JPH0310295Y2 - - Google Patents

Description

[Detailed description of the invention] a. Purpose of the invention (industrial application field) The locking device for sliding door shoji according to this invention is used for sweeping window-type sliding doors of entrances and exits of balconies of schools, etc., breezeways, school lunch rooms, etc. Or, it is attached to a window installed in a high place and used as a fire entrance, and when the shoji is closed, the side of the stile of this shoji is pressed against the packing provided on the window frame side, and the soundproofing inside and outside of the shoji is achieved. It is also incorporated into a locking device that locks the shoji from opening, and is used to prevent the handle that operates the locking device from turning when the shoji is locked.

(Prior Art) In a sliding door shoji called a so-called soundproof sash, when the shoji is closed, the side surface of the stile is pressed against a packing attached to a sash frame or the like facing the sill. For this reason, a locking device for fixing a soundproof sliding door shoji is provided with a pulling mechanism for moving the entire sliding door shoji in parallel toward the above-mentioned packing.

7 to 9 show conventional locking devices equipped with such a pulling mechanism. First, this conventional locking device will be explained.

1 is a handle for operating the locking device;
A base body 4 fixed with screws to the vertical stile 3 of the sliding door shoji 2
It is rotatably supported. An arm 6 having a roller 5 supported at its tip is provided at the base of the handle 1. A substantially L-shaped protruding wall 8 is formed on the side surface of the vertical frame or mating mullion 7 facing the vertical frame 3 to which the base body 4 for supporting the handle is fixed, at the same height as the base body 4. A bracket 9 is fixed with screws. Arm 6 supporting the roller 5 mentioned above
When the handle 1 is rotated approximately 150 degrees from the solid line position to the chain line position shown in FIG. The projecting wall 8 is engaged with the projecting wall 8. For this reason,
The arm 6 is attached to the handle 1 so as to be freely rotatable by about 60 degrees. Due to the engagement between the rollers 5 and the projecting wall 8 described above, the vertical stile 3 of the sliding door shoji 2 is moved to the mating mullion 7.
9, and the side of the vertical stile 3 is pressed toward the packing attached to the side of the mullion.

On the other hand, the end of the rotating shaft of the handle 1 described above is inserted into the base plate 10 of the locking device fixed inside the vertical frame 3, and a piece 11 that rotates with the rotation of the handle 1 is supported. . The end of this piece 11 is connected to a lower sliding plate 12 supported on the lower part of the base plate 10 so as to be able to move only in the vertical direction, by a link (not shown), and as the piece 11 rotates, the lower sliding plate 12 It is configured so that it moves up and down. The upper end of this lower sliding plate 12 is pivotally connected to one end of a rotary plate 13 whose center is pivoted to the base plate 10. Furthermore, the lower end of an upper sliding plate 14 supported on the upper part of the base plate 10 so as to be movable only in the vertical direction is pivotally connected to the other end of the rotary plate 13.

Because of this configuration, the above-mentioned handle 1
When the roller 5 and the receiver 9 are engaged by rotating, the upper sliding plate 14 and the lower sliding plate 12 mounted on the substrate 10 simultaneously move downward and upward, respectively. One end portion of a connecting rod 15 is connected to each of the upper and lower sliding plates 14 and 12, respectively. Vertical stile 3
Each connecting rod 1 arranged vertically inside the
The other ends of 5 and 15 are connected to shafts 16 at both the upper and lower ends of the vertical stile 3.
It is engaged with one end of a pulling piece 17 supported so as to be able to rotate freely around the center. Each pulling piece 17,
The other end of 17 faces the ridge 19 on the lower surface of the upper frame 18 or the indoor side surface of the door roller rail 21 on the upper surface of the lower frame 20. By rotating the handle 1, the roller 5 and the receiver 9 are engaged, and at the same time the upper sliding plate 14 is moved downward and the lower sliding plate 12 is moved upward, the upper end of the vertical frame 3 is pivoted. pulled piece 1
7 in the counterclockwise direction in FIG. 8 centering on the axis 16,
The pulling pieces 17 at the lower end similarly rotate clockwise, and the end of each pulling piece 17 abuts against the protrusion 19 or the indoor side surface of the door roller rail 21, pulling both the upper and lower ends of the sliding door shoji 2 into the room. The sliding door shoji 2 is moved inward (right side in FIG. 8), and the indoor side surfaces of the upper stile 22 and lower stile 23 of the sliding door shoji 2 are pressed against the packing 24 attached to the upper frame 18 or the lower frame 20. Since the locking devices are provided at both ends of the sliding door shoji 2, when the handles 1 of both locking devices are rotated, the sliding door shoji is pressed against the packing 24 all around, thereby creating an airtight gap between the sliding door shoji and the window frame. By holding the sliding door shoji, soundproofing between the inside and outside is achieved.

