JP2009056836A - Occupant restraint system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To repeatedly perform operation to restrain and hold an occupant on a seat beforehand when a collision is predicted during traveling and securely restrain the occupant on the seat when a collision occurs. <P>SOLUTION: Base plates 44 holding air bags 43 and operable by a drive mechanism are provided inside side part bolsters 5 of a driver seat. When a control part 12 receives collision prediction information from a distance measuring sensor 16, the base plates 44 are protruded from the front faces of the side part bolsters 5 by the operation of the drive mechanism. In addition, when the control part 12 receives collision detection information within a predetermined time, a gas compressor generates gas to inflate the air bags 43 so as to restrain the body of the occupant. When the control part 12 receives the collision prediction information and does not receive the collision detection information within the predetermined time, the base plates 44 are stored again inside the side part bolsters 5 by the operation of the drive mechanism based on an operation command from the control part 12, so as to return to a normal driving state. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an occupant restraint device, and in particular, when various collision modes of an automobile are predicted before the occurrence, and when a collision is predicted, the occupant can be repeatedly held in advance in the seat, and when the collision occurs, The present invention relates to an occupant restraint device that can be restrained by a seat.

  When the occurrence of an accident is predicted by the operation of a collision prediction sensor such as a range sensor installed in various parts of the vehicle (hereinafter referred to as “prediction time or prediction state”), Various occupant restraint devices that can be in a restraint preparation state have been developed. In this type of occupant restraint device, when a collision does not occur, the restraint device such as the airbag does not operate, and only the restraint device containing the airbag or the like is in a ready state. It returns to the storage state and normal operation is possible.

  The applicant has proposed an occupant protection device that inflates and deploys an airbag in advance as a collision-predicted state when a side collision is predicted using a radar sensor during normal safe driving (patent) Reference 1). In this occupant protection device, the airbag mounted in the seat back can be reversibly operated between the normal accommodation state and the collision preparation state at the time of prediction. In other words, when a vehicle side collision is predicted by a radar sensor, the airbag stored in the bolster located on the side of the seat is expanded and inflated in advance to be ready for collision, and then generated. To prepare for a collision. On the other hand, if the collision does not occur after the collision is predicted, the airbag can be returned to the normal accommodation state in the seat back side member to prepare for the next collision prediction.

  Further, as a collision mode, an invention has been proposed in which a support member is provided on the upper part of the seat back so as to prevent the passenger from jumping upward in a rollover or a side collision (Patent Document 2). In the invention disclosed in Patent Document 2, when a collision is detected, the support members housed on both shoulder portions of the headrest on the seat seat back side protrude from the shoulder position of the occupant, and a plurality of multi-joints The fingers are bent so that the occupant's shoulder is held by the support member to restrain the occupant from moving forward.

JP 2006-176074 A JP 2004-34837 A

  By the way, since the airbag apparatus disclosed by patent document 1 is equipped in the seat back side surface, when the possibility of a side collision and rollover arises, or when actually detecting a collision, it is assumed that it functions. is doing. Therefore, the occupant cannot be restrained to the seat in all types of collisions. Moreover, in the prior art disclosed in Patent Document 2, when a collision is actually detected, the support member that operates like a hand functions to restrain only the position of the occupant's shoulder. Therefore, in order to restrain the movement of the entire upper body of the occupant with the shoulder restrained, there are many parts that depend on the restraint by the conventional seat belt device. Therefore, the object of the present invention is to solve the problems of the conventional technology described above, and in the event of a collision prediction, the occupant is restrained in advance in the seat, so that the occupant is restrained more reliably at the time of actual collision, and collision is avoided. An object of the present invention is to provide an occupant restraint device in which the restraint device is reset to the initial position and the restraint function can be exhibited again.

