Flash barrier and switch cabinet plug connector

Abstract

The utility model relates to the technical field of low-voltage electrical equipment, in particular to a flash barrier and a switch cabinet plug connector. The plug connector of the switch cabinet comprises a shell and a flash barrier, the flash barrier comprises a plate body and a plug-in structure, the plate body comprises a first side edge and a second side edge which are oppositely arranged in the first direction, and the plug-in structure is arranged on the first side edge and used for being matched with the shell in a plug-in mode; wherein the plug-in structure comprises a clamping block, a first plug-in guide part and a second plug-in guide part which are sequentially arranged along a second direction, and the second direction is perpendicular to the first direction; the first insertion guide part comprises a first guide end and a second guide end, the end face of the first guide end is smaller than that of the second guide end, and the second guide end is connected with the clamping block; the second insertion guide part is connected to the first guide end, and the section of the second insertion guide part at any position in the second direction is not larger than the end face of the first guide end; a first cavity is formed in the middle of the clamping block, so that the clamping block can elastically deform towards the first cavity and elastically abut against the shell.

Description

Technical Field

[0001] The present application relates to the technical field of low-voltage electrical equipment, and in particular to an arc isolation plate and a switch cabinet connector. Background Art

[0002] Drawer-type switch cabinets generally have a closed cabinet body, and the electrical components of the incoming and outgoing line circuits are installed in removable drawers. Each drawer has at least one connector, which includes a housing and an arc-isolating plate connected to the housing. The arc-isolating plate is made of insulating polymer materials such as plastic. In order to facilitate assembly and maintenance and replacement, the housing and the arc-isolating plate are generally detachably connected. For example, a slot is provided on the housing, and the arc-isolating plate is plugged into the slot. The existing connection method has high requirements on dimensional accuracy. In order to ensure the stability of the arc-isolating plate and prevent the arc-isolating plate from loosening and falling off, the size of the arc-isolating plate needs to be slightly larger than the size of the slot, which makes it difficult to smoothly insert the arc-isolating plate into the slot, and the assembly difficulty is high.

[0003] How to reduce the difficulty of assembling arc isolation plates and improve the installation stability of arc isolation plates is one of the problems to be solved urgently in this field. Utility Model Content

[0004] The present application aims to provide an arc isolation plate and a switch cabinet connector to reduce the difficulty of assembling the arc isolation plate and improve the installation stability of the arc isolation plate.

[0005] The embodiment of the present application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides an arc isolation plate, comprising:

[0007] The plate body comprises a first side edge and a second side edge which are arranged opposite to each other along a first direction;

[0008] A plug-in structure, disposed on the first side, for plugging and mating with the housing;

[0009] Wherein, the plug-in structure comprises a card block, a first plug-in guide portion and a second plug-in guide portion arranged in sequence along a second direction, and the second direction is perpendicular to the first direction;

[0010] The first plug-in guide portion includes a first guide end and a second guide end, the end surface of the first guide end is smaller than the end surface of the second guide end, and the second guide end is connected to the clamping block;

[0011] The second plug-in guide portion is connected to the first guide end, and a cross section of the second plug-in guide portion at any position in the second direction is not larger than an end surface of the first guide end;

[0012] A first cavity is arranged in the middle of the card block, so that the card block can be elastically deformed toward the first cavity, thereby elastically abutting against the shell.

[0013] In one embodiment of the present application, the cross-section of the card block in the second direction is trapezoidal, the smaller end and the larger end of the card block are arranged opposite to each other along the first direction, and the smaller end of the card block is connected to the plate body.

[0014] In an embodiment of the present application, a groove is cut from the larger end of the block toward the smaller end along the first direction to form the first cavity, and a pair of abutting arms are formed on both sides of the first cavity.

[0015] In an embodiment of the present application, an end portion of each of the supporting arms extends along the first direction to form an extension portion.

[0016] In one embodiment of the present application, a guiding slope is formed between the first guiding end and the second guiding end.

[0017] In one embodiment of the present application, the first plug-in guide portion is provided with a second cavity, the second cavity is arranged close to the second guide end, the second cavity is connected to the first cavity, and the second cavity gradually shrinks toward the first guide end.

[0018] In an embodiment of the present application, the blocking block is disposed at one end of the plate body in the second direction, and the second plug-in guide portion extends to the other end of the plate body in the second direction.

[0019] In one embodiment of the present application, a positioning boss is formed at one end of the clamping block away from the first plug-in guide portion.

[0020] In one embodiment of the present application, the positioning boss includes at least two layers connected side by side along the second direction.

