JP2007291688A - Door device with temporary lock function for buildings - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce noise generated when a door is temporarily locked when the door is closed. <P>SOLUTION: A pull handle 60 is bridged between upper and lower handle seats 40, 50 fixed to the door end of the door. The lower end of the pull handle is fixed to the hinge 51 of the lower handle seat 50. The upper part of the pull handle can be rotated around the hinge in the direction that it departs from the handle seat 40. A latch 72 having a recess 72a engageable with a striker fixed to a door frame and a ratchet 73 having a lock claw 73a engageable with the engagement claw 72b of the latch 72 are swingengly supported inside the upper handle seat 40. The locked state of the striker by the engagement recess 72a is held by the engagement of the claws 72b, 73a. Since the tolerance of the engagement is small, noise is not almost generated during the locking. The ratchet 73 is interlocked with the pull handle 60 by a release arm 43. When the pull handle is pulled, it is swung in the direction that the engagement thereof with the latch 72 is released, and the locking is released. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door device attached to an entrance of a building and having a temporary lock function by a latch.

Conventionally, a door device attached to a doorway of a building such as a house is often used with a temporary lock function by a latch (latch bolt) so as not to be opened by receiving wind pressure from a closed state. ing.
These are mechanisms in which a latch protruding from the door end of a door device in which a door and a door frame are hinged is fitted into an engagement hole of a receiving bracket provided at a position opposite to the door frame. This is convenient because the closed door can be maintained without the need for a full lock with bolts.

  For example, in Patent Document 1, a latch can be moved forward and backward by a handle operation so that the latch protrudes and retracts from the door end side, and when protruding due to forward movement, the latch fits into an engagement hole of a door bracket receiving metal and is locked. A door device with a temporary lock function is disclosed in which the latch comes out of the engagement hole and is unlocked when retracted due to retraction.

  Further, in Patent Document 2, a latch provided with an inclined surface in the rotation direction of the door can be reversed by a handle operation, and the latch is pulled out when the inclined surface is raised in a state where the latch is fitted in the engagement hole of the receiving metal fitting. A door device with a temporary lock function is disclosed in which the latch can be removed from the engagement hole and the lock is released when the inclined surface is laid down after being locked.

However, both of these conventional mechanisms have a disadvantage that a very large noise is generated when the tip of the latch collides with the bottom surface of the engagement hole of the door frame during temporary locking.
Japanese Patent Laid-Open No. 10-18667 Japanese Patent Laid-Open No. 11-148259

  An object of the present invention is to reduce noise generated when the door device is temporarily locked.

  In order to solve the above-mentioned problems, a door device with a temporary lock function for a building according to the present invention includes a door frame, a door for opening and closing the doorway of the door frame, and a pair of upper and lower attached to the door end side of the door. The handlebar seat, the bar-shaped pull handle that swings in the direction away from the upper handle seat with the lower end supported by the lower handle seat as the center, and the position facing the upper handle seat of the door frame The striker is incorporated in the upper handle seat so as to be swingable, and has an engagement recess that can be engaged with the striker at the lower portion on one side facing the outside of the upper handle seat, and an engagement claw on the upper portion on the other side. A latch having an elastic member that urges the latch in a direction in which the engagement recess and the striker are disengaged, and an engagement with the engagement claw of the latch incorporated in the back of the latch in the upper handle seat By the strike of the latch In conjunction with a ratchet that maintains the engagement state with the squid, an elastic member that urges the ratchet in a direction to engage with the engagement claw of the latch, and a swing of the pull handle in a direction away from the upper handle seat The ratchet is configured to include a release arm for operating the ratchet in a direction in which the engagement is released from the engagement claw of the latch.

  In this way, since the engagement between the latching claw and the ratchet that are engaged when the door device is locked can be reduced, the impact can be suppressed, and the noise at the time of closing the door can be reduced.

  If a stopper with which the ratchet is brought into contact with the latch is provided on the preceding side in the ratchet urging direction, the shock at the time of engagement is dispersed and relaxed by the contact with the stopper, so that the sound can be further reduced. .

  When the rubber ring is attached to the stopper, the impact of the collision between the ratchet and the stopper is absorbed by the rubber cushioning action, so that the sound reduction effect is further enhanced.

