Primary plug-in of drawer type switch cabinet

Abstract

The utility model relates to a primary plug-in of a drawer type switch cabinet, which comprises a shell and a wiring terminal group arranged on the shell, the shell is provided with at least one group of rear mounting cavity and front mounting cavity, the wiring terminal group comprises a connector bar and a connecting plug, the front part of the connector bar is arranged in the rear mounting cavity of the shell, and the front part of the connector bar is arranged in the front mounting cavity of the shell. The rear part of the connecting plug is arranged in a front mounting cavity of the shell, the front part of the line bank and the rear part of the connecting plug are connected with the connecting bar between the front part of the line bank and the rear part of the connecting plug and are in conductive arrangement, the connecting bar is U-shaped and is arranged in a rear mounting cavity of the shell, two ends of the U-shaped connecting bar are provided with elastic inserting sheets, and the elastic inserting sheets are arranged in the rear mounting cavity of the shell. The two inserting pieces are elastically clamped in the bayonets on the two opposite sides of the rear installation cavity respectively to achieve abutting positioning. The two ends of the connecting bar can abut against the two opposite sides of the rear mounting cavity, and therefore shaking of the connecting bar is reduced.

Description

Technical Field

[0001] The utility model relates to the field of drawer-type switch cabinets, in particular to a primary plug-in unit of a drawer-type switch cabinet. Background Art

[0002] The functional unit of the drawer-type switchgear is separated from the busbar or cable by a grounded metal plate or a functional board made of plastic, forming three areas: busbar, functional unit and cable. There are also isolation measures between each functional unit. The drawer-type switchgear has high reliability, safety and interchangeability. It is a relatively advanced switchgear. Most of the switchgear produced are drawer-type switchgear. They are suitable for industrial and mining enterprises and high-rise buildings that require high power supply reliability as a centralized control distribution center.

[0003] The current primary plug-in includes a shell and a wiring terminal arranged in the shell. The shell is provided with a group of spaced rear installation cavities and front installation cavities, and an intermediate connecting row is provided between the rear installation cavity and the front installation cavity. The wiring terminal includes an "L"-shaped wiring row and an "L"-shaped plug connector. Two "L"-shaped wiring rows are stacked and arranged in the rear installation cavity of the shell and are electrically connected to the intermediate connecting row. Two "L"-shaped plug connectors are stacked and arranged in the front installation cavity of the shell and are electrically connected to the intermediate connecting row. A "U"-shaped plug interface is provided at the front end of the "L"-shaped plug connector, and a "U"-shaped retaining spring is provided on the "U"-shaped plug interface. The rear installation cavity of the shell is provided with a "U"-shaped clamping groove, and the intermediate connecting row is "U"-shaped and clamped in the "U"-shaped clamping groove. Since the connecting row and the shell are separately arranged, the connecting row cannot be fully adapted to the "U"-shaped card slot for fixation after installation, and the "U"-shaped card slot is relatively large, which will cause the connecting row to shake easily, and the "L"-shaped terminal block and "L"-shaped plug connector connected to the connecting row will also shake. Summary of the invention

[0004] Purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a primary plug-in unit of a drawer-type switch cabinet, wherein the two end heads of the connecting row can abut against the opposite sides of the rear installation cavity, thereby reducing the shaking of the connecting row.

[0005] The technical solution of the utility model is as follows: a primary plug-in of a drawer-type switch cabinet, comprising a shell, a terminal group arranged on the shell, the shell being provided with at least one group of rear installation cavity and front installation cavity, the terminal group comprising a terminal block and a plug connector, the front of the terminal block being arranged in the rear installation cavity of the shell, the rear of the plug connector being arranged in the front installation cavity of the shell, the front of the terminal block and the rear of the plug connector being connected to a connecting block therebetween and also being conductively arranged, the connecting block being "U"-shaped and being installed in the rear installation cavity of the shell, the two end heads of the "U"-shaped connecting block being provided with elastic plug-ins, the two plug-ins being elastically clamped in the bayonet openings on opposite sides of the rear installation cavity respectively to realize interference positioning.

