KR20170031899A - Safety hook for determining correct installation on safety harness and fixation of hook to support rope and safety harness apparatus using the same - Google Patents

Abstract

A safety hook according to embodiments of the present invention includes a hook having a J-shaped bent portion and a lever which is fixed to one side of the hook so as to rotate only to an inner side of the bent portion of the hook and opens or closes an opened portion of the hook, wherein the hook is formed at one point of the bent portion and further comprises a pull string fixing unit to which an end of the pull string is fixed, and the lever further includes a spring fixing unit, and when the pull string starts from the pull string fixing unit and ends at a terminating side, a spring can be interposed between the terminating side and the spring fixing unit.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a safety hook which can accurately determine whether to be worn or fixed, and a safety device using the safety hook. [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a personal safety gear, and more particularly, to a safety gear for high work.

About half of deaths at construction sites are known to have been caused by falls, and there are a variety of scenes that could lead to falls such as construction, civil engineering, large-scale facilities, shipyards, telephone poles, and building cleaning. Accidental work with a risk of a fall disaster usually involves a lot of temporary work, the risk continues to change, and it is difficult to install a handrail separately depending on the work location and the nature of work, or safety measures are often insufficient for other reasons. Carelessness by workers is also a factor in causing a fall disaster.

In relation to this, according to the rules of industrial safety and health standards in accordance with Article 35 of the Industrial Safety and Health Law, workers should always wear safety goggles if there is a risk of falling due to difficulty in work platform or other fall protection measures , A safety belt hook attachment facility shall be installed at the work place where workers wearing safety belts can safely use hooks of safety belts.

In addition, the regulations require that workers are provided with a safety belt at a work height or depth of 2 meters or more and that they wear and use safety belts, , Bridges, confined spaces, and so on.

The regulations give certain obligations not only to workers but also to employers. For example, the employer should instruct the commander of the work to monitor the wearing condition of the safety gear during work, and to check whether the operator has hooked the safety gear hook to the safety gear hook attachment installed on the workbench, .

In the meantime, the conventional safety belts are classified into a belt type and a safety harness type. The belt type safety belt is a belt type belt-shaped part for supporting the body, and the safety belt type belt is a body It is a type of safety belt that wraps around the arms, legs and trunk with X -

Belt-type safety belts and safety swing type belts all have a rope-like, line-shaped part for connecting a safety belt hook to a lifeline, structure or other attachment facility. At the end of the lanyard is a hook-shaped metal part. The hook is a part that is opened and closed partly from outside to inside in order to attach and detach the lanyard to the attachment equipment.

The one - piece safety belt is a fixed link of the fastening line to the D ring attached to the safety belt.

The U-girdle safety band has hooks at both ends of the lanyard, so that the worker connects the hook of one side of the lanyard to the D-ring attached to the safety band during the work and connects the other hook of the lanyard to the equipment , While moving both before and after the work, the D ring attached to the safety belt is connected while both hooks of the lanyard are connected.

Korean Utility Model No. 20-2015-0002077 (June 1, 2015)

"Proper Wearing of the Safety Belt to Prevent Construction Accidents" Korea Occupational Safety & Health Agency (Feb.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a safety hook and a safety device which can accurately determine whether to be worn or fixed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a safety hook and safety hook connection alarm device capable of judging whether or not a hook mounted on the other side of a safety lanyard is fixed to a support stand or a support rope,

SUMMARY OF THE INVENTION It is an object of the present invention to provide a safety belt device capable of accurately determining whether a hook mounted on one side of a safety belt lanyard is worn on a safety belt harness or a belt for a safety belt.

The solution to the problem of the present invention is not limited to those mentioned above, and other solutions not mentioned can be clearly understood by those skilled in the art from the following description.

According to an aspect of the present invention, there is provided a safety hook comprising a hook-shaped hook having a J-shaped bent portion and a hook-shaped hook fixed to one side of the hooked hook so as to rotate only inside the bent portion of the hooked hook, Wherein the hook-shaped hook further includes a pulling string fixing part formed at one point of the curved part and having one end of the pulling string fixed, and the lever further includes a spring fixing part And a spring can be interposed between the longitudinal piece and the spring fixing portion when the pulling string starts from the pulling string fixing portion and terminates at the longitudinal piece.

According to one embodiment, the lever may further include a sensor portion for detecting a neutral state or a strained state of the pulling string in accordance with the fixing position of the terminal piece.

According to one embodiment, on the lever, the sensor portion, the longitudinal piece, the spring and the spring fixing portion are arranged such that the sensor portion, the longitudinal piece, the spring, and the spring spring are moved from a position where the lever is fixed to the hook- It can be located in the order of the government.

According to one embodiment, when the pulling string is in a neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end piece in a state of being closer to the sensor unit by the spring, When the end portion is pulled to approach the spring fixing portion, the end portion is fixed in a state spaced apart from the sensor portion while compressing the spring according to the pulling of the pulling string, so that the sensor portion can detect the tension state of the pulling string .

According to one embodiment, when the pulling string is in a neutral state, the end portion is fixed in a state of being close to the sensor portion by the restoring force of the spring, so that the sensor portion detects the neutral state of the pulling string, The lever is returned to a position where the lever closes the open portion of the hook-shaped ring after the lever is pulled into the inside of the curved portion of the hook-shaped hook and the hook is deformed while enclosing the outer periphery of the external object, The tension of the pulling string can be detected by fixing the end piece in a state spaced apart from the sensor while compressing the spring according to the pulling of the pulling string.

According to one embodiment, the sensor portion, the longitudinal piece, the spring, and the spring fixing portion on the lever are moved from a position where the lever is fixed to the hook-shaped ring to the spring fixing portion, the spring, Can be placed in the order of negative.

According to an embodiment, when the pulling string is in a neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end piece in a state of being spaced apart from the sensor unit by the spring, When the end piece is pulled away from the spring fixing portion, the end piece is fixed in a state of being close to the sensor portion while pulling the spring according to the pulling of the pulling string, so that the sensor portion can detect the tension state of the pulling string.

According to an embodiment, when the pulling string is in a neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end piece in a state of being separated from the sensor unit by the restoring force of the spring, The lever is returned to a position where the lever closes the open part of the hook-like ring after the lever is pulled into the inside of the curved part of the hook-like hook while rotating the lever, and as the pull- When the end piece is pulled inwardly of the curved portion of the hook-shaped loop, the end piece is fixed in a state of being in proximity to the sensor portion while tensioning the spring, so that the sensor portion can detect the tension state of the pulling string.

Wherein the lever further comprises a pull string support for guiding the pull string when the pull string is in a neutral state and the lever is in a position to close the open portion of the hook loop, The pulling string support can guide the pulling string so that the neutral state path starting from the fixed portion and passing through the pulling string support and terminating in the longitudinal piece does not deviate from the silhouette formed by the hooked loop and the lever have.

According to one embodiment, the sensor portion, the longitudinal piece, the spring, and the spring fixing portion on the lever may be respectively provided in the lever and the hook-shaped ring so as to be exposed to the outside of the lever and the hook-shaped ring.

According to one embodiment, the sensor portion, the longitudinal piece, the spring, and the spring fixing portion on the lever may be respectively provided to the lever and the hook-shaped ring so as to be hidden inside the lever and the hook-shaped ring.

According to one embodiment, the lever may further include a sensor unit for detecting a neutral state, a judgment pending state, or a tension state of the pulling string in accordance with the fixing position of the end member.

According to an embodiment, the sensor unit may include at least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever type switch, or at least one of a semiconductor type pressure sensor and a FSR (Force Sensitive Resistor) A pressure sensor of a pressure sensor may be provided.

According to one embodiment, the safety hook may further include a transmitter for wirelessly transmitting a hook fastening signal generated by the sensor unit according to a neutral state or a tension state of the pulling string.

According to an embodiment, the transmitter may include a passive RFID tag for wirelessly transmitting the hook signal in response to a wireless query signal received from an external RFID reader.

According to another aspect of the present invention, there is provided a hook-shaped hook having a J-shaped bent portion and a hook-shaped hook fixed to one side of the hooked hook so as to pivot only inside the bent portion of the hooked hook, Wherein the lever further comprises a spring pivot and a torsion spring which deforms around the spring pivot, and one end of the wire rod of the torsion spring is connected to the lever, And the other end of the wire rod of the torsion spring is mechanically coupled with a probe to cause a deformation of the torsion spring when the probe is rotated.

According to one embodiment, the lever may further include a sensor unit for detecting a neutral state or a rotating state of the probe according to the degree of rotation of the probe.

According to an embodiment, when the probe is in a neutral state, a part of the probe is fixed by the torsion spring in a state of being in proximity to the sensor part, so that the sensor part detects the neutral state of the probe, The probe fixes the torsion spring in a state of being spaced apart from the sensor while deforming the torsion spring according to the degree of rotation of the probe, so that the sensor unit can detect the rotation state of the probe.

