JP2003236001A - Safety belt fixture and safety belt using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a safety belt fixture capable of being fixed to the threaded fitting member of a building easily and quickly and a safety belt using the same. <P>SOLUTION: Grasping the fixture body 11 of a safety belt fixture 10 and aligning the screw 12 thereof to the threaded hole 20a of an insertion fitting 20 while pushing a normal rotation switch 14 makes a motor 13 rotate the screw 12 to be engaged with the threaded hole 20a of the insertion fitting 20. At that time, the motor 13 stops rotation when a predetermined period of time elapses, so that the power of the motor 13 does not continuously applied to the screw 12. In addition, when the motor 13 stops after the predetermined period of time, a light emitting portion 16 lights up and a buzzer sounds an alarm to inform a worker that the motor 13 has stopped. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety belt attachment used mainly in a building construction site or the like and a safety belt using the same.

[0002]

2. Description of the Related Art Generally, when working at a high place such as a construction site, workers are obliged to wear a safety belt to prevent falling. In addition, in an indoor construction site of a building, insert metal fittings for hanging the ceiling are buried everywhere on a concrete surface in the building.
As described in Japanese Patent No. 68062, a safety belt attachment having a threaded portion that can be screwed into the insert metal fitting is attached to the insert metal fitting, and the hook of the rope of the safety belt is connected to the annular portion of the attachment. By doing so, the safety belt is connected to the building side.

[0003]

However, in the above-mentioned safety belt attachment, the operator must manually rotate the attachment body and screw it into the insert fitting, which makes the attachment work of the attachment complicated. It was a thing. In particular, at the work site of indoor construction, since the worker must hold the fixture and rotate the fixture body while extending his arm upwards, it is difficult to mount the fixture and move such work to another place. It has to be performed every time, and there is a problem that the burden on the worker and the time loss are large.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a safety belt attachment which can be easily and quickly attached to a screw member of a building and a safety belt attachment using the same. It is to provide an obi.

[0005]

In order to achieve the above-mentioned object, the present invention provides a safety belt according to claim 1, wherein the safety belt is connected to the building side by being screwed to a screwing member embedded in the building. In the fixture, a fixture main body to which the rope of the safety belt is connected, a screw body rotatably provided on the fixture main body and screwable with the screwing member, a motor for rotating the screw body, and a motor. And a switch for activating.

Accordingly, when the screw body is screwed to the screwing member of the building, the screw body can be easily and quickly screwed into the screwing member by rotating the screw body by the motor.

According to a second aspect of the present invention, in the safety belt attachment according to the first aspect, the switch is composed of a switch for rotating the motor in the forward direction and a switch for rotating the motor in the reverse direction.

Thus, in addition to the effect of the first aspect, the screw body is screwed into the threaded member by rotating the motor to one side, and the screw body is moved from the threaded member by rotating the motor to the other side. Come off.

According to a third aspect of the present invention, in the safety belt attachment according to the first or second aspect, when the motor is rotated in a direction in which the screw body is screwed with the screw member, the motor is stopped after a predetermined time has elapsed. The motor stop means is provided.

Thus, in addition to the effects of the first or second aspect, even if the switch is continuously operated, the rotation of the motor is stopped after a predetermined time elapses, so that the power of the motor is not continuously applied to the screw body.

According to a fourth aspect of the present invention, in the safety belt attachment according to the third aspect, there is provided light emitting means for emitting a predetermined light when the motor is stopped by the motor stopping means.

Thus, in addition to the effect of the third aspect, the stop of the motor can be visually recognized by the light emission of the light emitting means.

According to a fifth aspect of the present invention, in the safety belt attachment according to the third or fourth aspect, there is provided warning means for emitting a predetermined warning sound when the motor is stopped by the motor stopping means.

Thus, in addition to the effect of the third or fourth aspect, it is possible to know the stoppage of the motor without visually observing the warning sound of the alarm means.

Further, in claim 6, claims 1, 2, 3,
The safety belt attachment according to 4 or 5 further includes a motor idling means for idling the motor when the load of a predetermined magnitude or more is applied to the screw body.

