JPS5965572A - Ignition distributor for internal combustion engine - Google Patents

Abstract

PURPOSE:To minimize the fixing space and improve the fixing efficiency by arranging main components of the electromagnetic pickup on the underside of a bracket supported in a housing in a device with an electromagnetic pickup arranged inside the housing. CONSTITUTION:In a device with an electromagnetic pickup to generate an ignition signal or a position detecting signal for an engine crank arranged inside a housing 6, a concave part 6a is shaped on the bottom of the housing 6, and inside this concave part 6a, main components such as a pickup coil 11 of the electromagnetic pickup, a magnet 12 and the like are contained. On the upper side of these main components, a bracket 13 is arranged and fixed on the housing 6 by screws 14. This construction permits to minimize the fixing space of the electromagnetic pickup in the housing 6 and as well improve the fixing efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an ignition power distributor for an internal combustion engine incorporating an electromagnetic pickup that generates an ignition signal or an engine crank position detection signal, and particularly to an arrangement structure of the electromagnetic pickup.

As shown in Figures 1 to 3, conventional ignition distributors have been used to synchronize with the engine rotation, as shown in Figures 1 to 3. The -°1 voltage from the ignition coil is applied through the shaft 1 which rotates with the shaft 1, the signal rotor 2 which is fitted onto the shaft 1 and rotates as a unit, and the power distribution 1. Key to distribute, top 4,
An electromagnetic pink-up 5 that faces a plurality of protrusions 2' of the signal 1 and 2 and generates a voltage signal synchronized with engine rotation by a change in magnetic flux brought about by the protrusions 2'; , a shut l, and an electromagnetic pickup 5 are integrated into a housing 6J that is fixed to the engine. In addition, electromagnetic pickup 5
is a pink amplifier coil 11 that converts magnetic flux changes into voltage signals. It is composed of a magnet 12 serving as a magnetic flux source, a bracket 13 that fixes and integrates the pink up coil 11 and the magnet 12 to form a magnetic path, and a screw 14 that fixes the bracket 13 to the housing 6. and,
The electromagnetic pickup 5 is attached to the bracket 1 as shown in FIG.
Pink amplifier coil 11 and magnet 1 in the second part of 3
2 was placed and fixed to the housing 6 with a screw 14.

Incidentally, since the screw 14 is tightened while adjusting the gap between the protrusion 2' of the signal rotor 2 and the pickup coil 11, it is preferable to provide it inside the housing 6. However, in the conventional screw 14 described above, The space for inserting the screw 14 is small, and the mounting surface of the screw 4 is deep. Additionally, there was a drawback that assembly was poor due to the magnetic force of Magneso I.12.

In order to solve the above-mentioned drawbacks, the present invention aims to reduce the installation space of the electromagnetic pink-up in the housing and improve the ease of assembly by arranging the pink amplifier coil and magnet at the bottom of the placket and fixing them to the housing. The purpose is to

The present invention will be described below with reference to embodiments shown in the drawings.

In FIG. 4, the housing 6 has a recess 6a on its bottom surface.
is formed, and the main components such as the pickup coil 11 and magnet 12 of the electromagnetic bi-7a are housed in this recess 6a, and the bracket and y+-13 located on the two sides of these main components are screwed It is fixed to the housing 6 by 14. The other configurations are the same as the conventional example shown in FIGS. 1 and 2.

By changing the conventional configuration shown in FIG. 3 to the configuration shown in FIG. 4, the electromagnetic pickup 5 can be mounted in the housing 6 (
It is possible to create a JJr that reduces the zJ space, and it is expected that the ease of assembly will be improved. Of course, bracket 13 is screw 1.
4 is fixed to the housing 6, but the screw +14
is preferably provided inside the housing 6 in order to tighten while adjusting the gap between the protrusion 2' of the signal rotor 2 and the pickup coil 11. In the conventional method shown in FIG. 3, there is no space for inserting the screw 14. sow,
Further, the mounting surface of the screw 14 is deep. Furthermore, the ease of assembly was improved by receiving the magnetic force of the magnet 12, but by adopting the 4j configuration shown in Fig. 4, the screw 1
4 is located above the bottom surface of the housing 6 and is less susceptible to the magnetic force of the magneto 112, so it is expected that ease of assembly will be improved.

Another embodiment for improving ease of assembly is shown in Fig. 6.

In ignition distributors for internal combustion engines that require two types of signals, the lower level electromagnetic pickup is particularly difficult to assemble, as the ignition switch uses two upper and lower electromagnetic pickups.
When the apparatus of the present invention shown in FIG. 6 is applied to the conventional system shown in the figure, the effects mentioned in 11;1 can be obtained more markedly.

In addition, in the two consecutive examples, the pickup
The coil 11 and the magnet 12 are located in the center of the bracket 13, and the screws 1 and 14 are located on both sides of the pin 7 cup coil If and the magnet 12. However, in the present invention, the bracket 13 ``plane against''
The relative positions of the second pickup coil 11, magnet 12, and screw 14 can be arbitrarily determined. or,
The shape of the placket 13 is not limited to a single plane, but may also be a step f=J plane or an inclined plane. Furthermore, the same electromagnetic pink amplifier can be used in both the conventional and the present invention.

[Brief explanation of drawings]

Figures 1 to 3 show a conventional power distributor, with Figure 1 being a longitudinal cross-sectional view, Figure 2 being a cross-sectional view taken along A-AkfA shown in Figure 1, and Figure 3 showing its main components. FIG. Fourth
The figure shows an example of the configuration of the main parts of the power distributor of the present invention.
y1 view, 51'! 2+ and FIG. 6 are side views showing the main part configurations of a conventional power distributor and an inventive power distributor having two electromagnetic pink amplifiers, respectively. 5... Electromagnetic pickup, 6... Housing, 1
1...Pickup coil, 12...Magnet,
13... Placket. Representative Patent Attorney Takashi Okabe

Claims (1)

[Claims] In an ignition power distributor for an internal combustion engine in which an electromagnetic pink amplifier is arranged inside a housing, main components of the electromagnetic pickup such as a pickup coil and a magnet are arranged under a bracket that supports the electromagnetic pink amplifier in the housing. ! , Ignition distributor for internal combustion engines.