JP3087620B2 - ID 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 crimping connector for connecting electric wires by crimping.

[0002]

2. Description of the Related Art A conventional press-connecting connector has a structure shown in FIG. The connector housing 1 is provided with a press-contact blade 2 capable of press-contacting the electric wire W at a central position in the length direction (left-right direction in the drawing) of the electric wire W, and is placed on the upper edge of the press-contact blade 2. Temporary holding portions 3 for temporarily holding the electric wire W are provided at both sides of the press contact blade 2 in the length direction of the electric wire W. Also, this connector housing 1
The cover 4, which is assembled so as to cover from above, is formed with a pressing portion 5 capable of pressing the temporarily held electric wire W from above, and when the cover 4 is assembled to the connector housing 1, the cover 4 shown in FIG. As shown in the figure, the electric wire W is pushed down by the pressing portion 5 to bring the core wire Wa into contact with the press contact blade 2.

In such a press-connecting connector, the cover 4
In a state where the wire W is pressed against the wire W
Means are provided for restricting the lengthwise displacement and detachment. This is achieved by providing receiving portions 6 and 6 between the press-contact blade 2 of the connector housing 1 and the temporary holding portions 3 and 3, and inverting the inverted triangular shape on the back surface of the cover 4 corresponding to the receiving portions 6 and 6. The protrusions 7, 7 having a shape are formed, and the movement of the wire W in the length direction is restricted by deforming the wire W between the receiving portion 6 and the protrusion 7 so as to crush the wire. It is.

[0004]

In the conventional press-connecting connector having the above-described movement restricting means, the receiving portion 6 and the projecting portion 7 are provided between the press-connecting blade 2 and the two temporary holding portions 3. , The size of the connector housing 1 and the cover 4 in the length direction of the electric wire W becomes large, and there is a problem that the whole connector becomes large.

The present invention has been made in view of the above circumstances, and has as its object to reduce the overall size in the length direction of an electric wire.

[0006]

According to a first aspect of the present invention, there is provided a connector housing having a press contact blade capable of pressing an electric wire, and a cover attached to the connector housing so as to cover the electric wire. The connector housing has an engagement slope at the tip, a holding member capable of holding the electric wire while elastically expanding and displacing is provided, and the cover has a pushing portion having an engagement slope at the tip. Provided, said
With the assembly into the connector housing cover, before
The inclination of the engagement slope of the pressing portion and the engagement slope of the holding member
The present invention is characterized in that the pushing portion is configured to forcibly displace the holding member in the closing direction.

According to a second aspect of the present invention, in the first aspect of the present invention, the holding members are arranged at both sides of the plurality of parallel electric wire rows and at each position between the adjacent electric wires, and the holding member is located between the electric wires. The member is characterized in that it has a configuration in which a slit into which the pushing portion can be fitted is formed.

[0008]

According to the first aspect of the present invention, the electric wire is temporarily held by elastically holding the electric wire while the holding member is expanded and displaced. When the cover is assembled to the connector housing from this state, the holding member is forcibly displaced in the closing direction by the pressing portion, and the wire is held in the movement restricted state.

According to the second aspect of the present invention, the holding member positioned between the adjacent electric wires can be expanded and displaced by the slit. When the cover is assembled, the holding member is closed and displaced by fitting the pushing portion into the slit. I do.

[0010]

According to the first and second aspects of the present invention,
Since the temporary holding of the wire before the wire welding and the movement regulation of the wire after the wire welding are performed by the common holding member, the size is smaller than the case where the temporary holding and the movement regulation are performed using dedicated members provided separately. Can be achieved.

[0011]

【Example】

<Embodiment 1> Hereinafter, Embodiment 1 embodying the present invention will be described with reference to FIG.
This will be described with reference to FIGS. The press-connecting connector according to the present embodiment includes a connector housing 11 and a cover 31, and is configured to press-connect two electric wires W.

