JP2005188117A - Flush bolt device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flush bolt device which is available irrespective of whether a gap between a floor surface and a door is large or small, provides a good operating feeling to the operator, is high in general applicability, and good in workability. <P>SOLUTION: The flush bolt device 1 has a lock bar 15 supported in a manner vertically movable with respect to a base body 10 at a predetermined stroke S, and a lower end of the lock bar is engaged with a recess 21 formed in the floor surface 20, to thereby make a child door 2 immovable. The lock bar 15 is held at least one intermediate location that is at some midpoint of the stroke S, and halted at three halting locations or more. The halting locations include an ascending location 14A, a descending location 14B, and the intermediate location 14C between the same, for instance. When the lock bar 15 is held at the intermediate location, a spring piece 16 is engaged with an engaging portion 13b. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a French dropping device for fixing a child door such as a parent-child door, and more particularly, a lock bar or the like that enters a recess formed in a floor surface by increasing the vertical stroke of a drop bar or a lock bar. It relates to a French dropping device that can be stopped at the position.

  Conventionally, in this type of French drop, a rod-shaped locking member is arranged to be movable up and down in a case embedded in a lower part of a vertical shaft in a door body, and at least a tip portion of the locking member is formed in a non-circular shape in cross section. In addition, a spiral strip extending in the axial direction is formed on the peripheral surface, and when the locking member is moved up and down by fitting with the spiral strip in the case, the locking member is rotated about the axis. A guide is provided (for example, refer to Patent Document 1).

JP 7-319443 A

  By the way, the French drop of the said structure is comprised so that the drop stick which is a locking member can be stopped in two positions, upper and lower. That is, the drop bar is housed in the door at the raised position, and the door is in a swingable state, and at the lowered position, the door enters the recess formed on the floor surface to fix the door. Due to the revision of the Building Standards Act of July 2003, the doors, etc., for fixing the French drop having such a structure need to be ventilated for 24 hours in the residence. The air passage may be secured by widening the gap.

  In this case, the height of the gap under the door is increased in order to secure the air passage, and the dropping rod of the French drop requires a large stroke. When a French drop with a large stroke of the drop bar is attached to a door where the clearance between the lower surface of the door and the floor surface is normal, the drop bar hits the bottom of the concave portion of the floor surface with a short stroke, and is located in the middle of the vertical stroke. It stops at. For this reason, there was no click feeling at the stop position of the dropping stick, and the operability was uneasy.

  The present invention has been made in view of such problems, and the object of the present invention is to be able to fix to a door having a large gap between the lower end surface of the door and the floor surface, and to move up and down strokes. It is an object of the present invention to provide a French dropping device that has a good operation feeling even when a large French dropping device is fixed to a door with a small gap and the lock bar is stopped halfway and does not fall because the lock bar is held.

  In order to achieve the above object, a French dropping device according to the present invention includes a lock bar supported so as to be movable up and down with a predetermined stroke with respect to a base body, and a lower end of the lock bar is formed on a floor surface or the like. The lock bar is configured to be engaged with the recessed portion to fix the door or the like, and the lock bar is configured to be held at at least one intermediate position during the stroke. That is, it is configured to be able to stop at three stop positions, that is, an ascending position at the upper end of the stroke, a descending position at the lower end of the stroke, and an intermediate position therebetween, and the lock bar is held at the intermediate position.

  In the French dropping device of the present invention configured as described above, the lock bar is stopped and held at at least one stop position in the middle of the vertical stroke, so that there is a gap between the lower end surface of the door and the floor surface. When it is larger, the lock bar is lowered to the lowered position, and when the gap is small, the lock bar is lowered to the intermediate position to fix the door or the like. Since the lock bar is held by a spring or the like at an intermediate position, the feeling of operation is good, and it is not necessary to change the French dropping device due to the size of the gap, so that there is no feeling of uneasiness in operation.

  As a preferred specific aspect of the French dropping device according to the present invention, the lock bar is held at any one of the stop positions of the intermediate position, the rising position of the upper end of the stroke, and the lowering position of the lower end of the stroke. It is characterized by that. In other words, the lock bar is positioned and held by a long hole that determines the up / down stroke at the ascending position and the descending position, and is held at the intermediate position. A feeling can be improved.

