JPH0893337A - Window frame - Google Patents

Abstract

PURPOSE: To fit a clamping bolt simply and surely in a transparent glass plate- containing window frame constituting sight holes of gauges. CONSTITUTION: A pair of a main frame body 4 and a sub-frame body 5 are clamped by a plurality of bolts 12 while holding the port edge section of the window port 2 of a wall plate 1. A transparent plate 3 is held between both frame bodies 4, 5 through a packing 6. An engaging groove 10 is formed to the main frame body 4. The bolt 12 has a stop seat 12b at the base end of a screw shaft section 12a. The stop seat 12b of the bolt 12 is fitted slidably into the engaging groove 10 while attaining detent and outward slipping-off prevention. Cylinder nuts 16 made of plastics are screwed to the screw shaft sections 12a of each bolt 12, thus temporarily fixing each bolt 12 at the specified places of the engaging groove 10 of the main frame body 4 without positional displacement. Through-holes 15 are formed to the sub-frame body 5. The screw shaft sections 12a of each bolt 12 are penetrated into the through-holes 15 of the sub-frame body 5, and nuts 13 are screwed to the screw shaft sections 12a from the rear side of the sub-frame body 5.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Front panels such as cubicles, covers (boxes) for various machines, entrance doors of electric rooms, etc. have peep windows with transparent plates such as glass plates to peep inside instruments and the like. It is formed. In oil tanks and the like, a vertically long sight glass is formed to see the liquid level inside.
The present invention relates to a window frame for such a peep window, that is, a window frame for attaching a transparent plate to a window provided on a wall plate.

[0002]

2. Description of the Related Art Japanese Patent Publication No.
033 gazette, the contents of which will be described with reference to the accompanying drawings. First, in a window frame for attaching the transparent plate 3 to the window 2 provided on the wall plate 1, first, the window frame is arranged inside and outside the window 2 of the wall plate 1. Has a pair of main frame body 4 and sub-frame body 5, and each of the main frame body 4 and the sub-frame body 5 is made of metal,
The outer peripheral frame portions 7 and 8 are formed in an annular shape having a predetermined width.

An annular packing 6 is interposed between the outer peripheral frame portions 7 and 8 of the main frame body 4 and the sub frame body 5. A plurality of bolts 12 are arranged on the inner surface of the outer peripheral frame portion 7 of the main frame body 4 at appropriate intervals in the circumferential direction. The sub-frame body 5 has through holes through which the screw shaft portions 12a of the respective bolts 12 pass. 15 are provided respectively.

Thus, from the back side of the sub-frame body 5, each bolt 1
By screwing the nut 13 onto the tip of the screw shaft portion 12 a of the second screw shaft portion 12, the outer peripheral frame portions 7 and 8 of the main frame body 4 and the sub frame body 5 attach the packing 6 to the edge portion of the window 2 of the wall plate 1. The outer peripheral edge of the transparent plate 3 is sandwiched between the outer peripheral frame portions 7 and 8 via the packing 6 while being sandwiched from inside and outside. in this way,
When the bolts 12 are attached to the main frame body 4 in advance, the location is not lost and the construction on the site becomes easier. For this reason, conventionally, the bolts 12 are welded to the main frame 4 and integrally implanted.

[0005]

However, the main frame 4 and the sub-frame 5 are generally made of an aluminum alloy extruded shape from the viewpoint of ensuring corrosion resistance. Welded and finished in an annular shape. The work of welding the bolts to the main frame made of such a material is originally difficult, requires skill, and is time-consuming. Nevertheless, there is a problem in the welding strength of the bolt to the main frame. for that reason,
Most of the complaints were that the bolt was disengaged from the main frame by over-tightening the nut to the bolt. Therefore, an object of the present invention is to obtain a window frame in which anyone can securely and easily attach the bolts to the main frame body and the bolts will not come off when tightened too much during use. Another object of the present invention is to obtain a window frame that can securely temporarily fix a bolt described later to a specified position and can easily perform a bolting operation on site.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a screw shaft portion 1 as shown in FIG.
A bolt 12 having a stopper 12b at the base end of 2a is used.
A locking groove 10 is provided on the inner surface of the outer peripheral frame portion 7 of the main frame body 4. While the stopper seat 12b of each bolt 12 is slidable along the engaging groove 10 with respect to the engaging groove 10,
In addition, it is fitted to the outside in a retaining shape. Specifically, at least the main frame 4 is formed by bending an extruded profile of an aluminum alloy having a constant length into an annular shape and welding both ends. Thus, the outer peripheral frame portion 7 of the main frame body 4 is formed with an inwardly extending locking groove 10 into which the stopper seats 12b of the bolts 12 are fitted in a continuous manner over the entire circumference.

