JPH05256380A - Clamp for pipe member - Google Patents

Abstract

(57) [Abstract] [Purpose] In a pipe member clamp for mutually stopping a plurality of pipe members arranged substantially in parallel, all pipe members are quickly and simultaneously stopped. [Structure] A pipe member clamp 10 made of resin or hard rubber has a flat plate shape as a whole, and four fitting portions 12 are formed in the peripheral portion thereof. Each fitting portion 12 is composed of a semi-cylindrical portion 12a and a tapered portion 12b. A tool insertion hole 14 is formed in the center of the clamp 10. The clamp 10 is inserted between the four tube members 4 arranged substantially in parallel so that the axis of the clamp 10 is substantially parallel to the axis of each tube member 4. Then, a ratchet or the like is inserted into the tool insertion hole 14 to rotate the clamp 10 around the tool insertion hole 14. As a result, the pipe members 4 are simultaneously fitted into the corresponding fitting portions 12.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a clamp for pipe members.

[0002]

2. Description of the Related Art A clamp body for detachably holding a pipe member is provided, and a pair of connecting portions for detachably connecting to another clamp for pipe member is provided on the clamp body. Clamps for pipe members are known (Shokai Sho 61-
157781). In this pipe member clamp, a plurality of pipe members arranged substantially in parallel are fitted in separate clamp bodies, and then the connecting portions of the clamps in which these pipe members are fitted are connected to each other, A plurality of pipe members can be stopped together.

[0003]

However, in this clamp for pipe members, a plurality of pipe members are fitted one by one in separate clamp bodies, and then the connecting portions of the clamps into which these pipe members are fitted are successively connected. It is necessary to connect them. As described above, there is a problem in that this clamp for pipe members requires a lot of man-hours, and thus the work takes time. Further, there is a problem that an excessive force is likely to be applied to the pipe member during the work of connecting the connecting portions of the clamps, and as a result, the pipe member is likely to be distorted due to the assembly. Further, when a plurality of hard pipes such as metal pipes used in a vibrating environment are clamped to each other, it is necessary to use a strong clamp to reduce the vibration of these pipe members. Become. However, when trying to stop the hard pipes with each other using such a hard and strong clamp, it becomes difficult to fit the hard pipe into each clamp body and it becomes difficult to connect the connecting parts of each clamp, resulting in workability. Causes a problem that is worse.

[0004]

In order to solve the above problems, according to the present invention, in a pipe member clamp for mutually stopping a plurality of pipe members arranged substantially in parallel, the pipe members are respectively fitted. Equipped with a plurality of fitting parts for fitting,
The positions and shapes of the fitting portions are formed so that the respective pipe members can be simultaneously fitted into the corresponding fitting portions by rotating the clamps about the axes that are substantially parallel to the axes of the respective pipe members.

[0005]

By rotating the clamp about the axis substantially parallel to the axis of each pipe member, each pipe member is simultaneously fitted into the corresponding fitting portion.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a case where the present invention is applied to stop a plurality of fuel pipes of an internal combustion engine from each other. Referring to FIG. 1, 1 is an engine block of a 4-cylinder internal combustion engine, 3
Indicate fuel injection pumps fixed to the engine block 1, respectively. Four fuel pipes 4 are provided on the discharge side of the fuel injection pump 2.
Are each connected via a cap nut 6, and each fuel pipe 4 is connected to a fuel injection valve (not shown) provided for each cylinder. As shown in FIG. 1, the fuel tubes 4 gather in their end regions located in the vicinity of the cap nuts 6 and extend substantially parallel to each other. In the end region of each fuel pipe 4 near the cap nut 6, the four fuel pipes 4 are fixed to each other by a single pipe member clamp 10.

Next, the structure of the clamp 10 for a pipe member will be described with reference to FIGS. 2 and 3. As shown in FIGS. 2 and 3, the pipe member clamp 10 has a flat plate shape as a whole, and four fitting portions 12 into which four fuel pipes 4 are fitted are formed in the peripheral portion thereof. Figure 1
3 to the embodiment shown in FIG. 3, four fuel pipes 4 are clamps 1
Since they are arranged at 90 ° intervals around the axis K-K of 0,
The fitting portions 12 of the clamp 10 are formed at 90 ° intervals around the axis K-K. Further, in the embodiment shown in FIGS. 1 to 3, the distances from the axis K-K to the centers of the fitting portions 12 are formed to be equal to each other. 2 and 3
As can be seen, each fitting portion 12 is composed of a semi-cylindrical portion 12a extending parallel to the axis K-K, and a tapered portion 12b formed following the semi-cylindrical portion 12a. The inner diameter of the semi-cylindrical portion 12a of the fitting portion 12 is formed to be slightly larger than the outer diameter of the fuel tube 4 to be fitted. Further, when the fuel pipe 4 is fitted into the fitting portion 12, the taper portion 12b gives a tightening margin so that the fuel pipe 4 is firmly fixed in the fitting portion 12, and the taper portion 12b causes the fuel pipe 4 to fit therein. It is designed to be prevented from coming off from 12. As can be seen from FIG. 2, each fitting portion 12 opens around the axis KK in the same direction. Further, the wall thickness of the tapered portion 12b is such that the fuel pipe 4 is fitted into the fitting portion 1
2 is fitted into the fuel tube 4 when the tapered portion 12b
It has a suitable thin thickness so that it can be elastically spread. In the embodiment shown in FIGS. 1 to 3, since the four fuel pipes 4 have the same outer diameter, the four fitting portions 12 are formed in the same shape.
Further, a tool insertion hole 14 for inserting a tool such as a ratchet for rotating the clamp 10 around the axis K-K is formed on the axis K-K of the clamp 10.
In the embodiment shown in FIGS. 1 to 3, the clamp 10 is made of resin (eg nylon) or hard rubber.

