JPH0696924B2 - Door lock - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a door lock having a dead bolt as a final tightening mechanism and a latch bolt as a temporary tightening mechanism, and particularly an improvement of the locking / unlocking mechanism thereof. It is about.

[Prior Art] In the conventional door lock of this type, the dead bolt is provided so as to be retractable from the front by an operating lever that rotates in conjunction with a thumb turn or a cylinder operation, and the latch bolt is provided with an inner and outer handle. It is provided so that it can be retracted by a latch hub that rotates in tandem with the operation, and is retractable from the front when the retractor to which elastic force is always applied in the front direction is retracted. It was usually separate from the operation of the bolts.

[Problems to be Solved by the Invention] In the above conventional door lock, the operation of the thumb turn or the cylinder for projecting the dead bolt and the operation of the inner and outer handles for retracting the latch bolt from the front are independently separated. Yes, it was possible to operate the outer handle itself even if the dead bolt was projected. Therefore, even if the dead bolt is projected and locked, it is not known that it is locked only by operating the outer handle, and the locked state can be confirmed only by opening the door.

An object of the present invention is to simultaneously restrain the outer handle in the locked state where the dead bolt is projected so that the operation cannot be performed, the locked state can be immediately recognized, and the double locking function can be retained. .

Also, in such a double-locked state, when the door is unlocked / opened, the restraint state of the outer handle can be released at the same time by simply operating the thumb turn or the cylinder to immerse the dead bolt. There is provided a door lock that unlocks and opens the door by releasing the restraint state of the outer handle and immersing the dead bolt by simply operating.

[Means for Solving the Problems] To achieve the above object, in the door lock of the present invention, first, the latch hub is separated into an inner handle latch hub and an outer handle latch hub, and retractors are provided so as to be independently operable. Only the outer handle can be restrained if necessary.

As a means for obtaining the restraint state of the outer handle, a latch hub stopper having an engaging portion that can be engaged / disengaged with the latch knob for the outer handle that is in a non-rotating state is provided. The outer grip is restrained by the disengagement operation. In the present invention, the engagement / disengagement operation is interlocked with the withdrawal operation of the dead bolt through the interlocking member, and the outer grip is constrained when the dead bolt is projected. The mechanism is used to obtain the state.

Also, when operating the inner handle, a release lever that works in conjunction with the retractor that retracts is provided, and this release lever allows the deadbolt operating lever to be returned by rotation, thereby restraining the outer handle. In this state, even when the dead bolt is in the locked state, the dead bolt can be retracted by simply operating the inner handle to release the restraint state of the outer handle.

Furthermore, when changing the left / right handed state according to the opening / closing direction of the door, the conventional inner and outer handles are reversed, but in the present invention, a means for changing the handle to be restrained is also provided. It has gained.

That is, two latch hubs that rotate independently in response to the operation of the inner and outer handles are provided in an overlapping manner in the handle axis direction, and an engaging portion is provided on the movable portion of the latch hub stopper that is movably provided in the handle axis direction. By providing the movable portion selectively facing one of the latch hubs, the left and right hand mechanisms can be easily changed.

[Operation] The door lock of the present invention is as described above, and when the dead bolt is projected through the actuating lever by the operation of the inner and outer handles, the engaging portion of the latch hub stopper is interlocked with the interlocking member that interlocks with the dead bolt. Engages with the outer handle latch hub to prevent its rotation, and also locks the outer handle to enter the double-locked state, making it impossible to operate the handle from the outside, so the locked state is recognized only by the handle operation. it can.

If the deadbolt is retracted by operating the thumb turn or cylinder, the latch hub stopper will return to the old position in conjunction with this and the engagement with the latch hub will be released, so the outer handle can be unlocked. Return to.

Further, even when the dead bolt is projected and the outer handle is in the double locked state in which the outer handle is in a locked state, if the inner handle is operated, the operation lever is pivotally returned by the release lever that interlocks with the retractor, and the dead bolt is retracted. By this retracting operation, the latch hub stopper also returns to the old shape, so that the restrained state of the outer handle is released, and the door can be unlocked and opened easily and quickly.

In addition, an engaging part is provided on the movable part of the latch hub stopper,
If the movable part is movable in the axis direction of the handle, even if the door attachment state is different and the left-right hand is changed, the mechanism can be changed by moving the movable part.

