Mini-type high-voltage manual maintenance switch

Abstract

The utility model relates to the technical field of electrical switches, in particular to a mini-type high-voltage manual maintenance switch, which comprises a base connector, a plug connector, a matching terminal group and a locking mechanism, and is characterized in that the plug connector comprises a plug upper cover, a plug terminal and a plug support, and the plug terminal is U-shaped; the plug support comprises a frame body, and the frame body is provided with a terminal groove for the plug terminal to pass through and be installed. The plate surface of the frame body is provided with matching grooves matched with terminal positioning columns in the inner wall of the plug upper cover, and the positioning columns penetrate through penetrating holes in the plug terminals and are connected with the matching grooves in a matched mode. According to the utility model, the plug upper cover, the plug support and the plug terminals are locked together, the positioning connection is stable, the terminals are prevented from shaking, the plug support and the base are matched, and reliable connection can still be realized under the condition of vehicle bumping through the locking mechanism in the X-axis direction, the Y-axis direction and the Z-axis direction and omnibearing locking.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical switch technical field, especially a mini high voltage manual maintenance switch. BACKGROUND

[0002] In recent years, energy storage products are developing rapidly, and the battery packs of energy storage cabinets and electric vehicles are also developing towards high energy density and large current. Since the voltage used by the energy storage cabinet and electric vehicle is generally high voltage of not less than 300V, in order to avoid electric shock danger caused by improper operation and damage of electrical components caused by overload and short circuit, a manual maintenance switch (MSD) needs to be installed on the main line of the energy storage cabinet and vehicle circuit.

[0003] The MSD plays a role in protecting the power supply in the electric vehicle circuit. In the event of an emergency or battery maintenance installation, the MSD can be disconnected in time to disconnect the current of the battery pack, thereby effectively avoiding electric shock caused by improper operation of maintenance personnel, and further protecting the personal safety of maintenance personnel.

[0004] In the prior art, an MSD is generally added to the positive or negative output of the battery module to manually disconnect the high-voltage circuit. However, when the customer has strict requirements, both the positive and negative terminals need to be disconnected to ensure safety, so two MSDs need to be installed. However, due to the space limitations of the energy storage cabinet and passenger car, only one MSD can be installed in the battery pack. Therefore, the MSDs on the market cannot meet the functional and spatial requirements at the same time, and the MSDs in the prior art have stable connection of the externally installed handle locking connector, internal terminal plug-in and connector shell plug-in. In order to ensure the stability of the connection, the terminal plug-in is difficult, and there is still a certain risk in the operation safety.

[0005] Based on the problems in the prior art, the utility model provides a mini high voltage manual maintenance switch. UTILITY MODEL CONTENTS

[0006] The utility model aims at: providing a mini high voltage manual maintenance switch, to solve the technical problems in the prior art that the product is large in appearance and difficult to realize more product series and parallel connection and power conversion in a certain space.

[0007] The technical scheme of the utility model is: a mini high voltage manual maintenance switch, comprising a base connector, a plug connector, a corresponding set of matching terminals arranged in the base connector and the plug connector, and a locking mechanism arranged between the plug connector and the base connector, the plug connector comprises a plug upper cover and a plug terminal, the plug upper cover is internally provided with a plug bracket, and the plug terminal is arranged in a U shape.

[0008] The plug support comprises a frame body, and a terminal slot is arranged on the frame body and used for penetratingly mounting the plug terminal;

[0009] A matching slot is arranged on the frame body plate surface and matched with the terminal positioning column in the inner wall of the plug upper cover, and the terminal positioning column penetrates the perforation on the plug terminal and is matched and connected with the matching slot.

[0010] Preferably, a plurality of concave-convex grooves matched with the plug upper cover inner wall are arranged on the frame body plate surface, and a first buckling block is arranged on the frame body edge frame edge and matched with the first buckling slot arranged on the plug upper cover.

[0011] Preferably, the locking mechanism comprises an outer locking piece and an inner locking piece;

[0012] The inner locking piece is arranged on the frame body and guides and limits the base connector and the plug connector in the Z-axis direction; the outer locking piece is arranged on the connector outer peripheral side and locks and fixes the base connector and the plug upper cover in the X-axis direction and the Y-axis direction.

[0013] Preferably, the inner locking piece comprises a locking needle matched with a locking head, the locking head is assembled in the base of the base connector, and the locking needle is detachably assembled in the guide cylinder at the bottom of the frame body.

[0014] Preferably, the base comprises a butt joint sleeve and a support boss integrally arranged at the bottom of the butt joint sleeve.

