JP2020047367A - Connector for multiplex communication - Google Patents

Abstract

To provide a connector for multiplex communication enabling miniaturization, and capable of ensuring communication reliability by preventing degradation of noise removable performance due to displacement of the fixing position of ferrite due to vibration.SOLUTION: A connector for multiplex communication has multiple ferrite pieces 40 in which a pair of open holes 41 are formed, a rear cover 30 having multiple ferrite housings 32, and a pair of terminal fixing parts 33 for fixing the terminal coupling parts 52 of a pair of bus bars 50 having a terminal coupling part 52 for coupling each of a pair of tub-like terminals 51, passed through the pair of open holes 41, in the arrangement direction of the multiple ferrite housings 32, and a housing body 20 having a connector fitting part 21 provided with a fitting port in the front face, and provided with multiple elastic biasing parts 24 for elastically biasing respective ferrite pieces 40, housed in the multiple ferrite housings 32, in a housing direction of the ferrite housings 32 so as to be fixed while abutting on the internal surface 32a, on the rear face 20a.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a multiplex communication connector having a noise removing function.

2. Description of the Related Art Conventionally, a multiplex communication connector is used to connect communication lines arranged to control a plurality of electrical components mounted on a vehicle by communication.
In the connector for multiplex communication, ferrite is arranged inside a connector housing as a magnetic material for removing noise.

  For example, in Patent Literature 1, a plurality of ferrites are provided for each ferrite at positions corresponding to a plurality of connector fitting portions provided on the first housing in a second housing assembled to a rear portion of the first housing. A multiplex communication connector held by a pair of biasing arms is described.

JP 2012-69270 A

However, in the multiplex communication connector described in Patent Document 1, the pair of biasing arms biases and holds the ferrite from both sides of the ferrite. Since the biasing arm becomes larger in the direction facing the biasing arm and the pair of biasing arms is exposed, the exposed portion needs to be covered by the first housing.
In the multiplex communication connector described in Patent Document 1, the pair of biasing arms hold both side surfaces of the ferrite, but are not held in the ferrite housing direction. If there is a gap between the ferrite and the first and second housings in the direction, if the vehicle vibrates at the installation location, the vibration during traveling will cause the displacement of the fixed position of the ferrite, and a pair of biases Due to the displacement of the arm, the center of the ferrite through-hole is displaced from the center of the terminal inserted into the through-hole, so that the noise removal performance is reduced, and as a result, the communication reliability is reduced. is there.

  The present invention has been made in view of the above, and it is possible to secure communication reliability by enabling downsizing and preventing a decrease in noise removal performance due to displacement of a fixed position of a ferrite due to vibration. It is an object of the present invention to provide a multiplex communication connector that can perform the communication.

  In order to solve the above-described problems and achieve the object, a multiplex communication connector according to the present invention includes a plurality of ferrites each having a pair of through holes formed therein, and a plurality of ferrites accommodating each of the plurality of ferrites. The terminal connection of each of a pair of bus bars having a housing portion and a terminal connection portion that connects each tab-shaped terminal of the pair of tab-shaped terminals passed through the pair of through holes in a direction in which the plurality of ferrite housing portions are arranged. A rear cover having a pair of terminal fixing parts for fixing the parts, a mating part of a mating connector, a connector fitting part having a fitting opening formed on the front surface, and the rear cover is assembled to a rear part. Parts, wherein when the rear cover is assembled to a rear part, each of the ferrites accommodated in the plurality of ferrite accommodation parts is accommodated in the ferrite accommodation part. A housing body having a plurality of resilient biasing portion elastically biased so as to fix being in contact with the inner wall surface of the ferrite accommodating portion is provided on the rear surface to the direction, and having a.

  Further, in the multiplex communication connector according to the present invention, in the above invention, the plurality of ferrites form a tapered shape in which an inclined surface is formed on an outer peripheral surface so as to be tapered toward a rear end surface in a housing direction, The plurality of ferrite accommodating portions are inclined so that an entrance opening is enlarged corresponding to the inclined surface, and the plurality of ferrites are urged by the plurality of elastic urging portions to hit the inclined surface. A storage part side inclined surface is formed as the inner wall surface to be brought into contact.

