JPS5913346Y2 - Engine ignition power distributor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to an engine ignition power distributor, particularly to an improvement in a means for fixing a movable plate connected to a member for determining the engine ignition position.

First, a conventional device of this kind will be explained with reference to FIG.

In FIG. 1, 1 is a bowl-shaped housing having screw seats 1a and tapped holes 1b at several locations on its circumference.

1C is a through hole provided in two places at the bottom of this housing, 1d is a bearing mounting recess, 2 is a shaft rotatably supported in the housing 1 via a bearing 3, and a power distribution rotor (not shown) and a signal are mounted on the upper part of the shaft. A generator rotor, etc. is attached.

4 is a holding plate for mounting the bearing 3 in the recess 1d of the housing 1, and 5 is a screw for press-fixing the holding plate to the housing 1, which passes through the through hole 1C of the housing 1. .

Reference numerals 6 and 7 indicate fixed plates fixed to the housing 1, and these fixed plates are fixed integrally.

Reference numeral 8 denotes a screw for fixing the fixing plate 6 to the screw seat 1a of the housing 1 via a washer 9, which is screwed into the tapped hole 1b.

10 is a movable plate rotatably supported by the fixed plate 7;
An ignition position determining member (not shown) that generates an ignition signal as the signal generation rotor rotates is mounted on the top, and the movable plate 10 is a vacuum type member that is displaced according to the load condition of the engine. Link 11a of ignition timing adjustment device 11
is connected to.

In the conventional device configured in this way, in order to attach the fixing plate 6 to the housing 1, it is necessary to form the screw seat 1a. Therefore, the portion where the screw seat 1a is formed protrudes from the housing 1, and is used as a power distributor. Due to the large size, there are problems such as less space for installing electrical components on the layout of the engine, and it also requires work to form screw seats 1a and tapped holes 1b, resulting in poor manufacturability. Ta.

This idea was made in order to eliminate the drawbacks of the conventional ones as mentioned above. By fixing the fixed plate with a bearing holding plate that fixes the bearing to the housing, it is possible to eliminate the need for screw seats on the housing and to improve the power distribution device. The purpose of the present invention is to provide an engine ignition power distributor which can be made compact and has good manufacturability.

An embodiment of this invention shown in FIG. 2 will be described below.

In FIG. 2, reference numeral 1e denotes a stepped portion formed over the entire circumference of the housing 1, into which the fixing plate 6 is fitted.

Reference numeral 12 denotes a bearing holding plate which fixes the bearing 3 to the recess 1d of the housing 1 with screws 5, and has a U-shaped cross section. is also fixed.

Reference numerals 12a and 12b are screw holes respectively formed in this bearing holding plate.

Further, the bearing holding plate 12 has elasticity, and its height dimension, that is, the axial dimension is the distance between the fixed plate 6 fitted to the step portion 1e and the bearing 3 mounting portion of the housing 1. Since the housing 1 is fixed to the fixing plate 6 by the screws 5 and 13, the fixing plate 6 is crimped to the stepped portion 1e due to the elastic force of the holding plate 12. Ru.

In this structure, to fix the fixing plate 6 to the housing 1, first, before fixing the bearing retaining plate 12 to the housing 1 with the screws 5, the fixing plate 6 and the bearing retaining plate 12 are connected with the screws 13. The outer peripheral end of the fixing plate 6 is fitted into the stepped portion 1e of the housing 1.

Thereafter, the screw holes 12a of the bearing holding plate 12 and the through holes 1C of the housing 1 are made to face each other.

In this state, a gap is formed between the lower end of the bearing press plate 12 and the housing 1.

After that, when the screw 5 is inserted into the through hole 1C and screwed into the screw hole 12a, the bearing press plate 12 has its own elastic force, so that there is no gap between its lower end and the housing 1, and the inner circumference of the housing 1 is completely closed. Pressed onto the surface.

On the other hand, as the lower end of the upper end of the bearing holding plate 12 to which the fixing plate 6 is fixed approaches the housing 1, the downward pressure increases, and the outer peripheral end of the fixing plate 6 is pressed against the stepped portion.

Therefore, the fixing plate 6 is fixed to the bearing holding plate 12, and its outer peripheral end is fixed to the stepped portion 1e of the housing 1, so the reliability of fixing the fixing plate 6 is no different from the conventional one. It is something.

Note that if the bearing holding plate 12 is made of a material with high mechanical strength, it is not necessarily necessary to press the outer peripheral end of the fixing plate 6 to the stepped portion 1e of the housing 1, and it is only necessary to fix it to the bearing holding plate 12. The fixed state may be maintained by

As described above, according to this invention, one end of the bearing holding plate is locked to the housing and the other end is locked to the fixed plate, so that the bearing holding plate has elastic force and is connected to the ignition position determining member. The fixed plate, which rotatably supports the movable plate, is fixed to the housing using the elastic force of the bearing holding plate, which fixes the bearing to the housing. This eliminates the need for screw seats, which allows the power distributor to be made smaller.
Furthermore, there is no need for a special fixing member for fixing the fixing plate, and the bearing holding plate can also be used, which has the effect of reducing the number of parts and simplifying the manufacturing process.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional device, and FIG. 2 is a sectional view showing an embodiment of this invention. In the figure, 1 is a housing, 1a is a screw seat, 1b is a tapped hole,
1C is a through hole, 1d is a bearing mounting recess, 1e is a step, 2 is a shaft, 3 is a bearing, 5, 8.13 is a screw, 6, 7 is a fixed plate, 10 is a movable plate, 11 is a vacuum ignition timing In the adjustment device, 11a is a link, 12 is a bearing holding plate, and 12a and 12b are screws. In the drawings, the same reference numerals indicate the same or corresponding parts.

Claims (1)

[Scope of utility model registration request] A housing rotatably supports the shaft via a bearing, a movable plate connected to an ignition position determining member of the engine within the housing and capable of rotating in a direction to change the ignition position according to the operating state of the engine; A fixed plate rotatably supports the movable plate and is fixed to the housing, and a fixed plate is provided so as to have an elastic force with one end fixed to the housing and the other end fixed to the fixed plate, and the bearing is fixed to the housing. A power distribution device for engine ignition, comprising a bearing holding plate that is fixed to the housing and that fixes the fixing plate to the housing using the elastic force.