JP2535044Y2 - Lock structure in casement window opening and closing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an opening / closing device for a casement window that opens and closes a sliding door by operating a handle, and more specifically, locks the sliding door in a predetermined open state to open the window. The present invention relates to a lock structure in an opening / closing device.

(Prior Art) A window opening / closing device that opens and closes a sash by operating a handle without touching the sash has been used for various types of sash windows.

FIG. 3 shows a plan view in which the opening / closing device is applied to a sliding window in which one vertical frame of the shoji is extended from the window opening surface to the outside of the room to open the shoji.

In FIG. 3, reference numeral 1 denotes a window frame which is fitted and fixed in a window opening, and the window frame 1 is composed of an upper and lower horizontal frame 1A and a left and right vertical frame 1B.

Reference numeral 3 denotes a shoji that is openable and closable on the outside of the window frame 1.
The shoji 3 is configured by a vertical horizontal frame 3A and a left and right vertical frame 3B framed and a glass plate (not shown) fitted between them.

A pair of upper and lower sliding mechanisms (not shown) are disposed between the window frame 1 and the shoji 3, and a window opening / closing device 5 is attached to the lower sliding mechanism.

The window opening / closing device 5 includes a handle 7 disposed on the indoor side of the lower horizontal frame 1 </ b> A of the window frame 1, a drive arm 9 swinging by rotation of the handle 7, and a drive arm 9 and the sliding door 3. A connection lever 11 and the like for connection are provided.

A bracket 13 is disposed on the indoor side of the lower horizontal frame 1A of the window frame 1, and the handle 7 and the worm 15 which is rotated by rotating the handle 7 are supported by the bracket 13, and the drive arm 9 is connected to the bracket 13 by the bracket 13. And is supported via a support shaft 17.

A worm wheel 19 that meshes with the worm 15 is formed on the outer peripheral portion of the base 9A of the drive arm 9, and the drive arm 9 swings by rotation of the handle 7, and the shoji 3 is opened and closed.

(Problems to be solved by the invention) With such a case opening / closing device, it is possible to fully close and fully open the shoji, and from the viewpoint of safety and security, the shoji is locked in a predetermined open state. In such a state, it is desirable that the handle cannot be further turned in the direction to open the sash, and that the sash cannot be further opened from outside.

The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a lock structure of a simple window opening / closing device that can lock a sash in a predetermined open state.

(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be described with reference to FIG.

According to the present invention, a pin 23 is provided on the base 9A of the drive arm 9 and a stopper 25 is provided which engages with the pin 23 and restricts the movement of the sash 3 in the opening direction. Only when 9 is in the fully closed position, the stopper 25
It can move between on and off the trajectory of 23, and the stopper 25
When the drive arm 9 is swung in a state where is positioned on the trajectory of the pin 23, the stopper 25 and the pin 23 are configured to engage with each other, and the base 23A of the drive arm 9 is mounted on the base 9A. A plurality of holes 27 are formed at intervals in the swinging direction of the drive arm 9.

(Operation) A stopper is provided at a position where it is engaged with the projection 23 when the shoji 3 is fully closed.
When 25 is switched, the locked state of the shoji 3 is formed by operating the handle 7 in the opening direction of the shoji 3.

In order to release the locked state, after the sliding door 3 is fully closed and the stopper 25 is switched to a position where it comes off the projection 23, the locked state is released.

The stopper 25 can be swingably provided or slidably provided as shown in FIG. 2. When slidably provided, the lock structure can be made compact without taking up space.

If the protrusions 23 are formed by pins and a plurality of mounting holes 27 for the pins are formed in the base 9A of the drive arm 9 at intervals in the swinging direction of the drive arm 9, the sash to be locked can be obtained. 3 can be adjusted.

(Embodiment) Hereinafter, a case where an embodiment of the present invention is applied to a sliding window opening / closing device shown in FIG. 3 will be described.

FIG. 1 is a sectional plan view of a main part of a lock structure portion according to a first embodiment.

The lock structure 21 according to the present invention includes a pin 23 attached to the base 9A of the drive arm 9 and an arm 25 supported by the bracket 13. In this embodiment, the pin 23 corresponds to a projection, and the arm 25 corresponds to a stopper.

The pin 23 is formed in the base 9A of the drive arm 9 and has a mounting hole 27
And is arranged so as to be fitted and fixed.

The arm 25 has a shaft 29 fixed to its middle
An operation arm 31 for pivoting the arm 25 is attached to the shaft 29, and the operation arm 31 is
Exposed outside of 13.

The arm 25 swings around the axis 29 as a fulcrum, and at the position of the operation arm 31 indicated by a virtual line (a) in FIG. With the predetermined angle open, one side 25A engages with the pin 23, and the other side 25B engages with the contact portion 13A of the bracket 13, so that the handle 7 can be turned in a direction to open the sash 3 further. In addition, a locked state is formed in which the sash 3 cannot be further opened from the outside.

