Classifications

• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
  • H01R13/7195—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with planar filters with openings for contacts
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/719—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters
  • H01R13/7193—Structural association with built-in electrical component specially adapted for high frequency, e.g. with filters with ferrite filters
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/6608—Structural association with built-in electrical component with built-in single component
  • H01R13/6616—Structural association with built-in electrical component with built-in single component with resistor
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
  • H01R13/66—Structural association with built-in electrical component
  • H01R13/665—Structural association with built-in electrical component with built-in electronic circuit
  • H01R13/6658—Structural association with built-in electrical component with built-in electronic circuit on printed circuit board
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R2201/00—Connectors or connections adapted for particular applications
  • H01R2201/26—Connectors or connections adapted for particular applications for vehicles
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
  • H01R31/00—Coupling parts supported only by co-operation with counterpart
  • H01R31/08—Short-circuiting members for bridging contacts in a counterpart
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
  • H04L12/00—Data switching networks
  • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
  • H04L12/40—Bus networks
  • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
  • H04L2012/40215—Controller Area Network CAN

Definitions

• the present disclosure provides a connector that electrically connects electric wires connected to a control unit mounted on a vehicle or the like and includes a ferrite for noise removal.
• Patent Document 1 described below discloses a connector used in a control area network (CAN) for connecting a plurality of electrical components mounted on a vehicle or the like.
• this connector is provided with a ferrite at a terminal.
• a plurality of through holes are formed in the ferrite, and a plurality of terminals are inserted into the respective through holes.
• the ferrite can reduce high-frequency noise.
• Patent Document 1 Japanese Patent Number 5489352
• An example of a connector proposed in the present disclosure includes a terminal having a fixing portion and an attaching portion, a housing that houses the terminal and has a terminal holding portion holding the fixing portion, a ferrite that is housed in the housing, disposed on a first side in a first direction with respect to the terminal holding portion, and attached to the attaching portion, and a ferrite cover that is housed in the housing and located on the first side with respect to the ferrite.
• the housing has an engaged portion protruding inward on an inner face thereof.
• the ferrite cover includes a plate portion located on the first side with respect to the ferrite, and an engaging portion that is disposed along the inner face of the housing and restricted by the engaged portion from moving toward the first side.
• the ferrite cover is elastically deformable such that the position of the engaging portion changes toward inside of the housing. When vibrating, this connector can suppress wear of the ferrite caused by contact between the ferrite and components surrounding the ferrite.
• FIG. 1 A is an exploded perspective view of an example (first example) of a connector proposed in the present disclosure and a mating connector.
• FIG. IB is a perspective view illustrating an example of a ferrite cover included in the connector in the first example.
• FIG. 2A is a perspective view of the connector in the first example with a cover member removed when viewed from a fitting recess.
• FIG. 2B is a perspective view of the connector in the first example when viewed from the opposite side to FIG. 2A.
• FIG. 2C is an exploded view of the connector illustrated in FIG. 2B.
• FIG. 3A is a front view of the connector in the first example fitted with the mating connector when viewed from the cover member.
• FIG. 3B is a cross-sectional view taken along a line Illa-IIIa in FIG. 3A.
• FIG. 3C is a cross-sectional view taken along a line Illb-IIIb in FIG. 3A.
• FIG. 4A is a front view of the connector in the first example before engagement of the cover member when viewed from the cover member.
• FIG. 4B is a cross-sectional view taken along a line IVb-IVb in FIG. 4A.
• FIG. 5 is a rear view of the connector in the first example with the ferrite cover and terminals removed when viewed from the fitting recess.
• FIG. 6 is a perspective view of the connector in the first example when viewed from diagonally below.
• FIG. 7A is a plan view of a terminal included in the connector in the first example.
• FIG. 7B is a cross-sectional view taken along a line Vllb-VIIb in FIG. 7A.
• FIG. 8 is a cross-sectional view of a second example of the connector proposed in the present disclosure.
• FIG. 9A is a perspective view of a ferrite cover of another example (third example) of the connector proposed in the present disclosure.
• FIG. 9B is a cross-sectional view of the connector having the ferrite cover illustrated in FIG. 9A.
• the cross section is the same as that in FIG. 4B.
• FIG. 9C is a cross-sectional view of the connector having the ferrite cover illustrated in FIG. 9A.
• the cross section is the same as that in FIG. 3C.
• FIG. 10A is a perspective view of a ferrite cover included in yet another example (fourth example) of the connector proposed in the present disclosure.
• FIG. 10B is a perspective view illustrating a rear side of the ferrite cover illustrated in FIG. 10 A.
• FIG. IOC is a cross-sectional view of the connector having the ferrite cover illustrated in FIG. 10A.
• the cross section is the same as that in FIG. 3C.
• FIG. 11 A is a perspective view of a ferrite cover included in yet another example (fifth example) of the connector proposed in the present disclosure.
• FIG. 1 IB is a cross-sectional view of the connector having the ferrite cover illustrated in FIG. 11 A.
• the cross section is the same as that in FIG. 3C.
• a connector 10A illustrated in FIG. 1A and other figures is a joint connector equipped with a terminating resistance circuit, which is used to control a plurality of control units mounted on a vehicle or the like according to a communication scheme referred to as control area network (CAN) communication.
• the connector 10 A is connected to a termination side of the plurality of control units.
• the connector 10A includes a housing 20, ferrites 2 for noise removal, a terminating resistance circuit 40, and a plurality of terminals 50 for electrically connecting the terminating resistance circuit 40 to a mating connector 80.
• the ferrites 2 are made of an electrically conductive or non-electrically conductive material, and are used to increase the reliability of signals, for example, by reducing noise emission and superposition on signal terminals.