In the multiplex communication connector according to the present invention, the plurality of ferrites are accommodated in the plurality of ferrite accommodating portions of the rear cover, and are provided on a rear surface of the housing main body having a fitting portion having a fitting opening formed on a front surface. The plurality of ferrites are urged by the plurality of elastic urging portions in the housing direction of the ferrite housing portion of the rear cover assembled to the rear portion of the housing body.
Further, a rear surface of the housing main body where the plurality of elastic urging portions are exposed is closed by assembling the rear cover.
The multiplex communication connector according to the present invention is configured such that the plurality of ferrites are urged in the accommodation direction by the plurality of elastic urging portions, whereby the plurality of ferrites are accommodated in the accommodation direction by the housing body and the rear cover. It can be held without gaps between them.
For this reason, the multiplex communication connector according to the present invention can secure communication reliability by enabling downsizing and preventing a reduction in noise removal performance due to displacement of the fixed position of the ferrite due to vibration.

FIG. 1 is an exploded sectional view of a multiplex communication connector and a sectional view of a mating connector according to a first embodiment of the present invention. FIG. 2 is a cross-sectional view of the multiplex communication connector and the mating connector according to the first embodiment of the present invention. FIG. 3 is a sectional view taken along line AA of the multiplex communication connector shown in FIG. FIG. 4 is a sectional view of the multiplex communication connector according to the second embodiment of the present invention.

  Hereinafter, preferred embodiments of a multiplex communication connector according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is an exploded sectional view of a multiplex communication connector 1 according to a first embodiment of the present invention and a sectional view of a mating connector. FIG. 2 is a cross-sectional view of the multiplex communication connector 1 and the mating connector 100 according to the first embodiment of the present invention. FIG. 3 is a sectional view taken along line AA of the multiplex communication connector 1 shown in FIG.
The multiplex communication connector 1 according to the first embodiment of the present invention is used, for example, for connecting communication lines arranged to control a plurality of electrical components mounted on a vehicle by communication.

  The multiplex communication connector 1 includes a connector housing 10, a plurality of ferrites 40 incorporated inside the connector housing 10, and a pair of bus bars 50.

First, the ferrite 40 will be described.
The ferrite 40 is a block-shaped magnetic body having a substantially rectangular cross section orthogonal to the housing direction, and has a pair of through holes 41 formed therein.
The ferrite 40 is formed such that a pair of through-holes 41 is inserted into a pair of tab-shaped terminals 51 of the pair of bus bars 50, which will be described later.
If the center of the through-hole 41 is aligned with the center of the tab-like terminal 51 inserted into the through-hole 41, each of the through-holes 41 has a small amount of the tab-like terminal 51 with respect to the inner wall surface of the hole. The inner diameter of the hole is set so as to be inserted with a large gap.

Next, the pair of bus bars 50 will be described.
Each busbar 50 of the pair of busbars 50 is formed by subjecting a plate-shaped conductive member to press working or the like.
Each bus bar 50 has a plurality of tab-shaped terminals 51 and a terminal connecting portion 52 that connects the plurality of tab-shaped terminals 51.

  In the pair of bus bars 50, each terminal connecting portion 52 is arranged such that each of the tab-shaped terminals 51 of the pair of tab-shaped terminals 51 protruding through the pair of through holes 41 of the ferrite 40 is arranged in a direction in which a plurality of ferrite accommodating portions 32 described later are arranged. It is configured to be fixed to a rear cover 30 described later in a connecting direction.

Next, the connector housing 10 will be described.
The connector housing 10 is made of an insulating material such as a synthetic resin, and includes a housing main body 20 serving as a main body part, and a rear cover 30 attached to a rear portion of the housing main body 20.

The housing body 20 is a part where the rear cover 30 is assembled to the rear part.
The housing main body 20 is a fitting portion with the mating connector 100, and is housed in a plurality of ferrite housing portions 32 when the connector fitting portion 21 having a fitting opening formed on the front surface and the rear cover 30 are assembled on the rear portion. A plurality of elastic urging portions 24 for elastically urging the respective ferrites 40 so as to be fixed in a state where the ferrites 40 are in contact with the inner wall surfaces 32a of the ferrite housing portions 32 in the housing direction of the ferrite housing portions 32; And the engaged portion 25 with which the engaging portion 37 of the rear cover 30 is engaged in a state where the rear cover 30 has been assembled.

