JPH0417277B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention provides a counterbalance mechanism in which at least a glass door located on the indoor side is movable up and down and can be stopped at an arbitrary vertical height position. This applies to windows that can be raised and lowered.

More specifically, the present invention relates to a vertically movable indoor glass door that can be folded inward for cleaning.

[Conventional technology]

As a conventional technology that combines this type of counterbalance mechanism and inward tilting mechanism,
There is one shown in Publication No. 13575.

As shown in FIG. 10, a slider 40 is mounted in vertical grooves 5 formed in the left and right vertical frames 4 of the sash 1 so as to be able to move only up and down. Connect to. A support shaft 12 is fixed to the left and right sides of the lower end of the glass door 2 located on the indoor side, and the free end of the support shaft 12 is rotatably connected to the slider 40. According to this, the glass door 2 moves up and down via the slider 40 sliding in the vertical groove 5, and the support shaft 12
A glass door 2 can be folded inward around the area.

[Problem that the invention seeks to solve]

However, such a counterbalance mechanism 7 requires a helical spring 11, which will be described later, as shown in FIG. 4, and it is necessary to apply and adjust initial spring pressure on site according to the weight of the glass door 2. However,
In the prior art example mentioned above, there is no mention of how to set this spring pressure adjustment mechanism. Also, if the spring force decreases over time, it will be necessary to readjust it, but it is assumed that in this case as well, the glass door 2 will have to be removed.

Furthermore, in the conventional example, the support shaft 12 and the slider 40 are separate bodies, and both 12 and 40 must be rotatably connected, which increases the number of parts and makes assembly work difficult. The structure of the pivot point was complicated, making it prone to problems such as poor rotation.

[Purpose of the invention]

The present invention has been proposed to solve the drawbacks of such conventional examples.

An object of the present invention is to obtain a lift-down window with a simple structure in which the glass door can be moved up and down and folded inwards.

SUMMARY OF THE INVENTION An object of the present invention is to provide a lifting window that allows easy adjustment of the spring pressure of a counterbalance mechanism.

An object of the present invention is to obtain a lift/lower window in which the glass door can be smoothly tilted and rotated over a long period of time without failure.

[Means for solving problems]

The present invention is based on the premise that at least the glass door 2 located on the indoor side is a vertically movable window and can be folded inwards.

In the present invention, the slider portion 13 is integrally formed on the tip side of the support shaft 12 provided on the left and right sides of the lower end of the glass door 2.

The slider portion 13 is vertically movable within vertical grooves 5 formed in the left and right vertical frames 4 of the sash 1, and is rotatable around a horizontal axis.

A spring pressure adjustment mechanism 16 is incorporated into the slider portion 13, and a relief groove 15 is formed in the upper wall portion of the slider portion 13 in a penetrating shape. The spring pressure adjustment mechanism 16 includes a rotary operating tool 17 and means for preventing the rotating operating tool 17 from being reversed.

A counterbalance mechanism 7 as shown in FIG. 4 is provided, and the lower end of the screw plate 9 and the rotary operating tool 17 are connected via a relief groove 15. Note that the counterbalance mechanism 7 itself includes conventionally known ones and improved versions thereof.

More specifically, the slider section 13 is formed into a cylindrical shape with an open bottom surface, and the rotation operating tool 17 is built into the slider section 13, so that the rotation operating tool 17 can be rotated from the open bottom surface side of the slider section 13. Make it so.

[Effect]

The tip slider portions 13 of the support shafts 12 provided on the left and right sides of the lower end of the glass door 2 are located in the left and right vertical grooves 5 on the sash 1 side, and are prevented from making excessive movement in the front-back and left-right directions. However, it is slidable vertically and rotatable around a horizontal axis.
Therefore, the glass door 2 is vertically movable via the counterbalance mechanism 7, can be stopped at any height position, and can be smoothly tilted inward via the support shaft 12.

When the glass door 2 falls inwards, the escape groove 15
The screw plate 9 and the rotary operating tool 17 remain fixedly located through the screw plate 9, and only the slider portion 13, ie, the support shaft 12, rotates freely, and the glass door 2 tilts without any hindrance.

