that fold towards the fixed base 110. At least one mounting window 201 is provided on the side plate to facilitate the insertion of the slotted pin 500 through the mounting window 201 after the slider 200 is installed on the rotating handle portion 120. The second sliding plate is parallel to the side plate, and a guide rail groove 210 is provided on the second sliding plate. Correspondingly, the rotating handle portion 120 is provided with a hollowed-out opening consistent with the guide rail groove 210. When the slotted pin 500 is inserted from the guide rail groove 210, it can not only connect and fix the slider 200 to the rotating handle portion 120, but the hollowed-out opening can also ensure that it does not interfere with the sliding of the slider 200.
[0080] It is understandable that the positions of the mounting window 201 and the guide rail groove 210 correspond, allowing the slot pin 500 to pass smoothly through the guide rail groove 210.
[0081] In this embodiment, the surface of the first sliding plate is provided with a locking mark and a sliding direction indicator of the slider 200, so as to intuitively indicate whether the electrical unit is currently in the open or closed state.
[0082] In this embodiment, the reset device 400 is a spring, which is sleeved on the outer periphery of the guide rod 300. A first protrusion 122 is provided in the guide hole 121, and one end of the spring facing the fixed base 110 abuts against the first protrusion 122. A second protrusion 330 is provided on the guide rod 300, and the other end of the spring facing the slider 200 abuts against the second protrusion 330. When the slider 200 slides to the second position, part of the guide rod 300 extends into the turntable hole 111. The position of the first end of the spring remains unchanged, and the second end of the spring moves down with the guide rod 300, causing the spring to be compressed. The reaction force of the spring on the guide rod 300 causes the guide rod 300 to abut against the slider 200, so that the slider 200 is maintained in the second position.
[0083] With the above-described design, the reset device 400 is a spring. The first protrusion 122 is on the guide hole 121, and the second protrusion 330 is on the guide rod 300. That is, one end of the spring rests against the rotating handle part 120, and the other end rests against the guide rod 300. Thus, when the guide rod 300 is pushed downwards by the slider 200 and extends into the turntable hole 111, the spring generates a reaction force. This reaction force allows the guide rod 300 to stably hold the slider 200 in place, ensuring that the slider 200 reliably remains in the locked position in the second position. This design improves the stability of the padlock and reduces the risk of accidental unlocking due to external force or misoperation.
[0084] In one possible design, a sealing ring is provided between the portion of the guide rod 300 that can extend into the turntable hole 111 and the first protrusion 122, and the sealing ring can achieve a seal between the guide hole 121 and the guide rod 300.
[0085] Through the above-described design, the sealing ring effectively prevents dust, moisture, and other impurities from entering the gap between the guide hole 121 and the guide rod 300. This sealing protection improves the reliability of the device in harsh environments and reduces malfunctions caused by dust or moisture intrusion. Furthermore, the contact between the sealing ring and the guide hole 121 creates friction; the sealing ring design enhances the stability of the guide rod 300 in the padlock state, reducing the risk of accidental unlocking due to external forces or environmental factors, and further strengthening the device's security.
[0086] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A cabinet exterior handle locking device, characterized in that, include: The external handle locking device includes a fixed base and a rotating handle, wherein the rotating handle can rotate relative to the fixed base to switch between the closed and open positions of the electrical switch. A guide rod is provided inside the rotating handle. Corresponding to the position of the guide rod, a turntable hole is provided on the fixed base. The guide rod can move back and forth in a direction perpendicular to the fixed base, so that the guide rod can leave or extend into the turntable hole. The slider is slidably disposed on the rotating handle and is restricted to a first plane by a limiting device, and can slide from a first position to a second position; When the slider is in the first position, the guide rod is completely away from the turntable hole, and the rotating handle can be freely rotated to the unlocked state; When the slider slides to the second position, part of the guide rod extends into the turntable hole so that the rotating handle part is engaged and fixed with the fixed base to the open position; The guide rod is provided with a reset device, which is used to apply a reset force to the guide rod. The reset force is used to move the guide rod towards the slider so that the guide rod is reset to the state of leaving the turntable hole. When the slider is in the second position, under the combined action of the reset device and the limiting device, the guide rod and the slider are in force balance so that the slider is maintained in the second position.
2. The cabinet exterior handle locking device according to claim 1, characterized in that, The top surface of the guide rod and the bottom surface of the slider are opposite each other. The top surface of the guide rod has a first slide surface and a second slide surface. The first slide surface is an inclined surface and the second slide surface is a plane. When the slider slides from the first slide surface to the second slide surface, it pushes the guide rod downward so that part of the guide rod extends into the turntable hole.
3. The cabinet exterior handle locking device according to claim 2, characterized in that, The first slide surface is configured as the third slide surface corresponding to the bottom surface of the slider, and the second slide surface is configured as the fourth slide surface corresponding to the bottom surface of the slider. The third slide surface is an inclined surface, and the second slide surface is a plane.
4. The cabinet exterior handle locking device according to claim 3, characterized in that, A first transition surface is provided between the first slide surface and the second slide surface; a second transition surface is provided between the third slide surface and the fourth slide surface.
5. The cabinet exterior handle locking device according to claim 1, characterized in that, The rotating handle includes a rotating base concentrically disposed with the fixed base and a hand-held part fixedly connected to the end of the rotating base away from the fixed base, and the slider is slidably disposed at the end of the rotating base away from the fixed base.
6. The cabinet exterior handle locking device according to claim 5, characterized in that, The limiting device is a slotted pin, which is fixed on the rotating seat. The slotted pin is placed horizontally on the rotating seat in a direction perpendicular to the sliding trajectory of the slider. The slider is provided with a guide groove, through which the slotted pin passes. Under the constraint of the slotted pin and the guide groove, the slider slides on the first plane relative to the rotating seat.
7. The cabinet exterior handle locking device according to claim 6, characterized in that, The rotating handle is provided with a locking hole, which is located behind the slotted pin. When the slider is in the second position, the locking hole is exposed and used for padlocking.
8. The cabinet exterior handle locking device according to claim 7, characterized in that, The rotating handle is provided with a guide hole, the direction of which is perpendicular to the fixed base. The guide rod is disposed in the guide hole and can move up and down along the guide hole in a direction perpendicular to the fixed base. When the rotating handle is in the open position, the turntable hole corresponds to the guide hole, and the guide rod can move up and down along the guide hole in a direction perpendicular to the fixed base, either leaving or entering the turntable hole.
9. The cabinet exterior handle locking device according to claim 8, characterized in that, The reset device is a spring, which is sleeved on the outer periphery of the guide rod. A first protrusion is provided in the guide hole, and the end of the spring facing the fixed base abuts against the first protrusion. The guide rod is provided with a second protrusion, and the other end of the spring facing the slider abuts against the second protrusion; When the slider slides to the second position, the guide rod extends into the turntable hole. The first end of the spring remains in the same position, and the second end of the spring moves down with the guide rod, causing the spring to be compressed. The reaction force of the spring on the guide rod causes the guide rod to press against the slider, so that the slider is maintained in the second position under the combined action of the slotted pin and the guide rod.
10. The cabinet exterior handle locking device according to claim 9, characterized in that, A sealing ring is provided between the portion of the guide rod that can extend into the turntable hole and the first protrusion, and the sealing ring can achieve a seal between the guide hole and the guide rod.