JPH0712589Y2 - Piece board lock type 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 stay device for stopping and holding a wing body such as a door or a lid of a switchboard storage box at a predetermined open position.

[0002]

2. Description of the Related Art As disclosed in Japanese Utility Model Laid-Open No. 63-143663, a piece plate locking stay device is constructed such that one end of a first arm is pivotally attached to a fixed frame and one end of a second arm is a wing body. Pivotally, the second arm is slidably inserted in the first arm in the longitudinal direction, the piece plate is pivotally attached to the abdominal plate portion on the other end side of the first arm, and the corner portions of the piece plate come in and out. The first slot is provided in the end face plate portion, the claw plate is fixed to the abdominal face plate portion on the other end side of the second arm, and the second slot in which the corner portion of the piece plate goes in and out is provided in the end face plate portion. By rotating the piece plate with the claw plate when opening the, the corners of the piece plate are projected from the second slot and the first slot to lock the second arm non-slidingly in the shortening direction while closing the wing body. Occasionally, the second arm may be slid in the extension direction and the piece plate may be rotated with the claw plate. , Releasing the locking of the second arm.

In the piece plate locking type stay device adopting such an operating principle, in order to release the lock of the second arm by the piece plate, the second arm is once slid in the extending direction, that is, , The wing body must be rotated slightly in the opening direction, but when the wing body swung by strong winds swings to such an extent that the unlocking rotation angle is reached, the wing body is contrary to the intention of the user. There is a risk of being unlocked and closed.

[0004]

SUMMARY OF THE INVENTION It is, therefore, an object of the present invention to provide a piece plate locking stay device which prevents accidental closure of the wing body even if it is swung by the wind.

[0005]

The stay device according to the present invention will be described with reference to the accompanying drawings. One end of the first arm 1 is fixed to the fixed frame 4 or the wing body 6.
The second arm 2 is pivotally attached to the wing body 6 or the fixed frame 4, and the first arm 1 is slidably fitted in the second arm 2 in the longitudinal direction. On the other end side of the first arm 1, a piece plate 7 is pivotally attached to the abdominal surface plate portion 1a by a pivot 11, and a first slot 8 through which a corner portion of the piece plate 7 goes in and out is provided at an end surface plate portion 1b perpendicular to the abdominal surface portion 1a. To be installed. On the other end side of the second arm 2, a claw plate 9 is fixed to the abdominal surface plate portion 2a, and a second slot 10 through which a corner portion of the piece plate 7 goes in and out is provided in an end surface plate portion 2b perpendicular to the abdominal surface plate portion 2a.

By rotating the piece plate 7 with the claw plate 9 when the wing body 6 is opened, the corner portions of the piece plate 7 are projected from the second slot 10 and the first slot 8 and the second arm 2 is slid in the shortening direction. Lock immobilely. When the wing body 6 is closed, the second arm 2 is once slid in the extension direction to move the claw plate 9
By further rotating the piece plate 7 with, the locking of the second arm 2 by the piece plate 7 is released. A lock plate 12 is movably arranged in the transverse direction on the rear surface side of the abdominal surface plate portion 1a of the first arm 1, and a lock end 12a of the lock plate 12 is disengaged from an end surface plate portion 2b of the second arm 2. The lock receiving hole 13 is provided in the transverse direction, and the lock plate 12 is fixed to the end plate 2 by the locking spring 14.
Sliding bias toward b.

In another embodiment, the operation button 15 is arranged on the front surface side of the abdominal surface plate portion 1a of the first arm 1, and the operation button 15 is inserted and inserted into the transverse guide slot 16 of the abdominal surface plate portion 1a. The leg 17 is fixed to the lock plate 12, the bearing seat 19 is fitted and fixed in the through hole 18 of the abdominal surface plate portion 1a, and the stepped locking shaft 21 is fitted and inserted into the center receiving hole 20 in the front-rear direction of the bearing seat 19.
The large diameter shaft portion 21a of the locking shaft 21 is engaged with and disengaged from the locking recess 22 on the front surface side of the lock plate 12, and the small diameter shaft portion 21b of the locking shaft 21 is engaged.
Is inserted into the guide groove hole 23 in the transverse direction of the lock plate 12.