(Problems to be Solved by the Invention) Sliding door shoji equipped with the above-mentioned locking device are sometimes installed at the entrances and exits of balconies or connecting corridors of schools, etc. In such cases, it is necessary to be able to lock the sliding door shoji from both the indoor and outdoor sides, but there have been no locking devices that meet this requirement. In other words, in the conventional locking device, the operating handle was only provided on the indoor side of the sliding door shoji and not on the outdoor side, so when closing the sliding door shoji from the outdoor side, each stile side of the sliding door shoji must be turned toward the packing. It cannot be pressed against the wall, making it impossible to achieve sufficient soundproofing indoors and outdoors.

In order to solve this problem, a locking device as shown in Fig. 6 is provided with operating handles inside and outside the sliding door shoji, and this locking device can be operated from either the inside or outside of the sliding door shoji. Just do it like this. First, the structure and operation of the sliding door shoji lock device shown in FIG. has been done. Each piece 11a, 11b is formed in the shape of a daruma as a whole, and has a non-circular hole 27 at the end, which is the center of rotation, through which a handle for operation is inserted. One ends of connecting arms 28a, 28b constituting a link mechanism are pivotally supported by a shaft 29 at portions of these pieces 11a, 11b slightly away from the hole 27. Further, the other ends of each connecting arm 28a, 28b are connected to each other by a shaft 30, and each connecting arm 28a, 28b is connected to each other by a shaft 30.
An end portion 30a where this shaft 30 protrudes from a and 28b.
is engaged with a long hole 32 of a first sliding plate 31 supported vertically movably at the bottom of the substrate 10. 3
Reference numeral 3 denotes a vertically long elongated hole bored in the first sliding plate 31, and the elongated holes 33, 33 are engaged with pins 34, 34 planted in the substrate 10.

On the other hand, a horizontally long elongated hole 35 is formed at the upper end of the first sliding plate 31, and this elongated hole 35 engages with a pin 37 provided at one end of the rotary plate 36. . This rotating plate 36 has a shaft 38 provided in the center.
It is rotatably supported on the substrate 10, and a similar pin 39 is provided at the other end. The pin 39 provided at the other end of the rotary plate 36 connects to a second sliding plate 40 provided on the top of the board 10 so as to be slidable in the vertical direction.
It engages with a laterally long elongated hole 41 provided in the middle part of. Pins 43, 43 planted in the substrate 10 are engaged with vertically elongated holes 42, 42 formed in the upper and lower parts of the second sliding plate 40, respectively.
The second sliding plate 40 is only movable in the vertical direction with respect to the substrate 10.

The sliding door lock device constructed in this way is attached to the inside of the vertical stile 3 of the sliding door shoji 2, as shown in FIG. 3, which shows an embodiment of the present invention. That is, the base plate 10 and the cover plate 44 are screwed together to form a casing, and this casing is screwed inside the vertical frame 3. Vertical stile 3, which has a larger expected dimension (width in the vertical direction in Figure 3) than the vertical stile used for conventional sliding door shoji, secures sufficient mounting space on the outdoor side and indoor side of glass 45. The rotating shafts of the pair of operating handles 1a and 1b provided indoors and outdoors are inserted through holes formed in the side surface of the vertical stile 3 and the cover plate 44, and are inserted into the frame 1.
It fits into the holes 27, 27 of 1a, 11b. Of the handles 1a and 1b, the handle 1b, which is provided on the indoor side of the glass 45, is provided at its base with an arm 6 that supports a roller 5 at its end, as in the case of the conventional handle 1 shown in FIG. .

