JPH0127582Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an engine plug cap structure that can be attached and removed from the outside of the cover.

[Prior art] The prior art disclosed in Japanese Utility Model Application Publication No. 56-137388 has a structure in which the cap that covers the plug is attached to the hole side of the cover, and it is not practical. The plug cap disclosed in Japanese Patent Publication No. 54-31748 has a structure in which the plug cap is attached and detached by opening and closing a holding part to which the plug cap is fixed inside.

[Problems to be solved by the invention] Therefore, with such a structure, it is not possible to easily attach and detach the plug cap. In addition, it is necessary to place it outward from the cover part.
The problem was that it stuck out so that it was easy to hang things on it.

[Means for Solving the Problems] The present invention solves such problems by making it possible to quickly and easily remove the cover with almost no exposure outside the cover and with the plug cord still connected. Therefore, a cover is attached to the outer periphery of the engine and has a plug mounting hole formed at a distance above the spark plug in the upper part of the engine, so that the cover can be fitted over the spark plug and connected to the plug cord. The lower part of the plug cap, which has a built-in connection terminal, is formed so that it can pass through the hole, and the upper part of the plug cap has an umbrella shape with a rounded upper surface and a large diameter that can be brought into close contact with the upper surface of the outer peripheral side of the hole. The head is integrally formed, and a small knob is provided projecting upward from the peripheral edge of the large-diameter head.

[Effect]

With this configuration, the large diameter head of the upper part of the plug cap, whose lower part is fitted into the spark plug, is placed in close contact with the outside of the plug mounting hole to prevent rainwater from entering or protruding outward, allowing for safe installation. Therefore, when attaching and detaching the spark plug, the plug cap with the large diameter head can be easily removed to the outside of the hole.

〔Example〕

Next, the embodiment shown in the drawings will be described.

Figure 5 shows a side view of a dust collection blower, which is a working machine with an engine. Inside the body, a blower cylinder B and an engine E are arranged side by side, and inside the blower cylinder B, a fan 7 driven by the engine E is installed. A blower cylinder 8 is installed inside and extends outward from the outer periphery of the blower cylinder B, a starter part 9 is installed on the side of the engine E exposed to the outside, and stands 10, 10 are installed at the bottom of the whole. A grip part 11 for hanging is installed on the upper part.

Further, a spark plug 1 which is removably screwed into the upper part of the engine E is installed so that a plug cord 4 in a cover 3 can be connected to the spark plug 1, and the cover 3, which is the outer peripheral surface of the blower, is attached to the outer periphery of the engine E. The cover 3 has a plug mounting hole 2 large enough to allow a plug wrench to pass therethrough and also to allow the spark plug 1 to pass through the portion of the cover 3 that is located above the blower and is away from above the spark plug 1. form and compose.

A is a plug cap, which is connected to the plug mounting hole 2.
A vertical hole 12 is formed in the lower end of the lower a1 side of the cap A, which is formed to allow passage through the spark plug 1, and a vertical hole 12 is formed in which a connecting terminal 5 is built in and can be fitted into the upper part of the spark plug 1. A horizontal hole 13 for inserting the cord 4 is formed in the upper part of the plug cap A, and a peripheral edge 14 can be closely closed to the upper surface of the outer peripheral side of the hole 2, and the upper surface 15 is rounded. Umbrella-shaped large-diameter head a2 that becomes the surface
is integrally formed, and a knob 6 slightly curved upward is provided protruding from the peripheral edge 14 of the large-diameter head a2.

Therefore, when the plug cap A is installed, the plug cap A is attached to the inside of the cover 3, as shown in FIGS. 1, 2, 5, and 6.
The lower part a1 of the plug cap A fits into the upper part of the spark plug 1 and can cover the connection part of the plug cord 4, and the large-diameter head part a2 of the plug cap A is attached to the upper part of the plug mounting hole 2 and its periphery. Part 1
4 is in close contact with the upper surface of the outer periphery of the hole 2, and the knob 6 is raised a little upwards so that the hole 2 can be covered, so that the part of the plug cap A above the cover 3 does not get in the way or protrude in a dangerous manner. It can be installed without any trouble.

Also, remove carbon and spark plug 1
When servicing the large-diameter head a2, as shown by the imaginary line in Fig. 3, the large-diameter head a2 is bent upward and bent into an inverted shape. By inserting your finger into the underside of the large head a2 and pulling it upward, you can pull out the plug cap A above the hole 2, as shown in Figure 4, and then insert the spark plug 1 through the open hole 2 with a plug wrench. This means that it can be taken out from the hole 2 while being screwed in the same way as before.

When installing the spark plug 1, it can be installed by performing the reverse operation of the above-mentioned operation.

[Effect of idea]

In this way, the present invention allows the large-diameter head a2 of the plug cap A to be brought into close contact with the upper part of the plug mounting hole 2, and to prevent the plug cap A from protruding outward from the cover, so that the plug cap can be installed in an internal manner. Therefore, especially in the case of engine-equipped work equipment, etc.
The cover can be installed safely without protruding outward and creating a dangerous situation, and has a compact structure. Moreover, the plug mounting hole 2 can be reliably covered to prevent rainwater from entering. Also, since it is configured so that it is easy to grasp the knob 6 and hold the large diameter head a2 with fingers, etc.,
The plug cap A can be easily removed to the outside of the hole 2, and the spark plug 1 can also be easily attached and detached, which has the advantage of being suitable for implementation.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of the main parts of an embodiment of the present invention.
Fig. 2 is a top view, Fig. 3 is a side sectional view of the plug cap, Fig. 4 is an explanatory diagram of the operation of Fig. 1, Fig. 5 is a partially cutaway side view of the dust collecting blower, and Fig. 6 is a side view of the dust collecting blower. The figure shows its front view. E...engine, 1...spark plug, 2...hole, 3...
Cover, 4...Plug cord, 5...Connection terminal, A...
Plug cap, a1... lower part, a2... large diameter head.

Claims (1)

[Scope of utility model registration request] The outer periphery of the engine E is covered with a cover 3 having a plug mounting hole 2 formed apart above the ignition plug 1 in the upper part of the engine, which can be fitted into the ignition plug 1 and connected to the plug cord 4. The lower part a1 of the plug cap A, which has a built-in connection terminal 5, is formed so as to be able to pass through the hole 2, and the upper surface 15 of the plug cap A has an umbrella shape with a rounded curved surface and extends around the outer periphery of the hole 2. An engine characterized in that a large-diameter head a2 that can be brought into close contact with the side upper surface is integrally formed, and a small knob 6 that projects upward from the peripheral edge 14 of the large-diameter head a2 is provided. Plug cap structure.