JP3047604B2 - Clamp for pipe member - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clamp for a pipe member.

[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 a clamp for another pipe member are protruded from the clamp body. Tube member clamps are known (Japanese Utility Model Application Laid-Open No. 61-61).
No. 157781). In this tube member clamp, a plurality of tube members arranged substantially in parallel are fitted into separate clamp bodies, and then the connecting portions of the clamps into which these tube members are fitted are connected to each other, A plurality of pipe members can be mutually stopped.

[0003]

However, in this tube member clamp, a plurality of tube members are fitted one by one into separate clamp bodies, and then the connecting portions of the clamps into which these tube members are fitted are sequentially connected. It is necessary to link them. As described above, there is a problem in that the work for the clamp for pipe members takes a long time due to the large number of work steps. Further, there is a problem that an excessive force is likely to be applied to the pipe member during the operation of connecting the connecting portions of the clamps, and as a result, distortion due to assembly to the pipe member is likely to occur. When a plurality of hard pipes such as metal pipes used in a vibration environment are clamped to each other by a clamp, it is necessary to use a strong clamp to satisfactorily reduce the vibration of these pipe members. Become. However, when the hard tubes are fixed to each other by using the hard and strong clamps as described above, it becomes difficult to fit the hard tubes into the respective clamp bodies and to connect the connecting portions of the clamps to each other. Is deteriorated.

[0004]

According to the present invention, there is provided a tube member clamp for mutually stopping a plurality of tube members arranged substantially in parallel with each other. It has a plurality of fitting parts for inserting
Insert the tool along an axis approximately parallel to the axis of each pipe member.
With a tool insertion hole for insertion into the tool insertion hole
By rotating the tool and rotating the clamp about an axis substantially parallel to the axis of each tube member, the position and shape of each mating portion is formed so that each tube member is simultaneously fitted into the corresponding mating portion. ing.

[0005]

[Action] The tool inserted into the tool insertion hole is rotated to
By rotating the lamp, multiple tube members
To be simultaneously fitted into the fitting part with one touch.
To fit each pipe member into the corresponding fitting section
As compared with the case, the number of work steps can be reduced. Also,
The relative position of each fitting should be in advance for each pipe member
When combined with the relative positional relationship,
Unnecessary stress is not applied to the pipe member, and distortion due to assembly
It can be greatly reduced. In addition, the good
Since good workability can be obtained, a relatively hard tube
The clamp is made of high quality, strong material.
It can be easily and firmly fitted.

[0006]

FIG. 1 shows a case where the present invention is applied to mutually stop a plurality of fuel pipes of an internal combustion engine. Referring to FIG. 1, reference numeral 1 denotes an engine block of a four-cylinder internal combustion engine;
Denotes fuel injection pumps fixed to the engine block 1. Four fuel pipes 4 are provided on the discharge side of the fuel injection pump 2.
Are respectively connected via cap nuts 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 assemble with each other and extend substantially parallel at their end regions located near the cap nut 6. In the end area of each fuel pipe 4 near the cap nut 6, the four fuel pipes 4 are mutually stopped by one pipe member clamp 10.

Next, the structure of the tube member clamp 10 will be described with reference to FIGS. As shown in FIGS. 2 and 3, the tube member clamp 10 has a flat plate shape as a whole, and has four fitting portions 12 around which four fuel tubes 4 are fitted. FIG.
In the embodiment shown in FIG. 3, four fuel pipes 4
Since they are arranged at 90 ° intervals around the zero axis KK,
Each fitting portion 12 of the clamp 10 is formed at 90 ° intervals around the axis KK. In the embodiment shown in FIGS. 1 to 3, the distance from the axis KK to the center of each fitting portion 12 is 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 KK, 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 pipe 4 to be fitted. When the fuel tube 4 is fitted into the fitting portion 12, a tightening margin is given by the tapered portion 12b, so that the fuel tube 4 is securely fixed in the fitting portion 12, and the fuel tube 4 is fitted by the tapered portion 12b. 12 is prevented from coming off. As can be seen from FIG. 2, each fitting portion 12 opens in the same direction around the axis KK. In addition, the thickness of the tapered portion 12b is such that the fuel pipe 4 is
When the fuel pipe 4 is fitted into the fuel pipe 4,
It is formed in a suitable thin thickness so that it can be more elastically spread. In the embodiment shown in FIGS. 1 to 3, the four fittings 12 are formed in the same shape because the four fuel tubes 4 have the same outer diameter.
Further, a tool insertion hole 14 for inserting a tool such as a ratchet for rotating the clamp 10 around the axis KK is formed on the axis KK of the clamp 10.
In the embodiment shown in FIGS. 1 to 3, the clamp 10 is made of resin (for example, 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 zero axis KK is substantially at the center of the four fuel pipes and the axis KK is substantially parallel to the axis of the fuel pipe 4. Next, a tool such as a ratchet is inserted into the tool insertion hole 14 of the clamp 10,
By using this ratchet, the clamp 10 is rotated around the axis KK to simultaneously fit the corresponding fuel pipes 4 into the fitting portions 12.

