JP4334371B2 - Crescent tablets - Google Patents

Description

  The present invention relates to a crescent lock with an anti-hanging function that can be locked only when the indoor shoji and outdoor shoji are both closed.

  Conventionally, a crescent lock is known as a locking device for a sash such as a sliding window. As shown in FIG. 11, the crescent lock has a base member 51 attached to the vertical shaft of the indoor shoji 54, and a metal cap-like shape attached to the base member 51 via a crescent shaft 53 so as to be rotatable. Of the crescent 52 and a crescent bracket 56 having a hook portion 56a attached to the outdoor shoji 55 and engaged with the crescent 52 (see, for example, Patent Document 1 below).

Further, in the case of the crescent lock 50, the crescent 52 can be rotated even when the inner or outer shoji is in an open state. (Including the summon bowl) may collide with the crescent 52 protruding to the outside of the room, and the crescent may be deformed or damaged. In order to prevent this, for example, in Patent Document 2 below, an anti-hanging function that prevents the operation lever of the crescent lock from rotating in the locking direction except when the indoor shoji and outdoor shoji are both closed. A crescent tablet with the following has been proposed. Specifically, a crescent lock having a hanging portion that extends while rotating by the rotation of the operation lever is provided on the summon child's summon cage, and a crescent receptacle that engages the above-mentioned hanging portion on the summon child's summon rod. Provided, a swingable swinging body is provided on the rotation side including the hook, and one end of the swinging body is locked to a locking part provided on the fixed side, so that the operation lever rotates more than a predetermined angle. And the other end of the oscillating body abuts on the crescent receptacle or the handbag of the external obstacle when the operating lever is rotated when the internal and external obstacles are in the normal closed position. A crescent lock has been proposed in which the locked state of one end of the rocking body and the locking portion is released.
Japanese Patent Laid-Open No. 11-93488 Japanese Patent Laid-Open No. 9-155854

  However, in the case of the anti-hanging structure shown in Patent Document 2 described above, since the oscillating body passes over the crescent receptacle while the oscillating body is in sliding contact with the surface of the crescent receptacle during locking, The surface treatment applied to the crescent bracket will be peeled off by friction, resulting in a poor appearance. In addition, the other end of the oscillating body is actuated by a reaction force that comes into contact with the crescent receptacle or the sumoscope of the shoji, and the oscillating body slides on the surface of the crescent receptacle, so that the operation lever can be rotated. There was a problem that the locking operation was difficult because the resistance increased.

  Then, the main subject of this invention is providing the crescent lock provided with the empty | hanging prevention function first. Secondly, the surface treatment of the crescent bracket is peeled off by allowing the member that abuts the crescent to get over without sliding against the crescent bracket, such as the rocking body provided on the crescent side. An object of the present invention is to provide a crescent lock that avoids the situation and that allows the abutment member to smoothly rotate an operation lever without a large resistance.

In order to solve the above-mentioned problem, as a first aspect of the present invention, a base member fixed to the indoor shoji side, a crescent rotatably attached to the base member, and an operation lever for rotating the crescent In a crescent lock comprising a locking metal fitting provided with, and a crescent receiving metal fitting having a hook portion that is fixed to an outdoor shoji side and engages the crescent,
If the indoor shoji and the outdoor shoji are normally closed during the turning operation of the crescent on the turning side including the crescent, an operation member is provided so as to be swingable so that one end side contacts the crescent receiving bracket, The operation lever portion is provided with an anti-hanging member that is biased and held toward the crescent side and has a linear groove that engages with a protrusion formed on the other end side of the operating member, and An engaging step portion that forms a sliding contact portion in which the tip portion of the anti-hanging member slides on the base member and engages the tip portion of the anti-hanging member in an intermediate portion of the sliding contact portion. Forming,
If the indoor and outdoor shojis are normally closed during the turning operation of the crescent, the one end side of the actuating member comes into contact with the crescent bracket, and the operation lever is subsequently rotated to form the empty hanging prevention member. The operating member is allowed to rotate by sliding the projecting portion of the operating member in the linear groove formed, and the emptying prevention member is pushed against the urging force. If the distal end of the prevention member is rotated without engaging with the engagement step portion and the indoor and outdoor shojis are not normally closed, the distal end of the emptying prevention member is not moved when the operation lever is rotated. A crescent lock is provided in which further rotation is prevented by engaging with the engaging step portion.

