JPH0213683A - Spring device for opening window - Google Patents

Abstract

PURPOSE:To prevent a window from fluttering at the time of gust by inserting a push-out shaft with a play, which is movably connected with a compression spring within a spring case, and thereby arranging a shock absorbing device between the compression spring and the push-out shaft. CONSTITUTION:A shock absorbing device 20 is formed with a tapered opening 37 which is opened outward while being tilted by plural sliding pieces 36, and is also provided with a brake piece 33 which moves each sliding piece 36 in the radial direction of the opening of a case 22, and with a braking 34 which is inserted with a play into the opening 37 in a tapered outer form corresponding to the inner surface of the opening. In addition, a tension spring 35 is arranged between the brake piece 33 and the braking 34. And when the spring is subjected to pressing force equal to or more than a specified value, it is deflected so as to let one end of the braking 34 and furthermore the brake piece 33 be advanced into the opening 37 so that the plural sliding pieces 36 and 36 are expanded while being moved so as to be slidably brought in contact with the inner wall surface of the spring case 22.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spring device for opening a window, and more particularly to a spring device for opening a window that is suitable for a ventilation window for a smoke-exhaust hall and prevents the window from flapping during gusts of wind.

[Prior art] Window opening spring devices used for smoke exhaust/ventilation windows are as follows:
Generally, as shown in Fig. 10, a pair of spring devices 3.3 are installed between the frame l and a smoke exhaust window sash 2 whose upper edge is attached and protrudes outward to allow the window to be opened. A wire 5 is wound around a plurality of guide rollers 4 attached to a window shoji 2 and a winding box 6 is wound around the wire 5.
This is connected to the handle 7.

To open a window (during smoke exhaust or ventilation), operate the release pushbutton 8 of the winding box 6 to unlock the winding drum (not shown) inside the winding box 6, and open the winding drum to the window shoji 2. While pulling the wire 5 fed out from the wire 5, it is slowly opened by the resistance of the wire 5 and the braking force of the winding box 6.

In addition, the window can be closed by pressing the lisseto button 9 provided on the winding box 6 and operating the winding handle 7 to wind the wire 5 onto the al[sI re-drum. This keeps the window closed.

The spring device 3 used in such a smoke exhaust/ventilation window device is called a stay damper or the like as shown in Fig. 11, and a compression spring 11 is housed in a spring case O. , the extrusion force against the extrusion shaft 12 is obtained by utilizing the repulsive force. The frame 1 and the window shoji 2 are fixed by an angle 14 attached to the base end 13 of the spring case 10 and the extrusion shaft 12.

In this conventional spring device 3, when the window is opened,
The pushing force in the window closing direction and the pulling force in the window opening direction caused by the wind blowing the window shoji 2 are countered only by the repulsive force of the compression spring 11, and the impact force caused by the wind is absorbed. It was like that.

[Problems to be Solved by the Invention] However, the conventional spring device 3 described above cannot cope with a sudden compression state caused by a gust of wind.
Since the wind pressure cannot be absorbed by the compression spring 11, a condition called so-called window flapping is caused, which causes problems such as breakage of the wire 5 due to impact and glass breakage of the window sash.

[Means for Solving the Problems] A spring device for opening a window according to the present invention has been made in view of the above-mentioned conventional problems. The present invention is characterized in that a shock absorber which moves forward and backward together with the extrusion shaft is interposed between the L compression spring and the extrusion shaft.

The shock absorbing device includes a plurality of sliding pieces that form a tapered opening that opens and slopes outward, and each sliding piece is movable in the radial direction of the opening of the spring case; a brake ring having a tapered outer surface shape corresponding to the inner wall surface of the opening, one end of which is loosely inserted into the opening of the brake piece, and the other end of which is brought into contact with a step provided on the extruded shaft; It is interposed between the brake piece and the brake ring, and when it receives a pressing force of more than a predetermined value from the brake ring, it bends and causes one end of the brake ring to further enter the opening of the brake piece, thereby causing the plurality of sliding pieces to and a tension spring for setting the braking force which is expanded and moved to slide into contact with the inner wall surface of the spring case.

The shock absorber also includes a brake piece having a tapered opening that opens outward and is attached to the open end of the spring case, and a plurality of sliding pieces that correspond to the inner wall surface of the opening of the brake piece. a brake ring formed with a tapered outer surface shape, placed in the opening of the above-mentioned brake piece, and having its other end abutted against a stepped portion provided on the above-mentioned extruded shaft; interposed between the brake ring and the brake ring at a predetermined distance from the brake ring.
A braking force that causes the brake ring to bend and further advance into the opening of the brake piece when subjected to a pressing force, and causes the plurality of sliding pieces to spread out and slide into contact with the inner wall surface of the brake piece. It may also consist of a tension spring for setting.

