JPH07113301B2 - Swing device for sliding window - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding link type swing device for a sliding window, which is provided with a tilt stop function.

[0002]

2. Description of the Related Art The basic form of a folding link type swing device is known, for example, from Japanese Utility Model Publication No. 2-9671. As shown in FIG. 4, this type of swing device includes a guide frame 3, a slider 10 guided by the guide frame 3, two long and short first shift links 5 and second shift links 6.
And the control link 7, the second shift link 6 and the control link 7 are connected to the slider 10 via the pins 16 and 18, and one end of the first shift link 5 is attached to the side end of the guide frame 3 by the pin 15 Supported by. 2 is a window.

The applicant of the present invention has previously proposed a swing device in which a swing stop mechanism is added to the above device so that the window 2 can be fixedly held at several open positions (Practical application No. 3-).
22894). In this case, the lock rod 21 that moves along with the slider 10 is arranged inside the guide frame 3, and the lock body 22 is engaged with several engagement recesses 26 provided in the lock rod 21 to move the slider 10. Prevent. Lock body 22
Is supported by the guide frame 3 so as to be retractable and retractable, and is urged to move toward the lock rod 21 by a spring (not shown).

[0004]

According to the improved swing device described above, the window 2 can be fixed at each opening angle of 30, 60, and 90 degrees, but there is a problem in operability. Since the lock body 22 is constantly urged to move toward the lock rod 21 by a spring, when the window 2 is closed, the lock body 22 is kept in the unlocked state by one hand, or the lock body 22 is locked. This is because it is necessary to perform the unlocking operation every time when the swells into the engaging recess 26 and is engaged, and the operation is troublesome and the closing operation must be performed in an unnatural posture.

For example, if the lock body 22 can be held at each of the locked position and the unlocked position,
The inconvenience in use as described above is eliminated. However, in this case, the automatic locking function of the lock body 22 at the time of opening the window 2 is lost, so that the opened window 2 may be suddenly fully opened by being exposed to the wind, which poses a safety problem. is there. In particular, the folding link type swing device
Since it is often applied to large and heavy windows, there is a risk of dragging the user out of the window 2 when exposed to the wind and creating a large force.

SUMMARY OF THE INVENTION An object of the present invention is to provide a high-performance swing device capable of easily closing a window while keeping the automatic lock function of a lock body, and achieving both safety and operability. Another object of the present invention is to obtain a swing device which can reduce the cost required for its manufacture by only partially changing the structure of the lock body or the holding spring.

[0007]

The present invention comprises at least 3
Each of the links 5, 6, and 7 has a guide frame 3, and a slider 10 supported by the guide frame 3, and the movement of the slider 10 is blocked inside the guide frame 3 to open a plurality of windows 2. In a folding link type swing device provided with a tilt stop mechanism for fixing at a position, the tilt stop mechanism has one end fixed to the slider 10 and a lock rod 21 having a plurality of engaging recesses 26 along its longitudinal direction. A lock body 22 supported by the guide frame 3 so as to be retractable and engageable with the engagement recess 26, an automatic locking spring 23 for urging the lock body 22 toward the lock rod 21, and a lock rod. 21 and a holding spring 25 protruding toward the lock body 22 side from the engagement opening surface of the engagement recess 26, and the engagement protrusion 27 of the lock body 22 fitted in the engagement recess 26. , Engagement recess 2 Of having a vertical thickness exceeding vertical size, in at least one of the engagement projection 27 and the holding spring 25, a first guide surface 33 to displace away the retaining spring 25 from the locking bar 21, locking member 22 springs 23
Second guide surface 3 for guiding movement in the unlocking direction against
4 and 4 are required. The holding spring 25 can be formed by a leaf spring or a wire spring.

[0008]

Operation Assuming that the holding spring 25 is not provided, the spring 2
In the lock body 22 that is urged to move by 3, the engagement protrusion 27 of the lock body 22 is infinitely dropped into the engagement recess 26 every time the engagement recess 26 faces the lock body 22. A holding spring 25 is provided to limit this drop. Then, in order to eliminate this depression limiting action only when the window is opened and to make it effective when the window is closed, the vertical thickness of the engaging projection 27 is set to be larger than the vertical dimension of the engaging recess 26, and the side edge of the holding spring 25 is set. Project toward the side of the lock body 22, and further the first and second guide surfaces 3
3.34 is provided. The first guide surface 33 is the holding spring 2
5 is mounted on, for example, the upper surface side of the engaging projection 27 to nullify the limiting action and guarantee automatic locking when the window is opened. The holding spring 25 receives the engaging projection 27 by the lateral projecting edge 25a and prevents the engaging projection 27 from falling into the engaging recess 26, but this falling limiting action is exerted only when the window is closed. A second guide surface 34 is provided in order to make the relative movement between the fitting protrusion 27 and the holding spring 25 smooth.

