JP3405448B2 - Flat cable connector - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flat cable connector. 2. Description of the Related Art Conventionally, there is a flat cable connector disclosed in Japanese Patent Application Laid-Open No. 9-55243. As shown in FIG. 9, the housing 100 includes a housing 100 fixed to a circuit board, and terminal fittings 101 attached to the housing 100 and connected to the circuit board.
Are connected. The flat cable 102 includes a plurality of conductors 103 that are formed on an insulating sheet 104.
And the conductor 103 is projected from the leading edge of the insulating sheet 104 in the terminal portion. [0003] As a means for connecting the flat cable connector and the flat cable 102, a positioning groove 105 corresponding to the terminal fitting 101 is formed in the housing 100.
The exposed conductor 103 of the flat cable 102 is fitted into the positioning groove 105, is addressed to the terminal fitting 101, and the conductor 103 is fixed to the terminal fitting 101 by pressing the conductor 103 with the holding bar 106 and the cover 107. ing. [0004] In the flat cable connector described above, once the flat cable 1 is connected.
When the cover 103 is removed, the cover 103 and the holding bar 106 are removed to remove the conductor 103 from the positioning groove 105. At this time, the holding bar 10 to be removed is removed.
6, the conductor 103 may be deformed, and in the detached state, the positioning of the conductor 103 is released, so that the conductor 103 is easily disturbed in alignment or deformed. Therefore, when the flat cable 102 is connected to the flat cable connector again, the conductor 103 has to be shaped and aligned, and there is a problem that workability is not good. The present invention has been made in view of the above circumstances, and an object of the present invention is to improve workability when reattaching a once detached flat cable. According to a first aspect of the present invention, there is provided a housing fixed to a circuit board, and a terminal fitting connected to the circuit board while being held by the housing. In a flat cable connector configured to connect the conductor to the terminal fitting by attaching a flat cable obtained by projecting a plurality of conductors in parallel from a terminal to the housing, the housing holds the terminal fitting and A circuit-side housing fixed to the circuit board; and a cable-side housing for holding the flat cable, wherein the cable-side housing has the terminal fitting and the conductor in a fitted state with the substrate-side housing. And an intermediate terminal for connecting the conductor to the conductor.
Away from the conductor and the contact point in the direction perpendicular to the direction
Between the two housings.
In the fitted state, the terminal fitting connects the intermediate terminal to the conductor side.
It is configured to be elastically pushed . [0010] The conductor of the present invention is connected to the terminal fitting by assembling the cable side housing holding the flat cable to the board side housing.
When the conductor is disengaged from the terminal fitting, the cable-side housing is detached from the board-side housing. At this time, since the flat cable is still held by the cable-side housing, the conductor does not disturb the alignment or deform. Therefore, when the conductor is connected to the terminal fitting again, it is not necessary to shape and align the conductor, and the workability is excellent. Also, the conductor is not in direct contact with the terminal, but the conductor is indirectly connected to the terminal by contacting the intermediate terminal provided on the conductor with the terminal. When the terminal is fitted, it is possible to prevent the terminal fitting from rubbing against the conductor, and to prevent the conductor from being deformed or worn due to the rubbing. Furthermore, when both housings are fitted, the terminal fitting elastically presses the intermediate terminal against the conductor, whereby the conductor is connected to the terminal fitting via the intermediate terminal. Since the intermediate terminal is swingable, the elastic pressing force of the terminal fitting directly acts on the conductor, so that a predetermined contact pressure can be secured. [First Embodiment] A first embodiment of the present invention will be described below with reference to FIGS. The flat cable connector according to the present embodiment includes a housing 10 fixed to a circuit board, and the housing 1.
And a terminal fitting 13 connected to a circuit on the circuit board while being held at 0, and the flat cable 41 is connected to the circuit board via the flat cable connector. Here, the flat cable 41 will be described. The flat cable 41 is obtained by fixing a plurality of shielded wires 42 in parallel, and the conductor 43 of each shielded wire 42 is exposed from a terminal thereof at a constant pitch. , And each conductor 43 is connected to the terminal fitting 13. Also, conductor 4
On the base end side with respect to 3, the shield layers (not shown) of all the shielded electric wires 42 are fixed in a state of being short-circuited by a plate-shaped short-circuit plate 44. The ends of the conductors 43 are held at a predetermined pitch by an alignment sheet 45. The housing 10 holds a terminal fitting 13 and is fixed to a circuit board.
