JP2006283432A - Locking device and strike fitting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a locking device which can lock a swing door by fitting a dead bolt protruding from a swing door into a strike formed in a door frame with good accuracy at a stopping location. <P>SOLUTION: According to the structure of the locking device, a width y of an opening 81 of a strike fitting 8, that is in parallel with moving directions a, b of the swing door 1, is set larger than a width x of the dead bolt 51 of an electric lock 5 arranged in the swing door 1, that extends in the same direction. A surface of the opening 81, opposed to the swing door 1, is formed like a curved surface with a curvature similar to that of a moving orbit depicted by an edge of the swing door 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a locking device and a strike fitting for a swing door.

  A swing door is also called a free door, and is a hinged door that can be pushed and opened in both the front and rear directions and can be automatically closed by being hung by a free hinge or a floor hinge.

  In the case of locking such a swing door, there are known a locking structure using a dead bolt protruding in the horizontal direction with respect to the door and a locking structure using a locking rod protruding in the vertical direction with respect to the door. ing.

  In addition, the locking device of the swing door which locks a door in the reference | standard position with the locking rod movably mounted | worn with respect to the door vertically is known (for example, patent document 1).

Japanese Patent No. 3369694

  However, the conventional swing door as described above cannot provide a door stop in the closed state in terms of structure, and cannot make the stop position in the closed state constant. For this reason, at the stop position, there is a problem that it is difficult to lock the swing door by accurately fitting the dead bolt on the swing door side to the strike on the door frame side.

  For example, when a swing door affected by wind or the like swings back and forth, the stop position is not fixed and cannot be reliably locked. In particular, when it is necessary to automatically lock the swing door using an electric lock or the like, if the protruding dead bolt does not fit into the strike accurately, the strike substrate is damaged and locked. There was a problem that the device broke down.

  The present invention has been made to solve the above-described problems, and locks the swing door at a stop position by accurately fitting the dead bolt on the swing door side to the strike on the door frame side. It aims at providing the locking device which can be used.

  (1) A locking device according to the present invention is a locking device that locks the swing door by engaging a dead bolt provided so as to be able to project at the end of the swing door with a strike provided on the door frame side. The width of the strike opening in the direction parallel to the moving direction of the swing door is larger than the width of the dead bolt in that direction. Therefore, at the stop position, the dead bolt on the swing door side can be accurately fitted to the strike on the door frame side, so that the swing door can be reliably locked.

  (2) In the locking device according to the present invention, the swing door facing surface of the strike opening has a shape including a curved surface concentric with the movement locus of the door end. Accordingly, the distance between the dead bolt and the strike can be kept constant at the stop position, and the swing door can be locked by accurately fitting the dead bolt on the swing door side with the strike on the door frame side. . For example, even if the swing door is shifted from the strike center and stopped, the dead bolt can be reliably fitted into the strike opening.

  (3) In the locking device according to the present invention, the strike-facing surface of the end portion of the swing door has a shape including a curved surface concentric with the movement locus of the door end portion. Therefore, the distance between the door end of the swing door and the door facing surface of the door frame can be kept constant near the stop position. Thereby, the clearance gap between a door frame and a door can be minimized. For example, when the swing door is configured to be slidable with respect to the door frame, confidentiality inside and outside the door can be enhanced.

  (4) In the locking device according to the present invention, the dead bolt is projected by an electric lock attached to the swing door. Accordingly, it is possible to prevent the strike substrate from being damaged by accurately fitting the projecting dead bolt to the strike.

  (5) In the locking device according to the present invention, the electric lock is characterized in that the dead bolt protrudes based on the proximity of the swing door and the strike. Therefore, in a state where the predetermined range is provided in the proximity state, the dead bolt can be accurately fitted to the strike and the swing door can be locked.

  (6) In the locking device according to the present invention, the cross-sectional shape of the strike opening is a shape including a shape that increases in width as it approaches the swing door facing surface. Accordingly, it is possible to prevent the strike substrate from being damaged by accurately fitting the projecting dead bolt to the strike. In particular, even when the dead bolt comes into contact with the end of the cross-sectional shape, the end surface of the dead bolt can be reliably engaged by sliding.

