JP2014150016A - Connector with shield, assembling method of connector with shield - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector with a shield having a simple structure and exhibiting excellent assembly workability and shield performance.SOLUTION: A connection member 5 to which a shield member 7 is attached is inserted into a clearance 9 of a body 25. When pushing the connection member 5 into the back, the connection member 5 runs on a taper part, and is inserted up to a protrusion 23. The outside diameter of an inner housing 1b in the protrusion 23 is slightly larger than the inside diameter of the connection member 5 (including the thickness of the shield member 7). Consequently, the connection member 5 is enlarged from the inside by means of the inner housing 1b, and pressed to the shield shell 3 side. More specifically, the shield member 7 folded to the outer surface of the connection member 5 is pressed against the shield shell 3. In this way, the protrusion 23 functions as a press part for pressing the shield member 7 against the shield shell 3.

Description

  The present invention relates to, for example, a shielded connector that blocks electromagnetic waves generated from a high-voltage wire harness routed in a vehicle or the like.

  Generally, it is known that electromagnetic noise due to high-frequency current is generated from a wire harness (electric wire) that supplies a motor driving current of a hybrid vehicle. For this reason, various shield structures for shielding electromagnetic noise have been proposed in order to prevent noise from being superimposed on a signal line such as an ECU (Electric Control Unit) and adversely affecting the electromagnetic noise.

  For example, Patent Document 1 discloses a wire harness that covers a shield material such as a braid and performs shield connection by caulking or crimping with a metal fastening member such as a ring or a band on the end portion of the shield shell. .

  Further, Patent Document 2 discloses a method of performing shield connection by placing the end portion of the shield tube on the rear portion of the dielectric housed in the shield shell and sandwiching the end portion with a fixture that is divided vertically. .

  Patent Document 3 covers an inner ring provided with a convex portion capable of reducing the diameter of a braided shield, and an outer ring provided with a concave portion on a portion of the inner ring that contacts the convex portion of the inner ring, and the cover is covered with a shield shell. A structure is disclosed in which a convex portion of an inner ring protruding from a concave portion of an outer ring is pressed when screwed into the outer ring, and the inner ring is reduced in diameter so that the shield braid is pressed and fixed to the shield shell.

JP 2005-276570 A JP 2004-327100 A JP 2008-288021 A

  The shield connection work of Patent Document 1 has problems such as a large number of work steps by caulking and crimping, and high equipment costs for crimping. Further, the methods described in Patent Documents 2 and 3 have a problem that the number of parts is larger and the structure is complicated than the method of caulking with a band or a ring, so that the number of assembling steps is increased and the cost is increased.

  In particular, in the shield connection structure of Patent Document 2, since the fixture is divided into upper and lower parts, and the right and left divided fixtures are engaged, an increase in contact resistance due to an increase in the number of contacts is caused, and the shielding performance is increased. There is a risk of deterioration. Further, in the structure described in Patent Document 3, since the inner ring structure that applies contact pressure to the braid and the shell at the time of shield connection is provided with a convex portion, the shield current density distribution of the ring becomes uneven, and the shield Performance may be degraded.

  The present invention has been made in view of such problems, and an object of the present invention is to provide a shielded connector having a simple structure and excellent assembly workability and shielding performance.

  In order to achieve the above-described object, the first invention provides a main body portion including a housing, a conductor portion inserted into the housing, a shield member electrically connected to the conductor portion, and the shield member in the main body portion. An end portion of the shield member is attached to the connection member, the connection member is inserted into a gap between the housing and the conductor portion, and an inner surface of the gap The connector with shield is characterized in that a pressing portion that presses the connection member in a direction in which the shield member is pressed against the conductor portion is formed with the insertion of the connection member.

  The housing includes an outer housing positioned on the outer peripheral side of the conductor portion and an inner housing positioned on the inner peripheral side of the conductor portion, and the gap is formed between the conductor portion and the inner housing. The pressing portion may be a convex portion formed at a predetermined distance from the end surface of the inner housing.

  A plurality of spring pieces may be formed on one end side of the connection member along the insertion direction of the connection member, and the connection member may be inserted into the gap from the spring piece side.

  The conductor portion and the housing may have a fitting structure that can be fitted to each other. The connection member and the housing may have a fitting structure that can be fitted to each other.

  The diameter of the connecting member may change with respect to the insertion direction into the gap.

