JP6074684B2 - Pressure welding electrical connector - Google Patents

Description

  The present invention relates to a pressure contact electrical connector for making electrical connection by pressing a multi-core cable to a slit of a contact.

  As a conventional pressure welding electrical connector, a “board pressure welding connector” disclosed in JP-A-2002-237337 is known. The press contact connector includes a plurality of bent press contact terminals for connecting a plurality of electric wires and a connector housing, and an electrical contact portion is formed at one end of the press contact terminal disposed in the connector housing, A wire pressure contact portion having a slit-shaped pressure contact blade is formed at the end of the wire.

JP 2002-237337 A

However, in such a conventional pressure contact electric connector, since the electric wires are pressed and connected one by one, in order to connect a cable having a plurality of core wires such as a flat cable, the cables must be separated for each core wire. .
An object of this invention is to reduce the man-hour of the operation | work which connects a cable to a pressure-contact electrical connector, and to raise work efficiency.

  Therefore, the pressure contact electrical connector according to the present invention is a pressure contact electrical connector in which a plurality of core wires are connected to a cable arranged at substantially equal intervals, substantially parallel, and substantially planar, and a cable housing on which the cable is placed; A structure comprising a press-contact housing that fits into the cable housing, sandwiches the cable between the cable housing, and separates the cable for each core wire, and a plurality of contacts that are electrically connected to each separated core wire It was.

  The cable housing has a pressure contact holding portion on which the cable is placed, and the pressure contact holding portion is formed by laminating a plurality of plates having a thickness substantially the same as the interval between the plurality of core wires. Each of the crests is provided at a position adjacent to a trough of an adjacent plate, a through hole is provided at a position corresponding to the trough of each plate, A pressure contact portion that engages with the pressure contact holding portion, and the pressure contact portion is formed by stacking a plurality of plates having a thickness substantially the same as the interval between the plurality of core wires, and each plate includes a peak portion and a valley portion. Each peak portion engages with a trough portion of the press contact holding portion, each trough portion engages with a peak portion of the press contact holding portion, and each contact is electrically connected to the core wire of the cable. A press-connecting portion, the press-connecting portion projecting through a through-hole of the press-contact holding portion, and the plate of the press-contact holding portion and the Be electrically connected to the core wire of the cable which is separated from the adjacent wire is held between the plates of the contact portion is desirable.

  It is desirable that each through-hole of the press-contact holding portion is provided at a position different in the length direction of the plate with respect to a through-hole adjacent in the thickness direction of the plate.

  The pressure contact electrical connector includes a fitting connection portion that engages with another electrical connector, and the plurality of contacts have a tip connection portion that is electrically connected to another contact provided in the other electrical connector. The tip connection portion is arranged in two stages in the fitting connection portion, and the tip connection portion of the contact to which one of the adjacent core wires is electrically connected and the tip connection of the other contact to be electrically connected to the other core wire It is desirable that they be arranged on a different stage from each other.

  The pressure welding electrical connector has a fitting connection portion that fits into a mating connector, and includes an insulator having a plurality of contact receiving holes for receiving each contact, each contact including a tip connection portion and a core wire of the cable A pressure contact connection portion that is pressure contacted, and is housed in a contact housing hole of the insulator, the tip connection portion is arranged in two upper and lower stages in the fitting connection portion of the insulator, and the cable housing is Assembling the insulator to align the press contact connection portions of the contacts, and during the press contact, the cable is placed on an upper surface, and the press contact housing is between the cable housing attached to the insulator and the cable housing. The cable's core wire is pushed into the pressure contact connection portion of the contact with the cable interposed therebetween, and the pressure contact connection portions of the upper and lower two-stage contacts are both bent upward and protruded. It has been, said by pushing the press housing, wherein it is desirable to cables placed on the cable on the upper surface of the housing pressed against pushing the insulation displacement connection portion of the contact pressure working in one step is completed.

The pressure contact connecting portions adjacent in the left-right direction are staggered, the position of the pressure contact connection portion is offset in the left-right direction from the longitudinal axis of the contact, and the pressure contact of the contact in which the tip connection portion is arranged in the upper stage. It is desirable that the distance in the left-right direction between the connection portion and the contact pressure connection portion of the contact in which the tip connection portion is arranged at the lower stage facing the tip connection portion of the contact is substantially equal to the interval between the adjacent core wires of the cable. .
The position of the axial center of the contact in which the tip connection portion is arranged in the upper stage is the position of the longitudinal axis of the contact in which the tip connection part is arranged in the lower stage so as to face the tip connection part of the contact. It is desirable that they match in the left-right direction.
It is desirable that a confirmation window for visually recognizing the end position of the cable is provided in the pressure contact housing after the pressure contact.
It is desirable that the insulator is integrally provided with a locking claw that engages with the housing of the counterpart connector and locks the mating connector so that the mating can be released.

