JP6718704B2 - Insulation displacement connector - Google Patents

Description

The present invention relates to a press-connecting connector that press-connects a conductor of a cable to a press-connecting terminal arranged in a housing.

An example of this type of pressure contact connector is disclosed in Patent Document 1.

As shown in FIGS. 15( a) and 15 (b ), this press-connecting connector 1 is supported by a housing 2 in which a plurality of press-connecting terminals 3 are arranged in a zigzag pattern at narrow intervals, and which can be opened and closed with respect to the housing 2. , The electric wire holder 5 that holds each electric wire 7 of the cable 6 in which a plurality of electric wires 7 are bundled together at the converging portion A.

At the same time as closing the electric wire holder 5 with respect to the housing 2, the core wire (conductor) of each electric wire 7 is press-connected to the press contact blades 3 a of each press contact terminal 3 of the housing 2.

JP2012-59710A (Patent No. 5249401)

In the conventional press-connecting connector 1, a discrete wire is used as the cable 6 so that the press-connecting blade 3a as the press-connecting portion of the press-connecting terminal 3 is free. The more the core wire of the electric wire 7 becomes, the more the load is applied to the press contact blade 3a of the press contact terminal 3, and the contact load between the press contact blade 3a of the press contact terminal 3 and the core wire of the electric wire 7 is deviated.

Therefore, the present invention has been made to solve the above-mentioned problems, and it is possible to minimize the amount of displacement of the conductors on both ends of the flat cable with respect to the pressure contact blade of the pressure contact terminal, and with the pressure contact blade of the pressure contact terminal. An object of the present invention is to provide a press-connecting connector that can easily and reliably reduce the deviation of the contact load of the conductors on both ends of the flat cable.

The invention according to claim 1 is a flat cable having a housing, a plurality of press-contact terminals arranged at intervals in the housing, a plurality of conductors arranged at intervals, and a covering portion for covering the plurality of conductors. And a holder for holding the flat cable, and in a press-connecting connector configured to press-connect each of the plurality of conductors of the flat cable to the plurality of press-connecting terminals while being held by the holder, the holder includes A flat cable insertion hole into which a flat cable is inserted is provided, a circular recess into which a conductor located at the center of the flat cable is inserted is provided in the center of the flat cable insertion hole , and an odd number of conductors of the flat cable are provided . Characterized in that they are arranged at intervals, and laterally oblong recesses are provided at positions where conductors other than the conductor located at the center among the odd-numbered conductors of the flat cable insertion holes are inserted. To do.

As described above, according to the first aspect of the invention, the holder is provided with the flat cable insertion hole into which the flat cable is inserted, and the conductor located at the center of the flat cable is inserted into the center of the flat cable insertion hole. Since the recess is provided, it can be easily set so that the center of the flat cable fits the center of the holder, and the amount of displacement of the conductors on both ends of the flat cable with respect to the press contact blade of the press contact terminal should be minimized. Therefore, it is possible to easily and surely reduce the deviation of the contact load between the press contact blade of the press contact terminal and the conductors on both ends of the flat cable.

In particular, according to the invention of claim 1 , the conductors of the flat cable are arranged at intervals of an odd number, and the conductors other than the conductor located at the center among the odd number conductors of the flat cable insertion hole are inserted. By providing the horizontally long and elliptical recesses at the positions, it is possible to absorb the pitch deviation between the conductors other than the conductors located at the center of the flat cable by the horizontally long and elliptical recesses.

It is the perspective view which looked at the press contact connector of one embodiment of the present invention from the back side. It is the perspective view which looked at the above-mentioned press contact connector from the front side. It is a perspective view showing the state before attaching the holder of the upper part side to the above-mentioned press contact connector. It is a perspective view showing the state before holding a flat cable in the holder. It is a perspective view of the said holder. (A) is a rear view of the said holder, (b) is an enlarged view of the X part in the same (a). It is a rear view which shows the state before attaching the holder of the upper stage side to the said pressure contact connector. FIG. 8 is an enlarged view of a Y portion in FIG. 7. It is a side view which shows the state before pressure contact connection of the said flat cable. It is a rear view which shows the state before pressure contact connection of the said flat cable. FIG. 6 is a side view showing the flat cable in the middle of pressure connection. It is a side view which shows the pressure contact connection state of the said flat cable. It is an expansion perspective view which shows the principal part of the said flat cable in the pressure connection state in partial cross section. FIG. 6 is an enlarged plan view of a main part of a holder in which a punch insertion window for confirming the pressure contact connection state of the flat cable is formed. FIG. 6A is a perspective view showing a state of the conventional pressure contact connector before pressure contact connection, and FIG. 6B is a perspective view showing the state of the same pressure contact connector after pressure contact connection.

