KR102566524B1 - Head band type impact sensing device possible for separating from safety helmet - Google Patents

Abstract

The present invention relates to an impact detection device for a safety helmet, which is installed on the safety helmet, detects an impact applied to the safety helmet from the outside by sensor means, and processes data input from the sensor means in a CPU to transmit an accident occurrence signal by a wireless transmitter, and more particularly, to a head band type impact detection device, wherein a plurality of acceleration sensors are installed with a controller at regular intervals along a ring-shaped mounting band that wraps a lower outer peripheral surface of the safety helmet in a circumferential direction and is in close contact with the safety helmet, such that the acceleration sensor can be used to determine the magnitude of an impact on the safety helmet, the position of the impact on a wearer's head, and the occurrence of a fall or collapse of the wearer before or after the impact. At the same time, the impact detection device including the acceleration sensor and controller is made separately from the safety helmet and can be easily mounted on the safety helmet whenever necessary, thereby providing the impact detection device with excellent functionality to the safety helmet, reducing manufacturing costs of the safety helmet and repairing and maintaining costs of the impact detection device compared to a conventional case where the impact detection device is integrally installed on the safety helmet, preventing unnecessary economic waste by disposing of the impact detection device together with the safety helmet in the event of a breakage of the safety helmet, and also improving the convenience of handling and operating the impact detection device.

Description

Head band type impact sensing device possible for separating from safety helmet}

The present invention is installed on a hard hat and detects an impact applied to the hard hat from the outside with a sensor, while processing data input from the sensor in the CPU of the controller to transmit an accident signal to a wireless transmitter, but the lower outer circumferential surface of the hard hat It relates to a headband-type impact sensing device that is detachable from a helmet by installing a plurality of acceleration sensors together with a controller at regular intervals along a ring-shaped mounting band that is wrapped around the helmet and in close contact with the helmet.

In general, in various industrial sites such as factories, construction sites, shipyards, mines, etc., it is mandatory to wear various safety equipment to protect the safety of workers engaged in the workplace. Among the safety equipment, the safety helmet worn on the worker's head is It is used for the purpose of buffering an impact applied to the head of a worker by a falling object or an impact to the head that occurs when a worker falls to a certain level.

To this end, the helmet firstly manufactures a cap body using a lightweight metal such as aluminum or hard plastic or synthetic resin material, and then connects a hair band covering the wearer's head along the lower inner circumference of the cap body, , Along the circumferential direction of the hair band, a cross or lattice-shaped buffer band is connected to separate the crown of the wearer from the cap body, and at the lower left and right sides of the cap body, for wearing a safety helmet It will attach the chin strap.

However, even if the worker wears the helmet correctly, if a relatively strong impact is applied to the helmet, the impact is transmitted to the wearer's head and there is a risk that the wearer may fall or be injured. After determining whether the impact is at a level that can cause injury to the wearer's head, if it is determined that an impact exceeding the standard value has been applied, an accident signal is transmitted to the on-site management office or nearby emergency center for prompt post-processing. Smart safety helmets are becoming widespread.

As a representative example of the smart helmet as described above, a plurality of sheet-type detection sensors that generate electromotive force in proportion to the amount of deformation that is deformed with the helmet by an impact applied from the outside are attached to the inside of the cap body of the helmet along with a lead wire at regular intervals. On the other hand, the CPU, which is connected to each sheet-type sensor by the lead wire, has a built-in controller with a battery and a wireless transmitter installed inside or outside the cap body of the hard hat. Prior application as Patent Application No. 176364 in 2021 and patent registration (No. 10-2458477).

As described above, according to the smart helmet previously filed by the present applicant, the amount of impact applied to the helmet and the location of the wearer's head to which the impact was applied are determined by using the electromotive force (deformation) value input from each sheet-type sensor to the CPU of the controller. On the other hand, when the value of the impact exceeds the reference value, the location information of the wearer's head to which the impact is applied is transmitted to the outside using the wireless transmitter of the controller together with the accident signal, so that in the event of a safety accident, prompt and appropriate This will enable follow-up.

However, even in various other types of safety helmets provided with an impact sensing function, including the previously filed smart safety helmets, the sensor means for impact sensing is manufactured integrally with the cap body of the safety helmet together with the lead wire, so that not only the manufacturing cost of the safety helmet itself There was also a problem in that the maintenance (repair or replacement) cost of the sensor means was greatly increased, and when the helmet was determined to be unusable due to damage or cracks, the helmet had to be discarded along with the sensor means, resulting in unnecessary economic waste. There was a problem in that it was difficult to sufficiently secure the independent handling of the shock sensing mechanism including the sensor means and the controller and the convenience of its operation.