  In order to achieve the above object, the present invention detects a state of approach between a vehicle and a collision object, outputs a collision prediction information, detects a collision between the collision object and the collision detection information. A collision detection sensor that outputs a front side of the side bolster by a drive mechanism, and a re-accommodating airbag holding means that is accommodated in the side bolster of the seat back, and a front end of the airbag holding means. An occupant restraint device comprising: a supported airbag; a gas supply unit that inflates and deploys the airbag; and a control unit that controls the operation of the drive mechanism and the operation of the gas supply unit. When the control unit receives collision prediction information from the distance measuring sensor, the bag holding means protrudes from the front surface of the side bolster by the operation of the drive mechanism in response to an operation command from the control unit. When the unit receives the collision prediction information and receives the collision detection information within a predetermined time, the gas generating means receives an operation command from the control unit to generate gas and inflate the airbag to When the control unit receives the collision prediction information and does not receive the collision detection information within a predetermined time, the airbag holding means is operated by the operation command from the control unit. Re-contained in the side bolster in operation.

  It is preferable that the airbag holding means has a plate shape that can be slid and protruded from the side bolster by the drive mechanism having an airbag that can be inflated and contracted at a distal end portion.

  A shoulder holding arm is rotatably supported on the upper part of the seat back on both sides of the headrest at the upper part of the seat back, and an airbag is installed in the shoulder holding arm. It is preferable to inflate and restrain the occupant's shoulder.

  Of the shoulder holding arms, it is preferable that a seat belt pull-out port is provided at a base portion on the vehicle center side, and a retractor is provided in the seat back.

  The shoulder holding arm rotates from the initial state that does not prevent the occupant's seating to the occupant's shoulder after detection of the occupant's seating. It is preferable to hold the position with a gap.

  The seat belt is supported so that the seat end portion can move in the front-rear direction of the seat along a slide portion formed on the seat side portion, and a buckle device is provided on the other surface side portion of the seat. It is preferable to support it so that it can move synchronously.

  The gas supply means is preferably a compressor pump capable of supplying gas from a gas source provided in the seat to the airbag.

  In addition to the airbag holding means described above, an airbag is accommodated in the side bolster of the seat, and upon receipt of the collision detection information, the airbag in the side bolster is inflated and the side bolster is raised. The lower limbs of the occupant are restrained.

  In this occupant restraint device, in order to improve seat mounting, a seat belt drawer port is provided at the base of the headrest of the upper seat back on the vehicle center side, and the seat back side part on the drawer side is rotatable. The supported armrest is formed with a seat belt guide portion that is slidable in the longitudinal direction of the armrest, and the end portion of the seat is supported so as to be movable in the longitudinal direction of the seat along the slide portion formed on the side of the seat. The buckle device is supported on the other surface side of the seat so as to be movable in synchronization with the movement of the end of the seat.

  As described above, according to the present invention, when the seat belt is worn, the seat belt passing mechanism is operated so that the seat belt can be easily worn. In addition, the upper body and the lower limbs can be reliably restrained, and when the collision is avoided, each restraint part is reset to the initial position, and the restraint function can be exhibited again. In addition, there is an effect that it is possible to easily attach the seat belt in the shoulder belt and waist belt.

  Hereinafter, as the best mode for carrying out the occupant restraint device of the present invention, the following embodiments will be described with reference to the accompanying drawings.

  Hereinafter, the occupant restraint device 10 of the present invention will be described with reference to the drawings. FIG. 1 shows an embodiment in which an occupant restraint device 10 of the present invention is applied to a single seat 1 (captain seat, hereinafter simply referred to as a seat). The figure is a perspective view of the seat 1 as viewed from the center side of the passenger compartment. The seat 1 itself is formed such that the bolster 5 projects from both sides of the seat 2 and the seat back 3. A seat back 3 that can be reclined with respect to the seat 2 is formed integrally with the headrest 4. The occupant restraint device 10 incorporates a seat belt mounting mechanism 20 and an airbag device 40 described later as mechanisms. Hereinafter, the characteristic structure in the passenger | crew restraint apparatus 10 of this invention is demonstrated.

[Configuration and operation of seat belt mounting mechanism]
The occupant restraint device 10 of the present invention incorporates a retractor (not shown) on the center side of the passenger compartment in the seat back 3, and a seat belt outlet 7 covered by the cover 6 is provided above the seat back 3. The seat belt 22 fed out from the outlet is fixed to the buckle device 25 at a predetermined position, so that normal seat belt mounting is performed. The seat belt 22 is provided on a side surface of the seat seat portion 2 from a retractor (not shown) installed in the seat back 3 at a root portion on the inner side (vehicle compartment center side) of a shoulder holding arm 30 (FIG. 1, described later). It is spanned between the sheet fixing unit 24 supported by the slide track groove 23 formed. At that time, the seat belt mounting mechanism 20 is provided so that the seat belt can be mounted more easily.

