JP2594381Y2 - Crimp joint 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 press-connecting joint connector, and more particularly, to a press-connecting joint connector having a temporary locking portion for temporarily fixing a surplus portion of an electric wire to be pressed against a press-connecting terminal to a holder. .

[0002]

2. Description of the Related Art In general, a press-fit joint connector of this kind can be connected in two or more circuits at the same time, and is particularly used as a terminal for a weak current for wiring such as a wire harness of an automobile. is there. As such a press-connecting joint connector, the present applicant has proposed a press-connecting joint connector capable of reliably temporarily fixing even electric wires of different sizes (Japanese Utility Model Application No. 4-53595).

In such a configuration, as shown in FIG. 6, a cover 110 of the press-fit joint connector is formed in a U-shaped cross section, and the lower surfaces of both side plates 110b and 110c of the cover 110 allow the outer side of each temporary locking portion 122 to be formed. Then, the electric wire 140
Is pressed down.

[0004]

However, in the configuration of FIG. 6, the side plate 110b is simply provided on the cover 110, so that the strength of the side plate 110b cannot be sufficiently secured. For this reason, when the side plate 110b receives the force acting on the extra-length portion 140a of the electric wire 140 at the time of pressure welding, the side plate 110b is deformed in a direction in which the side plate 110b comes off the There is a problem that the deformed side plate 110b may be damaged.

[0005] Further, even after the pressure welding, the side plate 110b expands due to the habit of the electric wire, and there is also a problem that the electric wire cannot be securely fixed. In order to solve the above-mentioned problems, it is conceivable to increase the thickness of the cover 110. In this case, however, there is a problem that the entire press-connecting joint connector becomes large, and moreover, only an extra material is required. However, there was a problem that the cost was increased.

The present invention has been made in view of the above-mentioned problems, and has as its object to provide a press-fit joint connector in which an electric wire can be securely held by a holder by a cover.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a press-fitting joint connector according to the present invention comprises a main body section for partitioning a pressing space into which a middle portion of an electric wire is pushed from above, and both side sections of the main body section. Is provided, includes a temporary fixing portion for temporarily fixing the extra length of the wire through the wire introduction space open at the upper end, and a holder that can be locked in a state in which the wire to be pressed against the pushing space, A press-contact terminal that defines an electric wire press-fitting groove that sandwiches an intermediate portion of the electric wire that is held by the holder and that is pushed into the press-in space, a top plate portion facing the upper portion of the holder, and formed on both sides of the top plate portion; A side plate portion capable of pressing the extra length portion downward outside the temporary fixing portion, and is integrally formed on the lower surface of the top plate portion of the cover and the inner surface of the side plate portion,
In addition, it is characterized in that it includes a reinforcing portion extending along the longitudinal direction of the electric wire temporarily fixed in a state capable of being introduced into the introduction space, and a cover attachable to the holder.

[0008]

According to the press-fit joint connector of the present invention, the reinforcing portion integrally formed on the lower surface of the top plate portion of the cover and the inner surface of the side plate portion has a longitudinal direction of the electric wire temporarily fixed so that it can be introduced into the introduction space. Therefore, the force for opening the side plate of the cover in the pressing process is absorbed by the reinforcing portion. Further, by introducing the reinforcing portion into the introduction space, the extra length portion of the electric wire is pushed into the holder from the opening portion of the temporary locking portion.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a partially exploded perspective view showing a main part of a press-fit joint connector according to an embodiment of the present invention, FIG. 2 is a schematic perspective view of the press-fit joint connector, and FIG. FIG. 4 is a schematic cross-sectional view illustrating a main part of a temporary locking portion of the press-contact joint connector, and FIG. 5 is a transverse cross-sectional view of the press-connect joint connector.

First, referring to FIGS. 1 and 2, a press-connecting joint connector 10 according to the present embodiment includes a cover 11 and a holder 12 made of resin and a press-connecting terminal 13 made of a conductive material. The cover 11 is a molded product having a U-shaped cross section and a substantially rectangular top plate portion 11a.
And a side plate 11b extending to the longitudinal side of the top plate 11a, and an end plate 11c extending to the side plate 11b and the top plate 11a.

On the inner surface of the top plate 11a, there are provided a large number of pressing pieces 11d hanging downward. Pressing piece 11d
Is for pushing the middle portion 14b of the electric wire 14 into the press contact terminal 13 in the electric wire 14 pressure welding step described later. As shown in FIG. 3, each pressing piece 11d is formed with a groove d1 for avoiding interference with a blade 13a of a press-contact terminal 13 described later,
4, a pressing surface d2 is formed along the arc.