  Furthermore, as another preferred specific embodiment of the French dropping device according to the present invention, one end of a spring is fixed to the base body, and the lock bar is engaged with each of the raised position, the intermediate position, and the lowered position. The holding state is formed by selectively engaging the other end of the spring with these engaging portions. According to this configuration, the lock bar can be reliably stopped and held at any one of the three positions with a simple configuration, and the operation feeling is also preferable.

  According to the present invention, a French dropping device having a large vertical stroke can be used without anxiety or discomfort even when the gap between the lower surface of the door and the floor surface is large or small, and there is a feeling of clicking during operation. A feeling is good and a door etc. can be fixed reliably. For this reason, while being able to improve the versatility of a French dropping device, workability can be improved.

  Hereinafter, an embodiment of a French dropping device according to the present invention will be described in detail with reference to the drawings. 1A and 1B show a French dropping device according to the present embodiment, in which FIG. 1A is a front view, FIG. 1B is a partially broken side view thereof, FIG. 1C is a rear view thereof, and FIG. FIG. 2 and FIG. 2 are cross-sectional views showing the operating state.

  1 and 2, a French dropping device 1 is a fixing device that normally fixes a child door of a parent-child door and opens it when necessary, for example, and swings opposite to the hinge mounting portion of the child door 2. Fixed to the upper and lower corners of the side. The French dropping device 1 includes a lock bar 15 that is supported by a predetermined stroke S so as to move up and down with respect to a base body 10 formed of a metal plate having a substantially L-shaped cross section. The lock bar 15 can be stopped at the raised position and the lowered position, and can be stopped at at least one intermediate stop position.

  The vertical part 10a of the base body 10 is long and the horizontal part 10b is short, and the French dropping device 1 is mounted so that the right-angled corners are aligned with the upper and lower corners of the swinging side of the door. A mounting hole 10c is formed in the upper portion of the vertical portion 10a of the base body 10 and an end portion of the horizontal portion 10b for the screw 3 to be attached to the child door 2.

  A vertically long oval step portion 11 is formed on the front side of the vertical portion 10 a of the base body 10, and a vertically long oblong hole 12 is formed at the center of the step portion 11. A vertically long strip-like slider 13 is located on the back surface of the stepped portion 11. The slider 13 has a flat upper portion, three engaging portions 13a, 13b, and 13c are formed from an intermediate portion to a lower portion, and a projecting body 14 that enters the concave portion 21 of the floor surface 20 is connected to the lower end. The slider 13 and the protrusion 14 constitute a lock bar 15 that fixes the child door 2.

  The projecting body 14 connected to the lower end of the slider 13 is formed by a cylindrical shaft. In this embodiment, the tip of the lower end of the slider 13 is inserted into a hole in the upper opening of the projecting body 14 and fixed by welding. Has been. The projecting body 14 is loosely fitted in a restriction hole 10d in the horizontal portion 10b of the base body 10 so as to be movable up and down. The connection between the slider 13 and the protruding body 14 is not limited to the example in which the tip is inserted and welded as described above, but may be fixed by simple butt welding, fixed by screwing or caulking, or the like.

  A positioning spring piece 16 is sandwiched between the flat portion of the slider 13 and the back surface of the step portion, and the operation piece 17 located in the step portion 11 from the front side passes through the long hole 12 and the flat portion of the slider 13. It is fixed to. The plate-like spring piece 16 is formed with a through hole having substantially the same shape as the long hole 12, and claw portions erected on the front side are engaged with the upper and lower edges of the long hole to position the spring piece 16. At the same time, the operation piece 17 can be moved up and down. The spring piece 16 has a projecting portion 16a that engages with any of the engaging portions 13a, 13b, and 13c of the slider 13 at the lower end, and has a function of holding the slider 13 in a plurality of positions, for example, three positions. Have. The spring piece 16 may be fixed to the back surface of the base body 10 by welding or the like.

  The horizontal width of the operation piece 17 is set larger than the horizontal width of the long hole 12, and the slider 13 is detached from the base plate 10 by engaging both end portions of the operation piece 17 with the side wall of the long hole 12. Is preventing. Therefore, the stroke S of the slider 13 is determined by moving the operation piece 17 up and down within the long hole 12. This stroke S is the protruding dimension (protrusion amount) B of the lock bar 15. The French dropping device 1 of the present embodiment assumes that the gap between the lower end of the child door and the floor surface is large, and this stroke S is set larger than a general stroke.