The connector fitting portion 21 has a hood shape in which a fitting space 21a into which the mating connector 100 is fitted is formed, and each tab-shaped terminal 51 of the pair of bus bars 50 penetrates a bottom wall 22 forming a bottom surface of the fitting space 21a. A plurality of through holes 23 are formed.
The connector fitting portion 21 is configured such that each tab-shaped terminal 51 of the pair of bus bars 50 projects from the bottom wall 22 toward the fitting space 21a.

The plurality of elastic urging portions 24 are provided on the rear surface 20 a of the housing body 20.
The rear surface 20a of the housing body 20 is, specifically, a surface of the bottom wall 22 of the fitting space 21a on the side facing the opening of the ferrite accommodating portion 32.

Each elastic urging portion 24 is provided at a position corresponding to each ferrite 40 housed in the plurality of ferrite housing portions 32.
In the first embodiment, the elastic urging portions 24 provided corresponding to the respective ferrites 40 are arranged such that both ends in the arrangement direction of the pair of through holes 41 on the end surface of the ferrite 40 on the opening side of the ferrite accommodation portion 32 are arranged in the accommodation direction. A pair is provided so as to urge each other.
The elastic biasing portions 24 provided as a pair are in the shape of an arm bent in an R shape so that their respective tips face inward.

The elastic urging portion 24 is not limited to the arm shape, and may have another shape as long as it can elastically urge the ferrite 40 in the housing direction.
In addition, the elastic urging portions 24 are provided in pairs each corresponding to each ferrite 40, but the present invention is not limited to this, and one elastic urging portion 24 may be provided corresponding to each ferrite 40. For example, the portion between the pair of through holes 41 of the ferrite 40 may be urged by one elastic urging portion that can elastically urge in the housing direction.

  As shown in FIG. 3, the engaged portion 25 is provided to protrude from an outer surface of a rear portion of the housing body 20.

  The rear cover 30 includes an assembling fitting portion 31 to which a rear portion of the housing body 20 is fitted, a plurality of ferrite housing portions 32 in which a plurality of ferrites 40 are respectively housed, and a terminal connection of each of the pair of bus bars 50. And a pair of terminal fixing portions 33 (see FIG. 1) for fixing the portion 52.

The assembling fitting portion 31 is a portion that covers the outer surface of the rear portion of the housing main body 20 so as to fit therewith. An engaging portion 37 that engages with the engaged portion 25 of the housing main body 20 protrudes from the inner surface of the end portion. (See FIG. 3).
Note that the periphery of the engaging portion 37 is a thin portion, and the thin portion is elastically moved outward so that the engaging portion 37 easily moves beyond the engaged portion 25 to the engagement completed position. It is easy to bend.

  The ferrite accommodating portion 32 forms an accommodating space corresponding to the ferrite 40 having a substantially rectangular cross section orthogonal to the accommodating direction.

  The pair of terminal fixing portions 33 are recesses into which the respective terminal connecting portions 52 of the pair of bus bars 50 are press-fitted. The pair of terminal fixing portions 33 are formed on the inner side wall surface 32 a of the ferrite housing portion 32 in the housing direction. It is formed linearly.

Next, the procedure for assembling the multiplex communication connector 1 will be described.
First, the worker attaches the pair of bus bars 50 to the rear cover 30.
More specifically, the operator press-fits and fixes each terminal connecting portion 52 of the pair of bus bars 50 to the corresponding terminal fixing portion 33 of the rear cover 30.

Next, the worker accommodates the plurality of ferrites 40 in the plurality of ferrite accommodation portions 32 of the rear cover 30, respectively.
More specifically, the operator inserts each tab-shaped terminal 51 of the pair of busbars 50 mounted on the rear cover 30 into the pair of through holes 41 of each ferrite 40, and inserts each ferrite 40 into a corresponding ferrite. It is stored in the storage part 32.

Finally, the worker completes the assembly of the multiplex communication connector 1 by assembling the rear cover 30 to the rear part of the housing body 20.
More specifically, the engaging portion 37 of the rear cover 30 is engaged with the engaged portion 25 of the housing main body 20 while fitting the rear portion of the housing main body 20 with the fitting portion 31 for assembling the rear cover 30.
When assembling the rear cover 30 to the rear part of the housing main body 20 in this way, the plurality of elastic urging parts 24 provided on the rear surface 20a of the housing main body 20 are the inner wall surfaces of the ferrite housing parts 32 in the housing direction of the ferrites 40. Since each ferrite 40 is urged so as to be in contact with the rear wall surface 32a in the housing direction, each ferrite 40 is completely fixed in the ferrite housing portion 32.
Thereby, each ferrite 40 is completely fixed in each ferrite accommodating portion 32 in a state where the ferrites 40 are in contact with the housing body 20 and the rear cover 30 without any gap in the ferrite 40 accommodation direction.

