JPH0610656Y2 - Ignition coil drip-proof cover - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a drip-proof cover which is attached to an ignition coil of an internal combustion engine such as an automobile engine to protect the connection terminal of the cable cord from water damage, salt damage and the like. is there.

[Prior Art] As is well known, the ignition coil has conventionally been equipped with a drip-proof cover in order to protect it from water damage and salt damage. The present invention relates to an improvement of this drip-proof cover.

Conventionally, generally used drip-proof covers include a cap type that covers the entire top of the ignition coil to enclose it, and a cap type that is divided into two parts and one end of which can be freely opened and closed by the hinge part. There is a split type in which the opening and closing ends of the other end are provided with locking means, and when mounted, they are closed in a cap shape so as to surround the upper end of the ignition coil.

The former cap type has an insertion hole at the top through which the cable cord is inserted, and after it is attached to the ignition coil, the terminal of the cable cord is inserted into the connection terminal through this insertion hole, or the cord is inserted in the preliminary insertion hole. It is used by any of the methods of inserting the cord and connecting the terminal of the cord to the connecting terminal of the ignition coil, and then displacing the cover and mounting it on the ignition coil.

The disadvantage of this cap type is that the insertion hole is formed large considering the work of connecting the cable cord as can be seen from the above handling, and this makes it easy for water to pass through the gap between the insertion hole and the cable when mounting. It is because that it penetrated and a complete covering effect was not obtained.

On the other hand, the latter split type cover is, for example, Jikkou Sho 59-.
As disclosed in Japanese Patent No. 30500, when the two divided cover parts are closed, the connected cable cord is passed through a circular hole formed along the divided part so that the cord and the cord are in close contact with each other, thereby making the circular shape. The water is prevented from entering through the holes, and the drawbacks of the cap-shaped cover can be effectively avoided.

However, since the latter split type cover must be opened laterally with the hinge as a fulcrum when attaching / detaching to / from the ignition coil, it is extremely difficult to handle when working in a narrow engine room, which hinders the work. was there.

Especially, in the recent automobiles where the volume of the engine room is suppressed and efficient equipment is arranged, the split type cover that has to be opened sideways is not suitable because it does not prepare unnecessary space. Has become.

[Problems to be Solved by the Invention] The present invention has been researched and developed to improve the above-mentioned problems in the conventional drip-proof cover for the ignition coil, particularly workability of mounting and difficulty of handling after mounting. The purpose is to make it easy to attach and detach according to the environment of the ignition coil arranged in a narrow space, and to keep the cable cord attached to the ignition coil. It is intended to provide a drip-proof cover for an ignition coil, which can be connected with the above-mentioned and which is excellent in sealing property.

[Means for Solving the Problems] The present invention has been made based on the above-mentioned object, and is characterized in that when the cover main body is formed in a cylindrical shape and is attached to the ignition coil, the main body is formed. It can be fitted in the fitting by linearly pressing it to the upper end of the ignition coil, and can be detached from the ignition coil by pulling it out. Then, a pair of lid members are hingedly supported on the upper end opening edge portion of the main body via a hinge portion so as to face each other, and an insertion hole through which a cable cord is inserted is formed at a balanced straight edge portion of the lid member. A semicircular cutout is provided to open the lid member to allow the cable cord connection work or maintenance work in the mounted state, while closing the cover to cover the connection terminal, At the same time, the cable cord is sandwiched between the notches so that the cable cord can be pulled out.

Furthermore, when the features of the present invention are described in detail,
The drip-proof cover of the present invention has a cylindrical cover main body adapted to the outer peripheral shape of the upper end of the ignition coil, and a pair of hinge portions are provided opposite to each other at the upper end opening edge, and a semicircular lid member is formed through the hinge portions. Each of them is hinged freely to open and close, and an engaging portion for blocking and holding is formed on a balanced linear edge portion of the lid member, and a semicircular notch portion forming an insertion hole for inserting a cable cord. On the inner peripheral surface of the lower end opening of the main body, on the other hand, there is formed a stopper for restricting the amount of fitting which engages with the upper end of the ignition coil, and at the edge of the opening, the stopper is opposed to the stopper for ignition. It is characterized in that a locking claw portion for locking the outer peripheral surface of the coil is formed.

Hereinafter, the drip-proof cover of the present invention will be described in detail with reference to the illustrated embodiments, and the features thereof will be described.

[Embodiment] FIG. 1 is a plan view showing a state in which a lid member is opened.
The figure is a central longitudinal front view of the above figure, FIG. 3 is a bottom view of the same, FIG. 4 is a plan view with the lid member closed, and FIG. 5 is a central longitudinal front view of the above figure.

