JPH0341019Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a box lock type door lock with a push button for locking, which is attached to, for example, a toilet door.

[Conventional device]

A cylindrical lock type lock is usually used for the lock attached to the toilet door.

However, in this type of lock, the latch component and the lock body are each made into a unit and have different configurations, which not only increases the number of parts and increases costs, but also increases the number of parts. The more that there is, the more the component parts will not function smoothly due to rust, rattling, etc.
The disadvantage was that the number of causes of failure increased.

Therefore, in recent years, a box lock type door lock with a push button for locking has been proposed.
Publication No. 103363).

[Problem to be solved by the invention] However, in the case of this door lock, the locking/unlocking mechanism is built in a complicated structure from the lock's grip ball to the latch case, so the number of man-hours required for assembling the door lock is reduced. This resulted in an increase in manufacturing costs.

The present invention was developed in consideration of the above-mentioned conventional problems, and the lock can be unlocked by rotating the indoor knob either clockwise or counterclockwise. In addition, in an emergency, the lock can be easily unlocked even from outside, and the locking/unlocking mechanism is built into the lock's exterior body, reducing the number of steps needed to assemble the lock.Furthermore, the reduced number of component parts reduces the risk of failure. The purpose of this invention is to provide a door lock that reduces the number of causes and reduces manufacturing costs.

[Means to solve the problem]

In the door lock of the present invention, the latch action pieces of the indoor and outdoor rollbacks, which are integrally provided on the indoor and outdoor knobs, are both inserted into the latch case, and the latch is locked by rotating each latch action piece. The door lock is provided with a door lock that can be freely retracted and retracted, and is rotatably provided within a predetermined angular range inside the outdoor roll bag, and has a first notch near the indoor end thereof, and further has a first notch. a locator having a stepped recess for locking formed by cutting into one side in the circumferential direction from a first notch in the outdoor end of the locator; a first notch of the locator; It engages with a second notch provided in the outdoor roll bag in a relatively rotatable manner so that it can move forward and backward in the axial direction within these first and second notches, and the interior can be moved back and forth within the first and second notches. a stopper having a locking protrusion that can be engaged with the stepped locking recess when the stopper is displaced to the outer end; and a stopper that overlaps the stopper from the indoor side and is engaged with the first and second notches. It is configured to be able to freely advance and retreat in the axial direction within the first and second notches, and to be relatively rotatable within the first notch, and is provided on the fixed side member when displaced to the outdoor side end within the first and second notches. a locking piece that is locked in the locking portion and prohibits rotation of the outdoor knob; A torsion compression spring that locks the locking protrusion in the locking stepped recess when displaced to the outdoor end within the first notch; a locking push button that is abutted from the inside and is pushed toward the outdoor side to displace the locking piece and stopper toward the outdoor side within the first and second notches; and a locking push button that is torsionally compressed. A compression spring that biases toward the outdoor side with an axial biasing force that is weaker than that of the spring, and a compression spring that is provided at the tip of the latch action piece of the indoor roll bag and that is inserted into the first notch of the locator and pushed to one side in the circumferential direction. The indoor knob is placed between the first notch side wall and the stopper so that the first notch side wall is located and the stopper is located on the other side in the circumferential direction. When rotated, the locator is rotated to one side in the circumferential direction to release the locked state between the locking protrusion and the stepped locking recess, while the indoor knob is rotated in the circumferential direction. A tip acting portion that causes the stopper to rotate to the other side in the circumferential direction to release the locked state between the locking protrusion and the stepped locking recess when rotated to the other side; and a chamber of the locator. an emergency unlocking button which is protruded from the outer end and releases the locked state between the locking protrusion and the stepped locking recess by rotating the locator from outside to one side in the circumferential direction; It is characterized by having

[Effect]

According to the above configuration, when the stopper and the locking piece are displaced toward the indoor end within the first and second notches, the locking piece is in an unlocked state in which it is removed from the locking part of the fixed side member. When the outdoor side knob is rotated to one side or the other side in the circumferential direction, the latch action piece is rotated via the outdoor side roll back, making it possible to open and close the door. On the other hand, by rotating the indoor knob to one side or the other in the circumferential direction, the latch action piece provided on the indoor roll bag is also rotated, and the latch is moved in and out.

