Fuse manual maintenance switch operated by one hand

Abstract

The utility model discloses a fuse manual maintenance switch operated by one hand, which comprises a plug, a socket, a high-voltage interlocking structure and a jack base body, and is characterized in that the plug comprises a handle and a shell, the two ends of the handle are respectively and movably connected with the outer wall of the shell, and the handle is in an arc shape; the jack base body is arranged at the bottom of the socket, a high-voltage interlocking signal contact pin is arranged on the jack base body, the plug is electrically connected with the socket through the jack base body, and the high-voltage interlocking structure penetrates through the plug and the socket to form a high-voltage loop; movable grooves are formed in the two sides of the shell, protruding blocks are arranged on the two sides of the socket, the protruding blocks on the two sides of the socket are connected with the movable grooves in a sliding mode, and limiting grooves are formed in the handle and used for limiting the sliding stroke of the protruding blocks. According to the utility model, the intelligent fuse signal line and the high-voltage interlocking signal share the pin, so that the wire harness demand is reduced. The double lock catches lock the socket and the plug through the handle, so that the handle can be effectively fixed and prevented from falling off due to vibration, and the safety risk is reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of high-voltage electrical systems for electric vehicles, specifically relating to a one-handed manual maintenance switch for fuses. Background Technology

[0002] In existing electric vehicles, manual access switches (MSDs) and smart fuses are key protection devices that need to be integrated with the vehicle control strategy. MSDs incorporate traditional fuses or copper busbars and achieve on / off control through high-voltage interlocking; smart fuses, on the other hand, are installed independently and require additional signal lines to communicate with the vehicle controller.

[0003] The existing technology has the following drawbacks:

[0004] The control strategy is complex: the MSD and the smart fuse need to be controlled independently, which increases the overall vehicle system design cost.

[0005] Insufficient reliability: The signal lines of smart fuses are susceptible to interference, and the mechanical latches of the MSD are prone to detachment due to vibration.

[0006] Inconvenient to operate: Traditional MSDs require two hands to operate, resulting in low maintenance efficiency in confined spaces.

[0007] Therefore, this utility model, through structural innovation, integrates an intelligent fuse into the MSD and optimizes the high-voltage interlock and signal transmission path to achieve integrated control strategy and one-handed operation. Utility Model Content

[0008] In view of the problems mentioned in the background technology above, the purpose of this utility model is to provide a one-handed manual maintenance switch for fuses, which reduces the complexity of the control strategy and improves safety and ease of operation through a double locking structure, integrated signal transmission design and one-handed operation handle.

[0009] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0010] A one-handed manual maintenance switch for a fuse includes a plug, a socket, a high-voltage interlocking structure, and a socket base. The plug includes a handle and a housing. The two ends of the handle are movably connected to the outer wall of the housing, and the handle is arc-shaped.

[0011] The socket base is located at the bottom of the socket, and a high-voltage interlock signal pin is provided on the socket base. The plug and the socket are electrically connected through the socket base, and the high-voltage interlock structure passes through the plug and the socket to form a high-voltage circuit. Movable grooves are provided on both sides of the housing, and protrusions are provided on both sides of the socket. The protrusions on both sides of the socket are slidably connected to the movable grooves. The handle is provided with a limiting groove, which is used to limit the sliding stroke of the protrusions.

[0012] Further, it also includes a smart fuse installed inside the plug, wherein the high-voltage interlock signal pin and the signal sensing line of the smart fuse are integrated into the same interface.

[0013] Furthermore, a copper busbar is embedded in the socket substrate, and the copper busbar is connected to the main circuit of the smart fuse.

[0014] Further, it also includes a first latch and a second latch. The first latch is used to fix the socket and the plug. The second latch includes a second latch part disposed on the handle and a second latch mating part disposed on the housing. The second latch mating part of the handle matches the second latch part of the housing. When the protrusion slides to the closed end of the limiting groove, the second latch automatically locks.

[0015] Furthermore, the movable groove of the housing is L-shaped, and when the protrusion slides to the end of the movable groove, it triggers the second latch to lock.

[0016] Furthermore, the socket base is made of flame-retardant material and has internal heat dissipation channels.

[0017] Furthermore, the handle surface is provided with anti-slip texture.

[0018] This utility model discloses a one-handed manual maintenance switch for fuses. The plug integrates a high-voltage interlock signal pin and a smart fuse signal line interface; the socket has a socket base at the bottom, which cooperates with the plug to conduct electricity; the high-voltage interlock structure runs through the plug and socket to realize the on / off control of the high-voltage circuit; the handle has a limit groove and a second locking engagement part, which supports one-handed sliding operation; the housing has movable grooves on both sides, which slide to connect with the protrusions of the socket.

