JPH0239985Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improved gasket for an aerosol container that is inserted into the coiled part at the end of the valve structure of the aerosol container, and which is inserted along the circumference of the curled part of the aerosol container. It is an object of the present invention to provide a gasket that forms a plurality of pressure contact protrusions to enhance the sealing effect and is easy to manufacture.

Below, we will explain the drawings showing the embodiments of the present invention. Fig. 1 is a partially cross-sectional side view of a mountain cap in which a gasket made of an elastic material such as plastic or rubber is attached, and Fig. 2 is a side view of a deformed mountain cap. FIG. 3 is a partial cross-sectional view of the gasket. Reference numeral 1 denotes a gasket made of an elastic material such as plastic or rubber, and the outer circumferential upper surface 4 is made to match the inner R shape extending from the inner base end 3a of the winding part 3 of the mountain cap 2 to the outer upper part 3c excluding the outer outer end 3b. The bottom surface of the outer periphery is an inverted L-shaped joint wall surface notched outwardly by a horizontal transverse wall 5 extending from the outer edge of the gasket 1 toward the center and a vertical wall 6 continuously curved downward from the inner end of this horizontal line. are formed into an upper part 1a and a side wall part 1b which contact the upper outer surface and the inner inner surface of the outer periphery of the curled part 8 of the aerosol container. Container curl part 8
Two protrusions 9 are provided on the lower surface of the upper portion 1a that contacts the inner and outer circumferential surfaces of the container curl portion 8. Reference numeral 7 designates a downward annular concave portion which is cut out at a constant width and depth, leaving a thin wall portion 10 in the middle of the width of the horizontal cross wall 5 of the upper portion 1a of the gasket, so as to follow the circumferential upper surface of the curled portion 8 of the aerosol container. Sharp ridges 9, 9 are provided at the abutting portions of the side walls 7a of the annular recess 7 and the horizontal cross wall 5 on the left and right opening edges of the annular recess 7 to interrupt the planar contact between the curled portion 8 and the horizontal cross wall 5. is formed and pressed into two strips on the inner and outer concentric circles on the circumference of the curled portion 8.

The gasket 1 having the above structure is either insert-molded into the inner groove of the winding part 3 of the mountain cap 2, or is manufactured into the same shape and then fitted and fixed into the inner groove of the winding part 3. Reference numeral 11 denotes a locking stepped portion of the mountain cap 2, which is provided with an external taper at the inner base end 3a of the winding portion 3 to receive the lower end of the side wall portion 1b of the gasket 1.

The gasket 1 in FIG. 2 is connected to the side wall portion 1b.
It has a structure with a cup-shaped part 1c that extends widely to cover the inner inner surface of the mountain cap 2, and has a rust-proofing and corrosion-proofing effect. Reference numeral 11a denotes a deformed locking step portion, which has a plurality of bulging convex portions on the side surface of the inner proximal end portion 3a of the winding portion 3, thereby forming an uneven fitting structure with the gasket 1.

As mentioned above, this invention can be applied to plastics, rubber, etc.
The gasket made of an elastic material is widely interposed in the rolled-up portion between the aerosol container and the mountain cap due to the integral structure of the upper portion 1a and the side wall portion 1b that contact the upper surface outer periphery and inner outer periphery of the curled portion 8 of the aerosol container. to enhance the sealing effect, and to improve the sealing effect, and to
An annular recess 7 that interrupts plane contact with the curl part 8 of the aerosol container is formed along the circumferential direction of the curl part 8 in the horizontal transverse wall 5 of the aerosol container. Since the outer periphery is provided with two sharp protrusions 9, 9 that press against each other on the inside and outside, the elasticity is strengthened and double sealing is achieved on the inside and outside, making it possible to achieve more effective sealing during winding. This has the effect of simplifying the structure and making it easy to manufacture.

[Brief explanation of the drawing]

FIG. 1 is a partial side view of the aerosol container with the wrapper cut away, and FIG. 2 is a sectional view of the wrapper in a modified form. DESCRIPTION OF SYMBOLS 1... Gasket, 1a... Upper part of gasket, 1b... Side wall part of gasket, 2... Mountain cap, 3... Winding part, 7... Annular recessed part,
8... Curled portion of aerosol container, 9... Two protruding stripes.

Claims (1)

[Scope of utility model registration request] In the gasket inserted between the opening of the aerosol container and the winding part on the valve component side of the mountain cap, the gasket made of an elastic material such as plastic or rubber is inserted upward along the inside surface from the upper surface of the winding part. Two protruding strips 9 are formed in a vertical cross-sectional shape by the portion 1a and the side wall portion 1b, and press against the inner and outer circumferential upper surface of the container curl portion 8 on the lower surface of the upper portion 1a that contacts the container curl portion 8. Gasket for aerosol containers made by molding.