JP3301515B2 - Connector block for injector of internal combustion engine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art Referring to FIGS.
29494), Injector connector block a
Has a plurality of injector connection portions d arranged in a required number at a required interval on a rod-shaped main trunk portion c made of a heat-resistant hard resin having a wire harness connector b integrally molded at one end. Have tab-shaped terminals e ₁ and e connected to the wire harness connector b and the injector connection portion d, respectively.
A plurality of busbars e exposing ₂ are embedded by insert molding (see FIG. 9).

A tab-shaped terminal e protruding from one end of a bus bar e
₁ is housed in the connector b, and a tab-like terminal e ₂ erected in the middle via a branch conductor part e ₃ is formed integrally with the main trunk part c, swells to the side and opens downward. The injector connection portions d having a cap shape are arranged and fixed in such a manner that they are exposed from the center inside and face downward. The tab-shaped terminal e ₂ in the injector connecting portion d is relayed upper (see Fig. 11) are exposed to protrude downward from the terminal insertion hole f, female contact portion to the relay terminal insertion hole f g
Inserting a relay terminal g having ₁ on both sides, the relay terminal g
With connecting one side of the tab-shaped terminal e _2, by connecting the other side tab-shaped terminal i projecting from the injector h, which impart power to the injector h (see FIG. 10). In addition, the code | symbol j is packing for waterproofing.

The connector blocks a on both sides of each injector connection portion d are provided with a pair of fastening portions 1 in which a collar k is incorporated, and the upper surface of each injector h connected to the fuel tube m at equal intervals. Has a fastening part l
And a pair of fastening portions n is provided, and the fastening portions l and m are fixed with screws p in a state where the injector connection portion d is connected to the injector h.

[0005]

In the above prior art, the injector connection portion d is connected to the injector h via the fastening portion l provided in a part of the connector block a, so that the engine mounting portion can be mounted on the engine. It is necessary to provide heat resistance to the material of the connector block a and to secure rigidity due to environmental problems such as accompanying high heat and vibration, and it is necessary to secure rigidity. Further, since it is necessary to provide the metal collar k at the fastening portion l, this also causes a high cost. Since two fastening portions l and n are required for each injector h, the connector block a is connected to the fuel tube m. The assembling work time becomes longer, and it is easy to forget to fasten a large number of screws p or insufficient tightening (see FIG. 12).

The present invention pays attention to such a point, and the material of the connector block is made of a normal resin material by improving the structure, and the number of fastening parts is largely reduced and the metal collar is eliminated, thereby reducing the cost. It is intended to achieve an improvement in down and fastening work efficiency.

[0007]

In order to achieve the above object, according to the present invention, a wire harness connector is provided at one end of a substantially rod-shaped main trunk made of a heat-resistant synthetic resin material, and a wire harness connector is provided in the extension direction of the main trunk. A plurality of injector connection portions electrically connected to the wire harness connector were provided, a reinforcement was buried in the main trunk portion, and the injectors were connected by bolts through fastening holes in the plurality of exposed fastening portions of the reinforcement. A configuration in which the fuel tube is connected to the fastening portion is adopted.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIGS.
Connector block A is a rod made of heat-resistant hard synthetic resin.
A wire harness (shown in FIG.
Wire harness cable for receiving power from
Necta A₀And the lower side of the extension direction of the main body 1
At equal intervals in the body 1 'extending straight
Three injector connection parts opened downward like a connector
A₁, A_Two, A_ThreeAnd each injector connection portion A₁,
A_Two, A_ThreeAre the injectors of the opposed internal combustion engine
D ₁, D_Two, D_ThreeAre fitted and connected.

[0009] Figure 2 'shows a molding substrate A' shaped base A of the injector connector block A wire-installing recess 2 is formed along the connector A ₀ wire harness main trunk 1 on the upper surface of , common wire Haisakushitsu 2 ₀ by wire-installing recess 2 bulkhead 3, the injector connecting portions A ₁ electric wire Haisakushitsu 2a, wire Haisakushitsu 2b injector connecting portions A ₂
And it is divided into the injector connecting portions A ₃ wires Haisakushitsu 2c.

[0010] male tab-shaped terminal 4a by insert molding in the wire harness connector A ₀ 4 pieces of wire harness connection terminals 4 partition wall 5 is provided exposed in the hood 6, the rear L-shaped A press-contact type electric wire connection portion 4b having a conductor press-contact groove is provided in a standing manner.

[0011] Three of the injector connecting portion A ₁ to A ₃ pair of injector connecting terminals 7, 7 'are fixed by insert formation in the partition wall 8 by the male tab-shaped terminal 7a, 7
a 'is exposed in the connecting cavities R, R' opening downward in the male connector housing 9, and has press-fit electric wire connection portions 7b, 7b 'having conductor press-contact grooves 7c, 7c'.
Are exposed in the electric wire routing concave portion 2 on the partition wall 8 (see FIG. 4).

[0012] wire in-installing recessed portion 2, the electric wires Haisakushitsu 2a, 2b, 2c, 2 ₀ via a first dedicated circuit wire B
₁ , 2nd dedicated circuit wire B ₂ , 3rd dedicated circuit wire B ₃
And the common circuit wire B is routed. Each wire B ₁ ,
One end of each of B ₂ , B ₃ , and B is press-connected to the corresponding press-fitting electric wire connection portion 4b of the four wire harness connection terminals 4,
The other ends of the wires B ₁ , B ₂ , B ₃ are connected to the press-contact type wire connecting portions 7 b of the injector connecting terminals 7 in the injector connecting portions A ₁ , A ₂ , A ₃ , respectively. The middle part is each injector connection A ₁ , A ₂ , A ₃
Are connected to the press-contact type electric wire connection portion 7b 'of the injector connection terminal 7'.

