JP2002345987A - Hook - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hook eliminating danger to injure a finger by contact with such as a single pipe, performing easily and safely a hooking/unhooking work and capable of connecting a lifeline easily and speedily. SOLUTION: This hook is composed of a main body 1 composed of a U-shaped hooking part 1a for hooking the matter such as single pipe. A grip part 1b is provided successively to a base end side 1a' and equipped with a connecting part for connecting the top of the lifeline. An opening part 1c opened between the grip part 1b and the top end of the U-shaped hooking part 1a. An opening/closing pole 2 is pivotally attached on the grip part 1b so as to be freely turned for opening/closing the opening part 1c, and is turned by pivotally attaching a freely turnable handle 4 on the grip part 1b. Turning this handle, the opening part 1c is opened/closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rope (wire, wire, etc.) that is attached to a body of a worker or a lifeline connected to a safety belt at a construction site and stretched between fixed objects such as a building frame. ) And rods used in temporary scaffolds (single tubes, etc.)
The present invention relates to a hook for hooking on a hooked body such as.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a hook of this type has a U-shaped hooking portion h1 and has a connecting hole K formed in connection with the hooking portion h1 and having a lifeline T attached thereto. Part h2 and an opening part h3 through which a body to be hooked such as a single pipe P passes.
, And an opening / closing rod R rotatably connected to the handle h2 to open and close the opening h3, thereby preventing a fall accident at a height work. .

[0003]

However, as is apparent from FIG. 7, the conventional hook has a structure in which the opening / closing rod R is directly gripped.
3, the finger F grasping the grip portion h2 obstructs the passage, so that it becomes difficult not only to prevent the finger F from being hung on a thick hook such as the single tube P, but also to remove the single tube. P is finger F
There is a problem that there is a danger of being damaged when hitting. In addition, since the connection hole K for attaching the lifeline T is a completely closed hole, the ice price t is formed by Satsuma knitting or the like after the tip of the lifeline T is passed through the connection hole. The connection of T was troublesome, and replacement of the rope was not easy. In particular, it has been desired to be able to easily and quickly replace a lifeline made of fiber which is heavily worn on metal parts such as hooks.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems and to meet the demands thereof. It is an object of the present invention to allow a finger to come into contact with an object to be hung such as a single tube and to be hurt. An object of the present invention is to provide a hook that can easily and safely carry out a latching / unlocking operation without fear and that can easily and quickly connect a lifeline.

[0005]

SUMMARY OF THE INVENTION A hook according to the present invention is provided on a U-shaped hook portion for hooking a hooked body such as a single tube, and a hook is provided continuously on the base end side of the U-shaped hook portion. A grip portion provided with a connecting portion for connecting a tip of a lifeline, and an opening portion which is opened between the grip portion and the tip of the U-shaped hook portion and passes the hooked body. A hook body rotatably pivotally attached to the grip portion to open and close the open portion; and an operation rod rotatably pivotally attached to the grip portion. The opening and closing lever is rotated by operating the operating rod to open and close the opening. Further, it is also characterized in that the tip of the operating rod is pivotally attached to the opening and closing rod. Further, the tip of the operating rod is slidably and elastically abutted against the opening / closing rod, which is characterized in that it is characterized by the above-mentioned. Still further, a lock rod for locking the opening / closing rod is provided on the grip portion. Still further, the grip portion is formed in a U-shape, and is provided continuously and integrally with a base end portion of the U-shaped hook portion.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 denotes a hook main body, which is mainly composed of a U-shaped engaging portion 1a, a grip portion 1b, and an opening portion 1c, as is clear from FIG. The grip portion 1b is also the U-shaped hook portion 1.
The U-shaped engaging portion 1a is formed integrally with the base side 1a 'of the U-shaped engaging portion 1a. The entire U-shaped shape of the grip portion 1b is large enough to be gripped by one hand, and the bottom rear portion is a connection portion 1d for attaching a lifeline. The open portion 1c is an open space between the tip 1a "of the U-shaped hook portion 1a and the grip portion 1b, and allows an object to be hooked such as a single tube to pass therethrough.

