JPH0633760B2 - Distributor with integrated ignition coil for internal combustion engine - Google Patents

Description

TECHNICAL FIELD The present invention relates to an internal combustion engine ignition coil integrated type distributor in which an internal combustion engine ignition coil is integrated with a distributor.

[Prior Art] A distributor having a structure in which an ignition coil for an internal combustion engine is integrated with a distributor is disclosed in Japanese Patent Publication No. 60-18834 and Japanese Patent Laid-Open No. 61-34834.
-231708.

Among them, the one proposed in Japanese Examined Patent Publication No. 60-18834 has an ignition coil fixed to a side portion of a housing by means of screwing at right angles to the longitudinal axis direction of the distributor.

Further, the one proposed in Japanese Patent Laid-Open No. 61-231708 has a through hole formed in the ignition coil iron core in the longitudinal axis direction of the distributor, and the winding of the ignition coil is wound around the through hole. And an ignition coil is formed, and the ignition coil is attached to the upper portion of the shaft bearing portion of the housing.

[Problems to be Solved by the Invention] In the distributor disclosed in Japanese Patent Publication No. 60-18834, the distributor is laterally projected on the side to which the ignition coil is attached, and the distributor becomes large. . Also,
Ignition coil The weight of the ignition coil, which is formed by winding the winding around the iron core, accounts for a considerable proportion of the weight of the entire distributor, so if the ignition coil is attached to the side of the housing, the distributor will be It becomes unstable with respect to the longitudinal axis, and there is a problem in mounting it on a vehicle.

In addition, since the ignition coil must be fixed in the direction perpendicular to the longitudinal axis of the distributor by means of screwing means, the screwing direction of various parts of the distributor extends in many directions, which complicates the assembly work. Therefore, the efficiency of the assembling work also decreases.

On the other hand, in the distributor disclosed in the above-mentioned Japanese Patent Laid-Open No. 61-231708, since the ignition coil is attached to the upper part of the shaft bearing portion of the housing, the distributor corresponds to the ignition coil in the longitudinal axis direction. Become longer. Also, in a distributor with a structure in which the shaft is directly connected to the camshaft of the engine, the shaft span between the shaft bearings of the shaft is too short to cause rotational fluctuation in the shaft, which causes interference and unstable output signals. There are difficulties.

Further, when the distributor is laterally arranged in the engine, the position of the center of gravity of the distributor in the longitudinal axis direction departs from the position of attachment to the engine, so that the distributor easily vibrates and the reliability of the strength deteriorates.

The present invention has been made in consideration of the current situation of the above-mentioned power distributor, and its purpose is to reduce the size of the whole and to have excellent stability and strength, and to facilitate the assembling work. Another object of the present invention is to provide an ignition coil integrated type power distributor for an internal combustion engine.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a housing with a shaft that rotates in synchronization with rotation of an engine, an ignition coil integrally attached to the housing, and an ignition timing signal. Thus, in the internal combustion engine ignition coil integrated type distributor for applying a high voltage from the ignition coil to the ignition plug of each cylinder of the engine, the iron core of the ignition coil is formed in an annular shape, and penetrates the iron core. The shaft is arranged and the ignition coil is integrated with the housing.

[Operation] In the present invention, the shaft of the distributor is provided so as to penetrate the iron core of the ignition coil formed in a ring shape, and the ignition coil is integrated with the housing. For this reason, the entire distributor can be downsized, and the center of gravity of the distributor can be set substantially on the longitudinal axis of the distributor in the radial direction. Further, the position of the center of gravity of the distributor on the longitudinal axis can be set in the vicinity of the mounting position for the engine.

Further, the ignition coil is integrated with the housing by fixing the iron core of the ignition coil to the housing by screwing in the extension direction of the shaft of the distributor like the other parts.

Therefore, the entire distributor is miniaturized, the shaft span between the shafts of the shaft shaft is long, rotation runout does not occur, stability is excellent, and the strength of the ignition coil is sufficient. It is assembled integrally with the housing.

[Embodiment] An embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 6.

Here, FIGS. 1 to 6 are views showing the constitution of an embodiment of the present invention, wherein FIG. 1 is a vertical sectional view of a distributor, FIG. 2 is a plan view of the distributor, and FIG. 3 is an ignition coil. Fig. 4 is a perspective view of the winding of the ignition coil, Fig. 5 is a perspective view of the ignition coil, and Fig. 6 is a perspective view of the housing.

As shown in FIG. 6, the housing 2 is provided with a shaft bearing portion 13, and the shaft 1 is rotatably inserted into the through hole 15 of the bearing portion 13. As shown in FIG. 1, a signal rotor 3 having as many protrusions as the number of cylinders of the engine is attached to the shaft 1.
A rotor head 4 is attached to the end of the.

