JPH0221083Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an invention for improving the pole-mounted safety belt used by workers at heights to prevent falls and for work, especially when the hook is detached from the ring or is not properly engaged. This is an invention related to a safety belt equipped with a device that issues an alarm and warns of danger.

When working at heights, people work on a pole by repeatedly hooking and unhooking the hook of the pole safety belt to the ring, but due to the familiarity of the work, they develop an illusion peculiar to humans, and the hook is attached to the ring. There were many cases where the rope did not hang even though it was intended to be hung, or clothes etc. got caught in it and did not connect it completely, resulting in what is called a no-tether condition, resulting in many falls.

In view of the current situation, the present invention eliminates and improves the shortcomings of conventional products, and provides a safety belt equipped with a device that alerts the operator with an alarm if the hook and ring are not completely connected. Its purpose is to provide.

As an embodiment of the present invention shown in the accompanying drawings, a structure in which the electrodes are cut off will be described in detail.

As shown in the figure, in this embodiment, rings 2 and 3 are attached to positions close to both ends of a body support belt 1, and when these rings 2 and 3 are attached, one end of a fabric 10 in which conductive fibers are woven together with a complementary belt 16 is attached. The parts are sewn to the rings 2 and 3 in electrical contact with each other. The other ends of the fabrics 10, 10 are electrically connected to electrodes 17, 18 of the alarm device 4, respectively. A hook 6 is attached to one or both ends of a rope 5 made of synthetic fibers such as nylon, plated fibers, or conductive fibers such as carbon fibers and stainless steel fibers, and an elastic adjuster 7 is inserted into the middle part. Then, the telescopic adjuster 7 is connected to one ring 2, and the hook 6 is connected to the other ring 3 so that the hook 6 can be connected to and removed from the ring. It has a structure that allows it to operate,
Buzzer 1 when hook 6 is connected to ring 3
If the alarm circuit 19 such as 1 does not operate and the connection is disconnected or incomplete, the buzzer 11 etc.
It has a structure that issues an alarm using a lamp 20 or the like. The alarm device 4 includes a battery 12 and a switch 1.
3. It consists of a switch circuit 14 using transistors, resistors, capacitors, etc., a control circuit 15 using ICs, resistors, capacitors, etc., and an alarm circuit 19 using a buzzer 11, lamp 20, resistors, etc.

Incidentally, in order to issue an alarm when the electrodes 17 and 18 are short-circuited, the second transistor 23 of the switch circuit 14 may be removed and the control circuit 15 may be connected to the first transistor 22.

To use the present invention, an outer tightening belt 9 with a buckle 8 at one end is inserted along the outside of the body support belt 1 through the rings 2 and 3, the belt presser 21, the alarm 4, etc. It is attached to the lower back of the person's body. Then, the telescopic adjuster 7 inserted through the rope 5 is attached to one ring 2, and after the rope 5 is passed around a utility pole or steel tower, the hook 6 attached to the tip is connected to the other ring 3, and the worker When working at heights with one's body wrapped in a safety belt, when switch 13 is turned on, alarm 4 is activated.
The electric circuit includes, for example, an electrode 17, one conductive fabric 10, one ring 2, an elastic adjuster 7,
a conductive rope 5, a hook 6, the other ring 3,
Since the other conductive fabric 10 and the electrode 18 are electrically connected and become conductive, a voltage is applied to the base of the first transistor 22 of the switch circuit 14 in the electronic circuit inside the alarm device 4. Since current flows from the collector of the first transistor 22 to the emitter, the base side of the second transistor 23 becomes negative, and the electronic circuit does not function thereafter. Therefore, while the electrodes 17 and 18 are short-circuited, the control circuit 15 and alarm circuit 19 after the second transistor 23 do not operate.

When the hook 6 is removed from the ring 3, that is, when the electrodes 17 and 18 are separated, voltage is applied to the base of the second transistor 23, so the control circuit 15 consisting of an IC is activated and the buzzer 11 of the alarm circuit 19 sounds. or turn on the lamp 20. However, even when the electrodes 17 and 18 are separated, the capacitor connected to the base side of the first transistor 22 is discharged, and the first transistor 22 is operated for the discharge time, thereby slightly delaying the time to issue the alarm. Further, the control circuit 15 uses an IC 24 having a timer function to intermittently operate the buzzer 11 and lamp 20 of the alarm circuit 19.
The time adjustment is performed using a variable resistor. Also buzzer 1
This control circuit 15 is not required when making 1 a continuous sound or lighting a lamp 20 continuously. These electronic circuits are housed in a predetermined case and attached to the body support belt 1 or the outer tightening belt 9.

