JPH0369788A - Blind built-in double glass - Google Patents

Abstract

PURPOSE:To seal a bearing section positively by projecting the driving shaft of a blind disposed into a sealed space formed by a frame body and two glass plates outside the sealed space through a bearing device composed of an oil seal. CONSTITUTION:Two glass plates are bonded and fixed on both sides of a square frame-shaped frame body 2 respectively, sealed spaces 5 are shaped among the frame body 2 and the glass plates, and a blind is arranged in the sealed spaces 5. The driving shafts 11 of the blind are projected outside the sealed spaces 5 through a bearing device 13 composed of oil seals 21a, 21b. The driving shafts 11 are turned and driven by a drive installed outside the sealed spaces 5, and the blind in the sealed spaces 5 is lifted and lowered.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a double-glazed sealed structure with a built-in blind.

[Prior art] Conventionally, as a type of double knobbrush, a sealed space is formed with a frame and two glass plates, and a blind is placed in the sealed space and dried air is filled. , blinds that can be driven from the outside have been put into practical use. Such double glazing not only improves the sound and heat insulation effect by forming a sealed space, but also ensures the light shielding effect of the blind and prevents dew condensation within the sealed space.

[Problems to be Solved by the Invention] However, in the above-mentioned square glass, it is necessary to protrude the drive shaft for driving the blind from the outside to the outside of the sealed space, and the shaft seal of this drive shaft becomes a problem. In other words, due to changes in the internal pressure of the sealed space and changes in atmospheric pressure, which are caused by the difference in hot water temperature between day and night, a difference in air temperature occurs between the inside and outside of the space.
Conventional shaft seals cannot withstand this pressure difference,
There was a problem in that it was difficult to maintain a sealed state for a long period of time.

An object of the present invention is to provide a sealed structure that can reliably maintain the 1゛.1 state of the TL space in a double-glazed window equipped with a drive shaft protruding outside the sealed space as described above. .

[Means for Solving the Problems 1] In order to achieve the above object, the present invention forms a sealed space between a frame and two glass plates, arranges a blind in the sealed space, Drive the blind drive shaft with a drive device outside the sealed space! In single-pane glass, the drive shaft protrudes out of the sealed space via a bearing device composed of an oil seal.

[Operation 1] By the above means, the bearing portion of the drive shaft is reliably sealed with an oil seal.

[Example] An example embodying the present invention will be described below with reference to the drawings.

As shown in FIGS. 2 and 3, the double glass 1 has glass plates 4 adhesively fixed to both sides of a rectangular frame 2 via butyl rubber 3. A sealed space 5 is formed between the two.

The sealed space 5 is filled with dry air and a blind 6 is provided. In other words, blind 6!
! ! An upper head box 7 and a lower head box 8 are fixed to the frame 2 at the top and bottom of the iJ space 5, respectively,
Ladder cord 9 stretched between both head boxes 7 and 8
Multiple stages of slats 10 are supported. By rotationally driving a drive shaft 11 disposed within the upper head box 7, the angles of each slat 10 can be adjusted in the same phase. Note that a support wire 12 whose both ends are fixed to the frame body 2 is passed through each slat 10 to form a sealed space 5.
This prevents unnecessary movement of the slats 10 within.

The drive IrItll is projected outside the frame 2 via a bearing device 13 and connected to an output shaft 15 of a gearbox 14. The output shaft 18 of a motor 17 is connected to the input shaft 16 of the gear box 14, and the operation of the motor 17 rotationally drives the drive shaft 11 via the gear box 1/I.

The structure of the early bearing device 13 will be explained according to FIG.
A bearing 20 is disposed on the base end side of one cylindrical case, and an oil seal 21, that is, a pair of oil seals 21a and 21b in this embodiment, is disposed on the distal end side.
The drive shaft 11 is connected to this bearing 20 and oil seal 21.
It is rotatably supported by a and 21b. The oil seals 21a and 21b are formed of nitrile rubber into an annular shape, and an annular steel member 22a and an annular spring 22b are embedded inside to ensure elasticity, and are arranged in opposite directions. .

Therefore, the inner oil seal 21a maintains its airtightness effectively when the air pressure inside the sealed space 5 is higher than the outside, and the outer oil seal 21b maintains its airtightness effectively when the air pressure inside the sealed space 5 is lower than the outside. Retentivity works effectively.

The drive shaft 11 is supported by the bearing 20 and oil seals 21a and 21b and protrudes outside the case 19.
Parts supported by the oil seals 21a and 21b are especially mirror-finished.

A mounting shaft 23 is formed at the distal end of the case 19, and the drive shaft 11 passes through the mounting shaft 23 and projects out of the case 19. A screw is engraved on the outer peripheral surface of the mounting shaft 23, and a nut 24 and the case 19 are screwed into the screw.
The case 19 is fixed to the frame 2 so that the frame 2 is sandwiched between the distal end surface and the frame 2. J3, an O-ring 25 is interposed between the front end surface of the case 19 and the frame body 2, and a washer 26 and a butyl rubber 27 are sandwiched between the nut 24 and the outer surface of the frame body 2, so that they are connected to the inside and outside of the frame body 2, respectively. is sealed.

Now, in the bearing [113] configured as described above, the drive shaft 11 is connected to the pair of oil seals 21a, 21 in the case 19.
It is supported by b. Therefore, the oil seals 21a, 2
Due to the sealing characteristics of 1b, sufficient sealing performance can be ensured in the bearing device 13 of the drive@11. In particular, since the pair of oil seals 21a and 21b are disposed in opposite directions, the sealed state can be reliably maintained even if the air pressure inside or outside of the sealed space 5 becomes high.

[Efficacy of invention! ;! ! ] As described in detail above, the present invention provides an excellent bearing structure that reliably seals the bearing portion of the drive shaft in double-glazed glass having a drive shaft that protrudes outside the sealed space. It has a great effect.

[Brief explanation of drawings]

Figure 1 is a sectional view of a bearing device embodying this invention, Figure 2
The figure is a front view of a double-glazed glass that embodies this R-light, and FIG. 3 is a longitudinal sectional view thereof. W reaching space 5, drive shaft 11, bearing device 13, oil seals 21a, 21b.

Claims (1)

[Claims] 1. A sealed space is formed between the frame and the two glass plates,
In double glazing in which a blind is disposed within the sealed space and the drive shaft of the blind is driven by a drive device outside the sealed space, the drive shaft (11) is equipped with a bearing device (13) comprising an oil seal (21). ) A double-glazed window with a built-in blind that protrudes outside the sealed space (5).