JP2007186058A - Occupant crash protection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an occupant crash protection device capable of reducing a surface pressure received by a chest part of an occupant. <P>SOLUTION: The occupant crash protection device 1 is provided with a restriction member 3 made of cloth for restricting the occupant R sitting on a seat 2; and a retractor 4 for winding the restriction member 3. The restriction member 3 has an approximately rectangular restriction part 3a for covering an upper body of the occupant R at both sides of a center in a width direction of the seat 2. The retractor 4 is constituted such that it is built-in on an upper part of the seat 2 and the restriction member 3 is drawn out along a height direction of the seat 2. The retractor 4 has a storage port 4a for storing the restriction member 3. The storage port 4a is formed to a slit shape extending in a width direction of the seat 2. Buckles 5 are built-in at both right and left sides of the seat 2 respectively. Further, tangs 6 attached/detached relative to the buckles 5 are mounted to the restriction member 3 respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an occupant protection device mounted on a vehicle or the like.

As an occupant protection device for protecting an occupant seated in a vehicle seat, for example, a three-point seat belt device as described in Patent Document 1 is generally used. This seat belt device includes a seat belt (webbing) pulled out from a retractor, a tongue provided in an intermediate portion of the seat belt, and a buckle that is installed on one side of the seat and is detachably engaged with the tongue. ing.
JP 2001-39268 A

  In an occupant protection device that protects an occupant seated in a seat, it is desirable to reduce the surface pressure applied to the occupant's chest as much as possible, especially considering people with low human body tolerance, such as elderly people and children. However, in the current three-point seat belt device as in the prior art, there is a limit in reducing the belt surface pressure received on the chest of the occupant by the seat belt.

  The objective of this invention is providing the passenger | crew protection device which can reduce the surface pressure received to a passenger | crew's chest.

  The present invention relates to an occupant protection device that protects an occupant seated in a seat, and includes a restraining member for restraining the occupant seated in the seat and a storage port for housing the restraining member, and the retractor that winds the restraining member And a fixing means for detachably fixing the restraining member pulled out from the retractor to the seat, and the retractor is disposed above or above the seat, and the restraining member is arranged along the height direction of the seat. And the storage port extends in the width direction of the seat.

  When such an occupant protection device is used, the occupant pulls out the restraint member from the retractor disposed above or above the seat after sitting in the seat, and in that state, the restraint member is attached to the seat by the fixing means. And fix. Here, the storage opening of the retractor extends in the width direction of the seat. For this reason, the restraining member for restraining the occupant is not a belt-like member such as a current seat belt, but a wide member that covers, for example, most of the occupant's upper body (excluding the head and arms). Can be used. In this case, the surface pressure received by the passenger's chest by the restraint member can be reduced.

  Preferably, the restraining member is a member for restraining the passenger on both sides of the center in the width direction of the seat. In this case, since a wide restraining member along the width direction of the seat is obtained, the surface pressure applied to the occupant's chest by the restraining member can be sufficiently reduced.

  Preferably, the fixing means includes a pair of buckles installed on the left and right sides of the seat, and a pair of tongues attached to the restraining member and attached to and detached from each buckle. In this case, the upper body of the occupant can be sufficiently restrained by the restraining member while simplifying the operation of fixing the restraining member pulled out from the retractor to the seat.

  At this time, preferably, when one of the pair of tongues is attached to the buckle and the lock means for holding the pair of tongues in a connected state, the unlocking for releasing the connected state of the pair of tongues Means. In such a configuration, when the occupant pulls out the restraining member from the retractor with one hand while the pair of tongues are held in the connected state by the locking means, and the one tongue is attached to the buckle, the pair of tongues are attached by the unlocking means. The connected state between the tongues is released, and the respective tongues are separated from each other. For this reason, the occupant can switch to the other tongue with the same hand and attach the tongue to the other buckle. Thus, the wearing operation of the restraint member can be easily performed with only one hand.

