JPS5931373A - Door lock - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a lock lever that can be retracted into a lock case by operating inner and outer handles such as levers, which allows the temporary locking state to be changed to 1! ?
Regarding the Z>h lock, it also relates to a door lock in which the locked state is obtained by preventing the rotation of the outer handle 1 in the temporarily tightened state J5.

Apply an elastic force (=J) in the protruding direction of the lock case to make it retractable.Then, temporarily tighten the lock rod with the lock rod, and then move the lock rod into the lock case by operating the inner and outer handles. In addition to the door lock that is recessed into the door to open the door, and the temporary locking mechanism shown in (a) above, the outer handle is prevented from rotating by operation from the inside.
All of the m-keys used to obtain a locked state are well known.

By the way, in the former door lock, that is, a door lock that has a temporary locking mechanism that retracts the lock rod and opens the door by operating the inner and outer handles, the protruding state of the lock rod when the handle operation is released is as follows.
Door locks are limited to those that protrude up to a certain length determined initially, and there are no door locks that can change the protrusion length depending on the operating state.

Therefore, the object of the first invention is to enable the protrusion length of the lock rod upon release of the handle operation to be selected in multiple stages, to expand the range of use for this type of door lock, and to expand the range of ji5 HJ. The object of the present invention is to provide a door lock in which the selection operation of the protrusion length can be achieved by operating only the handle necessary for opening the door, without relying on the operation of other parts other than the handle.

In addition to the latter door lock, that is, in addition to the temporary locking mechanism like the one in front), the door lock that obtains the locked state by blocking the operation of the outer handle by operation from the inside has a separate locking mechanism other than the inner handle. By operating this member, the rotation of only the outer handle is prevented, or both the inner and outer handles are locked, preventing the outer handle from rotating. It was limited.

Therefore, the object of the second invention is to provide a door lock in which the locking operation itself from the inside can be accomplished only by operating the inside handle.

Furthermore, a third invention aims to achieve both the objects of the first invention and the second invention in the same door lock.

In order to achieve the above object, the door lock of the present invention locks a cam group that interlocks with the operation of the inner handle or the outer handle, moves and slides at a predetermined angle for each operation, and rotates in the force direction. The protrusion and return positions of the lock lever are controlled by a driven member that interlocks with the cam surface provided in the case, and a similar separate Another driven member interlocked with the cam surface of the outer handle can prevent the operation of the interlocking member which retracts the lock lever by operating the outer handle, thereby obtaining the locked state.

Hereinafter, further details will be explained according to the embodiments shown in the accompanying drawings.

FIG. 1 is a plan view showing an embodiment of the door lock according to the present invention, which shows a lock body A having a lock rod 1, an inner handle C rotatably held on an inner seat plate B, and an outer handle C rotatably held on an inner seat plate B. It consists of an outer handle F rotatably held on the seat plate.

The structure of the lock body will be explained in more detail with reference to FIG. 2 and subsequent figures. As shown in the figure, the lock lever 1 is slidably provided within the lock case 2, and a spring 3 applies an elastic force in the direction of constant protrusion from the frontage of the front 2a. 2b is a guide hole formed in the lock case 2;
A guide pin 1a attached to the lock rod 1 is fitted into this guide hole and a similar guide hole formed in the coos lid to serve as a guide during sliding. Reference numeral 4 denotes an inner hub that transmits the rotational operation of the inner handle C to the lock rod 1, and a hub shaft 5 that has a square hole 5a into which the square core of the inner handle C can be fitted in a non-circular through hole 4a.
The protrusion 4b provided at one end is fitted into the notch 1b formed in the lock rod 1, and is held in a non-rotating state on the outer periphery of the lock rod 1.

The rotation operation of the outer handle L: is also performed using the non-circular through hole 6a.
J3 is fitted and held in a non-rotating state on the outer periphery of the hub shaft 7 having a square hole 7a into which the square core of the outer handle F can be fitted, and a protrusion 6b provided at the bottom part is formed on the lock rod 1. This is transmitted by the outer hub 6 fitted into the cutout 1b (see Fig. 5). 8 is a cam m that is moved intermittently by a predetermined angle every time the inner and outer handles are rotated, and a first 7J formed by a protruding piece 9a and a trough thereof is provided on the circumferential side of the cam m. The cam surface 9 has a second cam cylinder 10 in which two types of protrusions 10a and 1'Ob with different protrusion degrees are alternately formed. The above-mentioned intermittent feeding mechanism of the cam disk is an application of a well-known pawl device. That is, as shown in FIG. 6, the cam disk 8 has a central hole 11 having a stepped portion 11a with which the feed pawl can engage.
A ratchet wheel 12 having the hub shaft 5 is fitted into the central hole 11, and a feed pawl 12a made of a spring material is attached to the ratchet wheel 12.
A can be engaged with rotation in one direction. Note that 13 is a presser claw that can engage with the convex portions 10a and 10b of the second cam surface 10, and is made of the same (spring material).Therefore, when the inner handle C is rotated, the - The cam disk 8 is in a state in which it is intermittently fed clockwise in the drawing with each operation.If the ratchet wheel 12 can be rotated clockwise by rotating the outer handle F, then the The gnome board 8 can be rotated clockwise with each operation.