As described above, in the clamp 10, a plurality of fuel tubes 4 can be simultaneously fitted into the corresponding fitting portions 12 with one touch, so that the number of work steps for mounting the clamp 10 is small, and the working time is greatly reduced. Can be shortened. Further, since the relative positions of the fitting portions 12 are formed in advance in a relative positional relationship that should be the original of the fuel tubes 4 and all the fuel tubes 4 are fitted at the same time, it is impossible to fit the fuel tubes 4 when the clamp 10 is mounted. No stress is applied.
Therefore, the distortion generated in the fuel pipe 4 by the mounting of the clamp 10 can be greatly reduced. In particular, when compared to a conventional pipe member clamp which requires the tube member to be fitted to be bent and pressed into the fitting portion, or, conversely, the clamp to be bent to mount the clamp, Pipe member clamp 10
In this case, the distortion caused by the assembling can be greatly reduced. Further, when the clamp 10 is assembled, distortion due to the assembly occurs 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, a large force is not applied to each fuel pipe 4 when the clamp 10 is assembled as described above, and the clamp 10 is connected to the fuel pipe 4 at a position close to the fuel injection pump 2 and the cap nut 6. Therefore, assembling distortion generated in the end region of the fuel pipe 4 can be significantly reduced.

Further, since the fuel pipe 4 is caused to vibrate relative to the fuel injection pump 2 by the engine vibration, distortion due to the vibration occurs in an end region of the fuel pipe 4 fixed to the fuel injection pump 2. . In the embodiment shown in FIGS. 1 to 3, the clamps 10 mutually stop the fuel pipes 4 at positions close to the fuel injection pump 2, so that the vibration distortion generated in the end region of the fuel pipes 4 is also greatly reduced. Can be done. In addition, since the clamp 10 provides good mounting workability as described above, the plurality of fuel pipes 4 made of a relatively hard material are connected to the clamp 10 made of a hard and strong material.
Can be easily fitted into each fitting portion 12.
By using the clamp 10 made of a hard and strong material in this way, each fuel pipe 4 can be more securely stopped,
In this way, the distortion caused by the vibration generated in the end region of the fuel pipe 4 is further reduced.

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

FIG. 4 shows another embodiment. Note that the same reference numerals are used for the same components as those in the embodiment shown in FIGS. In the embodiment shown in FIGS. 2 and 3, the distance from the axis KK serving as the center of rotation of the clamp 10 to the center of each fitting portion 12 is 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 in parallel to each other have different intervals.

Although the embodiment in which the four pipe members are mutually stopped by the clamp 10 has been described,
The present invention can be similarly applied to any number of pipe members. Further, the plurality of pipe members are connected to the axis KK
The present invention can be similarly applied to a case in which they are not arranged at equal angular intervals around. Further, the outer diameters of the respective pipe members may be different from each other. Each pipe member may be a hollow pipe or a solid pipe.

[0014]

According to the present invention, the tool inserted into the tool insertion hole is rotated.
And rotating the clamp, multiple pipe members
One-touch fitting simultaneously into corresponding fittings
For this purpose, each pipe member is sequentially fitted into the corresponding fitting section.
As a result, the number of man-hours can be reduced. Ma
In addition, the relative position of each fitting part is originally
Coupled with the power
Unreasonable stress is not applied to the pipe member during installation, and distortion due to assembly
Can be greatly reduced. Further, as described above
A relatively hard pipe member
In the fitting area of the clamp made of hard and strong material.
Can be easily and firmly fitted.

[Brief description of the 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.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Clamp 12 ... Fitting part 12a ... Semi-cylindrical part 12b ... Tapered part 14 ... Tool insertion hole

Claims (1)

(57) [Claims] 1. A tubular member for a clamp to stop mutually substantially parallel-arranged plurality of tubular members, provided with a plurality of fitting portions for fitting s husband each tubular member, the upper
Place the tool along an axis approximately parallel to the axis of each pipe member.
It has a tool insertion hole for insertion, and
By rotating the inserted tool and rotating the clamp about an axis substantially parallel to the axis of each tube member, the position of each fitting is such that each tube member is simultaneously fitted into the corresponding fitting portion. And a clamp for a pipe member having a shape.