JPH0810136Y2 - Door lock - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a door lock used for a door whose one end can be opened and closed in the front-rear direction.

[Conventional technology]

Since it is desirable that a doorway in a room or the like can be used in a wider state, a door whose one end side turns in the front-back direction is often used for a person who opens and closes. For the above door, a lever type door lock may be adopted due to its good operability, and this lever type door lock holds the lever handle 60, 60 and turns as shown in FIG. 55. Latch bolt by moving
61 is moved to open and close the door.

However, while the above doors differ depending on the conditions of the doorway on the opening and closing sides, the door lock has the tip of the lever handle 60.60 on the center side of the door so that the lever handle 60.60 does not collide with the wall of the doorway. Need to point. Therefore, it is desirable that the door lock can be switched arbitrarily between right hand with the tip of the lever handle 60, 60 facing to the right side and left hand with the tip facing to the left side. The hand contact can be switched by the detachable contact restriction plate 62.

That is, when switching the left / right hand first, first screw 65
At the same time, the contact regulation plate 62 is removed, and the lever handle 60 is rotated in the opposite direction. Then, when the contact portion 64a of the rotation restricting member 64 that rotates together with the lever handle 60 is located on the opposite side, the contact restricting plate 62 that was previously removed is attached to the screw.
It is designed to be fixed at 65.

As a result, the conventional door lock can switch the left / right hand of the lever handle 60 by attaching / detaching the contact regulation plate 62, and even if the opening / closing side is reversed due to the change in the entrance / exit specifications, the same door lock can be used. It can be handled with a lock.

[Problems to be solved by the device]

However, in the above conventional door lock, the lever handle
When switching the right and left hand of 60, it is necessary to remove the contact restriction plate 62 together with the screw 65, and there is a possibility that the screw 65 and the contact restriction plate 62 may be lost when removed. Further, the contact regulation plate 62
Since the screw 65 is removed and attached by turning the screw 65 with a screwdriver, it may be a burden to the operator, and further improvement in workability is desired.

Furthermore, when shipped from the factory with the contact regulating plate 62 attached, the lever handle 60 crosses the longitudinal direction of the door lock body 63, so that the case for storing the door lock becomes larger. As a result, the efficiency of transportation and storage will decrease. On the other hand, when shipped from the factory with the contact regulation plate 62 removed, the lever handle 60 can be aligned with the longitudinal direction of the door lock body 63, which allows the case to be downsized, improving transport and storage efficiency. However, in this case, it is essential to confirm the presence or absence of parts at the time of shipping.

In addition, the contact restricting plate 62 includes the contact part 64 a of the rotation restricting member 64.
The screw 65 for fixing the contact regulating plate 62 is liable to be loosened by the vibration due to the opening and closing of the door. Therefore, if it becomes loose, it is necessary to disassemble the door lock, tighten the screw 65, and re-fix the contact regulation plate 62, so the door lock retains its fixed state even when vibration is applied. It is desired to be able to do it.

In this way, the conventional door lock can be handled with the same door lock by switching the left / right hand of the lever handle 60 when the opening / closing side is reversed due to the change of the entrance / exit specifications. At construction sites and the like where improvement in workability and cost reduction are always required, further ease of handling and cost reduction are demanded, and maintenance after installation is not required.

Therefore, in the present invention, it is not necessary to attach / detach the contact restricting plate 62 when switching the lever handle 60 between right and left, and the handling is facilitated, and the case is downsized even when the contact restricting plate 62 is attached at the time of shipment. By doing so, it is possible to improve the efficiency of transportation and storage and reduce costs, and further, even when vibration is applied, the contact regulation plate 62
The purpose of the present invention is to provide a door lock that can reliably hold the fixed state.

[Means for solving the problem]

In order to solve the above-mentioned problems, the door lock according to the present invention has a lever seat for moving the latch bolt forwards and backwards. A door lock having a lever handle in which a prismatic portion is formed at the tip of a cylindrical portion at the center of rotation while being loosely fitted in a circular hole and rotatably attached. A rotation restricting member that has a circumscribing circular hole that is substantially circumscribed, is freely rotatable independently of the lever handle, and has a contact portion formed in a bilaterally symmetrical shape and protruding outward in the radial direction; And a rotation stop member that is provided symmetrically on both sides in the course of normal rotation and is supported by a long seat, and a square hole that fits into the prismatic portion. Engageable with the member and engaged A movable engaging member that is movable to a position that avoids the movement and a biasing member that biases the movable engaging member toward the rotation restricting member are provided, while the movable engaging member engages with the rotation restricting member. When the lever handle rotates, the rotation restricting member rotates integrally with the moving engagement member, and the rotation is stopped by the contact of the contact portion with the rotation stop member. Further, when the engagement between the movable engaging member and the rotation restricting member is released, the lever handle is
It is characterized in that it is formed so that it can be switched between left and right hand by rotating it by 0 degree.

[Action]

According to the above configuration, the movable engagement member is pressed by the urging member and is engageable with the rotation restricting member,
It can be rotated together with the lever handle. And
When the movable engagement member is engaged with the rotation restricting member, the rotation restricting member rotates integrally with the moving engagement member in accordance with the rotation operation of the lever handle, and the rotation is caused by the contact portion. Is stopped by abutting against the rotation stopping member.

