JP3373489B2 - Two-stage type stay device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stay device that stops and holds a door in an open state, and particularly relates to a two-stage stay device that can hold the door at two opening degrees.

[0002]

2. Description of the Related Art A conventional two-stage stay device is shown in FIG.
The keeper pin 11 which moves in the guide groove 4 provided in the fixed body 1 is coupled to one end of the arm 10, and the other end of the arm 10 is pivotally attached to the door D via the bracket 13 as shown in FIG. There is a first recessed support portion 5 and a second recessed support portion 6 formed in a curved shape on the leaf spring fixed to the fixed main body 1, and the head 11a of the keeper pin 11 is sequentially engaged with this,
The door D is stopped and held at two opening levels.

However, depending on the user of the stay device, the choice of the opening degree of the door D is made only when the door D is opened, and when the door D is closed, the door D is not stopped and held halfway open. There is a request to change from the fully open state to the fully closed state at once. However, in the above-mentioned conventional apparatus, even when the door D is closed, the door D must be closed from the fully open position through the half open position, and the second recessed support portion 6 for holding the half open and the keeper pin 11 are in the middle of closing. Since the head 11a always engages with each other, there is a feeling of troublesome operation.

[0004]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to enable an arbitrary stop and hold at two opening positions when a door is opened, and at the same time, to return from a fully open state to a fully closed state at the same time when the door is closed. SUMMARY OF THE INVENTION It is an object of the present invention to provide a two-stage stay device that is simple and light.

[0005]

According to the invention of claim 1,
In the two-stage type stay device, a guide groove 4 in which a keeper pin 11 at one end of an arm 10 is slidable is provided in the horizontal portion 3 of a fixed main body 1 which is long in the horizontal direction in the lengthwise direction of the fixed main body 1. , A door D is pivotally attached to the other end 12 of the arm 10,
The fixed main body 1 side is provided with a first recessed support portion 5 and a second recessed support portion 6 capable of elastically retaining and separating the head portion 11a of the keeper pin 11, and opening the door D in two steps. It is intended to stop and hold at.

The feature of the invention of claim 1 is that
In the two-stage stay device described above, when the door is at the end of the fully opened position in the stroke range of the keeper pin 11,
The head portion 11a of the keeper pin 11 and the first recessed support portion 5 made of a leaf spring 7 capable of engaging and disengaging the keeper pin 11 form the standing wall portion 2 of the fixed body 1.
When the keeper pin 11 is in the intermediate position in the stroke range of the keeper pin 11, a stopper lever 21 supported by a pivot 20 perpendicular to the standing wall 2 is provided in the vertical direction. Axis 20
There is a long shaft hole 22 in the lengthwise direction, and a wide engaging shoulder portion 2 is provided at the bottom of the stopper lever 21.
3 is formed, and a compression coil spring 24 is provided between the pivot 20 and the engaging shoulder 23, and the stopper lever 2
1 is elastically urged downward, and the stopper lever 2
When the keeper pin 11 is moved from the door closed position to the opening direction, the second recessed support portion 6 is formed on the lower end surface of 1.
The head portion 11a of the keeper pin 11 can be engaged with and separated from the second recessed support portion 6 only at a position where the stopper lever 21 comes into contact with the lower end portion and the stopper lever hits the stopper 8 provided in the fixed main body 1. When the head 11a of the keeper pin 11 is further moved in the opening direction of the door D, the stopper lever 21 moves the stopper lever 21 into its long hole. The coil spring 24 is compressed in the 22 direction, and the head 1 of the keeper pin 11 is compressed.
1a passes through the position of the protruding portion 25 and can engage and disengage with the first recessed supporting portion 5, and when the keeper pin 11 moves from the open position to the closed position, it contacts the protruding portion 25 of the stopper lever 21. , The stopper lever 21 is tilted in the opposite direction so that it can be returned to the open position .