Referring again to FIG. 1, reference numeral 2 denotes an opening / closing rod.
As is clear from FIG. 3 (A), the base end 2a is
The front end portion 1 of the grip portion 1b of the hook body 1 by the support shaft 3
b '(see also FIG. 2). The opening and closing lever 2 is appropriately elastically urged in a counterclockwise direction (a direction indicated by a solid line in FIG. 3A) by elastic urging means (a torsion spring, a coil spring, or the like: not shown). The opening and closing rod 2
Is in a state where the opening 1c of the hook body 1 is closed (FIG. 1).
In the state (A), the tip 2b is in contact with the tip 1a "of the U-shaped hooking portion 1a (see also FIG. 1C).

Reference numeral 4 denotes an operating rod. As is apparent from FIG. 3 (C), its base end 4a is pivotally attached to the grip 1b of the hook body 1 by a support shaft 5. ing. The operation rod 4 substantially constitutes a part of the grip portion 1b, and a finger is also put on the outside of the operation rod 4 as shown in FIG. The distal end 4 b of the operating rod 4 is connected to the opening and closing rod 2 via a connecting pin 6. The connecting pin 6 not only reciprocates along an arc centered on the support shaft 5 but also reciprocates along an arc centered on the support shaft 3. In order to be able to reciprocate along both arcs at the same time, play (rack) is provided between the connection pin and the hole of the operating rod 3 into which the connection pin is fitted, or between the connection pin 6 and the hole of the opening / closing rod 2. Or play between the two holes.

Referring again to FIG. 1, reference numeral 7 denotes a lock rod, which is pivotally connected to the handle 1b by a support shaft 8. The lock rod 7 is also elastically urged clockwise by elastic urging means (such as a torsion spring or coil spring, not shown). The lock rod 7 is provided with a lock portion 7a protruding toward the opening / closing rod 2 side. A lock rod 9 provided integrally with the opening and closing rod 2 abuts on the lock rod 7a in an abutting state.

Next, the operation of the hook of the above embodiment will be described. As shown in FIG.
When the grip portion 1b is squeezed, the lock rod 7 rotates from the virtual line state to the solid line state. When the lock rod 7 rotates,
The lock portion 7a also rotates and comes out of contact with the lock rod 9.

When the contact state with the lock rod 9 is released,
The locked state of the opening / closing rod 2 integrated therewith is released. As shown in FIG. 4B, the operation lever 4 is rotated from the imaginary line state to the solid line state by further grasping and tightening in the unlocked state. When the operating rod 4 rotates, FIG.
As is clear from (C), the opening / closing rod 2 rotates from the imaginary line state to the solid line state by linking to this. As a result, the opening 1c of the hook body 1 is opened, and the hooked body such as the single pipe P can be passed. When the hooked body enters the hook main body 1, the gripping force described above is relaxed, and the operating rod 4, the opening / closing rod 2 and the lock rod 7 are returned to the original state by the elastic urging means (FIG. 1). State).

Further, the grip portion 1b is formed in a U-shape,
Since the U-shaped hooking portion 1a is formed continuously and integrally with the base end portion, the ice price t of the lifeline T is connected to the bottom deep portion of the grip portion 1b as shown by an arrow Y in FIG. The lifeline T can be easily and quickly connected to the connecting portion 1d by being introduced into the portion 1d. In particular, since the lifeline T is a textile product and the lifeline T is easily worn by metal parts such as hooks, it is very practically possible to easily and quickly connect the lifeline T in which the ice price t has been formed in advance. It is valid.

