JPS6127430Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a window closing device.

A crescent is provided on the connecting frame of the shoji to pull and draw the shoji, or a slide bar is fitted to the connecting frame together with the crescent so that it can move up and down, and the pulling tool at the tip of the slide bar is moved above the opening frame. Some are equipped with tightening handles that engage the frame and lower frame to pull the stile of the shoji at three points in the top and bottom center. These locking devices can be unlocked from the outside by breaking the glass frame fitted to the shoji screen and making a hole, then turning the handle on the locking device and unlocking it from the outside. It is becoming.

Some of these locking devices are designed to allow the handle to be removed only after locking, thereby preventing the handle from falling off during normal use (Japanese Utility Model Publication No. 48-21990). However, with this known opening/closing lock device, it is not possible to insert a screwdriver or the like through the keyhole and rotate the operating shaft to which the removed handle is connected.
In addition, the idea disclosed in Japanese Utility Model Publication No. 37-15094 is that a square hole is provided in the shaft on which the arm serving as the latch is pivotally attached, and a removable handle is inserted into the square hole so that the center of the shaft is inserted. By pressing the push rod protruding into the square hole and releasing the clutch fixed to the push rod, the arm is released from being locked against the bearing, and the handle is rotated to latch. The arm of the lock can be rotated, but if you use a tool that fits the square hole, you can push the push rod to unlock it, so it is not a perfect lock. Furthermore, in this known example, there is a risk that the handle may fall off in the unlocked state.

This device is designed so that the handle cannot be attached or detached during normal use, and can only be removed when the handle is locked.After the handle is removed, the shaft to which the handle is connected cannot be rotated simply by applying rotational force. , the purpose is to provide a more complete opening tightening device.

Embodiments of this invention will be described below with reference to the drawings. Figure 1 is a front view of a crescent used for sliding shoji and single sliding shoji, and Figure 2 is A-A of Figure 1.
3 is a sectional view taken along line BB in FIG. 2, FIG. 4 is a right side view in FIG. 2, and FIG. 5 is a sectional view taken along line GG in FIG. 2. A crescent catch 1 is fixed to the connecting stile of the outer shoji of the sliding shoji, and the bent part 1a at the tip of the crescent catch 1 can be rotated to the main body 2 of the crescent fixed to the joining stile of the inner shoji. It is possible to engage with a composite cam 4a consisting of a plate cam and an end cam of a crescent plate 4 fixed integrally with the operation shaft 3 inserted into the holder or separately (not shown), and the composite cam 4a can be operated in the direction of rotation. The shape is such that the distance from the shaft 3 in the radial and axial directions gradually changes.

As shown in FIG. 4, the end of the operating shaft 3 has a width across flats, and both ends of the spring 6 that come into contact with the width across flats are locked to the main body 2.

A square hole is bored in the center hole of the operating shaft 3, and a square shaft portion 7a of the handle 7 is slidably fitted therein. The hole of the operating shaft 3 and the shaft portion 7a of the handle 7
The shaft portion 7a can be moved in the axial direction of another polygon or a uniformly spaced distorted circle (Gleichdik), but it may be a tool handle that is rigid against rotation and a hole into which the tool handle is inserted. Therefore, a shaft provided with a key, a spline, or a serration may be used.

The shaft portion 7a is provided with a lock hole 9 into which the tip of a lock pin 8 having hemispherical ends is inserted. The lock pin 8 is movably fitted into a hole between the outer diameter of the operating shaft 3 and the center hole of the main body 2 into which the operating shaft 3 is fitted, and the provided collar allows the shaft portion 7a to be inserted when the shaft portion 7a is not present. The end opposite to the shaft portion 7a is adapted to fit into the lock hole 11 of the boss of the main body 2.
The length of the lock pin 8 is such that when its end is fitted into either of the lock holes 9 or 11, the other end is at the entrance of the lock holes 9 or 11, that is, the inner or outer diameter of the hole in the operating shaft 3. It coincides with the cylindrical surface. Lock pin 8
may be another locking member such as a steel ball, and when one end of the locking member is selectively fitted into either the locking hole 9 or 11, the other end may be at the entrance of that hole.

A key plate 34 with a keyhole is fitted into a circular hole at the end of the operating shaft 3 and a square hole into which the shaft portion 7a is inserted, and is locked by a retaining ring 35 fitted into the circular hole. Key board 34
The key rod 3 is inserted through the key hole of the tool handle 7a, which is integrally or fixed to the shaft 7a.
6 is provided, and a machine screw 37 is provided in the body 2 of the crescent.
The key rod 36 pushes to the right a leaf spring 38 which is fixed by the handle 7 and is constantly energized with a weak force to the extent that it does not push the handle 7 to the left in FIG.