The extrusion shaft is connected to the compression spring via a fixing fitting attached to the compression spring, and the fixing fitting is provided with a protrusion that guides the movement of the sliding piece, and the sliding piece is provided with a long hole into which the protrusion is inserted. It may also be provided.

Further, the inner surface of the opening of the brake piece and the outer shape of the brake ring may be truncated conical.

Furthermore, the compression spring may be a plurality of pieces, or the tension spring may be a spherical leaf spring.

[Example] An example of unreleased IJ+ will be described below with reference to the drawings. In addition, below, the common reference numerals are given to the part which is common with the conventional art, and the overlapping explanation will be omitted.

1 to 6 show one embodiment of the present invention, and 3
Spring case 2 containing a book compression spring 21
An extrusion shaft 23 is inserted into the spring 2, and the compression spring 21 and the extrusion shaft 23 are connected via a shock absorber 20. The push shaft 23 is urged by the compression spring 21 so as to extend outward.

In addition, if there are multiple compression springs, the difference in spring force during compression and extension will be smaller than in the case of negative springs, and the force required at maximum compression will be less to obtain the required opening force during extension, which will improve the structure. It can be done reasonably well.

The spring case 22 has a flat rectangular cylindrical shape, and has a rectangular bottom plate 26 with a piece 25 at its end for attachment to the frame l, and a lid of the same shape with an opening 27 through which the extrusion shaft 23 is inserted. The plate 28 is attached and formed. The hole 25a for mounting the piece 25 on the bottom plate 26 is eccentric by a distance A from the axis Z of the spring case 22, as shown in FIG.

The extrusion shaft 23 is connected to the spring 21 by screwing a threaded portion 29 at the tip into a threaded hole 31 of a fixture 30 that also serves as a spring receiver, and the vertical dimension H (
(Fig. 5), the protruding dimension from the spring case 22 can be finely adjusted or replaced. Further, the ring portion 32 on the other end side is attached to the window sash 2. This extruded shaft 23 has substantially the same shape as the conventional one, but has a stepped portion 23a formed slightly apart from the threaded portion 29 inserted into the spring case 20.

Installation to the frame l and window shoji 2 is as shown in Figure 5.
To install the spring case 22, attach the piece 25 to the vertical frame 1a of the frame 1.
The ring portions 32 of the extruded shafts 23 are rotatably attached to the vertical bars 2a of the window shoji 2 using screws, etc., and the window shoji 2 provided near the upper frame 1b of the frame 1 is mounted around point C. The extruded window shoji 2 can be rotated to open and close.

In general, in this type of window device, the pushing force of the pushing shaft 23 required to open the window shoji 2 is due to not only the own weight of the window shoji 2, but also the attachment of the spring device to the frame l between point B and the frame l of the window shoji 2. The attachment is determined by the horizontal pressure #X between point C. In this embodiment, the water distance x is
The mounting is done by making the hole 25a eccentric so as to enlarge it and reduce the required extrusion force.

The shock absorber 20 includes a brake piece 33 and a brake ring 3.
4 and a tension spring 35.

The brake piece 33 consists of a pair of sliding pieces 36 and 36,
The recess provided in the sliding piece 36 forms a tapered truncated conical opening 37 that opens and slopes toward the open end side of the spring case 22, that is, toward the cover plate 28 side. Each sliding piece 36
are each provided with a long hole 38, into which a protrusion 39 provided on the fixture 30 is fitted, allowing the sliding piece 36 to move in the direction perpendicular to the axis Z, that is, in the radial direction of the spring case 22. ! It is maintained for hours.

The brake ring 34 consists of a body part 40 having a frustoconical outer surface shape corresponding to the opening 37 of the brake piece 33, and a flange part 41 provided on the large diameter end side of the adjustment part 40. A hole 42 is formed through which the extrusion shaft 23 is inserted. The body portion 40 has an end on the small diameter side connected to the brake piece 3.
It is loosely inserted into the opening 37 of No. 3. The hole 42 has a larger diameter than the portion between the threaded portion 29 of the extrusion shaft 23 and the subsequent step portion 23a. Therefore, when the extruded shaft 23 is attached to the spring case 22, the step m23a of the extruded shaft 23 and the flange 4 of the brake ring 34 come into contact with each other.