• the ferrite is generally believed to be mechanically fragile.
• the surface of the ferrite may be scraped off.
• powders of the ferrite may adhere to the connector, effecting the mechanical connection with the mating connector, or contaminating the inside of the connector.
• the powders of electrically conductive ferrite are generated, the powders can adhere to places between terminals and effect the electrical performance of the connector or the electrical properties of the terminating resistance circuit.
• a circuit board 41 that constitutes the terminating resistance circuit 40 may be any board having a flat plate-like electric circuit, such as a printed circuit board, a flexible printed circuit, and a flexible flat cable, which are used in electronic components and electronic devices.
• an XI direction illustrated in FIG. 1 A is referred to as forward, and an X2 direction illustrated in the figure is referred to as rearward.
• a Y1 direction is referred to as leftward, and a Y2 direction is referred to as rightward.
• a Z1 direction is referred to as upward, and a Z2 direction is referred to as downward.
• Expressions for indicating directions such as up, down, left, right, front, and rear, used to describe operations and configurations of portions of the connector 10A and so on in the present disclosure are not absolute but are relative positions and movements, and though appropriate when the connector 10A and so on are oriented as illustrated in the figures, the above expressions should be interpreted differently when the orientation of the connector 10A and so on changes.
• the mating connector 80 to be connected to the connector 10A includes a mating housing 81, electric wires 91, and mating terminals 92 electrically connected to tips of the respective electric wires 91.
• the mating housing 81 includes insertion ports 81a (see FIG. 3A) through which the mating terminals 92 are inserted, and retainers 81b (see FIG. 3A) for fixing the inserted mating terminals 92.
• a rear portion 92a (a portion located rearward (in the X2 direction), that is, a portion on the side of the electric wire 91) of the mating terminal 92 is electrically connected to an exposed conductive portion of the electric wire 91 with covering removed.
• a front portion 92b (a portion located forward (in the XI direction), that is, a portion on the side of the connector 10A opposite to the electric wire 91) of the mating terminal 92 has a substantially rectangular and hollow shape, and the terminal 50 of the connector 10A as described below is inserted into the front portion 92b of the mating terminal 92 such that the mating terminal 92 and the terminal 50 are electrically connected to each other.
• the connector 10A is generally referred to as a joint connector equipped with a terminating resistance circuit, and includes the housing 20, the terminals 50 supported on the housing 20, the ferrites 2 attached to the terminals 50 on one rear side, and the terminating resistance circuit 40 connected to the terminals 50 on the other front side.
• the connector 10A includes the plurality of ferrites 2 (three ferrites 2 in the connector 10 A) arranged in the transverse direction. The two terminals 50 are attached to one ferrite 2.
• the housing 20 is made of an insulating material, is shaped as a substantially rectangular parallelepiped, and includes a fitting recess 20a (see FIG. 2A) into which the mating connector 80 is fitted, a mounting recess 20b (see FIG. 2B) in which the terminating resistance circuit 40 is mounted, and a relay portion 21 (see FIGS. 3B and 3 C) located between the fitting recess 20a and the mounting recess 20b.
• a cantilevered locking portion for attaching the connector to the housing or the like may be provided on an outer side face of the housing 20
• the fitting recess 20a is shaped as a rectangle having a space therein, and is opened rearward. Further, an inner side face of the fitting recess has protruding portions 20c that extend in the fitting direction (XI direction) for inserting the mating connector 80 in a proper position, and a locked portion 20d (see FIG. 6) that engages with a cantilevered and convex locking portion of the mating connector 80.
• the mounting recess 20b is shaped as a rectangle having a space therein, and is opened forward. Further, an inner side face of the mounting recess 20b has stepped portions 21a (stopper portions, see FIG. 3C) on which the terminating resistance circuit 40 abuts. The stepped portions 21a are separated forward from the relay portion 21. The stepped portions 21a define the position of the terminating resistance circuit 40 in the front-rear direction. The position corresponds to the center of elastic portions 52a of a below-mentioned board connecting portions 52 of the terminals 50 (see FIG. 7A), which ensures stable electrical connection between the terminals 50 and the terminating resistance circuit 40.
• the stepped portions 21a ensure a space S between the relay portion 21 and the terminating resistance circuit 40. Even in the case where powders of the ferrite 2 are generated, the space S can effectively suppress the powders from reaching the terminating resistance circuit 40.
• the stepped portions 21a may be provided with a notch or a convex direction indicator for guiding the mounting direction of the terminating resistance circuit 40 (the relative orientation of the terminating resistance circuit 40 with respect to the housing 20).
• the connector 10A may include a cover member 3 for covering the opening of the mounting recess 20b.
• the inner side face of the mounting recess 20b may have concave or convex engaged portions 20e for engaging with convex or concave engaging portions 3a formed on a pair of side faces of the cover member 3.
• the cover member 3 is configured to be fitted to the inner side of the opening of the mounting recess 20b in consideration of the miniaturization of the entire connector and so on.
• the cover member 3 may be formed so as to be fitted to the outer side of the opening of the mounting recess 20b.
• the dimension of the fitting recess 20a is larger than the opening dimension of the mounting recess 20b, however, the dimensions of the openings may be substantially the same.
• the relay portion 21 of the housing 20 is located between the fitting recess 20a and the mounting recess 20b .
• the relay portion 21 includes a terminal holding portion 21b that holds the terminals 50, and a ferrite holding portion 21c that holds the ferrites 2.
• the terminal holding portion 21b is formed integrally with the housing 20.
• the terminal holding portion 21b is formed as a wall portion (partition) that separates (partitions) the fitting recess 20a from the mounting recess 20b.
