JP2676381B2 - Cover device for engine accessories - Google Patents

Description

TECHNICAL FIELD The present invention relates to a cover device for covering accessory parts of an engine such as an ignition coil.

(Prior Art) Conventionally, the cover device of the engine has been used in the actual construction of Sho 63-45031.
There is one disclosed in the publication.

According to this, the cover body is vertically rotatable about the pivotal axis of the horizontal axis provided on the side portion of the engine, and when the cover body is rotated upward, the above-mentioned portion of the engine is rotated. The upper part of the engine is opened when it is covered and rotated downward.

Further, a locking hook is formed on the cover body so as to lock the rotating end of the cover body on the engine side when the cover body is rotated upward.

(Problems to be Solved by the Invention) By the way, an engine is usually provided with an accessory such as an ignition coil, and a cover device for the accessory of the engine which covers the accessory openably and closably. Therefore, it is conceivable to apply the above-mentioned conventional technique to this cover device.

However, if the above-mentioned conventional technique is simply applied to the cover device, there are the following problems.

Firstly, in the above-mentioned conventional technique, the cover body is rotated up and down. However, in the engine, an accessory is arranged on the outer side portion in the vehicle width direction, and the accessory is provided above the accessory. An intake system member such as a surge tank may be provided. In this case, when the cover body is rotated up and down as described above, the intake system member may interfere with the cover body. .

Secondly, when attempting to perform maintenance or inspection work on the accessory, it is sometimes desirable to remove the cover from the pivot shaft on the engine side in order to secure a sufficient working space.
When the removal work is to be performed, in the above-mentioned conventional technique, first, the cover body is brought into a predetermined rotation posture, and then a part of the cover body is elastically deformed to make the pivot shaft. In the axial direction, so that the cover body is disengaged from the pivot shaft.

That is, the removal work requires a complicated work of moving a part of the cover body in the axial direction of the pivot shaft in addition to rotating the cover body. It is not preferable because it causes complicated maintenance and inspection work.

Thirdly, the engine is usually driven with vibration, and when this vibration is transmitted to the cover body, the cover body may rattle.

Fourthly, in the above-mentioned conventional technique, a pivot shaft for rotatably rotating the cover body is separately provided, which increases the number of parts of the cover device and complicates its configuration. .

Fifthly, when the running wind of the automobile enters the cover body, the internal pressure of the cover body becomes high, so that the engagement of the cover body with the engagement hook by the cover body causes
There is a possibility that the internal pressure may be released unexpectedly.

(Object of the Invention) The present invention has been made in view of the above circumstances and has the following object.

First, in the case where the cover device is provided with a box body (corresponding to the cover body of the above-mentioned conventional technique) for covering the accessory parts of the engine, the accessory parts can be exposed by the rotation of the box body. When rotating the box body, the intake system member of the engine does not interfere with the box body.

Second, make it easy to perform maintenance and inspection work on accessories.

Thirdly, the cover device is prevented from rattling when the engine is driven.

 Fourth, the structure of the cover device is simplified.

Fifthly, the locking of the box body with respect to the engine side is prevented from being abruptly released by the running wind of the automobile.

(Structure of the Invention) The features of the present invention for achieving the above object are as follows.

Note that, in the section of “Configuration of the Invention”, the terms in parentheses below correspond to the terms in the claims.

The engine 1 of the automobile has a surge tank (intake system member) 6 that protrudes outward from the left side wall (outer side wall) 18 above the left side wall (outer side wall) 18 in the vehicle width direction. A bracket 22 is attached to the left side wall (outer side wall) 18, and the bracket 22 has an upper surface plate 24 that extends horizontally from the left side wall (outer side wall) 18 toward the outside. A plurality of projecting columnar bodies 26 are provided, an ignition coil (accessory part) 19 of the engine 1 is supported by these columnar bodies 26, and a resin box body that covers the ignition coil (accessory part) 19
In the cover device for accessory parts of the engine provided with 31, in the outer peripheral surface of the first columnar body 26a of the plurality of columnar bodies 26, it is removably fitted from the outer side in the radial direction thereof.
A fitting portion 32 slidable around the axis of the cylindrical body 26a is formed on the outer peripheral surface of the cylindrical body 26a, and the first cylindrical body 26a is kept in this fitted state. By sliding the fitting portion 32 with respect to the outer peripheral surface of the engine, the box body 31 is reciprocally rotatable around the first cylindrical body 26a, and faces the left side wall (outer side wall) 18 of the engine 1. An opening 33 is formed on the surface of the box body 31, and the forward rotation of the box body 31 allows the ignition coil (accessory) 19 to be exposed to the outside of the box body 31 through the opening 33. This box body 31 by the return rotation of
When the ignition coil (accessory part) 19 is covered, a locked portion 34 that is releasably locked to the second cylindrical body 26b of the plurality of cylindrical bodies 26 from the outside in the radial direction is provided in the same box. A rear hook (hook) 38, which is formed on the rotating end side of the body 31 and elastically sandwiches the upper surface plate 24 from above and below in cooperation with the locked portion 34, is formed on the box body 31. .

