JP2007032167A - Crescent lock and sash - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crescent lock in which an internal mechanism is hard to be damaged even if a large force is applied to a handle when a locking operation is performed in an insufficiently closed state of inside and outside screens and the insufficiently closed state is detected with a small rotating amount of the handle and a sash. <P>SOLUTION: An operating piece 33 and a rotating body 120 are stored in a hollow part 21. The operating piece 33 is linearly reciprocatable along the inner surface 28 of the hollow part 21 while being energized by a pressing spring 36, and its tip part 35 is projected and retreated from an inspection window 23 formed in the side wall of the hollow part 21. The rotating body 120 is rotatingly driven by the axial rotation of a handle 11 installed on the other surface side of a pedestal 20 and allows the operating piece 33 to perform linear motion by the rotating operation. When the operating piece 33 is at a movement end position in the direction of the inspection window 23, the side face 342 of the operating piece 33 is pressed against the inner surface 28 of the hollow part 21 to stop the rotation of the handle 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a crescent tablet and a sash.

  A sash such as a sliding window is provided with a crescent lock for fixing the inner and outer shojis in a closed position. The Crescent lock has a pedestal that is fixed to the summon of the shoji and a hanging portion that is supported by the pedestal and extends while rotating by the rotational movement of the handle, and is extended by the rotational movement of the handle. Is engaged with the crescent receiver fixed to the summoning bowl of the shoji, and is locked (locked) in a state in which the shoji and the shoji are closed.

  This type of crescent lock is easy to operate, but sometimes the hook is misidentified as being engaged with the crescent receiver during the locking operation. In such a case, since the inner and outer shojis are not locked, the crime prevention function of the crescent lock is impaired.

  Thus, as means for enhancing the crime prevention function, Patent Documents 1 and 2 are provided with a configuration in which the crescent lock can be locked only when the inner and outer shojis are in the normally closed position. The sash is disclosed. As a specific example, referring to Patent Document 2, a crescent lock having a handle and a hanging portion is provided on a summing cot for a shoji, and a crescent receptacle for engaging the hanging portion is provided on a summon for a shoji, A rotation control mechanism that senses whether or not the inner and outer obstacles are in a normally closed position on the lock, and allows the handle to rotate only when in the normal closed position and automatically locks in the locked position. Is provided.

  In the above-mentioned crescent lock, if the locking operation of the crescent lock is mistakenly performed when the inner and outer shojis are not sufficiently closed or the inner and outer shojis are opened, When the pivoting operation is performed in the locking direction, the sensing part does not come into contact with the receiving part of the crescent receiver, so that the locking part of the oscillating body engages with the first engaging part on the pedestal side and the pivoting of the handle is prevented. The Accordingly, since the handle cannot be rotated further in the locking direction, erroneous locking is prevented in advance.

  By the way, if the locking operation is forcibly performed in the state where the closure of the inner and outer shoji is insufficient, or when the inner or outer shoji is opened accidentally, the rotation of the handle is forcibly blocked. In many cases, excessive force is added to the Therefore, it is necessary for the rotation prevention mechanism to have a mechanical strength that can sufficiently withstand such a force.

  From the viewpoint of operability, there is little to detect whether the locking operation has been performed in an inadequately closed state, or when the internal and external doors have been opened. It is desirable to be able to detect the rotation angle.

  However, the conventional crescent lock represented by Patent Document 2 and the like has a structure in which the engaging portion of the oscillating body is engaged with the first engaging portion on the pedestal side on the rotation surface. When a large force is applied between the stop portion and the first engaging portion on the pedestal side, there is a problem that mechanical failure and damage are likely to occur between the two.

In addition, since the rotation prevention action of the handle is based on engaging the locking portion of the rocking body with the first engaging portion on the pedestal side on the rotation surface, it is detected that the locking operation is incorrect. Therefore, there is a problem that the handle must be rotated to a considerably large rotation angle, and there is room for improvement in operability.
Japanese Patent Laid-Open No. 9-155854 JP-A-9-158585

  The problem of the present invention is that a large force is applied to the handle when the locking operation is mistakenly performed in a state in which the inner and outer shojis are not sufficiently closed or in a state in which the inner and outer shojis are opened. Another object of the present invention is to provide a highly reliable crescent lock and sash that is less likely to damage the internal mechanism.

  Another object of the present invention is that a small handle rotation angle indicates that the locking operation is mistakenly performed in a state in which the inner and outer shojis are not sufficiently closed or in a state in which the inner and outer shojis are opened. It is to provide a crescent lock and a sash with good operability that can be detected by the above.