• an upper portion (Z1 direction) of the terminal holding portion 21b is connected to an upper wall portion 20g of the housing 20, and a lower portion (Z2 direction) of the terminal holding portion 21b is connected to a lower wall portion 20h of the housing 20.
• a right portion (Y2 direction) of the terminal holding portion 21b is connected to a right wall portion 20i of the housing 20, and a left portion (Y1 direction) of the terminal holding portion 21b is connected to a left wall portion 20j of the housing 20.
• small through holes 21g penetrating through right and left ends of the terminal holding portion 21b in the front-rear direction may be formed.
• the through holes 21g facilitate the formation of engaged portions 21f that protrude toward the inner side of the housing 20 (see FIG. 3C).
• engaging portions 32 of a ferrite cover 30A engage with the engaged portions 2 If, respectively.
• the ferrite holding portion 21c is formed on a face on the side of the fitting recess 20a of the terminal holding portion 21b, in other words, on the side of the mating connector 80. Accordingly, the ferrites 2 and attaching portions 53b of the terminals 50 to which the ferrites 2 are attached are located on the side of the fitting recess 20a with respect to the terminal holding portion 21b.
• the ferrite holding portion 21c is contiguous to the terminal holding portion 21b, and has recesses in rear of the terminal holding portion 21b so as to mount the ferrites 2.
• An inner face of the recess is formed along an outer circumferential face of the ferrite 2 and surrounds the ferrite 2.
• the ferrite holding portion 21c includes partition portions 21 i each formed between two adjacent ferrites 2.
• the connector 10A includes a recess on the inner side of the ferrite holding portion 21c and the ferrite cover 30A for covering the ferrites 2.
• a plurality of recesses are formed on the inner side of the ferrite holding portion 21c such that the two ferrites 2 adjacent to each other in the transverse direction are separated from each other.
• the ferrite holding portion 21c has notches 21e such that adjacent recesses communicate with each other.
• the partition portion 21i (see FIG. 3E) erected rearward from the front to partition adjacent recesses is formed on the notch 21e. With the two adjacent ferrites 2 separated from each other by the partition portion 21i, the plurality of ferrites 2 are positioned in the plurality of recesses. In the connector 10A, the ferrite 2 is disposed in three of the four recesses formed on the inner side of the ferrite holding portion 21c. In contrast, the ferrites 2 may be disposed in all of the recesses.
• the ferrite cover 30A includes a plate portion 31 that is located in rear of the ferrite holding portion 21c and covers the ferrites 2.
• the plate portion 31 includes a plurality of through holes 31a (eight through holes 31 a in the connector 10 A) through which contact portions 51 of the terminal 50 (see FIG. 7a) can be inserted.
• the ferrite cover 30A is inserted into the fitting recess 20a from the rear side of the housing 20.
• the ferrite cover 30A may have rib portions 31b protruding forward (XI direction) from the plate portion 31.
• the rib portion 31b functions as a protrusion that limits the movement of the ferrite 2 (protrusion that supports the ferrite 2).
• the rib portion 3 lb is inserted in the fitting direction (XI direction) along a side face of the partition portion 21 i while contacting the partition portion 2 li of the ferrite holding portion 21c, and is disposed along a side face (a right side face or a left side face) of the ferrite 2 to support the ferrite 2.
• the ferrite 2 is disposed between the partition portion 21i and the rib portion 31b, and is defined in the transverse direction.
• the distance between the partition portion 21i and the rib portion 31b with the ferrite 2 therebetween may be larger than the width of the ferrite 2 in the transverse direction. This can suppress wear of the surface of the ferrite 2.
• the rib portion 31b may be tapered forward (XI direction). This facilitates the insertion of the rib portion 3 lb.
• the side face of the rib portion 31b on the side of the partition portion 21i is inclined such that the rib portion 31b is tapered forward (XI direction).
• the partition portion 21i may be tapered rearward (X2 direction).
• the side face of the partition portion 21i on the side of the rib portion 31b is inclined such that the partition portion 21i is tapered rearward (X2 direction).
• the side face (inclined face) of the rib portion 31b and the side face (inclined face) of the partition portion 21 i may be in contact with each other.
• the gap between the ferrite 2 and the rib portion 31b becomes narrower.
• the movement of ferrite 2 can be suppressed while suppressing a large contact force from acting on the boundary between the surface of ferrite 2 and rib portion 3 lb and between the surface of ferrite 2 and partition portion 2 li.
• the shape and presence and/or presence of the rib portions 31b may be appropriately selected in accordance with the attachment state of the ferrite 2
• the plate portion 31 of the ferrite cover 30A has through holes 31 j that penetrate the plate portion 31 in the front-rear direction, in addition to the through holes 31a through which a contact portion 51 of the terminal 50 is inserted.
• the through holes 3 lj are formed as opposed to the partition portions 2 li, and the position of each through hole 3 lj is offset from the position of the ferrite 2 in the transverse direction.
• the through hole 3 lj may not be formed in ferrite cover 30 A.
• the ferrite cover 30A may include the engaging portions 32 that are engageable with respective engaged portions 2 If formed on the inner side of the housing 20 for the ferrite cover 30A.
• the engaged portions 2 If are protrusions that protrude toward the inside of the housing 20.
• the engaging portions 32 are formed on the edge of the ferrite cover 30A, and are disposed along the inner face of the housing 20. The engaging portions 32 are elastically deformable toward the inside of the housing 20.
• the engaging portions 32 interfere with the engaged portions 2 If and elastically deform toward the inside of the housing 20.
• the engaging portion 32 reaches the front side of the engaged portions 2 If beyond the engaged portion 2 If (that is, when the engaging portion 32 engages with the respective engaged portion 2 If)
• the rearward movement of the ferrite cover 30A is restricted by the engaged portions 21f.
