JP2012112138A - Lock device for interior door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lock device for an interior door, enabling unlocking of a thumb turn lock from the outside in a case of an emergency inside the door or misoperation disabling unlocking from the inside.SOLUTION: A lock device for an interior door having a thumb turn lock 1, locked/unlocked by thumb turn operation, which causes extension/retraction of a dead bolt 3 from a door side end surface, comprises: a door-inside thumb turn lever 4 on an interior surface of an interior door A for operating the thumb turn lock 1; and a door-outside thumb turn lever 2 on an outside surface of the interior door A for operating the thumb turn lock 1. The door-outside thumb turn lever 2 includes a knob 21 and an engaging part 22 for operating the thumb turn, and is configured to be detachable from the thumb turn lock 1.

Description

  The present invention relates to a lock device for an indoor door, and more specifically, to prevent a person from unexpectedly entering an indoor private space such as a bathroom, a dressing room, a toilet, etc. The present invention relates to an indoor door locking device.

  Normally, the thumb turn lock, which is mainly used as a door lock, is locked / unlocked using a key from the outdoor side for the purpose of crime prevention, and a dead bolt is attached to the door by rotating a lever type thumb turn from the indoor side. A type of locking and unlocking from the side end surface is known.

  For example, in Japanese Patent Laid-Open No. 2004-132012, in a thumb turn lock for operating a thumb turn indoors to cause a dead bolt to protrude and retract from an end surface on the door side to lock / unlock, the inner peripheral wall surface of the cylindrical thumb turn A cylindrical indicator rotatable around the axis of the thumb turn lock is provided between the outer peripheral wall surface of the outer cylinder of the cylinder lock, and the front end surface of the indicator is exposed to the outside, and the front end surface There is disclosed a thumb-turn lock provided with a display means for making it possible to visually recognize the rotation of the indicator.

  And if a suspicious person can destroy the window glass near the door and insert a tool or hand etc. to operate the thumb turn and unlock it, it can prevent unauthorized unlocking operation and provide a thumb turn lock with improved crime prevention The effect is stated.

  On the other hand, in indoors such as detached houses and condominiums, for example, a thumb turn from the inside of the bathroom (in the room) can be used as a partition between the common space of the family, such as the living room and corridor, and the private space such as the indoor bathroom, dressing room, and toilet Bathroom doors that can be operated and locked and can be locked with an inner key to prevent the door from being opened from the outside (outdoors) have become widespread.

  However, when an emergency such as a person falls down in the bathroom, or when an infant or elderly person accidentally operates the thumb turn lever and the door is locked, the door is locked from the dressing room (outdoor) side. It is necessary to cancel the thumb turn.

  Conventionally, the unlocking of the thumb turn from the outdoor side is generally performed by inserting a tip of a coin or a screwdriver into a groove provided on the outdoor side of the thumb turn lock for emergency unlocking. However, when a bather falls down, the person outside the bathroom becomes upset and confused, and it takes time and effort to find coins etc., and the lock is immediately released to rescue the sick. There is a problem that can not be.

JP 2004-132012 A

  The present invention has been made in view of the above-mentioned background art, and the purpose thereof is, for example, an internal key for preventing a person from unexpectedly entering a room such as a bathroom or opening a door due to a mistaken presence. It can be locked in the room as a thumb-turn and can be locked, and it can be easily unlocked by operating the thumb-turn from the outside when an emergency occurs in the room, or when the lock cannot be released from the room due to an incorrect operation of a child or elderly person, etc. It is possible to provide an indoor door locking device that can be used.

  In order to solve the above-described problem, the indoor door locking device according to the first aspect of the present invention includes a thumb turn lock that locks and unlocks the thumb bolt by operating the thumb turn so that the dead bolt protrudes and protrudes from the end surface on the door side. In the indoor door locking device, an indoor thumb turn lever for operating the thumb turn lock is provided on the indoor surface side of the indoor door, and an outdoor thumb turn lever for operating the thumb turn lock is provided on the outdoor surface side of the indoor door. Is composed of a knob portion and an engaging portion for operating the thumb turn, and the outdoor thumb turn lever is detachable from the thumb turn lock.