In particular, the amount of impact applied to the helmet and the position of the wearer's head where the impact is applied can be determined to some extent accurately using each sensor means, but whether the impact is due to a falling object or a collision with a structure or a worker's fall In addition, there was a problem in that it was not possible to properly determine whether a worker fell down after an impact or a worker fell from a certain height due to the impact. It was difficult to optimize the follow-up measures according to the specific type of accident.

Republic of Korea Patent Registration No. 10-2458477

The present invention has been made to solve the above conventional problems, and a plurality of acceleration sensors are installed at regular intervals along a ring-shaped mounting band that is in close contact with the helmet while wrapping the lower outer circumferential surface of the helmet in the circumferential direction. By installing together with, the acceleration sensor is used to determine not only the magnitude of the impact applied to the helmet and the position of the wearer's head to which the impact was applied, but also whether or not the fall or fall of the wearer occurred before and after the impact. At the same time, the main purpose is to provide an elastic band-type impact sensing device that can be easily installed and used on the helmet whenever necessary after the shock sensing device including the acceleration sensor and the controller is manufactured separately from the helmet. as a technical challenge.

The present invention as a means for solving the above technical problem is installed on a hard hat and detects an impact applied to the hard hat from the outside with a sensor, while processing the data input from the sensor in the CPU of the controller to generate an accident signal through a wireless transmitter In the shock sensing device for a hard hat to send out, the impact sensing device includes a ring-shaped mounting band that is elastically installed in close contact with the hard hat while wrapping the lower outer circumferential surface of the hard hat in the circumferential direction, and a certain arrangement along the mounting band. It includes a plurality of acceleration sensors installed at intervals, and the controller is connected and installed with a mounting band at an arbitrary position between the acceleration sensors, and the CPU and wireless transmitter are embedded in the outer casing of the controller together with the battery. The CPU is installed connected to each acceleration sensor by a lead wire wired along the mounting band from a connection terminal provided at a location selected from the left, right or double of the outer casing, while the outer casing is connected to the on/off of the controller. It is characterized in that a switch means for off operation is provided, and the outer casing of the controller is installed in close contact with the outer surface of the hard hat together with the mounting band, and the surface of the outer casing of the controller in close contact with the outer surface of the hard hat and the mounting band It is characterized in that a non-slip surface is provided on the inner surface, and a reset button connected to the CPU is provided on the outer casing of the controller for zero point setting of the acceleration sensor and transmission of an accident release signal. A connection terminal for charging the battery is provided on the upper or lower surface of the casing, and a watertight terminal cap is detachably fitted to the connection terminal.

As a more preferred embodiment, a tightening buckle for length adjustment is provided on the side of the mounting band adjacent to the controller, while the acceleration sensor is installed over a position excluding the length adjustment range of the mounting band by the tightening buckle, or the mounting band itself is While being an elastic elastic band, the lead wire is characterized in that it is wired in a zigzag waveform along the mounting band, and at one end of the mounting band, a snap-type setting clip that is detachably fitted with the controller is connected and installed. On one side of the outer casing of the controller, a clip holder is provided in which the setting clip of the mounting band is inserted inwardly and snapped into place, and the switch means turns on the controller according to assembly or separation between the setting clip and the clip holder. Or, it is installed to be turned off, and the connection terminal is provided on the other side of the outer casing of the controller where the clip holder is not installed, while the lead wire is wired from the connection terminal along the mounting band to each acceleration sensor and installed Characterized in that, the switch means includes a push pin provided inside the central part of the setting clip and a switch button provided inside the central part of the clip holder, and presses the setting clip when fitting and assembling the setting clip and the clip holder. It is characterized in that the controller is set in the on state by the operation of pressing the switch button of the clip holder by the pin, characterized in that the sensor cover for protecting each acceleration sensor from the outside is installed on the mounting band, and each of the On the rear surface of the sensor cover, a pressure contact plate disposed obliquely from the upper end of the sensor cover to the rear lower side or from the lower end of the sensor cover to the rear upper side is installed in connection with the sensor cover with an elastic support shaft interposed. , It is characterized in that the rear surface of each sensor cover or press fit plate is a non-slip surface.

According to the present invention as described above, by installing an acceleration sensor on a ring-shaped mounting band and connecting it to a controller on the mounting band, a headband type impact sensing device is manufactured separately from the safety helmet, so that the impact sensing device is installed whenever necessary. In addition to providing an effect that can be easily installed and used on the helmet, the magnitude of the impact applied to the helmet using the acceleration sensor and the location of the wearer's head where the impact was applied, as well as the fall or fall of the wearer before and after the impact It provides an effect that can additionally determine whether or not a etc. has occurred.

