JPH057965U - Distributor for internal combustion engine ignition - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to obtain a distributor for ignition of an internal combustion engine that can reduce the overall height. A shaft 2 that interlocks with a crankshaft, a power distribution rotor 20 that is fixed to the tip of the shaft 2, a cap 6 that covers the power distribution rotor 20, and a center electrode 14 that is provided at the center of the cap 6. A power distribution electrode 15 disposed on the peripheral portion of the cap 6, and the power distribution rotor 2
In the internal combustion engine ignition power distribution device, the power distribution rotor 20 includes: a metal electrode 21 mounted on the center of the power distribution electrode 15; It is a middle-high school.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an internal combustion engine ignition power distributor having a power distribution rotor that distributes a secondary high-voltage output to a predetermined spark plug in synchronization with rotation of a crankshaft.

[0002]

[Prior Art]

 FIG. 2 is a side sectional view showing an example of a conventional ignition distributor for an internal combustion engine. Reference numeral 1 is a base that supports a shaft 2 and 3 is an ignition coil that penetrates a shaft 2. The ignition coil 3 is a casing. The iron core and the coil wound around the iron core are housed in the housing, and the housing is filled with an insulator. Reference numeral 4 is a unit screwed to the base 1 with screws 7 together with the cover 5 and the cap 6, and this unit 4 is a crank angle sensor unit for detecting the crank rotation angle of the coil and outputting the crank rotation angle information to the control computer. In addition, the power transistor for interrupting the current flowing through the primary coil of the ignition coil 3 in response to a signal from the control computer and its control unit are integrated. Reference numeral 9 denotes a connecting portion of a secondary high voltage terminal that is provided on the outer peripheral portion of the ignition coil 3 so as to send the secondary high voltage of the ignition coil 3 to the cap 6.

Reference numeral 10 is a signal plate fixed to the shaft 2 via a blank 11, 12 is a distribution rotor fixed to the blank 11 and distributing a secondary high voltage output to a predetermined ignition plug in synchronization with rotation of a crankshaft, 13 Is a metal electrode disposed on the power distribution rotor 12, 14 is a center electrode biased by a spring (not shown) to the metal electrode 13, and 15 is a plurality of metal electrodes 13 arranged at the peripheral portion of the cap 6. It is a distribution electrode whose tip is directed.

In the internal combustion engine ignition distributor having the above structure, when the shaft 2 rotates due to the rotation of the crankshaft of the internal combustion engine, the signal plate 10 fixed integrally with the shaft 2 also rotates and passes through the crank angle sensor section. Each time, the crank angle sensor unit outputs the crankshaft rotation angle information to the control computer. The power transistor interrupts the primary current of the ignition coil 3 in response to a signal from the control computer, and a secondary voltage is generated in the ignition coil 3 at the ignition timing. This secondary voltage is sequentially distributed to the distribution electrode 15 via the center electrode 14 and the metal electrode 13 with the rotation of the distribution rotor 12, the ignition plugs of the cylinders are sequentially ignited, and the internal combustion engine is continuously operated.

[0005]

[Problems to be solved by the device]

 In the conventional internal combustion engine ignition power distributor configured as described above, the metal electrode 13 is mounted on the flat plate power distribution rotor 12, and the tip of the power distribution electrode 15 is substantially flush with the tip of the center electrode 14. Therefore, there is a problem that the distribution electrode 15 is projected from the cap 6 and the total height of the distributor is increased accordingly.

The present invention has been made in order to solve such a problem, and an object thereof is to obtain an internal combustion engine ignition distributor which can reduce the overall height.

[0007]

[Means for Solving the Problems]

 In the distributor for ignition of an internal combustion engine according to the present invention, the distribution rotor has a middle height.

[0008]

[Action]

 In this invention, since the distribution rotor has a middle height, the distribution electrode side is lower than the center electrode side of the metal electrode, and the distribution electrode is positioned lower than that of the conventional one. ing.

[0009]

【Example】

 An embodiment of this invention will be described below with reference to the drawings. FIG. 1 is a side sectional view showing an embodiment of the present invention, in which the same or corresponding parts as in FIG. 2 are designated by the same reference numerals, and the description thereof will be omitted. In the figure, 20 is a medium- and high-power distribution rotor that is fixed to the blank 11 and distributes the secondary high-voltage output to a predetermined spark plug in synchronization with the rotation of the crankshaft, and 21 is attached along the slope of the distribution rotor 20. It is a metal electrode.

In the internal combustion engine ignition distributor configured as described above, the distribution electrode 15 side is lower than the center electrode 14 side of the metal electrode 21, and thus the distribution electrode 15 is compared with the conventional one. Since the cap 6 is positioned downward, it is possible to suppress the protrusion of the power distribution electrode 15 in the cap 6.

In the above embodiment, the Hall effect type internal combustion engine ignition distributor is described, but an optical distributor and a magnetic distributor may be used.

[0012]

[Effect of the device]

 As described above, according to the internal combustion engine ignition distributor of the present invention, since the distribution rotor has a middle height, the distribution electrode side is lower than the center electrode side of the metal electrode. Since the distribution electrode is located lower than the conventional one, the total height of the distributor can be reduced accordingly.

[Brief description of drawings]

FIG. 1 is a side sectional view showing an embodiment of the present invention.

FIG. 2 is a side sectional view showing an example of a conventional internal combustion engine ignition distributor.

[Explanation of symbols]

 2 shaft 6 cap 14 center electrode 15 power distribution electrode 20 power distribution rotor 21 metal electrode

Claims (1)

[Claims for utility model registration] Claims: 1. A shaft that interlocks with a crankshaft, a distribution rotor fixed to the tip of this shaft, a cap that covers this distribution rotor, and a central part of this cap. A center electrode, a power distribution electrode disposed on the peripheral portion of the cap, and a metal mounted on the power distribution rotor, the base end of which abuts the center electrode and the tip of which is directed to the tip of the power distribution electrode. An internal combustion engine ignition distributor having electrodes, wherein the distribution rotor has a middle height.