JP2007002743A - Seal device in air cleaner of engine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent forgetfulness of installation and the loss of its seal packing, by preventing unreasonable separation of the seal packing for checking leaking-out to the engine side as it is from a cleaner cover body when replacing a cleaner element unit, without cleaning outside air taken in from its suction port by the cleaner element unit, in an air cleaner of a general purpose engine. <P>SOLUTION: In this seal device, the seal packing 68 and the cleaner element unit Ue are superposably fitted to the outer periphery of an intake passage 17 in the cleaner cover body 10, and the outside air taken in from the suction port 50 is cleaned by the cleaner element unit Ue, and is then exhausted to an exhaust port 16, and the outside air is prevented from directly leaking out to the exhaust port 16 by the seal packing 68. A slipping-out preventive projection 75 tightly engaging with the intake passage 17 is arranged in the seal packing 68. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air cleaner for an engine, particularly a general-purpose engine, which relates to a sealing device that prevents the intake air from being sucked into the engine without being purified.

2. Description of the Related Art Conventionally, in an air cleaner for a general-purpose engine, a joining cylinder (intake cylinder) 9 is provided on a bottom plate 14 that closes the lower surface opening of a cover case 51, and an air cleaner element 6 is fitted into the joining cylinder 9, and the air cleaner element 6 and the bottom plate 14 A sealing device for an air cleaner of an engine is known in which a packing 16 is interposed between them so that outside air containing dust does not directly leak to the engine side without passing through the air cleaner element 6 (see, for example, Patent Document 1). ).
Japanese Utility Model No. 1-78258 microfilm

  However, in the one disclosed in Patent Document 1, when removing the air cleaner element from the joining tube for maintenance such as replacement of the air cleaner element, cleaning, etc., the packing may come off together while being in close contact with the air cleaner element. There is a problem that the reassembly of the packing is forgotten or lost.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a sealing device for an air cleaner for a new engine that can solve the above-mentioned problems.

In order to achieve the above object, according to the first aspect of the present invention, there is provided an intake passage that communicates a suction port and a discharge port provided in a cleaner cover body, and a seal packing and a cleaner element are provided on the outer periphery of the intake passage. Units are stacked and fitted, and the outside air taken in from the suction port is cleaned by the cleaner element unit, then discharged to the discharge port, and the seal packing prevents the outside air from leaking directly to the discharge port. In the sealing device for the engine air cleaner,
The seal packing is provided with a retaining member that closely engages with the cleaner cover body to prevent the slip packing from coming out of the intake passage.

In order to achieve the above object, according to the present invention, the cleaner cover body includes an upper cover body and a lower cover body fixed to a lower portion of the cleaner cover body. An intake passage that communicates the suction port provided in the air outlet and the discharge port provided in the lower cover body is provided, and the seal packing and the cleaner element unit are overlapped and fitted on the outer periphery of the ventilation passage, and the suction port is provided by the cleaner element unit. After cleaning the outside air taken in from the engine, it is discharged to the outlet, and the seal packing is sandwiched between the cleaner element unit and the partition wall to prevent the outside air from leaking directly to the outlet. In the sealing device in the air cleaner of
The seal packing is provided with a retaining member that closely engages with the lower cover body, and prevents the slip packing from coming out of the intake passage.

  In order to achieve the above object, the invention of claim 3 is the invention according to claim 1 or 2, wherein the retaining member of the seal packing is closely engaged with the outer peripheral surface of the intake passage. It is characterized by being.

  In order to achieve the above object, according to a fourth aspect of the present invention, in the first aspect of the present invention, the retaining member of the seal packing is closely engaged with a concave groove formed in the partition wall. It is characterized by that.

  In order to achieve the above object, the invention according to claim 5 is the invention according to claim 1, 2, 3 or 4, wherein the retaining member is formed on a surface other than the seal surface of the seal packing. It is characterized by.

