JPS62106124A - Enclosing body - Google Patents

Abstract

PURPOSE:To provide satisfactory ventilation and filter action by providing a sheet metal reinforcement connected to a portion of an enclosing elastic body with a plurality of projections on the tops or bottoms of which are respectively provided fine crack through holes. CONSTITUTION:An elastic body 1 is connected to a sheet metal reinforcement 2a provided with crack through holes 4. The crack through holes 4 fulfilling filter effect are formed by compressing or stamping said reinforcement to form irregular projections 3 such that the interiors of the tops or bottoms of projections generate partial material strains to be broken for forming fine cracks. These crack through holes 4 are fine gaps such as cracks, fissures, fractures, etc. capable of passing air, but incapable of passing foreign substances, dust or the like. Thus, satisfactory ventilation and filter effect for reducing a difference between the internal and external pressure can be obtained by a simple construction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sealing body that seals the inside and outside of a rotating member such as a shaft, and specifically relates to a reinforcing structure for the sealing body.

[Conventional technology]

Conventionally, the sealing body that seals against the increase and decrease in pressure inside the bearing caused by the rotation of the shaft is pressed against one side of the bearing inside the bearing as the pressure increases and decreases, causing sliding noise or vibration, resulting in significant wear and tear. I was early.

As a countermeasure for this, a window penetrating the inside and outside of the bearing is installed at a suitable place on the shield plate as in Utility Model Publication No. 43-24167, and a sealing body with an oil filter made of wire mesh or the like fixed to the window is used.
A sealed body, such as No. 5-26492, has been developed in which a reinforcing plate having a through hole is attached to the inner surface of a main body made of an elastic material, a recess is provided, and a suction cut is provided in the recess.

[Problem that the invention seeks to solve]

However, since the above-mentioned structure requires a lot of effort and precise dimensions, it is inevitably disadvantageous in terms of price, and when it comes to the latter type of sealed body with a suction cut, it is difficult to open the suction cut. This shape is not suitable for dog production because it requires a high degree of skill and precision.

In addition, regarding the adhesiveness of the elastic body to the reinforcing member, there are many problems such as the need for expensive and strong adhesives in order to attach the elastic body to the HTI strong member with an untreated smooth surface. It had some serious drawbacks.

It is an object of the present invention to eliminate these drawbacks and provide an excellent sealed body that can quickly relieve the pressure difference between the inside and outside and prevent the intrusion of foreign matter.

A detailed description will be given below with reference to the drawings.

[Means for solving problems]

The present invention relates to an elastic body 1 which is installed between two mutually rotating members such as bearings and seals the inside and outside of the two members as shown in FIG.
and a reinforcing member 2, the reinforcing member 2 being joined to a part of the elastic body 1 for the purpose of reinforcing it.
is formed from a plate-shaped metal, and the metal plate-shaped reinforcing member 2a is processed with a plurality of protrusions 5, and a fine crack through-hole 4 is provided at the top or bottom of the protrusion surface. There is.

[Effect]

With such a configuration, the present invention exhibits the following excellent effects.

That is, the reinforcing member 2, which is a basic component of the sealing body A, has a reinforcing function and a fitting function to the mounting part, but the present invention also provides air permeability that instantly relieves the pressure difference between the inside and outside of the bearing. The filter effect was achieved without increasing other structures.

In order to provide the crack through holes 4 as shown in FIG. 1 in the reinforcing member 2 made of plate metal to exhibit the filtering effect, an uneven protrusion 3 is formed by a known method such as compression forming or embossing.
However, partial material strain is generated inside the top or bottom of the protrusion formed at this time, causing the strained material portion to break and form a small crack. In implementation, the metal material used must be selected, and the width and depth of the cracks must be adjusted depending on the size and height of the protrusion shape to accommodate the required ventilation. As indicated by the physical condition in which it is formed and its name, the shaped crack through hole 4 is a minute gap similar to a structure such as a crack, slit, or crack, and allows gas to pass through, but foreign matter, dust, etc. It has a highly effective filter that completely prevents.

〔Example〕

To carry out the present invention, for example, there is a sealed body A as shown in FIG. Connect in an exposed position to provide ventilation and filtering effects. At this time, the protrusion processing 6 provided on the reinforcing member 2a is not limited to a partial shape as shown in FIG. 2, but it is also possible to perform protrusion processing 6 on the entire surface of the reinforcing member 2a to form a reliable fitting part with the elastic body 1. Various shapes can be implemented.

Further, the shape of the crack through hole 4 to be formed is not limited to a simple linear shape, but can be formed into various shapes such as a side support shape and a star shape.

〔Effect of the invention〕

As explained below, the present invention is an ideal sealed body that has an extremely simple structure, exhibits good air permeability that alleviates the pressure difference between the inside and outside, and also has a filter function.

[Brief explanation of drawings]

FIG. 1 is an enlarged partial sectional view showing the sealed body of the present invention. FIG. 2 is a sectional view showing an embodiment of the sealed body of the present invention. A... Sealing body 1... Elastic body 2... Reinforcement member 3... Protrusion processing 4... Crack through hole

Claims (1)

[Claims] A sealing body A consisting of an elastic body 1 and a reinforcing member 2 that is installed between two mutually rotating members and seals the inside and outside of the two members.
A reinforcing member 2 that is joined to a part of the elastic body 1 to reinforce it is formed from a plate-shaped metal, and a plurality of protrusions 3 are formed on the metal plate-shaped reinforcing member 2a to form a top or A sealed body characterized by having a minute crack through hole 4 at the bottom.