[Embodiment] Hereinafter, a door lock according to an embodiment of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a side view of a door lock, which is shown with a cover removed in an unlocked state, and 1 is a dead bolt slidably provided with a guide shaft 2 and an elongated hole 3 as a guide. The head 1b is provided to be retractable from the front 5 in association with the rotation of the operating lever 4 that engages with the side edge of the portion 1a. The operating lever 4 is rotatably supported by the hub 4a between the lock case 6 and the cover, and engaging teeth 4b and a cam 4c are formed on the outer periphery of the hub 4a. Reference numeral 7 denotes a dead hub, which has a toothed portion 7a capable of meshing with the engaging tooth 4b on the outer peripheral portion, and is provided so as to be rotatable by a thumb turn from the inside and a cylinder from the outside. Therefore, when the dead hub 7 is rotated by the thumb turn or the cylinder operation, the engagement lever 7a and the engagement tooth 4b mesh with each other to rotate the actuating lever 4 clockwise in the drawing, thereby causing the dead bolt 1 to rotate.
To the protruding state. Reference numeral 8 denotes a dead stopper, which is constantly urged by a spring 9 so that the front end portion 8a is engaged with the rear end of the dead head 1b.
Depending on the engaged state, the dead bolt is protected against illegal immersive operation. When the dead bolt 1 is retracted due to the rotation of the operating lever 4, the cam 4c moves into the dead stopper 8
The rear end portion 8b is pressed and rotated in the clockwise direction to release the engaging state with the dead head 1b and then to be immersed. 10 is a dead spring and 11 is an operating lever spring.

Reference numeral 12 denotes a latch bolt, which is formed by assembling a latch head 12a, a latch splint 12b, and a latch connecting plate 12c, and the latch connecting plate 12c is loosely fitted on the latch spindle 12b. 13 is a latch spindle receiver, 14 is a spring receiver, 15 and 16
Is a latch spring. In addition, this latch head 12a
The head orientation is 180 to accommodate left-right hand changes.
Rotation conversion is possible. 17 is a latch stopper,
It is swingably provided about a shaft 18, and a tip portion 17a thereof is spring-biased in a direction of engaging a rear end portion of a latch head. 19
Is a trigger bolt which is always spring-biased in the protruding direction, and is linked so as to separate the latch stopper 17 from the rear end of the latch head in the protruding state. A bent protruding piece 12d is provided on a part of the latch connecting plate 12c.When the inner and outer handles are operated to open the door, the bent connecting piece 12d and the inclined cutout surface 17b are moved along with the backward movement of the latch connecting plate 12c. The latch stopper 17 is swung in the clockwise direction by the sliding contact with and is disengaged from the rear end of the latch head.

Reference numeral 20 is a retractor to which a spring 22 set between the front bent end 20a and the spring receiver 21 is constantly provided with elastic force in the front direction, and which is a latch hub that rotates in conjunction with the operation of the inner and outer handles. Rear folding ends 20b, 2 where 23 is engaged
0b is provided so as to be retractable via the latch hub 23 when the inner and outer handles are operated. As shown in the figure, one of the rear bent ends 20b is engaged with the rear end bent piece 12e of the latch connecting plate 12c, so that when the retractor 20 retreats, the latch bolts together with the connecting plate 12c are retracted. It has become.

The latch hub 23 is separated into an inner handle latch hub 23a and an outer handle latch hub 23b, and is provided in two stages so as to overlap in the handle axis direction, and each retractor 20 can be operated independently. Therefore, if the inner handle is operated, the retractor 20 is retracted by the inner handle latch hub 23a, and if the outer handle is operated, the outer handle latch hub 23a is retracted.
The retractor 20 is retracted by 23b.

Reference numeral 24 is a latch hub stopper having an engaging portion 24a that can be engaged / disengaged with respect to the outer handle latch hub 23b in the non-rotating position, and is provided between the lock case 6 and the cover so as to stand upright with guide posts 25a, 25b. It is guided by the fitting state with the elongated holes 24b, 24c, and is provided so as to be movable up and down in the drawing, so that the dead bolt 1 can be moved up and down by interlocking with the appearance of the dead bolt 1. It is linked. That is,
As shown, the upper end bent portion 24d of the latch hub stopper 24
Extending in the direction of the dead bolt 1 and this upper end bent part 24d
And a linking piece 1c provided at the rear end of the dead bolt 1 are linked by a stopper lever 26. The stopper lever 26 is rotatably and axially supported in the lock case 6 via a spacer ring and has first, second and third engaging pieces 26a, 26b and 26c. 26a and engaging piece 26
In b, it is linked to the link piece 1c of the dead bolt 1 and the engaging piece 2
6b and the engaging piece 26c are linked to the upper end bent portion 24d of the latch hub stopper 24.