  According to the invention of each claim, when removing this from the intake cylinder for maintenance such as replacement and cleaning of the cleaner element unit, the seal packing remains at the current position and does not come off, Never forget to assemble the seal packing, and the seal packing is not lost.

  In particular, according to the invention of claim 5, the retaining member can be provided in the seal packing without affecting the action of the seal surface of the seal packing.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below based on examples of the present invention illustrated in the accompanying drawings.

  First, a first embodiment of the present invention will be described with reference to FIGS.

  The first embodiment is a case where the sealing device of the present invention is applied to a general-purpose engine unit. FIG. 1 is a front view of the general-purpose engine unit having the air cleaner structure of the present invention, and FIG. FIG. 3 is an enlarged sectional view taken along line 3-3 in FIG. 2, FIG. 4 is a sectional view taken along line 4-4 in FIG. 3, and FIG. 5 is a sectional view taken along line 5-5 in FIG. 6 is a cross-sectional view taken along line 6-6 of FIG. 3, FIG. 7 is a cross-sectional view taken along line 7-7 of FIG. 5, FIG. 8 is an exploded perspective view of the air cleaner, and FIG. FIG. 10 is an enlarged plan view of the seal packing taken along line 9-9, FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. 9, and FIG. 11 is an enlarged view of the imaginary line enclosing portion in FIG.

  1 and 2, a general-purpose engine E serving as a power source for various working machines in the general-purpose engine unit is a four-cycle engine, and includes a crankcase 2 that supports a crankshaft 1 that is disposed in a horizontal direction, A cylinder portion 3 projecting obliquely upward from the case 2, a fuel tank T supported by the cylinder portion 3 is disposed directly above the crankcase 2, and a carburetor is disposed on one side of the cylinder portion 3. 4 is attached, and an air cleaner AC connected to the carburetor 4 and an exhaust muffler M connected to the other side of the cylinder part 3 are arranged directly above the cylinder part 3 so that they are arranged on the side of the fuel tank T. Placed in.

  Next, the structure of the air cleaner AC according to the present invention will be described in detail with reference to FIGS.

  As shown most clearly in FIG. 3, the cleaner cover body 10 that is the outer shell of the air cleaner AC is made of synthetic resin, and is configured by integrally joining the upper cover body 11 and the lower cover body 12. . The upper cover 11 is formed in a cap shape with the lower surface opened. Further, the lower cover body 12 is formed in a sealed shape including an intake duct 13 formed in an elbow shape that is long in the vertical direction and a partition wall 14 that closes the upper surface of the opening. The upper surface of the cover body 12 is detachably fitted and connected.

  As shown in FIGS. 3, 4, and 8, a rectangular tube-shaped ventilation passage 17 is integrally provided in the middle portion of the partition wall 14 so as to project into the upper cover body 11. The inside of the upper cover body 11 and the inside of the lower cover body 12 are communicated with each other. A support bolt 18 extending in the vertical direction is fixed to the upper portion of the intake duct 13 of the lower cover body 12. The support bolt 18 passes through the intake passage 17 and vertically passes through the upper cover body 11, and a screw portion at the upper end of the support bolt 18 passes through a mounting hole 19 provided in the upper wall of the upper cover body and extends outward. The upper cover body 11 is detachably fixed onto the partition wall 14 of the lower cover body 12 by screwing the nut 20 therethrough.

  An exhaust port 16 of the air cleaner AC is opened at the lower end of the lower cover body 12, that is, the lower end of the intake duct 13, and this exhaust port 16 is connected to the upstream end of the vaporizer 4 (see FIG. 6). As will be described later, the air cleaner AC has a lower cover body 12 fixed and supported on the cylinder portion 3 of the engine E with high rigidity.

  Next, this support structure will be described with reference to FIGS.

