JPS6028754Y2 - door lock - Google Patents

Description

[Detailed description of the invention] The present invention provides bundles on both the inside and outside surfaces of an indoor door that can be opened and closed freely, and engagement protrusions that can be freely projected and retracted on the end faces. The present invention relates to an improvement in a door lock in which a rectangular core shaft that rotates is installed so that the engaging protrusion can be moved in and out through the rectangular core shaft when either the inner or outer bundle is rotated.

Since the door lock described above does not have a locking mechanism using a key, for example, when used on a bathroom or toilet door, it is necessary to add a locking mechanism from the inside.

By the way, when incorporating such a locking mechanism,
Of course, it should be possible to lock and unlock the door easily from the inside, but it should also be possible to unlock it from the outside in case of an emergency, such as when an elderly person collapses in the bathroom or toilet. It is desirable to do so.

Moreover, this unlocking operation from the outside is only for emergency use, and unless the structure is designed to be difficult to operate during normal times, the meaning of locking will be lost.

The present invention provides a door lock with a simple structure that satisfies such requirements.

Hereinafter, embodiments of the present invention will be described based on the drawings.

1 and 2 show a door lock according to the present invention, 1 is an indoor door that can be opened and closed by swinging, 2a and 2b are lever bundles provided on both the inside and outside of the indoor door 1, and 3 is an end face of the indoor door 1. This is an engaging protrusion that is provided in the holder and is retractable and is urged to protrude by a spring (not shown).

Both lever bundles 2 are located between the lever bundles 2a and 2b.
A square core shaft 4 that rotates integrally with the lever bundles a and 2b is installed, and is constructed so that the retaining protrusion 3 moves in and out through the square core shaft 4 when either the inner or outer lever bundle 2a or 2b is rotated. It's intimidating.

Reference numeral 5 denotes a lock body, which incorporates the spring and a mechanism for converting the rotational movement of the square core shaft 4 into linear movement of the locking protrusion.

6 has an inner diameter made of hard synthetic resin that rotatably supports the inner lever bundle 2a.
is fixed to the inner surface of the

7 is a metal outer bowl on the opposite bank that covers the inner diameter 6, and 8 is an inner diameter separating plate.

Reference numeral 9 denotes an external pressure member made of hard synthetic resin that rotatably supports the outer lever bundle 2b, and is fixed to the outer surface of the indoor group 1.

Note that the inner diameter 6 and the outer pressure 9 are integrated with each other by the above-mentioned external screws or the like.

10 is a metal external bowl that covers the external pressure 9.

The inner end of the inner lever bundle 2a has an inner cylindrical shape with an inner diameter that can be fitted over the inner end, and as shown in FIG.
A locking piece 1 made of metal has an engaging portion 11 formed by cutting out a part in the circumferential direction on the outer edge, and a pair of tongue pieces 12, 12 on the inner edge, which abut on the outer surface of the square core shaft 4.
3 is provided so as to rotate together with the square core shaft 4 due to the contact between the tongue pieces 12, 12 and the outer surface of the square core shaft 4.

A through hole is formed in the inner diameter 6 at a position below the inner lever bundle 2a, and a seesaw switch type thumb piece 14 that can be freely engaged with and detached from the notch 11 is fitted into the through hole, and a square core It is swingably supported around a pin 15 perpendicular to the shaft 4.

The inner diameter 6 is provided with a click device A for positioning the thumb piece 14.

That is, the thumb piece 14 has two recesses 16a and 16b at circumferential positions around the pin 15, and the inner diameter 6 has a ball 1 that partially fits into the recesses 16a and 16b.
7 and a compression spring 18 that biases the pawl 17 in the fitting direction, and the thumb piece 14 can be moved between a position where it is engaged with the retaining portion 11, that is, a locked state, and a position where this engagement is disengaged, that is, an unlocked state. It is arranged to position itself in the same state.

Further, one end portion of a shaft body 20 is pivotally connected to the thumb piece 15 by a pin 19 at a position displaced from the pin 15 toward the notch 11 side, and the shaft body 20 is pivoted in conjunction with the swinging movement of the thumb piece 14. It is designed to move in the direction of the core.