That is, when the dead bolt protrudes, the engaging piece 1c
Since 26a is pressed, the stopper lever 26 rotates counterclockwise, the engaging piece 26c engages with the upper end bent portion 24d and pulls it up, so that the latch hub stopper 24 moves upward,
The engaging portion 24a is engaged with the outer handle latch hub 23b. Reference numeral 23c is an engaging protrusion formed on the end of the outer handle latch hub 23b. Further, when the dead bolt 1 is retracted, the engaging piece 26b is pressed by the linking piece 1c, the stopper lever 26 is rotated clockwise, and the upper end bent portion 24d is pressed by the engaging piece 26b. Latch hub stopper 2
4 in the drawing, move it downwards, and
Release the engagement with 3b. Therefore, the latch hub stopper 24 moves up and down according to the appearance of the dead bolt 1, and the engaging portion 24a engages with the outer handle latch hub 23b.
The outer handle is released to prevent or rotate the outer handle latch hub 23b, and thereby the outer handle is restrained or free.

Reference numeral 27 is a release lever that is swingably provided in conjunction with the retractor 20 and is swingably provided on the shaft 18, and a pin 28 that is erected on a part of the retractor 20 is fitted into the coupling hole 27a. There is. 20c is an elongated hole formed in the retractor 20 for sliding. The release lever 27 is provided so as to be capable of engaging with the operating lever 4 in which the dead bolt 1 is in a protruding state, and swings clockwise when the retractor 20 moves backward to rotate the operating lever 4 counterclockwise. While returning to the old position, at the same time, the dead bolt 1 is put into the immersed state. This operation is performed when the inner handle is operated and the retractor 20 is retracted by the inner handle latch hub 23a. As the dead bolt 1 is retracted, the latch hub stopper 24 is also moved to the old position via the stopper lever 26. Since it is returned, the engagement state between the outer handle latch hub 23b and the latch hub stopper 24 is released, and the outer handle restrained state is released at the same time.

By the mechanism described above, when the dead bolt 1 is projected, the door lock is locked by disabling the operation of the outer handle, and when the inner handle is operated in this locked state, the dead bolt 1 is retracted and the outer handle is pulled out. The locked state is released, and the latch bolt 12 is further retracted to obtain a door lock that can be opened as it is.

Further, the mechanism that copes with the change of the right and left hand will be described. That is, in the above description, the upper stage of the latch hubs stacked in the upper and lower two stages has been described as the inner handle latch hub 23a, and the lower stage has been described as the outer handle latch hub 23b.
When the direction of 2a is changed by 180 ° and the right / left hand is changed, the latch hub 23 is also positioned inside out, and the outer latch hub for the outer handle is changed to the inner handle and the inner handle latch hub is changed to the outer handle. Therefore, the latch hub stopper 24
Also, the engagement partner of (2) will change, and this conversion means is required.

Therefore, in this embodiment, the latch hub stopper
24 is provided with a movable portion 29 in the direction of the handle axis, and the movable portion 29 is provided with the engaging portion 24a, and the movable portion can be selectively opposed to one of the latch hubs 23. There is.

That is, the latch hub stopper 24 is composed of the interlocking portion 30 and the movable portion 29 combined with the interlocking portion 30 by the pin 31, and the movable portion 29 moves in the vertical direction together with the interlocking portion 30 and the axis of the pin 31. It can be moved in any direction. 32
Is a self-changing lever that moves the movable portion 29 in the axial direction of the pin 31, and is locked by the mounting screw 33 and the knock 34.
It is swingably attached to the side surface of. A hand changing screw 32b is screwed to the tip bending portion 32a, and the head 32c can be operated by removing the front 5. On the front surface of the lock case 6, a horizontal hole 6a as shown in FIG.
Is located in any one of the circular holes 6a. 32d
Is a lever knock attached to the rear end of the self-changing lever 32, and is loosely fitted in the through hole 29a of the movable portion 29. Reference numeral 35 is a leaf spring for positioning the self-changing lever 32, and a punching 35a is formed so that it can be engaged with any one of a pair of engagement holes 32e formed in the self-changing lever 32.

