JPH0314984B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a linkage device for remotely opening and closing a shoji of a casement window such as a projecting window installed at a high place or a remote location.

As a linkage device that drives the opening and closing of the projecting window,
For example, there is a device disclosed in Japanese Utility Model Application Publication No. 126441/1983. As shown in FIGS. 1 and 2, in this invention, the lower stile 2 of the shoji 1 of the projecting window is inserted into the round hole 5 of the locking piece 4 at the output end of the non-reversible chain 3 through a rigid pin. The non-reversible chain 3 is housed in a linking device 7 fixed to the lower frame 6.

As shown in FIG. 2, the interlocking device 7 has a sprocket 9 fixed to the upper end of a vertical shaft 8 supported in the case of the device, and a worm gear 11 fixed to the lower end. Warm 1
2 are interlocking.

The non-bending side on the right side in FIG. The second piece 14 extends along the wall and changes the direction of the non-reversible chain 3 by 180°.
It extends to the right in the figure, and its terminal end is fixed to the case 13 of the linking device 7 by a pin 15.

The shaft of the worm 12 is connected to a line shaft 16 extending along the lower frame 6, and the handle 1 of the rotational force transmission device is composed of a bevel gear, a spur gear, a shaft, etc.
7, and when the handle 17 is rotated, the worm 12 rotates and transmits rotation to the worm gear 11, causing the sprocket 9 to rotate.

When the operator places the handle 1 below the projecting window,
7 and the sprocket 9 in the direction of arrow A, the irreversible chain 3 is fed out in the direction of arrow B. The shoji 1 is pushed through the round hole 5 of the locking piece 4 at the end of the irreversible chain 3, and the protruding window opens. Conversely, the operator uses the handle 17
If you turn it in the opposite direction, sprocket 9 will move as shown by arrow A.
The non-reversible chain 3 rotates in the opposite direction to arrow B.
, the shoji 1 rotates toward the front, and the projecting window closes.

When opening and closing the projecting window with such a configuration, the distance a between the center of the pin 15 and the center of the piece 14 at the position where the direction of the irreversible chain 3 is changed is 1/2 of the travel distance of the irreversible chain 3. Therefore, when the movement of the shoji 1 is large, the width in the lateral direction of the interlocking device 7 in FIG. 1 becomes extremely large.

The non-reversible chain 3 slides on a guide in the interlocking device 7, making noise and causing wear due to the sliding. It's not efficient.

In the non-reversible chain 3, the pins attached to the shoji are arranged vertically, and the link is deflected by gravity in a direction perpendicular to the board surface of the link, and is subjected to compressive force, so a load is applied in the thickness direction of the link, making it vulnerable to buckling. There is a risk that the irreversible chain may bend due to lateral external force (such as strong winds), causing the window to close.
Unstable when the window is open.

SUMMARY OF THE INVENTION An object of the present invention is to provide a linking device for opening and closing a window that is small in size, efficient, strong, and receives force stably.

In the present invention, two lugs are integrally provided protruding from one side of a longitudinal plate end, and a round hole for link connection is provided in the lugs, and a short plate end is provided at a position opposite to the direction in which the lugs protrude. In the assembled state, links provided with stoppers that abut each other are made of the same number of adjacent links, and the link ends of one piece and the adjacent piece are alternately overlapped, and pivoted and connected by pins that pass through the round holes in the lugs. Each link of consecutive pieces is shifted in the same direction to form a chain, and one end of the non-reversible chain is fixed to an axially long chain foil that engages with the lug side of the link, and the chain is wound spirally. A linking device that supports the axis of the diagonal non-reversible chain foil is fixed to the window frame so that the axis of the diagonal non-reversible chain foil is in the horizontal direction, and the diagonal non-reversible chain is extended from the upper side of the chain foil. This is a linking device for opening and closing a window, in which the other end of a reversible chain is opened and locked to a stile at the open end of a shoji screen.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 3 is a perspective view of the projecting window with the lower part not shown and the transmission device omitted. In the shoji 1 pivotally attached to the upper frame, one end of a diagonal non-reversible chain 21 (to be described later) is locked to the lower stile 2, and the other end of the non-reversible chain 21 is used to move the diagonal non-reversible chain 21 in and out of the outside. The linking device 7 is fixed to the lower frame 6, and the line shaft 16 for driving the linking device 7 is connected to a wheel shaft 18 and arranged along the lower frame 6. In order to drive the line shaft 16, there is provided a rotational force transmission device (not shown) which has the same function as in FIG. 1 and cannot drive the operation side from the diagonal irreversible chain 21.