  In the first aspect of the present invention, if the indoor and outdoor shojis are normally closed during the turning operation of the crescent, one end side of the actuating member comes into contact with the crescent bracket, and the operation lever is continuously rotated. As a result, the operating lever is allowed to rotate by sliding the protrusion of the operating member in the linear groove formed in the emptying preventing member, and the emptying preventing member resists the urging force. Then, as the operating member swings, the tip of the emptying prevention member is rotated without being engaged with the engagement step portion. At this time, the actuating member swings away from the crescent receptacle, so that the operation member can get over without being brought into sliding contact with the crescent receptacle. Moreover, since it can get over without slidably contacting a crescent receiving metal fitting, there is no big resistance, and an operation lever can be smoothly rotated now.

  According to a second aspect of the present invention, there is provided the crescent lock according to the first aspect, wherein the linear groove of the anti-hanging member is formed in a tangential direction with respect to the rotating direction.

  According to a third aspect of the present invention, there is provided the crescent lock according to the first or second aspect, wherein the actuating member and the emptying preventing member are installed in a hollow space formed on the inner surface side of the operation lever. Is done.

  As a fourth aspect of the present invention, the sliding contact portion is a notch groove formed in the peripheral portion of the boss portion serving as the crescent installation seating surface of the base member, and is formed relative to the rotation direction from the lower end side. A first sliding contact portion having a large notch size and a second sliding contact portion having a relatively small notch size continuous with the first sliding contact portion, and the engagement step portion is formed at the end of the first sliding contact portion. A crescent tablet according to any one of claims 1 to 3 is provided.

  As described above in detail, according to the present invention, the abutting member (operating member) to the crescent receptacle provided on the crescent side can be overcome without sliding on the crescent receptacle, so that the surface treatment of the crescent receptacle is performed. While being able to prevent the situation such as peeling off, the operating member comes into contact with the crescent bracket, but it does not slide when getting over, so there is no great resistance and the operating lever can be operated with a small force.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a view showing a crescent lock 1 according to the present invention, FIG. 2 (A) shows a rotation preventing state, FIG. 2 (B) is a front view showing a locked state, and FIG. 3 is an exploded view.

  First, a crescent lock 1 includes a base member 3 attached to a sump of a shoji screen with screws or the like, and a crescent 5 attached to the base member 3 so as to be rotatable about a rotation shaft 4 as a rotation center. An operating member 7 and an emptying preventing member 8 which are added to enable locking only when the indoor shoji and the outdoor shoji are both closed, and an operation lever integrally provided with the rotating shaft 4 6 and a crescent socket 11 having a hook for engaging the crescent 5 with a screw or the like attached to the sump of the outdoor shoji.

  Then, as shown in FIG. 2B, the wall height formed around the crescent 5 is gradually tapered by picking the operating lever 6 and rotating the crescent 5 within a range of about 180 degrees. The changed annular peripheral wall 5A is engaged with and disengaged from the crescent bracket 11, and the window is locked or unlocked.

  The crescent lock 1 is provided with an anti-hanging function that prevents the operation lever 6 of the crescent lock 1 from rotating in the locking direction except when the indoor shoji and the outdoor shoji are both closed. That is, as shown in FIG. 2 (A), unless both the indoor and outdoor shojis are closed, the operation lever 6 is prevented from rotating at a rotation angle of 50 ° and cannot be rotated any further. It has become. Specifically, if the indoor and outdoor shojis are normally closed when the crescent 5 is rotated, the pivot side including the crescent 5 swings so that the one end side comes into contact with the crescent bracket 11. An actuating member is provided, and the operation lever 6 portion is biased and held toward the crescent 5 side, and a linear groove that engages with a protrusion 7b formed on the other end side of the actuating member 7. 8b is formed, and the sliding contact portions 3c and 3d in which the front end portion of the hanging prevention member 8 is in sliding contact with the base member 3 are formed, and the sliding contact portion 3c, An engaging step portion 3e is formed in the middle portion of 3d to engage the tip of the emptying prevention member 8.