[0015] A terminal chamber corresponding to the base terminal, a locking head chamber corresponding to the guide cylinder and a support chamber corresponding to the plug support are arranged in the butt joint sleeve; the butt joint end of the base terminal faces one end of the plug terminal.

[0016] Preferably, the outer locking piece is a frame with a half-enclosing structure as a whole, a sleeving groove is arranged on the outer locking piece, a locking shaft matched with the sleeving groove is arranged on a pair of side walls of the butt joint sleeve, and a guide groove for moving the locking shaft is arranged on the side wall of the plug upper cover.

[0017] Preferably, a pullable elastic lock buckle is arranged on the outer locking piece, and the elastic lock buckle is matched and docked with the buckle on the plug upper cover.

[0018] Preferably, V-shaped chamfers are configured at the two arm ends of the plug terminal.

[0019] Preferably, a second lock buckle is arranged on at least another side wall of the butt joint sleeve and matched and connected with the inner side wall of the plug upper cover.

[0020] Compared with the prior art, the plug support has the following advantages:

[0021] (1) The utility model discloses a plug support in the plug upper cover, assembles plug terminal, plug terminal sets up U shape, through the buckle groove, buckle block, clamping groove, buckle between plug upper cover and plug support, the plug terminal, plug upper cover and plug support are locked together, plug support and base are matched, set up inner locking piece, lock, keep the stable connection, plus the outer locking piece (the frame of half-enclosed structure) of connector outside and the connecting shaft form the external locking and fix, lock in all directions in X, Y, Z axle direction, realize reliable electric connection.

[0022] (2) Plug terminal sets up U shape structure, and two arms are made into V shape, and it is convenient to plug and unplug, and the terminal positioning column on plug upper cover is connected with plug support after penetrating plug terminal, keeps the stable plug positioning connection, avoids shaking, keeps stable under the bumpy condition of vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0023] The utility model will be further described in connection with the drawings and examples:

[0024] Figure 1 It is the explosion view of manual maintenance switch of the utility model;

[0025] Figure 2 It is the structure schematic drawing of manual maintenance switch assembly butt joint state of the utility model;

[0026] Figure 3 It is the partial explosion schematic drawing of plug connector of the utility model;

[0027] Figure 4 It is the assembly connection schematic drawing of plug terminal and plug support of the utility model;

[0028] Figure 5 It is the structure schematic drawing of plug support of the utility model;

[0029] Figure 6 It is the internal structure schematic drawing of plug upper cover of the utility model;

[0030] Figure 7 It is the three-dimensional axonometric drawing of base of the utility model;

[0031] Figure 8 It is the overhead plan of base of the utility model;

[0032] Figure 9 It is the cross section schematic drawing of base connector of the utility model;

[0033] Wherein: 1, plug connector;2, base connector;3, locking mechanism;4, plug terminal;5, plug waterproof sealing ring;

[0034] 11. Plug cover; 12. Plug bracket;

[0035] 21. Base; 22. Base terminal; 31. Outer locking component; 32. Inner locking component; 33. Elastic latch; 40. Through hole;

[0036] 111. First latching groove; 112. Terminal positioning post; 113. Guide groove;

[0037] 121. Frame body; 122. Terminal slot; 123. First fastener block; 124. Matching slot; 125. Guide cylinder; 126. Sealing slot;

[0038] 211. Connecting sleeve; 212. Support boss; 213. Lock head chamber; 214. Bracket chamber; 215. Locking shaft; 216. Terminal chamber; 217. Second latch;

[0039] 311. Set slot; 321. Locking pin; 322. Lock head. Detailed Implementation

[0040] The present invention will be further described in detail below with reference to specific embodiments:

[0041] like Figure 1 As shown, a mini high-voltage manual maintenance switch includes a base connector 2, a plug connector 1, and a locking mechanism 3. The housings of the base connector 2 and the plug connector 1 are plugged into each other, and their internal terminal groups are mated together. The locking mechanism 3 locks the base connector 2 and the plug connector 1 in the mated state. A schematic diagram of the structure of the base connector 2 and the plug connector 1 in the locked state after mating is shown in the attached diagram. Figure 2 .

[0042] The plug connector 1 includes a plug cover 11 and plug terminals 4. The plug cover 11 contains a plug bracket 12, as shown in the attached figure. Figure 3 As shown, the plug terminal 4 is configured with a bent U-shaped opening facing downwards. A pair of terminal slots 122 are provided on the frame 121 of the plug bracket 12 for the plug terminal 4 to be snapped onto them. After the plug bracket 12 and the plug terminal 4 are assembled, refer to the attached diagram for the bottom side view. Figure 4 As shown.

