JPH0640823Y2 - Fixed type stay - 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 which can hold and hold 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 disclosed in Japanese Utility Model Publication No. 55-10532, a first arm 1 having a two-piece structure is used.
The second arm 2 is fitted between the two arms, the second arm is pivotally connected to the tip of the first arm at a position slightly closer to the middle part than the tip part, and the first arm has a slot at a position closer to the middle part. Provided in the vertical direction, a receiving groove is provided in the lengthwise direction at the tip of the second arm, and a cross-shaped lock plate that engages with and disengages from the receiving groove is fitted into the slot, and a pair of springs of the lock plate protruding from the slot. Two tension coil springs are provided on the front and back sides between the receiving end portion and the spring receiving portion cut and raised on the ventral surface of the first arm to urge the lock plate to slide in the receiving groove.

According to this fixed type stay, when the wing body is opened to a predetermined angle, the lock plate is automatically engaged with the receiving groove by the bias of the tension coil spring, and the wing body is fixed and held in the open state. To be done. On the other hand, in order to close the wing body, the lock plate is pushed back and released from the receiving groove, thereby unlocking the first arm with respect to the second arm. Then, the wing body is slightly rotated to move the lock plate to a position where it does not face the receiving groove, and then the finger is released from the lock plate to fully rotate the wing body.

However, this fixed stay has an inconvenience in operation when it is used for a wing body whose width is so wide that an ordinary person cannot reach it even if his / her hands are fully expanded. In other words, this fixed stay does not have means for holding the lock plate in the unlocked position separated from the receiving groove, so that the lock plates of the left and right fixed stays are simultaneously released to close and rotate the wing body. Requires a minimum of two operators.

[0005]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a fixed stay in which even a wing body having a wide width can be easily closed by a single operator without any trouble. is there.

[0006]

The fixed type stay of the present invention will be described below with reference to the reference numerals in the accompanying drawings.
The first arm 1 is slidably fitted into the second arm 2, the first bracket 3 is connected to the tip end of the first arm 1 by a pivot 4, and the second bracket 5 is pivoted to the base end of the second arm 2. 6, a communication hole 7 facing the abdominal surface 19 of the first arm 1 is provided at the tip of the second arm 2, and the bottom of the guide cylinder 8 is communicated with the communication hole 7 at the tip of the second arm 2. The lock bar 9 fixed at its end and fitted in the guide cylinder 8 is urged to slide toward the ventral surface 19 of the first arm 1 by the compression coil spring 10, and the bottom end 14 of the lock bar 9 is attached to the first arm 1.
A receiving hole 15 for engaging and disengaging is provided.

A narrow portion 20b is formed on the belly surface 19 of the first arm 1.
A guide groove 20 composed of a wide portion 20a in which the lock rod 9 and the lock rod 9 are rotatable is provided along the length direction, and the receiving hole 15 is arranged in the bottom surface portion of the wide portion 20a on the tip end side.
A cam slope portion 22 with which the flank 21 of the lock rod 9 abuts is provided on the inner wall of the boundary between the a and the narrow portion 20b.

The bottom surface is inclined upward toward the belly surface 19, and the lock rod 9 is provided with a non-rotatable guide groove portion 25 continuous to the base end side of the narrow portion 20b. A hooking pin 26 is provided in the radial direction on the
A vertical hole 27 into which the latching pin 26 can be moved is provided in the side wall portion, and a horizontal hole 28 into which the latching pin 26 can enter is continuously provided on the upper end side of the vertical hole 27.

[0009]

In one mode of use of this fixed stay, the first 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 in the closed state, the bottom end surface of the lock rod 9 is in contact with the belly surface 19 of the first arm 1, and the latch pin 26 engages with the upper end portion of the vertical hole 27 of the guide tube 8. There is. The flank 21 of the lock bar 9 is arranged parallel to the longitudinal axis of the first arm 1.

When the wing body 16 is opened and rotated about the hinge shaft 18, the first arm 1 rotates about the pivot shaft 4 with respect to the wing body 16, while the second arm 2 rotates about the pivot shaft 6 as a fixed frame. It rotates with respect to the body 17, and the first arm 1 is sequentially pulled out from the second arm 2. During the rotation operation of the wing body 16, the bottom end surface of the lock rod 9 moves toward the tip portion of the first arm 1 while slidingly contacting the belly surface 19.

