JP2007044166A - Attachment check sensor - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an attachment check sensor capable of not only surely visually checking the engagement of a hook and a D ring but also surely checking that they are engaged for preventing the risk in the high-place work such as an electric wire construction. <P>SOLUTION: The attachment check sensor 1 for using in a safety belt comprising a belt wound around a human body, a line engageably arranged in the belt and capable of winding the column, a ring attached to the belt, and a hook 130 constituted of a hook portion 132 being a hook portion arranged in the distal end of the line and having a U-shaped portion capable of hooking to the ring, and a ring coming off preventing portion capable of opening and closing one end of the U-shaped portion for engaging the ring with the U-shaped portion includes an optical detecting means for detecting whether an object is sandwiched between the hook portion and the ring coming off preventing portion when engaging the hook with the ring. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an attachment confirmation sensor for a lifeline for locking an operator and a utility pole in high-altitude work such as electric wire construction.

  When working at heights such as electric cable work, ascending the power pole while turning a single rope, one end of which is wrapped around the waistband belt wrapped around the operator's torso, around the power pole, After being locked to the other end of the waistband belt on the other end of the torso that was swung around the utility pole, the operator and the utility pole were locked, and both hands were freed to perform a predetermined electrical work.

  When locking the torso to the other end of the belt support belt at the other end, hook the hook at the end of the torso rope into a D-shaped metal ring called D-ring attached to the torso belt. Did not.

  However, if the hook is incompletely attached due to the operator's lack of attention, for example, by putting the clothes covered by the worker on the tip of the hook, but it is mistaken that the hook is locked There is. If the work is started in such a state, the hook and the D-ring may be disconnected, and the worker may fall from a high place and cause a fatal injury.

In order to prevent dangers when working at high places such as electrical work, when the auxiliary trunk is hooked on the utility pole and locked, it can be visually confirmed and securely locked, and there is also a leak, hot wire and high voltage A technique relating to providing a safety band capable of detecting a voltage has been introduced (Reference 1). However, the hook portion is provided with a voltage detection function for warning of approaching the high-voltage portion, but the confirmation of the attachment of the hook portion itself is as in the prior art.
JP 2003-70925 A

  The present invention can surely confirm that the hook and the D-ring are not only caught by human eyes but also are locked in order to prevent danger in high-altitude work such as electric wire construction. An object is to provide an attachment confirmation sensor.

  In order to solve the above-mentioned problems, the inventor paid attention to the fact that the light path is blocked by the clothes when a light sensor is provided near the opening of the hook when clothes or the like are sandwiched between the hooks. Invented the invention.

  (1) A belt that is wound around a human body, a rope that can be hooked around the belt and can wind a pillar, a ring that is attached to the belt, and a tip that is attached to the tip of the rope A hook part having a U-shaped part hooked on the ring and a ring retaining part capable of opening and closing one end of the U-shaped part to hook the ring on the U-shaped part. An attachment confirmation sensor for use in a safety belt having a hook, and an optical device for detecting whether an object is caught between the flange portion and the ring retaining portion when the hook is hooked on the ring. An attachment confirmation sensor, comprising: an automatic detection means.

By using the attachment confirmation sensor according to the invention described in (1), the following effects are obtained.
When the installation confirmation sensor of the present invention is used for a safety belt used when working at a high place, when hooking a hook on a ring attached to a belt, an object is placed between the collar and the ring retaining part. Since it has an optical detection means for detecting whether or not there is a pinch, safety can be increased. In particular, in the power sector, blackouts have a great social impact, so restoration work must be performed even under adverse conditions such as raining at night. At that time, if an object is sandwiched between the collar portion and the ring retaining portion, the light is blocked, so that detection is easy to ensure. This is because light detection is not easily affected by electromagnetic fields. If you notice that clothes etc. are caught by optical detection, you can prevent a fatal accident such as a fall accident.

