JP2001112877A - Hooking fitment for hooking at height - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hooking fitment for hooking at height by which a perfect hooking and hanging condition can be always ensured with excellent safety. SOLUTION: An open-sided wing 8 for opening/closing the opening of a hooking part 2 of an apex is freely slidably fitted on a hook body. A long hole 14 for guiding is formed on one end of a pair of side plates 9 provided on the open-sided wing 8. A hooking pin 20 being hookable on a hooking projection 21 provided on the outside edge 15 of a hooking body 1 is provided on one end of an auxiliary wing 16 being freely rocakbly combined between a pair of side plates 9. A long hole 22 for holding wherein the end part of one inside edge 22a faces in the long hole 14 for guiding is formed on another end part of the auxiliary wing 16. A horizontal lever part 32a of a second hook 32 provided on the apex of an operating rod 30 is inserted into the long hole 14 for guiding to rock the auxiliary wing 16 in the direction where the hooking pin 20 is separated from the hooking projection 21 and to rock the auxiliary wing 16 in the opening direction and, only when the above open-sided wing 8 is under completely closed condition, the horizontal lever part 32a can be pulled out from the opening of the long hole 14 for guiding to improve safety.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hook fitting for holding at a high place, which is used when an emergency lock type winder for winding a safety belt is hung at a high place by an operation from the ground.

[0002]

2. Description of the Related Art Generally, like work on a pole at a distribution pole,
When working at high altitude, suspend the emergency lock type winder at a high altitude to ensure the safety of the worker when going up and down.
It has been practiced to connect the hook at the tip of the safety belt wound around the winder to a safety belt for working at a high place wound around the waist of the worker to prevent the fall of the worker.

Here, the emergency lock type winder winds up the safety belt, locks the reel for winding up the belt in response to sudden withdrawal of the safety belt, and prevents the safety belt from being pulled out. It has become.

When the above-described emergency lock type winder is hung at a high place by operation from the ground, a hook fitting for holding at a high place is used.

As such a hook fitting for hanging at a high place,
For example, one described in Japanese Patent Application Laid-Open No. 8-332241 is conventionally known.

In the above-mentioned hook fitting for hanging at a high place, a connecting bar is connected to a swingable opening / closing plate which opens and closes a hook portion of a hook body, and a hanging ring portion is provided at an end of the connecting bar. The open / close plate is opened by engaging the hook provided at the tip of the telescopic rod, and the hook body is engaged with the hook member at a high place by operating the telescopic rod from the ground. The engagement between the hook portion and the suspension ring portion is released, and the opening / closing plate is rotated in a direction to close the hook portion of the hook body by the elasticity of the spring.

[0007]

By the way, in the above-mentioned hook fitting for hanging at a high place, even when the hook portion of the hook body is incompletely engaged with the hook member, the hook portion of the telescopic rod and the hanging ring portion can be engaged. When the hook body is incompletely engaged, the opening / closing plate may be held open by contact with the hook member, which poses a safety problem.

An object of the present invention is to provide a hook fitting for hanging at a high place which is excellent in safety and can always ensure a complete engagement state.

[0009]

In order to solve the above-mentioned problems, according to the present invention, a hook body having a hook at a front end and a connecting hole at a rear end is provided on one side of the hook body. The one-sided wing for opening and closing the opening of the hook is swingably mounted, and the one-sided wing is provided with elastic means for biasing the one-sided wing in a direction to close the opening of the hook, and is formed on the one-sided wing. At a rear end of the pair of side plates projecting outward from an outer edge of the hook body, a guiding slot having an end opening inclined with respect to the outer edge of the hook body is formed, and a rear end of the pair of side plates is formed. Auxiliary wings are assembled between the parts and swingably supported, and the one-sided wing is held in a closed state by engaging one end of the auxiliary wing with an engaging projection formed on an outer edge of the hook body. An engaging pin is provided, and elastic means for urging the auxiliary wing in a direction in which the engaging pin engages with the engaging projection is provided. The other end of the aileron is inclined with respect to the guiding slot, and an end of one inner edge forms a holding slot of an end opening facing the end of the guiding slot. It was adopted.

[0010] When the hook fitting for holding a high place having the above-mentioned structure is engaged with a hook member at a high place, an operating rod is used.
In this case, the operation rod is provided with a hook having a horizontal rod portion.