Both sides of the leaf spring 38 are bent along the inner side of the crescent body 2 as shown in FIG. 5, and the clutch groove 3 formed in the operating shaft 3 is located in the center.
A clutch pawl 40 that can be fitted into the leaf spring 38 is fixed to the leaf spring 38. If the leaf spring 38 is rigid in the lateral direction or supported at both ends, the leaf spring 38 may be separated from the side members of the main body 2, and the clutch pawl 40 is enlarged so that the key rod 36 pushes the clutch pawl 40. You can.

When the handle 7 is in the position shown in FIGS. 1 and 2, the handle 7 can be freely attached and detached from the hole in the operating shaft 3. Therefore, the handle 7 can be removed in the locked state. In FIG. 2, the key stick 36 pushes against the leaf spring 38 and the clutch pawl 40 is outside the clutch groove 39. In FIG. 1, when the handle 7 is rotated clockwise, one end of the lock pin 8 is pulled out of the lock hole 11, and the other end enters the lock hole 9. Therefore, if the handle 7 is slightly rotated from the locked position, the shaft portion 7a of the handle 7 cannot be moved in the axial direction, and the handle 7 cannot be pulled out. At the same time, the spring 6 rides on the remaining cylindrical portion with a width across flats at the end of the operating shaft 3. When the handle 7 is rotated 180 degrees, the crescent catch seat 1 and the crescent plate 4 are separated, and at the same time, the spring 6 elastically clamps the width across flats portion of the end of the operating shaft 3. Conversely, when the handle 7 is rotated 180 degrees, the pin 8 is aligned with the lock hole 11.

When the handle 7 is pulled out from the operating shaft 3, the lock pin 8
The base of the clutch enters the lock hole 11, the key rod 36 comes out together, the leaf spring 38 moves to the left in FIG. 2, and the clutch pawl 40 moves together and fits into the clutch groove 39. In this state, even if an attempt is made to rotate the crescent plate 4 using, for example, pliers, the crescent plate 4 will not rotate and cannot be unlocked. Even if you insert the companion handle into the square hole of the operating shaft 3 and try to turn it, it will not turn. If the key plate 34 is made into a small hole with an irregular shape, the crescent plate 4 cannot be rotated unless it is provided with a key rod 36 that can pass through this hole and also has a shaft portion 7a. When the handle 7 is inserted into the operating shaft 3, the key rod 36 pushes the leaf spring 38 to pull out the clutch pawl 40 from the clutch groove 39, and the operating shaft 3 becomes rotatable.

As described above, the shoji tightening device of this invention is provided in the main body 2 with a key bar 36 provided at the end of the tool handle 7a of the operating handle 7 so as to be in line with the tool handle 7a. The operating handle 7 can be attached and detached from the clutch pawl 40, which is pressed and moved in the axial direction of the tool handle 7a by the key rod 36, and is supported so that it cannot be moved laterally, and the clutch groove 39 at the end of the operating shaft 3. Since the shoji locking device is provided so that it can be engaged at any position, it cannot be unlocked by anything other than the handle.

[Brief explanation of the drawing]

Figure 1 is a front view of the embodiment of this invention, Figure 2 is a sectional view taken along line A-A in Figure 1, and Figure 3 is a sectional view taken along line B-B in Figure 2.
4 is a right side view of FIG. 2, and FIG. 5 is a sectional view taken along line GG in FIG. 2. 1... Crescent catch, 2... Crescent body, 3... Operating shaft, 4... Crescent plate, 7...
Handle, 7a...shaft, 8...lock pin,
9, 11...Lock hole, 34...Key board, 36...
Key stick, 38... Leaf spring, 39... Clutch groove, 4
0...Clutch claw.

Claims (1)

[Scope of utility model registration request] Crescent, a tightening handle that has a slide bar on the shoji stile to pull in the shoji, an operating shaft for the tightening handle that has a crescent, and a tool handle that can be inserted into and removed from a separate operating handle. A hole into which the tool handle fits is provided so that the operating handle can be attached and removed only in the locked state, and the rotation of the operating shaft is inhibited by inserting the operating handle into the hole into which the tool handle is inserted. In a shoji tightening device designed to release a clutch that is being held, the tool handle 7 is attached to the end of the tool handle 7a of the operation handle 7 so as to be in line with the tool handle 7a.
A key bar 36 is provided which is thinner than the key bar 36, and a key board 34 is provided with a key hole through which the key bar 36 can be inserted at the bottom of the hole into which the tool handle of the operating shaft 3 is inserted.
It is provided with a spring biased toward the key rod 36 and is moved by the key rod 36 in the axial direction of the tool handle 7a,
A shoji tightening device in which one clutch supported so as not to be moved laterally and the other clutch at the end of an operating shaft 3 can be engaged at a position where an operating handle 7 can be attached and detached.