JPH0349430Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lead wire insertion hole structure for connecting an injector, which simplifies the work of attaching the lead wire to the injector.

In a carburetor equipped with an injector, the lead wire of the injector must be led out of the carburetor, but there is a risk of fuel leaking through the lead wire. Therefore, conventionally, a hole for inserting the lead wire is formed in the body of a carburetor equipped with an injector, the lead wire is passed through the hole, and a sealing member attached to the lead wire is fitted into the hole position to remove the lead wire. prevents fuel leakage.

Here, FIG. 1 shows a state in which a lead wire is inserted through a hole in the body and connected to an injector, and FIG. 2 shows a cross-sectional view of a conventional example near the hole in a state in which the lead wire is inserted into a hole in the body. The body 12 to which the injector 10 is attached has a hole 1 for inserting the lead wire 14.
6 is formed. One of the entrances and exits of this hole 16 is formed near the injector 10, and the other entrance and exit is formed in the side surface of the body 12. From the perspective of making the body 12 as small and lightweight as possible, the shape of the hole 16 has traditionally been L-shaped, with the direction changing at right angles, rather than a straight line, as shown in FIG. Although it is possible to
In that case, the volume of the body 12 increases and the weight of the carburetor increases accordingly, so it has not been adopted yet. ). A connector 18 for connection to the injector 10 is attached to the tip of the lead wire 14,
A grommet 20 is provided on the outer periphery of the lead wire 14 in the middle to fit into the hole 16 and seal the hole 16.
is installed.

When passing the lead wire 14 through the hole 16, the connector 18 at the tip of the lead wire 14 is inserted into the hole 16 from the outside of the body 12. However, since the inside of the hole 16 is shaped to change direction at right angles, even if the lead wire 14 is pushed into the hole 16, the connector 18 will only collide with the surface opposite the entrance of the hole 16, and the direction will change at right angles. There was no change, so lead wire 14 was never fed out of hole 16. For this reason, in the conventional device, when the connector 18 is brought into contact with the surface opposite the entrance of the hole 16, the connector 18 is pinched and pulled out from the extraction side of the hole 16 using tweezers 22 or the like.

The connector 18 at the tip of the pulled out lead wire 14 is connected to the injector 10, and then a cover 24 for covering the injector 10 is attached to the body 1.
Attach to 2. On the other hand, a sealing grommet 20 is fitted into the hole 16, and the grommet 20 closes the hole 1.
This prevents fuel from leaking from the lead wire 14 at the 6th position.

In this way, in the conventional method of attaching the lead wire 14 to the injector 10, the lead wire 14 is attached to the hole 16.
When inserting the lead wire 14 through the lead wire, it is necessary to manually pinch and pull out the connector 18 at the tip of the lead wire 14 with tweezers or the like, and this operation is time consuming and inefficient.

This invention allows the tip of the lead wire to be taken out from the hole simply by inserting the lead wire into the hole.
The purpose is to shorten the lead wire installation work time.

In order to achieve the above object, the present invention provides an insertion hole for an injector connection lead wire formed in a carburetor body, the inlet direction and the outlet direction are in different directions, and the injector is connected in a straight line from the inlet to the outlet. An injector connection that is inserted from the entrance of the insertion hole in which the connection lead wire cannot be inserted, and each position of the wall facing the entrance of the insertion hole has a slope that changes from the entrance direction to the exit direction. If you insert the injector connection lead wire even after the tip of the injector connection lead wire contacts the wall, the tip of the injector connection lead wire will change direction along the wall while contacting the wall and reach the exit. This is what I was trying to do.

Next, the present invention will be explained based on the drawings.

FIG. 3 is a view corresponding to FIG. 2 showing an embodiment of the injector connection lead wire insertion hole structure according to the present invention. The same reference numerals as in the conventional example indicate the same parts. The hole 32 formed in the carburetor body 30 has entrances and exits near the injector and on the outer surface of the body 30, similar to the conventional one. The internal shape of this hole 32 is such that the surface facing from the insertion side of the lead wire 14 (the outer surface of the body 30) is rounded or has a slope that gradually changes from the entrance direction to the exit direction. This R shape or slope is formed in such a shape and size that when the lead wire 14 is pushed in, the tip of the lead wire 14 that comes into contact with it changes direction toward the exit along the R shape or slope. ing.

In the present invention configured as described above, the wall shape of the surface facing from the entrance of the hole 32 is not an angular shape that changes direction at right angles as in the conventional case.
The connector 18 at the tip of the lead wire 14 is inserted into the hole 32 because the end of the lead wire 14 has an R shape and a slope that gradually changes the direction of travel while making contact with the push-in of the lead wire 14.
When the lead wire 14 is inserted into the hole 32 and the lead wire 14 is pushed into the hole 32, the connector 18 at the tip of the lead wire 14 comes into contact with the R-shaped or sloped position that is the opposite surface from the entrance of the hole 32, and while contacting there. It gradually changes its traveling direction to the exit side, and eventually jumps out automatically from the exit of the hole 32.

In this way, the tip of the lead wire 14 pops out from the hole 32 simply by pushing the lead wire 14, so the conventional work of taking out the tip of the lead wire 14 with tweezers or the like can be omitted. Therefore, the lead wire assembly work time can be shortened, and manufacturing costs can be reduced.

As described above, according to the injector lead wire insertion hole structure according to the present invention, the surface of the injector lead wire insertion hole facing from the lead wire insertion port is formed into an R shape or a shape having a slope. Therefore, just by pushing lead wire 14, lead wire 1
4 can be automatically taken out, the work time for attaching the lead wire 14 to the connector can be shortened, and costs can be reduced.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the carburetor with the lead wire inserted through the hole in the body and connected to the injector, and Figure 2 is a conventional view of the carburetor near the hole where the lead wire is inserted into the hole in the body shown in Figure 1. The sectional view of the example, FIG. 3, is a view corresponding to FIG. 2 of the insertion hole structure for the injector connection lead wire according to the present invention. 10...Injector, 14...Lead wire, 3
0...Body, 32...Hole.

Claims (1)

[Scope of utility model registration request] An insertion hole for the injector connection lead wire formed in the carburetor body, where the inlet and outlet directions are in different directions, and where the injector connection lead wire cannot be inserted straight from the inlet to the outlet. , each position of the wall facing the entrance of the insertion hole has a slope that changes from the entrance direction to the exit direction, and the tip of the injector connection lead wire inserted from the entrance of the insertion hole contacts the wall surface. The injector is characterized in that when the injector connecting lead wire is inserted afterwards, the tip of the injector connecting lead wire changes direction along the wall surface while contacting the wall surface and heads toward the outlet. Hole structure for connecting lead wires.