The sliding door shoji locking device configured as described above and assembled to a sliding door shoji is such that when one handle of a pair of handles 1a and 1b provided inside and outside of the sliding door shoji is rotated, the other handle is turned. The sliding door shoji can be locked and unlocked from both indoors and outdoors.

That is, for example, when attempting to lock the sliding door shoji by rotating the handle 1b on the indoor side, the handle 1b is rotated from the solid line position to the chain line position, as in the case of the handle 1b shown in FIG. As the handle 1b is rotated in this manner, the piece 11b on the right side of FIG.
The connecting arms 28a and 28b connecting 11b move upward. This causes the left piece 11a to rotate counterclockwise by the same angle. connecting arm 28a,
When 28b rises, the end 30a of the pin 30 connecting both arms 28a and 28b moves to the first sliding plate 3.
1 to the upper end of the elongated hole 32, and further move the handle 1 to the upper end of the long hole 32.
By rotating b, this first sliding plate 31
pull upwards. Here, the connecting arms 28a, 2
In order to prevent the first sliding plate 31 from being pulled up immediately after the roller 8b is raised, the hole in which the end of the pin 30 engages is made into a long hole 32. This is because the distance that the first and second sliding plates 31, 40 must be moved is smaller than the angle that the handle 1b must be rotated to do so. Therefore, if it is desired to increase the distance by which both the sliding plates 31 and 40 are moved when locking, the locking device of the present invention requires a hole to be formed in the first sliding plate 31 for engaging the end portion 30a. As shown in FIG. 1, it is a simple circular hole, and the connecting arm 28a,
This sliding plate 31 is made to be pulled up immediately after 28b is raised. As the first sliding plate 31 rises, the second sliding plate 40, which is connected to the upper end of this sliding plate 31 via the rotary plate 36, descends. first,
Since the ends of the connecting rods 15 (FIGS. 7 and 8) are connected to the ends of the second sliding plates 31 and 40, the vertical movement of the sliding plates 31 and 40 described above Pulling pieces 17 (FIGS. 7 and 8) rotate at both the upper and lower ends of the sliding door shoji 2, and an action is performed to pull the sliding door shoji toward the indoor side. However, depending on the structure of the pulling mechanism provided at both the upper and lower ends of the sliding door shoji, the first and second sliding plates 31 and 40 may be integrated and both sliding plates may move in the same direction. good.

However, in a lock device configured in this way, locking and unlocking operations can be performed not only from inside the room but also from outside, so for crime prevention purposes, it is necessary to lock the lock from outside at night or when going out. It becomes necessary to provide a locking device that prevents unlocking.

In view of the above-mentioned circumstances, it is an object of the present invention to provide a locking device for a sliding door shoji locking device that can be operated from either indoors or outdoors.

b. Structure of the invention (Means for solving the problem) As shown in Fig. 1, the locking device of the locking device for a sliding door shoji of the invention has two parts on both sides of a board 10 which is attached and fixed to the inside of the vertical stile of the sliding door shoji. , a pair of pieces 11a and 11b connected by a transmission mechanism such as a link or a gear, and rotating in opposite directions, each piece 11
A non-circular hole 27 provided at the center of rotation of a and 11b
The shaft of the handle for operation is inserted into each.

Furthermore, a third sliding plate 46 is provided on the substrate 10,
When this sliding plate 46 is moved to one end of movement as shown by the solid line in FIG.
1a and 11b can be rotated regardless of this third sliding plate 46, and when the sliding plate 46 is moved to the other moving end as shown by the chain line in the figure, the pieces 1
A portion of each piece 1a, 11b collides with a portion of the third sliding plate 46 or a member that is driven as the sliding plate 46 moves, thereby preventing rotation of each piece 11a, 11b. I have to.

(Function) In the locking device of the locking device for sliding door shoji of the present invention constructed as described above, in order to lock the sliding door shoji, one must grasp either the handles 1a or 1b provided inside or outside of this shoji. Both handles 1a,
When 1b is rotated, a pair of pieces 11a and 11b supported on both sides of the base plate 10 are rotated to the state shown by chain lines in FIG.