• the engaged portions 2 If are formed on right and left sides of the inner face of the housing 20.
• the engaging portions 32 are formed at right and left ends of the ferrite cover 30A.
• the engaging portions 32 each are, for example, a generally U-shaped hook opened rearward, however, the shape of the engaging portions 32 is not limited thereto.
• the terminals 50 are members formed by punching and machining a metal plate.
• the terminals 50 each include a contact portion 51 electrically connected to the mating connector 80, a board connecting portion 52 electrically connected to the terminating resistance circuit 40, and a coupling portion 53 located at the relay portion 21 of the housing 20 between the contact portion 51 and the board connecting portion 52.
• the contact portion 51 has a pin or rod like shape, and is disposed within the fitting recess 20a of the housing 20.
• the board connecting portion 52 has a structure referred to as a press-fit type, for example. In other words, the board connecting portion 52 has an elastically modifiable O-ring shape.
• the board connecting portion 52 includes two elastic portions 52a that extend in the front-rear direction.
• the two elastic portions 52a are generally O shaped, and a center portion of the elastic portion 52a is elastically deformable.
• the board connecting portions 52 are disposed in the mounting recess 20b. Note that, unlike the example of the connector 10A, the board connecting portion 52 may have a pin or rod-like shape generally referred to as DIP, and may be inserted into a through hole 41a of the terminating resistance circuit 40 described later (see FIG. 3B) and electrically connected by soldering or the like.
• the coupling portion 53 of the terminal 50 includes a fixing portion 53a integrally held by the terminal holding portion 21b (relay portion 21) of the housing 20, and a pin or rod-like attaching portion 53b to which the ferrite 2 is attached.
• the fixing portion 53a is shaped like a flat plate, and an opening 53e is formed in the center of the flat plate.
• the fixing portions 53a are securely held on the terminal holding portion 21b by integrally molding (insert molding) of the terminals 50 and the housing 20.
• the integrally molding (insert molding) of the terminals 50 and the housing 20 is a method in a molding step of the housing 20 for supplying molten resin, which is a material for the housing 20, to a space within a mold in the state where a portion (fixing portions 53a) of the terminals 50 are disposed in the space within the mold.
• molten resin which is a material for the housing 20
• a portion of the housing is also formed inside the openings 53e formed in the fixing portions 53a by this method, as illustrated in FIG. 3B.
• the fixing portion 53a has protrusions 53d (see FIG. 7A) on right and left edges thereof.
• a portion of the housing is also formed on front and rear sides of the protrusions 53 d. This can reliably suppress the terminals 50 from escaping from the terminal holding portion 21b of the terminal 50. Further, a clearance between the surfaces of the fixing portions 53a of the terminals 50 and the resin that forms the housing 20 can be suppressed from occurring. As a result, even when powders of the ferrites 2 are generated due to wear of the surfaces of ferrites 2, it is possible to suppress the powders from passing through relay portion 21 of housing 20 and moving to the terminating resistance circuit 40.
• the thickness of the terminal holding portion 2 lb in the front- rear direction is larger than the thickness of the ferrite 2 in the front-rear direction. Further, the thickness of the terminal holding portion 21b in the front-rear direction is greater than the thickness of the terminating resistance circuit 40. This can increase the holding strength of the terminal holding portion 21b with respect to the fixing portions 53a of the terminals 50.
• the ferrite 2 is attached to the attaching portion 53b of the terminal 50, as described above.
• “attach” means that the attaching portion 53b is located on the inner side of the through hole formed in the ferrite 2. Agap may be formed between the inner face of the through hole of the ferrite 2 and the surface of the attaching portion 53b.
• the attaching portion 53b is machined into a substantially cylindrical shape as an example, as illustrated in FIG. 7B.
• the fixing portions 53a of the terminals 50 be integrally held by the terminal holding portion 21b of the housing 20, and have a pin or a rod-like shape.
• the fixing portion 53a may be formed such that the position of the contact portion 51 and the position of the board connecting portion 52 relatively change in the transverse direction and/or the vertical direction. In other words, the fixing portion 53a may have a crank shape.
• the ferrite 2 is, for example, a substantially elliptical solid.
• the ferrite 2 includes two through holes 2a through which the contact portions 51 (see FIG. 7A) and the attaching portions 53b (see FIG. 7A) of the terminals 50 is insertable and that are separated from each other in the up-down direction (Z1-Z2 direction).
• the terminating resistance circuit 40 functions to suppress the reflection of signals at the end of the CAN and reduce the effect on the signal.
• the terminating resistance circuit 40 includes a predetermined circuit pattern 41d formed on one face 41b (see FIG. 2B), a circuit board 41 having through holes 41a in which a conductor that conducts with the circuit pattern 4 Id is formed on an inner face thereof, and electronic components 42 such as a resistance chip or a capacitor chip mounted on the circuit board 41.
• One of the plurality of terminals 50 may function as a ground terminal.
• the remaining terminals 50 may be connected to the ground terminal via the electronic components 42 and the circuit pattern 41d.
• the circuit board 41 may include a notch 41c that fits into a direction indicator formed in the stepped portion 21a in the mounting recess 20b.
• the face 41b on which the circuit pattern 4 Id and the electronic components 42 are formed is a face on the opposite side to the relay portion 21 of the housing 20.
• the face on which the circuit pattern 41d and electronic components 42 are formed may be a face that faces the relay portion 21, or the circuit pattern 4 Id and electronic components 42 may be formed on both faces of the circuit board 41.
• the terminating resistance circuit 40 is separated forward from the relay portion 21 (terminal holding portion 21b) of the housing 20 to ensure the space S between the terminating resistance circuit 40 and the relay portion 21. In this way, even when powders of the ferrites 2 are generated, the space S can prevent the powders from reaching the terminating resistance circuit 40.