According to an embodiment, when the probe is in a neutral state, a portion of the probe is fixed by the torsion spring in a state of being in proximity to the sensor portion, so that the sensor portion detects the neutral state of the probe, The lever is returned to a position where the open portion of the hook ring is closed again and the probe is pivoted by an external object fixed inside the curved portion of the hook ring, The probe may fix the probe in a state of being spaced apart from the sensor while deforming the torsion spring according to the degree of rotation of the probe, so that the sensor unit can detect the rotation state of the probe.

According to one embodiment, the sensor unit may include at least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch, a lever type switch, or a semiconductor pressure sensor or a FSR pressure sensor.

According to an embodiment, the lever may further include a sensor unit for detecting a neutral state, a judgment pending state, or a pivot state of the pulling string in accordance with the degree of rotation of the probe.

The apparatus may further include a transmitter for wirelessly transmitting a hook fastening signal generated by the sensor unit according to a neutral state or a tension state of the probe.

According to an embodiment, the transmitter may include a passive RFID tag for wirelessly transmitting the hook signal in response to a wireless query signal received from an external RFID reader.

According to one embodiment, the hook-like ring defines a predetermined guiding space along a part of the curved portion where the distal end of the probe can start when the probe is pivoted, Correspondingly, the distal end of the probe may have a length and shape for maneuvering in the guidance space while the probe is rotating.

According to one embodiment, the hook-shaped hook may further include a stopper for restricting the rotation of the distal end of the probe at at least one end of the guide space.

According to an embodiment of the present invention, the hook-shaped ring may include a guide portion formed at a side of the curved portion along a part of the curved portion, when the probe rotates, a predetermined guide space provided to enable the distal end of the probe to start And the probe may have a length and a shape for the distal end of the probe to start in the guide space while the probe is rotating corresponding to the deformation of the torsion spring.

The safety lanyard according to another aspect of the present invention may include a safety hook according to an embodiment and a rope connected to the end of the safety hook.

According to another aspect of the present invention, there is provided a security hook connection alarm device comprising: a housing having a shoulder strap fastening portion for fastening to a shoulder strap of a safety strap; A first sensor unit provided in the housing, for identifying whether a shoulder belt of the safety belt is fastened to the shoulder belt fastening unit and generating a safety belt wearing signal; And a second sensor unit which is provided in the housing and identifies whether a hook of the lanyard is mounted on the hook mount of the safety band by an operator wearing the safety mount and generates a hook mount signal.

According to an embodiment of the present invention, the sash strap fastening portion has a groove with a width corresponding to the thickness of the sash strap, and the first sensor portion includes a magnetic lead which is operated by the sash strap when the fastening of the sash strap is completed with respect to the sash fastener fastening portion. At least one of a switch, a push switch, a toggle switch, a slide switch, and a lever-type switch, or a pressure sensor of at least one of a semiconductor pressure sensor and an FSR pressure sensor.

According to an embodiment of the present invention, there is further provided a pulling strap connected between the hook fixing part of the safety belt and the second sensor part, wherein the second sensor part is fixed to the hook of the safety belt by a worker wearing the safety belt, At least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever-type switch that operates according to the pulling of the pulling band by the weight of the hook applied to the hook mounting portion when the hook is mounted on the mounting portion, A sensor, and a FSR pressure sensor.

According to an embodiment, the safety hook connection alarm device may detect whether or not the operator is wearing a safety band and hooking the hook according to the safety belt wearing signal generated by the first sensor unit and the hook fixing signal generated by the second sensor unit And a control unit for determining whether or not the image is displayed.

According to one embodiment, the control unit determines that the hook is not mounted on the hook mounting unit until the hook mounting signal is activated after activation of the safety belt wearing signal, and when the safety mount wearing signal and the hook mounting signal And when it is all activated, it is operable to determine that the hook is mounted on the hook mounting portion.

According to one embodiment, the safety hook connection alarm device further includes an alarm unit for generating an audiovisual alarm in response to the alarm signal, and the control unit controls the operation of the safety hook connection alarm apparatus according to the safety band wearing signal and the hook mounting signal, The alarm signal can be generated when it is determined that the hook is not attached to the hook mounting portion.

According to one embodiment, the safety hook connection alarm device includes: a reception unit for receiving an externally provided hook engagement signal as to whether or not an object has been drawn into a curved portion of the hook; And a control unit for determining whether the worker wears a safety band, whether or not to hold the hook, and whether or not the hook is fastened according to the safety band wearing signal, the hook hold signal, and the hook fastening signal.

According to one embodiment, the control unit determines that the hook is not attached to either the hook mounting portion and the attachment equipment when the safety band wearing signal is activated and the hook hold signal and the hook fastening signal are inactivated, The hook attachment signal is activated and the hook engagement signal is inactivated, and when the hook engagement signal is activated and the hook engagement signal is activated, it is determined that the hook is mounted on the hook mounting portion, And operable to determine that a hook is attached to the attachment facility.

According to an embodiment, the safety hook connection alarm device may further include an alarm unit for generating an audiovisual alarm or an alarm to be transmitted remotely according to an alarm signal, and the control unit may control the safety hook connection alarm, the hook mounting signal, According to the signal, the operator can operate to generate the alert signal if it is determined that the hook has not been attached to either the hook mount or the attachment facility after wearing the safety band.

According to one embodiment, the safety hook connection information device may further include a position sensor part for generating a dangerous position signal that identifies whether the operator should attach the safety hook to the attachment facility based on the altitude or the working position.

According to one embodiment, the control unit determines that the hook attachment signal and the hook installation signal and the hook engagement signal are inactivated, and that the hook is not mounted in either the hook installation part or the attachment installation The hook rest signal and the hook fastening signal are all activated, it is judged that the hook is mounted on the hook fastening part, the safety rest wearing signal is activated and the hook fastening signal is inactivated, and the hook fastening signal, The signal may be activated to determine that the hook is attached to the attachment facility when activated.

According to an embodiment of the present invention, the apparatus further includes an alarm section for generating an audiovisual alarm or an alarm to be remotely transmitted in response to the alarm signal, wherein the control section controls the operation of the safety belt according to the safety belt wearing signal, And to generate the alert signal if it is determined that the hook is not attached to either the hook mount or the attachment facility.

According to an embodiment, the safety hook connection alarm device may further include a gait sensor unit for identifying whether the operator is walking or not and generating a gait signal.

A safety device according to another aspect of the present invention may include a safety hook connection alarm device and a safety device according to embodiments.

According to the safety hook, the safety hook connection alarm device and the safety device of the present invention, it is possible to judge whether the hook mounted on the other side of the safety lanyard is correctly fixed to the support rope or the support rope attaching equipment.

According to the safety hook, the safety hook connection alarm device and the safety device of the present invention, it is possible to judge whether the safety hook mounted on one side of the safety lanyard is correctly worn on the safety harness or the safety belt.

The effects of the present invention are not limited to those mentioned above, and other effects not mentioned can be clearly understood by those skilled in the art from the following description.

1 is a view illustrating a safety hook according to embodiments of the present invention.
2 is a view illustrating an operation of a safety hook according to embodiments of the present invention.
3 is a view illustrating a safety hook according to embodiments of the present invention.
4 is a diagram illustrating operation of a safety hook according to embodiments of the present invention.
5 is a diagram illustrating a safety hook according to embodiments of the present invention.
6 is a diagram illustrating operation of a safety hook according to embodiments of the present invention.
7 is a diagram illustrating a safety hook according to embodiments of the present invention.
8 is a view illustrating a safety device including a safety hook fastening alarm, a safety lanyard, and a safety belt according to embodiments of the present invention.
9 is a view illustrating a safety hook tightening alarm device according to embodiments of the present invention.
10 is a view illustrating the operation of the safety hook fastening alarm device according to the embodiments of the present invention.

For the embodiments of the invention disclosed herein, specific structural and functional descriptions are set forth for the purpose of describing an embodiment of the invention only, and it is to be understood that the embodiments of the invention may be practiced in various forms, The present invention should not be construed as limited to the embodiments described in Figs.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings, and redundant explanations for the same constituent elements are omitted.

1 is a view illustrating a safety hook according to embodiments of the present invention.

Referring to Fig. 1, the safety hook 10 includes a hook-like collar 11, a lever 12 and a pulling string 13.

When the lever 12 is pivoted to the inside of the hook-like loop 11, the safety hook 10 is pushed by the hook 12 and the hook 12 by rotating the lever 12, depending on whether or not the pull- It is possible to discriminate whether the object which has entered the inside of the curved portion of the arm 11 and has been settled in the inside of the curved portion, the object which has been settled again or the lever 12 has turned once but the object of attachment of the safety arm has not been inserted.

The hook type ring 11 has a J-shaped curved portion 111 and a body portion 112 which is substantially straightened by abutting against the curved portion 111 and has a curved portion 111 and a body portion 112 The ends that are not in contact with each other are disconnected and open.

The hook type ring 11 may further have a pulling cord fixing part 113 formed at one point in the middle of the curved part 111. [ The pull-tab fastening part 113 can fix one end of the pull-tab 13. The pulling pawl fixing part 113 may be formed in the form of a groove for inserting one end of the pulling string 13 according to the embodiment or may be formed in the form of a protrusion for binding one end of the pulling string 13 have.

