JPH10102852A - Lock for sliding door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a lock for a sliding door usable for a sliding door having a small thickness and to make a notch for attachment at a stile side as small as possible. SOLUTION: This lock comprise a first rack 61 guided in a movable manner up and down within an outer frame and coupled to a first rack 61 coupled to an inner cylinder of a cylinder lock through a pinion, an operation plate 6 forming a second rack 62 in parallel to the first rack, an operation gear 73 supported in a freely rotatable manner by a first horizontal shaft 71, a follower member 70 extending a locking arm 7 and unlocking arm 7a symmetrically relatively to a first horizontal shaft 71 coupled in one united body with the operating gear 73, and an idle pinion 75 supported by the second horizontal shaft 72 in parallel to the first horizontal shaft 71 and always interlocked with both the second rack 62 of the operating plate and the operating gear 73. In response to rise or fall of the operation plate 6, the locking arm 7 or unlocking arm 7a is selectively is contacted to a drive plate of the locking mechanism inside the frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sliding door lock for locking two sliding doors at a joint thereof.

[0002]

2. Description of the Related Art A sliding door lock disclosed in Japanese Patent Publication No. Hei 6-25504 is a sliding door lock in which a baffle is provided on an inner frame side (a frame in a sliding door on the indoor side) as described in the publication. It has been proposed to be able to cope with a vertical displacement between sliding doors and a static or dynamic fluctuation of a gap in a thickness direction and to achieve a reliable locking / unlocking operation.

[0003] However, the conventional sliding door lock has a problem that it is difficult to adopt it for a sliding door having a small thickness. The reason for this is, for example, partly because, in part, the holder in the outer frame that pivotally supports the pair of arms is movable back and forth (in the thickness direction of the sliding door).

On the other hand, the cylinder lock attached to the outer frame is of a type in which the inner cylinder slides back and forth, and the thickness of the locking mechanism on the outer frame is considerably large. It will be.

The present applicant has developed a sliding door lock which can be applied to a sliding door having a small thickness.
-329914.

[0006] The sliding door lock according to the invention of the prior application is provided with a boom pivotally supported by an inner frame attached to the inner frame and being disengaged from a strike plate of the outer frame; A drive plate that is operated by an operation member from the indoor side; an engagement piece protruding from the drive plate toward an outer frame attached to the outer frame; a cylinder lock mounted on the outer frame; An operating plate provided on the frame so as to be vertically movable and having a first rack and a pair of second racks; supported on the outer frame and coupled to the inner cylinder of the cylinder lock, and attached to the first rack of the operating plate. A first pinion that meshes; a pair of second pinions supported by the outer frame and selectively meshing with a pair of second racks of the operation plate; a second pinion integrally provided on one of the second pinions; Pinio Locking arms with the pivoting causes swung hook locking position unlocking position in contact with the engagement piece of the drive plate and; on the other of the second pinion integrally provided,
An unlocking arm for bringing the driving plate into contact with the engaging piece and swinging the lock at the locking position back to the unlocking position with rotation of the other second pinion; and locking the unlocking arm and the unlocking arm in the outer frame. And a return spring for urging in a direction in which it is housed.

However, the operating plate is formed by, for example, bending one plate material into an L-shape, and includes a first rack in one piece and a pair of second racks continuous in the vertical direction in the other piece. In order to prevent the second rack from hitting the cylinder lock during its up-and-down stroke, a certain length is required at the intermediate portion, that is, between the first rack and the second rack for escape. Will be.

[0008] When the length of the operating plate is increased, the length of the lock mechanism on the outer frame side is also increased, and it is not possible to meet the demand for manufacturing the whole as compact as possible. Further, there remains a problem that notches for mounting the inner frame and the outer frame which should be formed to have the same size have to be enlarged for the latter.

[0009]

SUMMARY OF THE INVENTION The sliding door lock of the present invention
It has been proposed for the purpose of improving it so that it can be applied to a sliding door having a small thickness, and shortening the length of a lock mechanism on an outer frame side as much as possible.

[0010]

SUMMARY OF THE INVENTION To achieve the above object, a sliding door lock according to the present invention is provided with a clasp pivotally supported by an inner frame attached to an inner frame and engaged with and disengaged from a strike plate of the outer frame. A drive plate that is provided on the frame so as to be vertically movable and is linked to the camera, and is operated by an operation member from the indoor side;
An engagement piece protruding from the drive plate toward the outer frame attached to the outer frame, a cylinder lock mounted on the outer frame, and a guide vertically movable by the outer frame, and parallel to each other in a vertical direction. An operating plate formed with a first rack and a second rack extending to the outer frame, a first pinion supported by the outer frame and coupled to the inner cylinder of the cylinder lock, and meshing with the first rack of the operating plate; An operating gear rotatably supported on a first horizontal axis in the frame, and a driven member integrally coupled to the operating gear and extending the locking arm and the unlocking arm symmetrically with respect to the first horizontal axis. And an idle pinion rotatably supported by a second horizontal axis extending in parallel with the first horizontal axis in the outer frame and constantly meshing with both the second rack and the operation gear of the operation plate, Working plate from neutral position Temperature or in response to downward, is characterized in that so as to abut against the engaging pieces of selectively drive plate locking arm or unlocking arm.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings. 1 and 2,
Reference numeral 10 denotes a frame of an indoor sliding door, that is, an inner frame, and reference numeral 20 denotes a frame of an outdoor sliding door, that is, an outer frame.

The box-shaped inner frame 1 is fixed to the inner frame 10 together with the inner decorative panel 11 and the front panel 12 by screws 91, 92 and the like, and the box-shaped outer frame 2 is similarly formed with the outer decorative panel 2
1, together with the strike plate 22 and the mounting plate 23,
Is fixed with screws 93 or the like.

The lock 3, which is a locking member pivotally supported by the horizontal shaft 31 in the inner frame 1, is swung by the vertical movement of the drive plate 4, which will be described later, and is inserted into the engagement hole 24 of the strike 22 of the outer frame 20. Unlock and occupy the locked or unlocked position.

A drive plate 4 which is provided in the inner frame 1 so as to be vertically movable so as to be guided by an arbitrary guide means such as the inner wall surface of the frame 1 is operated by the operation member 41 from the room side by a finger. .

The operating member 41 includes the inner decorative plate 11 and the stop plate 1.
3 and is moved up and down together with the drive plate 4 by the knob 42. The operation member 41 and the drive plate 4 are connected by a pin 43.

For example, in the drive plate 4 having a U-shaped cross section, the engagement piece 4 is directed toward the outer frame 2 of the outer frame 20.
4 projecting integrally or separately. The engaging piece 44 in the illustrated example is entirely L-shaped, and is fixed to the bottom surface of the drive plate 4 with screws or the like.

A non-circular engaging hole 32 such as a bar-shaped member is provided in the above-mentioned cam 3 in the thickness direction, and a driving pin 45 fixed to the driving plate 4 is loosely fitted in the engaging hole 32. It is.

When the driving plate 4 moves downward in FIG. 1 due to the existence of such a linking means composed of the driving pin 45 and the engaging hole 32, the stick 3 is swung out as shown by the arrow A, and the strike plate 22 is moved. Is locked in the locking hole 24 and is locked. When the drive plate 4 returns upward, the stick 3 is swung back in the direction opposite to the arrow A, and returns to the unlocked position in FIG.

In FIG. 1, reference numeral 46 denotes a protective hood provided in connection with the drive plate 4 so as to be able to selectively protrude horizontally from the inner frame 1 at the time of locking in order to prevent unauthorized unlocking. Relief holes for the horizontal shaft 31 provided in the drive plate 4;
Reference numeral 3 denotes a click spring of the kama 3, and reference numeral 34 denotes a locking piece which is actuated by the drive plate 4 and selectively fixes the kama 3 in a locked position.

The above-described inner frame 1 on the inner frame 10 side
Since the lock mechanism described in the above is disclosed in the above-mentioned publications and the like, it is well-known, and a more detailed description of its structure and operation will be omitted here.

On the other hand, as shown in FIGS.
A disk tumbler lock or other cylinder lock 5 is mounted on the upper portion of the outer frame 2 attached to the outer frame 2 so that the key insertion direction K is perpendicular to the strike plate 22. It is connected to a first pinion 53 supported in the outer frame 2 via a tailpiece 52.

An operating plate 6 is provided in the outer frame 2 so as to be movable up and down so as to be guided by any guide means such as the inner wall surface of the frame 2.

The operation plate 6 is, for example, a plate-like body as clearly shown in FIG. 3, and has a first end (the upper end in the figure) in the center.
The rack 61 is provided with a second rack 62 on one side edge of the other end.
In addition, a vertically long relief hole 63 is opened below the first rack 61 to avoid interference with a first horizontal axis described later.

On the other hand, as shown in FIG. 1 and FIG. 2, a first horizontal shaft 71 penetrating through the outer frame 2 horizontally,
And a second horizontal shaft 72 implanted on the inner surface of one of the side plates of the outer frame 2.

The first horizontal shaft 71 is connected to the first rack 6
The first horizontal shaft 71 rotatably supports an operating gear 73. The first horizontal shaft 71 is rotatably supported.

As shown in FIG. 4, a plate-like driven member 70 having an overall shape of an ellipse is integrally mounted on the inner end surface of the operating gear 73.

In the illustrated embodiment, a ring embankment 71a having the same height as the thickness of the driven member 70 is formed coaxially with the inner end surface of the operating gear 73, and this ring embankment 71a is
After being fitted in the center opening of the gear No. 0, the operating gear 7 is
3 and the driven member 70 are integrally connected.

In FIG. 2, reference numeral 74 denotes a retaining ring. As is apparent from FIG. 2, the operating gear 73 and the driven member 70 integrally connected thereto are composed of the operating plate 6 and the retaining ring 7.
4 is supported on a first horizontal shaft 71.

On the other hand, as shown in FIGS. 1 and 2, an idle pinion 75 is rotatably supported on the second horizontal shaft 72. The idle pinion 75 is connected to the second rack 62 of the operation plate. It always meshes with the operating gear 73.

The driven member 70 has a locking arm 7 and an unlocking arm 7a which extend symmetrically with respect to the first horizontal axis.
And the second rack 62 via the idle pinion 75.

The angular position of the driven member 70 with respect to the second rack 62 is, as shown in FIG.
Is set so that the driven member is substantially vertical when the substantially central teeth of the driven gear engage with the idle pinion 75, that is, the locking and unlocking arms 7, 7a are completely housed in the outer frame 2. .

The module and the number of teeth of the operating gear 73 provide a sufficient rotation angle for locking and unlocking the unlocking and unlocking arms 7 and 7a, which will be described later, with respect to a fixed movement amount of the operating plate 6. To be set.

In FIG. 2, in order to make the drawing clear and avoid complication, the second horizontal axis 7
Although 2 is a so-called cantilever shaft, it may be provided so as to penetrate the outer frame 12 similarly to the first horizontal shaft 71.

Regarding the sliding door lock of the present invention having the above-described structure,
The operation will be described with reference to FIGS.

When the locking / unlocking operation is performed by the knob 42 of the operation member 41 from the indoor side, the driving plate 4 in the inner frame 1 is moved up and down independently of the locking mechanism in the outer frame 2,
Is locked and unlocked in the same manner as the conventional one, so only the locking and unlocking operation using the key will be described here.

In the unlocked state shown in FIG. 1, when a key (not shown) is inserted into the cylinder lock 5 in the direction indicated by the arrow K and rotated, for example, clockwise, the first pinion 53 and the first pinion 53 are rotated.
The operating plate 6 meshing with the rack 61 is raised.

Then, as shown in FIG. 5, the idle pinion 75 meshing with the second rack 62 on the operation plate 6 rotates counterclockwise and the operation gear 73 rotates clockwise, respectively.
The locking arm 7 is swung clockwise in FIG. 5 and in the direction of arrow B in FIG.

Then, the locking arm 7 presses the engaging piece 44 of the driving plate 4 from above to lower the driving plate 4, so that the stick 3 swings out as shown by the arrow A, and the engagement hole of the front plate 22 is formed. 24 to be locked.

After locking, the key is turned counterclockwise to return to the original angular position and pulled out to complete the locking operation. At this time, all the members of the lock mechanism on the outer frame side return to the initial positions (see FIG. 4).

To unlock the locked door, the key inserted in the cylinder lock 5 is turned counterclockwise.