  In order to solve the above-described problem, the crescent lock according to the present invention includes a pedestal, an operating piece, and a rotating body. The pedestal has a hollow portion on one surface side, and the operating piece and the rotating body are housed inside the hollow portion. The actuating piece is linearly reciprocable along the inner surface of the cavity while being urged by a pressing spring, and the tip protrudes or retracts from a detection window provided on the side wall of the cavity. To do. The rotating body is rotationally driven by the shaft rotation of a handle provided on the other surface side of the pedestal, and allows the operating piece to linearly move by the rotating operation. And when the said operation piece exists in the movement termination position to the direction of the said detection window, the side surface of the said operation piece is pressed on the said inner surface of the said cavity part, and rotation of the said handle is prevented.

  The above-described crescent lock according to the present invention is combined with a pouch, a pouch and a crescent receiver to form a sash. The Crescent lock is attached to the pallet's summon bowl at the pedestal. As for the shoji, the summon basket is equipped with a crescent. The crescent receptacle is in a position corresponding to the crescent lock. The crescent lock prevents the rotation of the handle by pressing the side surface of the operating piece against the inner side surface of the cavity when the external obstacle is not in the normal closed position with respect to the internal obstacle.

  In the sash according to the present invention, when the handle of the crescent lock is rotated, the rotating body rotates about the handle shaft. The operating piece is urged by the pressing spring, follows the rotational position of the rotating body, and slides linearly in the direction of the detection window.

  When the external obstacle is in the normal closed position with respect to the internal obstacle, the operating piece is prevented from sliding at a position where the tip of the operating piece comes into contact with the crescent receiver. When the operating piece is in this position, the rotation preventing action from the operating piece to the rotating body does not work. Therefore, the handle can be sufficiently rotated, and the hanging portion can be locked to the crescent receiver and locked.

  On the other hand, when the external shoji is not in the normal closed position with respect to the internal shroud, the tip of the operating piece does not come into contact with the crescent receiver, so that the operating piece receives the pressing force of the pressing spring and looks in the direction of the detection window. , It moves to the movement end position. When the operation piece of the crescent lock is at the movement end position in the direction of the detection window, the side surface of the operation piece is pressed against the inner side surface of the cavity, and the rotation of the handle is prevented. Therefore, according to the sash according to the present invention, the above-described series of operations avoids a situation in which the so-called externally closed child is not in the normal closed position with respect to the internalized child, so that a high crime prevention is realized. Is done.

  Moreover, since the prevention of the rotation of the handle is obtained by pressing the side surface of the operating piece against the inner side surface of the hollow portion, if the handle is in the closed position, the handle is forcibly rotated by force. As a result, even when an excessive force is applied to the handle, the force can be reliably received on the inner surface of the cavity. Therefore, it is possible to avoid damage to the internal mechanism.

  Further, the rotating motion of the rotating body that is rotationally driven by the shaft rotation of the handle allows the operating piece to linearly move, and when the operating piece is at the end position of movement toward the detection window, the side surface of the operating piece is The rotation angle of the handle is determined by the stroke of the linear movement of the operating piece. Since the operating piece is housed inside the cavity, the stroke of the linear movement of the operating piece is set to a small value determined by the difference between the distance between the opposing inner surfaces and the length of the operating piece. For this reason, it can be detected with a small handle rotation angle that the locking operation has been mistakenly performed in a state in which the inner and outer obstacles are not sufficiently closed, or in a state where the inner and outer obstacles are opened.

  Further, the crescent lock according to the present invention has a working degree and a rotating body, which are main components, provided in the cavity of the pedestal, so that the degree of freedom in design is increased.

As described above, according to the present invention, the following effects can be obtained.
(A) The internal mechanism even if a large force is applied to the handle when the inner and outer shojis are not sufficiently closed, or when the inner and outer shojis are opened accidentally It is possible to provide a highly reliable crescent lock and sash that is less likely to be damaged.
(B) Operability capable of detecting at a small handle rotation angle that the locking operation has been performed in an inadequately closed state with the inner and outer shoji or with the inner and outer shoji open. It is possible to provide a crescent tablet and a sash that are less likely to break, which is to provide a good crescent tablet and a sash.

  Other features of the present invention and the operational effects thereof will be described in more detail by way of examples with reference to the accompanying drawings.

