JPH08158983A - Connector block for injector of internal combustion engine - Google Patents

Abstract

PURPOSE: To simultaneously fit or detach respective connectors against corresponding injectors by connecting a plurality of injector connecting connectors to a wire harness connecting connector, and receiving the respective connectors in a plurality of injector connecting connector receiving parts capably of being displaced. CONSTITUTION: An injector connecting block X is constituted of a connector receiving case body A, a wire harness connecting connector B, six injector connecting connectors B1 -B6 , and connector connecting electric wires W1 -W6 . The main body A1 of the case body A is provided with a wire harness connecting connector receiving part C on one end of a gutter-like electric wire receiving part 1, and injector connecting connector receiving parts C1 -C6 on one side of the electric wire receiving part 1. The each connector B1 -B6 is formed with a pair of flexible lock pieces 8 spread obliquely rearward on the opposed position of an outer circumferential wall, and hence respective connectors B1 -B1 , can be received in the receiving part capably of being displaced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an injector connector block of an internal combustion engine used for connecting an injector of the internal combustion engine of an automobile or the like with a power source for operating the injector.

[0002]

2. Description of the Related Art In FIGS.
-29494), injector connector block a
Has a plurality of injector connection portions d arranged in a required number at a required interval in a rod-shaped main portion c made of a heat-resistant hard resin having a connector b for a wire harness integrally formed at one end. Includes tab-shaped terminals e ₁ and e on the wire harness connector b and the injector connecting portion d, respectively.
A plurality of bus bars e exposing ₂ are embedded by insert molding (see FIG. 12).

That is, the tab-shaped terminal e ₁ projecting from one end of the bus bar e is housed in the connector b, and the tab-shaped terminal e ₂ erected in the middle via the branch conductor portion e ₃ serves as the main trunk portion c. The injector connection portions d, which are integrally formed and bulge laterally and open downward, are exposed from the inside of the center of each of the cap-shaped injector connection portions d and are fixed in an array so as to face downward. Then, the tab-shaped terminal e ₂ in the injector connection portion d
Is exposed by projecting downward from the upper part of the relay terminal insertion hole f (see FIG. 14), and the relay terminal g having female contact portions g ₁ on both sides is inserted and inserted into the relay terminal insertion hole f. Then, one side of the relay terminal g is connected to the tab-shaped terminal e ₂ and the other side is connected to the tab-shaped terminal i protruding from the injector h to supply power to the injector h (FIG. 13).
reference). Reference numeral j is a waterproof packing.

[0004]

In the prior art described above, the tab-shaped terminal e ₂ in the injector connecting portion d inevitably becomes a cantilever support structure by the inner wall d ₁ of the injector connecting portion d. Since the part side is exposed, there is a risk of deformation due to insufficient support strength due to insertion and removal forces at the time of connection with the relay terminal g and the tab side terminal i on the injector side. Tab-shaped terminals e ₂ in a plurality of injector connection parts d connected to the trunk part
Since the dimensional accuracy is strictly required so that they are arranged at the same pitch as the plurality of injectors h which face each other, once the above-mentioned deformation causes an error in the pitch, the injector connector block a is replaced with the injector h. It has the drawback that it cannot bind to groups.

The present invention has been made by paying attention to the above-mentioned points, and a plurality of injector connecting connectors corresponding to a plurality of injectors are displaceably provided in an injector connector block to connect the injectors. The pitch can be adjusted.

[0006]

In order to achieve the above object, an injector connector block for an internal combustion engine according to the present invention is provided with a connector for wire harness connection, and a plurality of connectors for injector connection via a plurality of connector connection electric wires. The wire harness connection connector is fixed at one end of the wire housing part of the connector housing case, and the injector connection connector can be displaced in the plurality of injector connection connector housing parts provided on one side of the wire housing part. It is characterized by being accommodated in the state.

[0007]

When the injector connector block is connected to the plurality of injectors of the internal combustion engine, the plurality of injector connecting connectors are connected to the opposing injectors while finely adjusting the pitch deviation between themselves.

[0008]

1 and 2, an injector connector block X is a connector housing case A made of heat-resistant hard synthetic resin, a wire harness connecting connector B housed in the case A, and six injector connections. use connector _{B 1, B 2, B 3} , B 4, B 5, B 6 and a connector connecting the wire _{W 1, W 2, W 3} , W 4, W 5, W consists of _6.

