JPH0249332Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a locking device for a flap door that is pivotally mounted on the outside of a window frame so as to be openable and closable.

[Conventional technology]

Conventionally, the simplest locking device mentioned above is
A lock device consisting of a receiving metal fitting and a foot lever is known, but according to this locking device, the receiving metal fitting needs to be fixed in a state that is located at the bottom of the window frame and protrudes inward, and on the other hand, the foot lever also has a flap. Since it is necessary to pivot inside the lower frame of the door, each component is exposed indoors through the window, resulting in an unsightly appearance.

Further, since the above device is configured to lock by the above mentioned handle lever and the receiving metal fitting coming into contact with each other, locking and unlocking operations using the above mentioned handle lever are performed by rotating the above mentioned handle lever while pulling the door inward. great force is required,
In particular, when attempting to lock the flap door in a sealed state against the window frame, a greater force is required, resulting in problems such as poor operability.

[Problem that the invention attempts to solve]

The present invention is to enable the push lever and the hook plate to move together in the lower frame of the door via the main body, and to pivot the push lever and the hook plate by applying a return force using a spring, and to close the window hole of the main body with a cover. With the exception of the handle part of the main body and the upper end of the upper push lever, all other parts can be internalized in the lower frame, giving a good appearance, and the door can be locked and unlocked smoothly with little force. The purpose was to make it easy to carry out.

[Means for solving problems]

In this invention, the main body has an approximately half-crank shape on the side, and a handle part is installed upright, and it is fixed on the lower frame of the flap door in an overlapping state, and the window holes are opened on the left and right sides of the flat plate part. The brackets are inserted into the openings of the lower frame from the edges and are bent downwardly into the lower frame, and the operating plate and the hook plate, which are hung from both left and right sides of the push lever, are connected to each other. The hook plate is rotatable in a locked state so that it can move together, and is pivotally attached by applying an engaging force by a spring mounted on the pivot shaft, and the hook plate is fixed to the window frame and has the above-mentioned shape. In order to solve the above-mentioned problems, the device is configured to be able to be releasably engaged with the receiving metal fitting protruding into the lower frame, while a cover is removably fitted into the window hole of the main body. It is something.

〔Example〕

FIG. 5 is an overall view of the flap door. The flap door 1 is attached at its upper end to the window frame 2 so that it can be opened and closed freely, and the flap door 1 is pivotally connected between the door 1 and the window frame 2. The open state of the door is maintained by the arm 3, and a locking device described later is provided on the lower frame 4 of the door and the lower frame 5 of the window frame 2 in the illustrated section A.

1 to 4 show the locking device of the present invention, which includes a main body 6, a push lever 7, a hook plate 8, a spring 9, a receiving fitting 10, a cover 11, and a pivot 12 as constituent members.

The main body 6 has a flat plate portion 6 formed by bending a metal plate or the like.
a, an upright plate portion 6b, and a lower curved plate portion 6c, the side surface is formed into a substantially half-crank shape, and
The free end of the upright plate part 6b is integrally provided with a handhold part 6d which is curved inward and then curved upward, and is connected to the flat plate part 6a and the lower curved plate part 6c.
Window holes 6e and 6f are respectively formed in the flat plate portion 6a, and brackets 6g and 6g are integrally provided downwardly and oppositely from the left and right sides of the window hole 6e in the flat plate portion 6a.

The main body 6 has flat plate portions 6a on the upper surface and inner surface of the lower frame 4 of the flap door 1, respectively.
The lower curved plate part 6c is fixed to the lower frame 4 with screws 13 in such a state that they are overlapped, and as a result, the upright plate part 6b and the handle part 6d are on the inside of the cover door 1a of the flap door 1. It is arranged in an upright position, making it easy to open and close the door by holding the handle portion 6d from indoors.

Further, the push lever 7 is provided with an operating section 7a having a substantially U-shape in plan at its upper end by bending a metal plate or the like, and by extending the left and right side plate portions of the operating section 7a downward, the operating section 7a is formed by bending a metal plate or the like. The portions 7b, 7b are integrally provided opposite each other.

Further, at least the two actuating plate parts 7b, 7b of the push lever 7 are located in the window hole 6e of the main body 6, and are spaced apart from each other so that they can be fitted between the two brackets 6g, 6g.

