JPH0532612Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a sliding door security lock that limits the opening width of a sliding door and prevents unauthorized intrusion from the outside.
In particular, the present invention relates to a sliding door guard lock that can change the opening size of the sliding door to suit the purpose.

[Conventional technology]

Conventional sliding door safety locks engaged a lock provided on the indoor sliding door with a strike provided on the outdoor sliding door (Japanese Patent Application Laid-open No. 47481/1983 and Japanese Patent Application Laid-open No. 63-47481).
(See Publication No. 47482).

In the case of such a sliding door safety lock, when the lock provided on the indoor sliding door is locked, the locking piece protruding from the lock must not match the position of the receiving hole of the strike provided on the outdoor sliding door. The guard lock cannot be locked smoothly, but the indoor and outdoor sliding doors each have width dimension errors, and there is also an error in the distance between the pillars of the stile, so when attaching the guard lock to the sliding door, it is necessary to It is necessary to check the relative position of the locking piece and the receiving hole of the strike into which the locking piece engages, adjust the position correctly, and then fix the lock, making it troublesome to install the guard lock and prolonging the installation time.

In order to solve the problems of the conventional sliding door guard lock, the applicant has applied for a sliding door guard lock in which a strike is provided on the sliding door frame.

[The problem that the idea attempts to solve]

Both the sliding door safety lock with a strike on the outdoor sliding door and the sliding door safety lock with a strike on the sliding door stile still have the following problems.

In other words, the opening width of the sliding door, which is limited by the guard lock, may be desired to be wider or narrower depending on the purpose of the sliding door, but the opening width is determined by the length of the guard lever and cannot be changed. It was inconvenient.

The present invention was made to solve this problem, and allows the opening width of the sliding door to be easily adjusted to any size according to the purpose of the sliding door.

[Means to solve the problem]

In order to achieve the above object, in the security lock of the present invention, the amount of rotation of the lever that engages with the strike when the door is locked and rotates while being engaged with the strike when the sliding door is opened is regulated to an arbitrary amount. A male screw whose head is exposed on the front of the lock case is pivotally connected to the lock case, and an adjuster pin having a female thread that is screwed to the male screw is connected to a link stopper which is pivotally connected to the lock case. A hub having a cam is fitted in the lock case, and a link mechanism is provided in the case so that the joint pin rotates when pushed by the cam and a joint pin provided at the tip engages in the receiving hole, A stopper piece provided on the link stopper is configured to protrude into a rotation locus of a guide pin provided on the link mechanism.

[Effect]

The action of the precautionary lock constructed as described above is as follows.

(Locking) When the hub is rotated in the locking direction, the cam provided on the hub pushes the link mechanism, and the joint pin provided on the link mechanism engages in the receiving hole of the strike.

(Opening a locked sliding door) When the sliding door opens, the joint pin that has been engaged in the receiving hole of the strike slides through the vertical hole connected to the receiving hole, and the link mechanism rotates accordingly.

The link mechanism stops rotating when the guide pin hits the stopper piece, and the joint pin sliding in the vertical hole also stops.

By stopping the joint pin, opening of the sliding door is also restricted.

(Adjusting the opening amount of the sliding door) When the unlocked sliding door is opened and a screwdriver is inserted into the head of the male screw exposed at the front and the male screw is rotated, the adjustment pin that is threaded into the male screw moves along the male screw. The link stopper that pivots the adjuster pin rotates.

When the link stopper rotates, the contact position between the stopper piece of the link stopper and the guide pin changes, so the amount of rotation of the link mechanism changes, and the opening width of the sliding door changes.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows a longitudinal sectional view of the precautionary lock A and the strike B, and FIG. 2 shows a side view of the precautionary lock A.

In FIG. 1, a lock case 1 is embedded in the end of an indoor sliding door, and fronts 2 and 3 are attached to the end of the sliding door of the lock case 1.

A hub 4 is rotatably fitted to the side wall of the lock case 1, and the hub 4 can be locked or unlocked by thumbturn operation on the indoor side or rotational operation of a key inserted into the cylinder lock on the outdoor side. Rotate to.

The outer shape of the hub 4 is approximately square, and a bifurcated cam 5 is formed on one side of the hub 4.

One end 7a of a spring 7 whose intermediate portion is pivoted to a pin 6 installed on the side wall of the lock case 1 is locked to the lock case 1, and the other end 7b presses the hub 4.

Above the hub 4, one end of a rotating arm 9 is pivotally connected to a pin 8 on which the side wall of the lock case 1 is attached, and a guard arm 11 is attached to a shaft 10 provided at the other end of the rotating arm 9. One end is pivotally connected, and the guard arm 11
A joint pin 12 is provided at the other end.

The joint pin 12 protrudes from both side surfaces of the guard arm 11, as shown in FIG. 2, which is a side view of the guard lock A.