  According to the pressure contact electric connector according to the present invention, the cable is separated into the core wires by sandwiching the cable between the pressure contact housing and the cable housing, and the contacts are electrically connected to the separated core wires. The cable can be connected to the work efficiency.

The pressure contact holding part and the pressure contact part are formed by laminating a plurality of plates each having a peak part and a valley part, so that the cable can be separated for each core wire and protruded from a through hole provided at a position corresponding to the valley part. The core wire can be electrically connected to the connecting portion.
Since the through-holes of the press-contact holding part are provided at different positions in the length direction of the plate with respect to the through-holes adjacent in the thickness direction of the plate, the strength of the press-holding part is small even when the interval between the core wires is narrow Can keep.
The contact tip connection parts are arranged in two steps in the mating connection part, and are arranged on a different stage from the contact tip connection part connected to the adjacent core wire. The interval can be doubled.

  Since the pressure welding operation of a cable such as a flat cable is completed in one process, the number of steps is reduced and the work efficiency is increased. Since the press contact connection portions of the plurality of contacts arranged in two upper and lower stages in the fitting connection portion are projected in one direction, the cable can be press contacted from one direction.

  In addition, the pressure contact connecting portions adjacent in the left-right direction are staggered, and the distance between the press contact connection portions of the two contacts whose tip connection portions are vertically opposed is substantially equal to the distance between the adjacent core wires of the cable. The pressure contact electrical connector can be pressed against a narrow pitch cable.

  Further, the pressure contact electrical connector can electrically connect the cable along the same horizontal direction as the fitting direction between the connectors. By providing the insulator with a locking claw that fits and locks with the mating connector, the number of parts can be reduced, the cost can be reduced, and the connection workability can be improved.

The perspective view seen from the front side upper part which shows the pressure welding electrical connector which concerns on the Example of this invention. The perspective view seen from the back side lower side which shows the same pressure welding electrical connector. The top view which shows the same pressure welding electrical connector. The front view which shows the same pressure welding electrical connector. The left view which shows the same pressure welding electrical connector. The rear view which shows the same pressure welding electrical connector. The top view which shows the state which removed the press-contact housing in the same press-contact electric connector. FIG. 2B is a cross-sectional view taken along line XX in FIG. The perspective view which looked at the state which removed the pressure welding housing and the cable housing in the same pressure welding electrical connector from the front side upper direction. The layout which shows the positional relationship of the press contact of 2 steps | paragraphs of the upper and lower sides in the same press contact electrical connector. The perspective view seen from the back side upper side which shows the insulator in the same pressure welding electrical connector. The top view which shows the insulator. The front view which shows the insulator. The right view which shows the insulator. The left view which shows the insulator. The rear view which shows the insulator. The bottom view which shows the insulator. The top view which shows the press-contact of an upper stage. The front view which shows the press-contact of the same upper stage. The right view which shows the press contact of the same upper stage. The top view which shows the state with the carrier at the time of shaping | molding of the press contact of the same upper stage. The top view which shows the press-contact of a lower stage. The front view which shows the pressure contact of the lower stage. The left view which shows the press contact of the lower stage. The front view which shows the state with the carrier at the time of shaping | molding of the pressure contact of the lower stage. The top view which shows the state with the carrier at the time of shaping | molding of the press contact of the lower stage. The perspective view seen from the front side upper part which shows the cable housing in the same pressure welding electrical connector. The perspective view seen from the back side lower side which shows the cable housing. The top view which shows the cable housing. The front view which shows the cable housing. The right view which shows the cable housing. The left view which shows the cable housing. The bottom view which shows the cable housing. FIG. 14B is an enlarged cross-sectional view taken along line YY in FIG. 14A. The perspective view seen from the front side upper part which shows the press-contact housing in the same press-contact electrical connector. The perspective view seen from the back side lower side which shows the same press-contact housing. The top view which shows the same press-contact housing. The front view which shows the same press-contact housing. The left view which shows the same press-contact housing. The right view which shows the same press-contact housing. The bottom view which shows the same press-contact housing. The perspective view seen from the front side upper part which shows the process of attaching a pressure contact connector to the insulator in the pressure contact electrical connector. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process. The perspective view seen from the front side upper part which shows the same process.