In the invention of claim 2 , the stock bar lever 2
As a structure for elastically urging 1 downward, a side L-shaped spring seat 26 is further pivotally attached to the pivot 20,
The upper end portion of the stopper lever 21 is slidably inserted into the slit portion 26b of the horizontally bent spring receiving portion 26a of the spring seat 26, and the spring receiving portion 26a and the engaging shoulder portion 23 of the stopper lever 21 are connected to each other. In between, stopper lever 2
1 is provided with a compression coil spring 24a.

[0008]

In the invention of claim 1, when the door D in the fully closed state (see FIGS. 1 and 2) is opened, the keeper pin 11 moves in the guide groove 4 in the opening direction and the stopper lever is opened. It hits the side surface of 21 and is rotated around the pivot 20, and part of the stopper lever 21 hits the stopper 8 provided in the fixed body 1 (see FIG. 3).

When the door D is further opened slightly, the stopper lever 21 is prevented from rotating by the stopper 8. Therefore, the head portion 11a of the keeper pin 11 slips under the stopper lever 21 and the stopper lever 2
1 and spring 24 are lifted against the restoring force.

At this time, the upper portion of the stopper lever 21 slightly moves in the diametrical direction of the pivot shaft 20, and the stopper lever 21
The keeper pin 11 is attached to the second concave support portion 6 provided on the lower end surface of the
The head portion 11a of the above is engaged, and the stopper lever 21 is locked in that position (see FIG. 4). This state is the half-opened state of the door D.

When the door D is further opened to the fully open position by hand, the head portion 11a of the keeper pin 11 hits the inner surface of the protrusion 25 of the stopper lever 21 held by the stopper 8 and the stopper lever 21 moves in the longitudinal direction. By component force,
Further, in order to further push up the stopper lever 21, the keeper pin 11 finally passes through the lower end of the protrusion 25 (see FIG. 5) and moves away from this.

Then, the first concave supporting portion 5 made of a leaf spring.
, And the door D is stopped and held in the fully open position (see FIG. 6) . During this time, the stopper lever 21 returns downward due to the restoring force of the spring 24, and the lower end of the protrusion 25 returns into the guide groove 4.

When the door D is closed by hand, the keeper pin 11
Is moved in the closing direction, the protrusion 2 of the stopper lever 21
Since 5 is located in the guide groove 4, the keeper pin 11
The head 11a of the head hits the outside of the protrusion 25, and the stopper lever 21 is rotated around the pivot 20 in the direction opposite to the front to incline (see FIG. 7). When the keeper pin 11 further moves in the closing direction, the lower end of the protrusion 25 comes out of the guide groove 4, and the head portion 11a of the keeper pin 11 passes under this and fits into the second recessed support portion 6. Instead, move to the closed position at once. When the keeper pin 11 passes through the stopper lever 21, the stopper lever 21 returns to its original position by its own weight (see FIGS. 1 and 2).

In the invention of claim 2 , in addition to the operation of the invention of claim 1, the following operation is performed. Stopper lever 2
1 is a compression coil spring 24a wound around this, and the upper end of the compression coil spring 24a has a pivot 20
Since the lower end of the compression coil spring 24a is engaged with the engagement shoulder portion 23, the restoring force of the compression coil spring 24a accurately acts in the length direction of the stopper lever 21. Then, the engagement between the second recessed support portion 6 and the head portion 11a of the keeper pin 11 is ensured, and this is securely held in place.

[0015]