In the multiplex communication connector 1 according to the first embodiment of the present invention, the plurality of ferrites 40 are accommodated in the plurality of ferrite accommodating portions 32 of the rear cover 30 and the connector fitting portion 21 having a fitting opening formed on the front surface. The plurality of ferrites 40 are urged by the plurality of elastic urging portions 24 provided on the rear surface 20a of the housing body 20 in the housing direction of the ferrite housing portion 32 of the rear cover 30 assembled to the rear portion of the housing body 20.
Further, the rear surface 20a of the housing body 20 from which the plurality of elastic urging portions 24 are exposed is closed by mounting the rear cover 30.
The multiplex communication connector 1 according to the first embodiment of the present invention urges the plurality of ferrites 40 in the housing direction by the plurality of elastic urging portions 24 so that the plurality of ferrites 40 are accommodated in the housing body 20 in the housing direction. And the rear cover 30 without gaps.
For this reason, the multiplex communication connector 1 according to the first embodiment of the present invention enables miniaturization and secures communication reliability by preventing a reduction in noise removal performance due to displacement of the fixed position of the ferrite due to vibration. can do.

Next, a multiplex communication connector 2 according to a second embodiment of the present invention will be described with reference to FIG.
FIG. 4 is a sectional view of the multiplex communication connector 2 according to the second embodiment of the present invention.
The multiplex communication connector 2 of the first embodiment is different from the multiplex communication connector 2 of the first embodiment in that the ferrite 60 has a tapered shape and the ferrite receiving portion 34 is formed in a shape corresponding to the tapered ferrite 60. Connector 1.
The other configuration is the same as that of the first embodiment, and the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted.

  The multiplex communication connector 2 according to the second embodiment includes a connector housing 10, a plurality of ferrites incorporated inside the connector housing 10, and a pair of bus bars 50.

First, the ferrite 60 will be described.
The ferrite 60 is a block-shaped magnetic material, has a pair of through holes 41, and has a tapered shape in which an inclined surface is formed on an outer peripheral surface so as to be tapered toward a rear end surface in a housing direction. I have.

  In the second embodiment, the ferrite 60 has a substantially rectangular cross section orthogonal to the housing direction, and is formed symmetrically on both sides in the direction in which the pair of through holes 41 are arranged (the direction indicated by the Z axis in FIG. 4). A pair of inclined surfaces (not shown) symmetrically formed on both sides in a direction (direction indicated by the Y axis in FIG. 4) orthogonal to the direction in which the pair of through holes 41 are arranged. The taper shape is formed by forming the outer peripheral surface with the above.

Next, the plurality of ferrite housing portions 34 of the rear cover 30 will be described.
The plurality of ferrite accommodating portions 34 are inclined so that the entrance openings are enlarged corresponding to the inclined surfaces (60a, 60b, etc.) of the ferrite 60, and the plurality of ferrites urge the plurality of elastic urging portions 24. Then, an inclined surface (35a, 35b, etc.) as an inner wall surface with which the inclined surface (60a, 60b, etc.) comes into contact (hereinafter, referred to as a "housing portion side inclined surface" to be distinguished from a ferrite inclined surface) is formed. And a clearance space 36 formed so that the ferrite 40 does not abut against the bottom wall of the housing space of the ferrite housing 34.

  The taper-corresponding inclined surface portion 35 is formed of a pair of inclined surfaces 60 a and 60 b of the ferrite 40 symmetrically formed on both surfaces in the direction in which the pair of through holes 41 are arranged (the direction indicated by the Z axis in FIG. 4). A pair of not-shown slants of the ferrite 40 symmetrically formed on both sides in the direction perpendicular to the direction in which the pair of through holes are arranged (the direction indicated by the Y axis in FIG. 4). And a pair of not-shown accommodation unit side inclined surfaces corresponding to the surfaces.