  The air cleaner AC has its lower cover body 12 supported by the cylinder portion 3 of the engine E at three points. Specifically, as shown in FIGS. 3 and 6, the lower end portion of the lower cover body 12 is supported by the two connecting bolts 22 and 23 on the cylinder portion 3 of the engine E at two points via the carburetor 4. As shown in FIGS. 3, 5, and 7, the upper end portion of the lower cover body 12, that is, the portion close to the partition wall 14 is directly supported on the cylinder portion 3 of the engine E by one connecting bolt 24 at one point. Has been. As shown in FIG. 6, the downstream side of the carburetor 4 is connected to the cylinder head portion 3 </ b> H of the cylinder portion 3 of the engine E via a gasket 25, and a packing 26 is connected to the upstream side of the carburetor 4. A lower end portion of the lower cover body 12 is integrally connected with being sandwiched. A lower end portion of the lower cover 12 is penetrated by bolt holes 27 and 28 provided in the lower cover body 12 and the carburetor 4, and two through connecting bolts 22 and 23 screwed to the cylinder head portion 3H of the cylinder portion 3. It is fixed. A metal sleeve 29 is fitted into the bolt hole 27 of the lower cover 12 so that the lower cover body 12 is not deformed even when the connecting bolts 22 and 23 are tightened. The intake duct 13 formed in the lower cover body 12 of the air cleaner AC is communicated with the intake port Ep of the engine E through the intake passage 30 of the carburetor 4, and the intake air in the air cleaner AC is normally supplied to the carburetor 4. After being mixed with fuel at, it is guided to the intake port Ep.

  In FIG. 6, reference numerals 32 and 33 denote a choke valve and a throttle valve that can be opened and closed in the intake passage 30 of the carburetor 4.

  As shown in FIGS. 3 and 5, a cylindrical boss portion 38 is integrally formed on the vertical wall portion 37 having high rigidity at the upper end portion of the lower cover body 12 of the air cleaner AC near the partition wall 14. ing. The boss portion 18 is integrally formed with a long bottomed hollow cylindrical hole 39 extending inward of the lower cover body 12, that is, toward the cylinder portion 3 of the engine E. A bolt hole 40 is provided therethrough. And the bolt screw hole 41 is provided in the wall surface of the cylinder head part 3H of the cylinder part 3 which opposes this bolt hole 40, and as shown in FIG. 5, the bolt hole 40 and the bolt screw hole 41 are on the same axis line. It is in. A stud bolt 24 as a connecting bolt is screwed into the bolt screw hole 41. The stud bolt 24 passes through the screw hole 40 of the lower cover body 12, and then the screw portion protrudes into the hollow cylindrical hole 39, and a nut 42 is screwed to the screw portion, thereby the upper portion of the lower cover body 12. Can be fixed to the cylinder head portion 3H of the cylinder portion 3 with the single connecting bolt 24. Therefore, the upper portion of the lower cover body 12 has a highly rigid vertical wall portion 37 (close to the partition wall 14 and reinforced by the boss portion 38) firmly fixed to the cylinder portion 3 of the engine E by the connecting bolt 24. Fixed to.

  As shown in FIG. 5, the axis lines 22l and 23l of the two connecting bolts 22 and 23 and the axis line 24l of the stud bolt 24 are substantially parallel to each other and have the same fastening direction. Since all the connecting bolts 22, 23, and 24 can be tightened and loosened from the outside of the air cleaner AC, the operation of the air cleaner AC to the cylinder portion 3 of the engine E is easy.

  As described above, the air cleaner AC has its lower cover body 12 supported and fixed at three points to the cylinder portion 3 of the engine E by the three connecting bolts 22, 23, 24. Can be increased. Further, the boss portion 38 is provided with a deep hollow cylindrical hole 39 toward the cylinder portion 3, and the tightening distance by the connecting bolt 24 is shortened. Therefore, the air cleaner AC is connected to the cylinder which is the mounting portion on the engine side. It can approach the part 3 and can be fixedly supported there, and the support rigidity can be further increased.

