JP2006118283A - Flush bolt - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the generation of an uncomfortable metallic sound, and to simply mount the same flush bolt as it is and use it even to doors having different opening heights with a floor face. <P>SOLUTION: A plurality of engaging holes 24 and 25 are formed to a lock rod 11 at intervals in the longitudinal direction of a sliding bar 19 while an engaging projection 30 capable of being engaged with the engaging holes is formed to a pushing plate section 12a for an urging spring 12. The lock rod 11 is slid and the engaging projection 30 is engaged with either of the engaging holes 24 and 25 in response to the opening heights between the door and the floor face when the door is locked. The place of the locking height of the lock rod 11 to a mounting plate 10 is constituted in an adjustable manner at multistages while a steady member 15 composed of a sound absorbing material is fitted to a shaft guide hole 13 in the mounting plate 10. A lock pin 20 is fitted into the shaft guide hole 13 through the steady member. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention is a door lock that is used by attaching to a door that is less frequently opened and closed, and in particular, when the door is locked, the lock bar is lowered and its lower end is fitted into a receiving hole installed on the floor surface side. It relates to a French drop that regulates the opening and closing of doors.

  Conventionally, this type of French drop is usually made of metal and has an elongated L-plate shape for use with the hinged door 1 attached to the lower edge corner of the mouth end surface 1a as shown in FIG. The mounting plate 2 is provided, and a lock rod 3 is connected to the mounting plate 2 so as to be movable up and down. The mounting plate 2 is provided with a shaft guide hole 4 in the guide plate portion 2a at the lower end in the figure, and a guide that is partly recessed at the upper end side of the vertically long mounting plate portion 2b and protrudes toward the guide plate portion 2a. A convex surface 2c is formed, and a vertically-long rectangular movement restriction hole 5 is provided on the guide convex surface 2c. On the other hand, the lock bar 3 is formed into a shaft having a fixed length as a whole by an elongated plate-like slide bar 3a and a lock pin 3b on the lower end side in the drawing. Reference numeral 6 in the figure denotes an operation knob fixed to the slide bar 3 a of the lock bar 3, which is engaged with the movement restricting hole 5 to connect the lock bar 3 to the mounting plate 2. Reference numeral 7 in the drawing is an urging spring made of a leaf spring, and in the state where the slide bar 3a is pressed against the guide convex surface 2c by the spring urging force, the lock bar 3 is moved to the unlocking height position in the movement restricting hole 5. It is attached to the mounting plate 2 so that it can slide up and down between the lock height positions. In such a French drop, the lock rod 3 side is fitted into a mounting recess formed in the end face 1a and the mounting plate 2 is screwed to the door 1.

When the door 1 is locked using this conventional French drop, the operation knob 6 is picked, the lock bar 3 is lowered, and the lock pin 3b is embedded in the floor surface 8 side through the shaft guide hole 4 The door 1 is restricted from being opened and closed by being fitted into the 9 receiving holes 9a.
Japanese Utility Model Publication No. 60-83168

  Recently, health problems such as sick house syndrome have become a major problem due to indoor air pollution caused by formaldehyde and the like emitted from building materials and furniture in houses. Therefore, in recent houses and the like, the door 1 may be installed with a relatively large gap (dust) between the door 1 and the floor surface 8 in consideration of indoor ventilation.

  However, since the conventional French drop has a structure having a lock rod 3 of a certain length, as shown by a chain line in the figure, it is intended to be attached as it is to the door 1 having a large gap with the floor surface 8. In this case, even if the lock rod 3 is lowered to the lock height position, the lock pin 3b does not reach the receiving hole 9a, so that it cannot be used very much. Therefore, in order to be able to be used by being attached to the door 1 having such a large gap between the floor surface 8 and the floor surface 8, it can be used correspondingly to the height h of the gap between the door 1 and the floor surface 8. There was a problem that there was no choice but to prepare various kinds of French drop with a special lock rod.

  Further, in the case of a conventional French drop, for example, when the door 1 is in a locked state where the lock pin 3b of the lock bar 3 is fitted to the tsubo support 9, if the door 1 moves due to wind pressure or impact, it is fixed to the door 1. There is a problem that the lock rod 3 swings and collides with the mounting plate 2 to generate an unpleasant metal sound that causes troublesome noise.

  Therefore, an object of the present invention is to prevent unpleasant metal noises from being generated and to allow the same French drop to be easily attached and used as it is for doors having different gap heights between floors. There is to do.