On the other hand, the rotation restricting member has a circumscribing circular hole that substantially circumscribes the prismatic portion of the lever handle and is freely rotatable independently of the lever handle. When the combination is manually released, the left / right hand can be switched by rotating the lever handle 180 degrees.

As a result, the rotation of the lever handle is restricted only when the movable engaging member and the rotation restricting member are engaged with each other, and it is possible to switch the left / right hand by changing the engaging position. It has become.

At this time, since the moving engagement member can move to a position that avoids engagement with the rotation restricting member, the rotation restricting member can change the engagement position without removing the moving engagement member. It will be possible. As a result, the door lock can be easily handled because the left / right hand of the lever handle can be switched only by moving the moving engagement member.

Further, the door lock can freely rotate the movable engaging member by moving the movable engaging member to a position where the movable engaging member is prevented from engaging with the rotation restricting member. It is possible to rotate the handle to a position that minimizes the volume. When the volume is set to the minimum, the case for storing the door lock can be downsized so that the cost can be reduced by transportation and storage. Further, since the movable engagement member is biased by the biasing member in the direction of the rotation restricting member, the engagement does not disengage even when vibration is applied, and maintenance after mounting on the door is unnecessary. It is possible to do.

[Embodiment 1] The following will describe one embodiment of the present invention with reference to FIGS. 1 to 25.

The door lock according to the present embodiment is mainly used for opening and closing a door in a room, and this door lock includes, as shown in FIG.
There is an indoor door lock 1 attached to the indoor surface of the door and an outdoor door lock 2 attached to the outdoor surface of the door. The indoor side door lock 1 and the outdoor side door lock 2 are arranged so as to face each other across both sides of the door, and the door is fixed between the indoor side door lock 1 and the outdoor side door lock 2. The latch member 3 is provided. The latch member 3 is provided with a latch bolt 12 which can be moved back and forth by a lever handle 10 of an indoor door lock 1 and a lever handle 8 of an outdoor door lock 2 which will be described later. When the door is closed, it is fitted in a latch hole (not shown) formed in the side wall.

The outdoor door lock 2 that moves the latch bolt 12 is
As shown in FIG. 25, there is a long seat 5 that comes into contact with the door. On the back side of this long seat 5, screw holes 27a and 27a are formed in the upper and lower parts as shown in FIGS. 1 and 2. The screw-engaged portions 27, 27 formed with are projectingly provided. On the other hand, on the front surface side of the long seat 5, a lever handle 8 to be gripped when the door is opened and closed.
And an emergency turn 11 for unlocking the locked state of the door from the outside, and the lever handle 8 is
The end portion on the long seat 5 side is rotatable about the rotation center in the A direction and the B direction.

The lever handle 8 is formed with a quadrangular prismatic lever protrusion 8a at the center of rotation.
24, as shown in FIG. 24, penetrates through the above-mentioned latch member 3. And the lever handle 8 is
By rotating in the direction A, the tip of the latch bolt 12 is moved into the latch member 3 to open the door, while by rotating in the direction B, the latch bolt 12 is rotated.
Is moved to the latch hole on the side wall to close the door.

Further, as shown in FIGS. 1 and 2, a spring 14 is penetrated through the lever protrusion 8a, and a sixth side is formed on the back surface side of the spring 14 opposite to the seat 5. As shown in the drawings and FIG. 7, a rotation restricting member 15, a wave washer 16, a washer 17, and a retaining ring 18 are provided in this order. Both ends of the spring 14 are bent outward in the radial direction, and when the left-right hand is set, one bent portion 14a is brought into contact with the protrusion 5a formed on the long seat 5. At the same time, the other bent portion 14b is brought into contact with the sub contact portion 15b of the rotation restricting member 15.

As shown in FIGS. 16 (a) and 16 (b), the sub-contact portion 15b is projecting outward in the radial direction and then bent in the long seat 5 direction. Spring 14 mentioned above
The bent portion 14b is brought into contact with the bent portion 14b, and when the lever handle 8 is rotated, the end portion is brought into contact with the contact regulating plate 19 which is a moving contact member. There is. A main contact portion 15a is provided on the rotation restricting member 15 so as to protrude outward in the radial direction so as to face the sub contact portion 15b. The end of the main contact portion 15a is restricted to contact. It is biased by a spring 14 so as to come into contact with the plate 19.

The rotation restricting member 15 having the main abutting portion 15a and the sub abutting portion 15b is formed with a hole 15c at the center thereof which substantially matches the shape of the lever protrusion 8a. Has a lever projection 8a penetrating therethrough. As a result, the rotation restricting member 15 is configured to rotate together with the lever handle 8 via the lever protrusion 8a, and both contact portions 15a and 15b.
By contacting the contact regulation plate 19, it is stopped at a predetermined position.

The rotation restricting member 15 is provided with a retaining ring 18 shown in FIG. 19 via the wave washer 16 shown in FIGS. 17A and 17B and the washer 17 shown in FIG.
The retaining ring 18 is fitted in a not-shown notch formed in the lever protrusion 8a. As a result, the spring 14 interposed between the retaining ring 18 and the long seat 5,
The rotation restricting member 15, the wave washer 16, and the washer 17 are designed to prevent loosening that occurs when an external force such as impact or vibration is applied.