In the above embodiment, the distal end 4b of the operating rod 4 is connected to the opening / closing rod 2 via the connecting pin 6. However, the present invention is not limited to this, and as shown in FIG. 5
, The distal end portion 4b 'of the operating rod 4' may be elastically brought into contact with the back surface of the opening / closing rod 2. Note that the clockwise urging force of the operating rod 4 ′ is smaller than the counterclockwise urging force of the opening / closing rod 2. With the above configuration, the operating rod 4 'is pushed in the direction of the arrow X by the gripping force of the finger, and the opening / closing rod 2 is rotated in a virtual line state. The opening and closing rod 2
The tip 4b 'of the operating rod 4 slides along the back surface of the opening and closing rod 2 with the rotation of.

[0014]

As described above, 1) a U-shaped hook portion to be hooked on a hooked body such as a single pipe, and a U-shaped hook portion are provided continuously on the base end side to connect the tip of a lifeline. A grip part provided with a connection part for
A hook body formed between the grip portion and the tip of the U-shaped hook portion, the hook body comprising an open portion for passing the hooked body;
An opening and closing rod pivotally attached to the handle to open and close the opening. By rotating the opening and closing lever by rotating the opening and closing of the opening, there is no danger that a finger may come into contact with a hooked body such as a single tube or the like and be injured. In addition, it is possible to safely carry out the work of hanging and hanging. 2) Since a lock rod for locking the opening / closing rod is provided on the grip portion, the operation of unlocking can be performed simply by grasping. 3) Since the grip portion is formed in a U-shape and continuously and integrally provided at the base end of the U-shaped hook portion, a fiber-made lifeline which is particularly abraded particularly to metal parts such as hooks is used. Easy and quick reattachment on site.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a configuration explanatory view showing one embodiment of a hook of the present invention (A), an enlarged end view (B), a rolled enlarged end view (C) of FIG. It is a figure (D).

FIG. 2 is an explanatory diagram of a configuration of a hook body.

FIGS. 3A and 3B are explanatory views of the operation of the opening and closing rod, an enlarged side view of the opening and closing rod viewed from the direction of the arrow (B), and an explanatory view of the operation of the operating rod (C);
It is the enlarged side view (D) seen from the arrow E direction.

FIG. 4 is an explanatory diagram (A) of an operation of the hook of the embodiment of FIG. 1;
(B).

FIG. 5 is an explanatory view for attaching a lifeline.

FIG. 6 is an explanatory view of the configuration and operation of another embodiment of the operating rod.

FIG. 7 is an explanatory view of a conventional hook.

[Description of Signs] 1 Hook main body 1a U-shaped hooking portion 1a 'proximal end 1a "distal end 1b grip 1c opening 2 opening / closing rod 2a proximal end 2b distal end 3 support shaft 4 operating rod 4' operating rod 4a Base end 4b Tip 4b ′ Tip 5 Support shaft 6 Connecting pin 7 Tip 7a Lock portion 8 Support shaft 9 Lock rod P Single tube T Lifeline t Ice price X direction

Claims (5)

[Claims] 1. A U-shaped hooking portion for hooking on an object to be hooked such as a single tube, and a U-shaped hooking portion is provided continuously at a base end side of the U-shaped hooking portion.
A hook comprising a grip portion provided with a connection portion for connecting a tip of a lifeline, and an opening portion opened between the grip portion and the tip of the U-shaped hook portion for passing the hooked body. An opening / closing rod rotatably pivotally attached to the grip portion to open and close the opening portion; an operation rod pivotally pivotally attached to the grip portion; A hook, wherein the opening and closing rod is rotated by operating the operating rod to open and close the opening. 2. The hook according to claim 1, wherein a tip portion of the operating rod is pivotally attached to the opening / closing rod. 3. The hook according to claim 1, wherein a tip of the operating rod is slidably and elastically abutted on the opening and closing rod. 4. The hook according to claim 1, wherein a lock rod for locking the opening / closing rod is provided on the grip portion. 5. The grip according to claim 1, wherein the grip is formed in a U-shape and is continuously and integrally provided at a base end of the U-shaped hook. 4. The hook according to 4.