A small hole 21 for confirming and pressing the other end of the shaft body 20 is formed in the external pressure 9, and a small hole 22 that matches the small hole 21 is formed in the external outer bowl 10, and of course, Holes (not shown) are also formed in the indoor group.

When the shaft body 20 is swung to the position where the thumb piece 14 is disengaged from the engagement portion 11, the free end of the shaft body 20 is located deep within the small hole 21, and the thumb piece 14 is positioned deep within the small hole 21. The length of the shaft body 20 is set so that the free end of the shaft body 20 is located near the outer end of the small hole 21 and does not protrude from the outer bowl 10 when the shaft body 20 is engaged with the outer bowl 10. The free end of 20 is formed into a display part a that displays whether it is in a locked or unlocked state, and in case of an emergency,
It is designed so that it can be unlocked from the outside by pushing in the display section a with a suitable thin rod-shaped member that is nearby, such as a nail, chopsticks, toothpick, or the tip of a pencil or a pen.

That is, as shown in FIG. 4A, by pressing one end of the thumb piece 14 from inside the indoor group 1 with a fingertip, the thumb piece 14 engages the engaging portion 11 of the locking piece 13.
engage with.

As a result, the rotation of the locking piece 13 is blocked by the thumb piece 14, so the bundle levers 2a and 2b cannot be rotated, resulting in a locked state.

In this locked state, the free end of the shaft body 20 (
Since the display part a) is located near the outer surface of the outer bowl 10,
You can visually tell that the door is locked from the outside.

However, since the free end of the shaft body 20 does not protrude significantly from the outer bowl 10 and the diameter of the small holes 21 and 22 is small, it is possible to push it in with a fingertip. If not used, the free end of the shaft 20 cannot be pushed in, and the purpose of locking can be achieved.

In an emergency, as shown in FIG. Since the lock is moved to the position where it comes off, the lock can be unlocked from the outside.

In other words, the external pressure 9, the small holes 21, 22 of the external outer bowl 10, and the holes provided in the indoor group 1 are used as unlocking operation openings, and the shaft body 20 and a separate rod-shaped member located therein are used to lock the openings. The thumb piece 14 can be switched to the unlocked state from outside the door.

FIG. 5 shows a first alternative embodiment, in which a bottomed cylindrical body 23 having a hole C at the bottom is provided in the external pressure 9 and the small holes 21 and 22 of the external outer bowl, and the shaft body 20 is connected to the thumb piece 14. is made into a separate body, the shaft body 20 is inserted into the hole C, one end thereof is brought into contact with the thumb piece 14, and the guide cylinder 24 that allows the shaft body 20 to swing in the axial direction is inserted into the bottomed guide cylinder 24. It is screwed onto the cylinder body 23, and a spring 26 is interposed between the seat 25 attached to the shaft body 20 and the guide cylinder 24, and the function and effect are the same as that of the example structure. The only difference in structure is that the thumb piece 14 and the shaft body 20 are in a state of being separated.

In FIG. 5, the same components as in FIG. 2 are given the same reference numerals, and their explanations are omitted.

In the above embodiment, the locking piece 13, which is a separate member from the bundle 2a and the square core shaft 4, is provided with the engaging portion 11; A joining part 11 may be formed.

In addition, although a lever/handle operated door lock is shown as an example, a knob/handle operated door lock may also be used.

Further, the engaging part 11 can be modified in various ways, such as being formed by a notch as described above, or by a protrusion that engages in a recess provided on the thumb piece 14 side.

In addition, in the embodiment, the present invention has been explained by taking as an example a door lock in which the internal pressure 6 and the opposite shore outer bowl 7, and the external pressure 9 and the external outer bowl 10 are individually manufactured and integrated. Of course, the same method can be applied to a door lock in which the internal pressure 6 and external pressure 9 are integrally molded.