The contact restricting plate 19 contacting the rotation restricting member 15 is
As shown in FIG. 20, both ends on the side of the rotation restricting member 15 are formed in an inclined pentagonal shape, and a penetrating hole 19a is formed in the center of the contact restricting plate 19. . Then, the contact regulation plate 19 is positioned by the protrusion 5c formed on the long seat 5 penetrating the penetrating hole 19a.

As shown in FIG. 6 and FIG. 7, the bush retaining ring 25 of FIG. 22 is fixed to the above-mentioned protrusion 5c on the rear surface side of the contact regulating plate 19, and the bush retaining ring 25 Contact regulation plate 19
Between the contact restriction plate 19 and the one end of the main contact portion 15a, the coil spring 26, which is the biasing member of FIG. It is installed. As a result, the contact restricting plate 19 can be moved to the front surface side and the rear surface side of the long seat 5, and as shown in FIGS. 3 and 4, the contact restricting plate 19 is moved to a position avoiding the seat and the rotation restricting member. It is also possible to overlap with the main contact portion 15a of 15.
Further, the coil spring 26 also prevents loosening that occurs when an external force such as impact or vibration is applied to the contact regulation plate 19.

The coil spring 26 is fixed by the bush retaining ring 25, but is not limited to this. For example, the main contact portion 15a is replaced by a screw and fixed by the head of this screw. It may be like this. The biasing member is not limited to the coil spring 26 described above, and may be a leaf spring or a disc spring, for example.

The emergency turn 11 provided on the surface of the long seat 9 together with the lever handle 8 is provided so as to penetrate from the front surface to the back surface of the long seat 5 at the end portion on the front surface side, as shown in FIGS. 1 and 2. Has a groove 11b into which a flat-blade screwdriver or the like can be fitted. On the other hand, on the back side of the emergency turn 11, a prismatic turn projecting part
11b is protruding from the end and the retaining ring 20 of FIG.
Is provided on the side peripheral surface. As a result, the emergency turn 11 is fixed to the long seat 5 by the retaining ring 20.

Between the retaining ring 20 and the long seat 5, a stopper 21 and a cam 22 are provided in this order from the long seat 5 side. As shown in FIG. 12, the stopper 21 has a rectangular shape on one end side. A first penetrating hole 21a and a second penetrating hole 21b having notches are formed. Then, as shown in FIG. 1, the turn protrusion 11a is formed to penetrate the first through hole 21a, and the long seat 5 is formed in the second through hole 21b. The central protrusion 5b is formed so as to penetrate therethrough.

As shown in FIGS. 13 (a) and 13 (b), the cam 22 provided on the back side of the stopper 21 has a stopper operating knock 22a formed on the stopper 21 side. 22a is inserted into the cutout portion of the first through hole 21a of the stopper 21. The stopper actuating knock 22a abuts on the upper end and the lower end of the first penetrating hole 21a in FIG. 12 to move the stopper 21 up and down.

Further, a spring receiver 22b is formed on the back side of the cam 22, and the spring receiver 22b is provided with one end portion of a spring 23 as shown in FIG. Further, the other end of the spring 23 has the above-mentioned central protrusion.
5b and is fixed by the bush retaining ring 24 of FIG. 15 provided on the central protrusion 5b.

On the other hand, as shown in FIG. 23, the indoor side door lock 1 attached to the indoor side has a long seat 9 that abuts on the door like the outdoor side door lock 2 described above. The long seat 9 has through holes 13 and 13 (see FIG. 11) formed in the upper and lower parts,
A screw 6.6 having a plus-shaped groove on its head is inserted into these through holes 13, 13. Then, as shown in FIG. 24, these screws 6, 6 are screwed into the screw-engagement portions 27, 27 of the outdoor door lock 2 so that the indoor door lock 1 and the outdoor door lock 2 are provided. And to conclude.

Further, on the surface of the long seat 9, there are provided a lever handle 10 which is gripped when the door is opened and closed, and a thumb turn 7 which restricts the opening and closing of the door to lock it.
Is rotatable in the C and D directions with the end on the side of the seat 9 as the center of rotation.

As shown in FIGS. 10 and 11, the lever handle 10 is formed with a quadrangular prismatic lever protrusion 10a at the center of rotation, and the lever protrusion 10a has a lever fitting hole. 10b is formed at the end. Then, as shown in FIG. 24, a lever protrusion 8a penetrating the latch member 3 is fitted into the lever fitting hole 10b, and the lever handle 10 serves as an outdoor door. It is adapted to rotate in conjunction with the lever handle 8 of the lock 2.

Further, as shown in FIGS. 10 and 11, the lever 14, the rotation restricting member 15, the wave washer 16, the washer 17, and the retaining ring 18 are arranged on the lever protrusion 10a in this order from the long seat 9 side. It is installed throughout. In the lever handle 10, the main contact portion 15a and the sub contact portion 15b of the rotation restricting member 15 are contact restricting plates.
The contact regulating plate 19 is stopped at a predetermined position by abutting against the 19, and the contact regulating plate 19 is movable to the front surface side and the back surface side of the long seat 9.

In addition, the thumb turn 7 provided on the front surface of the long seat 9 together with the lever handle 10 is provided with a thumb turn projection 7a on the back surface side of the long seat 9. A retaining ring 20 is fitted in a groove formed on the side peripheral surface of the thumb turn protrusion 7a, and the retaining ring 20 locks the thumb turn protrusion 7a to the long seat 9. Further, a fitting hole 7b having a rectangular opening is formed at the end of the thumb-turn protrusion 7a, and the fitting hole 7b is provided with an outdoor door lock as shown in FIG. The turn protrusion 11a of the emergency turn 11 provided on the No. 2 is fitted. As a result, Samturn 7 and Emergency Turn 11 are
It is designed to rotate together.

The operation of the door lock in the above configuration will be described below.

First, when shipping from a factory or the like, as shown in FIG. 3, FIG. 6 and FIG. 7, the end portion of the contact regulation plate 19 on the rotation regulation member 15 side is moved to the back surface side and rotated. The main contact portion 15a of the movement restricting member 15 and the contact restricting plate 19 are overlapped. As a result, in the outdoor door lock 2, as shown in FIGS. 4 and 5, the lever handle 8 can be aligned with the longitudinal direction of the long seat 5, and a case for housing the outdoor door lock 2 can be provided. It is possible to reduce the volume to the minimum size.

Next, when setting the left and right hand of the outdoor door lock 2,
The lever handle 8 is rotated according to the opening / closing side of the door. That is, for example, when the left side of the door can be opened and closed, as shown in FIGS. 1 and 2, the lever handle 8 is rotated rightward when viewed from the front side of the long seat 5 to be right-handed. Will be done. This rotation also causes the rotation restricting member 15 fixed to the lever protrusion 8a of the lever handle 8 to rotate, so that the contact restricting plate 19 superposed on the main contact part 15a is moved to the main contact part. It will be removed from 15a.
Then, the contact restriction plate 19 and the main contact portion 15a are separated from each other.
Since the contact restricting plate 19 is biased by the coil spring 26 in the long seat 5 direction, it is possible to move the contact restricting plate 19 in the long seat 5 direction to a position where it comes into contact with one end of the main contact portion 15a. Become.

Further, when the lever handle 8 is rotated, the spring 14 provided on the lever protrusion 8a contacts the protrusion 5a of the long seat 5 with one bent portion 14a and the other bent portion 14b.
Comes into contact with the sub contact portion 15b of the rotation restricting member 15. As a result, the lever handle 8 is always urged in the B direction by the spring 14, and the lever handle 8
When is rotated in the A direction, it returns to the position where the contact restricting plate 19 and the main contact portion 15a of the rotating restricting member 15 contact each other.

Next, when the door is locked, the thumb turn 7 shown in FIG. 24 is rotated. At this time, the thumb turn 7 is linked to the emergency turn 11 by the thumb turn protrusion 7a and the turn protrusion 11a. Therefore, when the thumb turn 7 is rotated, the cam 22 fixed to the turn protrusion 11a of the emergency turn 11 is rotated as shown in FIGS. 8 and 9. The rotation of the cam 22 causes the stopper 21 to move in the direction of the rotation restricting member 15, and the moved stopper 21 has an end where the main contact portion 15a and the contact restricting plate 19 are in contact with each other. The rotation of the rotation restricting member 15 is restricted by coming into contact with the other end of the part. As a result, the lever handle 8 is fixed by the rotation restricting member 15 held by the stopper 21 and the contact restricting plate 19, and the door is rotated by the thumb turn 7 or the emergency turn 11 shown in FIG. The locked state will be continued until it is done.

On the other hand, when the lever handle 8 is switched to the left hand by changing the opening / closing side of the door, the contact regulating plate 19 is moved in the direction of the retaining ring 18 by a driver or the like, and as shown in FIG. The contact restricting plate 19 is moved to a position where it avoids contact with the main contact portion 15a of the rotation restricting member 15. After this,
The rotation restricting member 15 is rotated by the rotation of the lever handle 8,
The contact restriction plate 19 is superposed on the main contact portion 15a.
After the outdoor door lock 2 has the same shape as that at the time of shipment,
The lever handle 8 is turned in the direction opposite to the turning direction when the right hand is used as described above, so that the left hand outdoor door lock 2 is obtained.

As described above, in the door lock of this embodiment, the contact regulating plate 19 can be moved in the front-rear direction with respect to the long seat 5, and this movement causes the contact regulating plate 19 to move to the main contact portion of the rotation regulating member 15. It is possible to stack on 15a. Therefore, the door lock can be switched between the left and right hand positions with the contact regulating plate 19 attached to the long seat 5, and is easy to handle. Further, since the contact restricting plate 19 is urged in the contact position direction by the coil spring 26 in which the portion contacting the main contact portion 15a of the rotation restricting member 15 is locked by the bush retaining ring 25, The loosening due to vibration and shock is prevented, and the maintenance due to the loosening after mounting is unnecessary.

Further, in the door lock, as shown in FIG. 5, for example, since the lever handle 8 can be aligned with the longitudinal direction of the long seat 5, the case can be downsized,
As a result, the cost can be reduced by effectively utilizing the space for transportation and storage.

[Embodiment 2] Another embodiment of the present invention will be described below with reference to FIGS. 26 to 35. For convenience of explanation, members having the same functions as those shown in the drawings of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

In the door lock according to this embodiment, as shown in FIGS. 26 and 27, the main contact portion 15 of the rotation restricting member 15 is the same as in the first embodiment.
A contact regulating plate 28 that is a moving contact member that abuts on a is provided. The contact regulating plate 28 has a structure shown in FIG.
As shown in (b), a through hole 28a whose longitudinal direction coincides with the direction of the rotation restricting member 15 is formed, and the through hole 28a is formed.
The contact portion 28b bent in the direction of the long seat 5 is formed at the end portion in the direction opposite to the direction of the rotation restricting member 15. Also,
The end 28d of the contact regulating plate 28 on the rotation regulating member 15 side is formed in an arc shape, while the other end of the contact regulating plate 28 is
The pressing portion 28c is bent in the direction opposite to the bending direction of the contact portion 28b.

The protrusion 5c of the long seat 5 is provided through the through hole 28a of the contact regulating plate 28, and the contact regulating plate 28 is rotated by the bush retaining ring 25 provided on the protrusion 5c. It is locked so that it can move in any direction. In addition, the pressing portion 28c of the contact regulating plate 28
A coil spring 29, which is a biasing member, is provided between the coil spring 29 and the screw screwing portion 27.
Is configured to urge the contact restricting plate 28 in the direction of the rotation restricting member 15, which is the position direction in which the contact restricting plate 28 can contact the end of the main contact portion 15a.

The contact regulating plate 28 and the coil spring 29 described above are used.
Are provided on both the outdoor door lock 2 and the indoor door lock, and the other configurations are similar to those of the first embodiment. The biasing member is not limited to the coil spring 29 described above, and may be a leaf spring or a disc spring, for example.

The operation of the door lock in the above configuration will be described below.

First, when shipping from a factory or the like, as shown in FIG. 31, FIG. 34, and FIG. 35, the contact regulation plate 28 is in the direction of the screw engagement portion 27 opposite to the direction of the rotation regulation member 15. Moved to
The end 28d of the contact restricting plate 28 is the main contact part 15a of the rotation restricting member 15.
Will be brought into contact with the peripheral surface of. This allows the outdoor door lock 2 to align the lever handle 8 in the longitudinal direction of the long seat 5, as shown in FIGS. It becomes possible to miniaturize with a minimum volume.

Next, when setting the left and right hand of the outdoor door lock 2,
The lever handle 8 is rotated according to the opening / closing side of the door. That is, for example, when the left side of the door can be opened and closed, as shown in FIGS. 26 and 27, the lever handle 8 is rotated rightward when viewed from the front side of the long seat 5 to be right-handed. Will be done. This rotation also rotates the rotation restricting member 15 fixed to the lever protrusion 8a of the lever handle 8, and the main contact portion 15a is disengaged from the end of the contact restricting plate 28. . And this contact regulation plate
28 and the main contact portion 15a are disengaged from each other as shown in FIGS. Contact control plate 28
Will be moved to a position where it comes into contact with one end of the main contact portion 15a. As a result, the rotation of the lever handle 8 is restricted by the contact restriction plate 28 and the rotation restriction member 15, and the lever handle 8 can be used as a right-handed tool.

On the other hand, when the lever handle 8 is switched to the left hand by changing the opening / closing side of the door or the like, the pressing portion 28c of the contact restricting plate 28 is pressed toward the screw engaging portion 27, and the contact restricting plate 28 is pressed.
Will be moved to a position where the rotation restricting member 15 avoids contact with the main contact portion 15a. Then, the rotation restricting member 15
Is rotated, and as shown in FIG. 31, the contact restricting plate 28 is brought into contact with the peripheral surface of the main contact portion 15a to have the same form as that at the time of shipping. After that, the lever handle 8 is turned in the direction opposite to the turning direction when using the above-mentioned right-handed hand, so that the left-handed outdoor side door lock 2 is obtained.

In this way, in the door lock of this embodiment, the contact regulating plate 28 can be moved in the longitudinal direction of the long seat 5, and this movement causes the contact regulating plate 28 to move to the main contact portion of the rotation regulating member 15. It is possible to make contact with the peripheral surface of 15a. Therefore, the door lock can be switched between the left and right hand positions with the contact regulating plate 28 attached to the long seat 5, and is easy to handle. Further, since the contact restricting plate 28 is biased by the coil spring 29 toward the rotation restricting member 15, loosening due to vibration or impact is prevented, and maintenance due to loosening after mounting is unnecessary. ing.

Further, in the door lock, as shown in FIG. 33, for example, since the lever handle 8 can be aligned with the longitudinal direction of the long seat 5, the case can be downsized,
As a result, the cost can be reduced by effectively utilizing the space for transportation and storage.

[Embodiment 3] The following description will explain still another embodiment of the present invention with reference to FIGS. 36 to 54. For convenience of explanation, members having the same functions as those shown in the drawings of the first embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The door lock according to this embodiment includes an outdoor door lock 32 shown in FIG. 36 and an indoor door lock 31 shown in FIG. As shown in FIGS. 36 and 37, the outdoor door lock 32 has a long seat 35 that comes into contact with the door.
On the back surface side of the, the screw engaging portions 27, 27 having the screw holes 27a, 27a formed in the upper and lower portions are provided in a protruding manner. On the other hand,
On the surface side of 35, a lever handle 8 having a lever protrusion 8a formed at the center of rotation is provided.

That is, the lever handle 8 is composed of a lever portion 8b and a lever protrusion portion 8a as a rotation center portion. The lever portion of the lever handle 8 in the lever protrusion 8a
On the 8b side, there is a cylindrical portion 8c having a circular cross section, and as shown in FIG. 37, a guide hole portion as a circular hole formed in the long seat 35.
It is designed to be freely fitted into the 35b. Also,
The prismatic portion 8d formed by extending from the cylindrical portion 8c is formed in a quadrangular prismatic shape as shown in FIG.

The lever protrusion 8a is provided with the spring 14 shown in FIG. 45. The spring 14 shown in FIGS. 38 and 39 is provided on the rear surface side of the spring 14 in the opposite direction to the seat 35. As described above, the rotation restricting member 45 that rotates independently of the lever protrusion 8a, the clutch plate 33 that is a moving engagement member that rotates integrally with the lever protrusion 8a, and the rotation restricting member that rotates the clutch plate 33 are used. 45
Wave washer 16 and 49 of FIG. 48, which are biasing members for biasing in the direction
The washer 17 in the figure and the retaining ring 18 in FIG. 50 are provided in this order.

That is, the rotation restricting member 45 has a prismatic portion at the center.
A circumscribing circular hole 45c that substantially circumscribes 8d is provided. As a result, the rotation restricting member 45 can be freely fitted into the prismatic portion 8d, and can freely rotate independently of the lever protrusion 8a. On the other hand, the clutch plate 33
At the center, a square hole 33b is formed as a square hole along the square outer peripheral shape of the square column portion 8d, whereby the clutch plate 33 is slidable on the square column portion 8d. At the same time, it is configured to rotate integrally with the lever protrusion 8a.

As shown in FIG. 36, both ends of the spring 14 are bent outward in the radial direction.
4a is supported by the long seat 35 and has a symmetrically formed protrusion 35a.
・ It is designed to come into contact with the lower end surface of 35a. The biasing member is not limited to the above-mentioned wave washer 16, and may be, for example, a coil spring, a leaf spring, or a disc spring.

Further, as shown in FIGS. 46 (a) and 46 (b), the rotation restricting member 45 is provided with a contact portion 45a protruding outward in the radial direction so as to be bilaterally symmetrical. Both ends of the portion 45a in the rotation direction are, for example, when the lever handle 8 is rotated by about 45 degrees in order to move the latch bolt 12 forward and backward,
The rotation operation is stopped by contacting the upper end surfaces of the protrusions 35a, 35a as the rotation stopping member. By rotating the lever handle 8 by about 45 degrees as described above, an elastic force is applied to the spring 14, and a force for returning the lever handle 8 to the original position works.

Further, on the rotation restricting member 45, a pair of protrusions 45b and 45b are formed at left and right symmetrical positions in the clutch plate 33 direction,
As shown in FIGS. 47 (a) and 47 (b), the clutch plate 33 is formed with a pair of fitting holes 33a and 33a. And
The above-mentioned protrusions 45b and 45b are fitted and engaged with these fitting holes 33a and 33a.

The spring 14, the rotation restricting member 45, the clutch plate 33, the wave washer 16, the washer 17, and the retaining ring 18 are also provided on the indoor side door lock 31, as shown in FIGS. 43 and 44. The other configurations are similar to those of the first embodiment.

The operation of the door lock in the above configuration will be described below.

First, when shipping from factories, etc.,
As shown in FIG. 40, the clutch plate 33 is moved in the direction of the retaining ring 18 to a position avoiding the engagement with the rotation restricting member 45, and the clutch plate 33 and the rotation restricting member 45 are separated. It
As a result, since the rotation of the lever handle 8 is not restricted by the rotation restricting member 45, the lever handle 8 can be aligned with the longitudinal direction of the long seat 5, as shown in FIGS. 41 and 42. Therefore, the case for housing the outdoor door lock 2 can be miniaturized with the minimum volume.

Next, when setting the left and right hand of the outdoor door lock 2,
The lever handle 8 is rotated 90 degrees according to the opening / closing side of the door. That is, for example, when the left side of the door can be opened and closed, as shown in FIGS. 36 and 37, the lever handle 8 of the outdoor door lock 32 is rotated to the right side when viewed from the front side of the seat 35. While being moved to the right, the door lock 31 on the indoor side is locked by the lever handle as shown in FIGS. 43 and 44.
10 is rotated 180 degrees to the left when viewed from the surface side of the long seat 36, and is left-handed.

The above-mentioned rotation is the lever protrusion of the lever handle 8/10.
The clutch plates 33 penetrating the 8a and 10a are also rotated, and the rotation of the clutch plates 33 causes the clutch plates 33 to rotate by the wave washers 16 as shown in FIG. Since it is biased in the direction, the fitting holes 33a, 33a of the clutch plate 33 are fitted into the protrusions 45b, 45b of the rotation restricting member 45 at a predetermined position. As a result, the rotation restricting member 45 is rotated integrally with the clutch plate 33 by being engaged with the clutch plate 33, so that the outdoor side door lock 32 and the indoor side door lock 31.
As shown in FIG. 36 and FIG. 43, right hand and left hand are set.

