JP3011048B2 - Connector block for injector - 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, which is connected across injectors (fuel injection valves) of an internal combustion engine of an automobile or the like and supplies power for operating the injectors.

[0002]

2. Description of the Related Art Conventionally, as shown in FIGS. 6 and 7, this type of connector block for an injector includes a connector block body 1 formed into an elongated shape with a heat-resistant reinforced hard resin or the like. 1 is provided with a plurality of injector connection portions 2 to which injectors are connected from the lower side at predetermined intervals in the longitudinal direction.

An external wiring connection portion 3 is provided at one end of the connector block body 1 in the longitudinal direction, to which a connector of a wire harness as external wiring is connected from the side.

In the connector block body 1,
Busbars 4 extending from the respective injector connection parts 2 to the external wiring connection part 3 are respectively provided in an embedded manner, and power is supplied to the injectors via the respective busbars 4 to open and close the injectors.

[0005] For example, this type of injector connector block is disclosed in Japanese Utility Model Publication No. Hei 6-29494.

[0006]

However, according to the structure of the above-described conventional connector block for an injector,
Since the external wiring connection portion 3 is provided at one end in the longitudinal direction of the connector block main body 1, there is a disadvantage that the number of long bus bars 4 increases.

Also, since the connection direction of the injector to each injector connection portion 2 and the connection direction of the connector of the wire harness to the external wiring connection portion 3 are different from each other so as to intersect with each other, each bus bar 4 is provided with a different direction. The male tab 4a as a connection terminal part on the side of the external wiring connection part 3 and the male tab 4b as a connection terminal part on the side of the injector connection part 2 need to be bent in a direction crossing each other. There was a problem that the shape became complicated and the yield of the material at the time of manufacturing the bus bar 4 was poor.

In view of the above problems, an object of the present invention is to provide a connector block for an injector in which the bus bar is shortened and the shape of the bus bar is simplified to improve the yield of materials.

[0009]

A technical means for achieving the above object is to provide a connector block body formed in an elongated shape of resin with a plurality of injectors connected at predetermined intervals in the longitudinal direction thereof. An injector connection portion is provided, and an external wiring connection portion to which an external wiring is connected is provided.Bus bars from each injector connection portion to the external wiring connection portion are respectively arranged in an embedded manner, and each bus bar is In the injector connector block, comprising: a connection terminal portion disposed on an external wiring connection portion, a connection terminal portion disposed on the injector connection portion, and a connection portion connecting the two connection terminal portions, the external wiring connection portion is a longitudinally intermediate portion of the connector block body and provided with opposite and each injector connection portions, wherein each bus bar
Is the front in the longitudinal direction of the connector block body.
The wiring is formed symmetrically around the external wiring connection.
At the point where it is placed.

[0010] Also, a structure may be employed in which the connection terminal portion and the connection portion of each bus bar on the side of the external wiring connection portion are arranged on the same plane.

Further, the connection terminal on the injector connection side of each bus bar may be arranged on the same plane as the connection.

[0012]

According to the present invention, since the external wiring connection portion connected to the external wiring is provided at the longitudinally intermediate portion of the connector block main body, both sides of the external wiring connection portion with respect to the longitudinal direction of the connector block main body. , The distance to each of the injector connection portions located at the same position can be equalized, long busbars can be reduced, and busbars can be shortened.

Further, since the external wiring connection portion is provided on the opposite side of each injector connection portion of the connector block body, the connection terminal portion of each bus bar on the external wiring connection portion side and the connection between the injector connection portion side are provided. The terminal portions may be provided so as to extend in the opposite directions to each other, so that the shape of the bus bar can be simplified, and the yield of materials at the time of manufacturing the bus bar can be improved. Furthermore, each bus bar is a connector block body
Symmetrical with the external wiring connection in the longitudinal direction
Since they are formed and arranged in a shape,
It is possible to promote the sharing of busbars located on both sides.
Wear.

[0014] Further, the structure in which the connection terminal portion and the connection portion on the side of the external wiring connection portion of each bus bar are arranged on the same plane, and the connection terminal portion on the side of the injector connection portion of each bus bar is also a connection portion. if its structure arranged on the same plane as, Ru Hakare more simplification of the shape of the bus bar.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. In FIGS. 1 to 3, reference numeral 10 denotes an injector connector block used in an automobile engine, which is a heat-resistant hard resin (for example, , A connector block main body 11 formed in an elongated shape with, for example, polybutylene terephthalate containing 30% of glass fiber). The connection part 12 is provided integrally. In the present embodiment, the connector block 10 is used for an in-line four-cylinder engine.

As shown by arrows P in FIG. 3, an injector (not shown) is configured to be detachably connected to each injector connecting portion 12 from below.

On the upper surface side of the connector block body 11, a connector of a wire harness as an external wiring (not shown) is detachably connected from the upper side as shown by an arrow Q at an intermediate portion in the longitudinal direction thereof. A harness connection 13 as a possible external wiring connection is provided integrally.

In the present embodiment, a fuel supply passage 15 for supplying fuel to each injector is provided integrally with the connector block main body 11 along the longitudinal direction thereof.

In the connector block main body 11, each of the injector connection sections 12 is connected to a harness connection section 13.
Bus bars 17 are provided in an embedded manner, and selectively supply power to each injector through a wire harness and each bus bar 17, selectively open and close the injectors to supply fuel to the engine side. It is configured as follows.

Each bus bar 17 is provided with a male tab 17a as a connection terminal disposed on the harness connection 13.
And a male tab 17b as a connecting terminal portion disposed in the injector connecting portion 12, and a strip-shaped linear connecting portion 17c connecting the male tabs 17a and 17b. Each male tab 17b is appropriately bent and formed so that the male tabs 17b are arranged in a line.