DETAILED DESCRIPTION OF THE INVENTION In the illustrated embodiment, a fixed body 1
Is a long member having an L-shaped cross section composed of the standing wall portion 2 and the horizontal portion 3, and the standing wall portion 2 is fixed to a fixed frame body such as a box body of the building. A bracket 13 is provided on the other end 12 of the arm 10.
The door D is pivotally attached by the connecting pin 14. A part of the standing wall portion 2 of the fixed body 1 is cut and bent in parallel with the horizontal portion 3 to form a stopper 8, and the stopper 8 has a leaf spring 7
Are fixed by caulking pins 15. By forming a part of the leaf spring 7 in a wave shape, the first recessed support portion 5 with which the head portion 11a of the keeper pin 11 engages is provided. The shape of the first recessed support portion 5 is a curved shape of ¼ to ⅕ arc having the same dimension as the radius of curvature of the partial spherical surface which is the shape of the head portion 11 a of the keeper pin 11. The other end of the leaf spring 7 is obliquely bent and protruded from the stopper 8 toward the stopper lever 21 side.
The shock caused by the collision of No. 1 is buffered. The stopper lever 21 side of the stopper 8 has a bifurcated portion 9 in plan view so that the stopper lever 21 can be inserted. When the stopper lever 21 is pushed up in the longitudinal direction by the keeper pin 11, the stopper 8 is provided in the transverse direction of the guide groove 4. The lever 21 is prevented from moving.

The lower end surface of the stopper lever 21 has a first
A recess having the same size as that of the recessed support portion 5 is formed, and the bottom surface on the open side is the first cam inclined surface 21a so that the head 11a of the keeper pin 11 can easily slip in, and the inner surface of the protrusion 25 is also the keeper pin 11. The second cam inclined surface 25a is provided so that the head portion 11a of the head can easily escape. In the above examples,
As a means for returning the stopper lever 21 to the vertical posture, a means relying on its own weight is used, but a return spring may be provided separately. Alternatively, the spring seat 26 is made immobile with the fixed body 1, that is, the fixed body 1, the pivot 20, and the spring seat 26 are integrally formed, and the stopper lever 21 is provided.
If the spring seat 26 does not incline even if is tilted, and the external force disappears, the stopper lever 21 becomes the compression coil spring 24a.
It is also possible to return to the vertical position by. With this configuration, the door D can be used for a skylight, a canopy, a hatch, etc. in which the door D is horizontally arranged.

In the above embodiment, when the keeper pin 11 pushes the side surface of the stopper lever 21 to incline it, the first
The head 11 of the keeper pin 11 is formed by the inclined cam surface 21a.
As a result, the keeper pin 11 easily slides into the second concave support portion 6 against the compression coil spring 24a, and the restoring force of the compression coil spring 24a causes the keeper pin 11 to move to the head 11a of the second concave support portion 6. Stable in the fitted state. When the door D is further opened, the head portion 11a of the keeper pin 11 hits the second cam inclined surface 25a inside the protrusion 25, and the stopper lever 21 is lifted by the component force of the stopper lever 21 in the longitudinal direction. The keeper pin 11 easily passes through the lower side.

[0018]

According to the invention of claim 1, when the door D is opened, the head portion 11a of the keeper pin 11 is moved by the leaf spring 7.
The first recessed support portion 5 and the stopper lever 21
Since it sequentially engages with the formed second recessed support portion 6 , the door D can be stopped and held at two opening degrees, while when the door D is closed, the head portion 11a of the keeper pin 11 contacts the second recessed support portion 6. It is possible to quickly return the door D from the fully open state to the fully closed state at once without engaging with each other. Further, the overall structure is simple, and the stability in the engaged state of the half-opened second recessed support portion 6 and the keeper pin 11 is good, and the door D is accurately restrained and supported at that position.

In the invention of claim 2 , the compression coil spring 24 is wound around the stopper lever 21 and the upper end of the compression coil spring 24 is brought into contact with the spring seat 26. Therefore, the restoring force of the compression coil spring 24 is the length of the stopper lever 21. It acts only in the direction, and ensures that the second recessed support portion 6 at the lower end and the keeper pin 11 are kept engaged.

[Brief description of drawings]

FIG. 1 is a plan view of a two-stage stay device according to an embodiment of the present invention when a door is fully closed.

FIG. 2 is a front view of the stay device of FIG.

FIG. 3 is a front view of the stay device of FIG. 1 in which a keeper pin is moving in an opening direction.