  The lock means has a lock pin pivotally supported on one of the pair of tongues, and an engaging portion that is provided on the other of the pair of tongues and engages the lock pin. When one of the tongues is attached to the buckle, it is preferable to have a pressing portion that rotates the lock pin in a direction to release the locking of the lock pin by the locking portion. In this case, for example, the lock unit and the lock release unit can be realized with a simple structure without using a sensor, a controller, or the like.

  The fixing means includes a buckle installed on one of the left and right sides of the seat, a tongue attached to the restraining member and attached to the buckle, and a fastening device installed on the other of the left and right sides of the seat. You may have a winder which winds up one part. In such a configuration, when the occupant pulls out the restraint member from the retractor with one hand and attaches the tongue to the buckle, at the same time, a part of the restraint member is taken up by the winder. In this manner, the occupant's upper body is restrained by the restraining member only by mounting one tongue on the buckle. Thereby, wearing operation of a restraint member can be performed very easily by one operation | movement (one motion) only with one hand.

  At this time, preferably, a part of the restraining member is connected to the winder in a state of being pulled out from the retractor in advance, and the winder is restrained by an amount corresponding to the amount of the restraining member pulled out from the retractor. It is comprised so that a part of may be wound up. In this case, since the amount of pulling out of the restraining member from the retractor is equal to the amount of winding of the restraining member by the winder, the upper body of the occupant can be restrained with good balance on both the left and right sides by the restraining member.

  Further, preferably, the retractor is supported so as to be movable in the height direction of the seat. In such a configuration, for example, when the retractor is normally positioned above or above the seat and the restraint member pulled out from the retractor is fixed to the seat by the fixing means, the retractor is positioned at the height of the seat. Make sure to descend in the direction to the shoulder of the passenger. In this case, since the retractor is positioned at a natural height with respect to the height of the occupant regardless of the height difference of the occupant, the restraining force of the upper body of the occupant by the restraining member can be further increased. .

  At this time, preferably, when detecting that the restraining member pulled out from the retractor is fixed with respect to the seat, and when the detecting means detects that the restraining member is fixed with respect to the seat, the retractor And a means for controlling so as to move it downward. In this case, when the occupant fixes the restraint member to the seat by the fixing means, the retractor automatically moves in the seat height direction, for example, to the vicinity of the occupant's shoulder, thus reducing the operation burden on the occupant. can do.

  According to the present invention, it is possible to reduce the surface pressure applied to the occupant's chest by the restraining member. Thereby, it becomes possible to reduce the discomfort experienced by the occupant when the restraint member is worn.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an occupant protection device according to the present invention will be described in detail with reference to the drawings.

  First, a first embodiment of an occupant protection device according to the present invention will be described with reference to FIGS. The occupant protection device of this embodiment is mounted on a vehicle such as an automobile and restrains and protects the occupant seated in the seat.

  FIG. 1 is a front view showing a seat provided with the occupant protection device of the present embodiment, and FIG. 2 is a side view showing the seat provided with the occupant protection device shown in FIG. In each figure, the occupant protection device 1 includes a sheet-like restraining member 3 for restraining an occupant R seated on a seat 2 and a retractor 4 for winding the restraining member 3.

  The restraining member 3 is formed of, for example, a cloth. The restraining member 3 is formed to extend toward the retractor 4 from the restraining portion 3a and the substantially rectangular restraining portion 3a covering the upper body of the occupant R on both sides of the center of the seat 2 in the width direction. It consists of a pair of connected connection parts 3b and a pair of fixed parts 3c formed so as to extend from the restraining part 3a to the opposite side of the connection part 3b. The restraint member 3 has a wide area that covers almost the entire chest and abdomen of the occupant R by the restraint portion 3a, and is configured to expose the arm, thigh, and head of the occupant R.

  The retractor 4 is built in the upper part of the seat back surface portion 2 a of the seat 2, and is configured to pull out the restraining member 3 along the height direction (vertical direction) of the seat 2. The retractor 4 has a storage port 4 a for storing the restraining member 3. The storage opening 4a has a slit shape extending in the width direction of the seat 2 corresponding to the wide restraining portion 3a covering almost the entire chest and abdomen of the occupant R. The restraining member 3 is usually housed in the retractor 4.