As described above, by comprehensively analyzing and determining the magnitude and location of the impact applied to the helmet along with the type of accident, follow-up measures after a safety accident can be carried out more rationally and systematically. Unlike the conventional case where the sensor unit was installed integrally with the helmet, the cost of manufacturing the helmet and the maintenance (repair or replacement) of the impact sensor can be greatly reduced, while the impact sensor is discarded together when the helmet is damaged. Therefore, unnecessary economic waste is prevented, and convenience in handling and manipulating the shock sensing device can be improved.

In addition, the length of the mounting band can be adjusted using the tightening buckle, or the mounting band itself is a stretchable elastic band, and the surface of the mounting band and the controller in close contact with the safety helmet is formed as a non-slip surface. As a result, it provides an effect that the impact sensor can be installed and used more easily and firmly without being greatly restricted by the size of the helmet, and the lead wire of the acceleration sensor is wired in a zigzag waveform to ensure frequent expansion and contraction of the mounting band. It provides the effect of preventing disconnection of the lead wire and consequent failure or malfunction of the shock sensing device in spite of manipulation.

In particular, by simply assembling or separating the setting clip of the mounting band from the clip holder of the controller, the on/off operation of the controller is automatically performed, and the switch means before and after the use of the shock sensing device. While minimizing the hassle of individually manipulating the controller, it provides an effect that can fundamentally block the situation in which the shock sensor is used with the controller off and the situation in which the shock sensor is left in the on state of the controller. It maximizes convenience and efficiency according to the use of the sensing device, and at the same time provides an effect that can prevent unnecessary waste of batteries.

In addition, by using a sensor cover that protects each acceleration sensor in the form of a casing, the durability and service life of the impact sensing device can be sufficiently secured, and a pressurized contact plate is applied to the rear side of each sensor cover to secure the safety helmet. By using both the clamping force of the mounting band and the elastic repulsive force of the pressure contact plate, the shock sensing device can be installed very firmly and stably on the safety helmet, and at the same time, the pressure applied to the front side of the sensor cover This is to provide very useful effects, such as allowing the acceleration sensor to be more safely protected by properly buffering it.

1 is an external perspective view showing a state in which a headband type impact sensing device according to a first embodiment of the present invention is mounted on a safety helmet.
Figure 2 is a schematic exploded perspective view of Figure 1;
3 is an external perspective view of an impact sensing device according to a first embodiment of the present invention;
Figure 4 is a schematic wiring diagram of Figure 3;
5 is a schematic wiring diagram centering on the internal structure of the controller applied to FIG. 3;
6 is an external perspective view of an impact sensing device according to a second embodiment of the present invention;
7 is a schematic wiring diagram centering on the internal structure of the controller applied to FIG. 6;
8 is an external perspective view of an impact sensing device according to a third embodiment of the present invention;
9 and 10 are excerpted front views of main parts showing a state of expansion and contraction of the shock sensing device according to FIG. 8;
11 is an enlarged side cross-sectional view showing a state in which the impact sensing device of FIG. 8 is mounted on a helmet.
12 is an explanatory view showing a transmission method of an accident occurrence signal using the impact detection device of the present invention.

Hereinafter, the present invention for achieving the above object will be described in detail with reference to the accompanying drawings.

In the case of the safety helmet 1 used in the present invention, as shown in FIGS. 1 and 2, the cap body is primarily manufactured using a lightweight metal such as aluminum or a hard plastic or synthetic resin material, and then the cap body A cross or lattice shape that connects the hair band 5 surrounding the wearer's head along the lower inner circumference of the head and separates the wearer's crown from the cap body along the circumferential direction of the hair band 5 (井) A representative example is that the buffer band 6 is connected, and the chin strap 2 for wearing the safety helmet 1 is connected to the lower left and right sides of the cap body.

In the drawing, a tightening buckle 3 is installed on the left and right chin straps 2 to adjust the length of the chin strap 2 so that the helmet 1 can be accurately worn according to the size of the wearer's head and face, At the lower end of the left and right chin straps 2, a detachable wearing clip 4 for wearing the helmet 1 is connected and installed. In some cases, the wearing clip 4 is not used and the left and right chin straps ( 2) can be connected with one tightening buckle 3 or a method of directly binding and wearing the left and right chin straps 2 is also possible, and the tightening buckle 3 and the wearing clip 4 are also shown in the drawing Various other forms may be applied.

It is installed on the safety helmet 1 as described above to detect the impact applied to the safety helmet 1 from the outside with a sensor, and transmit an accident signal to the outside using the data input from the sensor. The first of the present invention As shown in FIGS. 1 to 5, the impact sensing device 10 according to the embodiment wraps the lower outer circumferential surface of the helmet 1 in the circumferential direction and is attached to the helmet 1 in close contact with the ring-shaped mounting band ( 11), an acceleration sensor 12 installed in a number of at least two (a total of four on the drawing) at regular intervals along the mounting band 11, and the acceleration sensor 12 Corresponds to It is made by including a controller 13 connected to the mounting band 11 and installed at an arbitrary position.