[0009]

According to the present invention, when the window 2 is tilted by the lock bar 21 having the plurality of engaging recesses 26 and the lock body 22 engaged therewith, the lock body 22 is engaged when the window is opened. The engaging recesses 26 are engaged with the engaging recesses 26 so that the locked state is automatically obtained, and when the windows are closed, all the engaging recesses 26 can pass through without engaging with the engaging projections 27. Therefore, the opened window 2 is prevented from being suddenly fully opened by being blown by the wind, and while maintaining the safety during use, the unlocking operation of the lock body 22 during the closing of the window is not required and can be easily performed. The window 2 can be closed and operated, and a high-performance swing device satisfying both safety and operability can be obtained.

A holding spring 25 that receives and maintains the unlocked engagement projection 27 is used, and a second guide surface 34 is provided on either the retention spring 25 or the engagement projection 27 to close the window. Since the engagement protrusion 27 is prevented from engaging with the engagement recess 26, the automatic locking function is activated when the window is closed by only partially changing the structure of at least one of the lock body 22 and the holding spring 25. This can be prevented, and the cost required for manufacturing this type of swing device can be reduced.

[0011]

1 to 7 show an embodiment of a swing device according to the present invention. In FIG. 4, reference numeral 1 is a window frame, and 2 is a window. Between the upper and lower frames of the window 2 and the upper and lower frames of the window frame 1, foldable link type swing devices are arranged,
With this device, the window 2 is openably and closably supported between a fully closed position and a fully open position. In the fully open position, the window 2 is in a position orthogonal to the window opening surface as indicated by a chain double-dashed line. Since the upper and lower swing devices are different from each other only in the mounting direction, only the lower swing device will be described.

The swing device is provided between the guide frame 3 which is screwed to the window frame 1 side, the mounting bracket 4 which is screwed to the window 2 and the guide frame 3 and the mounting bracket 4 so that the window 2 is fixed. First and second shift links 5 for sliding operation
.6, a control link 7 that regulates the maximum swing angle of these two links 5, 6, a slider 10 that moves left and right along the inner surface of the guide frame 3, and a tilt stop mechanism. The guide frame 3 is a press-molded product having a hat-shaped cross section that opens downward, and has a laterally long slide groove 9 on its upper wall.
A guide wall 12 is provided at the right end of the guide frame 3 so as to guide the claw portion 4a at one end of the mounting bracket 4 to a normal retracted position when the window 2 is closed.

The slider 10 and the claw portion 4a of the mounting bracket 4 are connected by a short second shift link 6, and the middle portion of the mounting bracket 4 and the left end portion of the guide frame 3 are moved by a long first shift. The window 2 is supported by connecting with the link 5. Window 2
When the opening operation is performed, the first shift link 5 has the pin 15
Is oscillated outward with the fulcrum as a fulcrum, and the window 2 is pushed outward. The second shift link 6 swings outward with the pin 16 as a fulcrum while sliding toward the first shift link 5 side, and the window 2 is watched around the connecting pin 17 of the mounting bracket 4 and the first shift link 5. Swing around.

The base end of the control link 7 is connected to the slider 10 via a pin 18 provided at a position different from the pin 16 for the second shift link 6. These pins 16 and 18 can move left and right along the slide groove 9. The free end of the control link 7 is connected to the middle portion of the first shift link 5.

In FIG. 1, the anti-rotation mechanism includes a lock rod 21 and a lock body 2 incorporated in the guide frame 3.
2, a compression coil type spring 23 for automatic locking, an operating tool 24 for operating the lock body 22, a holding spring 25 and the like. The lock rod 21 is formed of a metal rod having a square cross section, and has three engaging recesses 2 on one side surface along the longitudinal direction of the rod.
6 is provided, and one end thereof is screwed to the slider 10. As shown in FIG. 7, the lock body 22 is formed of a crank-shaped metal block in a side view, an engagement protrusion 27 that engages with the engagement recess 26 is provided on one side of the lock body 22, and a spring hole 28 is formed at the center of the lower surface of the metal block. To provide. The vertical thickness of the engagement projection 27 is set to be slightly larger than the vertical dimension of the engagement recess 26. In FIG. 3, the lock body 22 is incorporated into the opening 29 of the guide frame 3 from the inner surface side, and is moved toward the lock rod 21 by a spring 23 interposed between the spring hole 28 and the standing wall portion 3a on the indoor side. Energize. In order to unlock the lock body 22 against the spring 23, an operating tool 24 made of a plastic molded product is used.
Is provided on the outer surface of the guide frame 3 and is screwed to the lock body 22. The position of the lock body 22 is regulated by the guide blocks 30 provided on both sides of the lock body 22 (see FIG. 1).

The holding spring 25, which is a leaf spring, is provided to prevent the engagement projection 27 that was originally unlocked from falling into the engagement recess 26 again.
The screw 6 is fixed to the lock rod 21 with the upper surface of 6 being closed. In the mounted state, the side edge of the holding spring 25 is projected to the lock body 22 side from the engagement opening surface of the engagement recess 26, and the projecting edge 25a maintains the unlocked posture of the lock body 22. The holding spring 25 can be flexibly deformed upward with the fastening portion by the screw 32 as a base end, but it cannot be moved or deformed in the width direction.

