JPH0628459U - Clamp - Google Patents

Abstract

(57) [Summary] [Purpose] Even when the inside of the bend of the pipe is deformed when the outer half of the bend in the bent portion of the pipe is covered with a covering material and fastened and fixed to each other, the bending of the pipe We propose a clamp that can be securely tightened at the part. [Structure] A pair of sheet metal parts 10 and 11 each having an arc of about ¼ of the circumference and having a flange bent at one end thereof are provided.
These are arranged in a semicircle. The other ends of both sheet metal parts 10 and 11 are connected by a wire 12. The flanges 10a and 11a are fastened and connected with a bolt 15 and a nut 16.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a clamp for fastening and fixing a pipe and a member covering the pipe.

[0002]

[Prior art]

 Conventionally, for example, in an exhaust pipe of an internal combustion engine, a protector may be put on the outer periphery of the exhaust pipe in order to protect the exhaust pipe. In this case, the protector needs to be fastened and fixed to the exhaust pipe.

As a clamp for tightening and fixing the same, conventionally, as shown in FIGS. 6 and 7, a main body 1 formed by forming a sheet metal into an end ring shape, and flanges 2 and 3 formed by bending the both ends thereof, There is a clamp 6 consisting of a bolt 4 and a nut 5 for tightening the flanges 2, 3.

[0004]

[Problems to be solved by the device]

 By the way, in the exhaust pipe of the internal combustion engine, as shown in FIG. 8, a bent portion 7a is formed in order to connect the exhaust pipe 7 to another component, for example, a sub muffler 8, and a protector is provided on the outer peripheral half surface of the bent portion 7a. 9 may be coated.

In this case, if the bent exhaust pipe 7 and the protector 9 are fastened together by the conventional clamp 6, the following problems occur. That is, when the exhaust pipe 7 having a perfect circle is bent, the inside of the bend may be compressed and deformed inwardly of the pipe, and the bent portion 7a may not be a perfect circle.

Therefore, when the main body portion 1 is tightened by the clamp 6 formed of sheet metal in the bent portion 7a, the inner portion 7b of the bent portion 7a and the main body portion 1 of the clamp exhaust as shown in FIG. There is a problem that the entire circumference of the pipe 7 cannot be tightened uniformly, and the protector 9 is not firmly fixed to the exhaust pipe 7.

As a tightening method for solving this problem, as shown in FIG. 9, the exhaust pipe 7 is extended slightly linearly from the end of the bending, and the straight part 7c of the perfect circle is used to clamp the conventional clamp. It is also conceivable to tighten the protector 9 by 6 or to directly weld the protector to the exhaust pipe 7 without using a clamp.

However, in the former method, there is a problem that the cost of the protector mold becomes expensive and it is difficult to mount due to the space of the vehicle, and in the latter method, the protector may be cracked by heat. is there.

Therefore, the present invention has an object to propose a clamp capable of solving the above-mentioned problems when tightening another member in a bent portion of an exhaust pipe or another pipe.

[0010]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has a sheet metal part (10) having a circular arc of about ¼ of the circumference, and a flange (10a) bent at one end thereof, and the sheet metal part (10). ) And another sheet metal part (11) of the same shape are symmetrically arranged to form a semicircular shape, and the other ends of the sheet metal parts (10) and (11) are connected by a wire (12). Further, the flanges (10a) and (11a) of both sheet metal parts (10) and (11) are tightened and connected by bolts (15) and nuts (16).

[0011]

[Action]

 When a bent pipe (7a) such as an exhaust pipe is covered with a covering material (9) on the outer half surface of the bend and these are fastened and fixed to each other, the wire (12) of the clamp of the present invention is used. , The inner half of the bend of the tube (7a), and the sheet metal parts (10), (11) on the outer half of the covering (9) covering the outer half of the bend of the tube (7a).

Then, the flanges (10a) and (11a) are tightened and connected by a bolt (15) and a nut (16). At this time, when the inner half surface of the bend of the pipe (7a) is deformed during bending and the cross section of the pipe (7a) is not a perfect circle, the wire (12) has flexibility. Abut along the deformed surface of the tube. On the other hand, since the outer half of the bend of the pipe (7a) is not easily deformed, the sheet metal parts (10) and (11) come into contact with each other along the outer surface of the covering material (9).

[0013]

【Example】

 Next, a first embodiment of the clamp of the present invention shown in FIGS. 1 to 3 will be described. Numeral 10 is one sheet metal portion formed in an arc of about 1/4 of the circumference. A flange portion 10a is bent outward at one end thereof, and a bolt hole 10b is formed in the flange portion 10a. An insertion hole 10c is formed.