The connector housing 11 is made of resin, and a pair of side walls 13, 13 rises from both left and right edges of a substantially rectangular bottom plate 12, and mounting recesses 14 provided on the inner wall surfaces of the both side walls 13, 13. , 14 are fitted with press-contact blades 15 by press-fitting. The press-contact blade 15 is made of a conductive metal material, and has a receiving groove 1 for turning the axis in the front-rear direction and waiting for two electric wires W, W arranged side by side from below.
6 are arranged in front, rear, left and right. Therefore, two receiving grooves 16, 16 are arranged at the front and rear positions for one electric wire W and wait. When the electric wire W is inserted into the receiving groove 16, the resin coating Wb of the electric wire W is cut and the core wire Wa comes into contact with the press-contact blade 15 so as to be electrically conductive. The opening edge at the upper end of the receiving groove 16 is inclined so as to expand upward, and before the cover 31 is assembled to the connector housing 11, the electric wire W is placed on the inclined portion 17 and will be described later. It is temporarily held by the holding unit 20.

A pair of front and rear falling restricting portions 18 are formed from the bottom plate 12 of the connector housing 11 in order to prevent the portion between the receiving grooves 16 adjacent to each other from falling and deforming in the front and rear direction. Have been. Lock projections 19 for locking the cover 31 in the assembled state are formed on both left and right side surfaces of the bottom plate 12.

At both front and rear edges of the bottom plate 12, holding portions 20 are provided. The holding portion 20 includes a pair of elastic holding pieces (holding members) 21 and 21 that stand up from both left and right positions of a front edge or a rear edge of the bottom plate 12.
And a fixed holding piece 22 rising from an intermediate position between the two elastic holding pieces 21 and 21.

The elastic holding piece 21 can be elastically bent so as to fall outward. Each elastic holding piece 21
A projection 23 projecting inward is formed at the upper end of the projection 23. The lower surface of the projection 23 is a horizontal locking surface 24, and the upper surface of the projection 23 is a guiding slope inclined inward downward. 25. Further, the elastic holding piece 2
The outer side of the upper end of 1 is an engagement slope 26 inclined outward and downward.

On the other hand, a pair of projections 28, 28 facing the projection 23 of the elastic holding piece 21 at the same height are formed at the upper end of the fixed holding piece 22. The projection 28 also has a horizontal locking surface 29 and a guiding slope 30 similar to the projection 23 of the elastic holding piece 21.

The distance between the left and right side edges of the elastic holding piece 21 and the side edge of the elastic holding piece 21 opposed thereto is set to be smaller than the outer diameter of the electric wire W. The electric wire W is provided between the fixed holding piece 22 and the elastic holding piece 21.
Is inserted, the wire W hardly deforms due to the rigidity of the wire W, and the elastic holding piece 21 is elastically bent outward.

The cover 31 assembled to the connector housing 11 is made of a material having high rigidity and hardly deformable, and has a pair of side walls projecting downward from both left and right side edges of the top plate 32 (a pressing force which is a component of the present invention). Part) 33, 33 are provided. A pressing portion 34 on the top plate 32 of the cover 31, which is capable of pushing down the electric wire W and fitting the electric wire W to the press-contact blade 15 with the attachment to the connector housing 11.
Are formed. In addition, engagement slopes 35, 35, which extend downward and outward, are provided on lower end edges of both side walls 33, 33.
Are formed. Further, a lock groove 36 capable of engaging with the lock projection 19 of the connector housing 11 is formed at a center position in the front-rear direction of the engagement slope 35.

Next, the operation of the present embodiment will be described.
At the time of assembling, first, the two electric wires W are placed on the inclined surface 17 of the press contact blade 15 and pushed between the elastic holding pieces 21 and 21 and the fixed holding piece 22. At this time, both holding pieces 2
Since the guide slopes 25 and 30 are formed on the first and second 22, the wire W can be easily pushed. In this state, the elastic holding piece 21 is elastically bent outward as shown in FIG. 3, and the electric wire W is sandwiched between the two holding pieces 21 and 22 by the elastic restoring force of the elastic holding piece 21. Thus, the electric wire W is temporarily held so as not to easily come off from the position on the inclined surface 17 of the press contact blade 15. In addition, even if the electric wire W slides upward due to the holding force, the two holding pieces 21 and 22
Since the locking surfaces 24 and 29 are formed on the, they do not come off between the sandwiching pieces 21 and 22.

