JPH0447422Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a power distribution device for an internal combustion engine, particularly one equipped with a vacuum device for controlling advance and retard angles.

[Conventional technology]

3 and 4 show a conventional power distribution device for an internal combustion engine equipped with a vacuum device, FIG. 3 being a longitudinal sectional view, and FIG. 4 being a plan view showing links of the vacuum device.

In the figure, 1 is a power distribution housing, 2 is a cap, 3 is a shaft rotated by the internal combustion engine, and 4 is an ignition signal that generates an ignition signal corresponding to each cylinder of the internal combustion engine according to the rotation of the shaft 3. A signal rotor 4 which is a generating unit and is fixed to a rotor shaft 401 loosely fitted to the shaft 3.
02 and a stator 403. Reference numeral 5 denotes an ignition timing control unit that controls ignition timing in response to an ignition signal from the ignition signal generation unit 4, and is mounted on a base plate 6 fixed to the power distributor housing 1. 7 is the stator 4 of the ignition signal generating unit 4
03, and is arranged to face the ignition timing control unit 5 with a distance in the axial direction of the shaft 3, and is attached to the power distributor housing 1 via a bearing 8 so as to be rotatable about the shaft 3. The mounted movable plate, 9 is a vacuum device that rotates the movable plate 7 around the shaft 3 via the link 901 to perform advance and retard angle control, and 902 is a connecting portion of the link 901 to the movable plate 7. The link 901 is connected to the surface of the movable plate 7 on the side facing the ignition timing control unit 5 by a connecting portion 902 at a position away from the ignition timing control unit 5, with emphasis on ease of assembly. 10 is the stator 4 of the ignition signal generating unit 4
A lead wire 11 connects the ignition timing control unit 5 to the ignition timing control unit 5, and a lead wire 11 connects the ignition timing control unit 5 to an external circuit.

[Problem that the invention attempts to solve]

Conventional power distribution devices for internal combustion engines are constructed as described above, and the connection between the link of the vacuum device and the movable plate is exposed, so there is a possibility that the insulation of nearby lead wires may be destroyed or the lead wires may be disconnected. I came across a problem.

This invention was made in order to solve the problems of the conventional ones, and the purpose is to provide a power distribution device for an internal combustion engine in which the connecting portion does not damage the lead wire. .

[Means for solving problems]

The internal combustion engine distributor of this invention has a vacuum device link and a connection portion between the movable plate and the link so positioned as to face the ignition timing control unit within the space between the ignition timing control unit and the movable plate in at least a portion of the rotational range of the movable plate.

[Effect]

In this invention, the connecting portion between the link of the vacuum device and the movable plate is hidden between the ignition timing control unit and the movable plate in at least a portion of the rotation range of the movable plate and is not exposed.

[Example of idea]

An example of this invention is shown below in Figures 1 and 2.
The diagram will be explained. FIG. 1 corresponds to FIG. 3, and FIG. 2 corresponds to FIG. 4, and the same parts as those of the prior art are given the same reference numerals and their explanations will be omitted. In the figure, 901A is a link corresponding to 901 of the conventional one, and 902A is a connecting portion corresponding to 902, and the connecting portion 902A has, in at least a part of the rotation range of the movable plate 7 (the moving range of the connecting portion 902A), It is arranged to face the ignition timing control unit 5 within a space between the ignition timing control unit 5 and the movable plate 7 (in the illustrated embodiment, between the base plate 6 and the movable plate 7). There is.

In this way, by hiding the connecting portion 902A between the ignition timing control unit 5 and the movable plate 7 even in a part of the rotation range of the movable plate 7, the arrangement of the lead wire 10 or the vacuum device 9 and its link 901A is made easier. Depending on the position, lead wire 1
There is less risk that the first class insulation will be destroyed by the connecting portion 902A or that the lead wire will be disconnected than in the conventional case. Of course, the connecting part 902A
If the movable plate 7 is located in such a position that it is hidden by the ignition timing control unit 5 over the entire range of rotation, the above-mentioned danger is completely eliminated, and this is the most preferable configuration.

Further, as in the conventional type shown in FIG.
In a configuration where the level positions (viewed in the axial direction) overlap,
Since it is necessary to prevent the connecting portion 902 from hitting the base plate 6 or the ignition timing control unit 5 in any part of the rotation range of the movable plate 7, the link 901, the connecting portion 902, the ignition timing control unit 5, etc. However, in this invention, there is a problem that the design margin is small due to restrictions on the layout when viewed from the top in FIG. 2 or FIG.
Since the ignition timing control unit 5 does not enter under the ignition timing control unit 5 and hit the base plate 6 or the ignition timing control unit 5, in order to prevent such a collision, the link 901, the connecting portion 902A, the ignition timing control unit 5, etc. There is also an effect that there is no restriction on the layout in plan view.

In the conventional case, the connecting portion 902 is always in a position away from the ignition timing control unit 5, so that the assembly of the connecting portion 902 and the installation of the ignition timing control unit 5 can be performed in any order. In contrast, in this invention, the connecting portion 902A is hidden by the ignition timing control unit 5 in at least a part of the rotation range of the movable plate 7, so that the connecting portion 902A is always in a position away from the ignition timing control unit 5.
It may be necessary to attach the ignition timing control unit 5 after assembling the connecting portion 902A, but such an assembly procedure simply involves assembling the connecting portion 902A after the ignition timing control unit 5 is attached, and there is actually no problem with this.

Furthermore, in the embodiment described above, the base plate 6 is not necessarily necessary, and the ignition timing control unit 5 can be fixed to the distributor housing 1 by other suitable means. A connecting portion 902A may be disposed between the plate 7 and the connecting portion 902A.

[Effect of idea]

As described above, according to this invention, the connecting portion between the link of the vacuum device and the movable plate is hidden between the ignition timing control unit and the movable plate in at least a portion of the rotation range of the movable plate. The connection part prevents or suppresses breakage of the lead wire, such as breakdown of the insulation of the lead wire in the vicinity or breakage of the lead wire, and further,
The effect of increasing design latitude regarding the layout of the links, connecting portions, ignition timing control unit, etc. can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional view of a power distribution device for an internal combustion engine according to an embodiment of this invention, Fig. 2 is a plan view showing the link of the vacuum device of the device shown in Fig. 1, and Fig. 3 is a conventional power distribution device for an internal combustion engine. FIG. 4 is a plan view showing the link of the vacuum device of FIG. 3. In the figure, 3 is a shaft, 4 is an ignition signal generation unit, 5 is an ignition timing control unit, 7 is a movable plate, 9 is a vacuum device, 901A is a link, 902A is a connecting portion, and 10 and 11 are lead wires. Note that the same reference numerals in each figure indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] An ignition signal generation unit that generates an ignition signal in response to the rotation of a shaft rotationally driven by an internal combustion engine, an ignition timing control unit that controls ignition timing in response to an ignition signal from the ignition signal generation unit, and the ignition signal generation unit. and a movable plate disposed opposite to the ignition timing control unit with a distance in the axial direction of the shaft, and a link connected to a surface of the movable plate on the side facing the ignition timing control unit. In the power distribution device for an internal combustion engine, the connection portion of the link to the movable plate is connected to the movable plate in at least a portion of the rotation range of the movable plate. A power distribution device for an internal combustion engine, characterized in that the power distribution device is disposed so as to face the ignition timing control unit within a distance between the power distribution device and the ignition timing control unit.