  (7) In the locking device according to the present invention, a guide member protruding outward is provided at the end portion of the swing door, a guide member engaging portion is provided on the substrate of the strike, and the guide member is moved by turning the swing door. The swing door is guided to a predetermined stop position by being guided to the guide member engaging portion while being pressed against the strike substrate. Therefore, a mechanism different from the mechanism for fitting the deadbolt to the strike can be provided, and the swing door can be reliably stopped by the strike.

  (10) The locking device according to the present invention locks the swing door by engaging a dead bolt provided so as to protrude on the door frame side of the swing door with a strike provided on the swing door side. In the locking device, the width in the direction of the strike opening and parallel to the moving direction of the swing door is provided larger than the width of the dead bolt in that direction. Therefore, at the stop position, the dead bolt on the door frame side can be accurately fitted to the strike on the swing door side, and the swing door can be locked securely.

  The terms used in this specification are defined as follows.

  A “swing door” is a hinged door that can be pushed and opened in both the front and rear directions and can be automatically closed by being hung by a free hinge or a floor hinge.

  The “dead bolt” is a bolt for the final tightening mechanism that is fed out and stored from the lock body.

  The “door frame” is fixed to the floor so as to have a predetermined surface facing the swing door, and the strike fitting according to the present invention is attached thereto. For example, the thing of the same shape as the outer periphery of a swing door, or the support | pillar installed in the free end side of the swing door corresponds to this.

  The “strike opening” is a portion formed by cutting out a strike substrate. Locking can be performed by inserting a dead bolt into the portion.

  The “moving direction of the swing door” is a forward direction or a reverse direction when the swing door rotates around the fixed end side of the swing door.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that this embodiment is merely an example of the present invention, and its size, material, pattern, figure, etc. are not particularly limited, and may be appropriately changed and applied without departing from the scope of the present invention. It is something that can be done.

1. First embodiment 1-1. FIG. 1 is a front view of a swing door 1 on which a locking device according to the present invention is mounted. Both ends of the rotation shaft 11 of the swing door 1 are connected to the floor hinge 4 and the top pivot 9, respectively. The floor hinge 4 and the top pivot 9 are fixed to the upper and lower ends of the first support column 3, respectively. The first support column 3 is suspended upward from the foundation RC6.

  The swing door 1 includes a door handle 7 in the vicinity of the center in the vertical direction, and an electric lock 5 is embedded at the open end. The strike fitting 8 that engages with the dead bolt of the electric lock 5 is embedded in the second column 2 so as to face the dead bolt of the electric lock 5. The second support column 2 is suspended upward from the foundation RC6.

1-2. FIG. 2 is a top view of the swing door 1 on which the locking device according to the present invention is mounted. The swing door 1 can be rotated in the a direction or the b direction about the rotation shaft 11 by the door handle 7 being pressed or pulled back.

  By the operation of the floor hinge 4, the swinging door 1 after being rotated is stopped from rotating so as to overlap the ZZ line. That is, after the swing door 1 is opened in the a direction or the b direction, the floor hinge 4 brakes the rotation of the rotary shaft 11 by the action of a built-in spring or hydraulic pressure, and the swing door 1 is in the stop position Z. -Pull back on the Z line. The state shown in FIG. 2 is the stop position of the swing door 1.

  When the locking operation is performed in a state where the swing door 1 is at the stop position, the electric lock 5 projects the dead bolt 51 toward the strike fitting 8. When the dead bolt 51 of the electric lock 5 and the strike fitting 8 are engaged, the swing door 1 is locked.

1-3. Strike Fitting FIG. 4 is a perspective view of the strike fitting 8 according to the present invention. The strike fitting 8 has a curved substrate, and an opening 81 is provided near the center. Note that the curvature of the curved surface shape is preferably a curvature that approximates the movement locus drawn by the end of the swing door 1. That is, it is desirable to form a curved surface concentric with the movement trajectory.

  A position detection magnet 85 for the electric lock 5 is embedded in the center, and the position detection magnet 85 is used for driving a reed switch or the like in locking control.