On the other hand, when the left and right sides of the door lock are switched by changing the opening / closing side of the door, for example, as for the outdoor door lock 32, the clutch plate 33 is moved in the direction of the retaining ring 18 as shown in FIG. The protrusions 45b and 45b of the rotation restricting member 45 are pulled out from the fitting holes 33a and 33a of the plate 33. As a result, the clutch plate 33 and the rotation restricting member 45 are disengaged from each other and separated from each other, and the outdoor door lock 32 has the lever handle 8 similar to that at the time of shipment as shown in FIG. It becomes possible to return to the form of. Then, the outdoor side door lock 2 can be set to the left hand by rotating the lever handle 8 by 90 degrees in the direction opposite to the rotation direction when the lever handle 8 is used in the right hand. .

As described above, the door lock of the present embodiment can be easily handled because the left and right hands can be switched by engaging and separating the clutch plate 33 and the rotation restricting member 45 by the movement of the clutch plate 33. Has become. Further, since the clutch plate 33 is biased by the wave washer 16 toward the rotation restricting member 45, the clutch plate 33 and the rotation restricting member 45 are prevented from being loosened due to vibration or impact. No need for maintenance due to loosening after installation.

Further, in the door lock, as shown in FIG. 42, for example, since the lever handle 8 can be aligned with the longitudinal direction of the seat 32, the case can be downsized,
As a result, the cost can be reduced by effectively utilizing the space for transportation and storage.

In this embodiment, as shown in FIG. 38, the rotation restricting member 45 is formed with the projections 45b and 45b, and the clutch plate 33
Although the fitting holes 33a and 33a are formed in, the present invention is not limited to this. That is, as shown in FIGS. 53 (a) and 53 (b), while the fitting holes 46a / 46a are formed in the rotation restricting member 46, as shown in FIGS. 54 (a) and 54 (b), Clutch plate 47
The protrusions 47a and 47a may be formed on the. Then, in this case, from the state where the rotation restricting member 46 and the clutch plate 47 in FIG. 51 are separated, as shown in FIG. 52, the clutch is fitted in the fitting holes 46a and 46a of the rotation restricting member 46. Protrusion 47a ・ 4 of plate 47
When the 7a is fitted, the rotation restricting member 46 becomes the clutch plate 47.
It will rotate together with.

[Effect of device]

As described above, the door lock according to the present invention has the circumscribed circular hole in the prismatic portion that substantially circumscribes the prismatic portion, is freely rotatable independently of the lever handle, and is radially outward. A rotation restricting member in which a protruding contact portion is formed in a left-right symmetrical shape, a rotation stop member provided in left-right symmetry on both sides of the contact portion in the forward and reverse rotation direction and supported by a long seat, and the prism. And a movable engaging member that has a rectangular hole that fits in the portion and that can rotate with the lever handle and that can engage with the rotation restricting member and that can move to a position that avoids the engagement. A biasing member for biasing the rotation restricting member in the direction of the rotation restricting member, and when the movable engaging member is engaged with the rotation restricting member, the rotation restricting member is moved in accordance with the rotation operation of the lever handle. It rotates integrally with the moving engagement member, and the rotation is the rotation stop portion of the contact portion. When the lever is rotated 180 degrees when the movable engaging member and the rotation restricting member are disengaged from each other, the left and right hand can be switched. Is.

As a result, the movable engaging member that restricts the rotation of the lever handle by engaging the rotation restricting member can be moved to a position that avoids engagement with the rotation restricting member, so that the moving engaging member does not have to be removed. However, the left and right hand of the lever handle can be switched by changing the engaging position of the rotation restricting member and the movable engaging member, which is easy to handle. Further, since the rotation restricting member is freely rotated by the movement of the movable engaging member, it is possible to rotate the lever handle that rotates together with the rotation restricting member to a position where the volume is minimum. Since the case for storing the door lock can be downsized, the cost can be reduced. Furthermore, since the movable engagement member is biased toward the rotation restricting member, the engagement does not disengage even when vibration is applied, and it becomes possible to eliminate the need for maintenance after mounting on the door. Has the effect.

[Brief description of drawings]