  1 is a plan view showing an embodiment of the crescent lock according to the present invention, FIG. 2 is a bottom view of the crescent lock shown in FIG. 1, FIG. 3 is a sectional view taken along line 3-3 in FIG. FIG. 4 is a sectional view taken along line 4-4. First, referring to FIG. 1 showing the appearance, the illustrated crescent lock includes a handle 11, a hook 13, and a pedestal 20.

  The handle 11 and the hanging portion 13 are provided on the surface side of the base 20. The hook 13 is integrated with the handle 11 and rotates together with the handle 11. Since the handle 11 and the hanging portion 13 are required to have mechanical strength, it is preferable that the handle 11 and the hanging portion 13 are made of a metal-based material. The pedestal 20 may be made of a plastic material or a metal material. This embodiment shows an example in which the base 20 is a plastic molded body.

  Next, referring to FIGS. 2 to 4, the base 20 is provided with a hollow portion 21 on one surface opposite to the surface on which the handle 11 and the hanging portion 13 are provided. An operating piece 33 and a rotating body 120 are housed inside the cavity 21. The actuating piece 33 can be reciprocated linearly along the inner surface 28 of the cavity 21 while being urged by the pressing spring 36, and the detection window 23 having the tip 35 provided on the side wall of the cavity 21. Protrudes or retracts.

  The illustrated operation piece 33 includes a base portion 34, a tip portion 35, a step portion 340, a spring receiving portion 341, and a guide groove 346, and is provided side by side on the rotating body 120. The operating piece 33 can be formed of a plastic molded product, a metal material press-molded product, or the like.

  The base portion 34 has an inclined surface 344 on the side surface facing the rotating body 120, and the tip of the inclined surface 344 is a protruding end portion 345. Below the inclined surface 344, a concave step 340 that falls from the surface of the base portion 34 is provided, and the front end surface 343 of the concave step 340 is in a position retreated from the front end surface of the base portion 34. A side surface 342 of the base portion 34 opposite to the side where the concave step portion 340 is provided is opposed to the inner side surface 28 of the cavity portion 21.

  The tip portion 35 is provided so as to protrude from the front surface of the base portion 34. The tip portion 35 protrudes or retracts from the detection window 23 that opens in the side wall surface of the pedestal 20 constituting the cavity portion 21. The spring receiving portion 341 is for receiving the pressing spring 36 and protrudes from the upper surface of the base portion 34. The spring receiving portion 341 is provided with a groove or a protrusion for receiving one end of the pressing spring 36.

  The bottom surface of the base portion 34 is a portion that fits with the bottom surface of the cavity portion 21, and a guide groove 346 is formed. The guide groove 346 is combined with the guide rail 25 and has a shape corresponding to the guide rail 25.

  Next, the rotating body 120 is driven to rotate by the shaft rotation of the handle 11 provided on the other surface side of the pedestal 20, and the operating piece 33 is allowed to linearly move by the rotating operation. When in the movement end position in the direction, the side surface of the operating piece 33 is pressed against the inner side surface 28 of the cavity portion 21 to prevent the handle 11 from rotating. The shaft 12 of the handle 11 is attached to the rotating body 120 so as to penetrate therethrough. A return spring 30 is stretched between a protrusion 301 protruding from the pedestal 20 and a protrusion 302 protruding from one surface of the rotating body 120, and the rotating body 120 applies the tensile force of the return spring 30. I received the power to return to the original.

  The relative relationship between the rotating body 120 and the operating piece 33 appears in FIG. Hereinafter, a description will be given with reference to FIG. Referring to the figure, the rotating body 120 includes a receiving part 31 and a pressing part 32. The receiving portion 31 and the pressing portion 32 are provided on the outer periphery of the rotating body 120 with an interval in the rotation direction of the rotating body 120. The receiving portion 31 rises from the concave step surface 121 of the rotating body 120 to form a wall surface, and receives the front end edge 343 of the operating piece 33 urged by the pressing spring 36 by the wall surface. Therefore, when the rotating body 120 rotates in the direction indicated by the arrow A1, the operating piece 33 slides linearly following the rotation of the rotating body 120 while the front end edge 343 is received by the receiving portion 31. It will be.

  The pressing portion 32 is for preventing the rotation of the handle 11 by pressing the operating piece 33 against the inner side surface 28 according to the sliding position of the operating piece 33. The pressing portion 32 is provided behind the receiving portion 31 with an interval when viewed in the rotation direction indicated by the arrow A1. The pressing part 32 rises from the concave step surface 121 of the rotating body 120.