The other end of the lever 12 is fixed to one end of the hook ring 11 and particularly to the end of the body portion 112 and the other end is fixed to the other end of the hook ring 11, So that the open portions of the hook-shaped hooks 11 can be opened or closed, respectively, while rotating only in the direction inside the hooked portion 111 of the hooked hook 11.

According to an embodiment, the lever 12 may include a spring fixing portion 121, a longitudinal piece 122, and a spring 123.

In this case, the pulling string 13 may start at the pawl fixing portion 113 and pass through the spring fixing portion 121 and reach the vertical piece 122 and terminate.

The spring 123 can be interposed between the spring fixing portion 121 and the longitudinal piece 122. One end of the spring 123 is fixedly fastened to the spring fixing portion 121 and the other end of the spring 123 is fixed And fixedly connected to the longitudinal piece 122.

The spring 123 can be deformed in accordance with the movement of the vertical piece 122 when the vertical piece 122 moves while the pull string 13 is being pulled.

On the other hand, depending on the fixing position of the vertical piece 122, when the vertical piece 122 is fixed at a certain position while the pull string 13 is kept constant, the pull string 13 is in a neutral state ) Or in a strained state.

Here, the neutral state can be said to be a state in which the traction force on the pull string 13 is the minimum or the minimum, so that the longitudinal segment 122 can not be moved or moved less than the distance that can be identified. For example, if the lever 12 stays in the closed position without any objects being drawn inward into the curved portion 111, then no object is drawn into the curved portion 111 before the lever 12 is closed again after opening The pulling force of the pulling string 13 may be minimum or near the minimum when the pulled string 13 is not pulled in and the size of the drawn object inside the curved portion 111 is small before the lever 12 is closed after being opened, The line 13 can be classified as a neutral state.

On the contrary, the tension state can be said to be a state in which the longitudinal piece 122 is moved to the maximum or larger than a predetermined distance, at the maximum or exceeding the pulling force with respect to the pulling string 13. For example, when a sufficiently large object such as an object corresponding to the support rope of the attachment equipment is returned to the closed position after the lever 12 is opened, for example, inside the bend section 111, The pulling force of the pulling rod 13 may be maximum or near maximum, and in such a case, the pulling string 13 may be classified as a tightly pulled tension state.

The lever 12 is pulled by the pulling string 13 according to the fixing position of the longitudinal piece 122 when the longitudinal piece 122 is fixed to a certain position while the pulling string 13 is kept in a pulled state, And a sensor unit 124 for detecting a neutral state or a tense state of the sensor.

According to the embodiment, the spring fixing portion 121, the longitudinal piece 122, the spring 123 and the sensor portion 124 on the lever 12 are located at the points where the lever 12 is fixed to the hook- The sensor part 124, the longitudinal piece 122, the spring 123, and the spring fixing part 121 in this order from the bottom of the housing.

At this time, when the pulling string 13 is in the neutral state, the sensor unit 124 detects that the end piece 122 is fixed to the sensor unit 124 by the spring 123, Can detect the neutral state of the pulling string and thereby generate a deactivated hook locking signal.

When the pull string 13 is pulled so that the longitudinal piece 122 approaches the spring fixing portion 121, the longitudinal piece 122 compresses the spring 123 in accordance with the pulling of the pull string 13, The sensor unit 124 can detect the tension of the pull string 13 and thereby generate the activated hook lock signal.

In this situation, an external object pivots inside the bent portion 111 of the hook-shaped hook 11 while rotating the lever 12, so that the safety hook 10 is fastened to an external object such as a support rope. The lever 12 returns to the position where the open portion of the hook type ring 11 is closed again so that the pulling string 13 is deformed while enclosing the outer periphery of the external object so that the curved portion 13 of the hook type ring 11 111).

The sensor unit 124 detects that the vertical piece 122 is fixed in a state spaced apart from the sensor unit 124 while compressing the spring 123 as the pulling string 13 is pulled as in this situation, It is possible to detect the tension condition of the pulling string 13 and generate an activated hook fastening signal.

The sensor unit 124 may include at least one of a magnetic reed switch, a push button switch, a toggle switch, a slide switch, and a lever type switch. Off type switch can be provided. These switches can distinguish between contact and non-contact.

The magnetic reed switch is a contact switch that closes when the magnetic body is close to the magnetic reed switch, opens when it is moved away from the magnetic reed switch, or closes when it is close to the magnetic reed switch. In this case, the longitudinal piece 122 may be embodied as a magnetic body.

The push switch, the toggle switch, the slide switch, and the lever-type switch are both switches that are opened when the object to be detected is in contact with the operating portion of the switch or when the push object is closed.

If the sensor unit 124 uses an on-off type sensor, a hook fastening signal can be generated according to the contact and non-contact of the switch. If the sensor unit 124 is not pulled or slightly pulled depending on the sensitivity of the switch, It can be identified as being in a neutral state, and only when the pulling string 13 is sufficiently pulled by a sufficiently thick object, it is identified as being in a tense state, thereby generating a hook locking signal.

According to the embodiment, the sensor unit 124 may include at least one of a semiconductor pressure sensor and a FSR (Force Sensitive Resistor) pressure sensor.

The semiconductor type pressure sensor is, for example, a sensor for measuring a stress change due to a pressure applied to a diaphragm using MEMS technology, or a sensor for measuring a voltage change according to a pressure applied to the piezoelectric element.

The FSR pressure sensor is a sensor that measures the resistance change due to pressure change by using an FSR element whose resistance changes according to the pressure.

If the sensor unit 124 uses a pressure sensor, it will generate a hook engagement signal based on the detection value of one of the multiple levels according to the degree of tension of the pull string 13.

In this case, the sensor unit 124 can identify one of the neutral state or the tension state by comparing the detection value to one threshold value, and thereby generate a hook engagement signal.

According to the embodiment, the sensor unit 124 may identify one of the neutral state, the judgment pending state, or the tension state by comparing the detected value to a plurality of threshold values, and thereby generate a hook engagement signal.

For example, the judgment pending state is a state in which an object enters the inside of the curved portion 111 but does not have a sufficient diameter. In other words, the judgment suspended state is a state in which the safety hook 10 is not in the neutral state since it is fastened to the slender object, but the object is in a state in which it can not sufficiently support the safety hook 10, to be.

The safety hook 10 may transmit a hooking signal generated by the sensor unit 124 to the outside. For this purpose, the safety hook 10 may be connected to the sensor unit 124 according to a neutral state or a tension state of the pulling string 13, And a transmitting unit 14 for wirelessly transmitting the hooking signal generated by the hooking unit 124.

According to an embodiment, the transmitter 14 can be implemented using a passive RFID tag that wirelessly transmits a hook-up signal in response to a wireless query signal received from an external RFID reader.

For example, the transmitter 14 can be implemented based on an ultra-thin, passive RFID tag that secures a transmission distance of about 3 to 5 meters using the ISO 18000-6C standard of the 914 MHz band. In this embodiment, in response to a wireless query signal transmitted from an RFID reader carried by an operator or a supervisor, the transmitter 14 transmits a signal indicating that the pulling string 13 is in a tightly pulled tension state or in a neutral state, It is possible to reply to the RFID reader with the identification signal of the safety hook 10. Thus, the RFID reader carried by the worker or the supervisor or the control center connected to the RFID reader can know whether or not the operator has fastened the safety hook 10 to an object under certain circumstances.

According to an embodiment, the lever 12 may further include a pulling bar support 125 for guiding the pulling of the pulling string 13. 1, the pulling string support portion 125 can be formed at a point near the portion where the lever 12 comes into contact with the end portion of the hook-shaped ring 11 toward the curved portion 111. [

More specifically, the pulling string support portion 125 is configured such that when the pulling string 13 is in a neutral state and the lever 12 is in a position to close the open portion of the hooked ring 11, The loop of the pulling string 13 in the neutral state terminating at the end piece 122 passes through the hook ring 11 and the lever 12, So that the pulling string support portion 125 can guide the pulling string 13.

The pulling bar support portion 125 is implemented as a simple pulley type protrusion so that when the lever 12 is at the position to close the open portion of the hooked loop 11, (Not shown).

The pulling bar support 125 may be formed to have a through hole through which the pulling string 13 passes so that the pulling string 13 always passes through the pulling wire support 125. [

According to the embodiment, the sensor portion 124, the vertical piece 122, the spring 123 and the spring fixing portion 121 formed on the lever 12 are fixed to the outside of the lever 12 and the hook- And can be formed on the lever 12 and the hook-shaped ring 11, respectively, so as to be exposed.

The sensor part 124, the longitudinal piece 122, the spring 123 and the spring fixing part 121 formed on the lever 12 are engaged with the hollow lever 12 and the hook-shaped hook 11 As shown in FIG.

2 is a view illustrating an operation of a safety hook according to embodiments of the present invention.