Thus, at least one portion of the locking groove 10 is provided with an introducing portion 11 for guiding and fitting the stopper seat 12b of each bolt 12 into the locking groove 10 as shown in FIG.
Further, in order to temporarily fix each bolt 12 in a proper position on the locking groove 10, as shown in FIG.
A cylindrical nut 16 screwed to a is provided, and a base end 16a of the cylindrical nut 16 is abuttingly engaged with an opening edge of the locking groove 10 as shown in FIG.

The packing 6 in the figure is divided into four members. That is, on the inner surface of the outer peripheral frame portion 7 of the main frame body 4, first and second packing members 6a and 6b are annularly mounted inside and outside of the locking groove 10 and the sub-frame body 5 is formed. On the inner surface of the outer peripheral frame portion 8, the through hole 15 is sandwiched and a third
The fourth packing members 6c and 6d are bonded to each other in an annular shape, the outer peripheral edge portion of the transparent plate 3 is sandwiched between the first packing member 6a and the third packing member 6c, and the second packing member 6b and the fourth packing member 6c. The rim of the window 2 is held by the member 6d. Thus, the tubular nut 16 is formed of a vertically long plastic material or rubber material having an inner thread on the inner peripheral surface so that the outer peripheral edge of the transparent plate 3 can be received by the tubular nut 16 screwed to the screw shaft portion 12a.

[0009]

When the main frame 4 is made of an extruded profile of aluminum alloy, the engaging groove 10 having an inward expansion is formed over the entire circumference at the same time when the profile is molded. By only post-processing the introduction portion 11 in the locking groove 10, the desired number of the stopper seats 12b of the bolts 12 can be guided and fitted into the single locking groove 10 through the introduction portion 11. The locking groove 10 is formed in the shape of a dovetail groove that expands inward because the stop seat 12b of the bolt 12 is formed in the locking groove 10.
This is to prevent the bolt 12 from slipping out of the opening of the engaging groove 10 through the stop seat 12b while being slidable along the stop seat 12b. As far as this is possible, the stopper seat 12b of the bolt 12 is sufficient as long as it has a function to prevent rotation and a function to prevent slipping out.

After the stopper seat 12b of the bolt 12 is fitted into the locking groove 10 through the introduction portion 11, each bolt 12 is moved to the specified position along the locking groove 10. Next, the tubular nuts 16 are screwed into the screw shaft portions 12a of the bolts 12, and the tubular nuts 16 are tightened so that the base ends 16a of the tubular nuts 16 come into contact with the opening edges of the locking grooves 10. As a result, the stopper seat 12b floats and is received by the inner surface of the opening of the locking groove 10, and the bolts 12 are temporarily fixed to the relevant portions so as not to be unintentionally displaced. Before fitting the stopper seat 12b of the bolt 12 into the locking groove 10, the cylinder nut 16 may be previously screwed into the screw shaft portion 12a, and the cylinder nut 16 may be further screwed in at the time of temporary fixing. By this temporary fixing, the screw shaft portion 12a of each bolt 12
It will be in a planted state without wobbling and will be easily inserted into each through hole 15 of the sub frame 5 on the other side. After that, the nut 1 is attached to the tip of the screw shaft portion 12a from the outside of the sub-frame body 5 in the same manner as in the conventional case.
3 is screwed, and the main frame body 4 and the sub-frame body 5 are fastened with the bolts 12 and the nuts 13.

When the window frame A is attached to the window 2 of the wall plate 1, as shown in FIG.
Is removed to separate the main frame body 4 and the sub-frame body 5. Transparent plate 3
5 is temporarily placed on the main frame 4 side via the first packing member 6a as shown in FIG. 5, and the transparent plate is attached to the screw shaft portion 12a of the bolt 12 temporarily fixed to the outer peripheral frame portion 7 of the main frame 4. The outer peripheral edge of the transparent plate 3 is received via the cylindrical nut 16, and the positional deviation of the transparent plate 3 is regulated by this. Since the outer peripheral edge of the transparent plate 3 does not come into direct contact with the screw shaft portion 12a of the bolt 12 but is received by the cylindrical nut 16 made of plastic or rubber, the movement of the transparent plate 3 is regulated without any flaw. From this state, the inner surface of the outer peripheral frame portion 7 of the main frame body 4 is applied from the front side so that the second packing member 6b comes into contact with the rim portion of the window 2 of the wall plate 1. At this time, the wall plate 1 is not provided with a bolt insertion hole, and the screw shaft portion 12a of the bolt 12 passes near the edge of the window 2 and projects to the back side of the wall plate 1.