And a cable-side housing 16 for holding the flat cable 41. The cable-side housing 16 can be fitted to and detached from the board-side housing 11. When the two housings 11 and 16 are fitted, the conductor 43 is connected to the terminal fitting 13, and the two housings 1 are connected.
When the conductors 1 and 16 are separated, the conductor 43 is separated from the terminal fitting 13. The board-side housing 11 includes a resin housing body 12 fixed to a circuit board and a plurality of terminal fittings 1.
3 and a pair of grounding fittings 14.
In the housing body 12, slit-shaped mounting grooves 15 which are open on the rear surface and the lower surface and penetrate the front surface at the upper position are formed in parallel at a constant pitch, and the terminal fittings 13 are press-fitted into each mounting groove 15. I have. The terminal fitting 13 has a rear end portion serving as an attachment portion 13A to the circuit board, and a pair of upper and lower arms 13B and 13C protruding forward from the attachment portion 13A in a cantilever manner. Insert terminal fitting 13 into mounting groove 1
5, the upper arm portion 13B is brought into contact with the upper surface of the mounting groove 15 to be fixed, and the lower arm portion 13C is allowed to elastically bend downward. The conductor 43 of the cable-side housing 16 is inserted between the distal ends of the upper and lower arms 13B and 13C. The grounding fittings 14 are mounted by being press-fitted from below into mounting holes (not shown) at both left and right end portions of the housing body 12. The grounding fitting 14 has a grounding connection portion 14A for connecting to a grounding circuit of a circuit board, and a shield cover 19 described later.
An elastic contact portion 14B is formed to elastically contact with the elastic member. The cable-side housing 16 includes a resin-made positioning member 17 capable of positioning the conductor 43 and a resin-made pressing member 1 that can be assembled to the positioning member 17.
8 and a shield cover 19. In a state where both members 17 and 18 are assembled, the conductor 43 of the flat cable 41 includes the positioning member 17 and the pressing member 18.
Is held between them. The positioning member 17 has a thick plate shape as a whole, and a positioning groove 20 extending in the front-rear direction for individually positioning the conductors 43 is formed in a front half region of an upper surface thereof. The front end of each of the positioning grooves 20 has a bottom and serves as a support 21 that can receive the conductor 43 against pressure from above. Also, this bearing part 2
In the area behind the area 1, the bottom surface is opened downward, and the area under the opening is the terminal accommodating groove 22. The upper side of the terminal accommodating groove 22 communicates with the positioning groove 20, and the lower side is open to the outside. This open portion is a connection hole 23 with the terminal fitting 13. When the housings 11 and 16 are fitted, the connection hole 23 corresponds to the tip of the lower arm portion 13C of the terminal fitting 13. Further, a shaft portion 24 for supporting the intermediate terminal 25 housed in the terminal housing groove 22 is formed at the rear end of the terminal housing groove 22. The intermediate terminals 25 are individually accommodated in the respective terminal accommodating grooves 22 and serve to connect the conductor 43 and the terminal fitting 13. The intermediate terminal 25 is formed by integrally forming an arc-shaped portion 25A rotatably fitted to the shaft portion 24 and an arm piece 25B protruding forward from the arc-shaped portion 25A. The intermediate terminal 25 is formed by dropping the arc-shaped portion 25A into the positioning groove 20 with the arm piece 25B facing upward, fitting it into the shaft portion 24, and rotating and displacing the arm piece 25B downward. The intermediate terminal 25 is accommodated in the arm piece 25B around the shaft portion 24.