In this case, when the operation plate 6 descends in accordance with the locking operation, as shown in FIG. 6, the idle pinion 75 meshing with the second rack 62 is moved clockwise to the operation gear 73.
Rotate in the counterclockwise direction, and swing the unlocking arm 7a counterclockwise in FIG. 6 and in the direction of arrow C in FIG.

Then, the unlocking arm 7a presses the engaging piece 44 of the driving plate 4 from below to raise the driving plate 4, so that the stick 3 swings back from the locking position and returns to the unlocking position. .

After unlocking, the unlocking operation is completed by turning the key clockwise to return to the original angular position and pulling out. At this time, all the members of the lock mechanism on the outer frame side return to their initial positions (see FIG. 1).

[0044]

According to the above-described sliding door lock of the present invention, the lock mechanism attached to the outer frame on the side of the outer frame forms a right angle with a strike plate such as a holder found in a conventional sliding door lock. Since there is no horizontally movable frame, the mechanism can be made thinner as a whole, and it has an effect that it can be applied sufficiently to a sliding door having a very small thickness.

Further, since the lock mechanism on the outer frame only swings the driven member directly connected to the gear mechanism in accordance with the rise and fall of the operation plate, the mechanism is simplified as a whole, and the reliability and durability are correspondingly reduced. The performance is improved.

Furthermore, as compared with the invention of Japanese Patent Application No. 7-329914 filed by the applicant of the present invention, the locking arm or the unlocking arm constituting the driven member is driven not by the rack but by the idle pinion. Therefore, the locking arm or the unlocking arm can be made close to the cylinder lock to reduce the length of the lock mechanism in the vertical direction, and there is an advantage that the notch for attachment to the outer frame does not need to be large.

In addition, the sliding door lock according to the present invention not only can cope with a vertical displacement between the two sliding doors and a static or dynamic fluctuation in the thickness direction, but also can achieve a reliable locking / unlocking operation. But also.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional side view showing an embodiment of a sliding door lock according to the present invention.

FIG. 2 is a rear view of the outer decorative plate removed and partially shown in section.

FIG. 3 is a side view of the operation plate.

FIG. 4 is a partial cross-sectional side view of a main part of the outer lock mechanism taken along line IV-IV in FIG. 2, showing a normal state.

FIG. 5 is a partial cross-sectional side view of a main part of the outer lock mechanism as viewed from the line VV in FIG. 2, showing an operation for locking.

FIG. 6 is a partial cross-sectional side view of a main part of the outer lock mechanism as viewed from the line VI-VI in FIG. 2, showing an operation for unlocking;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Inner frame 20 Outer frame 1 Inner frame 2 Outer frame 22 Strike plate 3 Kama 4 Drive plate 41 Operating member 44 Engagement piece 5 Cylinder 51 Inner cylinder 52 First pinion 6 Operation plate 61 First rack 62 Second rack 63 Escape hole Reference Signs List 70 Followed member 7 Locking arm 7a Unlocking arm 71 First horizontal axis 72 Second horizontal axis 73 Operating gear 75 Idle pinion

Claims (1)

[Claims] An inner frame attached to the inner frame, pivotally supported by a strike plate of the outer frame, and a boom provided on the inner frame so as to be vertically movable and linked to the kama;
A drive plate operated by the operation member from the indoor side, an engagement piece protruding from the drive plate toward the outer frame attached to the outer frame, a cylinder lock mounted on the outer frame, and a vertical movement on the outer frame. An actuating plate guided as possible and forming a first rack and a second rack extending in parallel with each other in the up-down direction, and supported by the outer frame and coupled to the inner cylinder of the cylinder lock; A first pinion that meshes with a first rack of plates, an operating gear rotatably supported on a first horizontal axis in the outer frame, and are integrally coupled to the operating gear and are symmetrical about the first horizontal axis. A driven member having a locking arm and an unlocking arm extended therein, and a second horizontal axis extending in parallel with the first horizontal axis in the outer frame and rotatably supported by the second rack of the operation plate and the operation member Idol that always meshes with both gears A sliding door having a non-operating mechanism, wherein the locking arm or the unlocking arm is selectively brought into contact with the engagement piece of the drive plate in accordance with the rise or fall of the operating plate from the neutral position. .