JP6588255B2 - Buckle and seat belt device provided with the same - Google Patents

Description

  The present invention belongs to the technical field of a buckle used in a seat belt device or the like and the technical field of a seat belt device provided with the buckle.

  In the seats of various transportation facilities including automobiles, seat belt devices are used to restrain inertial movement by restraining passengers with seat belts in an emergency when a large deceleration is applied to the vehicle, such as a collision. It is attached. Such a seat belt apparatus is generally fixed to the seat belt and a tongue while the tongue is inserted and locked in order to simplify the operation of mounting the seat belt by the occupant. Has a buckle.

  As a buckle used in a conventional seat belt device, when a tongue is inserted, a latch member that enters the locking hole of the tongue and locks to the tongue, and a spring attached when the latch member is locked to the tongue. A latch member locking member that moves by force and locks the latch member in the latching position of the tongue, and unlocks the latch member by the latch member locking member and allows the latch member to escape from the latching hole of the tongue; There are many known buckles that include at least a release operation member that releases the engagement with the tongue, and an ejector that presses the tongue in a direction to release the buckle when the release operation member releases the engagement between the latch member and the tongue. (For example, refer to Patent Document 1).

  In a seat belt device provided with this type of buckle, the tongue is locked to the buckle by inserting the tongue into the buckle and locking the latch member to the tongue when the seat belt is attached to the occupant. Thus, the seat belt is attached to the occupant, and the occupant is restrained by the seat belt in the above-described emergency, so that the inertial movement thereof is suppressed. In addition, when the seat belt is released from the occupant, the release operation member is pressed by the occupant, so that the latch member is unlocked from the tongue.

  In such a buckle, a so-called illuminated buckle provided with a light source such as an LED in the buckle is known so that an occupant can easily see the tongue insertion port at night. In the illuminated buckle, a printed circuit board and an LED as a light source are fixed in the buckle corresponding to both side portions of the tongue insertion opening.

  In such a conventional illuminated buckle device, for example, when an occupant sits on the seat, the LED of the buckle device is activated to emit light, and the insertion port of the buckle body is illuminated through the light guide, so that the occupant can easily do this. Can be visually recognized.

  Conventionally, as one type of seat belt device, there is an air belt device in which a belt expands in an emergency (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 5-15813 JP2015-39945A

However, there is no conventional buckle that incorporates an inflator of an air belt device and that stores light components such as LEDs and emits light.

  The present invention has been made in view of such circumstances, and an object of the present invention is to be able to easily and accurately grasp the position of the buckle, and to incorporate a buckle incorporating an inflator of an air belt device, and It is providing a seatbelt apparatus provided with this.

In order to solve the above-mentioned problem, the buckle according to the present invention is:
A support member;
A case covering the support member;
A lock portion to which the supported by the support member is covered by the case, to lock or release the tongue to be inserted,
An inflator for air belt that expands in an emergency that are covered by the supported by the support member and the casing,
An illumination unit that is supported by the support member and the case and emits light to the outside;
Equipped with a,
An insertion port for the tongue is formed between the case and the lock part,
The illumination unit includes a base unit,
The base unit is
A light emitting unit that emits light;
A plate to which the light emitting unit is attached;
Have
The plate is attached to the support member in parallel to the tongue insertion port,
The inflator is installed along a longitudinal direction of the plate from a side of the tongue insertion opening .

In the buckle according to the present invention,
The illumination unit is
A light emitting unit that emits light;
A diffusion unit for diffusing the light emitted by the light emitting unit;
It is characterized by having.

In the buckle according to the present invention,
The illuminating unit illuminates both ends of the tongue insertion port formed between the case and the lock unit.

In the buckle according to the present invention,
The illuminating unit illuminates a transmission portion indicating the air belt.

In the buckle according to the present invention,
The illumination unit has an illumination switch that moves in response to the attachment / detachment of the tongue,
In the state where the tongue is not inserted, the lighting switch turns on the light emitting unit,
In the state where the tongue is inserted, the lighting switch turns off the light emitting unit.