As is well known, the acceleration sensor 12 is a semiconductor sensor that outputs the magnitude and direction of acceleration applied to an object to be sensed, and its type is divided by a sensing axis ranging from one axis to three axes, Piezoresistive and capacitance types are representative examples, and the motion of the object can be more accurately detected from the tilted angle of the object to be sensed and the acceleration in each direction based on the gravitational acceleration.

Any kind of acceleration sensor can be used as long as it can achieve the above function, but it is suitable for inserting into the inside of the mounting band 11 made of a relatively soft material and having a thin thickness. It is desirable to select and use the product, and by using the principle and characteristics of the acceleration sensor 12, the size of the impact applied to the safety helmet 1 and the location of the wearer's head where the impact was applied, as well as the wearer before and after the impact It is possible to additionally determine whether or not a fall or fall has occurred.

More specifically, when an impact is applied to the helmet 1, the wearer's head oscillates with the helmet 1 in a specific direction (opposite direction to the direction in which the impact is applied) for a short time, so the acceleration at that time The magnitude and direction of the impact applied to the helmet 1 can be determined primarily by measuring the magnitude and direction with the acceleration sensor 12, and the speed of normal movement including the worker's walking and the speed of the elevator can be determined by the controller ( 13), and then, based on the speed of the control group, it is possible to additionally determine whether or not a fall or fall of the wearer occurred before or after the impact.

For example, if the safety helmet 1 is moved at a speed higher than the speed of the control group, and it is determined that an impact is applied to the safety helmet 1 at the last time, the impact after the worker falls or falls is the safety helmet 1 ), and immediately after the impact is applied to the helmet (1), the helmet (1) is moved at a speed faster than the speed of the control group, and then, if it is determined that the impact is applied again to the helmet (1) at the last point This means that the worker collapsed or fell after colliding with a falling object or structure.

Unlike this, although the safety helmet 1 was moved at a speed faster than the speed of the control group, if the situation in which the impact was applied to the safety helmet 1 was not detected before and after that time, the worker urgently left the site due to some factor Through this measurement method, the size and location of the impact applied to the helmet (1) are comprehensively analyzed and judged along with the type of accident, so follow-up measures after a safety accident are carried out more rationally and systematically It can be done.

In order to achieve the above functions more reliably, each acceleration sensor 12 is preferably installed in a minimum number of two or more with an angle range of 180 degrees along the mounting band 11, and the acceleration sensor 12 ) It can be seen that it is not desirable to set the number of installations to 8 or more when considering economics and efficiency at the same time, and even in the case of the lead wire 17 connecting each acceleration sensor 12 to the controller 13, the mounting band It is preferable to wire in a buried type along (11).

From this point of view, in the case of the mounting band 11, it is made of a flexible and tough material considering the convenience of wiring the lead wire 17 together with the acceleration sensor 12, the attachment to the safety helmet 1, and its portability at the same time. It is preferable to make a material such as rubber, synthetic resin, or fabric, and to have a thickness of about 1 to 2 mm and a width of about 3 to 5 cm for safe embedding of the acceleration sensor 12 and solid installation with the helmet 1 On the other hand, the length is preferably the same as or similar to the circumferential length of the lower outer circumferential surface of the safety helmet 1.

In addition, in the case of the controller 13, as described in the previous application, the CPU 22, the wireless transmitter 23 and the battery 21 are compactly installed inside the outer casing 20 made of plastic material It is desirable to reduce the size and weight to the maximum by integrating, and the connection terminal 16 for connecting the lead wire 17 extending from each acceleration sensor 12 to the CPU 22 is the mounting band 11 ) is provided on the left and right sides of the outer casing 20 to which both ends are connected, so that the lead wire 17 of the acceleration sensor 12 installed along the mounting band 11 is distributed to each connection terminal 16. It is preferable to divide the wiring.

In addition, the outer casing 20 of the controller 13 includes a switch button 18 as a switch means for on/off operation of the controller 13, zero point setting of the acceleration sensor 12, and transmission of an accident release signal. It is preferable to additionally provide a reset button 19 for and a connection terminal 16 for charging the battery 21, and the switch button 18, the reset button 19 and the battery 21 are input It will be connected and installed with the CPU 22 via a cable, and the connection terminal 16 for the lead wire 17 will be connected and installed with the CPU 22 by an input/output cable, and in the case of the lead wire 17, power supply and It will consist of an input/output cable for signal output, and the wireless transmitter 23 will be connected and installed with the CPU 22 by the output cable.