When adjusting the spring pressure of the counterbalance mechanism 7, the rotary operating tool 17 is moved to the slider portion 13, for example.
The threaded plate 9 is rotated around the vertical axis, and the nut member 10 is then rotated in the horizontal plane, thereby tightening the helical spring 11 connected to the nut member 10.

〔Effect of the invention〕

According to the present invention as described above, the lower end of the screw plate 9 of the counterbalance mechanism 7 is connected to the slider portion 13 via the spring pressure adjustment mechanism 16. Therefore, the helical spring 11 of the counterbalance mechanism 7 can be tightened by rotating the screw plate 9 from the lower opening side of the slider portion 13 via the rotation operating tool 17 of the spring pressure adjustment mechanism 16. , the spring pressure can be adjusted extremely easily depending on the weight of the glass door 2.

The slider part 13 is movable up and down within the vertical groove 5 of the sash 1, and is also rotatable around a horizontal axis, and has a relief groove 15 in its upper wall.
Rotary operating tool 17 of spring pressure adjustment mechanism 16 and screw plate 9
and the lower end of the groove 15 were connected to each other via the relief groove 15. Therefore, the counterbalance mechanism 7 and the spring pressure adjustment mechanism 16 are in a fixed position state, and only the slider portion 13 can freely rotate within the vertical groove 5 without any hindrance. Since this slider portion 13 is integrally formed on the tip side of the support shaft 12 fixed to the left and right sides of the lower end of the glass door 2, the glass door 2 can be tilted inward smoothly at any vertical position.

Moreover, since the support shaft 12 and the slider section 13 are integrated, unlike the conventional configuration in which the two are formed separately and pivotally supported, the number of members is small and the structure can be simplified. , 13 is no longer required, which improves the assembly workability and ensures a smooth, trouble-free folding function over a long period of time.

〔Example〕

FIGS. 1 to 9 show specific examples of the raising/lowering window according to the present invention.

Basic configuration of a hanging window In Figures 1 to 3, the hanging window in question is an inner and outer glass door 2 that fits into a sash 1,
It has 3. Of these, the glass door 3 on the outdoor side is fixed to the upper half of the sash 1. The glass door 2 on the indoor side is attached to the left and right vertical frames 4, 4 of the sash 1.
It is movable up and down along the vertical grooves 5, 5 formed in the vertical grooves 5, and can be folded inward towards the indoor side.

Counterbalance Mechanism Each vertical groove 5 is provided with a counterbalance mechanism 7 for stopping the glass door 2 at an arbitrary vertical height position.

In FIG. 4, the counterbalance mechanism 7 consists of a vertically long rectangular cylindrical pipe 8 made of synthetic resin, a threaded plate 9 with a large lead angle formed by gently twisting a band plate, a nut member 10, and a coiled band plate. It consists of a spiral spring 11 wound in a shape. The upper end of the pipe 8 is fixed to the upper part of the vertical groove 5. The threaded plate 9 is inserted into the pipe 8 so as to be able to move up and down, and the lower end of the threaded plate 9 projects outside the pipe. The nut member 10 is disposed at the lower end of the pipe 8 and rotates while being screwed into the threaded plate 9. The helical spring 11 is located inside the pipe 8 and is attached to the outer periphery of the threaded plate 9. Its upper end is connected to the upper part of the pipe 8, and its lower end is connected to a nut member 10, which is tightened by the rotation of the nut member 10. It will be done.

Support shaft of glass door In FIG. 5 to FIG.
Fix a respectively. A slider portion 13 is integrally formed at the tip of each support shaft 12 and extends horizontally toward the outside of the glass door 2 .

The slider portion 13 is formed into a substantially semi-cylindrical shape with an open bottom surface, and is guided and fitted into the longitudinal groove 5 of the sash 1 from inside. In this vertical groove 5, the slider part 13 is dimensioned so that it is prevented from moving more than necessary in the front-rear direction and left-right direction, and is slidable in the vertical direction but around the horizontal axis. is rotatable.

A relief groove 15 extending in the circumferential direction is formed through the upper wall of the slider portion 13 . The front end of this relief groove 15 is located at a position slightly offset counterclockwise from the vertical line passing through the center of the slider portion 13, and the rear end is located at a position offset clockwise from the vertical line by an angle slightly larger than 90 degrees. In other words, it is located at a position slightly offset clockwise from the horizontal line passing through the center of the shaft.