  (2) The attachment confirmation sensor according to (1), wherein the optical detection means includes a first optical fiber having an end portion at the flange portion and a second optical fiber having an end portion at the ring retaining portion. When the U-shaped portion is closed, the mounting is arranged so that light can be transmitted between the first optical fiber and the second optical fiber. Confirmation sensor.

  The mounting confirmation sensor according to the invention described in (2) uses an optical fiber as an optical detection means, and includes a first optical fiber having an end portion at a flange portion and a second light having an end portion at a ring retaining portion. When the U-shaped portion is closed, the optical fiber is arranged so that light can be transmitted between the first optical fiber and the second optical fiber. Since the flange and the ring retaining portion have ends, light transmission is blocked if an object is sandwiched between the collar and the ring retaining portion. By blocking the transmission of light, it is detected that the hook and ring are not securely locked.

  Here, the optical fiber is a line developed for optical communication consisting of a core part having a high refractive index and a clad part having a low refractive index, which is made of glass with high transparency and made of plastic. There is something. In the present invention, it is desirable that the core portion has a large diameter so that light can be transmitted to each other at the end portions of the flange portion and the ring retaining portion when the ring retaining portion is closed. However, an optical coupler having a wide light receiving incident angle at the end can also be used.

  (3) The attachment confirmation sensor according to (1), wherein the optical detection unit includes a reflection unit provided in the flange portion and a light emitting / receiving unit provided in the ring retaining portion. A mounting confirmation sensor.

  In the attachment confirmation sensor according to the invention described in (3), the reflection means is provided in the collar portion of the optical detection means, and the light emitting / receiving means is provided in the ring retaining portion. When the ring retaining portion is closed, the light from the light emitting / receiving unit can be confirmed by receiving the light reflected by the reflection unit of the collar by the light emitting / receiving unit. Light is blocked when an object is caught between the buttocks and the ring stopper. When the light is blocked, it is detected that the hook and the ring are not securely locked.

  Here, it is desirable to use an optical head used for a compact disk as the light emitting and receiving means. This is because they are produced in large quantities, and a laser diode is integrated as a light emitting means and a phototransistor is integrated as a light receiving means.

  (4) The attachment confirmation sensor according to any one of (1) to (3), wherein the optical detection means notifies a user of a safety belt when detecting that both ends of the U-shaped portion are closed. An attachment confirmation sensor comprising an informing means for performing the operation.

  (4) When it is detected by the optical detection means of the attachment confirmation sensor of the above (1) to (3) that both ends of the U-shaped portion are closed, the user is notified by the notification means. For example, the notification means notifies “hook confirmation” by voice. As a result, the user of the safety belt can work with peace of mind. Further, it is possible to prevent a fall from a high place due to the hook being detached.

  Here, the user and the like include not only the person who uses the safety belt but also the supervisor and assistant. Further, the notifying means can notify not only by sound, but also by notifying the supervisor by emitting light or radio waves from an LED or the like.

  (5) The mounting confirmation sensor according to any one of (1) to (4), comprising: a power source that drives the mounting confirmation sensor; and a power switch that interlocks with the ring retaining portion, and the power switch Is inserted when the user of the safety belt operates the ring retaining portion to open one end of the U-shaped portion, and is released after a certain time after the opening operation. A mounting confirmation sensor.

By using the attachment confirmation sensor according to the invention described in (5), the following effects are obtained.
Since the attachment confirmation sensor is used in a safety zone, a battery is usually used as a power source. The battery has a limited time for supplying current. In the present invention, when one end of the U-shaped portion is opened, the power switch is turned on, and the power switch is opened after a certain time, for example, 30 seconds. As a result, since the power consumption of the battery is suppressed, the attachment confirmation sensor can be used for a long time.

  (6) A belt that is wound around a human body, a rope that can be hooked around the belt and that can wind a pillar, a ring that is attached to the belt, and a tip that is attached to the tip of the rope An attachment confirmation sensor for use in a safety belt having a hook portion and a hook configured to be able to be opened and closed, a current return means for returning current to the ring, and a hook for hooking the hook And a latch detection means for detecting that the current is flowing inside the hook closed by the flange and the ring retaining portion.