Next, as shown in FIG. 2, the outer peripheral frame portion 8 of the sub-frame body 5 is abutted against the rim portion of the window 2 of the wall plate 1 from the back side so that the fourth packing member 6d comes into contact with the bolts 12. The screw shaft portion 12a of the screw shaft portion
A nut 13 is screwed from the rear side of the outer peripheral frame portion 8 of the sub-frame body 5 to the protruding tip of 2a and tightened. As a result, the outer peripheral frame portions 7 and 8 of both the frame bodies 4 and 5 sandwich the edge portion of the window 2 from the inside and outside through the second and fourth packing members 6b and 6d, and at the same time, the outer peripheral frame portions 7 and 8 are formed. The outer peripheral edge portion of the transparent plate 3 is sandwiched between the first and third packing members 6a and 6c. Base stop 12b
Each bolt 12 in the locking groove 10 does not come off from the main frame body 4 no matter how strongly the nut 13 is strongly tightened, as long as the opening edge of the locking groove 10 is not deformed.

[0013]

According to the present invention, the outer peripheral frame portion 7 of the main frame body 4 is
About the bolt 12 to stand on the inner surface of the
The stopper seat 12b of the bolt 12 is slidable in the locking groove 10 of
However, since it is designed to be fitted in a retaining shape, the bolt stand-up work only needs to guide-fit the stop seat 12b into the locking groove 10, and anyone can perform it compared to the conventional welding work. good. Then, each bolt 12 in the locking groove 10
After sliding to the specified position, the tubular nut 16 can be temporarily fixed to the relevant position by simply screwing the tubular nut 16 into the screw shaft portion 12a.
Since it can be securely engaged with the guide, bolting work can be easily performed on site.

The main frame body 4 made of an extruded profile of an aluminum alloy can simultaneously form the locking groove 10 into an inwardly expanding shape at the time of molding the profile, and when the profile is bent into an annular shape, the main frame body is formed. The locking groove 10 is continuous with the outer peripheral frame portion 4 of 4 over the entire circumference. Therefore, no special processing is required to form the locking groove 10. Further, since the locking groove 10 is formed in a continuous annular shape, the number of the introducing portions 11 to be provided in the locking groove 10 is small, and also in this respect, it is possible to provide the processing easily and inexpensively. Moreover, as long as the stopper seat 12b of each bolt 12 is guided and fitted into the stopper groove 10 through the introduction portion 11 provided at the proper position of the stopper groove 10, the stopper seat 12b moves inside the stopper groove 10. Can be slidably displaced to a predetermined position along the circumferential direction of
Guide fitting of the stop seat 12b into the locking groove 10 is easy, and it is possible to reliably prevent the stop seat 12b from coming off from the locking groove 10.
As a result, even when the window frame A is attached to the front plate of the outdoor cubicle, the main frame body 4 and the sub frame body 5 can be strongly tightened with the bolts 12 and the nuts 13 so that rainwater does not enter.

When the main frame body 4 and the sub-frame body 5 are separated and attached to the window 2 of the wall plate 1, a bolt 12 is temporarily fixed to the inner surface side of the main frame body 4 through a tubular nut 16. Therefore, if the tubular nut 16 is formed of a vertically long plastic material or rubber material, the outer peripheral edge of the transparent plate 3 and the screw shaft portion 12a can be formed in a state where the transparent plate 3 is temporarily placed on the inner surface side of the main frame body 4. It can be directly received by the tubular nut 16 without any flaw, and the displacement of the transparent plate 3 can be well regulated.

[0016]

【Example】

(First Embodiment) FIGS. 1 to 6 show a first embodiment of a window frame according to the present invention. In FIG. 3, a target window frame A is provided with a window 2 on a wall plate 1 in front of a box of a cubicle installed outdoors, and the window 2 is attached to peep inside instruments. As shown in FIG. 1, the window frame A includes a transparent plate 3 made of a glass plate with a reinforcing net, a main frame body 4,
The sub-frame body 5 and the packing 6 interposed between the both frame bodies 4 and 5 are main constituent members. The transparent plate 3 may be formed of a transparent plastic material such as acrylic resin.

