Power-off protection device and electrical equipment

Abstract

The invention discloses a power-off protection device and electrical equipment, and belongs to the technical field of electrical equipment. The power-off protection device comprises a base, a switch, a sliding block and a locking piece, the switch comprises a movable contact piece and a static contact piece, the sliding block is arranged on the base and can move relative to the base in the first direction, the movable contact piece is connected to the sliding block, the sliding block has a first position and a second position in the stroke of the sliding block, the movable contact piece makes contact with the static contact piece at the first position, and the locking piece does not make contact with the static contact piece at the second position. And the movable contact piece is separated from the static contact piece. The locking piece is movably arranged on the base and used for locking the sliding block at the second position in a releasable mode. According to the power-off protection device, the possibility that workers are injured or accidents occur in the maintenance process can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a power-off protection device and electrical equipment. Background Art

[0002] Through regular maintenance of electrical equipment, potential faults can be discovered and eliminated in a timely manner to ensure that the electrical equipment can provide services continuously and stably. Since electrical equipment is generally equipped with a high-voltage system, workers generally need to turn off the power to the electrical equipment when opening the maintenance door for maintenance to avoid electric shock during maintenance.

[0003] During the maintenance process, workers sometimes accidentally touch the button, causing the electrical equipment to power on again. If the workers are not aware of this, the maintenance process will face safety threats and potential risks, and the possibility of injury or accidents will increase.

[0004] Therefore, in the field of electrical equipment technology, how to reduce the possibility of workers being injured or accidents occurring during maintenance is a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the above problems, the present application provides a power-off protection device and electrical equipment, which can reduce the possibility of injuries or accidents to workers during maintenance.

[0006] In a first aspect, the present application provides a power-off protection device, which includes a base, a switch, a slider, and a locking member. The switch includes a moving contact piece and a stationary contact piece. The slider is disposed on the base and can move relative to the base in a first direction. The moving contact piece is connected to the slider. The slider has a first position and a second position in its stroke. In the first position, the moving contact piece contacts the stationary contact piece. In the second position, the moving contact piece is separated from the stationary contact piece. The locking member is movably disposed on the base, and the locking member is used to releasably lock the slider in the second position.

[0007] In the above scheme, during the movement of the slider, the locking member can releasably lock the slider in the second position so that the moving contact piece and the stationary contact piece remain separated, which can also interrupt the switch circuit. If the circuit needs to be reopened, the locking member needs to release the slider in advance. Such a setting can reduce the risk of electric shock caused by human error. During the maintenance process, the possibility of injury or accident to the staff is relatively low.

[0008] In an optional embodiment, the power-off protection device further includes a first elastic member, the first elastic member connects the slider and the base, and the first elastic member is used to drive the slider to move toward the second position.

[0009] In the above solution, the first elastic member can make the slider move automatically, which is conducive to reducing the dependence of the locking operation on manual operation, thereby helping to reduce the risk of electric shock caused by the staff forgetting to trigger the locking operation. At the same time, the production and design costs of the power-off protection device can be reduced by driving the slider to move through the first elastic member.

[0010] In an optional embodiment, the locking member is movable relative to the base along a second direction, where the second direction is perpendicular to the first direction.

[0011] In the above solution, the moving direction of the locking member is perpendicular to the moving direction of the slider, which helps to reduce the difficulty of designing and assembling the power-off protection device.

[0012] In an optional embodiment, the locking member has a third position extending out of the base and a fourth position retracted into the base. When the slider is in the second position and the locking member is in the third position, the locking member locks the slider.

[0013] In the above solution, during the movement of the locking member, the locking member will share part of the space with the base, which is beneficial to reducing the overall size of the power-off protection device and improving its adaptability.

[0014] In an optional embodiment, the power-off protection device further includes a second elastic member, the second elastic member connects the locking member and the base, and the second elastic member is used to drive the locking member to move to the third position.

[0015] In the above scheme, the second elastic member can, on the one hand, automatically and releasably lock the locking member with the slider, thereby avoiding the risk of electric shock caused by the staff forgetting to trigger the locking operation. On the other hand, the locking member can be moved to the third position in time to lock with the slider in the second position, thereby shortening the time required for locking and further reducing the risk of electric shock. At the same time, the second elastic member can be used to drive the locking member to move, thereby reducing the production and design costs of the power-off protection device.

[0016] In an optional embodiment, the base has a first surface perpendicular to the second direction, and the first surface is provided with a first groove for accommodating the locking member; in the third position, the locking member protrudes from the first surface, and in the fourth position, the locking member is retracted into the first groove.

[0017] In the above solution, the first groove can be used as a pre-installation reference for the locking member, which helps to reduce the difficulty of assembling the locking member.

[0018] In an optional embodiment, the power-off protection device also includes a guide rod, the extension direction of the guide rod is parallel to the second direction, the locking piece can be slidably mounted on the guide rod, one end of the guide rod is connected to the base, and the other end of the guide rod is formed with a limiting portion for limiting the disengagement of the locking piece.

[0019] In the above solution, the provision of the guide rod can enable the locking member to move smoothly and accurately along a predetermined trajectory, and the provision of the limit portion can reduce the risk of the locking member detaching from the guide rod and causing the locking cooperation between the locking member and the slider to fail.

[0020] In an optional embodiment, the slider includes a locking hook portion, and the locking member is provided with a locking hook groove, and the locking hook groove is used to cooperate with the locking hook portion to limit the slider from moving toward the first position.

[0021] In the above solution, the lock hook portion formed on the slider and the lock hook groove formed on the locking member cooperate to limit the movement of the slider to the first position, which is beneficial to simplify the number of parts of the power-off protection device, reduce costs, and simplify assembly.