Further, the seat belt device according to the present invention includes:
A seat belt retractor that winds up the seat belt;
A tongue slidably supported on a seat belt pulled out from the seat belt retractor;
The buckle with which the tongue is detachably engaged;
At least.

According to the buckle according to the present invention having such a configuration,
A support member;
A case covering the support member;
A lock portion to which the supported by the support member is covered by the case, to lock or release the tongue to be inserted,
An inflator for air belt that expands in an emergency that are covered by the supported by the support member and the casing,
An illumination unit that is supported by the support member and the case and emits light to the outside;
Equipped with a,
An insertion port for the tongue is formed between the case and the lock part,
The illumination unit includes a base unit,
The base unit is
A light emitting unit that emits light;
A plate to which the light emitting unit is attached;
Have
The plate is attached to the support member in parallel to the tongue insertion port,
Since the inflator is installed along the longitudinal direction of the plate from the side of the tongue insertion port,
The position of the buckle can be easily and accurately grasped, and the buckle can be configured to be small and thin while incorporating the inflator of the air belt device.

Moreover, according to the buckle according to the present invention,
The illumination unit is
A light emitting unit that emits light;
A diffusion unit for diffusing the light emitted by the light emitting unit;
So that
It becomes possible to diffuse light efficiently.

Moreover, according to the buckle according to the present invention,
Since the illumination unit illuminates both ends of the tongue insertion port formed between the case and the lock unit,
The passenger can easily see the tongue insertion port.

The buckle according to the present invention is
Since the illuminating unit illuminates a transmission part indicating the air belt,
It is possible to visually recognize that the occupant is an air belt.

The buckle according to the present invention is
The illumination unit has an illumination switch that moves in response to the attachment / detachment of the tongue,
In the state where the tongue is not inserted, the lighting switch turns on the light emitting unit,
With the tongue inserted, the lighting switch turns off the light emitting unit,
The passenger can easily see the tongue insertion port at night or the like.

Further, the seat belt device according to the present invention includes:
A seat belt retractor that winds up the seat belt;
A tongue slidably supported on a seat belt pulled out from the seat belt retractor;
The buckle with which the tongue is detachably engaged;
At least
The number of parts of the buckle can be reduced, and it can be easily and accurately assembled and manufactured. As a result, the seat belt device can be easily and accurately assembled and manufactured.

The perspective exploded view of the buckle concerning the present invention is shown. The front view of the buckle which concerns on this invention is shown. The state by which the board | substrate unit was supported by the supporting member of the buckle which concerns on this invention is shown. FIG. 3 shows a partial cross-sectional view of a buckle according to the present invention. 1 shows a reflector of a buckle according to the present invention. The switch of the illumination part of the buckle concerning this invention shows the state of ON. The switch of the illumination part of the buckle which concerns on this invention is shown in the state of OFF. The front view of the buckle of other embodiment which concerns on this invention is shown. The front view of the buckle of other embodiment which concerns on this invention is shown. It is a figure showing typically a seat belt device provided with an example of buckle 10 concerning the present invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 shows a perspective exploded view of a buckle 10 according to the present invention. FIG. 2 shows a front view of the buckle 10 according to the present invention. FIG. 3 shows a state in which the substrate unit 22 is supported by the support member 11 of the buckle 10 according to the present invention. FIG. 4 shows a partial cross-sectional view of the buckle 10 according to the present invention.

  The buckle 10 includes a support member 11, a case 12 that covers the support member 11, a lock portion 13 that is supported by the support member 11 and that is covered by the case 12 to lock or release a tongue that will be described later, and an air belt (not shown) that expands in an emergency. And an illuminating unit 20 that illuminates both ends of a tongue insertion port 15 formed between the case 12 and the lock unit 13.

  The support member 11 supports the lock unit 13, the inflator 14, and the illumination unit 20, and is covered with the case 12. Further, a tongue insertion port 15 is formed between the case 12 and the lock portion 13.

  The case 12 covers the support member 11, the lock part 13, the inflator 14, and the illumination part 20. The case 12 has a lock cover portion 12a that covers the lock portion 13, an inflator cover portion 12b that covers the inflator 14, and an opening 12c. The release button 13a of the lock portion 13 is exposed from the opening 12c.