  Hereinafter, the structure will be described in detail for each member, and the operating state will be described in detail.

  First, as shown in FIGS. 3 and 4, the base member 3 is a cubic member that is long in the vertical direction, and includes a base portion 3A and a boss portion 3B. The base portion 3A is formed with screw holes 3a at the upper and lower portions, respectively, and is fixed to the summon of the indoor shoji with screws or the like. The boss portion 3B is substantially circular at a portion constituting a pedestal surface to which the crescent 5 is rotatably attached, is formed higher than the base portion 3A, and the operation lever 6 is rotated at the center. A shaft hole 3b through which the shaft 4 is inserted is formed.

  A first sliding contact portion 3c and a second sliding contact portion 3d are formed around the boss portion 3B. Each of the first and second sliding contact portions 3c and 3d has a shape in which the peripheral portion is cut out in an L-shaped cross section, and the engagement step portion is in the middle even if the size of the L-shaped cutout is large or small. 3e is substantially continuous. Specifically, the first slidable contact portion 3c is a slidable contact portion having a relatively large notch dimension formed from a substantially lower end position to a predetermined rotation range of the operation lever 6, and at its end portion. Is formed with an engaging step 3e with which the tip of the emptying prevention member 8 is engaged. The second sliding contact portion 3d is a sliding contact portion formed as a relatively small notch dimension in a range from the engagement step portion 3e to the substantially upper end portion of the boss portion 3B. Here, the engaging step 3e engages the tip of the anti-hanging member 8 to prevent the operation lever 6 from rotating, or engages the tip of the anti-hanging member 8 with the acting force of the operating member 7. It plays an important function of allowing the operation lever 6 to rotate without matching.

  In the present embodiment, the first and second slidable contact portions 3c and 3d are formed as notched grooves having an L-shaped cross section at the peripheral portion. If it exists, it may be a notch groove such as a groove having a concave cross section.

  Next, as shown in detail in FIGS. 5 and 6, the operation lever 6 is a member in which a rotation shaft 4 is integrally provided at a rotation center side portion, and a concave shape is formed on the inner surface side thereof. A space is formed. This space is formed in a range including the first installation space 6A of the anti-hanging member 8 formed as a cubic space long in the vertical direction and the rotation shaft 4 continuously to the first installation space 6A. And the second installation space 6B of the actuating member 7. Further, a swing shaft hole 6a for swingably supporting the operating member 7 is formed in the second installation space 6B, and a through hole formed in the crescent 5 is adjacent to the rotation shaft 4. 5b (see FIG. 3) is engaged, and the operating lever 6 is formed with a protrusion 6b for rotating the crescent 5 synchronously with the rotation.

  As shown in detail in FIG. 7, the emptying prevention member 8 installed in the first installation space 6 </ b> A has a spring installation hole 8 a formed on the lower side and an operating member on the tip side. A linear groove 8b that engages with the projection 7b of the first member 7 and a first sliding contact portion 8c that engages with the first and second sliding contact portions 3c and 3d of the base member 3; Two sliding contact engaging portions 8d are formed. As shown in FIG. 10C, the first sliding contact portion 8c is an engagement portion formed in an arc shape so as to be aligned with the first sliding contact portion 3c of the boss portion 3B, and the boss portion 3B. In the second sliding contact portion 3d, the first sliding contact engaging portion 8c and the second sliding contact engaging portion 8d are in sliding contact with each other. The linear groove 8b is formed along the member width direction that is tangential to the virtual circle (rotation direction) centering on the rotation shaft 4.