In addition, in the case of the charging connection terminal 16, as shown in FIG. 5, it may be connected to the battery 21 by an input cable passing through the CPU 22, or the battery 21 through the outer casing 20. ), and in the former case, the charging switch function of the battery 21 is additionally provided to the CPU 22, and the charging connection is made at any position of the outer casing 20 for the controller 13. The terminal 16 can be installed, but it can be selected from the upper or lower surface of the outer casing 20 so as not to interfere with the connection work between the mounting band 11 and the controller 13 and the wiring work of the lead wire 17. It is installed in one location, but it is preferable to block it with a watertight terminal cap 14 other than the charging operation so that external moisture does not flow through the corresponding connection terminal 16.

In the case of the reset button 19, as in the previous application, the zero point setting operation of the measurement standard by the acceleration sensor 12 is directly performed by the wearer immediately after wearing the helmet 1, and at the same time, the safety helmet 1 ) in the event that an accident signal is transmitted incorrectly due to negligence in handling, such as dropping a helmet from a high position, or if the wearer determines that there is no abnormality in his or her condition immediately after an impact is applied to the safety helmet (1), the wearer or a third party may cause an accident By immediately transmitting the release signal, it is provided to prevent unnecessary follow-up measures such as dispatching an ambulance to the scene.

It is preferable to selectively perform the zero point setting and transmission of the accident release signal as described above by pressing the reset button 19. As a representative example, the zero point setting is performed by quickly pressing the reset button 19 The accident release signal is sent out by an operation of pressing the reset button 19 for several seconds (3 to 5 seconds), and the zero point setting and accident according to the operation of the reset button 19 The sending of the release signal is performed by the CPU 22 judging the operation signal input from the reset button 19 through the input cable.

As an additional matter, the inner circumferential surface of the mounting band 11 in close contact with the outer surface of the helmet 1 and the outer casing of the controller 13 in close contact with the outer surface of the helmet 1 together with the mounting band 11 ( 20) The surface is made to be a non-slip surface 15 for preventing slipping, so that when the shock sensing device 10 according to the present invention is mounted in a headband (headband) method along the lower outer circumferential surface of the helmet 1, the impact It is preferable that the sensing device 10 is not easily separated from the safety helmet 1 and maintains a stable mounting state, and the non-slip surface 15 is preferably an embossed surface using rubber or synthetic resin having excellent frictional force.

As shown in FIGS. 6 and 7, the impact sensing device 10 according to the second embodiment of the present invention installs a tightening buckle 24 for length adjustment on the side of the mounting band 11 adjacent to the controller 13. And, a snap-type setting clip 25 that is detachably fitted and assembled with the controller 13 is connected to one end of the mounting band 11 corresponding to the position past the tightening buckle 24, and installed. On one side (left or right side) of the outer casing 20 of the controller 13, the setting clip 25 of the mounting band 11 is inserted inwardly and assembled into a clip holder 27 that is snapped and fixed. ) is provided.

Therefore, in the case of the acceleration sensor 12, it will be installed over the position excluding the length adjustment range of the mounting band 11 by the tightening buckle 24, and the connection terminal 16 is installed with the clip holder 27 On the other hand, the lead wire 17 is wired along the mounting band 11 from the corresponding connection terminal 16, and each acceleration It will be connected and installed with the sensor 12, and the rest of the configuration other than that is made the same as that of the first embodiment described above.

The tightening buckle 24, the setting clip 25, and the clip holder 27 correspond to well-known technologies widely used in bags or clothing. To briefly explain this, the tightening buckle 24 has a connection frame in the center. While having the provided square ring shape, the end side of the mounting band 11 detoured from the square ring through the setting clip 25 is bound to the central connection frame so that the length of the mounting band 11 can be adjusted. , The setting clip 25 has a locking jaw protruding from the end of the "c" shaped elastic clip that can be folded inward, and the clip holder 27 is inserted into the setting clip 25 in a fitting manner. Snap-type fastening holes 28 are formed on the upper and lower sides of the rectangular storage casing.

Using the tightening buckle 24 as described above, the length of the mounting band 11 can be appropriately adjusted according to the size of the safety helmet 1, and at the same time, one end of the mounting band 11 is pulled toward the controller 13. The setting clip 25 is inserted into the clip holder 27 so that the mounting band 11 strongly tightens the circumference of the safety helmet 1, so that the impact sensing device 10 according to the present invention is placed on the safety helmet 1. It can be installed more firmly and stably, and most preferably, the controller 13 is automatically turned on or off according to assembly or separation between the setting clip 25 and the clip holder 27.