As described above, the vertical thickness of the engaging projection 27 is larger than the thickness of the lock rod 21, and the upper surface of each engaging recess 26 is closed by the holding spring 25. Under this condition, the engagement protrusion 27 cannot basically fit into the engagement recess 26, but in order to apply the automatic lock function when the window is opened and prevent the automatic lock when the window is closed, the engagement protrusion 27 is 27 is provided with a first guide surface 33 and a second guide surface 34.

As shown in FIG. 7, the first guide surface 33 is an arc surface formed by rounding a corner of the upper surface of the engaging projection 27 on the slider 10 side, and the lower end of the arc surface is located lower than the lower surface of the holding spring 25. To be formed. That is, the first guide surface 33 facilitates the engagement projection 27 to slip into the holding spring 25, and avoids abutting interference between the engagement projection 27 and the holding spring 25 when the window is opened.

The second guide surface 34 is an arc surface formed by rounding the upper front surface of the engaging projection 27 adjacent to the first guide surface 33. The guide surface 34 holds the engagement protrusion 27 in the holding spring 25.
The relative movement is made along the protruding edge 25a, and the automatic lock function is prevented from working when the window is closed. The arcuate surfaces at both corners of the projecting edge 25a also serve to facilitate the relative movement.

Next, the operation of the tilt stop mechanism will be mainly described. In the state where the window 2 is completely closed, the links 5 to 7 are folded on the guide frame 3, and the engagement projection 27 is adjacent to the projecting end surface of the lock rod 21 and blocks the movement of the lock rod 21. There is. In this state, when the lock body 22 is pulled toward the indoor side against the spring 23, the window 2 can be opened and operated. When the lock body 22 is returned and moved with the biasing force of the spring 23 at the same time when the window 2 starts to open, the holding spring 25 is guided by the first guide surface 33 as shown in FIGS. Since the engaging recess 26 faces the engaging protrusion 27, they engage with each other and automatically lock. When the window 2 is to be fully opened, the lock body 22 is pulled again against the spring 23. The three engagement recesses 26 fix the window 2 at opening angles of 30, 60, and 90 degrees.

When the window 2 is closed, the lock body 22
Is pulled against the spring 23, and the protruding end of the engaging protrusion 27 is supported by the protruding edge 25 a of the holding spring 25. When the window 2 is closed in this state, the projecting edge 25a and the engaging projection 27 move relative to each other, and eventually the engaging projection 27 contacts the side surface of the lock rod 21. When the window 2 is subsequently closed, the protruding edge 25a of the holding spring 25 contacts the second guide surface 34 as shown in FIGS. 1 and 2, and the entire lock body 22 is pushed back against the spring 23 toward the inside of the room. . Therefore, each engaging recess 26 does not pass through the projecting end face side of the engaging projection 27 one by one until the window 2 is completely closed, and does not engage with the lock body 22 on the way.

In addition to the above-mentioned embodiments, the holding spring 25 can be formed by a wire spring or a plate spring made of plastic. The first guide surface 33 and the second guide surface 34 may be formed on the side of the holding spring 25, respectively, and may be formed as linear inclined surfaces instead of being arcuate surfaces. Lock stick 2
1 and the holding spring 25 can be arranged upside down.

[Brief description of drawings]

FIG. 1 is a plan view of the inside of a guide frame showing a tilt stop mechanism.

FIG. 2 is a sectional view taken along line AA in FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

FIG. 4 is an overall plan view of a swing device.

FIG. 5 is a plan view of the inside of the guide frame, showing an operating state of the tilt stop mechanism when the window is opened.

6 is a cross-sectional view taken along the line CC in FIG.

FIG. 7 is a perspective view showing a related structure of a lock body and a lock rod.

[Explanation of symbols]

 1 Window Frame 2 Window 3 Guide Frame 5 First Shift Link 6 Second Shift Link 7 Control Link 21 Lock Rod 22 Lock Body 23 Spring 25 Holding Spring 26 Engagement Recess 27 Engagement Protrusion 33 First Guide Surface 34 Second Guide Surface

Claims (1)

[Claims] 1. At least three links 5.6.7,
A guide frame 3 and a slider 10 supported by the guide frame 3 are provided. Inside the guide frame 3, there is provided a tilt stop mechanism that prevents the slider 10 from moving and fixes the window 2 at a plurality of open positions. The swinging device is a folding link type swing device in which the one end of the tilting mechanism is fixed to the slider 10, and the lock rod 21 having a plurality of engaging recesses 26 along its longitudinal direction and the guide frame 3 can be freely retracted. A lock body 22 that is supported by and engages with the engagement recess 26, a spring 23 for automatic locking that urges the lock body 22 toward the lock rod 21, and an engagement recess that is attached to the lock rod 21. And a holding spring 25 protruding from the engagement opening surface of the lock body 22 toward the lock body 22 side, and the engagement projection 27 of the lock body 22 fitted in the engagement recess 26.
Has a vertical thickness that exceeds the vertical dimension of the engaging recess 26, and at least one of the engaging projection 27 and the holding spring 25 displaces the holding spring 25 in the direction away from the lock rod 21, and A swing device for a sliding window provided with a second guide surface 34 that guides the lock body 22 to move in the unlocking direction against the spring 23.