[0021] In a second aspect, an embodiment of the present application provides a switch cabinet connector, which includes:

[0022] A shell having an interface on one side and a clamping structure on the other side;

[0023] At least two contact units, each of which comprises a contactor and a wiring terminal, wherein the contactor is disposed in the housing and corresponds to the interface, and one end of the wiring terminal is connected to the contactor and the other end extends from the other side of the housing;

[0024] At least one arc isolation plate as described in any one of the first aspects is provided between every two adjacent connecting terminals, and the plug-in structure of the arc isolation plate has a clamping block, and the clamping block cooperates with the clamping structure.

[0025] Beneficial effects of this application:

[0026] A plug-in structure is provided on the arc isolation plate, the plug-in structure includes a card block, and a first cavity is provided in the middle of the card block, so that the card block can be elastically deformed toward the first cavity under external extrusion, thereby reducing the difficulty of assembling the arc isolation plate, and can elastically abut against the outside after assembly, ensuring the installation stability of the arc isolation plate. At the same time, the plug-in structure also includes a plug-in guide portion, the plug-in guide portion is connected to the card block, and the outer surface of the plug-in guide portion forms a guiding inclined surface, and a second cavity is provided in the middle of the plug-in guide portion, so that the card block is easier to enter the clamping structure, and the assembly difficulty is further reduced without affecting the installation stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 A three-dimensional schematic diagram of a switch cabinet connector provided in an embodiment of the present application;

[0029] Figure 2 An enlarged view of a clamping structure provided in one embodiment of the present application;

[0030] Figure 3 A three-dimensional schematic diagram of an arc isolation plate provided in an embodiment of the present application;

[0031] Figure 4 An enlarged view of a card block provided in an embodiment of the present application;

[0032] Figure 5 A view of the arc isolation plate provided in one embodiment of the present application along a first direction and observed from the side where the plug-in structure is located (a plan view of the plug-in structure);

[0033] Figure 6 A cross-sectional view of a card block provided in an embodiment of the present application ( Figure 5 CC cross-section diagram);

[0034] Figure 7 A cross-sectional view of a first plug-in guide portion provided in an embodiment of the present application ( Figure 5 DD cross-section diagram);

[0035] Figure 8 A cross-sectional view of a second plug-in guide portion provided in an embodiment of the present application ( Figure 5 EE cross-section diagram);

[0036] Fig. 9 A schematic diagram of the cooperation between the card block of the plug-in structure and the clamping structure provided in one embodiment of the present application;

[0037] Fig.10 A schematic diagram of the cooperation between a card block and a clamping structure of a plug-in structure provided in another embodiment of the present application.

[0038] Icon: 1-shell, 1a-first part; 1b-second part; 11-interface, 12-clamping structure, 121-clamping arm, 2-contact unit, 21-contactor, 22-connecting terminal, 3-arc isolation plate, 31-plate body, 311-first side; 312-second side; 32-plug-in structure, 321-block, 3211-first cavity, 3212-holding arm, 3213-extension part, 322-first plug-in guide part, 3221-first guide end, 3222-second guide end, 3223-guide slope, 3224-second cavity, 323-second plug-in guide part, 324-positioning boss, 325-connecting part; X-first direction, Y-second direction. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0042] Drawer-type switch cabinets generally have a closed cabinet body, and the electrical components of the incoming and outgoing line circuits are installed in a removable drawer. Each drawer has at least one connector, which includes a shell and a plurality of contact units. The shell is located outside the drawer and connected to the outer shell of the drawer. Each contact unit includes a contactor and a terminal. The contactor is arranged in the shell to be electrically connected to the cabinet body. One end of the terminal is connected to the contactor, and the other end extends toward the inside of the drawer and extends out of the shell so as to be electrically connected to the electrical components in the drawer. Among them, the connector is generally also provided with an arc isolation plate, which is connected to the shell to separate adjacent terminals. The arc isolation plate is generally made of insulating polymer materials such as plastic to play an insulating isolation role.

[0043] At present, in order to facilitate assembly and maintenance and replacement, the shell and the arc isolation plate are generally detachably connected, for example, a slot is set on the shell, and the arc isolation plate is plugged into the slot. In order to ensure the stability of the arc isolation plate and prevent the arc isolation plate from loosening and falling off, the size of the arc isolation plate needs to be slightly larger than the size of the slot. However, this makes it difficult to smoothly insert the arc isolation plate into the slot, and the assembly is difficult.