  Therefore, according to the first aspect of the present invention, for example, as shown in the embodiment shown below, the mounting plate 10 having the shaft guide hole 13 formed in the guide plate portion 10a at the lower end, and the slide bar in the shaft guide hole 13 are provided. A lock pin 11 which is attached to the mounting plate 10 so as to be slidable up and down between the unlocking height position and the locking height position by fitting a lock pin 20 at the lower end of the 19; the slide bar 19 and the mounting plate When the door is locked, the lock bar 11 is lowered to the lock height position when the door is locked. The lock pin 20 is fitted into a receiving hole 37a installed on the floor surface F side through the shaft guide hole 13 so as to restrict the opening and closing of the door D to the French drop A. The lock bar 11 is provided with a plurality of engagement holes 24 and 25 at intervals in the length direction of the slide bar 19, while the pressing plate 12 a of the urging spring 12 has the engagement plate 12 a. Engagement protrusions 30 that can be engaged with the joint holes 24 and 25 are provided, and when the door is locked, the lock rod 11 is slid according to the gap heights h1 and h2 between the door D and the floor surface F to engage the engagement. The engagement protrusion 30 is engaged with either one of the holes 24 and 25 so that the lock height position of the lock rod 11 with respect to the attachment plate 10 can be adjusted in multiple stages. The shaft guide hole 13 is fitted with a steady member 15 made of a sound deadening material, and the lock pin 20 is fitted into the shaft guide hole 13 through the steady member 15.

  According to the first aspect of the present invention, when the door is locked, the lock rod is slid according to the clearance height between the door and the floor surface, and the engagement protrusion of the biasing spring is inserted into one of the plurality of engagement holes. The lock height position of the lock rod can be adjusted in multiple stages simply by engaging the same, so that the same French drop can be applied to doors with different gap heights from the floor surface. It can be used as it is.

  In addition, even when the door is locked due to wind pressure or impact, for example, when the door is locked, the lock rod holds the lock pin with the anti-sway member of the silencer and regulates the swinging movement. It is possible to prevent an unpleasant metal sound that causes noise between the made mounting plate and the lock rod.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 and FIG. 2 are exploded perspective views showing a French drop as an example of the present invention as seen from different angles, and FIG. 3 is a longitudinal sectional view showing an assembled state. The French drop A in the illustrated example has a configuration including a metal mounting plate 10, a lock rod 11 connected to the mounting plate 10, and a biasing spring 12 made of a plate spring.

  The mounting plate 10 is formed by bending an elongated metal plate into an L shape, providing a shaft guide hole 13 in the lower guide plate portion 10a in the drawing, and partially denting the upper end of the vertically long mounting plate portion 10b. A guide convex surface 10c projecting toward the opposite guide plate portion 10a is formed. The guide convex surface 10c is provided with a vertically long rectangular movement restriction hole 14 that determines a stroke in which the lock rod 11 slides up and down. The shaft guide hole 13 has a round center hole portion 13a whose hole diameter is slightly larger than that of the lock pin 20 of the lock rod 11, and a pair of rotation restricting hole portions opened in a symmetric trapezoidal shape at the periphery of the center hole portion 13a. 13b and 13b. The mounting plate 10 has a structure in which a steadying member 15 as a silencer is attached to the guide plate portion 10a having the shaft guide hole 13.

  The steady rest member 15 is integrally molded using a resin silencer in the illustrated example, and has a main body plate portion 16 that has a substantially rectangular plate shape according to the outer shape of the guide plate portion 10a, and a single side surface of the main body plate portion 16. The fitting projection 17 is formed in a convex shape in accordance with the hole shape of the shaft guide hole 13. The body plate portion 16 is formed by forming a shaft insertion hole 18 having a diameter substantially the same as that of the lock pin 20 at a center position corresponding to the shaft guide hole 13. The fitting projection 17 is fitted in accordance with the center hole portion 13a of the shaft guide hole 13 and the annular portion 17a projecting in a ring shape that can be fitted thereto, and the hole shape of the fitting hole portion 13b. It consists of a pair of anti-rotation parts 17b protruding in an outer shape that can be mated. Then, the mounting plate 10 is fitted with the fitting protrusion 17 in the shaft guide hole 13, and the main body plate portion 16 is overlaid on the guide plate portion 10a to attach the steadying member 15.

