JPH0625437Y2 - Automatic locking device for tilting handrails - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a locking device for fixing a tilting handrail provided in a helicopter loading / unloading deck of a ship, for example, to a predetermined position.

(Prior art) In order to receive the reaction force of the lift generated by the rotating rotor of the helicopter on the helicopter loading / unloading deck of a ship, by mounting an aluminum panel on the handrail surrounding the deck and lying down horizontally with the handrail. , There is one that expands the real area of the deck.

Such a tilting type handrail is held at the standing position by a locking device as shown in FIG. 5, for example, except when the helicopter is arriving and departing. That is, the movable notch 31 that extends and contracts downwardly protrudes from the bracket 30 integrated with the handrail post 1.
Is engaged with a fixed notch 32 fixed upward to the helicopter deck 4, and the movable notch 31 is urged in a protruding direction by a spring 33 interposed between the movable notch 31 and the bracket 30 so that By the rotation to the upright position, the movable notch 31 abutting against the fixed notch 32 contracts against the spring 33 and moves over the fixed notch 32, whereby the locking operation is automatically performed.

(Problem of the Invention) However, in the case of this automatic locking device, the movable notch 31 is fixed by the external force acting on the handrail post 1.
There was a risk that the lock would be released if you overcame 2 and unintentionally.

The present invention has been made in view of the above problems, and an object thereof is to provide an automatic locking device capable of reliably holding a handrail at a predetermined position against the action of an external force.

(Means for Achieving the Object) According to the present invention, a locking hole formed laterally in a tilting handrail that pivots with a base end as a fulcrum, and this locking at a predetermined pivot position of the handrail. A lock pin that is inserted into the hole, a spring that biases the lock pin in the insertion direction, a holding member that holds the lock pin in the non-insertion position, and a holding member that holds the lock pin when pressed by the rotating handrail. And a release lever for releasing.

(Operation) When the handrail rotated to a predetermined position presses the release lever to release the holding of the lock pin by the holding member, the lock pin is biased by the spring and enters the locking hole formed in the handrail. To do. After that, the handrail is strongly supported in this lock position by the shear resistance of the lock pin.

(Embodiment) FIGS. 1 to 4 show an embodiment of the present invention.

In FIG. 1, reference numeral 5 is a support member for supporting a tilting handrail, which is arranged along the outer edge of the helicopter deck 4 of the ship shown in FIG. Support 2.

As shown in FIG. 4, the supporting member 5 is bent into a substantially L shape, and the handrail post 1 is integrally attached to the upper end of the supporting member 5 via an emergency raising / lowering member 6. Further, the other end of the support member 5 is rotatably coupled with a bracket 7 fixed to the back surface of the helicopter deck 4 via a hinge 8. The emergency raising / lowering member 6 is a member for lowering only the handrail pillar 1 with respect to the support member 5 in the upright state, and is joined to the lower end of the handrail pillar 1 at the hinge 28.
Furthermore, the pin 29 which can be removed is connected to the handrail pillar 1 above it. Reference numeral 22 is a support portion of an aluminum panel attached to the handrail 2.

On the back surface of the helicopter deck 4, a torque actuator 10 for rotating the support member 5 together with the handrail pillar 1 around a hinge 8 is supported via a mount 9. Also,
Stoppers 11 and 12 for restricting the handrail pillar 1 from rotating beyond a horizontal position due to mutual contact are fixedly mounted on the supporting member 5 and the bracket 7, which rotate relative to each other.

A mount 13 is formed at the upper end of the support member 5 so as to project to the helicopter deck 4 side at the standing position, and a locking hole 14 penetrating laterally is formed in the mount 13.

On the other hand, the helicopter deck 4 is provided with fixed parallel guides 15 on both sides of the mount 13, as shown in FIG. Through holes 16 are formed at positions corresponding to the locking holes 14 of the guide 15, and the through holes 16 and the locking holes 14 are provided in a cylindrical casing 17 integrally formed outside the guide 15. The lock pin 18 penetrating therethrough is accommodated. As shown in FIG. 2, the lock pin 18 has a through hole 1 by a spring 19 housed inside the casing 17.
It is urged toward 6. Further, an operating lever 21 protruding upward is attached to the lock pin 18, and as shown in FIG. 1, the axial portion 2 for guiding the operating lever 21 in the axial direction.
The casing 17 is formed with an L-shaped slide groove 20 which is composed of 0A and a circumferential portion 20B that guides in the circumferential direction.

Further, a circumferential groove of a certain length is formed at a predetermined position on the side surface of the lock pin 18 inside the casing, and the tip of the lock pin 18 is engaged with this groove at the retracted position. The biased holding member 24 is slidably accommodated inside a tubular member 25 that projects laterally from the casing 17. The rear end of the holding member 24 projects in the axial direction from the tubular member 25, and the base end is hinged to the middle of the release lever 27 supported by the helicopter deck 4 via the bracket 26 so as to be horizontally rotatable. The tip of the release lever 27 is bent in an L-shape and enters the mount 13 between the guides 15 described above.

Next, the operation will be described.

In the upright state shown in FIG. 4, the mount 13 is located inside the guide 15 as shown in FIG. 1, and the tip of the release lever 27 which opposes is pressed to lock the holding member 24 to the lock pin 18.
It is held in a retracted position from. Also, lock pin 1
8 penetrates the locking hole 14 and the through hole 16. In this state, since the turning force applied to the handrail 2 and the handrail column 1 is supported by the shear resistance of the lock pin 18, the handrail 2 is not likely to rotate due to the action of an external force.

When you want to tilt the handrail 2, move the operating lever 21 to the slide groove 2.
It is moved to the right in FIG. 1 along the axial direction portion 20A of 0 and pushed into the circumferential direction portion 20B. As a result, the lock pin 18 is held in the retracted position from the locking hole 14, and the handrail post 1
The rotation lock is released. If the torque actuator 10 is driven in this state, the support member 5 and the handrail post 1
Rotates to the horizontal position where the stoppers 11 and 12 come into contact,
The handrail 2 falls over to the outside of the helicopter deck 4. The helicopter takes off and landes with an aluminum panel attached to the handrail 2 and thus lying down.

On the other hand, since the mount 13 that pressed the release lever 27 also rotates as the handrail post 1 rotates, the release lever 27
The holding member 24 connected to is urged by the spring 23 so that the tip of the holding member 24 enters the groove formed in the lock pin 18 in the casing 17. Along with this, the release lever 27 is rotationally displaced to the position of the chain line in FIG.
The tip is inserted between the guides 15. Since the groove of the lock pin 18 extends over a certain length in the circumferential direction, the holding member 24 is connected to this groove and the operating lever 21 is operated along the circumferential portion 20B of the slide groove 20. can do.

When the handrail 2 which has fallen to the horizontal position is rotated to the standing position, the operation lever 27 is moved in advance along the circumferential direction portion 20B and moved to the bending portion with the axial direction portion 20A. Since the holding member 24 is still engaged with the groove of the lock pin 18, the lock pin 18 is held in the retracted position as it is.

In this state, when the torque actuator 10 is driven in the opposite direction, the bracket 5 and the handrail post 1 and the handrail 2 that have fallen down rotate integrally in the standing direction with the hinge 8 as a fulcrum. Then, at the final stage of this rotation, the mount 13 enters between the guides 15 and presses the tip of the release lever 27. As a result, the release lever 27 rotates about the bracket 26 as a fulcrum, and the holding member 24 connected to the release lever 27 withdraws the tip end from the groove of the lock pin 18 to the inside of the tubular member 25 against the spring 23. 18 is released. Therefore, the lock pin 18 has the spring 19
When the handrail column 1 is erected, it is automatically locked after the handrail column 1 is erected by moving forward through the through hole 16 of the guide 15 and the locking hole 14 of the mount 13. Further, with the displacement of the lock pin 18, the operation lever 21 moves toward the guide 15 inside the axial member 20A of the slide hole 20.

Since this locking device has no members that friction with each other during the locking operation and the unlocking operation, there is no risk that the members will wear due to repeated up and down operations of the handrail 2.

(Effects of the Invention) As described above, the locking device of the present invention includes the lock pin that is pushed into the locking hole formed in the tilting handrail by the spring and the holding member that holds the lock pin in the non-insertion position. And a release lever that is pressed by the rotating handrail to release this holding, so that when the handrail is rotated to a predetermined position, the lock pin urged by the spring enters the locking hole formed in the handrail. To do. Therefore, the handrail is automatically locked at a predetermined rotation position and is supported by a strong supporting force based on the shear resistance of the lock pin. Further, since no friction member is used, there is no fear of wear of the member due to repeated locking and releasing operations.

Therefore, according to the present invention, the locking reliability and durability of the automatic locking device can be improved.

[Brief description of drawings]

1 to 4 show an embodiment of the present invention. FIG. 1 is a plan view including a partial cross section of a locking device, FIG. 2 is a longitudinal sectional view of the same, and FIG. FIG. 4 is a side view of the tilting handrail and the drive unit. FIG. 5 is a side view of a lock device showing a conventional example. DESCRIPTION OF SYMBOLS 1 ... Handrail pillar, 5 ... Support member, 13 ... Mount, 14 ... Locking hole, 15 ... Guide, 18 ... Lock pin, 19, 23 ...
Spring, 21 ... Operating lever, 24 ... Holding member, 27
… Release lever.

Claims (1)

[Scope of utility model registration request] 1. A locking hole formed laterally in a tilting handrail that rotates about a base end as a fulcrum, and a lock pin inserted into the locking hole at a predetermined rotation position of the handrail. A spring for urging the lock pin in the insertion direction, a holding member for holding the lock pin at the non-insertion position, and a release lever for pressing the rotating handrail to release the holding of the lock pin by the holding member are provided. Automatic locking device for tilting handrails.