JP2000064693A - Opening/closing apparatus for window or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an opening/closing apparatus for a window or the like, improving the durability of spring means for energizing and holding a ratchet claw. SOLUTION: This opening/closing apparatus for a window or the like is composed of an outer cylinder 1; an internal insert member 2 slidably accommodated in the outer cylinder 1; ratchet teeth 3 formed at the outer cylinder 1; a ratchet claw 4 rotatably fitted to the internal insert member 2; a spring means 5 fitted to the internal insert member 2 to impart energizing force to the ratchet claw 4; a first cam 6 formed at the tip of the outer cylinder 1 to forcibly rotate the ratchet claw 4 into a nonengaging position; and a second cam 7 formed at the base end of the outer cylinder 1 to forcibly rotate the ratchet claw 4 into an engaging position. The spring means 5 comprises a steel ball 28 touching the ratchet claw 4, and a compression coil spring 29 for energizing the steel ball 28 in a direction of being pressed to the side face of the ratchet claw 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a switch such as a window used for adjusting the opening of a window or a door. More specifically, in particular, a switch suitable for use 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 rotated upward to open (hereinafter referred to as an upper opening window). There
In particular, it relates to a switch in which the durability of the elastic means for urging and holding the ratchet pawl is improved.

As the above-mentioned type of window, there are, for example, a skylight, a transom, a smoke exhaust window, and a ventilation window.

[0003]

2. Description of the Related Art Upward-opening windows have conventionally been provided with stays that support the windows so that they do not close when they are fully opened, but they also have the function of supporting the windows even when they are partially opened. The vessel never existed.

Therefore, in order to solve such a problem, the applicant of the present application has applied for utility model registration No. 120689 in 1988.
In this issue, we proposed a switch with an opening adjustment function that can support the window even when it is open halfway.

As shown in FIGS. 7 to 8, the switch having the opening degree adjusting function includes an outer cylinder 51, an insertion member 52 slidably accommodated in the outer cylinder 51, and an outer cylinder. Ratchet teeth 53 formed on 51, a ratchet pawl 54 rotatably mounted on the inner insertion member 52, an elastic means 55 mounted on the inner insertion member 52 for applying a biasing force to the ratchet pawl 54, and an outer cylinder. Ratchet pawl 5 formed at the tip of 51
It is composed of a first cam 56 forcibly rotating 4 to the disengagement position and a second cam 57 formed at the base end of the outer cylinder 51 forcibly rotating the ratchet pawl 54 to the engagement position.

The elastic means 55 is composed of a leaf spring and is fixed to the insertion member 52 with a rivet 58. The elastic means 55 composed of a leaf spring has a curved portion 55a formed in an arc shape.
And an abutting portion 55b bent outward at its tip.

The switches shown in FIGS. 7 to 8 are applied to the windows shown in FIGS. 9 to 12, for example. In FIGS. 9 to 12, reference numeral 61 denotes a window, which has an upper blade 62, a lower blade 63, and a vertical blade 64. The upper shaft 62 of the window 61 is attached to the upper frame 67 of the window frame 66 by the hinge 65, and the window 61 rotates in the arrow A direction with respect to the window frame 66. Reference numeral 70 denotes a switch shown in FIGS. 7 to 8, which is mounted between the vertical frame 68 of the window frame 66 and the vertical shaft 64 of the window 61. In FIG. 9, the outer cylinder 51 is attached to the window frame 66 side and the inner insertion member 52 is attached to the window 61 side, but as shown in FIG. 10, the outer cylinder 51 is attached to the window 61 side and the inner insertion member 52 is attached to the window 61 side. It may be attached to the frame 66 side. further,
As shown in FIGS. 11 to 12, the mounting position on the window frame 66 side may be set higher and the mounting position on the window 61 side may be set lower.

In FIG. 9, a mounting bracket 71 rotatably mounted on the outer cylinder 51 is fixed to a vertical frame 68, and a mounting bracket 72 rotatably mounted on the insertion member 52 is a vertical shaft 6.
It is fixed to 4.

