JPH0452376Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a door locking device (hereinafter simply referred to as a locking device), and is particularly suitable for doors that tend to have low installation accuracy, such as gates. The present invention relates to a locking device that is applicable and easy to use.

[Conventional technology and problems]

For example, for double-door gates, one gate is usually anchored to the ground with a so-called French drop, the free edge of the other gate is aligned with that of one fixed gate, and then a bar is inserted between the two. or a bolt-like latch rotatably supported at one end, or a latch bolt whose head projects from the side edge of the other gate and is recessed into the side edge of one gate. By immersing in the strike hole,
It is configured to lock one gate to which the other gate is fixed.

However, since gates are usually constructed with low precision and have a large play, it is generally difficult to operate the bolts and latch bolts smoothly. In addition, the rotating bolt-like latch does not affect the operation of the latch even if there is some play in the gate, but when operating the latch, it is necessary to align the free edge of the gate while operating the latch. The disadvantage is that it does not have the same ease of use. This inconvenience is the same for the above-mentioned bolts.

[Purpose of invention]

Therefore, an object of the present invention is to provide a locking device that can be applied to poorly installed doors and is easy to use.

[Means for solving problems]

In order to achieve the above object, the present invention provides a horizontal locking bar on the other free edge of the door, which is supported so that one side edge can rotate around a substantially vertical door axis. , the vicinity of one end near the door shaft is supported so that it can rotate around a nearly vertical support shaft, and the other end of the lock bar protruding from the free edge of the door locks the door when the door is closed. energized to assume an angular position that deviates in the direction of travel;
A substantially horizontal first clamping body is placed on a fixed part such as a door frame that faces the free edge of the door when the door is closed, and is arranged approximately parallel to the first clamping body through a space into which the other end of the lock bar enters. and a second clamping body having a shortened free end edge of the door so as not to interfere with the lock bar, and a catch that is movably guided in the horizontal direction near one end of the lock bar;
A control body is provided at one end of the lock bar that is biased in the direction of engagement from the door shaft side, and one end of the control body that engages with one end of the lock bar has a vertical surface inclined with respect to the direction of movement of the control body. It is characterized in that a certain cam surface and a locking surface, which is a vertical surface substantially parallel to the moving direction of the control body, are formed to intersect with each other.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, numerals 1 and 2 represent the first
The first and second gates 1 and 2 constitute a normal double-door gate, and the second gate 2 is fixed to the ground by a French drop (not shown). do.

A lock case 3 is attached to the inside of the free side edge of the first gate 1, and this lock case 3 has a lock bar generally designated by the reference numeral 4, as shown in FIGS. 1 and 2. It is rotatably supported.

The lock bar 4 in the illustrated embodiment has an approximately doglegged overall shape and a pair of stepped lever bodies 5, 5.
are arranged in parallel, and the first, second and third connecting pins 6, 7
A collar 9 is pivotally supported on a first connecting pin 6 at one end of the lock bar 4 (the right end in FIGS. 1 and 2), and A roller 11 is pivotally supported by the third connecting pin 8 at the other end, and is fitted in a rotatable manner. In addition, roller 11
has an outer peripheral surface projecting outward from the other end of the lock bar 4.

Further, the lock bar 4 has a first
A lock bar spring 13 as a torsion coil spring is rotatably supported on the lock case 3 by a substantially vertical support shaft 12 passing through between the second connecting pins 6 and 7, and is wound around the support shaft 12. Due to the elasticity of
In FIG. 1, the roller 11 at the other end of the lock bar 4 is biased clockwise in FIG. .

On the other hand, as shown in FIG. 1, a knob 14 is located near one end of the lock bar 4 inside the lock case 3.
An attached control body 15 is provided. The control body 15 in the illustrated embodiment is a block body that has a substantially vertical groove with a substantially V-shaped cross section that engages with the collar 9 at one end facing the lock bar 4 (the left end in FIG. 1). It is guided so that it can move left and right in a horizontal plane.

Of the pair of slopes forming the V-shape, the surface on which the collar 9 comes into elastic contact due to the elasticity of the lock bar spring 13, and which is inclined with respect to the moving direction of the control body 15, is a cam surface 16. The inner surface of the control body 15, which is a vertical plane that intersects with the control body 16 and is substantially parallel to the direction of movement of the control body, serves as a locking surface 17.

The control body 15 is pivoted to the left in FIG. It is biased in the direction of engagement with the collar 9.

On the other hand, as shown in FIGS. 1 and 2, at the side edge of the second gate 2, which is secured to the ground by a French drop or the like, in the closing direction of the first gate 1 (in the upper direction in FIG. ) Lock bar 4 due to movement to
A catcher 19 is mounted inside the part that interferes with the movement locus of.

The catcher 19 in the illustrated embodiment includes a plate-shaped first holding body 21 extending in a substantially horizontal direction, and a first holding body 21 that is connected to the first holding body 21 through a space into which the other end of the lock bar 4 enters.
A second clamping body 2 arranged substantially horizontally with the clamping body 21
2, and as is clear from Figure 1,
The end of the second clamping body 22 on the first gate 1 side is bent inward so as not to interfere with the moving trajectory of the roller 11. In order to avoid interference with the roller 11, the end of the second clamping body 22 on the gate side may be cut out, or the entire second clamping body 22 may be shifted to the left in FIG. Of course it's a good thing.

In the illustrated embodiment, the catcher 19 is box-shaped, and the first and second holding bodies 2
The space into which the other end of the lock lever 4, whose front and rear parts are partitioned by 1 and 22, is enclosed in this box is an opening formed at the end of the second clamping body 22 on the side of the first gate 1. It communicates with the outside space through.

Although it is not an essential component of the present invention, a locking device is provided inside the lock case 3 on the first gate 1 side. That is, as shown in FIG. 2, a locking plate 23 having a generally L-shaped overall shape is guided so as to be movable in the vertical direction above the other end of the control body 15. Similar to the normal door detsud bolt, the detsudokam 24
This dead cam 24 is connected to a cylinder lock (not shown) mounted on the outer surface of the first gate 1. Therefore, by rotating the inner cylinder of the cylinder lock with a key, the lock plate 23 is moved up and down via the dead cam 24, and its lower end is connected to the other end of the control body 15 and the inner surface of its guide frame. The control body 15 can be locked or unlocked by inserting it into or removing it from the space between them. The dead cam 24 also includes:
It is also connected to a thumb turn (not shown) protruding from the lock case 3 and a plug with a slot that accepts the edge of a coin, and by operating this thumb turn, etc., the control body 15 can be locked and unlocked from inside the gate. I can do it.

Furthermore, as shown in FIG.
Below the operating plate 25, which has a substantially fan-shaped outer shape, is attached to the swing shaft 26.
The engaging portion 15a is pivotably supported by the control body 15, is biased counterclockwise in FIG. (See Figure 1).

On the other hand, an operating cam 28 is integrally coupled to an operating shaft 27 that penetrates the lock case 3 in the thickness direction of the gate and is rotatably supported, and the operating plate 25 is implanted into this. It is locked to the actuating shaft 27 via the actuating pin 29 and the actuating cam 28.

In addition, a handle shaft (not shown) with a square cross section that is integrally connected to the handle 31 (see FIG. 1) is inserted into a hole with an irregular cross section that is formed along the central axis of the actuating shaft 27 and communicates with the external space. It is fitted.

With the above-described configuration, the control body 15 inside the lock case 3 can be operated by rotating the handle 31 of the gate.

[Effect]

The locking device according to an embodiment of the present invention configured as described above is configured such that when the gate is open, the first
As shown in the figure, a collar 9 at one end of the lock bar 4 is engaged with a V-shaped groove formed at one end of the control body 15.

In this state, the lock bar 4 is rotated by the elasticity of the lock bar spring 13 to an angular position where the roller 11 at the other end is deviated in the direction of movement of the gate when closed, and this angular position is different from that of the collar 9. Due to the engagement with the V-shaped groove of the control body 15, the roller 11
remains quasi-stable until it engages with the catcher 19.

However, the first gate 1 moves in the closing direction,
When the roller 11 at the other end of the lock bar comes into contact with the first clamping body 21 of the catcher, as the first gate 1 moves further in the closing direction, the lock bar 4 is moved to the first clamping body 21 as shown in FIG. While rolling the roller 11 along the lock bar spring 13
The other end is rotated counterclockwise against the elasticity of the catcher, and the other end is connected to the first and second holding members 21 and 22 of the catcher.
go in between. At the same time, the collar 9 at one end of the lock bar 4 also rotates counterclockwise about the support shaft 12, so that the collar 9 and the control body 1 in elastic contact with the collar 9 are rotated counterclockwise.
5 and the cam surface 16, the control body 15 moves to the right in FIG. 3 against the elasticity of the control body spring 18.

