JP3092753B2 - Low insertion force connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low insertion force connector having a structure in which a screw shaft provided on one connector is rotated to draw and fit the other connector.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional low insertion force connector described in Japanese Utility Model Application Laid-Open No. 60-875. The low insertion force connector 57 includes a female connector 58 and a bolt 59.
Are provided in the connector fitting direction, and a nut 61 for the bolt 59 is fixedly mounted on the male connector 60. Even if the connectors 58 and 60 have terminals in multiple poles, The engagement between the nut 59 and the nut 59 is performed with low force.

However, the conventional structure has a disadvantage that the connector 57 is enlarged in the fitting direction because the bolt 59 is inserted in the connector fitting direction.
When the cables are routed in parallel along the bottom of the vehicle and assembled in a narrow space such as an instrument panel of a vehicle, there is a problem that work is difficult and fitting operability is poor.

[0004]

SUMMARY OF THE INVENTION In view of the foregoing, it is an object of the present invention to provide a low insertion force connector which can be easily assembled even in a narrow space and has good operability in fitting.

[0005]

In order to achieve the above object, the present invention provides a connector in which a screw shaft is rotatably provided in one connector at right angles to a connector fitting direction, and the screw shaft is provided with an inclined shaft. A low insertion force connector is used in which a slider having a cam groove is engaged with the slider so as to be able to move up and down, and the other connector is provided with an engaging projection for the cam groove.

[0006]

By temporarily engaging the two connectors with each other and rotating the screw shaft, the slider moves on the screw shaft, pulling the engaging projection of the connector along the cam groove, and fitting the connector. Let it. The disconnection of the connector is performed by the reverse operation.

[0007]

FIG. 1 is an exploded perspective view showing a main part of a low insertion force connector according to an embodiment of the present invention. The low insertion force connector 1 includes a screw shaft 3 disposed in a vertical direction perpendicular to a connector fitting direction (a direction) in a male connector 2 and a cam groove 4 inclined with respect to the connector fitting direction. A slider 5 that engages with the screw shaft 3 so as to be able to move up and down;
And a pair of support arms 9, 9 having an engagement projection 7 for engaging the cam groove 4 of the slider 5 and projecting into the female connector 8. Is done.

The screw shaft 3 is mainly formed of a metal material, and a square screw 11 is engraved on the circumference of an intermediate portion of the shaft core 10, and the same as the square screw 11 at upper and lower ends of the shaft core 10. The annular portions 12 and 13 having diameters are provided, and the annular portions 12 and 13 and the square screw 1 are provided.
1 and a hexagonal head 16 is formed at the end of the upper annular portion 12, and the lower annular portion 13 is formed.
Is provided with a cutout groove 17 in the axial direction. An operation lever 19 having a hexagonal hole 18 is detachable from the hexagonal head 16 of the screw shaft 3.

The screw shaft 3 is inserted into a through hole 21 provided in the vertical direction at the center of the resin housing 20 of the male connector 2. An opening 23 is provided at the center of the front wall 22 of the male housing 20, and an upper wall 24 and a lower wall 2 in the opening 23 are provided.
5, a partition wall 26 having the through hole 21 formed therein.
26 are provided between the upper and lower walls 24, 25 and the partition walls 26, 26, respectively.
28 are formed. The slider 5 is housed in the hollow portion 30 between the partition walls 26, 26 while being engaged with the screw shaft 3. On both inner side walls of the hollow portion 30, a pair of guide grooves 31, 31 for the support arms 9, 9 are provided.

Also, on the upper and lower walls of the male housing 20,
Temporary locking projections 32 for the female connector 8, and permanent locking claws 33 are also provided on both side walls. A female terminal 34 is inserted into the male housing 20 from behind. The housing front wall 22 is provided with an insertion hole 36 for a mating male terminal 35 in the female connector 8.

The slider 5 is formed of a synthetic resin or the like, and has a rectangular column-shaped main body 37 having an insertion hole 38 for the screw shaft 3 penetrating therethrough and extending from the front and rear walls of the main body 37 into the insertion hole 38. A pair of upper and lower metal screwing pins 39, 39 are projected toward the outer wall of the main body 37, and a short introduction part 4a in the connector fitting direction and a movement extending obliquely upward from the introduction part 4a. A hook-shaped cam groove 4 composed of a portion 4b is engraved. In the slider 5, the screwing pin 39 is inserted through the lower cutout groove 17 of the screw shaft 3 and screwed into the square screw 11, and can be moved up and down in the hollow portion 30 of the male connector 2 by rotating the screw shaft 3. .