  A mechanism for temporarily locking the door includes a swinging latch that engages with the striker, and a ratchet that maintains a holding state of the swinging latch with respect to the striker, and an engagement claw of the latch that is engaged when locked. By reducing the engagement with the ratchet, abnormal noise at the time of locking is reduced as compared with the conventional case.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 8 show a door device with a temporary lock function for buildings (hereinafter referred to as a door device) 1 according to an embodiment.
As illustrated, a door 20 is attached to the doorway of the door frame 10 so as to be opened and closed by a hinge.

A pair of substantially similar handle seats 40, 50 are vertically attached to the door tip on the outdoor side of the door 20, and a bar-shaped pull handle 60 is passed between the upper and lower handle seats 40, 50. Has been.
The lower end portion of the pull handle 60 is connected to the lower handle seat 50 via the hinge 51, so that the pull handle 60 can swing in a direction in which the upper portion of the pull handle 60 is separated from the upper handle seat 40. Yes.

  As shown in FIGS. 4 to 6, the upper handle seat 40 has a hollow portion that opens at an end surface facing the door frame 10, and an arm insertion hole 41 is formed at the closed end of the hollow portion.

  A cover 42 that closes the hollow portion is attached to the open end surface of the upper handle seat 40 on the door frame 10 side, and a notch 42 a is provided in the lower portion of the end plate of the cover 42.

A release arm 43 is incorporated in the hollow portion of the upper handle seat 40.
The release arm 43 has a U shape with a pair of side plates provided on both sides of the end plate. The end plate faces the outside of the upper handle seat 40 from the arm insertion hole 41 and is fixed to the pull handle 60.

A triangular window 43a is formed on one side plate of the release arm 43, and a long hole 43b is formed on the opposite side of the side plates closer to the end plate from the window 43a.
A connecting pin 44 is inserted into the elongated hole 43b and fixed to the upper handle seat 40, and a kick spring 45 is provided between the connecting pin 44 and a locking pin 43c provided at the tip of the release arm 43. Yes.

  The kick spring 45 is elastically deformed when the upper portion of the pull handle 60 swings in a direction away from the upper handle seat 40, and the restoring elasticity causes the pull handle 60 to return to the direction in which the upper portion approaches the upper handle seat 40. It is supposed to be moved.

  A lock device 70 for temporarily fixing the door 20 by engagement with the striker 30 is incorporated inside the hollow portion of the upper handle seat 40 on the open end side.

  Here, as shown in FIGS. 1 and 2, the striker 30 includes a support frame 31 and a locking bar 32 passed between opposing side plates of the support frame 31, and the support frame 31 is an upper handle seat. 40 is fixed to the door frame 10 so as to oppose it.

As shown in FIGS. 4 to 6, the locking device 70 has a rectangular tubular casing 71.
The casing 71 is inserted into the hollow portion of the upper handle seat 40, and a flange 71a formed outward from the open end is abutted against the end face of the upper handle seat and screwed.

Between the opposing side plates of the casing 71, two support pins 71b and 71c are spaced forward and backward, and the plate-like latch 72 swings by the front support pin 71b provided on the opening end side. It is supported freely.
Further, the plate-shaped ratchet 73 is swingably supported by the rear support pin 71c.

The central portion of the latch 72 is supported by a support pin 71b, and its outer peripheral one side is freely engageable with the notch portion 42a of the cover 42. The latch bar 32 of the striker 30 is provided at the lower portion of the outer peripheral one side. Engaging recesses 72a that can be engaged with each other are formed.
The lower part of the other side of the latch 72 is a convex arc surface, and an engaging claw 72b is provided on the upper part of the convex arc surface.

The ratchet 73 is substantially L-shaped, and one end thereof is supported by a support pin 71c.
A lock claw 73a that can be engaged with the engagement claw 72b of the latch 72 is formed on an upper portion of the outer peripheral side facing the latch 72 of the ratchet 73, and the latch claw 73a and the engagement claw 72b engage with each other. 72 is held in a state where the engaging recess 72 a engages with the locking bar 32 of the striker 30.

An interlocking pin 73 b is provided on the side surface of the other end portion of the ratchet 73.
The interlocking pin 73b is inserted into the window 43a of the release arm 43, and when the release arm 43 is pulled in accordance with an operation of pulling the upper portion of the pull handle 60, the interlocking pin 73b hits the edge of the window 43a and is pulled together.
In this way, the ratchet 73 swings in a direction in which the lock claw 73a is disengaged from the engagement claw 72b of the latch 72.