When the side edges of the first and second gates 1 and 2 are aligned and the gates are closed, the collar 9 no longer engages with the cam surface 16, and as shown in FIG. It moves to the left by the elasticity of the control body spring 18. As a result, the lock bar 4 is locked onto the control body 15 with the collar 9 riding on the locking surface 17. That is, the first gate 1 is locked to the second gate 2.

When the lock bar 4 is locked by the control body 15 as described above, as is clear from FIG.
In the illustrated embodiment, the clockwise rotation of the lock bar 4 is prevented by engagement with the lock bar 4, and the counterclockwise rotation of the lock bar 4 is prevented by the engagement with the hook formed at one end of the lock bar 4 and the lock case 3. This is prevented by engagement with the inner step. Therefore, the lock bar 4 is temporarily fixed to the lock case 3, and the other end is sandwiched between the first and second clamping bodies 21 and 22 of the catcher 19, so that the second The locked state of the first gate 1 by the gate 2 is maintained stably.

In this locked state, even if the second gate 2 is released from the ground due to a french drop or the like, and the second gate 2 becomes free, the first and The two gates 1 and 2 will not be disengaged and the gates will not open.

Further, as described above, the gates 1 and 2 can be locked from outside using a key, and from inside the gate using a thumb turn or the like.

When opening the gate, the knob 14 of the control body 15 is pushed to the right in FIG. 4 from inside the gate. Alternatively, the handle 31 of the first gate 1 is rotated from outside the gate. Then, the control body 15 moves to the right in FIG.
returns to the state shown in the first diagram through the state shown in the third diagram.

In the illustrated embodiment, the present invention is applied to double-sided gates, but the present invention is not limited to such type of gates. Needless to say, the present invention can also be applied to gates whose edges are fixed to gateposts, or ordinary doors whose edges are fitted into door frames.

〔effect〕

As is clear from the above description, the present invention locks the lock bar extending from the free edge of the door by sandwiching it between the first and second holding members of the catcher from the front and back. The door can be reliably locked even if there is some deviation in the horizontal direction. That is, the device of the present invention can be applied to doors that are poorly installed.

Further, when the lock bar is engaged with the catcher, the lock bar is rotated and the other end thereof is inserted into the catcher, and at the same time, one end of the lock bar is engaged with the control body so that the control body automatically locks the lock bar. Therefore, various effects such as being able to lock the door in one action and improving usability are achieved.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a locking device according to an embodiment of the present invention in the door open state, FIG. 2 is a partial cross-sectional rear view of the locking device in the door closed state, and FIGS. 3 and 4 are similar to FIG. 1. 3 shows the door in the middle of closing, and FIG. 4 shows the door in the closed state. 1, 2... Gate, 4... Lock bar, 9... Collar, 11... Roller, 12... Support shaft, 13...
Lock bar spring, 15... Control body, 16... Cam surface, 17... Locking surface, 18... Control body spring, 19
...Catcher, 21...First clamping body, 22...
Second clamping body.

Claims (1)

[Scope of utility model registration request] One side edge of the door is supported so that it can rotate around a nearly vertical door axis, and a horizontal lock bar is provided on the other free side edge of the door, and a horizontal lock bar is provided near one end near the door axis. The lock bar is supported so as to be rotatable around a substantially vertical support shaft, and the other end of the lock bar protruding from the free edge of the door assumes an angular position that deviates in the direction of movement of the door when the door is closed. On the other hand, when the door is closed, a substantially horizontal first clamping body and a space into which the other end of the lock bar enters a fixed part such as a door frame that faces the free edge of the door, and the first clamping body A second clamping body is provided, which is disposed approximately parallel to the lock bar, and has a shortened free end edge of the door so as not to interfere with the lock bar. A control body is provided which is biased in a direction to engage one end of the lock bar from the door shaft side, and a control body is provided at one end of the control body that engages with one end of the lock bar with respect to the direction of movement of the control body. A door locking device characterized in that a cam surface which is an inclined vertical surface and a locking surface which is a vertical surface substantially parallel to the moving direction of a control body are formed to intersect with each other.