JP2011009108A - Shield connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a terminal block from being broken by pulling its electric wire.SOLUTION: A shield connector fixed to an instrument side case includes a terminal 20 connected to the terminal block arranged in the instrument side case, the electric wire W connected to the terminal 20, a braided wire shield-connected to the instrument side case while surrounding the electric wire W, and a mold part 30 having a body 31 formed to be one with the electric wire W, wherein the mold part 30 is separate from the terminal 20 to be fixed to the instrument side case.

Description

  The present invention relates to a shield connector fixed to a device side case.

  As this type of shield connector, for example, the one described in Patent Document 1 below is known. The shield connector includes a housing that is inserted into the mounting hole of the device-side case, and terminals that are accommodated in the housing. One end of the terminal is a device-side connecting portion connected to a terminal block disposed inside the device-side case, and the other end of the terminal is a wire connecting portion connected to the electric wire. A terminal accommodating chamber for accommodating a terminal is formed inside the housing, and a lance for preventing the terminal from being detached is formed in the terminal accommodating chamber. The housing is covered with a shield shell, and the housing is fixed by shield-connecting the shield shell to the device side case. The shield shell is shield-connected to a shield portion that covers the electric wire.

JP 2002-31396 A

  By the way, when the terminal is prevented from coming off by the lance, the terminal is usually provided with a locking recess, and a locking projection that fits into the locking recess is provided on the lance. As a result of being bent, it enters the locking recess while swinging and displacement, so that a predetermined clearance is formed between the locking projection and the locking recess. Here, if the wire is pulled before the device side connection part is connected to the terminal block, the wire connection part connected to the wire is pulled, the locking projection comes into contact with the locking recess, and the load is directly applied to the lance. Will take. However, if the device side connection is connected to the terminal block with clearance between the locking projection and the locking recess, the load will be directly applied to the terminal block when the wire is pulled. There is a risk.

  This invention is completed based on the above situations, Comprising: It aims at preventing that a terminal block is damaged when an electric wire is pulled.

  The present invention is a shielded connector fixed to a device-side case, and includes a terminal connected to a terminal block disposed inside the device-side case, a wire connected to the terminal, and a device surrounding the wire. It has a shield part that is shield-connected to the side case, and a mold part that has a resin molded part that is molded integrally with the electric wire. The mold part is separate from the terminal and is fixed to the equipment side case. It has the characteristics.

  According to such a configuration, when the electric wire is pulled, the molded portion formed integrally with the electric wire is pulled, but since the molded portion is fixed to the device-side case, the device side Pulling force is transmitted to the case. Further, since the mold part is provided separately from the terminal, the tensile force is not transmitted to the terminal. Therefore, a load is not directly applied to the terminal block connected to the terminal, and damage to the terminal block can be prevented.

The following configuration is preferable as an embodiment of the present invention.
A shield shell that is shield-connected to the shield portion while surrounding the electric wire and is fixed to the device-side case may be provided, and the mold portion may be fixed to the device-side case by being fixed to the shield shell. .
According to such a configuration, the mold part is fixed to the shield shell, and the mold part is fixed by fixing the shield shell to the device side case. Thereafter, the shield portion may be shield-connected to the shield shell.

A housing interposed between the mold part and the shield shell, a first seal part for waterproofing between the electric wire drawn from the mold part and the housing, and a second seal part for waterproofing between the housing and the shield shell; It is good also as a structure provided with.
According to such a structure, between the electric wire and the housing can be waterproofed by the first seal portion, and between the housing and the shield shell can be waterproofed by the second seal portion.

It is good also as a structure provided with the holding member which is embed | buried under the resin molding part of a mold part, and crimps | bonds the core wire exposed by removing a part of coating | cover of an electric wire.
According to such a structure, a core wire can be fixed to a mold part by fixing the holding member which crimped | bonded the core wire with the mold part.

The shield connector may have a collective shield structure in which a plurality of electric wires are collectively surrounded by a shield portion, and the plurality of electric wires may be formed integrally with the resin molding portion.
According to such a configuration, since the plurality of electric wires are integrally formed by the resin molding portion, it is not necessary to provide an individual resin molding portion for each electric wire.

The housing may have a fitting recess that opens to the mold portion side, and the mold portion may have a fitting protrusion that fits inside the fitting recess.
According to such a configuration, the mold part can be reliably assembled to the housing by a simple operation of fitting the fitting protrusion into the fitting recess.

