JP7267876B2 - joint connector - Google Patents

Description

The present invention relates to joint connectors.

A joint connector having a noise elimination function, comprising a first housing, a second housing, a conductive member (joint terminal) in which a plurality of terminals are integrally formed by connecting portions, and a plurality of ferrites. There is (for example, see Patent Document 1).

In this joint connector, the conductive member is held by the second housing, and the ferrite is held at its four corners by biasing arms of the second housing. When the first housing and the second housing are fitted together, the lock receiving portion of the first housing engages the lock formed by the protrusion of the second housing.

JP 2012-69270 A

By the way, in the joint connector described above, the lock receiving portion for engaging the lock and assembling the first housing and the second housing is provided on the cantilever-like arm of the first housing. The structure is such that the lock is engaged by the deflection of the That is, since the lock receiving portion has a structure in which the lock is engaged by riding over the lock, there is a clearance between the lock and the lock receiving portion in the locked state. As a result, the first housing and the second housing rattle relative to each other in the front-rear direction by the amount of the clearance.

As a result, for example, when the joint connector is mounted on a vehicle, the first housing and the second housing move relative to each other due to the application of vibrations such as when the vehicle is running, and the ferrite is vibrated and stressed. is added, and there is a concern that the noise removal performance will be degraded.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a joint connector capable of holding ferrite without rattling and ensuring a good noise removing function.

The above objects of the present invention are achieved by the following configurations.
(1) A joint connector comprising a housing having a fitting recess into which a mating housing is fitted, and a front holder assembly assembled in the fitting recess,
The front holder assembly includes
a front holder;
a ferrite held by the front holder;
a joint terminal fixed to the front holder with a terminal portion inserted through a through hole formed in the ferrite;
An annular packing is fixed to the fitting recess for sealing a fitting portion with the mating housing,
A joint connector, wherein the front holder assembly is assembled in the fitting recess so that the front holder is fitted into the packing.

According to the joint connector having the configuration (1) above, when the front holder assembly is assembled in the fitting recess, the front holder is fitted into the annular packing that seals the fitting portion with the mating housing. As a result, the front holder assembly including the front holder, the ferrite and the joint terminal can be attached to the housing while suppressing looseness. Therefore, even if the joint connector is mounted on a vehicle, application of stress to the ferrite due to vibration or the like during running of the vehicle can be suppressed, and good noise elimination performance of the ferrite can be maintained.

(2) The joint connector according to (1) above, wherein the packing has a lip that is in close contact with the outer peripheral surface of the front holder in the circumferential direction.

According to the joint connector having the configuration (2) above, when the front holder assembly is assembled into the fitting recess of the housing, the front holder is fitted into the packing. Then, the lip formed on the packing is in close contact with the outer peripheral surface of the front holder in the circumferential direction. As a result, the front holder assembly can be attached to the housing without looseness.

(3) the housing has a mounting recess into which a part of the front holder is fitted;
A locking recess is formed on the inner surface of the mounting recess,
The joint connector according to (1) or (2) above, wherein the front holder is formed with a locking portion that engages with the locking recess.

According to the joint connector having the configuration (3) above, when the front holder assembly is assembled in the fitting recess of the housing, a part of the front holder is fitted into the fitting recess of the housing, and the front holder is locked. portion engages a locking recess in the inner surface of the mounting recess. As a result, the assembled state of the front holder assembly with respect to the housing can be maintained.

ADVANTAGE OF THE INVENTION According to this invention, the joint connector which can hold|maintain a ferrite without rattling and can ensure a favorable noise removal function can be provided.

The present invention has been briefly described above. Furthermore, the details of the present invention will be further clarified by reading the following detailed description of the invention (hereinafter referred to as "embodiment") with reference to the accompanying drawings. .

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a joint connector according to an embodiment of the present invention, where (a) is a perspective view of a state in which it is connected to a mating connector, and (b) is a perspective view of a state in which it is detached from the mating connector; FIG. 2 is a cross-sectional view taken along line AA in FIG. 1(a); 3 is a perspective view of the housing, packing and front holder assembly; FIG. 2 is a cross-sectional view taken along line BB in FIG. 1(b); FIG. FIG. 4 is an exploded perspective view of the front holder assembly; FIG. 4 is a rear view and a partly enlarged view of the front holder assembly; FIG. 7 is a cross-sectional view taken along line CC in FIG. 6; FIG. 4 is a schematic diagram showing a state in which a terminal portion of a joint terminal is inserted into a through-hole of ferrite; It is a perspective view of packing. FIG. 4 is a front view of the housing with the packing assembled; FIG. 11 is a cross-sectional view taken along line DD in FIG. 10 and a partially enlarged view;

Hereinafter, examples of embodiments according to the present invention will be described with reference to the drawings.
1A and 1B are diagrams showing a joint connector 10 according to an embodiment of the present invention, FIG. FIG. 3 is a perspective view of a state in which the connector is detached from the connector 100; FIG. 2 is a sectional view taken along the line AA in FIG. 1(a).

