WO2015060112A1

WO2015060112A1 - Shielded connector

Info

Publication number: WO2015060112A1
Application number: PCT/JP2014/076673
Authority: WO
Inventors: 知一柏田; 清貴居附
Original assignee: 住友電装株式会社
Priority date: 2013-10-24
Filing date: 2014-10-06
Publication date: 2015-04-30
Also published as: JP2015082464A; JP5999448B2

Abstract

A shielded connector (10) of the present invention comprises: a housing (20) having a fitting portion (21) to be fitted into a mounting hole (163); a connection terminal (52) that is held by the fitting portion (21) and connected to the other party's terminal by fitting the fitting portion (21) into the mounting hole (163); a shielding shell (30) covering the housing (20) and fastened to a shield case (160) by a bolt; and a sealing ring (40) having a peripheral lip (42) tightly attachable to the inner circumferential surface of the mounting hole (163) and fitted and attached to the outer circumferential surface of the housing (20). In the shielded connector, the shielding shell (30) is fastened to the housing (20) by a bolt, thereby being mounted in a state in which there is no backlash. When the fitting portion (21) is coaxially fitted into the mounting hole (163), the radial direction dimension of the peripheral lip (42) crushed by the inner circumferential surface of the mounting hole (163) is designed to be larger than the maximum value of the mounting tolerance of the fitting portion (21) to the mounting hole (163).

Description

Shield connector

The present invention relates to a shielded connector.

Conventionally, as a shielded connector attached to the case of an apparatus, for example, the thing of following patent document 1 is known. A mounting hole through which the housing of the shield connector can be fitted is formed through the case of the device. Also, the shield shell of the shield connector is bolted to the case of the device. In addition, a seal ring is fitted on the outer peripheral surface of the housing, and when the housing is fitted in the mounting hole, the inside of the case is sealed by the seal ring being in close contact with the inner peripheral surface of the mounting hole It has become.

JP, 2010-113909, A

In the above-described shield connector, since the shield shell is assembled with rattling to the housing, the assembly tolerance of the housing with respect to the mounting hole can be absorbed. On the other hand, when an external force such as vibration is applied to the housing, the contact portions of the terminals may slide and be worn. However, although it is possible to prevent wear of the contact parts of the terminals if the shield shell is assembled in a loose state by bolting the housing to the housing, etc., the seal ring is mounted inside the mounting hole due to the mounting tolerance of the housing to the mounting hole. There is a possibility that a portion not in close contact with the circumferential surface may occur, and waterproof performance can not be secured.

The present invention has been completed based on the above circumstances, and it is an object of the present invention to ensure the waterproof performance of a seal ring after preventing wear of contact portions of terminals.

The shield connector of the present invention is held by a housing having a fitting portion to be fitted into a mounting hole provided in a case of the device, and is held by the fitting portion, and the fitting portion is fitted into the mounting hole. It has a connection terminal connected to the standby terminal, a shield shell that covers the housing and is bolted to the case of the device, and an outer peripheral lip that can be in close contact with the inner peripheral surface of the mounting hole. And the shield shell is assembled with no rattling by bolting to the housing, and the outer peripheral lip is a mounting hole when the fitting portion is coaxially fitted to the mounting hole The dimension in the radial direction crushed by the inner circumferential surface is characterized in that it is configured to be larger than the maximum value of the assembly tolerance for the fitting hole of the fitting portion.

According to such a configuration, since the shield shell is assembled in a state without rattling with respect to the housing by bolting, the housing is vibrated by fixing the shield shell to the case of the device by bolting. It can be avoided. Therefore, the contact portions of the standby terminal and the connection terminal can be prevented from sliding and wearing.

Moreover, when the dimension in the radial direction in which the outer peripheral lip is crushed by the inner circumferential surface of the mounting hole is larger than the maximum value of the assembly tolerance for the mounting hole of the fitting portion, the fitting portion is eccentrically fitted to the mounting hole However, the outer peripheral lip always adheres to the inner peripheral surface of the mounting hole, and the waterproof performance of the seal ring can be secured.

The following configuration is preferable as an embodiment of the present invention.
The fitting portion includes a terminal receiving portion formed by receiving the connection terminal therein, and the terminal receiving portion intersects the fitting direction of the fitting portion with the attachment hole when the standby terminal and the connection terminal are connected. It is good also as composition attached to a fitting part so that movement is possible.
According to such a configuration, when there is an assembly tolerance with respect to the attachment hole of the fitting portion, this assembly tolerance can be absorbed. That is, in the state where the fitting portion is fitted in the mounting hole, the terminal accommodating portion can move freely in the direction intersecting with the fitting direction with respect to the fitting portion, and hence the position of the standby terminal of the device The connection terminal can be moved together, and the standby terminal and the connection terminal can be connected in a normal posture.