  As shown in FIGS. 1 to 3, the seat belt mounting mechanism 20 includes a movable waist belt fixing unit 24 and a buckle device 25 fixing unit provided on the side of the seat bolster 5. The waist belt fixing unit 24 and the fixing unit 24 of the buckle device 25 include a slide track groove (FIGS. 1 and 2) in which a slider (not shown) constituting a part of each is formed on the side surface of the bolster 5. The slide track groove 23 is slid in the front-rear direction according to an operation command from the control unit 12 based on the seating information of the occupant D obtained from the seat weight sensor 11 via a drive mechanism (not shown). It has become.

  Specifically, in FIG. 1, in the initial state where the occupant D is not seated, the shoulder holding arm 30 described later is in a state where the front portion of the arm 31 faces obliquely upward around the fulcrum of the base portion of the arm 31. is there. From this initial state, as shown in FIG. 2, when the occupant D (driver: FIG. 1 and others exemplify the driver's seat) is seated, the seat weight sensor 11 installed in the seat portion 2 The seating of the occupant D is detected, and the drive motor is actuated by an operation command from the control unit, and the slider of the waist belt fixing end 24 and the slider of the fixing unit of the buckle device 25 move forward along the slide track groove. In this state, as shown in FIGS. 2 and 3, the tongue 26 temporarily held at a predetermined position of the seat belt 22 is attached to the buckle device 25 on the right side of the seat. At this time, a sensor is provided in the buckle device 25. When the sensor detects that the tongue is locked by a buckle holding claw (not shown), the slider of the waist belt fixing end and the fixing portion 24 of the buckle device 25 are fixed. The slider moves backward along the slide track groove. The reverse amount is determined according to the body shape of the occupant D. Specifically, the waist belt moves backward to a position where it is detected that the waist belt has lightly touched the waist of the occupant D.

[Configuration and operation of shoulder holding arm]
The shoulder holding arm 30 accommodates an occupant restraint member rotatably supported at an end of a support rod provided in the headrest 4, and a tubular airbag 32 (see FIG. 5) accommodated in the arm 31. . By inflating and deploying the airbag 32, the front position of the clavicle is restrained from the shoulder of the occupant D, and the upper body of the occupant D is held on the seat back 3 side. In the initial state, that is, when the occupant D is not sitting, the shoulder holding arm 30 positioned at the upper part of the seat is set to an initial state in which the shoulder holding arm 30 is directed obliquely upward by a drive mechanism (described later) incorporated therein. ing.

  In the initial state, as shown in FIG. 1, the arm 31 is in a position rotated obliquely upward around the support point serving as the base portion, and does not interfere with the occupant D sitting. When the occupant D is seated, the arm 31 is rotated forward about the fulcrum by the seat weight sensor, and the non-contact sensor 33 located on the lower surface of the arm 31 detects the occupant D at an angle that does not contact the body. Stop. FIG. 3 is a front view of the state shown in FIG. When the occupant D is seated in this way, the shoulder holding arm 30 has come down to the shoulder position of the occupant D, so the shoulder of the occupant D is in a state of being restrained to the extent that it does not hinder driving.

  At the time of collision prediction and collision detection, as will be described later, the shoulder holding arm 30 moves slightly outward and rotates upward by a predetermined angle, so that the airbag 32 bulges from the lower surface of the arm 31 and the occupant The shoulder portion of D can be constrained (see FIG. 5).

  That is, when the occupant D is seated on the seat 1, the seat weight sensor 11 built in the seat 2 of the seat 1 detects the seating of the occupant D, and the control unit 12 receives the detection signal and the control unit 12 is positioned on the shoulder. The drive arm (see FIGS. 9 and 10) is operated to move the holding arm 30 to the position of the shoulder of the occupant D, and the holding arm 30 is pivoted to fall forward. A sensor 33 is attached to the tip of the shoulder holding arm 30. The sensor 33 detects the position of the shoulder of the occupant D in a non-contact state, and holds the shoulder at a position where the shoulder of the occupant D is not touched. The arm 30 can be stopped. 2 and 3, when the occupant D pulls the tongue 26 located on the side of the seat belt 22 to the position of the buckle device 25 on the opposite side when the arm 31 is lowered, the seat The seat belt 22 is pulled out by a predetermined length from a retractor (not shown) in the back 3, and the waist belt and the shoulder belt are hung so as to cover the front surface of the occupant D. When the occupant D detects that the tongue is securely attached to the buckle device 25, the control unit 12 moves the fixing unit 24 that supports the other end anchor of the seat belt 22 toward the seat back 3 as shown in FIG. Draw. As a result, the occupant D's waist belt and shoulder belt are worn to such an extent that the waist position and chest position of the occupant D are not tight.

[Configuration and operation of airbag device]
FIG. 5 is a perspective view schematically showing a state in which the occupant restraint device 10 of the present invention functions all airbag groups equipped at the time of collision prediction and collision detection.
The present invention functions as a restraining device, and is built in the bolster 5 of the seat back 3 and the airbag 32 built in the shoulder holding arm 30 described above, and the base portion projects to the side of the occupant D at the time of collision prediction, The body restraint airbag device 40 in which the airbag 43 is inflated at that position and the seat bolster 5 is built in, and restrains the thigh of the occupant D from both sides and the upper part at the time of collision prediction and collision detection. And a thigh restraint device 50 having an airbag 53 that prevents the submarine phenomenon of the occupant D during a frontal collision. The configuration and operation of each airbag device will be described below with reference to the drawings.

(Torso-restrained airbag device)
5 and 6 show a state in which each airbag device mounted on the seat restrains the occupant D from the side surface when a collision prediction is detected during driving. FIG. 6 is a front view thereof. Among these, the structure and function of the body part restraining airbag device 40 built in the seat back 3 will be described with reference to FIGS. 7 and 8.

  FIG. 7 is a cross-sectional plan view of the vicinity of the trunk of the occupant D shown in FIG. 6 (the occupant D viewed from above is indicated by phantom lines for reference). As shown in FIG. 7, the occupant D holds the body while leaning against the back cushion 41 of the seat back 3 and the left and right bolsters 5 while being restrained by a seat belt 22 (not shown). As shown in FIG. 7, the back cushion 41 of the seat back 3 is covered with a U-shaped resin shell 42 with a secured seat width, as is clear from the top. A movable airbag 43 as shown in FIGS. 7 and 8 is provided between the side surface of the resin shell 42 and the side surface of the backrest cushion 41.

  As shown in FIG. 7, the airbag 43 is disposed in a gap along the inner surface of the side surface of the resin shell, and the airbag 43 accommodated in a contracted state in the gap serves as an airbag holding means attached to the tip portion. The base plate 44 can slide forward along the gap between the side surface of the resin shell 42 and the cushion 41 via the drive motor 45 and the transmission rod 46. In this embodiment, the drive plate 45 pushes the base plate 44 to which the airbag 43 is attached by driving a gear train 47 integrated with the transmission rod 46 and the base plate 44 as a transmission mechanism.

  In the gap between the resin shell 42 and the back cushion 41, as shown in FIG. 7, in addition to the drive motor 45 and the transmission rod 46 of the transmission mechanism, a compressed gas tank 47 for inflating the airbag 43 is provided. A compressor 48 is accommodated. The compressor 48 has a function capable of supplying the compressed gas stored in the compressed gas tank 47 to the airbag 43 instantaneously at a predetermined pressure with a predetermined pressure, and when a collision prediction is detected, FIG. The operation shown in FIG.

  First, when a collision is predicted, the base plate 44 that supports the airbag 43 protrudes from between the resin shell 42 and the side of the back cushion 41 in the direction of the arrow in FIG. Then, the compressed gas is sent from the compressor 48 through the gas supply pipe 49 to the balloon-like airbag 43 attached to the distal end portion of the base plate 44 in a contracted state. At this time, as shown in FIG. 8B, since the airbag mounting portion of the base plate 44 protrudes forward of the back cushion 41, the chest or torso of the occupant D is pressed by the airbag 43 from the side front. become. Accordingly, the occupant D is restrained so that the upper body is lightly pressed against the back cushion of the seat back 3. When it is detected that a collision has been avoided from this state, the compressed gas that has inflated the air bag is immediately exhausted by the operation of the compressor 48, the air bag 43 contracts, and the base plate 44 that holds the air bag 43 in the contracted state. However, the reverse movement of the transmission rod 46 accommodates the shell 42 as shown by the white arrow.