When the horizontal rod provided on the hook of the operating rod is inserted into the guide slot formed in the one-sided wing, the engagement pin is assisted in the direction away from the engagement projection by pressing the horizontal rod. The wing swings, and then the one-wing wing swings to open the hook of the hook body. At this time, the holding slot formed in the auxiliary wing obliquely intersects with the guiding slot formed in the one-sided wing, and the horizontal rod portion provided on the hook of the operation rod at the intersection of both holes. Are arranged, and a hook fitting for hanging at a high place is supported by the horizontal rod portion.

In a state in which the hook fitting is supported, the hook portion of the hook body is engaged with a high-level latch member by operating the operating rod and the operating rod is pulled down. As a result, the opening of the hook portion of the hook body is closed, and the auxiliary wing swings to engage the engaging pin at one end with the engaging projection.

When the operating rod is pulled down, if the one-sided wing is halfway closed by abutting against the locking member, the one-sided wing is provided on the guiding slot and the auxiliary wing. The holding long hole is kept oblique, the horizontal rod at the tip of the operating rod cannot be pulled out from both holes, and the horizontal rod is only used when one open wing completely closes the hook of the hook body. The part can be withdrawn from both holes. For this reason, a complete engagement state can always be ensured.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the hook body 1 has a hook portion 2 at a front end and a connection hole 3 at a rear end.

An emergency lock type winder 5 is connected to the connection hole 3 via a carabiner 4. As described in JP-A-8-332241, the emergency lock type winder 5 winds a safety belt 6 around a built-in reel, and when the safety belt 6 is suddenly pulled out, the belt is retracted. The safety belt 6 is stopped by pulling out the safety belt 6 by locking the reel for winding the safety belt 6. The tip of the safety belt 6 is connected to a safety belt for working at height wound around the waist of the worker. Hook 7 with a safety device is attached.

As shown in FIGS. 2 and 3, below the hook 2 of the hook body 1, a single-open wing 8 for opening and closing the opening of the hook 2 is provided.

The single open wing 8 has a pair of side plates 9, and the rear end of the side plates 9 is rotatably connected to the hook body 1 via pins 10. A kick spring 11 as an elastic means is supported on the pin 10, and the single spring 8 is urged by the kick spring 11 in a direction to close the opening of the hook portion 2, and is provided between the tip portions of the pair of side plates 9. The stopper pin 12 is pressed against a notch 13 formed at the tip of the hook 2.

The rear ends of the pair of side plates 9 of the one-sided wing 8 protrude outward from the outer edge of the hook body 1, and the protruding portion 9 a is formed with a guiding long hole 14. The guiding slot 14 is open at the lower part of the outer periphery of the overhang portion 9a, and one inner edge 14a is inclined with respect to the outer edge 15 of the hook body 1 in a state where the single open wing 8 closes the opening of the hook 2. hand,
Its end faces the outer edge 15.

An auxiliary wing 16 is incorporated between the overhang portions 9a of the pair of side plates 9. The auxiliary wing 16 is a pair of side plates 1.
The center portions of the pair of side plates 17 are rotatably supported by pins 18, and can swing about the pins 18.

The pin 18 supports a kick spring 19 as an elastic means. The kick spring 19 includes a pair of side plates 1.
7, an engaging pin 20 provided between one end of the hook body 1
The auxiliary wing 16 is urged in a direction to engage with the lower edge of the engagement protrusion 21 formed on the outer edge 15 of the engagement protrusion 21.
The single open wing 8 is locked in a closed state by the engagement of the engagement pin 20 with the open wing 8.

A long slot 22 for holding is formed at the other end of the pair of side plates 17 in the auxiliary wing 16. Slot 2 for holding
2 is opened at one side edge of the pair of side plates 17. The holding slot 22 extends in a direction inclined with respect to the guiding slot 14 formed in the one-sided wing 8 in a state where the engagement pin 20 of the auxiliary wing 16 is engaged with the engagement projection 21. Inside edge 22a
End faces inside the guiding long hole 22.

The hook fitting for holding at a high place shown in the embodiment has the above structure, and FIG. 5 shows an operating rod 30 used when the hook fitting is engaged with a hook member at a high place.

