Screw maintenance switch

Abstract

The invention discloses a screw maintenance switch which comprises a plug, a socket and a fuse and further comprises a locking mechanism, the plug is of an integrally-formed structure, a cavity for containing the fuse is formed in the plug, and the locking mechanism is used for locking the plug, the socket and the fuse located in the cavity of the plug at the same time. The MSD switch plug and socket combination is a simple MSD switch plug and socket combination, a handle structure on the plug is omitted, the plug and the socket are locked while the fuse is locked, the fuse is disconnected while the plug is taken down, the structure is simpler, and disassembly and assembly are more convenient; meanwhile, the protection shell is arranged, the screw locking position is covered through the protection shell, and waterproof protection on the connecting position of the plug and the socket can be achieved through a simple structure.

Description

Technical Field

[0001] The invention belongs to the technical field of manual maintenance switches, and in particular relates to a screw maintenance switch. Background Art

[0002] Manual maintenance switch, also known as MSD switch, is a high-voltage connector with a fuse or short-circuit copper bar. It is used in electric vehicles for high-voltage maintenance. It can mechanically disconnect the high-voltage connection to protect the safety of maintenance personnel. It can achieve electrical isolation of the high-voltage system and also play a role in short-circuit protection.

[0003] The existing MSD switches have the following assembly methods: the MSD switch is assembled by a socket and a quick-insert plug with a handle, which requires a specific plug spring to achieve quick insertion of the fuse; the socket and the plug are assembled by screw locking, which also requires a specific plug spring to achieve quick insertion of the fuse; the socket and the quick-insert plug with a handle or screw locking are assembled, in which the fuse and the socket are also locked by screws, and then a circle of screws is locked outside the plug shell to achieve waterproofing. The above methods all have the disadvantages of complex structure and high cost, and the fuse needs to be removed separately to remove the plug, which is not user-friendly.

[0004] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] The object of the present invention is to provide a screw maintenance switch, thereby overcoming the defects in the above-mentioned prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a screw maintenance switch, including a plug, a socket and a fuse, and also includes a locking mechanism. The plug is an integrally molded structure, and a cavity for accommodating the fuse is provided inside. The locking mechanism is used to lock the plug, the socket and the fuse located in the cavity of the plug at the same time.

[0007] Further, preferably, the locking mechanism is a screw, and the screw locks the plug, the socket and the fuse simultaneously.

[0008] Further, as a preference, the fuse is provided with a mounting ear, and the screw passes through the plug and the mounting ear to lock the plug and the fuse to the socket at the same time.

[0009] Furthermore, as a preference, a protective shell is provided outside the plug, and the protective shell covers the screws.

[0010] Furthermore, preferably, a protruding structure is provided outside the plug, and the protective shell covers the protruding structure.

[0011] Furthermore, preferably, a locking protrusion is provided on the outer side of the protruding structure, and the locking protrusion clamps the protective shell.

[0012] Furthermore, preferably, a plug seal is provided on the outer wall of the plug.

[0013] Further, preferably, the socket mouth is provided with a socket seal.

[0014] Furthermore, as a preference, a mounting plate is provided in the gap between the plug and the socket, and the mounting plate is used for mounting the socket.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention is a simple MSD switch plug and socket combination, which eliminates the handle structure on the plug, and locks the plug and the socket while locking the fuse. Similarly, the fuse is disconnected when the plug is removed, and the structure is simpler and the disassembly and assembly are more convenient. The present invention is provided with a protective shell, and the screw locking position is covered by the protective shell, so that waterproof protection of the connection between the plug and the socket can be achieved through a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a screw maintenance switch of the present invention; Figure 2 A top view of a screw maintenance switch of the present invention; Figure 3 A cross-sectional view in the AA direction of a top view of a screw maintenance switch of the present invention; Figure 4 A cross-sectional view taken along the BB direction of a top view of a screw maintenance switch of the present invention; Figure 5 It is a schematic diagram of the plug disassembly of a screw maintenance switch of the present invention; Figure 6 A cross-sectional view of a plug of a screw maintenance switch of the present invention; Figure 7 It is a schematic diagram of the socket explosion of a T-shaped energy storage connector of the present invention; Figure 8 is a cross-sectional view of a T-shaped energy storage connector of the present invention; Figure markings: 1-plug, 101-plug mounting hole, 102-protruding structure, 103-locking protrusion, 104-plug seal, 2-socket, 201-socket mounting hole, 202-socket seal, 3-fuse, 301-mounting ear, 4-screw, 5-protective shell, 501-plunger structure, 502-mounting cavity, 6-mounting plate. DETAILED DESCRIPTION

[0017] The specific embodiments of the present invention are described in detail below, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.

[0018] A brief summary of one or more aspects is given below to provide a basic understanding of these aspects. This summary is not an exhaustive overview of all conceived aspects, and is neither intended to identify the key or critical elements of all aspects nor to define the scope of any or all aspects. Its only purpose is to give some concepts of one or more aspects in a simplified form as a prelude to a more detailed description that will be given later.

[0019] Embodiment 1: In traditional technology, the plug of the MSD switch has a handle, and the plug is pulled out by the handle. At the same time, a specific plug spring is required to realize the quick insertion and disconnection function of the fuse. The structure is relatively complex, the cost is high, and the disassembly and assembly is time-consuming.