With this configuration, in addition to the effect of the first, second, third, fourth, or fifth aspect, a load larger than a predetermined size is applied to the screw body, for example, when the screw body is screwed into the screwing member until the rotation stops. When the load is applied, the motor idles with respect to the screw body, so that an excessive load is not applied to the motor.

Further, in claim 7, claims 1, 2, 3,
The safety belt attachment according to 4, 5, or 6 is provided with a turning operation portion capable of manually turning the screw body.

As a result, in addition to the effect of the first, second, third, fourth, fifth or sixth aspect, even if the motor becomes inoperable during use, the screw body can be screwed or removed manually. it can.

Further, in claim 8, claim 1, 2, 3,
In the safety belt attachment described in 4, 5, 6 or 7, the attachment body is provided with a connecting portion to which a rope hook of the safety belt can be connected.

As a result, claims 1, 2, 3, 4, 5,
In addition to the effect of 6 or 7, by connecting the hook of the safety belt to the connecting portion of the attachment body, the safety belt having the hook attached to the rope can be connected.

Further, in claim 9, claim 1, 2, 3,
The safety belt having the safety belt attachment described in 4, 5, 6 or 7 is formed at the tip of the rope.

As a result, the action of claim 1, 2, 3, 4, 5, 6 or 7 is achieved by the safety belt.

[0023]

1 to 8 show an embodiment of the present invention. FIG. 1 is a side view of a safety belt attachment, FIG. 2 is a plan view thereof, and FIG. 3 is a side sectional view thereof. FIG. 4 is a block diagram showing the control system, FIG. 5 is a flowchart showing the operation of the control unit, FIG. 6 is an overall view of the safety belt, and FIGS. 7 and 8 are diagrams showing the mounting operation to the insert fitting.

The safety belt 1 shown in FIG. 1 is used for work at a high place such as a construction site.
It is equipped with 0.

That is, the safety belt 1 has a body belt 1a worn by an operator, and a D-shaped ring 1b to which one end of a rope 2 is connected is attached to the body belt 1a.
In addition, a storage bag 1c for the safety belt attachment 10 is attached to the torso belt 1a.
Is provided.

The safety belt attachment 10 is a rope 2 of the safety belt 1.
, A screw body 12 rotatably provided on the fixture body 11, a motor 13 for rotating the screw body, and a forward rotation switch 14 for rotating the motor 13 in the forward direction.
7, a reversing switch 15 for reversing the motor 13, a light emitting unit 16 for emitting a predetermined light, a buzzer 17 for emitting a predetermined warning sound, and a control unit 18 for controlling the motor 13, as shown in FIG. Further, it is adapted to be mounted on an insert fitting 20 as a screwing member embedded in the concrete surface A of the building.

The attachment main body 11 is formed in a hollow cylindrical shape that can be held by fingers, and is made of a member having sufficient tensile strength for connecting a safety belt. A screw body 12 is arranged on one end side of the fixture body 11, and a connecting portion 11 a for connecting the rope 2 is provided on the other end.

One end of the screw body 12 is an insert fitting 2
It is formed into a male screw shape that can be screwed into the 0 screw portion 20a (female screw), and the other end is connected to the rotating shaft 13a of the motor 13. Further, a flange-shaped rotation operating portion 12a is provided on the other end side of the screw body 12, and the screw body 12 can be manually rotated by rotating the peripheral surface of the rotation operating portion 12a with a fingertip or the like. It has become.

The motor 13 is composed of a direct-current motor capable of rotating in the normal direction and a reverse direction, and is housed at one end of the fixture body 11. In this case, when the motor 13 is normally rotated, the screw body 1
2 rotates in the direction in which it is screwed into the insert fitting 20, and when the motor 13 is rotated in the reverse direction, the screw body 12 rotates in the opposite direction. On the other end side of the fixture body 11,
For example, a power source 13b including a rechargeable battery is housed, and the power source 13b drives the motor 13. Further, the screw body 12 is attached to the rotary shaft 13a of the motor 13.
The flange 13c that locks on the inner surface of the fixture body 11 in order to prevent the pulling force from
Is provided.

Forward switch 14 and reverse switch 15
Is a push-button type momentary switch, and is provided on the side surface of the fixture main body 11 at a position where it can be operated by the thumb.

The light emitting section 16 is an LE that emits green light, for example.
D, and is provided on the side surface of the fixture body 11.

The buzzer 17 is composed of a well-known device that emits a predetermined electronic sound, and emits a warning sound to the outside through a small hole 11b provided in the other end surface of the fixture main body 11.

The control unit 18 is composed of a microcomputer and is connected to the motor 13, the switches 14 and 15, the light emitting unit 16 and the buzzer 17. Further, a timer 18a is connected to the control unit 18.

Here, the operation of the control section 18 will be described with reference to the flow chart shown in FIG. That is, when the forward rotation switch 14 is turned on in the safety belt mount 10 (S1), the timer 18a starts counting time (S1).
2), the motor 13 is normally rotated (S3). Here, before the predetermined time T (for example, 3 seconds) has elapsed, the forward rotation switch 14
If is turned off (S4, S5), the motor 13 is stopped (S6), and the process returns to step S1. If the time T has passed without turning off the forward rotation switch 14 in steps S4 and S5, the motor 13 is stopped (S6) and the light emitting unit 16 is turned on for a predetermined time (S7). The buzzer 17 is operated for a predetermined time (S8), and the process returns to step S1.

On the other hand, when the reverse rotation switch 15 is turned on (S10), the motor 13 is reversely rotated (S11),
When the reverse rotation switch 15 is turned off (S12),
The motor 13 is stopped (S6), and the process returns to step S1.

When the safety belt 1 is used for indoor construction of a building or the like, as shown in FIG. 7, the attachment body 11 of the safety belt attachment 10 is held and the screw body 12 is pushed while pressing the forward rotation switch 14. When fitted to the threaded portion 20a of the insert fitting 20, the screw body 12 is screwed into the threaded portion 20a of the insert fitting 20 while being rotated by the motor 13. As a result, the safety belt attachment 10 is attached to the insert fitting 20 as shown in FIG. 8, and the safety belt 1 is connected to the building side. At that time, even if the forward rotation switch 14 is continuously pressed, the predetermined time T
Since the rotation of the motor 13 stops after the passage of, the power of the motor 13 does not continue to be applied to the screw body 12. Further, when the rotation of the motor 13 is stopped after the elapse of the predetermined time T, the operator is notified of the stop of the motor 13 by lighting the light emitting unit 16 and a warning sound of the buzzer 17.

On the other hand, when removing the safety belt attachment 10 from the insert fitting 20, the reverse switch 15 is pressed.
As a result, the screw body 12 is disengaged from the screw portion 20a of the insert fitting 20 while being rotated in the opposite direction of the mounting by the motor 13.

It is also possible to manually attach or detach the safety belt attachment 10 by rotating the rotation operation portion 12a of the screw body 12.

As described above, according to the safety belt 1 of the present embodiment, the safety belt attachment 10 having the screw body 12 rotated by the motor 13 is provided at the tip of the rope 2, and the forward rotation switch 14 is pushed to push the screw body. Since the screw body 12 is screwed into the insert fitting 20 while rotating 12, the safety belt attachment 10 can be easily and quickly attached to the insert fitting 20. Therefore, the burden on the worker at the work site can be significantly reduced, and the time loss can be eliminated.

Further, in the safety belt mount 10, when the reverse switch 15 is pressed, the motor 13 is rotated reversely and the screw body 1 is rotated.
Since 2 can be rotated in the opposite direction to when it is attached,
Not only wearing the safety belt mount 10, but also the insert fitting 2
It can be easily removed from 0, which is even more effective in reducing the burden on the operator.

Further, the forward rotation switch 14 is pushed to press the motor 1
When 3 is rotated, the motor 1
Since the rotation of 3 is stopped, the forward rotation switch 1
Even if you continue to press 4, the power of the motor 13
It is possible to reliably prevent the overload of the motor 13 without continuously adding to the motor 2. The time from the rotation of the motor 13 until the screw body 12 is completely screwed into the threaded portion 20a of the insert fitting 20 is determined by the length of the screw body 12, the pitch of the screw, the rotation speed of the motor 13, and the like. But,
If the time T until the motor 13 is stopped is set to be slightly longer than the time required for the screwing, the motor 13
The screw body 12 can be securely screwed by the time when the screw stops.

