JPH0534272U - Piece board locking type stay device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a piece plate locking type stay device in which the wing body cannot be accidentally closed even if it is fanned by wind. Constitution: When the wing body 6 is opened, the locking end portion 12a of the lock plate 12 of the first arm 1 is automatically engaged with the transverse locking hole 13 of the end face plate portion 2b of the second arm 2. Then, this engagement state is maintained by the biasing of the spring 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a stay device that holds and holds a wing body such as a door or a lid of a switchboard storage box at a predetermined open position.

[0002]

[Prior Art]

 As disclosed in Japanese Utility Model Laid-Open No. 63-143663, the piece plate locking stay device has one end of a first arm pivotally attached to a fixed frame and one end of a second arm pivotally attached to a wing body. The second arm is slidably inserted into the first arm in the lengthwise direction, and the piece plate is pivotally attached to the abdominal plate portion on the other end side of the first arm so that the first slot through which the corner portion of the piece plate comes in and goes out. A claw plate is provided on the end face plate portion, and a claw plate is fixed to the abdominal face plate portion on the other end side of the second arm, and a second slot through which the corner portion of the piece plate goes in and out is provided on the end face plate portion, and when the wing body is opened By rotating the bridge plate with the plate, the corners of the bridge plate are projected from the second slot and the first slot to lock the second arm in a non-sliding manner in the shortening direction, while the second arm is closed when the wing body is closed. By sliding the arm once in the extension direction and rotating the piece plate with the claw plate, Releasing the locking of the second arm.

In the piece plate locking type stay device adopting such an operation principle, in order to unlock the second arm by the piece plate, the second arm is slightly slid in the extension direction, In other words, the wing body must be rotated slightly in the opening direction, but when the wing body swung by strong wind swung to such an extent that the unlocking rotation angle is reached, it is against the user's intention. There is a risk that the wing body will be unlocked and closed.

[0004]

[Problems to be solved by the device]

 SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a piece plate locking type stay device in which the wing body cannot be accidentally closed even if it is winded.

[0005]

[Means for Solving the Problems]

 In the stay device of the present invention, one end side of a first arm 1 is pivotally attached to a fixed frame 4 or a wing body 6, and one end side of a second arm 2 is a wing. The second arm 2 is pivotally attached to the body 6 or the fixed frame 4, and the second arm 2 is slidably inserted into the first arm 1 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 shaft 11, and a first slot 8 through which a corner portion of the piece plate 7 comes in and out is provided at an end surface plate portion 1b perpendicular to the abdominal surface plate portion 1a. Set up in. 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 of the piece plate 7 comes 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 and the claw plate 9 is further rotated by the claw plate 9, whereby the locking of the second arm 2 by the piece plate 7 is released. The 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 the locking end portion 12a of the lock plate 12 is disengaged from the 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 slides and urges the lock plate 12 toward the end face plate portion 2b.

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 into the transverse guide slot 16 of the abdominal surface plate portion 1a. It is fixed to the lock plate 12 with the ligature 17, the bearing seat 19 is fitted and fixed in the through hole 18 of the abdominal plate portion 1a, and the stepped locking shaft 21 is fitted and inserted in 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 disengaged from the locking recess 22 on the front side of the lock plate 12, and the small-diameter shaft portion 21b of the locking shaft 21 is guided in the guide groove hole 23 in the transverse direction of the lock plate 12. Insert into.

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

[0009]

[Action]

 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 contacts the end face plate 2b of the second arm 2. It is in the prone position where it touched. 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 lock end 12a of the lock plate 12 and the second arm 2 are separated from each other. A slight gap is left between the end face plate portion 2b and the end face plate portion 2b. As shown in FIG. 9, the small diameter shaft portion 21b 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 rotates in the open direction, the claw plate 9 comes into contact with the corner portion 7d of the piece plate 7 as shown in FIG. When the second arm 2 further slides in the extension direction, the piece plate 9 pushed by the claw plate 9 rotates counterclockwise in FIG. 10 about the pivot 11, and the corner 7b and the second slot 10 and the second slot 10. 1 It projects from the slot 8 to the outside. 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 edge of the second slot 10 is moved as shown in FIG. Since the part 10a pushes the corner 7b, the piece plate 7 is further rotated counterclockwise, and the corner 7c abuts the end face plate 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.

Further, 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 abuts the small diameter shaft portion 21b of the locking shaft 21 to move the small diameter shaft portion 21b. The large diameter shaft portion 21 a is disengaged from the locking recessed portion 22 of the lock plate 12 because it is made to escape from the escape recessed portion 25 and the entire length is immersed in the guide groove hole 23 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 slightly in the direction of shortening as described above, the lock plate 12 slidably contacting the end face plate portion 2b has the lock end 12a 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 in 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 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. Re-engage with the locking recess 22 of. Since this engaged state is held by the biasing force of the locking spring 24, re-engagement of the lock end 12a of the lock plate 12 and 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 in the counterclockwise direction, and the corner portions 7b and 7c become the second slot 10 and the second slot 10. The piece plate 7 projects from the first slot 8 and abuts on the opposite edge 10 b of the second slot 10. At the time of extension to this 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 escapes from the locking recess 22. Therefore, the lock end 12a of the lock plate 12 biased by the lock spring 14 contacts the end plate 2b as shown in FIG.