Next, the cover 31 is assembled to the connector housing 11 from this state. Along with this assembling, the side walls 33, 33 of the cover 31 engage with the elastic holding pieces 21, 21 and forcibly return to the inside by the dimension S shown in FIG. During this time, the cover 31 and the elastic holding piece 21 are smoothly engaged with each other by the inclination of the engagement slope 26 of the connector housing 11 and the engagement slope 35 of the cover 31. When the elastic holding piece 21 is forcibly displaced inward, the wire W is sandwiched between the elastic holding piece 21 and the fixed holding piece 22 in a deformed state so as to be crushed (see FIG. 4). . As described above, since the electric wire W is sandwiched so strongly that it can be deformed, there is no possibility that the electric wire W will move even if an axial pulling force or an upward pulling force acts.

As described above, in the present embodiment, the temporary holding of the wire W before the pressure welding and the movement restriction of the wire W after the pressure welding are performed by the common holding unit 20. Therefore, the dimension of the connector housing 11 and the cover in the front-rear direction is shorter than those in which a dedicated member for temporary holding and a dedicated member for movement control are separately provided in the length direction of the electric wire W. , And miniaturization is achieved.

<Embodiment 2> Next, Embodiment 2 of the present invention will be described with reference to FIG. The press-connecting connector of the present embodiment presses one electric wire. The holding portion 42 provided on the connector housing 41 is composed of only a pair of left and right elastic holding pieces (holding members which are constituent elements of the present invention) 43, 43, and corresponds to the fixed holding piece 22 in the press-connecting connector of the first embodiment. It does not have any members to perform. The other configuration is the same as that of the first embodiment except for the left and right dimensions. Therefore, the illustrated portions are denoted by the same reference numerals, and description thereof will be omitted. The cover is the same as that of the first embodiment except for the size in the left-right direction, and thus illustration and description are omitted.

In the press-connecting connector of this embodiment, when the electric wire (not shown) is temporarily held by the holding portion 42, both the left and right elastic holding pieces 43, 43 are elastically deformed outward. When the cover is assembled to the connector housing 41, the electric wire is pressed against a pressure contact blade (not shown), and the left and right elastic holding pieces 43, 43 are both forcibly returned to the inside and deformed. And is held in the movement restricted state.

In this embodiment, since both left and right elastic holding pieces 43 are elastically deformed to hold one electric wire, only one elastic holding piece 21 is elastically deformed as in the first embodiment. Compared with the case, the amount of bending of the elastic holding piece can be reduced to half.

Third Embodiment Next, a third embodiment of the present invention will be described with reference to FIG. The press-connecting connector according to the present embodiment press-connects three or more electric wires W in a parallel state. Holder 52 provided on connector housing 51
Are a pair of elastic holding pieces (holding members, which are constituent elements of the present invention) 53 formed at both end positions of the parallel electric wire row, and intermediate holding pieces (the present invention) formed at respective positions between adjacent electric wires W. Holding member) 54 which is a component of the above. A slit 55 is formed in each of the intermediate holding pieces 54 by notching downward from the upper end thereof, and the slits 55 divide each of the intermediate holding pieces 54 into a pair of left and right elastic holding pieces 56, 56. The intermediate holding piece 54 can be elastically deformed so as to narrow the slit 55. As in the first embodiment, the elastic holding pieces 53 and the elastic holding pieces 56 have projections 57 having locking surfaces 58 and 61 and guide slopes 59 and 62, respectively.
60 are formed. The upper end of the slit 55 has a guide slope 6 inclined so as to expand upward.
3 are formed.