  According to the first invention, when the connecting member to which the shield member is attached is inserted into the main body portion, a pressing portion for pressing the shield member against the conductor portion is provided along with the insertion. It is possible to reduce electrical contact resistance between the conductor and the contact resistance. Therefore, the shielding property is excellent. Further, since the assembly is completed simply by covering the connecting member with the shield member and inserting the shield member into the main body, the caulking operation and the crimping operation are unnecessary, and the assembling workability is excellent.

  Further, if the pressing portion is a convex portion provided on the outer peripheral surface of the inner housing, the housing can be easily manufactured, and the connecting member can be surely expanded in diameter by the convex portion to press the shield member against the conductor portion. it can.

  In addition, by providing a plurality of spring pieces on one side of the connection member, for example, when the connection member is pushed and spread from the inside, the diameter of the spring piece portion is expanded, and the contact pressure of the spring piece portion can be made uniform and stable. it can. For this reason, the contact resistance is uniform and stable over substantially the entire circumference of the connection member, and the shield performance can be improved by uniforming and stabilizing the shield current density.

  Further, the conductor part and the housing are fixed by the fitting structure, so that the conductor part can be prevented from falling off. Further, the connecting member and the housing are fixed by the fitting structure, so that the connecting member can be prevented from falling off.

  Moreover, the insertion property with respect to the main-body part of a connection member improves by changing the diameter of a connection member toward an insertion direction, for example, making it respond | correspond to the shape of a press part.

  A second invention is a method of assembling a shielded connector according to the first invention, wherein an end of the shield member is folded back so as to cover an outer surface of the connection member, and the shield member is attached to the connection member When the connection member is inserted into the gap between the housing and the conductor portion, the connection member is deformed by the pressing portion, and the shield member is pressed against the conductor portion, and the connection member is moved to the body portion. It is the assembly method of the female connector with a shield characterized by connecting to.

  According to the second invention, a shielded female connector having excellent shielding performance can be assembled without performing caulking or crimping operations.

  According to the present invention, it is possible to provide a shielded connector having a simple structure and excellent assembly workability and shielding performance.

2 is an exploded perspective view of the female connector 10. FIG. (A) is an exploded view of the housing 1 and the shield shell 3, and (b) is an assembly view. (A) is an exploded view of the shield member 7 and the connection member 5, (b) is a cross-sectional view showing a state in which the shield member 7 is inserted into the connection member 5, and (c) is a cross-sectional view in a state in which the shield member 7 is folded back. . (A) is an exploded cross-sectional view of the connection member 5 and the main body 25, (b) is a cross-sectional view showing a state in which the connection member 5 is inserted into the main body 25, and (c) is an assembly of the connection member 5 and the main body 25. Sectional drawing. (A) is an exploded sectional view of connecting member 5a and main-body part 25, (b) is an assembly sectional view of connecting member 5a and main-body part 25.

  Hereinafter, a female connector according to an embodiment of the present invention will be described. FIG. 1 is an exploded perspective view of the female connector 10. The female connector 10 mainly includes a housing 1, a shield shell 3, a connection member 5, a shield member 7, and the like. In the following drawings, the illustration of the internal cable is omitted.

  The housing 1 includes an outer housing 1a and an inner housing 1b. The housing 1 is made of, for example, resin, and the outer housing 1a and the inner housing 1b are integrally formed. In this case, the outer housing 1a and the inner housing 1b may be formed as separate bodies and integrated with an adhesive or the like. On one end face of the housing 1, a gap 9 is formed between the outer housing 1a and the inner housing 1b. That is, the gap 9 on one end surface of the housing 1 is formed in a substantially annular shape around the entire inner surface of the outer housing 1a.

  A hole 21 that is a through hole is provided in the center of the inner housing 1b. The hole 21 is a part through which the cable is inserted. In FIG. 1, only one hole 21 through which the cable is inserted is shown, but a plurality of holes can be formed according to the number of cables required. A guide 11 is formed on the inner surface of the outer housing 1a. The guide 11 is a protrusion formed on the inner surface of the outer housing 1a and formed from the end surface toward the inside. For example, the guide 11 is formed at a plurality of locations on the inner surface of the outer housing 1a. The details of the internal structure of the housing 1 will be described later.