  As shown in FIGS. 1A to 5, a press-contact electrical connector 1 according to the present invention includes an insulator 2 and a plurality of press-contacts 3 and 4. The insulator 2 has a fitting connection portion 2a. The fitting connection portion 2a is fitted with the mating connector. The pressure contact 3 includes a tip connection portion 3a and a pressure connection portion 3b. The pressure contact 4 includes a tip connection portion 4a and a pressure connection portion 4b. The distal end connection portions 3a and 4a are arranged in two upper and lower stages in the fitting connection portion 2a. The pressure connection portions 3b and 4b are provided at the base opposite to the tip connection portions 3a and 4a and are bent in the same direction (upward direction).

  The insulator 2 is made of synthetic resin. The insulator 2 has a fitting connection portion 2a on the front side and a contact accommodating hole 2b on the inner side. The contact accommodating hole 2b is for accommodating the press contact 3 and 4.

  The pressure contacts 3 and 4 are made of metal. The pressure contacts 3 and 4 are accommodated in the contact accommodating holes 2b of the insulator 2 and arranged in parallel in the front-rear direction. The press contact connection portions 3b of the press contact 3 are arranged in a staggered manner. That is, each press contact connection portion 3 b is disposed at a position shifted in the front-rear direction with respect to the press contact connection portion 3 b of the adjacent press contact contact 3. The press contact connection portion 4b of the press contact contact 4 is disposed on the rear side of the press contact connection portion 3b. That is, each press contact connection portion 4b is arranged at a position shifted in the front-rear direction with respect to the press contact connection portion 4b of the adjacent press contact contact 4. A core wire 7a (see FIG. 6) of a flat cable 7 (an example of a pressure welding cable) is pressure-welded to the pressure connection portions 3b and 4b. The flat cable 7 is a cable in which a plurality of core wires 7a are arranged at substantially equal intervals, substantially in parallel, and in a substantially planar shape. The tip connection part 3 a of the pressure contact 3 is arranged in the upper stage in the fitting connection part 2 a of the insulator 2. The distal end connection portion 4a of the pressure contact 4 is disposed on the lower stage in the fitting connection portion 2a so as to face the distal end connection portion 3a of the pressure contact 3.

  The cable housing 5 is made of synthetic resin and is assembled to the insulator 2. The cable housing 5 holds the press contact connection portions 3b and 4b of the press contact contacts 3 and 4 in alignment. A flat cable 7 is placed on the upper surface of the cable housing 5 during pressure contact.

  The pressure contact housing 6 is made of synthetic resin, and a flat cable 7 is sandwiched between the pressure housing 6 and the cable housing 5. The press-contact housing 6 presses the core wire 7 a of the flat cable 7 into the press-contact connection portions 3 b and 4 b of the press-contact contacts 3 and 4 to press-contact them.

  As shown in FIGS. 7 and 8A to 8F, the insulator 2 has a main body 2c, and the fitting connection portion 2a is provided on the front side wall side of the main body 2c. A space 2d is provided at the center of the main body 2c. The space 2d is open at the top and rear. A recess 2e is provided in front of the space 2d. The concave portion 2e is for pressing and positioning the end portion of the flat cable 7 against the front wall surface during the pressure welding operation. Locking claws 2f are provided integrally with the main body 2c on the left and right side walls of the main body 2c. The locking claw 2f engages with the housing of the mating connector and locks it so that it can be fitted and released. The locking claw 2f has a locking claw portion on the front side and a locking release knob on the rear side.

  The lower side of the space 2d is formed in a staircase shape. The contact receiving hole 2b has a through portion extending from the fitting connection portion 2a through the main body 2c in the front-rear direction to the rising portion of the staircase, and a step on the staircase of the space portion 2d continuously from the through portion in the rear direction. And a groove provided on the surface. As shown in FIG. 8A, the contact receiving holes 2b are provided at equal intervals in the left-right direction. As shown in FIG. 8B, the penetrating portions of the upper and lower two-stage contact accommodation holes 2b are arranged to face each other in the fitting connection portion 2a.