  With this configuration, the projecting body 14 at the lower end of the lock bar 15 has an ascending position 14A where the tip of the projecting body is positioned within the restricting hole 10d or slightly projects, and a descending position 14B when lowered by the stroke S. The intermediate position 14C can be stopped. The slider 13 has three engaging portions 13a, 13b, and 13c corresponding to the three positions, and the protrusion 16a at the tip of the spring piece 16 is selectively engaged with one of the engaging portions. By combining, the slider 13 is selectively held at one of three positions.

  The protruding amount of the protruding body 14 at the intermediate position 14C is A, and the protruding amount at the lowered position 14B is B. The projecting body 14 in FIG. 1a shows an ascending position, an upper two-dot chain line position 14C is an intermediate position, and a lower two-dot chain line position 14B is a lowered position. At the upper two-dot chain line position 14A, the protrusion 16a of the spring piece 16 is positioned at the engaging part 13a, and at the lower two-dot chain line position 14B, the protrusion 16a of the spring piece 16 is positioned at the engaging part 13c. At the two-dot chain line position 14C, the protrusion 16a of the spring piece 16 is positioned at the engaging portion 13b. In this way, the lock bar 15 is held and positioned by the protrusion 16a of the spring piece 16 at the three stop positions.

  The French dropping device 1 according to the present embodiment has, for example, a recessed portion 4 formed at the lower end of the swing side of the child door 2, and the fixing screw 3 is inserted in a state where the slider 13 and the protruding body 14 are inserted into the recessed portion. Insert and fix in the mounting holes 10c, 10c. The French dropping device 1 includes a lock bar 15 supported so as to move up and down with a stroke S with respect to the base body 10, and a protrusion 14 at the lower end of the lock bar 15 enters a recess 21 formed in the floor surface 20. The child door 2 is fixed by engaging and locking. The concave portion 21 is preferably fixed by a reverse cap-shaped receiving member 22 obtained by pressing a metal plate material. The receiving member 22 is not limited to a pressed metal plate material, and may be formed of a plastic molded body or a metal casting.

  The operation of the French dropping apparatus 1 of the present embodiment configured as described above will be described. When the child door 2 is fixed by the French dropping device 1, when the operation piece 17 in the step portion 11 is pressed downward from the raised position in FIG. 1 and lowered to the lower end of the long hole 12, as shown in FIG. The slider 13 is lowered together with the operation piece 17, the projecting body 14 connected to the lower end of the slider reaches the lowered position 14 </ b> B, enters the concave portion 21 of the floor surface 20, and the child door 2 is fixed. That is, the lock bar 15 is lowered by the lowering operation of the operation piece 17, and the protrusion 14 at the lower end moves by the protrusion amount B and enters the recess 21.

  The stroke S of the slider 13 of the French dropping device 1 is determined in advance as described above. When the gap H between the floor surface 20 and the lower end surface of the child door 2 is large as shown in FIG. The protrusion B deeply enters the recess 21 to stabilize the engagement state, and the protrusion 14 does not come off the recess 21 even if an impact is applied to the child door 2. In the state of FIG. 2 a, the protrusion 16 a of the spring piece 16 is engaged and held in the engagement portion 13 c above the slider 13 and is stable.

  However, as shown in FIG. 2b, when the gap h between the child door 2 and the floor surface 20 is small, the projecting body 14 reaches the bottom surface of the recess 21 and stops halfway. 1 has an intermediate stop position in the middle of the stroke S, and can lock the lock bar 15 in a stable state. In other words, the operating piece 17 can be lowered and stopped at a position where the protrusion 16 a of the spring piece 16 engages with the intermediate engaging portion 13 b of the slider 13. At the intermediate position 14C, the protrusion 14 of the lock bar 15 enters the recess 21 in an optimal state, and the protrusion 14 engages with the recess 21 in an optimal state.

  In particular, due to the amendment of the Building Standards Act, even when room ventilation is required and the gap between the lower end surface of the child door 2 and the floor surface 20 is large, the engagement depth can be increased with a large stroke S and reliable fixing can be achieved. For example, when the child door 2 comes into contact with the door portion when passing through the door portion with luggage or the like, the child door 2 is unfixed and the projecting body 14 escapes from the concave portion 21 of the floor surface 20, and the floor surface 20 can prevent the protrusion 14 from being damaged.