When the wing body 6 is closed and rotated and the second arm 2 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. The corner portion 7b first immerses inside the second arm 2 and the corner portion 7c follows. When the second arm 2 continues to slide in the contracting direction, the corner 7c pushed back inside the second arm 2 slides against the end face plate 2b and returns to the original position shown in FIG. Return. However, the arrangement of the corners of the piece plate 7 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, and the bracket 3 is connected to one end of the first arm 1 by a pivot 27. A bracket 5 is connected to one end of the two arms 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 further opened to unlock the second arm 2. .. On the front surface of the operation button 15, an arrow 32 indicates the sliding direction when unlocked.

A spacer cylinder 33 is fitted and caulked and fixed to the front end cylinder portion of the bearing seat 19, and the bearing seat 19 is prevented from being pulled out from the through hole 18 by the rear end large diameter disc portion and the spacer cylinder 33. ing. On the back side of the operation button 15, an escape hollow portion 34 of the spacer cylinder 33 is provided in an oval shape in the transverse direction, and at one end of the hollow portion 34, a recess 35 for accommodating the locking spring 14 is provided. ing. One end of the locking spring 14 composed of a compression coil spring is in pressure contact with the spacer cylinder 33. As shown in FIG. 19, the locking spring 14 may be composed of a torsion bar, the coil portion of the torsion spring is fitted in the bearing seat 19, and the linear end portions 14a and 14b are pressed against the connecting leg 17. ing.

The connecting leg 17 integrally formed with the operation button 15 is fitted 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 to be long in the transverse direction similarly to the guide groove 23, 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. The lock receiving hole 13 is provided in the end face plate portion 2b opposite to the end face plate portion 2b provided with the second slot 10.

A cam protrusion 37 is provided inwardly on the end face plate portion 2 b of the second arm 2 in the vicinity of the lock receiving hole 13. As shown in FIG. 18, the cam projection 37 cooperates with the cam slope 26 of the lock plate 12 during the sliding motion in the shortening direction to push the lock plate 12 up to the standby position and to end the lock end 12a. It is completely separated from the face plate portion 2b. A spring washer 38 is fitted on the pivot 11 of the piece plate 7 to prevent free rotation of the piece plate 7. The tip of the small-diameter shaft portion 21b of the locking shaft 21 is formed in a hemispherical shape.

[0019]

[Effect of the device]

 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 12a of the lock plate 12 slidable in the transverse direction of the first arm 1 has the second arm 2 Since the end face plate portion 2b is automatically engaged with the lock hole 13 in the transverse direction, and the engaged state is accurately maintained by the sliding bias of the lock spring 14, the wing body 6 is exposed to strong wind. Even if the second arm 2 is swung, the second arm 2 does not move in either the extension direction or the contraction direction, and the locking piece plate 7 is not rotated by the claw plate 9 in the unlocking direction. Therefore, the wing body 6 is accurately stopped and held in the open position, and there is no accidental closing operation of the wing body 6 due to strong wind or vibration, which is excellent in safety.

In the piece plate locking stay device according to the first aspect, when the wing body 6 is closed, the locking end 12 a of the lock plate 12 is released from the locking receiving hole 13 of the second arm 2 by the operation button 15. At this time, the large-diameter shaft portion 21a of the locking shaft 21 immediately engages with the locking recess 22 of the lock plate 12 by the biasing force of the locking spring 24. 12 is properly restrained in the unlocked position, and when the second arm 2 is once extended, the lock end 12a does not re-engage with the lock receiving hole 13. When the second arm 2 is slid in the shortening direction, 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 the lock plate 12 moves. As the large-diameter shaft portion 21a moves out of the locking recess 22 by sliding backward in the inner groove 23, 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 slidingly contacting the hole edge 13a, and the lock plate is released. 12 returns to the standby position where it slidably contacts the end face plate portion 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 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 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.

[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 Central 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 surface plate portion 1a at the other end side of the first arm 1.
The end plate 1b perpendicular to the abdominal plate 1a is provided with a first slot 8 through which the corners of the piece plate 7 come in and go out, and the other end of the second arm 2 has a claw on the abdominal plate 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 on 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 to lock the second arm 2 slidably in the shortening direction, when the wing body 6 is closed, the second arm 2 is slid once in the extending direction and the piece plate 7 is further rotated by the pawl plate 9. A piece plate locking type stay device in which the locking of the second arm 2 by the piece plate 7 is released 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, and 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. A piece plate locking type stay device in which the lock plate 12 is slidably urged toward the end face plate portion 2b by means of. 2. The operation button 15 is arranged on the front 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 with the connecting leg 17 fitted in 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 fixed. The lock shaft 12 is fitted in 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 is provided 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 slidably contacts 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.