JP2015209155A - Seat belt device and seat belt system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt device and a seat belt system capable of reducing attachment time of a seat belt and improving an attachment rate of the seat belt.SOLUTION: A seat belt device comprises: a seat belt (14); a buckle part (17) engaging with a tongue (16) attached to the seat belt (14); a light source part installed on the buckle part (17); and a seating sensor (15) for detecting that an occupant seats his/herself on a seat. The light source part emits light when the seating sensor (15) detects that the occupant seats his/herself on the seat.

Description

  The present invention relates to a seatbelt device and a seatbelt system that reduce the wearing time of a seatbelt and improve the wearing rate.

  A seat belt device is installed in a vehicle seat, restrains the occupant with a belt, prevents the occupant from jumping out of the seat even when the traveling state of the vehicle changes suddenly, and ensures the safety of the occupant. Are known.

  This seat belt device is generally installed in each seat in a vehicle, and a tongue held by the belt is engaged with a buckle. The buckle is disposed on either the left or right side of the seat near the boundary between the seating surface and the backrest. Therefore, when a plurality of seats such as a rear seat of the vehicle are adjacent to each other, a plurality of buckles may be installed between the seats. In such a case, the passenger cannot determine to which buckle the tongue should be engaged, and sometimes it takes time to install the seat belt.

Therefore, in the prior art disclosed in Patent Document 1, the color of the buckle installed in each seat is made different, and the tongue of the seat belt of each seat is colored in the same color as the color of the buckle.
In the prior art disclosed in Patent Document 2, fluorescent paints having different colors for each seat are applied to the tongue 71 and the buckle 73 of the seat belt of each seat and are engaged with each other as shown in FIG. Protrusions 75 having the same shape such as a round shape, a triangular shape, and a quadrangular shape are formed on the tongue and the buckle so that the passenger can easily determine the buckle to which the tongue should be engaged.

JP 2010-155560 A JP 2010-215145 A

  However, the seat belt device described in Patent Document 1 and Patent Document 2 is provided with a tongue and a vehicle as long as the passenger compartment is bright, such as when the passenger gets on the vehicle while the vehicle is parked outdoors during the daytime. Although the colors and protrusions applied to the buckle can be visually recognized, it is difficult for the passenger to visually recognize these colors and protrusions when the vehicle interior is dark, such as at night or indoor parking lots. Therefore, it does not necessarily contribute to shortening the seat belt wearing time and improving the seat belt wearing rate.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a seat belt device and a seat belt system capable of reducing the seat belt wearing time and improving the seat belt wearing rate. is there.

In order to achieve the above-described object, the seat belt device according to the present invention is characterized by the following (1) to (4).
(1) a seat belt;
A buckle portion engaged with a tongue attached to the seat belt;
A light source unit installed in the buckle unit;
A seating sensor for detecting that a passenger is seated in the seat,
The light source unit emits light when the seating sensor detects the seating of a passenger.
(2) A seat belt device having the configuration of (1) above,
A light guide unit configured to guide light emitted from the light source unit to emit light in the vicinity of the insertion port of the buckle unit;
(3) A seatbelt device having the above configuration (1) or (2),
The light source unit stops light emission when the tongue engages with the buckle unit when the light source unit is in a light emitting state.
(4) A seat belt device having the configuration of (1) to (3) above,
Installed in the rear seat of the vehicle.

  According to the seat belt device having the configuration (1), when the occupant is seated, the seating sensor installed on the seat detects the seating of the occupant. The light source unit emits light when the seating sensor detects the seating of the passenger. Thereby, the passenger can identify the buckle portion to which the tongue should be engaged. Therefore, the occupant can shorten the wearing time of the seat belt. Moreover, since the light emission from the buckle urges the passenger to wear the seat belt, the seat belt wearing rate can be improved. Furthermore, since the buckle portion emits light when the occupant gets on board, a sense of luxury and hospitality can be produced.