The cover 64 is made of the same material as in the first embodiment.
Side walls (pressing portions, which are constituent elements of the present invention) 66, 66 are formed on both side edges of the top plate 65, and a pressing portion 67 for fitting the electric wire W to a press-contact blade (not shown) is provided. Furthermore, a plurality of leg portions (push-moving portions, which are constituent elements of the present invention) 68 that can be fitted into the respective slits 55 of the connector housing 51 are formed so as to protrude downward. At the upper end of the leg 68, a slope 69 that can be aligned with the guide slope 63 of the slit 55 is formed.

In the press-connecting connector of the present embodiment, the wires W located at both ends of the plurality of wires W are temporarily held by being sandwiched between the elastic holding pieces 53 and the corresponding elastic holding pieces 56. The other electric wires W are temporarily held by being sandwiched between the corresponding elastic holding pieces 56, 56. At this time, the elastic holding pieces 53 and the elastic holding pieces 56 are elastically deformed so as to spread due to the rigidity of the electric wire W.

When the cover 64 is assembled to the connector housing 51 from this state, the side wall 66 forcibly returns and deforms the elastic holding piece 53, and the leg 68 is
5 and the elastic holding piece 56 is returned and deformed. Thus, the electric wire W is strongly pinched so as to be deformed so as to be crushed, and is strongly held so as not to move easily.
In addition, since the guide slope 63 is formed in the slit 55, when the leg 68 is fitted into the slit 55, a smooth fitting operation is performed without causing a caught or the like.

<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) In the first embodiment, since the number of the electric wires W to be pressed is two, the fixed holding piece 22 located at the center is not elastically deformed, but is fixed as in the third embodiment. A configuration may be adopted in which a slit is formed in the holding piece so as to be elastically deformable, and a leg that fits into the slit is provided on the cover.

(2) In the second embodiment, the holding portion 42 is constituted by the pair of elastic holding pieces 43, 43, both of which can be elastically deformed.
The other may be configured as a holding piece that does not elastically deform.

(3) In each of the above embodiments, the electric wires are pressed at the same time as the cover is assembled. However, the present invention is also applicable to a press-connecting connector of the type in which the cover is assembled after the electric wires are pressed. Can be.

[Brief description of the drawings]

FIG. 1 is a perspective view of a separated state according to a first embodiment of the present invention.

FIG. 2 is a front view of the separated state according to the first embodiment.

FIG. 3 is a front view of the first embodiment in the middle of assembly.

FIG. 4 is a front view showing a state in which assembly of the first embodiment is completed.

FIG. 5 is a plan view showing a state where the electric wire of the first embodiment is temporarily held.

FIG. 6 is a partially cutaway plan view of an assembled state according to the first embodiment.

FIG. 7 is a front view of the connector housing according to the second embodiment.

FIG. 8 is a partial front view of the separated state according to the third embodiment.

FIG. 9 is a sectional view of a conventional example in a separated state.

FIG. 10 is a sectional view of a conventional example in an assembled state.

[Explanation of symbols]

 W: electric wire 11: connector housing 15: press-contact blade 21: elastic holding piece (holding member) 31: cover 33: side wall (pressing portion)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 4/24 H01R 13/56-13/58

Claims (2)

(57) [Claims] 1. A connector housing having a press-contact blade capable of press-contacting an electric wire, and a cover assembled to the connector housing so as to cover the electric wire, wherein the connector housing has an engagement slope at a tip end. Have
A holding member capable of holding the electric wire while elastically expanding and displacing is provided, and the cover is provided with a pushing portion having an engagement slope at a tip end.
In accordance with the assembly of the cover to the connector housing, the engagement slope of the pressing portion and the engagement slope of the holding member are
Insulation displacement connector, characterized in that the pressing portion is configured to forcibly displaced in a direction to close the holding member by the inclined. 2. A holding member is arranged at both sides of a plurality of parallel electric wire rows and at each position between adjacent electric wires, and a pushing portion can be fitted to the holding member located between the electric wires. The press-connecting connector according to claim 1, wherein a slit is formed.