JPH0633940Y2 - Hook with built-in sound alarm - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention is a device for improving a safety hook that is used by attaching to a safety belt rope or an auxiliary rope that is used by a worker at a high altitude to prevent a fall, and in particular, the hook is It is a device relating to a hook provided with a device for emitting a warning sound to draw attention when not engaged with a structural object.

(Problems to be solved by conventional techniques and devices) Conventionally, this type of hook is attached to the tip of a rope,
It was used by simply hanging it off a steel tower, a structure such as a utility pole, a ring, or a parent rope. When hanging on those structures, etc., they are connected to the body with a rope, so even if they fall, they can be stopped and prevented from falling, but when they are removed from those structures, that is, when they are unprotected. When it crashed, it fell to the ground, causing a serious disaster.

(Means for Solving the Invention) In view of such a current situation, the present invention emits a warning sound to alert the operator when the hook is detached from the structure or the like (when it is unprotected). The purpose of the present invention is to provide a hook with a built-in audible alarm to prevent workers from crashing at high altitude.

(Example) An example showing an aspect of the present invention will be described in detail.

In this embodiment, as shown in FIG. 1, a hook opening / closing cap 4 for opening and closing a hook opening 9 of the hook 1 on the abdominal side of a hook body 3 having a hook 1 at the tip and an annulus 2 at the base. The hook opening / closing cap 4 has a built-in spring 10 for constantly urging the hook opening / closing cap 4 in the direction of closing the hook opening 9 and is a safety member for stopping the rotation of the hook opening / closing cap 4 on the back of the hook body. In the safety hook in which the cap 5 is pivotally mounted and the tip end is locked to the shaft 12 provided on the hook opening / closing cap 4 by the biasing of the built-in spring 11, the sensing plate 6 made of a plate material with the shaft 12 as the base point. Is rotatably provided between one side of the hook main body 3 and the side wall of the hook portion opening / closing cap 4, and a spring 13 for urging in the same direction as the hook portion opening / closing cap 4 is provided. The tip is always biased in a direction to close the hook 9.

On the outside of the side wall of the hook opening / closing cap 4 on which the sensing plate 6 is provided, a main switch 7, an operating switch 8, a battery 14,
An electric circuit including a buzzer 15 is provided, and the sensing plate 6 is provided through a hole 16 provided in the hook portion opening / closing cap 4 near the operation switch 8.
The sensing piece 17 whose base end is bent into an L-shape is projected so as to be linked with the operation switch 8.

To use the present invention, one end of the rope is connected to the loop part 2 of the hook, and the other end of the rope is connected to the safety belt attached to the body of the worker. By turning on the switch 7, the hook opening / closing cap 4
A warning sound is emitted from the buzzer 15 by an electric circuit provided on the side surface. In this state, you will climb up the utility pole or tower and start working at high places, but when hooks are hooked on step bolts, other structures, parent ropes, rings, etc., those objects are caught in the hook 9. Since they are fitted, the tip of the sensing plate 6 is pushed to the abdomen side of the hook body 3, whereby the sensing piece 17 turns off the operation switch 8 and the buzzer does not ring. When the hook is removed from the structural object or the like, the hook 9 becomes empty, and the sensing plate 6 is returned by the spring force, the sensing piece 17 turns on the operation switch 8, and the buzzer 15 emits a warning sound.

That is, if the hook is removed from a structural object or the like to be in an unprotected state, there is a danger of a fall, so a warning sound is emitted from the buzzer 15 to alert the operator. By this alarm, the worker engages the hook with a safe structural object or the like, so that a fall accident can be prevented. In order to protect the electric circuit from shocks, dust, and short circuits caused by moisture during work, a box-shaped protective case 18 made of an iron plate is provided, and the contact surface with the hook opening / closing cap 4 is made of rubber or the like. After setting around, screw it on. Further, the main switch 7 does not need to be operated during work at a high place, and in consideration of contact with a structure or the like, the main switch 7 is installed by a method that does not easily operate. In the present embodiment, the protective case 18 has a minus-screw-like structure in which the periphery thereof is bulged in a circular shape so as to avoid contact with other parts, and it does not operate unless it is rotated several times in a screw shape.