  According to the present invention, it is possible to prevent the terminal block from being damaged when the electric wire is pulled.

Exploded perspective view of shield connector Plan view of shield connector Rear view of shield connector Front view of shield connector It is the sectional view on the AA line of FIG. 4, Comprising: The figure which showed the state fixed to the apparatus side case FIG. 5 is a cross-sectional view taken along line B-B in FIG. 4 and shows a state fixed to the device-side case. It is CC sectional view taken on the line of FIG. 4, Comprising: The figure which showed the state by which the apparatus side case was fixed Partial cutaway side view of shield connector

<Embodiment>
An embodiment of the present invention will be described with reference to the drawings of FIGS. FIG. 1 is an exploded perspective view of a shield connector 10 according to the present embodiment. The shield connector 10 includes, in order from the left side of the figure, a plurality of terminals 20, a mold part 30, a rubber ring 40, a housing 50, a rubber plug 60, a back retainer 70, a rubber packing 80, and a shield connected to the terminals of the plurality of electric wires W. A shell 90, a caulking ring 100, and the like are provided. In the following description, the front-rear direction is based on the axial direction of the electric wire W, and the drawing direction of the electric wire W connected to the terminal 20 starting from the mold part 30 is the front.

  The shield connector 10 is connected to a device such as an automotive inverter. As shown in FIG. 6, the device includes a device-side case C that houses a device main body (not shown), a terminal block T that is connected to the device main body, and the like. The device side case C is made of metal and is fixed to the body (not shown) of the automobile. For this reason, the device side case C has a function of electrically connecting the shield shell 90 to the body while having a function of fixing the shield connector 10. Further, an attachment hole C1 for attaching the shield connector 10 is formed through the device side case C.

  The terminal 20 is formed by punching and bending a metal thin plate. As shown in FIG. 1, the terminal 20 includes a device-side connection portion 21 having a circular hole 21A formed therethrough, a wire-side connection portion 22 having a pair of barrel pieces 22A, and the like. As shown in FIG. 7, the circular hole 21A is arranged coaxially with the fixing hole T1 formed in the terminal block T, and the connection bolt B1 is passed through the circular hole 21A and tightened to the fixing hole T1. As a result, the device side connecting portion 21 and the terminal block T are connected so as to be conductive.

  The electric wire W has a known configuration in which the core wire W1 is covered with a coating W2. In the present embodiment, as shown in FIGS. 5 to 7, the three electric wires W arranged side by side are collectively covered with one braided wire (an example of the “shield part” of the present invention) S. In other words, the shield connector 10 is a collective shield connector 10. The end of the electric wire W is in a state where the core wire W1 is exposed by removing the covering W2, as shown in FIG. 7, and the exposed core wire W1 is caulked by a pair of barrel pieces 22A as shown in FIG. By attaching, the electric wire side connection part 22 and the electric wire W are connected so that conduction | electrical_connection is possible.

  As shown in FIG. 1, the mold part 30 has a main body part (an example of the “resin molding part” of the present invention) 31 that is molded integrally with the electric wire W. The mold part 30 is separate from the terminal 20, and is set so that the electric wire W having a predetermined length is held between the terminal 20 and the main body part 31. As shown in FIG. 5, the substantially rear half of the main body 31 is constituted by three fitting protrusions 34 that are partitioned for each electric wire W. These fitting protrusions 34 can be fitted into fitting recesses 51 of the housing 50 described later.

  As shown in FIG. 7, a crimp terminal (an example of the “holding member” of the present invention) 32 is crimped to the electric wire W embedded in the main body 31. The crimp terminal 32 crimps the core wire W1 exposed by removing a part of the coating W2 of the electric wire W. Since the main body portion 31 is formed so as to embed the crimp terminal 32 and the core wire W1 connected to the crimp terminal 32, not only the covering W2 but also the core wire W1 is directly fixed by the main body portion 31. Accordingly, the electric wire W is restricted from moving relative to the mold part 30 in the front-rear direction (axial direction) as a whole.

  Moreover, the mold part 30 has a flange part 33 that projects outward in the radial direction of the electric wire W at the front end part (right end part in FIG. 7) of the main body part 31. The flange portion 33 is adapted to fit inside an attachment recess 94 described later of the shield shell 90. As shown in FIG. 6, a metal bracket 37 is integrally formed on the upper portion of the flange portion 33. The bracket 37 has a pair of bolt holes 38 formed therethrough. The mold part 30 is fixed to the shield shell 90 by tightening the bolt hole 38 to the shield shell 90 through the fixing bolt B2.

