KR101752805B1 - Seatbelt Fastening Detecting Apparatus by Drawing Quantity of Webbing and Retractor for Seatbelt Having the Same - Google Patents

Seatbelt Fastening Detecting Apparatus by Drawing Quantity of Webbing and Retractor for Seatbelt Having the Same Download PDF

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Publication number
KR101752805B1
KR101752805B1 KR1020160012715A KR20160012715A KR101752805B1 KR 101752805 B1 KR101752805 B1 KR 101752805B1 KR 1020160012715 A KR1020160012715 A KR 1020160012715A KR 20160012715 A KR20160012715 A KR 20160012715A KR 101752805 B1 KR101752805 B1 KR 101752805B1
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KR
South Korea
Prior art keywords
seat belt
photosensor
webbing
spool
present
Prior art date
Application number
KR1020160012715A
Other languages
Korean (ko)
Inventor
허우영
Original Assignee
주식회사 우신세이프티시스템
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Priority to KR1020160012715A priority Critical patent/KR101752805B1/en
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Publication of KR101752805B1 publication Critical patent/KR101752805B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/18—Anchoring devices
    • B60R22/26—Anchoring devices secured to the seat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/34—Belt retractors, e.g. reels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H21/00—Gearings comprising primarily only links or levers, with or without slides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R22/00—Safety belts or body harnesses in vehicles
    • B60R22/48—Control systems, alarms, or interlock systems, for the correct application of the belt or harness
    • B60R2022/4808—Sensing means arrangements therefor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Automotive Seat Belt Assembly (AREA)

Abstract

The seat belt wear detection apparatus according to the present invention may further include a rotation lever provided on an automatic lock device provided at one side of the spool, a rotation lever provided in the automatic lock device and rotated in association with rotation of the spool, A gear plate rotatable to rotate the rotation lever in a state in which the webbing wound around the spool is drawn out by a predetermined length, and a first sensing unit for recognizing the rotation state of the rotation lever by the gear plate.

Description

TECHNICAL FIELD [0001] The present invention relates to a seat belt wear detection device for determining a webbing withdrawal amount and a retractor for a seat belt including the webbing withdrawal amount detection device,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a seat belt wear detection device and a retractor for a seat belt including the same, and more particularly, And a retractor for a seat belt including the same.

When a person is riding on a vehicle or an apparatus, various safeguards are provided in order to prevent the person aboard from colliding with the vehicle or other object from leaving the vehicle or apparatus.

Typically, a seat belt is used to stably fix the lower abdomen and the chest of a person aboard the vehicle or mechanism using the seat belt. Therefore, the seat belt prevents the driver's body from being separated from the vehicle when colliding with the vehicle or with another object, thereby securing safety.

However, many drivers are avoiding the normal wearing of the seat belt due to the pressure feeling. In recent years, when a seat belt is not worn, a continuous alarm sound is generated. Therefore, various dodging actions such as fastening a dummy to a buckle for fastening the seat belt or pulling the seat belt backward to the back of the driver ' .

Such a circumventive action has a problem in that it can not be detected by a seat belt fastening determination method in which a fastening state of a tongue and a buckle is sensed.

Therefore, a method for solving such problems is required.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a seat belt wear detection apparatus capable of detecting various seat belt engagement avoidance actions by a highly reliable method.

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

According to another aspect of the present invention, there is provided a seat belt wear detection apparatus comprising: a rotation lever provided on an automatic locking device provided at one side of a spool; A gear plate rotatably coupled to the spool, the gear plate being rotated to rotate the rotation lever in a state in which the webbing wound around the spool is drawn out by a predetermined length, and a gear member for recognizing the rotation state of the rotation lever by the gear plate 1 sensing unit.

The gear plate may include a step portion that pushes and rotates the rotation lever in a state in which the webbing is drawn out by a predetermined length.