To lock the sliding door shoji in this state, the third sliding plate 46 is moved from the state shown by the solid line in FIG. 1 to the state shown by the chain line. With this movement, a part of the sliding plate 46 or a member driven by the sliding plate 46 enters between the pieces 11a and 11b. Even if an attempt is made to rotate each piece 11a, 11b to release the lock from the state shown by the chain line in FIG. The sliding door shoji cannot be unlocked.

The third sliding plate 46 constituting the locking device can be moved from the indoor side using a knob called a thumb turn, and from the outdoor side by inserting a key.

(Example) Next, as an example of the present invention, a locking device for a sliding door shoji incorporating a locking device will be described.

FIG. 2 is a side view of a locking device for a sliding door shoji incorporating the locking device of the present invention, and FIG. 3 is a cross-sectional view showing the locking device installed on a sliding door shoji. Since the parts other than the locking device are the same as those of the sliding door locking device described earlier with reference to FIG. 6, the same parts are given the same reference numerals and redundant explanation will be omitted.

At the upper part of the base plate 10 supporting the pair of pieces 11a and 11b and provided with the first and second sliding plates 31 and 40,
A third sliding plate 46 for locking is provided at a side position of the second sliding plate 40 so as to be slidable only in the vertical direction with respect to the base plate 10. A pair of horizontally long left and right long holes 47, 47 are provided on both sides of the lower end of the third sliding plate 46, and a vertically long long hole is located between the two long holes 47, 47 at the center of the lower end. 4
8 are formed respectively. Each long hole 47, 48
The long holes 47, 47 which are long in the horizontal direction are provided with pins 50, 5 provided at one end of the blocking arms 49, 49, respectively.
0 is engaged. The pair of blocking arms 49, 4
The other ends of 9 are rotatably connected to each other by a pin 51, and the pin 51 protruding from this joint engages with the elongated hole 48 in the center of the lower end of the third sliding plate 46. A long hole 52 formed in the sliding plate 31 and elongated in the vertical direction is inserted therethrough. Further, a long hole 53 formed in the middle part of the third sliding plate 46 and elongated in the vertical direction is provided.
and a pin 54 provided on the substrate 10 are engaged with each other to prevent the third sliding plate 46 from sliding in any direction other than the vertical direction.

Further, the upper wall portion 55 of the third sliding plate 46
A through hole 56 is formed in the through hole 56, and a protruding piece 58 that protrudes to the side of a lock cylinder 57 rotatably supported on the base plate 10 is engaged with the through hole 56. This lock cylinder 57 has a knob 59 (third
(Fig.) Alternatively, it can be rotated by a key, and by rotating the lock cylinder 57 counterclockwise from the state shown in Fig. 1, the protrusion 58 pushes the third sliding plate 46 downward. Reference numeral 60 denotes a spring that provides elasticity to hold the lock cylinder 57 at both end positions in the rotational direction, and a resilient contact piece 6 fixed to the lock cylinder 57 is attached to this spring 60.
1 is in ballistic contact.

Further, a knob 59 for rotating the locking tube 57 from the indoor side is provided on a portion of the side surface of the vertical stile 3 located above the handle 1b. A key receiver 62 into which a key is inserted is provided on the outer surface of the vertical stile 3 opposite to the knob 59. Further, as described above, protrusions 63 are formed at the ends of the pieces 11a and 11b provided on both sides of the board 10 on the side far from the center of rotation.

Rotate the handle 1b to the state shown by the chain line in FIG.
To lock the lock so that it does not rotate, rotate the knob 59 from the indoor side, or lock the key receiver 6 from the outdoor side.
By rotating the key inserted in 2, the lock cylinder 57 is rotated counterclockwise in FIG. As a result, the third sliding plate 46 is lowered and this sliding plate 4
The blocking arms 49, 49, which are engaged with the lower end portions of 6, are rotated downward. For example, as the third sliding plate 46 descends, the blocking arm 49 located on the right side of FIG. The convex portion 63 of the piece 11b comes to face. Left blocking arm 4
The same applies to 9. Even if an attempt is made to rotate the piece 11b counterclockwise to release the lock from this state, the convex portion 63 of the piece 11b abuts against the end face of the blocking arm 49, and the piece 11b cannot be rotated.
Therefore, the lock cannot be released from either inside or outside.