Each of the side plates 11b is connected to the top plate 11a.
A concave portion 11e formed along the longitudinal direction is provided at the lower portion. Indents 11f are formed in the recess 11e at predetermined intervals in the longitudinal direction. The indent 11f is for pushing the electric wire 14 downward. The end plate 11c is integrally provided with a projection 11g that hangs down from the center and a locking projection 11h.

Further, in this embodiment, the top plate 11a
A reinforcing rib 11R as a reinforcing portion is integrally formed on the lower surface of the base plate and the inner surface of the side plate portion 11b. Reinforcing ribs 11R extend from both sides of the pressing piece 11d, respectively.
It extends along the longitudinal direction of the electric wire 14 temporarily fixed in a state where it can be introduced into an introduction space D2 described later. As shown in FIG. 5, each reinforcing rib 11R is provided with a pressing piece 11d.
Inclined surface R1 inclined downward from the side toward the side plate portion 11b
The portion extending from the middle portion 14b of the electric wire 14 to the outside of the holder 12 can be pushed toward the holder 12 by the inclined surface R1.

Referring to FIGS. 1 and 2, the holder 12 has a substantially rectangular main body portion 12a facing the top plate portion 11a of the cover 11 and a longitudinal direction of the main body portion 12a. It is integrally provided with two pinching piece groups 12b and 12c arranged in parallel. Each of the holding piece groups 12b and 12c is provided in a large number in a row in the longitudinal direction, and is provided with a temporary locking portion 10 for temporarily fixing an electric wire 14 to be pressed against the press contact terminal 13.
2.

As shown in FIG. 1, each of the holding piece groups 12b and 12c has a holding space D1 for holding the electric wire 14 therebetween and a holding piece 102a separating the holding space D1 in the longitudinal direction of the main body 12a. Have been. Further, each holding piece 102b of one holding piece group 12b and each holding piece 102c of another holding piece group 12c face each other in the width direction of the main body 12a.

Each holding piece 102a is a columnar body having a rectangular cross section, and a generally arrowhead-shaped projection 102d is formed at the tip of each holding piece 102a. And one protrusion 10
2d and another protrusion 10 adjacent to this one protrusion 102d.
An introduction space D2 for introducing the electric wire 14 into the holding space D1 is defined between the space D2 and the space 2d. As shown in FIG. 4, an inclined surface 22d is formed above each protrusion 102d, and the electric wire 14 is guided into the introduction space D2 by the inclined surface 22d.

The reinforcing ribs 11 formed on the cover 11
R is set to a size that can be fitted into the introduction space D2 formed between the projections 102d. With reference to FIG. 2, the main body 12a has a mounting projection 12d in which the press-contact terminal 13 is seated at the distal end, and a mounting projection 12d.
Sides (sides in the direction intersecting the longitudinal direction of the main body 12a)
And holding projections 12e and 12f for holding the press contact terminals 13 with the mounting projections 12d and the holding projections 12d.
e, 12f are intermediate portions 14b of the electric wire 14 in the longitudinal direction.
Is pushed up in a state where a pushing space D3 for pushing is pressed.

The pushing space D3 is defined so as to face the pressing piece 11d of the cover 11 in the vertical direction.
At the same time, the pressing space D3 is
It communicates in the width direction with the holding space D1 defined between the holding pieces 102a, 102a of b and 12c. In FIG. 2, 12h is a jaw. The jaw portion 12h has a receiving surface h1 for receiving the lower surface of the concave portion 11e formed in each side plate portion 11b of the cover 11, and a locking portion h2 that is continuous with the receiving surface h1 and locks to the outer surface of the side plate portion 11b. The receiving surface h1 is used to position the cover 11 in the up-down direction, and the locking portion h2 prevents the side plate portion 11b from expanding when pressurized.

As shown in FIG. 1, the press contact terminal 13 is
It is formed of a conductive plate material provided with a blade 13a that enters the pushing space D3. The blade 13a is
This is for holding the core wire of the electric wire 14 in a state where the covering portion of the electric wire 14 is incised and for electrically connecting the press contact terminal 13 and the electric wire 14.
3a and another blade 13a adjacent thereto,
The wire introduction groove 13b is defined.

Next, the operation of this embodiment will be described.
According to the above configuration, as shown in FIGS. 1 and 2, the electric wire 14 is temporarily fixed to the holder 12 in advance, and then the cover 11 is
Is mounted on the holder 12 and the electric wire 14 is sandwiched between the two, and the cover 11 is integrally attached to the holder 12 while covering the entire holder 12 as shown in FIG. At this time, the pressing piece 11d formed on the top plate portion 11a of the cover 11 presses the electric wire 14 in the pressing space D3 downward. At the same time, the indent 11f of the cover 11 presses both ends of the electric wire 14 downward. Further, the reinforcing rib 11 </ b> R pushes a portion extending from the middle portion 14 b of the electric wire 14 to the outside of the holder 12 toward the holder 12.

