JP4329970B2 - Shield connector for direct attachment of equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a shield connector for direct attachment to equipment.
[0002]
[Prior art]
Shield connector for direct attachment of equipment is connection between battery and inverter of high voltage wiring for electric vehicle, connection between solar panel and inverter in solar system for outdoor installation , connection between fuel cell and inverter in fuel cell system for home installation, etc. Widely used in
This type of conventional connector, for example, forms a conductive layer on at least the outer surface from the shield connection portion to the flange portion of an insulating housing body having terminals and a flange portion for mounting to a device, and is engaged with the flange portion. A metal reinforcing plate having a stop piece is fitted and attached, and the flange portion is assembled to the device side to perform shield connection between the flange portion and the device side.
[0003]
[Problems to be solved by the invention]
In the conventional connector described above, this is firmly assembled on the equipment side, and in order to increase the reliability of the shield connection between the flange part and the equipment side, the flange part that is easily deformed is covered with a metal reinforcing plate and reinforced. A ground current is also passed through the plate to increase the ground path.
[0004]
However, since the metal reinforcing plate is attached to the flange portion by fitting into the connector, if there is rattling between the flange portion and the metal reinforcing plate or the flange portion is deformed, the device side The metal reinforcing plate is easily displaced or removed from the flange during transportation for assembly to the equipment or assembly on the equipment side, which makes the connector assembly workability worse. There was a problem.
Further, since the contact state between the metal reinforcing plate and the flange portion is deteriorated, it becomes difficult for the earth current to flow through the plate, and the earth path is not increased, so that there is a problem that reliability of shield connection is deteriorated.
Furthermore, the connector may be mounted on a transportation device such as an automobile and may be uncomfortable due to vibrations during transportation.
[0005]
The present invention provides a shielded connector for direct attachment of equipment that solves the above-mentioned problems, improves the assembly workability of the connector and the reliability of the shield connection, and prevents the rattling noise from being generated during transportation. It is.
[0006]
[Means for Solving the Problems]
In order to solve the above-described problems, a shield connector for direct attachment to a device according to the present invention is an outer surface of an insulating housing body having terminals and a flange portion for attachment to the device, at least from the shield connection portion to the flange portion. In a connector that forms a conductive layer on the flange, attaches a metal reinforcing plate having a locking piece to the flange, and attaches the flange to the equipment side to make a shield connection between the flange and the equipment. An elastic metal contact, whose base is attached to the outer side of the flange, is interposed between the wall and the inner side wall of the locking piece of the metal reinforcing plate, and the protruding end of the elastic metal contact is caused by its elastic deformation. The metal reinforcing plate is configured to be pressed against the inner side wall of the locking piece and exert a pressing force to lock the reinforcing plate to the flange portion.
[0007]
In this way, the metal reinforcing plate is attached to the flange portion while receiving the elastic force from the elastic metal contactor, so there is rattling between the flange portion and the metal reinforcing plate, or the flange portion is Even if it is deformed, the metal reinforcing plate may be displaced from the flange part or detached from the flange part during transportation for assembly to the equipment side or assembly to the equipment side. The connector assembly workability is improved.
In addition, since the contact state between the metal reinforcing plate and the flange portion can be maintained satisfactorily, the ground current smoothly flows through the plate, the ground path is increased, and the reliability of the shield connection can be improved.
In addition, the connector is mounted on a transportation device such as an automobile, so that no unpleasant noise is generated due to vibration during transportation.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings. FIGS. 1-8 shows one Embodiment of the shield connector for apparatus direct attachment which concerns on this invention. The shield connector for direct attachment to equipment includes an insulating housing body 10. The housing body 10 has a pair of cylindrical connector cases 12 juxtaposed in the lateral direction at the upper part, a rectangular flange part 14 projecting in the lateral direction for attachment to a device at the center, and the above-mentioned at the lower part. It has a pair of substantially square bases 16 projecting downward corresponding to the connector case 12, and is formed by molding an insulating material such as epoxy resin, nylon resin, PBT resin, ABS resin or the like. (See FIG. 2).
[0009]
As shown in FIG. 2, the circular hole of the connector case 12 has an inner protrusion 18a and a slit 18b formed in the length direction at a predetermined interval in the circumferential direction. A shield pipe 18 to be inserted into a circular groove 17 formed at the bottom of the hole is fitted, and the inner protrusion 18a forms a shield contact. The shield pipe 18 is formed of a stainless spring steel plate, a phosphor bronze plate, or the like so that it can be connected to a shield connection portion of a wire side connector (not shown).