The pair of main frame 4 and sub-frame 5 are made of an extruded aluminum alloy material, which is cut into a certain length, each corner portion is bent into a circle, and both cut ends are welded together. Then, it is formed in a square ring shape. Both frames 4
・ 5 outer peripheral frame parts 7 and 8 have a specified width (25 mm in actual size)
Are formed to have substantially the same width, and an annular packing 6 is interposed between the outer peripheral frame portions 7 and 8.

In FIG. 1 and FIG. 4, an inwardly extending locking groove 10 is continuously formed on the inner surface of the outer peripheral frame portion 7 of the main frame body 4 at the central portion in the width direction. An introductory portion 11 communicating with the inside of the stop groove 10 is provided in a cutout shape at one location on the way. That is, since the main frame 4 is made of an extruded profile of aluminum alloy, when this profile is extruded into a plate shape, the locking groove 10 extends in the longitudinal direction thereof.
Are integrally molded at the same time. As a result, the locking groove 10 can be easily formed in an inwardly expanding dovetail groove shape, and after the main frame body 4 is formed in an annular shape, it can be formed in a circular shape. The introduction part 11 is shown in FIG.
As shown in FIG. 5, the locking groove 10 is formed in a proper place by post-processing.

1 to 3, the main frame body 4 and the sub-frame body 5 are fastened together by a plurality of (eight in the figure) bolts 12 and a nut 13 screwed thereto. Each bolt 12
As shown in FIG. 6, the stopper seat 12 is provided at the base end of the screw shaft portion 12a.
b is formed integrally, and the stop seat 12b can be guided and fitted into the locking groove 10 via the introduction portion 11. The stopper seat 12b of the bolt 12 is slidable in the locking groove 10 over the entire circumference thereof. However, while the stop seat 12b is made larger than the opening width of the locking groove 10 to prevent the stopper 12b from coming out, the stop seat 12b is formed into a rectangular plate shape in which the groove width direction of the locking groove 10 is short. The bolt 12 is prevented from rotating in the locking groove 10. That is, the seat 1
The width dimension of 2b in the lateral direction is larger than the opening width of the locking groove 10.

The sub-frame body 5 has a main frame body 4 as shown in FIG.
The same number of through holes 15 are formed at positions corresponding to the respective bolts 12 on the side. Further, the stopper seat 12b of the bolt 12 is free to move within a certain range in the locking groove 10, so that the bolt 12 can smoothly move even in a corner portion of the locking groove 10, that is, a corner portion of the main frame body 4. You can move.

In FIG. 1, the packing 6 is divided into four parts.
It is composed of individual packing members 6a to 6d. The first packing member 6a and the second packing member 6b are mounted inside and outside of the locking groove 10 on the inner surface of the outer peripheral frame portion 7 of the main frame body 4, respectively. Each of the first and second packing members 6a and 6b is made of a soft rubber material having excellent flexibility (compressibility) and cut along the outer peripheral frame portion 7 along the locking groove 10 after being cut into a certain length. Glue with adhesive so that both ends are abutted while bending in an annular shape. The first packing member 6a on the inner peripheral side is thin (the protruding height is low), and the second packing member 6b on the outer peripheral side is formed thick.

The through hole 1 is formed in the inner surface of the outer peripheral frame portion 8 of the sub-frame body 5.
The third packing member 6c and the fourth packing member 6d are attached to the inside and outside of the unit 5 with the member 5 sandwiched therebetween. The third and fourth packing members 6c and 6d are also cut into a certain length, and then bonded with an adhesive so that both ends are abutted while being bent in an annular shape along the outer peripheral frame portion 8. The third packing member 6c on the inner peripheral side is made of the same soft rubber material as the first packing member 6a, and is thin and highly flexible. The fourth packing member 6d on the outer peripheral side is made of a hard rubber material which is thicker than the third packing member 6c and harder than the other packing members 6a to 6c.

As shown in FIG. 6, a cylinder nut 16 is screwed into each screw shaft portion 12a of each bolt 12. The tubular nut 16 is formed of a plastic material such as nylon resin, and has an inner thread on the inner peripheral surface, and is formed in a vertically elongated cylindrical shape. When the tubular nut 16 is made of nylon resin, it has self-lubricating properties and is advantageous for screwing onto the screw shaft portion 12a.

