JPH0640826Y2 - Fixed stay device - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixed stay device capable of fixedly holding a wing body such as a door or a lid to a fixed frame body such as a building body or a box body in a predetermined open state.

[0002]

2. Description of the Related Art In a conventional fixed stay device disclosed in Japanese Utility Model Publication No. 55-10532, a second arm 2 is fitted between two first arms 1 and the second arm is inserted from the tip. The first arm is pivotally connected to the tip of the first arm at a position slightly closer to the middle part, the slot is provided in the first arm at a position closer to the middle part in the longitudinal direction, and the receiving groove is provided at the tip of the second arm in the longitudinal direction. And a pair of spring receiving end portions of the lock plate protruding from the slot, and a spring receiving portion cut and raised on the ventral surface of the first arm. Two tension coil springs are provided between the front and back to urge the lock plate to slide in the receiving groove.

In this fixed type stay device, when the wing body is opened up to a predetermined angle, the lock plate engages with the receiving groove by the bias of the tension coil spring, and is fixedly held in the open state. In actual use, the tension coil springs with long front and back surfaces exposed from the abdominal surface of the first arm are an obstacle, and there is a risk of pinching a fingertip or a peripheral object.

Furthermore, in this fixed type stay device, when a force in the closing direction acts on the wing body due to wind pressure or the like, the second
Bending stress acts in the plate thickness direction on the lock plate engaged with the receiving groove of the arm, which may cause the lock plate to be distorted.

[0005]

SUMMARY OF THE INVENTION Therefore, the object of the present invention is to accurately guide the sliding movement of the lock plate between the first arm and the second arm, and to prevent the sliding biasing spring of the lock plate from moving the fingertips and peripheral objects. (EN) It is possible to provide a fixed stay device that can be safely used without the risk of being caught, and that has no structural deformation of the lock plate and has high structural strength.

[0006]

In the fixed stay device of the present invention, the first arm 1 made of a flat bar is replaced by the second arm 2 made of a square pipe. Slidably fitted, first arm 1
Connect the first bracket 3 to the tip of
A second bracket 5 is connected to a base end portion of the second arm 2 by a pivot 6, a cutout 7 is provided in a right end surface 1a of the first arm 1, and tip portions of left and right side wall plate portions 2c and 2d of the second arm 2 are provided. The receiving holes 8a, 8b in the transverse direction, and the receiving holes 8a, 8b
The lock case 11 is fitted and fixed to the second arm 2 at a portion where the front side wall plate portion 11 of the lock case 11 exists.
a by the rear side wall plate portion 11b and the left side wall plate portion 11c
The front side wall plate portion 2a, the rear side wall plate portion 2b, and the left side wall plate portion 2c of the arm 2 are covered, and the left side wall plate portion 11c of the lock case 11 is covered.
The inner surface projection 21 of is fitted into the receiving hole 8a of the second arm 2.

The lock plate 9 is slidably inserted into the guide hole 23 penetrating the left side wall plate portion 11c of the lock case 11 and the inner surface projection 21 and the receiving hole 8b of the second arm 2 and the lock plate 9 is inserted into the first hole. 1 is arranged on the front side of the arm 1 and is provided with the notch 7
The lock projection 10 that is engaged with and disengaged from the right arm 2d of the second arm 2 is cut and raised toward the right end of the lock plate 9 so that the left wall 11c of the lock case 11 and the inner projection 21 are separated. Bamboo spring 1 with its center aligned with the guide hole 23
Two expansion and contraction cavities 18 are provided, and an opening 13 for accommodating the bamboo shoot spring 12 is provided in the left half of the lock plate 9.
3 is provided with a rightward projection 15 at the center of the left edge surface 14, and the small diameter end 12a of the bamboo child spring 12 fitted and supported by the rightward projection 15 is brought into contact with the left edge surface 14 of the opening 13 to form a bamboo child spring. The large-diameter end portion 12b of 12 is brought into contact with the left side wall plate portion 2c of the second arm 2.

In another embodiment, in the fixed stay device, a plurality of notches 7 are provided in the right end surface 1a of the first arm 1 along the length direction.

[0009]

In one mode of use of this fixed stay device, the first
The bracket 3 is fixed to the wing body 16, and the second bracket 5 is fixed to the fixed frame body 17. When the wing body 16 is opened and rotated about a hinge shaft (not shown),
The first arm 1 rotates about the pivot axis 4 with respect to the wing body 16, while the second arm 2 rotates about the pivot axis 6 with respect to the fixed frame body 17, and the first arm 1 is rotated from the second arm 2. Be withdrawn.