The tension spring 35 has a spherical outer shape, and the brake ring 34 is located in the iQ-shaped opening 43 in the center.
The body part 40 of the brake ring 34 is loosely inserted and interposed between the brake piece 33 and the brake ring 34, and comes into contact with the flange part 41 of the brake ring 34 to attach the brake ring 34 to the 428 side of the spring case 22. are doing. The spring constant of this tension spring may be determined as appropriate, but when slowly closing the window shoji 2, it is necessary to balance the pressing force by the flange 41 of the extruding shaft 23 without bending, along with the frictional force of the brake ring, and push out the The shaft 23 is set so as to be bent when it is suddenly retracted into the spring case 22 and receives a strong pressing force by strongly pressing the flange 41 of the brake ring 34 so that the stepped portion 23a thereof is bent. Note that the tension spring is not limited to the shape shown in the figure, and may be a helical spring, for example, but if it is shaped like the one shown in the figure, the spring that biases the brake ring It is possible to make the force and the pressing force received from the flange of the brake ring uniform.

Also in the window using the spring device according to this example,
The opening/closing operation is performed in the same manner as before, but under conditions where a gust of wind blows during a 3H window and the window shoji 2 would flap in the conventional case, the following operating state of the spring device occurs.

That is, when the window shoji 2 is pushed in the window closing direction by wind or the like, and the pushing shaft 23 suddenly operates to withdraw into the spring case 22, the stepped portion 23a of the pushing shaft 23
strongly presses the flange 41 of the brake ring 34, and as a result, a pressing force of more than a predetermined value is applied to the tension spring 35 via the brake ring 34, the tension spring is bent, and the brake ring 34 is pushed against the brake piece 33.
into the opening 37 of. Then brake ring 3
The sliding pieces 36 of the brake pieces 33 are expanded by the sliding contact with the body portion 40 of the spring case 22, and move to come into sliding contact with the inner wall surface of the spring case 22. The return force of the pushing shaft 23 is absorbed by the frictional force generated by the sliding contact between the sliding piece 36 and the spring case 22, and the window shoji 2 slowly closes.

Next, a second embodiment of the present invention will be described with reference to FIGS. 7 to 9. Hereinafter, common reference numerals will be given to parts common to the prior art and parts common to the previous embodiment, and redundant explanation will be omitted.

The shock absorber 50 of this example consists of a brake piece 51, a brake ring 52, and a tension spring 35 common to the previous embodiment.

The brake piece 51 is fixed to the back side of the cover plate 28 of the spring case 22, and has a tapered opening 54 in the shape of a truncated cone that is slanted outward.

The brake ring 52 consists of a pair of sliding pieces 55.55. This pair of sliding pieces 55.55.

A body 56 each having a semi-truncated conical external shape, which together have a truncated conical external shape corresponding to the opening 54 of the brake piece 51; and flanges 57.5 at both ends of the body 56.
8 and a hole 59 for inserting the extrusion shaft 23 along the axis. The adjustment portion 56 has an end portion on the small diameter side that is loosely inserted into the opening 54 of the brake piece 51. The near L59 has a larger diameter than the extrusion shaft 23, but the narrow end of the hole 59 has approximately the same diameter as the extrusion shaft 23. For this reason, the extrusion shaft 23
When attached to the spring case 22, the extruded shaft 23 comes into sliding contact with the inner wall surface of the small diameter end of the brake ring 52.

The tension spring 35 has an opening II 4 provided in the center.
3, the body 56 of the brake ring 52 is loosely inserted between the spring case 22 mount 28 and the brake ring 52, and comes into contact with the flange 57 of the brake ring 52 to push the brake ring 52 outward. It is urging towards. In addition, 60 in the figure is a C ring, which serves as a stopper for the brake ring 52 to come off.

Also in the window using the spring device according to this example,
The opening/closing operation of the window shoji 2 is similar to the previous example, even if a gust of wind blows, the sudden return force of the push-out shaft 23 is prevented. It is absorbed by vibration and is made slowly.

That is, when the window shoji 2 is pushed in the window closing direction by wind or the like, and the pushing shaft 23 suddenly operates to withdraw into the spring case 22, friction between the pushing shaft 23 and the inner wall of the brake ring 52 on the narrow diameter side occurs. When a pressing force of a predetermined value or more is applied to the tension spring 35 via the brake ring 52, the tension spring 35 is bent and the brake ring 52 is pushed into the opening 54 of the brake piece 51. Then, the body portion 56 of the brake ring 52 comes into strong sliding contact with the inner wall surface of the brake piece 51. The return force of the pushing shaft 23 is absorbed by the frictional force generated by the sliding contact between the brake ring 52 and the brake piece 51, and the window sash 2 slowly closes.