[0022] In an optional embodiment, the locking member has a first guide surface and a second guide surface at both ends along the first direction, respectively, and the locking member has a second surface facing away from the base along the second direction, the second surface connects the first guide surface and the second guide surface, and the locking hook groove is arranged on the second surface and is located between the first guide surface and the second guide surface.

[0023] In the above solution, the provision of the first guide surface and the second guide surface can make the locking member and the slider move more smoothly during the matching process.

[0024] In an optional embodiment, the slider includes a first frame, a second frame and a connecting portion, the first frame and the second frame are spaced apart along a first direction, the first frame and the second frame are both sleeved on the base, and the connecting portion connects the first frame and the second frame. In the second position, a portion of the first frame forms a locking hook portion.

[0025] In the above scheme, since the first frame and the second frame are both sleeved on the base, the base can guide the first frame and the second frame, so that the slider can move smoothly and accurately along a predetermined track, and the first frame is used as a locking hook part, which can simplify the processing flow. At the same time, since the slider including the first frame, the second frame and the connecting part has more surfaces, it also provides more assembly reference surfaces for the moving contact piece, making the arrangement of the moving contact piece more flexible.

[0026] In an optional embodiment, the power-off protection device further includes a first limit member, which is disposed on the base. When the slider is located at the second position, the first limit member abuts against the slider to limit the travel of the slider.

[0027] In the above solution, the provision of the first limiting member can enable the slider to be more stably maintained at the second position when not released, thereby improving the reliability of the power-off protection device.

[0028] In an optional embodiment, the base is provided with a first limiting hole. The power-off protection device further comprises a second limiting member, which is used to be inserted into the first limiting hole to limit the slider to the first position.

[0029] In the above scheme, the second limiter and the first limiter hole are arranged to limit the position of the slider when the slider is in the first position, that is, when the moving contact piece and the stationary contact piece are in contact and connected to the circuit. When the staff is repairing the electrical equipment, they can insert the second limiter into the first limiter hole to perform live repair work, which enriches the application scenarios of the power-off protection device.

[0030] In a second aspect, the present application provides an electrical device, the electrical device comprising a cabinet and a cabinet door, the cabinet having a first opening, and the cabinet door being used to close the first opening. The electrical device further comprises a trigger and a power-off protection device in one or more of the above embodiments, the trigger is disposed in one of the cabinet and the cabinet door, and the base of the power-off protection device is disposed in the other of the cabinet and the cabinet door. The switch is connected in the main circuit of the electrical device. The trigger is configured to: drive the locking member to release the slider during the closing process of the cabinet door, and drive the slider to move from the second position to the first position.

[0031] In the above scheme, with the cooperation of the trigger and the power-off protection device, after the door of the electrical equipment is opened and the power is cut off, the locking member and the slider of the power-off protection device can be in a releasable locked state. If the circuit needs to be reopened, the locking member on the slider needs to be released in advance. Such a setting can reduce the risk of electric shock caused by human error. During the maintenance process of the staff, it is helpful to avoid the risk of electric shock to the staff without noticing, which may cause safety accidents.

[0032] In an optional embodiment, the trigger member has a second opening for the base to be inserted into.

[0033] In the above solution, the power-off protection device is triggered by setting the second opening, which has a simple structure and a relatively low failure rate.

[0034] In an optional embodiment, the trigger is arranged on the cabinet door, and the trigger includes a first wall and a second wall. The first wall is spaced apart from the cabinet door, the second opening passes through the first wall, and the second wall connects the first wall and the cabinet door.

[0035] In the above solution, the first wall and the second wall can be used as assembly references for the power-off protection device, which is helpful to reduce the difficulty of assembling the power-off protection device.

[0036] In an optional embodiment, the electrical device is a charging pile.

[0037] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, which can be implemented in accordance with the contents of the specification, and to make other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0039] Figure 1 This is a schematic diagram of the structure of a charging pile in some embodiments of the present application;

[0040] Figure 2 A schematic diagram of a partial structure of a charging pile in some embodiments of the present application;

[0041] Figure 3 An exploded view of a power-off protection device according to some embodiments of the present application;

[0042] Figure 4 A schematic diagram of the structure of a power-off protection device in some embodiments of the present application;

[0043] Figure 5 A cross-sectional view of a power failure protection device according to some embodiments of the present application, showing a second position;

[0044] Figure 6 It is a schematic diagram of the structure of the power-off protection device of some embodiments of the present application, showing the second position;

[0045] Figure 7 A cross-sectional view of a power failure protection device according to some embodiments of the present application, showing a first position;

[0046] Figure 8 A cross-sectional view of a power failure protection device according to some other embodiments of the present application, showing a first position;

[0047] Fig. 9 It is a schematic diagram of the structure of the power-off protection device of some embodiments of the present application, showing that the second limiting member is inserted into the first limiting hole, and the slider is located at the first position;

[0048] Fig.10 This is an isometric view of a power-off protection device according to some embodiments of the present application, showing that a second limiting member is inserted into a first limiting hole, and a slider is located at a first position;

[0049] Fig.11 A cross-sectional view of a power failure protection device according to some other embodiments of the present application, showing a second position;

[0050] Fig.12 A cross-sectional view of a power failure protection device according to some other embodiments of the present application, showing a second position;

[0051] Fig.13It is a cross-sectional view of the power-off protection device of some other embodiments of the present application, showing the second position.