In the drawing, 1 is a main body of a cover formed in a cylindrical shape that conforms to the outer peripheral shape of the ignition coil 2, and 3 and 4 are a pair formed at opposite positions of an upper edge 5 of the cover main body. It is a lid member that is hinged so as to be openable and closable via the hinge portions 6 and 7.

The cylindrical cover main body 1 is formed at a height capable of covering the connection terminal 8 provided at the upper end of the ignition coil 2 and the connection end 10 of the cable cord 9 to be connected to the ignition coil 2, and the upper end opening edge portion 5 thereof. The hinge portions 6 and 7 formed in 1 are formed by projecting a small piece outward and connecting thinned hinge pieces to the respective lid members 3 and 4 in a similar manner.

The lid members 3 and 4 are formed in a semicircular shape in which the circle of the main body 1 is divided into two, and the substantially central portions of the arc edges are connected to the hinge portions 6 and 7, respectively, and are hinged so that they can be opened and closed. The upper edge opening of the main body can be closed by balancing the direct edges 11 and 12 which are free ends.

The lid members 3 and 4 are provided with engaging portions 13 and 14 which are coupled to each other at the central portions of the straight edge portions 11 and 12, and an insertion hole 15 through which the cable cord 9 is inserted is formed avoiding the engaging portions. The semicircular notches 16 and 17 are formed facing each other.

The engaging portions 13 and 14 hold the lid member in a closed state. Here, walls 13a and 14a facing each other are erected from the upper surface of the lid member, and one wall 13a is provided with a vertical slit 13b and the other is provided. Wall 14
An engaging pin 14b having a bulge portion at the tip is formed in a by implanting, and the engaging pin 14b is engaged and coupled with the slit 13b at the time of closing so as to maintain the closed state.

The notches 16 and 17 are formed on the engaging portions 13 and 17 as shown in FIG.
Each pair is provided with 14 in between, and each of them is formed to have a diameter of approximately 1/2 of the diameter of the cable cord 9 to be inserted, and when a circular insertion hole 15 is formed, it can be closely attached to the outer peripheral surface of the cable cord 9. Further, here, an arcuate wall 18 is provided upright along the edges of the notches 16 and 17 so as to enclose the peripheral surface of the cord.

In this embodiment, a thin overlapping tongue piece 19 is projectingly provided on the linear edge portion 12 of one lid member 4, and a concave portion 20 is formed on the lower surface of the linear edge portion 11 of the lid member 3 corresponding to this. When the lid members are closed, the two are engaged with each other so as to firmly bond the linear edge portions to each other, and the arcuate edge portions of the both lid members 3 and 4 each have a locking piece with a claw protruding downward. Two lid members 3 and 4 are provided so that they are opposed to each other, and are releasably hooked onto a step portion 22 provided on the outer peripheral surface of the upper end opening of the main body 1 and closed when closed.
Does not cause any displacement with respect to the opening edge.

In the figure, 23 is a stopper for fitting amount regulation provided along the inner peripheral surface of the lower end opening of the main body 1, and 24 has an inward claw 25 protruding downward from the edge of the lower end opening. The locking claw portion.

A plurality of stoppers 23 are provided along the circumferential direction on the inner peripheral surface slightly behind the edge of the opening, and the stopper forms a fitting portion 26 for receiving the upper end of the ignition coil 2 on the inner periphery of the lower opening. Is forming. Further, the locking claw portion 24 makes the protruding surface 25a of the claw 25 an inclined surface to facilitate fitting with the ignition coil, and the claw 25 is aligned with the position of the step portion 27 provided on the outer peripheral surface of the upper end of the ignition coil. It is provided.

The drip-proof cover according to the present invention is made of synthetic resin. In this embodiment, the cover member 3 shown in FIG.
It is possible to perform integral molding by injection molding with the figure 4 open.

Now, the actual use of the drip-proof cover constructed as described above will be described below. In this cover, the cable cord 9 is connected to the ignition coil 2 in advance, and the cable cord 9 is connected to the ignition coil 2 again when it is attached. It does not hinder the use in any case where the cable is previously attached to the ignition coil and then the cord is connected, but here, the case where the cable cord is connected later will be described.

To install the ignition coil 2, first, the lid members 3 and 4 are opened, the main body 1 is linearly pushed so as to cover the ignition coil, and the fitting portion 26 provided at the lower end opening is attached. At this time, the stopper 23 is pushed until it comes into contact with the upper end of the ignition coil, and by this pushing, the locking claw portion 24 is locked to the step portion 27 so as not to be pulled out arbitrarily.