• the base portion (the portion near the fixing portion 53a) of the board connecting portion 52 of the terminal 50 is exposed from the through hole 41a of the terminating resistance circuit 40 and is located in the space S.
• the plurality of processed terminals 50 (seven terminals in the connector 10 A) formed by punching and machining a metal plate are attached so as to be away from each other in a space for molding the housing 20.
• the seven terminals 50 are arranged in two vertically separated rows.
• the three terminals 50 are disposed in the lower row arranged in the transverse direction (Y1-Y2 direction).
• the four terminals 50 are disposed in the upper row arranged in the transverse direction.
• the housing is molded by a molding method commonly referred to as integrally molding or insert molding.
• the fixing portions 53a of the coupling portions 53 of the terminals 50 are held by the terminal holding portion 21b of the housing 20 (see FIG.
• the fitting recess 20a, the mounting recess 20b, and the relay portion 21 that separates (partitions) the fitting recess 20a and the mounting recess 20b of the housing 20 are integrally formed.
• the fixing portions 53a of the coupling portions 53 of the terminals 50 are fixed by the above-mentioned molding method so as to escape from the terminal holding portion 21b of the relay portion 21 of the housing 20.
• the contact portions 51 of the terminals 50 are located in the fitting recess 20a
• the attaching portions 53b of the coupling portions 53 are located in the recess inside the ferrite holding portion 21c of the relay portion 21, and the board connecting portions 52 are located in the mounting recess 20b.
• the terminating resistance circuit 40 is moved from the opened side (front side) of the mounting recess 20b of the housing 20 that integrally holds the terminals 50 toward the board connecting portions 52 of the terminals 50. At this time, the terminating resistance circuit 40 is disposed such that the face 41b on which the electronic components 42 and the circuit pattern 41d are formed faces forward.
• the terminating resistance circuit 40 has the through holes 41a formed at positions corresponding to the board connecting portions 52 (more specifically, the elastic portions 52a) of the terminals 50.
• the terminating resistance circuit 40 is moved such that the elastic portions 52a (press-fit portions) of the board connecting portions 52 are pressed into the respective through holes 41a.
• the terminals 50 are electrically connected to the terminating resistance circuit 40 by an elastic force of the board connecting portions 52.
• the stepped portion 21a that can contact with the terminating resistance circuit 40 is formed on the inner circumferential face of the mounting recess 20b, when the terminating resistance circuit 40 is pressed, the terminating resistance circuit 40 and the stepped portion 21a contact with each other. Thus, excessive press-fit of the terminating resistance circuit 40 can be prevented.
• the cover member 3 is engaged with the opening of the mounting recess 20b, in order to prevent foreign matter and protect the terminating resistance circuit 40, the terminals 50, and the like.
• the opening of the mounting recess 20b is closed with the cover member 3.
• the board connecting portion 52 of the terminal 50 is not the press-fit type, but has a pin or rod-like shape referred to as the DIP type, the board connecting portions 52 may be inserted into the through holes 41a, and electrically connected to the circuit pattern 41 d by soldering or the like.
• each ferrite 2 is disposed such that the contact portions 51 of the two terminals 50 aligned in the vertical direction (Z1-Z2 direction) are insertable into the two through holes 2a of the ferrite 2.
• the attaching portion 53b of the coupling portion 53 of the terminal 50 is located on the inner side of the through hole 2a of the ferrite 2.
• the ferrite cover 30A is moved from the opened side (rear side) of the fitting recess 20a of the housing 20 toward the ferrites 2.
• the ferrite cover 30A is disposed such that the contact portions 51 of the plurality of terminals 50 aligned in the up- down direction and the transverse direction are insertable into the plurality of through holes 31a of the ferrite cover 30 A.
• the engaging portions 32 of the ferrite cover 30A engage with the engaged portions 21f of the housing 20 for the ferrite cover 30Ato complete the attachment of the ferrite cover 30A.
• the ferrites 2 are restricted from moving by the ferrite cover 30A, and thus do not escape from the recess of the ferrite holding portion 21c.
• the rib portion 31b of the ferrite cover 30A is inserted between the ferrite 2 and the partition portion 2 li, the movement of the ferrite 2 in the transverse direction is restricted.
• the opening dimension of the through hole 3 la of the ferrite cover 30A is smaller than the opening dimension of the through hole 2a of the ferrite 2, and is slightly larger than the outer diameter of the cross section of the contact portion 51 of the terminal 50.
• the through hole of the ferrite can contact with the terminal and scrape off the ferrite 2 and thus, the through hole 2a of the ferrite 2 is preferably dimensioned so as not to effect the operation of attaching the ferrite 2.
• the powders can be suppressed from leaking from the through holes 31a of the ferrite cover 30A toward the fitting recess 20a of the housing 20.
• one terminal 50 connected to the ground line ferrite 2 need not include the ferrite 2 attached thereto.
• the connector 10A includes the relay portion 21 integrally molded to the housing 20 between the side of the fitting recess 20a on which the ferrites 2 are attached and the side of the mounting recess 20b on which the terminating resistance circuit 40 is mounted.
• the fitting recess 20a, the ferrite cover 30A, the ferrites 2, the relay portion 21, and the terminating resistance circuit 40 are disposed in this order from the rear side, which is the side of the mating connector 80, toward the front side. That is, the ferrites 2 and terminating resistance circuit 40 are completely separated (partitioned) via the relay portion 21 and are not spatially coupled to each other.