  In the indoor door locking device according to the invention described in claim 2 of the present application, in the indoor door locking device according to claim 1 of the present application, the engaged portion of the thumb turn lock protrudes from the outdoor surface of the indoor door, An outdoor thumb turn lever is provided on a cover body that is detachably held by the protruding engaged portion.

  In the indoor door locking device according to the first aspect of the present invention, an indoor door that partitions a family common space such as a living room and a corridor and a private space such as an indoor bathroom, a dressing room, and a toilet, for example, a bathroom An indoor thumb turn lever for operating the thumb turn is provided on the indoor side of the indoor door, and an outdoor thumb turn lever for operating the thumb turn is provided on the outdoor side of the indoor door. Since it is provided so as to be detachable, the outdoor thumb turn lever can be normally removed and stored in an inconspicuous place, and the appearance can be improved.

  Also, if the outdoor thumb turn lever is stored in a high place where children cannot reach, the problem that the thumb turn lock is suddenly released by the child's mischief or the like and the partition door opens can be prevented.

  In this way, by making the outdoor thumb turn lever detachable, there is no need to attach a child lock for preventing children's mischief to the outside of the reach of children, so it looks better, and the door knob and It becomes possible to arrange the thumb turn lock, and the design of the indoor door can be improved.

  In the indoor door locking device according to the second aspect of the present invention, the engagement portion of the thumb turn lock protrudes from the outdoor surface of the indoor door, and the cover is detachably held by the protrusion engagement portion. Since the outdoor thumb turn lever is provided on the body, the mountain-like engagement piece protruding from the back side of the cover body uses the existing groove portion for emergency unlocking, and engages and rotates with this groove portion. Thus, the lock can be released.

  Further, when the thumb turn is not required due to a change in the family structure such as an increase in the size of the child, the outdoor thumb turn lever can be removed and used as a normal partition door.

Explanatory drawing which shows schematic structure of the locking device which concerns on this invention attached to the indoor door. The longitudinal cross-sectional view which shows the state which installed the thumb turn lock which concerns on this invention in the door. Sectional drawing which follows the XX line shown in FIG. The cross-sectional view which shows 2nd Embodiment of the outdoor thumb turn lever which concerns on this invention. The longitudinal cross-sectional view which shows the state which provided the thumb turn lock which concerns on the 3rd Embodiment of this invention whose latch also serves as a deadbolt in the indoor door.

  Hereinafter, an embodiment of a locking device for an indoor door according to the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an external explanatory view showing a schematic configuration of a locking device according to the present invention attached to an indoor door A. As shown in FIG. 1, the thumb-turn lock device comprises a thumb-turn lock 1 and an outdoor thumb-turn lever 2 for operating the thumb-turn lock 1. The outdoor thumb-turn lever 2 is an engaging portion for operating the thumb portion 21 and the thumb-turn. 22.

  The thumb-turn lock 1 locks and unlocks the dead bolt 3 from the side end surface of the indoor door A by the operation of an internal cam. FIG. 1 shows a state in which the dead bolt 3 is in a sunk state and unlocked. Further, as shown in the figure, the engaging portion 22 of the outdoor thumb turn lever 2 is detachable from a key hole 5 having a substantially square cross section formed on the top surface of the thumb turn lock 1 on the outdoor side.

  FIG. 2 is a longitudinal sectional view showing a state in which the thumb turn lock 1 is installed in the door A and the dead bolt 3 is sunk. As shown in FIG. 2, the thumb turn lock 1 is composed of a cam 11, a coil spring 12, and a dead bolt 3, and a flange 31 is formed at the rear end of the dead bolt 3. The coil spring 12 is compressed and interposed between the flange 31 and the inner surface of the case 15 of the thumb turn 1, and the dead bolt 3 is normally attached to the side end surface of the indoor door A by the bias of the coil spring 12. It is said to be dead.

