JPH0614058U - Tubular silicone rubber packing - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To provide a packing that is easy to mount in the mounting groove of a food container, has little deformation, and maintains high waterproofness. [Structure] A tubular silicone rubber packing having linear ribs 3 formed in a length direction on an inner surface thereof.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is a tubular silicone rubber packing (hereinafter referred to as a packing) used for a food container or the like, for example, by forming a rib on the inner surface of the packing having a "Sun" -shaped cross section, the packing is, for example, a lunch box or the like. It relates to a highly waterproof packing that prevents deformation when it is installed in the mounting groove of the food container and does not fall over sideways even after installation.

[0002]

[Prior art]

 As food containers, various kinds of metal such as aluminum, brass, duralumin, or plastic such as polyethylene, polypropylene, acrylic resin, ABS resin, urea resin are currently on the market. In order to prevent leakage, packing is often used to seal between the container body and the lid.

For convenience of the packing, a rubber elastic body having a vertically long "Sun" -shaped cross section is frequently used as shown in FIG. That is, a central partition wall 3 is provided in the lateral direction between the flat portions 1 of the tubular outer wall in which the vertically long flat portions 1 facing each other are joined by the curved surface portion 2. This has no toxicity to the human body especially from the viewpoint of hygiene. Molded products such as fluororubber and silicone rubber are used.

[0004]

[Problems to be solved by the device]

 However, such a packing with a "Sun" -shaped cross section has a thin wall thickness of 3 mm or less when it is installed in the mounting groove of a food container in a vertically long state or a horizontally long state, and is liable to be twisted or hardened to cause a sealing error. .

[0005]

[Means for Solving the Problems]

 The present invention prevents deformation such as twisting and bending by forming linear ribs in the longitudinal direction on the inner surface of the packing having the conventional "Sun" -shaped cross section as described above for reinforcement. The purpose is to realize waterproofing, and the gist of this is a tubular silicone rubber packing characterized in that linear ribs in the lengthwise direction are formed on the inner surface.

The packing of the present invention will be described in detail below with reference to the drawings. In FIG. 1A, a linear chevron-shaped linear rib 4 is formed on the inner surface of the packing having a "H" shape in cross section. It is a thing. The linear ribs are linear convex portions formed in the lengthwise direction of the packing on the inner surface of the packing, that is, on the inner surface of the curved surface portion 2 and on both sides of the central partition wall 3, and are effective reinforcing members against the twisting and the hardness of the packing. Become. The thickness of the central partition wall 4 is preferably made slightly smaller than the thickness of the tubular outer wall, particularly the thickness of the flat portion.

FIG. 1 (b) shows a linear rib 4 provided also on the outer surface of the flat portion 1 of the packing shown in FIG. 1 (a), in which a groove for fitting the groove is formed in the mounting groove of the food container. This will prevent the packing from slipping sideways. FIG. 1C shows a packing in which the linear ribs 4 are also provided on the outer surface of the curved surface portion 2 of the packing, which is particularly useful in a vertically long state. FIG. 1 (d) shows that the linear ribs 4 are also provided on the inner surface of the flat surface portion 1 of the packing shown in FIG. 1 (a), and can be securely mounted in the mounting groove in either the vertically long state or the horizontally long state. It has the advantage of.

FIG. 1E shows a structure in which curved surface portions 2 are connected to each other to provide a central partition wall 5 in the vertical direction, and linear ribs 4 are formed on the inner surface of the flat surface portion 1 and both sides of the central partition wall 5. When the food container is installed horizontally in a mounting groove, the tubular outer wall is pushed to the center and the linear ribs 4 on both sides of the central partition wall 5 mesh with the linear ribs 4 on the inner surface of the flat portion 1 to prevent the packing from deforming. It is possible to prevent it from being twisted or twisted. As the shape of the linear ribs 4, in addition to the gentle mountain shape shown in FIG. 1, various shapes shown in FIGS. 2A to 2E can be used. With the packing of the present invention, the strength is high in spite of the thin wall thickness, and this effect is particularly remarkable when it is mounted in the mounting groove of the food container in a horizontally long state.

[0009]

【Example】

The load strength of the packing of the present invention was measured by a load curve measuring device shown in FIG. 3 (a) (only the outline part is shown). That is, when the packing is placed and fixed in a horizontally long state on the glass plate 6 and is pressed from above by the pressing element 7 having a diameter of 9 mm, the packing is compressed as shown in (b), but the load curve at this time is Is shown in FIGS. 4 (a) and 4 (b). (A) in the case of packing-shaped cross-section without the traditional rib "day", caused the difference between the point P ₂ of the end fallen a point P ₁ of the fall's first eye on the curve, clearly fall to the horizontal I understand that.

In the case of the rib-shaped "Sun" -shaped cross section of the present invention, as shown in (b), no drop is recognized on the curved line. This indicates that the ribs supported when the center buckled. 4 (c) and 4 (d) show the dimensions of the packings tested in (a) and (b), respectively. Further, even when the packing is installed vertically in the food container mounting groove, the packing of the present invention can prevent twisting and bending to some extent by the linear rib on the inner surface.

[0011]

[Effect of device]

 The packing of the present invention is easy to mount in the mounting groove of a food container, does not undergo deformation such as twisting or bending, and is excellent in waterproofness.

[Brief description of drawings]

1A to 1E are cross-sectional views of various packings of the present invention.

2A to 2E are cross-sectional views of various linear ribs of the present invention.

3A and 3B are explanatory views of a load test.

FIG. 4 is a graph showing the results of a load test, in which (a) is the conventional packing, (b) is the packing of the present invention, and (c) and (d) are the dimensions of the respective parts. FIG.

FIG. 5 is a sectional view of a conventional packing.

[Explanation of symbols]

 1 plane part 2 curved surface part 3 central partition wall 4 linear rib 5 central partition wall 6 glass plate 7 presser

Claims (1)

[Scope of utility model registration request] 1. A tubular silicone rubber packing having an inner surface formed with linear ribs in a length direction.