JPH07263098A - Short circuit connector for withstand voltage test - Google Patents

Abstract

PURPOSE:To increase the freedom degree of a connector in accordance with the number of a terminal and also eliminate an unused terminal to adapt the connector to small lot multi-production by providing the plug receiver of a one-point unit as the minimum number of terminals and the plug of the one-point unit and juxtaposedly engaging these respective units by using linking bodies in accordance with the necessary number of terminals. CONSTITUTION:A plug receiving body is composed of a plug receiving insulating base 1 and a contact socket 2. The insulating base 1 is injection-molded by using thermoplastic resin, e.g. polyphenylene sulphide, to be adopted as the plug receiver of one unit, and the plug receiver is composed of protrusive and recessed parts 1a and 1b to fit adjacent members to each other. That is, one-point units composed of the insulating base 1 are juxtaposedly engaged to constitute a linking body, and it is fastenedly fixed to the inner side of a sheet-metal-made support 3 having a U-shape cross section by using a screw 4 to join an electric wire 5 to a socket 2. For instance, when the number of terminals is four as shown, the linking body is supported by the screws 4 at two places, and one more set of plug receivers 1' is provided on the outer side of the support 3. Similarly, the plug receivers 1' are composed of insulating base 1 and sockets 2, and others are formed as conventional.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a withstand voltage test short-circuit connector used for withstand voltage test of an electric vehicle controller.

[0002]

2. Description of the Related Art When a control device (power converter) composed of a power element GTO shown in FIG. 9 is subjected to a withstand voltage test, the terminals and terminals of the power element GTO (double circle mark are marked so as not to be destroyed by a test voltage. ) Preliminary work is required to short circuit so that the potentials are the same. The connector used for this is called a short-circuit connector for pressure resistance test. IM is a 3-phase induction motor,
Represents a GS ground switch. Before adopting this connector method, temporary wires were laid out manually by using a thin core wire each time a withstand voltage test was performed. In the case of this manual work, there is a risk of accidental destruction of the device due to incorrect connection at the short-circuit position or leakage of the temporary wiring after the test is completed. In order to eliminate such a risk, a method of permanently installing a short-circuit connector for pressure resistance test inside the device has been standardly adopted. 5 to 8 show conventional short-circuit connectors for pressure resistance test. FIG. 5 is a cross-sectional plan view of the plug receiver 100 of the short-circuit connector for pressure resistance test as seen from BB of FIG.
01 is an insulator, 102 is a stopper bracket, 103 is a stopper bracket 1
Reference numeral 102 denotes an electric wire connected to 02, 104 is a mounting hole for the plug receiver 100 , and 105 is a bolt and nut for fixing the spring 106. FIG. 6 shows an insulator 101 when the plug receiver 100 of the short-circuit connector for pressure resistance test is viewed from the side. The same reference numerals as those in FIG. 5 denote the same things, and 106 denotes a spring for pressing the stopper body 200 . As the insulator 101, a laminated plate of a thick plate L (for example, a thermosetting epoxy resin laminated plate having a thickness of 25 mm) is used, and is cut to form the shape of FIG. 5 by a plurality of processes such as a milling plate process and a drilling process. Produced by. FIG. 7 shows a state in which the stopper receiver 100 and the stopper body 200 are combined. When performing the pressure resistance test, the plug receiver 100 and the plug body 200 are coupled, and the plug body 200 at that time is at the pressure resistance test position (pressure resistance test position) 107. On the other hand, when the power conversion device enters the operating state. , Plug
In order to store 200 in the plug receiver 100 , the plug 200 is moved to the non-pressure resistance test position (non-pressure resistance test position) 107a, and inserted and stored in this position. Reference numerals 200-1 and 200-2 indicate a main body and a handle of the plug body 200 , respectively. Spring 106
Presses the plug body 200 with pressure in order to stably maintain the inserted state of the plug receiver 100 and the plug body 200 . FIG. 8 shows a symbol diagram of a short-circuit connector for a withstand voltage test. Stopper 10
The destination of the electric wire 103 of 0 is wired and connected to each terminal of the GTO element to be short-circuited in the power converter shown in FIG. Further, the short-circuit wire 108 of the plug body 200 is wired so as to short-circuit the GTO element. . This withstand voltage test short-circuit connector has the advantage that terminals can be short-circuited with a single touch, and reliable and accurate preparation work can be performed. However, since the conventional short-circuit connector for withstanding voltage test has a large number of terminals, it is a high-mix low-volume production, and because it uses a thermosetting epoxy resin, each time according to the required number of terminals, We adopted a structure in which the insulating laminated board was shaved by multiple production steps to make an insulator, and the connector pins and connector sockets were inserted into this insulator to make it by hand. As a result, it is possible to avoid increasing the production cost. There wasn't. 5 to 8 show the case where the number of short-circuit terminals is 4, but there are demands for the number of terminals other than this, such as 6, 10, 11 points, and the number of these short-circuit terminals is 4, 6, 10
The short-circuit connector for withstanding voltage test, such as 11 points and 11 points, is manufactured as an integral structure. By the way, for example, 5 short-circuit terminals,
If a 7-point or 18-point short-circuit connector for pressure test is required,
Since the conventional short-circuit connector for pressure resistance test has an integrated structure,
When the number of short-circuit terminals is 5, the short-circuit test connector with 6 terminals is used, and when the number of short-circuit terminals is 7, two short-circuit connectors for voltage test with 4 terminals are used.
In the case of 18 short-circuit terminals, two short-circuit connectors for withstanding voltage test with 10 terminals were used. As described above, when the number of short-circuit terminals is other than 4, 6, 10, and 11, a short-circuit test connector with a large number of one-stage terminals is selected or a plurality of short-circuit test connector for withstand voltage tests is used. Were used side by side. Therefore, in the conventional short-circuit connector for pressure resistance test,
When the number of short-circuit terminals is other than 4, 6, 10, and 11, there is a problem in that empty short-circuit terminals occur and waste is increased. In addition to the conventional short-circuit connector for pressure resistance test described above, for example
The publication describes a short-circuit connector in which one short-circuit connector simultaneously makes a short-circuit connection between a plurality of pairs of plug pins and a common connection between a plurality of short-circuited predetermined pairs. However, since this short-circuit connector has an integral structure, it cannot flexibly respond to the number of plug pins, and it is inevitable that the cost will increase.