  As described above, the operating piece 33 slides linearly following the rotation of the rotating body 120. However, when the tip of the tip 35 of the operating piece 33 is pressed, the operating piece 33 is It cannot follow the rotation of the rotator 120 and remains in that position. In such a case, as the rotating body 120 continues to rotate further, the pressing portion 33 comes into contact with the protruding end portion 345 located at the tip of the inclined surface 344 of the operating piece 33 and presses it. Then, the operating piece 33 is pressed against the inner side surface 28 of the cavity 21 by the above-described pressing.

  The interaction relationship between the operating piece 33 and the rotating body 120 described above is an important point of the crescent lock according to the present invention. Next, this point will be described in detail with reference to the operation when the crescent lock is incorporated in the sash.

  FIG. 5 is a front view showing an embodiment of a sash incorporating the crescent lock according to the present invention, and shows a state when the sash is not in a normal closed position. The illustrated sash includes a crescent lock 1, a crescent receiver 51, an inner limb 3, an outer limb 4, and a window frame 5. The inner shoji 3 has a glass window 302 inside the summoning bowl 301, and the outer shoji 4 has a glass window 402 inside the summing bowl 401. However, it is not essential to have a glass window.

  The crescent lock 1 is shown in FIGS. 1 to 4, and is attached so that the hollow portion 21 (see FIG. 2) of the base 20 faces the surface of the summon bar 301. The crescent receiver 51 is attached to the summoning bowl 401.

  6-8 is a figure explaining operation | movement of the state in which the external obstacle 4 is not in a normal closed position with respect to the internal obstacle 3, ie, the state shown in FIG.

  First, in FIG. 6, the rotation angle of the handle 11 is zero degrees. At this rotational angle, the operating piece 33 is in a position immediately before the rear end side contacts the inner side surface 28 corresponding to the rotational position of the receiving portion 31.

  When the handle 11 is rotated in the direction of arrow A1 from the state of FIG. 6, the receiving portion 31 of the rotating body 120 is also rotated in the same direction, and the front end surface 343 of the operating piece 33 follows the rotation. As a result, the operating piece 33 slides linearly toward the detection window 23, and the distal end portion 35 protrudes from the detection window 23 as illustrated in FIG. 7. In FIG. 7, the rotation angle of the handle 11 is, for example, 30 degrees. When the outer shoji 4 is not in the normally closed position with respect to the inner shoji 3, the crescent receiver 51 is in a position away from the detection window 23, and the distal end portion 35 protruding from the detection window 23 is connected to the first receiving portion 511. It slides deep without touching.

  When the handle 11 is further rotated in the direction of arrow A1 from the state of FIG. 7, the receiving portion 31 of the rotating body 120 is also rotated in the same direction, and the front end surface 343 of the operating piece 33 follows the rotation. As a result, although the operating piece 33 slides linearly toward the detection window 23, the outer cover 4 is not in the normally closed position with respect to the inner cover 3, so that the crescent receiver 51 is positioned away from the detection window 23. The tip portion 35 protruding from the detection window 23 does not contact the first receiving portion 511.

  When the handle 11 is further rotated, the receiving portion 31 is separated from the front end edge 343 of the operating piece 33, and the operating piece 33 comes into contact with the inner side surface 28 of the cavity portion 21 by the spring pressure, and the rotating body 120 is pressed. The part 32 comes into contact with the protruding end part 345 of the operating piece 33. In this state, when the handle 11 is further rotated, as shown in FIG. 8, a force F1 is applied from the pressing portion 32 to the projecting end portion 345 of the operating piece 33, and the force F1 causes the operating piece 33 to move. The side surface 342 is pressed against the inner side surface 28 and the rotation of the handle 11 is also prevented. In FIG. 8, the rotation angle of the handle 11 can be set to 48 degrees or less, for example.

  By the above-described series of operations, a situation in which the so-called empty closing is performed in a state where the external shoji is not in the normal closing position with respect to the internal shoji is avoided, and high crime prevention is realized.

  Here, the rotating motion of the rotating body 120 that is driven to rotate by the shaft rotation of the handle 11 allows the operating piece 33 to move linearly, and when the operating piece 33 is at the movement end position in the direction of the detection window 23, the operation is performed. Since the side surface of the piece 33 is pressed against the inner side surface 28 of the hollow portion 21 to prevent the handle 11 from rotating, the rotation angle of the handle 11 is determined by the stroke of the linear motion of the operating piece 33. Since the operating piece 33 is accommodated in the cavity portion 21, the stroke of the linear movement of the operating piece 33 is a small value determined by the difference between the distance between the opposing inner side surfaces 28-28 and the length of the operating piece 33. Is set. In the case of the embodiment, as described above, for example, it is 48 degrees. For this reason, it becomes possible to detect with a small handle rotation angle that the locking operation is mistakenly performed in a state in which the inner and outer children are not sufficiently closed, or in a state where the inner and outer children are opened. , Operability is improved.