The rotating arm 9 is provided with guide pins 13 that protrude from both sides, and one side of a drive arm 15 is pivotally connected to a pin 14 provided below the guide pin 13.

The other side of the drive arm 15 is provided with a protrusion 16 that protrudes along the rotation locus of the cam 5 and a pin 17 that protrudes from both sides of the drive arm 15 .

One end of the pin 17 is slidably fitted into a cam groove 18 carved on the side surface of the lock case 1, one end of a locking arm 19 is pivotally connected to the other end, and the other end of the locking arm 19 is connected to the guard arm 11. It is pivotally connected to the middle part of.

Therefore, the rotating arm 9, the guard arm 11, the driving arm 15, and the locking arm 19 constitute a four-section link mechanism, and the cam 5 rotates to lock the protrusion 1.
6, the joint pin 12 at the tip of the guard arm 11 projects in the direction of strike B (see FIG. 4).

The cam groove 18 is for regulating the rotating direction of the four-joint link mechanism, and the slanted groove 18a rises toward the front 2 and 3, and the cam groove 18 extends from the end of the slanted groove 18a toward the front 2 and 3. It consists of a horizontal groove 18b extending substantially horizontally.

The fronts 2 and 3 are provided with an opening 20 (see FIG. 2) for allowing the guard arm 11 to protrude, and a hole 21 for inserting a tool is provided in the front 2 above the opening 20. A tapered hole 22 concentric with the hole 21 is provided in the hole 21 .

The tapered hole 22 has a dish-shaped head 2 of a male screw 23.
Nut 2 into which 3a is inserted and screwed into male thread 23
4, the male screw 23 is rotatably fitted to the front 3, and when the tip of a screwdriver is placed in the Phillips groove 23b (see Figure 2) provided on the end surface of the head 23a and turned, the male screw 23 is attached to the front 3. 23 rotates.

The male thread 23 has the female thread 2 of the adjuster pin 25.
5a (see Figure 7).

The adjuster pin 25 has shaft portions 25b and 2 on both sides.
5c is provided protrudingly, the shaft portion 25b is fitted into the guide groove 26a of the guide member 26 fixed to the side wall of the lock case 1, and the shaft portion 25c is pivotally connected to a pin 27 installed in the lock case 1. It is inserted into the hole 29 of the link stopper 28.

The hole 29 is a vertically elongated hole, and when the adjuster pin 25 moves along the male screw 23, the link stopper 28 rotates about the pin 27 as a fulcrum.

One of the guide pins 13 protruding from both side walls of the rotating arm 9 is fitted into a guide groove 30 provided on the side wall of the lock case 1, and the other is inserted into the link stopper 2.
The rotating arm 9 comes into contact with a stopper piece 31 extending below the rotating arm 9 to restrict the amount of rotation of the rotating arm 9.

As shown in FIGS. 1 and 3, the strike B fixed to the sliding door frame is provided with a receiving hole 32 having a width larger than the width of the joint pin 12, and a vertically elongated hole above the receiving hole 32. 33 connects.

The width of the vertical hole 33 is smaller than the width of the joint pin, but larger than the width of the guard arm 11.

Note that the spring 35 fitted to the pin 34 installed in the lock case 1 moves the drive arm 15 into the inclined groove 18a.
This is for pressing toward the lower end of the
6 is a cover of the lock case 1. .

The operation of the sliding door safety lock configured as above will be explained.

(Unlocked state) As shown in FIG. 1, the hub 4 is at an unlocked angle, and the cam 5 is spaced apart from the protrusion 16.

The drive arm 15, which is pressed by the spring 35, is at the end of rotation in the counterclockwise direction with the pin 14 as a fulcrum;
The rotating arm 9 is pressed by the pin 14 and the lock case 1
The joint pin 12 at the tip of the guard arm 11 is in contact with the rear side wall of the front opening 20 of the front 2, 3.
Immersed inside.

As shown, in the unlocked state in which the sliding door safety lock A is not engaged with the strike B, the sliding door can be fully opened.

(Lock) Turn the key inserted into the cylinder lock from the thumb turn inside the room or from outside, and turn the hub 4 counterclockwise.
When rotated 90 degrees, the cam 5 pushes the protrusion 16 of the drive arm 15, and the pin 17 moves to the end of the inclined groove 18a, as shown in FIG.

As the pin 17 moves upward, the locking arm 19 rises, the guard arm 11 rotates about the shaft 10, and the joint pin 12 moves to the front 2, 3.
The receiving hole 32 of the strike B protrudes from the opening 20 of the strike B.
, and moves to the back side of the vertically long hole 33.

The hub 4 is pressed by the other end 7b of the spring 7 and stably held at the locking angle, and the cam 5 of the hub 4 is pressed by the spring 35 and the drive arm 15 tries to descend.
This prevents the protrusion 16 from descending.

In this way, the sliding door guard lock A is kept locked.