The shield shell may be configured to be bolted to the housing at a plurality of points.
According to such a configuration, since the shield shell is bolted at a plurality of points, it can be firmly fixed to the housing.

The shield shell may be configured integrally by tightening the upper member and the lower member with a common screw.
According to such a configuration, it is possible to reduce the number of bolt fastening points as compared to bolt fastening the upper member and the lower member with separate screws.

According to the present invention, it is possible to secure the waterproof performance of the seal ring while preventing the wear of the contact portions of the terminals.

Front view showing the shield connector attached and fixed to the case of the device Right side view showing the shield connector attached and fixed to the case of the device AA line sectional view in FIG. 2 Front view of shield connector Left side view of shield connector BB line cross section in FIG. 5 Top view of shield connector CC sectional view in FIG. 7 DD line cross section in FIG. 7 Right side view of shield connector

Embodiment
The shield connector 10 of the embodiment will be described with reference to the drawings of FIGS. 1 to 10. The shield connector 10 of the present embodiment is attached to a shield case 160 of a device (for example, an inverter or a motor of a vehicle such as a hybrid car or an electric car). A device-side connector (not shown) is disposed inside the shield case 160. The device-side connector is provided with a tab-like standby terminal (not shown).

The shield connector 10 can be fitted to the device-side connector. In the following, the vertical direction will be described based on the vertical direction of FIG. In the front-rear direction, the left side (the fitting direction with the device-side connector) is referred to as the front, and the right side (the removal direction with the device-side connector) as the rear with reference to the left-right direction in FIG.

The device is a device in which the device body is housed inside a shield case 160 made of a conductive material. As shown in FIG. 3, the shield case 160 has a hood portion 161 which is opened in such a manner as to penetrate the inside and the outside of the shield case 160, and the inside of the hood portion 161 is made an attachment hole 163. In addition, about an apparatus, only a part of shield case 160 is shown in figure, and the other part is abbreviate | omitted on drawing.

As shown in FIG. 1, a mounting portion 162 into which the mounting bolt 120 is tightened is formed above the hood portion 161 in the shield case 160. A bolt hole (not shown) is formed to open on the top surface of the mounting portion 162, and a female screw is formed on the inner peripheral surface of the bolt hole. Therefore, the mounting bolt 120 can be screwed into the bolt hole of the mounting portion 162.

As shown in FIGS. 6 and 9, the shield connector 10 includes a housing 20 made of synthetic resin, a shield shell 30 covering the housing 20, an internal conductive member 50 disposed inside the housing 20, and an end of the wire W. The relay terminal 70 is configured to be connected. Further, as shown in FIGS. 1 and 3, a shield member 12 such as a braided wire is fixed to the wire lead-out portion 11 from which the wire W in the shield connector 10 is pulled out. Are collectively covered along the conductive path. Further, a rubber boot 13 for covering and protecting the shield member 12 is attached to the wire lead-out portion 11.

As shown in FIG. 6, the internal conductive member 50 is, for example, a flexible conductor 51 made of a braided wire, a connection terminal 52 connected to the front end of the flexible conductor 51, and an L-shaped terminal connected to the rear end of the flexible conductor 51. It comprises 53 and so on. The connection terminal 52 is formed by arranging in the back and forth direction a square tube portion having an elastic contact piece resiliently contacting the stand-by terminal of the device and a barrel portion connected to the flexible conductor 51 by crimping or welding. It is supposed to be arranged.

The housing 20 is made of a synthetic resin and, as shown in FIG. 8, has a generally L-shape as a whole, one end projecting forward and the other end projecting downward. The rubber plug housing portion 23 disposed inside the wire lead portion 11 is formed at the other end of the housing 20, and the wire W is drawn downward from the wire lead portion 11. On the other hand, at one end of the housing 20, a fitting portion 21 that can be fitted to the mounting hole 163 of the device is formed. Further, the terminal accommodating portion 22 accommodating the connection terminal 52 is mounted on the front end of the fitting portion 21 in a state where the terminal accommodation portion 22 is prevented by the retainer 28 from coming forward. When connecting the stand-by terminal of the device and the connection terminal 52, the terminal accommodating portion 22 is movable in a direction intersecting with the fitting direction with respect to the mounting hole 163 of the fitting portion 21.