  The shield shell 3 is a metal conductor portion and is formed in a substantially annular shape. The shape of the shield shell 3 corresponds to the gap 9 of the housing 1. Therefore, the shield shell 3 can be inserted into the gap 9 of the housing 1. A plurality of slits 15 are formed in the shield shell 3 along the direction of insertion into the housing 1. The slit 15 is formed at a position corresponding to the guide 11 formed in the gap 9.

  A fitting portion 13 is formed in a part of the shield shell 3. The fitting portion 13 is fitted with a fitting portion (not shown) formed in the gap 9 of the housing 1. That is, the shield shell 3 is fixed to the housing 1 by the fitting portion 13.

  The connection member 5 is made of, for example, metal, and is a substantially annular member like the shield shell 3. Since the connection member 5 is slightly smaller than the shield shell 3, the connection member 5 can be inserted into the shield shell 3.

  A plurality of spring pieces 19 are provided from one end of the connection member 5 along the insertion direction into the shield shell 3. The spring piece 19 is formed over substantially the entire circumference of the connection member 5. The function of the spring piece 19 will be described later.

  A fitting portion 17 is formed on a part of the connection member 5. The fitting portion 17 is fitted with a fitting portion (not shown) formed in the gap 9 of the housing 1. That is, the connection member 5 is fixed to the housing 1 by the fitting portion 13.

  The shield member 7 is a cylindrical member, for example, a metal braid. An electric cable (not shown) is inserted into the shield member 7. Note that the material and form of the shield member 7 are not limited as long as the shielding property can be secured. The shield member 7 is attached to the connection member 5.

  Next, a method for assembling the female connector 10 will be described. FIG. 2 is a partial cross-sectional view of the housing 1 and the shield shell 3. As shown in FIG. 2A, a gap 9 is formed between the outer housing 1a and the inner housing 1b. A convex portion 23 is provided at a portion that is separated from the end surface of the housing 1 (the insertion side of the shield shell 3) by a predetermined distance in the interior direction of the housing 1. The convex portion 23 is a portion that is formed in the entire circumference of the outer surface of the inner housing 1b and projects in the direction of the outer housing 1a so that the gap 9 is narrowed. The convex portion 23 is formed in a tapered shape so as to gradually protrude from the insertion side of the shield shell 3.

  When the shield shell 3 is inserted into the gap 9 (arrow A in the figure), as shown in FIG. 2B, the shield shell 3 is fixed to the housing 1 so as to be in close contact with the inner surface of the outer housing 1a. At this time, the gap 9 is not completely closed by the shield shell 3, and the gap 9 remains between the inner surface of the shield shell 3 and the inner housing 1b.

  When the shield shell 3 is inserted into the housing 1, the slit 15 of the shield shell 3 shown in FIG. 1 is inserted along the guide 11. Therefore, the shield shell 3 can be inserted straight into the housing 1. Further, in a state where the shield shell 3 is completely inserted into the housing 1, the fitting portion 13 is fitted into the housing 1 and the shield shell 3 is fixed to the housing 1 (not shown).

  In a state where the shield shell 3 is completely fixed to the housing 1, the end portion of the shield shell 3 can be connected to the shield portion of the male connector to be connected on the other side (not shown) of the housing 1. The housing 1 to which the shield shell 3 is fixed is referred to as a main body portion 25.

  FIG. 3 is a diagram illustrating a method of attaching the shield member 7 to the connection member 5. First, as shown to Fig.3 (a), the edge part of the shield member 7 is penetrated inside the connection member 5 (arrow C direction in the figure). FIG. 3B is a cross-sectional view of the state in which the shield member 7 is inserted into the connection member 5 and the shield member 7 is pulled out from the connection member 5 by a predetermined length. The shield member 7 is inserted into the connecting member 5 from the side opposite to the spring piece 19 forming side of the connecting member 5.

  Next, as shown in FIG. 3C, the end of the shield member 7 is folded back to the outer surface side of the connection member 5 (arrow D in the figure). As described above, the shield member 7 can be attached to the connection member 5. The fitting portion 17 formed on the connection member 5 and fitted to the housing 1 also has a function of locking the shield member 7 to the connection member 5.