  As shown in FIG. 4, the press contact 3 is received in the upper contact receiving hole 2b by means such as press fitting. The press contact 4 is received in the lower contact receiving hole 2b by means such as press fitting. The lower pressure contact 4 is longer in the front-rear direction than the upper pressure contact 3. Further, the pressure contact portion 4b of the lower pressure contact 4 is longer in the vertical direction than the pressure contact portion 3b of the upper pressure contact 3, and the tip height is substantially equal.

  Further, as shown in FIGS. 8A and 8E, the axial centers of the contact receiving holes 2b arranged to face each other in the vertical direction coincide with each other in the horizontal direction. As a result, as shown in FIG. 6, the longitudinal axis a of the press-contacts 3 and 4 accommodated in the upper and lower contact accommodation holes 2b also coincides in the left-right direction.

  As shown in FIGS. 9A to 9C, the upper pressure contact 3 has a tip connection portion 3a on the front side and a pressure connection portion 3b on the rear side in the longitudinal direction. The tip connection part 3a is electrically connected to the contact of the mating connector. The pressure contact connecting portion 3b is bent upward. The pressure contact 3 includes two types having different lengths in the front-rear direction from the tip connection part 3a to the pressure connection part 3b. As shown in FIG. 10, the pressure contact 3 is formed by cutting a sheet metal sheet and simultaneously forming the pressure connection portion 3b by bending, and then separating it from the carrier 3d.

  As shown in FIG. 9C, the press contact connecting portion 3b is formed with a press contact slit 3c. The position of the axis b of the slit 3c in the left-right direction is offset by a predetermined dimension on the right side of the contact axis a.

  As shown in FIGS. 3 and 5, two types of press contact 3 having slightly different lengths from the tip connection portion 3 a to the press contact connection portion 3 b are alternately arranged. Thereby, the press-contact connection part 3b is arrange | positioned in zigzag form.

  As shown in FIGS. 11A to 11C, the lower pressure contact 4 has a tip connection portion 4a on the front side and a pressure connection portion 4b on the rear side in the longitudinal direction. The tip connection part 4a is electrically connected to the contact of the mating connector. The pressure contact connecting portion 4b is bent upward. The pressure contact 4 includes two types having different lengths in the front-rear direction from the tip connection portion 4a to the pressure connection portion 4b. As shown in FIGS. 12A and 12B, the pressure contact 4 is formed by cutting a sheet metal sheet and then cutting it from the carrier 4d. Note that the pressure contact portion 4b may be formed by bending with a bending jig before the pressure contact 4 is separated from the carrier 4d. Alternatively, the pressure contact 4 may be separated from the carrier 4d into the contact receiving hole 2b of the insulator 2. After inserting and press-fitting, as shown in FIGS. 17C to 17J, it may be formed by bending using a bending jig.

  As shown in FIGS. 11C and 12B, a press-contacting slit 4c is formed in the press-connecting portion 4b. The position in the left-right direction of the axis b of the slit 4c is offset by a predetermined dimension on the left side of the contact axis a.

  In this way, the slit 3c of the press contact connection portion 3b of the press contact 3 and the slit 4c of the press contact connection portion 4b of the press contact 4 are reversed left and right with respect to the longitudinal axis a of each of the press contacts 3 and 4. It is provided at a position offset in the direction.

  As shown in FIG. 6, the slits 3 c and 4 c of the press contact connection portions 3 b and 4 b are offset in the left and right reverse directions with respect to the longitudinal axis “a” of the press contact 3 and 4. The distance in the left-right direction between the slit 3c and the slit 4c is substantially equal to the pitch p between adjacent core wires 7a in the flat cable 7.

  In this manner, the press contact connecting portions 3b and 4b in the two upper and lower press contact contacts 3 and 4 are both bent upward, and the positions of the slits 3c and 4c are offset in the left and right reverse directions. Thereby, the press contact connection portions 3b and 4b of the press contact contacts 3 and 4 are aligned corresponding to the core wire 7a of the flat cable 7 having a very small pitch p.

  As shown in FIGS. 3 and 5, two types of press contact 4 having slightly different lengths from the tip connection portion 4 a to the press contact connection portion 4 b are alternately arranged. Thereby, the press-contact connection part 4b is arrange | positioned in zigzag form.

  The pressure contact 4 may be inserted from the contact receiving hole 2b after being cut from the carrier 4d shown in FIGS. 12A and 12B, and then bent into the contact receiving hole 2b. Alternatively, the pressure contact 4b May be pressed into the contact receiving hole 2b of the insulator 2 and then bent with a jig.