1-4. Engagement state FIG. 3 shows an enlarged view of the engagement portion 99 of the swing door 1, the electric lock 5, the dead bolt 51, and the strike fitting 8 shown in FIGS. 3 is a cross-sectional view taken along line AA in the opening 81 (see FIG. 4).

  When the locking operation is performed, the dead bolt 51 is controlled so as to protrude in the t direction from the inside of the electric lock 5 embedded in the swing door 1. The protruding dead bolt 51 is inserted into the opening 81 in the strike fitting 8 embedded in the second support column 2, thereby engaging the dead bolt 51 and the strike fitting 8.

  In this drawing, the width y of the opening 81 of the strike fitting 8 is formed to be larger than the width x of the dead bolt 51. For this reason, even if the swing door 1 is swung near the stop position due to wind or the like, the dead bolt 51 can be reliably inserted into the opening 81 of the strike fitting 8.

  In addition, the distance with the strike metal fitting 8 can be kept constant by making the end shape 15 of the swing door 1 into a curved surface shape. Thereby, the clearance gap between the swing door 1 and a door frame can be minimized.

1-5. Locking Flowchart The dead bolt 51 of the electric lock 5 described above is protruded toward the strike fitting 8 by manual or automatic operation. By controlling this, automatic locking can be performed.

  FIG. 6 is an example of a flowchart of a program for performing automatic locking control using the locking device of the present invention. This program is executed by the CPU of the control device.

  The CPU acquires a door openable signal from the device operated by the user who opens the swing door 1 (step S601). In addition, as a device that can output a door openable signal, the legitimacy of the user such as a numeric keypad input device, various sensor devices, a fingerprint collation device, a face image determination device, an RFID reader, or a remote control device can be used. A device that can be determined corresponds to this.

  When acquiring the door openable signal, the CPU outputs an unlock signal to the electric lock 5 (step SS603). In response to the release signal, the electric lock 5 performs an operation of pulling the dead bolt 51 in the protruding state back into the electric lock 5. Thereby, the locking of the swing door 1 is released, and the swing door 1 can be rotated about the rotation shaft 11 in the a direction or the b direction by pressing or pulling back the door handle.

  When the swing door 1 rotates, the swing door 1 is moved to the stop position (on the ZZ line) shown in FIG. As the swing door 1 moves, the reed switch provided on the electric lock 5 reacts by the magnetic field action of the position detection magnet 85 embedded in the strike fitting 8 to output a door closeable signal, and the CPU acquires this signal. (Step S605). For example, the magnetic detection part of the reed switch may be provided at a position facing the position detection magnet 85.

  When acquiring the door closeable signal, the CPU performs a timer process (step S607). The timer process is performed to output a locking signal after a predetermined timer time has elapsed, such as “3 seconds”, for example. Thereby, it is possible to safely lock the swing door 1 by delaying the timing of obtaining the door closeable signal and outputting the lock signal. For example, when the swing door 1 is rotating, a predetermined time for stopping the rotation may be set as the timer time.

  When the timer process is finished, the CPU outputs a lock signal to the electric lock 5 (step S609). The electric lock 5 is engaged with the opening 81 of the strike fitting 8 by locking the swing door 1 by causing the dead bolt 51 to protrude again in response to the locking signal.

  Thereby, according to the locking device of the present invention, even when automatic locking is performed, the dead bolt 51 can be reliably engaged with the strike fitting 8, and a highly reliable locking device can be provided. it can.

1-6. Summary According to the locking device of the present invention, the door stop in the closed state cannot be structurally provided, and the door can be reliably locked in the swing door in which the stop position in the closed state cannot be made constant. In particular, even when the swing door is automatically locked using an electric lock or the like, failure of the locking device can be prevented without damaging the strike substrate by the projected dead bolt.

2. Second Embodiment In the above embodiment, a mechanism for locking the swing door 1 is provided by engaging the dead bolt 51 of the swing door 1 with the opening 81 of the strike fitting 8. However, in addition to this mechanism, a guide mechanism that guides the swing door 1 to strike accurately and prevents the swing door 1 from shaking may be provided.