Is allowed to swing up and down. The arm piece 25B is located directly below the conductor 43, and waits in a state where the arm piece 25B is in contact with the conductor 43 or only a small gap is left between the conductor 43. In the rear half area on the upper surface of the positioning member 17, the mounting surface 26 on which the short-circuit plate 44 of the flat cable 41 is mounted and the short-circuit plate 44 on which the short circuit plate 44 is mounted are restricted on the mounting surface 26. And a stopper piece 28 for restricting the positioned short-circuit plate 44 from coming off upward. Further, a pair of front and rear locking holes 29 and 30 for locking the shield cover 19 in the assembled state, and a pair of locking holes 29 and 30 for locking the holding member 18 in the assembled state are provided at both left and right ends of the positioning member 17. A stop projection 31 is formed. The holding member 18 is assembled by being fitted to the positioning member 17 from above, and is locked in the assembled state by engaging the locking pieces 32 on both side ends with the locking projections 31. You. Pressing ribs 33 corresponding to the respective positioning grooves 20 are formed on the lower surface of the pressing member 18, and the pressing ribs 33 press the conductor 43 positioned in the positioning grooves 20 with the support 21. Idle regulation. Further, through holes 34 are formed at both side ends of the holding member 18 so as to align with the locking holes 29 on the front side of the positioning member 17. Further, a relief recess 35 for preventing interference with the elastic contact piece 38 of the shield cover 19 is formed at the rear end edge of the pressing member 18. The shield cover 19 is assembled from above onto the positioning member 17 and the holding member 18 which have been assembled. A pair of press-fitting pieces 36 formed by cutting and raising and a pair of press-fitting pieces 37 formed by bending are formed on both right and left ends of the shield cover 19. These press-fitting pieces 36, 37 are engaged with the locking holes 29 of the positioning member 17. , 30 are held in the assembled state. At the rear end edge of the shield cover 19, an elastic contact piece 38 is formed which is bent obliquely forward and downward.
Are elastically in contact with the upper surface of the short-circuit plate 44 of the flat cable 41. The shield cover 19 is provided with a connecting plate portion 39 which extends greatly in front of the two members 17, 18, and at both left and right ends of the connecting plate portion 39, the elastic contact portions 14 B of the board-side housing 11 are provided. Is formed in a form bent downward. Next, the operation of the present embodiment will be described. The board-side housing 11 has a terminal fitting 1 attached to the housing body 12.
3 and the grounding metal fitting 14 are press-fitted. In this state, the housing body 12 is fixed to the circuit board, and each terminal fitting 13 is connected to a circuit on the circuit board by soldering (not shown). Soldering (not shown)
To connect to the earth circuit on the circuit board. On the other hand, for the cable side housing 16, the intermediate terminal 25 is attached to each terminal accommodating groove 22 of the positioning member 17, the flat cable 41 is placed on the upper surface of the positioning member 17,
4 is positioned by the regulating portion 27, and each conductor 4
3 is positioned in the positioning groove 20 (see FIG. 2). In this state, the holding member 18 is assembled to the positioning member 17. Then, each conductor 43 is pinched and held between the pressing rib 33 of the pressing member 18 and the supporting portion 21 at the distal end. After holding the conductor 43, the portion of the conductor 43 that protrudes forward from the positioning groove 20 is cut, and the alignment sheet 45 is cut off from the flat cable 41. Next, the shield cover 19 is attached to both members 17 and 18. Then, the elastic contact piece 3 of the shield cover 19
8 comes into contact with the short-circuit plate 44 and becomes conductive. Next, the cable side housing 16 is fitted to the board side housing 11. The fitting is performed by inserting the front end of the cable side housing 16 where the positioning groove 20 is formed between the two arm portions 13B and 13C, and attaching the shield cover 19 to the upper surface and side surfaces of the housing main body 12 of the board side housing 11. Let it do. In the fitted state, the lower arm portion 13C is
5 is elastically pressed into contact with the arm piece 25B from below, and the pressing force of the arm portion 13C causes the arm piece 25B
Abuts on the conductor 43 from below, whereby the conductor 43 is electrically connected to the circuit on the circuit board. In addition, when the connection wall portion 40 of the shield cover 19 comes into contact with the elastic contact portion 14B of the grounding metal fitting 14, the flat cable 4
The first shield layer (not shown) can be electrically connected to the ground circuit of the circuit board, and the conductive path exposed from the shield layer to the conductor 43 and the terminal fitting 13 is shielded by the shield cover 19. When the flat cable 41 connected to the circuit board as described above is detached from the circuit board, it is only necessary to pull out the cable side housing 16 from the board side housing 11. At this time, since the flat cable 41 is kept held by the cable-side housing 16, the conductor 43 does not disturb the alignment or deform even when the cable-side housing 16 is detached from the board-side housing 11. Therefore, when the flat cable 41 is connected to the circuit board again, it is not necessary to shape and align the conductors 43, and the workability is excellent. The conductor 43 does not come into direct contact with the terminal fitting 13 but the intermediate terminal 25 provided on the conductor 43 is brought into contact with the terminal fitting 13 so that the conductor 43 is brought into contact with the terminal fitting 1.