The rotation lever may include a first protrusion protruding in the gear plate direction and pushed by the gear plate in a state in which the webbing is drawn out by a predetermined length to rotate the entire rotation lever, And a second protrusion protruding from the first sensing portion to recognize the rotation of the rotation lever by the gear plate.

The second projection may be provided with an identification means, and the first sensing unit may be formed in the form of recognition means for identifying the identification means.

The first sensing portion may be formed in the form of a switch that is pressed by the second projection when the rotation lever is rotated by the gear plate.

According to another aspect of the present invention, there is provided a seat belt wear detection apparatus for detecting a webbing retraction amount of a webbing according to the present invention, the webbing retractor comprising: a rotary disk having a plurality of through- And a second sensing unit for recognizing the hole, sensing the rotation number of the rotation disk, and determining the amount of webbing taken up by the spool.

The second sensing unit may include a first photosensor that recognizes the through holes and a second photosensor that is spaced apart from the first photosensor and recognizes through holes recognized by the first photosensor and other through holes can do.

And the second photosensor may be positioned over a part of the other through holes in a state in which the first photosensor overlaps the entire area of one through hole.

According to another aspect of the present invention, there is provided a seat belt wear detection apparatus for detecting a webbing pull-out amount according to the present invention, comprising: a spool having a laterally extending extension portion for winding webbing; A restoring spring for restoring the spool by rotating the spool in a direction opposite to the rotating direction of the spool, and a third sensing unit connected to the extending portion and measuring torque of the restoring spring as the webbing is pulled out.

In order to solve the above-mentioned problems, the seat belt wear detection device according to the present invention for judging the amount of webbing withdrawal and the seat belt retractor including the same have the following effects.

First, since it is determined whether or not the driver wears a seat belt based on the amount of webbing taken out, it is possible to detect the avoidance action such as tightening the dummy or pulling the seat belt backward to the back of the driver ' .

Secondly, there is an advantage that the safety of the driver can be ensured by performing the alarm when the seat belt is worn in an inappropriate manner.

Third, there is an advantage that the amount of webbing can be determined by various methods.

Fourth, there is an advantage that the structure is simple and can be easily applied to a conventional retractor.

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

1 is a view showing a pull-out region of a webbing;
2 and 3 are views showing a retractor to which a seat belt wear detection device according to a first embodiment of the present invention is applied;
4 is a view showing a structure of a gear plate and a rotation lever in a seat belt wear detection apparatus according to a first embodiment of the present invention;
5 and 6 are views illustrating a driving process of the seat belt wear detection apparatus according to the first embodiment of the present invention;
FIGS. 7 and 8 are views illustrating a driving process of the seat belt wear detection apparatus according to the second embodiment of the present invention;
9 is a view illustrating a seat belt wear detection apparatus according to a third embodiment of the present invention;
10 and 11 are views showing a detection principle of the seat belt wear detection device according to the third embodiment of the present invention; And
12 is a view illustrating a seat belt wear detection apparatus according to a fourth embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In describing the present embodiment, the same designations and the same reference numerals are used for the same components, and further description thereof will be omitted.

The seat belt wear detection apparatus according to the present invention uses a method of judging whether or not the seat belt is worn by judging whether or not the seat belt is worn by detecting whether or not the tongue and the buckle are fastened, do.

Such a method can reliably detect the avoidance action such as fastening the dummy or pulling the seat belt to the rear of the driver ' s body and fastening the seat belt in a reliable manner, thereby guiding the driver to wear the seat belt and securing safety .

1, when pulling out the webbing 10 from the retractor 1, it is possible to set a predicted minimum draw range for fastening the seat belt.

That is, the first take-off range (R 1) until the possible determined that not a sufficient take-made for the fastening of the seat belt, and the first take-off range of the second take-off range beyond the (R 1) of the webbing (10) (R 2 ) Is carried out, it can be judged that sufficient drawing for the fastening of the seat belt has been performed.