Further, when the rotation of the motor 13 is stopped, the light emitting portion 16 is turned on, so that the operator can visually recognize the stop of the motor 13 and easily confirm that the mounting is completed. You can Further, since the warning sound of the buzzer 17 is emitted together with the lighting of the light emitting unit 16, the operator can know the stop of the motor 13 without visually observing.

Further, since the screw body 12 is provided with the rotating operation portion 12a which can be manually rotated, for example, the power source 13b is used during use.
When the battery is exhausted, the safety belt mount 10 can be manually attached or detached, which is extremely advantageous when the spare battery is not carried.

In the above embodiment, the safety belt mounting tool 10 is used.
I showed the one directly connected to the rope 2 of the safety belt 1,
As shown in FIG. 9, even when a general safety belt 1 ′ having a hook 3 at the tip of the rope 2 is used, by connecting the hook 3 to the connecting portion 11 a of the safety belt attachment 10, Similarly, insert the safety belt 1'into the insert fitting 20.
Can be connected to.

Further, in the above-described embodiment, the motor stopping means used is such that the motor 13 is stopped when the predetermined time T elapses after the motor 13 is rotated. However, as another configuration, for example, the motor 13 is used. Rotating shaft 13a
The torque applied to the motor 13 may be detected, and the motor 13 may be stopped when the torque of a predetermined magnitude or more is detected.

FIGS. 10 and 11 show another embodiment of the present invention. FIG. 10 is a side sectional view of a safety belt attachment, and FIG. 11 is a side sectional view of a clutch mechanism. The same components as those in the above embodiment are designated by the same reference numerals.

That is, in this embodiment, when a load of a predetermined magnitude or more is applied to the motor 13 between the screw body 12 and the motor 13, it serves as a motor idling means for idling the motor 13 with respect to the screw body 12. Is equipped with a clutch mechanism.

Although various known clutch mechanisms can be used, for example, in the clutch mechanism 30 shown in FIG. 11A, the clutch mechanism 30 is held by a rotary member 31 which rotates integrally with the rotary shaft 13a of the motor 13. The steel ball 32 is attached to a cam member 33 that rotates integrally with the screw body 12 by a spring 34.
When the rotational load on the screw body 12 side becomes large,
As shown in FIG. 11 (b), the steel ball 32 overcomes the cam crest 33 a of the cam member 33 against the biasing force of the spring 34,
The rotating member 31 on the side of the motor 13 is made to idle with respect to the cam member 33.

That is, in the present embodiment, when the screw body 12 is screwed into the screw portion 20a of the insert fitting 20 until the rotation of the screw body 12 is stopped, the clutch mechanism 30 causes the motor 13 to idle, so that the motor 13 is excessive. A load is not applied, and it is possible to reliably prevent a failure of the motor 13 and a reduction in its life.

[0050]

As described above, according to the safety belt attachment of the first aspect, it can be easily and quickly attached to the screw member of the building, so that the burden on the operator at the work site is greatly increased. It can be mitigated and the loss of time can be eliminated.

According to the safety belt attachment of claim 2,
In addition to the effect of the first aspect, not only the attachment to the screwing member but also the detachment can be easily performed, so that the burden on the operator can be further reduced.

According to the safety belt attachment of claim 3,
In addition to the effect of the first or second aspect, even when the switch is continuously operated, the power of the motor does not continue to be applied to the screw body, so that the overload of the motor can be reliably prevented.

According to the safety belt attachment of claim 4,
In addition to the effect of the first, second or third aspect, the stop of the motor can be visually recognized by the light emission of the light emitting means, so that it is possible to easily confirm that the mounting is completed.

Further, according to the safety belt attachment of claim 5,
In addition to the effect of the first, second, third or fourth aspect, the alarm sound of the alarm means enables the user to know the stoppage of the motor without visual inspection, so that it is possible to easily confirm that the mounting is completed.