[0044] In order to achieve smooth and stable assembly, the existing connection method has high requirements on the accuracy of the size. If it is too large, it cannot be assembled, and if it is too small, there is a greater risk of loosening and falling off, which is difficult and costly to manufacture. Therefore, how to reduce the difficulty of assembling the arc isolation plate and improve the installation stability of the arc isolation plate is one of the problems to be solved in this field.

[0045] In view of this, an embodiment of the present application provides a technical solution, in which a plug-in structure is arranged on the arc isolation plate, and the plug-in structure includes a card block, and a first cavity is arranged in the middle of the card block, so that the card block can be elastically deformed toward the first cavity under external pressure, thereby reducing the difficulty of assembling the arc isolation plate, and can elastically abut against the outside after assembly is completed, thereby ensuring the installation stability of the arc isolation plate.

[0046] like Figure 1 As shown, an embodiment of the present application provides a switch cabinet connector, which includes a housing 1, a contact unit 2 and an arc isolation plate 3.

[0047] The contact unit 2 includes a contactor 21 and a terminal 22 . The contactor 21 is disposed in the housing 1 . One side of the housing 1 is provided with an interface 11 for exposing the contactor 21 . One end of the terminal 22 is connected to the contactor 21 , and the other end of the terminal 22 extends from the other side of the housing 1 .

[0048] There are multiple contact units 2 , and the arc isolation plate 3 is arranged between two adjacent connection terminals 22 .

[0049] In some embodiments, the housing 1 includes a first portion 1a and a second portion 1b, and the first portion 1a and the second portion 1b are relatively matched along the second direction Y to form a space for accommodating the contact unit between the first portion 1a and the second portion 1b.

[0050] The relative matching manner of the first part 1a and the second part 1b along the second direction Y can be: buckling, in which matching snap-fit ​​structures are respectively provided on the first part 1a and the second part 1b to achieve buckling; bonding, in which the first part 1a and the second part 1b are relatively fitted and then connected by gluing, melting, etc.; connecting by a connecting piece, in which the first part 1a and the second part 1b are relatively fitted and then connected by bolts, screws, etc.

[0051] The first part 1a and the second part 1b both have a notch on one side in the first direction X. When the first part 1a and the second part 1b are relatively matched along the second direction Y, the notch of the first part 1a corresponds to the notch of the second part 1b and forms an interface 11.

[0052] like Figure 2 As shown, the housing 1 is provided with a clamping structure 12 for fixing the arc isolation plate 3 .

[0053] Optionally, the clamping structure 12 is disposed on the other side of the first portion 1 a or the second portion 1 b in the first direction X.

[0054] In some embodiments, the clamping structure 12 is two clamping arms 121 disposed outside the housing 1 , and the opposing surfaces of the two clamping arms 121 form two clamping surfaces.

[0055] Optionally, the distance between the free ends of the two clamping arms 121 is smaller than the distance between the fixed ends to improve the clamping and anti-slipping effect. The "fixed end" of the clamping arm 121 refers to the end of the clamping arm 121 fixedly connected to the housing 1, and the "free end" of the clamping arm 121 refers to the end of the clamping arm 121 away from the housing 1. In other words, the two clamping surfaces of the two clamping arms 121 form a trapezoidal groove with the surface of the housing 1.

[0056] In other embodiments, the clamping structure 12 may also be a slot disposed on the surface of the housing 1, and a pair of side walls of the slot are used to clamp the housing 1. Optionally, the slot is configured as a trapezoidal slot to improve the anti-slip effect.

[0057] like Figure 3 As shown, the arc isolation plate 3 includes a plate body 31 and a plug-in structure 32 . The plate body 31 includes a first side edge 311 and a second side edge 312 that are oppositely arranged along a first direction X. The plug-in structure 32 is arranged on the first side edge 311 .

[0058] like Figure 4As shown, the plug-in structure 32 includes a clamping block 321 , and a first cavity 3211 is disposed in the middle of the clamping block 321 .

[0059] In the free state, the size of the block 321 is slightly larger than the space of the clamping structure 12 (i.e., between the two clamping arms 121, or in the slot), and the block 321 can be elastically deformed toward the first cavity 3211 under the extrusion of the clamping structure 12, so that the block 321 can enter the clamping structure 12, and elastically abut against the clamping structure 12 after assembly is completed, thereby ensuring the installation stability of the arc isolation plate 3.

[0060] The structure and shape of the clamping block 321 are various, as long as it has a deformable first cavity 3211 so that the clamping block 321 can elastically abut against the clamping structure 12 .