  On the other hand, as shown in detail in FIG. 8, the actuating member 7 is a flat plate-like member having a substantially square shape, and has a swinging shaft 7 a formed in an intermediate portion on one side and the other side. A protrusion 7b that engages with the linear groove 8b of the anti-hanging member 8 is formed at the lower end on the side. Further, a contact portion 7c with the crescent bracket is formed at the upper end portion. In addition, although the said contact part 7c was bent and formed in the L-shape, it may be a flat plate.

  As shown in FIG. 5, the operation lever 6, the operation member 7, and the anti-hanging member 8 are assembled with respect to the second installation space 6 </ b> B portion of the operation lever 6 by moving the swing shaft 7 a of the operation member 7 to the second position. While being installed in the position adjacent to the rotating shaft 4 so as to be fitted into the swinging shaft hole 6a formed in the installation space 6B, the emptying prevention member 8 has a spring member 9 provided inside the spring installation hole 8a. Is installed in the first installation space 6A. Finally, the cover material 10 having a U-shaped cross section is fitted into the first installation section 6 </ b> A while surrounding the empty hanging prevention member 8. The emptying prevention member 8 is always urged toward the crescent 5 side by the elastic force of the spring member 9.

  As shown in FIG. 3, the crescent 5 and the base member 3 are assembled by inserting the rotating shaft 4 of the operation lever 6 into the shaft hole 5 a of the crescent 5, and the protrusion formed on the operation lever 6. By fitting 6b into a through hole 5b formed in the crescent 5, the crescent 5 is rotated integrally with the operation lever 6. When the crescent 5 is mounted, the crescent 5 is inserted into the shaft hole 3b of the base member 3 so that it cannot be removed on the back side. In this assembled state, the sliding contact engaging portions 8c and 8d of the anti-hanging member 8 are engaged with the first sliding contact portion 3c or the second sliding contact portion 3d of the boss portion 3B.

  Next, the operating state of the crescent lock 1 will be described with reference to FIGS. 9 and 10. 9 shows an operation diagram when locking is possible because both the indoor shoji and the outdoor shoji are closed, and FIG. 10 shows that the indoor shoji and / or the outdoor shoji is opened. The operation diagram when it is impossible is shown. In FIG. 9, for the convenience of explanation, the amount of movement of the emptying prevention member 8 is shown together with the rotation angle of the operation lever 6 by way of example.

<Shoji shoji closed (locking possible)>
FIG. 9A shows an unlocked state (see FIG. 1) in which the operation lever 6 faces downward. In this case, since the indoor shoji and the outdoor shoji are both closed, the crescent metal fitting 11 is positioned at a position facing the crescent operating member 7.

  In this state, when the operation lever 6 is gradually rotated, the contact portion 7c of the operating member 7 contacts the crescent bracket 11 as shown in FIG. 9B. Even if the abutting portion 7 c abuts on the crescent bracket 11, the projection 7 b of the operating member 7 slides in the linear groove 8 b formed in the emptying prevention member 8. Rotation is allowed. Thereafter, when the operation lever 6 is continuously rotated, the operating member 7 is slightly swung while the emptying preventing member 8 is gradually pushed against the urging force, and the rotation angle 50 in FIG. At the time of °, the boss 3B gets over the engaging step 3e. Further, the emptying prevention member 8 is gradually pushed against the urging force, and the actuating member 7 is gradually swung in the upright direction with the rotation of the crescent 5 and is separated from the crescent bracket 11. The crescent receptacle 11 is ridden without contacting the crescent receptacle 11. Finally, the operation lever 6 is rotated 180 °, and locking is completed in the state shown in FIG. 9 (G).

<Shoji door open (locking disabled)>
On the other hand, as shown in FIG. 10 (A), when the indoor shoji and / or the outdoor shoji are in an open state, locking is attempted when the crescent bracket 11 is not present at the crescent facing position. As shown in FIG. 10 (B), the actuating member 7 does not abut against the crescent bracket 11, and the emptying preventing member 8 is not pushed against the urging force. C), the first sliding contact portion 8c of the anti-hanging member 8 is rotated while the first sliding contact portion 3c of the boss portion 3B is in sliding contact with the first sliding contact portion 3c. If it collides with the engagement step 3e at the end point, the operation lever 6 is prevented from further rotation, and thus cannot be locked.