3 is indirectly connected to the two housings 11,
When fitting the terminal fitting 1 to the conductor 43,
3 is prevented from rubbing, and the conductor 43 caused by the rubbing is prevented.
Deformation and wear can be prevented. When the housings 11 and 16 are fitted together, the arm 13C of the terminal fitting 13 pushes the intermediate terminal 25 to elastically press the intermediate terminal 25 against the conductor 43.
Is swingable, the elastic pressing force of the terminal fitting 13 directly acts on the conductor 43, and a predetermined contact pressure can be secured. The pressing member 18 is moved to the positioning member 17.
When holding the conductor 43 by attaching it to the
8 presses the conductor 43 positioned on the positioning member 17 in a direction intersecting the length direction thereof, so that the conductor 43 does not need to be displaced in the length direction. Second Embodiment Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the intermediate terminal has a configuration different from that of the first embodiment. Other configurations are the same as those of the first embodiment, and thus the same configurations are denoted by the same reference numerals, and
The description of the operation and the effect is omitted. The intermediate terminal 50 of the present embodiment comprises a “U” -shaped fitting part 51 and an arm piece 52 projecting forward from the fitting part 51, and the fitting part 51 is formed in a rectangular shape of the terminal accommodating groove 22. By being fitted to the holding portion 53, it is mounted in a floating control state. The intermediate terminal 50 is connected to both members 17 and 18.
Is assembled, the arm piece 52 presses the conductor 43 against the holding rib 33 by its elastic force, and is connected with a predetermined contact pressure. The lower arm portion 13C of the board-side housing 11 elastically contacts the arm piece 52 of the intermediate terminal 50 from below. [Other Embodiments] The present invention is not limited to the embodiments described above and illustrated in the drawings. For example, the following embodiments are also included in the technical scope of the present invention. In addition, various changes can be made without departing from the scope of the invention. (1) Although the above embodiment describes an example in which the present invention is applied to a flat cable connector having a shielding function, the present invention can also be applied to a flat cable connector having no shielding function.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a positioning member and a flat cable in a cable side housing according to a first embodiment. FIG. 2 is a perspective view showing a state in which a holding member is removed from a positioning member in a cable side housing. FIG. 3 is a perspective view showing a state where a shield cover is removed from both members in a cable side housing. FIG. 4 is a perspective view showing a state where a cable side housing is removed from a board side housing. FIG. FIG. 6 is a sectional view showing a state where the cable side housing is fitted to the board side housing. FIG. 7 is a sectional view showing a state where the cable side housing is removed from the board side housing in the second embodiment. FIG. 8 shows a state in which the cable-side housing is fitted to the board-side housing in the second embodiment. FIG. 9 is a perspective view of a conventional example. [Description of References] 10 ... Housing 11 ... Board side housing 13 ... Terminal fitting 16 ... Cable side housing 25 ... Intermediate terminal 41 ... Flat cable 43 ... Conductor 50 ... Intermediate terminal

Claims (1)

(57) [Claims] A housing fixed to a circuit board;
Connected to the circuit board while being held in the housing.
And a plurality of conductors from the terminal.
Take the flat cable protruding in parallel into the housing
By connecting the conductor to the terminal fitting
Flat cable connector The housing is While holding the terminal fitting, it is fixed to the circuit board.
Board side housing Cable side housing for holding the flat cable
And The cable-side housing includes the board-side housing.
The terminal fitting and the conductor are connected in the fitting state with
The intermediate terminal to be in the state is provided, The intermediate terminal is perpendicular to the length direction of the conductor;
Between the position in which the conductor contacts the conductor and the position in which the conductor separates from the conductor.
Swingable between the two housings.
The terminal fitting elastically pushes the intermediate terminal toward the conductor.
Configuration For flat cable
connector.