Next, when locking the door, when the lock push button is pushed from the indoor side toward the outdoor side, the stopper and locking piece are moved through the operating shaft to the outdoor side end within the first and second notches. Displace. When the stopper reaches the outdoor end within the first and second notches, the stopper is biased by the torsion compression spring and rotates to one side in the circumferential direction, and accordingly, the stopper is rotated to one side in the circumferential direction. The locking protrusion is locked in the locking stepped recess of the locator. In this state, even if the pressing force on the locking push button is released, the locator resists the urging force of the torsion compression spring toward the indoor side and moves to the first and second positions.
It is locked and held at the outdoor end of the notch and does not move in the axial direction. On the other hand, the locking piece is held at the outdoor side ends of the first and second notches by the urging force of the compression spring toward the outdoor side, and therefore, the locking piece is locked by the locking part of the fixed side member. state. In this state, the locking piece is engaged with both the locking part and the second notch of the outdoor roll bag, and as described above,
The locking piece can be rotated relative to the first notch provided in the locator, and the locking piece and the second notch can be rotated relative to each other.
Only axial movement is possible between the notch and relative rotation is prohibited, so the outdoor rollback,
In other words, the outdoor knob cannot be rotated.

Next, when unlocking from the indoor side, when the indoor knob is rotated to one side in the circumferential direction, a first notch is formed on one side in the circumferential direction of the tip acting part of the latch acting piece of the indoor knob. Since the side wall is located, the locator is rotated to one side in the circumferential direction, and the locking state between the locking protrusion and the locking stepped recess is released. , the stopper and the locking piece are displaced within the first and second notches to the indoor end by the biasing force toward the indoor side of the torsion compression spring (stronger than the biasing force toward the outdoor side of the compression spring). As a result, the locking piece is removed from the locking portion, so that the outdoor side rollback, in other words, the outdoor side knob can be rotated in an unlocked state.

Furthermore, when the indoor knob is rotated from the locked state to the other side in the circumferential direction, the stopper is located adjacent to the other side in the circumferential direction of the tip acting part, so that the stopper is rotated in the circumferential direction. As a result, the locking protrusion and the stepped locking recess are released from the locking state, so that the stopper and The locking piece is displaced toward the indoor side and becomes unlocked.

Furthermore, in an emergency, the locator is rotated to one side in the circumferential direction by rotating the emergency unlock button connected to the locator from the outdoor side to one side in the circumferential direction, Can be unlocked.

〔Example〕

An embodiment of the present invention will be described based on the drawings.
It is as follows.

As shown in FIG. 1, the indoor knob 1 has a knob retainer 1a that is rotatably fitted into an indoor throne 3 that projects from the door 2. As shown in FIG. A cylindrical indoor roll bag 4 is integrally fitted onto the inner periphery of the knob retainer 1a. A cylindrical half-shaped latch action piece 5 is integrally formed at the outdoor end of the indoor roll bag 4. As shown in FIG. When the latch action piece 5 penetrating the inside of the latch case 6 embedded in the door 2 is rotated clockwise or counterclockwise, a latch (not shown) built in the latch case 6 comes out and retracts, causing the door to open. 2
It is constructed so that it can be opened and closed from the indoor side.

On the other hand, a knob retainer 7a of the outdoor knob 7 is rotatably fitted into an outdoor throne 8 protruding from the door 2. A cylindrical outdoor roll bag 9 is integrally fitted into the inner periphery of the knob retainer 7a. The indoor side end of the outdoor roll bag 9 forms a cylindrical half-shaped latch action piece 10, which has a curved surface in sliding contact with the outer periphery of the indoor side latch action piece 5. When the latch action piece 10 on the outdoor side rotates angularly clockwise or counterclockwise, the latch (not shown) built in the latch case 6 moves in and out, in the same way as when the latch action piece 5 rotates angularly. , the door 2 is configured so that it can be opened and closed even from outside the room.

An emergency unlock button 11 with one end protruding from the outdoor knob 7 is rotatably provided inside the outdoor roll bag 9 on the outdoor side.
The other side is coaxially connected to one end of a cylindrical locator 12.

