JPH0424514B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a temporary tightening state using a latch bolt that is slidably provided in a latch case by constantly applying an elastic force in the protruding direction, and also provides a latch bolt that is slidably provided in a latch case. When operated, the locking member of the outer handle provided in the outer washer is rotated via the interlocking mechanism, and the outer handle becomes inoperable and the locked state is obtained. This relates to a door lock that has a dead bolt that can be retracted from the front in conjunction with the operation, and its purpose is to make it impossible to unlock from the outside, or to unlock only by using a key. You can choose from two types: the normal locking/unlocking specification, and the special locking/unlocking specification that can be locked from the indoor side and unlocked from the outdoor side with a coin, etc., and changing the specifications is relatively easy. Our goal is to provide door locks that can be used in many different ways.

First, obtain a temporarily tightened state with the latch bolt,
An example of a structure of a door lock in which the outside handle is locked by a locking member that is linked to the operation of the indoor operation member to disable the operation and thereby obtain a locked state will be described.

FIG. 1 is a front view showing one embodiment of such a door lock, in which the door 1 is held between the inner washer 2 and the outer washer 3.
are attached to each other.

To explain further with reference to FIGS. 2 and below, an inner handle 4 and an outer handle 5 are pivotably supported on the inner and outer washers 2 and 3, respectively. In FIGS. 3 and 4, reference numerals 6 and 7 indicate support shafts provided above and below the inner ends of the inner and outer handles 4 and 5,
Reference numeral 8 designates bearings provided on the inner and outer washers 2 and 3 sides. The inner handle 4 and the outer handle 5 are each provided with protruding rods 9 and 10 that protrude inwardly, and their inner ends are introduced into the latch case 11 through a through hole 12 formed in the latch case 11 (see Fig. 5). and Fig. 6), the latch bolt 1 is provided in the latch case 11 with a constant elastic force applied in the projecting direction.
3 is engaged with the rear end portion 13a. Therefore, by operating the inner and outer handles 4 and 5 in the directions of the arrows in FIG. 2, the latch bolt 13 can be retracted via the lobes 9 and 10. In FIGS. 2 to 4, reference numeral 14 denotes an inside hub that is rotatably provided within the inner washer 2, and 15 is an outside hub that is rotatably provided within the outer washer 3, both of which hold the latch case 11. They are connected to each other by a locking bar 16 passed through them. Reference numeral 17 denotes a locking operation member provided on the inner washer 2, which is shown as a push button in this example, and has a guide hole 17a guided by the small diameter portion 14a of the inside hub 14. It has a protrusion 17b that fits into a small hole 14c formed in the tip-shaped portion 14b. Therefore, by pressing the operating member 17, the inside hub 14 can be rotated, and the outside hub 15 can also be rotated through the rotation of the locking bar 16. Further, as will be described later, when the locking bar 16 is rotated in the opposite direction and the inside hub 14 is also rotated in the opposite direction accordingly, the operating member 17 also protrudes and returns in an interlocking relationship. In FIG. 3, reference numeral 18 denotes a member for holding the inside hub 14 in two rotational positions, and receives the spring force of a compression coil spring 19. As shown in FIGS. 4 and 8, a hook 20 is protruded from the inner end of the outer handle 5.
Locking arm 15a provided on the outside hub 15
can be engaged. 15b is a key engagement hole formed on the outer surface of the outside hub 15.
5 and 6, reference numeral 21 denotes a driven hub rotatably provided within the latch case 11;
The locking bar 16 passes through the central square hole 21a of the driven hub 21. The state shown by the one-dot chain line is the state of the driven hub 21 when the locking operation member 17 is pressed to lock the outer handle 5, and the edge of the protruding piece 21b is in the protruding state. The latch bolt 13 is engaged with the edge of the intermediate step portion 13b. Therefore, when the inner handle 4 is operated to move the latch bolt 13 backward, the driven hub 21 is pressed by the latch bolt 13 and can return to its old state, the locking bar 16 also rotates, and accordingly, The inside hub 14 also rotates to cause the operating member 17 to protrude and return, and the outside hub 15 also rotates to disengage the locking arm 15a from the locking portion 20. In FIGS. 3, 4, and 8, 22, 23 indicate the inner and outer handles 4,
5 are the spring holders each formed, and the back plate 2 of each washer
The spring 2
8 and 29 are mounted to apply a return force to each handle.

FIG. 9 and FIG. 10 show the locking operation member 17.
This shows another example of the interlocking relationship between the rack and the inside hub 14, in which a rack part 17c is formed on the operating member 17 side, and a pinion part 14d that meshes with the rack part 17c is formed in the small diameter part 14a of the inside hub 14. It is. In FIGS. 1 to 4, the other reference numerals 30 are internal threads protruding from the inner washer 2 side, and 31
32 is a stud for inserting a mounting screw protruding from the outer washer 3 side, and 32 is a steady rest for the latch case 11 that is protruding from the back plate 25 of the outer washer 3.

With the door lock having the above structure, the door can be opened by retracting the latch bolt by operating the inner and outer handles, and by pressing the locking operation member 17 from the inside, the inside hub 14 and locking bar 16 can be opened. The outside hub 15 is rotated through the rotation of the outside hub 15, and the engagement of the locking arm 15a with the hook 20 provided on the outside handle 5 disables the operation of the outside handle 5, and the locked state is maintained. That's what you get.