  When the outdoor thumb turn lever 2 is rotated against the urging force of the coil spring 12, the cam 11 rotating in conjunction with the rotation of the outdoor thumb turn lever 2 causes the flange 31 of the dead bolt 3 to move rightward in FIG. When the deadbolt 3 is pushed out, the tip of the deadbolt 3 is fitted into the fitting portion 3a formed in the vertical rod B, and the thumb turn lock 1 is locked (indicated by a two-dot chain line in FIG. 2). Status).

  FIG. 3 is a cross-sectional view taken along line XX shown in FIG. In FIG. 3, the cam 11 is rotated by operating the indoor thumb turn lever 4 from the indoor side, for example, inside the bathroom, and the thumb turn lock 1 is locked by the same operation state as described above. On the other hand, for example, when a bather falls down with the thumb turn lock 1 locked, the lock cannot be released from the room. Therefore, it is necessary to release the lock of the thumb turn lock 1 from the outside and rescue it.

  Normally, the outdoor thumb turn lever 2 is removed from the thumb turn lock 1 and stored in a separate place outside the predetermined bathroom so that people do not inadvertently enter the bathroom, but the bather releases the thumb turn lock 1 in this way. In the case of an emergency that cannot be performed, the engaging portion 22 of the outdoor thumb turn lever 2 that is detachable from the thumb turn lock 1 is inserted into a key hole 5 having a substantially square cross section provided on the outer side of the thumb turn lock 1. And the dead bolt 3 is returned to the collapsed state by the restoring force of the coil 12 to unlock the thumb turn lock 1. Thus, the thumb turn lock 1 locked from the room can be unlocked from the outside, and the bather can be rescued.

  FIG. 4 is a cross-sectional view showing a second embodiment of the outdoor thumb turn lever 2. As shown in FIG. 4, in the second embodiment, a protruding engagement portion 13 of the thumb turn lock 1 is provided so as to protrude outside the outdoor surface of the indoor door A, and the protruding engagement portion 13 is provided with a cover body 6 interposed therebetween. The outdoor thumb turn lever 2 is detachably held.

  The cover body 6 is made of an elastic body such as synthetic rubber or synthetic resin. An engagement piece 23 having a mountain shape in a side view is projected on the back surface of the cover portion of the cover body 6 and the protruding engagement of the thumb turn lock 1 is provided. In the portion 13, a groove portion 14 with which the engagement piece 23 engages is recessed. A convex portion 61 is provided around the inner peripheral surface of the cover body 6, and an annular concave portion 131 that engages with the convex portion 61 is provided around the outer peripheral surface of the protruding engaged portion 13.

  The convex part 61 and the concave part 131 are detachably elastically engaged with the cover body 6 made of the elastic body and the protruding engaged part 13 of the thumb turn lock 1. By doing so, the outdoor thumb turn lever 2 is detachably held by the protruding engaged portion 13 via the cover body 6.

  FIG. 5 is a longitudinal sectional view showing a state in which the thumb turn lock 1 according to the third embodiment of the present invention in which the latch 7 also serves as a dead bolt is installed in the indoor door A.

  As shown in FIG. 5, the latch 7 is usually fitted into a latch receiver 7 a provided on the vertical rod B by the elastic force of the leaf spring 10 and the coil spring 12 to keep the indoor door A closed. In other words, the leaf spring 10 is a compression spring, and the leaf spring 10 urges the gear 81 in the right direction of rotation through a projection 811 projecting from the gear 81. As a result, the gear 81 moves the rack 8 to the right. As a result, the latch 7 is fitted into the latch receiver 7 a by the restoring force of the coil spring 12.

  The protrusion 811 formed on the gear 81 reciprocally rotates between two stoppers 812 and 812 formed on the inner surface of the thumb turn case 15.