At the end of rotation of the wing body 16, the bottom end portion 14 of the lock rod 9 passes through the guide groove portion 25 and the guide groove portion 2
0, and when the wing body 16 is opened to a predetermined angle, the lock rod 9 is biased by the compression coil spring 10.
The bottom end portion 14 of the first arm 1 is automatically engaged with the receiving hole 15 of the first arm 1. At this time, the latch pin 26 moves downward in the vertical hole 27 and engages with the lower end of the vertical hole 27. Compression coil spring 10
Since the lock rod 9 is accurately maintained in the locked position by the urging force, the wing body 16 is fixedly held in the predetermined open position.

To close the wing body 16, the latch pin 26 is moved up to near the upper end of the vertical hole 27 to pull up the lock rod 9, and then the latch pin 26 is moved to the horizontal hole 28.
The lock bar 9 is rotated by a certain angle so as to enter. As a result, the bottom end portion 14 of the lock bar 9 is accurately maintained in the unlocked position where it is separated from the receiving hole 15 of the first arm 1. In this state, the flank 21 of the bottom end portion 14 has the first arm 1
Are arranged diagonally with respect to the longitudinal axis.

Thereafter, when the wing body 16 is closed and rotated about the hinge shaft 18, the first arm 1 rotates about the pivot shaft 4 with respect to the wing body 16 as described above, while the second arm 2 rotates. The first arm 1 is sequentially inserted into the second arm 2 by rotating around the pivot 6 with respect to the fixed frame body 17.

When the wing body 16 rotates slightly and the bottom end 14 of the lock rod 9 moves in the wide portion 20a of the guide groove portion 20 and reaches the boundary between the wide portion 20a and the narrow portion 20b, the bottom portion 14 The flank 21 of the end 14 abuts the cam slope 22. When the closing of the wing body 16 is further continued, the lock rod 9 whose side flank 21 is pushed by the cam slope 22 passes through the narrow portion 20b of the guide groove 20 and the side flank 21 moves toward the first arm. It can be turned so that it is parallel to the longitudinal axis of 1.

The bottom end portion 14 of the lock rod 9 that has passed through the narrow portion 20b is lifted up in the process of passing through the guide groove portion 25 and comes into contact with the ventral surface 19 of the first arm 1 again. Until the wing body 16 is fully closed, the bottom end surface of the lock rod 9 moves toward the base end side of the first arm 1 while slidingly contacting the belly surface 19.

[0016]

In the illustrated embodiment, the first arm 1 is composed of a thick flat bar, and two receiving holes 15 are provided. The second arm 2 has a pair of upper and lower rail portions 29,
The guide tube 8 is formed of an L-shaped plate, and the bottom end of the cylindrical guide tube 8 is fitted into the communication hole 7 of the second arm 2 and is fixed by caulking. A knob 11 is fitted on the outer side of the guide cylinder 8, and a through hole 12 is formed at the top end of the guide cylinder 8.
The top end portion 13 of the lock rod 9 protruding from the through hole 31 at the top end portion of the knob barrel 11 is fixed to the knob barrel 11 by caulking and fixing via a washer 32.

A first bracket 3 is attached to the tip of the first arm 1.
Are connected to each other by a pivot 4 and a second arm 2 is provided with a second end
The bracket 5 is connected by a pivot 6. The compression coil spring 10 is fitted to the small diameter portion of the lock rod 9, and is inserted between the intermediate step surface 33 of the lock rod 9 and the inner surface 34 of the top end portion of the guide tube 8. The bottom end of the lock rod 9 is oval in cross section, the side flank 21 is a flat surface, and the side end 23 is an arc surface. The latch pin 26 is
It is screwed and fixed to a diametrical mounting hole 35 provided in the central portion of the flank 21.

The inner wall on the base end side of the narrow portion 20b of the guide groove 20 has an arcuate shape so that the side end face 23 of the bottom end 14 does not come into contact with the lock rod 9 when the direction is changed. The escape portion 24 is provided facing the cam slope portion 22.
The two small-diameter recesses 36 provided on the top end surface of the knob 11 and the small-diameter projections 38 provided on the belly surface 37 of the second arm 2 are received by the bottom end 14 of the lock rod 9 when aligned in a straight line. Hole 15
Or the bottom end portion 14 is arranged at a position where it can be engaged with the receiving hole 15.

On the back side abdominal surface of the tip end of the first arm 1, a retaining projection 39 is punched out.
Contacts the stop strip 40 fixed to the tip of the second arm 2 to prevent the first arm 1 from being completely withdrawn from the second arm 2.