A connecting frame 1 "is continuously provided on one side of the body 1 'of the main trunk 1, and a metal having a high rigidity having an L-shaped cross section extends from the body 1' to the connecting frame 1". The reinforcing plate 10 is embedded by insert molding, and a fastening hole 10b is formed in the fastening portion 10a of the reinforcing plate 10 exposed in the four connection opening portions 11 formed in the connection frame portion 1 ″.

As described above, in a state where the wires B, B _{1 to} B ₃ are routed in the wire routing recess 2, the wire routing recess 2 is filled with the heat-resistant hard synthetic resin material P. The cover 12 is put on top and fixed by the engagement between the projection 1a and the locking hole 12a (see FIG. 4). Fuel tube C for internal combustion engine
The, Oite both sides of each injector D ₁ to D _3, the fastening fitting 13 is provided for the connector block A for the injector, the fastening holes 1 in the fastening portion 13a of the fastening fittings 13
3b is formed.

In the above configuration, when used, the relay terminals 14, 14 having female terminals 14a, 14b at both ends are fitted into the connection cavities R, R 'so that one of the female terminals 14
a, 14a of the male tab-shaped terminal 7a, leave connected 7a ', a male housing 9 of the injector connecting portion A ₁ to A ₃ in the injector connector block A in the injector D ₁ to D ₃ of the internal combustion engine in this state fitted into the female housing 15 female terminal 14b of the relay terminals 14 and 14, the male terminals 14b and the injector D ₁ to D ₃ 1
At this time, the fastening portion 10a of the reinforcing plate 10 directly contacts the fastening portion 13a of the fastening fitting 13, and the fastening hole 10b of the joining portion 10a is fastened to the fastening portion 13a of the fuel tube C. The bolts 17 are aligned with the holes 13b, and
At this time, the head 17 a of the bolt 17, which is a fastening member, is directly connected to the fastening portion 1 of the metal reinforcing plate 10 in the connection opening 11.
0a and firmly fastened and fixed (see FIG. 7).
In a portion corresponding to the head 18 of each of the injectors D _{1 to} D ₃ , a connection hole 19 for accommodating the head 18 is formed in the connection frame 1 ″, and the metal reinforcing plate 10 is exposed below. The metal reinforcing plate 10 exposed when the connector block A is fixed is directly connected to the injector head 18.
It is supported in contact with.

[0016]

As described above, according to the present invention, the injector connector block made of a synthetic resin material is fastened to the fastening portion of the fuel tube via the exposed portion of the embedded reinforcing plate without interposing the synthetic resin portion. As it is combined with the reinforcing plate to reinforce the rod-shaped main trunk,
In addition to using a heat-resistant synthetic resin material, a sufficient fastening strength can be obtained without using a reinforced synthetic resin material containing glass fiber, and cost reduction is achieved.

Further, in the present invention, the number of fastening portions can be greatly reduced, and fastening workability is improved.

[Brief description of the drawings]

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

FIG. 2 is a perspective view of an injector block of the internal combustion engine with a cover removed.

FIG. 3 is a perspective view of a reinforcing member.

FIG. 4 is a sectional view taken along line YY of FIGS. 1 and 2;

FIG. 5 is a perspective view of an injector connection terminal.

FIG. 6 is a cross-sectional view taken along line XX of FIG. 1 in a state where the injector is fastened to the injector.

FIG. 7 is a sectional view taken along line YY of FIG. 1 in a state where the injector is fastened to the injector.

FIG. 8 is a perspective view of a conventional injector connector block.

FIG. 9 is a perspective view of a bus bar provided inside the above.

FIG. 10 is a perspective view showing a connection portion with the injector, which is separated therefrom;

FIG. 11 is a cross-sectional view of an injector connecting portion.

FIG. 12 is a perspective view showing the entirety of an injector part and an injector connector block of a conventional internal combustion engine.

[Explanation of symbols]

A Connector block for injector A ₀ Connector for wire harness A ₁ , A ₂ , A ₃ Injector connection part C Fuel tube D ₁ , D ₂ , D ₃ Injector 1 Main part 1 ″ Connection frame part 10 Reinforcement plate 11 Connection opening Part 10a, 13a Fastening part 10b, 13b Fastening hole 17 Bolt

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-88926 (JP, A) JP-A-7-137090 (JP, A) JP-A-2-63071 (JP, U) JP-A-2-137 132844 (JP, U) Hira 3-77062 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F02M 55/02 340 F02M 51/06

Claims (5)

(57) [Claims] 1. A wire harness connector is provided at one end of a substantially rod-shaped main trunk made of a heat-resistant synthetic resin material, and a plurality of injector connection portions electrically connected to the wire harness connector are provided in an extension direction of the main trunk. An internal combustion engine, wherein a reinforcing member is embedded in the main trunk portion and connected to a fastening portion of a fuel tube having an injector connected by bolts through fastening holes in a plurality of exposed fastening portions of the reinforcing body. Connector block for injector. 2. The connector block for an injector of an internal combustion engine according to claim 1, wherein the fastening portion of the reinforcing plate is exposed in the connection opening in the main trunk portion. 3. A connection frame portion provided on one side of a main trunk portion, and a reinforcement having a substantially L-shaped cross section is buried from the main trunk portion to the connection frame portion. A connector block for an injector of an internal combustion engine according to the above. 4. The injector connector block of an internal combustion engine according to any of claims 1 to 3 fastening portion is characterized in that provided on both sides of each indicator <br/> Ekuta the fuel tube. 5. The fuel tube according to claim 1, wherein the reinforcing member is exposed at a portion facing the fastening portion and the injector of the fuel tube, and the exposed reinforcing member contacts the fastening portion and the injector. The injector connector block for an internal combustion engine according to any one of the above.