As shown in FIGS. 1(a), 1(b) and 2, the joint connector 10 according to this embodiment has a housing 11 into which a mating housing 101 of a mating connector 100 is fitted. ing. The joint connector 10 is connected to the mating connector 100 to form a joint circuit of wire harnesses routed to the vehicle.

The mating connector 100 has a mating housing 101 made of electrically insulating synthetic resin. The mating housing 101 includes a fitting portion 102 in which a plurality (up to eight) of female terminals (not shown) are accommodated, and a rear end connected to the fitting portion 102 so as to extend from the outer peripheral side of the fitting portion 102 . and a hood portion 103 for covering. A mating housing 101 has an electric wire 104 (only one electric wire 104 is shown in FIG. 1) connected to a female terminal, which is pulled out from the rear surface. A lock arm 105 is formed on the upper portion of the hood portion 103 that constitutes the mating housing 101 .

A housing 11 of the joint connector 10 is molded from an electrically insulating synthetic resin and has a fitting recess 12 that is open on the front side. The fitting recess 12 of the housing 11 is fitted with the fitting portion 102 of the mating housing 101 . Further, by fitting the fitting portion 102 into the fitting recess 12 , the outer periphery of the housing 11 is covered with the receptacle 103 of the mating housing 101 .

A lock claw 13 is formed on the upper portion of the housing 11 . The lock claw 13 is locked by the lock arm 105 of the mating housing 101 when the mating housing 101 is fitted to the housing 11 . As a result, the joint connector 10 and the mating connector 100 are locked in a mutually connected state.

3 is a perspective view of the housing 11, packing 71 and front holder assembly 21. FIG. FIG. 4 is a cross-sectional view taken along the line BB in FIG. 1(b).
As shown in FIGS. 3 and 4, the joint connector 10 has a housing 11, a packing 71, and a front holder assembly 21. As shown in FIGS. The packing 71 and the front holder assembly 21 are assembled to the housing 11 by being sequentially fitted into the fitting recesses 12 .

FIG. 5 is an exploded perspective view of the front holder assembly 21. FIG. FIG. 6 is a rear view and a partially enlarged view of the front holder assembly 21. FIG. 7 is a cross-sectional view taken along line CC in FIG. 6. FIG. FIG. 8 is a schematic diagram showing how the terminal portion 51 of the joint terminal 24 is inserted into the through hole 45 of the ferrite 23. As shown in FIG.

As shown in FIGS. 5 to 7, the front holder assembly 21 has a front holder 22, a plurality of (four in this example) ferrites 23, and a pair of joint terminals . The front holder assembly 21 is a so-called assembly configured by assembling the ferrite 23 and the joint terminal 24 to the front holder 22 .

The front holder 22 is molded from an electrically insulating synthetic resin, and has a plurality of (four in this example) ferrite housing portions 30 for housing the ferrites 23 at its rear portion.

The front holder 22 has a substantially rectangular front wall 31 when viewed from the front, and both left and right sides of the front wall 31 are curved so as to bulge slightly outward. The front wall 31 is formed with a plurality of press-fit holes 32 penetrating from the front and back. A pair of side walls 33 and three partition walls 34 are integrally formed on the rear surface side of the front wall 31 . Side walls 33 are formed on both left and right sides of the front wall 31 , and partition walls 34 are formed between the side walls 33 at intervals.

The front holder 22 has a ferrite accommodating portion 30 between the side wall 33 and the partition wall 34 adjacent to each other and between the partition walls 34 adjacent to each other. The side wall 33 and the partition wall 34 have holding projections 33a and 34a slightly protruding toward the ferrite housing portion 30 near the upper and lower positions thereof. A pair of slits 35 are formed in the partition wall 34 with an interval therebetween. On the inner surface forming the slit 35, clamping protrusions 35a are formed at positions facing each other and protrude in the direction of approaching each other (see the enlarged view in FIG. 6).