A switch 70 mounted as shown in FIG.
In the middle of opening the window 61, the ratchet pawl 54 shown in FIG. 7 meshes with the ratchet teeth 53. At this time, the triangular projection 73 of the ratchet pawl 54 is contacted with the contact portion 5 of the elastic means 55.
Since the ratchet pawl 54 is urged in the engagement direction (counterclockwise direction in FIG. 7) by the ratchet teeth 5b,
There is no deviation from 3. Therefore, even if the opening operation of the window 61 is stopped, the ratchet pawl 54 still has the ratchet teeth 5
3, the window 61 is held so as not to be closed.

When the window 61 is closed, by pushing the window 61 further from the fully open position, the ratchet pawl 54 is disengaged by the first cam 56 as shown in FIG. 8 (clockwise in FIG. 8). ), The triangular projection 73 is pushed out to the outside of the contact portion 55b (right side in FIG. 8), and the ratchet pawl 54 moves to the ratchet tooth 5.
3 is held in a disengaged position that does not engage with 3. After that, the window 61 can be freely closed without being locked by the ratchet pawl 54.

When the window 61 is completely closed, the ratchet pawl 54 is moved in the engaging direction (counterclockwise in FIG. 7) by the second cam 57, as shown in FIG. 73 is moved to the inside of the contact portion 55b (left side in FIG. 7), and the ratchet pawl 54 is returned to the position where it engages with the ratchet teeth 53.

[0012]

However, since the switch shown in FIGS. 7 to 8 adopts the leaf spring as the elastic means 55, it is easily deformed, fatigued or worn. There is. Therefore, the desired biasing force and holding force are not applied to the ratchet pawl 54, which may cause malfunction.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a window switch etc. in which the durability of the elastic means for urging and holding the ratchet pawl is improved. And

[0014]

A switch for windows and the like according to the present invention comprises:
(A) A window switch in which a window or the like is rotatably attached to a frame of the window or the like by a hinge, wherein (b) an outer cylinder and (c) an inner sleeve slidably accommodated in the outer cylinder. The insertion member, (d) the ratchet teeth formed on the outer cylinder, and (e) rotatably attached to the insertion member, and during the extension operation of the insertion member,
A ratchet pawl that rides over the ratchet tooth in the extension direction and a ratchet pawl that engages with 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 An elastic means for holding the engaging position, (g) a first cam formed on the tip of the outer cylinder for forcibly rotating the ratchet claw to the non-engaging position, and (h) a base end of the outer cylinder. A second cam forcibly rotating the ratchet pawl to an engaging position, the rear end of the ratchet pawl being brought into contact with the abutting portion of the elastic means by the rotation of the first cam and the second cam. And a compression coil spring for urging the steel ball, which is the abutting portion, in a direction to press the steel ball to the side surface of the ratchet pawl. To do.

Further, it is preferable to have a holder for accommodating the steel ball and the compression coil spring, and the holder is fixed to the insertion member.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Next, a switch for windows and the like of the present invention will be described in detail with reference to the drawings. FIG. 1 is an exploded perspective view of an embodiment of a switch for windows and the like according to the present invention, and FIG.
FIG. 3 is a partial partial cross-sectional plan view of the switch and FIG. 3 to FIG. 6 are operation explanatory views showing the operation of the switch of FIG.

The switch shown in FIG. 1 differs from the conventional switch shown in FIGS. 7 to 8 in that the elastic means 5 employs a steel ball 28 and a compression coil spring 29 instead of a leaf spring. It is very different, and the configuration is almost the same in other points.

That is, the switch shown in FIG. 1 has an outer cylinder 1 and an insertion member 2 slidably accommodated in the outer cylinder 1.
Ratchet teeth 3 formed on the outer cylinder 1, and the insertion member 2
Ratchet pawl 4 rotatably attached to the insert member 2, elastic means 5 attached to the insertion member 2 for applying a biasing force to the ratchet pawl 4, and formed at the tip of the outer cylinder 1 to disengage the ratchet pawl 4 The first cam 6 forcibly rotated to the position and the outer cylinder 1
And a second cam 7 which is formed at the base end of the ratchet and forcibly rotates the ratchet pawl 4 to the engagement position.