As shown by the arrows in FIG. 4, the stopper bolts 12 of the eight bolts 12 are guided and fitted into the single locking groove 10 through the introduction portion 11 to lock the bolts 12. The slide guide is performed along the groove 10 to a predetermined arrangement position. After that, since the screw shaft portion 12a of each bolt 12 protrudes from the opening of the locking groove 10, the cylinder nut 16 is screwed into each screw shaft portion 12a, and the base end 16a of the cylinder nut 16 is locked by the locking groove 10. Tighten so as to straddle the opening and contact the edge of the opening. As a result, the stopper seat 12b floats up in the engagement groove 10, and the upper surface of the stopper seat 12b is received by the inner peripheral edge of the opening of the engagement groove 10, so that the bolts 12 are in an upright state without wobbling in a prescribed position. It is temporarily stopped.

If the transparent plate 3 is intended to be rounded so that its four corners are aligned with the main frame 4 and the sub-frame 5 (conventional form), the cutting work is troublesome. In particular, when it is desired to firmly bolt both frame members 4 and 5, it is desired to bolt both frame members 4 and 5 at each corner. At that time, it takes precision to finish each corner of the transparent plate 3 into a round shape,
This was also a problem in terms of production cost. Therefore, the corners of the transparent plate 3 are straightened (chamfered) as shown in FIGS. 4 and 5, so that the corners of the corners 3a are removed from the cylinder of the bolt 12 on the main frame body 4 side. Nut 16
I will try to accept it. According to this, the main frame 4
After temporarily fixing the bolt 12 to the first packing member 6a of the main frame body 4 by temporarily fixing the bolt 12 with the cylinder nut 16 in the above-described manner,
When mounting and placing the transparent plate 3 on the outer periphery of the transparent plate 3 and the bolts 12 on the outer periphery of the transparent plate 3 while providing a predetermined clearance, the center of the transparent plate 3 is correctly determined and the first packing is dropped. It can be mounted on the member 6a.

When the window frame A is transported or stored, the glass plate 3 is placed on the first packing member 6a on the inner surface of the outer peripheral frame portion 7 of the main frame body 4.
The cylinder nut 16 screwed onto each bolt 12 directly receives the outer peripheral edge of the transparent plate 3 and restricts the displacement movement of the transparent plate 3. In this state, the sub-frame body 5 is superposed on the main frame body 4, each bolt 12 is inserted into the through hole 15, and a washer 17 is attached to the tip of the screw shaft portion 12a protruding to the back side of the outer peripheral frame portion 8 of the sub-frame body 5. The nuts 13 are screwed together and lightly tightened to integrate all the constituent members so as not to separate them. At the construction site, prior to attaching the window frame A to the window 2 of the wall plate 1, the nut 13 is removed from the bolt 12 to separate the main frame body 4 and the sub frame body 5 again. The bolt 12 and the first and second packing members 6a and 6b are previously attached to the separated main frame body 4 in the above-described manner, and the sub frame body 5
Also, since the third and fourth packing members 6c and 6d are mounted in advance, the constituent members do not become apart except the removed nut 13, which is convenient for handling.

When the window frame A is attached to the window 2 of the wall plate 1, the transparent plate 3 is placed on the first packing member 6a of the main frame body 4.
First, from the front side of the wall plate 1 with the main frame 4
The inner surface on the rear surface side of the outer peripheral frame portion 7 is abutted against the rim portion of the window 2 so that the second packing member 6b comes into contact. At this time, each bolt 12 passes through near the edge of the window 2 in the window 2, and the shaft portion 12b of each bolt 12 projects to the back side of the wall plate 1. Next, from the back side of the wall plate 1, the front side inner surface of the outer peripheral frame portion 8 of the sub-frame body 5 is brought into contact with the rim portion of the window 2 so that the fourth packing member 6d comes into contact, and the main frame body is aligned. The screw shaft portions 12a of the bolts 12 on the four side are inserted into the corresponding through holes 15 on the side of the sub-frame body 5, respectively, and the tips of the screw shaft portions 12a protruding to the back side of the outer peripheral frame portion 8 of the sub-frame body 5 are inserted. To the nut 13
Screw them together and tighten them in order.