  The lock bar 11 is assembled using a slide bar 19, a lock pin 20 that is fixed to the lower end of the slide bar 19, and an operation knob 21. The slide bar 19 includes an elongated support plate portion 19a and a connecting portion 19b bent into a U-shaped pipe shape on the lower end side in the drawing. The support plate 19a is provided with a small insertion hole 22 for the operation knob 21 near the upper end in the figure, and a round positioning hole 23 is provided on the lower end of the connecting portion 19b. In particular, the slide bar 19 has a round engagement hole similar to the positioning hole 23 between the small insertion hole 22 and the positioning hole 23 so as to correspond to gap heights h1 and h2 between the door D and the floor surface F to be described later. 24 and 25 are provided at intervals in the length direction. The lock pin 20 is a round bar, and the base end 20a on the upper side in the figure is formed into a one-step thin shaft, and a connecting portion 19b is caulked to the base end 20a to be fixed to the slide bar 19, thereby A lock rod 11 having a predetermined length is formed. The operation knob 21 is composed of a wide knob 21a, a locking step 21b formed so as to be able to be locked in the movement restricting hole 14 of the mounting plate 10, and a plug protrusion 21c at the tip. The convex portion 21 c is inserted into the small hole 22 and fixed to the slide bar 19.

  The urging spring 12 is provided with an elongated rectangular escape hole 28 corresponding to the movement restricting hole 14 near the upper end in the figure, while being bent into a mountain shape near the opposite lower end to form a pressing plate portion 12a at the lower end. Become. The escape holes 28 are provided with hooking claws 28a and 28a at the upper and lower hole edges in the drawing by partially bending them. A small mounting hole 29 is provided in the pressing plate portion 12 a, and the engagement protrusion 30 is fixed to the mounting hole 29. Similarly to the steadying member 15, the engagement protrusion 30 is formed into a hemispherical shape that can be engaged with the positioning hole 23 and the engagement holes 24, 25 using, for example, a resin silencer. And the fitting convex part 30a provided in the circular end surface is fitted in the attachment hole 29, the protrusion part is crushed, the engagement protrusion 30 is fixed to the pressing plate part 12a of the urging spring 12, and the upper bending convex part. It protrudes to the opposite side to 12b.

  The French drop A provided with the above components hooks the hooking claws 28a and 28a of the escape hole 28 on the upper and lower hole edges of the movement restricting hole 14, and the urging spring 12 is connected to the guide convex surface 10c of the mounting plate 10. Then, the pressing plate 12a is mounted with the engaging projection 30 facing outward. Then, the slide bar 19 of the lock rod 11 is overlapped on the biasing spring 12, the locking step portion 21 b of the operation knob 21 is locked to the movement restricting hole 14, and the insertion convex portion 21 c at the tip is connected to the slide bar 19. The insertion hole 22 is inserted through the escape hole 28 of the biasing spring 12. Then, the protruding portion of the insertion protrusion 21c is crushed, and the lock rod 11 is connected to the mounting plate 10 so as to be slidable up and down between the unlocking height position and the locking height position in the movement restricting hole 14, and dropped in France. Assemble A.

  Therefore, the French drop A slides the lock rod 11 and, as shown in FIG. 3, when the engagement protrusion 30 of the biasing spring 12 is engaged with the lowermost positioning hole 23, the distal end portion 20b of the lock pin 20 is engaged. Is fitted into the shaft guide hole 13 via the steady rest member 15, and the lock rod 11 is positioned and held at the unlocked height position. On the other hand, when the door is locked, which will be described later, the lock rod 11 is further slid down from the high unlocking position and lowered according to the different gap heights h1 and h2 between the door D and the floor surface F as shown in FIG. Then, when the engagement protrusion 30 is engaged with either of the engagement holes 24 and 25, the downward projecting length of the lock pin 20, that is, the lock height position of the lock rod 11 with respect to the mounting plate 10 is two steps up and down. It has come to be adjusted.

  In the present invention, when the French drop A is used by being attached to the main door 35 of the parent-child hinged door D as shown in FIG. 5, for example, it is fixed to the lower edge side corner of the end face 35a. At that time, the lock rod 11 side of the French drop A is fitted into the mounting recess 36 installed on the end face 35a, and both ends of the mounting plate 10 are screwed.

  And when operating the French drop A and locking the door D, check the gap between the door D and the floor surface F, as shown in FIG. 4, according to the gap height h1 and h2, The lock rod 11 is slid downward by picking the knob 21 a of the operation knob 21. Therefore, for example, as shown in FIG. 5A, when the gap between the door D and the floor F is a small height h1, the lock rod 11 is slid downward by one step against the biasing spring 12. . Then, the engagement protrusion 30 of the urging spring 12 engages with the lower engagement hole 24 of the lock rod 11, and the lock rod 11 is in the lock height position where the lock pin 20 protrudes one step from the unlocking height position. The positioning is maintained. And the front-end | tip part 20b of the lock pin 20 is fitted to the receiving hole 37a of the tread receptacle 37 embed | buried under the floor surface F side, the main door 35 is locked, and, thereby, the opening / closing of the door D from an outer side is controlled. .