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a press-connecting connector according to an embodiment of the present invention as seen from the back side, FIG. 2 is a perspective view of the press-connecting connector as seen from the front side, and FIG. 3 shows a state before an upper holder is attached to the press-connecting connector. FIG. 4 is a perspective view showing a state before the flat cable is held in the holder, FIG. 5 is a perspective view of the holder, FIG. 6A is a rear view of the holder, and FIG. ) An enlarged view of the middle X part, FIG. 7 is a rear view showing a state before the upper holder is attached to the same pressure contact connector, FIG. 8 is an enlarged view of the Y part in FIG. 7, and FIG. 9 is before pressure connection of the flat cable. FIG. 10 is a rear view showing the state before the same pressure contact connection, FIG. 11 is a side view showing the middle of the same pressure contact connection, FIG. 12 is a side view showing the same pressure contact connection state, and FIG. 13 is the same pressure contact. FIG. 14 is an enlarged perspective view showing a partial cross-section of a main part in a connected state, and FIG. 14 is an enlarged plan view of a main part of a holder having a punch insertion window for confirming the same pressure contact connection state.

As shown in FIGS. 1 to 3, a press-connecting connector 10 includes a lower housing 11 and an upper housing 12 as housings, a plurality of press-connecting terminals 20 arranged at intervals in the respective housings 11 and 12, and an interval between the press-connecting terminals 20. A flat cable (FC) 30 having a plurality of core wires (conductors) 31 and 32 arranged side by side, a coating portion 33 that insulates and coats the core wires 31 and 32, and two holders 40 that hold the flat cable 30. The plurality of core wires 31 and 32 of the flat cable 30 are pressed and connected to the pair of press contact blades 23 and 23 of the press contact terminals 20 while being held by the holder 40.

The lower housing 11 and the upper housing 12 are made of synthetic resin, and as shown in FIGS. 3 and 7, the upper housing 12 is located above the lower housing 40 mounted on the lower housing 11. It is adapted to be assembled to the lower housing 11. As shown in FIGS. 3 and 8, the lower housing 11 and the upper housing 12 are provided with a plurality of terminal accommodating chambers 11a and 12a, respectively. The plurality of terminal accommodating chambers 11a and 12a are arranged in parallel at equal intervals.

As shown in FIGS. 3 and 8, the press contact terminal 20 is housed in each terminal housing chamber 11 a, 12 a of the lower housing 11 and the upper housing 12. The press-connecting terminal 20 has a box-shaped terminal connecting portion 21 into which a terminal of a mating connector (not shown) is inserted, and a cable connecting portion 22 connected to the rear of the box-shaped terminal connecting portion 21. Is integrally formed by bending a conductive metal (not shown) having a desired shape. The cable connecting portion 22 has two U-shaped pressure contact blades (pressure contact terminal portions) 23, 23 and one clamp blade 24, which are provided upright at intervals in the longitudinal direction. The U-shaped press contact blade 23 is formed in such a size that it pierces the covering portion 33 a covering the core wires 31 and 32 of the flat cable 30 and presses against the core wires 31 and 32. The clamp blade 24 has almost the same shape as the press contact blade 23, but has an insertion hole larger than the diameter dimension of the core wires 31 and 32 of the flat cable 30 and does not press contact with the core wires 31 and 32 and is covered with the covering portion 33. It is formed so as to pierce only the covering portion 33a that covers the core wires 31 and 32.