  In addition, the rotation prevention of the handle 11 is obtained by pressing the side surface of the operating piece 33 against the inner side surface 28 of the cavity portion 21. Even if an excessive force is applied to the handle 11 in an attempt to force the rotation of the handle 11, the force can be reliably received by the inner surface 28 of the cavity portion 21. Therefore, it becomes possible to avoid the internal mechanism, for example, the guide rail 25 from being damaged, and the reliability is improved.

  In a state where the operation piece 33 is pressed against the inner side surface 28, for example, 0... Between the inner wall surface of the guide groove 346 and the side surface of the guide rail 25 opposite to the surface facing the inner side surface 28. An interval of about 5 mm can be generated. By carrying out like this, the malfunction which the guide rail 25 breaks can be avoided.

  Through such a series of operations, it is possible to detect an abnormality that the sash is not in the normally closed position, and the state shown in FIG. 6 is restored to the state shown in FIG. After the position, the locking operation can be performed again. For this reason, so-called empty closing is avoided and high crime prevention is realized. The return of the handle 11 is automatically performed by a return spring 30 (see FIG. 2).

  In the crescent lock according to the present invention, the handle 11 is provided on the other surface side of the pedestal 20, and main parts such as the rotating body 120 and the operating piece 33 are provided in the cavity portion 21. According to such a configuration, the hanging portion 13, the rotating body 120, and the operating piece 33 can be individually designed, and the degree of freedom in design is increased.

  Next, the operation when the external shoji is in the normal closed position with respect to the internal shoji will be described. FIG. 9 shows a case where the external shoji is in a normally closed position with respect to the internal shoji, and FIGS. 10 to 12 are cross-sectional views for explaining the operation in a state where the external shoji 4 is in the normal closed position with respect to the internal shoji 3. It is.

  First, as shown in FIG. 10, when the rotation angle of the handle 11 is zero degree, the operating piece 33 is retracted to a position immediately before the pressing portion 343 is received by the receiving portion 31 and the rear portion is in contact with the inner side surface 28. is doing.

  When the handle 11 is rotated in the direction of the arrow A1 from the state of FIG. 10, the receiving portion 31 of the rotating body 120 is also rotated in the same direction, and the front end surface 343 of the operating piece 33 follows the rotation. As a result, the operating piece 33 slides linearly toward the detection window 23, and the distal end portion 35 projects from the detection window 23 as shown in FIG. Here, since the outer shoji 4 is in the normally closed position with respect to the inner shoji 3, the crescent receiver 51 is in a position that coincides with the detection window 23, and the distal end portion 35 protruding from the detection window 23 is the first receiving section. 511 abuts.

  The front end portion 35 protruding from the detection window 23 abuts on the first receiving portion 511, thereby preventing the operating piece 33 from sliding, and the protruding end portion 345 of the operating piece 33 acts on the pressing portion 32 of the rotating body 120. It will be in the position where it does not contact. Therefore, the handle 11 can be further rotated in the direction of the arrow A1, and finally, as shown in FIG. 12, it can be rotated to the normal closed position located on the upper side opposite to FIG. Thereby, the hanging portion 13 (see FIG. 2) is completely engaged with the second receiving portion 512 and locked.

  FIG. 13 is a sectional view showing another embodiment of the crescent lock according to the present invention. In the figure, the same reference numerals are assigned to the components appearing in FIGS. The crescent lock of FIG. 13 is different from the crescent lock shown in FIGS. 1 to 4 in that the pressing portion 32 of the rotating body 120 is an inclined surface having no clear step.

In a state in which the external shoji is not in the normal closed position with respect to the internal shoji, as shown in FIG. Press to
The side surface 342 of the operating piece 33 is pressed against the inner side surface 28 of the cavity 21. Therefore, an operational effect equivalent to that of the crescent tablet shown in FIGS. 1 to 4 can be obtained.