  On the other hand, when the gap between the door D and the floor surface F is confirmed when the door is locked, the gap between the door D and the floor surface F has a height h2 that is one step larger as shown in FIG. In this case, the knob 21 a of the operation knob 21 is picked, and the same lock rod 11 is further slid downwardly against the biasing spring 12. Then, the engagement protrusion 30 of the urging spring 12 engages with the upper engagement hole 25, and the lock rod 11 is positioned and held at the lock height position where the lock pin 20 protrudes further downward. The front end portion 20 b of the lock pin 20 is fitted into the receiving hole 37 a of the tread receptacle 37 to lock the main door 35.

  On the contrary, when unlocking the door D in order to open the door D, the knob 21a of the operation knob 21 is picked and the lock bar 11 is slid upward one step against the biasing spring 12, As shown in FIG. 3, the engagement protrusion 30 is engaged with the lowermost positioning hole 23 to return to the original unlocking height position, and the lock pin 20 is separated from the receiving hole 37 a of the tread holder 37.

  By the way, the French drop A shown in the figure engages the engaging projections 30 of the resin silencer with the positioning holes 23 and the engaging holes 24 and 25 of the metal lock rod 11 as described above, and further the metal mounting plate 10. In this shaft guide hole 13, a metal lock pin 20 is fitted through a fitting projection 17 of a steady member 15 made of the same silencer. Therefore, for example, even when the door D moves due to wind pressure, impact, etc. when the door is locked, in the French drop A, the lock rod 11 swings while holding the lock pin 20 with the silencing member 15 of the silencer. Since the engaging projections 30 of the silencer are engaged with the engaging holes 24 and 25, noise is generated between the metal mounting plate 10 and the biasing spring 12 and the lock rod 10. It is possible to prevent the occurrence of unpleasant metallic noises that cause it.

  In the illustrated embodiment described above, the lock rod 11 provided for the French drop A has a configuration in which the slide bar 19 is provided with two engagement holes 24 and 25 in the longitudinal direction. However, in the present invention, three or more engagement holes are provided, and the lock height position of the lock rod with respect to the mounting plate can be finely adjusted in multiple stages by the number of the engagement positions, and the clearance height between the door and the floor surface can be adjusted. It can also be configured to more accurately adapt to the difference.

  Further, in the illustrated embodiment described above, the steadying member 15 is made of resin, but the material is not limited to resin, but has a noise reduction effect, such as rubber, wood, leather, etc. Also good.

  In addition, although the example at the time of attaching French drop A to a double door type door was demonstrated in the above illustrated embodiment, this invention can be applied to various doors besides a single door type door. Of course.

It is a disassembled perspective view which shows the French drop which is an example of this invention. It is a disassembled perspective view which shows a French drop | look from a different angle. It is a longitudinal cross-sectional view which shows a French drop in an assembly state. Shows the state where the door is locked with a lock bar according to different gap heights between the door and the floor, (A) shows the lock bar in the unlocked height position, and (B) shows the lock height position. It is a side view shown in the adjusted state. It is a perspective view which shows the state which attached the French drop to the hinged door. It is a longitudinal cross-sectional view which shows the conventional French drop.

Explanation of symbols

A French drop D Door F Floor height h1, h2 Clearance height 10 Mounting plate 11 Lock rod 12 Energizing spring 13 Shaft guide hole 15 Stabilizing member 19 Slide bar 20 Lock pin 24/25 Engagement hole 30 Engagement protrusion 37 Tsubo Receptacle 37a Receptacle hole

Claims (1)

A mounting plate with a shaft guide hole in the guide plate part at the lower end, and a lock pin at the lower end of the slide bar fitted into the shaft guide hole to move up and down between the unlocked height position and the lock height position. A lock bar that is slidably mounted on the mounting plate, and a biasing spring that is held between the slide bar and the mounting plate and presses the pressing plate portion at the lower end against the slide bar at all times, Sometimes, when the lock bar is lowered to the lock height position, the lock pin fits into a receiving hole installed on the floor side through the shaft guide hole to restrict the opening and closing of the door,
The lock bar is provided with a plurality of engagement holes at intervals in the length direction of the slide bar, while the pressing plate portion of the biasing spring is engageable with the engagement hole. Protrusions are provided, and when the door is locked, according to the height of the gap between the door and the floor surface, the lock rod is slid to engage the engagement protrusion with one of the engagement holes, The lock height of the lock bar is configured to be adjustable in multiple stages,
The mounting plate is formed by fitting a steadying member made of a sound deadening material into the shaft guide hole, and fitting the lock pin into the shaft guide hole through the steadying member. Drop.

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