  The body part restraining airbag device 40 directly restrains the body part of the occupant D so as to be restrained to the seat back 3 by the airbag 43 inflated from the side when the collision is predicted in this way, and the collision is avoided. In some cases, the airbag 43 is stored again in the position of the resin shell 42 of the seat 1 until the next collision that may occur.

[Configuration and operation of thigh restraint device]
The configuration and operation of the thigh restraint device 50 that restrains the thigh of the occupant D as the occupant restraint device 10 will be described with reference to FIGS. 7 and 8, the airbag 43 that restrains the upper body of the occupant D from the side has been described. However, the thigh restraint device 50 is configured so that the occupant D does not move as shown in the cross-sectional view of FIG. It is equipped in the bolster 5 on the side of the seat. In this thigh restraint device, a balloon-like airbag 53 made of synthetic rubber is accommodated in a contracted state above the seat cushion material 51 filled in the bolster 5, and is stored in a space 52 below the seat surface. A compressed gas tank 57 and a compressor 58 for inflating the airbag 53 are provided. When the airbag 58 is inflated by operating the compressor 58 at the stage where the collision is predicted, the surface material 5a of the bolster 5 is made of a highly elastic fabric, so that the surface of the airbag 53 at this portion 5a is somewhat Raises inward. The raised portion of the surface of the bolster 5 restrains the thigh T of the occupant D on the seat surface 2 so as to be sandwiched from both sides, and the lower limbs of the occupant D can be restrained in close contact with the seat portion 3.

  On the other hand, with respect to the return operation of the thigh restraint device 50, the air bag 53 is completely contracted to the initial state by exhausting by the compressor 58. At that time, since the surface material 5a of the bolster 5 is covered with the elastic cloth, the shape of the bolster 5 can be returned to the state just before the state before the expansion.

[Operation when shoulder holding arm predicts collision]
As described above, the shoulder holding arm 30 is not in contact with the shoulder of the occupant D by the non-contact sensor 33 attached to the lower surface of the arm 31 as shown in FIG. The operation of the shoulder holding arm 30 in the initial state (FIG. 1), normal operation (FIG. 4), and collision prediction (FIG. 5) will be described with reference to FIGS. 10A is a cross-sectional view of the arm 31 along the Xa-Xa cross-sectional line in FIG. 4 and the inside of the seat back 3, and FIG. 10B is an arm 31 along the Xb-Xb cross-sectional line of FIG. FIG. 3 is a cross-sectional view of a portion and the inside of a seat back 3.

  As shown in FIG. 10A, the shoulder holding arm 30 converts the two driving motors 34 and 35 as driving mechanisms and the rotational force from the respective driving motors into a predetermined motion of the shoulder holding arm 30. A transmission mechanism is provided in a space formed in the seat back 3. Specifically, the shoulder holding arms 30 positioned on the left and right sides of the headrest are supported by a single rotatable support rod 36 that can be rotated, and a rotational force from the drive motor 35 is applied to the support rod 36. Is transmitted through the gear train 37, and the tip of the arm 31 moves up and down around the support point of the arm 31 as shown in FIGS. 1 to 2 and 10 (b) as the support rod 36 rotates. Such a rotating operation is realized. In addition, as a transmission mechanism of the drive motor 35, a link mechanism 37 that extends the support rod 36 as shown in each of FIGS. The link mechanism 37 has a guide groove bar 38 attached at a predetermined angle. At this time, the transmission rod 36 is in a state of being contracted to a predetermined contraction length by the action of the compression spring 39. An airbag 32 is accommodated in the arm 31.