  As shown in FIGS. 3 and 8, a cleaner element unit Ue described later is detachably accommodated in the upper cover body 11 of the air cleaner AC.

  A suction port 50 for taking in outside air is opened on the partition wall 14 of the lower cover body 12, that is, on one side of the upper wall of the lower cover body 12 (right side in FIGS. 3 and 4). As shown in FIG. 4, the suction port 50 is formed as a long hole that is long in a direction orthogonal to a center line cc passing through the center 50 c and the center 12 c of the lower cover body 12, and the center thereof. It has the expansion part 50a which spreads toward the center 12c side of the lower cover body 12 with respect to 50c, and is formed in a large area as a whole. As shown in FIG. 3, a square cylinder-shaped intake cylinder 51 that extends into the upper cover body 11 is integrally connected to the suction port 50. The intake cylinder 51 is formed in a chimney shape that is gradually throttled from the inlet on the inlet 50 side toward the outlet at the upper end.

  A shielding wall 53 is integrally suspended along the outer opening edge of the suction port 50 on the side away from the cleaner element unit Ue. As shown in FIG. 4, the shielding wall 53 extends in a direction away from the suction port 50 so as to cover the suction port 50, and is then bent and curved so as to cover both longitudinal ends of the suction port 50. The cover body 11 is connected to the lower part of the inner surface. Therefore, the shielding wall 53 covers the substantially half of the suction port 50 on the side away from the cleaner element unit Ue. In addition, the lower end of the skirt wall 11 a in the vicinity of the suction port 50 of the upper cover body 11 extends downward from the suction port 50, and the extended portion faces the shielding wall 53 and is parallel to the shielding wall 53. The lower end thereof is set at substantially the same level as the lower end of the shielding wall 53. And as shown in FIG. 3, the said shielding wall 53 and the skirt wall 11a of the upper cover body 11 form the double wall which mutually faces under the outer opening edge of the suction inlet 50, and between these A gap 54 opened downward is formed.

By the way, the general-purpose engine working machine is generally used outdoors, and when using in rainy weather, naturally, raindrops that fall on the upper cover 11 of the air cleaner AC are allowed to fall on the skirt wall 11a from the upper surface of the upper cover body 11. It is considered that it reaches the lower end edge of the air and is sucked into the air cleaner AC through the suction port 50. According to this embodiment, a structure for positively preventing raindrops from entering the air cleaner AC is provided. That is,
(1) The lower end of the skirt wall 11a close to the suction port 50 extends downward from the level of the suction port 50.
It is possible to prevent the raindrops from being drawn to the suction port 50 due to the intake negative pressure.

(2) By forming a double wall with the shielding wall 53 and the skirt wall 11a of the upper cover body 11 that covers the suction port 50 and extends below the suction port 50,
According to the above (1), the raindrops attracted to the suction port 50 bypass the lower edge of the skirt wall 11a and flow into the gap 54. Here, the raindrops collide with the shielding wall 53 and fall. Accordingly, it is possible to more reliably prevent raindrops from being sucked into the suction port 50.

Further, (3) the suction port 50 is provided with a widened portion 5a that expands toward the center 11c side of the upper cover body 11 with respect to the center 50c, and the intake cylinder 51 connected to the suction port 50 includes: By gradually squeezing from the entrance to the exit,
The intake negative pressure becomes weak in the vicinity of the intake port 50, and the flow velocity of the intake air there is slowed down, and the effect of preventing the raindrops from being absorbed into the air cleaner AC by the above (1) and (2) is assisted.

  A cleaner element unit Ue is accommodated and supported in the upper cover body 11 of the cleaner cover body 10. As shown in FIGS. 3 and 8, the cleaner element unit Ue is formed in an oval cylindrical shape as a whole, and is formed in an oval cylindrical shape in which a paper cleaner 62 and a urethane cleaner 61 are stacked to open the upper and lower surfaces. And an upper plate 63 and a lower plate 64 made of a metal plate, which are attached to the open upper and lower surfaces of the cleaner element 60 so as to close them. A mounting hole 66 into which a rubber bush 65 is fitted is provided at the center of the upper plate 63, and a rectangular tube-shaped ventilation passage 17 protruding from the partition wall 14 is provided at the center of the lower plate 64. A fitting hole 67 that is detachably fitted is opened.