Although not shown in detail, the operating rod 30 is extendable and contractible, and a first hook 31 formed by bending a shaft is attached to a tip of the operating rod 30.
Is fixed to the second hook 32.

The second hook 32 is provided with a pair of side rods 32b having a U-shaped side surface at both ends of a horizontal rod 32a, and the end of each side rod 32b is connected to the first hook 31 by welding or the like. It is fixed by means.

Now, the second operation rod 30
The horizontal rod portion 32a of the hook 32 is connected to the outer edge 1 of the hook body 1.
5, the horizontal rod portion 32 a is guided by one inner edge 14 a of the guide slot 14 and enters the guide slot 14, and the holding slot formed in the auxiliary wing 16. 2
One of the two inner edges 22a is pressed by the horizontal rod portion 32a.

For this reason, the auxiliary wing 16 swings about the pin 18 in a direction in which the engaging pin 20 is separated from the engaging projection 21. Here, when the pin 23 is provided at the other end of the auxiliary wing 16 as shown in FIG. 2, the auxiliary wing 16 swings to a position where the pin 23 contacts the outer edge 15 of the hook body 1. After the stop, by pressing the horizontal rod portion 32a,
The one open wing 8 swings about the pin 10 to open the opening of the hook 2 of the hook body 1.

When the pin 23 is not provided at the other end of the auxiliary wing 16, the horizontal rod portion 32a contacts the closed end of the guiding long hole 14, pushes up the closed end, and opens the single-open wing 8. Let it.

FIG. 6 shows a state in which the single-sided wing 8 is opened. With the opening of the single-sided wing 8, the guiding slot 14 and the holding slot 22 are obliquely intersected, and the two slots 14, 22 are oblique. The horizontal rod portion 32a of the second hook 32 is disposed at the intersection of the two, and the hook metal is held in a suspended state by the horizontal rod portion 32a.

At this time, since the lock type winder 7 is connected to the connection hole 3 of the hook body 1 via the carabiner 4, the single open blade 8 is in the open state by the weight of the lock type winder 7. Is held.

In order to engage the hook fitting with the hook member 40 shown in FIG. 6 provided at a high place, the operation rod is suspended while the hook fitting is suspended and supported by the horizontal rod portion 32a of the second hook 32. By operating the hook 30, the hook 2 of the hook body 1 is engaged with the hook member 40.

When the operation rod 30 is operated, the hook fitting is configured such that a part of the inner circumference of the guiding long hole 14 formed in the pair of side plates 9 of the one-sided wing 8 comes into contact with the horizontal rod portion 32 a of the second hook 32. Because of the hanging state of the point support, the hook fitting does not fluctuate, the direction of the hook 2 of the hook body 1 is kept constant, and the hook 2 can be easily engaged with the hooking member 40. .

As shown in FIG. 6, after the hook 2 of the hook main body 1 is engaged with the hook member 40, the operating rod 30 is pulled down, and the horizontal rod 32a of the second hook 32 becomes a single open wing 8. Single wing 8 to reduce the eccentric position of the
Swings in the direction to close the hook 2 opening of the hook body 1.

As shown in FIG. 7, when the one open wing 8 closes the opening of the hook 2, the engaging pin 20 at one end of the auxiliary wing 16 is engaged with the engaging projection formed on the outer edge 15 of the hook body 1. 21, and the auxiliary wing 16 is pressed by a kick spring 19.
2 swings in the direction in which the engagement pin 20 engages with the engagement protrusion 21 and returns to the state of FIG.
Escapes downward from the opening of the holding hole 22 formed in the auxiliary wing 16 and from the opening of the guiding long hole 14 provided in the one-sided wing 8, and the hook fitting is hung on the hooking member 40. You.

The hook portion 2 of the hook body 1 is connected to a high-
8 is an operation from the ground.
As shown in (1), there is a possibility that the hook member 40 may be erroneously engaged with the hook member 40 whose height is larger than the height of the opening of the hook portion 2.

In this case, when the operating rod 30 is lowered after the engagement of the hook 2, the one-sided open wing 8 swinging in the closing direction cannot come into contact with the hooking member 40 to be closed.