  According to the seat belt device having the configuration (2), the light emitted from the light source unit is guided by the light guide unit and emitted from the insertion port of the buckle unit. Therefore, the occupant can identify not only the buckle portion to which the tongue is to be engaged, but also the position where the tongue is inserted. Therefore, the occupant can further shorten the wearing time of the seat belt.

  According to the seat belt device having the above configuration (3), when the occupant wears the seat belt, the light emission in the light source unit stops, so that the power consumption can be reduced and the light emission stops when the seat belt is completely installed. As a result, the effect of prompting the user to wear the seat belt can be increased.

  According to the seat belt device of the configuration (4), the tongue is inserted even when the seats are adjacent to each other and the buckle portion corresponding to the seat on which the passenger is seated is difficult to distinguish. Since the buckle to be emitted emits light, the passenger can quickly wear the seat belt.

In order to achieve the above-described object, the seat belt system according to the present invention is characterized by the following (5) to (6).
(5) A seat belt having a seat belt, a buckle portion that engages with a tongue attached to the seat belt, a light source portion provided in the buckle portion, and a seating sensor that detects that a passenger is seated. The device is a seat belt system provided for each seat,
When any of the seating sensors detects that a passenger is seated, the light source unit of the seat belt device corresponding to the seat provided with the seating sensor is turned on.
(6) A seat belt system having the configuration of (5) above,
The seat belt device further includes a control unit that controls turning on and off of the light source unit,
The control unit controls to turn on the light source unit of the seat belt device corresponding to the seat provided with the seating sensor when it is determined that a passenger is seated based on a signal output from the seating sensor. To do.

  According to the seat belt system configured as described above in (5) and (6), in a vehicle having a plurality of seat belt devices, the light source unit can be turned on and off according to the seating position of the passenger. .

  According to the seat belt device and the seat belt system of the present invention, the seat belt wearing time can be shortened and the seat belt wearing rate can be improved.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a schematic diagram showing a seat belt device installed in each seat of a vehicle. FIG. 2 is a block diagram showing the configuration of the seat belt system. FIG. 3 is a schematic view showing a buckle portion of the seat belt device. FIG. 4 is a schematic diagram of the seat belt device described in Patent Document 2. As shown in FIG.

  Specific embodiments relating to the present invention will be described below with reference to the drawings.

  A configuration example of the seat belt system 1 in the present embodiment is shown in FIG. In the present embodiment, the case where the seat belt devices 10L, 10C, and 10R constituting the seat belt system 1 are installed in the rear row seat 12 of the vehicle will be described, but the present invention can also be applied to the front row seat and other seats. It is.

The seat belt devices 10L, 10C, and 10R include seating sensors 15L, 15C, and 15R embedded in the seat bodies 13L, 13C, and 13R of the left seat, the center seat, and the right seat constituting the rear row seat 12, and the seat belt. 14 includes a buckle portion 17L, 17C, and 17R to which a tongue 16 attached to 14 is engaged, and a control portion 21 shown in FIG.
The seating sensors and buckles installed in the left seat, the center seat, and the right seat have the same configuration. Therefore, in the following description, if there is no need to distinguish between them, the seat The belt device 10, the seat body 13, the seating sensor 15, and the buckle portion 17 will be described. In the following description, the case where the seat belt device 10 includes the control unit 21 will be described. However, the control unit 21 may be a control system independent of the seat belt device 10.

  The seating sensor 15 is configured by a known pressure sensor, and outputs a seating signal indicating that a passenger is seated on the seat to the control unit 21. This seating signal includes a signal for identifying the seat on which the passenger is seated. The seating sensor 15 is not limited to the sensor embedded in the seat body 13, and is configured by, for example, an optical camera or an infrared camera that is installed on the ceiling in the vehicle and detects that a passenger is seated in each seat. May be.