Next, a method of mounting the clamp 10 on the fuel pipe 4 will be described. First, the four fuel pipes 4 are fixed to the discharge side of the fuel injection pump 2 via the cap nuts 6, respectively. Next, the clamp 10 is inserted between the end regions of the fuel pipe 4 located near the cap nut 6. Then clamp 1
The posture of the clamp 10 is changed so that the axis K-K of 0 is located substantially at the center of the four fuel tubes and the axis K-K is substantially parallel to the axis of the fuel tubes 4. Next, insert a tool such as a ratchet into the tool insertion hole 14 of the clamp 10,
The ratchet is used to rotate the clamp 10 around the axis K-K to simultaneously fit the corresponding fuel tubes 4 into the respective fitting portions 12.

As described above, in this clamp 10, a plurality of fuel pipes 4 can be simultaneously fitted into the corresponding fitting portions 12 with one touch, so that the number of man-hours for mounting the clamp 10 is small, and the working time is greatly increased. It can be shortened. Further, since the relative positions of the respective fitting portions 12 are formed in advance in the relative positional relationship that the respective fuel tubes 4 should originally have, and all the fuel tubes 4 are fitted at the same time, it is impossible for the fuel tubes 4 to be attached when the clamp 10 is attached. No stress is applied.
Therefore, the strain generated in the fuel pipe 4 due to the assembly of the clamp 10 can be significantly reduced. In particular, according to the present invention, when compared with a conventional clamp for a pipe member, which requires the clamp to be mounted by bending the pipe member to be fitted and pressing it into the fitting portion, or conversely, bending the clamp. Clamp 10 for pipe members
With, the distortion caused by the assembly can be significantly reduced. Further, when the clamp 10 is assembled, distortion occurs due to the assembly in the end region of each fuel pipe 4 fixed to the fuel injection pump 2. However, in the embodiment shown in FIGS. 1 to 3, as described above, a large force is not applied to each fuel pipe 4 when the clamp 10 is assembled, and the clamp 10 is located near the fuel injection pump 2 and the cap nut 6. As a result, the assembly strain generated in the end region of the fuel pipe 4 can be significantly reduced.

Further, the fuel pipe 4 is vibrated relatively with respect to the fuel injection pump 2 by the engine vibration, so that the distortion due to the vibration is generated in the end region of the fuel pipe 4 fixed to the fuel injection pump 2. .. In the embodiment shown in FIGS. 1 to 3, since the clamps 10 stop the fuel tubes 4 from each other at a position close to the fuel injection pump 2, the vibration distortion generated in the end region of the fuel tubes 4 is significantly reduced. Can be made Further, since the clamp 10 can obtain good mounting workability as described above, the clamp 10 made of a hard and strong material is used for the plurality of fuel pipes 4 made of a relatively hard material.
It can be easily fitted into each fitting portion 12 of.
By using the clamp 10 made of such a hard and strong material, each fuel pipe 4 can be more firmly fixed,
Thus, the distortion caused by the vibration generated in the end region of the fuel pipe 4 can be further reduced.

Further, in the present embodiment, the clamp 10 is formed of only one component made of resin or hard rubber, so that the lightweight and inexpensive clamp 10 can be obtained. Further, as described above, since both the stress generated in the fuel pipe 4 by the assembly of the clamp 10 and the stress generated in the fuel pipe 4 by the engine vibration are well reduced, the fuel pipe 4 has a thinner outer diameter, For example, a tube having an outer diameter of 4.5 mm can be used.

FIG. 4 shows another embodiment. The same reference numerals are used for the same components as those in the embodiment shown in FIGS. 2 and 3. In the embodiment shown in FIGS. 2 and 3, the distances from the axis KK, which is the rotation center of the clamp 10, to the center of each fitting portion 12 are formed to be equal to each other. On the other hand, in the embodiment shown in FIG. 4, the distance from the axis KK to the center of each fitting portion 12 is different from each other. The clamp 10 according to the present invention can be similarly applied to the case where the plurality of pipe members arranged substantially parallel to each other have different intervals.

Although an embodiment in which the four pipe members are mutually fixed by the clamp 10 has been described above,
The present invention can be similarly applied to any number of pipe members. In addition, the plurality of pipe members have the axis line KK
The present invention can be similarly applied to the case where they are not arranged at equal angular intervals around. Further, the outer diameter dimensions of the respective pipe members may be different from each other. Further, each pipe member may be a hollow pipe or a solid pipe.

[0014]

By rotating the clamp, it is possible to quickly and simultaneously stop all of the plurality of pipe members arranged substantially in parallel, so that good working efficiency can be obtained.

[Brief description of drawings]

FIG. 1 is a side view showing a fuel injection pump, a fuel pipe and a clamp fixed to an engine block of an internal combustion engine.

FIG. 2 is a plan view of a clamp.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a plan view of a clamp according to another embodiment.

[Explanation of symbols]

 10 ... Clamp 12 ... Fitting portion 12a ... Semi-cylindrical portion 12b ... Tapered portion 14 ... Tool insertion hole

Claims (1)

[Claims] 1. A pipe member clamp for mutually stopping a plurality of pipe members arranged substantially parallel to each other, comprising a plurality of fitting portions for respectively fitting the pipe members, and the clamps are provided with the respective fittings. A clamp for a pipe member in which the positions and shapes of the respective fitting portions are formed so that the respective pipe members are simultaneously fitted in the corresponding fitting portions by rotating about the axis line that is substantially parallel to the axis line of the pipe member.