(Operation) The operation of the above configuration is as follows.

In the section of “action”, the terms in parentheses described below correspond to the terms in the claims.

First, the surge tank (intake system member) 6 is present above the left side wall (outer side wall) 18 of the engine 1 of the automobile, and the left side wall (outer side wall) 18 has a top plate 24 and the top plate 24. When the ignition coil (accessory component) 19 is supported via the first columnar body 26a and the second columnar body 26b protruding upward, the box body 31 covering the ignition coil (accessory component) 19 is The ignition coil (accessory part) 19 can be exposed to the outside of the box body 31 by reciprocatingly turning around the first cylindrical body 26a.

Therefore, since the box body 31 rotates substantially horizontally, it is possible to prevent the surge tank (intake system member) 6 from interfering with the box body 31.

Secondly, the fitting portion 32 of the box body 31 is adapted to be fitted into and removed from the first columnar body 26a, which is the center of rotation of the box body 31, from the outside in the radial direction. ing.

Therefore, if the box body 31 is rotated around the first columnar body 26a to a predetermined position, the box body 31 can be separated from the first columnar body 26a as it is.

Therefore, when the box body 31 is removed from the engine 1 side for the purpose of maintenance and inspection work of the ignition coil (accessory part) 19, the work can be easily performed.

Thirdly, when the box body 31 covers the ignition coil (accessory part) 19, the box body 31 is locked to the second columnar body 26b by the locked portion 34, and the locked portion 34 and the rear portion. The upper plate 24 is elastically sandwiched by a hook (hook) 38, so that the box body 31 is held on the engine 1 side without rattling.

Fourthly, when the box body 31 is rotated, the first cylindrical body 26 for supporting the ignition coil (accessory part) 19 on the engine 1 is provided.
Since a is used, a separate pivot shaft is not required to make the box body 31 rotatable.

Fifthly, an opening 33 is formed on the surface of the box body 31 facing the left side wall (outer side wall) 18 of the vehicle engine 1 in the vehicle width direction, that is, the opening 33 is opened outward. ing.

Therefore, since the traveling wind of the automobile normally flows from the front to the rear, the traveling wind easily enters the box body 31 through the opening 33, and
It is prevented that the internal pressure in 31 becomes high.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In FIG. 2, reference numeral 1 denotes an automobile engine. The engine 1 is provided on a vehicle body so that its crankshaft (not shown) extends in the vehicle width direction. It is a V-type 6-cylinder engine having a rear cylinder row 3. The arrow Fr in the figure indicates the front of the automobile.

The intake system member of the engine 1 has a first throttle valve 5 arranged on the upper left side of the engine 1, and a surge tank 6 is connected to the first throttle valve 5. The surge tank 6 extends along the outer edge of the upper surface of the engine 1 in a plan view. The surge tank 6 has a Y-shaped branch pipe 7 in a plan view extending from the first throttle valve 5, and a front surge tank main body 9 is continuously provided before the branch pipe 7 extends forward.
A rear surge tank body 10 is connected to the rear extension end.
Both of these surge tank bodies 9 and 10 extend to the right in the vehicle width direction, and their respective right ends are surge tank connectors.
They are connected to each other at 11 and their interiors communicate with each other.

The above-mentioned surge tank 6 and the intake port of each cylinder are connected to an intake pipe.
Connected at 13. This intake pipe 13 is the front surge tank body 9
And a short tube 13a extending from one of the rear surge tank main body 10 and a long tube 13b extending from the other, and the extending ends of both tubes 13a, 13b are connected to each other, and 13c is connected to the intake port. A second throttle valve 15 is provided in each of the short pipes 13a, and the short pipes for the front and rear surge tank bodies 9 and 10 are further provided.
From the connecting portion of 13a, an air horn 16 made of sheet metal is provided so as to project toward the inside of the front and rear surge tank bodies 9 and 10 as above.

Then, as indicated by the arrow in the figure, the intake air is supplied to the first throttle valve 5.
→ Surge tank 6 → Air horn 16 → Second throttle valve 15 → Intake into each cylinder sequentially through intake pipe 13. The second throttle valve 15 opens and closes in conjunction with the rotation speed or output of the engine 1, that is, closes when the engine 1 is at a low speed and opens when the engine 1 is at a high speed.