  As shown in FIG. 3, the buckle unit 17 includes an insertion port 22 into which the tongue 16 is inserted, a known light source unit 23 including an LED, a bulb, an EL (Electro-Luminescence), and the like, and a light source unit 23. The light guide 25 that guides the emitted light of the light and emits light around the insertion port 22 and the engagement sensor 27 that detects that the tongue 16 is inserted into the buckle 17 and engaged (see FIG. 2). And.

  As shown in FIG. 2, the seat belt device 10 includes a seating sensor 15, a buckle unit 17, and a control unit 21 connected to various sensors (not shown). The control unit 21 has a CPU, a ROM, a RAM, and an input / output interface, and is configured by a microcomputer. The CPU controls the light source unit 23 based on information input from various sensors and programs and data stored in advance in the ROM, and switches between emission and stop of light.

  The control unit 21 is connected to the engagement sensor 27, and receives a signal indicating that the tongue 16 is engaged with the buckle unit 17 from the engagement sensor 27.

  As shown in FIG. 3, the buckle portion 17 has a receiving portion 29 into which the tongue 16 is inserted from the insertion port 22. The receiving portion 29 is configured by a known member such as a plate member or a lock member. The light source unit 23 is installed in the case 31 on the side opposite to the insertion port 22 with respect to the receiving unit 29.

  The light guide unit 25 is made of a known light guide member such as an acrylic resin, guides the emitted light from the light source unit 23 along the inner wall of the case 31 of the buckle unit 17, and compares the guided light. Light is emitted from an end 33 formed in a U shape around the inlet 22. Note that the shape of the end portion 33 is not limited to a U-shape, and may be a shape that allows the position of the insertion port 22 to be recognized. Therefore, the end portion 33 may have an I shape along one surface of the case, an L shape along two surfaces, or a shape along two parallel surfaces. Moreover, the shape which encloses the insertion port 22 annularly may be sufficient. 3 shows a case where the cross-sectional shape perpendicular to the depth direction in the depth direction of the light guide portion 25 is the same as the shape of the end portion 33, the shape of the light guide portion 25 is Any shape that can guide the light emitted from the light source 23 to the end 33 may be used.

  In the seatbelt device 10 having such a configuration, when the control unit 21 acquires a seating signal from the seating sensor 15, the control unit 21 determines in which seat the passenger is seated based on the seating signal. Then, the control unit 21 controls the light source unit 23 of the buckle unit 17 corresponding to the seat on which the passenger is seated, and causes the light source unit 23 to emit light. The emitted light is guided by the light guide unit 25 and is emitted from the end 33 formed around the insertion port 22. Therefore, a passenger seated in the seat can easily recognize which tongue 16 of the seat belt 14 should be inserted into any buckle portion 17 regardless of the lightness and darkness of the interior of the vehicle, and shorten the time required for wearing the seat belt 14. can do.

  When the control unit 21 determines that the tongue 16 is engaged with the buckle unit 17 based on a signal input from the engagement sensor 27, the control unit 21 controls the light source unit 23 of the seat to stop the light emission. Therefore, the occupant visually recognizes the continuation of light emission by the light guide unit 25 until the seat belt 14 is worn, and the user is prompted to wear the seat belt 14. As a result, the wearing rate of the seat belt 14 is improved. In addition, since the light guide unit 25 emits light around the insertion port 22, it is possible to give the passenger a sense of quality and hospitality. The control unit 21 may turn off the light source unit 23 after a predetermined time has elapsed since it was determined that the tongue 16 was engaged with the buckle unit 17, and conversely while the passenger is seated. The lighting by the light source unit 23 may be continued.

  In the above description, the seat belt system 1 has one control unit 21, and the control unit 21 determines which seating sensor 15L, 15C, 15R has received a signal, and the determined seating sensor 15L. The case where the light source unit 23 provided in the buckle portions 17L, 17C, 17R of the seats corresponding to 15C, 15R is turned on has been described. However, the vehicle may include an independent seat belt device 10 for each seat. In this case, the control unit 21 is installed in each seat and is connected to a seating sensor embedded in the seat body of the seat and a buckle unit corresponding to the seat.