To this end, a push pin 26 having a predetermined length is integrally formed inside the central portion of the setting clip 25, and a switch button 18 is provided inside the central portion of the clip holder 27, When the setting clip 25 and the clip holder 27 are fitted and assembled, the controller 13 is turned on by the operation of pressing the switch button 18 of the clip holder 27 by the push pin 26 of the setting clip 25. On the other hand, when the setting clip 25 and the clip holder 27 are separated, the pressing operation of the switch button 18 by the push pin 26 is released, and the controller 13 is automatically set to the off state will be.

Through the above method, while minimizing the hassle of individually manipulating the switch means before and after the use of the shock sensing device 10, the situation in which the shock sensing device 10 is used in the off state of the controller 13 and the controller It is possible to fundamentally block the situation in which the shock sensing device 10 is left in the on state of (13), and if this function can be achieved, the push pin 26 and switch button 18 method described above In addition, various types of switch means can be applied. As a simple example, a contact sensor with the setting clip 25 is installed inside the clip holder 27 to determine whether or not there is contact between the sensor and the setting clip 25. It is possible to perform the on/off operation of (13).

As shown in FIGS. 8 to 11, the impact sensing device 10 according to the third embodiment of the present invention includes the setting clip 25 and the clip holder 27, the mounting band 11 and the controller 13 ) is applied in the same way as in the second embodiment, and unlike the use of the tightening buckle 24 for length adjustment in the second embodiment, in the third embodiment, the mounting band 11 itself is stretchable (伸縮). ) It is made of an elastic band made of an available material so that its length can be adjusted, while a casing type sensor cover 30 that protects each acceleration sensor 12 from the outside along the mounting band 11 is added. it is installed

As described above, when the mounting band 11 itself is made of an elastic band made of an elastic material, the length of the shock sensing device 10 can be reduced simply by pulling the mounting band 11 to both sides as shown in FIGS. 9 and 10. can be easily adjusted according to the size of the safety helmet 1, and as soon as the corresponding shock sensing device 10 is mounted on the safety helmet 1, the mounting band 11 is each by its own elastic restoring force. Since the safety helmet 1 is tightened together with the sensor cover 30 and the controller 13 of the second embodiment, the shock sensing device 10 can be mounted on the safety helmet 1 in a more easy, robust and stable manner than in the case of the second embodiment. On the other hand, by using the sensor cover 30, durability and service life of the shock sensing device 10 can be sufficiently secured.

In the case of the lead wire 17 in the third embodiment of the present invention, disconnection between the acceleration sensor 12 and the connection terminal 16 despite frequent extension and contraction of the mounting band 11 and the resulting shock sensing device ( 10) to prevent failure or malfunction, in other words, wiring in a zigzag waveform so that the lead wire 17 can be unfolded or retracted along with the mounting band 11 along the extension direction of the mounting band 11 It is preferable, and it is advantageous to apply the previously described non-slip surface 15 to the rear surface of each sensor cover 30 in close contact with the outer surface of the helmet 1.

Even more preferably, the pressure contact is disposed on the rear surface of each of the sensor covers 30, inclined from the upper end of the sensor cover 30 to the rear lower side, or disposed inclined from the lower end of the sensor cover 30 to the rear upper side. While providing a plate 29, the upper or lower end of the pressing plate 29 is installed in connection with the sensor cover 30 with the elastic support shaft 31 interposed therebetween. In this case, the sensor The rear surface of the press plate 29, not the rear surface of the cover 30, will be formed as the non-slip surface 15.

As described above, when the pressure contact plate 29 is additionally applied to the rear side of each sensor cover 30, the tightening force of the mounting band 11 to the helmet 1 and the elastic repulsive force of the pressure contact plate 29 Together, the impact sensing device 10 can be mounted very firmly and stably on the safety helmet 1, and the impact applied to the front side of the sensor cover 30 is applied to the pressing plate 29 on the rear side. It is possible to protect the acceleration sensor 12 more safely by appropriately buffering it, and from the same point of view, in the state where the pressure contact plate 29 is laid sideways, the left or right end of the rear surface of the sensor cover 30 Of course, you can also connect them.

In addition, in the case of the elastic support shaft 31 connecting the pressure contact plate 29 to the sensor cover 30, the hinge axis penetrates along the connection between the pressure contact plate 29 and the sensor cover 30 After fixing a plurality of hinge tubes in an alternating manner, the pressure contact plate 29 and the sensor cover 30 are obliquely butted so that each hinge tube forms a series of tube lines. In the state, a typical example is a method in which a hinge shaft is inserted along a corresponding tube line in a penetrating manner, and a coil-type torsion spring is interposed between each hinge tube.

The coil-type torsion spring has a substantially "∧" shape, and as its free end is placed inside the connection between the pressure contact plate 29 and the sensor cover 30, the pressure contact plate 29 has a predetermined inclination angle. It will be made to be elastically supported toward the rear surface of the sensor cover 30, and if this function can be achieved, other various types of elastic support shaft 31 can be applied in addition to the method described above, as well as a separate It is also possible to connect the pressure contact plate 29 itself to the sensor cover 30 by using a metal plate having excellent elastic restoring force without intervening the spring means.

As an additional matter, the tightening buckle 24 for length adjustment according to the second embodiment or the sensor cover 30 of the telescopic mounting band 11 and the acceleration sensor 12 according to the third embodiment are It is revealed that it can be applied independently to the embodiment, and in FIGS. 1 and 2, the impact sensing device 10 of the present invention is installed in a work helmet 1 widely used in industrial fields, but in addition to motorcycle Of course, it can also be applied to other types of safety helmets such as helmets or leisure sports helmets.

As described above, the safety helmet (1) used for work in the industrial field and the helmet used as a motorcycle helmet or a leisure sports helmet are the type of safety accident caused by the wearer's activity place and impact from the outside, and follow-up measures after the accident There is a slight difference in the side, and accordingly, the transmission path of the accident danger signal transmitted to the outside from the wireless transmitter 23 built in the controller 13 of the shock sensing device 10 is also shown in FIG. Based on the route, it should be appropriately selected and adjusted according to the type or use of the helmet (1).

In other words, in the case of the safety helmet 1 for work used in various industrial sites, the accident signal transmitted from the wireless transmitter 23 of the controller 13 is directly transmitted to the field management office 8 of the corresponding workplace, or the wearer's It is simultaneously transmitted to the field management office (8) and the first aid center (9) through the portable terminal (7), and in the case of a helmet used as a helmet for motorcycle or leisure sports, from the wireless transmitter (23) of the controller (13). That is, the transmitted accident signal is transmitted directly to the emergency center 9 through the wearer's portable terminal 7.

The portable terminal 7 may be a representative example of a smartphone possessed by the wearer of the helmet 1, but any other type of portable terminal accompanied by delivery using a motorcycle or leisure sports activities may be applied to the smartphone app (App : Application), it can be used through synchronization with the shock sensing device 10 (Synchronization: combining and controlling two or more objects in an appropriate way to make them the same phase), and the on-site management office ( 8) and the first aid center 9 determine the signal transmitted through the wireless transmitter 23 of the shock sensing device 10 or the wearer's portable terminal 7 with an information processing device such as a computer to perform prompt first aid measures This is also a matter already mentioned in the earlier application.

According to the present invention having the configuration as described above, the acceleration sensor 12 is installed on the ring-shaped mounting band 11 and connected to the controller 13 on the mounting band 11, a headband type shock sensing device ( 10) is manufactured and placed separately from the helmet 1, so that the impact sensing device 10 can be easily mounted and used on the helmet 1 whenever necessary, and the safety helmet 1 using the acceleration sensor 12 It is possible to additionally determine whether or not a fall or fall of the wearer occurred before or after the impact, as well as the size of the impact applied to the impact and the location of the wearer's head to which the impact was applied.

As described above, by comprehensively analyzing and determining the magnitude and location of the impact applied to the helmet (1) along with the type of accident, follow-up measures after a safety accident can be carried out more rationally and systematically, and the shock detection sensor Unlike the conventional case in which the means is integrally installed with the helmet 1, the manufacturing cost of the helmet 1 and the maintenance (repair or replacement) of the impact sensing device can be greatly reduced, while the helmet 1 is damaged. It is possible to prevent unnecessary economic waste caused by disposing of the shock sensing device together, and to improve the convenience of handling and manipulating the shock sensing device.

In addition, the length of the mounting band 11 can be adjusted using the tightening buckle 24, or the mounting band 11 itself is an elastic elastic band, and the mounting band 11 in close contact with the safety helmet 1 ) and the controller 13 by forming a non-slip surface 15, it is possible to mount and use the impact sensing device 10 more easily and firmly without being greatly restricted by the size of the safety helmet 1, and the acceleration sensor The lead wire 17 of (12) is wired in a zigzag waveform so that the disconnection of the lead wire 17 and the resulting failure or malfunction of the shock sensing device 10 do not occur despite frequent stretching and contraction of the mounting band 11. can avoid

In particular, by simply assembling or separating the setting clip 25 of the mounting band 11 from the clip holder 27 of the controller 13, the on/off operation of the controller 13 is automatically performed. While minimizing the hassle of individually manipulating switch means before and after the use of the sensing device 10, the situation in which the shock sensing device 10 is used in the off state of the controller 13 and the shock in the on state of the controller 13 A situation in which the sensing device 10 is left unattended can be fundamentally blocked, thereby maximizing convenience and efficiency according to the use of the shock sensing device 10 and simultaneously preventing unnecessary waste of the battery 21 .