Then, at the center of the shield pipe 18, a plate terminal 20 made of copper, aluminum, or an alloy material thereof is projected, and this terminal 20 is embedded in the housing body 10. For example, copper, copper alloy It is connected to one end of a conductive bus bar 22 made of a member. The other end of the bus bar 22 is connected to a press-fit nut 24 made of a stainless steel bar, a plated steel bar or the like embedded in the base 16, and although not shown, a wire terminal is connected via a bolt screwed to the press-fit nut 24. And so on.
As shown in FIGS. 2 and 5 (B), the outer surface from the shield connection portion of the housing main body 10 to the electric wire side connector to the flange portion 14 and the inner wall surface of the circular hole of the connector case 12 are electrically conductive for shielding. A conductive layer 26 made of a paint layer, a conductive plating layer, or the like is formed.
[0010]
1 and 2, 28 is an elastic metal contact formed of a stainless spring steel plate, a phosphor bronze plate or the like. As shown in detail in FIG. Are provided with locking projections 28a for locking in the length direction (width direction).
On the other hand, on the back side of the housing body 10, that is, on the outer side of the flange portion 14 located on the side opposite to the opening side of the shield pipe 18, as shown in detail in FIGS. A recess 14a corresponding to the length of the elastic metal contact 28 is formed along the width direction. And the concave receiving step part 14b which supports the base part of the elastic metal contact 28 on the upper and lower surfaces of the flange part 14 located in the back | inner side of this recessed part 14a, and the length direction of this step part on the both concave receiving step part 14b A continuous locking groove 14c is provided.
Therefore, the elastic metal contact 28 is inserted into the concave receiving step portion 14b of the flange portion 14 so as to be sandwiched from both the upper and lower sides by pushing the base portion open, and the locking convex portion 28a of the contact member 28 is inserted into the flange portion. The flange 14 is mounted by being locked in the locking groove 14 c of the portion 14.
At this time, the elastic metal contact 28 is mounted on the flange portion 14 so that the protruding end 28b protrudes from the outer portion of the flange portion 14, that is, slightly outward from the outer wall of the portion where the elastic metal contact 28 is not mounted. (See FIG. 6 (b)). Then, when the metal reinforcing plate 30 is attached to the flange portion 14 later, the locking piece 30b pushes against the protruding end 28b of the elastic metal contact 28 with an appropriate pressing force, and the contact 28 is elastically deformed. It is preferable because an appropriate elastic force (reaction force) can be effectively applied from the elastic metal contactor 28 to the metal reinforcing plate 28 side.
[0011]
Reference numeral 30 shown in FIGS. 1 and 2 is a metal reinforcing plate having a locking piece 30a attached to the flange portion 14 for the purpose of reinforcing the flange portion 14 and increasing its mechanical strength. 1 and 4 is a waterproof packing (O-ring) made of silicon rubber, EPDM or the like provided on the lower surface (bottom surface) of the flange portion 14 in order to waterproof the housing body 10 and the device side. is there.
As shown in detail in FIGS. 7A and 7B, the metal reinforcing plate 30 has a rectangular shape, and a rectangular hole 30b having a size through which the housing body 10 can be inserted is formed at the center. Moreover, it is preferable to use a plated steel plate, a stainless steel plate, or the like having a thickness of 2 to 3 mm so that the housing body 10 is not damaged by being tightened by bolts when attached to the device. The locking piece 30a is formed by bending the plate 30 or welding a locking strip at both ends (short side) of the plate 30 on the long axis side.
[0012]
In order to attach the metal reinforcing plate 30 to the flange portion 14, as shown in FIG. 8, the metal reinforcing plate 30 is attached to the housing main body 10 so that the head of the housing main body 10 is inserted into the rectangular hole 30b. The head is lowered downward from the housing body 10. Then, the one locking piece 30a is first locked to the outer portion of the flange portion 14 located on the opening side of the shield pipe 18.
Next, the locking piece inner side wall 30c of the other locking piece 30b is pressed against the protruding end 28b of the elastic metal contact 28, and the contact 28 is pressed so as to be elastically deformed.