When unlocking the lock and opening the sliding door shoji, it is sufficient to move each operation part in the opposite direction to the above case. This operation can be performed from either the indoor or outdoor side, but when attempting to unlock from the outdoors, the key must be inserted into the key receptacle 62 and turned. Unlocking work cannot be performed. However, it can be locked and unlocked freely from the indoor side by rotating the knob 59.

In the above embodiment, a link mechanism consisting of connecting arms 28a, 28b is used to rotate the pieces 11a, 11b mounted on the left and right sides of the board 10 in opposite directions. The transmission mechanism for rotating as described above is not limited to this type of mechanism, and for example, gears fixed to each piece 11a, 11b may be meshed with each other. Moreover, the first and second sliding plates 31,
40 in opposite directions.
The present invention is not limited to the rotary plate 36, and if other racks are arranged in a row, racks may be fixed at mutually opposing positions on each of the sliding plates 31 and 40, and a pinion that meshes with both racks may be pivoted to the base plate 10. .

Further, when the above-mentioned locking device is built into the locking mechanism, the operation of rotating the locking cylinder 57 and lowering the third sliding plate 46 is performed using each handle 1a, 1b.
Rotate the handles 1a and 1b to the locked state, and
This must be done with the pieces 11a and 11b connected to each other rotated as shown by the chain lines to the right in FIG. That is, when each piece 11a, 11b is in the unlocked state as shown by the solid line in FIG. Not only is it impossible to prevent the rotation of the handles 1a, 1, but also the handles 1a, 1
When the pieces 11a and 11b are turned toward the locked state by turning b, the lowering blocking arm 4
9, 49 or the lower edge of the third sliding plate 46 and both pieces 1
1a and 11b may mesh with each other, causing damage to the internal mechanism. In order to prevent problems caused by lowering the third sliding plate 46 in the unlocked state, it is desirable to provide an erroneous operation prevention mechanism called a trigger mechanism. This erroneous operation prevention mechanism can be configured as shown in FIG. 5, for example.

That is, the lower end of the blocking plate 69 is pivotally connected to a shaft 68 that is set on the substrate 10 and inserted through a long hole 67 formed in the upper part of the first sliding plate 31 in the vertical direction. Due to the supported spring 70, this blocking plate 6
9 is given elasticity to rotate clockwise as shown in FIG. The lock cylinder 5 is closed at the right edge of the blocking plate 69.
A folding piece 71 is formed at a portion facing the protruding piece 58 of 7. The upper edge of this folding piece 71 is connected to the blocking plate 6
9 rotates to the right, it collides with the lower edge of the protruding piece 58 to prevent rotation of the lock cylinder 57. Furthermore, an elongated hole 72 is formed in the upper part of the blocking plate 69, and the elongated hole 72 is inclined in a direction that approaches the third sliding plate 46 as it goes upward. A pin 73 implanted in the portion engages with the pin 73.

In the erroneous operation prevention mechanism constructed in this way, in the unlocked state, the blocking plate 69 is located in the state shown in FIG. Since the lower edge and the upper edge of the folding piece 71 abut each other, the lock cylinder 57 cannot be rotated, and therefore the third sliding plate 46 cannot be lowered. Next, when the handles 1a and 1b are rotated to the locked state, the first sliding plate 31 is lowered a little more than the state shown in FIG. As the first sliding plate 31 descends, the blocking plate 69 whose upper end has an inclined elongated hole 72 engaged with a pin 73 implanted in the sliding plate 31 rotates counterclockwise in FIG. , the folding piece 71 escapes from below the projecting piece 58. As a result, the lock cylinder 57 becomes rotatable, and the third sliding plate 4
6 can be lowered to lock the locking device.