During this rotation operation, the locking projection 1 of the lock plate 9
The abdominal surface 10a of 0 is in sliding contact with the right end surface 1a of the first arm 1. When the wing body 16 is rotated to a predetermined angle, the lock plate 9 is pulled to the left side along the guide hole 23 and the receiving hole 8b by the urging force of the bamboo spring 12, and the locking projection 10 of the lock plate 9 is moved to the first arm 1. The notch 7 is automatically engaged. Since this engaged state is accurately maintained by the urging force of the bamboo spring 12, the wing body 16 is fixedly held at a predetermined open position.

To close the wing body 16, the lock plate 9 is guided through the guide hole 23 and the receiving hole 8 against the urging force of the bamboo spring 12.
Slide it to the right along b to lock the locking projection 9 on the locking plate 9.
Is disengaged from the notch 7 of the first arm 1 so that the first arm is slidable along the second arm 2. When the wing body 16 is closed and rotated about the hinge axis, the first arm 1 rotates about the pivot axis 4 with respect to the wing body 16 while the second arm 2 is fixed about the pivot axis 6 as described above. It rotates with respect to the frame body 17, and the first arm 1 is sequentially pushed into the second arm 2.

When the wing body 16 rotates slightly and the locking projection 10 of the lock plate 9 moves to a position where it does not face the notch 7, the finger is released from the lock plate 9. During the subsequent rotation operation, the abdominal surface 10a of the locking projection 10 of the lock plate 9 is brought into sliding contact with the right end surface 1a of the first arm 1 and the wing body 16
Will be closed.

When the first arm 1 is provided with a plurality of notches 7, the opening angle of the wing body 16 is different by appropriately selecting the notches 7 with which the locking projections 10 of the lock plate 9 are engaged. Is held fixed in a plurality of open positions.

[0014]

In the illustrated embodiment, the first arm 1 is composed of a thick flat bar, and two notches 7 are provided. A guide block 19 slidably contacting the front and rear side wall plates 2a and 2b and the left and right side wall plates 2c and 2d of the second arm 2 is fixed to the tip of the first arm 1, and the tip of the second arm 2 is A steady rest 20 into which the first arm 1 is fitted is fitted and fixed.

From the rectangular through hole 25 of the front side wall plate portion 11a of the lock case 11 to the through hole 2 of the front side wall plate portion 2a of the second arm 2.
The stopper 24 inserted in the lock case 1 is inserted into the lock case 1 by engaging the hook portion 27 with the inner surface of the front side wall plate portion 2a.
1 is fixed to the second arm 2. The front end surface of the locking protrusion 10 is in sliding contact with the inner surface of the rear side wall plate portion 2b of the second arm 2.

[0016]

As described above, in the fixed stay device of the present invention, the first arm 1 made of a flat bar is slidably fitted into the second arm 2 made of a square pipe, and the right end surface 1a of the first arm 1 is The notch 7 is provided in the second arm 2, and the receiving holes 8a and 8b are provided in the left and right side wall plate portions 2c and 2d of the second arm 2 in the transverse direction.
The guide hole 23 of the left side wall plate portion 11c of the lock case 11 fitted and fixed to the arm 2 and the receiving hole 8 of the second arm 2
The lock plate 9 is slidably inserted into b, and the locking projection 10 that engages and disengages with the notch 7 is cut and raised at the right end of the lock plate 9, so that a force in the closing direction acts on the wing body 16 due to wind pressure or the like. At this time, the force applied to the lock plate 9 via the first arm 1 is evenly distributed and supported by the left and right side wall plate portions 2c and 2d of the second arm 2, and the locking projection 10 On the other hand, since the force acts not in the plate thickness direction but in the plate width direction, even if a considerably large force is applied, the lock plate 9 and the locking projection 10 are not distorted and deformed, and a failure occurs for a long time. Can be used without fear.

Further, in the fixed stay device of the present invention, the front side wall plate portion 2 of the second arm 2 is constituted by the front side wall plate portion 11a, the rear side wall plate portion 11b and the left side wall plate portion 11c of the lock case 11.
a, the rear side wall plate portion 2b and the left side wall plate portion 2c, the receiving holes 8a,
The inner surface protrusion 2 of the lock case 11 is covered by the portion 8b.
1 is fitted in the receiving hole 8a of the second arm 2, and the left wall plate portion 11c of the lock case 11 is provided with the expanding / contracting hollow portion 18 of the bamboo shoot spring 12 by aligning the center with the guide hole 23.
The bamboo spring 12 is housed in the opening 13 in the left half of the lock plate 9, and the bamboo spring 12 is fitted and supported by the rightward protrusion 15 of the left edge 14 of the opening 13, and the small diameter end 12a of the bamboo spring 12 is held. The large diameter end 12b of the bamboo spring 12 and the left side wall plate 2c of the second arm 2.
Since the sliding contact and the sliding force of the lock plate 9 are properly performed, there is no risk of the fingertip or the peripheral object being caught in the bamboo spring 10 and it can be used safely.