[Effects of the Invention] The window opening spring device according to the present invention is as described above.
As shown above, a spring device for opening a window is installed between a window sash and a frame by connecting a compression spring inside a spring case with an extrusion shaft inserted through an opening at the end of the spring case so as to be able to move forward and backward. In this case, a shock absorber that is loosely inserted into the extrusion shaft and moves back and forth together with the extrusion shaft is interposed between the compression spring L and the extrusion shaft, or the opening of the spring case 1-
Since it is interposed at one end, even when a gust of wind blows when the window is opened and the window shoji would flap under conventional conditions, there is no sliding contact between the brake piece and the inner wall of the case, or between the brake piece and the brake ring. The frictional force generated by the sliding contact absorbs the return force of the extrusion shaft and allows the window shoji to slowly close, eliminating the problems of conventional methods such as flapping and glass breakage.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view showing the first embodiment of the present invention, Fig. 2 is a partially enlarged sectional view showing the operation of the shock absorber in a state where the extrusion shaft is not making sudden movements, Fig. 3 4 is a partially enlarged cross-sectional view showing the operation of the shock absorber in a state where the extrusion shaft suddenly moves. FIG. 4 is a sectional view of the assembled state of the embodiment of FIG. 6 is a sectional view showing the state in which the extrusion shaft is attached to the spring case; FIG. 7 is an exploded perspective view showing the second embodiment of the present invention; FIG. 8 is an exploded perspective view showing the second embodiment of the present invention. , FIG. 9 is a partially enlarged sectional view corresponding to FIG. 2 of the example in FIG. 7, FIG. 9 is a partially enlarged sectional view corresponding to FIG. 3 in the example in FIG. 7, and FIG. FIG. 11 is a perspective view and a sectional view of a conventional spring device. l: frame 2: window shoji 20.50: shock absorber 21: compression spring 22 spring case 23: extruded shaft 25: installation piece 28: lid plate
30: Fixed metal fittings 33.51 Nibrake piece 34.52 Nibrake ring 35: Tension spring 36.55: Sliding piece 37.54: Opening 38: Long hole
39: Protrusion 60: C-ring A: Eccentric distance

Claims (2)

[Claims] (1) In a window opening spring device installed between a window sash and a frame, the spring device for opening a window is configured by connecting a compression spring in a spring case to an extrusion shaft inserted through an end opening of the spring case so that the extrusion shaft can advance and retreat. A shock absorber that is loosely inserted into the shaft and moves forward and backward together with the push-out shaft is interposed between the compression spring and the push-out shaft, and the shock absorber has a tapered shape that opens and slopes outward by a plurality of sliding pieces. a brake piece that forms an opening and each sliding piece is movable in the radial direction of the opening of the spring case; and a brake piece that has a tapered outer surface shape that corresponds to the inner wall surface of the opening of the brake piece, and one end of which is connected to the opening of the brake piece. a brake ring that is loosely inserted into the interior and has its other end abutted against a step provided on the extruded shaft; and a brake ring that is interposed between the brake piece and the brake ring and that applies a pressing force of a predetermined value or more from the brake ring. and a tension spring for setting a brake force that bends when received and causes one end of the brake ring to further advance into the opening of the brake piece, causing the plurality of sliding pieces to expand and come into sliding contact with the inner wall surface of the spring case. A window opening spring device characterized by: (2) In a window opening spring device installed between a window sash and a frame, the spring device for opening a window is configured by connecting a compression spring in a spring case with an extrusion shaft inserted through an end opening of the spring case so that the extrusion shaft can advance and retreat. A shock absorber having a shaft loosely inserted therein is interposed at the open end of the spring case, and the shock absorber includes a brake piece having a tapered opening that opens outward and is attached to the open end of the spring case. and a plurality of sliding pieces form a tapered outer surface shape corresponding to the inner wall surface of the opening of the brake piece, and are loosely inserted into the opening of the brake piece, and the inner wall surface of the sliding piece slides into contact with the extruded shaft. A brake ring is interposed between the brake piece and the brake ring, and when receiving a pressing force of a predetermined value or more from the brake ring, the brake ring is bent to further advance the brake ring into the opening of the brake piece, and the plurality of brake rings are bent. 1. A spring device for opening a window, comprising a tension spring for setting a braking force that causes a sliding piece to spread out and come into sliding contact with an inner wall surface of the opening of the brake piece.