When the cover 11 is pressurized by a pressing device or the like in this state, the pressing piece 11d of the cover 11 falls down impulsively within a range where the cover 11 is restricted by the flange 12h (see FIG. 2). The covering portion of the electric wire 14 in the space D3 is cut by the blade 13a, and the blade 13a comes into contact with the core wire of the electric wire 14, whereby the press contact terminal 13 and the electric wire 14 are electrically connected.

In the above pressing step, when the impact pressing force of the pressing piece 11d is transmitted to the middle portion 14b of the electric wire 14, tension is generated in the electric wire 14, and the cover 11 is moved upward or sideward.
Is applied to deform the. However, in the press-fit joint connector 10 of the present embodiment, the cover 11
The reinforcement rib 11R integrally formed on the lower surface of the top plate 11a and the inner surface of the side plate 11b extends along the longitudinal direction of the wire 14 temporarily fixed so as to be able to be introduced into the introduction space D2. The force for opening the side plate portion 11b of the eleventh portion is absorbed by the reinforcing rib 11R. Therefore,
According to the present embodiment, the deformation of the cover 11 can be reliably prevented.

In this embodiment, the pressing piece 11d
Pushes the middle portion 14b of the wire 14 into the wire press-fit groove 13b of the press contact terminal 13, the reinforcing rib 11R
2 is introduced. Therefore, according to the present embodiment, it is not necessary to provide an extra space for providing the reinforcing rib 11R, so that it is possible to prevent the press-connecting connector 10 from being enlarged.

In addition, when the reinforcing rib 11R is introduced into the introduction space D2, the extra length portion 14a of the electric wire 14 is pushed into the holder 12 from the opening of the temporary locking portion 102, that is, from the introduction space D2. Therefore, in the pressure welding step, the upward force against the tension of the electric wire 14 is applied to the reinforcing rib 1.
As a result, the electric wire 14 can be more firmly held in the holder 12.

Therefore, according to the present embodiment, it is possible to provide the press-connecting joint connector 10 in which the cover 11 can securely hold the electric wire 14 against the holder 12. It should be noted that the above-described embodiments are merely examples of preferred embodiments of the present invention, and it goes without saying that various design changes can be made without departing from the spirit of the present invention.

[0026]

As described above, according to the press-fit joint connector of the present invention, since the force for opening the side plate of the cover is absorbed by the reinforcing portion, the deformation of the cover can be reliably prevented. it can. Further, when the pressing piece pushes the middle part of the wire into the wire press-fitting groove of the press-connecting terminal, the reinforcing portion is introduced into the introduction space, so there is no need to provide an extra space for providing the reinforcing portion. The joint connector can be prevented from increasing in size.

In addition, since the reinforcement portion is introduced into the introduction space, the extra length of the wire is pushed into the holder from the opening of the temporary locking portion. As a result, the reinforcing portion can receive an upward force against the wire, and it becomes easier to more firmly hold the electric wire in the holder. Therefore, according to the present invention, it is possible to provide a press-fit joint connector in which the cover can securely hold the electric wire against the holder.

[Brief description of the drawings]

FIG. 1 is a partially exploded perspective view showing a main part of a press-fit joint connector according to an embodiment of the present invention.

FIG. 2 is a schematic perspective view of the press-connecting connector.

FIG. 3 is a bottom view of a cover of the press-connecting connector.

FIG. 4 is a schematic sectional view showing a main part of a temporary locking portion of the press-fit joint connector.

FIG. 5 is a cross-sectional view of the press-fit joint connector.

FIG. 6 is a cross-sectional view of the press-connecting connector in a development process of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Press-fitting joint connector 11 Cover 11R Reinforcement rib (reinforcing part) 12 Holder 13 Press-fitting terminal 14 Electric wire 14a Extra length 14b Midway

Claims (1)

(57) [Scope of request for utility model registration] 1. A main body section which partitions a pushing space into which a middle part of an electric wire is pushed from above, and an extra length portion of the electric wire which is provided on both sides of the main body section and which is open at an upper end. A holder including a temporary fixing portion for temporarily fixing, and a holder capable of locking an electric wire to be pressed against the pushing space, and an electric wire press-fit for holding a middle portion of the electric wire carried by the holder and pushed into the pushing space; A pressure contact terminal for defining a groove, a top plate portion facing the upper portion of the holder, a side plate portion formed on both sides of the top plate portion and capable of pressing a surplus portion of the electric wire downward outside the temporary fixing portion, and The cover includes a reinforcing portion integrally formed on the lower surface of the top plate portion and the inner surface of the side plate portion and extending along the longitudinal direction of the wire temporarily fixed in a state capable of being introduced into the introduction space, and can be attached to the holder. Pressure characterized by having a cover Joint connector.