In the fixed stay device according to the second aspect, since the plurality of notches 7 are provided in the right end surface 1a of the first arm 1 along the length direction, the wing body 16 is provided with a plurality of opening angles different from each other. It can be held fixed in position.

[Brief description of drawings]

FIG. 1 is a front view of a fixed type stay device according to an embodiment of the present invention in a shortened state.

FIG. 2 is a left side view of the fixed stay device.

FIG. 3 is a plan view of the fixed stay.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 6 is a vertical cross-sectional view of the fixed stay device in an extended state.

[Explanation of symbols]

 1 1st arm 1a Right end face of 1st arm 2 2nd arm 2a Front side wall plate part of 2nd arm 2b Rear side wall plate part of 2nd arm 2c Left side wall plate part of 2nd arm 2d Right side wall plate of 2nd arm Part 3 1st bracket 4 Axis 5 2nd bracket 6 Axis 7 Notch 8a Receiving hole 8b Receiving hole 9 Lock plate 10 Locking protrusion 10a Vent face of locking protrusion 11 Lock case 11a Front side wall plate of lock case 11b Lock case Rear side wall plate 11c Left side wall plate of lock case 11d Right side wall plate of lock case 12 Bamboo spring 12a Small diameter end of bamboo spring 12b Large diameter end of bamboo spring 13 Opening 14 Left edge 15 of opening Protrusion 16 Wing body 17 Fixed frame body 18 Expansion / contraction cavity 19 Guide block 20 Steady stop cap 21 Inner surface projection 22 Central projection 23 Proposed Hole 24 stop 25 hole 26 hole 27 hook

Claims (2)

[Scope of utility model registration request] 1. A first arm 1 made of a flat bar is slidably fitted in a second arm 2 made of a square pipe, and a first bracket 3 is connected to a tip end portion of the first arm 1 by a pivot 4, The second bracket 5 is connected to the base end portion of the arm 2 by a pivot shaft 6, and the notch 7 is provided in the right end surface 1a of the first arm 1, and the left and right side wall plate portions 2c, 2 of the second arm 2 are provided.
The receiving holes 8a and 8b are provided in the transverse direction at the tip of d, and the lock case 11 is fitted and fixed to the second arm 2 at the site where the receiving holes 8a and 8b are present. The rear side wall plate portion 11b and the left side wall plate portion 11c form the front side wall plate portion 2a and the rear side wall plate portion 2b of the second arm 2.
And the left side wall plate portion 2c are covered, and the inner surface projection 21 of the left side wall plate portion 11c of the lock case 11 is inserted into the receiving hole 8 of the second arm 2.
The second arm 2 and the guide hole 23 which is fitted into the lock case 11 and penetrates the left side wall plate portion 11c of the lock case 11 and the inner surface projection 21.
A lock plate 9 is slidably inserted into the receiving hole 8b of the first arm 1, the lock plate 9 is arranged on the front side of the first arm 1, and the lock plate 9 is engaged with and disengaged from the cutout 7 and the right side wall of the second arm 2 is attached. The lock protrusion 10 that comes into contact with and separates from the plate portion 2d is cut and raised toward the right end portion of the lock plate 9, and the left wall plate portion 11c of the lock case 11 and the inner surface protrusion 21 are aligned with the guide hole 23 in the center, and the bamboo spring 12 is formed. The expansion / contraction cavity 18 is provided, the left half of the lock plate 9 is provided with the opening 13 for accommodating the bamboo shoot spring 12, and the rightward protrusion 15 is provided at the center of the left edge 14 of the opening 13.
Bamboo spring 12 fitted and supported by the rightward protrusion 15
The fixed stay device in which the small-diameter end 12a of the second arm 2 is brought into contact with the left-side edge surface 14 of the opening 13, and the large-diameter end 12b of the bamboo spring 12 is brought into contact with the left-side wall plate portion 2c of the second arm 2. 2. The fixed stay device according to claim 1, wherein a plurality of notches 7 are provided in the right end surface 1a of the first arm 1 along the length direction.