JPH08124612A - Multi-stage connector - Google Patents

Abstract

PURPOSE: To achieve simplification of connection work and reduction of costs, and to make press contact-holding of an electric wire reliable without falling, by a multiple connector provided with contact and connecting parts by U-groove press contact terminals into a plurality of stage shapes. CONSTITUTION: Engaging recessed grooves 15 and locking protrusions 16 are formed on both ends of a connector main body 1. Engaging projecting lines 25 provided on both ends of a second presser plate 3 for press-contact-holding an electric wire by the lower stage surface 8 of the connector main body 1 are engaged with engaging recessed grooves 15. Locking parts 22 and locking holes 23 are formed on leg flaps 21 suspended downward from both ends of a first presser plate 2 for press-contact-holding the electric wire by the upper stage surface 7 of the connector main body 1, and having spring properties. The electric wire is interposed between upper and lower both stage surfaces 7, 8, the first presser plate 2 is pressed, and the engaging projecting line 25 upper surfaces are pressed by the locking parts 22, so as to fit the engaging projecting lines 25 and the locking protrusions 16 into the engaging holes 23, and the engaging protrusion 16 lower surfaces are locked and united, and the electric wire is brought in press-contact and put in connection.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multistage connector which enables high-density wiring.

[0002]

2. Description of the Related Art Heretofore, as a connector of this type, a plurality of U-groove pressure-contact terminals are embedded and held on the upper surface of the connector body at regular intervals in the width direction. It is known that an electric wire is formed on each step surface of the connector body, and is pressed and held by a plurality of holding plates.

According to the above-mentioned multistage connector, electric wires are connected by the following procedure. First, after the electric wire is pressure-bonded to the lower surface of the connector main body, the second pressing plate is placed on the lower surface and the electric wire, and the second pressing plate is united with the connector main body by pushing this, and the electric wire is attached to the second pressing plate. Then, the electric wire is pressure-bonded to the upper surface of the connector body, and then the first pressing plate is placed on the upper surface, the electric wire and the second pressing plate, and the first pressing plate is attached to the connector body by pushing it. It is to be united.

[0004]

However, in the conventional multi-stage connector described above, there are a plurality of press-connecting and connecting portions of the connector body, and the press-connecting jigs are sequentially and individually arranged from the lower surface to the upper surface. Therefore, the number of pressure welding and wiring work processes is increased, which requires more time, and the wiring cost is high. It had to be prepared, and the cost was high.

The present invention has been made in view of the above problems of the prior art. A plurality of pressure contacts are formed on the upper surface of the connector body in a stepwise manner, and a presser plate is provided at the connecting portion with an electric wire interposed. By placing it on top and pressing the topmost step surface and pressing the holding plate at the connection part against the connector body, it enables pressure contact and connection at each step surface, and also securely holds the wire pressure contact. An object is to provide a multi-stage connector adapted to be obtained.

[0006]

In order to achieve the above object, a multi-stage connector of the present invention comprises a connector body having a plurality of step-like pressure contact and connection portions formed by U-groove pressure contact terminals on the upper surface, and a connector body of the connector body. For pressing and connecting the electric wire on the lower surface, the electric wire is interposed on the lower surface, and the electric wire is pressed and connected on the upper surface of the connector main body with the second pressing plate connected to the connector body. Therefore, the second pressing plate and the first pressing plate coupled to the connector body are provided with the electric wire interposed on the upper surface, and the engaging protrusions are provided at both ends in the width direction of the second pressing plate. On the other hand, at both ends in the width direction of the connector main body, the engaging protrusions are provided for fitting the second pressing plate to the connector main body with the electric wire interposed on the lower surface. Engaging groove of the upward opening for engaging the base of A second pressing plate is fitted to the connector main body, and a locking projection for fixing the first pressing plate to the connector main body is formed on the upper surface with the electric wire interposed therebetween. At both ends in the width direction of the holding plate, the connector body and leg pieces having a spring property, which are externally mounted on both sides of the second holding plate, are vertically installed, and the lower surface and the second holding plate and the upper holding plate are provided. By interposing each electric wire between the surface and the first pressing plate and pushing the first pressing plate into the connector main body, the electric wire is pressed against and connected to each step surface, with respect to the connector main body. A locking portion for locking the upper end of the base of the engaging projection for fixing the first and second pressing plates and a locking hole for locking the lower end of the locking projection are formed in the leg piece. It is characterized by being

[0007]

This embodiment shows an example in which the U-groove pressure contact terminal on the upper surface of the connector main body is used for pressure contact and the connection portion is formed in two steps of the upper surface and the lower surface, and the connection is performed as follows.