When such a method is used, it is possible to easily detect the above-described seat belt wear avoidance actions. For example, when the dummy is fastened to the buckle, the webbing 10 is not pulled out at all. Therefore, it can be determined that the seat belt is not properly fastened, and the seat belt is taken out to the back of the driver's body The webbing 10 can not be pulled out to the second take-out range R2 in the case where the tongue and the buckle are fastened, so that it can be determined that the seatbelt is not properly fastened.

Accordingly, the present invention performs various feedback functions, such as an alarm, thereby guiding the driver to wear the normal seat belt, thereby securing safety.

Meanwhile, various methods can be applied as a method of determining the amount of webbing 10 drawn out. Hereinafter, specific embodiments implemented to determine the amount of webbing 10 taken out will be described.

2 and 3 are views showing a retractor 1 to which a seat belt wear detection apparatus according to a first embodiment of the present invention is applied.

As shown in FIGS. 2 and 3, the seat belt wearing sensor according to the first embodiment of the present invention is provided on the side of the automatic locking device 100 provided at one side of the spool 20.

The automatic locking device 100 includes various assemblies for stopping the rotation of the spool 20 in various situations, and the seat belt wearing device according to the present embodiment can be used to determine the amount of webbing taken out in conjunction therewith can do.

The seat belt wear detection apparatus according to the present embodiment includes a gear plate 120, a rotation lever 130, and a first sensing unit 135 included in the automatic locking apparatus 100.

The gear plate 120 is connected to the spool 20 by various gears such as a reduction gear 110 and is rotated together with the rotation of the spool 20.

The rotation lever 130 is rotatably provided in the automatic locking device 100 and rotates by the gear plate 120 in a state in which the webbing wound around the spool 20 is drawn out by a predetermined length, .

At this time, the first sensing unit 135 recognizes the rotation state of the rotation lever 130 by the gear plate 120.

FIG. 4 is a view showing the structure of the gear plate 120 and the rotation lever 130 in the seat belt wear detection apparatus according to the first embodiment of the present invention, and FIGS. 5 and 6 are views showing the first embodiment FIG. 2 is a view illustrating a driving process of the seat belt wear detection apparatus according to an example.

FIG. 4 is a rear view of the gear plate 120 and the rotation lever 130 (not shown in FIGS. 2 and 3). Referring to FIG. 4, the gear plate 120 has a webbing And a stepped portion 123 for pushing and rotating the rotation lever 130 in the state of FIG.

That is, when the spool 20 is rotated by the pulling-out of the webbing, the gear plate 120 interlocked with the spool 20 is rotated in one direction, and then the stepped portion 123 is rotated And the rotation lever 130 is rotated.

At this time, the rotation lever 130 may include a first protrusion 131 and a second protrusion 132.

The first protrusion 131 protrudes in the direction of the gear plate 120 and is pushed by the step portion 123 of the gear plate 120 in a state in which the webbing is drawn out by a predetermined length, And rotates the entire rotation lever 130 in the same state as the rotation lever 130.

The second protrusion 132 protrudes in a direction different from the first protrusion 131. When the rotation lever 130 is rotated by the gear plate 123, the second protrusion 132 is rotated together with the rotation lever 130, And recognizes the rotation of the first sensor 135 by the first sensing unit 135.

In this embodiment, the second protrusion 132 is provided with an identification means 133, and the first sensing unit 135 is formed in the form of recognition means for identifying the identification means 133.

5, when the rotation lever 130 is not rotated, the identification unit 133 and the first sensing unit 135 are shifted from each other, and the rotation lever 130, as shown in FIG. 6, The identification unit 133 and the first sensing unit 135 are overlapped with each other so that the first sensing unit 135 can sense the identification unit 133. [

Accordingly, the first sensing unit 135 can determine that the rotation lever 130 is rotated by the gear plate 120, and can determine that the webbing is drawn to such an extent that the driver can wear the seat belt have. In this state, when the tongue is fastened to the buckle, it can be recognized that the seat belt is completely fastened.