The locking shaft 21 is slid and biased toward the lock plate 12 by the locking spring 24, and the large-diameter shaft portion 2 of the locking shaft 21 is pushed.
A relief recess 25 into which the tip of the small diameter shaft portion 21b enters when the 1a is engaged with the locking recess 22 is provided in the abdominal surface plate portion 2a of the second arm 2, and the small diameter shaft portion 21b is provided with the relief recess 25 and the claw plate 9.
The length of the locking shaft 21 is set so that the large-diameter shaft portion 21a escapes from the locking concave portion 22 when pushed by the abdominal surface plate portion 2a in between, and the lock receiving end portion 12a of the lock 12 receives the lock receiving portion. A cam slope 26, which comes into sliding contact with the hole edge 13a of the hole 13, is provided on the side opposite to the claw plate 9.

[0009]

As shown in FIG. 5, when the second arm 2 is slid in the most shortened direction, that is, when the wing body 6 is closed, the corner 7a of the piece plate 7 is the end face plate of the second arm 2. It is in the lying position where it abuts 2b. The large-diameter shaft portion 21a of the locking shaft 21 is engaged with the locking recess 22 of the lock plate 12 as shown in FIG. 8, and the locking end 12a of the lock plate 12 and another portion of the second arm 2 are locked. A small gap is left between the end face plate portion 2b. As shown in FIG. 9, the small diameter shaft portion 21 b of the locking shaft 21 is engaged with the central portion of the guide groove hole 23.

When the second arm 2 slides in the extending direction as the wing body 6 is opened and rotated, the claw plate 9 contacts the corner portion 7d of the piece plate 7 as shown in FIG. Further, the second arm 2
When is slid in the extending direction, the piece plate 9 pushed by the claw plate 9 rotates counterclockwise in FIG. 10 around the pivot 11, and the corner portion 7b projects outward from the second slot 10 and the first slot 8. To do. When the second arm 2 is slid in a slightly shortened direction from the fully extended position, that is, the fully open position of the chain double-dashed line in FIG. 1, the second slot 10 is moved as shown in FIG.
Since the edge portion 10a of the blade pushes the corner portion 7b, the piece plate 7 is further rotated counterclockwise, and the corner portion 7c comes into contact with the end face plate portion 2b. As a result, the second arm 2 is locked by the piece plate 7, and the second arm 2 is prevented from sliding in the shortening direction.

When the second arm 2 is extended to the maximum extent as described above, the abdominal surface plate portion 2a of the second arm 2 comes into contact with the small diameter shaft portion 21b of the locking shaft 21 and the small diameter shaft portion 21b. The guide groove hole 2 of the lock plate 12 is made to escape from the escape recess 25.
Since the entire length is immersed in 3, the large-diameter shaft portion 21a is disengaged from the locking recess 22 of the lock plate 12. Therefore, the lock plate 12 comes into contact with the end face plate portion 2b of the second arm 2 by the sliding bias of the locking spring 14. When the second arm 2 is slid in the slightly shortening direction as described above, the end face plate portion 2b
The lock plate 12 slidably contacted with the lock end 12a is engaged with the lock receiving hole 13. Therefore, the second arm 2 is also restrained from sliding in the extension direction, and the wing body 6 is stopped and held at the release position.

To rotate the wing body 6 in the closing direction,
The operation button 15 is slid in the unlocking direction. By this operation, the lock end portion 12a of the lock plate 12 is released from the lock receiving hole 13 as shown in FIG. 13, and the large diameter shaft portion 21a of the locking shaft 21 is locked by the lock plate 12 as shown in FIG. Locking recess 2
Reengage with 2. Since this engaged state is held by the biasing force of the locking spring 24, the lock end 12 of the lock plate 12 is retained.
The re-engagement of a with the lock receiving hole 13 is prevented.