Left side wall which is an outer side wall of the front cylinder row 2 in the vehicle width direction
A part of the surge tank 6 which is an intake system member of the engine 1 is disposed above the 18, and a part of the surge tank 6 projects outward from the left side wall 18. An ignition coil 19 as an accessory of the engine 1 is provided near the left side wall 18, and the ignition coil 19 is a cover device.
Covered with 20.

The cover device 20 will be described in detail with reference to FIGS. 1 and 3 to 5.

A bracket 22 made of sheet metal is fixed to the left side wall 18 with a bolt 23. The top plate 24 of this bracket 22
Extends horizontally from the left side wall 18 toward the outside. The upper surface plate 24 has a substantially rectangular shape in a plan view, and a plurality of cylindrical bodies 26 project upward from the upper surfaces of the respective corners thereof.
These cylinders 26 are fixed to the upper plate 24 by rivets 27. The ignition coil 19 is detachably screwed to the upper portion of the columnar body 26 by a bolt 28. A connection portion 29 is formed on the ignition coil 19, and a wire harness is detachably connected to the connection portion 29.

An elastic box body 31 made of resin is provided to cover the ignition coil 19.

Here, for the sake of convenience of the following description, one of the columnar bodies 26 located on the front right side is referred to as a first columnar body 26a.
The second cylinder 26b, which is diagonally opposite to the second cylinder 26a,
Same as above, the one located on the left side of the first cylindrical body 26a is referred to as a third cylindrical body 26c, and the one on the diagonal line with the third cylindrical body 26c is referred to as a fourth cylindrical body 26d.

An arc-shaped fitting portion 32 is integrally formed on the front right inner surface of the box body 31. The fitting portion 32 is the first cylindrical body 26a.
The outer peripheral surface of the
It is slidable around the axis of the first cylindrical body 26a on the outer peripheral surface thereof. Then, with the fitting portion 32 of the box body 31 fitted to the first columnar body 26a as it is, the fitting portion 32 is slid with respect to the outer peripheral surface of the first columnar body 26a. As a result, the box 3 is provided around the first cylindrical body 26a.
1 is reciprocally rotatable left and right (see arrow R in FIG. 1).
Illustrated).

The box body 31 has an opening 33 on the surface facing the left side wall 18 of the front cylinder row 2, and when the box body 31 is rotated leftward as shown by the phantom line in FIG. 1, The ignition coil 19 can be exposed to the outside of the box body 31 through the opening 33.

On the other hand, as shown by the solid line in each figure, the box body 31 is attached to the left side wall 18
When it is turned back toward the side, the box body 31 ignition coil 19 is covered. The lower surface of the box body 31 is open, so that the ignition coil 19 is entirely covered by the left side wall 18, the upper plate 24 of the bracket 22, and the box body 31.

When the box body 31 covers the ignition coil 19 as described above,
A locked portion 34, which is locked to the second columnar body 26b so as to be detachably engaged from the outside in the radial direction of the second columnar body 26b, is the same as the above box body 31.
Is integrally formed on the inner surface on the left side behind the rotation end side. The locked portion 34 has a U-shaped concave portion in a plan view, and the concave portion elastically sandwiches the second cylindrical body 26b in the radial direction, so that the second cylindrical body is formed. Locked to 26b.

Further, as described above, the locked portion 34 has the second cylindrical body 26b.
When the fitting portion 32 is locked to the first cylindrical body 26a, the fitting portion 32 also elastically comes into pressure contact with the first cylindrical body 26a. The box body 31 is firmly supported on the bracket 22 side by the locking of the locked portion 34 with respect to the cylindrical body 26b.

Further, as described above, when the box body 31 is supported on the bracket 22 side, the arc-shaped pressure contact portion 36 that pressure-contacts the outer peripheral surface of the third cylindrical body 26c is formed on the front left inner surface of the box body 31, Moreover, the rear hooks 37, 38 are integrally formed with the box body 31 before being joined to the lower surface of the upper plate 24. In this case, the fitting portion 32,
The locked portion 34 and the front and rear hooks 37 and 38 are configured to elastically sandwich the upper surface plate 24 from above and below, and the box body 31 is formed by the pressure contact portion 36 and the front and rear hooks 37 and 38 described above. Is further firmly supported on the engine 1 side via the bracket 22 without rattling.

On the other hand, when removing the box body 31 from the bracket 22 side, the box body 31 is rotated forward so as to be separated from the left side wall 18,
The locked portion 34 may be disengaged from the second cylindrical body 26b, and then the fitting of the fitting portion 32 to the first cylindrical body 26a may be released. In addition, 39 is a connection port of the wire harness for the connection portion 29, which is formed in the box body 31.