[0006] By adopting the above technical solution: elastic inserts are provided at both ends of the "U"-shaped connecting row, and the two inserts are elastically clamped in the opposite side slots of the rear installation cavity to achieve interference positioning, which can reduce the shaking of the connecting row.

[0007] Preferably, the two inserts are in a pair of "V"-shaped structures with openings facing each other. The "V"-shaped insert is convenient for inserting and exiting the insert into the slot.

[0008] Preferably, there are slots for the two ends of the "U"-shaped connecting row to enter respectively on opposite sides of the rear installation cavity, and the slots are arranged on the side walls of the slots. The opposite wall surfaces of the two slots are sloped surfaces that contact the two ends of the connecting row, and in the direction of the connecting row being installed in the rear installation cavity, the sloped surfaces on both sides are inclined toward directions approaching each other. When the connecting row is installed in the rear installation cavity, since the sloped surfaces on both sides are inclined toward directions approaching each other, the connecting row can be installed more and more tightly, and the installation is stable and not easy to loosen.

[0009] Preferably, the front of the plug connector has a plug interface consisting of two pins, and a spring clip is sleeved on the plug connector. The spring clip has a U-shaped upper piece and a lower piece, and the two front ends of the U-shaped upper piece and the lower piece are connected to form an integral structure through a connecting piece. When the spring clip is assembled with the plug connector, the upper piece and the lower piece are sleeved on the plug connector, and the two connecting pieces are respectively squeezed into the gaps outside the two pins. The spring clip can clamp the two pins at the front of the plug connector relative to each other.

[0010] Preferably, the two opposite ends of the U-shaped upper piece are inclined toward each other, so as to achieve a good clamping effect on the two pins.

[0011] Preferably, the plug connector further has a long slot extending from the plug interface to the rear. The long slot can facilitate the deformation of the two pins after being subjected to force.

[0012] Preferably, the rear parts of the U-shaped upper and lower pieces can be driven close together by screws to clamp on the plug connector, and the long slots are accessible for the screws to enter. Tightening the screws can bring the rear parts of the U-shaped upper and lower pieces close together, thereby achieving the effect of clamping on the upper and lower sides of the plug connector, and the operation is convenient.

[0013] Preferably, the two wiring blocks are stacked and arranged in the rear installation cavity of the housing, the two plug connectors are arranged in the front installation cavity of the housing, and the front parts of the two plug connectors are arranged in an upper and lower interval, and the rear parts of the two wiring blocks, the connection block, and the front parts of the two plug connectors are connected and fixed by bolts. The bolt connection is very convenient for fixing and installation, and the structure is simpler and more stable.

[0014] Preferably, a plurality of groups of rear installation cavities and front installation cavities are arranged on the shell, and adjacent front installation cavities are separated by arc isolation plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a primary plug-in of the utility model;

[0016] Figure 2 It is a cross-sectional view of a primary plug-in of the utility model;

[0017] Figure 3 This is one of the schematic diagrams of the shell structure in the primary plug-in of the utility model;

[0018] Figure 4 This is the second schematic diagram of the shell structure in the primary plug-in of the utility model;

[0019] Figure 5 This is a schematic diagram of the structure of a rear installation cavity in a primary plug-in of the utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the connecting row in the primary plug-in of the utility model;

[0021] Figure 7 This is a schematic diagram of the structure of the plug connector in the primary plug-in of the utility model;

[0022] Figure 8 It is a schematic diagram of the structure of the retaining spring component in the primary plug-in of the utility model.