Particularly in a cubicle installed outdoors, the main frame 4 and the sub-frame 5 are connected by the bolts 12 and the nuts 13 not only to prevent the window frame A from coming off but also to prevent rainwater from entering. It is necessary to conclude strongly. However, when fastening both frame bodies 4 and 5 with the bolt 12 and the nut 13,
The hard fourth packing member 6d is compressed and deformed and joined to the soft and thick second packing member 6b. When the fourth packing member 6d completely compresses the second packing member 6b by sandwiching the rim of the window 2, since this can be seen by the response when the nut 13 is screwed, the fastening condition is adjusted at this stage. It is possible to avoid tightening too strongly so that the fastening portions of the frame bodies 4 and 5 are deformed, and a neat mounting state can be obtained. At this time, the first packing member 6a and the third packing member 6c directly sandwich and hold the outer peripheral edge of the transparent plate 3 over the entire circumference.

At the time of mounting the window frame A, the transparent plate 3 temporarily mounted on the main frame 4 side tends to move downward by a slight amount of the interchange gap, but at this time, the lower edge side of the transparent plate 3 is It is received by a cylinder nut 16 attached to the bolt 12.
Therefore, even if the transparent plate 3 shifts vertically and horizontally due to backlash when bolting the sub-frame body 5 to the main frame body 4, the outer peripheral edge and the screw shaft portion 12a side are flawed.
It can absorb shocks and prevent them well.

When the window frame A is attached to the window 2 of the window plate 1, both outer peripheral frame portions 7 and 8 of the main frame body 4 and the sub frame body 5 are attached to the second packing member 6b and the fourth packing member 6b as shown in FIG. The rim of the window 2 is sandwiched by the packing member 6d. Especially, since the outer peripheral frame portion 7 of the outer main frame body 4 is tightly joined to the outside of the rim portion of the window 2 through the soft and thick second packing member 6b, it is possible to prevent rainwater from entering the inside from the relevant portion. Can be well prevented. Moreover, since the locking groove 10 is formed on the inner surface of the outer peripheral frame portion 7 of the main frame body 4 and is not formed to penetrate through the outer peripheral frame portion 7, the bolt 12 is not inserted from the outer side of the outer peripheral frame portion 7. In this respect as well, the bolt head is not visible from the outside and has a neat appearance, and is also advantageous in preventing rainwater from entering. Furthermore, the bolt 12 is the window 2
Since it is a type that passes through the inside, it is possible to omit the labor for forming a bolt insertion hole in the wall plate 1 at the rim of the window 2, and the workability at the site is good.

(Second Embodiment) FIGS. 7 and 8 show a second embodiment of the window frame A according to the present invention, in which case the packing 6 is composed of three members. Of these, the first packing member 6
The e is formed into an annular shape by cutting both ends to a certain length and then adhering both ends to each other and appropriately adhering to each other. The e is formed in a U-shaped cross section having the circumferential groove 20 on the inner peripheral side, and is excellent in flexibility (compressibility). Made of soft rubber material. This first packing member 6e
Is fitted to the outer peripheral edge of the transparent plate 3 from one end side, and is fitted to the transparent plate 3 in the above-described manner, and then the locking groove 10 is formed on the inner surface of the outer peripheral frame portion 7 of the main frame body 4 on the rear surface side. Temporarily bond with an adhesive to a portion closer to the inner peripheral side. Then, the main frame 4 is provided with the second packing member 6b, and the sub frame 5 is provided with the fourth packing member 6d.
Respectively, with substantially the same specifications as in the first embodiment,
The other structure is similar to that of the first embodiment. The packing members 6e, 6b, 6d may be integrally formed by a single member.

In addition, the main frame 4 and the sub-frame 5 may be made of metal, for example, stainless steel. The locking groove 10 to be formed in the main frame body 4 does not necessarily need to be continuous in a circular shape as shown in the drawing, and even if the arrangement position of the bolt 12 is limited and it is formed in a groove shape of a constant length. Alternatively, the introduction portion 11 may be opened on the inner peripheral side of the outer peripheral frame portion 7 of the main frame body 4. Even when the locking groove 10 is formed in a circular shape,
The above-mentioned introducing portion 11 may be provided, for example, at each side, that is, at four locations. The main frame 4 and the sub-frame 5 are annular,
It is a concept that includes all rectangles, circles, and ellipses.

The tubular nut 16 may be formed of a soft plastic material or a rubber material so as to further improve the function of absorbing and absorbing the impact on the transparent plate 3. In these cases, the tubular nut 16 is the screw shaft of the bolt 12. Since it can be screwed by fitting into the portion 12a and rotating, the inner screw does not have to be preliminarily engraved on the inner peripheral surface.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional side view showing an essential part of a window frame in an exploded state.