  Here, the operation of the shoulder holding arm 30 at the time of collision prediction will be described with reference to FIGS. During normal operation, the shoulder holding arm 30 is positioned downward so as not to contact the shoulder of the occupant D from the shoulder to the collarbone. In this state, in order for the airbag to inflate from the lower surface of the arm 31 to hold the shoulder of the occupant D, the airbag 32 cannot softly restrain the shoulder. Therefore, it is preferable to secure a predetermined space between the shoulder and the lower surface of the arm 31 by lifting the shoulder holding arm 30 outward and the tip. In this embodiment, as shown in FIGS. 11A and 11B, the compression spring 39 is released in a state where a collision is predicted. As a result, the transmission rod 36 in the contracted state is instantaneously extended and moved to both end positions in the width direction of the seat back 3. At the same time, the shoulder holding arm 30 rotates slightly upward. At the same time, the airbag 32 bulges from the lower surface of the arm 31. The pressure source for inflating the airbag 32 is the compressor 28 as shown, and the pressure source is not shown, but the compressed gas tank 57 of the body restraint device 40 described above can be used together. Further, the compressor 28 can also extend the gas supply pipe to the airbag 32 by using the body restraint device 40.

  Thus, as shown in FIGS. 5 and 11, the shoulder holding arm 30 moves the upper part of the chest from the shoulder of the occupant D to the front at the same timing as other restraining devices at the time of collision prediction and collision detection. And the passenger | crew D can be restrained by the seat back 3 so that it may hold | suppress from upper direction.

  Another embodiment of the seat belt mounting mechanism 20 in the occupant restraint device 10 will be described with reference to FIGS. As shown in FIG. 12, the seatbelt mounting mechanism is provided with a retractor (not shown) in the seatback 3 as in the first embodiment, and is provided on the left side of the headrest (chamber interior side). The end of the seat belt 22 is pulled out from the seat belt outlet 7. Further, an armrest 61 (left side) for facilitating the mounting of the seat belt 22 is provided to be rotatable around the support point 3 a of the seat back 3. In addition, in each figure of FIGS. 12-15, illustration of each passenger | crew restraint apparatus 10 provided in the seat back 3 and the side bolster 5 of the seat part is abbreviate | omitted.

  As shown in FIG. 12, the seat belt 22 pulled out from the seat belt outlet 7 in the left shoulder portion is placed on the seat belt guide portion 63 held at the upper portion of the slide guide rail 62 formed on the lower surface of the armrest 61. In addition, the seat belt 22 is stretched between the fixing end 65 supported by the slide track groove 64 provided on the side surface of the seat portion of the seat. As shown in FIG. 13, when the occupant D sits on the seat 1 and tilts the armrest 61 forward, the seat belt guide portion 63 and the fixing end 65 of the seat side portion, which are located at the tip of the armrest 61, are connected. Thus, the seat belt 22 is pulled out from the drawer port 7 by a predetermined amount. FIG. 13 is a partially enlarged view schematically showing the relationship between the seat belt 22 and the seat belt guide portion 63 attached to the armrest 61 and the fixing end 65 of the seat belt 22 in this state. As shown in FIG. 14, a seat belt guide portion 63 that can slide in the longitudinal direction of the armrest 61 along the slide guide rail 62 on the lower surface of the armrest 61 is attached to the inside of the armrest 61. As shown in the drawing, the seat belt guide portion 63 is made of a resin block that allows the seat belt 22 to pass therethrough and deflect the direction of the seat belt 22, and is attached to the slide guide rail 62 on the lower surface of the armrest by a drive mechanism (not shown). It can move back and forth along.

  As for the seat belt 22 mounting operation, the seated occupant D tilts the armrest 61 forward, so that the fixing end 65 on the side surface of the seat seat 2 that supports the end of the armrest 61 is mounted under the seating surface. A drive motor (not shown) slides forward along a slide track groove 64 formed on the side surface of the seat. At this time, the tongue 26 is in a position where the occupant D in front of the armrest 61 can easily take it (see FIG. 14). From this state, the occupant D picks up the tong 26 and pulls out the seat belt 22, The waist belt and the shoulder belt are pulled out from the tongue position to the buckle device 25 on the opposite side of the seat so as to be positioned in front of the user, and attached to the buckle device 25. When the attachment is completed, as shown in FIG. 15, the detection unit (not shown) of the buckle device 25 detects the attachment of the seat belt 22, and the buckle device 25 is driven by a drive motor (not shown) built in the seat seat portion. The fixing end 65 moves to the seat back 3 side along the slide track groove 64 of the seat seat 2, and the seat belt guide 63 attached to the armrest 61 also has the seat belt 22 attached to the body of the occupant D. The seat belt 22 is retracted to a position where the front surface of the passenger belt D is not strongly pressed, and the restraint of the seat belt 22 in a comfortable state when the seat belt is worn by the occupant D is ensured.

