JPH069275Y2 - Window switch - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a window switch. More specifically, the present invention relates to a switch used in a window of a type in which the upper casing of the window is attached to the upper frame of the window frame by a hinge and the window is opened by rotating it upward (hereinafter, referred to as an upper opening window).

As the above-mentioned type of window, for example, skylights, rails, smoke exhaust windows,
There is a ventilation window.

[Prior Art] For example, Japanese Utility Model Laid-Open No. 61-32370 discloses a technique of supporting an upper opening window even at an intermediate opening. This is because the base end of the ratchet pawl is supported by the sheath body so as to be able to move up and down, and the tip end is engaged and non-engaged with the gear portion by changing the relative position between the center line of the tension spring and the rotating shaft. It is designed to be held in the engaged state.

However, since the tension spring is directly hooked to the tip of the ratchet pawl, there remains a problem that the holding of the ratchet pawl in the engaged and non-engaged states is unstable.

[Problems to be Solved by the Invention] In view of such circumstances, the present invention makes it possible to stably and reliably hold the ratchet pawls in the engaged and disengaged states, and to support the window even in a partially opened position. The purpose is to provide a switch.

[Means for Solving the Problems] The invention of the present application is: (a) a window switch in which a window is rotatably attached to an upper frame of a window frame by a hinge, (b) an outer cylinder, and (c) the above An insertion member slidably accommodated in the outer cylinder, (d) ratchet teeth formed on the outer cylinder, and (e) rotatably attached to the inner insertion member, and , A ratchet pawl that rides over the ratchet tooth in the extension direction and is hooked on the ratchet tooth in the contraction direction, and (f) its abutting portion urges the ratchet pawl in the engaging direction with respect to the ratchet tooth, and (G) a first cam formed on the tip of the outer cylinder for forcibly rotating the ratchet pawl to the non-engagement position; and (h) a base of the outer cylinder. And a second cam forcibly rotating the ratchet pawl to the engagement position, the second cam being formed at the end of the ratchet pawl. Rotating the rear end of the ratchet pawl is characterized by comprising configured to be beyond the abutment of the resilient means that.

[Operation] When the window is rotated upward, the ratchet pawl of the switch moves over the ratchet teeth and moves, so that the window can be opened and closed freely. If you stop the rotation operation with the window partially open,
Although the weight of the window acts in the direction of contracting the switch, the ratchet pawl engages the ratchet teeth, so the switch is not contracted and the window is held halfway open.

When the window is opened to the maximum extent, the first cam rotates the ratchet pawl to the non-engaging position so that the rear end of the ratchet pawl rides over the contact portion of the elastic means, and the ratchet pawl is ejected to that position. Since it is held by means, the window closing operation after the window is fully opened, that is, the opening / closing of the switch can be freely performed. When the window is completely closed by the closing operation, the second cam forcibly rotates the ratchet pawl from the non-engaging position to the engaging position so that the rear end of the ratchet pawl rides over the abutting portion of the elastic means, and the position is maintained. When the window is opened again, the ratchet claw engages with the ratchet teeth, so that the window can be supported at the halfway window opening position.

[Embodiment] Next, an embodiment of the present invention will be described.

1 is an exploded perspective view of a switch according to an embodiment of the present invention, FIG. 2 is a partially sectional plan view of the switch shown in FIG. 1 in an assembled state, and FIGS. FIG. 7 is a plan view showing the operation of the switch, FIG. 7 is an enlarged view of a main part of the switch in the most extended state, and FIGS. 8 to 11 are explanatory views of a state in which the switch is attached to the window.

First, a window to which the switch of the present invention is applied will be described with reference to FIG.

(1) is a window, which has an upper shaft (2), a lower shaft (3) and a vertical shaft (4).
The upper shaft (2) of the window (1) is attached to the upper frame (7) of the window frame (6) by the hinge (5), and the window (1) is directed toward the window frame (6) by the arrow (A). Rotate in the direction. The switch (10) of the present invention is mounted between the vertical frame (8) of the window frame (6) and the vertical shaft (4) of the window (1). In the illustrated example, the outer cylinder (11) is attached to the window frame (6) side and the insertion member (12) is attached to the window (1) side, but as shown in FIG. window
The interior member (12) may be attached to the window frame (6) side on the (1) side.
Further, as shown in FIGS. 10 to 11, they may be mounted so that the mounting position on the window frame (6) side is high and the mounting position on the window (1) side is low.

Next, the structure of the switch (10) will be described with reference to FIGS.

The outer cylinder (11) is a long member having a C-shaped cross section, and comprises a bottom portion (13), two side walls (14) and two side edges (15). One side edge (1
Ratchet teeth (16) are formed in 5) along the longitudinal direction. The leading edge of this continuous ratchet tooth (16) is the first cam (18).

A hole (17) for attaching the attachment fitting (21) is formed at the base end of the outer cylinder (11). The mounting bracket (21) is attached to the plate (2
2) and the shaft (23), and the shaft (23) passed through the hole (17) has a washer (24), a hole (25a) for the second cam (25), and a hole (26 for the cover (26).
The C-shaped clip (27) is stopped through a). The second cam (25) has an inclined cam surface (25b).

At the tip of the outer cylinder (11), a sliding member (31) made of synthetic resin is provided on the inner circumference.
Is fitted. The sliding member (31) is a member having a U-shaped cross section and contacts the outer surface of the insertion member (12). A cushion member (32) is fitted between the two side edges (15) at the tip. This cushion member (32) is a square piece made of soft synthetic resin and has a long hole in the center for easy deformation.
(33) is formed.