[0052] The reference numerals in the specific implementation manner are as follows:

[0053] 1000-charging pile; 400-trigger; 401-second opening; 402-first wall; 403-second wall; 404-fourth surface; 300-cabinet door; 200-cabinet; 201-first opening; 100-power-off protection device; 10-base; 101-first surface; 102-first groove; 103-second limiting hole; 104-first limiting hole; 105-first slide groove; 20-switch; 21-moving contact piece; 211-first mounting hole; 212-second mounting hole; 22-static contact piece; 23-slider; 231-lock hook; 2 32-first frame; 233-second frame; 234-connecting part; 235-extension part; 236-third surface; 24-locking member; 241-lock hook groove; 242-first guide surface; 243-second guide surface; 244-second surface; 25-first elastic member; 26-second elastic member; 27-guide rod; 271-limiting part; 28-first limiting member; 29-first fastener; 30-second limiting member; 31-connecting rod; 32-slide rail; 33-second slide groove; 34-third slide groove; X-first direction; Y-second direction; Z-third direction. DETAILED DESCRIPTION

[0054] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0056] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0057] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0058] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0059] The power-off protection device described in the embodiments of the present application can be applicable to electrical equipment such as distribution cabinets (distribution boxes), generators, transformers, switch cabinets, utility poles, street lights, elevators, air conditioners, washing machines, etc.

[0060] For the convenience of description, the following embodiments are described by taking a charging pile as an example.

[0061] A charging pile, also known as an electric vehicle charging station or electric vehicle power supply equipment, is a device that provides electrical energy to electric vehicles so that the electric vehicles can store enough electricity to support their operation.

[0062] Charging piles can be classified by installation method, including but not limited to floor-standing charging piles (vertical charging piles), wall-mounted charging piles, etc. Charging piles can be classified by power supply method, including but not limited to AC charging piles, DC charging piles, AC / DC integrated charging piles, etc. Charging piles can be classified by the number of charging ports, including but not limited to one-charger-per-pile, one-charger-per-pile, etc.

[0063] The normal operation of the charging pile is directly related to the owner's experience and charging efficiency. Through regular maintenance, potential faults can be discovered and eliminated in time to ensure that the charging pile can provide charging services continuously and stably. For example, it can ensure that the electrical system and grounding device of the charging pile meet safety standards, reduce the risk of safety accidents such as leakage and fire, and ensure the safety of users and equipment. Damaged parts can be replaced in time, and necessary maintenance and care can be carried out on the charging pile, thereby extending the service life of the charging pile and reducing replacement costs. Maintenance can also ensure that it is in the best working condition, for example, cleaning the outer shell and internal components of the charging pile to maintain its good heat dissipation performance. At the same time, it can also reduce the interruption of charging services caused by fault downtime and reduce maintenance costs, thereby improving operational efficiency and reducing the operating costs of enterprises.

[0064] When inspecting and repairing charging piles, considering that charging piles involve high voltage electricity during operation, if the power is not turned off for inspection and repair, the staff may face the risk of electric shock. In addition, during the inspection and repair process, if the charging pile is still energized, it may cause a short circuit due to improper operation or aging of the equipment, thereby causing safety accidents such as fire. Therefore, in general, the charging pile will be powered off before inspection and repair.

[0065] However, staff sometimes forget to turn off the power, and there is a greater risk of electric shock during maintenance. In order to avoid the above situation, some charging piles will have a power-off switch in a conspicuous place, and some charging piles will have a door-opening power-off device. After the maintenance door is opened, the charging pile will automatically cut off the power. But even so, because the staff may accidentally touch the button or power-off switch of the power-off device during maintenance, causing the charging pile to be powered on again, the staff will face greater safety threats and potential risks, and the possibility of injury or accidents is relatively high.

[0066] In view of this, the present application provides a power-off protection device, which includes a base, a switch, a slider and a locking member. The switch includes a moving contact piece and a static contact piece. The slider is arranged on the base and can move relative to the base in a first direction. The moving contact piece is connected to the slider. The slider has a first position and a second position in its stroke. In the first position, the moving contact piece is in contact with the static contact piece, and in the second position, the moving contact piece is separated from the static contact piece. The locking member is movably arranged on the base, and the locking member is used to releasably lock the slider in the second position. During the movement of the slider, the locking member can releasably lock the slider in the second position so that the moving contact piece and the static contact piece remain separated, that is, the switch disconnects the circuit. If the circuit needs to be re-conducted, it is necessary to release the locking member from the slider in advance. Such a setting can reduce the risk of electric shock caused by human error causing the circuit to be connected. During the maintenance process of the staff, the possibility of the staff being injured or an accident occurring is also relatively low.

[0067] Please refer to Figure 1 and Figure 2 , Figure 1The schematic diagram of the structure of the charging pile 1000 of some embodiments of the present application, the charging pile 1000 generally has a housing cavity, and the housing cavity is used to accommodate various components of the charging pile 1000. The components of the charging pile 1000 include but are not limited to a charging module, a controller and a power supply, and the charging module is used to convert the input alternating current into direct current suitable for charging electric vehicles. The controller is used to adjust the charging current, voltage and other parameters according to the charging requirements and status of the electric vehicle to ensure the safety and stability of the charging process. At the same time, the controller is also responsible for controlling the work of components such as the display screen and the account management module of the charging pile 1000. The power supply provides power to the charging module and other components to ensure their normal operation. Of course, the components of the charging pile 1000 can also include a communication module and a heat dissipation system. The communication module is used to communicate with the electric vehicle to transmit control signals, charging parameters and status information. The communication method can be power line communication (PLC) or wireless communication (such as Wi-Fi, Bluetooth, etc.) to realize data exchange between the charging pile 1000 and the electric vehicle. The heat dissipation system includes components such as fans and heat sinks, which are used to dissipate the heat generated by the charging pile 1000 during operation to ensure the normal operating temperature of the internal components of the charging pile 1000. Of course, in some embodiments, the heat dissipation system may also include a liquid cooling module.