  As described above, in the occupant restraint device 10, the above-described configuration is operated by the following detection units 16 and 17 and the control unit 12. That is, the approaching state of an object approaching from the front is measured by the normal driving state shown in FIG. 4, for example, by a distance measuring sensor 16 such as a millimeter wave radar or an imaging device as a forward distance detecting means during traveling of the host vehicle. When the distance measuring sensor 16 detects an approached state (hereinafter referred to as a collision prediction) that has been distanced and the object has entered within a predetermined allowable approach distance, the collision prediction signal is output to the control unit 12 and the seat back. 5, the base plate 44 of the body restraining device 40 in the bolster 5 projects forward as shown in FIGS. 5 and 6, and the shoulder holding arm 30 moves in the direction of the arrow shown in FIG. , Rotate upward. Then, gas is supplied from the compressor to the airbags 32 and 43 in each part, and as shown in FIGS. 5 and 6, the independent airbags 32 and 43 in the chest part and the trunk part serve as the base plate 44 of the bolster 5 in the seat back 3. The bolster 5 of the seat 2 bulges toward the occupant D from the side, and the bolster 5 bulges toward the thigh of the occupant D due to the expansion of the internal airbag 53, and the airbag of the shoulder holding arm 30 32 bulges toward the occupant D's shoulder. As a result, the airbag 32, 43, 53 is inflated, so that the chest and waist of the seated occupant D are reliably restrained by the seat back 3, and the lower limbs are also pressed against the seat surface 2. As a result, when each of the occupant restraining airbag devices is activated, the occupant D is restrained to the seat back 3 side in the driving posture. Subsequently, when the collision occurs, the occupant D is restrained in advance by the seat, so that the influence of the impact at the time of the collision can be minimized.

  On the other hand, when the collision is avoided only by the collision prediction, the airbags 32, 43, 53 are completely exhausted and stored again in the predetermined accommodation position, so that the occupant D continues to be the same as before the collision prediction. It is possible to return to the normal operation state.

  In addition, as a collision prediction means (refer FIG. 5), a well-known acceleration sensor etc. can be mounted in various places of a vehicle body. Then, various types of collisions that can be assumed are detected, and the collision detection information is transmitted to the control unit 12, so that the control unit 12 performs the determination according to the determination of the collision pattern, and is suitable for the state of the present invention. An operation command is also issued to an occupant restraint device such as various existing airbag devices equipped in addition to the occupant restraint device 10, and the occupant restraint is realized in a superimposed manner and effectively.

The perspective view which showed the initial state (state where the passenger | crew is not seated) of the passenger | crew restraint apparatus of this invention. The perspective view which showed the state before a passenger | crew seated in the passenger | crew restraint apparatus and seatbelt mounting | wearing. The front view of the passenger | crew restraint apparatus shown in FIG. The perspective view which showed the normal driving | running state of the seated passenger | crew (at the time of seatbelt wearing). The perspective view which showed the state which all the airbags with which the passenger | crew restraint apparatus was equipped operate | moved and restrained the passenger | crew. The front view of the passenger | crew restraint apparatus in the passenger | crew restraint state shown in FIG. The plane sectional view which showed the seat back inside along the VII-VII sectional line shown in FIG. Explanatory drawing which showed the operation state of the airbag support plate and airbag shown in FIG. Sectional drawing which showed the inside of the seat part of a passenger | crew restraint apparatus along the IXa-IXa sectional line shown in FIG. 4, and the IXb-IXb sectional line shown in FIG. Sectional drawing which showed the shoulder holding arm and the seat back inside along the Xa-Xa sectional line and Xb-Xb sectional line shown in FIG. Sectional drawing which showed the shoulder holding arm and the seat back inside along the XIa-XIa sectional line and XIb-XIb sectional line shown in FIG. The perspective view which showed the initial state (state where the passenger | crew is not seated) of the passenger | crew restraint apparatus of this invention. The perspective view which showed the operation state which mounts | wears a seatbelt using an armrest. The elements on larger scale which showed an example of the seatbelt guide part attached to the armrest. The perspective view which showed the normal driving | running state of the seated passenger | crew (at the time of seatbelt wearing).