In addition, a stopper 74 is passed at a position facing the upper part of the outer side of the ratchet 73 at the upper part between the opposing side plates of the casing 71.
The ratchet 73 is prevented from further swinging to the latch 72 side when a part of the upper portion of the ratchet 73 comes into contact with the stopper 74 from the lock claw 73a.
A rubber ring 74a is attached to the outer surface of the stopper 74.

  Here, the latch 72 has an elastic member 75 incorporated in the casing 71 in contact with the back surface of the engaging claw 72b, so that a part of the upper part of the engaging recess 72a is located on the upper edge of the notch 42a of the cover 42. It is biased in the abutting direction.

  On the other hand, the ratchet 73 is urged in a direction in which the lock claw 73a is engaged with the engagement claw 72b of the latch 72 by the elastic member 76 incorporated in the casing 71 coming into contact with the lower portion of the L-shaped bent portion. .

As shown in FIG. 6, a guide pin 73 c is provided on the side surface of the L-shaped bent portion of the ratchet 73.
The guide pin 73c is inserted into an arc-shaped elongated hole 71d formed in one side plate of the casing 71, and an end portion of the link 77 protruding from the elongated hole 71d to the outside of the casing 71 as shown in FIG. One end is supported.

The other end portion of the link 77 is supported by the end portion of the support pin 71c, and the link 77 is swingable around the support pin 71c in conjunction with the ratchet 73.
A projecting piece 77a is provided at the other end of the link 77. As shown in FIG. 2, one end of the inner / outer interlocking bar 21 is in contact with the projecting piece 77a.

  As shown in FIG. 2, the inner / outer interlocking bar 21 is supported in a swingable manner in the door 20, and the tip of the release bar 81 is in contact with the other end.

On the other hand, as shown in FIGS. 1 and 2, a pair of substantially similar handle seats 80, 90 are attached to the door end on the indoor side of the door 20 with a space in the vertical direction.
A bar-shaped push handle 100 is passed between the upper and lower handle seats 80 and 90.
As shown in FIG. 7, the lower end portion of the push handle 100 is connected to the lower handle seat 90 via the hinge 91, so that the push handle 100 is centered on the hinge 91 so that the upper portion approaches the upper handle seat 80. It can be swung freely.

As shown in FIGS. 7 and 8, the rear end portion of the release bar 81 described above is inserted into the hollow portion of the upper handle seat 80 and fixed to the push handle 100.
Therefore, the release bar 81 swings downward in conjunction with the pushing operation of the push handle 100.
The internal / external interlocking bar 21 pushed by the release bar 81 swings and pushes up the protruding piece 77a of the link 77 of the lock device 70.

  The structure of the door device 1 according to the embodiment is as described above.

As shown in FIG. 1, when the door 20 is opened, the engaging claw 72b of the latch 72 and the locking claw 73a of the ratchet 73 are disengaged as shown in FIG.
At this time, the latch 72 is in contact with the upper edge of the notch 42 a of the cover 42 by the urging of the elastic member 75, and the upper part of the latch 72 is in contact with the upper edge of the notch 42 a of the cover 42.
Further, the ratchet 73 is in a so-called idle state in which the interlocking pin 73 b is separated from the edge of the window 43 a of the release arm 43 by the biasing of the elastic member 76.

From this state, the pull handle 60 is pushed to swing the door 20 toward the door frame 10 as shown by the arrow in FIG.
Then, the engagement bar 72 of the striker 30 attached to the door frame 10 is fitted into the engagement recess 72a of the latch 72 facing the outside from the upper handle seat 40 of the door 20, and the latch 72 is engaged while being held as it is. It is pressed by the bar 32 and swings in the direction opposite to the urging direction against the elastic member 75.

At the time of this swing, the engaging claw 72b rises while the back convex arc surface of the engaging claw 72b of the latch 72 is in sliding contact with the abdominal concave arc surface of the locking claw 73a of the ratchet 73.
When the engaging claw 72b of the latch 72 gets over the back of the lock claw 73a of the ratchet 73, they are engaged with each other by the urging of the elastic members 75 and 76 so that the door device 1 is closed as shown in FIG. At the same time, it is temporarily locked.

At this time, the engagement between the latch 72 and the claws 72b and 73a of the ratchet 73 is very small.
Further, simultaneously with the engagement between the claws 72b and 73a, the upper part of the ratchet 73 from the lock claw 73a contacts the stopper 74, so that the impact is dispersed and relaxed.
Since the rubber ring 74a is attached to the stopper 74, the rubber absorbs the impact.
Therefore, almost no abnormal noise is generated when the door device 1 is temporarily locked.