[0068] The charging pile 1000 generally includes a power supply circuit and a control circuit. The power supply circuit is the main power supply part of the charging pile 1000, which is responsible for introducing the external power supply into the charging pile 1000 and converting it into electric energy suitable for the charging module and other components. The control circuit is a circuit inside the charging pile 1000 for controlling the charging process, displaying charging information, communicating with electric vehicles and other functions. During power-off maintenance, although the power supply circuit has been cut off, components such as capacitors in the control circuit may still store electric energy. In some embodiments, the charging pile 1000 may include a cabinet 200 and a cabinet door 300, the cabinet 200 includes a accommodating cavity with a first opening 201, and the cabinet door 300 is used to close the first opening 201. A power-off protection device 100 is provided on the cabinet 200, and a trigger 400 that cooperates with the power-off protection device 100 is provided on the cabinet door 300. When the cabinet door 300 is closed, that is, when the first opening 201 is closed, the trigger 400 triggers the power-off protection device 100 to operate so that the main circuit is connected. When the cabinet door 300 is closed, the power-off protection device 100 acts in the reverse direction to disconnect the main circuit. The main circuit may refer to the power circuit and / or the control circuit.

[0069] According to some embodiments of the present application, referring to Figure 3-Figure 7The present application provides a power-off protection device 100, which includes a base 10, a switch 20, a slider 23 and a locking member 24. The switch 20 includes a moving contact piece 21 and a stationary contact piece 22. The slider 23 is disposed on the base 10 and can move relative to the base 10 along a first direction X. The moving contact piece 21 is connected to the slider 23. The slider 23 has a first position and a second position in its stroke. In the first position, the moving contact piece 21 contacts the stationary contact piece 22. In the second position, the moving contact piece 21 is separated from the stationary contact piece 22. The locking member 24 is movably disposed on the base 10, and the locking member 24 is used to releasably lock the slider 23 in the second position.

[0070] In some embodiments, the stationary contact piece 22 may be disposed in one of the cabinet body 200 or the cabinet door 300 .

[0071] The movable contact piece 21 can be connected to any surface of the slider 23 .

[0072] The movable contact piece 21 can be connected to the slider 23 by fastener connection, welding, bonding, etc. For example, in some embodiments, please refer to Figure 3 The movable contact piece 21 can pass through the first mounting hole 211 on the movable contact piece 21 through the first fastener 29 and be connected to the slider 23 in cooperation with the second mounting hole 212 on the slider 23 .

[0073] In some embodiments, the base 10 is a lock body of the charging pile 1000 , and the locking member 24 is a lock tongue of the charging pile 1000 .

[0074] In some embodiments, the slider 23 may be driven by a magnet to move relative to the base 10 along the first direction X. In other embodiments, the slider 23 may be driven by a linear travel drive mechanism, such as a cylinder, a hydraulic cylinder, etc. Of course, in other embodiments, the power-off protection device 100 may not include a drive member for driving the slider 23 to move, and the movement of the slider 23 may be achieved by pushing a tool, etc.

[0075] In some embodiments, the locking member 24 may be driven by a magnet so that it can be movably disposed on the base 10. In other embodiments, the locking member 24 may be driven by a linear travel drive mechanism, such as a cylinder, a hydraulic cylinder, etc. Of course, in other embodiments, the power-off protection device 100 may not include a drive member for driving the locking member 24 to move, and the movement of the locking member 24 may be achieved by pushing a tool, etc.

[0076] In some embodiments, the locking member 24 can be driven by a torsion spring, and the locking member 24 can releasably lock the slider 23 in the second position after rotating a certain angle. In other embodiments, when the cabinet door 300 is closed, the torsion spring compresses the locking member 24 to release the slider 23, and the slider 23 is located in the first position, and the moving contact piece 21 and the static contact piece 22 are in contact to connect the circuit. When the cabinet door 300 is opened, the torsion spring drives the locking member 24 to rotate, so that the locking member 24 can releasably lock the slider 23.

[0077] In some embodiments, when the slider 23 moves to the second position, the locking member 24 can releasably lock the slider 23 via a pin, a fastener, or the like.

[0078] In some embodiments, the locking cooperation between the locking member 24 and the slider 23 may also be achieved by providing a spring sheet on the locking member 24 and / or the slider 23 .

[0079] Please refer to Figure 7 , Figure 8 , Fig. 9 , Fig.10 The slider 23 is located at the first position.

[0080] Please refer to Figure 4 , Figure 5 , Figure 6 , Fig.11 , Fig.12 , Fig.13 The slider 23 is located at the second position.

[0081] In the first position, the moving contact piece 21 is in contact with the stationary contact piece 22, which means that the circuit is in a conducting state. The charging pile 1000 can operate normally.

[0082] In the second position, the moving contact piece 21 is separated from the stationary contact piece 22, which means that the circuit is in an open state. The charging pile 1000 is powered off. Maintenance personnel can turn off the power for maintenance without the risk of electric shock.

[0083] The locking member 24 is used to releasably lock the slider 23 in the second position, which means that an unlocking operation is required to release the slider 23. In other words, the slider 23 cannot be moved by a person touching it, and the slider 23 can only release its freedom after a conscious unlocking operation.

[0084] According to some embodiments of the present application, referring to Figure 3-Figure 7 The power-off protection device 100 further includes a first elastic member 25 , which connects the slider 23 and the base 10 , and is used to drive the slider 23 to move toward the second position.

[0085] The first elastic member 25 can be connected to the slider 23 and the base 10 by welding, screw connection, etc. Of course, the first elastic member 25 is also disposed between the slider 23 and the base 10 in an abutting manner.

[0086] The number of the first elastic member 25 can be multiple. For example, please refer to Figure 3 , two first elastic members 25 are provided.

[0087] The first elastic member 25 may include but is not limited to an airbag, a spring, and the like.

[0088] The provision of the first elastic member 25 can enable the slider 23 to move automatically, which is beneficial to reducing the dependence of the locking operation on manual operation, thereby helping to reduce the risk of electric shock caused by the staff forgetting to trigger the locking operation.

[0089] According to some embodiments of the present application, referring to Figure 3-Figure 7 The locking member 24 can move relative to the base 10 along the second direction Y, and the second direction Y is perpendicular to the first direction X.