Explanation of symbols

1 Seat 2 Seat 3 Seat Back 4 Headrest 5 Bolster (Side Bolster, Seat Bolster)
DESCRIPTION OF SYMBOLS 10 Occupant restraint device 12 Control part 16 Distance sensor 17 Collision detection sensor 20 Seat belt mounting mechanism 22 Seat belt 24 Fixing end 25 Buckle device 26 Tongs 28, 48, 58 Compressor 47, 57 Compressed gas tank 30 Shoulder holding arm 31 Arm 32, 43, 53 Airbag 40 Torso restraint device 41 Back cushion 42 Resin shell 44 Base plate 50 Thigh restraint device 61 Armrest D Crew

Claims (9)

A distance measuring sensor that detects an approaching state between the vehicle and a collision object and outputs collision prediction information;
A collision detection sensor that detects a collision with the collision object and outputs collision detection information;
An airbag holding means that is accommodated in a side bolster of the seat back, protrudes forward from the front surface of the side bolster by a drive mechanism, and is re-accommodable;
An airbag supported at the tip of the airbag holding means; a gas supply means for inflating and deploying the airbag;
A controller for controlling the operation of the drive mechanism and the operation of the gas supply means;
An occupant restraint device comprising:
When the control unit receives collision prediction information from the distance measuring sensor, the airbag holding means protrudes from the front surface of the side bolster by the operation of the drive mechanism according to an operation command from the control unit,
When the control unit receives collision prediction information and receives the collision detection information within a predetermined time, the gas generation means receives an operation command from the control unit to generate gas and inflate the airbag to occupant Torso restraint,
When the control unit receives the collision prediction information and does not receive the collision detection information within a predetermined time, the airbag holding means is operated by the drive mechanism in response to an operation command from the control unit. An occupant restraint device re-contained in a bolster.   2. The air bag holding means is formed in a plate shape that can be slid out of the side bolster by the drive mechanism, and an air bag that can be inflated and shrunk is attached to a distal end portion. The occupant restraint device described in 1.   Shoulder holding arms are rotatably supported on the upper part of the seat back on both sides of the headrest at the upper part of the seat back, and an airbag is provided in the shoulder holding arm, receiving the collision detection information, The occupant restraint device according to claim 1, wherein the airbag is inflated to restrain the occupant's shoulder.   The occupant restraint device according to claim 3, wherein the shoulder holding arm has a seat belt outlet at a base portion on a vehicle center side, and a retractor is provided in the seat back.   The shoulder holding arm rotates from the initial state that does not prevent the occupant's seating to the occupant's shoulder after detection of the occupant's seating. The occupant restraint device according to claim 4, wherein the position is maintained with a gap.   The seat belt is supported so that the seat end portion can move in the front-rear direction of the seat along a slide portion formed on the seat side portion, and a buckle device is provided on the other surface side portion of the seat. The occupant restraint device according to claim 4, wherein the occupant restraint device is supported so as to be movable synchronously.   The occupant restraint apparatus according to claim 1, wherein the gas supply means is a compressor pump capable of supplying a gas from a gas source provided in a seat to an airbag.   In addition to the airbag holding means according to claim 1, an airbag is accommodated in a side bolster of a seat portion, and the airbag in the side bolster is inflated by receiving the collision detection information, and the side portion An occupant restraint device in which a bolster is raised to restrain an occupant's lower limb.   The seatrest has a seat belt outlet at the base of the headrest on the upper side of the seatback, and is slidable in the longitudinal direction of the armrest on the armrest that is rotatably supported by the seatback side of the drawer. A seat belt guide portion is formed, and a seat end is supported so as to be movable in the front-rear direction of the seat along a slide portion formed on the seat side portion. An occupant restraint device characterized by being supported so as to be able to move in synchronization with the movement of the end portion.

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