By using the attachment confirmation sensor according to the invention described in (6), the following actions and effects are obtained.
In the invention described in (6), the current flowing through the ring attached to the belt is returned by the current return means, and the current flowing through the ring is located inside the hook closed by the flange portion and the ring retaining portion. Is detected based on the law of electromagnetic induction. The latch detection means can be realized based on the same principle as the CT clamp tester. By the way, various electric currents flow at work sites such as utility poles, and magnetic fields are also generated due to them. Therefore, it is desirable to use a method in which when a current is supplied by the current return means, a current having a specific frequency is supplied and the voltage detected by the electromagnetic induction is detected by the latch detection means when the frequency is detected.

  According to the present invention, since it can be confirmed that the ring is inside the hook closed by the ring retaining portion, a safer attachment confirmation sensor can be provided.

  (7) A belt that is wound around a human body, a rope that can be hooked around the belt and can wind a pillar, a ring that is attached to the belt, and a tip that is attached to the tip of the rope A hook part having a U-shaped part hooked on the ring and a ring retaining part capable of opening and closing one end of the U-shaped part to hook the ring on the U-shaped part. A safety band comprising a hook and a mounting confirmation sensor according to any one of (1) to (6).

  According to invention of (7), it can confirm that the rope which can wind a pillar around a belt was reliably attached by providing the attachment confirmation sensor demonstrated above in a safety belt. Therefore, the user of the safety belt can avoid dangers such as falling.

  (8) A belt that is wound around a human body, a rope that can be hooked around the belt and that can wind a pillar, a ring that is attached to the belt, and a tip that is attached to the tip of the rope A hook part having a U-shaped part hooked on the ring and a ring retaining part capable of opening and closing one end of the U-shaped part to hook the ring on the U-shaped part. A detachable attachment confirmation sensor for use in a safety belt having a hook, and whether or not an object is sandwiched between the flange and the ring retaining portion when the hook is hooked on the ring. An detachable attachment confirmation sensor comprising optical detection means for detecting.

  In the invention described in (8), the attachment confirmation sensor according to the invention described in (1) is detachable. By making the attachment confirmation sensor detachable, it can be attached in addition to a conventionally used safety belt. By additionally mounting, the same effect as described in (1) can be expected.

  (9) The detachable attachment confirmation sensor according to (8), wherein the optical detection means includes a first optical fiber having an end portion on the flange portion and a second optical fiber having an end portion on the ring retaining portion. When the U-shaped portion is closed, the optical fiber is arranged so that light can be transmitted between the first optical fiber and the second optical fiber. Detachable attachment confirmation sensor.

  In the invention described in (9), the attachment confirmation sensor according to the invention described in (2) is detachable. By making it detachable, it is possible to attach an attachment confirmation sensor in addition to a conventionally used safety belt. By adding and attaching, the same effect as explained in (2) can be expected. In addition, since the optical fiber is used and the shape of the optical fiber can be changed relatively freely, it is suitable to be attached later. However, it is also possible to put them together into an existing safety belt so that they can be easily attached with plastic.

  (10) The detachable attachment confirmation sensor according to (9), wherein the first optical fiber or the second optical fiber includes at least one of the first optical fiber or the second light. A detachable attachment confirmation sensor comprising light leakage means for leaking light outside the fiber.

In the invention described in (10), by leaking light from the optical fiber, the user of the safety belt can know where the buttock is, for example, even in a dark place, so that it can be attached more reliably. By the way, if the light emitting paint is combined so as to be applied to a ring or the like, for example, it can be more securely hooked to the ring, so that the user of the safety belt can be prevented from falling.

  As explained above, in order to prevent dangers in work at heights such as electrical work, make sure that the hook and D-ring are locked not only by human eyes but also by the human eye. It is possible to provide an attachment confirmation sensor capable of

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings. This is merely an example, and the technical scope of the present invention is not limited to this.