As shown in FIG. 9, the relay terminal 70 has a configuration in which a terminal portion 71 through which the fixing screw 140 is inserted and a barrel portion 72 to which a core wire exposed to the end of the wire W is connected are vertically arranged. It is done. The connection between the core wire of the electric wire W and the barrel portion 72 is not limited to pressure bonding, but may be performed by other various known connection methods such as welding.

Inside the rubber plug housing portion 23, a housing space in which the rubber plug 80 and the rubber plug retainer 90 are housed is formed. The housing space of the rubber plug housing portion 23 communicates with the inside of the housing 20. The rubber plug 80 is a sealing material made of a rubber material for waterproofing each electric wire W individually, and is in close contact with the inner peripheral surface of the rubber plug housing 23 to seal the inside of the housing 20. It is held in the housing space of the housing portion 23.

As shown in FIG. 6, a terminal fixing portion 24 is disposed inside a substantially right angle corner located between the fitting portion 21 and the rubber plug housing portion 23 in the housing 20. The fixing nut 25 is press-fitted. The L-shaped terminal 53 and the relay terminal 70 are disposed so as to overlap the fixing nut 25, and the L-shaped terminal 53 and the relay terminal 70 are electrically connected by inserting the fixing screw 140 and tightening the fixing nut 25. Ru.

Similarly, as shown in FIG. 6, at the rear of the terminal fixing portion 24 in the housing 20, a working hole 62 in which the cover 60 is mounted is formed. The cover 60 includes a rubber ring 61 in close contact with the inner circumferential surface of the working hole 62 to seal the inside of the housing 20. When the cover 60 is removed from the working hole 62, a pair of fixing screws 140 face the outside from the working hole 62. Therefore, a tool such as a hexagonal wrench is inserted from the working hole 62 to facilitate fastening work of the fixing screw 140. It can be carried out. After the work is completed, the inside of the housing 20 can be held in a sealed state by fitting the cover 60 into the work hole 62.

The housing 20 is covered by a shield shell 30 made of a conductive metal material, and as shown in FIGS. 3 and 4, the shield shell 30 is constructed by assembling the lower member 100 and the upper member 110 with each other. There is. The lower member 100 is formed by pressing a metal plate material such as aluminum or an aluminum alloy, and the upper member 110 is formed of a metal such as aluminum or an aluminum alloy and formed by die casting.

The lower member 100 mainly covers the rubber plug accommodating portion 23, and the upper member 110 mainly covers the fitting portion 21 and the terminal fixing portion 24. Further, the upper member 110 is formed with a mounting portion 111 mounted on the top surface of the mounting portion 162 of the shield case 160. As shown in FIG. 7, a pair of left and right bolt insertion holes 112 are formed through the attachment portion 111.

As shown in FIG. 8, a shell fixing portion 26 into which a fixing nut 25 is press-fitted is formed on the upper surface of the housing 20. On the other hand, a shell connecting portion 27 into which the fixing nut 25 is press-fitted is formed on the rear surface of the housing 20.

The upper member 110 is placed on the shell fixing portion 26, and the mounting screw 130 is inserted into a screw insertion hole formed substantially at the center of the upper surface of the upper member 110 and tightened in the fixing nut 25. The upper member 110 is fixed to the housing 20. Further, the lower member 100 and the upper member 110 are disposed in an overlapping manner in the shell connecting portion 27, and the connection screw 150 is inserted into the screw insertion holes formed in both

members

100 and 110 and the fixing nut 25 is tightened together. Thus, the two

members

100 and 110 are connected in an electrically connected state to be integrated as a shield shell 30 and fixed to the housing 20.

A seal ring 40 is fitted on the outer peripheral surface of the fitting portion 21. As shown in FIG. 3, when the fitting portion 21 is fitted in the mounting hole 163, the seal ring 40 is all around between the outer peripheral surface of the fitting portion 21 and the inner peripheral surface of the mounting hole 163. It is pinched over. Thereby, the inside of shield case 160 is held in a sealed state.

On the other hand, a seal ring 41 is fitted on the outer peripheral surface of the rubber plug housing portion 23. When the lower member 100 of the shield shell 30 is externally fitted to the rubber plug housing portion 23, the seal ring 41 is provided on the entire circumference between the outer peripheral surface of the rubber plug housing portion 23 and the inner peripheral surface of the lower member 100. It is held across. Thereby, the inside of the lower member 100 is held in the sealed state.