Reference numeral 14 denotes a control member for controlling the protrusion length of the lock rod 1, which is made of a spring material, and is driven by the first cam surface 9 of the cam disk 8 to change its position.

However, the position where the protruding piece 9a of the cam cylinder 9 contacts the control member 14 and pushes it up against the spring force, and the position where the protruding piece 9a of the cam cylinder 9 is located in the valley between the protruding pieces 9a and serves as the old state due to the spring force. It performs position conversion between the two. Reference numeral 15 denotes an engagement step provided on the lock lever in relation to this control member, and as shown in FIG. A control member 14 is provided for engagement. Note that the cam disk 8 is the fifth
As shown in the figure, a cam cylinder 16 is integrally provided with a hub shaft 7 having a square hole 7a into which the colored core of the outer handle F can be fitted.
It is fitted and held in a recess 17 formed on the back surface of the outer periphery. Therefore, in this embodiment, the inner and outer parts are separated, and even when the outer handle F is rotated, the cam disc is not rotated. As is well known, the inner and outer handles are rotatably held at their respective seats with resilient force for return, and when the handle operation is released, they return to their original state.

In the above configuration, the main parts of the embodiment of the first invention are the cam W8, the first cam surface 9, the control member 14, and the engagement stepped portion 15 formed on the lock rod 1.

That is, the state shown in FIG. 2 shows a state fm in which the lock rod 1 is most protruded from the front 2a, but in this state, if the inner handle C or an interlocking relationship is provided,
If either of the outer handles F is rotated incorrectly, rotate the inner hub 4 or the outer hub 6 to move the lock rod 1 to the front 1 to 28.
At the same time, the ratchet wheel 12 is rotated clockwise in the drawing, and the 7J disc 9 is rotated clockwise by a predetermined angle due to the engagement between the feed pawl 12a and the stepped portion 11a. be done. This angle is formed at such an angle that the projecting piece 9a of the first cam cylinder 9 comes into contact with the control member 14 and pushes up the control member against the spring horn, so that when the handle is released, the spring 3's elastic nozzle j This restricting member 911 engages with the engaging stepped portion 15 of the lock rod 1 which protrudes and returns to its original position, thereby regulating its protruding length. (See Figure 3).
When the clap is rotated again from this state, the lock rod 1 is re-inserted into the lock case, the cam disk 8 is further rotated clockwise by a predetermined angle, and the protrusion 9a of the first cam tube 9 is rotated. The engagement state between the control member 14 and the control member 14 is released, and the control member 14 is returned to its old state by a self-returning force. 15, the lock rod 1 returns to the most protruding state shown in FIG. Therefore, the lock rod 1 has a unique structure in which its protrusion length is changed every time the handle is operated to open the door. ing.

In the above example, the protrusion length of the lock rod 1 is set to two types, but the cam surface 9a is configured in multiple stages, and the control member 14 that follows this is also changed in position in multiple stages. By forming the engagement step portion 15 in multiple stages, it is possible to create a door lock in which three or more stages of protrusion length can be selected.

Further, the cam disk 8 has J grooves on the second cam surface 10,
This is also a main part of the embodiment of the second invention.

As described above, the second cam surface 10 has two types of protrusions 10a, 10. The lζ stopper 19 is pressed against this cam surface by the spring 18, and is moved to the first position and the second position, that is, the forward position, by alternately contacting the convex portions 10a and 10b. The convex portions 10a and 10bl are provided at 11 pin positions so that they can alternately come into contact with the stopper 19 for each operation of the inner handle C. Therefore, each time the inner handle C is rotated, the
19 is designed to repeatedly move forward and backward. By the way, the outer hub 6 that interlocks with the outer handle is formed with a donkey 6C that engages or does not engage with the stopper 19 in its forward and backward positions. FIG. 2 shows a convex portion 10a with a large protrusion on the cam surface 10.
shows a state in which the stopper 19 is pushed back against the spring force, and in this state, the outer handle F is rotatable and in an unlocked state. However, when the inner handle C is rotated, the convex portion 10b with a small protrusion comes into contact with the stopper 19, so the stopper 19 moves forward due to the spring force and is positioned on the rotation trajectory of the rotation hub 6. Since it becomes possible to engage, the outer handle F becomes unable to rotate.
What happens to the locked state, and each time the inner handle C is operated,
Locking and unlocking are repeated alternately.

Note that the outer hub 6 can be engaged with the stopper 19, thereby obtaining a locked state.
It is also possible to engage an interlocking member other than the outer hub 6 to prevent the outer handle F from rotating. In any case, it has a unique structure in which the door can be opened by operating the inner handle C, but it can also be locked.