Here, once the second arm 2 is extended to the maximum position, the piece plate 7 pushed by the claw plate 9 further rotates counterclockwise, and the corners 7b and 7c are moved to the second slot 10.
Also, protruding from the first slot 8, the piece plate 7 abuts on the opposite edge 10b of the second slot 10. At the time of extension to the maximum position, the tip of the small diameter shaft portion 21b is pushed by the abdominal surface plate portion 2a, so that the large diameter shaft portion 21a of the locking shaft 21 comes out of the locking recess 22. Therefore, the lock end 12a of the lock plate 12 biased by the lock spring 14 contacts the end face plate 2b as shown in FIG.

The wing body 6 is closed and rotated to rotate the second arm 2
17 is slid in the shortening direction, the piece plate 7 is pushed by the edge portion 10a of the second slot 10 and further rotated counterclockwise as shown in FIG. It immerses inside 2 and the corner 7c follows it. When the second arm 2 continues to slide in the shortening direction, the corner 7c pushed back inward of the second arm 2 slides against the end plate 2b and returns to the original position shown in FIG. To do. However, piece board 7
The arrangement of the corners of the is different by 180 degrees.

[0015]

In the illustrated embodiment, the first arm 1 and the second arm 2 are made of stainless steel channel steel.
The bracket 3 is connected to one end of the second arm 2 by a pivot 27, and the bracket 5 is connected to the one end of the second arm 2 by a pivot 28. In the closed state of the wing body 6, the bracket 3 of the first arm 1 is closer to the hinge shaft 29 than the bracket 5 of the second arm 2. In FIG. 1, the alternate long and short dash line 30 indicates the normal release position of the wing body 6, and the alternate long and two short dashes line 31 indicates the rotational position when the wing body 6 is once further opened for unlocking the second arm 2. On the front surface of the operation button 15, an arrow 32 indicates the sliding direction when unlocking.

A spacer cylinder 33 is attached to the front end cylinder of the bearing seat 19.
The bearing seat 19 is prevented from being pulled out from the through hole 18 by the rear end large-diameter disc portion 19a and the spacer cylinder 33. An escape cavity 34 of the spacer cylinder 33 is provided in an oval shape in the transverse direction on the back side of the operation button 15, and a compression coil spring is formed at one end of the cavity 34.
Mount recess portion 35 of the locking spring 14, which is is provided. The bearing seat 19 is fitted into the through hole 18 of the first arm 1 and fixed.
The spacer cylinder 33 fitted to the bearing seat 19 is locked.
While one end of the spring 14 is pressed, the spring 14 for locking is
The other end of the operation button is pressed against the inner wall surface of the accommodation recess 35 of the operation button 15.
Since they are in contact with each other, the operation button 15 and the operation button 15
The lock plate 12 that is tied is the locking end of the lock plate 12.
12a slides toward the end face plate portion 2b of the second arm 2.
Is urged to. As shown in FIG. 19, the locking spring 14 can also be configured by a torsion spring, and the coil portion of the torsion spring is fitted into the bearing seat 19 and each linear end portion 14a,
14b is in pressure contact with the connecting leg 17.

Connecting leg 1 integrally formed with operation button 15
7 is inserted into the connecting hole 36 of the lock plate 12, and is fixed to the lock plate 12 by caulking. The locking spring 24 is composed of a compression coil spring and is inserted into the central receiving hole 20 of the bearing seat 19. The locking recess 22 of the lock plate 12 is formed in the guide groove 2
As in the case of No. 3, it is formed to be long in the transverse direction, and the sliding allowance of the lock plate 12 is set. The lock plate 12 is arranged near the piece plate 7 at the end of the abdominal plate 2a. Lock receiving hole 1
3 is provided on the end face plate portion 2b opposite to the end face plate portion 2b provided with the second slot 10.

A cam projection 37 is provided inwardly on the end face plate portion 2b of the second arm 2 in the vicinity of the lock receiving hole 13. As shown in FIG. 18, the cam projection 37 abuts the cam slope 26 of the lock plate 12 during the sliding operation in the shortening direction.
The lock end 12a of the lock plate 12 is attached to the end of the second arm 2.
The lock plate 12 is made to escape from the lock receiving hole 13 of the face plate portion 2b.
Standby when the lock end 12a is completely separated from the end face plate 2b
Push up to the position. A spring washer 3 is attached to the pivot 11 of the piece plate 7.
8 is fitted to prevent the piece plate 7 from freely rotating. The tip of the small diameter shaft portion 21b of the locking shaft 21 is formed in a hemispherical shape.