As shown in FIGS. 1 to 4, the flat cable 30 includes an odd number (13 in this embodiment) of core wires (conductors) 31 and 32 arranged in parallel at intervals. It is formed in a flat shape from the insulating covering portion 33 that covers it. Further, as shown in FIG. 4, rectangular slits 34 are formed at the ends of the covering portion 33 between the adjacent core wires 32, 32 and 31, 32 of the flat cable 30, respectively.

The holder 40 is made of a synthetic resin, and has a horizontally long flat cable insertion hole 41 into which the flat cable 30 is inserted from the back side to the front side. At the center (center) of the flat cable insertion hole 41, a circular recess 42 is formed on the back surface, into which the core wire 31 located at the center (center) of the flat cable 30 is inserted. Further, at the positions where the core wires 32 other than the core wire 31 located at the center of the flat cable 30 in the flat cable insertion hole 41 are inserted, a horizontally elongated rear surface oval recess 43 is formed.

As shown in FIGS. 2 to 5, a plurality of punches 51 of the pressure welding jig 50 for pressing the covering portions 33a of the core wires 31 and 32 of the flat cable 30 are inserted into the upper surface of the holder 40 on the front side. A plurality of punch insertion windows 44 are formed in front and rear double rows (two rows in front and rear in this embodiment) so as to communicate with the flat cable insertion hole 41, respectively (13 in this embodiment).

Then, as shown in FIGS. 7 and 8, by pressing the holder 40, which holds the flat cable 30 inserted into the flat cable insertion hole 41, from above, the holder 40 is pressure-welded while being assembled to the lower housing 11 and the upper housing 12. Is supposed to do. That is, as shown in FIGS. 9 to 12, the plurality of core wires 31 and 32 of the flat cable 30 inserted into and held in the flat cable insertion hole 41 from the rear of the holder 40 are respectively attached to the lower housing 11 or the upper housing 12. When press-connecting to the pair of press-contact blades 23, 23 of the press-contact terminals 20 housed in the terminal accommodating chambers 11a, 12a, the punches 51 of the press-fitting jig 50 are inserted into the punch insertion windows 44 of the holder 40. As shown in FIG. 13, the punches 51 directly press the covering portions 33a of the core wires 31 and 32 of the flat cable 30 for pressure contact connection. After this pressure connection, as shown in FIG. 14, by checking the flat cable 30 from the punch insertion window 44 of the holder 40, the pressure contact height can be adjusted (managed), and the flat cable 30 can be attached to the pressure contact blade 23. It is possible to stab the

As shown in FIGS. 2 and 3, on both sides of the holder 40, locking arms 45 that are locked by the engaging projections 11b of the lower housing 11 and the engaging projections 12b of the upper housing 12 extend downward. It is formed integrally with.

According to the press-connecting connector 10 of the embodiment described above, when the lower-stage holder 40 holding the flat cable 30 inserted and held in the flat cable insertion hole 41 on the lower housing 11 is mounted, the flat cable held by the lower-stage holder 40 is attached. The lower housing 11 is provided with 30. In this mounting process, since the flat cable 30 is pressed and connected to the plurality of pressure contact terminals 20 accommodated in the plurality of terminal accommodating chambers 11a of the lower housing 11 by the lower-side holder 40, the pressure contact of each pressure contact terminal 20 is suppressed. The blade 23 penetrates the covering portion 33 and bites into the core wires 31 and 32 to make electrical contact.

Then, when the upper housing 12 is mounted on the lower housing 11, the lower housing 11 and the upper housing 12 are integrated as shown in FIG. After that, as shown in FIG. 2, the upper-stage holder 40 with the flat cable 30 is mounted on the upper housing 12. By mounting the holder 40 on the upper stage side to the upper housing 12, the flat cable 30 is pressure-contacted and connected to the plurality of pressure-contact terminals 20 housed in the plurality of terminal housing chambers 12a of the upper housing 12. The press-contact blade 23 of (1) penetrates the covering portion 33 and bites into the core wires 31 and 32 to make electrical contact.

When press-connecting the flat cable 30 to the press-connecting blade 23 of the press-connecting terminal 20, the covering portion 33a of each core wire 32 other than the core wire 31 located at the center is horizontally elongated in the flat cable insertion hole 41 of the holder 40 and has an oval rear surface. Since it can be displaced laterally (widthwise) independently in the recess 43, it is possible to absorb a pitch deviation between the pressure contact blades 23 of the pressure contact terminal 20 and the core wire 32 of the flat cable 30, and a proper electrical connection state. Can be obtained.

