JP3094718B2 - Positioning jig - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positioning jig, and more particularly to a positioning jig for easily attaching a mounting member to a member to be mounted at a predetermined angle or position.

[0002]

2. Description of the Related Art For example, an oil hose for supplying lubricating oil to the inside of a cylinder head of a four-stroke engine mounted on a motorcycle is formed in a predetermined shape with a metal pipe such as copper. The oil hose, for example, the hose end is attached to the lubricating oil supply port of the cylinder head with a union bolt, etc.When installing the oil hose,
The mounting angle of the end of the hose is set in advance so that the oil hose is not damaged by an external force and does not come into contact with other parts of the engine.

[0003]

However, although there is no means for confirming the mounting angle of the oil hose at the mounting position of the oil hose on the cylinder head, the mounting of the above-mentioned oil hose has not been special. No simple jig was used, and it was easily positioned and attached visually or using a simple gauge.

When the union bolt is tightened, the end of the hose is rotated by the bolt, and the mounting position of the end of the hose may become unstable or the oil hose may be damaged. However, it is necessary to hold the oil hose with a large force in order to prevent the hose end from rotating due to the bolt.

The present invention has been made in view of the above-mentioned circumstances, and provides a positioning jig for easily attaching an attachment member such as an oil hose to an attachment target member at a predetermined angle or position. The purpose is to:

[0006]

According to a first aspect of the present invention, there is provided a positioning jig for mounting a mounting member on a mounting jig. A jig body having a jig body molded so as to be able to engage with the portion, and a concave portion capable of holding the mounting member to be fastened to the mounting target member at a preset angle or position is formed on the jig body. In addition, a hole in which a tool for fixing the mounting member is inserted is provided in the recess, and a handle is provided on the jig body.

[0007]

According to the present invention having the above structure, the jig for mounting the mounting member has a jig body molded so as to be able to engage with the projection of the mounting target member, and is fastened to the mounting target member. The jig body is formed with a recess capable of holding the mounting member at a preset angle and position, and a hole is provided in the recess so that a tool for fixing the mounting member can be inserted. Since the handle is provided on the tool body, the attachment member can be easily attached to the attachment target member at a preset angle and position.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a left side view showing an example of a DOHC four-cycle four-cylinder engine for a motorcycle to which the present invention is applied. FIG. 2 is a plan view of the engine.

As shown in FIGS. 1 and 2, the engine 1 mainly comprises a cylinder head cover 2, a cylinder head 3, a cylinder block 4, and a crankcase 5 which can be divided up and down.

An intake / exhaust valve mechanism (not shown) is provided in the cylinder head 3. A camshaft, which is an intake / exhaust valve opening / closing mechanism (not shown), is provided above the cylinder head 3 in parallel in front and rear positions, and is closed by the cylinder head cover 2.

A piston (not shown) is slidably held in the cylinder block 4 in the vertical direction. The piston is connected to a crankshaft (not shown) provided in the crankcase 5 via a connecting rod (not shown). .

On the other hand, since the engine 1 has many sliding parts and rotating parts, the frictional resistance and frictional heat of each part are reduced, and the lubricating oil is provided inside the engine 1 so that the function of the engine 1 can be sufficiently exhibited. Is supplied and circulated.

For this reason, the engine 1 has an oil pump (not shown) in the crankcase 5, and the oil pump supplies lubricating oil to each part in the engine 1 under pressure.

For example, around the camshaft in the cylinder head 3, lubricating oil supply provided on the left and right sides of the cylinder head 3 via oil hoses 7 a and 7 b from a lubricating oil outlet 6 provided at the upper center of the crankcase 5. Mouth 8a, 8b
Is supplied with lubricating oil. The oil hoses 7a and 7b are formed in a predetermined shape with a metal pipe such as copper. The oil hoses 7a and 7b have hose ends 9a and 9b as attachment members at one end. The hose ends 9a and 9b are connected to the cylinder head 3 as an attachment target member by, for example, union bolts 10a and 10b. Lubricating oil supply port 8
a, 8b via a gasket 11.

FIGS. 3A and 3B are views showing the left side and right side of the cylinder head 3. FIG.

3 (a) and 3 (b), hose ends 9a, 9b of oil hoses 7a, 7b are connected to lubricating oil supply ports 8a, 8b provided at the rear side of the cylinder head 3.
However, since the oil hoses 7a and 7b are formed in a predetermined shape, in the present embodiment, the hose ends 9a and 9b are attached to be inclined forward by 20 degrees with respect to the vertical axis. Reference numerals 12a and 12b denote plug bolts for closing the holes after processing the oil passages in the cylinder head 3.

FIG. 4 shows a positioning jig 1 to which the present invention is applied.
3 is a plan view of FIG. FIG. 5 is a sectional view taken along the line AA of FIG. 4, and FIG. 6 is a view taken along the arrow X in FIG.

4, 5 and 6, the jig body 14 of the positioning jig 13 is formed by machining a sticky material, for example, carbon steel for machine structure such as S45C. The shape of the jig body 14 is the same as that of the cylinder head 3.
It is molded into, for example, the shape of a tongue so as to be engageable with the side projection 19 and to be symmetrical to the left and right.