  FIG. 4 is a diagram illustrating a method of mounting the connection member 5 to which the shield member 7 is attached to the main body portion 25. As shown in FIG. 4A, the connecting member 5 to which the shield member 7 is attached is inserted into the gap 9 of the main body 25 (in the direction of arrow B in the figure). At this time, the connecting member 5 is inserted into the gap 9 between the shield shell 3 and the inner housing 1b with the forming direction of the spring piece 19 as the tip. FIG. 4B is a diagram illustrating a state in which the connection member 5 is inserted into the gap 9 up to the front of the convex portion 23 (and the subsequent tapered portion).

  When the connecting member 5 is further pushed in from this state, the connecting member 5 rides on the tapered portion and is inserted to the convex portion 23. At this time, the outer diameter of the inner housing 1b at the convex portion 23 is slightly larger than the inner diameter of the connection member 5 (including the thickness of the shield member 7). Therefore, the diameter of the connecting member 5 is increased from the inside by the inner housing 1b (convex portion 23), and is pressed against the shield shell 3 side (arrow E in the figure). That is, the shield member 7 folded back on the outer surface of the connection member 5 is pressed against the shield shell 3. Thus, the convex part 23 functions as a pressing part for pressing the shield member 7 against the shield shell 3.

  In addition, since the some spring piece 19 is formed in the edge part of the connection member 5, the connection member 5 is expanded by the convex part 23 substantially uniformly over a perimeter. The spring piece 19 is formed by a slit provided at the end of the connecting member 5 and can be easily elastically deformed in the diameter-expanding direction. Therefore, the diameter of the connection member 5 can be increased substantially uniformly. With the connecting member 5 completely inserted into the main body portion 25, the fitting portion 17 is engaged with the housing 1, and the connecting member 5 is fixed to the main body portion 25. As described above, the female connector 10 is assembled.

  As described above, according to the present embodiment, it is possible to easily assemble the female connector 10 with a shield function without performing caulking or crimping operations. Further, the shield member 7 is simply folded over the connecting member 5 and the assembly work is easy. Further, when the connection member 5 is inserted into the main body portion 25, the connection member 5 is pressed against the shield shell 3 by the convex portion 23. For this reason, the shield member 7 and the shield shell 3 can be made to contact reliably.

  Further, since the spring piece portion formed by the slit provided at the end of the connection member 5 is expanded substantially uniformly over the entire circumference of the connection member 5, the shield member 7 is substantially uniform over the entire circumference. It can be pressed against the shield shell 3 by force.

  Moreover, since the fitting part 13 is provided in the shield shell 3, the shield shell 3 can be fixed to the housing 1 reliably. Similarly, since the fitting part 17 is provided in the connection member 5, while being able to fix the connection member 5 to the housing 1 reliably, the shield member 7 can be hold | maintained.

  Next, another embodiment will be described. FIG. 5 is a view showing an assembling method of the female connector 10a using the connecting member 5a. First, the main body 25 is assembled by the method described above. Further, the shield member 7 is attached to the connection member 5a by the method described above. Here, unlike the connection member 5, the connection member 5 a has a diameter that changes with respect to the direction of insertion into the main body 25. In the example shown in the figure, the diameter of the insertion side to the main body 25 is expanded. Note that the inner diameter of the enlarged portion of the connection member 5 is slightly smaller than the outer diameter of the convex portion 23.

  First, as shown to Fig.5 (a), the connection member 5a is inserted in the main-body part 25 (arrow F in the figure). At this time, since the diameter of the end of the connection member 5 a is increased, the connection member 5 a can be easily inserted into the main body portion 25. When the connecting member 5a is inserted up to the convex portion 23 of the main body 25, the diameter of the connecting member 5a is increased by the convex portion 23 and the shield member 7 is pressed against the shield shell 3 as shown in FIG. Arrow G). Thus, the female connector 10a is assembled.

  Even if the diameter is changed with respect to the insertion direction like the connection member 5a, the same effect as the connection member 5 can be obtained. In addition, an insertion operation | work is easy by changing the diameter of the connection member 5a according to the shape of the convex part 23. FIG.

  As mentioned above, although embodiment of this invention was described referring an accompanying drawing, the technical scope of this invention is not influenced by embodiment mentioned above. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the technical idea described in the claims, and these are naturally within the technical scope of the present invention. It is understood that it belongs.

  For example, the connecting members 5 and 5a are provided with slits, but the slits are not necessarily required if the connecting members 5 and 5a can be expanded in a substantially uniform diameter. Further, the fitting portion 13 formed on the shield shell 3 may have another structure as long as it can be fixed to the housing 1. Similarly, the fitting portion 17 formed on the connection members 5 and 5a may have another structure as long as it can be fixed to the housing 1.