[0061] In some embodiments, Figure 5 and Figure 6 As shown, the block 321 is trapezoidal, the smaller end and the larger end of the block 321 are arranged opposite to each other along the first direction X, and the smaller end of the block 321 is connected to the plate body 31 so that the arc isolation plate 3 is not easy to fall out along the first direction X.

[0062] In some embodiments, Figure 6 As shown, along the first direction X, a groove is formed from the larger end of the block 321 toward the smaller end to form a first cavity 3211, and a pair of abutting arms 3212 are formed on both sides of the first cavity 3211. The cross section of the block 321 is V-shaped, and the two arms of the V-shape form the abutting arms 3212. The larger end of the block 321 is the position where the abutting arms 3212 are easily elastically deformed, which makes the block 321 easier to deform and assemble, and can better elastically abut in the clamping structure 12, and has better assembly stability.

[0063] In some embodiments, the end of each abutting arm 3212 extends along the first direction X to form an extension portion 3213. By providing the extension portion 3213, the relative force between the clamping block 321 and the clamping structure 12 can be further increased. In addition, by providing the extension portion 3213, it is ensured that the size of the clamping block 321 in the first direction X is greater than or equal to the size of the clamping structure 12 in the first direction X, thereby further improving the assembly stability.

[0064] The first direction X is perpendicular to the thickness direction of the plate body 31, that is, the first direction X is parallel to the plate surface of the plate body 31. Fig. 9 As shown, the plug-in structure 32 is disposed on the side of the plate body 31 where the first side edge 311 is located.

[0065] Of course, in other embodiments, the plug-in structure 32 may also be disposed on the surface of the plate body 31 and close to the first side edge 311. The embodiment of the present application does not limit this, and this arrangement is also included in the inventive concept of the present application. For example, Fig.10 As shown, the plug-in structure 32 has a connecting portion 325 , which is connected to the board surface of the board body 31 and close to the first side edge 311 through the connecting portion 325 .

[0066] In some embodiments, Figure 5 As shown, the plug-in structure 32 further includes a first plug-in guide portion 322 for guiding the clamping block 321 to enter the clamping structure 12 of the housing 1 .

[0067] The first plug-in guide portion 322 and the clamping block 321 are arranged along the second direction Y, and the second direction Y is perpendicular to the first direction X, that is, the arc isolation plate 3 is plugged into the clamping structure 12 along the second direction Y, and the first plug-in guide portion 322 enters the clamping structure 12 first, and then the clamping block 321 enters the clamping structure 12.

[0068] The first direction X and the second direction Y are both perpendicular to the thickness direction of the plate body 31 , so that the arc isolation plate 3 moves along the gap between two adjacent wiring terminals 22 during insertion, and is not easy to interfere with the adjacent wiring terminals 22 during the insertion process.

[0069] like Figure 5 As shown, the first plug-in guide portion 322 includes a first guide end 3221 and a second guide end 3222 opposite to each other along the second direction Y, the second guide end 3222 is connected to the block 321, the end face of the first guide end 3221 is smaller than the end face of the second guide end 3222, and a guide slope 3223 is formed between the first guide end 3221 and the second guide end 3222, and the guide slope 3223 is smoothly connected to the surface of the block 321.

[0070] The first plug-in guide portion 322 and its guiding slope 3223 not only guide the block 321 to enter the clamping structure 12, but also guide the two clamping arms 121 to elastically open in the embodiment where the clamping structure 12 is two oppositely arranged clamping arms 121.

[0071] Optionally, the first plug-in guide portion 322 is provided with a second cavity 3224, and the second cavity 3224 is arranged near the second guide end 3222, and the second cavity 3224 is connected to the first cavity 3211 of the block 321, so that the second guide end 3222 of the first plug-in guide portion 322 can be elastically deformed and more easily enter the clamping structure 12, wherein the second cavity 3224 gradually shrinks toward the direction of the first guide end 3221.

[0072] In some embodiments, the plug structure 32 further includes a second plug guide 323 connected to the first guide end 3221. The cross section of the second plug guide 323 at any position in the second direction Y is not larger than the end surface of the first guide end 3221.

[0073] The block 321 is arranged at one end of the plate body 31 in the second direction Y, and the second plug-in guide portion 323 extends to the other end of the plate body 31 in the second direction Y, so that the arc isolation plate 3 can fit with the surface of the shell 1 through the plug-in structure 32, thereby reducing the gap between the arc isolation plate 3 and the shell 1 and improving safety.