  The escape space portion 36 is formed in such a manner that each inclined surface (60a, 60b, etc.) of the ferrite 40 is in contact with the corresponding accommodating portion-side inclined surface (35a, 35b, etc.), and the ferrite 40 has a ferrite accommodating side end surface. This is a portion provided so as to form a gap between the portion 34 and the inner side wall surface 34a in the housing direction.

  In the state where the ferrite 40 is urged in the accommodation direction by the elastic urging portion 24, the escape space portion 36 does not abut against the inner side wall surface 34a in the accommodation direction of the ferrite accommodation portion 34, and the inclined surface (60a, 60b). ) Is fixed to the ferrite housing portion 34 by being brought into contact with the housing portion side inclined surfaces (35a, 35b, etc.) which are the inner wall surfaces of the ferrite housing portion 34.

By providing such a clearance space portion 36, a contact relationship is established between each inclined surface (60a, 60b, etc.) of the ferrite 40 and each accommodation portion-side inclined surface (35a, 35b, etc.) of the ferrite accommodation portion 34. The ferrite 40 can be positioned and fixed.
The positioning and fixing of the ferrite 40 will be described more specifically. The arrangement direction of the pair of through holes 41 of the ferrite (the direction indicated by the Z axis in FIG. 4) and the arrangement of the pair of through holes 41 of the ferrite 40. The ferrite 40 is positioned and fixed in a direction perpendicular to the direction (the direction indicated by the Y axis in FIG. 4).

  The multiplex communication connector 2 according to the second embodiment of the present invention has the same effect as the multiplex communication connector 1 according to the first embodiment of the present invention, and the plurality of ferrites 60 are formed by tapered inclined surfaces (60a, 60a). 60b) is fixed in a state where the inclined surfaces (35a, 35b, etc.) are in contact with the accommodation portion side inclined surfaces (35a, 35b, etc.), so that the centers of the through holes 41 of the plurality of ferrites 60 and the tabs inserted through the through holes 41 are provided. Since the center of the terminal 51 is aligned with the center, the tab-shaped terminal 51 contacts the through-holes 41 of the plurality of ferrites 60 and the ferrite 40 can be prevented from being worn.

  As described above, the invention made by the inventor has been specifically described based on the embodiments of the above-described invention. However, the present invention is not limited to the above-described embodiments of the invention, and does not depart from the gist of the invention. Can be variously changed.

1, 2 Multiplexing connector 10 Connector housing 20 Housing main body 20a Rear surface 21 Connector fitting portion 21a Fitting space 22 Bottom wall 23 Through hole 24 Elastic biasing portion 25 Engaged portion 30 Rear cover 31 Assembling fitting portion 32, 34 Ferrite housing part 32a, 34a Back wall surface (inner wall surface) in housing direction
33 Terminal fixing portion 35 Inclined surface portion corresponding to taper 35a, 35b Inclined portion side inclined surface (inner wall surface)
36 Relief space part 37 Engagement part 40, 60 Ferrite 41 Through hole 50 Bus bar 51 Tab-shaped terminal 52 Terminal connection part 60a, 60b Inclined surface 100 Mating connector

Claims (2)

A plurality of ferrites formed with a pair of through holes,
A plurality of ferrite accommodation portions accommodating each of the plurality of ferrites, and terminals connecting the tab-shaped terminals of the pair of tab-shaped terminals passed through the pair of through holes in the direction in which the plurality of ferrite accommodation portions are arranged. A rear cover having a pair of terminal fixing portions for fixing the terminal connecting portions of the pair of bus bars having a connecting portion,
It is a fitting portion with a mating connector, has a connector fitting portion with a fitting opening formed on the front surface, and is a portion where the rear cover is assembled to a rear portion. A plurality of elastic urging members for elastically urging the respective ferrites accommodated in the ferrite accommodating portion so as to be fixed in a state of contacting the inner wall surface of the ferrite accommodating portion in the accommodating direction of the ferrite accommodating portion. A housing body provided with a part on the rear surface,
A connector for multiplex communication, comprising: The plurality of ferrites,
The outer peripheral surface has a tapered shape in which an inclined surface is formed so as to taper toward the rear end surface in the housing direction,
The plurality of ferrite housings,
Housing as the inner wall surface, which is inclined so that the entrance opening is enlarged corresponding to the inclined surface, and in which the plurality of ferrites are urged by the plurality of elastic urging portions to contact the inclined surface. The multiplex communication connector according to claim 1, wherein a section-side inclined surface is formed.

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