JPH0585413U - Synthetic resin tubular air cleaner casing - Google Patents

Abstract

(57) [Summary] [Purpose] In the case of a cylindrical air cleaner casing made of synthetic resin by molding, where the air outlet at the center of the closed end wall is bent into an L shape, the direction of the air outlet can be freely turned even after the air cleaner is assembled. The L-shaped outlet is diversified in the circumferential direction so that it can be moved. [Structure] The closed end wall of the casing is separated as a cover integrally formed with an air outlet protruding from the center and bent into an L shape, and the inner surface side is also integrally formed with a height sufficient to cover the outer periphery of the element end. A cylindrical portion is provided, and an annular projection is provided in the outer peripheral direction of the distal end thereof, and slits are provided at a plurality of positions so as to cut the annular projection at equal intervals along the entire circumference of the cylindrical portion. On the other hand, in the casing, the front end on the closed end wall side is bent to the inner peripheral side to form a double cylinder, and the bent wall has a diameter that makes close contact with the outer periphery of the cylindrical portion of the cover. The height is such that it abuts against.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cylindrical air cleaner made of synthetic resin, and more particularly to an air cleaner having a structure in which an air outlet provided in the center of a closed end wall of a casing formed by molding is bent into an L shape.

[0002]

[Prior Art]

 Conventionally, in the case of a cylindrical shape made of synthetic resin, when the air outlet at the center of the closed end wall of the casing is bent into an L shape by molding, it is possible to form it integrally with the closed end wall of the casing, but different circumferential directions are required. In order to diversify so that it can respond effectively to the above, it was the current situation that the outlet pipe was separated as a separate component and the pipe was directed or glued or welded in the required circumferential direction.

[0003]

[Problems to be solved by the device]

 If the outlet pipe is glued as a separate part or welded in one of several different ways, the outlet hole in the center of the casing end wall is on the secondary side of the element and is therefore completely impervious to the ingress of dust from the joint. Since airtightness is required, the number of man-hours required for careful welding and man-hours required for checking the airtightness after joining will reduce productivity during mass production, as well as vibration and temperature changes during operation when mounted on a vehicle. There were cases in which the airtightness of the joint was impaired due to factors such as the above, and there were many problems. As one of the solutions to these problems, a casing end wall whose opening diameter is expanded to the primary side of the element is used as a wide cover in which an outlet hole at the center of the casing end wall and an L-shaped outlet pipe are integrally formed. It is possible to prevent dust from entering the secondary side of the element even if the airtightness of the joint is incomplete by covering and joining. However, even if the jointing surface of the cover expands and the joining man-hours increase, and even if the airtightness is slightly mitigated, it is necessary to perform a temporary airtightness check that sets a leak standard, and thus the productivity of the factory There was still the issue of not becoming.

[0004]

[Means for Solving the Problems]

 One of the solutions to the above-mentioned problems was a wide cover in which the exit hole of the casing end wall and the exit pipe bent into an L shape were integrally formed, and the inside diameter was slightly larger than the outer circumference of the element. , A cylinder with a height that surrounds the end of the element is added as an integral molding, and an annular retaining protrusion is provided in the outer peripheral direction of the tip, and a slit cut near the base of the cylinder is used. Provide multiple locations at equal intervals. In addition, on the closed end wall side of the casing, following the joint surface of the cover, fold it to a length that has the same diameter as the outer circumference of the cover's cylinder and contacts the annular protrusion when the cylinder is fitted. The bending wall forms a double cylinder with the casing side wall.

[0005]

[Action]

 When the cover is joined and inserted into the end wall of the casing, the outer diameter of the annular projection of the cylinder is larger than the inner circumference of the folded wall of the casing, but it can be easily inserted and fitted because it is compressed by the action of the slit. After insertion, it will hang on the bent end to prevent it from coming off. Although the annular projection serves as a retainer for the cover, it can be freely rotated so that the circumferential direction of the L-shaped outlet can be freely determined after the air cleaner is attached.

[0006]

【Example】

 Hereinafter, a detailed description will be given based on an embodiment of the present invention with reference to the drawings. FIG. 1 is a partially cutaway view of a synthetic resin tubular air cleaner according to the present invention. Since the side wall 2 of the tubular casing 1 has an inlet 3 and the closed end wall 4 side is closed by a cover 6 integrally formed with the L-shaped outlet 7 shown in FIG. The inner surface of the element is integrally molded with a cylindrical portion 8 having a diameter slightly larger than the outer circumference of the element 11, and the height is such that the end portion of the element 11 including the gasket 12 is covered to prevent the tip from coming off in the outer peripheral direction. In addition to providing the annular projection 9, the slits 10 are formed at a large number of positions at equal intervals over the entire circumference, and slits 10 cut near the height of the tubular portion 8 are provided so as to cut the annular projection 9. After the cover 6 is inserted into the casing 1, the annular projection 9 of the tubular portion 8 hangs on the end of the bent wall 5 to prevent removal, and the element 11 is inserted from the opening end side of the integrated casing 1. Since the gasket 12 separates the primary side and the secondary side of the inflowing air by pressing this with the dust pan 13 via the latch, even if dust enters from the insertion portion of the cover 6, the gasket 12 will not reach the primary side. Entering it has no effect on the secondary side.