  Moreover, although the above description demonstrated the case where the emitted light from the light source part 23 was light-guided to the insertion port 22 by the light guide part 25, it is not limited to this, LED etc. are directly around the insertion port 22 The light source unit 23 may be arranged.

  Here, the features of the above-described embodiments of the seat belt device and the seat belt system according to the present invention are briefly summarized and listed in the following [1] to [6], respectively.

[1] A seat belt (14);
A buckle portion (17) engaged with a tongue (16) attached to the seat belt (14);
A light source part (23) installed in the buckle part (17);
A seating sensor (15) for detecting that a passenger is seated in the seat,
The light source unit (23) emits light when the seating sensor (15) detects the seating of a passenger. The seat belt device (10).

[2] The light guide unit (25) further guides light emitted from the light source unit (23) to emit light near the insertion port (22) of the buckle unit (17). 1] The seat belt device (10) according to 1).

[3] The light source unit (23) stops light emission when the tongue (16) engages with the buckle unit (17) when the light source unit (23) is in a light emitting state. The seat belt device (10) according to [2].

[4] The seat belt device (10) according to any one of [1] to [3], wherein the seat belt device (10) is installed in a rear seat (rear row seat 12) of the vehicle.

[5] A seat belt (14), a buckle portion (17) engaged with a tongue (16) attached to the seat belt (14), and a light source portion (23) provided in the buckle portion (17) And a seatbelt device (10) having a seating sensor (15) for detecting that a passenger is seated is a seatbelt system (1) provided for each seat,
When any of the seating sensors (15) detects that a passenger is seated, the light source unit (23) of the seat belt device (10) corresponding to the seat provided with the seating sensor (15). The seat belt system (1), characterized in that lights up.

[6] The seat belt device (10) further includes a control unit (21) that controls lighting and extinction of the light source unit (23),
When the control unit (21) determines that a passenger is seated based on a signal output from the seating sensor (15), the seat belt device corresponding to the seat provided with the seating sensor (15) The seat belt system (1) according to the above [5], wherein the light source unit (23) of (10) is controlled to be turned on.

DESCRIPTION OF SYMBOLS 1 Seat belt system 10 Seat belt apparatus 12 Back row seat 13, 13L, 13C, 13R Seat main body 14 Seat belt 15, 15L, 15C, 15R Seating sensor 16 Tongue 17, 17L, 17C, 17R Buckle part 21 Control part 22 Entrance 23 light source part 25 light guide part 29 receiving part 31 case 33 end part

Claims (6)

Seat belts,
A buckle portion engaged with a tongue attached to the seat belt;
A light source unit installed in the buckle unit;
A seating sensor for detecting that a passenger is seated in the seat,
The light source unit emits light when the seating sensor detects the seating of a passenger. The seat belt device according to claim 1, further comprising a light guide unit that guides light emitted from the light source unit to emit light in the vicinity of the insertion port of the buckle unit. 3. The seat belt device according to claim 1, wherein the light source unit stops light emission when the tongue engages with the buckle unit when the light source unit is in a light emitting state. The seatbelt device according to any one of claims 1 to 3, wherein the seatbelt device is installed in a rear seat of the vehicle. A seat belt apparatus comprising: a seat belt; a buckle portion that engages with a tongue attached to the seat belt; a light source portion provided in the buckle portion; and a seating sensor that detects that a passenger is seated. A seat belt system provided for each seat,
When any of the seating sensors detects that a passenger is seated, the light source unit of the seatbelt device corresponding to the seat provided with the seating sensor is turned on. The seat belt device further includes a control unit that controls turning on and off of the light source unit,
The control unit controls to turn on the light source unit of the seat belt device corresponding to the seat provided with the seating sensor when it is determined that a passenger is seated based on a signal output from the seating sensor. The seat belt system according to claim 5, wherein

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