  Further, the thumb turn 1 has a lever 111 fixedly formed in a direction perpendicular to the rotating shaft 101, and a protrusion 92 fixed to the upper end portion 91 of the stopper 9 in a long hole 112 formed in the tip end portion of the lever 111. Is inserted. That is, the upper end 91 of the stopper 9 is connected to the tip of the lever 111 so as to be movable up and down and rotatable. Furthermore, the tip of the lever 111 is elastically contacted by a mountain-shaped leaf spring 9a formed on the inner surface of the case 15 so as to be clickable up and down. When the indoor door A is closed, the latch 7 is fitted into the latch receiver 71 as shown by the solid line in FIG. In this state, the latch 7 is kept unlocked. Therefore, the latch 7 can be removed from the latch receiver 7a by the action of the rack 8 that converts the rotational movement of the door knob into a linear movement, and the indoor door A can be opened and closed.

  In this state, when the rotation shaft 101 of the thumb turn lock 1 is rotated through the indoor thumb turn lever in the bathroom, the tip of the lever 111 clicks against the elastic force of the leaf spring 9a and falls downward. As a result, the stopper 9 is lowered to the position indicated by the two-dot chain line in FIG. In this state, the lower end 93 of the stopper 9 prevents the rack 8 from moving to the left, and the latch 7 cannot be removed from the latch receiver 7a and functions as a dead bolt.

  The stopper 9 has a projection 92 at its upper end 91 guided by a long hole 112 formed at the tip of the lever 111, and its lower end 93 is guided by a guide hole 151 formed at the thumb turn case 15. Do up and down movements.

  When the bather falls down with the latch 7 locked, the outdoor thumb turn lever stored in a predetermined place is inserted into the key hole, and the stopper 9 is positioned in the upper position shown by the solid line in FIG. The latch 7 locked from the inside of the bathroom can be unlocked from the outside by moving to.

  Although the said embodiment described the case where the locking device of the indoor door which concerns on this invention was applied to the indoor door, it may apply to a sliding door, and it is not only a bathroom, a dressing room, a toilet etc. but a bedroom. It may be used for indoor doors such as children's rooms and passengers. As described above, the present invention can be modified in design and is included in the technical scope of the present invention without departing from the scope of the claims.

A Indoor door B Vertical shaft 1 Thumb turn 101 Rotating shaft 11 of thumb turn lock Cam 111 Lever 112 Long hole 12 formed in the lever 12 Coil spring 13 Protruding engaged portion 131 Recess 14 Groove portion 15 Thumb turn case 151 Stopper guide hole 2 Outdoor thumb turn lever 21 Knob portion 22 Engagement portion 23 Engagement piece 3 Dead bolt 31 Dead bolt flange 3a Insertion portion 4 Indoor thumb turn lever 5 Key hole 6 Cover body 61 Protruding portion 7 Latch 7a Latch receiver 8 Rack 81 Gear 811 Protrusion 812 Stopper 9 Stopper 91 Upper end portion 92 of stopper Stopper 93 fixed to upper end portion of stopper Lower end portion 9a of stopper Leaf spring 10 Leaf spring

Claims (2)

  In the indoor door lock device with thumb turn lock that locks and unlocks by operating the thumb turn so that the dead bolt is raised and lowered from the end surface of the door side, an indoor thumb turn lever for operating the thumb turn lock is provided on the indoor surface side of the indoor door An outdoor thumb turn lever for operating the thumb turn lock is provided on the outdoor surface side of the indoor door, the outdoor thumb turn lever is composed of a knob portion and an engaging portion for operating the thumb turn, and the outdoor thumb turn lever is connected to the thumb turn lock. An indoor door locking device that can be attached and detached.   The indoor according to claim 1, wherein an engaged portion of the thumb turn lock is provided so as to protrude outside the outdoor surface of the indoor door, and an outdoor thumb turn lever is provided on a cover body detachably held by the protruding engaged portion. Door lock device.

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