When changing the hand, the front 5 is removed, the hand changing screw 32b is loosened, and the head 32c is positioned in the other circular hole of the lateral hole 6a. The movable part 29 can be moved in the axial direction of the pin 31 (axial direction of the handle) via the. Therefore, the movable part
The engaging portion 24a of 29 comes to face the other latch hub 23, and has a mechanism capable of coping with the change of hand. The reason why the operation is performed with the self-changing screw is to prevent the self-changing lever 32 from malfunctioning due to an external impact, etc.When changing the selfishness, loosen the screw as described above and tighten the narrow portion of the lateral hole 6a. If the head 32c is positioned inside this circular hole by passing through, and tightening the screw in the other circular hole, the self-changing lever does not malfunction even when an external impact is applied.

In addition, in FIG. 3, the latch operating lever 36 represented by the alternate long and short dash line is provided coaxially with the operating lever 4, and can be interlocked with the operating lever 4 by a knock 36a attached to the back surface.
The tip portion 36b is in contact with the projecting piece 37 of the latch connecting plate 12c. Therefore, when the cylinder or thumb turn is operated in the unlocking direction, the latch operating lever 36 rotates counterclockwise, and the tip 36b thereof pushes and retracts the latch connecting plate 12c, so that the latch bolt 12 can be retracted. Has become.

[Effects of the Invention] The door lock according to the present invention is as described above, and when the dead bolt is projected to be in the locked state, the outer handle is also restrained at the same time, and the operation cannot be performed. It is a highly safe door lock that allows you to immediately check the locked state and obtain the double locked state.

Further, when the release lever is provided as in claim 2, the dead bolt can be retracted and the restraint of the outer handle can be released only by operating the inner handle, so that the door can be unlocked and opened immediately. The door lock is not only convenient for use, but also suitable for escape in an emergency.

Further, the mechanism of claim 3 has an advantage that the right and left hand can be easily changed and the door can be mounted according to the mounting state of the door at the mounting site.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the door lock according to the present invention, in which the cover and the inner handle latch hub 23a are removed. FIG. 2 is a side view showing a locked state in which a dead bolt is projected and an outer handle is restrained, FIG. 3 is a partial side view showing another embodiment, and FIG. 4 is a front view of a retractor. , FIG. 5 is a cross-sectional view showing a state in which an inner handle latch hub and an outer handle latch hub are overlapped with each other, FIG. 6 (A) is a front view of an interlocking portion of a latch hub stopper, and FIG. 6 (B) is The bottom view, FIG. 7 (A) is a front view of the movable part of the latch hub stopper, FIG. 7 (B) is the same plan view, FIG. 8 is the bottom view of the hand change lever, and FIG. FIG. 7 is a partial front view of the front surface of the lock case showing a lateral hole for positioning the self-changing screw. 1 …… Dead bolt, 4 …… Operating lever 5 …… Front, 12 …… Latch bolt 20 …… Retractor, 23 …… Latch hub 23a …… Inner handle latch hub 23b …… Outer handle latch hub 24 …… Latch hub Stopper 24a …… Engagement part 27 …… Release lever 29 …… Movable part, 30 …… Interlocking part

Claims (2)

[Claims] 1. A dead bolt that can be retracted from the front by an actuating lever that rotates in conjunction with a thumb turn or a cylinder operation, and a latch hub that rotates in conjunction with an operation of the inner and outer handles so that it can be retracted at all times. In a door lock that has a retractor to which elastic force is applied in the front direction and a latch bolt that can be retracted from the front when the retractor retracts, the latch hub is used for the inner and outer handle latch hubs and the outer handle. Separated to the latch hub, each retractor can be operated independently.On the other hand, it has an engaging part that can be engaged and disengaged with the outer handle latch hub in the non-rotating position, and the outer handle latch hub can be rotated. With a latch hub stopper that can prevent
The engagement / disengagement operation of the latch hub stopper is interlocked with the withdrawal operation of the dead bolt through the interlocking member, and when the dead bolt is projected, the outer handle cannot be rotated and the retractor is operated by operating the inner handle. A door lock characterized by being provided with a release lever which is interlocked with this when retreating, and engaging the operating lever with the dead bolt in a protruding state to return the rotation so that the dead bolt can be retracted. 2. An independent rotation 2 interlocked with the operation of the inner and outer handles.
Two latch hubs are provided in an overlapping manner in the handle axis direction, and an engaging portion for the outer handle latch hub is provided in the movable portion of the latch hub stopper movably provided in the handle axis direction, and the movable portion is provided in either one of the latch hubs. The door lock according to claim 1, which can be selectively opposed to the door lock.