  The lock portion 13 forms an insertion port 15 in the gap between the opening 12a of the case 12 and the release button 13a. The insertion port 15 is a part for inserting a tongue. A lock plate (not shown) is disposed in the lock portion 13, and engages with a tongue inserted from the insertion port 15 to prevent its extraction.

The release button 13a is always urged in a direction protruding from the case 12, and the locking of the tongue by the lock plate is released by pushing the release button 13a. The lock unit 13 is provided with an illumination switch 21 that is turned on / off in response to the insertion / removal of the tongue. The illumination switch 21 is included in the illumination unit 20.

  The support member 11 supports the base unit 22 of the illumination unit 20. The base unit 22 includes a first LED 22a and a second LED 22b that are turned on or off in response to turning on and off of the lighting switch 21, and a plate 22c to which the first LED 22a and the second LED 22b are attached. The first LED 22a and the second LED 22b are connected to a plate wiring portion (not shown) formed on the plate 22c by printing or the like. When the illumination switch 21 is turned on, the plate wiring portion is connected to the support member side wiring portion 23 connected to the power source or the like via the illumination switch 21. Accordingly, the first LED 22a and the second LED 22b are energized.

  In the present embodiment, the plate 22c of the base unit 22 is formed in a Y shape. The first LED 22a and the second LED 22b are attached to two Y-shaped protrusions 22d. Further, the wiring portion of the plate 22c is covered with a cover 26 and protected from liquid and foreign matter.

  As described above, the illumination unit 20 includes the plate 22c to which the first LED 22a and the second LED 22b are attached. The plate 22c is attached to the support member 11 in parallel to the tongue insertion port 14, and thus the buckle 10 is small and thin. It becomes possible to comprise.

  FIG. 5 shows the reflectors 24, 25 of the buckle 10 according to the present invention.

  The first light emitted from the first LED 22a is reflected and diffused by the first reflector 24 and irradiated from the first irradiation surface 24a. The second light emitted from the second LED 22b is reflected and diffused by the second reflector 25 and irradiated from the second irradiation surface 25a. The first reflector 24 and the second reflector 25 are respectively formed with a concave first diffusion surface 24b and a second diffusion surface 25b so as to be sufficiently diffused. The 1st reflector 24 and the 2nd reflector 25 are arrange | positioned corresponding to the width direction both ends of the insertion port 15. FIG. The first reflector 24 and the second reflector 25 constitute a first diffusion part and a second diffusion part, respectively.

  FIG. 6 shows a state where the switch 21 of the illumination unit 20 of the buckle 10 according to the present invention is ON. FIG. 7 shows a state where the switch 21 of the illumination unit 20 of the buckle 10 according to the present invention is OFF.

  An illumination switch 21 is movably disposed on the support member 11. When the tongue is inserted, the illumination switch 21 is pressed by this and moves along the longitudinal direction of the support member 11. And when the illumination switch 21 moves, ON / OFF changes, and it has the structure where lighting and extinction of 1st LED22a and 2nd LED22b are switched.

  For example, as shown in FIG. 6A, in a state where no tongue is inserted, as shown in FIG. 6B, the illumination switch 21 is in an ON state, and the first LED 22a and the second LED 22b are lit. Yes.

  As shown in FIG. 7A, in the state where the tongue is inserted, as shown in FIG. 7B, the illumination switch 21 is in the OFF state, and the first LED 22a and the second LED 22b are turned off. .

  As described above, the illumination unit 20 includes the illumination switch 21 that moves in response to the attachment / detachment of the tongue. When the tongue is not inserted, the illumination switch 21 turns on the first LED 22a and the second LED 22b, Since the lighting switch 21 turns off the first LED 22a and the second LED 22b in the inserted state, the occupant can easily see the tongue insertion port 15 at night or the like.

  FIG. 8 shows a front view of a buckle 10 according to another embodiment of the present invention.

  In the conventional buckle device, it is difficult to understand the display indicating that the buckle is for an air belt.