[0019]

As described above, in the piece plate locking type stay device of the present invention, when the wing body 6 is opened and rotated, the locking end portion 1 of the lock plate 12 slidable in the transverse direction of the first arm 1 is obtained.
2a automatically engages with the locking hole 13 in the transverse direction of the end face plate portion 2b of the second arm 2, and this engagement state is the locking spring 14
The second arm 2 does not move in either the extension direction or the contraction direction even if the wing body 6 is swung by strong wind, and the locking piece plate 7 is clawed. The plate 9 does not rotate in the unlocking direction. Therefore, the wing body 6 is accurately stopped and held in the open position,
Since there is no accidental closing operation of the wing body 6 due to strong wind or vibration, it is excellent in safety.

In the piece plate locking stay device according to the first aspect of the present invention, when the wing body 6 is closed, the lock end 12a of the lock plate 12 is pressed by the operation button 15 to the lock receiving hole 13 of the second arm 2.
When the lock shaft 21 is removed from the lock shaft 21, the large-diameter shaft portion 21a of the lock shaft 21 immediately engages with the lock recess 22 of the lock plate 12 by the biasing force of the lock spring 24. Also, the lock plate 12 is accurately restrained in the unlocked position, and when the second arm 2 is once extended, the lock end 12a does not reengage with the lock receiving hole 13. And the second arm 2
When sliding in the direction of shortening, the small-diameter shaft portion 21b in the escape recess 25 of the second arm 2 is pushed by the abdominal surface plate portion 2a adjacent to the escape recess 25 and moves in the guide groove hole 23 of the lock plate 12. Since the large-diameter shaft portion 21a slides backward and comes out of the locking recess 22, the lock plate 12 can slide in the transverse direction. At this time, the lock end 12a is temporarily re-engaged with the lock receiving hole 13, but is immediately released from the lock receiving hole 13 by the action of the cam slope 26 that is in sliding contact with the hole edge 13a, and the lock plate 12 is released.
Returns to the standby position where it slidably contacts the end plate 2b of the second arm 2. That is, despite the presence of the lock plate 12, the unlocking and closing operations of the wing body 6 can be smoothly performed by a series of operations without any interruption or additional operation, and the operability is excellent. A stay device is obtained.

[Brief description of drawings]

FIG. 1 is a front view of a piece plate locking stay device according to an embodiment of the present invention in use.

FIG. 2 is a front view of the stay device in a shortened state.

FIG. 3 is a rear view of the stay device in a shortened state.

FIG. 4 is a plan view of the stay device in a shortened state.

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

6 is a cross-sectional view taken along the line BB of FIG.

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

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

9 is a cross-sectional view taken along the line EE of FIG.

FIG. 10 is a cross-sectional view of an essential part on the verge of extending the second arm and rotating the piece plate in the locking direction.

FIG. 11 is a cross-sectional view of essential parts when the second arm is slid in a slightly shortened direction and locking by the piece plate is established.

12 is a sectional view taken along line FF of FIG.

FIG. 13 is a cross-sectional view of essential parts when the operation button is slid in the unlocking direction.

14 is a sectional view taken along line GG of FIG.

15 is a cross-sectional view taken along line HH of FIG.

FIG. 16 is a sectional view of an essential part when the second arm is once slid in the extension direction.

FIG. 17 is a cross-sectional view of an essential part when the second arm is slid in the shortening direction.

FIG. 18 is a cross-sectional view of an essential part when the second arm is slid further in the shortening direction.

FIG. 19 is a sectional view of an essential part of a piece plate locking stay device according to another embodiment of the present invention.

20 is an exploded perspective view of a mechanism portion for urging the lock plate of the piece plate locking stay device shown in FIG. 1 in the locking direction.

