JP2008185017A - Muffler cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a muffler cutter smart and rich in design properties, capable of easily setting and changing angles of a tip discharging exhaust gas, and capable of being installed even if size of a muffler installed on an automobile is different by making a fixing means fixed by a fixing bolt putting or not putting an upper spacer and a lower spacer installed on a metal band which can be fastened and loosened therebetween. <P>SOLUTION: The muffler cutter is provided with a cylindrical inner pipe 2 fixed around a tip of the muffler M installed on the automobile by the fixing means, an elliptic cylindrical outer pipe 3 having a shorter inner diameter larger than the outer diameter of the inner pipe 2 and having the inner pipe 2 connected thereon in a telescopic style, a bent part 3a formed on an upper part of a base end of the outer pipe 3 for making driving angles of the inner pipe 2 large, a hinge mechanism 4 connecting the inner pipe 2 and the outer pipe 3 in such a manner that the same can pivotally move, and an angle fixing means fixing the hinge mechanism 4 at fixed angles. In this case, the muffler cutter connects the cylindrical inner pipe and the elliptic cylindrical outer pipe by a nesting hinge mechanism. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a muffler cutter that is attached to the tip of a muffler equipped in an automobile, and more particularly, to a muffler cutter that a user attaches to the tip of a muffler to insist on originality and improve appearance design. Is.

  Various automobiles are manufactured by each manufacturer and sold in large quantities, and the same car runs in countless colors and details, and users want to insist on originality while maintaining safety standards, There is a muffler cutter as one of the aids. Conventionally, most of this type of muffler cutter is a straight pipe attached to the tip of a muffler that protrudes straight. It was designed to extend backward and to have a design.

  However, many of the recent automobiles equipped with a bent front end are bent so that they are not visible from the tail body of the vehicle, and conventional straight tubular muffler cutters can handle this. It has become difficult.

For example, the stay 1 that can be attached to the tail pipe 9 at the base end 1 a and the lid 3 that is provided at the tip of the stay 1 and that has a larger diameter than the discharge port 91 facing the discharge port 91 of the tail pipe 9. The lid 3 can be installed away from the discharge port 91, and the lid 3 can be changed in angle with respect to the stay 1 and is opposed to the tail pipe discharge port 91. And a muffler cutter that is attached to the tip of an exhaust pipe 5 of an exhaust muffler of a vehicle. The main body 2 having a substantially cylindrical shape, and mounting members 3 and 4 for mounting the main body 2 to the distal end portion of the exhaust pipe 5. The mounting members 3 and 4 include the axis of the main body 2, Means to change the angle formed by the axis of the tip of the exhaust pipe 5 To have. And by the said structure, it can attach to the exhaust pipe 50 of what can change the injection direction of the exhaust_gas | exhaustion discharged | emitted from the said exhaust pipe 5 (refer patent document 2), and a vehicle, From the cylinder part which has the insertion port which the inclination part of the exhaust pipe 50 is inserted, and the extension part extended in the state by which the upper part was open | released toward the back from the other end of a cylinder part A main body 10 and an attaching means 20 for attaching and fixing the main body 10 to the exhaust pipe 50. The attaching means 20 attaches and fixes the main body 10 in a state suitable for the size and shape of the exhaust pipe 50. A structure (see Patent Document 3) configured to be able to adjust the mounting and fixing state of the main body 10 to the exhaust pipe 50 is disclosed.
JP-A-10-331633 Japanese Patent Laid-Open No. 2004-27933 JP 2006-118409 A

  However, the one described in Patent Document 1 is provided with a catalyst layer 4 for removing nitrogen oxides on the surface of the lid 3 facing the tail pipe discharge port 91, and the nitrogen oxidation contained in the exhaust gas. An object to be removed is a straight tube, which does not have an angle change or design, and the one described in Patent Document 2 or Patent Document 3 is an exhaust muffler for a vehicle. The exhaust pipe 5 is attached to the tip of the exhaust pipe 5 at an angle, but a straight tubular one is fixed to the tip of the exhaust pipe 5 at an angle, and the attached state is unstable. It is not smart and does not improve the appearance.