FIG. 4 is a perspective view of the linkage device. line axis 1
A wheel shaft 18, which is in line with 6 and connected to the line shaft 16, is journalled at both ends of the case 25 of the linkage device. As will be described later, the wheel shaft 18 has a tooth profile similar to that of a general chain foil, but it has a chain foil 19 for an oblique chain that is long in the axial direction.
is fixed. Chain foil 1 for diagonal chain
A diagonal irreversible chain 21 is helically engaged with 9.

The case 25 is centered around the foil shaft 18 so that the diagonal non-reversible chain 21 extending from the case 25 is pushed back into the case 25 by compressive force so that the diagonal irreversible chain 21 does not come off the diagonal chain foil 19. The diagonal irreversible chain 21 includes a cylindrical inner wall 22 with a small gap therebetween, and a guide portion 23 with a tangential plane in contact with the inner wall 22. An opening 24 is provided at the end of the guide portion 23 in the axial direction of the case 25 so as not to interfere with the movement in and out of the diagonal irreversible chain 21 that wraps around the diagonal chain foil 19. Link 2 mentioned later
When the diagonal non-reversible chain 21 enters and exits the case 25, the rear end surface 30 on one side of the longitudinal direction of the diagonal non-reversible chain 21 may slide in and out of the guide portion 23, but in this embodiment, the rear end surface 30 on one side of the longitudinal direction The irreversible chain 21 does not touch.

FIG. 5 is a plan view of the diagonal irreversible chain 21,
The figure is a front view of FIG. 5. Oblique irreversible chain 2
The link 27 of No. 1 has a round hole 28 integrally formed on the end face of one long side of a substantially rectangular steel plate, and has two semicircular lugs 29 having a radius r and concentric with the round hole 28 at the tips thereof. , the outer periphery of the tip of the lug 29 is in contact with an arc of radius R centered on the center of the round hole 28 of the adjacent lug, and a concave groove 31 is formed with approximately a semicircle touching the arc between the adjacent lug 29. It has been formed. The outer corner of the lug 29 forms a recess 32 that is half the size and shape of the groove 31 of the lug 29 and coincides with the groove 31 of the connected link 27 . The corner of the long side opposite to the lug 29 is chamfered 33 with a straight line or a curve close to a straight line. A short side 34 perpendicular to the straight line connecting the centers of the two round holes 28 of the link 27 serves as a stopper between adjacent links 27 whose plate surfaces coincide. If the pitch of the two round holes 28 is p (hereinafter simply referred to as pitch p), the length of the link 27 is 2p.
There is a need for

As shown in FIG. 5, the four links 27 of adjacent pieces are stacked alternately with the ends 27 on the same side, and the round holes 28 are aligned, the pins 35 are inserted, and the washers 36 are attached to the pins 35. After each link 27 is fitted on both sides, the pin 35 is caulked to allow each link 27 to rotate. All chained pieces are links 27 on the left.
The right link 27 adjacent to the left link 27
Two links are stacked one on top of the other, with one link in front of the other. Thickness t of link 27, pin 35
If there is no space for the round hole 28, then the pin 35 is 1
It shifts by 2t per pitch p in the direction perpendicular to the plate surface of the link 27, and shifts laterally in the extending direction of the diagonal irreversible chain 21.

Since the distance between the round hole 28 and the short side 34 of the link 27 is p/2, the short side 34 of the link 27 held by the adjacent piece is connected to the short side 34 of the matching link 27 on the adjacent board surface, When the diagonal irreversible chains 21 are in a straight line, they come into contact with each other and act as stoppers, and the portion of the diagonal irreversible chain 21 that protrudes from the diagonal chain foil 19 in FIG. 4 cannot be bent downward in the middle. . Since there is nothing restraining the middle part upward, it can be bent freely.

FIG. 7 is a drawing showing the tooth profile of the diagonal chain foil. The shape of the tooth bottom is an arc with a radius slightly larger than the radius r of the lug 29 so that the tip of the lug 29 touches the center of the tooth bottom. The shape of the teeth is ear metal 2
The center of 9 is O, and the adjacent lug 29 from the center O
It is an arc whose radius is the shortest distance OA to the outer circumference of the tip and whose center is O. This has the same tooth shape as the chain foil of a chain with cylindrical rollers, and the lug 29 may be configured like a silent chain, in which case it becomes a chain foil for a silent chain.

The length of the diagonal chain foil 19 is a value with a margin added to (n+1)l, where the length of the pin 35 is l and the number of turns of the diagonal irreversible chain 21 on the diagonal chain foil 19 is n.