The present invention has the above-mentioned configuration, and can be locked with a simple operation of pressing the thumb piece from the inside with your fingertip.
In addition, the thumb piece can be switched to the unlocked state from outside the door if necessary, and the thumb piece itself is directly operated to unlock the door. An unlocking operation tool is installed in the part, and
The structure is simpler and cheaper than a structure in which the operating tool and the thumb piece are interlocked and connected by an unlocking operation mechanism, and the thumb piece is indirectly unlocked by the operating tool. Since the body is brought into direct contact with the thumb piece and the thumb piece is directly engaged with the nozzle to interact with each other, for example, the door can be unlocked by feeling for the thumb piece on the inside of the door from the outside. There is less risk of the lock becoming impossible to unlock, such as those with a similar structure or those in which the thumb piece is engaged with the bundle via an intermediate member.
The reliability of operation is extremely high.

In other words, if you simply provide a through hole in the door, it is a small hole and the thumb piece is far away from the opening, so even if you insert something into the small hole to operate the thumb piece, it will not work in case of an emergency. Particularly when this occurs, psychological turmoil may cause the object to not be inserted properly into the small hole, or the object may get stuck on the hole wall, or the object may be bent, making it difficult to bring it into contact with the desired thumb piece. However, in the present invention, a shaft is inserted into the indoor group in advance, and the inner end of this shaft is always in contact with the thumb piece. Since the outer end is on the outer end side of the small hole, the unlocking operation can be performed easily and quickly even if there is psychological turmoil.

Moreover, since there are no problems that are likely to occur due to the existence of an intermediate member, such as poor connection between the intermediate member and the thumb piece, or problems that tend to occur due to the existence of an intermediate member, the reliability and speed of unlocking can be greatly improved. It has the effect of

Furthermore, the free end of the shaft is located near the outer end of the small hole for external pressure, so that it can be displayed externally that it is locked, but it cannot be unlocked from the outside by pressing with a fingertip. However, in case of an emergency, it is possible to unlock the shaft by pushing back the free end of the shaft with a thin rod-like member nearby, and there is also an indicator that indicates whether the shaft is locked or unlocked. In addition to being used as a member for unlocking the lock from the outside in an emergency, the thumb piece and shaft are structured so that they directly contact and interact with each other, with an intermediate member placed between them. Therefore, the number of constituent members is small and the structure is simple.

Note that if the free end surface of the shaft body 10 is colored, the display function can be more reliably performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a perspective view, Fig. 2 is a vertical sectional view, Fig. 3 is a front view of the main parts, Fig. 4 is an operational view, and Fig. 5 is a separate view. FIG. 1... Indoor group, 2a, 2b... Bundle, 3... Engaging protrusion, 4... Square core shaft, 6... Internal pressure, 9... External pressure, 11.
...Engaging portion, 14...Thumb piece, 20
...Shaft body, 21 small holes, A...Click device.

Claims (1)

[Scope of utility model registration request] Bundles are provided on both the inside and outside surfaces of an indoor door that can be opened and closed in a swinging manner, engagement protrusions that can be freely retracted and retracted are provided on the end faces, and a square core shaft that rotates together with these bundles is installed between the two bundles, Even when rotating either the inner or outer bundle,
In the door lock configured to cause the engaging protrusion to move in and out through the square core shaft, an engaging portion that rotates together with the bundle is provided on the inner end side of the inner bundle, and the inner bundle is rotated. The movably supported opposite bank includes a thumb piece that can be freely engaged and disengaged from the engaging portion, and a click device that positions the thumb piece in a position where it is engaged with the engaging portion and a position where this engagement is released. and an external member that rotatably holds the outer bundle, the inner end of a shaft that is slidable in the axial direction penetrating the indoor door is provided in direct contact with the thumb piece. is provided with a small hole for pressing the outer end of the shaft, and in a locked state in which the thumb piece is engaged with the engaging portion, the outer end of the shaft is located on the outer end side of the small hole. A door lock characterized in that, in an unlocked state, the outer end of the shaft body is positioned deep within the small hole.