A notch is formed near the indoor end of each of the knob retainer 7a, the outdoor roll bag 9, and the locator 12 located on the outdoor side. That is, as is clear from FIG. 3 and the like, second notches 13 cut in the axial direction are formed in the knob retainer 7a and the outdoor roll bag 9 integral therewith at opposing wall positions. On the other hand, first notches 14 are formed in the locator 12 at four locations in the circumferential direction and are cut in the axial direction so as to face each other.

A stopper 15 and a locking piece 16 are set at the indoor end of the locator 12 so as to overlap each other, and the stopper 15 and the locking piece 16 are capable of relative angular rotation. As shown in FIGS. 4 and 5, the stopper 15 has a pair of large protrusions 15a, 15a protruding from symmetrical positions on the disk-shaped outer periphery, which are connected to the first notch 14 of the locator 12 and the outdoor roll bag 9. the second of
It is loosely fitted into the notch 13 so that it can be rotated slightly angularly. In addition, a pair of small protrusions 15 protrude from other symmetrical positions on the outer circumference of the stopper 15.
b, 15b are loosely fitted to the first notch 14 of the locator 12 so as to be freely angularly rotatable;
It is not fitted into the first notch 13 of the outdoor roll bag 9.

Furthermore, a guide rod 15d is protruded from the center of the outdoor end of the stopper 15 as shown in FIG.
It is inserted into the guide hole 11a of No. 1 and guided so as to be freely movable in the axial direction. Further, a torsion compression spring 17 is compressed between the outdoor end of the locator 12 and the stopper 15, and as is clear from FIG.
2, and the indoor end is fixed to the stopper 15.
Fixed. The torsion compression spring 17 urges the stopper 15 toward the indoor side with respect to the locator 12. At the same time, the same stopper 15
The torsion compression spring 17 applies an acting force that tends to rotate the locator 12 clockwise in FIG. 3, while an acting force that tries to rotate the locator 12 counterclockwise in FIG. .

Further, the stopper 15 is connected to the two large protrusions 15a, 1
Locking protrusions 15c, 15c are formed at laterally symmetrical positions of 5a. These locking protrusions 15c, 15c
As shown in FIG. 6, the first notch 14 of the locator 12 is cut from the innermost part (outdoor side end) in the clockwise direction in FIG. 3 (one side in the circumferential direction in the registered claims). A stepped recess 18 for locking formed by
By pushing the stopper 15 toward the outdoor side, the torsion compression spring 1
7 simultaneously applies a rotational force in the clockwise direction in FIG. The locking protrusions 16a, 16a and the locking openings 30, 30 maintain the locked state of the outdoor knob.

The lock piece 16 provided on the indoor side of the stopper 15 is as shown in FIGS. 1 to 3, etc.
A pair of locking protrusions 16a, 16a are formed at symmetrical positions on the outer periphery. Each locking protrusion 16a, 16a
is in a locked state in which it is engaged with each second notch 13 of the knob retainer 7a and the outdoor roll bag 9 so that it can be guided movably in the axial direction (the locking projections 16a, 16a are in the second notch 13 of the knob retainer 7a and the outdoor roll bag 9). 13), and the locking piece 16 is not rotated within the regulating member 19.
When the locking protrusion 1 is moved to the indoor limit position regulated by (the state shown in Figure 1)
6a, 16a are disengaged from the second notches 13, 13, and the locked state is released. Moreover, when the locking piece 16 is at the outdoor limit position (the state shown in FIG. 2), each locking protrusion 16a, 16
a is the locking port 30 of the fixed side rose retainer 30
a, 30a (locking part) to establish a locked state. In this locked state, the locking protrusion 1
Since the locking openings 30a, 16a engage with both the locking openings 30a, 30a and the second notches 13, 13 of the knob retainer 7a, angular rotation of the outdoor knob 7 is prohibited.
It becomes impossible to open and close the door 2 from the outside.

Further, a locking push button 20 is fitted to the indoor end of the indoor roll bag 4 described above.
The push button 20 is always urged toward the outdoor side by a compression spring 21 compressed between the push button 20 and the indoor knob 1. A locking operation shaft 22 is protruded from the outdoor end of the push button 20, and the tip of the operation shaft 22 passes through the hole in the regulating member 19 and passes through the locking piece 16.
It is pressed against the end face of the room from the indoor side.

