JPH034012Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a protection device for protecting an ignition device for an internal combustion engine from ingress of moisture, salt, etc.

(Prior art) In an ignition device for an internal combustion engine, if moisture or salt enters the high-pressure part, it causes a leak due to poor insulation in the ignition system, and at the same time causes an extreme drop in ignition voltage, causing the engine to stop rotating. In some cases, the engine could not start.

For this reason, the high voltage connection between the high voltage cord and the ignition device and the ignition device have traditionally been covered with a protective cover, but when installing the protective cover,
In a structure in which the high-voltage cord is simply inserted into an insertion hole provided in the protective cover, moisture or the like may infiltrate through the gap formed between the high-voltage cord and the inner peripheral surface of the insertion hole. In order to prevent this, for example, as disclosed in Japanese Utility Model Application Publication No. 54-32617,
A structure has been proposed in which a cup-shaped cover covering a high-voltage connection and an ignition device is integrally fixed to a high-voltage cord.

However, in the above structure, if the length of the cylindrical part of the protective cover is short, moisture, etc. may enter from below. It is desirable that the cylindrical portion of the protective cover be made longer in order to prevent the intrusion of foreign substances. On the other hand, when the protective cover and the high voltage cord are integrated, if the cylindrical part is set to be long due to the above request, when connecting the high voltage cord to the ignition device, the connecting part between the high voltage cord and the ignition device will be exposed from the outside. It is impossible to see, forcing workers to grope around, resulting in a structure that is extremely inefficient. That is, there was a problem that waterproofness and workability were not compatible.

(Purpose of the invention) This invention was made to solve the above-mentioned conventional problems. The purpose of the present invention is to provide a protection device for an ignition device for an internal combustion engine that is compatible with workability.

(Structure of the invention) In order to achieve the above object, this invention is formed from a high voltage cord having a connection terminal connected to an ignition device, and a cylindrical part with one end open.
In a protection device for an ignition device for an internal combustion engine, the cylindrical portion is provided with a waterproof protective cover formed of an elastic member, and the high voltage cord is integrally attached to the other end inside the cylindrical portion of the protective cover, The present invention is characterized in that recesses are provided continuously or intermittently in the circumferential direction of the cylindrical portion of the protective cover, so that the cylindrical portion of the protective cover can be easily bent and at the same time can be held in the bent state.

(Example) This idea will be explained below based on the drawings.

FIGS. 1 and 2 show an embodiment of this invention.

Reference numeral 1 designates a high-voltage cord for electrically connecting ignition devices, and a connecting terminal 3 is attached to the tip of the high-voltage cord 1 for electrical connection with a high-voltage terminal on the ignition device, for example, the ignition coil 2 side.

4 is a protective cover that covers the high voltage connection between the high voltage cord 1 and the ignition coil 2 and the ignition coil 2;
The elastic member is made of rubber, for example. This protective cover 4 has an insertion hole 5 that is watertightly fixed to the outer peripheral surface of the high voltage cord 1 by adhesive or the like, and a tower part 6 that covers the connection terminal 3 and that fits into the tower part 6 that has the high voltage terminal of the ignition coil 2. A cap portion 7 is provided to allow the cap to be opened.

Furthermore, a recess 9 is provided in the cylindrical portion 8 of the protective cover 4 over the entire circumference of the cylindrical portion 8 . The recess 9 is provided at such a position that when the cylindrical portion 8 of the protective cover 4 is bent, the tip of the connection terminal 3 slightly protrudes from the lower end of the cylindrical portion 8. Further, a handle portion 10 is provided at the lower end of the cylindrical portion 8.

According to the above structure, since the protective cover 4 is formed of rubber and the recess 9 is provided before the high voltage cord 1 is connected to the ignition coil 2, the recess can be easily opened as shown in FIG. It can be bent at position 9 and the folded state can be maintained. Therefore, the tip of the connection terminal 3 is held in a state slightly protruding from the lower end of the protective cover 4, and the operator can perform the connection operation while looking at both the connection terminal 3 and the tower part 6 of the ignition coil 2. This improves work efficiency.

On the other hand, after connection, since the protective cover 4 is made of rubber, it can be easily returned to its original shape by pulling down the handle 10, as shown in FIG. Therefore, the high voltage connection between the high voltage cord 1 and the tower section 6 and the ignition coil 2 can be accommodated, and waterproofness can also be ensured.

Although the position where the recess 9 is provided is not limited to the above example, it is considered that the work efficiency is best if the position is set so that the connection terminal 3 comes out from the lower end of the protective cover 4 as in the above example. . Further, although the recessed portion 9 is provided all around the cylindrical portion 8, it may be provided in a broken line shape, etc.
The material is not limited to rubber, and any elastic member having flexibility and insulation properties may be used.

In this embodiment, an ignition coil has been described, but this invention can also be applied to other ignition devices such as a distributor, etc.

(Effect of the invention) As explained above, according to this invention, by providing continuous or continuous recesses in the circumferential direction of the cylindrical part of the protective cover, the cylindrical part of the protective cover can be improved in waterproofness. Even if the protective cover is set to a long length, the protective cover can be bent at the position of the recess, and this bent state is maintained, so when connecting the high voltage cord to the ignition equipment, the operator can easily connect it one by one. You can work while looking at the department, and work efficiency will not deteriorate. Therefore,
It is possible to achieve both waterproofness and workability.

[Brief explanation of the drawing]

FIGS. 1 and 2 are sectional views of essential parts showing an embodiment of this invention. 1... High voltage cord, 2... Ignition coil, 3...
Connection terminal, 4...protective cover, 9...recess.

Claims (1)

[Claims for Utility Model Registration] A waterproof protection comprising a high-voltage cord having a connection terminal connected to an ignition device and a cylindrical portion with one end open, the cylindrical portion being made of an elastic member. In a protection device for an ignition device for an internal combustion engine, which is provided with a cover and has the high voltage cord integrally attached to the other end inside the cylindrical portion of the protective cover, the high voltage cord is continuously or A protection device for an ignition device for an internal combustion engine, characterized in that recesses are provided intermittently.