[0008] With the connector main body facing upward, the electric wire is sandwiched in the wire-arrangement and wire-holding portion of the lower surface so as to arrange the wire, and the end portion is brought into close proximity to the pressure-contact portion of the U-groove pressure-contact terminal. Then, if it is interposed in the lower surface, by engaging the bases of the engaging projections provided on both sides of the second pressing plate with the engaging concave grooves provided at both ends of the connector body, The second
Fit the holding plate to the connector body and hold it on the wire.

Next, the electric wire is sandwiched in the electric wire holding portion of the second pressing plate to arrange the electric wire, and the end portion is brought close to the pressure contact portion of the U-groove pressure contact terminal on the upper surface so as to pass the electric wire. When interposing it on the upper surface, the first pressing plate is attached to the second pressing plate and the connector main body so that both leg pieces which are vertically hung downwardly on both sides of the first pressing plate are mounted on the second pressing plate and the connector body. Push it into the holding plate and connector body.

The two leg pieces are integrally formed with an elastic insulating material such as plastic with the first pressing plate so as to have a spring property, and at the same time with respect to both side surfaces of the connector body and the second pressing plate. The lower end surface is formed to be an inclined surface that inclines downward from the inner upper portion to the lower end outward so that they can be fitted in a close contact state. Therefore, the first holding plate is
When trying to fit the upper part of the holding plate, the lower ends of both leg pieces abut the upper surface of the base of the engaging projection of the second pressing plate and the locking projection of the connector body. The inclined surface at the lower end of the one piece slides on the upper surface of the engaging ridge to spread the leg piece outward against the spring property, whereby the first holding plate is pushed in and pushed to a predetermined position. Then, the engaging portion formed on the base of the leg piece engages with the upper end of the engaging projection.

When the first pressing plate is further pushed, the second pressing plate is pushed into the lower surface of the connector body by the engaging portion through the engaging ridge. As a result, the wire is clamped and connected to the pressure contact portion of the U-groove pressure contact terminal on the lower surface, and at the same time, the wire is pressure-contacted to the pressure contact portion of the U-groove pressure contact terminal on the upper surface by the first pressing plate. Will be connected.

As described above, when the electric wires are pressed and connected on the lower surface and the upper surface, the engaging holes formed in the leg pieces are aligned with the engaging ridges and the engaging projection portions, and the leg pieces are connected. Is restored by the spring property, the engaging projection and the engaging projection are fitted in the engaging hole, and the lower end of the engaging projection is engaged with the lower edge of the engaging hole, whereby the connector body The first and second presser plates are joined together, and the electric wire is held in the connected state.

That is, the upper surface of the engaging projection and the lower end of the engaging projection are respectively engaged with the engaging portion of the first pressing plate and the lower edge of the engaging hole, so that the connector body and the second pressing member are engaged. Since the plate and the connector main body and the first pressing plate are pulled toward each other, they are firmly united with each other, so that the electric wire can be loosely pressed and held.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 shows an exploded perspective view of the multi-stage connector, FIG. 2 shows a side view of the multi-stage connector in a connected state, FIG. 3 shows a vertical cross-sectional view of the multi-stage connector in a connected state, and FIG. (B) shows a connector main body in a multi-stage connector, a first holding plate, and a second holding plate, which are partially cut away to show a combined portion, and a vertical sectional view in a combined state.

As shown in FIGS. 1 to 4 (A) and (B), the multistage connector according to the present invention has a connector body 1
And a first pressing plate 2 and a second pressing plate 3. As clearly shown in FIG. 1, the connector body 1 has a plurality of U-groove press-connecting terminals 4 ... 5 ... 6 for connecting electric wires at regular intervals in the width direction (longitudinal direction) thereof. ...
They are embedded and held in three rows at regular intervals in the front-rear direction (short direction).