[0090] The second direction Y may be any direction in a plane perpendicular to the first direction X.

[0091] In some embodiments, please refer to Figure 8 The slider 23 includes a locking hook portion 231, and the locking member 24 is provided with a locking hook groove 241, which is used to cooperate with the locking hook portion 231 to limit the slider 23 from moving to the first position. The locking hook groove 241 extends along the first direction X to the surface of the base 10 on one side in the first direction X. When the locking hook groove 241 is inserted into the second opening 401 provided by the trigger member 400, the trigger member 400 presses against the bottom surface of the locking hook groove 241, so that the locking member 24 sinks into the locking hook groove 241, and the slider 23 is released and moves to the second position.

[0092] In some embodiments, please refer to Fig.11The locking member 24 is disposed on one side of the slider 23 in the second direction Y. The slider 23 includes a locking hook portion 231, and the locking member 24 is provided with a locking hook groove 241, which is used to cooperate with the locking hook portion 231. The locking member 24 has a first guide surface 242 and a second guide surface 243 at both ends along the first direction X, respectively. The locking member 24 has a second surface 244 away from the base 10 along the second direction Y, and the second surface 244 connects the first guide surface 242 and the second guide surface 243. The locking hook groove 241 is disposed on the second surface 244 and is located between the first guide surface 242 and the second guide surface 243. The base 10 is provided with a slide rail 32, and one end of the guide rod 27 is connected to the locking member 24, and the other end of the guide rod 27 is locked and cooperated with the slide rail 32 and is formed with a limiting portion 271 for limiting the disengagement of the locking member 24, so as to limit the movement of the slider 23 to the first position. A second slide groove 33 is provided on the base 10, a part of the slider 23 forms a lock hook portion 231, one end of the connecting rod 31 is connected to the slider 23, and the other end of the connecting rod 31 is slidably matched with the second slide groove 33. One end of the first elastic member 25 is connected to the connecting rod 31 and the other end is connected to the base 10. The first elastic member 25 is used to drive the slider 23 to move to the second position. The second elastic member 26 is connected to the connecting rod 31 and the base 10, and the second elastic member 26 is used to drive the locking member 24 to move away from the base 10 along the second direction Y. The dotted arrow in the figure shows a reference surface. After the power-off protection device 100 is inserted into the trigger member 400, the trigger member 400 presses the locking member 24 close to the base 10, the lock hook portion 231 is released, and the slider 23 moves to the first position. The reference surface corresponds to the pressing surface of the trigger member 400, and the reference surface can simulate the reference surface of the movement relationship between the two during the design and assembly process.

[0093] Since the moving direction of the locking member 24 is perpendicular to the moving direction of the slider 23 , the movement relationship between the two and the states of the first position and the second position can be easily simulated during the design and assembly process, thereby helping to reduce the design and assembly difficulty of the power-off protection device 100 .

[0094] According to some embodiments of the present application, referring to Figure 3-Figure 7 The locking member 24 has a third position extending out of the base 10 and a fourth position retracted into the base 10. When the slider 23 is in the second position and the locking member 24 is in the third position, the locking member 24 locks the slider 23.

[0095] Please refer to Figure 5 and Figure 7During the movement of the locking member 24, at least part of the locking member 24 will share part of the space with the base 10, which is beneficial to reducing the overall size of the power-off protection device 100 and improving its adaptability. Taking the trigger member 400 setting the second opening 401 to trigger the power-off protection device 100 as an example, the above setting can make the size of the second opening 401 smaller, so that the space occupied by the trigger member 400 is also smaller, and the arrangement of the trigger member 400 and the power-off protection device 100 can be completed in a limited space.

[0096] According to some embodiments of the present application, referring to Figure 3-Figure 7 The power-off protection device 100 further includes a second elastic member 26 , which connects the locking member 24 and the base 10 , and is used to drive the locking member 24 to move toward the third position.

[0097] The second elastic member 26 can be connected to the slider 23 and the base 10 by welding, screw connection, etc. Of course, the second elastic member 26 is also arranged between the locking member 24 and the base 10 in an abutting manner.

[0098] The number of the second elastic member 26 can be plural.

[0099] The second elastic member 26 may include but is not limited to an air bag, a spring, and the like.

[0100] The second elastic member 26 can, on one hand, automatically and releasably lock the locking member 24 with the slider 23, thereby avoiding the risk of electric shock caused by the staff forgetting to trigger the locking operation. On the other hand, the locking member 24 can be moved to the third position in time to lock with the slider 23 in the second position, thereby shortening the time required for locking and further reducing the risk of electric shock. At the same time, by driving the locking member 24 to move through the second elastic member 26, the production and design costs of the power-off protection device 100 can be reduced.

[0101] According to some embodiments of the present application, referring to Figure 3-Figure 7 The base 10 has a first surface 101 perpendicular to the second direction Y, and the first surface 101 is provided with a first groove 102 for accommodating the locking member 24; in the third position, the locking member 24 protrudes from the first surface 101, and in the fourth position, the locking member 24 is retracted into the first groove 102.

[0102] In some embodiments, the first groove 102 may extend along the third direction Z to the outer surface of the base 10 .

[0103] In some embodiments, in the same projection plane perpendicular to the second direction Y, the first groove 102 is located in the orthographic projection of the base 10 .

[0104] The locking element 24 is retracted into the first groove 102 , which means that, in the fourth position, the height of the locking element 24 protruding from the first surface 101 is lower than the height of the locking element 24 protruding from the first surface 101 in the third position, or the locking element 24 is completely located in the first groove 102 .

[0105] Since the base 10 is provided with the first groove 102 , during the assembly process of the power-off protection device 100 , the first groove 102 can be used as a pre-installation reference for the locking member 24 , which helps to reduce the difficulty of assembling the locking member 24 .