2 (a) shows a state in which the lever 12 of the safety hook 10 is in the closed position and no object enters the inside of the curved portion 111 of the hook-shaped hook 11, And the line 13 is in the neutral state. Since the longitudinal piece 122 is in close contact with the sensor part 124 by the repulsive force of the spring 123, the sensor part 124 can detect the neutral state of the pulling string 13.

2 (b) shows a state in which while the lever 12 of the safety hook 10 is in the open position, a large-diameter object such as, for example, a sufficiently thick support rope is inserted into the bent portion 111 of the hook- And the lever 12 is returned to the closed position again. The object is fixed within the curved portion 111 of the hooked loop 11 and the pulling string 13 is pulled along the outer diameter of the object due to the presence of the object. The pulling string 13 is pulled by the pulling string support 125 The pulled pull string 13 finally pulls the vertical piece 122 toward the spring fixing portion 121. As a result, Since the pulled piece 122 is far away from the sensor portion 124, the sensor portion 124 can reliably detect the tension state of the pull string 13. [

If the safety hook 10 is fastened to the support rope over the head of the worker, the weight of the safety hook 10 will put the object in close contact with the bend 111 as shown in FIG. 2 (b). Alternatively, if the safety hook 10 is fastened to the support rope lying under the operator's foot, the object may be placed in contact with the curved portion 111 and in contact with the lever 12, but in any case the pull- The sensor unit 124 can almost certainly detect the tension state of the pull string 13. [

2C shows a state in which an object whose diameter is not sufficiently large enters the inside of the curved portion 111 of the hook type loop 11 while the lever 12 of the safety hook 10 is in the open position, Is returned to the closed position. The object has settled inside the curved portion 111 of the hooked loop 11 and the pulling string 13 is pulled along the outer diameter of the object due to the presence of the object but the diameter of the object is not large enough. The pulled pull string 13 pulls the vertical piece 122 toward the spring fixing portion 121 but the pulled vertical piece 122 is only slightly distant from the sensor portion 124, May or may not identify the pulling string 13 as being in a tensioned state, depending on the threshold value.

The sensor unit 124 will generate a hook-tightening signal so that it has several levels of detection depending on the degree of tension of the pulling string 13. [

In this case, the sensor unit 124 identifies one of the neutral state or the tension state by comparing the detection value with one threshold value, or compares the detected value with a plurality of threshold values to determine whether the neutral state, the judgment pending state, As shown in Fig.

For example, the sensor unit 124 can be identified as a judgment pending state when the object enters the inside of the curve portion 111 but does not have a sufficient diameter.

The safety hook 10 of FIG. 1 is configured such that when the tension spring 13 is tensioned, the spring 123 is compressed. Conversely, in the embodiment of FIG. 3 below, Fig.

3 is a view illustrating a safety hook according to embodiments of the present invention.

3, the hook-shaped hook 31 in the safety hook 30 shown in FIG. 3 is substantially the same as the hook-shaped hook 11 of the safety hook 10 shown in FIG.

The lever 32 of the safety hook 30 of FIG. 3 has a spring fixing portion 321, a longitudinal piece 322, a spring 323, a sensor portion (not shown) similar to the lever 12 of the safety hook 10 of FIG. 324 and a pull string support 325 and the pull string 33 of Figure 3 is also substantially similar to the pull string 13 of Figure 1 but may have a somewhat different configuration as described below .

Specifically, the lever 32 may include a spring fixing portion 321, a longitudinal piece 322, a spring 323, and a pulling string support portion 325. [

In this case, the pulling string 33 may start at the pulling pawl portion 313 and pass through the pulling pawl portion 325 to reach the end piece 322 and terminate.

The spring 323 can be interposed between the longitudinal piece 322 and the spring fixing portion 321. One end of the spring 323 is fixedly fixed to the spring fixing portion 321 and the other end of the spring 323 is fixed And fixedly connected to the longitudinal piece 322.

The spring 323 can be deformed in accordance with the movement of the longitudinal piece 322 when the longitudinal piece 322 moves while the pulling string 33 is pulled.

The pulling string support portion 325 of the lever 32 guides the pulling of the pulling string 33 and is positioned at a point near the portion where the lever 32 comes into contact with the end portion of the hooked loop 31 on the side of the curved portion 311 .

More specifically, the pulling string support 325 is positioned such that when the pulling string 13 is in a neutral state and the lever 32 is in a position to close the open portion of the hooked loop 31, A path of the neutral pulling string 33 starting from the pivoting portion 311 and passing through the pulling string support portion 325 and ending at the end piece 322 is transmitted to the hook ring 31 and the lever 32, It is possible to guide the pulling string 33 so as not to deviate from the silhouette formed by the pulling string 33.

The pulling string support 325 is embodied as a simple pulley type protrusion so that the pulling string 33 is pulled when at least the lever 32 is in the position to close the open portion of the hooked ring 31 And can be passed through the line support portion 325.

According to the temporary example, the pulling string support portion 325 may be formed to have a through hole through which the pulling string 33 passes so that the pulling string 33 always passes through the pulling string support portion 325.

The sensor portion 324, the longitudinal piece 322, the spring 323, the spring fixing portion 321 and the pulling string support portion 325 formed on the lever 32 are formed by the lever 32 and the hook- And may be provided on the lever 32 and the hook-shaped ring 31 so as to be exposed to the outside of the ring 31, respectively.

The sensor portion 324, the longitudinal piece 322, the spring 323, the spring fixing portion 321 and the pulling string support portion 325 formed on the lever 32 are engaged with the hollow lever 32 Shaped hooks 31 so as to be concealed in the hook-shaped hooks 31, respectively.

On the other hand, when the longitudinal piece 322 is fixed to a certain position while the pulling state of the pulling string 33 is kept constant, depending on the fixing position of the longitudinal piece 322, the pulling string 33 is in a neutral state It can be said that it is in tension.

Here, the neutral state can be said to be a state in which the traction force on the pulling string 33 is the minimum or the minimum, so that the longitudinal piece 322 can not be moved or is moved less than the distant distance. For example, if the lever 32 remains in the closed position without any object entering the inside of the curved portion 311, any object inside the curved portion 311 before the lever 32 is closed again after opening The pulling force of the pulling string 33 will be minimum or near the minimum when the pulled string 33 is not pulled in and the size of the drawn object inside the curved portion 311 is small before the lever 32 is closed after being opened, The line 33 may be classified as a neutral state.

On the contrary, the tension state can be said to be a state in which the traction force on the pulling string 33 is at the maximum or exceeds a certain level, and the longitudinal piece 322 is moved to the maximum or greater than the predetermined distance. For example, when a sufficiently large object such as an object corresponding to the support rope of the attachment equipment is returned to the closed position again after the lever 32 is opened, for example, inside the curved portion 311, The pulling force of the pulling strap 33 may be the maximum or the maximum. In this case, the pulling strap 33 may be classified as a strained tension state.

The lever 32 is pulled by the pulling string 33 according to the fixing position of the longitudinal piece 322 when the longitudinal piece 322 is fixed to a certain position while the pulling string 33 is kept in a pulled state, And a sensor unit 324 for generating a hook engagement signal related to the detection of a neutral state or a tension state of the vehicle.

The position of the sensor portion 324 can be appropriately determined according to the design.

According to the embodiment, the spring retaining portion 321, the longitudinal piece 322, the spring 323, the sensor portion 324 and the pulling string support portion 325 on the lever 32 are arranged such that the lever 32 is hook- The spring 323, the longitudinal piece 322, the sensor portion 324, and the pulling string support portion 325 from the position fixed to the base portion 31 in this order.

At this time, when the pulling string 33 is in the neutral state, the sensor unit 324 detects that the end piece 322 is fixed to the sensor unit 324 by the spring 323 so that the sensor unit 324 May detect the neutral state of the pulling string and thereby generate an inactivated hook fastening signal.

When the pull string 33 is pulled so that the longitudinal piece 322 moves away from the spring fixing portion 321 and approaches the pull string support portion 325, The sensor portion 324 detects that the spring 323 is fixed in a state of being close to the sensor portion 324 while tensioning the spring 323 so that the sensor portion 324 detects the tension of the pulling string 33, An activated hook fastening signal can be generated.

This situation is considered to be the case where an external object pivots inside the bent portion 311 of the hook type ring 31 while rotating the lever 32, The lever 32 is returned to the position where the open portion of the hook type ring 31 is closed again and the pulling string 33 is deformed while enclosing the outer periphery of the external object so that the curved portion 311).

The sensor unit 324 detects that the longitudinal piece 322 is fixed to the sensor unit 324 while tensioning the spring 323 as the pulling string 33 is pulled as in this situation, The tension of the string 33 can be detected.

The sensor unit 324 may include at least one ON / OFF switch of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever type switch. These switches can distinguish between contact and non-contact.

If the sensor unit 324 uses an on-off type sensor, if it is not pulled or slightly pulled depending on the sensitivity of the switch, it can be recognized that the degree of pulling is neglected and is in a neutral state. And can be identified as a tense state only when the tether 33 is sufficiently pulled.

According to the embodiment, the sensor portion 324 may include at least one pressure sensor of a semiconductor type pressure sensor or an FSR pressure sensor.