  As shown in FIGS. 13A to 13B and FIGS. 14A to 14F, the cable housing 5 has a pressure contact holding portion 5b on the upper side, fixed pieces 5c and 5d on the left and right sides, and a rear wall 5e on the rear side. The press-contact holding portion 5b is integrally formed in a shape in which a plurality of plates are stacked in the left-right direction. The thickness of each plate is substantially equal to the pitch p of the core wire 7a. Each plate has a crest that swells upward and a trough that is recessed downward, and the crest is arranged at a position adjacent to a trough of an adjacent plate. The press-contact holding part 5b has a through-hole penetrating in the vertical direction at a position corresponding to the valley part of each plate. The through hole accommodates and holds the pressure connection portions 3b and 4b of the pressure contacts 3 and 4. The through-holes are arranged in a staggered manner corresponding to the press-connecting portions 3b, 4b being arranged in a staggered manner. That is, valleys of two plates adjacent to the left and right (plate thickness direction) across one plate are arranged at substantially the same position in the front-rear direction, but are provided in the two valleys. The through hole is provided at a position shifted in the front-rear direction (length direction of the plate). In addition, the width in the left-right direction of the through hole is larger than the thickness of the plate (pitch p of the core wire 7a). For this reason, the peak part of each board is provided with the groove | channel on extension of a through-hole. By this groove, the press-connecting connection portions 3b and 4b protruding upward through the through-hole are held from the left and right. The fixing pieces 5 c and 5 d are rectangular frame bodies, and the cable housing 5 is attached and fixed to the insulator 2 by fitting into the space 2 d of the insulator 2.

  As shown in FIGS. 15A to 15B and FIGS. 16A to 16E, the press-contact housing 6 includes a rectangular flat plate body 6a, locking pieces 6b vertically provided from the left and right side ends of the flat plate body 6a, and a flat plate. And a press contact portion 6c provided on the back side surface of the main body 6a. The locking piece 6 b is a rectangular frame, and the press-contact housing 6 is attached and fixed to the insulator 2 by fitting into the space 2 d of the insulator 2. The pressure contact portion 6 c is for pressing the flat cable 7. The pressure contact portion 6 c engages with the pressure contact holding portion 5 b of the cable housing 5. The pressure contact portion 6c is integrally formed in a shape in which a plurality of plates are stacked in the left-right direction. The thickness of each plate is substantially equal to the pitch p of the core wire 7a. Each plate has a crest that swells downward and a trough that is recessed upward. Each peak portion engages with a valley portion of the press contact holding portion 5b, and each valley portion engages with a peak portion of the press contact holding portion 5b. Each peak is provided with a cut in order to avoid interference with the tips of the press contact connection portions 3b and 4b protruding from the through hole of the press contact holding portion 5b. The notches are arranged in a staggered manner corresponding to the positions of the through holes of the press-contact holding portion 5b.

  The flat plate body 6a of the press-contact housing 6 is provided with a confirmation window 6d that is a hole penetrating in the vertical direction, and a convex portion 6e is provided at the front end. The confirmation window 6 d is for visually recognizing the end position of the flat cable 7 placed on the upper surface 5 a of the cable housing 5. If the end of the flat cable 7 can be visually recognized within a predetermined range through the confirmation window 6d at the time of pressure welding, it can be confirmed that there is no problem with the alignment of the end of the flat cable 7 at the time of pressure welding. The convex portion 6 e is fitted in the concave portion 2 e in front of the space portion 2 d of the insulator 2.

  The pressure welding electrical connector 1 is constituted by the above members. Next, an assembly procedure of the pressure welding electrical connector 1 will be described with reference to FIGS. In the following, a case will be described in which after the press contact contacts 3 and 4 are press-fitted into the insulator 2, the press contact connecting portion 4b of the press contact 4 is bent.

  First, as shown in FIG. 17A, the press contact 3 is press-fitted into the upper contact housing hole 2 b in the space 2 d of the insulator 2. By alternately disposing two types of press contact contacts 3 having different lengths, the press contact connecting portions 3b are disposed in a staggered manner in the left-right direction.

  Next, as shown in FIG. 17B, the press contact 4 in which the press contact connection portion 4 b is not bent is press-fitted into the lower contact housing hole 2 b in the space 2 d of the insulator 2. By alternately disposing the two types of press contact contacts 4 having different lengths, the short press contact contacts 4 and the long press contact contacts 4 are alternately arranged in the left-right direction.