In addition, by using the sensor cover 30 that protects each acceleration sensor 12 in the form of a casing, durability and service life of the shock sensing device 10 can be sufficiently secured, and each sensor cover 30 By applying the pressure contact plate 29 to the rear side, the shock sensing device 10 is connected to the safety helmet 1 by using both the clamping force of the mounting band 11 to the helmet 1 and the elastic repulsive force of the pressure contact plate 29. At the same time, the pressure applied to the front side of the sensor cover 30 can be adequately buffered from the rear side to protect the acceleration sensor 12 more safely. There is.

1: safety helmet 2: chin strap 3,24: tightening buckle
4: wearing clip 5: hair band 6: buffer band
7: Portable terminal 8: On-site management office 9: Emergency center
10: shock sensing device 11: mounting band 12: acceleration sensor
13: controller 14: terminal cap 15: non-slip surface
16: connection terminal 17: lead wire 18: switch button
19: reset button 20: outer casing 21: battery
22: CPU 23: wireless transmitter 25: setting clip
26: push pin 27: clip holder 28: fastening hole
29: pressing plate 30: sensor cover 31: elastic support shaft

Claims (12)

In the impact detection device for a hard hat installed in a hard hat to detect an impact applied to the hard hat from the outside with a sensor, while processing data input from the sensor in the CPU of the controller to transmit an accident signal to a wireless transmitter,
The impact sensing device includes a ring-shaped mounting band wrapped around the lower outer circumferential surface of the helmet in a circumferential direction and installed in close contact with the helmet, and acceleration sensors installed in at least two numbers at regular intervals along the mounting band, The controller is installed in connection with the mounting band at an arbitrary position between the acceleration sensor,
The CPU and the wireless transmitter are built into the outer casing of the controller together with the battery, and the CPU accelerates each acceleration by a lead wire wired along the mounting band from a connection terminal provided on the left or right side of the outer casing or at a location selected from among them. While connected to the sensor, the outer casing is provided with a switch means for on/off operation of the controller,
A casing-type sensor cover for protecting each acceleration sensor from the outside is installed on the mounting band, and the rear surface of each sensor cover in close contact with the outer surface of the helmet is disposed inclined from the upper end of the sensor cover to the rear lower side, A pressure contact plate is provided that is inclined from the lower end of the sensor cover to the rear upper side, while the upper or lower end of the pressure contact plate is connected to the sensor cover with an elastic support shaft interposed therebetween. Detachable headband type shock sensor. The method of claim 1, wherein the outer casing of the controller is installed in close contact with the outer surface of the helmet together with the mounting band, and a non-slip surface is provided on the outer casing surface of the controller and the inner surface of the mounting band in close contact with the outer surface of the helmet A headband-type impact sensing device that is detachable from the helmet, characterized in that. The headband-type impact sensing device detachable from a helmet according to claim 1, wherein a reset button connected to a CPU is provided on the outer casing of the controller to set the zero point of the acceleration sensor and transmit an accident release signal. . The method of claim 1, wherein a connection terminal for charging the battery is provided on the upper or lower surface of the outer casing of the controller, and a watertight terminal cap is detachably fitted to the connection terminal. Detachable headband type shock sensor. The method of claim 1, characterized in that a tightening buckle for length adjustment is connected to and installed on the mounting band on the side of the mounting band adjacent to the controller, and the acceleration sensor is installed over a position excluding the length adjustment range of the mounting band by the tightening buckle. A headband-type impact sensor that can be attached to and detached from a hard hat. [Claim 2] The headband-type impact sensor detachable from a safety helmet according to claim 1, wherein the mounting band is an elastic band made of an elastic material, and the lead wire is wired in a zigzag waveform along the mounting band. Device. According to any one of claims 1 to 6, a snap-type setting clip that is detachably fitted and assembled with the controller is connected to one end of the mounting band, and the left or right side of the outer casing of the controller is connected to the mounting band. A clip holder is provided in which the setting clip is assembled by inserting it inward and is fixed with a snap.
The switch means is installed to turn on or off the controller according to assembly or separation between the setting clip and the clip holder, and the connection terminal is provided on the right or left side of the outer casing of the controller where the clip holder is not installed. The lead wire is wired from the corresponding connection terminal along the mounting band to connect and install with each acceleration sensor. The method of claim 7, wherein the switch means includes a push pin provided inside the central portion of the setting clip and a switch button provided inside the central portion of the clip holder, and when the setting clip and the clip holder are fitted and assembled, the setting clip A headband-type impact sensing device detachable from a helmet, characterized in that the controller is set to an on state by the operation of pressing the switch button of the clip holder by the push pin. delete delete delete The headband-type impact sensing device detachable from the helmet according to any one of claims 1 to 6, wherein the rear surface of the pressure contact plate in close contact with the outer surface of the helmet is a non-slip surface.

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