  FIG. 8 is a perspective view of the vicinity of the dead bolt of the swing door 1 in the present embodiment. As shown in the figure, the swing door 1 has a guide roller 10 as a guide member embedded in a rotatable state in the vicinity of the dead bolt 51. That is, the guide roller 10 can rotate in the a or b direction.

  FIG. 9 shows a strike 8 used on the door frame side in the locking device of the swing door 1 in the present embodiment. As shown in the figure, the strike 8 includes a guide groove 88 as a guide member engaging portion in the vicinity of the opening 81 into which the dead bolt 51 is inserted. The guide groove 8 has a shape in which the strike substrate is cut out in an arc shape so as to be engaged with the guide roller 10 with high accuracy.

  FIG. 10 shows an enlarged view of the guide groove 88 of the swing door 1, the guide roller 10 and the strike fitting 8 shown in FIGS. 8 and 9. In addition, the strike metal fitting 8 of FIG. 10 is a BB sectional view in the guide groove 88 (see FIG. 9).

  When the swing door 1 rotates from the open state to the closed state, the guide roller 10 comes into contact with the side surface of the strike fitting 8 when the end of the swing door 1 approaches the door frame 2. At this time, the guide roller 10 is guided to the guide groove 88 positioned at the center of the strike fitting 8 while rolling the side surface of the strike fitting 8 in the c or d direction. The guide roller 10 is preferably made of a material that can be slightly deformed, such as a rubber material. Furthermore, it is good also as a structure which attaches the guide roller 10 so that a movement is possible inside, and protrudes outside with a spring.

  The guide roller 10 guided to the guide groove 88 is prevented from rolling in the opposite direction d or c direction by accurately engaging with the guide member 88. Accordingly, the swing door 1 can be reliably prevented from swinging, and the above-described dead bolt 51 can be accurately inserted into and engaged with the strike opening 81.

3. Other Embodiments In the above-described embodiment, the end shape e of the cross-sectional shape in the opening 81 of the strike fitting 8 is a shape parallel to the protruding direction t of the dead bolt. However, the end shape e may be any one of the shapes A to C in FIG. 5A to 5C are top cross-sectional views of the strike fitting 8.

3-1.
In FIG. 5A, the end portion shape e1 of the opening 81 has a shape in which the width 501 on the surface facing the swing door is gradually larger than the width 505 on the back surface. That is, the opening 81 is tapered from the width 501 to the width 505.

  Accordingly, even when the dead bolt 51 comes into contact with the end portion e1 having a cross-sectional shape at the time of protrusion, the leading end surface of the dead bolt 51 can be reliably engaged by sliding. In particular, the strike fitting 8 shown in FIG. 5A is effective when the swing door 1 is relatively light or easily swings.

3-2.
In FIG. 5B, contrary to A in FIG. 5, the end portion shape e <b> 2 of the opening 81 has a shape in which the width 511 on the surface facing the swing door is gradually smaller than the width 515 on the back surface. That is, the opening 81 is tapered from the width 515 to the width 511.

  Thus, even when the end portion of the dead bolt 51 comes into contact with the end portion e2 having a cross-sectional shape by swinging the swing door 1 in the engaged state, the engaged state of the dead bolt 51 and the strike fitting 8 Can be reliably prevented from being released. In particular, the strike fitting 8 shown in FIG. 5B is effective when the swing door 1 is relatively heavy or when swinging is difficult to occur.

3-3.
C in FIG. 5 is an example in which the buffer material 550 is attached to the end of the opening 81. Thereby, even if it is a case where the dead bolt 51 contact | abuts to the edge part of cross-sectional shape, the impact with respect to the strike metal fitting 8 can be absorbed, and damage to the strike metal fitting 8 can be prevented.

3-4.
FIG. 7 is an enlarged view of the engaging portion when the strike fitting 8 is attached to the swing door 1 side and the electric lock 5 is attached to the second support column 2 side. As shown in this figure, the swing door 1 can be rotated in either the a direction or the b direction. A strike fitting 8 is attached to an end surface of the swing door 1 facing the second support column 2. The strike fitting 8 has an opening 81.