[0007]

[Effect of the device]

 The closed end wall of the casing is separated as a cover that is integrally molded with the L-shaped bent outlet, and it functions as a retainer after it is inserted into the casing, but it can be rotated, but it does not change the molding shape due to the action of an annular protrusion. The circumferential direction of the outlet is diversified. Since the insertion part between the casing and the cover is on the primary side of the element, there is no need to bond or weld the joint part, so there is no need to maintain airtightness. This will reduce man-hours and costs by reducing the cost. Although the above is described based on the embodiment of the present invention, it is needless to say that various changes and modifications are possible without being limited thereto.

[Submission date] September 20, 1991

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] 0002

[Correction method] Change

[Correction content]

[0002] In the synthetic resin-made cylindrical, closed end wall central air outlet of the casing and one body by molding is the case of the outlet pipes bent in L shape immediately after leaving the end wall, and the end wall Although it is possible to integrally mold the outlet pipe, separate the outlet pipe as a separate part and attach it to the required circumferential direction in order to effectively respond to the demand that the air inlet direction is the same and the outlet circumferential direction is different. It was the current situation that they were bonded with the exit facing.

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be corrected] 0003

[Correction method] Change

[Correction content]

[0003] When adhering toward an outlet at determined circumferential outlet pipe as a separate component, the casing end wall central outlet hole due to the secondary side of the element, to prevent dust from entering from the contact attachment part However, due to the careful man-hours for bonding and the man-hours required for air-tightness check after bonding , the productivity during mass production declines, and vibration and examples of airtightness of contact attaching portion is damaged by changes in temperature have had many problems. As an example of a solution to these problems, as a wide cover in which an outlet hole in the center of the casing end wall and an L-shaped outlet pipe are integrally formed, the casing end wall whose opening diameter is expanded to the primary side of the element is covered. By directing the outlet in the specified circumferential direction and bonding, it is possible to prevent dust from entering the secondary side of the element even if the airtightness of the bonded part is incomplete. However, even if the adhesive surface of the cover expands and the adhesive man-hours increase, and even if the airtightness is slightly mitigated , a tentative airtightness check with a leak standard is required to inspect the adhesive state. However, there was a problem that productivity could not be improved .

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0006] As an example of the above-mentioned solution to the problem, a wide cover in which the outlet hole of the casing end wall and the outlet pipe bent into an L shape are integrally formed is provided. in diameter, together with the element is added as integrally molded cylindrical portion having a height enough to surround the end portion when it is inserted, provided with a stop protrusion omission annular in the outer circumference of the leading end direction, the cylindrical portion bid Slits cut close to each other shall be provided at multiple points at equal intervals. Further, the connection Ku inner circumference side to the contact surface of the cover in the closed end wall of the casing, in diameter at the close fit to the cylindrical outer periphery of the cover, the annular projection when fitting the tubular portion equivalent It is bent to a contact length, and the bent peripheral wall forms a double cylinder with the casing side wall .

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0005

[Correction method] Change

[Correction content]

When the cover is inserted into the end wall portion of the casing, the outer diameter of the annular projection of the cylindrical portion is larger than the inner circumference of the bent wall of the casing, but the sleeve is contracted to the inner peripheral side to facilitate insertion. After insertion, the ring-shaped projection hooks on the end of the bent peripheral wall of the casing to prevent it from coming off. When assembled housing the elements of the cover to the inserted casings, compressed gasket adhered to elementary DOO end plate, with the yo connexion said annular projection on its resilience urging strongly pressed against the peripheral wall edge Since the cover's cylindrical part is tightly fitted , rotation of the cover due to vibrations, etc. is suppressed, but since the cover can be rotated manually , the circumferential direction of the L-shaped outlet can be freely determined even after the air cleaner is attached. It means that you can do it.

[Brief description of drawings]

FIG. 1 is a partial cutaway view of a synthetic resin tubular air cleaner according to the present invention.

FIG. 2 is a partially cutaway perspective view of a cover integrally formed with an L-shaped outlet according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Casing 2 Side wall 3 Inlet 4 Closing end wall 5 Bending wall 6 Cover 7 L-shaped outlet 8 Cylindrical part 9 Annular protrusion 10 Slit 11 Element 12 Gasket 13 Dust pan

Claims (1)

[Scope of utility model registration request] 1. A structure in which a side wall of a synthetic resin cylindrical mold formed by molding has an inlet, an opening end after housing an element is sealed by attaching a dust pan, and an outlet at the center of a closed end wall at the other end is bent in an L shape. In this air cleaner, the closed end wall of the casing is separated as an integrally molded cover from the outlet, and this is fitted and assembled so that the inside of the cover has a surface slightly smaller than the outer diameter of the casing, and the outer circumference of the element is integrally molded. A cylinder with a slightly larger diameter and a height that covers the end of the element is provided, and an annular protrusion for preventing slipping out in the outer peripheral direction of the tip and slits cut near the base of the cylinder are evenly spaced around the entire circumference. The cover has a plurality of outlet holes, and the outlet hole at the center of the cover has a pipe-shaped outlet that is integrally formed and then bent into an L-shape. The cover is connected to the closed end wall side of the casing and the joint surface of the cover. A casing of a cylindrical air cleaner made of synthetic resin, which has the same diameter as the outer circumference of the portion and is bent to a length that comes into contact with the annular protrusion when the tubular portion is fitted.