Further, the hook plate 8 is formed by bending a metal plate or the like or by pressing, etc., so that the side surface is approximately inverted L-shaped, and the width in the left and right direction is such that it fits between the two operating plate portions 7b, 7b. Left and right engaging portions 8b, 8b formed to be inserted and connected at the top plate portion 8a;
A locking portion 8 extends downward continuously from both the engaging portions 8b, 8b, and is bent symmetrically outward at the tip thereof.
It is formed by locking plate portions 8c and 8c having locking plate portions d and 8d.

The push lever 7 and the hook plate 8 are inserted into the window hole 6e of the main body 6, and a pivot shaft 1 is inserted between the brackets 6g, 6g.
2, and the push plate 7 is rotatably mounted at the operating plate portions 7b and 7b.
7b, shaft holes 7c, 7c drilled near the bottom
On the other hand, the hook plate 8 is pivotally connected through shaft holes 8f, 8f bored in its bent portion 8e, and both engaging portions 8d, 8d are connected to both actuating plates of the push lever 7. By locking the parts 7b, 7b, they can move together.

Further, a torsion spring is used as the spring 9,
The pivot shaft 12 is sheathed, and one end thereof is attached to the main body 6.
By locking the other end to the hook plate 8, the spring 9 applies a rotational locking force to the hook plate 8 and the push lever 7 in the direction opposite to the arrow in FIG. Forced.

Here, the lower frame 4 includes each window hole 6 of the main body 6.
The push lever 7 and the hook plate 8 are inserted into the window hole 6e of the push lever 7 and the opening 4a, and are pivotally attached as described above. The lower half of the push lever 7 and the hook plate 8 are housed inside the lower frame 4, and the operating section 7a of the push lever 7 is projected upwardly outward from the opening 4a and the window hole 6e, and is connected to the handle section 6d of the main body 6. They are arranged to face each other.

The cover 11 is formed into a substantially triangular shape on the sides by a top wall 11a and left and right side walls 11b, and an engaging portion 11c is provided at the lower end of the top wall 11a. Walls 11b, 11
A locking piece 11 curves outward symmetrically from the front edge of b.
d and 11d.

Thus, the cover 11 is located between the two actuating plates 7b, 7b of the push lever 7, and fits into the window hole 6e of the main body 6 and the opening 4a of the lower frame 4.
By fitting the lower edges of the side walls 11b, 11b, the engaging portion 11c engages with the opening edge of the projection hole 6e, while the locking pieces 11d, 11d engage with the upright plate portion 6b of the main body 6.
By fitting and locking the inner surface, the window hole 6e
As a result, only the operation part 7a of the push lever 7, the upright plate part 6b and the handhold part 6b of the main body 6 protrude from the upper surface of the door lower frame 4, and all other parts are covered by the cover 11. It is covered and cannot be seen from the outside.

Moreover, the receiving metal fitting 10 is attached to the lower frame 5 of the window frame 2.
The mounting plate part 1 is fixed to the outer surface of the
0a, and an engagement plate part 10b that curves forward from the upper end of the mounting plate part 10a and has an engagement part 10c upright at the tip, and the engagement plate part 10b is formed integrally with the main body. It is possible to enter and exit the lower frame 4 through the window hole 6f of 6 and the opening 4a of the lower frame 4, and both the engaging parts 8b, 8b of the hook plate 8 can be freely engaged and detached from the engaging part 10c. is configured to be engaged with.

Also, both engaging portions 8b, 8 of the hook plate 8
b includes substantially vertical engaging surfaces 8b', 8b' that engage with the engaging portion 10c of the receiving fitting 10, and the engaging surfaces 8b', 8b'.
Guide surfaces 8b'', 8b'' are formed which slope or curve upward and upward from the descending end of 8b'.
0c, the hook plate 8 rotates against the spring force, thereby causing the locking surface 8 to rotate.
b', 8b' are guided to the engaging portion 10c so that they can be engaged.

In FIGS. 1 and 2, 15 and 15' indicate sliding doors that engage with the rails 16 and 16' of the window frame 2 and can be opened and closed, and 17 indicates the flap door 1.
The packing attached to the inner surface of the lower frame 4 is shown.

In the above configuration, since the push lever 7 and the hook plate 8 are biased clockwise in FIG. 1 by the spring 9, when the flap door 1 is closed, the window hole 6f of the main body 6 and the door lower frame 4 through the opening 4a of the window frame 2, the engagement plate portion 10b of the receiving metal fitting 10 fixed to the lower frame 5 of the window frame 2 protrudes into the lower frame 4. As a result, the flap door 1 is locked in the closed state shown in FIG. 1 and will not be opened involuntarily.

When the push lever 7 is rotated counterclockwise against the spring force with the door closed and locked as shown in FIG. Since it has been stopped,
The hook plate 8 is also rotated counterclockwise about the pivot 12, so that its engaging portions 8b, 8b engage with the engaging portion 10c of the receiving fitting 10.
As shown in FIG. 2, the lock is released.

Therefore, in this state, the flap door 1 can be opened by moving in the direction of arrow B in FIG.

Also, when rotating the push lever 7 as described above, the operating portion 7a and the hand grip portion 6d of the main body 6
For example, when the push lever 7 is pinched by placing the thumb and forefinger on the push lever 7, a reaction force can be applied to the finger hook 6d, so that the push lever 7 can be rotated easily.

After opening the door, when the rotational force of the push lever 7 is released, the push lever 7 and the hook plate 8 are rotated clockwise again by the spring 9, and the push lever 7 hits the opening edge of the window hole 6e of the main body 6 and is at a predetermined position. is held in

Therefore, when the flap door 1 is operated to close and comes just before closing, the guide surfaces 8 of the engaging portions 8b, 8b
b″, 8b″ butt against the engaging portion 10c of the receiving metal fitting 10, but since the guide surfaces 8b″, 8b″ are sloped or curved, the closing force resists the spring force and pushes the hook plate 8. In FIGS. 1 and 2, it acts as a rotational force in the counterclockwise direction, whereby the engaging portions 10c and 8b, 8b are engaged, and the door is locked.

Furthermore, when locking the closing door described above, the push lever 7 may be rotated and held in the above-mentioned unlocked state, and after the flap door 1 is closed, the rotational force of the push lever 7 may of course be released. be.

Further, the flap door 1 can be opened and closed by holding the handhold portion 6d.

[Effects of the Invention] Since the present invention is constructed as described above, the hook plate 8 that engages and disengages from the receiving metal fitting 10, the lower half of the push lever 7 that engages and rotates the hook plate 8, and A spring 9 that applies an engaging force to these is housed inside the lower frame 4 of the door 1 and is further covered with a cover 11. Outside the lower frame 4, there are only a few operating parts 7a of the push lever 7 and the main body 6. Only the handle portion 6d protrudes, and the receiving bracket 1
0 also engages with the hook plate 8 while protruding into the lower frame 4, and the locking mechanism part is not entirely exposed to the outside, so it has a good appearance, and the main body 6 The flap door 1 can be opened and closed by holding the hand grip 6d, and the lock can be released by pressing and rotating the push lever 7 in the opening direction of the door 1, making it easy to use. Since the hook plate 8 is not engaged by tightness but by a spring force, the push lever 7 can be easily rotated with a small force that resists the spring force, and the spring force is biased in the direction of engagement. This has practical effects such as maintaining the reliability of the door closing lock.

[Brief explanation of the drawing]

Figures 1 and 2 are longitudinal sectional side views showing the flap door locking device according to the present invention in a closed and unlocked state, respectively, Figure 3 is a perspective view of the locking device, and Figure 4 is a perspective view of the locking device. FIG. 5 is an exploded perspective view of the locking device, and FIG. 5 is a side view showing the state in which the flap door is attached. 1... Flap door, 2... Window frame, 4... Lower frame of flap door, 4a... Opening, 6... Main body, 6a
...Flat plate part, 6d...Handle part, 6e...Window hole, 6
g, 6g... Bracket, 7... Push lever, 7b, 7b... Operating plate portion, 8... Hook plate, 9... Spring, 10... Bracket, 11... Cover, 12... Pivot.

Claims (1)

[Scope of utility model registration request] The main body has an approximately half-crank shape on the side, and a handhold part is provided upright to be fixed in an overlapping state on the bottom frame of the flap door, and brackets are inserted from the left and right sides of the window hole made in the flat plate part, respectively. The lower frame is inserted into the opening of the lower frame, and the lower curve is installed in the lower frame,
An operating plate and a hook plate, which are hung from both left and right sides of the push lever on both brackets, are locked and rotatable so that they can move together with each other, and an engaging force is applied by a spring mounted on the pivot shaft. In addition to being biased and pivoted, the hook plate is fixed to the window frame and can be removably engaged with a receiving fitting that protrudes into the lower frame. is a locking device for a flap door that has a cover fitted so that it can be attached and detached at will.