  An electric lock 5 is embedded in the second support column 2, and a dead bolt 51 can project toward the swing door 1 side.

  Therefore, at the stop position, the dead bolt 51 on the second support column 2 side can be accurately fitted to the strike fitting 8 on the swing door 1 side, and the swing door 1 can be reliably locked.

3-5.
In the above-described embodiment, the tip shape of the dead bolt 51 is a rectangular shape, but may be an arbitrary shape that can be inserted into the opening 81 of the strike fitting 8. For example, a tapered shape A, a spherical shape B, a pulley shape C, or a ball shape D as shown in FIG. Thereby, the dead bolt 51 can be easily engaged with the strike fitting 8. In particular, on the substrate of the strike fitting 8, the dead bolt 51 is shaped to be easily slid in the a direction or the b direction that is the rotation direction of the swing door 1, thereby reliably guiding the dead bolt 51 to the opening 81. be able to.

3-6.
In the said embodiment, although demonstrated taking swing door as an object, this invention is applicable to doors in general, without being limited to this. In particular, it can be effectively applied to all doors having electric locks.

It is a front view of the swing door 1 of this invention. It is a top view of the swing door 1 of this invention. It is an enlarged view near strike metal fitting 8 of swing door 1 of this invention. It is a perspective view of the strike metal fitting 8 of this invention. It is upper surface sectional drawing of the strike metal fitting 8 of this invention. It is a flowchart of the locking device of this invention. It is an enlarged view near strike metal fitting 8 of swing door 1 of this invention. It is a perspective view of the swing door 1 of this invention. It is a perspective view of the strike metal fitting 8 of this invention. It is an enlarged view near strike metal fitting 8 of swing door 1 of this invention. It is a perspective view of the dead bolt 51 of this invention.

Explanation of symbols

1 Swing door 5 Electric lock 8 Strike bracket

Claims (11)

In the locking device that locks the swing door by engaging the dead bolt provided so as to protrude at the end of the swing door with the strike provided on the door frame side,
A locking device characterized in that a width in a direction parallel to the moving direction of the swing door, which is a width of the strike opening, is larger than a width in the direction of the dead bolt. The locking device of claim 1,
The swing door facing surface of the strike opening has a shape including a curved surface concentric with the movement locus of the door end. The locking device according to claim 1 or 2,
The strike facing surface of the end portion of the swing door has a shape including a curved surface concentric with the movement locus of the end portion of the door. In the locking device in any one of Claims 1-3,
The dead bolt is projected by an electric lock attached to a swing door. The locking device of claim 4,
The electric lock is characterized in that a dead bolt protrudes based on a proximity state between a swing door and a strike. In the locking device of Claims 1-5,
The cross-sectional shape of the strike opening is such that the width increases as it approaches the swing door facing surface. In the locking device of Claims 1-6,
A guide member protruding outward is provided at the end of the swing door,
A guide member engaging portion is provided on the strike substrate,
The swing door is guided to the guide member engaging portion while being pressed against the strike substrate by the rotation of the swing door, thereby guiding the swing door to a predetermined stop position. In strike metal fittings for locking the swing door by engaging a dead bolt provided so as to be able to protrude at the end of the swing door,
A strike metal fitting characterized in that a width in a direction parallel to the moving direction of the swing door, which is a width of the strike opening, is larger than a width in the direction of the dead bolt. The strike fitting of claim 8,
The swing door facing surface of the strike opening has a shape including a curved surface concentric with the movement locus of the door end. The strike metal fitting according to claim 8 or 9,
The cross-sectional shape of the strike opening is a shape including a shape that increases in width as it approaches the surface facing the swing door. In the locking device that locks the swing door by engaging the dead bolt provided so as to be able to protrude on the door frame side of the swing door with the strike provided on the swing door side,
A locking device characterized in that a width in a direction parallel to a moving direction of a swing door, which is a width of a strike opening, is larger than a width in the direction of a dead bolt.

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