Diagonal chain foil 19 and diagonal irreversible chain 21
As shown in FIG. 8, a washer 38 is attached to the ring 37 fixed to the end of the diagonal chain foil 19, and a machine screw 39 is inserted into the round hole 28 at the end of the link 27 at the end of the diagonal non-reversible chain 21. It will be inserted and implanted.

When the foil shaft 18 fixing the diagonal chain wheel 19 is rotated in the direction of arrow C in FIG. 4, the diagonal irreversible chain 21 is pushed out in the direction of arrow D.
When the wheel shaft 18 is rotated in the direction opposite to the C direction, the diagonal irreversible chain 21 is wound around the diagonal chain foil 19.

FIG. 8 shows an embodiment using one diagonal irreversible chain, in which a bracket 41 with a round hole is fixed to the lower stile 2 of the shoji 1 of the projecting window shown in FIG. 3 in the direction along the lower stile 2, Align the round hole of the bracket 41 with the round hole 28 on the tip side of the link 27 at the tip of the diagonal irreversible chain 21, insert the machine screw 42, screw the nut 43 into the machine screw 42, and connect the linking device 7 to the lower frame. The case 25 is fixed to the lower frame 6 facing the connecting device 2 so that the longitudinal direction of the linking device 7 is along the lower frame 6.

If the foil shaft 18 of the interlocking device 7 is rotated in the C direction, the shoji 1 will open, and if it is rotated in the opposite direction to the C direction, the shoji 1 will be closed.

FIG. 9 shows an embodiment in which two oblique irreversible chains 21 are used. Diagonal irreversible chain 21R shifted to the right side and diagonal irreversible chain 2 shifted to the left side
1L is connected to the lower stile 2 of the shoji 1. The method of connecting the diagonal non-reversible chains 21R, 21L and the lower stile 2 is to connect the common link 27' on the inside one step before the tips of the diagonal non-reversible chains 21R, 21L from the tips of the diagonal non-reversible chains 21R, 21L. Hold it with the link 27 in front of you, align the washers 44 on both sides, and then tighten the pin 45.
to connect the seven links 27, 27', 27b together, and the two links 27a at the ends are the links 27a
The common link 27' is held between the two, and one link 27b at the end of the diagonal non-reversible chains 21R, 21L is brought into contact with the outside of the link 27a to form five links 27',
27a and 27b are overlapped with washers 46 on both sides, and pins 47 are inserted through them and swaged together. Then, a link 27a shared by a machine screw 42 and a nut 43 is connected to a bracket 41 fixed to the lower stile 2.

According to the embodiment shown in FIG. 9, the ability to support the shoji 1 is doubled compared to the embodiment shown in FIG. 8, and because of the symmetry, no offset force acts on the hinges of the shoji 1.

Irreversible chains are generally geometrically straight and do not bend to one side. Such a geometrical shape that is not bent to one side can be bent by changing the position of the short side 34 of the link 27 so that the middle part is concave or convex to either side with respect to the straight line. can be done.

Also, even if it is made to be geometrically straight, it cannot be bent because the middle part is convex in the opposite direction to the bendable side due to the gaps or elastic deformation of each part. It becomes like this. This point also applies to this embodiment, and the diagonal irreversible chain 2
The diagonal irreversible chain 21 becomes irreversible in a straight state due to the elastic deformation of the contact surface between the round hole 28 and the pin 35 of No. 1, the elastic deformation of the short side 34 of the link 27, and the deflection of the link 27. However, in the installed state shown in Figure 3, the middle part is bent downward.
However, this means that when the shoji 1 tries to bend downward when a compressive force is applied to the diagonal irreversible chain 21 due to strong winds, the force with which the short sides 34 of the links 27 are pressed against each other increases, causing the middle to bend. The open state of the shoji 1 is stabilized only by changing the amount of downward deflection.

Even if the diagonal irreversible chain 21 is arranged perpendicular to the line axis 16, it will still be wound around the diagonal chain foil 19. The reason for this is that the tooth bottom of the diagonal chain foil 19 has a radius r of the lug 29 of the link 27.
It is a larger arc than the round hole 28 of the link 27.
Since there is a gap between the overlapping plate surfaces of the link 27 and between the link 27 and the washer 36, the diagonal non-reversible chain 21 is bent in the direction perpendicular to the plane to be bent, that is, the pin 35 This is because it can be bent in a direction perpendicular to the direction in which it is bent around , and it also allows some twisting.

As shown in Figure 8, connect the diagonal irreversible chain 21 to the shoji 1
When installed obliquely with respect to the lower stile 2, the compressive force applied from the shoji 1 to the diagonal irreversible chain 21 generates a thrust force on the hinge of the shoji 1, causing the shoji 1 to be pushed to one side in the direction of the opening. Therefore, the rattling of the shoji 1 due to the gap caused by installation can be eliminated during use.