[0106] According to some embodiments of the present application, referring to Figure 3-Figure 7 The power-off protection device 100 also includes a guide rod 27, the extension direction of the guide rod 27 is parallel to the second direction Y, the locking member 24 is slidably mounted on the guide rod 27, one end of the guide rod 27 is connected to the base 10, and the other end of the guide rod 27 is formed with a limiting portion 271 for limiting the disengagement of the locking member 24.

[0107] In some embodiments, the limiting portion 271 is annular. In other embodiments, the limiting portion 271 may also be a plurality of protrusions spaced apart along the circumference of the guide rod 27 .

[0108] In some embodiments, the guide rod 27 can be a screw, one end of the rod of the screw is threadedly connected to the base 10, the locking member 24 can be slidably mounted on the rod, and the head of the screw forms a limiting portion 271.

[0109] In some embodiments, one end of the guide rod 27 is welded to the base 10 .

[0110] In some embodiments, the guide rod 27 is coaxially disposed with the second elastic member 26 .

[0111] In some embodiments, the guide rod 27 is spaced apart from the second elastic member 26 .

[0112] According to some embodiments of the present application, referring to Figure 3-Figure 7 as well as Fig.12 and Fig.13 The slider 23 includes a locking hook portion 231 , and the locking member 24 is provided with a locking hook groove 241 , which is used to cooperate with the locking hook portion 231 to limit the slider 23 from moving toward the first position.

[0113] In some embodiments, the locking hook groove 241 may be formed by a peripheral area of ​​a protrusion formed on the locking member 24 .

[0114] In some embodiments, the lock hook portion 231 can be a hole, and the lock hook groove 241 can be matched by a pin shaft or a fastener that passes through the above-mentioned hole in sequence and is inserted into the lock hook groove 241 to limit the movement of the slider 23 to the first position. The pin shaft or the fastener can be called a third limiter.

[0115] In some embodiments, please refer to Fig.13 The slider 23 includes a slide bar, a portion of which forms a lock hook portion 231. The lock hook groove 241 is a groove provided on the surface of the locking member 24 on one side in the second direction Y, and the groove extends to the surface of the locking member 24 on one side in the third direction Z. In other embodiments, please refer to Fig.12 The slider 23 includes a slide bar, a part of which forms a lock hook portion 231. The lock hook groove 241 is a groove provided on the surface of the locking member 24 on one side in the second direction Y, and the groove extends to the surfaces of the locking member 24 on both sides in the third direction Z. In the above embodiment, three slide grooves can also be provided on the base 10, the slider 23 and the third slide groove 34 are slidably matched, and the second elastic member 26 connects the slider 23 and the base 10. At the same time, an abutment block can also be provided on the slider 23 or the base 10 to limit the stroke of the slider 23, so that the moving contact piece 21 and the static contact piece 22 are in contact at a predetermined first position, thereby improving the accuracy of the power-off protection device 100.

[0116] According to some embodiments of the present application, referring to Figure 3-Figure 7 The locking member 24 has a first guide surface 242 and a second guide surface 243 at both ends along the first direction X respectively, and the locking member 24 has a second surface 244 away from the base 10 along the second direction Y, and the second surface 244 connects the first guide surface 242 and the second guide surface 243. The locking hook groove 241 is set on the second surface 244 and is located between the first guide surface 242 and the second guide surface 243.

[0117] The first guide surface 242 may include multiple segments, such as one straight line segment and two arc segments. Of course, the first guide surface 242 may include only one segment, such as one straight line segment or one arc segment.

[0118] According to some embodiments of the present application, referring to Figure 3-Figure 7 The slider 23 includes a first frame 232, a second frame 233 and a connecting portion 234. The first frame 232 and the second frame 233 are spaced apart along the first direction X. The first frame 232 and the second frame 233 are both sleeved on the base 10. The connecting portion 234 connects the first frame 232 and the second frame 233. In the second position, a portion of the first frame 232 forms a locking hook portion 231.

[0119] In some embodiments, the first frame body 232 , the second frame body 233 and the connecting portion 234 are integrally formed.

[0120] In some embodiments, the first frame 232 , the second frame 233 and the connection portion 234 may be connected by welding, fastener connection, or the like.

[0121] According to some embodiments of the present application, referring to Figure 3-Figure 7 The power-off protection device 100 further includes a first limit member 28 , which is disposed on the base 10 . When the slider 23 is located at the second position, the first limit member 28 abuts against the slider 23 to limit the travel of the slider 23 .

[0122] In some embodiments, when the slider 23 is located at the second position, the first limiting member 28 abuts against the slider 23 , and the locking member 24 abuts against the slider 23 .

[0123] In some embodiments, the slider 23 may further include an extension portion 235, which is disposed on one side of the slider 23 in the first direction X. The trigger member 400 presses against the extension portion 235 to drive the slider 23 to move to the first position. In other embodiments, the base 10 may be provided with a first slide groove 105 extending along the first direction X, and the extension portion 235 slidably cooperates with the first slide groove 105.

[0124] In some embodiments, a protrusion may be disposed on the trigger member 400 , and the protrusion presses the slider 23 to drive the slider 23 to move toward the first position.

[0125] In some embodiments, the first limiting member 28 can be assembled after being separately molded from the base 10. For example, a second limiting hole 103 is provided on the base 10, and the first limiting member 28 is a limiting screw installed in the second limiting hole 103 to limit the stroke of the slider 23.

[0126] In some embodiments, the first limiting member 28 may be integrally formed with the base 10 . For example, the first limiting member 28 may be a protrusion protruding from a surface of the base 10 in the third direction Z.

[0127] According to some embodiments of the present application, referring to Fig. 9 and Fig.10 The base 10 is provided with a first limiting hole 104; the power-off protection device 100 further includes a second limiting member 30, which is used to be inserted into the first limiting hole 104 to limit the slider 23 to the first position.

[0128] In some embodiments, the second limiting member 30 may be a pin.