• the connector 10A of the present disclosure unlike known connectors, in the process of attaching the ferrites 2 to the connector 10A or during use of the connector 10A including the ferrite 2 attached thereto, the case can be prevented in which the ferrite 2 contact with surrounding members and scraped off, and powders of the ferrites 2 are adhered to the connector 10A, degrading the mechanical connection to the mating connector 80 or contaminating the terminals 50, the mating terminals 92, the mating connector 80, and the like. Also, even when powders of the electrically conductive ferrites 2 are generated, there is no risk that the powders are adhered between the terminals 50, effecting electrical characteristics and the performance of the terminating resistance circuit 40, or causing short-circuit.
• the terminals 50 can be integrally molded into the housing 20 and at the same time, the relay portion 21, that is, the terminal holding portion 21b and the ferrite holding portion 21c can be formed, thereby simplifying the manufacturing process and achieving miniaturization and lower cost.
• FIG. 8 is a cross-sectional view illustrating of a connector 10B, which is another example of the connector proposed in the present disclosure.
• terminals 50 may be integrally molded into a housing 20B and at the same time, the ferrites 2 may also be integrally molded (insert molded) into the housing 20B.
• the ferrites 2 inserted into the respective terminals 50 may be attached to a mold, and molten resin, which is a material for the housing 20B, may be supplied to a space in the mold.
• the fixing portions 53a of the terminals 50 and the ferrites 2 are integrally molded into the relay portion 21 of the housing 20B. In this case, the ferrite cover is not required.
• a portion of the resin is also formed on the inner side of the openings 53e formed in the fixing portions 53a as illustrated in FIG. 8, and a portion of the resin is formed on the front and rear sides of the protrusions 53d (see FIG. 7A) formed on right and left edges of the fixing portions 53a.
• a portion of the resin which is the material for the housing 20, is formed on the front, rear, right, left, upper, and lower sides of the ferrites 2. That is, the ferrites 2 are disposed in a closed space. As a result, even when powders of the ferrites 2 are generated due to the wear of the surfaces of the ferrites 2, it is possible to suppress the powders from leakage into other spaces. With the structure in FIG. 8, similar to the connector 10A, the powders of the ferrites 2 do not leak out to the fitting recess 20a or the terminating resistance circuit 40.
• FIGS. 9A to 9C are views illustrating a connector IOC, which is another example of the connector proposed in the present disclosure.
• FIG. 9A is a perspective view of a front side of the ferrite cover 30C included in the connector IOC
• FIGS. 9B and 9C are cross-sectional views of the connector IOC.
• the cross section in FIG. 9B is similar to that in FIG. 4B
• the cross section in FIG. 9C is similar to that in FIG. 3C.
• the connector IOC and the ferrite cover 30C will be described focusing on differences from the connector 10A or the ferrite cover 30A. Matters that are not described about the connector IOC and the ferrite cover 30C may be the same as those of the connector lOAor the ferrite cover 30A.
• the ferrite cover 30C includes engaging portions 33. Similar to the ferrite cover 30A, the engaging portions 33 are formed on right and left edges of the ferrite cover 30C, for example.
• the ferrite cover 30C includes a plate portion 31 located rear of the ferrites 2. As described above, the plate portion 31 has a plurality of through holes 31a into which the contact portions 51 of the terminals 50 are inserted.
• a plurality of support protrusions 3 le protruding forward are formed on a front face of the plate portion 31. As illustrated in FIG. 9C, the plurality of support protrusions 31e are located corresponding to the plurality of ferrites 2, and support rear faces of the ferrites 2. As described above, the ferrites 2 each have two vertically separated through holes 2a. The support protrusion 3 le faces the center portion of the two through holes 2a.
• the ferrite cover 30C is formed closer to the engaged portions 21f of the housing 20 (see FIG. 3C) than the center of the ferrite cover 30C in the transverse direction, and has gaps G1 that allow changes in the position of the engaging portions 33.
• the gaps G1 are formed between the plate portion 31 and the engaging portions 33 (in other words, between the plurality of through holes 31a into which the terminals 50 are inserted and the engaging portions 33).
• the gaps G1 each are a long hole (opening) that passes through the ferrite cover 30C in the front-rear direction and that is elongated in the vertical direction.
• the width of the hole in the transverse direction (Y1-Y2 direction) is smaller than the length in the vertical direction (Z1-Z2 direction).
• the length of the gap G1 in the vertical direction may be larger than the width of the support protrusion 31e in the vertical direction.
• the gap G1 reaches the two vertically separated through holes 31a.
• the ferrite cover 30C includes elastic column portions 33a provided with the engaging portion 33 on rightmost and leftmost portions thereof. An upper portion and a lower portion of the elastic column portion 33a are connected to the plate portion 31.
• the ferrite cover 30C is elastically deformable such that the positions of the engaging portions 33 change toward the inside of the housing 20. More specifically, the elastic column portions 33 a can curve toward the center in the transverse direction, such that the positions of the engaging portions 33 can change toward the inside of the housing 20. Accordingly, similarly to the ferrite cover 30A, when the ferrite cover 30C is inserted into the fitting recess 20a from the rear side of the housing 20 (the opened side of the fitting recess 20a), the engaging portions 33 interfere with the engaged portions 2 If (see FIG. 9C) formed on the inner face of the housing 20, and the elastic column portions 33 a elastically deform toward the inside of the housing 20.
• the engaging portions 33 reach the front sides of the engaged portions 21f beyond the engaged portions 21f (that is, when the engaging portions 33 engage with the engaged portions 21f), the rearward movement of the ferrite cover 30C (escaping of the ferrite cover 30C) is restricted by the engaged portions 21f.
• the elastic column portions 33a are elastically rotated (inclined) such that the upper portions are displaced forward and the lower portions are displaced rearward and, conversely, are elastically rotated (inclined) such that the upper portions are displaced rearward and the lower portions are displaced forward.