After mounting in this way, the connection end 10 of the cable cord 9 is exposed from the open upper end opening and pressed against the connection terminal 8 to make the connection, and then the lid members 13 and 14 are attached to the hinge portions 6 and 7.
Are closed at the fulcrum, the overlapping tongue piece 19 is fitted into the recess 20, and at the same time, the engaging portions 13 and 14 are joined to form a connection by the mutual abutting of the straight edge portions 11 and 12, and at the same time, one lid member 3 The locking piece 21 provided in the above is engaged with the step portion 22 of the main body 1 to close it.

The cable cord 9 is inserted between the insertion holes 15 formed by the notches 16 and 17 that face each other when the cover is closed, and the cable cord 9 is pulled out from the inside of the cover.

When the cover of the present invention thus mounted is required to open the connection terminal portion for maintenance or the like next, the engaging pieces 13 and 14 are released while the engaging pieces 21 are removed, and the cover is closed. The members 3 and 4 can be opened, and the entire connection terminal portion of the ignition coil can be exposed. Of course,
This work can be performed while the cable cord is connected, and the same work can be performed when the cable cord itself is replaced.

The cover main body for the ignition coil can be tightly fitted by adjusting the inner diameter thereof, particularly the inner diameter of the fitting portion 26 of the lower end opening to the outer diameter of the upper end of the ignition coil. However, the upper end opening is provided with packing over the entire circumference along the upper end opening edge in order to provide a more reliable sealing structure due to the relationship of closing the two lid members 3 and 4. It becomes more effective if the lower surface of the closing lid member is pressed against this packing.

[Effects of the Invention] The embodiment of the present invention has been described above. As is apparent from the above description, according to the present invention, when the ignition coil is mounted, the cover main body is exposed from above and the lower end opening is provided. Since it can be easily and tightly attached by pressing the part, it does not require a lateral space around the ignition coil unlike the above-mentioned two-split type drip-proof cover and can be used in a narrow space. It has the advantage of being easy to handle.

Further, since the drip-proof cover of the present invention can completely expose the upper end of the ignition coil by opening the lid member upward, the work of connecting the cable cord to the connection terminal provided on this is also necessary for maintenance. It has the advantage of excellent workability because it can be used for various types of work while the cover is attached.

Further, the drip-proof cover of the present invention completely covers the connection terminal portion of the ignition coil by closing the lid member, and at the same time, allows the cable cord to be inserted while being pressed by the notch portion so that the notch is formed. There is no room for creating an unnecessary space between the insertion hole formed by the portion and the cable cord, and therefore, there is an advantage that the water is not invaded through the insertion hole and the safety is excellent.

Of course, it goes without saying that the drip-proof cover of the present invention is excellent in manufacturability because it can be integrally molded with synthetic resin.

[Brief description of drawings]

1 is a plan view with the lid member opened, FIG. 2 is a front view of the central longitudinal section of the above figure, FIG. 3 is a bottom view of the same, and FIG. 4 is a plan view with the lid member closed. The figure is a central longitudinal front view of the above figure. DESCRIPTION OF SYMBOLS 1 ... Main body of a cover, 2 ... Ignition coil 3, 4 ... Lid member, 5 ... Upper end opening edge part 6, 7 ... Hinge part, 8 ... Connection terminal 9 ... Cable cord, 11, 12 ... Straight edge part 13, 14 ... Engagement Joint part, 15 ... Insertion holes 16, 17 ... Notch part, 23 ... Stopper 24 ... Locking claw part

Claims (1)

[Scope of utility model registration request] 1. A cover main body (1) is formed in a cylindrical shape conforming to an outer peripheral shape of an upper end of an ignition coil (2), and a pair of hinge portions (6, 7) opposed to an edge (5) of an upper end opening. And a lid member (3, 4) having a semi-circular shape is screwed to the hinge portion as a fulcrum so as to be freely opened and closed, and the abutting straight edge portions (11, 12) of the lid members (3.4) are joined together. The semi-circular cutouts (16, 17) forming the insertion portions (15) of the cable cord (9) and the engaging portions (13, 14) for holding the closed state are formed facing each other. On the other hand, on the inner peripheral surface of the lower end opening of the cover main body (1), a stopper (23) that engages with the upper end of the ignition coil (2) and restricts the fitting amount is formed, and at the edge of the lower end opening. The ignition coil is characterized in that an engaging claw portion (24) which is opposed to the stopper and is engaged with the outer peripheral step (27) of the ignition coil (2) is formed. Drip-proof cover.