The connector housing case body A is a case body A.₁
And cover A₂And case body A₁Gutter-shaped electric wire
Connector for wire harness connection at one end of the accommodating portion 1
It has an accommodating portion C, and is provided on one side in the extension direction of the electric wire accommodating portion 1.
6 injects that are spaced evenly and open downward
Connector housing part C₁, C₂, C₃, C_Four,
C _Five, C₆And an injector D of the internal combustion engine, respectively.
₁, D₂, D₃, D_Four, D _Five, D₆To face. Each inn
Jector connection connector housing C₁~ C₆Accommodates the wire
Integrated through a connecting gutter part 3 that is connected to one side wall 2 of the part 1
It is composed of an octagonal housing cylinder 4 formed in
A pair of locking protrusions 5 are provided on the upper portions of the inner walls of the four facing each other.
In addition, four stoppers 6 project at the bottom of the other inner wall.
It is set up.

A pair of flexible locking pieces 8 are formed at the opposite positions of the rear portion of the outer peripheral wall of the connector housing 7 made of a heat-resistant and hard synthetic resin for the injector connecting connectors B _{1 to} B _{6 so} as to extend obliquely rearward. At the same time, four locking protrusions 9 are provided on the front portion of the outer peripheral wall at a portion that does not coincide with the flexible locking piece 8. In the connector housing 7, a pair of terminal accommodating chambers 10 are formed in the male housing portion 11, and an outer periphery of the male housing portion 11 has a space 13 into which the female housing portions 12 of the injectors D _{1 to} D ₆ enter. The body part 1
4 are formed. Female terminals 15 connected to the ends of the connector connecting electric wires W _{1 to} W ₆ are accommodated in the terminal accommodating chamber 10 and are locked by a known means to prevent rearward disconnection (FIGS. 3 and 7). reference).

Injector connection connector accommodating portion C ₁ ~
Each of the accommodating cylinder portions 4 of C ₆ has a flattened octagonal shape so that the diameter becomes longer in the extension direction of the electric wire accommodating portion 7, and the substantially oval connector housing 7 of the injector connecting connectors B _{1 to} B ₆ is attached. When the injector connecting connectors B _{1 to} B ₆ are inserted into the accommodating cylinder portion 4 in conformity with the shape of the accommodating cylinder portion 4, the flexible locking piece 8 is placed at the position where the locking projection 9 abuts the stopper 6.
The free end portion 8a of the vehicle rides over the locking projection 5 and engages with the locking projection 5 (see FIG. 4). Although each injector connector B ₁ .about.B ₆ can be displaced in the direction defined by the longitudinal axis of the housing tube portion 4 via the resilient locking pieces 8, octagonal accommodated in a direction intersecting with the major axis shaft Although it can be displaced through a slight deformation of the tubular portion 4, a flexible locking piece (not shown) also in the crossing direction.
It is also possible to provide the above so that the position can be positively adjusted. Further, the pair of flexible locking pieces 8 may be integrally provided on the housing tubular portion 4.

A connector fixing bracket 16 is provided on the bottom wall of the wire harness connecting connector accommodating portion C at the end of the electric wire accommodating portion 1, and the wire harness connecting connector B is also fitted and fixed on the outer peripheral surface thereof. (Not shown) is provided, and the attachment locking portion is engaged with the connector fixing bracket 16 to connect the wire harness connector B.
Is fixed.

The wire harness connecting connector B is previously connected to the injector connecting connector B via the connector connecting electric wires B _{1 to} B ₆ having lengths corresponding to the distances to the injector connecting connector accommodating portions C _{1 to} C _{6. 1 to} B ₆ are connected, and the connecting electric wires B _{1 to} B ₆ are gutter-shaped electric wire housing portions 1
From the above, the injector connecting connectors B _{1 to} B ₆ are accommodated in the corresponding injector connecting connector accommodating portions C _{1 to} C ₆ while passing through the connecting gutters 3.