  As shown in FIG. 3, the cleaner element unit Ue is seated on the partition wall 14 with the seal packing 68 interposed therebetween, with the fitting hole 67 of the lower plate 64 fitted into the outer peripheral surface of the ventilation passage 17. The support bolt 18 passing through the ventilation passage 17 and vertically passing through the cleaner element has a threaded portion at the upper end protruding through the rubber bush 65 of the mounting hole 66 and projecting outside, and a nut 69 is screwed into the projecting end. By tightening, the cleaner element unit Ue is detachably fixedly supported on the partition wall 14 of the lower cover body 12 via the seal packing 68.

  Thus, the cleaner element unit Ue divides the inside of the upper cover body 11 into an unclean chamber Cd on the outside and a clean chamber Cc on the inside. According to the operation of the engine E, outside air is sucked in. After entering the unclean chamber Cd through the port 50 and filtered through the cleaner element 60, the clean chamber Cc is entered, and is led from the ventilation passage 17 to the vaporizer 4 through the intake duct 13.

  Thus, a seal packing 68 made of rubber packing is sandwiched between the upper surface of the partition wall 14 and the lower surface of the lower plate 64 of the cleaner element unit Ue. The seal packing 68 hermetically seals between the unclean chamber Cd and the clean chamber Cc to prevent unclean outside air from being directly sucked into the clean chamber Cc. As shown in FIGS. 9, 10, and 11, the seal packing 68 is formed in a square endless shape, and is fitted to the outer peripheral surface of the root portion of the rectangular tube-like intake passage 17. At the intermediate portion in the width direction of the upper seal surface 71 and the lower seal surface 73 of the seal packing 68, lower lip pieces 72 and 74 are integrally projected on the upper side of the triangular shape. The cleaner element unit Ue is in close contact with the lower surface of the lower plate 64, and the lower lip piece 74 is in close contact with the upper surface of the partition wall 14. In addition, a plurality of retaining protrusions 75 as retaining members are provided integrally and projecting inward on the inner peripheral surface of the seal packing 68 at intervals in the circumferential direction. The base portion of the outer peripheral surface of the intake passage 17 is closely engaged by the frictional force therebetween, and the cleaner element unit Ue is connected to the intake passage in order to perform maintenance such as replacement or cleaning of the cleaner element unit Ue. When the seal packing 68 is removed from the air inlet 17, the seal packing 68 remains attached to the cleaner element unit Ue so that it does not slip out of the intake passage 17. Therefore, the assembly of the seal packing 68 to the intake cylinder 17 is not forgotten or lost.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  12 is a front view of the seal packing, FIG. 13 is a cross-sectional view taken along line 13-13 in FIG. 12, and FIG. 14 is the same view as FIG. 11 (first embodiment), which is the same as the first embodiment. Elements are given the same reference numerals.

  In the second embodiment, the structure of the seal packing 268 made of rubber packing sandwiched between the upper surface of the partition wall 14 and the lower surface of the lower plate 64 of the cleaner element unit Ue and the mounting portion thereof are slightly different from those of the previous embodiment. It is different. The seal packing 268 is formed in a square endless shape, and is fitted to the outer peripheral surface of the root portion of the rectangular tube-like intake passage 17 as in the first embodiment. At the intermediate portion in the width direction of the upper seal surface 271 and the lower seal surface 273 of the seal packing 268, lower lip pieces 272 and 274 are integrally projected on the upper side of the triangular shape. The cleaner element unit Ue is in close contact with the lower surface of the lower plate 64, and the lower lip piece 274 is in close contact with the upper surface of the partition wall 14. A plurality of inner retaining protrusions 275 as a retaining member are integrally protruded inwardly on the inner peripheral surface of the seal packing 268 in the circumferential direction, and the seal packing 268 is provided. A plurality of outer retaining protrusions 276 as projecting members are integrally protruded outward from the outer peripheral surface of the outer peripheral surface with a space in the circumferential direction.