[First embodiment]
FIG. 1 is a diagram showing a configuration of an attachment confirmation sensor of the present invention. FIG. 2 is a view during work at a high place on a utility pole with a safety belt provided with an attachment confirmation sensor of the present invention. FIG. 3 is a side view of a work in a high place on a utility pole with a safety belt provided with an attachment confirmation sensor of the present invention. FIG. 4 is a view showing a state in which the ring retaining portion is opened with the attachment confirmation sensor of the present invention attached, and FIG. 5 is a diagram showing the state in which the ring retaining portion is closed with the attachment confirmation sensor of the present invention attached. It is a figure of a state.

  In the first embodiment, the attachment confirmation sensor 1 uses the first optical fiber 20 and the second optical fiber 26 as optical detection means. In the example of FIG. 1, the attachment confirmation sensor 1 is built in the hook 130 of the safety belt 100. The safety belt 100 includes a belt 110 wound around a human body as shown in FIGS. 2, 3, 4, and 5, and a rope capable of being hooked on the belt 110 and capable of winding an electric pole 400. 120, a ring 112 attached to the belt 110, and a hook 130 attached to the tip of the rope 120 and hooked on the ring 112. The hook 130 includes a flange 132, a ring retaining part 134 that can be opened and closed to hook the ring 112, and a hook auxiliary opening / closing part 135.

  The attachment confirmation sensor 1 includes an electronic device unit 5, an optical fiber 20, an optical coupler 22, an optical coupler 24, and an optical fiber 26. The electronic device unit 5 includes a light emitting unit 10, a light receiving unit 30, a control unit 40, a power source 50, a power switch 52, an amplifier 60, and a speaker 62.

  The light emitting unit 10 can be realized by using a light emitting diode. It is desirable that the emitted light has a visible light level. However, it is necessary to achieve consistency so that light can be transmitted between the optical fiber 20, the optical coupler 22, the optical coupler 24, the optical fiber 26, and the light receiving unit 30. As the optical fiber 20 and the optical fiber 26, a line developed for optical communication including a core portion having a high refractive index and a clad portion having a low refractive index can be used. These include those made of glass with high transparency and those made of plastic, both of which can be used.

  The optical coupler 22 and the optical coupler 24 are very thin when, for example, 125 μM is used as an optical fiber. Therefore, in the attachment confirmation sensor 1 of the present invention, the hook 132 and the ring 112 are hooked to prevent the ring from coming off. Alignment is difficult when 134 is closed. Therefore, the problem is solved by using the optical coupler 22 and the optical coupler 24 having a wide light receiving incident angle at the end. Using the technique of forming a mortar-shaped recess at the end of an optical fiber introduced in Japanese Patent Application Laid-Open No. 2000-91995, the light receiving incident angle is widened at the end so as to be compatible with the mounting confirmation sensor 1 of the present invention. be able to. When the ring retaining part is closed at the end of the collar part and the ring retaining part, if the core part having a diameter large enough to transmit light to each other is available, the optical coupler 22, The coupler 24 is not necessary.

  The light receiving unit 30 can be realized by a phototransistor. As described above, it is desirable to adjust or adjust the consistency so that the light transmitted from the light emitting unit 10 to the optical fiber 26 through the optical fiber 20, the optical coupler 22, and the optical coupler 24 can be detected. .

  The control unit 40 can be realized by controlling individual elements and the entire electronic device unit 5 and incorporating a microcomputer, an electronic circuit, and driving software.

  The power source 50 is a power source for driving the electronic device unit 5 and can be realized by a battery or a rechargeable battery. The power switch 52 opens and closes the application of voltage from the power supply 50 to the electronic device unit 5. The power switch 52 is interlocked with an openable / closable ring retaining portion 134 and a hook auxiliary opening / closing portion 135. When the safety belt user opens the openable / detachable ring retaining portion 134, the power switch 52 is turned on. The power switch 52 is opened after a certain time, for example, 30 seconds. In addition, time can be changed so that the user of a safety belt can use easily.