Now, in the present embodiment, since the shield shell 30 is bolted to the housing 20, for example, the dimensional tolerance of the shield case 160 is larger than the dimensional tolerance of the shield connector 10, so the fitting portion 21 is assembled to the mounting hole 163. In this case, an assembly tolerance may occur, and the fitting portion 21 may be fitted in the mounting hole 163 in an eccentric state. Here, in the conventional shield connector, the seal performance is impaired by the occurrence of a portion where the seal ring is not in close contact with the inner peripheral surface of the mounting hole 163. On the other hand, in the shield connector 10 of the present embodiment, since the outer peripheral lip 42 of the seal ring 40 is formed higher than the outer peripheral lip of the conventional seal ring, sealing performance can be ensured. . In other words, the dimension in the radial direction in which the outer peripheral lip 42 is crushed by the inner peripheral surface of the mounting hole 163 when the fitting portion 21 coaxially fits in the mounting hole 163 is the assembly tolerance for the mounting hole 163 of the fitting portion 21 It is larger than the maximum value of.

As described above, in the present embodiment, since the shield shell 30 and the housing 20 are integrally configured by the mounting screw 130 and the connecting screw 150 and the shield shell 30 is fixed to the shield case 160 by the mounting bolt 120, The housing 20 does not move against vibration. Further, since the relay terminal 70 is fixed to the housing 20, the vibration transmitted from the electric wire W is blocked by the housing 20. Even if all the vibrations can not be shut off by the housing 20, all the remaining vibrations are absorbed by the flexible conductor 51 in front of the terminal fixing portion 24. Therefore, the contact portions of the standby terminal and the connection terminal 52 Can prevent wear.

The present embodiment is configured as described above, and its operation will be described subsequently. First, after the two electric wires W are inserted into the lower member 100, the shield member 12, the rubber boot 13 and the like, the barrel portion 72 of the relay terminal 70 is crimped to the end of each electric wire W. Further, the connection terminal 52 is crimped to one end of the flexible conductor 51, and the L-shaped terminal 53 is crimped to the other end to form the internal conductive member 50. Then, the connection terminal 52 is inserted from the rear into the inside of the terminal accommodating portion 22, and the terminal accommodating portion 22 is attached to the front end portion of the fitting portion 21. Further, the L-shaped terminal 53 is placed on the terminal fixing portion 24, and the terminal portion 71 of the relay terminal 70 and the L-shaped terminal 53 are arranged in an overlapping manner.

On the other hand, the rubber plug 80 is inserted from the lower end opening of the lower member 100, and the rubber plug retainer 90 is mounted so as to hold the rubber plug 80. Next, the fixing screw 140 is inserted from the working hole 62, and the L-shaped terminal 53 and the relay terminal 70 are fixed to the housing 20 by tightening the fixing nut 25 of the terminal fixing portion 24. Thereafter, the cover 60 is attached to the working hole 62 and closed, and the inside of the housing 20 is sealed by the rubber ring 61.

Next, the lower member 100 is mounted so as to be externally fitted to the rubber plug housing portion 23 of the housing 20. Also, the upper member 110 is mounted from the back side of the housing 20. Then, the

members

100 and 110 are placed one on top of the other at the shell connection portion 27, and the connection screw 150 is tightened on the fixing nut 25 of the shell connection portion 27 to fix the

members

100 and 110 to the housing 20. Thereby, the shield shell 30 in which both the

members

100 and 110 are integrated is formed, and the housing 20 is covered by the shield shell 30. Thereafter, the shield member 12 and the rubber boot 13 are attached to the wire lead-out portion 11 to configure the shield connector 10.

Subsequently, the shield shell 30 is shielded by fitting the fitting portion 21 of the housing 20 into the mounting hole 163 of the shield case 160 and bolting the mounting portion 111 of the upper member 110 to the mounting portion 162 of the shield case 160. It is fixed to the case 160. At this time, the fitting portion 21 may be eccentrically fitted to the mounting hole 163. Even in this case, the seal ring 40 is in close contact with the inner peripheral surface of the mounting hole 163 over the entire circumference, so that the sealing performance is secured. In addition, since the terminal accommodating portion 22 is centered on and fitted to the device-side connector, the standby terminal and the connection terminal 52 are connected in a regular posture.