Reference numeral 11 denotes another sheet metal portion formed in the same manner as the sheet metal portion 10, and has a flange portion 11a, a bolt hole 11b, and a wire insertion hole 11c as described above. Then, the sheet metal parts 10 and 11 are symmetrically aligned as shown in the drawing to form a semi-circular tightening part.

Reference numeral 12 is a wire, both ends of which are inserted into the wire insertion holes 10c and 11c of the sheet metal parts 10 and 11 and folded back, and fixed by fasteners 13 and 14 and connected to the sheet metal parts 10 and 11. Has been done. Further, the length of the wire 12 is determined so as to be formed in the same semicircle as the semicircle formed by the metal plates 10 and 11 when the wire 12 is formed in an arc shape.

Reference numeral 15 denotes a bolt which is inserted into both the bolt holes 10a and 11a, and 16 denotes a nut. Next, an example in which the protector is fastened to the bent portion of the exhaust pipe by the clamp of this embodiment will be described.

In FIG. 4, reference numeral 7 a denotes a bent portion of the exhaust pipe 7 shown in FIG. 8, and a protector 9 is covered along the outer side of the bent portion. The protector 9 is formed of a metal plate, and its tightening portion 9a abuts on the outer peripheral surface of the exhaust pipe 7a, and the other portions are separated from the outer surface of the exhaust pipe 7a.

In tightening, the sheet metal parts 10 and 11 are opened from each other, the wire 12 is hooked on the inner half surface of the bend of the bent portion 7 a of the exhaust pipe 7, and the sheet metal parts 10 and 11 are bent outside. The bolt 15 is applied to the half surface and inserted into the bolt holes 10b and 11b of the sheet metal parts 10a and 11a.

At this time, even if the inside of the bent portion 7a is deformed into a non-perfect circle, the wire 12 has flexibility, so that the wire 12 abuts along the deformed inside. Therefore, the wire 12 uniformly tightens the inner half surface of the bent portion 7a of the exhaust pipe 7, and the sheet metal parts 10 and 11 uniformly tighten the entire tightening surface of the protector 9. Therefore, the protector can be securely fastened at the bent portion.

FIG. 5 shows another embodiment of the clamp of the present invention. This embodiment shows another structure in which a wire is connected to the other ends of the sheet metal parts 10 and 11, and the other ends of the sheet metal parts 10 and 11 are bent outward to form a wire connecting part 10d. 11d is formed, and the connecting ring portions 12a and 12b are formed at both ends of the wire 12. Then, the connecting ring portions 12a and 12b are hooked on the wire connecting portions 10d and 11d to connect the sheet metal portions 10 and 11 to the wire 12. The members designated by the same reference numerals as those in the above embodiment are the same as those in the above embodiment.

Also in this embodiment, the same effect as the above embodiment can be exhibited. In the above description, the clamp of the present invention is described as an example in which the exhaust pipe and the protector are fastened and fixed. Of course, it can be applied to the case where the outer half surface is covered with another member and is fastened and fixed to the pipe.

[0022]

[Effect of device]

 As described above, according to the clamp of the present invention, when another member is covered and fixed to the bent portion of the pipe, even if the pipe of the bent portion is deformed, both are securely fastened to each other at the bent portion. Can be fixed.

Therefore, for example, when a protector is coated on a bent portion of an exhaust pipe of an internal combustion engine, the pipe is extended excessively linearly and the protector is extended as in the conventional case, and a clamp is applied at the extended portion. Therefore, it is not necessary to tighten and fix. As a result, the increase in weight and cost due to this extension can be prevented. Furthermore, since no welding is used, cracking of the protector due to heat does not occur.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the clamp of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view showing a usage state.

FIG. 5 is a perspective view showing a second embodiment of the clamp of the present invention.

FIG. 6 is a perspective view showing a tightened and fixed state by a conventional clamp.

FIG. 7 is a sectional view of the same side.

FIG. 8 is a view showing a conventional fastening and fixing state.

FIG. 9 is a view showing another conventional fastening state.

[Explanation of symbols]

 10, 11 Sheet metal part 10a, 11a Flange 12 Wire 15 Bolt 16 Nut

Claims (1)

[Scope of utility model registration request] 1. A sheet metal part (10) having a circular arc of about ¼ of a circumference and having a flange (10a) bent at one end thereof.
And another sheet metal part (11) having the same shape as the sheet metal part (10)
And are symmetrically arranged to form a semicircular shape, and the sheet metal parts (1
0) and (11) are connected between the other ends by wires (12), and the flanges (10) of both sheet metal parts (10) and (11) are further connected.
a), (11a) to bolt (15) and nut (16)
A clamp that is characterized by tightening and connecting with.