Further, the latch action piece 5 of the indoor roll bag 4 described above has its tip action portion 5a fitted into a recessed portion 14a formed by cutting deeply into the first notch portion 14 of the locator 12. . As is clear from FIG. 3, the tip acting portion 5a is engaged between the wall surface of the thick portion 12a of the locator 12 and the small protrusion 15b of the stopper 15, and the tip acting portion 5a is moved clockwise. The small protrusion 15b is located adjacent to the wall surface of the thick portion 12a in the counterclockwise direction (the other side in the circumferential direction in the registered claims). As mentioned above, since the torsion compression spring 17 biases the stopper 15 clockwise in FIG. 3 and biases the locator 12 counterclockwise in FIG. 3, the wall thickness of the small protrusion 15b is Part 12
a is in pressure contact with the tip 5a from both sides.

In the above configuration, the operating mechanism of this lock will be explained as follows.

(1) In the unlocked state shown in FIG. 1, the lock piece 16 is in the unlocked position, so both the indoor knob and the outdoor knob 7 can be operated.
However, when the indoor knob is rotated angularly, the tip acting portion 5a is engaged between the thick portion 12a of the locator 12 and the small protrusion 15b of the stopper 15, so the locator 12 or the stopper 15 is It will go around. However, the indoor knob 1, in other words, the tip acting portion 5a is the locator 1.
2 rotates clockwise in FIGS. 3 and 4, the thick part 12a and the large protrusion 1
Since there is a gap in the circumferential direction between the latch case 6 and the latch case 6, turn the indoor knob 1 clockwise and use the indoor latch action piece 5 to move the latch (not shown) in the latch case 6 out and out from the door 2. It is possible to perform a latch operation by holding the button. In the unlocked state shown in FIG. 1, the locking protrusions 16a, 16a of the locking piece 16 are out of the second notch 13, so the latch action piece 5 rotates clockwise in FIG. 3 together with the locator 12. However, even after the thick portion 12a comes into contact with the large protrusion 15a of the stopper 15,
Further clockwise rotation with the stopper 15, the outdoor roll bag 9 and the outdoor knob 7 is structurally possible if necessary to obtain the stroke for retracting and retracting the latch.

On the other hand, since there is a gap between the small protrusion 15b and the thick part 12b of the locator 12 due to the recessed notch 14a, the indoor knob 1 is angularly rotated counterclockwise while rotating the stopper 15. You can also perform a latch operation. In this case as well, the tip acting portion 5a and the stopper 15 rotate counterclockwise, and the small protrusion 15b
2b, it is structurally possible to rotate further counterclockwise together with the outdoor roll bag 9 and the outdoor knob 7, if necessary.

Further, when the outdoor side knob 7 is rotated, the outdoor side roll bag 9 rotates integrally with the locking piece 16, and the rotation is not restricted by the rose retainer 30. The latch can likewise be freely moved in and out of the door 2 by movement. In this case as well, the outdoor knob 7 can be freely operated in either the clockwise or counterclockwise direction.

(2) Next, when the lock push button 20 is pressed from the indoor side, the lock becomes locked as shown in FIG. That is, when the lock push button 20 is pressed,
The locking piece 16 is pushed by the tip of the operating shaft 22, and the stopper 15 is pushed toward the outdoor side together with this. As mentioned above, this stopper 15 is biased by the torsion compression spring 17 to rotate clockwise in FIG.
The large protrusions 15a, 15a of the locator 12
After moving toward the outdoor side while being guided in the axial direction by the notch 14, etc., the stopper 15 rotates slightly, and the locking projection 15c of the stopper 15, as shown in FIG.
15c is locked in the locking stepped recess 18 of the locator 12. In this state, the outdoor knob 7
Even if the lock piece 16 is rotated, the push button 2
The locking protrusions 16 of the locking piece 16 are kept moved toward the outdoor side by the compression spring 21 of 0.
a, 16a are fitted into the respective second notches 13, 13 of the knob retainer 7a and the roll bag 9, and at the same time are inserted into the locking port 3 of the rose retainer 30 on the fixed side.
0,30 to form a locked state,
The outdoor knob 7 does not rotate and is in a locked state.

(3) From the above locked state, turn the indoor knob 1 to the 3rd position.
When rotated clockwise in the figure, the tip acting portion 5a of the indoor latch acting piece pushes the wall surface of the thick portion 12a of the locator 12 in the circumferential direction, as shown in FIGS. 2 and 3. Therefore, locator 12
rotates clockwise in Figure 3. On the other hand, the large protrusion 15a of the stopper 15 engages with the wall surface of the second notch 13 of the roll bag 9 in the locked state in the clockwise direction in FIG. Therefore, the locking protrusions 15c, 15c of the stopper 15 and the locator 12
The locked state with the stepped locking recess 18 is released. As a result, the force of the torsion compression spring 17 on the outdoor side overcomes the force of the compression spring 21 on the indoor side, pushing both the stopper 15 and the locking piece 16 toward the indoor side, and the locking piece 16 is pushed into the locking opening of the rose retainer 30. Since it is removed from 30a, it is in the unlocked state (first
Figure).

On the other hand, when the indoor knob 1 is rotated in the counterclockwise direction in FIG.
The small protrusions 15b of No. 5 are pushed counterclockwise in the circumferential direction to rotate together. At this time, since the thick portions 12b and 12c of the locator 12 are in contact with the locking protrusions 16a and 16a in the locked state from the counterclockwise direction, the locator 12 does not rotate together with the tip acting portion 5a.
Therefore, the locking state between the stopper 15 and the locator 12 is released, and the torsion compression spring 1 is released in the same way as above.
The locking piece 1 is pushed by the biasing force toward the room
6 is released. Note that after the indoor knob 1 is rotated clockwise or counterclockwise in FIG. and the small protrusion 15b move back in the direction approaching the tip acting part 5a.

(4) If the lock is locked and there is an urgent need to unlock it from the outside, turn the emergency unlock button 11 counterclockwise (clockwise in Figure 3) when viewed from the outside. make it move. Along with this, the locator 12 connected to the emergency unlock button 11 rotates integrally, while the stopper 15 moves with the large protrusion 15a.
The locator 1 does not rotate together due to engagement with the wall surface of the first notch 13 and the tip acting portion 5a.
2 and the stopper 15 are released, and the lock is placed in the unlocked state in the same manner as above.

[Effect of idea]

As described above, the door lock of the present invention is provided rotatably within a predetermined angular range inside the outdoor roll bag, has a first notch near the indoor end, and further has the first notch. a locator having a stepped recess for locking formed by cutting into one side in the circumferential direction from a first notch in the outdoor end of the locator; a first notch of the locator; The roll bag engages with a second notch provided in the outdoor roll bag so as to be relatively rotatable, and can freely move forward and backward in the axial direction within these first and second notches, and can move forward and backward in the axial direction within the first and second notches. a stopper having a locking protrusion that can engage with the stepped locking recess when the stopper is displaced toward the end;
The stopper is superimposed on the stopper from the indoor side and engaged with the first and second notches, so that the stopper can freely advance and retreat in the axial direction within the first and second notches, and can freely rotate relative to each other within the first notch. and a locking piece that locks with a locking part provided on the fixed side member to prevent rotation of the outdoor knob when displaced to the outdoor end within the first and second notches, and the stopper is attached to the indoor side. At the same time, the stopper is urged toward one side in the circumferential direction, and when the stopper is displaced to the outdoor end within the first and first notches, the locking protrusion is locked in the locking stepped recess. A torsion compression spring is provided on the indoor knob, and the tip of its operating shaft abuts the locking piece from the indoor side, and by pushing the locking piece and the stopper toward the outdoor side, the locking piece and the stopper are connected to the first and second stops. A locking push button that is displaced toward the outdoor side within the notch, a compression spring that urges the locking push button toward the outdoor side with a weaker axial biasing force than the torsional compression spring, and the tip of the latch action piece of the indoor roll bag. The first notch is provided in the locator and is inserted into the first notch of the locator so that the side wall of the first notch is located on one side in the circumferential direction and the stopper is located on the other side in the circumferential direction. The locator is disposed between the side wall and the stopper, so that when the indoor knob is rotated to one side in the circumferential direction, the locator is rotated to one side in the circumferential direction and locked with the locking protrusion. While releasing the locking state with the stepped recess, when the indoor knob is rotated to the other side in the circumferential direction, the stopper is rotated in the other side in the circumferential direction as well, and the stopper is locked with the locking protrusion. A tip acting part that releases the locked state with the stepped recess for locking, and a tip acting part that projects from the outdoor end of the locator and locks the locator by rotating the locator from the outside to one side in the circumferential direction. The structure includes an emergency unlock button that releases the locked state between the protrusion and the stepped locking recess.