In this locked state, when the inner handle 4 is operated, the locking bar 16 is rotated by the driven hub 21 which rotates in conjunction with the retraction of the latch bolt 13, and the inner hub 14 is rotated to perform the locking operation. While returning the member 17 to the protruding state,
The outside hub 15 is also rotated at the same time, and the engagement between the locking arm 15a and the latching portion 20 is also released.

Note that even if the door is closed by accidentally pressing the locking operation member 17 in the open state, the latch bolt 13 will move back due to the door closing operation, and the locking operation member 17 and the locking arm 15a will be closed in the same manner as described above. Since the handle is restored to its old state, there is no risk that the outer handle will become locked due to erroneous operation.

The door lock described above is temporarily locked by a latch bolt, and the outer handle is connected to a locking member (in the above case, consisting of the outside hub 15 and the locking arm 15a) that is linked to the operation of the indoor operation member. )
This shows an example of a door lock structure that locks with the door lock and makes it impossible to operate, and as long as the features of the invention described below can be realized, the door lock will perform the same function.
Of course, other door locks can also be used.

By the way, the present invention provides a door lock having such a function, a normal locking/unlocking specification that can be unlocked from the outside using only a key operation, and a special specification that can be unlocked with a coin or the like. This is an attempt to provide a door lock that allows the selection of two modes. This point will be explained below.

FIG. 11 shows an embodiment in which the present invention is applied to the door lock, and is a view corresponding to the main part in FIG. 2. In this example, a rotor 34 having a through hole 33 is provided on the front surface of an outside hub 15 as a locking member and is rotatable independently. An engaging hole 15b that can communicate is provided.
The through hole 33 is a slit 33 into which a coin or the like can be inserted.
a and a non-linear keyhole 33b. In this structure, the lock can only be unlocked by inserting a key having a cross-sectional shape that matches the keyhole 33b of the rotor 34, fitting the tip of the key into the engagement hole 15a of the outside hub 15, and turning the key. It is possible.
For example, even if a coin or the like is inserted into the slit 33a and the rotor 34 is rotated, the rotor 34 simply rotates, and the outside hub 15 does not rotate. Furthermore, even if an attempt is made to insert the tip of a screwdriver, the presence of the keyhole 33b prevents this.

What is shown in FIG. 14 is the connector 35 for changing the locking/unlocking specification, and the through hole 33 of the rotor 34.
The distal end portion can be inserted into the engagement hole 15a of the outside hub 15 by passing it through. Of course, through hole 3
It has a foot portion 35a that fits into the keyhole 33b of No. 3, and in this foot portion 35a, as shown in FIG.
It connects the outside hub 15 and the rotor 34. If such a connector 35 is used, the lock can be unlocked from the outside using only a coin or the like.

As is clear from the explanation based on the above embodiments, the door lock according to the present invention allows the dead bolt to be moved in and out using a locking bar connected at one end to the indoor operating member, or by a locking bar led out to an outer washer. In a door lock that disables operation of the outdoor handle by a locking member connected to the outer end of the locking bar, the outer washer includes a rotor that can rotate independently of the locking member connected to the outer end of the locking bar. The rotor and the locking member can be connected to each other by inserting a connector into the rotor from the outside, and the through hole provided in the rotor can be configured as a simple slit. , slit and keyhole,
By appropriately selecting the engagement parts of the slit, keyhole, and locking bar, it is possible to select one of two modes: one in which the lock cannot be unlocked from the outside when uncoupled, and the other in which the lock can only be unlocked from the outside with a key. However, when connected, it can be used as a door lock that can be unlocked with a coin, etc., and the conversion method is extremely simple, making it ideal for indoor locks such as bathrooms. He was able to provide the lock.

[Brief explanation of drawings]

Fig. 1 is a front view showing an example of a door lock to which the present invention can be applied, Fig. 2 is a sectional view taken along the line - - in Fig. 1, and Fig. 3 is a rear view of the inner washer side, showing the back plate. Remove and show. FIG. 4 is a rear view of the outer washer side, with the back plate removed. FIG. 5 is a plan view of the latch lock, partially shown in cross section. FIG. 6 is a sectional view taken along the line of FIG. 5, FIG. 7 is a front view of the inner washer side,
FIG. 8 is a perspective view of the outer handle, FIG. 9 is an explanatory diagram showing another example of the interlocking relationship between the locking operation member and the inside hub, FIG. 10 is a sectional view of the same, and FIG. Main part longitudinal sectional view showing an embodiment of the invention, 1st
Figure 2 shows the outside hub, A is a plan view,
B is a sectional view, FIG. 13 is a rotor, A is a plan view, B is a sectional view, FIGS. 14A and B are front and side views of the connector, and FIG. 15 is a diagram of the connector. FIG. 3 is a cross-sectional view of main parts showing a state where the rotor and the outside hub are attached. 2... Inner washer, 3... Outer washer, 5... Outer handle, {14... Inside hub, 17... Locking operating member, 40... Thumb turn} Indoor operating member, 16... Locking bar, { 15...Outside hub, 15a...Lock arm} Locking member of outer handle, 34...Rotor, {33a...Slit, 33b...Keyhole, 33c...Engaging portion}...
33...Through hole, 37...Operation rod.

Claims (1)

[Claims] 1. The outer end of the locking bar for locking/unlocking, whose one end is connected to the indoor operating member, is led out to the outer washer, and the outer washer has an independent locking member that is separate from the locking member of the outer handle connected to the outer end of the locking bar. Providing a rotor that is rotatable and has a through hole that communicates with the outside,
A door lock in which a locking member of an outer handle and a rotor can be connected to each other by a connector inserted from the outside through a through hole in the rotor.