  As shown in FIG. 6, a small hood portion 39 is formed on the lower portion of the front surface of the mold portion 30 so as to protrude forward. A mating connector (not shown) can be fitted inside the hood portion 39. On the back wall of the hood portion 39, a male terminal having a rod shape is provided so as to protrude forward. This male terminal can be connected to a female terminal provided on the mating connector.

  The housing 50 is made of a synthetic resin and has a horizontally long flat shape as shown in FIG. The housing 50 has a fitting recess 51 that opens forward and accommodates each electric wire W individually. Each fitting recess 51 is formed corresponding to each fitting protrusion 34 of the mold part 30, and each fitting protrusion 34 is fitted inside each fitting recess 51 as shown in FIG. 5. It is possible.

  A partition wall 52 that partitions adjacent fitting recesses 51 is fitted into a groove 35 formed between adjacent fitting protrusions 34. When the front end of the partition wall 52 abuts the inner end of the groove portion 35, the fitting operation between the mold portion 30 and the housing 50 is restricted. Thus, the mold part 30 can be reliably assembled to the housing 50 by a simple operation of fitting each fitting protrusion 34 into each fitting recess 51.

  As shown in FIG. 1, a peripheral wall 53 is provided around the front end of the housing 50 so as to surround the three fitting recesses 51. As shown in FIG. 5, the peripheral wall 53 comes into contact with a step 36 provided around the base end side of each fitting protrusion 34. This also restricts the fitting operation between the mold part 30 and the housing 50.

  A rubber ring mounting groove 57 for mounting a rubber ring (an example of the “second seal portion” of the present invention) 40 is provided around the peripheral surface of the peripheral wall 53. The rubber ring mounting groove 57 is formed one step lower than the peripheral surface of the peripheral wall 53. Since the rubber ring 40 is sandwiched between the step of the rubber ring mounting groove 57 and the step 36 of the mold part 30, as shown in FIG. The rubber ring 40 is restricted from moving in the front-rear direction. Further, since the rubber ring 40 is in close contact with the shield shell 90, the space between the shield shell 90 and the housing 50 can be waterproofed.

  An electric wire insertion hole 54 through which the electric wire W is inserted is formed through the back wall of the fitting recess 51. A gap is formed between the wall portion constituting the electric wire insertion hole 54 and the tip of the fitting projection 34. An electric wire W having a predetermined length is held in the gap.

  A rubber plug mounting hole 55 for mounting a rubber plug (an example of the “first seal portion” of the present invention) 60 is formed behind the electric wire insertion hole 54. The rubber plug mounting hole 55 is individually formed for each wire insertion hole 54. When the rubber plug 60 is mounted in each rubber plug mounting hole 55, the rubber plug 60 is in close contact with both the outer peripheral surface of the electric wire W and the inner peripheral surface of the rubber plug mounting hole 55, so that the inside of the housing 50 can be waterproofed. .

  Further, a retainer mounting hole 56 for mounting the back retainer 70 is formed behind the rubber plug mounting hole 55. The back retainer 70 has a structure in which a pair of halves are assembled to each other. When the back retainer 70 is mounted in the retainer mounting hole 56, the three rubber stoppers 60 are collectively prevented.

  As shown in FIG. 1, the shield shell 90 is made of a metal, and includes a housing cylinder portion 91 having a horizontally long cylindrical shape, a mounting piece portion 92 that projects from the front end of the housing tube portion 91 to the side, and the like. Configured. Inside the accommodating cylinder 91, the mold part 30 and the housing 50 are accommodated.

  The attachment piece 92 has a horizontally long substantially square shape, and bolt insertion holes 93 are formed through the four corners of the attachment piece 92. As shown in FIG. 8, the mounting bolt B <b> 3 can be inserted into the bolt insertion hole 93. The mounting shell B3 is passed through the bolt insertion hole 93 and fastened to the device-side case C, whereby the shield shell 90 is fixed to the device-side case C and is shield-connected.

  On the other hand, as shown in FIG. 5, the braided wire S is shield-connected to the accommodating cylinder 91 by caulking the caulking ring 100 so as to sandwich the braided wire S as shown in FIG. It has become. Thereby, the shield conductive path formed by collectively shielding the plurality of electric wires W by the braided wire S, the shield shell 90, and the device side case C is formed.