  On the other hand, when the pull handle 60 is pulled from the state where the door 20 is closed as shown in FIG. 2, the release arm 43 is guided to the connecting pin 44 inserted into the long hole 43b as shown in FIG. Then, the rear end portion is pulled out from the upper handle seat 40.

When the release arm 43 is pulled, the interlocking pin 73b that has been inserted into the window 43a of the release arm 43 is pulled along with the edge of the window 43a, and the ratchet 73 is latched around the support pin 71c. Swings away from the direction.
For this reason, the engagement claw 72b of the latch 72 is disengaged from the lock claw 73a of the ratchet 73, and the latch 72 swings in the direction in which the engagement recess 72a opens the striker 30 by the urging of the elastic member 75. Then, the temporary lock of the door device 1 is released and the door is opened.

Similarly, when the push handle 100 is pressed from the state in which the door 20 is closed, the release bar 81 swings downward, and when pressed, the inner / outer interlocking bar 21 swings and the protrusion of the link 77 of the lock device 70 is swung. The piece 77a is pushed up.
When the ratchet 73 swings in conjunction with the link 77, the engagement with the latch 72 is released and the door is opened.

In this embodiment, the ratchet 73 is of a swinging type, but is not limited to this. The ratchet 73 is urged by the elastic member 76 in a direction to engage with the latch 72 and in a direction in which the engagement is released. Other structures may be used as long as the pull handle 60 can be operated.
For example, a ratchet 73 that can linearly move forward and backward is incorporated in the casing 70, and is urged in a direction (forward direction) to be engaged with the latch 72 by the elastic member 76, and the engagement with the latch 72 is released by the pull handle 60. You may form so that it can operate in the direction (backward direction).

The perspective view of the door apparatus concerning embodiment Top view of door device FIG. 2 is a longitudinal sectional view taken along line II 3A is a longitudinal sectional view of the door device of FIG. 3A is a longitudinal sectional view showing a state where the door device of FIG. Front view of pull handle and handle seat Exploded perspective view of pull handle and upper handle seat Exploded perspective view of the locking device (A) is a longitudinal sectional view taken along line II-II in FIG. 2, (b) is a front view of the push handle and the handle seat. Cross-sectional view along line III-III in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door apparatus 10 Door frame 20 Door 21 Inside / outside interlocking bar 30 Striker 31 Support frame 32 Locking pin 40 Upper handle seat 41 Arm insertion hole 42 Cover 42a Notch 43 Release arm 43a Window 43b Long hole 43c Locking pin 44 Connecting pin 45 kick spring 50 lower handle seat 51 hinge 60 pull handle 70 locking device 71 casing 71a flange 71b, 71c support pin 71d long hole 72 latch 72a engagement recess 72b engagement claw 73 ratchet 73a lock claw 73b interlocking pin 73c guide pin 74 stopper 74a Rubber ring 75, 76 Elastic member 77 Link 77a Projection piece 80 Upper handle seat 81 Release bar 90 Lower handle seat 91 Hinge 100 Push handle

Claims (3)

Door frame,
A door that opens and closes the doorway of this door frame;
A pair of upper and lower handle seats attached to the door end of the door;
A bar-shaped pull handle that can swing in a direction in which the upper part is separated from the upper handle seat with the lower end supported by the lower handle seat as the center,
A striker mounted at a position facing the upper handle seat of the door frame;
A latch that is swingably incorporated in the upper handle seat, has an engagement recess that can be engaged with the striker at the lower portion on one side facing the outside of the upper handle seat, and an engagement claw on the upper portion on the other side;
An elastic member that urges the latch in a direction in which the engagement recess and the striker are disengaged;
A ratchet incorporated in the back of the latch in the upper handle seat and held in engagement with the striker of the latch by engagement of the latch with the engagement pawl;
An elastic member that urges the ratchet in a direction to engage with an engaging claw of the latch;
With a temporary lock function for buildings provided with a release arm that operates the ratchet in a direction in which the latch is released from the engagement claw of the latch in conjunction with the swing of the pull handle in a direction away from the upper handle seat Door device.   2. The door device with a temporary lock function for a building according to claim 1, wherein a stopper with which the ratchet comes into contact with the latch when engaged with the latch is provided on a leading side in the urging direction of the ratchet.   The door device with a temporary lock function for buildings according to claim 2, wherein a rubber ring is attached to the stopper.

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