[0043] As attached Figure 1 As shown, a guide cylinder 125 is integrally connected to the bottom of the frame 121. The bottom of the guide cylinder 125 is open, and a locking pin 321 is installed inside. The locking pin 321 and the lock head 322 in the base connector 2 are mated together to form an inner locking member 32, which forms a locking barrier for the connector inside, ensuring a stable connection between the plug bracket 12 and the base connector 2.

[0044] As attached Figure 5As shown, the same embodiment of the plug holder 12 is provided, the plate surface of the frame body 121 is overall quadrangular, with a notch on each side, and a first buckle 123 is formed on the outer side wall of the notch, which is matched with the first buckle groove 111 on the plug upper cover 11 to lock the plug holder 12 and the plug upper cover 11. The upper surface of the four sides is provided with a sealing groove 126 for installing the plug waterproof sealing ring 5; when the plug holder 12 is assembled inside the plug upper cover 11, the four sides of the plug holder 12 are sealed and connected with the side wall of the four sides of the plug upper cover 11 through the plug waterproof sealing ring 5.

[0045] The inner top wall of the plug upper cover 11 and the upper plate surface of the frame body 121 are provided with corresponding connecting concave-convex grooves, which are matched and positioned, and are limited and locked, as shown in the accompanying Figure 6 As shown, a pair of matching grooves 124 are arranged in the matching concave-convex grooves of the plate surface of the frame body 121, which are matched with the terminal positioning column 112 inside the plug upper cover 11, and when installed, the terminal positioning column 112 penetrates the through hole 40 on the plug terminal 4 and matches with the matching groove 124, cooperates with the surrounding first buckle 123, first buckle groove 111, plate surface, wall surface matching concave-convex grooves and plug waterproof sealing ring 5, so as to assemble and fix the plug upper cover 11, plug terminal 4 and plug holder 12 together, the connection is stable, and multiple locking inside the plug connector is realized.

[0046] As shown in the accompanying Figure 7 As shown, the base connector 2 includes a base 21 and a base terminal 22, the base 21 is an integral structure and is processed by injection molding process. The base 21 includes a butt joint sleeve 211 and a support boss 212 integrally arranged at the bottom of the butt joint sleeve 211. The base terminal 22 is integrally fixed on the support boss 212 by self-tapping screws, the self-tapping screws protrude from the bottom of the support boss 212 and are used to fix the base connector 2 to the corresponding device or equipment.

[0047] As shown in the accompanying Figure 8 As shown, the butt joint sleeve 211 is provided with a terminal chamber 216 corresponding to the installation of the base terminal 22, a lock head chamber 213 corresponding to the installation of the guide cylinder 125, and a support chamber 214 corresponding to the installation of the plug holder 12; the butt joint end of the base terminal 22 faces one end of the plug terminal 4, as shown in the accompanying Figure 9 As shown, the partial cross-sectional view of the base connector 2, the base terminal 22 is provided with a pair of left and right terminals corresponding to the positive and negative terminals respectively, in case of emergency or during battery maintenance installation, the manual maintenance switch is disconnected in time to disconnect the current of the battery pack, thereby effectively avoiding electric shock caused by improper operation of maintenance personnel, playing a role in protecting the power supply in the electric vehicle circuit, and also ensuring the personal safety of the maintenance personnel.

[0048] The two arm end portions of the plug terminal 4 are configured with V-shaped chamfers (inverted triangular shape), and C angles are made on the surface of the plug terminal 4, so that the problem of difficult insertion of the terminal pair is solved.

[0049] In addition to the aforementioned inner locking piece 32, the locking mechanism 3 further comprises an outer locking piece 31 arranged on the outer side of the connector, which is a frame of a semi-enclosing structure, as shown in the accompanying drawings Figure 3 , as shown in the accompanying drawings Figure 2 The outer locking piece 31 is provided with a sleeving groove 311, and a locking shaft 215 matched with the sleeving groove 311 is arranged on a pair of side walls of the mating sleeve 211; a guide groove 113 for the movement of the locking shaft 215 is arranged on the side wall of the plug upper cover 11, so that the outer locking piece 31 is locked and fixed to the base 21 and the plug upper cover 11 in the X-axis direction and the Y-axis direction. The inner locking piece 32 guides and limits the base connector 2 and the plug connector 1 in the Z-axis direction, so as to realize the all-round locking and fixing of the connector and maintain the stability of the connection.