  The buckle 10 of the embodiment shown in FIG. 8 has a structure in which the letters “AIR BELT” are lit without using the reflectors 24 and 25 shown in FIG. 2. For example, a transmission part 27 as a diffusion part indicating that the belt is an air belt with the letters “AIR BELT” may be formed, and a light emitting part such as an LED may be disposed on the back side. The characters may be katakana.

  Thus, since the illumination part 20 illuminates the transmission part 27 which shows that it is an air belt, it becomes possible for a passenger | crew to visually recognize that it is an air belt easily.

  In addition, you may form the permeation | transmission part 27 which shows that it is an air belt with the pattern etc. which show the expanded air belt instead of a character.

  FIG. 9 shows a front view of a buckle 10 according to another embodiment of the present invention.

  The buckle 10 of the embodiment shown in FIG. 9 has a structure that shines the reflectors 24 and 25 shown in FIG. 2 and also shines the letters “AIR BELT”. For example, the structure for illuminating the reflectors 24, 25 may be the structure of the buckle 10 shown in FIGS. 1 to 7, and in addition, the letters “AIR BELT” are formed by the transmissive member 27 as the diffusing portion, What is necessary is just to arrange light emission parts, such as LED.

  Next, an example in which the buckle 10 according to the present invention is applied to a vehicle seat belt device will be described.

  FIG. 10 is a diagram schematically illustrating a seat belt device including an example of the buckle 10 according to the present invention.

  As shown in FIG. 10, the seat belt device 1 of this example is basically the same as a conventionally known three-point seat belt device. In the figure, 1 is a seat belt device, 2 is a vehicle seat, 3 is a seat belt retractor disposed in the vicinity of the vehicle seat 2, 4 is retractably wound around the seat belt retractor 4, and a belt anchor 4 a at the tip is A seat belt including an air belt (not shown) fixed to the floor of the vehicle body or the vehicle seat 2 and inflated in an emergency, 5 is a guide anchor for guiding the seat belt 4 pulled out from the seat belt retractor 3 toward the shoulder of the occupant, 6 A tongue 7 slidably supported on the seat belt 4 guided from the guide anchor 5 is a buckle 10 fixed to the floor of the vehicle body or the vehicle seat and detachably inserted into the tongue 6. The seatbelt 4 mounting operation and mounting release operation in the seatbelt apparatus 1 are the same as those of a conventionally known seatbelt apparatus. The seat belt device 1 using the buckle 10 according to the present invention is preferably used particularly for a dark rear seat.

In the buckle 10 having the above-described configuration, the number of parts can be reduced, and the assembly can be easily and accurately manufactured. As a result, the seat belt device can be easily and accurately assembled and manufactured. Further, for example, the first LED 22a and the second LED 22b shown in FIG. 7B of the buckle 10 are operated so as to emit light in conjunction with the state where the ignition switch of the vehicle is turned on or the state where the passenger is seated on the seat. Set to. When the first LED 22a and the second LED 22b emit light, the insertion opening 15 of the case 12 is illuminated through the reflectors 24 and 25. Accordingly, the occupant can easily see the insertion port 15 and the tongue 6 shown in FIG.
5 can be easily inserted. When the tongue 6 is inserted from the insertion port 15 of the buckle 10 into the interior, the illumination switch 21 is moved and turned OFF, and the first LED 22a and the second LED 22b are turned off.

  As described above, according to the buckle 10 of the present embodiment, the support member 11, the case 12 covering the support member 11, and the lock that is supported by the support member 11 and covered by the case 12 and locks or releases the tongue 6 to be inserted. Part 13, an inflator 14 for an inflatable belt supported by the support member 11 and covered by the case 12, and an illumination unit 20 that is supported by the support member 11 and the case 12 and emits light to the outside. The position of the buckle 10 can be easily and accurately grasped, and the inflator 14 of the air belt device can be incorporated.

  Moreover, according to the buckle 10 of the present embodiment, the illumination unit 20 includes the first LED 22a and the second LED 22b that emit light, the first reflector 24 and the second reflector 25 that diffuse the light emitted by the first LED 22a and the second LED 22b, and Therefore, it is possible to diffuse light efficiently.