The third invention is a combination of the first invention and the second invention, and as is already clear, the illustrated structure represents an embodiment of the third invention. That is,
The third invention includes a control member 14 and a control member 14 which are respectively driven by a first cam surface 9 and a second cam surface 10 of a cam disk 8, which are moved intermittently by a predetermined angle every time the inner handle C is rotated. The stopper 19 regulates the protrusion length of the lock rod 1 and at the same time
In this embodiment, when the lock rod 1 is in the intermediate protruding state, it is in the h-colored lock state. However, this relationship between the two can be easily changed by changing the relative relationship between the first cam surface and the second cam surface. As shown in Figure 11 of J3,
In order not to impede the rotation of the protruding piece 9a of the first cam surface 9,
A groove 19a is formed in the stopper 19.

As is clear from the above description based on the embodiments, the door lock according to the present invention is designed to be retractable from the lock case. The protruding length of the lock rod can be varied by operating the inner and outer handles, and it can also be used as the operating end of other members, expanding the range of applications of this type of door lock.

Furthermore, according to the second invention, in addition to the above-mentioned temporary tightening mechanism, when the outside handle is made inoperable by an operation from the inside to obtain a locked state, a separate locking member is used. On the other hand, it has been possible to provide a door lock that is extremely easy to operate and can be locked by operating only the inner handle.

Furthermore, according to the third invention, not only the door can be opened and closed, but also the protrusion length of the lock lever can be varied by only operating the handle.
Locking and unlocking operations can be performed at the same time, and a door lock with a wide range of applications that can accomplish multiple operations with a single operating member has been provided.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the door lock according to the present invention. Fig. 2 shows the internal structure of the lock body, and is a side view of the lock case with the case lid removed. It shows the condition. Fig. 3 is a side view showing the locked state, Fig. 4 is an explanatory diagram showing the relationship between the outer hub and the stop collar in the locked state, Fig. 5 is a longitudinal sectional view of the lock body, and Fig. 6 is a plan view of the cam disk, FIG. 7 is an X-xm sectional view thereof, FIG. 8 is a plan view of the ratchet wheel, FIG. 9 is a side view thereof, FIG. 10 is a rear view of the inner hub, FIG. 11 is a side view of the stopper. 1...Lock rod 2...Lock case 8...Cam disc 9.
...First cam surface 10...Second cam surface 14...
Control member 19... Stopper A... Lock body C.
...Inner handle F...Outer handle Agent Patent attorney Taiho Oshima Figure 1 Figure 4-35 Figure 8 Figure 9 Figure 10

Claims (3)

[Claims] (1) In a door lock in which a temporary locking state is obtained by a lock rod that is provided so as to be retractable by applying an elastic force in the direction of protruding from the lock case, and the lock rod can be retracted by operating the inner and outer handles, A cam disk that rotates in one direction and is moved intermittently by a predetermined angle every time the outer handle is operated, and a control member that changes position in conjunction with the cam surface of the cam disk are provided inside the lock case, and the handle is operated. +'1' for release, when the locking rod returns to protrusion,
A door lock in which a lock lever can be locked at a desired protruding position by the control member that changes its position in conjunction with a cam surface. (2) The lock lever is provided so that it can be retracted and retracted by applying a resilient force in the direction of protrusion from the lock case at all times, and is retractable by operating the inner and outer handles to obtain a temporarily tightened state and prevent the outer handle from rotating. In a door lock that obtains a locked state by locking, a cam disc is provided inside the lock case, and the cam disc is moved intermittently by a predetermined angle each time the inner handle is operated, and rotates in one direction. The stopper, which has been brought into contact with an elastic force, is alternately positioned in the first position and the second position in conjunction with the cam surface each time the stopper is moved intermittently, and in either position, the stopper is moved outward A door lock that obtains a locked state by preventing the operation of an interlocking member that retracts a lock lever in conjunction with the operation of a handle. (3) It is provided so that it can be retracted by applying elastic force in the direction of protrusion from the lock case at all times, and it is immersed when the inner and outer handles are operated.
While temporarily tightening the lock lever by 1q,
In a door lock that obtains a locked state by preventing rotation of the outer handle, a cam disc is installed in the lock case that rotates in one direction and is moved intermittently by a predetermined angle every time the inner handle is operated. The cam disk is provided with a first cam surface and a second cam surface, and a stopper driven by the first cam surface is alternately moved to the first position and the second position each time the cam disk is intermittently fed. position, and in either position, prevents the operation of the interlocking member that retracts the lock lever in conjunction with the operation of the outer handle,
A door lock in which the lock lever can be locked in a desired protruding position when the lock lever returns to protrusion due to release of handle operation, by means of a control member that obtains a locked state and changes its position by following a second cam surface. .