FIG. 4 is a front view of the stay device of FIG. 1 in a state in which a keeper pin is fitted into a second recessed support portion.

FIG. 5 is a front view of the stay device of FIG. 1 in which the keeper pin is further moving from the second recessed support portion toward the fully open direction.

FIG. 6 is a front view of the stay device of FIG. 1 in a state in which a keeper pin is fitted in a first recessed support portion.

7 is a front view of the stay device of FIG. 1 while the keeper pin is passing through the second recessed support portion. FIG.

FIG. 8 is a front view of a prior art two-stage stay device.

[Explanation of symbols]

1 fixed body 2 Standing wall 3 Horizontal part 4 guide groove 5 First concave support 6 Second concave support 7 leaf spring 8 stopper 10 arms 11 Keeper Pin 12 other end 13 bracket 14 Connecting pin 20 Axis 21 Stopper lever 22 Long axis hole 23 Hanging shoulder 24 spring 25 Projection 26 Spring seat

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Claims (2)

(57) [Claims] 1. A guide groove 4 in which a keeper pin 11 at one end of an arm 10 is slidable is provided in a horizontal portion 3 of a fixed main body 1 which is long in the horizontal direction so as to be long in the longitudinal direction of the fixed main body.
The door D is pivotally attached to the other end 12 of 0, and the head portion 11a of the keeper pin 11 is elastically engaged with and held away from the fixed body 1 side by the first recessed support portion 5 and the second recessed support portion 6. In the stay device capable of stopping and holding the door D at two stages of opening , the door is fully opened in the stroke range of the keeper pin 11.
When it is at the end, it is hooked with the head 11a of the keeper pin 11.
The first recessed support portion 5 composed of a leaf spring 7 that can be separated and moved is fixed.
It is provided on a part of the standing wall portion 2 of the main body 1 and is located at an intermediate position in the stroke range of the keeper pin 11.
In some cases, it is supported by a pivot 20 that is perpendicular to the standing wall 2.
The stopper lever 21 is installed vertically and
The fitting portion of the upper lever 21 with the pivot 20 has this length
There is a long hole 22 in the direction of the stopper lever 21
A wide engaging shoulder portion 23 is formed in the lower portion, and the compression coil spring 2 is provided between the pivot 20 and the engaging shoulder portion 23.
4 is provided, and the stopper lever 21 is elastically moved downward.
The stopper lever 21 is biased, and
2 The recessed support part 6 is formed, and the keeper pin 11 is the door.
When moving from the closed position to the opening direction, the stopper lever 2
The stopper lever is attached to the fixed main body 1 by abutting on the lower end of 1.
Keeper pin 11 only at the position where it hits stopper 8 provided
The head portion 11a of the can be engaged with and separated from the second recessed support portion 6.
Yes , the protrusion 25 of the second recess support portion 6 near the first recess support portion 5 is
The head part 11a of the keeper pin 11 is elongated downward
When the door D moves further in the opening direction, the stopper lever
21 by compressing the coil spring 24 in the direction of its long hole 22
The head portion 11a of the keeper pin 11 is located at the projection 25 position.
Through the first concave support portion 5 so that it can be engaged with and separated from the first concave support portion 5.
When the keeper pin 11 moves from the open position to the closed position,
When the stopper lever 21 comes into contact with the protrusion 25,
Tilt the top lever 21 in the opposite direction and return to the open position.
A two-stage stay device characterized by being equipped as much as possible . 2. The stock bar lever 21 is elastically moved downward.
As a structure for urging, the side surface of the pivot 20 is L-shaped.
Type spring seat 26 is pivotally attached, and the spring seat 26 is horizontal.
The slit 26b of the spring receiving portion 26a bent in the
The top end of the topper lever 21 is slidably inserted.
The shoulder portion of the spring receiving portion 26a and the stopper lever 21
It was fitted to the stopper lever 21 between 23 and
It has a feature that the compression coil spring 24a is provided.
The two-stage stay device according to claim 1, which is a characteristic .