According to the safety belt attachment of claim 6,
In addition to the effects of the first, second, third, fourth, and fifth aspects, since an excessive load is not applied to the motor, it is possible to reliably prevent the failure of the motor and the shortening of the life.

Further, according to the safety belt attachment of claim 7,
In addition to the effect of claim 1, 2, 3, 4, 5 or 6, even when the motor becomes inoperable during use, the screw body can be screwed or removed manually, so that the motor can be operated. This is extremely advantageous when restoration is impossible.

According to the safety belt attachment of claim 8,
In addition to the effect of claim 1, 2, 3, 4, 5, 6 or 7,
Since a safety belt having hooks attached to the rope can be connected, versatility can be improved and the attachment can be handled by itself, which is extremely advantageous for carrying and maintenance.

According to the safety belt of claim 9, as a safety belt capable of achieving the effect of claim 1, 2, 3, 4, 5, 6, 7 or 8, it is effective, for example, at an indoor construction site of a building. Can be used for.

[Brief description of drawings]

FIG. 1 is a side view of a safety belt attachment showing an embodiment of the present invention.

FIG. 2 is a plan view of a safety belt attachment,

FIG. 3 is a side sectional view of the safety belt attachment.

FIG. 4 is a block diagram showing a control system.

FIG. 5 is a flowchart showing the operation of the control unit.

[Figure 6] Overall view of the safety belt

FIG. 7 is a view showing a mounting operation to the insert fitting.

FIG. 8 is a diagram showing a mounting operation to the insert fitting.

FIG. 9: Overall view of safety belt with safety belt attachments connected

FIG. 10 is a side sectional view of a safety belt mount showing another embodiment of the present invention.

FIG. 11 is a side sectional view of the clutch mechanism.

[Explanation of symbols]

1 ... Safety belt, 2 ... Rope, 10 ... Safety belt mounting tool, 11 ...
Fixture body, 12 ... Screw body, 13 ... Motor, 14 ... Forward switch, 15 ... Reverse switch, 16 ... Light emitting part, 17 ...
Buzzer, 18 ... Control part, 20 ... Insert metal fittings, 30 ...
Clutch mechanism.

Continued front page    (72) Inventor Yoshikazu Hayashi             3-5-20 Kamariya Nishi, Kanazawa-ku, Yokohama-shi, Kanagawa (72) Inventor Ginji Hamada             Chiba Prefecture Funabashi City Shibayama 5-49-9 (72) Inventor Mitsuya Uchida             1-2, Shinsencho, Shibuya-ku, Tokyo             In the lop F-term (reference) 2E184 JA03 KA11 LA03 LA16 LA23                       MA09

Claims (9)

[Claims] 1. A safety belt attaching tool for connecting a safety belt to a building side by being screwed to a screwing member embedded in a building, which is a fixture main body to which a rope of the safety belt is connected. A safety belt attachment, comprising a screw body rotatably provided on the main body, which can be screwed into the screw member, a motor for rotating the screw body, and a switch for operating the motor. 2. The safety belt mount according to claim 1, wherein the switch comprises a switch for rotating the motor in the forward direction and a switch for rotating the motor in the reverse direction. 3. A motor stop means for stopping the motor after a predetermined time has elapsed when the motor is rotated in a direction in which the screw body is screwed into the screwing member, according to claim 1 or 2. Safety belt attachment. 4. The safety belt attachment according to claim 3, further comprising a light emitting means for emitting a predetermined light when the motor is stopped by the motor stopping means. 5. The safety belt attachment according to claim 3, further comprising alarm means for emitting a predetermined warning sound when the motor is stopped by the motor stop means. 6. A motor idling means for idling the motor with respect to the screw body when a load of a predetermined magnitude or more is applied to the screw body.
Or the safety belt attachment described in 5. 7. The rotating operation unit capable of manually rotating the screw body is provided.
Or the safety belt attachment described in 6. 8. The safety belt attachment according to claim 1, wherein the attachment body is provided with a connecting portion for connecting a hook of a rope of a safety belt. Ingredient 9. A method according to claim 1, 2, 3, 4, 5, 6 or 7.
A safety belt having the safety belt attachment described at the tip of the rope.