  As the amplifier 60 and the speaker 62, known components similar to those used in commercially available audio equipment can be used. When the light receiving unit 30 detects light and the attachment confirmation sensor 1 detects that the hook 130 is closed, the user is notified of the safety belt. For the notification, for example, a sound “hook confirmation” is emitted from the speaker 62.

  The usage and operation of the attachment confirmation sensor 1 having the above configuration will be described below with reference to FIGS. 2, 3, 4, and 5. FIG.

  Use safety belts to prevent danger when working at high altitudes, especially for electrical work. When using a safety belt, a belt 110 is wound around the human body as shown in FIGS. A ring 112 is attached to the belt 110. Further, a rope 120 and a rope 122 are disposed on the belt 110 so as to be hooked. The user uses the safety belt to wind the rope 120 and the rope 122 around the electric pole, and the hook 130 attached to the ends of the rope 120 and the rope 122 is caught by the ring 112 so as not to fall, and then the electric pole is climbed. .

  However, the utility pole 400 has a communication line 420 or the like in the middle, and therefore, it cannot be climbed while the rope 122 is wound. Therefore, the hook 130 of the one rope 120 of the two ropes 120 and 122 is removed, one of them is wound around the utility pole 400 on the communication line 420, and the hook 130 is stopped on the ring 112 after being wound. The hook 130 of the rope 122 is removed and wound around the utility pole 400 on the communication line 420. After the winding, the hook 130 is fixed to the ring 114. As described above, the user frequently removes the hook 130 having the U-shaped portion from the safety belt.

  As shown in FIGS. 3, 4, 5, and 6, the hook 130 is removed by simultaneously holding the ring retaining portion 134 that can be opened and closed and the hook auxiliary opening and closing portion 135 so that the hook 130 is opened. The hook 132 can be hooked on the ring 112 called. In addition, the power supply switch 52 linked to the ring retaining portion 134 and the hook auxiliary opening / closing portion 135 is closed, and the power of the built-in confirmation sensor 1 is turned on. When the grips of the ring retaining portion 134 and the hook auxiliary opening / closing portion 135 are released, the hook 130 is closed as shown in FIG.

  Here, when an object such as clothes is not sandwiched between the collar part 132 and the ring retaining part 134, the light emitted from the light emitting part 10 of the built-in attachment confirmation sensor 1 is reflected by the optical fiber 20 and the optical coupling. The light is transmitted to the light receiving unit 30 through the optical device 22, the optical coupler 24, and the optical fiber 26. When light is received by the light receiving unit 30, a signal is sent from the control unit 40, and a warning sound such as “hook confirmation” is generated by the amplifier 60 and the speaker 62. The notification means is preferably performed by voice, but a green LED or the like may be turned on, or a method of transmitting a radio signal to the supervisor may be used. Thus, when it is confirmed by the notification means that the hook 130 is hooked on the ring 112, the operator can perform the next operation with peace of mind.

  On the other hand, when the ring 112 is not hooked on the collar part 132 or when an object such as clothes is sandwiched between the collar part 132 and the ring retaining part 134, the light emitted from the light emitting part 10 of the attachment confirmation sensor 1 The light does not travel from the optical fiber 20 and the optical coupler 22 to the optical coupler 24, that is, the light is blocked by the clothes of the worker and the light does not reach the light receiving unit 30. In that case, since the warning sound such as “hook confirmation” expected by the worker is not generated, the worker knows that the hook 130 is not correctly hooked on the ring 112. Therefore, it is possible to re-hook the hook until a warning sound such as “hook confirmation” is heard.

  As described above, in order to prevent danger in high-level work such as electric wire construction, it is possible to reliably confirm that the hook and the D ring are hooked by the mounting confirmation sensor using the optical fiber. . In other words, the operator may misidentify that the hook is hooked even though the hook is incompletely attached, such as by putting the clothes covered by the worker on the tip of the hook due to insufficient confirmation by the worker. Even in such a case, since the attachment confirmation sensor using an optical fiber is detected and notified when the light is blocked, it is possible to prevent an accident in which an operator falls from a high place and causes a fatal injury.