Although not used in this embodiment, it is possible to add a resistor, a transistor, an electrolytic capacitor and the like to the electric circuit to provide a delay circuit as shown in FIG. It can be an embodiment suitable for.

In other words, when the hook is in use, the loop 2 and the human body are connected by a rope. Depending on the work content, the rope may be tensioned or loosened as the human body moves. There is a possibility that the ON / OFF state of the operation switch will be intermittent due to shaking, but 2-3
When the second is turned on, the audible alarm can be turned off by adopting this circuit.

(Effect of the Invention) The present invention is configured as described above, and includes the operation switch 8,
Since the electrical parts such as the buzzer 15 and the battery 14 are compactly mounted inside the protective case 18 outside the hook opening / closing cap 4,
The mechanism and the appearance of the plane are not much different from those of the conventional hook, and the operator can use the hook without feeling uncomfortable.

In addition, the hook opening / closing cap 4 of the present invention is provided with a sensing plate 6 built-in, and the tip of the sensing plate 6 protruding from the hook opening / closing cap 4 closes a predetermined portion of the hook opening 9. When the hook opening / closing cap 4 is rotated in an attempt to open the hook opening / closing cap 4 and engage an object such as a ring in the hook opening 9, the sensing plate 6 is rotated together with the hook, and the hook 9 opens. Even after the hook opening / closing cap 4 closes the hook opening 9 after the object is hooked in, the return of the sensing plate 6 is blocked by the thickness of the hooked object, and the OFF state of the operation switch 8 is maintained. . That is, when the hook opening / closing cap 4 is opened regardless of whether or not an object is hooked in the hook mouth 9, a warning sound is emitted,
It is safe because an object such as a regular ring is fitted into the hook 9 and the hook opening / closing cap 4 closes the hook 9 so as not to generate an alarm.

In this way, the operation switch 8 of the audible alarm device 19 is included in performing the same operation as the conventional hook for hooking on a structure or the like.
Since it has a function to turn on and off, it can be used without any resistance and unconsciously without forgetting to hook the worker, failing to hook it, or incomplete engagement without changing the work procedure. A dangerous situation can be avoided and a fall can be completely prevented. In addition, as described above, since a warning sound is emitted in the unprotected state, not only oneself but also a plurality of workers can pay attention to each other and jointly promote safe work, and so on.

Further, as an embodiment incorporating the present invention, it is not only attached to one end of the rope as shown in FIG. 8, but also corresponds to Class E of the safety zone standard of the Ministry of Labor as shown in FIG. It is also possible to attach the present invention to both ends.

[Brief description of drawings]

1 is a front view of the present invention hook, FIG. 2 is a bottom view of the present invention hook, FIG. 3 is a front view of the protective cover cut away, and FIG. 4 is a partial cutaway of the protective cover and the hook opening / closing cap. A plan view, FIG. 5 is an operation state diagram of the sensing piece in a front view, FIG. 6 is an electric circuit diagram, FIG. 7 is an electric circuit diagram in another embodiment, and FIG. 8 is a hook of the present invention. Front view of the rope, FIG. 9 is a front view of another embodiment incorporating the hook of the present invention. Symbols in the figure 1 ... Hook part, 2 ... Ring part, 3 ... Main body 4 ... Hook part opening / closing cap, 5 ... Safety cap 6 ... Sensing plate, 7 ... Main switch 8 ... Actuation switch, 9 …… Hook mouth 10,11,13 …… Spring, 12 …… Axis, 14 …… Battery 15 …… Buzzer, 16 …… Hole, 17 …… Sensor piece 18 …… Protective case, 19 …… Sound alarm

Claims (1)

[Scope of utility model registration request] 1. A hook having a hook opening / closing cap 4 urged by a spring on a hook body 3 having a hook 1 at the tip and an annulus 2 at the base, and the rotation of the hook can be stopped. Safety cap 5
In a hook provided with a double safety device, a sensing plate 6 is provided inside the hook portion opening / closing cap 4 so as to pivot with the opening / closing cap 4, and to rotate independently of the opening / closing cap 4, and one outside of the hook opening / closing cap 4 An electronic audible alarm device 19 including a main switch 7, an operating switch 8, a buzzer 15, and a battery 14 is provided, and the audible alarm device is turned on and off in association with the rotation of the sensing plate 6. Hook with a built-in sound alarm.