  As shown in FIG. 7, a mounting recess 94 is formed in the front surface of the mounting piece 92 corresponding to the mounting hole C <b> 1 of the device side case C. The mounting recess 94 is open on the device side case C side and has substantially the same opening diameter as the mounting hole C1. The flange portion 33 of the mold portion 30 can be fitted inside the mounting recess 94. Thereby, when the electric wire W is pulled back, the mold part 30 is prevented from coming off by the shield shell 90.

  A screw hole is formed at a position corresponding to the bolt hole 38 of the bracket 37 in the mounting recess 94, and the fixing bolt B2 can be screwed into the screw hole. Therefore, the mold part 30 is fixed to the shield shell 90 by passing the fixing bolt B <b> 2 through the bolt hole 38 and fastening it to the screw hole.

  A packing mounting groove 95 is provided around the mating surface of the mounting piece 92 with the outer wall of the device-side case C. A rubber packing 80 can be mounted in the packing mounting groove 95. When the shield shell 90 is fixed to the device-side case C, the rubber packing 80 comes into close contact with both the packing mounting groove 95 and the outer wall of the device-side case C, so that the inside of the shield shell 90 is waterproofed.

  The present embodiment is configured as described above, and its operation will be described subsequently. First, a method for assembling the shield connector 10 will be briefly described. As shown in FIG. 1, when connecting the terminal 20 to the electric wire W, the rubber ring 40, the housing 50, the rubber plug 60, the shield shell 90, the caulking ring 100, the crimp terminal 32, and the like are passed through the electric wire W in advance. . Then, the core W1 is exposed by removing the covering W2 at the end of the electric wire W, and the terminal 20 is connected to the electric wire W by crimping the core W1 with a pair of barrel pieces 22A. Further, the core wire W1 is exposed by removing the coating W2 of the electric wire W slightly behind the terminal 20, and the crimp terminal 32 is fixed by crimping the core wire W1.

  The portion crimped by the crimp terminal 32 of the three electric wires W is set in the molding space of a molding die (not shown), the die is closed, and the molten resin is injected to mold the mold. Part 30 is formed. When the molten resin has cooled and solidified, the molding of the mold part 30 is completed by removing the mold part 30 from the mold. Next, the rubber ring 40 is fitted into the rubber ring mounting groove 57 of the housing 50, and the fitting protrusions 34 are fitted into the fitting recesses 51, whereby the mold part 30 and the housing 50 are assembled together. .

  Further, each rubber plug 60 is mounted in each rubber plug mounting hole 55, and the back retainer 70 is mounted in the retainer mounting hole 56, thereby preventing the rubber plug 60 from coming off. Then, the rubber packing 80 is mounted in the packing mounting groove 95 of the shield shell 90, and the molded part 30 and the housing 50 assembled together are inserted into the housing cylinder part 91. Thereafter, the fixing bolt B2 is passed through the bolt hole 38 and fastened to the screw hole of the shield shell 90. Thereby, the mold part 30 is fixed to the shield shell 90. Finally, the braided wire S is shield-connected to the shield shell 90 by caulking with the caulking ring 100 in a state where the braided wire S is put on the rear end portion of the shield shell 90. Thus, the shield connector 10 is completed.

  Subsequently, the shield shell 90 is fixed to the device side case C by directing the mounting piece 92 of the shield shell 90 to the outer wall of the device side case C and passing the mounting bolt B3 through the bolt insertion hole 93 and tightening to the device side case C. The shield is connected. Then, the device side connection portion 21 of the terminal 20 is placed on the upper surface of the terminal block T, and the device side connection portion 21 and the terminal block T can be electrically connected by passing the connection bolt B1 through the circular hole 21A and fastening to the fixing hole T1. Connect to. Thus, the shield connector 10 is fixed to the device side case C and is shield-connected.

  Now, in a state where the shield connector 10 is fixed to the device side case C, the electric wire W is pulled out to the rear of the shield connector 10, and the electric wire W is shaken in the vertical direction or pulled backward. There is a case. Here, since the electric wire W is fixed to the mold part 30 and this mold part 30 is fixed to the shield shell 90, and this shield shell 90 is fixed to the apparatus side case C, the pulling force from the electric wire W is Directly transmitted to the device-side case C. Therefore, since the load is not directly applied to the terminal block T, the terminal block T can be prevented from being damaged.