[0050] A mounting groove in the Z-axis direction is arranged on the frame of the outer locking piece 31, and a pluggable elastic lock 33 is mounted on the mounting groove; the mounting groove is open on the side facing the plug upper cover 11, and the elastic lock 33 is matched and connected with the buckle on the plug upper cover 11; after the elastic lock 33 is assembled, the bottom abuts against the supporting boss 212 and is limited and fixed.

[0051] The locking shaft 215 is arranged on one pair of edges of the mating sleeve 211, and a matched guide strip and guide groove or a matched buckle and buckle groove are arranged on the other pair of edges to lock the mating state of the base 21 and the plug upper cover 11. As shown in the accompanying drawings Figure 7 , on the other pair of edges of the mating sleeve 211, a second lock 217 is arranged on one side to be matched and connected with the inner side wall of the plug upper cover 11, and a spaced guide strip and guide groove are arranged on the other side to be matched with the plug upper cover 11.

[0052] The utility model belongs to the electrical circuit protection technical field, especially belongs to the electrical switch technical field, and is applied to the related device in the automobile and energy storage cabinet electrical circuit.

[0053] The manual maintenance switch of the utility model, when the plug is pulled out, two plug copper bars in the plug body are separated from the first socket copper bar group and the second socket copper bar group on the socket body, so that the positive pole loop and the negative pole loop of the battery module are simultaneously disconnected, the safety factor is higher, and the reliability is stronger; the plug terminal structure is arranged in an inverted triangular shape, and the terminal surface is made into a C angle, so that the problem of difficult insertion when the product is closed is solved; the elastic lock is added to the outer locking piece, secondary locking is carried out, and the use safety is ensured.

[0054] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the examples should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A mini high voltage maintenance switch, comprising a base connector, a plug connector, a set of mating terminals arranged in the base connector and the plug connector, and a locking mechanism arranged between the plug connector and the base connector, characterized in that, The plug connector comprises a plug upper cover and a plug terminal, the plug upper cover is internally provided with a plug support, and the plug terminal is provided in a U shape; The plug support comprises a frame body, and a terminal slot for mounting the plug terminal is arranged on the frame body; A matching groove is arranged on the plate surface of the frame body and matched with a terminal positioning column in the inner wall of the plug upper cover, and the terminal positioning column penetrates through the perforation on the plug terminal and is matched and connected with the matching groove.

2. A mini high voltage maintenance switch according to claim 1, characterized in that A plurality of concave-convex grooves matched with the inner wall of the plug upper cover are arranged on the plate surface of the frame body, and a first buckling block is arranged on the edge of the frame body, and the first buckling block is matched with a first buckling groove arranged on the plug upper cover.

3. A mini high voltage maintenance switch according to claim 2, characterized in that The locking mechanism comprises an outer lock and an inner lock; The inner lock is arranged on the frame body and guides and limits the base connector and the plug connector in the Z-axis direction; the outer lock is arranged on the outer periphery of the connector and locks and fixes the base connector and the plug upper cover in the X-axis direction and the Y-axis direction.

4. A mini high voltage maintenance switch according to claim 3, wherein, The inner lock comprises a locking needle and a lock head matched with each other, the lock head is assembled in the base of the base connector, and the locking needle is detachably assembled in the guide cylinder at the bottom of the frame body.

5. A mini high voltage maintenance switch according to claim 4, characterized in that The base comprises a butt joint sleeve and a support boss integrally arranged at the bottom of the butt joint sleeve. The butt joint sleeve is provided with a terminal chamber corresponding to the mounting of the base terminal, a lock head chamber corresponding to the mounting of the guide cylinder, and a support chamber corresponding to the mounting of the plug support; the butt joint end of the base terminal faces one end of the plug terminal.

6. A mini high voltage maintenance switch according to claim 5, wherein, The outer lock is a frame with a half-enclosing structure, the outer lock is provided with a sleeving groove, a locking shaft matched with the sleeving groove is arranged on a pair of side walls of the butt joint sleeve, and a guide groove for the movement of the locking shaft is arranged on the side wall of the plug upper cover.

7. A mini high voltage maintenance switch according to claim 3, wherein, A pullable elastic lock is arranged on the outer lock, and the elastic lock is matched and docked with a buckle on the plug upper cover.

8. A mini high voltage maintenance switch according to claim 1, wherein, The two arm ends of the plug terminal are configured with V-shaped chamfers.

9. A mini high voltage maintenance switch according to claim 5, wherein, A second lock is arranged on at least one of the side walls of the butt joint sleeve and matched and connected with the inner side wall of the plug upper cover.

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