[0023] In the figure: housing 1, rear mounting cavity 11, front mounting cavity 12, terminal block 21, plug connector 22, connection block 3, plug piece 31, bayonet 11a, slot 11b, slope surface 11b1, plug pin 221, plug port 222, spring retaining member 4, upper piece 41, lower piece 42, connecting piece 43, notch 223, long slot 224, screw 5, bolt 6, arc isolation plate 13. DETAILED DESCRIPTION

[0024] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-8 As shown, a primary plug-in of a drawer-type switch cabinet of the utility model comprises a shell 1, a terminal group arranged on the shell 1, the shell 1 is provided with at least one group of rear mounting cavity 11 and front mounting cavity 12, the terminal group comprises a terminal block 21 and a plug connector 22, the front of the terminal block 21 is arranged in the rear mounting cavity 11 of the shell 1, the rear of the plug connector 22 is arranged in the front mounting cavity 12 of the shell 1, the front of the terminal block 21 and the rear of the plug connector 22 are connected to a connecting row 3 therebetween and are also conductively arranged, the connecting row 3 is "U"-shaped and is installed in the rear mounting cavity 11 of the shell 1, and elastic plugs 31 are provided on both ends of the "U"-shaped connecting row 3, and the two plugs 31 are elastically clamped in the opposite side bayonet 11a of the rear mounting cavity 11 to achieve interference positioning.

[0026] Specifically, the two insert pieces 31 are in a pair of "V"-shaped structures with openings facing each other.

[0027] Specifically, there are card slots 11b for the two ends of the "U"-shaped connecting row 3 to enter respectively on the opposite sides of the rear installation cavity 11, and the card slots 11a are arranged on the side walls of the card slots 11b. The opposite wall surfaces of the two card slots 11b are slope surfaces 11b1 that abut against the two ends of the connecting row 3, and in the direction of the connecting row 3 being inserted into the rear installation cavity 11, the slope surfaces 11b1 on both sides are inclined towards directions close to each other.

[0028] Specifically, the front part of the plug connector 22 has a plug interface 222 composed of two pins 221, and a spring clip 4 is also sleeved on the plug connector 22. The spring clip 4 has a U-shaped upper piece 41 and a lower piece 42. The two front ends of the U-shaped upper piece 41 and the lower piece 42 are connected into an integral structure through a connecting piece 43. When the spring clip 4 is assembled with the plug connector 22, the upper piece 41 and the lower piece 42 are cooperated and sleeved on the plug connector 22, and the two connecting pieces 43 are also squeezed into the notches 223 on the outside of the two pins 221 respectively.

[0029] Specifically, two opposite ends of the U-shaped upper piece 41 are inclined toward each other, and two opposite ends of the U-shaped lower piece 42 are also inclined toward each other.

[0030] Specifically, the plug connector 22 also has a long slot 224 , and the long slot 224 extends from the plug interface 222 to the rear.

[0031] Specifically, the rear portions of the U-shaped upper piece 41 and the lower piece 42 can be driven close together by the screws 5 to be clamped on the plug connector 22 , and the long slots 224 can be entered by the screws 5 .

[0032] Specifically, the two terminal blocks 21 are stacked and arranged in the rear installation cavity 11 of the shell 1, and the two plug connectors 22 are arranged in the front installation cavity 12 of the shell 1, and the front parts of the two plug connectors 22 are arranged with upper and lower intervals, and the rear parts of the two terminal blocks 21, the connection row 3, and the front parts of the two plug connectors 22 are connected and fixed by bolts 6.

[0033] Specifically, a plurality of groups of rear installation cavities 11 and front installation cavities 12 are arranged on the housing 1 , and adjacent front installation cavities 12 are separated by arc isolation plates 13 .

[0034] In the structure of the utility model: elastic inserts 31 are provided at both end heads of the "U"-shaped connecting row 3, and the two inserts 31 are elastically clamped in the opposite side slots 11a of the rear installation cavity 11 to achieve interference positioning, which can reduce the shaking of the connecting row 3; and when the connecting row 3 is inserted into the rear installation cavity 11, since the slope surfaces 11b1 on both sides are inclined toward directions close to each other, the connecting row 3 can be installed tighter and tighter, and the installation is stable and not easy to loosen.

[0035] By inserting the clamping spring 4 onto the plug connector 22, the two front end connecting pieces 43 of the clamping spring 4 are squeezed into the notches 223 outside the two pins 221, so that the two pins 221 at the front of the plug connector 22 can be clamped relative to each other; and by tightening the screws 5, the rear parts of the U-shaped upper piece 41 and the lower piece 42 can be brought close to each other, thereby achieving the effect of clamping the upper and lower sides of the plug connector 22, and the operation is convenient.