Meanwhile, the identification unit 133 and the first sensing unit 135 may be formed in various forms. In the present embodiment, the identification means 133 and the first sensing unit 135 are formed in the form of a magnet and a Hall sensor, respectively. However, the identification means 133 is not limited to the QR code, the RFID, And various sensors corresponding to the identification means 133 such as a photosensor, a vision sensor, and a scanner may be applied to the first sensing unit 135. [

7 and 8 are views illustrating a driving process of the seat belt wear detection apparatus according to the second embodiment of the present invention.

The second embodiment of the present invention shown in Figs. 7 and 8 is the same as the first embodiment described above. However, in this embodiment, the first sensing unit 140 is formed in the form of a switch that is pressed by the second protrusion 132 when the rotation lever 130 is rotated by the gear plate 120 different.

That is, in this embodiment, a switch that is physically pressed by the rotation lever 130 is used. Here, the first sensing unit 140 may include a fixing unit 141 and a button unit 142.

Also, in this embodiment, it is possible to judge that the webbing is sufficiently drawn out as the button portion 142 is pressed by the second projecting portion 132.

FIG. 9 is a view showing a seat belt wear detection apparatus according to a third embodiment of the present invention, and FIGS. 10 and 11 show the detection principle of the seat belt wear detection apparatus according to the third embodiment of the present invention FIG.

In the case of the third embodiment of the present invention shown in Figs. 9 to 11, the method is completely different from the first embodiment and the second embodiment described above. Specifically, the seat belt wear detection apparatus according to the present embodiment includes a rotating disk 150 and second sensing units 154a and 154b.

The rotary disc 150 is provided at one side of the retractor and is rotatable together with the rotation of the spool, and a plurality of through holes 152 are formed along the circumference.

The second sensing units 154a and 154b may recognize the number of revolutions of the rotary disk 150 by recognizing the through holes 152 of the rotary disk 150. [

That is, the second sensing units 154a and 154b can calculate the number of rotations of the spool according to the number of rotations of the rotating disk 150, thereby indirectly determining the amount of webbing taken out.

Specifically, in the present embodiment, the second sensing units 154a and 154b include a first photosensor 154a that recognizes the through holes 152, and a second photosensor 154b that is spaced apart from the first photosensor 154a, And a second photo sensor 154b for recognizing the through hole 152 recognized by the photo sensor 154a and the other through hole 152. [

10, when the first photosensor 154a is overlapped with the entire area of one of the through holes 152, the second photosensor 154b is part of the other through holes 152 Area. ≪ / RTI >

The reason for doing this is to make it possible to determine the direction of rotation of the spool. That is, when the rotary disk 150 is rotated in the clockwise direction with reference to the direction of FIG. 10, the second photosensor 154b is overlapped with the passage holes 152 before the first photosensor 154a 11A). When the rotating disk 150 is rotated in the counterclockwise direction, the first photosensor 154a overlaps the through hole 152 more than the second photosensor 154b (Corresponding to B in Fig. 11).

Therefore, the rotation direction of the spool can be determined by such a difference. The present invention can accurately determine the amount of webbing to be taken out by dividing whether the webbing is in a drawn state or in a wound state.

12 is a view illustrating a seat belt wear detection apparatus according to a fourth embodiment of the present invention.

The fourth embodiment of the present invention shown in Fig. 12 can determine the amount of webbing taken out in a manner different from each of the above-described embodiments. The seat belt wear detection apparatus according to the present embodiment includes a spool 20, a restoring spring (not shown), and a third sensing unit 30. [

The spool 20 includes a laterally extending extension portion 22 and the third sensing portion 30 is connected to the extension portion 22. When the webbing is pulled out in such a state, the restoring spring will apply an external force in a direction opposite to the rotating direction of the spool 20 due to the pulling-out of the webbing.

At this time, the torque applied to the restoring spring is changed according to the amount of the webbing drawn, and the third sensing unit 30 measures the torque of the restoring spring as the webbing is pulled out.