  As shown in FIG. 17C, the first bending jig 8 is inserted under the press contact portion 4 b of the press contact 4. The first bending jig 8 has a working plate 8b formed thin by a step, and a passing slit 8a is provided on the front side of the working plate 8b. The passage slit 8 a is for allowing the long pressure contact 4 of the long pressure contact 4 to pass therethrough.

  Next, as shown in FIG. 17D, the lid jig 9 is placed on the action plate 8 b of the bending jig 8. As a result, the step of the working plate 8b is eliminated, and the press contact connection portion 4b of the short press contact 4 is sandwiched between the first bending jig 8 and the lid jig 9. A concave portion (not shown) having a required depth is provided on the inner side surface of the lid jig 9 so as to accommodate the press contact connection portion 4b.

  As shown in FIG. 17E, the first bending jig 8 and the lid jig 9 are both raised upward from the horizontal state. As a result, the press-connecting portion 4b of the short press-contact 4 is sandwiched between the bending jig 8 and the lid jig 9, and is bent at a substantially right angle.

  As shown in FIG. 17F, when the lid jig 9 is removed, the press contact connection portion 4b of the short press contact 4 is bent upward, and the press contact connection portion 4b of the long press contact 4 is left in a horizontal state.

  Next, as shown to FIG. 17G, the front-end | tip part of the 2nd bending jig | tool 10 is inserted under the press-contacting connection part 4b of the long press-contacting 4 left in the horizontal state. Similar to the first bending jig 8, the second bending jig 10 has a working plate 10a formed to be thin by a step, but the working plate 10a is provided with a passage slit through which the press-contact connection portion 4b passes. Absent.

  Then, as shown in FIG. 17H, the lid jig 9a is placed on the action plate 10a of the second bending jig 10. As a result, the press contact connection portion 4b of the long press contact 4 is sandwiched between the second bending jig 10 and the lid jig 9a. A concave portion (not shown) having a required depth is provided on the inner side surface of the lid jig 9a so as to accommodate the press contact connection portion 4b.

  As shown in FIG. 17I, both the second bending jig 10 and the lid jig 9a are raised upward from the horizontal state substantially vertically. As a result, the press-connecting portion 4b of the long press-contact 4 is sandwiched between the bending jig 10 and the lid jig 9a and bent at a substantially right angle. When the bending jig 10 and the lid jig 9a are removed, as shown in FIG. 17J, in the space 2d of the insulator 2, the pressure contact portions 4b of the pressure contact 4 are arranged in a staggered manner in the left-right direction, Bent side by side.

  Thus, of the press contact contacts 3 and 4 arranged in two upper and lower stages, the upper press contact 3 is press-fitted into the contact receiving hole 2b of the insulator 2 with the press contact connecting portion 3b bent upward. Inserted. On the other hand, after the lower pressure contact 4 is press-fitted into and inserted into the contact housing hole 2b of the insulator 2, the pressure connection 4b is bent upward. Alternatively, after the press contact 4 is cut from the carrier 4d, the press contact connecting portion 4b is formed by bending with a jig, and then temporarily inserted into the contact accommodating hole 2b of the insulator 2 and may be press-fitted in a lump.

  Thereafter, the cable housing 5 is fitted to the insulator 2. The press contact connection portions 3b and 4b of the press contact contacts 3 and 4 are inserted into the through holes of the press contact holding portion 5b at respective positions in the front and rear directions. The distal ends of the press contact connection portions 3b and 4b protrude upward from the valley portion of the press contact holding portion 5b, but are at a position lower than the peak portion of the press contact holding portion 5b. The cable housing 5 is fixedly attached to the insulator 2 by the fixing pieces 5c and 5d being engaged with the claw portions (see FIG. 4) provided in the space 2d of the insulator 2.

  Next, a procedure for press-contacting the flat cable 7 to the press-connecting electrical connector 1 will be described. In a state where the cable housing 5 is attached to the insulator 2 and the pressure contact housing 6 is not attached, the flat cable 7 is placed on the upper surface 5 a of the cable housing 5. The flat cable 7 comes into contact with the top of the peak portion of the press-contact holding portion 5b, and a space is formed between the valley portion of the press-contact holding portion 5b and the flat cable 7. Each core wire 7a of the flat cable 7 is disposed at a position corresponding to each plate of the press contact holding portion 5b.