Then, an elastic force (repulsive force) works from the elastic metal contact 28 interposed between the outer wall 14 d of the flange portion 14 and the locking piece inner side wall 30 c of the metal reinforcing plate 30. By this elastic force, the protruding end 28b of the contact 28 is pressed against the locking piece inner side wall 30c of the metal reinforcing plate 30, and a constant pressing force is always applied.
In this way, the reinforcing plate 30 is locked to the flange portion 14 by using the elastic force of the elastic metal contact 28, so that the metal reinforcing plate 30 is firmly attached to the flange portion 14, and the displacement and the flange portion are fixed. It is possible to prevent dropout from 14. In addition, since the contact state between the metal reinforcing plate and the flange portion is maintained well, it is possible to increase the ground path by smoothly flowing the ground current through the plate.
[0013]
In the embodiment, the elastic metal contact 28 is attached to the flange portion 14 on the back side of the housing body 10. However, the elastic metal contact 28 is attached to the flange portion 14 on the front side of the housing body 10, or on the back side and front side of the flange portion 14. You may make it mount on both. In addition, as the elastic metal contact, for example, an elastic metal contact 32 having a hook-shaped portion 32a formed by curving the tip as shown in FIG. 9 instead of the elastic metal contact 28 is used. The base portion may be attached to the concave stepped portion 14b of the flange portion 14 by means such as the concave-convex locking or welding.
[0014]
【The invention's effect】
As described above, the shield connector for direct attachment of the device according to the present invention is an elastic member in which the base is attached to the outer portion of the flange portion between the outer wall of the flange portion and the inner wall of the locking piece of the metal reinforcing plate. A metal contact is interposed, and the elastic metal contact is pressed against the inner wall of the locking piece of the metal reinforcing plate by the elastic force generated by its elastic deformation, and the pressing force is applied to the flange portion. Since the metal reinforcing plate is attached to the flange portion so as to be stopped, the assembling workability of the connector and the reliability of the shield connection can be improved. In addition, it is possible to prevent rattling noise from being generated during transportation.
[Brief description of the drawings]
FIG. 1 is a front view showing an embodiment of a shield connector for direct attachment to an apparatus according to the present invention.
2 is a cross-sectional view taken along line X-X in FIG. 1;
FIG. 3 is a plan view of the connector shown in FIG. 1;
4 is a bottom view of the connector shown in FIG. 1. FIG.
FIGS. 5A and 5B show a state in which an elastic metal contact is attached to the flange portion of FIG. 1, wherein FIG. 5A is a plan view and FIG. 5B is a cross-sectional view taken along line YY of FIG.
6 is an enlarged view of a part of the state in which the elastic metal contact is mounted on the flange portion from FIG. 5, in which (a) is a front sectional view and (b) is a partially omitted plan view.
7A and 7B show a metal reinforcing plate which is a component of the connector of FIG. 1, wherein FIG. 7A is a front view and FIG. 7B is a plan view.
8 is a cross-sectional view showing a state in which the metal reinforcing plate of FIG. 1 is attached to a flange portion.
FIG. 9 is a cross-sectional view showing a modification of the elastic metal contactor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Housing main body 12 Connector case 14 Flange part 14a Recessed part 14b Recessed step part 14c Locking ditch | groove 14d Outer side wall 16 Base
17 circular groove 18 shield pipe 18a inner projection 18b slit 20 terminal 22 bus bar 24 press-fit nut 26 conductive layer 28 elastic metal contact 28a locking projection 30 metal reinforcing plate 30a locking piece 30b rectangular hole 30c locking piece inner wall 31 waterproof packing 32 elastic metal contact 32a bowl

Claims (1)

A metal reinforcing plate having a conductive layer formed on at least the outer surface from the shield connection portion to the flange portion of the insulating housing body having a terminal and a flange portion for mounting to a device, and having a locking piece on the flange portion. In the shield connector for direct attachment of equipment that attaches and attaches the flange part to the equipment side and makes a shield connection between the flange part and the equipment side, between the outer wall of the flange part and the inner wall of the locking piece of the metal reinforcing plate In addition, an elastic metal contact that is attached to the outer side of the flange portion is interposed between the protrusion and the protruding end of the elastic metal contact against the inner wall of the locking piece of the metal reinforcing plate by the elastic force generated by its elastic deformation. A shield connector for direct attachment to a device, wherein the reinforcing plate is pressed and the reinforcing plate is locked to the flange portion.

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