If the sensor unit 324 uses a pressure sensor, it will generate a hook engagement signal based on the detection value of one of the multiple levels according to the degree of tension of the pulling string 33. [

In this case, the sensor unit 324 can identify one of the neutral state or the tension state by comparing the detected value to one threshold value, and generate a hook fastening signal.

According to an embodiment, the sensor portion 324 can identify one of the neutral state, the determination pending state, or the tension state by comparing the detected value to a plurality of threshold values and generate a hook locking signal.

The safety hook 30 can transmit the hooking signal generated by the sensor unit 324 to the outside. For this purpose, the safety hook 30 is connected to the sensor unit 324 according to the neutral state or the tension state of the pulling string 33, And a transmitter 34 for wirelessly transmitting the hooking signal generated by the hooking signal generator 324.

According to an embodiment, the transmitter 34 may be implemented using a passive RFID tag that wirelessly transmits a hooking signal in response to a wireless query signal received from an external RFID reader.

4 is a diagram illustrating operation of a safety hook according to embodiments of the present invention.

4 shows a state in which the lever 32 of the safety hook 30 is in the closed position and no object is drawn inside the curved portion 311 of the hook type loop 31, And the line 33 is in a neutral state. Since the longitudinal segment 322 is spaced apart from the sensor portion 324 by the restoring force of the spring 323, the sensor portion 324 can detect the neutral state of the pulling string 33. However, this description is limited to the case where the sensor portion 324 is designed to be located far from the neutral piece 322 in the neutral state, and if the sensor portion 324 is designed to be close to the neutral piece 322 in the neutral state The description can vary somewhat.

4 (b) shows a state in which a large-diameter object, such as, for example, a sufficiently thick support rope, is located inside the curved portion 311 of the hook-shaped ring 31 while the lever 32 of the safety hook 30 is in the open position And the lever 32 is returned to the closed position again. The object is fixed within the curved portion 311 of the hook type loop 31 and the pulling string 33 is pulled along the outer diameter of the object due to the presence of the object. The pulling string 33 is pulled by the pulling string support portion 325 The pulled pulling string 33 pulls the end piece 322 toward the pulling support 325. The pulled pull string 32 is then pulled toward the pulling support 325, The drawn piece 322 comes close to the sensor portion 324 so that the sensor portion 324 can reliably detect the tension state of the pulling string 33. [

If the safety hook 30 is fastened to the support rope over the head of the worker, the weight of the safety hook 30 will put the object in close contact with the curved portion 311 as shown in FIG. 4 (b). Alternatively, if the safety hook 30 is fastened to the support rope lying under the operator's foot, the object may be placed in contact with the curved portion 311 and in contact with the lever 32, but in any case the pull- The sensor unit 324 can almost certainly detect the tension state of the pulling string 33. [0064]

4C shows a state in which an object whose diameter is not sufficiently large enters the inside of the curved portion 311 of the hook type loop 31 while the lever 32 of the safety hook 30 is in the open position, Is returned to the closed position. The object has settled inside the curved portion 311 of the hooked loop 31 and the pulling string 33 is pulled along the outer diameter of the object due to the presence of the object but the diameter of the object is not large enough. The pulled pull string 33 pulls the longitudinal segment 322 toward the pull string support 325 but the pulled segment 322 is only slightly closer to the sensor portion 324 so that the sensor portion 324, May or may not detect the tension condition of the pulling string 33.

If the sensor unit 324 uses an on-off type sensor, if the threshold value is high even if the pulling string 33 is slightly pulled due to a non-small object, the degree of pulling is neglected and it can be identified as a neutral state.

If the sensor unit 324 uses a pressure sensor, the hook engagement signal may be generated so as to have a different value depending on the degree of tension of the pulling string 33.

5 is a diagram illustrating a safety hook according to embodiments of the present invention.

5, the safety hook 50 may include a hook-type loop 51, a lever 52, and a probe 53. [

The safety hook 50 is configured such that when the lever 52 is pivoted, the object pivots inside the bent portion of the hook-shaped hook 51 while rotating the lever 52, depending on whether or not the probe 53 pivots It is possible to discriminate whether the fixture has been settled in the inside of the curved portion, the object which has been settled again, or the lever 52 has been turned once but the object of attachment of the safety belt has not been introduced.

The hook type ring 51 has a J-shaped bent portion 511 and a body portion 512 which is substantially straightened by abutting against the bent portion 511. The hooked ring 51 has a curved portion 511, The ends that are not in contact with each other are disconnected and open.

According to the embodiment, the hook-shaped ring 51 is provided with a guide space 513 in which the distal end portion 531 of the probe 53 can start when the probe 53 is rotated, And the probe 53 defines a length for starting the distal end portion 531 of the probe 53 in the guide space 513 while the probe 53 is rotating in accordance with the deformation of the torsion spring 523 And shape.

In this case, the hook-shaped ring 51 may further include a stopper 514 for restricting rotation of the distal end portion 531 of the probe 53 at least at one end of the guide space 513.

According to the embodiment, another stopper 515 is further provided at the other end of the guide space 513 so that the distal end portion 531 of the probe 53 can rotate only between the two stoppers 514 and 515 .

The stopper 514 or the stoppers 514 and 515 may be formed in the form of protrusions for restricting the rotation of the probes 53.

According to the embodiment, the guide space 513 and the stoppers 514 and 515 may be provided so as to be hidden inside the hollow hook-shaped ring 51.

A predetermined guide space 513 provided so that the distal end portion 531 of the probe 53 can be started when the probe 53 rotates is provided along a part of the curved portion 511 to the curved portion 511 In the present invention. The stopper 514 or the stoppers 514 and 515 may be formed in the form of protrusions on the side of the curved portion 511 to limit the rotation of the probe 53.

The other end of the lever 52 is fixed to one end of the hook-shaped ring 51, in particular, to the end of the body 512, and the other end is fixed to the other end of the hook- So that the open portions of the hook type ring 51 can be opened or closed respectively while rotating only in the direction inside the curved portion 511 of the hook type ring 51.

The lever 52 further includes a spring pivot 521 and a torsion spring 522 that is deformed around the spring pivot 521. The wire rod 522 constituting the torsion spring 522, And the other end 524 of the wire rod of the torsion spring 522 is mechanically coupled to the probe 53 so that when the probe 53 is rotated, A deformation may be caused in the opening 522.

The spring pivot 521 may be formed at a point near the portion where the lever 52 comes into contact with the end of the hook-shaped ring 51 toward the curved portion 511.

More specifically, when the probe 53 is in the neutral state and the lever 52 is in the position to close the open portion of the hook-like ring 51, the spring pivot 521 is closed by the probe 53, The position of the probe 53 in the neutral state extending along the extending direction of the one end 523 of the wire 522 of the spring 522 is not substantially deviated from the silhouette formed by the hook 51 and the lever 52 can do.

The lever 52 may further include a sensor unit 525 for generating a hook engagement signal related to the detection of the neutral state or the rotating state of the probe 53 in accordance with the degree of rotation of the probe 53.

The sensor unit 525 detects that the distal end portion 532 of the probe 53 is fixed by the torsion spring 522 in the state of being close to the sensor unit 525 when the probe 53 is in the neutral state It is possible to detect the neutral state of the probe 53 and generate a deactivated hook locking signal.

The probe 53 is moved to the distal end portion 532 of the probe 53 while deforming the torsion spring 522 according to the degree to which the probe 53 is rotated, It is possible to detect the rotation state of the probe 53 and generate an activated hook fastening signal by detecting that the probe 53 is fixed in a state of being separated from the sensor unit 525. [

In this situation, an external object pivots inside the bent portion 511 of the hook-shaped hook 51 while rotating the lever 52. In this case, the safety hook 50 is fastened to an external object such as a support rope, The lever 52 returns to the position where the open portion of the hook type ring 51 is closed again and the probe 53 is rotated by the external object fixed inside the curved portion 511 of the hook type ring 51 It is a situation.

The sensor unit 525 is configured such that the proximal end portion 532 of the probe 53 moves from the sensor portion 525 to the distal end portion of the probe 535 while the probe 53 deforms the torsion spring 522 in accordance with the degree of rotation of the probe 53 It is possible to detect the rotation state of the probe 53 by detecting the fixation in the spaced apart state.

According to the embodiment, the sensor unit 525 may include at least one on / off switch of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever type switch. These switches can distinguish between contact and non-contact.

The magnetic reed switch is a switch that closes when the magnetic material is close to the magnetic reed switch, opens when it is away, or closes when it is close to the magnetic reed switch. The magnetic reed switch has an advantage that it is possible to detect the motion detection object even if the motion detection object does not physically contact the switch, but there is a disadvantage that the detection result may be distorted or interfered when an external magnetic body exists.

The push switch, the toggle switch, the slide switch, and the lever-type switch are both switches that are opened when the object to be detected is in contact with the operating portion of the switch or when the push object is closed.

If the sensor unit 525 uses an on-off type sensor, if the probe 53 does not rotate or slightly rotates according to the sensitivity of the switch, the degree of rotation is ignored and can be identified as being in a neutral state. It can be identified as a rotating state only when the probe 53 is sufficiently rotated by the object.