  The front end of the flat cable 7 is pressed against the front wall surface of the recess 2e, and the press-contact housing 6 is lowered from above and pressed against the flat cable 7. When the press-contact housing 6 is pressed down strongly, a portion of the flat cable 7 that is located above the valley portion of the press-contact holding portion 5b is pushed by the crest portion of the press-contact portion 6c, and the valley of the press-contact holding portion 5b. It is cut off from the part located on the peak part adjacent to the horizontal direction of the part. Thereby, the flat cable 7 is isolate | separated for every core wire 7a. The press contact connection portions 3b and 4b protruding from the valley portion of the press contact holding portion 5b are pierced into the flat cable 7 separated for each core wire, and each core wire 7a and the press contact connection portions 3b and 4b are electrically connected. The press-contact housing 6 is fixedly attached to the insulator 2 by the locking piece 6b being locked to a claw portion (see FIG. 4) provided in the space 2d of the insulator 2. In this way, as shown in FIG. 3, the core wire 7 a of the flat cable 7 is pressed into the slits 3 c and 4 c of the press-contacts 3 and 4.

  As described above, the pressure contact electrical connector 1 has the pressure contact connections 3b and 4b of the pressure contact contacts 3 and 4 bent upward in the same direction. The connection work of the cable 7 is completed. Further, it can be confirmed by the confirmation window 6d of the pressure contact housing 6 that the flat cable 7 is pressure contacted at a predetermined position. Since the flat cable 7 is alternately cut for each core wire 7a by the press contact holding portion 5b and the press contact portion 6c, the interval between the adjacent press contact connecting portions 3b, 4b is twice the pitch p of the core wire 7a, and the press contact contacts 3, 4 Can be made larger than the pitch p. Thereby, even when the pitch p is small, the press contact 3 and 4 can have sufficient strength. Further, by arranging the press contact connection portions 3b and 4b in a staggered manner, the through holes of the press contact holding portion 5b are also arranged in a staggered manner, so that the press contact holding portion 5b has sufficient strength even when the pitch p is small. Can be made.

  The pressure contact electrical connector 1 according to the present invention can be widely applied to a connector as a pressure contact structure of a pressure contact cable having a multi-core and a narrow pitch.

  DESCRIPTION OF SYMBOLS 1 Pressure contact electric connector, 2 Insulator, 2a Fitting connection part, 2b Contact accommodating hole, 2c Main body, 2d Space part, 2e Recessed part, 2f Locking claw, 3, 4 Pressure contact, 3a, 4a Tip connection part, 3b, 4b pressure contact portion, 3c, 4c slit, 3d, 4d carrier, 5 cable housing, 5a top surface, 5b pressure contact holding portion, 5c, 5d fixing piece, 5e rear wall, 6 pressure contact housing, 6a flat plate body, 6b locking piece, 6c pressure contact part, 6d confirmation window, 6e convex part, 7 flat cable, 7a core wire, 8 first bending jig, 8a passing slit, 8b, 10a action plate, 9, 9a lid jig, 10 second bending jig , A, b axis, p pitch.

Claims (7)