The bearing member 6 is formed of a synthetic resin, and has U-shaped grooves 41, 41 which can be inserted into the gaps 14, 15 of the screw shaft 3 above and below the cover plate 40 with respect to the opening 23 of the housing front wall 22. The cover plate 40 is provided with a notch 43 for inserting the support arm 9 of the female connector 8 into the cover plate 40, and the male housing 20 is provided at the tip of the bearing plate 42. Is provided.

The bearing member 6 engages the male housing 20 by fitting the bearing plate 42 into the insertion groove 28, and
2, the screw shaft 3 is rotatably supported. Then, the support arm 9 of the male connector 8 is inserted through the notch 43 of the support member 6, and the roller-shaped engagement protrusion 7 provided inside the arm tip is provided.
Into the cam groove 4a of the slider 5. The support arm 9 is integrally protruded from the inner wall of the female housing 44 and can enter the male connector 2 along the guide groove 31 of the male housing 20. On the upper and lower walls of the female housing 8, a notch 45 for escape with respect to the screw shaft 3 and the male housing 20 are provided.
And a long hole-shaped engaging hole 46 for the temporary locking projection 32, and an engaging hole 47 for the permanent locking claw 33 is provided on both side walls.

FIGS. 2 to 4 show a male connector 2 and a female connector 8.
It is a longitudinal cross-sectional view which shows the fitting state in order. That is, FIG. 2 shows an unfit state, in which the screw shaft 3 is rotated so that the slider 5 is positioned at the top of the hollow portion 30. FIG.
The state in which the female connector 8 is temporarily engaged with the male connector 2 by manual operation, that is, the state in which the temporary locking projection 32 is engaged with the engagement hole 46, is shown in FIG.
Enters the introduction portion 4a of the cam groove 4 of the slider 5,
It is located at the entrance of the inclined moving part 4b.

By rotating the operation lever 19 to rotate the screw shaft 3 from this state, the slider 5 is
And the engagement protrusion 7 of the female connector 8 is
Progress gradually along. Then, the female connector 8 is fitted so as to be drawn to the male connector 2. FIG. 4 shows the fitted state.

FIG. 5 shows an example in which the low insertion force connector according to the present invention is applied to a flat circuit body for a vehicle. In the flat circuit body 48, a plurality of relay boards 50 are provided at important points of a flat wire harness 49, a male connector 2 'similar to the above is provided on the surface of the board 50, and an external electric wire is connected to the male connector 2'. A similar female connector 8 'in which a wire 51 is press-wired is fitted.

The male connector 2 'has an internal female terminal (not shown) connected to a flat harness 49, and the female connector 8' has a press contact terminal 53 integral with the male terminal 52.
The electric wire 51 is press-fitted to the press-contact terminal 53, and the connectors 2 ', 8' are fitted by operating the lever 19 'to connect the male and female terminals. Since the lever 19 ′ is located at the upper end of the relay board 50, the flat harness 49 and the electric components 54 such as the CPU on the external electric wire 51 or the female connector 8 ′ are provided.
Can be easily connected even in a narrow space such as an instrument panel.

[0018]

As described above, according to the present invention, the screw shaft is provided orthogonal to the connector fitting direction, and the connector can be fitted by rotating the screw shaft at the side end of the connector. Therefore, the connector is made compact in the fitting direction, and the assembling and fitting operations in a narrow space are facilitated.

[Brief description of the drawings]

FIG. 1 is a cutaway exploded perspective view of a main part showing an embodiment of a low insertion force connector according to the present invention.

FIG. 2 is a longitudinal sectional view showing a state where the connector is fitted.

FIG. 3 is a longitudinal sectional view showing a temporary engagement state of the connector.

FIG. 4 is a vertical cross-sectional view showing a fitted state.

FIG. 5 is an exploded perspective view showing a flat circuit body to which a low insertion force connector is applied.

FIG. 6 is an exploded perspective view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Low insertion force connector 2 Male connector 3 Screw shaft 4 Cam groove 5 Slider 7 Engagement projection 8 Female connector

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-1-151181 (JP, A) JP-A-3-274684 (JP, A) JP-A-4-160775 (JP, A) 875 (JP, U) Japanese Utility Model Hei 3-74483 (JP, U) Japanese Utility Model Showa 60-131984 (JP, U) Japanese Utility Model Utility Model 5-90844 (JP, U) Japanese Utility Model Utility Model 4-10977 (JP, U) (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/56-13/72 H01R 24/18

Claims (1)

(57) [Claims] In one connector, a screw shaft is provided rotatably perpendicular to the connector fitting direction, and a slider having an inclined cam groove is engaged with the screw shaft so as to be able to move up and down. A low insertion force connector, wherein the connector is provided with an engagement projection for the cam groove.