According to the embodiment, the sensor unit 525 may include at least one of a semiconductor pressure sensor and a FSR pressure sensor.

If the sensor unit 525 uses the pressure sensor, the hook-tightening signal can be generated based on the detection value of one of the plural levels according to the degree of rotation of the probe 53. [

In this case, the sensor unit 525 can identify one of the neutral state or the pivoting state by comparing the detected value to one threshold value, and generate a hook-tightening signal.

According to the embodiment, the sensor unit 525 may identify one of the neutral state, the judgment pending state, or the pivot state by comparing the detected value to a plurality of threshold values, and generate a hook locking signal.

For example, the judgment pending state is a state in which an object enters the inside of the curved portion 511 but does not have a sufficient diameter. In other words, the judgment suspended state is a state in which the safety hook 50 is not in the neutral state since it is fastened to the slender object, but the object is in a state in which it can not sufficiently support the safety hook 50, to be.

The safety hook 50 may transmit the hooking signal generated by the sensor unit 525 to the outside. For this purpose, the safety hook 50 may be connected to the sensor unit (not shown) according to the neutral state or the turning state of the probe 53 And a transmitter 54 for wirelessly transmitting the hooking signal generated by the hooking unit 525.

According to an embodiment, the transmitter 54 may be implemented by including a passive RFID tag that wirelessly transmits a hook signal in response to a wireless query signal received from an external RFID reader.

For example, the transmitting unit 54 can be implemented based on an ultra-thin, passive RFID tag that secures a transmission distance of about 3 to 5 meters using the ISO 18000-6C standard of the 914 MHz band. In this embodiment, in response to the wireless query signal transmitted from the RFID reader carried by the operator or the supervisor, the transmission unit 54 transmits a signal indicating whether the probe 53 is in a pivoting state in which the probe 53 largely rotates or in a neutral state, To the RFID reader together with the identification information of the safety hook (50). Thus, the RFID reader carried by the worker or the supervisor can know whether the operator has fastened the safety hook 50 to a large diameter body under certain circumstances.

6 is a diagram illustrating operation of a safety hook according to embodiments of the present invention.

6A shows a state in which the lever 52 of the safety hook 50 is in the closed position and no object enters the inside of the curved portion 511 of the hook- (53) is in the neutral state. The distal end portion 532 of the probe 53 is in close contact with the sensor portion 525 by the stable torsion spring 522 so that the sensor portion 525 can detect the neutral state of the probe 53. [

6 (b) shows a state in which, while the lever 52 of the safety hook 50 is in the open position, a large-diameter object such as, for example, a sufficiently thick support rope is inserted into the curved portion 511 of the hook- And the lever 52 is returned to the closed position again. The object is fixed inside the curved portion 511 of the hook type loop 51 and the probe 53 is rotated along the outer diameter of the object due to the presence of the object, and the near end portion 532 of the rotated probe 53 is also detected by the sensor The sensor unit 525 can reliably detect the rotating state of the probe 53. [0170]

If the safety hook 50 is fastened to the support rope over the head of the worker, the weight of the safety hook 50 will put the object in close contact with the bend 511 as shown in FIG. 6 (b). Alternatively, if the safety hook 50 is fastened to the support rope lying under the operator's foot, the object may be placed in contact with the curved portion 511 and in contact with the lever 52, but in either case the probe 53 will rotate largely , The sensor unit 525 can almost certainly detect the rotation state of the probe 53. [

6C shows a state in which an object whose diameter is not sufficiently large enters the inside of the curved portion 511 of the hook type loop 51 while the lever 52 of the safety hook 50 is in the open position, Is returned to the closed position. The object is fixed inside the curved portion 511 of the hook-shaped ring 51, and the probe 53 pivots about the outer diameter of the object due to the presence of the object, but the diameter of the object is not sufficiently large. The sensor portion 525 may or may not detect the rotation state of the probe 53 because the distal end portion 532 of the rotated probe 53 is only slightly distant from the sensor portion 525. [

If the sensor unit 525 uses an on-off type sensor, even if the probe 53 slightly rotates due to a non-small object, if the threshold value is high, the degree of rotation is ignored and can be identified as being in a neutral state.

If the sensor unit 525 uses a pressure sensor, a hook-tightening signal can be generated so as to have a different value depending on the degree of the rotation of the probe 53.

The safety hook 50 of Fig. 5 does not guarantee that the probe 53 will pivot in the guidance space 513, whereas conversely, the embodiment of Fig. 7 below explicitly defines the guidance space in which the probe pivots Fig.

7 is a diagram illustrating a safety hook according to embodiments of the present invention.

7, the safety hook 70 is generally similar to the safety hook 50 of FIG. 5, except that the safety hook 70 further includes a guide portion 716 in the hook- .

The guiding portion 716 guides a predetermined guiding space provided to enable the distal end portion 731 of the probe 73 to start when the probe 73 rotates is guided along a part of the bending portion 711 to the bending portion 711 Can be formed on the side surface. The probe 73 is moved in the guide space 713 in such a manner that the distal end portion 731 of the probe 73 is moved in the guide space 713 in the length and shape Lt; / RTI >

The remaining components of the safety hook 70 of FIG. 7 are substantially the same as the respective corresponding components of the safety hook 50 of FIG.

FIG. 8 is a view illustrating a safety device including a safety hook fastening device, a safety fastening line, and a safety device according to embodiments of the present invention, and FIG. 9 is a view illustrating a safety hook fastening device according to an embodiment of the present invention. FIG.

8, the safety device 80 may include a safety hook fastening alarm device 81, a safety lanyard 82,

The safety hook tightening and alarming device 81 can be particularly fastened to the shoulder belt 832 provided with the hook fixing portion 833 for receiving the safety hook 822 of the safety lanyard 82 among various strips constituting the safety belt 83 have.

The safety hook tightening and locking device 81 determines whether the device 81 is fastened to the shoulder straps 832 and whether the safety hooks 822 are stuck in the hook fastening portions 833 of the shoulder straps 832, 822 have been fastened to a predetermined attachment facility and an alarm can be generated if it is determined that the safety hook 822 has not been properly fastened or fastened.

The safety lanyard 82 includes a rope 821 and a safety hook 822 at the end of the rope 821 that is substantially identical to the safety hook 10, 30, 50, 70 according to various embodiments of the present invention can do.

The safety harness 83 may particularly include a D-ring 831, a shoulder strap 832, and a hook mount 833 to which the safety lanyard 82 is connected.

Referring to FIG. 9, the safety hook connection alarm device 81 may include a housing 811, a first sensor unit 812, and a second sensor unit 813.

The housing 811 may include a shoulder strap fastening portion 814 for fastening to the shoulder straps 832 of the safety rest 83.

According to one embodiment, the shoulder strap fastening portion 814 may have a groove with a width corresponding to the thickness of the shoulder strap 832.

The first sensor unit 812 is provided in the housing 811 and identifies whether the shoulder straps 832 of the safety straps 83 are fastened to the shoulder strap fastening units 814 to generate a safety strap wearing signal.

The first sensor unit 812 includes a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a slide switch which are pressed by the shoulder band 832 and operate the operation part when the fastening of the fastener 832 to the fastener 814 is completed. At least one of the lever type switches, or a pressure sensor of at least one of a semiconductor pressure sensor and an FSR pressure sensor.

The second sensor unit 813 is provided in the housing 811 and the safety hook 822 of the safety lanyard 82 is secured to the hook mounting portion 833 of the safety table 83 by the operator wearing the safety stand 83 It is possible to identify whether it is stationary or not and to generate a hook mounting signal.

According to an embodiment, the safety hook connection alarm device 81 may further include a pulling band 834 connected between the hooking portion 833 of the safety belt 83 and the second sensor portion 813.

In this case, when the safety hook 822 of the safety lanyard 82 is held by the hook mounting portion 833 of the safety table 83 by the operator wearing the safety table 83, the second sensor unit 813 At least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever-type switch that operates as the pulling band 834 is pulled by the weight of the safety hook 822 applied to the hooking portion 833, A pressure sensor, a pressure sensor, an FSR pressure sensor, or the like.

Depending on the embodiment, the safety hook connection alarm device 81 determines whether this device 81 is fastened to the scabbard 832 and whether the safety hook 822 is seated in the hook rest 833 of the scabbard 832 , And further includes a controller 815 for determining whether the safety hook 822 has been fastened to a predetermined attachment facility and for generating an alarm when it is determined that the safety hook 822 is not properly fastened or fastened .

The controller 815 controls the wear of the worker's safety band 83 and the operation of the safety hook 822 according to the safety band wearing signal generated at the first sensor unit 812 and the hook setting signal generated at the second sensor unit 813 It is possible to judge whether or not it is stationary.

Specifically, the control unit 815 determines that the safety hook 822 is not mounted on the hook mounting unit 833 from when the safety belt wearing signal is activated until the hook mounting signal is activated, and when the safety belt wearing signal and the hook mounting signal It can be determined that the safety hook 822 is mounted on the hook mounting portion 833. [

The control unit 815 generates an alarm signal when it is determined that the safety hook 822 has not been attached to the hook mounting portion 833 after the operator wears the safety band 83 in accordance with the safety band wearing signal and the hook setting signal can do.