Although the above is based on the illustrated example, the box body 31 is an ignition coil.
The shape may be such that the 19 and the bracket 22 are integrally covered.

(Effects of the Invention) According to the present invention, the following effects are produced.

That is, first, the intake system member is present above the outer wall of the engine of the automobile, and the outer wall is provided with the upper plate and the first and second columnar bodies protruding upward from the upper plate. When supporting the accessory, the box that covers this accessory is
The first columnar body is reciprocally rotatable around the first columnar body, and the outward rotation allows the accessory to be exposed to the outside of the box body.

For this reason, since the box body rotates substantially horizontally, it is possible to prevent the intake system member from interfering with the box body, and the box body can be smoothly rotated.

Secondly, the fitting portion of the box body is adapted to be fitted into and removed from the first columnar body, which is the center of rotation of the box body, from the outside in the radial direction.

Therefore, by rotating the box body around the first columnar body to a predetermined position, the box body can be detached from the first columnar body as it is.

Therefore, when the box body is detached from the engine side for the purpose of maintenance and inspection work of the accessory, the work can be easily performed, so that the maintenance and inspection work of the accessory parts can be easily performed.

Third, when the box covers the accessory, the box is second
While being locked to the columnar body by the locked portion, the locked portion and the hook elastically sandwich the upper surface plate,
Therefore, the box body is held without rattling on the engine side.

Therefore, even if the engine is driven and vibrates, the cover device having the box body is prevented from rattling.

Fourthly, the first columnar body for supporting the accessory parts of the engine is used for the rotation of the box body, and therefore, a separate pivot support is provided for making the box body rotatable. No axis is needed.

Therefore, an increase in the number of parts due to the rotation of the box body is suppressed, and the structure of the cover device is correspondingly simplified.

Fifthly, an opening is formed in the surface of the box body that faces the outer side wall of the vehicle engine in the vehicle width direction, that is, the opening is opened outward.

For this reason, since the traveling wind of the automobile normally flows from the front to the rear, the traveling wind easily enters the box body through the opening, and the internal pressure of the box body increases. , Is prevented.

Therefore, it is prevented that the locking of the box body with respect to the engine side via the upper plate or the columnar body is abruptly released due to the increase of the internal pressure in the box body due to the running wind.

[Brief description of the drawings]

1 shows an embodiment of the present invention. FIG. 1 is a partially enlarged sectional view of FIG. 2, FIG. 2 is an overall plan view, and FIG. 3 is III of FIG.
-III sectional view taken along the arrow, FIG. 4 is a partial sectional view taken along the line IV-IV of FIG. 1, and FIG. 5 is a perspective partial cutaway view of the cover device. 1 ... Engine, 6 ... Surge tank (intake system member),
18 ... Left side wall (outer side wall), 19 ... Ignition coil (accessory part), 20 ... Cover device, 22 ... Bracket, 24 ... Top plate, 26 ... Cylindrical body, 26a ... First cylinder Body, 26b ... second cylinder, 31 ... box, 32 ... fitting part, 33 ... opening,
34: Locked part, 38: Rear hook.

Claims (1)

(57) [Claims] 1. An automobile engine has an intake system member that protrudes outward from the outer wall above the outer wall in the vehicle width direction, and a bracket is attached to the outer wall. It has a top plate that extends horizontally from the outer wall toward the outside, and a plurality of cylinders that project upward from this top plate are provided, and these cylinders are used to support accessory parts of the engine. In a cover device for an accessory of an engine, which is provided with a resin-made box body for covering, in the outer peripheral surface of a first columnar body among the plurality of columnar bodies, the same is removably fitted from the outer side in the radial direction. A fitting portion that is slidable around the axis of the first cylindrical body is formed on the outer peripheral surface of the first cylindrical body in the same box body.
By sliding the fitting portion with respect to the outer peripheral surface of the first cylindrical body, the box body is reciprocally rotatable around the first cylindrical body, and the box body faces the outer wall of the engine. When an opening is formed on the surface of the box, the accessory can be exposed to the outside of the box through the opening by the forward rotation of the box, and the box covers the accessory by the backward rotation of the box. A locked portion that is locked to the second cylindrical body from the outside in the radial direction of the plurality of cylindrical bodies so as to be engageable and disengageable from the outside in the radial direction, is formed on the rotating end side of the box body, and A cover device for an accessory part of an engine, in which a hook for elastically sandwiching the upper plate from above and below is formed in a box body in cooperation with a locking portion.