[0074] Correspondingly, the clamping structure 12 is disposed at one end of the housing 1 to correspond to the position of the clamping block 321 .

[0075] Optionally, in the first direction X, the width of the end of the plug-in structure 32 away from the plate body 31 is greater than the thickness of the plate body 31. Figure 6 As shown, in the first direction X, the larger end of the block 321 is larger than the thickness of the plate 31; Figure 7 As shown, in the first direction X, the width of the end of the first plug-in guide portion 322 away from the plate body 31 is greater than the thickness of the plate body 31; Figure 8 As shown, in the first direction X, the width of the second plug guide 323 away from the plate 31 is greater than the thickness of the plate 31. By so configuring, the side of the plug structure 32 facing the housing 1 is enlarged, so that the contact area between the plug structure 32 and the housing 1 is increased, thereby improving safety.

[0076] In some embodiments, a positioning boss 324 is formed at one end of the clamping block 321 away from the first plug-in guide portion 322 , and the positioning boss 324 has a positioning function to prevent the clamping block 321 from falling out along the second direction Y.

[0077] Optionally, the positioning boss 324 includes two layers connected side by side along the second direction Y. On the one hand, the two layers of positioning bosses 324 play a double insurance role in preventing the positioning bosses 324 from coming out along the second direction Y. On the other hand, the two layers of positioning bosses 324 have better structural strength and are not easily damaged.

[0078] In some usage scenarios of the switch cabinet connector, the second direction Y may be along the gravity direction, and the positioning boss 324 is located at the upper end of the plug-in structure 32 to make the arc isolation plate 3 more stable.

[0079] In the description of this application, it should be noted that if the terms "middle", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, if the terms "first", "second", etc. appear in the description of this application, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0080] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0081] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An arc isolation plate, plugged into the housing of a switch cabinet connector, characterized in that: include: The plate body comprises a first side edge and a second side edge which are arranged opposite to each other along a first direction; A plug-in structure, disposed on the first side, for plugging and mating with the housing; Wherein, the plug-in structure comprises a card block, a first plug-in guide portion and a second plug-in guide portion arranged in sequence along a second direction, and the second direction is perpendicular to the first direction; The first plug-in guide portion includes a first guide end and a second guide end, the end surface of the first guide end is smaller than the end surface of the second guide end, and the second guide end is connected to the clamping block; The second plug-in guide portion is connected to the first guide end, and a cross section of the second plug-in guide portion at any position in the second direction is not larger than an end surface of the first guide end; A first cavity is arranged in the middle of the card block, so that the card block can be elastically deformed toward the first cavity, thereby elastically abutting against the shell.

2. The arc isolation plate according to claim 1, characterized in that: The cross section of the card block in the second direction is trapezoidal, the smaller end and the larger end of the card block are arranged opposite to each other along the first direction, and the smaller end of the card block is connected to the plate body.

3. The arc isolation plate according to claim 2, characterized in that: Along the first direction, a groove is cut from the larger end toward the smaller end of the block to form the first cavity, and a pair of abutting arms are formed on both sides of the first cavity.

4. The arc isolation plate according to claim 3, characterized in that: An end portion of each of the supporting arms extends along the first direction to form an extension portion.

5. The arc isolation plate according to claim 1, characterized in that: A guiding slope is formed between the first guiding end and the second guiding end.

6. The arc isolation plate according to claim 1, characterized in that: The first plug-in guide portion is provided with a second cavity, the second cavity is arranged close to the second guide end, the second cavity is communicated with the first cavity, and the second cavity gradually shrinks toward the first guide end.

7. The arc isolation plate according to claim 1, characterized in that: The clamping block is disposed at one end of the plate body in the second direction, and the second plugging guide portion extends to the other end of the plate body in the second direction.

8. The arc isolation plate according to claim 1, characterized in that: One end of the clamping block away from the first plug-in guide portion forms a positioning boss.

9. The arc isolation plate according to claim 8, characterized in that: The positioning boss includes at least two layers connected side by side along the second direction.

10. A switch cabinet connector, characterized in that: include: A shell having an interface on one side and a clamping structure on the other side; At least two contact units, each of which comprises a contactor and a terminal, wherein the contactor is disposed in the housing and corresponds to the interface, and one end of the terminal is connected to the contactor and the other end extends from the other side of the housing; At least one arc isolation plate as described in any one of claims 1 to 9, at least one arc isolation plate is provided between every two adjacent wiring terminals, the plug-in structure of the arc isolation plate has a card block, and the card block cooperates with the clamping structure.

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