In this case, the safety hook connection alarm device 81 may further include an alarm unit 816 for generating an audible alarm to call the operator's attention in response to the alarm signal.

According to an embodiment, the safety hook connection alarm device 81 may further include a receiver 817 for receiving an externally provided hook engagement signal as to whether or not an object has been drawn into the curved portion of the safety hook 822 .

In this case, the control unit 815 determines whether or not the worker's safety band 83 is worn, whether or not the safety hook 822 is stationary, and whether or not the safety hook 822 is fastened according to the safety band wearing signal, the hook fixing signal, can do.

Specifically, the control unit 815 determines that the safety hook 822 is not attached to either the hook mounting portion 833 and the attachment equipment when the safety band wearing signal is activated and the hook hold signal and the hook fastening signal are inactivated, It is determined that the safety hook 822 is mounted on the hook mounting portion 833 when the signal, the hook mounting signal and the hook fastening signal are both activated, the safety belt wearing signal is activated, the hook fastening signal is inactivated and the hook fastening signal is activated It can be determined that the hook 822 is attached to the attachment facility.

Further, the control unit 815 attaches the safety hook 822 to either the hook mounting portion 833 or the attaching equipment after the worker wears the safety band 83 according to the safety band wearing signal, the hook mounting signal and the hook fastening signal An alarm signal can be generated.

In this case, the alarm unit 816 may generate an audiovisual alarm for the operator, or an alarm remotely transmitted to the supervisor-controlled control unit, in accordance with the alarm signal.

In accordance with an embodiment, the safety hook connection alarm device 81 further includes a position sensor portion 818 for generating a hazardous position signal that identifies whether the operator should attach the safety hook to the attachment facility, based on the elevation or working position .

In this case, according to the embodiment, the control unit 815 controls the safety hook 822 so that when the safety belt wearing signal and the dangerous position signal are activated and the hook locking signal and the hook locking signal are inactivated, And judges that the hook is mounted on the hook mounting portion when the safety band wearing signal, the dangerous position signal, the hook mounting signal, and the hook fastening signal are all activated, and the safety belt wearing signal and the dangerous position signal are activated And the hook hold signal is deactivated and the hook fastening signal is activated, it can be determined that the safety hook 822 is attached to the attachment facility.

The control unit 815 judges that the safety hook 822 has not been attached to either the hook mounting portion or the attachment equipment after the operator wears the safety band according to the safety band wearing signal, the dangerous position signal, the hook setting signal, , An alarm signal can be generated.

The alarm unit 816 may generate an audiovisual alarm to remind the operator of the alert in response to the alarm signal or an alarm remotely transmitted to the supervisor.

According to an embodiment, the safety hook connection alarm device 81 may further include a gait sensor unit 819 for identifying whether the operator is walking or not and generating a gait signal.

10 is a view illustrating the operation of the safety hook fastening alarm device according to the embodiments of the present invention.

10, the shoulder strap fastening portion 814 formed in the housing 811 of the safety hook fastening and deliberating device 81 has a groove having a width corresponding to the thickness of the shoulder strap 832, 814, the driving part of the first sensor part 812 is pressed by the shoulder belt 832, so that the safety sensor wearing signal can be activated by the first sensor part 812.

Next, after the operator connects one end of the pulling band 834 to the driving portion of the second sensor portion 813 and the pulling band 834 runs along the sidewalk 832, the other end of the pulling band 834 It is possible to connect the hook mounting portion 833 to the hook mounting portion 833.

If the operator places the safety hook 822 on the hook mounting portion 833, the hook mounting portion 833 and the pulling band 834 are struck downward by the weight of the safety hook 822 and the pulling band 834 The second sensor unit 813 can generate a hook hold signal, as the driving unit of the second sensor unit 813 is pulled.

On the other hand, when the object is drawn into the curved portion, the safety hook 822 generates a hook fastening signal and transmits it wirelessly. The hook fastening portion 833 has a small hook having a small width, 822 are inserted. This loop, though small, has a width corresponding to that of the support rope, so that the pulling string or probe of the safety hook 822 can be sufficiently pulled or pivoted. Accordingly, the safety hook 822 can generate a hook fastening signal even when fastened to the support rope or the hook fastening portion 833. [

Thus, if a hook hold signal is generated at the second sensor portion 813 of the safety hook fastening alarm device 81 and a hook fastening signal is received from the safety hook 822 at the same time, (833).

On the other hand, if a hook lock signal is not generated in the second sensor portion 813 of the safety hook fastening alarm device 81 and a hook fastening signal is received from the safety hook 822, It can be assumed that it was fastened to the support rope.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. It will be understood that variations and specific embodiments which may occur to those skilled in the art are included within the scope of the present invention.

10, 30 Safety hooks 11, 31 Hook-shaped hooks
111, 311 bend section 112, 312 body section
113, 313 Pulling tabs 12, 32 levers
121, 321 Spring fixing part 122, 322 type fragment
123 and 323 springs 124 and 324,
125, 325 Pull string support 13, 33 Pull string
14, 34 transmitting section
50, 70 Safety hook 51, 71 Hook-shaped hook
511, 711 bend section 512, 712 body section
513, 713 guide spaces 514, 515, 714, 715 stopper
52, 72 Lever 521, 721 Spring pivot
522, 722 Torsion spring 523, 723 One end of the torsion spring
524, 724 Rudder of torsion spring
525, 725 sensor part 53, 73 probe
531, 532, 731, 732 terminal portions 54, 74 transmitting section
80 Safety devices
81 Safety hook locking device 811 Housing
812 first sensor unit 813 second sensor unit
814 a shoulder strap fastening part 815 a control part
816 alarm part 817 receiver part
818 Position sensor unit 819 Walk sensor unit
82 Safety lanyard 821 Rope
822 Safety ropes 83 Safety belts
831 D ring 832 Scythe
833 Hook mount 834 Traction belt

Claims (41)