[0129] In some embodiments, the second limiting member 30 may be key-shaped.

[0130] In some embodiments, the slider 23 is provided with a through hole, and the second limiting member 30 passes through the through hole and is inserted into the first limiting hole 104 to limit the slider 23 to the first position.

[0131] In some cases, during the maintenance process, some modules inside the charging pile 1000 will be replaced. In order to improve the maintenance efficiency and avoid multiple opening and closing of the cabinet door 300. When the module is electrically connected but not fixedly assembled, the maintenance personnel need to verify its operating status first, and then fix it in the cabinet 200 after it is operating normally. At this time, it is necessary to connect the main circuit when the cabinet door 300 is opened, that is, it is necessary to perform live maintenance. The second limiter 30 and the first limiter hole 104 are set to limit the position of the slider 23 when the slider 23 is in the first position, that is, the moving contact piece 21 and the static contact piece 22 are in contact with the connected circuit. When the staff repairs the electrical equipment, the second limiter 30 can be inserted into the first limiter hole 104 to perform live maintenance operations, which enriches the application scenarios of the power-off protection device 100. In some implementations, when the second limiter 30 is pulled out, the locking member 24 and the slider 23 will be restored to the locked state under the drive of the first elastic member 25 and the second elastic member 26.

[0132] According to some embodiments of the present application, referring to Figure 1-Figure 7 The present application provides an electrical device, the electrical device comprising a cabinet 200 and a cabinet door 300, the cabinet 200 having a first opening 201, and the cabinet door 300 being used to close the first opening 201. The electrical device further comprises a trigger 400 and a power-off protection device 100 in one or more of the above-mentioned embodiments, the trigger 400 being arranged in one of the cabinet 200 and the cabinet door 300, and the base 10 of the power-off protection device 100 being arranged in the cabinet 200 and the other of the cabinet 200. The switch 20 is connected in the main circuit of the electrical device. The trigger 400 is configured to: drive the locking member 24 to release the slider 23 during the closing process of the cabinet door 300, and drive the slider 23 to move from the second position to the first position.

[0133] In some embodiments, the trigger member 400 is a box body disposed on the cabinet door 300 or the cabinet body 200 , and the box body has a socket for inserting the power-off protection device 100 .

[0134] In some embodiments, the trigger member 400 may also be a plate or a rod. If the trigger member 400 is a rod, the trigger member 400 may be an L-shaped rod or a straight-shaped rod. If the trigger member 400 is a plate, when the cabinet door 300 is closed, a convex portion may be provided on the side of the plate facing the base 10 for mortgaging the locking member 24 to drive the locking member 24 to move. Of course, the plate may also be in the shape of a flat plate.

[0135] It should be noted that the trigger member 400 shown by the dotted line in the drawings does not limit its shape.

[0136] In some embodiments, the trigger member 400 includes a bump protruding from a surface thereof, and the bump is used to press the slider 23 to move the slider 23 to the first position.

[0137] When the switch 20 is closed, the charging pile 1000 is in a usable state, and when the switch 20 is opened, the charging pile 1000 is in a power-off state.

[0138] In some embodiments, the travel of the locking member 24 and / or the slider 23 can be limited by setting the shapes and sizes of the locking member 24 and the slider 23 so that the slider 23 is located at the second position after the cabinet door 300 is opened.

[0139] According to some embodiments of the present application, referring to Figure 1-Figure 7 The trigger member 400 has a second opening 401 for the base 10 to be inserted into.

[0140] Please refer to Figure 4-Figure 7 In the process of closing the cabinet door 300, the inner circumferential surface of the second opening 401 first presses the trigger member 400 to drive the locking member 24 to move close to the base 10, and the slider 23 is released. Then, the outer surface of the trigger member 400 presses the slider 23 on one side in the third direction Z to drive the slider 23 to move to the first position. Compared with the method of controlling the action of the trigger member 400 by setting an electrical component through a controller, the power-off protection device 100 is mechanically triggered by setting the second opening 401, which has a simple structure and a relatively low failure rate.

[0141] According to some embodiments of the present application, referring to Figure 1-Figure 7 The trigger member 400 is arranged on the cabinet door 300, and the trigger member 400 includes a first wall body 402 and a second wall body 403. The first wall body 402 is spaced apart from the cabinet door 300, the second opening 401 passes through the first wall body 402, and the second wall body 403 connects the first wall body 402 and the cabinet door 300.

[0142] The number of the second wall body 403 may be one or more. The second wall body 403 may also be a peripheral wall.

[0143] The second wall body 403 can be connected to the first wall portion and the cabinet door 300 by welding, fastener connection, etc.

[0144] In some embodiments, the first wall 402 and the second wall 403 are integrally formed.

[0145] According to some embodiments of the present application, referring to Figure 1 , the electrical equipment is 1000 charging piles.

[0146] According to some embodiments of this application, please refer to Figure 1-Figure 3 as well as Figure 5-Figure 7 When the cabinet door 300 is closed, the power-off protection device 100 will be Figure 5 The state gradually changes to Figure 7In the state shown, the trigger member 400 first presses the locking member 24 to release the slider 23, and the slider 23 recovers its freedom. When the cabinet door 300 is closed, it moves to the first position along the first direction X, and the circuit of the electrical device is turned on.

[0147] by Figure 4 The illustrated embodiment is used as an example for explanation. After the cabinet door 300 is closed, the slider 23 has a third surface 236 abutting against the trigger member 400 , and the trigger member 400 has a fourth surface 404 abutting against the slider.

[0148] During the closing process of the cabinet door 300, as the power-off protection device 100 moves relative to the trigger member 400, the inner surface of the second opening 401 first presses against the first guide surface 242 and then presses against the second surface 244, the locking member 24 retracts into the base 10, and a portion of the locking member 24 and a portion of the base 10 are inserted into the second opening 401. Afterwards, the fourth surface 404 of the trigger member 400 presses against the third surface 236 of the slider 23 to push the slider 23 to the first position.