The upper surface of the connector body 1 is formed stepwise in the front-rear direction to form an upper step surface 7 and a lower step surface 8 having a step a in the vertical direction. , U-groove pressure contact terminals 4 ... are aligned and projected in a line, and a plurality of U-groove pressure contact terminals 5 are formed on the lower surface 8.
.. and 6 ... are aligned and projected in two rows and alternately.

In addition, the connector body 1 has a plurality of pairs for rearranging the wire and holding the electric wire in the rear portion of the upper surface 7 and the front portion of the lower surface 8 at regular intervals in the width direction. Protrusion 9
.., 10a .. are provided so as to project, thereby forming comb-shaped wire arranging and wire holding portions 9, 10.

In order to easily push in the electric wire A shown in FIGS. 2 and 3 and hold the electric wire A shown in FIGS.
The width is wider than that and the inner portion is formed to be narrower than the outer diameter of the electric wire A.

Further, the connector body 1 has side plates 11 and 11 which are higher than the upper and lower step surfaces 7 and 8 at both ends in the width direction.
Are projected upward, and projecting portions 12 and 13 are provided vertically in parallel in the front-rear direction at a constant interval L at the front end and the rear end on the outer side surfaces of the both side plates 11, 11. As a result, a guide portion 14 of a leg piece of the first pressing plate 2 described later is formed.

Engagement grooves 15 for engaging engagement protrusions, which will be described later, of the second pressing plate 3 are fitted upward at positions of the side plates 11, 11 corresponding to the lower surface 8 described above. In addition to being formed by opening, a vertically long locking projection 16 is provided on the surface of both side plates 11, 11 at a rear portion below the engaging recessed groove 15, and the locking projection 16 is provided. The upper part of the surface of the part 16 is formed into an inclined surface 16a which inclines downward from the upper end toward the lower part, and the lower end is formed into a horizontal locking surface 16b.

The first pressing plate 2 is, as shown in FIG.
The widthwise direction (longitudinal direction) and the front-rear direction (shorter direction) are formed to be substantially the same as those of the upper surface 1a of the connector body 1, and the surface facing the upper step surface 7 of the connector body 1 is As shown in FIG. 3, a plurality of protrusions 1 are arranged in the width direction at regular intervals to form a pair of two wires for aligning and holding electric wires.
.., 18a .. are aligned and projected in two rows at regular intervals in the front-rear direction (short direction), whereby comb-shaped wire arranging and wire holding portions 17, 18 are formed. Has been done. Incidentally, the groove portions (not shown) of both the wire arranging / electric wire holding portions 17, 18 have the same opening as the wire arranging / electric wire holding portions 9, 10 of the connector main body 1 and the inner portion thereof is widened. Is narrowly formed.

The first pressing plate 2 is on the surface facing the upper step surface 7, and has a plurality of recessed holes 19 that fit into the ends of the protrusions 9a ...・ 、
It is formed corresponding to the protrusions 9a ...
Between the protrusions 17a ..., 18a, a groove groove 20 for fitting the end of the U-groove pressure contact terminal 4 ... Is formed long in the width direction.

Further, the first pressing plate 2 has plate-like leg pieces 21, 21 vertically downwardly provided at both ends in the width direction of the first pressing plate 2 so as to face each other. The both leg pieces 22 and 22 are formed integrally with the first pressing plate 2 by using an insulating material having elasticity such as plastic to impart an appropriate spring property, and the width L ′ in the front-rear direction is Connector body 1
The guide portion 14 is set to be equal to that of the guide portion 14 and is formed so that the guide portion 14 can be fitted tightly without rattling. Further, the lower end of the leg piece 21 is formed on an inclined surface 21a which inclines and descends from the inner upper portion to the outer lower edge.

Further, as shown in FIGS. 1 and 4A and 4B, the first pressing plate 2 has the leg pieces 21 and 21.
A locking portion 22 for locking and pushing in the upper end of an engaging projection to be described later of the second pressing plate 3 is provided on the inner side of the base portion of the second pressing plate 3, and the both leg pieces 21 and 21 have the above A vertically long locking hole 23 for fitting the locking projection 16 of the connector body 1 with the above-mentioned engagement projection and locking the locking surface 16b at the lower end of the locking projection 16 to the lower edge 23a. Is formed through.