  FIG. 15 is a bottom view showing still another embodiment of the crescent lock according to the present invention, and FIG. 16 is a partially enlarged sectional view of the crescent lock shown in FIG. In the figure, parts corresponding to the constituent parts appearing in the above-mentioned drawings are given the same reference numerals. The illustrated crescent lock includes a reinforcing plate 9. The reinforcing plate 9 is made of, for example, a metal flat plate, and is disposed along the inner surface of the cavity 21. The operating piece 33 and the rotating body 120 are disposed inside the cavity 21 on the surface of the reinforcing plate 9.

  According to the above structure, since the pedestal 20 is made of a material other than metal, for example, plastic, the support function by the reinforcing plate 9 is ensured even when the pedestal 20 is burned out due to a fire or the like. For this reason, it becomes a structure excellent in fire resistance.

  When the reinforcing plate 9 is used, a concave groove 26 is formed on the inner side surface 28 of the cavity portion 21 from the bottom surface along the wall surface. The reinforcing plate 9 includes a bottom surface portion 91, a rising portion 92, and a fastening portion 93. The fastening portion 93 includes a second through hole 931.

  The bottom surface portion 91 is formed in a region extending from the bottom surface of the cavity portion 21 to the inside of the concave groove 26. The rising portion 92 is bent vertically from the bottom surface portion 91 inside the concave groove 26, and is formed along the inner side surface 28. The fastening portion 93 is disposed so that the second through hole 931 overlaps the first through hole 61 by bending vertically from the rising portion 92.

  In the case of the above structure, the reinforcing plate 9 has the rising portion 92 rising inside the concave groove 26, and the inner side surface 28 on which the operating piece 33 slides can be made substantially flush. This structure is important from the viewpoint of avoiding the sliding trouble of the operating piece 33.

  That is, the reinforcing plate 9 is attached along the inner side surface 28 of the hollow portion 21 of the pedestal 20 and is likely to be displaced during attachment. When a displacement occurs in the reinforcing plate 9, the interval between the reinforcing plate 9 and the operating piece 33 is narrowed, and the sliding operation of the operating piece 33 may be hindered. In the case of the embodiment, the reinforcing plate 9 has the rising portion 92 rising inside the concave groove 26, and the inner side surface 28 on which the operating piece 33 slides can be substantially coplanar. Can be avoided.

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.

It is a top view which shows one Example of the crescent lock which concerns on this invention. FIG. 2 is a bottom view of the crescent lock shown in FIG. 1. FIG. 3 is a sectional view of the crescent lock shown in FIG. 1 taken along line 3-3. FIG. 4 is a cross-sectional view taken along line 4-4 of the crescent lock shown in FIG. It is a front view which shows one Example of the sash incorporating the crescent lock which concerns on this invention, and has shown the state when not in a normal closed position. It is sectional drawing explaining operation | movement of the state which is not in a normal closed position. It is sectional drawing of the state which rotated further from the state shown in FIG. It is sectional drawing of the state rotated further from the state shown in FIG. It is a front view which shows one Example of the sash incorporating the crescent lock which concerns on this invention, and has shown the state when it exists in a normal closed position. It is a figure explaining operation | movement of a normal closed position state. It is a figure which shows the state rotated further from the state shown in FIG. It is a figure which shows the state rotated further from the state shown in FIG. It is a bottom view which shows another one Example of the crescent lock which concerns on this invention. It is another bottom view which shows another one Example of the crescent lock which concerns on this invention. It is the elements on larger scale of the crescent lock shown in FIG.

Explanation of symbols

11 Handle 13 Hook 20 Base 21 Cavity 23 Detection Window 28 Inner Side 33 Actuation Piece

Claims (2)

A crescent lock including a pedestal, an operating piece, and a rotating body,
The pedestal has a hollow portion on one side,
The operating piece and the rotating body are housed inside the cavity,
The actuating piece is linearly reciprocable along the inner surface of the cavity while being urged by a pressing spring, and the tip protrudes or retracts from a detection window provided on the side wall of the cavity. Is what
The rotating body is driven to rotate by the shaft rotation of a handle provided on the other surface side of the pedestal. The rotating piece allows the operating piece to linearly move, and the operating piece moves in the direction of the detection window. When in the end position, the side surface of the operating piece is pressed against the inner side surface of the cavity to prevent rotation of the handle;
Crescent tablets. A sash including a crescent lock, a pouch, a pelvis, and a crescent receptacle,
The crescent lock is the one described in claim 1, and is attached to the stamen of the inner shoji at the pedestal part,
The external shoji is provided with the crescent receptacle in a summon bowl, and the crescent receptacle is in a position corresponding to the crescent lock.
sash.