[0019] The beneficial effects of this utility model are:

[0020] Simplified control strategy: The intelligent fuse signal line and the high-voltage interlock signal share the same pin, reducing wiring harness requirements.

[0021] Double locking to prevent slippage: The double locking mechanism locks the socket and plug together with the handle, effectively securing the handle and preventing it from slipping off due to vibration, thus reducing safety risks; the combination of mechanical locking and sliding limit design enhances shock resistance.

[0022] Convenience of one-handed operation: The sliding limit groove design of the handle allows for insertion and removal actions to be completed with one hand. Attached Figure Description

[0023] This utility model can be further illustrated by the non-limiting embodiments given in the accompanying drawings;

[0024] Figure 1 This is a front view of an embodiment of a one-handed manually operated fuse maintenance switch according to the present invention.

[0025] Figure 2 This is a cross-sectional view at point AA of an embodiment of a one-handed manually operated fuse maintenance switch according to this utility model;

[0026] Figure 3 This is a top view of an embodiment of a one-handed manually operated fuse maintenance switch according to the present invention.

[0027] Figure 4 This is a schematic diagram of the overall structure of an embodiment of the one-handed operation manual maintenance switch for fuses according to this utility model;

[0028] Figure 5 This is a partial structural schematic diagram of an embodiment of a one-handed manually operated fuse maintenance switch according to the present invention.

[0029] The symbols of the main components are explained as follows: Plug 1, Socket 2, High-voltage interlock structure 3, Handle 4, Housing 5, Socket base 6, High-voltage interlock signal pin 7, Movable groove 8, Protrusion 9, First latch 10, Second latch 11, Limiting groove 12. Detailed Implementation

[0030] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figure 1 As shown, this utility model discloses a one-handed manual maintenance switch for fuses, including a plug 1, a socket 2, a high-voltage interlocking structure 3, and a socket base 6. The plug 1 includes a handle 4 and a housing 5. The two ends of the handle 4 are movably connected to the outer wall of the housing 5, and the handle 4 is arc-shaped.

[0034] The socket base 6 is located at the bottom of the socket 2. The socket base 6 is provided with a high-voltage interlock signal pin 7. The plug 1 and the socket 2 are electrically connected through the socket base 6. The high-voltage interlock structure 3 passes through the plug 1 and the socket 2 to form a high-voltage circuit. The housing 5 is provided with movable grooves 8 on both sides. The socket 2 is provided with protrusions 9 on both sides. The protrusions 9 on both sides of the socket 2 are slidably connected to the movable grooves 8. The handle 4 is provided with a limiting groove 12. The limiting groove 12 is used to limit the sliding stroke of the protrusions 9.

[0035] In practical applications of this embodiment, a smart fuse is also included, which is installed inside the plug 1. The high-voltage interlock signal pin 7 and the signal sensing line of the smart fuse are integrated into the same interface.

[0036] In the practical application of this embodiment, a copper busbar is embedded in the socket base 6, and the copper busbar is connected to the main circuit of the smart fuse.

[0037] In the practical application of this embodiment, a first latch 10 and a second latch 11 are also included. The first latch 10 is used to fix the socket 2 and the plug 1. The second latch 11 includes a second latch part disposed on the handle 4 and a second latch mating part disposed on the housing 5. The second latch mating part of the handle 4 matches the second latch part of the housing 5. When the protrusion 9 slides to the closed end of the limiting groove 12, the second latch 11 automatically locks.

[0038] In the practical application of this embodiment, the movable groove 8 of the housing 5 is L-shaped, and when the protrusion 9 slides to the end of the movable groove 8, it triggers the second latch 11 to lock.

[0039] In the practical application of this embodiment, the socket base 6 is made of flame-retardant material and has a heat dissipation channel inside.

[0040] In the practical application of this embodiment, the surface of the handle 4 is provided with anti-slip texture.

[0041] The working principle of this utility model is as follows:

[0042] High-voltage interlock and smart fuse signal integration:

[0043] The plug 1 integrates a high-voltage interlock signal pin 7 and a smart fuse signal line interface. When the plug 1 is fully inserted into the socket 2, the high-voltage interlock signal pin 7 conducts through the elastic contact piece of the socket 2, sending a "high-voltage circuit closed" signal to the vehicle controller; if the plug is pulled out, the signal is disconnected, and the controller immediately cuts off the high-voltage power supply.

[0044] The fuse's tripping status is transmitted via the same set of pins, using time-division multiplexing technology to avoid interference. When the fuse is triggered, the signal line level changes and is fed back to the controller, simultaneously triggering high-voltage power cut-off and fault alarm.