Also, the first pressing plate 2 is the second pressing plate 3
On the side wall on the front side facing each other, there are provided a plurality of alignment grooves 24 corresponding to the U-groove pressure contact terminals 4, ..., 5 ..., 6 ... They are formed at regular intervals in the width direction.

On the other hand, as shown in FIGS. 1 to 3, the second holding plate 3 is formed so as to be arranged between the lower step surface 8 of the connector body 1 and the first holding plate 2. At both ends in the width direction, a vertically long engagement projection 25 having a substantially rectangular cross section,
25 are hung vertically downward at a substantially right angle.
As shown in FIG. 4 (B), the base portions 25a of Nos. 5 and 25 are engaged with the engagement concave grooves 15 of the connector body 1, so that the engagement protrusions 25, 25 are made to correspond to FIGS. ),
On the outer surfaces of the side plates 11, 11 of the connector main body 1, the locking projections 16 are parallelly projected and held in a state where their side surfaces are in contact with each other, and together with the locking projections 16, the leg pieces of the first holding plate 2 are held. It is forcibly fitted into a locking hole 23 penetrating through 21. As a result, the connector body 1, the first pressing plate 2 and the second pressing plate 3
Are formed so as to be united with each other.

The second pressing plate 3 is the connector main body 1
, 27a, which form a pair of two wires for aligning and holding electric wires, are arranged on the surface facing the lower step surface 8 in two rows in front and rear at regular intervals in the width direction. It is projected,
Thereby, the wire arranging and wire holding portions 26 and 27 are formed in a comb shape.

Further, on the facing surface of the second pressing plate 3 and between the protrusions 26a ..., 27a ..., the U-groove pressure contact terminals 5 ,. The concave groove lines 28 and 29 for fitting the end portions of are formed long in the width direction.

Further, as shown in FIG. 1, the second pressing plate 3 has a plurality of protrusions 30a for aligning and holding electric wires at the front end and the rear end of the surface facing the first pressing plate 2. .... 31a
... are projected at a constant interval in the width direction, whereby the wire arranging and wire holding portions 30 and 31 are formed in a comb shape. In addition, the width of the second pressing plate 3 is such that the side plates 11 and 11 at both ends in the width direction of the connector body 1 are provided.
It is formed with the same interval as the interval.

To connect to the above-described multistage connector of the present invention, as shown in FIG.
An electric wire (not shown) is sandwiched in the wire arranging and wire holding portion 10 to hold the wire, and the end of the wire is U-groove pressure contact terminal 5, ..., 6 ...
・ Providing a close contact with the pressure contact part of ∘ makes it intervene in the lower surface 8.

Next, the second pressing plate 3 is engaged with the engaging recessed grooves 15, 15 of the connector body 1 by engaging the base portions 25a, 25a of the engaging protrusions 25, 25 at both ends thereof with the lower step surface 8.
The electric wire is sandwiched from above and below by the wire arranging and wire holding portion 10 and the wire arranging and wire holding portions 26 and 27 of the second pressing plate 3.

Next, the second holding plate 3 and the connector body 1
The electric wire is sandwiched between the rear wire arranging and wire holding portions 30, 31, 9 to hold the wire, and the U-groove pressure contact terminal 4 on the upper surface 7
The pressure contact part in ... is made to pass in the proximity.

Then, when the first pressing plate 2 is put on the second pressing plate 3, the inclined surfaces 21a at the lower ends of the leg pieces 21 and 21 are formed.
Hits the upper ends of the engaging ridges 25, 25 of the second pressing plate 3, but when the first pressing plate 2 is pushed into the connector body 1 side in this state, the engaging ridges 25, 25 By sliding the end face on the inclined surface 21a, the leg pieces 21, 2
1 is pushed outward against the spring property. As a result, the first pressing plate 2 is pushed in, but when it is pushed in to a predetermined position, the locking portions 22, 22 provided on the bases of the leg pieces 21, 21 are engaged with the engaging projections 25, 25. The second pressing plate 3 is pressed against the lower surface 8 of the connector body 1 by hitting the upper end of the base portion 25a.