The front holder 22 is formed with urging arms 37 above and below the ferrite housing portion 30 . Biasing arms 37 formed in the ferrite housing portions 30 at both left and right ends of the front holder 22 are connected to the side walls 33 and the partition walls 34 at both rear end side portions thereof, and gradually move toward the ferrite housing portion 30 toward the front wall 31 . overhanging. Biasing arms 37 formed in the two central ferrite housing portions 30 of the front holder 22 are connected to the partition wall 34 at both rear end side portions thereof, and gradually move toward the ferrite housing portion 30 toward the front wall 31 . overhanging. Further, the front holder 22 has locking portions 41 formed on both left and right side surfaces thereof.

The plurality of ferrites 23 are made of a magnetic material and formed in a rectangular shape when viewed from the front. The ferrite 23 is formed with two through holes 45 having a circular cross-section penetrating from the front and back and spaced from each other in the longitudinal direction.

The joint terminal 24 has a plurality of (four in this example) terminal portions 51 and connecting portions 52 . The joint terminal 24 is made of a conductive metal plate made of, for example, copper, copper alloy, aluminum, aluminum alloy, etc., and is formed by press working or the like. A plurality of terminal portions 51 of the joint terminal 24 are formed in a bar shape having a rectangular cross section, and are integrally formed with a connecting portion 52 formed in a strip shape. These terminal portions 51 extend in the same direction from the connecting portion 52 and are arranged in parallel with a space therebetween.

The ferrite 23 is mounted and accommodated in the ferrite accommodating portion 30 from the rear side of the front holder 22 . The holding projections 33a and 34a of the side wall 33 and the partition wall 34 abut on both side surfaces of the ferrite 23 accommodated in the ferrite accommodating portions 30 on both sides. Further, the ferrite 23 accommodated in the central ferrite accommodation portion 30 is abutted on both side surfaces thereof by the holding protrusions 34a of the partition wall 34 . In addition, the ferrite 23 mounted in each ferrite accommodating portion 30 is vertically sandwiched by biasing arms 37 provided at upper and lower positions of the ferrite accommodating portion 30 . As a result, the ferrite 23 accommodated in each ferrite accommodating portion 30 is held by the front holder 22 without rattling in the vertical and horizontal directions.

Each terminal portion 51 of the joint terminal 24 is inserted into the through hole 45 of the ferrite 23 attached to the front holder 22 and then press-fitted into the press-fitting hole 32 of the front wall 31 . As a result, the connection portion 52 of the joint terminal 24 is inserted into the slit 35 of the partition wall 34, and the clamping protrusion 35a is pressed against the surface of the connection portion 52 (see FIG. 6). Accordingly, the joint terminal 24 is fixed to the front holder 22 without rattling by press-fitting the terminal portion 51 into the press-fitting hole 32 and inserting the connecting portion 52 into the slit 35 . Then, as shown in FIG. 8 , the terminal portion 51 is arranged so as to pass through the center position of the through hole 45 of the ferrite 23 .

By assembling the ferrite 23 and the joint terminal 24 to the front holder 22 in this manner, the front holder assembly 21 is formed. In this front holder assembly 21 , the ferrite 23 is sandwiched between the rear surface of the front wall 31 of the front holder 22 and the front edge surface of the connecting portion 52 of the joint terminal 24 . As a result, the ferrite 23 is held by the front holder 22 without rattling in the front-rear direction. In addition, the joint terminal 24, whose front edge surface of the connecting portion 52 abuts the rear surface of the ferrite 23, is arranged in front of the front holder 22 so that the projection dimension from the front wall 31 of the front holder 22 is a preset dimension. A distance between the rear surface of the wall 31 and the front edge surface of the connecting portion 52 is set. Therefore, the distance between the rear surface of the front wall 31 of the front holder 22 and the front edge surface of the connecting portion 52 is substantially the same as the thickness T of the ferrite 23 .

By assembling the ferrite 23 and the joint terminal 24 to the front holder 22, the ferrite 23 and the joint terminal 24 are held by the front holder 22 without looseness. The center axes of the through hole 45 of the ferrite 23 and the terminal portion 51 of the joint terminal 24 are aligned.