[Second Embodiment]
The second embodiment is characterized in that the technique of an optical head used in a compact disk is applied as an optical detection means. FIG. 6 shows an embodiment in which the technology of the optical head used in the compact disk of the present invention is applied.

  As shown in FIG. 6, the optical detection means of the attachment confirmation sensor 1 ′ according to the present invention is constituted by the reflection means 80 provided in the collar part 132 and the light emitting and receiving means 70 provided in the ring retaining part 134. .

  The light emitting / receiving means 70 uses a laser diode for the light emitting unit 14, an objective lens 72, a beam splitter 90 that transmits light from the back surface and reflects light from the front surface, and a phototransistor and control units 42, 44 for the light receiving unit 34. Have. In addition, a power supply 50, a power switch 52, an amplifier 60, and a speaker 62 are provided as in the first embodiment.

  Next, the operation will be described. When the ring retaining part 134 is closed, the light from the light emitting / receiving unit 70 can be confirmed by receiving the light reflected by the reflecting unit 80 of the flange 132 by the light emitting / receiving unit 70. That is, the laser light emitted from the laser diode that is the light emitting unit 14 is appropriately focused by the objective lens 72 and irradiated to the reflecting means 80 unless there is anything that blocks light such as clothes. The irradiated laser light is reflected by the reflecting means 80 and returned to the light emitting and receiving means 70. The returned laser light is changed in direction by a beam splitter 90 through which light from the back surface passes and light from the front surface is reflected, and reaches the phototransistor which is the light receiving unit 34.

  When the phototransistor that is the light receiving unit 34 is reached, a signal is sent from the control unit 44 as in the first embodiment, and a warning sound such as “hook confirmation” is generated by the amplifier 60 and the speaker 62. The notification means is preferably performed by voice, but a green LED or the like may be turned on, or a method of transmitting a radio signal to the supervisor may be used. Thus, when it is confirmed by the notification means that the hook 130 is hooked on the ring 112, the operator can perform the next operation with peace of mind.

  On the other hand, if an object is sandwiched between the collar 132 and the ring retaining part 134, the laser beam is blocked. By blocking the laser beam, it is detected that the hook 132 and the ring retaining portion 134 are not securely latched.

  The other operations are the same as those in the first embodiment, and will be omitted. By diverting parts using the technology of the compact disk, the electronic device part 5 'can be compactly assembled. In addition, there is an advantage that it is easy to remodel because the main parts are housed in the ring retaining part 134 and only the reflection means 80 is attached to the collar part 132. The other effects are the same as those of the first embodiment, and will be omitted.

[Third embodiment]
The third embodiment is characterized in that it is an attachment confirmation sensor 2 that can be attached to and detached from a hook of a safety belt. By making it possible to attach and detach, it becomes possible to attach to a hook of a safety belt that has been conventionally used. By additionally attaching, the same effect as described in the first embodiment can be expected.

  FIG. 7 is a view showing a state in which the detachable attachment confirmation sensor 2 of the present invention is attached to the hook. As shown in FIG. 7, the attachment confirmation sensor 2 is attached to the hook 130 by attachment means 200, attachment means 202, and attachment means 204. The attaching means can be attached to the hook 130 with a metal fitting or the like, but may be a case integrally molded with plastic or the like. The configuration of the attachment confirmation sensor 2 is the same as that described in the first embodiment. However, the attachment confirmation sensor 2 can be attached to the outside, and the optical fibers 20 and 26 have at least one outside of the optical fiber. The difference is that it has a light leakage means 21 for leaking light. Since the optical fiber can be relatively easily changed in shape, it is suitable to be attached later.

  The usage of the attachment confirmation sensor 2 is the same as that described in the first embodiment. On the other hand, as for the effect, since it has the light leakage means 21 for leaking light outside one or more optical fibers, the electric work must be performed at night or in the rain because power failure is not allowed. Since the outline of the hook 130 can be known from the leaked light, there is an advantage that the mounting operation is easy.