  Further, according to the buckle 10 of the present embodiment, the illumination unit 20 illuminates both ends of the insertion port 15 of the tongue 6 formed between the case 12 and the lock unit 13, so that the occupant can easily perform the tongue insertion port. 15 can be visually recognized.

  Further, according to the buckle 10 of the present embodiment, the illuminating unit 20 illuminates the transmissive portion 27 indicating that it is an air belt, so that the occupant can easily recognize that it is an air belt.

  Further, according to the buckle 10 of the present embodiment, the illumination unit 20 includes the base unit 21 to which the LED 22 a is attached, and the base unit 21 is attached to the support member 11 in parallel to the insertion port 15 of the tongue 6. Therefore, the buckle 10 can be configured to be small and thin.

  Moreover, according to the buckle 10 of the present embodiment, the illumination unit 20 includes the illumination switch 21 that moves in response to the attachment / detachment of the tongue 6, and the illumination switch 21 is the first LED 22 a in a state where the tongue 6 is not inserted. In the state where the second LED 22b is turned on and the tongue 6 is inserted, the lighting switch 21 turns off the first LED 22a and the second LED 22b, so that the passenger can easily see the tongue insertion port 15 at night or the like. It becomes possible.

  Furthermore, according to the seatbelt device 1 of the present embodiment, the seatbelt retractor 3 that winds up the seatbelt 4, the tongue 6 that is slidably supported by the seatbelt 4 pulled out from the seatbelt retractor 3, and the tongue 6 includes at least a buckle 10 that is detachably engaged with each other. Therefore, the number of parts of the buckle 10 can be reduced, and assembly and manufacture can be easily and accurately performed. As a result, the seat belt device 1 can be easily and accurately manufactured. Can be assembled and manufactured.

  INDUSTRIAL APPLICABILITY The buckle and seat belt device of the present invention can be suitably used for a buckle in which a passenger visually recognizes a tongue insertion port at night or the like, and a vehicle seat belt device provided with this buckle.

DESCRIPTION OF SYMBOLS 1 ... Seat belt apparatus, 3 ... Seat belt retractor, 4 ... Seat belt, 6 ... Tongue,
DESCRIPTION OF SYMBOLS 10 ... Buckle, 11 ... Support member, 12 ... Case, 13 ... Lock part, 14 ... Inflator, 15 ... Insert, 20 ... Illumination part, 21 ... Illumination switch, 22 ... Base unit, 22a, 22b ... LED (light emission part) )

Claims (6)

A support member;
A case covering the support member;
A lock portion to which the supported by the support member is covered by the case, to lock or release the tongue to be inserted,
An inflator for air belt that expands in an emergency that are covered by the supported by the support member and the casing,
An illumination unit that is supported by the support member and the case and emits light to the outside;
Equipped with a,
An insertion port for the tongue is formed between the case and the lock part,
The illumination unit includes a base unit,
The base unit is
A light emitting unit that emits light;
A plate to which the light emitting unit is attached;
Have
The plate is attached to the support member in parallel to the tongue insertion port,
The buckle, wherein the inflator is installed along a longitudinal direction of the plate from a side of the tongue insertion opening . The illumination unit may buckle according to claim 1, wherein the light emitting portion and having a diffusing part for diffusing light emitted. The buckle according to claim 2, wherein the illuminating unit illuminates both ends of the tongue insertion port formed between the case and the lock unit. The buckle according to claim 2, wherein the illuminating unit illuminates a transmission portion indicating the air belt. The illumination unit has an illumination switch that moves in response to the attachment / detachment of the tongue,
In the state where the tongue is not inserted, the lighting switch turns on the light emitting unit,
The buckle according to any one of claims 1 to 4 , wherein the lighting switch turns off the light emitting unit in a state in which the tongue is inserted. A seat belt retractor that winds up the seat belt;
A tongue slidably supported on a seat belt pulled out from the seat belt retractor;
The buckle according to any one of claims 1 to 5 , wherein the tongue is detachably engaged.
A seatbelt device comprising:

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