  As described above, in the present embodiment, since the electric wire W is integrally formed with the mold part 30 and receives the tensile force of the electric wire W by the mold part 30, the terminal block T is not directly loaded, and the terminal block T Can be protected. Further, since the mold part 30 is fixed to the shield shell 90 and the shield shell 90 is fixed to the apparatus side case C, the mold part 30 can be fixed to the apparatus side case C while being covered with the shield shell 90. . Further, since the rubber plug 60 and the rubber ring 40 are attached to the housing 50, the inside of the housing 50 can be waterproofed.

  Since the crimp terminal 32 is crimped to the electric wire W and the crimp terminal 32 is molded, the electric wire W can be reliably held with respect to the mold part 30. Further, since the plurality of electric wires W are formed integrally with the main body portion 31 in the collective shield structure that collectively shields the plurality of electric wires W, the main body portion 31 may not be individually molded for each electric wire W. . Furthermore, the mold part 30 can be reliably assembled to the housing 50 by fitting the fitting protrusions 34 into the fitting recesses 51.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) Although the mold part 30 is being fixed to the apparatus side case C via the shield shell 90 in the said embodiment, according to this invention, you may fix the mold part 30 directly with respect to the apparatus side case C. .
(2) Although the shield connector 10 having the housing 50 is used in the above embodiment, according to the present invention, the shield connector 10 without the housing 50 may be used. That is, when waterproofness is not required, it is not necessary to provide the rubber plug 60 or the rubber ring 40, and the shield connector 10 without the housing 50 may be used.

(3) Although the crimp terminal 32 is crimped to the exposed core wire W1 by removing a part of the coating W2 of the electric wire W in the above embodiment, the molded part 30 is formed by molding the crimp terminal 32. The electric wire W may be molded as it is without providing the crimp terminal 32.
(4) Although a plurality of electric wires W are molded together in the above embodiment, according to the present invention, each electric wire W may be individually molded, or a shield provided with a single electric wire W. The connector 10 may be used.

  (5) Although the mold part 30 is assembled to the housing 50 by fitting each fitting protrusion 34 inside each fitting recess 51 in the above embodiment, according to the present invention, a single fitting protrusion is provided. It is good also as a structure which makes a part fit inside a single fitting recessed part. That is, each fitting protrusion 34 is formed as a single fitting protrusion integrally formed without being divided by the groove 35, and each fitting recess 51 is integrally formed without being divided by the partition wall 52. One fitting recess may be used.

DESCRIPTION OF SYMBOLS 10 ... Shield connector 20 ... Terminal 30 ... Mold part 31 ... Main-body part (resin molding part)
32 ... Crimp terminal (holding member)
34 ... Fitting protrusion 40 ... Rubber ring (second seal part)
50 ... Housing 51 ... Fitting recess 60 ... Rubber plug (first seal part)
90 ... Shield shell C ... Equipment side case S ... Braided wire (shield part)
T ... Terminal block W ... Wire W1 ... Core wire W2 ... Coating

Claims (6)

A shield connector fixed to the device side case,
A terminal connected to a terminal block disposed inside the device-side case;
An electric wire connected to the terminal;
A shield part that is shield-connected to the device-side case while surrounding the electric wire;
A mold part having a resin molding part molded integrally with the electric wire,
The molded connector is separate from the terminal and fixed to the device-side case. A shield shell that is shield-connected to the shield part while surrounding the electric wire and is fixed to the device-side case,
The shield connector according to claim 1, wherein the mold part is fixed to the device-side case by being fixed to the shield shell. A housing interposed between the mold part and the shield shell;
A first seal portion for waterproofing between the electric wire drawn out from the mold portion and the housing;
The shield connector according to claim 2, further comprising a second seal portion that waterproofs between the housing and the shield shell.   4. The holding member according to claim 1, further comprising a holding member that is embedded in the resin molding portion of the mold portion and crimps a core wire exposed by removing a part of the coating of the electric wire. A shield connector according to claim 1.   A shield connector having a collective shield structure in which a plurality of the electric wires are collectively surrounded by the shield portion, wherein the plurality of electric wires are formed integrally with the resin molding portion. The shield connector according to any one of claims 1 to 4.   The said housing has a fitting recessed part opened to the said mold part side, and the said mold part has a fitting protrusion fitted to the inside of the said fitting recessed part. The shield connector according to any one of claims 5 to 5.

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