[0020]

As described above, the fixed stay of the present invention is
The lock rod 9 is fitted into the guide tube 8 fixed to the second arm 2, and the compression rod spring 10 slides and urges the lock rod 9 toward the ventral surface 19 of the first arm 1 so that the narrow portion 20b and the lock rod 9 are separated. A guide groove 20 including a rotatable wide portion 20a is provided on the abdominal surface 19 of the first arm 1, and the wide portion 20 is provided.
A receiving hole 15 into which the bottom end 14 of the lock rod 9 is engaged and disengaged is provided in the bottom surface portion on the tip side of a, and the wide portion 20a and the narrow portion 20b are provided.
A cam slope 22 is provided on the inner wall of the boundary of the lock rod 9 against which the side flank 21 of the lock rod 9 abuts. The bottom face is inclined upward toward the belly face 19, and the lock rod 9 has a non-rotatable guide groove 25. The lock rod 9 is continuously provided on the base end side of the narrow portion 20b.
A hooking pin 26 is provided on the side surface of the intermediate portion of the guide tube, and a vertical hole 27 is formed in the side wall of the guide tube 8 so that the hooking pin 26 can move. The hooking pin 26 can be inserted into the upper end of the vertical hole 27. Horizontal holes 28 are continuously provided, and the latch pin 2 is provided.
By engaging 6 with the lateral hole 28 through the vertical hole 27, the lock bar 9 can be accurately maintained in the unlocked position separated from the receiving hole 15, so that even in the wing body 16 having a considerably wide lateral width, Without needing any helper
The operation of closing the wing body 16 can be easily and easily performed by a single operator.

[Brief description of drawings]

FIG. 1 is a plan view showing a usage state of a fixed stay according to an embodiment of the present invention.

FIG. 2 is a left side view of the fixed type stay in a pulled-out state.

3 is a cross-sectional view taken along the line AA of FIG.

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

5 is a cross-sectional view taken along the line CC of FIG.

FIG. 6 is a plan view of the fixed stay.

7 is a cross-sectional view taken along the line DD of FIG.

[Explanation of symbols]

 1 1st arm 2 2nd arm 3 1st bracket 4 Axis 5 5th bracket 6 Axis 7 Connecting hole 8 Guide cylinder 9 Lock rod 10 Compression coil spring 11 Knob barrel 12 Guide cylinder through hole 13 Lock rod top end 14 Lock Bottom end of rod 15 Receiving hole of first arm 16 Wing body 17 Fixed frame body 18 Hinge shaft 19 Vent surface of 1st arm 20 Guide groove portion 21 Side flank surface of lock rod 22 Cam slope portion 23 Side end surface of lock rod 24 Guide groove portion Relief part 25 Guide groove part 26 Locking pin 27 Vertical hole of guide cylinder 28 Horizontal hole of guide cylinder 29 Rail part of second arm 30 Rail part of second arm 31 Through hole of knob cylinder 32 Washer 33 Intermediate part of lock bar Step surface 34 Inner surface of top end of guide cylinder 35 Mounting hole for lock rod 36 Small diameter recess of knob 37 Abdominal surface of second arm 38 Small diameter projection 39 of second arm Stop protrusion 40 stop strip

Claims (1)

[Scope of utility model registration request] 1. A first arm 1 is slidably fitted in a second arm 2, and a first bracket 3 is attached to a tip portion of the first arm 1.
Are connected to each other by a pivot 4 and a second arm 2 is provided with a second end
The bracket 5 is connected by a pivot 6, a communication hole 7 facing the ventral surface 19 of the first arm 1 is provided at the tip of the second arm 2, and the tip of the second arm 2 is communicated with the communication hole 7 for guiding. The bottom end of the cylinder 8 is fixed, and the lock bar 9 fitted in the guide cylinder 8 is slid and biased toward the ventral surface of the first arm 1 by the compression coil spring 10, and the lock bar 9 is attached to the first arm 1.
A receiving hole 15 for engaging and disengaging the bottom end 14 of the first arm 1 is provided.
A guide groove 20 composed of a narrow portion 20b and a wide portion 20a on which the lock bar 9 can rotate is provided on the belly surface 19 of the plate along the lengthwise direction, and the receiving hole 15 is formed in the bottom portion of the wide portion 20a on the tip end side. The cam slope 22 that the side flank 21 of the lock bar 9 contacts is provided on the inner wall of the boundary between the wide portion 20a and the narrow portion 20b, and the bottom portion is inclined upward toward the belly surface 19, A guide groove portion 25 in which the lock rod 9 cannot rotate is continuously provided on the proximal end side of the narrow portion 20b, and a latch pin 26 is provided on the side surface of the middle portion of the lock rod 9 so as to project in the radial direction. A fixed stay in which a vertical hole 27 into which the latching pin 26 can be moved is provided, and a horizontal hole 28 into which the latching pin 26 can be inserted is continuously provided on the upper end side of the vertical hole 27.