On the other hand, as shown in FIGS. 1 and 2, the housing 2 accommodates the signal detecting device 5 and the ignition coil 7, and the cap 6 is fixed to the housing 2 so as to cover them. The cap 6 includes a cap center electrode 9 located at the center of the rotor head 4 and a rotor head 4
The cap-side electrode 10 arranged laterally is attached.

As shown in FIGS. 3 to 5, the ignition coil 7 has a structure in which a winding 12 is wound around a part of an annular iron core 11 and a coil electrode 8 is formed in a protruding manner. As shown in FIG. 1, the ignition coil 7 is attached to the recess of the housing 2 on the outer side of the shaft bearing portion 13 of the shaft 1, and penetrates the inner side of the annular iron core 11 to shift the shaft 1 to the shaft 1.
Are arranged. A fixing hole 16 is formed across the iron core 11 and the housing 2 in the extension direction of the shaft 1, and the iron core 11 is fixed to the housing 2 by a fixing screw 14 screwed into the fixing hole 16 and integrated. There is.

Next, the operation of the embodiment having the above-mentioned configuration will be described.

When the shaft 1 rotates in synchronization with the rotation of the engine (not shown), the rotation of the signal rotor 3 is detected by the signal detection device 5 as a crank angle position signal of the intermittent engine, and the crank angle position signal is not shown. It is input to the control device.
From this control device, the ignition timing signal of the engine is input to the distributor, and a high voltage is induced at the output terminal of the ignition coil 7 by this ignition timing signal.

In this way, the high voltage induced in the ignition coil 7 is supplied from the coil electrode 8 to the rotor head 4 through the cap center electrode 9 and discharged from the rotor head 4 to the cap side electrode 10. Due to this discharge, a high voltage is applied to the spark plug of each cylinder of the engine (not shown).

According to the embodiment, the shaft bearing portion 13 of the shaft 1 is
Since the ignition coil 7 is located inside the annular iron core 11, the entire distributor is small and compact. Further, the center of gravity of the distributor is set substantially at the center position of the shaft 1 in the radial direction, and in the extension direction of the shaft 1 near the mounting part of the distributor to the engine, so that the distributor is stably mounted, Less vibration and improved strength.

Further, since the span between the bearings of the shaft 1 can be set long at the time of mounting, the rotational runout of the shaft 1, the rotor head 4, and the signal rotor 3 is extremely small, and a stable crank angle position signal and a discharge output signal are supplied.

Further, since the ignition coil 7 is fixed in the iron core 11 portion in the extension direction of the shaft 1 with the fixing screw 14 like other parts, the work efficiency of the assembly is very good and the manufacturing cost can be reduced.

[Effects of the Invention] As described in detail above, according to the present invention, the entire size is reduced, the engine is stably mounted without vibrating, the rotational shake is extremely small, and a stable signal is output. It is possible to provide an ignition coil integrated type distributor for an internal combustion engine, which is easy to assemble and reduces the manufacturing cost.

[Brief description of drawings]

1 is a longitudinal sectional view showing the construction of the embodiment, FIG. 2 is a plan view showing the construction of the embodiment, FIG. 3 is a perspective view showing the construction of the iron core of the ignition coil in the embodiment, and FIG. FIG. 5 is a perspective view showing the configuration of the winding of the ignition coil in the example, FIG. 5 is a perspective view showing the configuration of the ignition coil in the example, and FIG. 6 is a perspective view showing the configuration of the housing in the example. 1 ... Shaft, 2 ... Housing, 3 ... Signal rotor, 4 ... Rotor head, 5 ... Signal detection device, 6 ...
… Cap, 7 …… Ignition coil, 8 …… Coil electrode, 9
...... Cap center electrode, 10 ...... Cap side electrode, 11
...... Iron core, 13 ...... Shaft bearing part.

Claims (3)

[Claims] Claims: 1. A housing is provided with a shaft that rotates in synchronization with rotation of an engine, an ignition coil is integrally attached to the housing, and an ignition timing signal is used to ignite each cylinder of the engine from the ignition coil. In an ignition coil integrated type distributor for an internal combustion engine for applying a high voltage to a plug, an iron core of the ignition coil is formed in an annular shape, the shaft is penetrated through the iron core, and the ignition coil is integrated with the housing. An ignition coil integrated type distributor for an internal combustion engine, which is characterized by being integrated. 2. The ignition coil integrated type distributor for an internal combustion engine according to claim 1, wherein the shaft bearing portion of the shaft is arranged inside the iron core of the ignition coil. 3. The ignition coil integrated type distributor for an internal combustion engine according to claim 1, further comprising screwing means for fixing the iron core of the ignition coil in the extension direction of the shaft.