In the pressure contact electrical connector in which a plurality of core wires are connected to a cable arranged at substantially equal intervals, substantially parallel and substantially planar,
Multiple contacts,
A cable housing having a plurality of through holes;
A press-contact housing fitted with the cable housing;
An insulator having a fitting connection portion that fits with another electrical connector including a plurality of other contacts, and a plurality of contact receiving holes,
With
By placing the cable in the cable housing and fitting the pressure contact housing to the cable housing, the cable can be separated for each core wire sandwiched between the cable housing and the pressure contact housing,
Each contact
A tip connection portion disposed in the fitting connection portion and in electrical contact with the other contact; and
A press-contact connection portion that bends upward, protrudes from the cable housing through the through-hole, and is electrically connected to the separated core wire;
With
It is fixed to the insulator by press-fitting into the contact receiving hole from the inside,
The cable housing is
Wherein the plurality of the insulator contacts is fixed, is fixed to the insulator by assembling from above, the pressure contact connecting portion through the through hole and projecting from said cable housing,
The tip connection part is arranged in the upper stage or the lower stage in the fitting connection part,
The core wire adjacent to the core wire to which the upper contact in which the tip connection portion is arranged in the upper stage in the fitting connection portion is electrically connected is the lower contact in which the tip connection portion is arranged in the lower stage in the fitting connection portion. Electrically connected,
The upper contact is bent closer to the fitting connection portion than the lower contact, and the pressure contact connection portion is bent.
The insulator has a space in which the cable housing is assembled,
The space portion is formed in the shape of a staircase with the upper and lower two steps,
Each contact accommodating hole has a groove portion recessed from the top of the staircase, and a through portion that penetrates the insulator and communicates with the fitting connection portion,
The groove portion of the contact receiving hole into which the upper contact is press-fitted is provided on the upper step of the two upper and lower steps.
The groove of the contact receiving hole in which the lower contact is press-fitted, that provided in the lower stair of the staircase of the upper and lower stages,
A pressure welding electrical connector characterized by that. The cable housing has a pressure contact holding portion on which the cable is placed,
The press-contact holding portion is formed by laminating a plurality of plates having substantially the same thickness as the interval between the plurality of core wires, each plate having a crest and a trough, and each crest is an adjacent plate Provided in a position adjacent to the valley of the plate, the through hole is provided in the valley of each plate,
The press contact housing has a press contact portion that engages with the press contact holding portion,
The pressure contact portion is a shape in which a plurality of plates having a thickness substantially the same as the interval between the plurality of core wires is laminated, each plate of the pressure contact portion has a crest and a trough, and each of the pressure contact portions The crests engage with the troughs of the press-contact holding part, and the troughs of the press-contact part engage with the crests of the press-contact holding part,
Each core wire is sandwiched and held between the plate of the press contact holding portion and the plate of the press contact portion,
The pressure-contact electric connector according to claim 1. Each through hole of the press contact holding portion is provided at a position different in the length direction of the plate of the press contact connection portion with respect to a through hole adjacent in the thickness direction of the plate of the press contact connection portion.
The pressure contact electrical connector according to claim 2. The cable housing is assembled to the insulator to align the press contact connection portions of the contacts, and the cable is placed on the upper surface during the press contact,
The press-contact housing is pressed by pressing the core wire of the cable into the press-contact connection portion of the contact with the cable sandwiched between the cable housing assembled to the insulator,
By pressing the pressure contact housing, the cable placed on the upper surface of the cable housing was pressed into the pressure contact connection portion of the contact so as to complete the pressure contact work in one step.
The pressure contact electrical connector according to any one of claims 1 to 3 . The pressure contact housing is provided with a confirmation window for visually recognizing the end position of the cable after pressure contact.
Pressure electrical connector according to any one of claims 1 to 4, characterized in that. A method of assembling a pressure contact electrical connector in which a plurality of core wires are connected to a cable arranged at substantially equal intervals, substantially parallel and substantially planar ,
The pressure welding electrical connector is
Multiple contacts,
A cable housing having a plurality of through holes;
A press-contact housing fitted with the cable housing;
An insulator having a fitting connection portion that fits with another electrical connector including a plurality of other contacts, and a plurality of contact receiving holes,
With
By placing the cable in the cable housing and fitting the pressure contact housing to the cable housing, the cable can be separated for each core wire sandwiched between the cable housing and the pressure contact housing,
Each contact
A tip connection portion disposed in the fitting connection portion and in electrical contact with the other contact; and
A press-contact connection portion that bends upward, protrudes from the cable housing through the through-hole, and is electrically connected to the separated core wire;
With
It is fixed to the insulator by press-fitting into the contact receiving hole from the inside,
The cable housing is
The insulator, to which the plurality of contacts are fixed, is fixed to the insulator by assembling from above, and the press-contact connection portion protrudes from the cable housing through the through hole,
The method
Preparing a plurality of contacts in a state where the press-contact connection portion is not bent;
Each contact before bending is press-fitted into the contact receiving hole from the inside,
Using a jig, bend each contact to bend the pressure-contact connection part upward,
The cable housing is fixed to the insulator by assembling from above to the insulator to which the plurality of contacts are fixed, and the press contact connection portion protrudes from the cable housing through the through hole.
A method characterized by that. A method of assembling the press-contact electrical connector according to claim 1,
Preparing a plurality of contacts in a state where the press-contact connection portion is not bent;
Each contact before bending is press-fitted into the contact receiving hole from the inside,
Using a jig, bend each contact to bend the pressure-contact connection part upward,
The cable housing is fixed to the insulator by assembling from above to the insulator to which the plurality of contacts are fixed, and the press contact connection portion protrudes from the cable housing through the through hole.
A method characterized by that.

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