And a lever which is fixed to one side of the hook type ring so as to pivot only inside the curved portion of the hook type ring and opens or closes the open portion of the hook type ring, as,
The hook-shaped hook further includes a pulling string fixing part formed at one point of the curved part and having one end of the pulling string fixed,
Characterized in that the lever further comprises a spring fixing part, wherein a spring intervenes between the longitudinal piece and the spring fixing part when the pulling string starts at the pulling string fixing part and terminates at the longitudinal piece. hook. The safety hook of claim 1, wherein the lever further comprises a sensor portion for detecting a neutral or strained condition of the pulling string according to the fusing position of the end piece. The sensor unit according to claim 2, wherein the sensor unit, the longitudinal piece, the spring, and the spring fixing unit on the lever are configured such that the sensor unit, the longitudinal piece, the spring, Of the safety hooks. The sensor unit according to claim 2, wherein when the pulling string is in the neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end piece in a state of being close to the sensor unit by the spring,
When the pulling string is pulled so that the end piece approaches the spring fixing portion, the end piece fixes the spring in a state of being spaced apart from the sensor portion while compressing the spring according to pulling of the pulling string, And the state of the safety hook is detected. The sensor unit according to claim 2, wherein when the pulling string is in the neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end piece in a state of being closer to the sensor unit by the restoring force of the spring,
After the external object pivots inside the bent portion of the hook-shaped hook while rotating the lever, the lever returns to a position where the opened portion of the hook-shaped hook is closed again, and the pull- The end piece is fixed in a state spaced apart from the sensor part while compressing the spring according to the pulling of the pulling string so that the sensor part detects the tension state of the pulling string when the pulling string is pulled inside the curved part of the hook- A safety hook characterized by. The sensor according to claim 2, wherein the sensor portion, the longitudinal piece, the spring, and the spring fixing portion are formed on the lever so that the spring fixing portion, the spring, the longitudinal piece, and the sensor portion Said safety hook being positioned in order. 7. The apparatus according to claim 6, wherein when the pulling string is in a neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end piece in a state of being spaced apart from the sensor unit by the spring,
When the pulling string is pulled so that the end piece moves away from the spring fixing portion, the end piece is fixed in a state of being in proximity to the sensor portion while pulling the spring according to pulling of the pulling string, Of the safety hook. The sensor unit according to claim 6, wherein when the pulling string is in a neutral state, the sensor unit detects the neutral state of the pulling string by fixing the end unit in a state of being spaced apart from the sensor unit by the restoring force of the spring,
After the external object pivots inside the bent portion of the hook-shaped hook while rotating the lever, the lever returns to a position where the opened portion of the hook-shaped hook is closed again, and the pull- The end piece is fixed in a state of being in proximity to the sensor while tensioning the spring in accordance with the pulling of the pulling string so that the sensor unit detects the tension state of the pulling string when the pulling string is pulled inside the curved portion of the hook- Features a safety hook. The apparatus of claim 1, wherein the lever further comprises a pulling string support for guiding the pulling string,
When the pulling string is in a neutral state and the lever is in a position to close the open portion of the hooked loop, the pulling string starts from the pulling string fixing portion and terminates in the pulled- Wherein the pulling string support guides the pulling string so that the path in the neutral state does not deviate from the hook-shaped loop and the silhouette formed by the lever. [Claim 3] The method according to claim 2, wherein the sensor unit, the longitudinal piece, the spring, and the spring fixing unit are provided on the lever and the hook-shaped ring so as to be exposed to the outside of the lever and the hook- Safety hook. [Claim 2] The method according to claim 2, wherein the sensor portion, the longitudinal piece, the spring, and the spring fixing portion are provided on the lever and the hook-shaped ring so that they are hidden inside the lever and the hook- Safety hook. The safety hook according to claim 1, wherein the lever further comprises a sensor portion for detecting a neutral state, a judgment pending state, or a tension state of the pulling string in accordance with the fixing position of the end piece. The sensor unit according to claim 2 or 12, wherein the sensor unit includes at least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever type switch, or a semiconductor pressure sensor or a FSR (Force Sensitive Resistor) Characterized in that it comprises at least one pressure sensor. The safety hook according to claim 2 or 12, further comprising a transmitter for wirelessly transmitting a hook fastening signal generated by the sensor unit. 15. The security hook according to claim 14, wherein the transmitter includes a passive RFID tag for wirelessly transmitting the hook signal in response to a wireless query signal received from an external RFID reader. And a lever which is fixed to one side of the hook type ring so as to pivot only inside the curved portion of the hook type ring and opens or closes the open portion of the hook type ring, as,
Wherein the lever further comprises a spring pivot and a torsion spring which deforms around the spring pivot, one end of a wire rod of the torsion spring is fixed to the lever, and the end of the wire rod of the torsion spring And the other end is mechanically coupled to a probe to cause a deformation of the torsion spring upon rotation of the probe. The safety hook according to claim 16, wherein the lever further comprises a sensor part for detecting a neutral state or a rotating state of the probe according to the degree of rotation of the probe. [19] The probe according to claim 17, wherein when the probe is in a neutral state, a portion of the probe is fixed by the torsion spring in a state of being in proximity to the sensor portion so that the sensor portion detects the neutral state of the probe,
Wherein the sensor detects the rotation state of the probe by fixing the probe while being spaced apart from the sensor while deforming the torsion spring according to the degree of rotation of the probe when the probe is rotated, . [19] The probe according to claim 17, wherein when the probe is in a neutral state, a portion of the probe is fixed by the torsion spring in a state of being in proximity to the sensor portion so that the sensor portion detects the neutral state of the probe,
After an external object pivots inside the curved portion of the hook-shaped hook while rotating the lever, the lever returns to a position where the opened portion of the hook-shaped hook is closed again, and the probe is fixed to the inside of the curved portion of the hook- Wherein when the probe is rotated by an external object, the probe fixes the probe in a state of being spaced apart from the sensor while deforming the torsion spring according to the degree of rotation of the probe, hook. [19] The safety device according to claim 17, wherein the sensor unit comprises at least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch and a lever type switch or a semiconductor pressure sensor or a FSR pressure sensor. hook. The safety hook according to claim 17, wherein the lever further comprises a sensor part for detecting a neutral state, a judgment pending state, or a pivoting state of the pulling string in accordance with the degree of rotation of the probe. The safety hook according to claim 17 or 21, further comprising a transmitter for wirelessly transmitting a hook fastening signal generated by the sensor unit. The safety hook according to claim 22, wherein the transmitter includes a passive RFID tag for wirelessly transmitting the hook signal in response to a wireless query signal received from an external RFID reader. 17. The probe of claim 16, wherein the hook-like hook defines a predetermined guide space along a portion of the curved portion where the distal end of the probe can start when the probe is pivoted, the probe corresponding to the deformation of the torsion spring Wherein a distal end of the probe has a length and shape for starting within the guide space while the probe is rotating. 27. The safety hook according to claim 24, wherein the hook-shaped ring further comprises a stopper restricting rotation of the distal end of the probe at at least one end of the guide space. [16] The apparatus of claim 16, wherein the hook-type ring further includes a guide portion formed on a side of the curved portion along a part of the curved portion, the predetermined guide space being provided to allow the distal end of the probe to start when the probe rotates Wherein the probe has a length and a shape for allowing the distal end of the probe to start in the guide space while the probe is rotating corresponding to the deformation of the torsion spring. A safety lanyard for a safety harness comprising a safety hook according to claim 1 or 16 and a rope connected to the end of said safety hook. A housing having a shoulder strap fastening portion for fastening to the shoulder strap of the safety strap;
A first sensor unit provided in the housing, for identifying whether a shoulder belt of the safety belt is fastened to the shoulder belt fastening unit and generating a safety belt wearing signal; And
And a second sensor unit provided in the housing and configured to detect whether a hook of the lanyard is mounted on the hook mount of the safety band by an operator wearing the safety strap to generate a hook mount signal. [Claim 28] The method of claim 28, wherein the shoulder strap fastening portion has a groove having a width corresponding to the thickness of the shoulder strap,
Wherein the first sensor unit includes at least one of a magnetic reed switch, a push switch, a toggle switch, a slide switch, and a lever-type switch, or a semiconductor type pressure sensor, a FSR Wherein the at least one pressure sensor comprises a pressure sensor. 29. The apparatus of claim 28, further comprising a pulling strap connected between said hook rest of said safety rest and said second sensor portion,
The second sensor unit may include a magnetic sensor that operates as the pulling band is pulled by the weight of the hook applied to the hook mounting portion when the hook of the lanyard is mounted on the hook mounting portion of the safety band by the operator wearing the safety band And at least one of a reed switch, a push switch, a toggle switch, a slide switch, and a lever type switch, or at least one of a semiconductor pressure sensor and an FSR pressure sensor. 27. The safety device according to claim 28, further comprising a control unit for determining whether to wear the safety belt of the operator and hold the hook in accordance with the safety belt wearing signal generated by the first sensor unit and the hook holding signal generated by the second sensor unit Hook connection alarm device. 32. The apparatus of claim 31,
Wherein the controller determines that the hook is not mounted on the hook mounting portion after the activation of the safety belt wearing signal until the hook hold signal is activated,
And to determine that the hook is mounted on the hook mounting portion when both the safety belt wearing signal and the hook mounting signal are activated. 32. The apparatus of claim 31, further comprising an alarm unit for generating an audiovisual alarm in accordance with the alarm signal,
Wherein the control unit is operative to generate the alarm signal when it is determined that the operator has not mounted the hook on the hook mounting unit after wearing the safety band according to the safety band wearing signal and the hook mounting signal, Alarm device. 29. The apparatus of claim 28, further comprising: a receiver for receiving an externally provided hook engagement signal as to whether or not an object has been drawn into the curved portion of the hook; And
Further comprising a control unit for determining whether the safety belt is worn by the operator, whether the hook is stuck or not, and whether or not the hook is fastened according to the safety belt wearing signal, the hook fixing signal and the hook fastening signal. 35. The apparatus of claim 34,
Wherein when the hook rest signal and the hook fastening signal are inactivated, it is determined that the hook is not attached to either the hook holder and the attachment equipment,
When the hook rest signal and the hook fastening signal are all activated, it is determined that the hook is mounted on the hook fastening portion,
Is operative to determine that the hook attachment signal is activated and the hook hold signal is deactivated and the hook engagement signal is activated to determine that the hook is attached to the attachment facility. 36. The system according to claim 35, further comprising an alarm section for generating an audiovisual alarm or an alarm to be remotely transmitted according to an alarm signal,
When the operator determines that the hook is not attached to either the hook mounting portion or the attachment equipment after wearing the safety band according to the safety band wearing signal, the hook mounting signal and the hook fastening signal, And to generate a safety hook connection alarm. 35. The safety hook connection alarm device of claim 35, further comprising a position sensor portion for generating a danger position signal that identifies whether the operator should attach the safety hook to the attachment facility based on the altitude or the working position. 37. The apparatus of claim 37,
Wherein the hook rest signal and the hook fastening signal are inactivated when the hook rest signal and the hook fastening signal are inactivated and that the hook is not mounted in either the hook rest portion or the attachment fitting,
When the hook rest signal and the hook fastening signal are all activated, it is determined that the hook is mounted on the hook fastening portion,
Is operative to determine that the hook attachment signal is activated and the hook hold signal is deactivated and the hook engagement signal is activated to determine that the hook is attached to the attachment facility. 36. The system according to claim 35, further comprising an alarm section for generating an audiovisual alarm or an alarm to be remotely transmitted according to an alarm signal,
When the operator determines that the hook is not attached to either the hook mounting portion or the attachment equipment after wearing the safety band according to the safety band wearing signal, the hook mounting signal and the hook fastening signal, And to generate a safety hook connection alarm. The safety hook connection alarm device according to claim 35, further comprising a walking sensor unit for identifying whether the operator is walking or not and generating a walking signal. A safety rest device comprising a safety hook connection alarm device and a safety stand according to any one of claims 28 to 40.

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