FIG. 2 is a sectional view taken along line BB in FIG.

FIG. 3 is a front view of the window frame in an attached state.

FIG. 4 is a rear view of the main frame.

FIG. 5 is a rear view of the main part of the main frame.

FIG. 6 is a front view showing a bolt and a cylinder nut.

FIG. 7 is a vertical sectional side view showing an essential part of a window frame in a second embodiment in an exploded state.

FIG. 8 is a vertical cross-sectional side view of essential parts showing a mounted state of a window frame in the second embodiment.

[Explanation of symbols]

 A window frame 1 wall plate 2 window 3 transparent plate 4 main frame body 5 sub-frame body 6 packing 6a first packing member 6b second packing member 6c third packing member 6d fourth packing member 7 outer peripheral frame portion 8 of the main frame body Outer peripheral frame portion of the sub-frame body 10 Locking groove 11 Introductory portion 12 Bolt 12a Screw shaft portion 12b Stopper 13 Nut 15 Through hole 16 Cylindrical nut 16a Base end of tubular nut

Claims (4)

[Claims] 1. A window frame for mounting a transparent plate 3 to a window 2 provided on a wall plate 1, wherein a pair of main frame body 4 and sub frame body 5 arranged inside and outside the window 2 of the wall board 1 are provided. And each of the main frame 4 and the sub-frame 5 is made of metal,
The outer peripheral frame parts 7 and 8 are formed in an annular shape having a predetermined width, and have an annular packing 6 interposed between the outer peripheral frame parts 7 and 8 of the main frame body 4 and the sub frame body 5, On the inner surface of the outer peripheral frame portion 7 of the main frame body 4, there are provided a plurality of bolts 12 arranged at appropriate intervals in the circumferential direction. Each bolt 12 has a stopper seat 12b integrally formed at the base end of the screw shaft portion 12a. The engaging groove 10 is formed on the inner surface of the outer peripheral frame portion 7 of the main frame body 4, and the stopper seat 12b of each bolt 12 is slid along the engaging groove 10 along the engaging groove 10. It is movably, but non-rotatably and outwardly fitted, and is screwed to the screw shaft portion 12a of each bolt 12 to form a base end 16a.
Is provided with a cylindrical nut 16 that contacts the opening edge of the locking groove 10, and the sub-frame body 5 is provided with through holes 15 through which the screw shaft portions 12a of the bolts 12 pass, respectively. By screwing the nut 13 from the back side of the bolt 5 to the tip of the screw shaft portion 12a of each bolt 12, the outer peripheral frame portions 7 and 8 of the main frame body 4 and the sub frame body 5 are connected to the opening of the window 2 of the wall plate 1. A window frame in which the edge portion is sandwiched from the inside and outside directions via the packing 6, and the outer peripheral edge of the transparent plate 3 is sandwiched between the outer peripheral frame portions 7 and 8 via the packing 6. 2. The main frame body 4 is formed by bending an extruded profile of an aluminum alloy of a certain length into an annular shape and welding both ends to each other. The inner frame is locked to the outer peripheral frame portion 7 of the main frame body 4. The groove 10 is formed continuously over the entire circumference, and the introduction portion 1 for guiding and fitting the stopper seat 12b of each bolt 12 into at least one position of the locking groove 10 in the locking groove 10.
The window frame according to claim 1, wherein 1 is provided. 3. The inner and outer surfaces of the outer peripheral frame portion 7 of the main frame body 4 have first and second packing members 6a and 6b annularly attached to the inside and outside of the engagement groove 10, respectively. On the inner surface of the outer peripheral frame portion 8 of the frame body 5, third and fourth packing members 6c and 6d are annularly adhered to the inside and outside of the bolt 12 with the bolt 12 sandwiched between the first packing member 6a and the third packing member. The window frame according to claim 1, wherein an outer peripheral edge portion of the transparent plate 3 is held by the member 6c, and an edge portion of the window 2 is held by the second packing member 6b and the fourth packing member 6d. 4. The cylindrical nut 16 is formed of a vertically long plastic material or rubber material having an inner thread on its inner peripheral surface, and the outer peripheral edge of the transparent plate 3 is screwed onto the screw shaft portion 12a of the bolt 12. The window frame according to claim 3, which is received by the tubular nut 16.