Spring Pressure Adjustment Mechanism The counterbalance mechanism 7 needs to hold the glass door 2 so that it does not fall under its own weight when the glass door 2 is pulled up to its highest position. For this purpose, when assembling the glass door 2, the initial spring pressure of the helical spring 11 of the counterbalance mechanism 7 must be set to an appropriate value according to the weight of the glass door 2.

For this purpose, a spring pressure adjustment mechanism 16 is provided, which is incorporated into the slider section 13.

In FIGS. 1, 5 to 7, the spring pressure adjustment mechanism 16 includes a rotary operating tool 17, a cylindrical body 19 that covers the outer periphery except for the lower surface, and a coil spring 20 that prevents the operating tool 17 from reversing. , the spring 20
and a member 21 for releasing the reverse rotation prevention.

The rotary operating tool 17 has a vertically elongated shape with an upper end 17a formed with a small diameter, and has an operating groove 22 at the lower end into which a driver can be inserted. The cylindrical body 19 has an open bottom, and a through hole 2 in the center of the top wall 19a.
3 is transparent.

The cylinder 19 is fitted into the slider part 13 and the operating tool 17 is fitted into the cylinder 19 from below. It is inserted into the relief groove 15, and the lower end of the screw plate 9 is inserted into the upper end of the small diameter upper end portion 17a, and the screw plate 9 is connected to the screw plate 9 so as to be non-rotatable.

In this assembled state, the operating groove 22 at the lower end of the operating tool 17 faces downward in an open state. Then, the screw plate 9 and the operating tool 17 are integrated, and the cylindrical body 19 is held between the slider portion 13 and the operating tool 17. However, the top wall 19a of the cylindrical body 19 has its front and rear corner cut-off portions in contact with the inner surface of the slider portion 13, allowing relative sliding.

The coil spring 20 is tightly fitted between the operating tool 17 and the cylindrical body 19 on the circular outer peripheral surface of the operating tool 17 having a large intermediate diameter. This coil spring 2
The diameter of the coil 0 is approximately the same as the outer diameter of the operating tool 17 in the free state, and the coil is tightly fitted onto the operating tool 17, and its winding direction is opposite to that of the helical spring 11. It should be noted that

Furthermore, between the operating tool 17 and the cylinder 19, the reversal prevention release member 21 is positioned and held near the lower end so that it can be rotated in a horizontal plane. The reverse rotation prevention release member 21 shown in the figure is formed into a cylindrical shape and engages with both the operating tool 17 and the cylinder body 19 in a concave and convex manner, but is positioned on either one and can freely rotate horizontally by a small angle. And,
And if it can be rotated from below, that's fine. Thus, the coil spring 20 has its upper end 20a connected to the cylinder body 1.
9, the lower ends 20b are connected to the release member 21, respectively.

In such a case, the operating tool 17 is connected to the coil spring 20.
The spring 20 can be rotated only in the P direction, which tightens the spring 20, that is, the P direction, which increases the inner diameter of the spring 20, and cannot rotate in the Q direction, which tightens the spring 20.

Movement of the glass door, counterbalance mechanism, and spring pressure adjustment mechanism After the glass door 2 is linked and assembled to the spring pressure adjustment mechanism 16 and the counterbalance mechanism 7 via the support shaft 12, the glass door 2 is assembled. An initial spring pressure is applied to the helical spring 11 in order to counterbalance it and hold it so that even the highest position does not slip downward.

When applying this initial spring pressure, a driver is inserted into the operating groove 22 at the lower end of the rotary operating tool 17, and the coil spring 20 expands the diameter of the operating tool 17.
Rotate in the direction. Then, in response to this amount of rotational operation, the screw plate 9 and then the nut member 10 screwed thereto rotate in a direction to tighten the helical spring 11, and the initial spring pressure corresponding to the weight of the glass door 2 is applied to the helical spring. 11.

At this time, the operating tool 17 receives a circumferential force due to the repulsive force of the helical spring 11 via the screw plate 9 connected thereto, and the coil spring 20 is wound and tightened.
Try to reverse direction. However, since the coil spring 20 is tightly fitted to the outer periphery of the operating tool 17 and cannot be reduced in diameter any further, both
7 and 20, the operating tool 17 is attached to the spring 20.
It cannot be reversely rotated in the Q direction to reduce the diameter. Therefore, the initial spring pressure applied to the helical spring 11 is maintained. Note that when the spring pressure of the helical spring 11 decreases due to long-term use, the spring 1 can be replaced in the same manner.
Readjust the spring pressure in step 1.