As described above, according to the present embodiment, since the shield shell 30 is assembled in a state without rattling with respect to the housing 20 by bolt fastening, the shield shell 30 is fixed to the shield case 160 of the device by bolt fastening. Thus, the housing 20 can be prevented from vibrating. Therefore, the contact portions of the standby terminal and the connection terminal 52 can be prevented from sliding and wearing.

Further, since the dimension in the radial direction in which the outer peripheral lip 42 is crushed by the inner peripheral surface of the mounting hole 163 is larger than the maximum value of the assembly tolerance for the mounting hole 163 of the fitting portion 21, the fitting portion 21 Even when eccentrically fitted, the outer peripheral lip 42 is always in close contact with the inner peripheral surface of the mounting hole 163, and the waterproof performance of the seal ring 40 can be secured.

The fitting portion 21 includes a terminal receiving portion 22 formed by receiving the connection terminal 52 therein. The terminal receiving portion 22 is connected to the attachment hole 163 of the fitting portion 21 when the standby terminal and the connection terminal 52 are connected. It is good also as composition attached to fitting part 21 so that free movement is possible in the direction which intersects the fitting direction. According to such a configuration, when there is an assembly tolerance with respect to the mounting hole 163 of the fitting portion 21, this assembly tolerance can be absorbed. That is, in a state in which the fitting portion 21 is fitted in the mounting hole 163, the terminal accommodating portion 22 can move in the direction intersecting with the fitting direction with respect to the fitting portion 21, so that waiting for the device The connection terminal 52 can be moved according to the position of the terminal, and the standby terminal and the connection terminal 52 can be connected in a normal posture.

The shield shell 30 may be configured to be bolted to the housing 20 at a plurality of points. According to such a configuration, since the shield shell 30 is bolted at a plurality of points, it can be firmly fixed to the housing 20.

The shield shell 30 may be configured integrally by fastening the upper member 110 and the lower member 100 together with the connection screw 150. According to such a configuration, it is possible to reduce the number of bolt fastening points as compared to bolt fastening the upper member 110 and the lower member 100 with separate screws.

Other Embodiments
The present invention is not limited to the embodiments described above with reference to the drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, although the terminal accommodating portion 22 is attached to the fitting portion 21 so as to be able to move freely, according to the present invention, even the connection terminal 52 is attached to be able to move freely inside the terminal accommodating portion. Good.

(2) Although the shield shell 30 composed of the lower member 100 and the upper member 110 is illustrated in the above embodiment, according to the present invention, a shield shell composed of one member may be bolted to the housing 20.

(3) Although the shield connector 10 attached to the shield case 160 of the inverter or the motor is illustrated in the above embodiment, according to the present invention, the shield connector 10 is applied to a shield connector attached to the case of another device other than the inverter or the motor. May be

DESCRIPTION OF SYMBOLS 10 ... Shield connector 20 ... Housing 21 ... Fitting part 22 ... Terminal accommodating part 30 ... Shield shell 40 ... Seal ring 42 ... Outer peripheral lip 52 ... Connection terminal 100 ... Lower member 110 ... Upper member 120 ... Mounting bolt 160 ... Shield case 163 ... Mounting hole

Claims

A housing having a fitting portion that fits into a mounting hole provided in a case of the device;
A connection terminal which is held by the fitting portion and which is connected to the standby terminal of the device by fitting the fitting portion into the mounting hole;
A shield shell that covers the housing and is bolted to the case of the device;
And an outer peripheral lip that can be in close contact with the inner peripheral surface of the mounting hole, and a seal ring fitted to the outer peripheral surface of the housing,
The shield shell is assembled with no rattling by bolting to the housing, and when the fitting portion is coaxially fitted to the mounting hole, the outer peripheral lip is within the mounting hole. A shield connector characterized in that a dimension in a radial direction crushed by a circumferential surface is larger than a maximum value of an assembly tolerance with respect to the mounting hole of the fitting portion.
The fitting portion includes a terminal receiving portion formed by receiving the connection terminal therein.
The terminal accommodating portion is mounted on the fitting portion so as to be able to move freely in a direction intersecting the fitting direction of the fitting portion with the attachment hole when the standby terminal and the connection terminal are connected. The shielded connector according to claim 1, characterized in that:
The shield connector according to claim 1, wherein the shield shell is bolted to the housing at a plurality of points.
The shield connector according to any one of claims 1 to 3, wherein the shield shell is integrally formed by fastening the upper member and the lower member together with a common screw.