That is, in the case of this embodiment, the amount of webbing taken out can be determined by measuring the torque of the restoring spring for restoring the spool 20, and thus it is possible to judge whether or not the seat belt is fastened.

It will be apparent to those skilled in the art that the present invention can be embodied in other specific forms without departing from the spirit or scope of the invention as defined in the appended claims. It is obvious to them. Therefore, the above-described embodiments are to be considered as illustrative rather than restrictive, and the present invention is not limited to the above description, but may be modified within the scope of the appended claims and equivalents thereof.

1: Retractor 10: Webbing
20: spool 22: extension part
30: Third sensing unit 100: Automatic locking device
110: reduction gear 120: gear plate
123: step 130: rotation lever
131: first protrusion 132: second protrusion
133: Identification means 135, 140:
141: fixing part 142: button part
150: rotating disk 152: through hole
154a: first photosensor 154b: second photosensor

Claims (10)

delete delete delete delete delete A rotary disk rotated with rotation of the spool, the rotary disk having a plurality of through holes formed along the periphery thereof; And
A second sensing unit for recognizing the passage hole to sense the rotation number of the rotating disk and determining a drawing amount of the webbing wound on the spool;
/ RTI >
Wherein the second sensing unit comprises:
A first photosensor that recognizes the through holes; And
A second photosensor spaced apart from the first photosensor and recognizing a through hole different from the through hole recognized by the first photosensor;
Wherein the second photosensor is positioned so as to extend over only a part of the other through-holes in a state in which the first photosensor overlaps the entire one of the through-holes, Wherein the spool rotation direction and the webbing take-up / take-up state are further determined through the overlapping sequence of the first photosensor and the second photosensor and the passing hole. delete delete delete A retractor for a seat belt, comprising the seat belt wear detection device of claim 6.
KR1020160012715A 2016-02-02 2016-02-02 Seatbelt Fastening Detecting Apparatus by Drawing Quantity of Webbing and Retractor for Seatbelt Having the Same KR101752805B1 (en)

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KR1020160012715A KR101752805B1 (en) 2016-02-02 2016-02-02 Seatbelt Fastening Detecting Apparatus by Drawing Quantity of Webbing and Retractor for Seatbelt Having the Same

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102047101B1 (en) * 2019-06-04 2019-11-20 (주)디에스테크니카 Seat belt wearing induction system
KR20200004476A (en) * 2018-07-03 2020-01-14 (주) 하나텍시스템 Device for detecting belt of wheel chair fixing apparatus and warning system therewith

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000085530A (en) * 1998-09-14 2000-03-28 Nippon Seiko Kk Retractor for seat belt
KR200250420Y1 (en) * 2001-07-05 2001-11-16 김경근 Encoder
KR100527127B1 (en) * 2003-07-23 2005-11-09 현대자동차주식회사 Device for controlling the length of seat belt automatically
KR101477615B1 (en) * 2013-03-12 2014-12-31 주식회사 우신세이프티시스템 Retractor for seat belt being able to check installation of child seat

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000085530A (en) * 1998-09-14 2000-03-28 Nippon Seiko Kk Retractor for seat belt
KR200250420Y1 (en) * 2001-07-05 2001-11-16 김경근 Encoder
KR100527127B1 (en) * 2003-07-23 2005-11-09 현대자동차주식회사 Device for controlling the length of seat belt automatically
KR101477615B1 (en) * 2013-03-12 2014-12-31 주식회사 우신세이프티시스템 Retractor for seat belt being able to check installation of child seat

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200004476A (en) * 2018-07-03 2020-01-14 (주) 하나텍시스템 Device for detecting belt of wheel chair fixing apparatus and warning system therewith
KR102118188B1 (en) * 2018-07-03 2020-06-03 (주)하나텍시스템 Device for detecting belt of wheel chair fixing apparatus and warning system therewith
KR102047101B1 (en) * 2019-06-04 2019-11-20 (주)디에스테크니카 Seat belt wearing induction system

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