(Opening the sliding door) When the sliding door is opened in the direction of the arrow F with the sliding door guard lock locked, the sliding door guard A moves together with the sliding door in the direction of the arrow F, and the joint pin 12 moves in the direction of the arrow F, as shown in Fig. 5. It corresponds to the back side of

Furthermore, when the sliding door guard lock A moves in the direction of arrow F, the pin 17 moves in the front 2 and 3 directions along the horizontal groove 18b, and the rotating arm 19 rotates counterclockwise about the pin 8 as a fulcrum.

The rotating arm 19 stops rotating when the guide pin 13 hits the stopper piece 31, and the opening degree of the sliding door is limited to dimension ₁ .

Although the opening degree of the sliding door is limited to a width that prevents unauthorized entry by outsiders, depending on the purpose of the sliding door, it may be desirable to keep the opening amount ₁ small.

(Adjusting the opening amount of the sliding door) To adjust the opening amount ₁ of the sliding door to suit the purpose of the sliding door, open the sliding door with the precautionary lock A unlocked (see Figure 1), and insert a screwdriver into the hole 21. Insert the tip of the screwdriver into the Phillips groove 23b and rotate the male screw 23.

Due to the rotation of the male screw 23, the adjustment pin 25 is moved by the male screw 23, and the adjustment pin 25 is moved by the male screw 23.
The link stopper 28 into which the link stopper 28 is fitted rotates clockwise or counterclockwise.

When the link stopper 28 rotates counterclockwise, the stopper piece 31 moves away from the front 2, and the amount of rotation of the guide pin 13 is limited.

If the safety lock A adjusted in this way is locked after the sliding door is closed, the opening amount of the sliding door will be limited to the dimension ₂ shown in FIG.

That is, since the stopper piece 31 is located away from the front 2, the stopper piece 31
A rotating arm 9 having a guide pin 13 that abuts on the
The amount of rotation of the guard arm 11 becomes smaller, and accordingly, the amount of protrusion of the joint pin 12 at the tip of the guard arm 11 becomes smaller, and the opening amount ₂ of the sliding door becomes smaller.

As described above, the position of the stopper piece 31 that determines the opening amount of the sliding door can be finely adjusted to any desired amount by rotating the male screw 23.

[Effect of idea]

Since the present invention is configured as described above, it produces the effects described below.

(1) The opening amount of the sliding door can be adjusted simply by turning the male screw using a screwdriver, making the adjustment operation extremely easy.

Furthermore, it is convenient because the opening amount of the sliding door can be adjusted to any desired amount depending on the amount of rotation of the male screw.

(2) Since the opening amount of the sliding door can be changed over a wide range, one security lock can be applied to sliding doors for various purposes.

Therefore, it is no longer necessary to prepare various types of security locks depending on the purpose of the sliding door.

(3) The user of the guard lock can adjust the opening amount of the sliding door at any time as necessary.

There is no need for any trouble such as replacing parts when changing the opening amount.

[Brief explanation of the drawing]

1 to 7 show embodiments of the present invention.
The figure is a longitudinal sectional view of the sliding door guard lock and strike in the unlocked state, Figure 2 is a side view of the sliding door guard lock shown above, and Figure 3 is a side view of the sliding door guard lock in the unlocked state.
Figure 4 is a side view of the strike; Figure 4 is a vertical sectional view of the sliding door guard lock and strike in the locked state; Figure 5 is a vertical sectional view of the sliding door guard lock and strike when the sliding door is opened in the locked state; The figure is a longitudinal sectional view of the sliding door guard lock and strike when the amount of opening of the sliding door is adjusted to a small value, and FIG. 7 is a perspective view of the adjuster pin screwed into the male thread. A...Sliding door guard lock, B...Strike, 1...
Lock case, 2, 3...Front, 4...Hub, 5
...Cam, 9...Rotating arm, 11...Guard arm, 12...Joint pin, 13...Guide pin, 23...Male thread, 23a...Head, 25...
...Adjustment stop pin, 28...Link stopper,
31... Stopper piece, 32... Receiving hole, 33...
Vertical hole.

Claims (1)

[Scope of utility model registration request] A receiving hole and a vertical hole connected to the receiving hole are provided in the strike attached to the sliding door frame, and a male screw with the head exposed at the front is pivotally attached to the lock case embedded in the end of the sliding door, and a male screw is screwed into the male screw. An adjuster pin having a matching female thread is fitted into a link stopper which is pivotally connected to the lock case, a cam is provided on a hub which is rotatably fitted to the lock case, and a cam is provided in the hub which is pushed by the cam to the case. A link mechanism is provided in which a joint pin provided at the tip of the link mechanism rotates and engages in the receiving hole, and a stopper piece provided in the link stopper projects into a rotation locus of a guide pin provided in the link mechanism. A sliding door safety lock that is characterized by: