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1. 发明专利

JPH08177475A SPHERICAL JOINT 失效
公开(公告)号：JPH08177475A
公开(公告)日：1996-07-09
申请号：JP32496394
申请日：1994-12-27
申请人： TOYOTA MOTOR CORP , FUTABA SANGYO KK
发明人： HOSOMI MIKIYA , OGAWA SUMIO , AKIYAMA MASATERU , SUZUKI MITSUO , KAWABE TOYOHISA
IPC分类号： F01N13/08 , F16C11/06 , F16L27/06 , F01N7/08
摘要： PURPOSE: To enable wire mesh body holding grooves to be formed into a precise size with high precision in a case by forming holding grooves in each of inner and outer cases. CONSTITUTION: Wire mesh body holding grooves 9, 10 are each formed in outer case 1 and an inner case 2, and the holding grooves 9, 10 are provided on the tip from the apexes 7, 8 of the outer case 1 and the inner case 2 and on the opposite side. Moreover, the sectional shapes of the holding grooves 9, 10 are formed into approximately triangular shapes.

2. 发明专利

JPH07217430A FLEXIBLE JOINT FOR EXHAUST PIPE 失效
公开(公告)号：JPH07217430A
公开(公告)日：1995-08-15
申请号：JP944894
申请日：1994-01-31
申请人： TOYOTA MOTOR CORP , FUTABA SANGYO KK
发明人： SUZUKI KENJI , ISHIHATA TAKAHITO , AKIYAMA MASATERU , SATO MASAO , SUZUKI MITSUO
IPC分类号： F01N13/08 , F01N7/08
摘要： PURPOSE:To provide a flexible joint, in which the generation of a gap between a pin and a bush fitting part, is prevented, for an exhaust pipe without any increase of costs. CONSTITUTION:In a flexible joint 10 for an exhaust pipe, a cap 14 is pressed in the cap axial direction toward the second outer case 12 by means of a load within an elastic limit of the second outer case 12, and the cap 14 is welded and fixed on the first outer case 11 while the second outer case 12 is elastically deformed. The cap 14 may be fixed on the first outer case 11 with diameter internal direction energizing force applied to the first outer case 11. In initial stage of assembly, a gap between a pin 15 and a bush 15 is eliminated, while the gap is absorbed for a long time by means of the outer case 12 or a spring back of the first outer case 11, and as a result the gap is canceled.

3. 发明专利

JPH09209747A EXHAUST PIPE CONNECTIVE STRUCTURE 失效
公开(公告)号：JPH09209747A
公开(公告)日：1997-08-12
申请号：JP2142696
申请日：1996-02-07
申请人： FUTABA SANGYO KK
发明人： SUZUKI MITSUO , KITAZAKI HIROSHI , ONO KAZUNARI
IPC分类号： F01N13/08 , F01N7/08
摘要： PROBLEM TO BE SOLVED: To make passing exhausts in paths difficult to be interfered with each other when two exhaust pipes in which multiple exhaust paths are provided are connected. SOLUTION: The connecting structure of an exhaust pipe is such that an upstream side flow dividing pipe 10 is connected to a downstream side flow dividing pipe 20. The former is provided with an upstream side partition 12 which divides the inside of a single pipe 11 into two flow paths S11 and S12, and the latter is provided with a downstream side partition 22 which divides the inside of a single pipe 21 into two flow paths S21 and S22. Also, because a bent piece 12a and a plate piece 15 cover the upstream side end parts of the downstream side partition 22, the bent piece 12a prevents the exhaust flowing through the path S11 from flowing into the flow path S22, and the plate piece 15 prevents the exhaust flowing through the path S12 from flowing into the flow path S21. Thus the exhaust passing the flow paths are difficult to be interfered with each other.

4. 发明专利

JPH09170425A MUFFLER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH09170425A
公开(公告)日：1997-06-30
申请号：JP34562396
申请日：1996-12-25
申请人： FUTABA SANGYO KK
发明人： SUZUKI MITSUO , ONO KAZUNARI , FUJIWARA KUNIHIKO , KATO TETSUO , MORISHITA TAKANORI
IPC分类号： F01N1/08 , F01N13/08 , F01N7/08
摘要： PROBLEM TO BE SOLVED: To provide a muffler for internal combustion engine provided with a valve body which can block and open an opening end of a bypass inner pipe which can perform open and close operations properly due to pressure of exhaust gas, is not affected by external factors, has a simple structure, and facilitates the assembly work. SOLUTION: A valve body 32 is attached on a fixed shaft 36 supported in the vicinity of an opening end 28a of a bypass inner pipe 28 in such a manner that it can oscillate, is energized on the opening end 28a by a coil spring 42, and adheres closely with a flange part 38 to block the opening end 28a. When the number of revolutions of an internal combustion engine is small, pressure in the bypass inner pipe 28 is lower than action force which is an addition of energizing force of the coil spring 42 and external pressure. For this reason, the opening end 28a is blocked. On the other hand, when the number of revolutions increases and pressure is increased up to predetermined pressure, both are inverted. Consequently, the valve body 32 leaves the opening end 28a, and the bypass inner pipe 28 enters a communicating condition.

5. 发明专利

JPH08312342A VIBRO-ISOLATING PIPE 失效
公开(公告)号：JPH08312342A
公开(公告)日：1996-11-26
申请号：JP11461095
申请日：1995-05-12
申请人： FUTABA SANGYO KK , NIPPON BEROOZU KOGYO KK
发明人： SUZUKI MITSUO
IPC分类号： F01N13/08 , F01N7/08
摘要： PURPOSE: To secure a vibro-isolating pipe that is able to reduce a pitch of impact noise as well as to damp a pipe axial vibration so quickly. CONSTITUTION: This vibro-isolating pipe consists of a bellows, an interlock and the like. The interlock 3 is inserted into the bellows, wrapping itself on strip bodies 30a and 30b, and formed into a pipe form. Two hooks 32a and 32b of these adjacent strip bodies 30a and 30b constituting this interlock 3 are engaged with each other in a state of being conformed to each other, and they are slidable in the pipe axial direction. If being compressed in this pipe axial direction, the hook 32a of the strip body 30a on one side collides with an impact receiving part 31b of the strip body 33b on the other as sliding with the hook part 33b of the strip body 30b on the other. Since any vibration in the pipe axial direction is quickly damped by this sliding motion, the frequency of collisions is reduced and simultaneously the impact noise becomes lessened. As the impact receiving part 31b is at an angle θ(40 to 50 deg.) to the pipe axial direction, the impact noise becomes yet smaller.

6. 发明专利

JPH09210272A VIBRATION ISOLATING STRUCTURE FOR PIPE CONNECTION PART 失效
公开(公告)号：JPH09210272A
公开(公告)日：1997-08-12
申请号：JP2142796
申请日：1996-02-07
申请人： FUTABA SANGYO KK
发明人： NAKAZAWA TETSUO , SUZUKI MITSUO , FUJIWARA KUNIHIKO , KITAZAKI HIROSHI , ONO KAZUNARI
IPC分类号： F01N13/08 , F16L27/00 , F16L39/04 , F01N7/08
摘要： PROBLEM TO BE SOLVED: To provide a structure in which flowing exhaust gas in each flow path is prevented from being interfered with exhaust gas flowing in the other flow path, and smoothly flows, in a connection part of the fellow pipes of which inside is divided into the two flow paths. SOLUTION: In an end part of an upstream partitioning plate 12, a lap part 15, covering an arc-shaped part 25 which is an end part of a downstream partitioning plate 22, is provided. Of the lap parts 15, a part 15a opposed to the arc-shaped part 25 is formed in a circular arc shape having a concentrical circle to a circular arc of the arc-shaped part 25. In the lap part 15, exhaust gas circulated in a flow path S11 is impeded from flowing in a flow path S22, and exhaust gas flowing in a flow path S12 is impeded from flowing in a flow path S12. Even when an upstream pipe 10 makes a rolling motion in a vertical direction of a vehicle, the lap part 15 and the arc-shaped part 25 are left as maintaining a contactless condition, and the lap part 15 continues covering of the arc-shaped part 25.

7. 发明专利

JPH09210261A FLOW PATH DIVIDING PIPE AND ITS WORKING METHOD 失效
公开(公告)号：JPH09210261A
公开(公告)日：1997-08-12
申请号：JP2142596
申请日：1996-02-07
申请人： FUTABA SANGYO KK
发明人： SUZUKI MITSUO , ONO KAZUNARI
IPC分类号： F01N13/08 , F16L9/19 , F01N7/08
摘要： PROBLEM TO BE SOLVED: To provide a flow path dividing pipe suited for performing expanding or contracting of a pipe and a working method for the flow path dividing pipe. SOLUTION: A flow path dividing pipe 20 is a pipe divided inside a cylindrical pipe 21 into two flow paths S21, S22 by a partitioning plate 22. A notched groove 24 is provided in an end part in a left side of the partitioning plate 22. When an end part in a left side of the flow path dividing pipe 20 thus formed is expanded, a width of a slit grove part 24b in the notched groove 24 is spread, the partitioning plate 22 is expanded in a direction substantially orthogonal relating to an axial direction. Consequently, separation of bending parts 23, 23 of the partitioning plate 22 from a welding part of the cylindrical pipe 21 is eliminated. When the pipe is contracted, a width of the slit groove part 24b in the notched groove 24 is narrowed, the partitioning plate 22 is contracted in a direction substantially orthogonal relating to the axial direction. Consequently, buckling of the partitioning plate 22 is eliminated.

8. 发明专利

JPH09177547A VIBRATION INTERRUPTING MECHANISM FOR PLURALITY OF EXHAUST PATHS 失效
公开(公告)号：JPH09177547A
公开(公告)日：1997-07-08
申请号：JP34166395
申请日：1995-12-27
申请人： FUTABA SANGYO KK
发明人： SUZUKI MITSUO , MITSUISHI YOSHIHISA , INUZUKA KAZUHIRO , KAWABE TOYOHISA
IPC分类号： F01N13/08 , F01N7/08
摘要： PROBLEM TO BE SOLVED: To absorb all directional vibrations, and minimize the displacement in the absorption of the vibrations. SOLUTION: Each exhaust path 20 of a dual vibration interrupting pipe is formed of a bellows pipe 21 and an upstream pipe 26 which are mutually connected. The bellows pipe 21 is supported by a first support body 30, and the upstream pipe 26 by a second support body 40. The vertical piece 33 of the first support body 30 is arranged between the flange 41 and tip piece 43 of the second support body 40. A coil spring 50 is compressed and arranged between the flange part 41 and the tip piece 43 in the state where it is passed to the vertical piece 3 in about half of the spring length. Although each exhaust route 20 is displaced by the presence of the bellows pipe 21 when an axial or bending directional vibration is transmitted from an engine, it is never excessively displaced by the axial or bending directional vibration since its expansion and bending is regulated by the elastic force of the coil spring 50.

9. 发明专利

JPH0861574A PIPE FITTING STRUCTURE 失效
公开(公告)号：JPH0861574A
公开(公告)日：1996-03-08
申请号：JP19675194
申请日：1994-08-22
申请人： FUTABA SANGYO KK
发明人： SUZUKI MITSUO
IPC分类号： F16L23/024 , F16L23/026 , F16L23/028 , F16L23/036
摘要： PURPOSE: To provide a structure of a pipe fitting which can prevent generation of dispersion in terms of strength and can suppress the costs. CONSTITUTION: A structure 1 of a pipe fitting is to connect a pipe 4 with an exhaust manifold 2 and is composed of a spacer 3, pipe 4, and flange 5. The spacer 3 is made of a sintered material and formed into a cylinder 31 in the form of a truncated cone approximately, and a flange 32 extended outward is furnished at the end face of cylinder 31 on its major diameter side. The pipe 4 is equipped at the end with an insertion part 41 to which the spacer 3 is inserted. The flange 5 is configured with a flange body 51 and a cylindrical projection 56 provided in the center, and a pressing surface 56 approx. identical to the outside surface of the insertion part 41 of the pipe 4 is formed on that part of inside surface of the cylindrical projection 56 which is situated on the flange body 51 side.

10. 发明专利

JPH0436012A METHOD OF FIXING PROTECTOR TO EXHAUST PIPE FOR AUTOMOBILE 失效
公开(公告)号：JPH0436012A
公开(公告)日：1992-02-06
申请号：JP13882090
申请日：1990-05-29
申请人： FUTABA SANGYO KK
发明人： SUZUKI MITSUO
IPC分类号： F01N13/08
摘要： PURPOSE:To reduce the thickness of a band plate to decrease the weight and lower cost by pulling the band plate in the direction of securing a protector at the other end side of a sealing material, and securing a protector to an exhaust pipe by the band plate. CONSTITUTION:After one end part 1a of a band plate 1 is inserted into a sealing material 2, the band plate is wrapped around the outside peripheral surface of a protector 4. When the band plate 1 is strongly pulled at the other end 2b side of the sealing material 2, an engaging part 5 is engaged with one end 2a side of the sealing material 2, and the band plate 1 firmly secures the protector to the exhaust pipe 3. When the sealing material 2 caulked in this state, the band plate 1 is fixed to the sealing material 2. Thereafter, the outside part of the band plate 1 is cut off at the other end 2b side of the sealing material 2. As a result, the protector 4 is completely secured to the exhaust pipe 3. Thus, the band plate has good operating performance even in a narrow space, and it is lightweight and low in cost.

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