  In addition, the lock bar 15 provided in the French dropping device 1 of the present embodiment has two levels of protrusions of the protrusion 14 at the lower end, and either one of the two levels of protrusions according to the gap between the floor surface and the door lower surface. Since the child door 2 is fixed by the protruding amount, as shown in FIG. 2b, the engagement depth with the concave portion 21 of the floor surface 20 can be optimized even when the gap h is small, and the fixed state It can be stabilized. As a result, even if an impact is applied to the door or the like, the protruding body 14 is prevented from being detached from the recess 21 of the floor surface 20 and damaging the floor material. The stop at the intermediate position has a click feeling during operation because the protrusion 16a of the spring piece 16 engages and holds the intermediate engagement portion 13b of the slider 13, and anxiety when the intermediate position stops. Does not occur at all. Even at the raised position 14A and the lowered position 14B, the lock bar 15 is held and stabilized by the protrusions 16a of the spring pieces 16 at the engaging portions 13a and 13c, so that the operational feeling is improved.

  Thus, the French dropping device of the present invention can be installed even when the gap between the door lower end surface and the floor surface is different. When the gap is large, it is lowered with the full stroke, and when the gap is small, the intermediate position is set. It can be lowered with a stroke up to. Since the lock bar 15 can be held at the intermediate position, the operation feeling is good and the operation is stable, and the anxiety and discomfort caused by the stop at the intermediate position can be wiped out. For this reason, the versatility of the French dropping device can be improved, and the construction can be facilitated.

  Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, although the example which attached the French dropping device to the child door of the parent-child door was shown, you may attach to one of the double doors of the same shape. In addition, although the lock bar is configured with the slider and the protrusion connected to the lower end of the slider, the lock bar may be configured with a single round bar-shaped lock bar. Although the intermediate position is an intermediate position between the raised position and the lowered position, it is needless to say that the distance may not be equal.

  Further, although an example in which the lock bar has three stop positions has been shown, it may have four or more stop positions. For example, in the case of four stages, it is preferable that two engaging portions of the slider are formed at least in the middle, and four including the upper and lower portions are formed. Although an example of an engagement portion having a semicircular cross section is shown as the engagement portion that holds the slider, an engagement portion having a V-shaped cross section may be used and can be changed as appropriate. Moreover, as a structure which engages with an engaging part and hold | maintains, a spherical protrusion, the structure which presses a steel ball with a spring, etc. can be used suitably.

  As an application example of the present invention, this French dropping device can be used to attach to one side of a gate, and it can be applied to an external use. In the case of a gate, it is necessary to form a recess on the mortar surface, not on the floor surface.

1 shows an embodiment of a French dropping device according to the present invention, (a) is a front view, (b) is a side view with a part broken away, (c) is a rear view, and (d) is a bottom view of (b). . It is operation | movement explanatory drawing of the French dropping apparatus of FIG. 1, (a) is sectional drawing of the fixed state when a clearance gap is large, (b) is sectional drawing of the fixed state when a clearance gap is small.

Explanation of symbols

  1: French dropping device, 10: base body, 12: long hole, 13: slider, 13a, 13b, 13c: engaging portion, 14: protrusion, 14A: stop position (up position), 14B: stop position (down position) Position), 14C: stop position (intermediate position), 15: lock bar, 16: spring piece (holding means), 17: operation piece, 20: floor surface, 21: recess, S: stroke, A: protrusion amount (intermediate) Position), B: protrusion amount (lowering position)

Claims (3)

A French dropping device having a lock bar supported so as to be movable up and down with a predetermined stroke with respect to a base body, and fixing a door or the like by engaging a lower end portion of the lock bar with a recess formed in a floor surface or the like Because
The French dropping device, wherein the lock bar is configured to be held at at least one intermediate position in the middle of the stroke.   2. The French dropping device according to claim 1, wherein the lock bar is held at any one of the stop position of the intermediate position, the rising position of the upper end of the stroke, and the lowering position of the lower end of the stroke.   One end of a spring is fixed to the base body, and an engaging portion is formed on the lock bar corresponding to the raised position, intermediate position, and lowered position, and the other end of the spring is selectively used as the engaging portion. The French dropping device according to claim 2, wherein the holding state is established by engaging with a frame.

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