[0003]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to reduce the production cost, be suitable for high-mix low-volume production, and have a high degree of freedom for withstanding the number of terminals. It is to provide a short-circuit connector.

[0004]

The above object is to provide a one-point unit plug receiver having a minimum number of terminals and a one-point unit plug, and connect these units in parallel according to the required number of terminals. This is accomplished by forming the body and holding this connection to the support plate.

[0005]

[Operation] Since the unit has a minimum number of terminals,
Since this unit is installed in parallel according to the required number of terminals, the degree of freedom corresponding to the number of terminals is increased, and when connecting the plug receiver and the plug body, empty terminals can be eliminated. In addition, the production cost can be reduced, and it is possible to support high-mix low-volume production.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a short-circuit connector for pressure resistance test showing an embodiment of the present invention, and FIG. 2 is a sectional view taken along the line AA of FIG.
It is a side view of a short circuit connector for a withstand voltage test at the time of a withstand voltage test. Hereinafter, the same reference numerals denote the same items. 1 and 2
In FIG. 1 , the plug receiver 1 includes a plug receiver insulating base 1 and a contact socket 2. The plug receiver insulating base 1 is formed by forming a plug receiver of one unit, using a thermoplastic resin such as polyphenylene sulfide (PPS), and injecting this resin into a resin molding die. The convex portion 1 on the plug receiving insulating base 1
a, 1a and recesses 1b, 1b are provided so that adjacent members fit together. That is, a one-point unit composed of the plug receiving insulating base 1 is engaged side by side to form a connected body, and this connected body is fastened and fixed to the inside of the sheet metal support 3 having a U-shaped cross section with a screw 4.
In FIG. 1, units having four terminals are arranged and engaged in parallel to form a connected body. The electric wire 5 is connected to the contact socket 2. When the number of terminals is four as shown in FIG. 1, the screws 4 at two positions can sufficiently support the terminals. On the outside of the U-shaped sheet metal support 3, another set of plug receivers 1 ′ is provided. This plug receptacle 1 ',
Plug receptacle 1 stopper like the receiving insulation base 1, made from the contact socket 2, other structures are the same as plug receptacle 1. The portion of the plug receiver 1 ′ is a storage portion for the plug 6 during the non-pressure resistance test. Here, housing part of the plug receptacle 1 ', since the housing holding the plug 6, the plug receptacle 1 from the viewpoint of holding strength' coupling number Yunitsuto of, when the plug receiving body 1 is less than 6 terminals, A unit with less than 6 points is sufficient, and the plug receiver 1 has 10 terminals or 11 terminals.
When it is a terminal, a unit of 6 points is sufficient. The plug body 6 includes a plug insulating base 6 and a pin 7. The plug insulating base 6 forms a plug of one unit, and is made by using a thermoplastic resin such as polyphenylene sulfide (PPS) like the plug receiving insulating base 1 and injecting this resin into a resin molding die. . The plug insulating base 6 has convex portions 6a, 6a and concave portions 6
b and 6b are provided so that neighbors fit together. That is, a one-point unit composed of the plug insulation base 6 is engaged in parallel to form a connected body, and this connected body is screwed inside the L-shaped sheet metal support 8.
Tighten and stick with. In FIG. 1, units having four terminals are arranged and engaged in parallel to form a connected body. When the number of terminals is four as shown in FIG. 1, it can be supported by two screws 9. On the back surface 8a of the L-shaped sheet metal support 8, the insertion / removal operation handle 1
0 is tightened with a screw 11 and a nut 12 and fixed. The pull-out operation handle 10 is formed with a stretched flexible portion 10a.