The insertion member (12) is a long plate-shaped member. At its base end, a sliding member (34) made of synthetic resin and having a C-shaped cross section is fixed. At the proximal end of the insertion member (12), the ratchet pawl (35)
Is rotatably mounted on the shaft (36). The ratchet pawl (35) is integrally formed with a pawl portion (39) and a cam follower (37) at its front end and a triangular protrusion (38) at its rear end. Around the triangular protrusion (38), a leaf spring (41) as a resilient means is inserted by the rivet (42) into the insertion member (1).
It is stuck to 2). The leaf spring (41) has a curved portion (43) formed in an arc shape and an abutting portion (44) bent outward at its tip. Further, the contact portion (44) is arranged at a position between the engagement position and the non-engagement position with respect to the protrusion (38) of the ratchet pawl (35).

A projection (45) is formed integrally with the insertion member (12) at a position slightly closer to the tip end than the leaf spring (41). A hole (47) is formed at the tip of the insertion member (12) so that the shaft (53) of the fitting (51) can be passed through. (52) is plate, (54) is C
It is a shape clip.

Next, the operation when the above-mentioned switch (10) is attached as shown in FIG. 8 will be described.

As shown in FIG. 2, the switch when the window (1) is closed has the insertion member (12) housed in the outer cylinder (11).
It is in the most reduced state.

The state in which the window (1) is being opened is shown in FIG. At this time, the pawl portion (39) of the ratchet pawl (35) rides over the ratchet teeth (16) and moves in the extension direction. That is,
The triangular protrusion (38) of the ratchet pawl (35) is curved in the leaf spring (41).
As it is pushed by (43), the claw (39) is ratchet tooth (16).
It does not come off. Therefore, even if the window opening operation of the window (1) is stopped, the claw portion (39) engages with the ratchet teeth (16) and the window (1) is held so as not to be closed without permission.

When the window (1) is opened to the maximum, the protrusion (45) on the insertion member (12) hits the cushion member (32) at the tip of the outer cylinder (11), and the extension operation is stopped. In this state, the ratchet pawls (35) are hooked by the teeth at the tips of the ratchet teeth (16), so that the window (1) is still kept open without being closed.

In order to close the window (1) from the completely opened state, the window (1) is further pushed upward in the opening direction from the above state. Then,
As shown in FIG. 7, the protrusion (45) has a cushion member (32).
While deforming, move ratchet claw (35) slightly in the extension direction. Then, the first cam (18) forcibly pushes and moves the claw portion (39) from the engaged position to the non-engaged position, and finally the triangular protrusion (38) passes over the tip of the bending portion (43) and hits. Contact
It is pushed out of (44). As a result, the ratchet pawl is held at the non-engagement position. This state is shown in FIG. As shown in the figure, in this state, the ratchet pawl (35) is in the non-engaging position by the contact portion (44) of the leaf spring (41), that is, the pawl portion (39) cannot engage with the ratchet teeth (16). Held in position.

Therefore, when you let go of the window (1) or pull down the window (1) gently, the ratchet pawl (35) will engage the ratchet teeth (16).
The window (1) can be freely closed, since it does not engage with (see FIG. 5) at all.

Then, when the window (1) is almost closed, the cam follower (37) contacts the second cam (25) and forcibly pushes the claw portion (39) to the engagement position. It returns to the state (see FIG. 2).

It should be noted that the switch (10) of the present invention operates similarly to open and close the window (1) even in the mounted state shown in FIGS. 9 to 11.

[Advantage of Invention] According to the present invention, with the upper-opening window partially open,
It can be held stably so as not to close.

[Brief description of drawings]

1 is an exploded perspective view of a switch according to an embodiment of the present invention, FIG. 2 is a partially sectional plan view of the switch shown in FIG. 1 in an assembled state, and FIGS. FIG. 7 is a plan view showing the operation of the switch, FIG. 7 is an enlarged view of a main part of the switch in the most extended state, and FIGS. 8 to 11 are explanatory views of a state in which the switch is attached to the window. (Main symbols in the drawing) (10): Switch (11): Outer cylinder (12): Inner insertion member (16): Ratchet teeth (18): 1st cam (25): 2nd cam (35): Ratchet Claw (37): Cam follower (39): Claw (41): Leaf spring (43): Curved part (44): Contact part

Claims (1)

[Scope of utility model registration request] 1. A window switch in which (a) a window is rotatably attached to an upper frame of a window frame by a hinge, wherein (b) an outer cylinder and (c) a slidable inside the outer cylinder. The inserted insertion member, (d) ratchet teeth formed on the outer cylinder, and (e) rotatably attached to the insertion member, the ratchet teeth are extended in the extension direction during the extension operation of the insertion member. For overcoming and reducing the ratchet pawl in the shrinking direction, and (f) the abutting part of the ratchet pawl to urge the ratchet pawl in the engaging direction with respect to the ratchet tooth and to hold it in the non-engaging position. (G) a first cam forcibly rotating the ratchet pawl to a non-engaging position formed at the tip of the outer cylinder; and (h) a ratchet formed at the base end of the outer cylinder. A second cam forcibly rotating the pawl to the engaging position, and the ratchet is rotated by the rotation of the first cam and the second cam. Switchgear constructed comprising a window as the rear end of the can over the contact portion of the resilient means.