  Further, when the light emitting paint is combined so as to be applied to the ring 112 or the like, for example, it can be more securely hooked to the ring 112, so that the user of the safety belt can be prevented from falling. Further, even when an object is sandwiched between the collar 132 and the ring retaining portion 134, it is easy to confirm by the leaked light. Incidentally, it is of course possible to attach the light to a part of the hook 130.

[Fourth embodiment]
In the fourth embodiment, current is recirculated to the ring attached to the belt by current recirculation means, and the current flowing through the ring is located inside the torso hook closed by the collar portion and the ring retaining portion. This is an embodiment in which the latch detection means detects based on the law of electromagnetic induction.

  FIG. 8 is a diagram showing a current flowing through the ring, and FIG. 9 is a diagram showing a usage state of the attachment confirmation sensor 3 that is detected by a current passed through the ring of the present invention. Since detection is performed based on the law of electromagnetic induction, it is necessary to make the following changes in the ring 114 and hook portions so as to correspond thereto.

  As shown in FIG. 8, the ring 114 includes a conductive portion 115, an insulator portion 116, a battery 119, and a current return means 118 that returns current to the ring 114. The current is preferably a current having a specific frequency. This is because various electric currents flow at work sites such as utility poles, and magnetic fields are also generated.

As shown in FIG. 9, the attachment confirmation sensor 3 is built in the collar portion 132 and the ring retaining portion 134. Since the current flowing through the ring is detected based on the law of electromagnetic induction, it is desirable to use strong reinforced plastic or glass fiber that can pass an electromagnetic field for the collar 132 and the ring retaining part 134.
The attachment confirmation sensor 3 includes a latch detection unit 300, a movable CT clamp unit 302, and a fixed CT clamp unit 304.

  With such an attachment confirmation sensor 3, the current is returned to the ring 114 attached to the belt 110 by the current return means 118, and the current flowing through the ring 114 is closed by the hook 132 and the ring retaining part 134. The latch detection means 300 detects the current flowing in the ring based on the law of electromagnetic induction. The latch detection means 300 can be realized based on the same principle as the CT clamp tester. That is, when the movable CT clamp unit 302 and the fixed CT clamp unit 304 are closed, a magnetic circuit is configured to detect a current flowing through the ring 114. Since the detection is performed by being inside the hook closed by the flange 132 and the ring retaining part 134, it is possible to eliminate problems such as accidentally hooking something other than the ring 114.

  In addition, after the detection, it is possible to notify the worker by providing the notification means described in the first embodiment. According to the present invention, since it can be confirmed that the ring is inside the torso hook closed by the ring retaining portion, a safer attachment confirmation sensor can be provided.

  As mentioned above, although demonstrated using embodiment of this invention, the technical scope of this invention is not limited to the range as described in the said embodiment. Various modifications or improvements can be added to the above embodiment. It is apparent from the scope of the claims that the embodiments added with such changes or improvements can be included in the technical scope of the present invention. For example, although the attachment confirmation sensor has been described, it may be attached to a safety belt.

It is a figure which shows the structure of the attachment confirmation sensor of this invention. It is the figure in high place work with a utility pole with the safety belt which attached the attachment confirmation sensor of this invention. It is the figure which looked at the time of the high place work on a utility pole with the safety belt which attached the attachment confirmation sensor of this invention from the side. It is a figure of the state which opened the ring removal prevention part in the state which attached the attachment confirmation sensor of this invention. It is a figure of the state which closed the ring removal prevention part in the state which attached the attachment confirmation sensor of this invention. An embodiment in which the technology of the optical head used in the compact disk of the present invention is applied will be described. It is a figure which shows the attachment state to the hook of the detachable attachment confirmation sensor 2 of this invention. It is a figure which sends an electric current through the ring of this invention. It is a figure which shows the use condition of the attachment confirmation sensor 3 detected by the electric current sent through the ring of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Mounting confirmation sensor 5 Electronic device part 10 Light emission part 20 1st optical fiber 21 Light leak means 22 Optical coupler 24 Optical coupler 26 2nd optical fiber 30 Light-receiving part 40 Control part 50 Power supply 52 Power switch 60 Amplifier 62 Speaker 70 Light-Emitting / Receiving Means 80 Reflecting Means 90 Beam Splitter 100 Safety Belt 110 Belt 112 Ring 118 Current Returning Means 130 Hook 132 Ridge Part 134 Ring Stopping Part 135 Hook Auxiliary Opening / Closing Part 300 Locking Detection Part 302 Movable CT Clamp Part 304 Fixed CT Clamp part 400 pillar (electric pole)
420 Communication line