  On the other hand, as shown in FIG. 14, an annular groove 277 is formed on the upper surface of the partition wall 14 of the lower cover body 12 so as to surround the root of the intake passage 17. Seal packing 268 is fitted. In addition, the lower seal surfaces 271 and 273 are in close contact with the bottom surfaces of the cleaner element unit Ue and the concave groove 277 of the partition wall 14 to prevent the outside air on the unclean chamber Cd side from leaking directly into the clean chamber Cc. Dust and the like are prevented from entering the engine E. The inner retaining protrusion 277 is closely engaged with the root portion of the outer peripheral surface of the intake passage 17, and the outer retaining protrusion 276 is closely engaged with the side surface of the concave groove 277. For example, when the cleaner element unit Ue is removed from the intake passage 17 in order to perform maintenance such as replacement or cleaning of the cleaner element unit Ue, the seal packing 268 remains attached to the cleaner element unit Ue from the intake passage 17. It is designed not to escape. Therefore, the assembly of the seal packing 268 to the intake cylinder 17 is not forgotten or lost.

  In this second embodiment, if the groove 277 is formed in the shape of a pigeontail in cross section and the seal packing 268 fitted in the groove is also formed in the shape of a pigeontail, the groove 277 from the groove 277 of the seal packing 268 is formed. Pull-out can be prevented more reliably.

  Next, a third embodiment of the present invention will be described with reference to FIGS.

  15 is a front view of the seal packing, FIG. 16 is a sectional view taken along line 16-16 of FIG. 12, and FIG. 17 is the same view as FIG. 11 (first embodiment), which is the same as the first embodiment. Elements are given the same reference numerals.

  In the third embodiment, the structure of the seal packing 368 made of rubber packing sandwiched between the upper surface of the partition wall 14 and the lower surface of the lower plate 64 of the cleaner element unit Ue and the mounting portion thereof are the first embodiment. And slightly different. The seal packing 368 is formed in a square endless shape, and is fitted to the outer peripheral surface of the root portion of the rectangular tube-like intake passage 17 as in the first embodiment. Lower lip pieces 372 and 374 are integrally projected on the upper portion of the seal packing 368 in the width direction of the upper seal surface 371 and the lower seal surface 373, and the upper lip piece 372 The cleaner element unit Ue is in close contact with the lower surface of the lower plate 64, and the lower lip piece 374 is in close contact with the upper surface of the partition wall 14. Further, a plurality of retaining protrusions 378 as retaining members are integrally projected downward from the lower surface of the seal packing 68 with a space in the circumferential direction.

  On the other hand, as shown in FIG. 17, an annular concave groove 379 is formed on the upper surface of the partition wall 14 of the lower cover body 12 so as to surround the root of the intake passage 17. A retaining protrusion 378 is fitted. The upper and lower seal surfaces 371 and 373 are in close contact with the cleaner element unit Ue and the partition wall 14 to prevent outside air on the unclean chamber Cd side from directly leaking into the clean chamber Cc, and dust and the like enter the engine E. Is preventing. The retaining protrusion 378 is closely engaged with the concave groove 379. When the cleaner element unit Ue is removed from the intake passage 17 in order to perform maintenance such as replacement or cleaning of the cleaner element unit Ue, the seal packing 368 The cleaner element unit Ue is kept attached to the cleaner element unit Ue so as not to escape from the intake passage 17. Therefore, the assembly of the seal packing 368 to the intake cylinder 17 is not forgotten or lost.

  As mentioned above, although one Example of this invention was described, this invention is not limited to the Example, A various Example is possible within the scope of the present invention.

