JPH0220812Y2 - - Google Patents

Description

[Detailed explanation of the invention] (Field of industrial application) This invention is designed to prevent water or salt water from entering between the high voltage terminal and the primary terminal, which connect the high voltage cord of the ignition coil.
This invention relates to a drip-proof cover that covers the top of the ignition coil from above in order to prevent the high voltage from dropping and also to prevent the cap of the ignition coil from being damaged and scattered due to wiring errors.

(Prior Art) Such a drip-proof cover is known from Japanese Utility Model Publication No. 59-30500. It consists of two openable and closable plastic cylindrical shells that have a top wall that covers the upper half of the ignition coil from above and a surrounding wall.The top wall of both cylindrical shells has a rubber cap through which the high voltage cord of the ignition coil passes. Each surrounding wall is provided with a shielding part inclined radially inward, the tip of which abuts on half the periphery of the ignition coil.

(Problem to be solved by the invention) In the above-mentioned drip-proof cover, both cylindrical shells are individually molded in separate cavities, so one end of the surrounding wall of one cylindrical shell has a support shaft, and the other It is necessary to provide a pin at one end of the surrounding wall of the cylindrical shell, and to assemble both cylindrical shells so that they can be opened and closed using this support shaft and the pin.
A casting cavity must be prepared for molding each cylindrical shell, which increases costs.

(Means for Solving the Problems) Therefore, the present invention is such that both cylindrical shells are integrally connected to each one end of the surrounding wall by a thin hinge, and the one end of one surrounding wall and the above of the other surrounding wall are connected to each other by a thin hinge. It is characterized in that one end is provided with an engaging portion that catches and engages when both cylindrical shells are closed.

(Function) According to the present invention, both cylindrical shells are integrally formed with a thin hinge that connects each end of the surrounding wall, and when the two cylindrical shells are closed and installed around the top of the ignition coil, the engaging portions are connected to each other. It hooks and engages automatically.

(Example) In the illustrated example, a and b are respectively cylindrical shells,
In this case, each cylindrical shell has a substantially semicircular upper wall 2 in order to cover the ignition coil 1 which is substantially cylindrical from above.
a, 2b, and semi-cylindrical surrounding walls 3a, 3b. Each upper wall 2a, 2b has semi-cylindrical parts 6a, 6b which face each other and surround a rubber cap 5 through which a high voltage cord connected to a high voltage terminal connected to a high voltage terminal in a high voltage terminal mounting cylindrical part 1' provided in a cap 4 of the ignition coil is passed. It is provided to protrude upward. When there is one high-voltage terminal, there is one pair of semi-cylindrical parts as shown in the figure, and when there are two, there are two pairs. Further, at the lower end of each of the surrounding walls 3a, 3b, there are provided shielding parts 7a, 7b which are inclined inward in the radial direction and whose tips are in pressure contact with the half circumference of the ignition coil.

In addition, each surrounding wall 3a, 3b has a shielding part 7a, 7b.
Inward projecting parts 8a and 8b are formed slightly above the cap 4 of the ignition coil to contact the top and bottom of the caulked part 4', which is fixed by caulking the cap 4 of the ignition coil. It is best to prevent it from moving.

Now, in accordance with the present invention, the two cylindrical shells a and b are connected by a thin hinge 9 connecting one end of the surrounding walls 3a and 3b.
They are united. In this embodiment, there are two hinges 9 spaced apart from each other vertically, and between the two hinges 9, there is an engaging portion 10 that catches and engages when the hinge 9 is bent and both cylindrical shells a and b are closed. is provided. The engaging portion provided on the surrounding wall side of the cylindrical shell a is a protruding piece 10a that protrudes while being curved outward, and the engaging portion provided on the surrounding wall side of the cylindrical shell b is a protruding piece 10a that cannot be passed through. This is a frame 10b with holes that can be formed.

In addition, at each other end of the surrounding wall of both cylindrical shells, there are claws 11 for closing both cylindrical shells and keeping them attached to the ignition coil.
A fastener 11 consisting of a locking hole 11b into which a claw is locked irreversibly is provided in the same manner as in the conventional example.

To use, wrap the upper half of the ignition coil in one of the cylindrical shells, for example a, then close the other cylindrical shell by bending the hinge 9, wrap the remaining upper half of the ignition coil, and then close the surrounding wall of both cylindrical shells. The other end is fastened with a fastener 11 and attached. As a result, the semi-cylindrical parts 6a and 6b provided on each upper wall of both cylindrical shells compress and surround the rubber cap 5 through which the high-voltage cord passes, and the shielding parts 7a and 7b of each surrounding wall surround the ignition coil. Pressure-fits to almost completely prevent water and salt water from entering the inside of the cover.

One end of the surrounding wall to which the thin hinge 9 is connected is connected to the engaging portion 10 when attached to the ignition coil.
Since a and 10b are hooked, when the cap of the ignition coil is damaged and scattered, the engagement part reliably prevents the risk of the hinge 9 being torn off and scattered. In other words, the hinge 9 and the engaging portion 10 can double prevent the cover from flying off due to the cap flying off.

In this embodiment, an overhanging wall 12a is provided that extends from the open end surface of one of the cylindrical shells, for example, the upper wall of a and the upper part of the surrounding wall, and when both cylindrical shells are closed, the overhanging wall 12a extends from the other side. It is fitted into a stepped recess 12b provided at a corresponding portion of the open end surface of the cylindrical shell b, thereby more effectively preventing intrusion of water, salt water, etc., and preventing cover damage and scattering due to cap scattering.

In addition to the cylindrical shape shown in the figure, the ignition coil 1 may also have a rectangular rectangular parallelepiped shape, in which case the cylindrical shell may be formed into a rectangular cylindrical shape.

(Effects) According to the present invention, a drip-proof cover can be manufactured using a single casting cavity, although it is a little larger, and can be provided at low cost, as well as preventing a drop in secondary high voltage due to the intrusion of water, salt water, etc. Although the effect is the same as that of the conventional cover, it is possible to obtain a drip-proof cover that is much more effective in preventing scattering due to cap breakage.

[Brief explanation of the drawing]

The drawings show one embodiment of the drip-proof cover of the present invention; Fig. 1 is a plan view of the molded state, Fig. 2 is a front view of the same, and Fig. 3 is the case where both cylindrical shells are closed and attached to the ignition coil. FIG. 4 is a cross-sectional view taken along the - line in FIG.
a, 3b are surrounding walls, 6a, 6b are semi-cylindrical parts, 7
a and 7b are shielding parts, 9 is a hinge, and 10 is an engaging part.

Claims (1)

[Claim for Utility Model Registration] Consisting of two openable and closable plastic cylindrical shells each having an upper wall that covers the upper half of the ignition coil from above and a surrounding wall, each of which has an ignition coil on its upper wall. A shield for the ignition coil of an internal combustion engine, in which each enclosing wall is provided with a shielding part inclined radially inward, the tip of which abuts half the circumference of the ignition coil. In the drip cover, each one end of the surrounding wall of the two cylindrical shells is connected together with a thin hinge, and the one end of one surrounding wall and the one end of the other surrounding wall are connected when both cylindrical shells are closed. A drip-proof cover for an ignition coil of an internal combustion engine, characterized in that it has an engaging portion that hooks and engages with the ignition coil of an internal combustion engine.