At this time, the guide slot 14 of the one-sided wing 8 and the holding slot 22 of the auxiliary wing 16 are held obliquely.
The horizontal rod portion 32a of the second hook 32 is held at the intersection of the two holes 14 and 22 and cannot be pulled downward, so that it can be seen that the one-sided wing 8 is open halfway.

When the above-described incomplete engagement occurs, the operation rod 30 is pushed up to release the engagement between the hook member 2 and the hook 2 of the hook body 1 and to re-attach the hook 2. To do.

As described above, when the one open wing 8 is in an incompletely closed state, the horizontal rod portion 32a of the second hook 32 is inserted into the guiding slot 1.
4, the horizontal rod portion 32a can be pulled out only in a state in which the one-sided wing 8 is completely closed, so that a complete engagement state of the hook metal can always be ensured. Thus, it is possible to provide a hook fitting for hanging at a high place which is excellent in safety.

When removing the hook fitting, the outer edge 15 of the hook body 1 is brought into contact with the horizontal rod portion 32a of the second hook 32 provided at the tip of the operating rod 30, and the outer edge 15 is horizontally moved along the outer edge 15. Move the rod portion 32a to open the single wing 8
Of the hook 2 is opened by swinging the auxiliary wing 16 and swinging the one-side open wing 8 by pushing up the horizontal rod portion 32a of the horizontal rod portion 32a. 32a
As a result, the hook metal is lifted above the hook member 40.

[0040]

As described above, according to the present invention, when the hook of the hook body is engaged with the locking member to lower the operating rod, the horizontal rod of the hook provided at the tip of the operating rod is Only in a state where the one-sided wing completely closes the hook portion of the hook body, it can be pulled down from the guiding long hole formed in the one-sided wing, so that a complete engagement state can always be secured, It is possible to provide a hook fitting for hanging at a high place which is excellent in safety.

In a state where the hook fitting is suspended and supported by the horizontal rod portion of the hook provided at the tip of the operating rod, a part of the inner periphery of the guiding long hole formed in the pair of side plates of the one-sided wing is formed as described above. Since the hook body is supported at two points by contact with the horizontal rod, the hook of the hook body is held in a fixed direction, and the hook of the hook body can be easily engaged with the hook member. it can.

[Brief description of the drawings]

FIG. 1 is a front view showing a connection state between a hook fitting and a winder according to the present invention.

FIG. 2 is a partially cutaway front view of the hook fitting shown in FIG. 1;

FIG. 3 is a side view of the hook fitting shown in FIG. 2;

FIG. 4 is an exploded perspective view of the hook fitting shown in FIG. 2;

FIG. 5 is a perspective view showing an operation rod for hanging operation of a hook fitting.

FIG. 6 is a front view showing a state where the hook fitting according to the present invention is being hung on a hanging member;

FIG. 7 is a partially cutaway side view showing a state in which the operation rod is being pulled down after hanging the hook fitting;

FIG. 8 is a front view showing a state where one open wing of the hook fitting is closed halfway;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hook main body 2 Hook part 8 One-sided wing 9 Side plate 11 Kick spring 14 Guide hole 14a Inner edge 15 Outer edge 16 Auxiliary wing 19 Kick spring 20 Engagement pin 21 Engagement protrusion 22 Retention elongate hole 22a Inner edge

Claims (1)

[Claims] A single open wing for opening and closing an opening of the hook portion is swingably attached to one side of a hook body having a hook portion at a front end and a connecting hole at a rear end portion. A rear end provided with elastic means for urging the one-sided wing in a direction in which the one-sided wing closes the opening of the hook portion, and a pair of side plates formed on the one-sided wing projecting outward from an outer edge of the hook body In the portion, a guide slot of an end opening inclined with respect to the outer edge of the hook body is formed, and an auxiliary wing is incorporated between the rear ends of the pair of side plates so as to be swingably supported, and the auxiliary An engagement pin is provided at one end of the wing to hold the one-sided wing closed by engagement with an engagement protrusion formed on the outer edge of the hook body, and the engagement pin engages with the engagement protrusion. Elastic means for urging the auxiliary wing in the direction in which it is inclined at the other end of the auxiliary wing with respect to the guiding slot, and A hook fitting for hooking at a high place, wherein a long hole for holding an end opening whose end portion faces the end of the long hole for guidance is formed.