JPH11324506A - Rubber packing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rubber packing of high sealing performance swelling by invasion of rain water and being easily molded by providing a lip part and a water swelling seal material in a rubber packing for holding watertightness at fitting a plate glass to a supporting frame. SOLUTION: A plate glass 1 is glazed into a supporting frame 2 made of aluminum sash or the like through a rubber block 4, and watertightness on the outside and the inside is held by interposing packings 5 and 12. This outside packing 5 is made of synthetic rubber such as silicone rubber, it is provided with a lip part 8 and a groove receiving water swelling seal maternal 11, and integratedly molded by extrusion. The seal maternal 11 which is mixed powder of high molecular water absorbing agent with silicone rubber, chloroprene rubber, or the like, extruded into a string shape, and vulcanizingly molded, is fitted into the groove. The seal material 11 is swelled by invaded rain water, and the lip part 8 is strongly pressed against the glass face 1, so that rain water does not invade from the gap even at strong wind and rain. Hereby, invasion of rain water can be surely obstructed for long years.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber packing that is interposed between a window frame made of aluminum sash or the like and a sheet glass to prevent rainwater from entering the room from around the sheet glass.

[0002]

2. Description of the Related Art Conventionally, as one method for maintaining watertightness and airtightness between a glass sheet attached to a window frame and a window frame, a packing having rubber elasticity is interposed. It was necessary to improve the sealing performance with the glass surface while taking into account the ease of the mounting work.

For example, in Japanese Utility Model Application Laid-Open No. 6-8684, the hardness of the silicone rubber forming the rubber packing is changed between a portion fitted to the window frame and a portion closely attached to the glass, and the former portion has a high hardness. It has been proposed to configure the latter part with low hardness.

[0004]

However, there is a limit to forming the portion to be in close contact with the glass with low-hardness rubber, and since it has a certain degree of hardness, a minute gap is formed between the glass surface. In the case of strong wind and rain, there is a possibility that rainwater may enter the room from the gap.

In order to integrally form rubber packings having partially different hardnesses, a plurality of rubber extruders are required, and materials having different hardnesses are merged and integrated in a crosshead. In addition, there is a problem that management is complicated and manufacturing equipment is complicated.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problem, and an object of the present invention is to make it possible to easily form a rubber packing having improved sealing properties with a glass surface.

[0007]

According to the present invention, a packing body for attaching a plate glass to a support frame such as a sash and maintaining the watertightness of the fitting portion with the plate glass is brought into contact with the plate glass surface. With a lip part, a water-expandable sealing material is attached to the sealing material receiving groove formed in the packing body, and the lip part is pressed by the swelling of the water-expandable sealing material and pressed against the sheet glass surface. is there.

In addition, the packing is engraved with a string-shaped water-swellable sealing material obtained by mixing a rubber base material with a polymer water-absorbing agent, near the lip portion of the surface of the packing body exposed outside the room. It is configured by fitting into the sealing material receiving groove.

According to the present invention, a rubber packing is constituted by a packing body attached to a support frame and a water-swellable sealing material mounted in the packing body, and a polymer water-absorbing agent contained in the water-swelling sealing material absorbs moisture. When gelling and swelling, the lip portion of the packing body is pressed along with the swelling, and closely adheres to the glass surface without any gap, thereby completely preventing the infiltration of wind and rain.

[0010] The present invention also provides a groove formed on a surface of the packing body, which is formed by ordinary extrusion molding, and is exposed to the outside.
With a simple combination of fitting a water-swellable sealing material extruded into a string, it is possible to obtain a rubber packing with improved water-swelling properties and improved sealing properties, as well as water-swellability. Even if the conductive sealing material is inferior in weather resistance, it is stored in a place not exposed to direct sunlight, so that it can withstand long-term use without deterioration.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an enlarged sectional view of a rubber packing 5 according to the present invention, and FIG. 2 is a pair of plate glasses 1, 1 on a support frame 2 made of aluminum sash or the like with rubber packing 5 on the outdoor side A and packing 12 on the indoor side B. It is sectional drawing which shows the state which attached.

In the support frame 2 into which the glass sheet 1 is fitted, fitting grooves 3 for mounting the rubber packing 5 and the packing 12 are formed inwardly. A rubber block 4 is provided to support and slide freely.

Reference numeral 6 denotes a packing body of the rubber packing 5 according to the present invention, which is attached to the outdoor side. A synthetic rubber material such as silicone rubber is integrally formed in a belt shape by extrusion and fitted into the fitting groove 3 of the support frame 2. And a lip portion 8 which comes into contact with the surface of the glass sheet 1. A sealing material accommodating groove 10 is formed near the lip portion 8 on a surface portion 9 of the packing body 6 which is exposed outside. Have been.

Numeral 11 denotes a water-swellable sealing material fitted in the sealing material accommodating groove 10. This sealing material 11 is obtained by mixing a rubber elastic material such as silicone rubber or chloroprene rubber with a polymer water absorbing agent powder. Then, vulcanization molding by extrusion molding is performed in a string shape.

The above-mentioned polymer water-absorbing agent is in a powdery state in a non-water-absorbing state, but has a property of gelling when water is absorbed and expanding its volume. It has the property of holding and not releasing.

Therefore, when the sealing material 11 mounted in the accommodation groove 10 expands in water, the lip 8 near the bulging portion in the radial direction is strongly pressed against the surface of the sheet glass 1.

Since the housing groove 10 of the packing body 6 is open to the outside along the longitudinal direction, it can be easily mounted by inserting the sealing material 11 from this opening.

Reference numeral 12 denotes a packing having rubber elasticity attached to the support frame 2 on the indoor side, and maintains watertightness and airtightness between the indoor glass plate and the window frame.

[0019]

As described above, according to the present invention,
When the water-swellable sealing material inserted into the housing groove of the packing body absorbs rainwater and expands, the lip that is in contact with the plate glass surface is pressed more strongly, so the gap around the plate glass is more completely sealed. It exhibits excellent sealing properties and can reliably prevent rainwater from entering for many years.

Further, since the water-swellable sealing material is disposed in a place where the rainwater is easy to be poured, such as a housing groove on the surface of the packing body, which is exposed outside the room, even if it is light rain, it immediately absorbs water. As a result, the water-swellable sealing material expands more quickly than in the case where a water-swellable seal is attached to a lip portion abutting on the glass surface, for example, to ensure reliable sealing. In addition, molding of the rubber packing is easy.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view showing one embodiment of a rubber packing according to the present invention.

FIG. 2 is a sectional view showing an attached state of a rubber packing.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet glass 2 Support frame 3 Fitting groove 4 Rubber block 5 Rubber packing 6 Packing main body 7 Locking part 8 Lip part 9 Surface part 10 Seal material accommodation groove 11 Water-expandable seal material 12 Packing

Claims (2)

[Claims] 1. A rubber packing for fitting a plate glass to a support frame such as a sash and maintaining the watertightness of the fitting portion, wherein a packing body attached to the support frame has a lip portion abutting on a plate glass surface, A rubber packing, wherein a water-swellable sealing material is mounted in a sealing-material receiving groove formed in a packing body, and a lip portion is pressed by a swelling of the water-swellable sealing material so as to be pressed against a sheet glass surface. 2. A sealing material housing in which a string-shaped water-swellable sealing material formed by mixing a rubber base material and a polymer water-absorbing agent is engraved near a lip portion of a surface portion of the packing body exposed outside the room. The rubber packing according to claim 1, wherein the rubber packing is fitted in the groove.