Further, each male tab 17a is appropriately bent so that each male tab 17a located at the harness connection portion 13 is also arranged in a line.

The first embodiment of the present invention is constructed as described above. Since the harness connecting portion 13 is provided at the middle portion of the connector block main body 11 in the longitudinal direction, the harness connecting portion 13 is provided with respect to the longitudinal direction of the connector block main body 11. Harness connection 1
The distance to each of the injector connection portions 12 located on both sides of 3 can be equalized, the long bus bar 17 can be reduced here, and the bus bar 17 can be shortened.

Further, since the harness connecting portions 13 are provided on the opposite side of the injector connecting portions 12 of the connector block main body 11, the extending directions of the male tabs 17a and 17b of each bus bar 17 are opposite to each other. ,
The male tab 17a and the male tab 17b may be provided so as to extend in directions opposite to each other, so that the shape of the bus bar 17 can be simplified, the material of the bus bar 17 can be easily removed, and the yield of the material at the time of manufacturing the bus bar 17 can be improved. .

FIG. 4 shows a second embodiment, in which the same components as those in the first embodiment are denoted by the same reference numerals and the description thereof will be omitted. In the second embodiment, the male tab 17a on the harness connection portion 13 side of each bus bar 17 and the connecting portion 17c are arranged on the same plane.
The shape of 7 can be further simplified and can be manufactured more easily.

FIG. 5 shows a third embodiment, in which the same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted. The third embodiment has a structure in which the male tab 17a on the harness connection portion 13 side, the connecting portion 17c, and the male tab 17b on the injector connection portion 12 side of each bus bar 17 are all arranged on the same plane. Therefore, the shape of the bus bar 17 can be further simplified, and the bus bar 17 can be manufactured more easily.

At this time, the harness connecting portion 13 is provided at the intermediate portion in the longitudinal direction of the connector block main body 11, and each bus bar 17 arranged along the longitudinal direction of the connector block main body 11 is connected to the harness connecting portion 13. , So that the bus bars 17 arranged on both sides of the harness connection portion 13 can be used in common, so that the number of parts to be manufactured can be reduced and the production cost can be reduced by mass production.

In each of the above embodiments, the connector block 10 for an in-line four-cylinder engine is shown. However, the number of cylinders is not limited at all. Further, although the structure in which the fuel supply passage 15 is integrally provided in the connector block body 11 is shown, a separate structure may be used as in the related art.

[0028]

As described above, according to the injector connector block of the present invention, the external wiring connection portion is provided at the middle portion in the longitudinal direction of the connector block main body and on the opposite side to each injector connection portion. It is said that the distance to each injector connection portion located on both sides of the external wiring connection portion with respect to the longitudinal direction of the connector block main body can be equalized, long bus bars can be reduced, and bus bars can be shortened. There are advantages.

Also, since the external wiring connection portion is provided on the opposite side of each connector connection portion of the connector block main body, the connection terminal portion of each bus bar on the external wiring connection portion side is connected to the connection portion on the injector connection portion side. It is only necessary to provide the terminal portions and the terminal portions so as to extend in mutually opposite directions, so that there is an advantage that the shape of the bus bar can be simplified and the yield of materials at the time of manufacturing the bus bar can be improved. In addition, each busbar is connected
External wiring connection in the longitudinal direction of the
Because it is formed and arranged symmetrically as the center,
Bus bars on both sides of the external wiring connection
Can be promoted.

Also, a structure in which a connection terminal portion and a connection portion of each bus bar on the side of the external wiring connection portion are arranged on the same plane,
Furthermore, if the connection terminal portion on the injector connection portion side of each bus bar is also arranged on the same plane as the connection portion,
The advantage is that the busbar shape can be simplified.
You.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an arrangement of each bus bar according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a dispersion state of the bus bar.

FIG. 3 is a perspective view of a connector block showing the first embodiment.

FIG. 4 is a perspective view showing a bus bar according to a second embodiment.

FIG. 5 is a perspective view showing a bus bar according to a third embodiment.

FIG. 6 is a perspective view of a connector block showing a conventional example.

FIG. 7 is a perspective view showing the bus bar.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Connector block 11 Connector block main body 12 Injector connection part 13 Harness connection part 17 Bus bar 17a Male tab 17b Male tab 17c Connecting part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F02M 51/06 F02M 55/02

Claims (3)

(57) [Claims] 1. A connector block body formed into an elongated shape with a resin is provided with a plurality of injector connection portions to which injectors are connected at predetermined intervals in a longitudinal direction thereof, and an external connection to which an external wiring is connected. A wiring connection part is provided, and bus bars from each injector connection part to the external wiring connection part are respectively disposed in an embedded manner, and each bus bar is provided with a connection terminal part arranged in the external wiring connection part and an injector connection part. The connector block for an injector, comprising: a connection terminal portion disposed in the connector block; and a connection portion connecting the two connection terminal portions, wherein the external wiring connection portion is a middle portion in a longitudinal direction of the connector block body, and each injector connection The bus bar is provided with the external wiring connection portion in the longitudinal direction of the connector block main body. The injector connector block, characterized in that it is arranged is formed in a symmetrical shape as a heart. 2. The connector block for an injector according to claim 1, wherein a connection terminal portion and a connection portion on the side of the external wiring connection portion of each bus bar are arranged on the same plane. 3. The injector connector block according to claim 2, wherein a connection terminal portion and a connection portion of each bus bar on an injector connection portion side are arranged on the same plane.