In this way, the flat cable insertion hole 41 into which the flat cable 30 is inserted from the rear is formed in the holder 40, and the back circular shape into which the core wire 31 located in the center of the flat cable 30 is inserted in the center of the flat cable insertion hole 41. By forming the concave portion 42, it is possible to easily set the flat cable 30 so that the center (center) of the holder 40 is aligned with the center (center) of the holder 40. Therefore, the amount of displacement of the core wires 32 on the left and right ends of the flat cable 30 with respect to the press contact blade 23 of the press contact terminal 20 can be minimized, and the press contact blade 23 of the press contact terminal 20 and the core wires on the left and right end sides of the flat cable 30 can be suppressed. The deviation of the contact load of 32 can be reduced.

Furthermore, the core wires 31 and 32 of the flat cable 30 are arranged at intervals of an odd number (13 in this embodiment), and each core wire 32 other than the core wire 31 located at the center of the flat cable insertion hole 41 of the holder 40 is arranged. Since the horizontally long and rear elliptical recesses 43 are formed at the insertion positions, the laterally long and rear elliptical recesses 43 absorb the pitch deviation between the core wires 32 other than the core wire 31 located at the center of the flat cable 30. Therefore, it is possible to obtain an appropriate electrical connection state.

That is, when all the recesses of the flat cable insertion hole 41 of the holder 40 are horizontally long and have an oval back surface, when the flat cable 30 is inserted into the flat cable insertion hole 41 of the holder 40, the flat cable 30 is placed on either side. Although there is a risk of deviation, and the amount of displacement of the core wires 32 on both the left and right ends of the flat cable 30 becomes large, only the recess 42 located in the center of the flat cable insertion hole 41 of the holder 40 is formed into a circular back surface. The flat cable 30 is always set at the center of the holder 40 by forming the other parts in the horizontally elongated rear surface elliptical recess 43, and the displacement amount of the core wires 32 on the left and right end sides of the flat cable 30 with respect to the press contact blade 23 of the press contact terminal 20. Can be minimized. As a result, it is possible to easily and reliably reduce the deviation of the contact load between the press contact blade 23 of the press contact terminal 20 and the core wires 32 on the left and right ends of the flat cable 30.

In addition, according to the above-mentioned embodiment, although the conductors of the flat cable are arranged at intervals of 13 conductors, other odd conductors such as 9 conductors or 11 conductors may be arranged. Further, although the number of recesses of the flat cable insertion hole of the holder is matched with the number of conductors of the flat cable, the number of conductors of the flat cable may be smaller than the number of recesses of the flat cable insertion hole of the holder. Even in this case, if the conductor located at the center (center) of the flat cable is inserted into the circular recess located at the center (center) of the flat cable insertion hole of the holder, the center of the flat cable will be aligned with the center of the holder. Can be set easily.

10 Pressure contact connector 11 Lower housing (housing)
12 Upper housing (housing)
20 pressure contact terminal 30 flat cable 31 core wire located in the center (conductor)
32 Core wires (conductors) other than the center
33 coating part 40 holder 41 flat cable insertion hole 42 circular recess 43 horizontal oblong recess

Claims (1)

A housing; a plurality of press-contact terminals arranged at intervals in the housing; a flat cable having a plurality of conductors arranged at intervals and a covering portion for covering the plurality of conductors; and holding the flat cable In the pressure-welded connector, wherein the plurality of conductors of the flat cable are respectively pressure-welded to the plurality of pressure-contact terminals while being held by the holder,
The holder is provided with a flat cable insertion hole into which the flat cable is inserted, and the center of the flat cable insertion hole is provided with a circular recess into which a conductor located in the center of the flat cable is inserted .
Moreover, the conductors of the flat cable are arranged at intervals of an odd number, and the oblong shape is horizontally elongated at a position where each conductor other than the conductor located at the center among the odd number conductors of the flat cable insertion hole is inserted. The press-connecting connector is characterized in that each of the recesses is provided .

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