FIG. 3 is a side view of the short-circuit connector for pressure resistance test when the plug body 6 is housed in the plug receiver 1 '(non-voltage test). When shifting from the pressure resistance test state shown in FIG. 2 to the non-pressure resistance test of FIG. 3, the handle 10 is grasped and the stopper 6 is moved to the stopper receiver 1.
Then, the pulled-out plug body 6 is inserted into the plug receiver 1 ′ on the outer side of the U-shaped metal plate support 3, and the plug body 6 is housed as shown in FIG. At this time, the bending portion 10a of the handle 10 is caught in the hole portion 3a of the sheet metal support 3 having a U-shaped cross section shown in FIG. 3 so that the spring force of the bending is applied so that the plug body 6 does not come out from the storage portion. Use and hold.

FIG. 4 shows an enlarged side view of the short-circuit connector for a withstanding voltage test during the withstanding voltage test, as seen from the section AA of FIG. In FIG. 4, the wiring 7a is a short-circuit wiring and corresponds to the wiring 108 shown in FIG.

[0009]

As described above, according to the present invention, the unit having the minimum number of terminals forms the stopper and the stopper, and the units are simply connected according to the required number of terminals. Since the plug receiver and the plug body are configured, the degree of freedom that corresponds to the number of terminals is increased, and when the plug receiver and the plug body are joined, it is possible to eliminate the conventional empty terminal. The production cost can be reduced, and it is possible to handle high-mix low-volume production. In addition, the plug receiver and the insulating base forming the plug are
Since a thermoplastic resin is used and this resin is injected into a resin molding die, it can be simplified as compared with the conventional production process, and the production cost can be reduced. In addition, since the one-point unit connecting body is firmly attached to the sheet metal supporting body having a relatively high degree of freedom in production, the production cost can be reduced.

[Brief description of drawings]

FIG. 1 is a front view of a short-circuit connector for pressure resistance test showing an embodiment of the present invention.

FIG. 2 is a side view of a short-circuit connector for a withstanding voltage test at the time of a withstanding voltage test seen from the cross section AA of FIG.

FIG. 3 is a side view of a short-circuit connector for withstanding voltage test during non-withstanding voltage test.

FIG. 4 is an enlarged side view of a short-circuit connector for a withstand voltage test during a withstand voltage test taken along the line AA in FIG.

FIG. 5 is a cross-sectional plan view of a plug receiver of a conventional short-circuit connector for pressure resistance test.

FIG. 6 is an insulator of a conventional plug receiver of a short-circuit connector for pressure resistance test viewed from a side surface.

FIG. 7 is a state diagram showing a combination of a plug receiver and a plug of a conventional short-circuit connector for pressure resistance test.

[Fig. 8] Symbol diagram of short-circuit connector for pressure resistance test

FIG. 9 is a power conversion device to which the present invention is applied.

[Explanation of reference numerals] 1 plug receiver 1 plug receiving insulating base 2 contact socket 3 U-shaped section support 6 plug 6 plug insulating base 7 pins 8 L-shape support 10 handle

Claims (5)

[Claims] 1. A short-circuit connector for pressure resistance test comprising a stopper body and a stopper receiver at the time of a pressure resistance test, wherein each unit of the stopper and the stopper receiver of a one-point unit having the minimum number of terminals is engaged side by side.
A short-circuit connector for a pressure resistance test, characterized in that each connected body is fixed to each support plate. 2. A short-circuit connector for pressure resistance test, which comprises a stopper and a cap receiver at the time of a pressure resistance test, in which each unit of the cap and cap receiver of one point unit having the minimum number of terminals is engaged in parallel by the required number of terminals. The body and another set of plug receivers are provided separately, and each of these connectors is firmly attached to each support plate, and the plug connector is connected to the plug receiver connector during the pressure resistance test, and the non-pressure resistance test is performed. Separately, it is housed in another set of plug receivers, which is a short-circuit connector for pressure resistance test. 3. A short-circuit connector for pressure-proof test, which has a short-circuiting plug inserted into both the plug-receiver at the time of pressure-proof test and the plug-receiver at the time of storage, in a one-point unit with a minimum number of terminals. Each unit is fixed to the two sides of the U-shaped cross-section support body with the required number of terminals side-by-side engaged, and the minimum number of terminals is 1
A short-circuit connector for a pressure resistance test, characterized in that a connecting body, in which a required number of units of stoppers of point units are arranged and engaged in parallel, is fixed to one surface of a support body having an L-shaped cross section. 4. The short-circuit plug body according to claim 3, wherein a pull-out operation handle is attached to the back surface of the short side of the L-shaped cross-section supporting body for holding the short-circuit plug body, and a bending portion extended from the handle is formed. A short-circuit connector for pressure resistance test, wherein the flexible portion engages with one surface of the U-shaped support of the plug receiver at the storage position when inserted into the plug receiver at the position. 5. The short circuit for pressure resistance test according to claim 1, wherein the one-point unit having the minimum number of terminals of the stopper and the stopper receiver is injection molded using a thermoplastic resin. connector.