The switch shown in FIG. 1 is the same as that shown in FIGS.
Like the switch shown in FIG. 9, the switch is used by being attached to the window 61 and the window frame 66 as shown in FIGS.

The outer cylinder 1 is a long member having a C-shaped cross section, and comprises a bottom portion 8, two side walls 9 and two side edges 10. Ratchet teeth 3 are formed on one side edge 10 along the longitudinal direction. The leading edge of the continuous ratchet teeth 3 is the first cam 6.

A hole 1a for mounting the fitting 11 is formed in the base end of the outer cylinder 1. The mounting bracket 11 includes a plate 12 and a shaft 13, and the shaft 1 is passed through the hole 1a.
3, a washer 14, a hole 7a of the second cam 7, a cover 15
The C-shaped clip 16 is stopped through the hole 15a. The second cam 7 has a cam surface 7b formed on an inclined surface.

A sliding member 17 made of synthetic resin is fitted on the inner periphery of the tip of the outer cylinder 1. The sliding member 17 is a member having a U-shaped cross section and contacts the outer surface of the insertion member 2.

The insertion member 2 is a long plate-shaped member. A sliding member 18 made of synthetic resin and having a C-shaped cross section is fixed to the base end thereof. A ratchet pawl 4 is rotatably attached to a shaft 19 at the base end of the insertion member 2. The ratchet pawl 4 is integrally formed with a pawl portion 20, a cam follower 21, and a triangular projection 22, for example. A hole 23 is formed at the tip of the insertion member 2 so that the shaft 25 of the mounting member 24 can pass therethrough. 26 is a plate and 27 is a C-shaped clip.

Further, the plate-shaped insertion member 2 is provided with reinforcing ridges 34 along the longitudinal direction.

The elastic means 5 includes a steel ball 28 which is an abutting portion,
It is composed of a compression coil spring 29 for urging the steel ball 28 in a direction of pressing it against the side surface of the ratchet pawl 4.
Therefore, as compared with the case where a leaf spring is used as the elastic means like the conventional switch, there is no fear of deformation, fatigue and wear, and the durability can be greatly improved.

Further, the switch shown in FIGS. 1 and 2 has a holder 30 for accommodating the steel ball 28 and the compression coil spring 29. The holder 30 is fixed to the insertion member 2 with a rivet 31. Holder 30
Inside, the compression coil spring 29 is stored in a compressed state,
By protruding a part of the steel ball 28 from the holder 30,
It is pressed by the ratchet claw 4. Therefore, the holder 3
0 accurately guides the steel ball 28 and the compression coil spring 29 in a predetermined direction.
There is no need to worry about slipping or falling off.

Next, the operation when the switch of the present embodiment shown in FIGS. 1 and 2 is attached as shown in FIG. 9 will be described.

As shown in FIG. 2, the switch when the window 61 is closed has the insertion member 2 housed in the outer cylinder 1 and is in the most reduced state.

The state in which the window 61 is opened is shown in FIG.
Is shown in. At this time, the claw portion 20 of the ratchet claw 4
Moves over the ratchet teeth 3 and moves in the extension direction. That is, since the triangular projection 22 of the ratchet pawl 4 is pushed by the steel ball 28 urged by the compression coil spring 29, the pawl portion 20 does not come off from the ratchet tooth 3. Therefore, even if the window opening operation is stopped for the window 61,
The claw portion 20 is hooked on the ratchet teeth 3 and the window 61 is held so as not to be closed by itself.

Therefore, in the switch according to the present embodiment, when the ratchet pawl 4 tries to come off the ratchet teeth 3 due to vibration or the like, the amount of bending of the elastic means 5 (that is, the compression coil spring 29 of the compression coil spring 29) becomes larger as the ratchet pawl 4 moves away from the ratchet teeth 3. By increasing the contraction amount, the urging force in the engagement direction with respect to the ratchet pawl 4 also increases. Therefore, during the extension operation, the ratchet pawl 4 can be reliably held in the engagement position against external force such as vibration.