[0045] Double locking linkage mechanism:

[0046] First latch 10: After the plug 1 and socket 2 are physically connected through the copper busbar of the socket base 6, the first latch 10 fixes the position of the two by a buckle or bolt, forming a basic mechanical connection.

[0047] Second latch 11: The operator pushes the handle 4 with one hand to slide along the L-shaped movable groove 8 of the housing 5, causing the protrusions 9 on both sides of the socket 2 to move. When the protrusions 9 slide into the closed end of the limiting groove 12 of the handle 4, the second latch on the housing 5 automatically engages with the mating part of the handle 4, forming a secondary locking.

[0048] One-handed operation procedure:

[0049] Insertion action: Hold handle 4, align plug 1 with socket 2 and insert it. Protrusion 9 slides along the movable groove 8 of housing 5 to the end of limit groove 12. Second latch 11 automatically locks and high voltage interlock signal is activated.

[0050] Pull-out action: Press the unlock button on handle 4, slide it in the opposite direction to the starting end of the movable slot 8, the second latch 11 is released, the high voltage interlock signal is disconnected, and plug 1 can be safely pulled out.

[0051] Usage process:

[0052] Step 1: Initial Connection

[0053] Align the plug 1 with the socket base 6 of the socket 2, and gently push the handle 4 to make the protrusion 9 enter the movable groove 8 of the housing 5.

[0054] Slide the handle 4 along the L-shaped groove to the end of the limit groove 12. A "click" sound indicates that the second latch is locked, the high-voltage interlock signal is activated, and the high-voltage circuit of the whole vehicle is ready.

[0055] Step 2: Fuse Status Monitoring

[0056] The intelligent fuse monitors the current in real time. If it blows due to overload, the signal is transmitted to the controller through the common pin, triggering high-voltage power cut-off and displaying a fault code.

[0057] Step 3: Inspection or replacement operation

[0058] Press the unlock button on handle 4 and slide it in the opposite direction to the starting end of movable slot 10. The second latch 11 will be released. Slowly pull out plug 1. The high-voltage interlock signal will be disconnected, ensuring operator safety. If the fuse needs to be replaced, disassemble the housing 5 of plug 1 and directly replace the internal module without modifying the wiring harness.

[0059] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A one-handed manual maintenance switch for fuses, characterized in that: It includes a plug (1), a socket (2), a high-voltage interlocking structure (3) and a socket base (6). The plug (1) includes a handle (4) and a housing (5). The two ends of the handle (4) are movably connected to the outer wall of the housing (5). The handle (4) is arc-shaped. The socket base (6) is located at the bottom of the socket (2). The socket base (6) is provided with a high-voltage interlock signal pin (7). The plug (1) and the socket (2) are electrically connected through the socket base (6). The high-voltage interlock structure (3) passes through the plug (1) and the socket (2) to form a high-voltage circuit. The housing (5) is provided with movable grooves (8) on both sides. The socket (2) is provided with protrusions (9) on both sides. The protrusions (9) on both sides of the socket (2) are slidably connected to the movable grooves (8). The handle (4) is provided with a limiting groove (12). The limiting groove (12) is used to limit the sliding stroke of the protrusions (9).

2. The single-handed operation manual maintenance switch for fuses according to claim 1, characterized in that: It also includes a smart fuse installed in the plug (1), wherein the high-voltage interlock signal pin (7) and the signal sensing line of the smart fuse are integrated in the same interface.

3. A one-handed manually operated fuse maintenance switch according to claim 1, characterized in that: A copper busbar is embedded in the socket base (6), and the copper busbar is connected to the main circuit of the smart fuse.

4. A one-handed manually operated fuse maintenance switch according to claim 1, characterized in that: It also includes a first latch (10) and a second latch (11). The first latch (10) is used to fix the socket (2) and the plug (1). The second latch (11) includes a second latch part disposed on the handle (4) and a second latch mating part disposed on the housing (5). The second latch mating part of the handle (4) matches the second latch part of the housing (5). When the protrusion (9) slides to the closed end of the limiting groove (12), the second latch (11) automatically locks.

5. A one-handed manually operated fuse maintenance switch according to claim 4, characterized in that: The movable groove (8) of the housing (5) is L-shaped. When the protrusion (9) slides to the end of the movable groove (8), it triggers the second latch (11) to lock.

6. A one-handed manually operated fuse maintenance switch according to claim 1, characterized in that: The socket base (6) is made of flame-retardant material and has a heat dissipation channel inside.

7. A one-handed manually operated fuse maintenance switch according to claim 1, characterized in that: The handle (4) has anti-slip texture on its surface.

Images