As explained above, the present invention provides two lugs protruding from one side of a longitudinal plate end, a round hole for link connection in the lugs, and a short hole at the opposite position in the direction in which the lugs protrude. Links with stoppers that touch each other in the assembled state at the ends of the hand plates are alternately overlapped with the link ends of one piece made of the same number of adjacent links and the link ends of the adjacent pieces, and the holes are passed through the round holes in the lugs. Adjacent pieces are pivotally connected by pins, and each link of successive pieces is shifted in the same direction to form a chain. A non-reversible chain is fixed at one end to an axially long chain foil that engages with the lug side of the link. A linking device that supports the axis of a spirally wound chain foil is fixed to a window frame, and the window frame is arranged so that the axis of the diagonal irreversible chain foil becomes horizontal and the diagonal irreversible chain is extended from the upper side of the chain foil. The other end of the non-reversible chain was opened and locked to the stile at the open end of the shoji.

The diagonal non-reversible chain is therefore fed into the chain foil in a helical manner, so that the dimensions of the linkage device are small. The small size of the interlocking device makes it easy to attach to the window frame. The diagonal irreversible chain is placed between the shoji stile and the linking device so that the pins that connect the links are horizontal, so it bends toward the stable side against the compressive force that tries to close the shoji. Therefore, the shoji will not close suddenly due to strong winds. The interlocking device has no sliding parts, so it functions smoothly, efficiently, and with little noise. When a diagonal irreversible chain is installed diagonally to the stile of a shoji, it exerts a force that pulls the shoji to one side, which prevents the shoji from rattling in the wind. Note that the irreversible chain consists of one type of link, one type of pin, and one type of washer, and has a small number of parts.

As an embodiment of the present invention, an example of opening and closing a shoji of a projecting window is shown, but the present invention is not limited to this, but generally a shoji of a casement window that rotates around a horizontal axis or a vertical axis, or other opening and closing objects. Effective for opening and closing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a projecting window using a conventional linking device, Fig. 2 is an enlarged view of Fig. 1, and Fig. 3 and the following are drawings showing embodiments of the present invention. FIG. 4 is a perspective view of the interlocking device, FIG. 5 is a plan view of the diagonal irreversible chain, FIG. 6 is a front view of FIG. 5, and FIG. 7 is a plan view showing the tooth profile of the diagonal chain foil. 8 is a plan view of an embodiment using one diagonal irreversible chain, and FIG. 9 is a plan view of an embodiment using two diagonal irreversible chains. 1... Shoji, 2... Lower frame, 3... Irreversible chain, 4... Locking piece, 5... Round hole, 6... Lower frame, 7
... Linkage device, 8 ... Vertical axis, 9 ... Sprocket, 11 ... Worm gear, 12 ... Worm,
13... Case, 14... Piece, 16... Line axis, 17... Handle, 18... Foil axis, 19
...Diagonal chain foil, 21, 21R, 21L...
... Oblique irreversible chain, 22 ... Inner wall, 23 ... Guide section, 24 ... Opening, 25 ... Case, 27, 2
7a, 27b...link, 27'...shared link,
28...Round hole, 29...Lug, 30...Dorsal end surface,
31... Concave groove, 32... Recess, 33... Corner chamfer, 34... Short side, 35... Pin, 36... Washer, 37... Ring, 38... Washer, 39... Machine screw, 41 ... Bracket, 42 ... Machine screw, 4
3... Nut, 44... Washer, 45... Pin, 4
6...Washer, 47...Pin, A, B, C, D...
Arrow, a... distance, p... pitch.

Claims (1)

[Claims] 1 Two lugs are integrally provided protruding from one side of the long plate end, and a round hole for link connection is provided in the lugs, and the short plate end is assembled in the opposite position from the direction in which the lugs protrude. The links provided with stoppers that abut each other are stacked alternately with the link ends of one piece and the adjacent piece each made of the same number of adjacent links, and are pivotally connected by a pin passing through a round hole in the lug. A diagonal non-reversible chain that constitutes adjacent pieces and is chained by shifting each link of consecutive pieces in the same direction is fixed at one end to an axially long chain foil that meshes with the lug side of the link, and is wound in a spiral shape. A linking device that supports the axis of the diagonal non-reversible chain foil is fixed to the window frame so that the axis of the diagonal non-reversible chain foil is in the horizontal direction, and the diagonal non-reversible chain is extended from the upper side of the chain foil. A linking device for opening and closing a window, which is formed by opening the other end of a reversible chain and locking it to the stile at the open end of the shoji.