Claims (10)

A belt wrapped around the human body,
A rope arranged to be hooked to the belt and capable of winding a pillar;
A ring attached to the belt;
A hook part attached to the tip of the rope, the hook part having a U-shaped part hooked on the ring, and a ring capable of opening and closing one end of the U-shaped part to hook the ring on the U-shaped part A hook composed of a retaining part;
An installation confirmation sensor for use in a safety belt having
Optical detecting means for detecting whether an object is caught between the flange and the ring retaining portion when the hook is hooked on the ring;
An attachment confirmation sensor comprising: The mounting confirmation sensor according to claim 1,
When the optical detection means has a first optical fiber having an end at the flange and a second optical fiber having an end at the ring retaining portion, and the U-shaped portion is closed The mounting confirmation sensor is arranged so that light can be transmitted between the first optical fiber and the second optical fiber. The mounting confirmation sensor according to claim 1,
The optical detection means includes a reflection means provided in the collar part and a light-emitting / receiving means provided in the ring retaining part. The mounting confirmation sensor according to any one of claims 1 to 3,
The optical detection means includes an informing means for informing a user of a safety belt when detecting that both ends of the U-shaped portion are closed. The mounting confirmation sensor according to any one of claims 1 to 4,
A power source for driving the attachment confirmation sensor and a power switch interlocking with the ring retaining portion;
The power switch is turned on when a safety belt user operates the ring retaining portion to open one end of the U-shaped portion, and is opened after a certain period of time after the opening operation. Mounting confirmation sensor characterized by the above. A belt that is wound around the human body, a rope that can be hooked around the belt and can wind a pillar,
An attachment confirmation sensor for use in a safety belt having a ring attached to the belt, a hook portion attached to the tip of the rope, and a hook configured to be able to open and close the ring,
Current reflux means for refluxing current to the ring;
A hook detecting means for detecting that the current flows inside the hook closed by the flange portion and the ring retaining portion when the hook is hooked;
A mounting confirmation sensor. A belt wrapped around the human body,
A rope arranged to be hooked to the belt and capable of winding a pillar;
A ring attached to the belt;
A hook part attached to the tip of the rope, the hook part having a U-shaped part hooked on the ring, and a ring capable of opening and closing one end of the U-shaped part to hook the ring on the U-shaped part A hook composed of a retaining part;
A safety belt having
A safety belt comprising the attachment confirmation sensor according to claim 1. A belt wrapped around the human body,
A rope arranged to be hooked to the belt and capable of winding a pillar;
A ring attached to the belt;
A hook part attached to the tip of the rope, the hook part having a U-shaped part hooked on the ring, and a ring capable of opening and closing one end of the U-shaped part to hook the ring on the U-shaped part A hook composed of a retaining part;
A detachable attachment confirmation sensor for use in a safety belt having
Optical detecting means for detecting whether an object is caught between the flange and the ring retaining portion when the hook is hooked on the ring;
A detachable attachment confirmation sensor comprising: A detachable attachment confirmation sensor according to claim 8,
When the optical detection means has a first optical fiber having an end at the flange and a second optical fiber having an end at the ring retaining portion, and the U-shaped portion is closed A detachable attachment confirmation sensor, wherein the sensor is arranged so that light can be transmitted between the first optical fiber and the second optical fiber. A detachable attachment confirmation sensor according to claim 9,
The first optical fiber or the second optical fiber has a light leakage means for leaking light outside at least one of the first optical fiber or the second optical fiber. Mounting confirmation sensor.

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