Also, which hooks 6 provided at both ends of the rope 5
The effect is the same even if the ring 3 is hooked on and removed from the ring 3.

The present invention is constructed as described above, and by incorporating an alarm device into the safety belt, a buzzer will be activated if the hook 6 fails to engage, forgets to engage, or is incompletely engaged with the ring 3 during work at height. 11 and the lamp 20 to alert the workers, the hook 6 is securely connected to the ring 3, eliminating the situation without a trunk, thereby preventing the accidents that would otherwise occur. You can work safely. In addition, the hook 6 can be used when changing posture during work.
In the temporary non-contact state between the hook 6 and the ring 3, which occurs due to the looseness of the hook, the capacitor provided on the base side of the first transistor 22,
In other words, the delay circuit temporarily maintains the conductive state and prevents the generation of unpleasant alarms, which is a remarkable effect. In addition, in the present invention, it is possible to use a belt woven with conductive fibers instead of the rope 5.

[Brief explanation of the drawing]

Fig. 1 is a plan view of the safety belt of the present invention, Fig. 2 is a front view of the safety belt when it is unfolded, Fig. 3 is a conceptual diagram of the alarm, and Fig. 4 is its circuit diagram. In the figure, 1 is a body support belt, 2 and 3 are rings, 4 is an alarm, 5 is a rope, 6 is a hook, 7 is an elastic adjuster, 8 is a buckle, 9 is an external tightening belt,
10 is a fabric, 11 is a buzzer, 12 is a battery, 13 is a switch, 14 is a switch circuit, 15 is a control circuit, 16 is a complementary belt, 17 and 18 are electrodes, 19
is an alarm circuit, 20 is a lamp, 21 is a belt presser,
22 and 23 are transistors, and 24 is an IC.

Claims (1)

[Scope of claims for utility model registration] (1) Rings 2 and 3 are provided at both ends of the body support belt 1, respectively.
, and electrically connect both rings 2 and 3 with an alarm device 4 that issues an alarm when the electrodes are cut off or short-circuited by an electronic circuit, and use one side of a rope or belt 5 made of a mixture of synthetic fibers and conductive fibers. Or attach hooks 6 to both and extendable adjuster 7 to the middle part.
, the telescopic adjuster 7 is connected to one ring 2, and the hook 6 is connected to the other ring 3 so that the hook 6 can be connected to and removed from the other ring 3, and the electrodes 17 and 18 are cut by the hook 6 being connected and removed. A safety belt equipped with an alarm device featuring a structure that activates 4. (2) Utility model registration claim 1, in which the alarm device 4 is characterized by a structure that includes an electronic circuit that issues an alarm with the buzzer 11 or the lamp 20, or both, by cutting off or short-circuiting the electrode parts 17 and 18.
Safety harness equipped with an alarm device as described in Section 1. (3) The scope of the utility model registration claim 1 or 2, characterized in that the alarm device 4 consists of a battery, a switch circuit 14, a control circuit 15, an alarm circuit 19, etc.
Safety harness equipped with an alarm device as described in Section 1. (4) Claims 1 and 2 of the utility model registration claim characterized in that the switch circuit 14 of the alarm device 4 is provided with a delay circuit so as to delay the time and issue an alarm when the electrode is cut off or short-circuited. Or a safety belt equipped with an alarm device as described in paragraph 3. (5) The alarm device according to claim 1, 2, or 3 of the utility model registration claim, characterized in that the control circuit 15 of the alarm device 4 is equipped with a timer function to generate an alarm intermittently. Safety belt with. (6) The alarm device 4 connects the switch circuit 14 to the alarm circuit 19.
A safety belt equipped with an alarm device according to claim 1, 2, or 3 of the utility model registration claim, characterized by a structure in which the following are connected. (7) According to the scope of claim 1 of the utility model registration, the rings 2 and 3 and the electrode terminals of the alarm 4 are electrically connected by a cloth woven with conductive fibers, a belt, a string, etc. Safety belt with alarm device as described.