[0020] The present embodiment provides a screw repair switch, comprising a plug 1, a socket 2 and a fuse 3, and also comprising a locking mechanism. The plug 1 is an integrally formed structure, and a cavity for accommodating the fuse 3 is provided inside. The locking mechanism is used to lock the plug 1, the socket 2 and the fuse 3 located in the cavity of the plug 1 at the same time.

[0021] Specifically, in this embodiment, the locking mechanism is a screw 4, and the screw locks the plug 1, the socket 2 and the fuse 3 at the same time.

[0022] More specifically, in this embodiment, the fuse 3 is provided with a mounting ear 301 , and the screw 4 passes through the plug 1 and the mounting ear 301 to lock the plug 1 and the fuse 3 with the socket 2 at the same time.

[0023] More specifically, in this embodiment, there are two screws 4, and the plug 1 is provided with two plug mounting holes 101 symmetrically along the center line axis in the length direction. Similarly, the socket 2 is provided with two socket mounting holes 201 symmetrically along the center line axis in the length direction. When mating, the two screws 4 pass through the plug mounting holes 101 and the mounting ears 301 of the fuse 3, and then are screwed into the socket mounting holes 201 to achieve locking; when the plug 1 needs to be removed, the screws 4 are loosened, and the plug 1 and the fuse 3 can be pulled out at the same time.

[0024] Specifically, in this embodiment, a protective shell 5 is further provided outside the plug 1 , and the protective shell 5 covers the screws 4 .

[0025] More specifically, in this embodiment, a group of plunger structures 501 are provided on the inner side of the protective shell 5. When the protective shell 5 covers the outside of the plug 1, the group of plunger structures 501 are respectively inserted into the two plug mounting holes 101 of the plug 1 to protect the screw positions.

[0026] More specifically, in this embodiment, the outer walls of the group of plunger structures 501 are also respectively provided with plunger seals 503 for better sealing the plug mounting hole 101 .

[0027] More specifically, in this embodiment, a protruding structure 102 is further provided on the outside of the plug 1 , and the protective shell 5 covers the protruding structure 102 .

[0028] More specifically, in the present embodiment, the two plug mounting holes 101 are symmetrically located outside the protruding structure 102; an installation cavity 502 is also provided on the inner side of the protective shell 5. When the protective shell 5 is covered on the outside of the plug 1, the installation cavity 502 covers the protruding structure 102, and a group of plunger structures 501 are inserted into the two plug mounting holes 101 of the plug 1, which can provide better protection for the plug 1.

[0029] More specifically, in this embodiment, a locking protrusion 103 is further provided on the outer side of the protrusion structure 102, and the locking protrusion 103 clamps the protective shell 5; when the protective shell 5 needs to be opened, it is lifted from the mouth of the protective shell 5 with the help of a tool to loosen the protective shell 5 from the locking protrusion 103.

[0030] Specifically, in this embodiment, the protective shell 5 adopts a hollow design, which can reduce weight and reduce material costs.

[0031] Specifically, in this embodiment, a plug seal 104 is provided on the outer wall of the plug 1 ; a socket seal 202 is provided on the mouth of the socket 2 , so that a better sealing effect can be achieved when the plug 1 and the socket 2 are matched.

[0032] Specifically, in this embodiment, a mounting plate 6 is further provided in the gap between the plug 1 and the socket 2, and the mounting plate 6 is used to install the socket; the mounting plate 6 makes it easier for the user to install and fix the socket 2 to an external device.

[0033] The invention is a simple MSD switch plug and socket combination, which eliminates the handle structure on the plug, locks the plug and the socket while locking the fuse, and disconnects the fuse when the plug is removed, has a simpler structure, and is more convenient to disassemble and assemble.

[0034] At the same time, the present invention is provided with a protective shell, and the screw locking position is covered by the protective shell, so that waterproof protection of the connection between the plug and the socket can be achieved through a simple structure.

[0035] The foregoing description of specific exemplary embodiments of the present invention is for the purpose of illustration and demonstration. These descriptions are not intended to limit the present invention to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present invention and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the present invention and various different selections and changes. The scope of the present invention is intended to be limited by the claims and their equivalents.

Claims

1. A screw maintenance switch, comprising a plug, a socket and a fuse, characterized in that: It also includes a locking mechanism. The plug is an integrally formed structure with a cavity for accommodating the fuse inside. The locking mechanism is used to lock the plug, the socket and the fuse in the cavity of the plug at the same time.

2. A screw repair switch according to claim 1, characterized in that: The locking mechanism is a screw, which locks the plug, the socket and the fuse at the same time.

3. A screw repair switch according to claim 2, characterized in that: The fuse is provided with a mounting ear, and the screw passes through the plug and the mounting ear to lock the plug, the fuse and the socket at the same time.

4. A screw repair switch according to claim 3, characterized in that: A protective shell is also provided outside the plug, and the protective shell covers the screws.

5. A screw repair switch according to claim 4, characterized in that: A protruding structure is also provided outside the plug, and the protective shell covers the protruding structure.

6. A screw repair switch according to claim 5, characterized in that: A locking protrusion is also provided on the outer side of the protruding structure, and the locking protrusion clamps the protective shell.

7. A screw repair switch according to claim 1, characterized in that: The outer wall of the plug is provided with a plug sealing member.

8. The screw repair switch according to claim 1, characterized in that: The socket mouth is provided with a socket seal.

9. The screw repair switch according to claim 1, characterized in that: The gap between the plug and the socket is also provided with a mounting plate, and the mounting plate is used for mounting the socket.

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