If the initial spring pressure of the helical spring 11 is set too strong, or if it becomes necessary to remove the glass door 2, take the anti-reversal release member 21 and turn it slightly in the direction P described above. Then, the coil spring 20 expands in diameter, the frictional engagement between the spring 20 and the operating tool 17 is released, the operating tool 17 and the screw plate 9 are reversed at once, the nut member 10 is also reversed, and the spring pressure of the helical spring 11 is reduced. is zero or close to it.

Next, when the glass door 2 is pushed down while the helical spring 11 is in use with initial spring pressure applied, the screw plate 9 descends, and the nut member 10 rotates by an amount corresponding to the amount of descent. Then, the helical spring 11 is gradually tightened, and the screw plate 9 and the nut member 10 are further frictionally engaged by the repulsive force of the helical spring 11 due to this tightening, and this frictional engagement force is caused by the repulsive force of the helical spring 11 to close the glass door. To overcome the pulling force of 2 and the weight of the glass door 2, and always stop and support the glass door 2 at an arbitrary vertical height position.

The glass door 2 can be placed at any height above or below.
As shown in Figure 1, the lower end can be tilted inward approximately 90 degrees around the left and right support shafts 12. That is, each support shaft 1
The slider portion 13 of No. 2 has a circumferential relief groove 15.
, and the upper end 17a of the operating tool 17 is loosely inserted into the escape groove 15, so that when the slider section 13 rotates around the horizontal axis within the vertical groove 5, the operating tool 17 remains as it is and the upper end The portion 17a moves relatively within the relief groove 15. Only the slider portion 13, that is, the support shaft 12 rotates.

Latch Mechanism It is necessary to prevent the glass door 2 from falling inward unexpectedly. In the illustrated example, latch mechanisms 25 for this purpose are provided on the left and right sides of the upper stile 2b of the glass door 2.

8 and 9 show the latch mechanism 25, in which a locking piece 27 is provided at the tip of a rod 26 that is slidable in the left-right direction, and this locking piece 27 is attached to the front end of the inner wall of the vertical groove 5. The glass door 2 is held in a vertical position while engaged with the glass door 5a. When the rod 26 is moved toward the center (to the right in the figure), the engagement between the locking piece 27 and the front end 5a of the inner wall is released, and the glass door 2 can be tilted around the support shaft 12.

That is, there is a lot 2 in the latchbox 29.
A slide block 30 connected to the rear end of the latch box 29 is arranged so as to be slidable in the left and right directions, and when a vertically movable latch button 32 provided on the upper wall 31 of the latch box 29 is pressed, the slide block 30 formed on the block 30 moves left and right. The block 30 is moved toward the center, and the locking piece 27 is disengaged from the front end 5a of the inner wall. The latch box 29 includes a spring member 35 that biases the slide block 30 outward (in the locking direction) to the left and right, and the biasing force of the spring member 35 works so that the locking piece 27 and the front end 5a of the inner wall are always engaged in the normal state. . The outer surface of the tip of the locking piece 27 is formed into an inclined guide surface 36, and when the glass door 2 which is in an inverted state returns to the vertical position, the locking piece 27 is attached to the front end 5a of the inner wall. Cross over the tip edge from the inside and engage again.

Link Mechanism If the glass door 2 is allowed to tilt inwards beyond 90 degrees, problems such as the glass touching other objects and breaking may easily occur. It is preferable that the maximum inclination angle of the glass door 2 is limited to about 90 degrees, which is the horizontal position. In the illustrated example, a link mechanism for this purpose is provided.

In FIGS. 1, 3, and 8, the link mechanism has arms 3 attached to the left and right side walls of the glass door 2.
The lower end of the arm 38 is rotatably connected, and the upper end of the arm 38 is attached between the front and rear side walls 5b, 5b of the vertical groove 5 to prevent it from coming off toward the center and to prevent back and forth play so as to be slidable up and down. It is rotatably connected to a slider 39.