At both ends of the jig body 14, hose ends 9 are provided.
Tools for fastening the union bolts 10a and 10b for fixing the a and 9b, for example, wrench holes 15a and 15b into which the ends of the impact wrench can be inserted are provided. These wrench holes 15a, 15b are provided corresponding to the intervals between the lubricating oil supply ports 8a, 8b on the side of the cylinder head 3 and the plug bolts 12a, 12b.

Further, each wrench hole 15a, 15
A concave portion 16a, which has a shape that allows the hose ends 9a, 9b to be fitted and held at a constant widening angle outward from the center of b, for example, 20 degrees with respect to the vertical axis in this embodiment.
16b is provided alongside the wrench holes 15a and 15b. Also,
At the center of the jig body 14, a lightening hole 17 for weight reduction is provided.
Is provided. Further, a handle 18 formed of a metal pipe or the like is attached to the side of the jig body 14.

Next, the operation of this embodiment will be described.

FIGS. 7A and 7B show an example in which the positioning jig 13 of the present invention is set on the left and right sides of the cylinder head 3 to be attached.

The mounting of the oil hoses 7a, 7b
(A) and (b) as shown in FIG.
Hose ends 9a, 9b, which are attachment members for a and 7b, are temporarily fixed to lubricating oil supply ports 8a, 8b with union bolts 10a, 10b.

Next, the jig body 14 of the positioning jig 13 is set on the side of the cylinder head 3 to be attached. At this time, the wrench holes 15a and 15b of the jig body 14 are set.
To the lubricating oil supply ports 8a, 8b and the plug bolts 12a, 12
b, and the jig body 14 is engaged with the projection 19 on the side of the cylinder head 3. Then, hose ends 9a, 9 as attachment members are provided in the recesses 16a, 16b of the jig body 14.
By fitting b, the mounting angles of the oil hoses 7a and 7b are determined and maintained.

After the mounting angles of the oil hoses 7a, 7b are determined and maintained, the user grips the handle 18 of the positioning jig 13 and inserts a tool such as a wrench (not shown) into the wrench holes 15a, 15b.
b, fitted to the union bolts 10a, 10b, and rotated clockwise to tighten. At this time, as shown in FIG. 7A, the hose end 9a is located on the left side of the cylinder head 3.
Is applied to the α portion of the jig body 14,
Then, the force applied to the jig body 14 is received by the β portion of the protrusion 19 on the side of the cylinder head 3. On the other hand, on the right side of the cylinder head 3, as shown in FIG. 7 (b), the rotational force applied to the hose end 9b is applied to the γ portion of the jig body 14, and the force applied to the jig body 14 is It is received at the δ portion of the side projection 19.

As described above, according to the above-described procedure, the oil hoses 7a and 7b can be easily attached to the designated positions at the designated angles without using excessive force.

Further, since the mounting work on both the left and right sides can be performed by one jig, there is no need to switch to another jig on the left and right, and there is no mistake in the operation method of the jig.

Further, the oil hoses 7a and 7b are securely mounted at a predetermined angle so that the oil hoses 7a and 7b are not damaged by an external force and the oil hoses 7a and 7b do not contact other parts of the engine 1. As a result, stable products can always be supplied.

By attaching the handle 18 to the jig main body 14, the jig main body 14 can be installed even in a narrow and complicated place, and the workability is improved.

In this embodiment, the positioning jig 13 has been described as an example in which the oil hoses 7a and 7b are attached to the engine 1 of the motorcycle. However, the positioning jig 13 needs to be attached to a predetermined angle or position. Applicable to equipment.

[0032]

As described above, according to the positioning jig according to the present invention, in the jig for mounting the mounting member,
The jig has a jig body molded so as to be able to engage with the projection of the attachment target member, and has a recess capable of holding the attachment member to be fastened to the attachment target member at a preset angle and position. On the other hand, a hole for receiving a tool for fixing the mounting member is provided in the recess, and a handle is provided on the jig main body, so that a quick and accurate mounting operation of the mounting member can be guaranteed. The member can be easily attached at a preset angle or position.

[Brief description of the drawings]

FIG. 1 is a left side view showing an example of a four-stroke engine for a motorcycle to which the present invention is applied.

FIG. 2 is a plan view showing an example of a four-cycle engine for a motorcycle to which the present invention is applied.

FIGS. 3A and 3B are diagrams showing a left side surface and a right side surface of a cylinder head.

FIG. 4 is a plan view showing an embodiment of a positioning jig according to the present invention.

FIG. 5 is a sectional view taken along the line AA of FIG. 4;

FIG. 6 is a view taken in the direction of the arrow X in FIG. 4;

FIGS. 7A and 7B are diagrams showing examples in which the present invention is set on the left and right sides of a cylinder head, respectively.

[Explanation of symbols]

 Reference Signs List 1 engine 3 cylinder head (attachment target member) 7a, 7b oil hose 8a, 8b lubrication oil supply port 9a, 9b hose end (attachment member) 10a, 10b union bolt 13 positioning jig 14 jig body 15a, 15b wrench hole 16a, 16b recess

Claims (1)

(57) [Claims] 1. A jig for attaching an attachment member, the jig having a jig body molded so as to be engageable with a projection of the attachment target member, wherein the attachment member to be fastened to the attachment target member is set in advance. The jig body is formed with a recess that can be held at the set angle and position, and the recess is provided with a hole through which a tool for fixing the mounting member can be inserted, and a handle is provided on the jig body. A positioning jig characterized by the above.