[Other examples]
(1) Although the example in which the rotation prevention angle of the operation lever 6 is 50 ° is shown in the above embodiment, this angle can be arbitrarily set within a certain range of width. In addition, although the emptying prevention member 8 is pushed in by 2.3 mm when the rotation angle is 50 °, the pushing distance and the like can be arbitrarily set within a predetermined width.

1 shows a crescent lock 1 according to the present invention, in which (A) is a side view, (B) is a front view, and (C) is a plan view. (A) is a front view showing a rotation prevention state, (B) is a front view showing a locked state. 1 is an exploded view of a crescent tablet 1. FIG. The base member 3 is shown, (A) is a left side view, (B) is a front view, (C) is a right side view, and (D) is a plan view. It is an exploded view (partial assembly) of the operation lever 6 side part. The operation lever 6 is shown. (A) is a back view, (B) is a side view, and (C) is a front view. FIG. 5A is a front view and FIG. 5B is a side view showing the emptying prevention member 8. The operation member 7 is shown, (A) is a left side view, (B) is a front view, and (C) is a plan view. It is an operation figure (A)-(G) of a shoji closed state (locking possible state). It is an operation | movement figure (A)-(C) of a shoji open state (locking impossible state). It is a perspective view which shows the conventional crescent lock.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Crescent lock, 2 ... Locking side metal fitting, 3 ... Base member, 4 ... Rotating shaft, 5 ... Crescent, 6 ... Operation lever, 6A ... 1st installation space, 6B ... 2nd installation space, 6a ... Swing axis Hole, 6b ... Projection, 7 ... Actuating member, 7a ... Oscillating shaft, 7b ... Projection, 7c ... Abutment, 8 ... Emptying prevention member, 8a ... Spring installation hole, 8b ... Linear groove, 8c ... 1st sliding contact engaging part, 8d ... 2nd sliding contact engaging part, 9 ... Spring material, 10 ... Cover material

Claims (4)

A lock member having a base member fixed to the indoor shoji side, a crescent pivotally attached to the base member, and an operation lever for rotating the crescent, and the crescent fixed to the outdoor shoji side In the crescent lock consisting of a crescent bracket having a hook part for engaging
If the indoor shoji and the outdoor shoji are normally closed during the turning operation of the crescent on the turning side including the crescent, an operation member is provided so as to be swingable so that one end side contacts the crescent receiving bracket, The operation lever portion is provided with an anti-hanging member that is biased and held toward the crescent side and has a linear groove that engages with a protrusion formed on the other end side of the operating member, and An engaging step portion that forms a sliding contact portion in which the tip portion of the anti-hanging member slides on the base member and engages the tip portion of the anti-hanging member in an intermediate portion of the sliding contact portion. Forming,
If the indoor and outdoor shojis are normally closed during the turning operation of the crescent, the one end side of the actuating member comes into contact with the crescent bracket, and the operation lever is subsequently rotated to form the empty hanging prevention member. When the protrusion of the operating member slides in the linear groove, the operation lever is allowed to rotate, the emptying prevention member is pushed against the urging force, and the operating member is shaken. By moving, the tip of the anti-hanging member is rotated without being engaged with the engagement step portion, and if the indoor and outdoor shojis are not normally closed, A crescent lock characterized in that further rotation is prevented by engaging the tip of the anti-hanging member with the engagement step portion.   The crescent lock according to claim 1, wherein the linear groove of the anti-hanging member is formed in a tangential direction with respect to the rotation direction.   The crescent lock according to claim 1, wherein the operating member and the anti-hanging member are installed in a hollow space formed on the inner surface side of the operation lever. The slidable contact portion is a notch groove formed in the peripheral portion of the boss portion serving as the crescent installation seating surface of the base member, and a first slid with a relatively large notch size formed along the rotation direction from the lower end side. The engagement step portion is formed at a terminal end of the first sliding contact portion, and includes a contact portion and a second sliding contact portion having a relatively small notch dimension that is continuous with the contact portion. Crescent tablet according to crab.

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