9 is a perspective view of the packing 71. FIG.
As shown in FIG. 9, the packing 71 includes a packing main body portion 72 formed in a substantially rectangular annular shape, and a plurality of (in this example, four) mounting portions 73 formed at the rear portion of the packing main body portion 72. have. The packing 71 is integrally molded from an elastic material such as elastomer or rubber. The packing main body portion 72 is formed in an arcuate shape with both side portions slightly bulging outward. The packing main body 72 has two rows of lips 74 formed on its inner peripheral surface at intervals in the circumferential direction.

The mounting portion 73 has a base portion 75 projecting rearward from the packing body portion 72 and a locking projection 76 projecting from an end surface of the base portion 75 . The locking projection 76 has a constricted portion 77 having a small diameter formed at its root portion.

FIG. 10 is a front view of the housing 11 with the packing 71 assembled. FIG. 11 is a cross-sectional view taken along line DD in FIG. 10 and a partially enlarged view.
As shown in FIG. 10 , the housing 11 to which the packing 71 and the front holder assembly 21 are assembled has a mounting recess 61 formed at the bottom of the fitting recess 12 . A portion of the front holder 22 on the rear side of the front wall 31 is fitted into the mounting recess 61 . Two housing grooves 65 having a width slightly wider than the thickness of the connecting portion 52 of the joint terminal 24 are formed in the bottom surface of the mounting recess 61 . These accommodation grooves 65 accommodate the connecting portions 52 projecting from the rear of the front holder 22 of the joint terminal 24 constituting the front holder assembly 21 (see FIGS. 2 and 4).

As shown in FIG. 11, locking recesses 66 are formed on the inner surfaces on both the left and right sides of the mounting recess 61 . Packing fixing holes 68 are formed above and below the mounting recess 61 at the bottom of the fitting recess 12 . These packing fixing holes 68 are formed at positions corresponding to locking projections 76 formed on the mounting portion 73 of the packing 71 assembled to the fitting recess 12 . The packing fixing hole 68 has an inner diameter smaller than that of the locking projection 76 and larger than that of the constricted portion 77 .

Next, the case of assembling the packing 71 and the front holder assembly 21 to the housing 11 will be described.
The packing 71 is fitted into the fitting recess 12 of the housing 11 with the rear side where the mounting portion 73 is formed facing the housing 11 . Then, the locking protrusion 76 of the mounting portion 73 is inserted into the packing fixing hole 68 , and the inner edge of the packing fixing hole 68 enters the constricted portion 77 formed in the locking protrusion 76 . As a result, the packing 71 is fitted in the fitting recess 12 of the housing 11 (see FIG. 11).

Next, the front holder assembly 21 is fitted into the mounting recess 61 of the housing 11 with its rear side facing the housing 11 to which the packing 71 is mounted. Then, the rear side of the front wall 31 of the front holder 22 to which the ferrite 23 and the joint terminal 24 are assembled in the front holder assembly 21 is accommodated in the mounting recess 61 of the housing 11 . In this state of being housed in the mounting recess 61 , the locking portions 41 formed on both side surfaces of the front holder 22 engage with locking recesses 66 formed on both inner surfaces of the mounting recess 61 . As a result, the front holder assembly 21 is attached to the housing 11 (see FIG. 4).

In this state, the front holder assembly 21 is such that the front wall 31 of the front holder 22 is fitted into the packing main body portion 72 of the packing 71, and the lip 74 formed on the inner peripheral surface of the packing main body portion 72 is attached to the front holder 22. It adheres to the outer peripheral surface of the front wall 31 . As a result, the front holder assembly 21 is attached to the housing 11 without looseness.

A mating connector 100 is connected to the joint connector 10 in which the front holder assembly 21 is attached to the housing 11 . Then, the fitting portion 102 of the mating housing 101 of the mating connector 100 is fitted into the fitting recess 12 of the housing 11 (see FIGS. 1A and 2). As a result, the female terminal accommodated in the mating housing 101 and the terminal portion 51 of the joint terminal 24 of the joint connector 10 are electrically connected to form a joint circuit of the wire harness routed to the vehicle.

Also, the fitting recess 12 of the housing 11 is fitted with the fitting portion 102 of the mating housing 101 . Then, the outer circumference of the housing 11 is covered with the hood portion 103 of the mating housing 101 and the lock claws 13 of the housing 11 are locked by the lock arms 105 of the mating housing 101 . As a result, the joint connector 10 and the mating connector 100 are locked in a mutually connected state.