[0036] It should be noted that in the description of the present invention, all directional indications (such as up, down, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0037] In addition, in the description of the present invention, “several” or “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0038] In the description of the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "couple", "connect", and "fix" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A primary plug-in unit of a drawer-type switch cabinet, comprising a housing (1), a terminal block group arranged on the housing (1), the housing (1) being provided with at least one group of rear mounting chambers (11) and front mounting chambers (12), the terminal block group comprising a wiring block (21) and a plug connector (22), the front portion of the wiring block (21) being arranged in the rear mounting chamber (11) of the housing (1), the rear portion of the plug connector (22) being arranged in the front mounting chamber (12) of the housing (1), the front portion of the wiring block (21) and the rear portion of the plug connector (22) being connected to a connecting block (3) therebetween and also being arranged to be conductive, the connecting block (3) being in a "U" shape and being inserted into the rear mounting chamber (11) of the housing (1), characterized in that: The two ends of the "U"-shaped connection row (3) are provided with elastic inserts (31), and the two inserts (31) are elastically clamped in the opposite side clamping openings (11a) of the rear installation cavity (11) to achieve interference positioning.

2. The primary plug-in of a drawer-type switch cabinet according to claim 1, characterized in that: The two inserting pieces (31) are in a pair of "V"-shaped structures with openings facing each other.

3. The primary plug-in unit of a drawer-type switch cabinet according to claim 1, characterized in that: On opposite sides of the rear installation cavity (11), there are slots (11b) for the two ends of the "U"-shaped connecting row (3) to enter respectively, the slots (11a) are arranged on the side walls of the slots (11b), the opposite wall surfaces of the two slots (11b) are inclined surfaces (11b1) that abut against the two ends of the connecting row (3), and in the direction in which the connecting row (3) is installed into the rear installation cavity (11), the two side inclined surfaces (11b1) are inclined towards directions approaching each other.

4. A primary plug-in unit for a drawer-type switch cabinet according to claim 1, 2 or 3, characterized in that: The plug connector (22) has a plug interface (222) formed by two plug pins (221) at the front part, and a spring clip (4) is also sleeved on the plug connector (22), wherein the spring clip (4) has a U-shaped upper piece (41) and a lower piece (42), and the two front ends of the U-shaped upper piece (41) and the lower piece (42) are connected to form an integral structure via a connecting piece (43). When the spring clip (4) and the plug connector (22) are assembled, the upper piece (41) and the lower piece (42) are sleeved on the plug connector (22) in cooperation, and the two connecting pieces (43) are respectively squeezed into the notches (223) on the outsides of the two plug pins (221).

5. The primary plug-in unit of a drawer-type switch cabinet according to claim 4, characterized in that: The two opposite ends of the U-shaped upper piece (41) are inclined toward each other.

6. The primary plug-in unit of a drawer-type switch cabinet according to claim 4, characterized in that: The plug connector (22) also has a long slot (224), and the long slot (224) extends from the plug interface (222) to the rear.

7. The primary plug-in unit of a drawer-type switch cabinet according to claim 6, characterized in that: The rear parts of the U-shaped upper plate (41) and the lower plate (42) can be driven close together by screws (5) to be clamped on the plug connector (22), and the long groove (224) can be entered by the screws (5).

8. A primary plug-in unit for a drawer-type switch cabinet according to claim 1, 2 or 3, characterized in that: The two wiring blocks (21) are stacked and arranged in the rear installation cavity (11) of the housing (1), and the two plug connectors (22) are arranged in the front installation cavity (12) of the housing (1), and the front parts of the two plug connectors (22) are arranged with an upper and lower interval, and the rear parts of the two wiring blocks (21), the connection block (3), and the front parts of the two plug connectors (22) are connected and fixed by bolts (6).

9. A primary plug-in unit for a drawer-type switch cabinet according to claim 1, 2 or 3, characterized in that: A plurality of groups of rear installation cavities (11) and front installation cavities (12) are arranged on the housing (1), and adjacent front installation cavities (12) are separated by arc isolation plates (13).

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