[0149] When the cabinet door 300 is opened, the power-off protection device 100 will Figure 7 The state gradually changes to Figure 5 In the state shown, the locking member 24 and the slider 23 that have recovered their freedom begin to move, and when the slider 23 moves to the second position, the locking member 24 is locked with the slider 23 .

[0150] by Figure 4 The illustrated embodiment is used as an example for explanation. During the opening process of the cabinet door 300, as the power-off protection device 100 moves relative to the trigger member 400, the second surface 244 of the locking member 24 gradually disengages from the restriction of the inner surface of the second opening 401. Under the action of the second elastic member 26, the locking member 24 extends out of the base 10. At the same time, the third surface 236 of the slider 23 gradually disengages from the restriction of the fourth surface 404 of the trigger member 400. Under the action of the first elastic member 25, the slider 23 moves to the second position via the second guide surface 243.

[0151] At this time, the circuit of the electrical device is disconnected, and the locking member 24 releasably locks the slider 23. If the electrical device is to be powered on again, the locking member 24 and the slider 23 must be unlocked first. This can reduce the risk of electric shock caused by human error.

[0152] Please continue to refer to Fig. 9 and Fig.10If the electrical equipment needs to be repaired under power, the locking member 24 can be unlocked by hand or tools, and then the slider 23 can be pushed to the first position and then inserted into the second stopper 30. Under the restriction of the second stopper 30, the moving contact piece 21 and the stationary contact piece 22 are kept in contact. The staff can repair the electrical equipment under power when the cabinet door 300 is opened.

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A power-off protection device, characterized in that: include: Pedestal; A switch, comprising a moving contact piece and a stationary contact piece; a slider, disposed on the base and movable relative to the base in a first direction, the movable contact piece connected to the slider, the slider having a first position and a second position in its stroke, in the first position, the movable contact piece is in contact with the stationary contact piece, and in the second position, the movable contact piece is separated from the stationary contact piece; A locking member is movably disposed on the base, and is used to releasably lock the slider in the second position.

2. The power-off protection device according to claim 1, characterized in that: The power-off protection device further includes a first elastic member, the first elastic member connects the slider and the base, and the first elastic member is used to drive the slider to move toward the second position.

3. The power-off protection device according to claim 1, characterized in that: The locking member can move relative to the base along a second direction, and the second direction is perpendicular to the first direction.

4. The power-off protection device according to claim 3, characterized in that: The locking member has a third position extending out of the base and a fourth position retracted into the base; When the slider is in the second position and the locking element is in the third position, the locking element locks the slider.

5. The power-off protection device according to claim 4, characterized in that: The power-off protection device further includes a second elastic member, the second elastic member connects the locking member and the base, and the second elastic member is used to drive the locking member to move toward the third position.

6. The power-off protection device according to claim 4, characterized in that: The base has a first surface perpendicular to the second direction, and the first surface is provided with a first groove for accommodating the locking member; In the third position, the locking element protrudes from the first surface, and in the fourth position, the locking element is retracted into the first groove.

7. The power-off protection device according to claim 4, characterized in that: The power-off protection device also includes a guide rod, the extension direction of which is parallel to the second direction, the locking piece can be slidably mounted on the guide rod, one end of the guide rod is connected to the base, and the other end of the guide rod is formed with a limiting portion for limiting the disengagement of the locking piece.

8. The power-off protection device according to claim 4, characterized in that: The slider includes a locking hook portion, and the locking member is provided with a locking hook groove, and the locking hook groove is used to cooperate with the locking hook portion to limit the slider from moving toward the first position.

9. The power-off protection device according to claim 8, characterized in that: The locking member has a first guide surface and a second guide surface at both ends along the first direction respectively, and the locking member has a second surface away from the base along the second direction, the second surface connects the first guide surface and the second guide surface, and the lock hook groove is arranged on the second surface and is located between the first guide surface and the second guide surface.

10. The power-off protection device according to claim 8, characterized in that: The slider comprises a first frame, a second frame and a connecting portion, the first frame and the second frame are spaced apart along the first direction, the first frame and the second frame are both sleeved on the base, and the connecting portion connects the first frame and the second frame; In the second position, a portion of the first frame forms the lock hook portion.

11. The power-off protection device according to claim 1, characterized in that: The power-off protection device further includes a first limiter, which is disposed on the base. When the slider is located at the second position, the first limiter abuts against the slider to limit the travel of the slider.

12. The power-off protection device according to claim 1, characterized in that: The base is provided with a first limiting hole; The power-off protection device further includes a second limiting member, and the second limiting member is used to be inserted into the first limiting hole to limit the sliding block to the first position.

13. An electrical device, characterized in that: The cabinet comprises a cabinet body and a cabinet door, wherein the cabinet body has a first opening, and the cabinet door is used to close the first opening; The electrical device further comprises a trigger and a power-off protection device as claimed in any one of claims 1 to 12, wherein the trigger is arranged at one of the cabinet body and the cabinet door, and the base of the power-off protection device is arranged at the other of the cabinet body and the cabinet door; The switch is connected in the main circuit of the electrical device; Wherein, the trigger member is configured to: drive the locking member to release the slider during the closing process of the cabinet door, and drive the slider to move from the second position to the first position.

14. The electrical device according to claim 13, characterized in that The trigger member has a second opening for the base to be inserted into.

15. The electrical device according to claim 14, characterized in that The trigger member is arranged on the cabinet door, and the trigger member includes a first wall body and a second wall body, the first wall body is spaced apart from the cabinet door, the second opening is arranged through the first wall body, and the second wall body connects the first wall body and the cabinet door.

16. The electrical device according to claim 13, characterized in that The electrical equipment is a charging pile.

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