As a result, even if the indoor knob is rotated in either direction in the circumferential direction or in the direction of the lock with respect to the locked lock, the locked state can be released, and in case of an emergency, the lock can be released from the outdoor side. For door locks that meet these conditions, the lock/unlock mechanism is built into the exterior body of the lock, such as the knob or throne, reducing the number of man-hours required to assemble the lock. Since the number of component parts is small, the causes of failure are greatly reduced, and manufacturing costs are reduced.

[Brief explanation of drawings]

1 to 6 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of the door lock in an unlocked state. FIG. 2 is a longitudinal sectional view of the door lock in the locked state. FIG. 3 is a vertical cross-sectional view of the door viewed from the locking piece toward the outside of the room in the locked state shown in FIG. 2. FIG. FIG. 4 is a longitudinal cross-sectional view looking from the stopper toward the outside of the room.
FIG. 5 is a front view of the stopper. FIG. 6 is an explanatory view of the main parts showing the locked state of the locator and the stopper. 1 is an indoor knob, 1a is a knob retainer, 4 is an indoor rollback, 5 is a latch action piece, 5a is a tip action part, 6 is a latch case, 7 is an outdoor knob,
7a is a knob retainer, 9 is an outdoor rollback,
10 is a latch action piece, 11 is an emergency unlock button, 12 is a locator, 13 is a second notch, 14 is a first notch, 14a is a recessed part, 15 is a stopper, 15a is a large protrusion, and 15b is a small Projection 15c is a locking projection 1
6 is a locking piece, 16a is a locking protrusion, 17 is a torsion compression spring, 18 is a stepped recess for locking, 20 is a locking push button, 21 is a compression spring, 22 is an operating shaft, 30 is a rose retainer, 30a is a It is a locked door.

Claims (1)

[Scope of Claim for Utility Model Registration] Insert the latch action pieces of the indoor and outdoor roll bags, which are integrally provided on the indoor knob and the outdoor knob, respectively, into a latch case, and by rotating each latch action piece. A door lock having a latch that can be freely retracted and retracted, the door lock being rotatably provided within a predetermined angular range inside the outdoor roll bag, and having a first notch near the indoor end thereof; a locator having a stepped recess for locking formed by cutting into one side in the circumferential direction from a first notch in the outdoor end of the locator; and the second one installed on the outdoor roll bag.
The locking member engages with the notch in a relatively rotatable manner so as to be able to move forward and backward in the axial direction within the first and second notches, and also for the locking when the first and second notches are displaced toward the outdoor end. a stopper having a locking protrusion that can be engaged with the stepped recess; and a stopper that overlaps the stopper from the indoor side and is engaged with the first and second notches to move back and forth in the axial direction within the first and second notches. The outdoor knob is made to be able to move freely and relative to each other within the first notch, and when it is displaced to the outdoor end within the first and second notches, it is locked by a locking part provided on the fixed side member. a locking piece that prohibits rotation of the stopper; and a locking piece that urges the stopper toward the indoor side and simultaneously urges the stopper toward one side in the circumferential direction so that the stopper is attached to the outdoor end within the first and first notches. A torsion compression spring that locks the locking protrusion in the locking stepped recess when displaced; and a torsion compression spring that is provided on the indoor knob and whose operating shaft tip abuts the locking piece from the indoor side and is pushed toward the outdoor side. a locking push button that moves the locking piece and the stopper toward the outdoor side within the first and second notches when the locking button is operated; a compression spring that biases the locator; By disposing the stopper between the first cutout side wall and the stopper so that the stopper is located on the other side in the circumferential direction, when the indoor knob is rotated to one side in the circumferential direction, the locator is positioned on the other side in the circumferential direction. When the indoor knob is rotated to the other side in the circumferential direction, the stopper is released. a tip acting part that rotates in the other side in the circumferential direction to release the locked state between the locking protrusion and the stepped locking recess; A door lock characterized in that it has an emergency release button that releases the locked state between the locking protrusion and the stepped locking recess by rotating the locking button to one side in the circumferential direction.