1 to 25 show an embodiment of the present invention. FIG. 1 is a rear view of the outdoor door lock. FIG. 2 is a sectional view of the exterior door lock in FIG. 1 taken along the line XX ′. FIG. 3 is a rear view of the outdoor door lock. FIG. 4 is a cross-sectional view taken along the line XX ′ of the outdoor door lock in FIG. FIG. 5 is a front view of the outdoor door lock. FIG. 6 is a rear view of a main part of the outdoor door lock. FIG. 7 is an X- showing the main part of the outdoor door lock in FIG.
It is a sectional view taken along line X '. FIG. 8 is a rear view of the outdoor door lock. FIG. 9 is a sectional view of the exterior door lock in FIG. 8 taken along the line XX ′. FIG. 10 is a rear view of the indoor door lock. FIG. 11 is a sectional view taken along the line XX ′ of the indoor door lock in FIG. FIG. 12 is a plan view of the stopper. FIG. 13 (a) is a front view of the cam. FIG. 13 (b) is a plan view of the cam. FIG. 14 is a plan view of the retaining ring. FIG. 15 is a plan view of the bush retaining ring. FIG. 16 (a) is a front view of the rotation restricting member. FIG. 16 (b) is a plan view of the rotation restricting member. FIG. 17 (a) is a front view of the wave washer. FIG. 17 (b) is a plan view of the wave washer. FIG. 18 is a plan view of the washer. FIG. 19 is a plan view of the retaining ring. FIG. 20 is a plan view of the contact regulating plate. FIG. 21 is a front view of the coil spring. FIG. 22 is a plan view of the bush retaining ring. FIG. 23 is a front view of the indoor side door lock. FIG. 24 is a side view of the indoor door lock and the outdoor door lock. FIG. 25 is a front view of the outdoor door lock. 26 to 35 show another embodiment of the present invention. FIG. 26 is a rear view of the outdoor door lock. FIG. 27 is a sectional view of the exterior door lock in FIG. 26 taken along the line XX ′. FIG. 28 (a) is a plan view of the contact regulating plate. FIG. 28 (b) shows the contact regulating plate X in FIG. 28 (a).
FIG. 7 is a cross-sectional view taken along the line X ′ of FIG. FIG. 29 is a rear view of the main parts of the outdoor door lock. FIG. 30 is a view showing the main part of the outdoor door lock in FIG.
It is a sectional view taken along line X '. FIG. 31 is a rear view of the outdoor door lock. FIG. 32 is a cross-sectional view of the exterior door lock in FIG. 31 taken along the line XX ′. FIG. 33 is a front view of the outdoor door lock. FIG. 34 is a rear view of the main parts of the outdoor door lock. FIG. 35 is a view showing the main part of the outdoor door lock in FIG.
It is a sectional view taken along line X '. 36 to 54 show still another embodiment of the present invention. FIG. 36 is a rear view of the outdoor door lock. FIG. 37 is a sectional view of the exterior door lock in FIG. 36 taken along the line XX ′. 38 and 39 are cross-sectional views of the outdoor door lock. FIG. 40 is a rear view of the outdoor door lock. 41 is a cross-sectional view taken along the line XX ′ of the outdoor door lock in FIG. 40. FIG. 42 is a front view of the outdoor door lock. FIG. 43 is a rear view of the indoor side door lock. FIG. 44 is a cross-sectional view taken along the line XX ′ of the interior door lock in FIG. 43. FIG. 45 is a plan view of the spring. FIG. 46 (a) is a plan view of the rotation restricting member. FIG. 46 (b) is a sectional view of the rotation restricting member in FIG. 46 (a) taken along the line XX '. FIG. 47 (a) is a plan view of the clutch plate. FIG. 47 (b) shows the clutch plate X in FIG. 47 (a).
FIG. 7 is a cross-sectional view taken along the line X ′ of FIG. FIG. 48 is a plan view of a wave washer. FIG. 49 is a plan view of the washer. FIG. 50 is a plan view of the retaining ring. 51 and 52 are cross-sectional views of the outdoor door lock. FIG. 53 (a) is a plan view of the rotation restricting member. FIG. 53 (b) is a sectional view taken along the line XX 'of the rotation restricting member in FIG. 53 (a). FIG. 54 (a) is a plan view of the clutch plate. Fig. 54 (b) shows the clutch plate X in Fig. 54 (a).
FIG. 7 is a cross-sectional view taken along the line X ′ of FIG. FIG. 55 shows a conventional example and is an exploded perspective view of a door lock. 1-31 is an interior door lock, 2-32 is an exterior door lock, 3 is a latch member, 4 is a door, 5.9.35.36 is a long seat, 7 is a thumb turn, 8.10 is a lever handle, 11 is Emergency turn, 12 is a latch bolt, 14 is a spring, 15 is a rotation restricting member, 15a is a main contact portion, 15b is a sub contact portion, 16 is a washer,
17 is a washer, 18 is a retaining ring, 19 is a contact regulating plate (moving contact member), 20 is a retaining ring, 21 is a stopper, 22 is an outdoor door lock,
23 is a spring, 24/25 is a bush retaining ring, 26/29 is a coil spring, 28 is a contact regulating plate (moving contact member), 29
Are coil springs (biasing members), 33 and 47 are clutch plates (moving engagement members), and 45 and 46 are rotation restricting members.

Claims (1)

[Scope of utility model registration request] 1. A lever handle for advancing and retracting a latch bolt has a rotation center portion loosely fitted into a circular hole of a long seat provided on each of front and back sides of a door by a circular column section and rotatably mounted. On the other hand, in a door lock having a lever handle in which a prismatic portion is formed at the tip of a cylindrical portion at the center of rotation, the prismatic portion has a circumscribing circular hole that substantially circumscribes the prismatic portion. A rotation restricting member that has a contact portion that is rotatable independently of the handle and that protrudes outward in the radial direction is formed in a bilaterally symmetrical shape, and left and right on both sides of the contact portion in the forward and reverse rotation directions. A rotation stop member that is symmetrically provided and is supported by a long seat, and a square hole that fits into the prismatic portion, can rotate together with the lever handle and can engage with the rotation restricting member, and can engage with the rotation restricting member. Moving engagement that can be moved to the avoiding position A member and an urging member for urging the moving engagement member toward the rotation restricting member are provided, while the lever handle rotates when the moving engagement member is engaged with the rotation restricting member. With the operation, the rotation restricting member rotates integrally with the moving engagement member, and the rotation is stopped by the contact of the contact portion with the rotation stop member. A door lock characterized in that it is formed so that a left-right hand can be switched by rotating the lever handle 180 degrees when the engagement with the restriction member is released.