Front view of a general-purpose engine unit having an air cleaner structure of the present invention 2 arrow view of FIG. Enlarged cross-sectional view along line 3-3 in FIG. Sectional view along line 4-4 in FIG. Sectional drawing which follows the 5-5 line of FIG. Sectional drawing which follows the 6-6 line of FIG. Sectional view along line 7-7 in FIG. Exploded perspective view of air cleaner Enlarged plan view of seal 1 packing along line 9-9 in FIG. Sectional drawing which follows the 10-10 line of FIG. Enlarged view of the imaginary line enclosure in FIG. Plan view of seal packing (second embodiment) Sectional drawing which follows the 13-13 line of FIG. Figure corresponding to FIG. 11 (first embodiment) Plan view of seal packing (third embodiment) Sectional drawing which follows the 16-16 line of FIG. Figure corresponding to FIG. 11 (first embodiment)

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Cleaner cover body 11 Upper cover body 12 Lower cover body 14 Partition 16 Discharge port 17 Intake passage 50 Intake port 68 Seal packing 71, 73 Seal surface 75 Retaining member (retaining protrusion)
268 Seal packing 271, 273 Seal surface 275, 276 Retaining member (Retaining protrusion)
368 Seal packing 371, 373 Seal surface 378 Stopping member (stopping protrusion)
379 Groove E Engine Ep Intake port Ue Cleaner element unit

Claims (5)

The cleaner cover body (10) is provided with an intake passage (17) for communicating the suction port (50) and the discharge port (16) provided therein, and a seal packing (68) is provided on the outer periphery of the intake passage (17). 268; 368) and the cleaner element unit (Ue), and the cleaner element unit (Ue) cleans the outside air taken in from the suction port (50) and then discharges it to the discharge port (16). In addition, in the sealing device in the air cleaner of the engine, the seal packing (68; 268; 368) prevents outside air from leaking directly to the discharge port (16).
The seal packing (68; 268; 368) is provided with a retaining member (75; 275, 276; 378) that closely engages the cleaner cover body (10), and the intake of the seal packing (68; 268; 368) is provided. A sealing device for an air cleaner of an engine, characterized by preventing a nuisance escape from the passage (17). The cleaner cover body (10) is composed of an upper cover body (11) and a lower cover body (12) fixed to the lower part of the upper cover body, and the upper cover body is formed on the partition wall (14) provided on the lower cover body (12). An intake passage (17) that communicates the suction port (50) provided in (11) and the discharge port (16) provided in the lower cover body (12) is provided, and a seal packing is provided on the outer periphery of the ventilation passage (17). (68; 268; 368) and the cleaner element unit (Ue) are overlapped and fitted, and the outside air taken in from the suction port (50) is cleaned by the cleaner element unit (Ue) and then discharged to the discharge port (16). The seal packing (68; 268; 368) is sandwiched between the cleaner element unit (Ue) and the partition wall (14) to prevent the outside air from leaking directly to the discharge port (16). In the sealing device in the air cleaner of the engine,
The seal packing (68; 268; 368) is provided with a retaining member (75; 275, 276; 378) tightly engaged with the lower cover body (12), and the intake of the seal packing (68; 268; 368) is provided. A sealing device for an air cleaner of an engine, characterized by preventing a nuisance escape from the passage (17).   The retaining member (75; 275) of the seal packing (68; 268) is adapted to be closely engaged with an outer peripheral surface of the intake passage (17). The sealing apparatus in the air cleaner of the described engine.   The retaining member (378) of the seal packing (368) is configured to closely engage with a concave groove (379) formed in the partition wall (14). Seal device for engine air cleaner. The said prevention member (75; 275,276) is formed in surfaces other than the sealing surface (71,73; 271,273) of the said seal packing (Ue), The said Claims 1 and 2 characterized by the above-mentioned. A seal device for an air cleaner of an engine according to claim 3 or 4.

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