  The muffler cutter of the present invention is formed on the upper end of the outer tube, the inner tube that is fixed to the muffler by a fixing means, the outer tube that nests the inner tube, and the outer tube in view of the above-mentioned problems. A bending mechanism, a hinge mechanism for pivotally connecting the inner tube and the outer tube, and an angle fixing means for fixing the hinge mechanism; and the fixing means is long above the inner tube. Drill a hole and bulge the upper spacer from the elongated hole. The upper spacer is attached to the metal band, and a fixing bolt insertion hole is drilled below the inner tube and fixed to be screwed into the fixing bolt insertion hole. And a lower spacer fixing bolt insertion hole is formed between the fixing bolt insertion holes of the fixing means, and the lower spacer fixing bolt is screwed into the lower spacer fixing bolt hole to Lower side A lower spacer is interposed between the inner peripheral surface of the inner tube, and in addition, the hinge mechanism includes a pivot base shaft that pivotally fixes both side surfaces of the inner tube and the outer tube, and an outer tube. The outer tube pivot shaft that penetrates close to the pivot base shaft of the inner tube, the inner tube pivot shaft that pivotally penetrates both sides of the inner tube, and the outer tube pivot shaft and the inner tube pivot shaft rotate. A hinge plate material having a hinge pivot hole that is freely penetrated is provided on both sides, and one side of the hinge pivot hole is formed as a long hole to be pivoted and slid.

  The muffler cutter of the present invention has a cylindrical inner tube and an elliptical cylindrical outer tube connected in a nested manner by a hinge mechanism, and is smart and rich in design. Furthermore, the fixing means is mounted on the automobile because it is fixed by an upper spacer attached to a metal band that can be tightened and fixed by a fixing bolt with or without a lower spacer. It can be installed even if the size of the muffler tip is different, and furthermore, the exhaust pipe angle can be changed freely because the inner pipe and the outer pipe are connected by a hinge mechanism. It is a highly practical invention that can provide a muffler cutter rich in design.

  Hereinafter, the muffler cutter of the present invention will be described in detail with reference to the drawings. FIG. 1 is an assembled perspective view for explaining an example of the muffler cutter of the present invention, and FIG. 2 is a muffler cutter of the present invention. FIG. 3 is an exploded perspective view in which components for explaining the embodiment of the present invention are disassembled, FIG. 3 is an explanatory view for explaining a mounting state of a large diameter size of the embodiment of the muffler cutter of the present invention, and FIG. It is explanatory drawing for demonstrating the mounting state of the medium diameter size of the Example of the muffler cutter of invention, and FIG. 5 is explanatory drawing for demonstrating the mounting state of the small diameter size of the Example of the muffler cutter of this invention. .

  The present invention relates to a muffler cutter 1 attached to the tip of a muffler equipped in an automobile, and more specifically, a muffler cutter that a user attaches to the tip of a muffler to insist on originality and improve appearance design. The muffler cutter according to claim 1 is a muffler cutter 1, which is a cylindrical inner pipe 2 fixed to a tip side of a muffler M mounted on an automobile by a fixing means, and the inner pipe. 2 is formed in order to increase the pivot angle of the inner tube 2 above the proximal end of the outer tube 3 and an elliptical cylindrical outer tube 3 having a shorter inner diameter than the outer diameter of the inner tube 2 connecting the two in a nested manner. A curved portion 3a, a hinge mechanism 4 for pivotally connecting the inner tube 2 and the outer tube 3, and an angle fixing means for fixing the hinge mechanism 4 at a fixed angle. It is an feature.

  Furthermore, the muffler cutter according to claim 2 is the muffler cutter according to claim 1, wherein the fixing means has a long hole 2a formed above the base end side of the inner tube 2, and the long hole 2a. The upper spacer 5 is bulged inwardly from the upper side, and the upper spacer 5 is attached to a metal band 6 that can be tightened and fastened to the inner tube 2 and fixed at symmetrical positions below the inner tube 2. Bolt insertion holes 2b are formed, and fixing bolts 7 that are respectively screwed into the respective fixing bolt insertion holes 2b are provided.

  Furthermore, the muffler cutter according to claim 3 is the muffler cutter according to claim 2, wherein a lower spacer fixing bolt insertion hole 2c is formed between the fixing bolt insertion holes 2b of the fixing means, The lower spacer fixing bolt 8 is screwed into the lower spacer fixing bolt insertion hole 2c, and the lower spacer 9 is interposed between the lower end of the muffler M of the automobile and the inner peripheral surface of the inner pipe 2. It is what.

In addition, the muffler cutter according to claim 4 is the muffler cutter according to any one of claims 1 to 3, wherein the hinge mechanism 4 includes:

Respective pivot base shafts 10a in which both side surfaces of the inner tube 2 and the outer tube 3 are pivotably fixed, and respective outer tube pivots penetrating close to the respective pivot base shafts 10a of the outer tube 3. The shaft 10b, the respective inner tube pivot shafts 10c that are pivotably passed through both side surfaces of the inner tube 2, the respective outer tube pivot shafts 10b, and the respective inner tube pivot shafts 10c are rotated. Each hinge plate 11 is provided with a hinge pivot hole 11a penetrating freely at both ends, and one side of each hinge pivot hole 11a is formed into a long hole for pivoting and sliding. It is characterized by this.