In addition, at the position of the operation arm 31 indicated by the virtual line (b), one side 25A of the arm 25 deviates from the locus of the pin 23, and the operation of the handle 7 allows the drive arm 9 to swing freely,
The shoji 3 is fully opened and fully closed.

The swing of the arm 25 to the position where the arm 25 is engaged with the pin 23 to form the locked state and the swing for releasing the arm 25 are not performed in contact with the pin 23 except in the fully closed state of the shoji 3. The position of the drive arm 9 in the fully closed state of the sash 3 is indicated by an imaginary line (c).
Is indicated by a virtual line (d).

Next, a second embodiment will be described with reference to FIG.

FIG. 2 is a plan view, partly in section, of a lock structure according to a second embodiment.

The second embodiment differs from the first embodiment in that a stopper 35 for engaging and disengaging the pin 23 is slidably provided.

The stopper 35 includes a shaft portion 35A, and an engaging portion 35B which is bent at the tip of the shaft portion 35A and can be engaged with the pin 23.

The stopper 35 has a shaft 35A slidably supported by a bearing 13B of the bracket 13, and a bracket 1 on the base end side of the shaft 35A.
A collar 35C that can be locked is attached to the outer surface of 3.

The stopper 35 is mounted on a bracket as shown in practice in FIG.
13, the engaging portion 35B is located on the locus of the pin 23, and the engaging portion 35 is engaged with the pin 23 in a state where the shoji 3 is opened at a predetermined angle, and the shoji 3 is further opened. In such a state, the handle 7 cannot be turned in the direction in which the sash 3 cannot be opened from outside.

Further, as shown by an imaginary line (e), at the position where it is pulled out from the bracket 13, the engaging portion 35 B is displaced from the locus of the pin 23, and the operation of the handle 7 allows the drive arm 9 to swing freely, and Is fully opened and fully closed.

The slide of the stopper 35 to the position where it is engaged with the pin 23 to form the locked state and the slide for releasing the stopper 35 are not brought into contact with the pin 23 in a state other than the fully closed state of the shoji 3, It can be performed only at the swinging position of the drive arm 9 that fully closes the shoji 3, and the phantom line (f) indicates the position of the pin 23 when the shoji 3 is fully closed.

In the first and second embodiments, the mounting hole 27 of the pin 23 is used.
If a plurality of are provided on the base 9A of the drive arm 9 at intervals in the swinging direction of the drive arm 9, it is convenient for fine adjustment at the time of assembly and on-site, and the opening of the locked sash 3 The state can be easily changed according to the request of the customer.

In the embodiment, the case where the present invention is applied to the sliding window has been described. However, the present invention is of course applicable to other various types of casement windows.

(Effects of the Invention) As is clear from the above description, according to the present invention, in a case of a casement window opening / closing device that opens and closes a sash by operating a handle without touching the sash, the sash is brought into a predetermined open state by a simple structure. A lock structure that can be locked and that can adjust the open state of the sash to be locked is obtained.

[Brief description of the drawings]

1 is a cross-sectional plan view of a main part of a lock structure according to a first embodiment, FIG. 2 is a cross-sectional plan view of a main part of a lock structure according to a second embodiment, and FIG. 3 is a cross-sectional plan view of a sliding window. is there. In the drawing, 1 is a window frame, 3 is a shoji, 5 is an opening and closing mechanism, 7 is a handle, 9 is a driving arm, 13 is a bracket, 15 is a worm, 19 is a worm wheel, 23 is a pin, 25 is an arm, 35
Is a stopper.

Claims (3)

(57) [Scope of request for utility model registration] 1. A handle attached to a window frame side, a worm gear which is rotated by rotating the handle, and a swing arm attached to the window frame side and connected to the shoji side to swing the shoji. A drive arm to be opened and closed; and a worm wheel provided at a base of the drive arm, which meshes with the worm gear and swings the drive arm by rotation of the worm gear. A stopper is provided to limit the movement of the sash in the opening direction by engaging with the pin. The stopper and the pin move only when the drive arm is at the fully closed position. When the drive arm is swung while the stopper is positioned on the trajectory of the pin, the stopper and the pin are engaged. A lock structure in the case of a casement window opening and closing device, wherein a plurality of mounting holes for the pins are formed at the base of the drive arm at intervals in the swinging direction of the drive arm. 2. A lock structure for a casement window opening and closing device according to claim 1, wherein said stopper moves between on and off the trajectory of the pin by swinging. 3. The lock structure for a casement window opening and closing device according to claim 1, wherein the stopper slides to move between on and off the trajectory of the pin by sliding.