• the elastic column portions 33a are elastically deformable such that the positions of the plurality of support protrusions 3 le change in the front-rear direction with respect to the engaging portions 33.
• the elastic column portions 33a are elastically deformable such that the position of the plate portion 31 changes in the front-rear direction with respect to the engaging portions 33.
• the support protrusion 3 le can abut the rear face of the ferrite 2 to push the ferrite 2 forward by the elastic force of the elastic column portion 33a.
• the engaging portions 33 abut the engaged portions 2 If of the housing 20 and are restricted from moving rearward, while the positions of the plurality of support protrusions 31e (in other words, the position of the plate portion 31) may relatively change rearward relative to the engaging portions 33. According to this configuration, the movement of the ferrites 2 in the front-rear direction can be reliably regulated by the support protrusions 31e. Note that the support protrusion 3 le does not necessarily contact the rear face of the ferrite 2.
• the gap Gl may have a labyrinth structure. Specifically, as illustrated in FIG. 9C, the gap Gl has a front opening Gf and a rear opening Gr.
• the front opening Gf and the rear opening Gr may be offset from each other in a direction orthogonal to the front-rear direction (in the example of the ferrite cover 30C, the transverse direction). According to this configuration, even when powders of the ferrites 2 are generated, it is possible to suppress the powders from moving to the fitting recess 20a through the gaps Gl .
• the plate portion 31 has a labyrinth wall portion 3 Id positioned behind the opening Gf.
• the elastic column portion 33a has a labyrinth wall portion 33b located in front of the opening Gr.
• the configuration that allows the change in the positions of the plate portion 31 and the engaging portions 33 is not limited to the example illustrated in FIGS. 9A and 9C.
• both the upper portions and the lower portions of the elastic column portions 33a are connected to the plate portion 31.
• the gaps G1 are formed between the upper portions and the lower portions.
• the upper ends or lower ends of gaps G1 may reach the edge of ferrite cover 30C.
• only one of the upper portion and the lower portion of each elastic column portion 33a may be connected to the plate portion 31.
• the gaps G1 need not have the labyrinth structure.
• the terminals 50 may each have a fixing portion 53c in place of the fixing portion 53a described above (the fixing portion integrally molded into the housing 20).
• the fixing portions 53c may be pressed into respective terminal holes 21h formed in the terminal holding portions 21b of the housing 20.
• the fixing portion 53c may include claws to be hooked on the inner face of the terminal hole 21h on right edge and the left edges thereof.
• the cover member 3 that closes the mounting recess 20b may have recessed portions 3b at positions corresponding to the terminals 50. This makes it possible to reduce the size of the connector IOC in the front-rear direction.
• FIGS. lOAto IOC are views illustrating a connector 10D, which is another example of the connector proposed in the present disclosure.
• FIG. 10A is a perspective view facing a front side of a ferrite cover 30D of connector IOC
• FIG. 10B is a perspective view facing a rear side of the ferrite cover 30D.
• FIG. IOC is a cross-sectional view of the connector 10D, and the cross section is the same as that in FIG. 4B.
• the connector 10D and the ferrite cover 30D will be described focusing on differences from the connector 10A or IOC and the ferrite cover 30A or 30C. Matters that are not described about the connector 10D and the ferrite cover 30D may be the same as those of the connector 10A or IOC and the ferrite cover 30A or 30C.
• the ferrite cover 30D includes a plurality of support protrusions 3 If arranged in the transverse direction.
• the support protrusions 3 If are formed on the front face of the plate portion 31 and protrude forward.
• the support protrusions 3 If are located at positions corresponding to the plurality of ferrites 2 to support the rear faces of the ferrites 2.
• the support protrusion 3 If is formed between two vertically separated through holes 31a.
• a plurality of gaps G2 arranged in the transverse direction are formed in the ferrite cover 30D. Similar to the gaps G1 illustrated in FIG.
• the gaps G2 each are a long hole that passes through the ferrite cover 30D in the front-rear direction and is elongated in the vertical direction.
• the length of the gap G2 in the vertical direction may be larger than the distance of the two vertically separated through holes 31a, for example.
• the interval between two gaps G2 adjacent to each other in the transverse direction may be smaller than the width of the ferrite 2. Similar to the gaps Gl, the gaps G2 may also have the labyrinth structure.
• each of the support protrusions 3 If is formed between the adjacent two of the gaps G2.
• the ferrite cover 30D is elastically deformable such that the positions of the plurality of support protrusions 3 If relatively change independently in the front-rear direction with respect to the engaging portions 33.
• the plurality of support protrusions 3 If can appropriately support the plurality of ferrites 2 according to the dimensions of the plurality of ferrites 2.
• the plurality of support protrusions 3 If can abut the rear faces of the plurality of respective ferrites 2 and push the ferrites 2 forward by the elastic force of the ferrite cover 30D.
• the engaging portions 33 abut the engaged portions 21f of the housing 20 and are restricted from moving rearward, while the position of one or more of the plurality of support protrusions 3 If may relatively change rearward relative to the engaging portion 33.
• the gaps G2 are also formed between the plurality of support protrusions 3 If (in other words, the plate portion 31) and the engaging portions 33.
• this ferrite cover is elastically deformable such that the positions of the engaging portions 33 change toward the inside of the housing 20. That is, the elastic column portions 33a provided with the respective engaging portions 33 can curve toward the center in the transverse direction, such that the positions of the engaging portions 33 can change toward the inside of the housing 20.
• This elastic deformation can be utilized to engage the engaging portions 33 of the ferrite cover 30D with the respective engaged portion 21 f formed on the inner face of the housing 20.
• the configuration of the gaps G2 is not limited to the example illustrated in FIGS. 10A to IOC.
• the plate portion 31 includes a portion located above the gaps G2 and a portion located below the gaps G2.
• the upper or lower ends of the gaps G2 may reach the edge of the ferrite cover 30D. This makes it easier to change in the position of each support protrusion 3 If in the front-rear direction.
• FIGS. 11 A and 11B are views illustrating a connector 10E, which is another example of the connector proposed in the present disclosure.
• FIG. 11 A is a perspective view of a front side of the ferrite cover 30E included in the connector 10E
• FIG. 10B is a cross-sectional view of the connector 10E, and the cross section is the same as that in FIG. 4B.
• the connector 10E and the ferrite cover 30E will be described focusing on differences from the connector 10A, IOC, or 10D and the ferrite cover 30A, 30C, or 30D. Matters that are not described about the connector 10E and the ferrite cover 30E may be the same as those of the connector 10A, IOC, or 10D and the ferrite cover 30A, 30C, or 30D.
• the ferrite cover 30E includes a plurality of support protrusions 31g arranged in the transverse direction.
• the ferrite 2 is disposed between the two adjacent support protrusions 31g.
• Side faces 31h of the support protrusions 31g support the edge of the ferrite 2.
• the side face 31h may be an inclined face and push the edge of the ferrite 2 forward. In this way, the rearward movement of the ferrite 2 can be restricted by the two support protrusions 3 lg.
• Each of the support protrusion 31 g has two partial protrusions 31 i separated from each other in the transverse direction. A recess is formed between the two partial protrusions 31 i.
• the two partial protrusions 31 i may be deformable toward the centers thereof. In this way, excessive stress can be prevented from acting on the ferrite 2.
• gaps G1 are formed between the plurality of support protrusions 3 lg (in other words, the plate portion 31) and the engaging portions 33.
• the gaps G1 each are a long hole that passes through the ferrite cover 30C in the front-rear direction and is elongated in the vertical direction.
• the ferrite cover 30E includes elastic column portions 33a provided with the engaging portion 33 on the rightmost and leftmost portions thereof. Due to the presence of the gaps Gl, the ferrite cover 30D is elastically deformable such that the positions of the engaging portions 33 change toward the inside of the housing 20.
• the ferrite cover 30E is elastically deformable such that the positions of the plurality of support protrusions 31g change in the front-rear direction with respect to the engaging portions 33.
• the ferrite cover 30E is elastically deformable such that the position of the plate portion 31 changes in the front-rear direction with respect to the engaging portions 33.
• the side face 3 lh of the support protrusion 3 lg can abut the edge of the ferrite 2 to push the ferrite 2 forward by the elastic force of the ferrite cover 30E.
• the connector 10A to 10E includes the terminating resistance circuit 40, the ferrites 2, the connecting portions 52 connected to the terminating resistance circuit 40, and the attaching portions 53b with the ferrite 2 attached thereto, the terminals 50 each having the fixing portion 53a located between the attaching portion 53b and the connecting portion 52, and the housing 20 that houses the terminals 50, the terminating resistance circuit 40, and the ferrites 2.
• the housing 20 includes the fitting recess 20a to which the mating connector 80 is fitted, the mounting recess 20b in which the terminating resistance circuit 40 and the connecting portions 52 are disposed, and the terminal holding portion 21b that is formed between the fitting recess 20a and the mounting recess 20b, partitions the fitting recess 20a and the mounting recess 20b, and holds the fixing portions 53b.
• the ferrites 2 and the attaching portions 53b are located closer to the fitting recess 20a than the terminal holding portion 21b (partition). According to this configuration, the number of components in the circuit using the ferrites 2 and the terminating resistance circuit 40 can be reduced.
• each terminal 50 includes the fixing portion 53a and the attaching portion 53b.
• the housing 20 includes the terminal holding portion 21b that holds the fixing portions 53a.
• the ferrites 2 are housed in the housing 20, are disposed in rear of the terminal holding portion 21b, and are attached to the respective attaching portions 53b.
• the ferrite covers 30A, and 30C to 30E each are housed in the housing 20 and are located in rear of the ferrites 2.
• the housing 20 has the engaged portions 21f protruding inward on the inner face thereof.
• the ferrite covers 30 A, and 30C to 30E each include the plate portion 31 located in rear of the ferrites 2, and the engaging portions 32 and 33 that are disposed along the inner face of the housing 20 and are restricted from moving rearward by the engaged portions 21f.
• the ferrite covers 30 A, and 30C to 30E each are elastically deformable such that the positions of the engaging portions 32 and 33 change toward the inside of the housing 20. According to this configuration, because the movement of ferrites 2 is suppressed by each of the ferrite covers 30A, and 30C to 30E, it is possible to suppress wear of ferrite 2 due to vibrations of the connectors 10A, and IOC to 10E.
• the ferrite covers 30C to 30E each include the gaps G1 or G2, and thus are elastically deformable such that the positions of the support protrusions 31e, 3 If, and 31g relatively change with respect to the engaging portions 33 in the front-rear direction. According to this configuration, the support protrusions 31e, 31f, and 31g can abut the ferrites 2 and push the ferrites 2 by the elastic force of the ferrite covers 30C to 30E, thereby suppressing the movement of the ferrites 2 more effectively.
• each of the three ferrites 2 is insertable into the two terminals 50 therethrough, however, seven (or six) through holes may be provided in one ferrite formed by integrating three ferrites 2.
• the partition portion 21i of the ferrite holding portion 21c of the relay portion 21 is not required.

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• 2020
  • 2020-11-30 JP JP2020198812A patent/JP2021111624A/ja active Pending
  • 2020-11-30 JP JP2020198811A patent/JP2021111623A/ja active Pending
• 2021
  • 2021-01-11 WO PCT/US2021/012874 patent/WO2021142399A1/en active Application Filing

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