  That is, the inner tube 2 of the muffler cutter 1 of the present invention is a cylindrical tube made of metal, and the proximal end side is fixed to the distal end side of the muffler M provided in the automobile by fixing means described later. The tip side is connected to the outer tube 3 in a nested manner via a hinge mechanism 4 described later.

  The outer tube 3 is made of metal and has an oval cylindrical shape. By taking the oval tube shape, the outer tube 3 takes up space above the tail portion of the automobile, and the inner tube 2 is nested on the base end side. The short inner diameter is positioned in the vertical direction and the long inner diameter is positioned in the horizontal direction. The short inner diameter is larger than the outer diameter of the inner tube 2 and the inner tube 2 is inserted through the tip. The edge is bent inward and rounded.

  Next, the bending portion 3a is formed by increasing the pivot angle of the inner tube 2 by cutting it into the distal direction above the proximal end of the outer tube 3 and bending it. In the example muffler cutter 1, an angle of 0 to 30 degrees can be obtained.

  Next, the hinge mechanism 4 is provided on both side surfaces of the inner tube 2 and proximal side surfaces on both sides of the outer tube 3, and the inner tube 2 and the outer tube 3 are connected in a nested manner and can be pivoted. Yes, it can be fixed at a fixed angle by an angle fixing means described later.

  Further, the angle fixing means is provided for each pivot shaft 10a. 10b. The pivot can be fixed by fastening a bolt of 10c, which is fixed at a desired angle, and the tip side of a muffler M of recent vehicles is often provided with an angle below, There are many exhausts that are exhausted toward the ground, and the front end of the vehicle body is located behind the rear end of the automobile body, and even the position of the muffler M is not visible.

  And the fixing means which fixes the muffler cutter 1 to the front end side of the muffler M of a vehicle is provided with the upper spacer 5 and the lower spacer 9, and is firmly fixed from upper and lower sides.

  Further, the upper spacer 5 is formed of an iron plate bent in a U-shaped cross section with the opening on the inside, the tip edge of the opening is formed in an arc shape along the shape of the tip side of the muffler M, and the upper surface is also an inner tube. 2 is formed in an arc shape along the shape of No. 2, and a long hole 2a through which the upper spacer 5 is inserted is formed along the circumferential direction above the proximal end side of the inner tube 2, and the inward direction from the long hole 2a. The upper spacer 5 is bulged, and the upper surface of the upper spacer 5 is attached to the metal band 6 by means of welding, caulking or the like. The fastening portion of the band 6 can be fastened and detached with a screw 6a.

  Next, the lower fixing means are provided with fixing bolt insertion holes 2b at symmetrical positions with the center line below the base end side of the inner tube 2 in between, and the fixing bolt insertion holes 2b are screwed. As shown in the embodiment shown in FIG. 3, the screw bolts may be screwed into the fixing bolt insertion holes 2b by welding the nuts connected to the fixing bolt insertion holes 2b. The fixing bolts 7 are screwed evenly to the left and right sides to be fixed to the 2b. In this case, the fixing bolt 7 is attached to the tip side of the muffler M having a relatively large diameter, and the lower spacer 9 is unnecessary. is there.

  2 and 4, the lower spacer 9 is formed by bending a metal plate having a slight thickness into an arc shape as shown in FIG. The lower spacer fixing bolt insertion hole 2c is inserted into the left and right fixing bolts of the fixing means drilled in the inner tube 2, and may be used in accordance with the size of the tip side of the muffler M of the automobile. It is formed between the holes 2b. A screw hole for fixing is screwed into the lower spacer 9, and the lower spacer fixing bolt 8 is inserted from the outside of the inner tube 2 into the lower spacer fixing bolt insertion hole 2c. 9 is screwed into the fixing screw hole 9 and is interposed between the lower side of the front end side of the muffler M of the automobile and the inner peripheral surface of the inner tube 2.

  Further, the hinge mechanism 4 is provided with a pivot base shaft fixing insertion hole on each side surface of each of the inner tube 2 and the outer tube 3, and a pivot base shaft 10a is provided in each pivot base shaft fixing insertion hole. Even if it is penetrated and fixed, in the embodiment, the outer tube 3 is provided with a pivot base shaft fixing insertion hole so that the pivot base shaft 10a is penetrated and fixed, and both sides of the pivot base shaft 10a and the inner tube 2 are fixed. An exhaust gas backflow prevention plate 12 which is bulged to be described later is fixed.

  Further, the outer tube pivot shafts 10b penetrate the respective pivot base shafts 10a of the outer tube 3 close to each other, and the inner tube pivot shafts 10c can pivot on both side surfaces of the inner tube 2, respectively. Is to penetrate.

  Each hinge plate member 11 is a metal plate bent into a substantially Z-shaped side surface with hinge pivot holes 11a formed at both ends, and the outer tube pivot shaft 10b is inserted into the hinge pivot hole 11a at both ends. And the inner tube pivot shaft 10c are pivotally penetrated.

  Next, the hinge pivot hole 11a on one side is a long hole, and in the embodiment, the hinge pivot hole 11a penetrating the inner tube pivot shaft 10c is a long hole, and the pivot base shaft 10a is the center. When pivoted, the inner tube 2 moves slightly back and forth, but the inner tube 2 pivots and slides on the inner tube pivot shaft 10c by the long hinge pivot hole 11a. The direction is moved and regulated.

  And, since there is a space on both sides of the inner tube 2 and both sides of the outer tube 3 in the large diameter direction, a plate-like exhaust gas backflow prevention plate 12 that prevents exhaust gas from flowing forward is bulged. In the embodiment, the exhaust gas backflow prevention plate 12 and the pivot shaft 10a are fixed and the inner tube 2 and the outer tube 3 are connected.

  The muffler cutter of the present invention can also be implemented as a fixing means in which the inner tube 2 is formed integrally with the end of the muffler equipped in the automobile.

  The muffler cutter of the present invention has a cylindrical inner tube and an elliptical cylindrical outer tube connected in a nested manner by a hinge mechanism, which is rich in design, and easily sets the angle of the exhaust tip In addition, since the fixing means is fixed by an upper spacer attached to the metal band and a fixing bolt interposing the lower spacer, the size of the tip of the muffler equipped in the automobile is different. In addition, the inner tube and the outer tube are connected by a hinge mechanism so that the angle can be freely adjusted, and the muffler of the automobile facing downward can be seen as a horizontal muffler. The present invention provides a muffler cutter with a rich design.

FIG. 1 is an assembled perspective view for explaining an embodiment of a muffler cutter of the present invention. FIG. 2 is an exploded perspective view of parts for explaining an embodiment of the muffler cutter of the present invention. FIG. 3 is an explanatory view for explaining a mounting state of the large diameter size of the embodiment of the muffler cutter of the present invention. FIG. 4 is an explanatory view for explaining a mounting state of the medium diameter size of the embodiment of the muffler cutter of the present invention. FIG. 5 is an explanatory view for explaining a mounting state of the small diameter size of the embodiment of the muffler cutter of the present invention.

Explanation of symbols

M muffler 1 muffler cutter 2 inner tube 2a long hole 2b fixing bolt insertion hole 2c lower spacer fixing bolt insertion hole 3 outer tube 3a bending portion 4 hinge mechanism 5 upper spacer 6 metal band 6a screw 7 fixing bolt 8 lower spacer fixing bolt 9 Lower spacer 10 Pivoting shaft 11 Hinge plate material 11a Hinge pivot hole 12 Exhaust gas backflow prevention plate

Claims (4)

  A muffler cutter, which is a cylindrical inner tube that is fixed to the tip side of a muffler equipped in an automobile by a fixing means, and an elliptical cylindrical shape having a shorter inner diameter than the outer diameter of the inner tube that connects the inner tube in a nested manner An outer tube, a curved portion formed to increase the pivot angle of the inner tube above the proximal end of the outer tube, and a hinge mechanism for pivotally connecting the inner tube and the outer tube; An muffler cutter comprising an angle fixing means for fixing the hinge mechanism at a constant angle.   The fixing means is formed with a long hole above the proximal end side of the inner tube, and an upper spacer is bulged inwardly from the long hole, and the upper spacer can be tightened to fasten the inner tube. A fixing bolt that is attached to a metal band, has a fixing bolt insertion hole formed at a symmetrical position below the inner tube, and is screwed into the fixing bolt insertion hole, respectively. The muffler cutter according to claim 1.   A lower spacer fixing bolt insertion hole is formed between the fixing bolt insertion holes of the fixing means, and the lower spacer fixing bolt is screwed into the lower spacer fixing bolt insertion hole so as to be below the front end side of the muffler of the automobile. The muffler cutter according to claim 2, wherein a lower spacer is interposed between the inner peripheral surface of the inner pipe and the inner pipe. The hinge mechanism includes a pivot base shaft that pivotally fixes both side surfaces of the inner tube and the outer tube, and a respective outer tube pivot that penetrates close to each pivot base shaft of the outer tube. A shaft, a respective inner tube pivot shaft that is pivotably penetrated on both side surfaces of the inner tube, and a respective outer tube pivot shaft and a respective inner tube pivot shaft are pivotally penetrated. 2. A hinge plate member having a hinge pivot hole formed on each side thereof is provided, and one side of each hinge pivot hole is formed as a long hole to be pivoted and slid. The muffler cutter as described in any one of -3.

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