  In addition, the shield member 7 is inserted inside the connection members 5 and 5a and folded back to the outer peripheral side. However, the connection members 5 and 5a are inserted into the shield member 7 and the end portions of the shield members 7 are inserted. It may be folded back inside the connecting members 5 and 5a.

  Moreover, although the convex part 23 was formed in the outer surface of the inner housing 1b as a press part, this invention is not limited to this. For example, the convex portion may be formed in a tapered shape on the inner surface side of the shield shell 3 at the same position as the convex portion 23. Even if it does in this way, if the connection member 5 is inserted to a convex part, the connection member 5 can be pressed against the shield shell 3. That is, if the connecting member 5 is inserted to a predetermined position of the main body 25 and the shield member 7 attached to the connecting member 5 is pressed against the shield shell 3, the pressing portion is formed at any position. May be.

DESCRIPTION OF SYMBOLS 1 ......... Housing 1a ......... Outer housing 1b ......... Inner housing 3 ......... Shield shell 5, 5a ......... Connection member 7 ......... Shield member 9 ......... Gap 10 ......... Female connector 11 ... …… Guide 13 ………… Fitting part 15 ………… Slit 17 ………… Fitting part 19 ………… Spring piece 21 ………… Hole 23 ……… Convex part 25 ………… Body part

In order to achieve the above-described object, the first invention provides a main body portion including a housing, a conductor portion inserted into the housing, a shield member electrically connected to the conductor portion, and the shield member in the main body portion. An end portion of the shield member is attached to the connection member, the connection member is inserted into a gap between the housing and the conductor portion, and an inner surface of the gap In accordance with the insertion of the connecting member, a pressing portion that presses the connecting member in a direction of pressing the shield member against the conductor portion is formed, and the pressing portion is formed at a predetermined distance from the end surface of the housing. And a convex portion formed in a tapered shape so as to gradually protrude from the insertion side of the connection member, and on one end side of the connection member, there are a plurality of protrusions along the insertion direction of the connection member. Ne piece is formed, the connecting member, the inserted spring side to the gap, said connecting member to the insertion direction into the gap, characterized that you change diameter by the pressing portion This is a shielded connector.

The housing includes an outer housing positioned on the outer peripheral side of the conductor portion and an inner housing positioned on the inner peripheral side of the conductor portion, and the gap is formed between the conductor portion and the inner housing. A guide part may be formed on the inner surface of the outer housing, and a slit may be formed in the conductor part along the guide part.

Claims (7)

A main body comprising a housing and a conductor inserted into the housing;
A shield member electrically connected to the conductor portion;
A substantially annular connecting member for connecting the shield member to the body portion;
Comprising
An end of the shield member is attached to the connection member,
The connecting member is inserted into a gap between the housing and the conductor portion;
A shielded connector, wherein a pressing portion that presses the connection member in a direction in which the shield member is pressed against the conductor portion is formed on the inner surface of the gap as the connection member is inserted. The housing has an outer housing located on the outer peripheral side of the conductor part, and an inner housing located on the inner peripheral side of the conductor part,
The gap is formed between the conductor portion and the inner housing,
The shielded connector according to claim 1, wherein the pressing portion is a convex portion formed at a predetermined distance from an end surface of the inner housing. On one end side of the connection member, a plurality of spring pieces are formed along the insertion direction of the connection member,
The shielded connector according to claim 1, wherein the connecting member is inserted into the gap from the spring piece side.   The shielded connector according to any one of claims 1 to 3, wherein the conductor portion and the housing have a fitting structure that can be fitted to each other.   The shielded connector according to any one of claims 1 to 4, wherein the connection member and the housing have a fitting structure that can be fitted to each other.   The shielded connector according to any one of claims 1 to 5, wherein a diameter of the connecting member changes with respect to a direction in which the connecting member is inserted into the gap. A method of assembling a shielded connector according to any one of claims 1 to 6,
Fold the end of the shield member so as to cover the outer surface of the connection member, and attach the shield member to the connection member,
When the connecting member is inserted into the gap between the housing and the conductor portion, the connecting member is deformed by the pressing portion and the shield member is pressed against the conductor portion, and the connecting member is attached to the main body portion. A method of assembling a shielded connector characterized by connecting.

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