In this connected state, the front end portion of the fitting portion 102 is fitted into the packing body portion 72 of the packing 71 , and the lip 74 formed on the inner peripheral surface of the packing body portion 72 is in close contact with the outer peripheral surface of the fitting portion 102 . do. As a result, the connecting portion between the terminal portion 51 of the joint terminal 24 of the joint connector 10 and the female terminal of the mating connector 100 is sealed.

As described above, according to the joint connector 10 according to this embodiment, the front holder assembly 21 is assembled in the fitting recess 12 . Then, the front holder 22 is fitted into the ring-shaped packing 71 that seals the fitting location with the mating housing 101 . As a result, the front holder assembly 21 composed of the front holder 22, the ferrite 23, and the joint terminal 24 is attached to the housing 11 while suppressing looseness. Therefore, even if the joint connector 10 is mounted on a vehicle, application of stress to the ferrite 23 due to vibration or the like during running of the vehicle can be suppressed, and good noise removal performance of the ferrite 23 can be maintained.

Further, according to the joint connector 10 of this embodiment, when the front holder assembly 21 is assembled into the fitting recess 12 of the housing 11 , the front holder 22 is fitted into the packing 71 . Then, the lip 74 formed on the packing 71 is in close contact with the outer peripheral surface of the front wall 31 of the front holder 22 in the circumferential direction. As a result, the front holder assembly 21 is attached to the housing 11 without looseness.

Further, according to the joint connector 10 of this embodiment, the front holder assembly 21 is assembled in the fitting recess 12 of the housing 11 . Then, the rear side of the front wall 31 of the front holder 22 is fitted into the mounting recess 61 of the housing 11 , and the locking portion 41 of the front holder 22 engages the locking recess 66 on the inner surface of the mounting recess 61 . As a result, the assembled state of the front holder assembly 21 with respect to the housing 11 can be maintained.

It should be noted that the present invention is not limited to the above-described embodiments, and can be modified, improved, etc. as appropriate. In addition, the material, shape, size, number, location, etc. of each component in the above-described embodiment are arbitrary and not limited as long as the present invention can be achieved.

Here, the features of the embodiments of the joint connector according to the present invention described above are summarized and listed briefly in [1] to [3] below.
[1] A housing (11) having a fitting recess (12) into which a mating housing (101) is fitted, and a front holder assembly (21) assembled in the fitting recess (12). A joint connector comprising
The front holder assembly (21) is
a front holder (22);
a ferrite (23) held by the front holder (22);
a joint terminal (24) fixed to the front holder (22) with a terminal portion (51) inserted through a through hole (45) formed in the ferrite (23);
An annular packing (71) is fixed to the fitting recess (12) for sealing a fitting portion with the mating housing (101),
A joint connector (10) characterized in that the front holder assembly (21) is assembled in the fitting recess (12) so that the front holder (22) is fitted into the packing (71). ).
[2] The above-described [1], wherein the packing (71) is formed with a lip (74) that is in close contact with the outer peripheral surface of the front holder (22) in the circumferential direction. Joint connector (10).
[3] The housing (11) has a mounting recess (61) into which a part of the front holder (22) is fitted,
A locking recess (66) is formed on the inner surface of the mounting recess (61),
The joint connector according to [1] or [2] above, wherein the front holder (22) is formed with a locking portion (41) that engages with the locking recess (66). (10).

DESCRIPTION OF SYMBOLS 10... Joint connector 11... Housing 12... Fitting recess 21... Front holder assembly 22... Front holder 23... Ferrite 24... Joint terminal 41... Locking part 45... Through hole 51... Terminal part 61... Mounting recess 66... Locking Recess 71 Packing 74 Lip 101 Mating housing

Claims (3)

A joint connector comprising: a housing having a fitting recess into which a mating housing is fitted; and a front holder assembly assembled in the fitting recess,
The front holder assembly includes
a front holder;
a ferrite held by the front holder;
a joint terminal fixed to the front holder with a terminal portion inserted through a through hole formed in the ferrite;
An annular packing is fixed to the fitting recess for sealing a fitting portion with the mating housing,
The front holder assembly is assembled in the fitting recess so that the front holder is fitted into the packing.
A joint connector characterized by: The packing is provided with a lip that is in close contact with the outer peripheral surface of the front holder in the circumferential direction.
The joint connector according to claim 1, characterized in that: the housing has a mounting recess into which a part of the front holder is fitted;
A locking recess is formed on the inner surface of the mounting recess,
The front holder is formed with a locking portion that engages with the locking recess,
3. The joint connector according to claim 1 or 2, characterized in that:

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