JPH0579126U - Sealing device with elastic packing - Google Patents

Abstract

(57) [Abstract] [Purpose] In a sealing device in which an elastic sealing packing is sandwiched between two members, a sealing device which prevents a sealing failure caused by deformation of a contact surface of the packing or collapse of the packing. I will provide a. [Constitution] On the lower surface of one member 11 and on the upper surface of the other member 12, concave and convex grooves 14 and 15 having upper and lower annular walls 16 and 18 and inclined walls 17 and 18 are formed, and in these concave and convex grooves,
It has inner and outer peripheral walls 20 and 21, and an annular space 23 is provided between the peripheral walls.
The annular packing 13 provided with is arranged. The upper and lower ends of the annular packing 13 receive a compressive force from the side wall.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present application relates to a sealing device configured to seal between members via elastic packing.

[0002]

[Prior Art]

 A known sealing device for sealing between members through an elastic packing is, as shown in FIG. 4, forming an annular groove 1 in a member A and having a rectangular, circular, or elliptical cross section in the groove. A ring-shaped packing 2 of a shape or the like is inserted, the packing is brought into contact with the member B, and the members A and B are fastened by means such as bolts. A seal is obtained by compressing the packing between the members A 1 and B 2.

[0003]

[Problems to be solved by the device]

 In order to improve the sealing effect in the above structure, the fastening force between the members A and B is increased and the compression amount of the packing 2 is increased, or the height of the packing 2 is increased (FIG. 5). However, it is possible to increase the amount of compression. However, this would result in the following drawbacks. That is, if the tightening force is increased as in the former case, the sealing surface of the member B with which the packing 2 abuts may be deformed, which may cause a sealing failure. This phenomenon is likely to occur particularly when the member B is made of a plastic material and the ambient temperature is relatively high. In the latter case, the members A and B fall down when they are tightened (Fig. 5), resulting in poor sealing.

[0004]

[Means for Solving the Problems]

 An annular convex groove having an inclined surface and a lower annular wall on the upper wall is formed on the lower surface of one member, and an annular concave groove having an inclined surface and an upper annular wall on the bottom wall is formed on the upper surface of the other member. A ring packing having inner and outer peripheral walls connected by a connecting wall and having an annular space between the inner and outer peripheral walls is sandwiched between the concave and convex grooves, and upper and lower annular walls are inserted into the annular space. I did it.

[0005]

[Action]

 When both members are fastened together, the upper and lower ends of the inner and outer peripheral walls of the annular packing are pushed between the upper and lower annular walls in the groove and the inclined wall, and receive compressive force from both wall surfaces for compression. The compression of both members in the direction perpendicular to the sealing surface will be reduced. The annular packing is inserted and guided in the groove and does not fall.

[0006]

【Example】

 1 and 2 show a sealing device 10 showing an embodiment of the present invention, which comprises a member 11, a member 12 and an elastic annular packing 13. The member 11 has a convex groove 14 on the lower surface, and the member 12 has a concave groove 15 on the upper surface. The uneven grooves 14 and 15 are each formed in an annular shape.

An upper annular wall 16 hangs down from the center of the upper wall of the convex groove 14, and upper walls on both sides of the upper annular wall 16 form inclined surfaces 17, 17. A lower annular wall 18 is erected at the center of the bottom wall of the groove 15, and the bottom walls on both sides of the lower annular wall 18 form inclined surfaces 19, 19.

The annular packing 13 is made of an elastic material such as rubber and has an H-shaped cross section. The annular packing 13 has inner and outer peripheral walls 20 and 21, and these walls are connected by a connecting wall 22 at an intermediate portion between the walls. An annular space 23 is formed between the inner and outer peripheral walls 20, 21.

The annular packing 13 is sandwiched between the concave and convex grooves 14 and 15 of the members 11 and 12, and the upper and lower annular walls 16 and 18 are inserted into the annular space 23 to form a sealing device. The members 11 and 12 are fastened with fasteners such as bolts.

As shown in FIG. 3, there is a container 11a made of plastic and a mounting base 12a for the member.

[0011]

[Effect of the device]

 As described above, in the sealing device of the present invention, since the compression direction of the annular packing is the side direction, a large force is not applied in the contact direction of the packing. Therefore, the sealing surface of the abutting member is not deformed and the packing is prevented from falling down, so that the sealing failure caused by such deformation or falling down can be reliably prevented.

[Brief description of drawings]

 1 is a partial cross-sectional exploded view of the sealing device of the present invention. FIG. 2 is a partial cross-sectional view of the sealing device of the present invention. FIG. 5A and 5B are partial cross-sectional views showing a conventional device. FIGS. 5A and 5B are partial cross-sectional views showing another conventional device.

[Explanation of symbols]

 11, 12 member 13 annular packing 14 convex groove 15 concave groove 16 upper annular wall 17 inclined surface 18 lower annular wall 19 inclined surface 20, 21 inner and outer peripheral wall 22 connection wall 23 annular vacant chamber

Claims (1)

[Scope of utility model registration request] 1. An annular convex groove having an inclined surface and a lower annular wall on an upper wall is formed on the lower surface of one member, and an inclined surface and an upper annular wall are formed on the bottom wall on the upper surface of the other member. An annular groove having an annular groove is formed, and an annular packing having an inner and outer peripheral wall connected by a connecting wall and an annular space provided between the inner peripheral walls is sandwiched between the uneven grooves, and the upper and lower annular walls are provided in the annular space. A sealing device that has elastic packing inserted.