When the glass door 2 is tilted inwards to a horizontal position, the lower end of the extension part 40 extending from the slider 39 hits the support shaft slider part 13 as shown in FIG. Approximately 90
In other words, the position is restricted to a substantially horizontal position.

In addition, when the glass door 2 is pulled up to the highest position as shown in FIG. 2, the slider 39 contacts and does not interfere with the outer periphery of the pipe 8 of the counterbalance mechanism 7, as shown in FIGS. 8 and 9. They will fit together like this.

[Another embodiment example]

Although the illustrated example is as described above, the present invention is not limited thereto.

For example, as for the means for preventing the rotation operating tool 17 from reversing in the spring pressure adjustment mechanism 16, the ratchet method previously proposed by the present applicant in Japanese Utility Model Publication No. 16214/1980 may be adopted. The lower end of the screw plate 9 and the rotary operating tool 17 do not need to be directly connected, and they may be connected via an intermediate transmission member. The rotation operation tool 17 may be configured to be rotated around a vertical axis or around a horizontal axis through an operation port from one front or rear side of the slider section 13 or from the center side, or a rotation operation tool 17 that projects upward from the slider section 13 may be used. The rotating operation may be performed via the upper end 17a of the operating tool 17 or an intermediate transmission member connected thereto.
The lower end of the screw plate 9 may fit into the escape groove 15 of the slider portion 13 so as to be relatively movable.

[Brief explanation of drawings]

1 to 9 show embodiments of the invention.
FIG. 1 is a longitudinal sectional side view of the main parts when the glass door is lowered and inverted. Figures 2 and 3 are front views for explaining the movement of the glass door.
The figures show the state in which the glass door is being lowered to an intermediate height position between the upper and lower sides and is being folded inwards. FIG. 4 is a longitudinal sectional front view showing the counterbalance mechanism. Figures 5 and 6 mainly show the support shaft of the glass door, its slider part, and spring pressure adjustment mechanism, with Figure 5 being a vertical front view, and Figure 6 being a vertical side view.
FIG. 7 is an exploded perspective view of the components of the spring pressure adjustment mechanism. 8 and 9 mainly show the latch mechanism, with FIG. 8 being a cross-sectional plan view and FIG. 9 being a vertical cross-sectional front view thereof. FIG. 10 is a longitudinal sectional front view of the main parts of a conventional example. DESCRIPTION OF SYMBOLS 1... Sash, 2... Glass door, 5... Vertical groove, 7... Counter balance mechanism, 8... Pipe, 9... Threaded plate, 10... Nut member, 11...
...Helical spring, 12... Support shaft, 12a... Base end of support shaft, 13... Slider portion, 15... Relief groove,
16... Spring pressure adjustment mechanism, 17... Rotary operating tool,
19... Cylindrical body, 20... Coil spring, 21... Reverse prevention release member, 22... Operation groove.

Claims (1)

[Claims] 1. In a lift-down window in which the glass door 2 located at least on the indoor side can move up and down along the left and right vertical grooves 5 of the sash 1 and can be folded inwards, the glass door 2 can be moved to any desired height. The counterbalance mechanism 7 includes a pipe 8 fixed in each of the left and right vertical grooves 5, and a pipe 8 that is inserted into the pipe 8 so as to be movable up and down.
A threaded plate 9 whose lower end protrudes outside the pipe 8, and a threaded plate 9 disposed inside the pipe 8 and screwed into the threaded plate 9.
The nut member 10 that rotates with the vertical movement of the pipe 8
A spiral spring 11 is provided inside the screw plate 9 and attached to the outer periphery of the screw plate 9, and is tightened by the rotation of the nut member 10. A slider portion 13 is integrally formed on the tip side of the support shaft 12 and is movable up and down within the vertical groove 5 and rotatable around a horizontal axis. A circumferential relief groove 15 is formed in the upper wall portion thereof in a penetrating manner. Adjustment mechanism 1
6, the lower end of the screw plate 9 and the rotary operating tool 17,
A raised/lowered window characterized in that the windows are connected via the relief groove 15. 2. The slider section 13 is formed in a substantially semi-cylindrical shape with an open bottom surface, and the rotary operating tool 17 is incorporated into the slider section 13 so as to be operable from the open bottom side of the slider section 13. Raised and lowered windows as described in section.