Furthermore, since the vertical stile 3 on the right side in FIG. 3 faces the mating mullion 7 when the sliding door shoji is closed, the roller 5 and the receiver 9 as described above are used as means for moving this vertical stile 3 toward the indoor side. However, since the vertical stile 3a on the left side faces the vertical frame 64 when closed, the means for moving the vertical stile 3a toward the indoor side is this vertical frame 64.
must be established between. Of course this vertical frame 6
4 may be fixed to the handle 1b and engaged with the roller 5 provided at the base of the handle, but in the example shown in FIG. A cam body 65 as shown in FIG. 4 is provided on the outer surface of the vertical stile 3a and moves up and down as the handles 1a and 1b rotate. This cam body 65 is connected to the first and second sliding plates 3 provided in the locking device.
It is connected to either 1 or 40. On the other hand, a pin 66 is fixed on the inner surface of the vertical frame 64 at a position facing the cam body 65. Handle 1 provided on the left vertical stile 3a to lock the sliding door shoji 2
When either a or 1b is rotated, the cam body 65 provided on the outside surface of the vertical stile 3a rises or descends, and the pin 66 on the inside surface of the vertical frame rides on the convex part of the cam body 65, and the reaction occurs. As a result, the vertical stile 3a moves toward the indoor side.

c. Effects of the invention The locking device for the locking device for sliding door shoji of the present invention is constructed and operates as described above, but since the locking and unlocking of the sliding door shoji can be done from either indoors or outdoors, When installed at the entrance and exit of a balcony, the sliding door shoji can be locked even when someone is out on the balcony to provide soundproofing inside and outside the room, and it is also effective for crime prevention since it can be locked.

[Brief explanation of the drawing]

Fig. 1 is a side view of the locking device of the locking device for sliding door shoji of the present invention, and Fig. 2 is a side view showing an embodiment of the locking device for sliding door shoji incorporating this locking device with the cover plate removed. Fig. 3 is a cross-sectional plan view of a sliding door shoji equipped with this locking device, Fig. 4 is a perspective view of the pulling mechanism provided on the vertical stile, and Fig. 5 is a side view corresponding to the upper part of Fig. 2 showing the erroneous operation prevention mechanism. Figure 6 is a view similar to Figure 2 showing a locking device without the locking device, Figure 7 is a perspective view of a sliding door shoji equipped with a conventional locking device, and Figure 8 shows the upper and lower parts of this sliding door shoji. FIG. 9 is a side view of a handle having a pulling mechanism. 1, 1a, 1b...handle, 2...sliding door shoji, 3, 3a...vertical stile, 4...base, 5...roller, 6...arm, 7...combination mullion, 8...button Wall, 9... Receiver, 10... Board, 11, 11a,
11b...piece, 12...lower sliding plate, 13...rotating plate, 14...upper sliding plate, 15...connecting rod, 16...
...Axis, 17...Pull piece, 18...Top frame, 19...
... Projection, 20 ... Bottom frame, 21 ... Door roller rail, 2
2... Upper stile, 23... Lower stile, 24... Packing, 27... Hole, 28a, 28b... Connecting arm, 2
9, 30... shaft, 31... first sliding plate, 32,
33... Long hole, 34... Pin, 35... Long hole, 3
6... Rotating plate, 37... Pin, 38... Shaft, 39
...Pin, 40...Second sliding plate, 41, 42...
...long hole, 43...pin, 44...cover plate, 45...
Glass, 46... Third sliding plate, 47, 48...
Long hole, 49... Blocking arm, 50, 51... Pin, 5
2, 53...Long hole, 54...Pin, 55...Wall part, 56...Through hole, 57...Lock cylinder, 58......
Projection piece, 59... knob, 60... spring, 61... elastic contact piece, 62... key receiver, 63... convex part, 64...
Vertical frame, 65...cam body, 66...pin, 67...
Long hole, 68...shaft, 69...blocking plate, 70...spring, 71...folding piece, 72...long hole, 73...pin.

Claims (1)

[Scope of utility model registration request] A sliding door in which a pair of pieces, each having a non-circular hole at one end through which the shaft of an operating handle is inserted, are provided on both sides of a board so that they can rotate freely in conjunction with each other, and the sliding door shoji is locked based on the rotation of both pieces. This is a locking device that is incorporated into a shoji locking device and prevents the two pieces from rotating when they are rotated to lock the sliding door shoji. In contrast, a movable sliding plate is provided, and when this sliding plate moves to one end of movement, it allows the rotation of both pieces, and when the sliding plate moves to the other end of movement, it allows this movement. A locking device for a locking device for a sliding door shoji door, in which a part of a sliding plate or a member driven by the sliding plate abuts a part of a piece to prevent rotation of the piece.