Cover A₂Is the case body A₁Wire accommodation
Corresponds to part 1 and connector housing for 6 injectors
Has a closed shape, and the locking hole 17
Body A ₁It is fixed by engaging with the locking projection 18 of. 8 fruit
In the embodiment, the case body A₁’In the trough-shaped storage unit 1
Injector connection connector housing C₁~ C₆Set up
The support plate portion 18 is provided on the outer surface of the side wall 2'opposite the beam side wall 2.
A support chamber 19 is formed continuously and opens downward.
The vertical plate portion 20a of the metal reinforcing plate 20 having an L-shaped cross section.
It is inserted into the support chamber 19 and the horizontal plate portion 20b is gutter-shaped.
It is brought into contact with the bottom wall of the container portion 1 (see FIG. 9).

A locking projection 21 is punched out on the vertical plate portion 20a and engages with a flexible locking piece 22 provided at a corresponding position of the support plate portion 18 to fix the mounting state of the reinforcing plate 20. (See Figure 10). The reinforcing plate 20 prevents the connector block from being deformed in the attachment / detachment direction when the injector connector block is attached / detached to / from a plurality of injectors at once, and facilitates the attachment / detachment work.

[0016]

Since the present invention is configured as described above, a plurality of injector connecting connectors can be simultaneously attached / detached to / from a corresponding plurality of injectors.
At this time, the displaceably provided injector connecting connector can be connected to the injector while finely adjusting the deviation of the pitch by itself.

Further, in the present invention, since the female terminal can be immediately provided in the injector connecting connector, the conventional female-female terminal for relay can be omitted. Furthermore, by attaching the reinforcing plate, it is possible to prevent the connector block from being deformed when it is attached to or detached from the injector.

[Brief description of drawings]

FIG. 1 is a perspective view of an injector connector block of an internal combustion engine according to the present invention.

FIG. 2 is an exploded perspective view of the above.

3 is a cross-sectional view taken along line XX of FIG.

FIG. 4 is a cross-sectional view taken along line YY of FIG. 2 in which an injector connection connector is accommodated.

FIG. 5 is a cross-sectional view of a state in which the injector connection connector is connected to the injector.

FIG. 6 is a perspective view of an injector.

FIG. 7 is a sectional view taken along line ZZ in FIG.

FIG. 8 is a perspective view showing another embodiment of the case body.

9 is a sectional view taken along line RR of FIG.

10 is a cross-sectional view taken along line SS of FIG.

FIG. 11 is a perspective view of a conventional injector connector block.

FIG. 12 is a perspective view of a bus bar provided inside the same.

FIG. 13 is a perspective view showing a connection portion with the injector of the above, separated from each other.

FIG. 14 is a sectional view of an injector connecting portion.

[Explanation of symbols]

X Injector connector block A Connector housing case B Wire harness connecting connector B ₁ , B ₂ , B ₃ , B ₄ , B ₅ , B ₆ Injector connecting connector C ₁ , C ₂ , C ₃ , C ₄ , C ₅ , C ₆ injector connection connector accommodating portion D ₁ , D ₂ , D ₃ , D ₄ , D ₅ , D ₆ injector W ₁ , W ₂ , W ₃ , W ₄ , W ₅ , W ₆ connector connection electric wire 1 gutter -Shaped wire accommodating portion 8 Flexible locking piece 15 Female terminal 20 Reinforcing plate

Claims (5)

[Claims] 1. A plurality of injector connecting connectors are connected to a wire harness connecting connector via a plurality of connector connecting electric wires, and the wire harness connecting connector is fixed at one end of an electric wire accommodating portion of a connector accommodating case body, An injector connector block for an internal combustion engine, comprising: a plurality of injector connection connector accommodating portions provided on one side of an electric wire accommodating portion, the injector connecting connectors being accommodated in a displaceable state. 2. A plurality of injector connecting connector accommodating portions are provided on one side in the extension direction of the gutter-shaped electric wire accommodating portion,
2. The injector connector block for an internal combustion engine according to claim 1, wherein the injector connection connector is displaceable in the injector connection connector accommodating portion in the extension direction of the electric wire accommodating portion. 3. The injector for an internal combustion engine according to claim 1, wherein the injector connecting connector is displaceably locked by a pair of flexible locking pieces in the injector connecting connector accommodating portion. Connector block. 4. The injector connector block for an internal combustion engine according to claim 1, wherein the injector connecting connector is provided with a female terminal connected to the connector connecting electric wire. 5. The injector for an internal combustion engine according to claim 1, wherein a reinforcing plate is provided along one side wall of the gutter-shaped electric wire accommodating portion in an extension direction of the side wall. Connector block.