To close the window 61, the window 61 may be opened to the maximum once. At this time, as shown in FIG.
The projection 32 formed near the ratchet pawl 4 of the insertion member 2 hits the projection 33 formed near the tip of the outer cylinder 1,
The extension operation is stopped. At that time, the first cam 6 makes the claw portion 2
0 is forcibly pushed in the disengagement direction, and finally the triangular projection 22 gets over the steel ball 28 and is pushed out to the outside of the steel ball 28 (right side in the drawing). In this state, the ratchet pawl 4 is held by the steel ball 28 in a non-engaging position, that is, a position where the pawl portion 20 cannot engage with the ratchet teeth 3.

Accordingly, when the hand is released from the window 61,
Alternatively, when the window 61 is pulled down lightly, the ratchet pawl 4 does not engage with the ratchet teeth 3 at all (see FIG. 5), so that the window 61 can be freely closed.

Even when the ratchet pawl 4 is in the non-engagement position, the elastic means for returning the ratchet pawl 4 to the non-engagement position as it moves in the direction away from the non-engagement position similarly to the above. The biasing force of 5 (that is, the compression coil spring 29) increases, and the ratchet pawl 4 can be stably held at the non-engagement position.

When the window 61 is almost closed, the cam follower 21 abuts the second cam 7 to forcefully push the pawl portion 20 to the engaging position, as shown in FIG. Therefore, it returns to the original state (see FIG. 2).

The switch according to the present embodiment is the same as that shown in FIG.
Even in the attached state of ~ 12, the window 6 operates in the same manner.
1 can be opened / closed and held.

[0036]

According to the present invention, by adopting the elastic means composed of a steel ball and a compression coil spring, there is no fear of deformation, fatigue and wear as compared with the conventional elastic means composed of a leaf spring. , The durability can be greatly improved.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of an embodiment of a window switch according to the present invention.

FIG. 2 is a partial partial cross-sectional plan view of the switch of FIG.

3 is an operation explanatory view showing an operation of the switch of FIG. 1. FIG.

4 is an operation explanatory view showing an operation of the switch of FIG. 1. FIG.

5 is an operation explanatory view showing an operation of the switch of FIG. 1. FIG.

6 is an operation explanatory view showing an operation of the switch of FIG. 1. FIG.

FIG. 7 is a partial partial cross-sectional plan view of a conventional switch.

FIG. 8 is a plan view showing the operation of the switch of FIG.

9 is a sectional view of the switch of FIG. 7 attached to a window.

10 is a sectional view of the switch of FIG. 7 attached to a window.

11 is a sectional view of the switch of FIG. 7 attached to a window.

12 is a sectional view of the switch of FIG. 7 attached to a window.

[Explanation of symbols]

1 outer cylinder 2 Insertion member 3 ratchet teeth 4 ratchet claws 5 explosive means 6 first cam 7 second cam 28 steel balls 29 Compression coil spring

Claims (2)

[Claims] 1. A switch for a window or the like in which (a) a window or the like is rotatably attached to a frame of the window or the like by a hinge, wherein (b) an outer cylinder and (c) a slidable inside the outer cylinder. (D) ratchet teeth formed on the outer cylinder, and (e)
It is rotatably attached to the insertion member, and when the insertion member is extended, it passes over the ratchet teeth in the extension direction,
Ratchet pawls that hang on ratchet teeth in the contracting direction,
(F) An elastic means for urging the ratchet pawl in the engaging direction with respect to the ratchet teeth by the abutting portion and for holding the ratchet tooth in the non-engaging position, and (g) formed at the tip of the outer cylinder. A first cam for forcedly rotating the ratchet pawl to the non-engaging position, and (h) a second cam formed at the base end of the outer cylinder forcibly rotating the ratchet pawl to the engaging position, The rotation of the first cam and the second cam is configured so that the rear end of the ratchet pawl can ride over the contact portion of the elastic means, and the elastic means is a steel ball that is the contact portion. ,
A switch such as a window including a compression coil spring for urging the steel ball in a direction of pressing the side surface of the ratchet pawl. 2. The window switch according to claim 1, further comprising a holder for accommodating the steel ball and the compression coil spring, the holder being fixed to the insertion member.