The first holding plate 2 is pushed in by the set stroke, and the locking projection 16 of the connector body 1 and the second holding plate 3 are pushed.
When the engaging ridge 25 of FIG. 2 and the locking hole 23 of the leg piece 21 of the first pressing plate 2 coincide with each other, the leg pieces 21 and 21 are restored inward by the spring property, and as a result, FIG. 4 (B)
As shown in FIG. 3, the locking projection 16 and the engaging projection 25 are fitted into the locking hole 23, and the locking surface 1 at the lower end of the locking projection 16 is engaged.
6b is forcibly locked to the lower edge 23a of the locking hole 23, and the connector body 1, the first and second pressing plates 2 and 3 are united.

In this way, when the first pressing plate 2 is pushed in, the electric wire A interposed on the upper step surface 7 of the connector body 1 is directly pressed by the first pressing plate 2 and the U-groove pressure contact terminal 4 ...・ It is caught in the pressure contact part of and is connected. on the other hand,
The electric wire A interposed on the lower surface 8 is pressed by the second pressing plate 3 which is pressed by the first pressing plate 2 and is inserted into the pressure contact portions of the U-groove pressure contact terminals 5, ..., 6 ... Will be done.

In FIGS. 1 and 2, 33 is a leg piece 21.
The notch provided at the lower end can be disassembled by inserting a screwdriver or the like into the notch and expanding the leg piece 21 outward.

[0037]

EFFECTS OF THE INVENTION Since the present invention is configured as described above, the press-fitting plate for press-connecting by the U-groove press-connecting terminal and the high-density connection having a plurality of connecting parts without using a press-connecting jig. As a result, it is possible to extremely easily perform the operation by pushing the connector body with one touch and combining the connector body, so that the wiring work can be simplified and the cost can be reduced.

Furthermore, the upper end surface of the engaging projection of the second pressing plate and the lower end of the locking projection of the connector main body are located below the locking portion of the first pressing plate and the locking hole provided in the leg piece. The connector main body and the first and second pressing plates are firmly joined together in the directions in which they are pulled by each other by engaging with each other at the edges, so that the connector main body, the first and second pressing plates can be easily mounted. However, it is possible to ensure that the electric wire is pressed and held, and to prevent the wire from being pulled out after connection.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a multistage connector according to the present invention.

FIG. 2 is a side view showing a connected state of the embodiment.

FIG. 3 is a vertical sectional view showing a wire connection state of the embodiment.

FIG. 4 is a vertical cross-sectional view of a connector main body of the embodiment and a combination of the first and second pressing plates partially cut away to show a united state before and after uniting.

[Explanation of symbols]

 1 Connector Main Body 2 First Pressing Plate 3 Second Pressing Plate 4, 5, 6 U Groove Pressure Contact Terminal 7 Upper Step Surface 8 Lower Step Surface 15 Engagement Groove 16 Engagement Projection 21 Leg 22 Engagement Section 23 Engagement Hole 25 Engaging ridge A electric wire

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Keiichi Yasuda 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Nihon Telegraph and Telephone Corporation

Claims (1)

[Claims] 1. A connector body having a plurality of steps formed by pressure-contacting and connecting portions by a U-groove pressure-contacting terminal on the upper surface, and an electric wire interposed on the lower surface of the connector body for pressure-connecting and connecting the electric wire. The second pressing plate, which is connected to the connector main body in this state, and the electric wire is pressed and connected to the upper surface of the connector main body. A first pressing plate coupled to the second pressing plate, and engaging ridges are formed at both ends in the width direction of the second pressing plate, while lower end surfaces are provided at both ends in the width direction of the connector body. An engaging groove having an upward opening that engages the base of the engaging protrusion to fit the second pressing plate to the connector body with the electric wire interposed therebetween.
A second holding plate is fitted to the connector body, and a locking projection for fixing the first holding plate to the connector body is formed on the upper surface with the electric wire interposed therebetween. At both end portions in the width direction of the holding plate, the connector body,
Spring-like leg pieces that are installed on both sides of the second holding plate are vertically installed, and each electric wire is interposed between the lower step surface and the second pressing plate and between the upper step surface and the first pressing plate. (1) When the pressing plate is pushed into the connector main body, the electric wire is pressed against and connected to each step surface, and the engagement for fixing the first and second pressing plates to the connector main body. A multi-stage connector characterized in that a locking portion for locking the upper end of the base of the protrusion and a locking hole for locking the lower end of the locking protrusion are formed in the leg piece.