[Explanation of symbols]

 1 1st arm 1a Ventral plate part 1b End face part 2 2nd arm 2a Ventral plate part 2b End face part 3 Bracket 4 Fixed frame 5 Bracket 6 Wing body 7 Piece plate 8 1st slot 9 Claw plate 10 2nd slot 10a Edge part 10b edge 11 pivot 12 lock plate 12a lock end 13 lock receiving hole 13a hole edge 14 lock spring 15 operation button 16 guide long hole 17 connecting leg 18 through hole 19 bearing seat 20 center receiving hole 21 locking Shaft 21a Large-diameter shaft portion 21b Small-diameter shaft portion 22 Locking recess 23 Guide groove hole 24 Locking spring 25 Relief recess 26 Cam slope 27 Pivot 28 Pivot 29 Hinge shaft 31 Maximum extension position

Claims (2)

[Scope of utility model registration request] 1. A fixed frame 4 is provided on one end side of the first arm 1.
Alternatively, the first arm 1 is pivotally attached to the wing body 6 and one end side of the second arm 2 is pivotally attached to the wing body 6 or the fixed frame 4.
The second arm 2 is slidably inserted in the longitudinal direction, and the piece plate 7 is pivotally attached to the abdominal plate portion 1a at the other end side of the first arm 1.
The first slot 8 into which the corners of the piece plate 7 come in and go out is provided in the end face plate portion 1b perpendicular to the abdominal face plate portion 1a, and the other end side of the second arm 2 is clawed in the abdominal face plate portion 2a. The second slot 1 into which the plate 9 is fixed and the corners of the piece plate 7 come in and out.
0 is provided in the end face plate portion 2b perpendicular to the abdominal face plate portion 2a, and the piece plate 7 is rotated by the claw plate 9 when the wing body 6 is opened, so that the corner portion of the piece plate 7 is separated from the second slot 10 and the first slot 8. While projecting and locking the second arm 2 so as not to be slidable in the shortening direction, when the wing body 6 is closed, the second arm 2 is once slid in the extending direction and the piece plate 7 is further rotated by the pawl plate 9. A piece plate locking stay device for releasing the locking of the second arm 2 by the piece plate 7 by making the lock plate 1 on the rear surface side of the abdominal plate portion 1a of the first arm 1.
2 is movably arranged in the transverse direction, a lock receiving hole 13 for engaging and disengaging the lock end 12a of the lock plate 12 is provided in the end face plate portion 2b of the second arm 2 in the transverse direction, and a lock spring 14 is provided. A piece plate locking type stay device in which the lock plate 12 is slidably biased toward the end face plate portion 2b by the above. 2. An operation button 15 is arranged on the front surface side of the abdominal surface plate portion 1a of the first arm 1, and the operation button 15 is provided on the abdominal surface plate portion 1a.
a is fixed to the lock plate 12 by the connecting leg 17 inserted into the guide elongated hole 16 in the transverse direction of a, and the bearing seat 19 is fitted and fixed in the through hole 18 of the abdominal plate portion 1a. The stepped locking shaft 21 is inserted into the hole 20, the large diameter shaft portion 21a of the locking shaft 21 is engaged with and disengaged from the locking recess 22 on the front surface side of the lock plate 12, and the small diameter shaft portion 21b of the locking shaft 21 is removed. The lock shaft 12 is fitted into the guide groove hole 23 in the transverse direction, and the locking shaft 21 is slidably biased toward the lock plate 12 by the locking spring 24 so that the large-diameter shaft portion 21a of the locking shaft 21 is engaged. A relief recess 25 into which the tip of the small-diameter shaft portion 21b enters when engaged with the stop recess 22 is provided in the abdominal surface plate portion 2a of the second arm 2, and the small-diameter shaft portion 21b causes the abdominal surface plate between the escape concave portion 25 and the claw plate 9. The length of the locking shaft 21 is adjusted so that the large-diameter shaft portion 21a is released from the locking recess 22 when pushed by the portion 2a. Constant, and locking end 12 of the lock 12
The cam slope 2 that is in sliding contact with the hole edge portion 13a of the lock receiving hole 13
The piece plate locking type stay device according to claim 1, wherein 6 is provided on the side opposite to the claw plate 9.