  Buckles 5 are incorporated in the left and right sides of the seat seat surface portion 2b of the seat 2, respectively. A tongue 6 that is attached to and detached from the buckle 5 is attached to the tip of each fixing portion 3 c of the restraining member 3. By providing two such buckles 5 and tongues 6, the restraining member 3 pulled out from the retractor 4 can be easily and detachably fixed to the seat 2. The buckle 5 may be attached to the side surface of the seat seat surface portion 2b or a floor near the seat seat surface portion 2b via an anchor plate.

  In such an occupant protection device 1, when the occupant R sits on the seat 2 and wears the restraint member 3, first, as shown in FIG. 3A, each tongue 6 is pulled in the direction of the arrow to restraint member 3. Is withdrawn from the storage port 4a of the retractor 4. And as shown in FIG.3 (b), the restraint member 3 is extended toward the downward direction of the seat 2, and each tongue 6 is each inserted in the buckle 5, and is mounted | worn. As a result, the wearing of the restraining member 3 is completed, and the chest and abdomen of the occupant R are restrained by the restraining member 3.

  At this time, since almost the entire chest of the occupant R is covered by the wide restraint portion 3a, the surface received by the restraint member 3 on the chest of the occupant R compared to the case of using a general belt-shaped seat belt. The pressure can be sufficiently reduced. Thereby, it is possible for the passenger R to obtain a good wearing feeling of the restraining member 3 while the wearing operation of the restraining member 3 by the passenger R is simple.

  Further, since the restraining member 3 is pulled out from the retractor 4 along the height direction of the seat 2, the occupant protection device 1 can be mounted even when the space on the left and right sides of the seat 2 is limited.

  A second embodiment of an occupant protection device according to the present invention will be described with reference to FIGS. In the figure, the same or equivalent members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 4 is a front view showing a seat provided with the occupant protection device of the present embodiment. In the figure, an occupant protection device 10 has tongues 11 and 12 instead of the pair of tongues 6 in the first embodiment. These tongues 11 and 12 are normally connected as shown in FIG. 5A.

  The tongue 11 has a main body 13 that is attached to and detached from one buckle 5, and a substantially U-shaped lock pin 14 is rotatably supported on the main body 13 via a shaft 15 (shaft support). ) In addition, an unlocking pressing pin 16 that engages with the lock pin 14 is attached to the main body 13 via a spring 17. The tongue 12 has a main body 18 that is attached to and detached from the other buckle 5, and the main body 18 is provided with a locking portion 19 that locks one end of the lock pin 14.

  When the main body 13 of the tongue 11 is inserted into the buckle 5, the pressing pin 16 presses the lock pin 14 against the urging force of the spring 17 as shown in FIG. The lock pin 14 is configured to rotate in a direction for releasing the lock pin 14 (direction A in the figure).

  Here, the lock pin 14, the shaft portion 15, and the locking portion 19 constitute a lock unit that holds the tongues 11 and 12 in a connected state. When the tongue 11 is attached to the buckle 5, the pressing pin 16 and the spring 17 constitute a lock release unit that releases the connection state between the tongues 11 and 12.

  In such an occupant protection device 10, when the occupant R sits on the seat 2 and wears the restraining member 3, the locked tongues 11 and 12 as shown in FIGS. 5 (a) and 6 (a) are used. The restraining member 3 is pulled out from the storage port 4 a of the retractor 4 by pulling with one hand. Then, as shown in FIG. 6B, one tongue 11 is inserted into the buckle 5 and attached. Then, as shown in FIGS. 5B and 5C, the locked state of the tongues 11 and 12 is released, and the tongues 11 and 12 are separated from each other. Then, as shown in FIG. 6C, the other tongue 12 is held with the same hand, and the tongue 12 is inserted into the buckle 5 on the opposite side and attached. As a result, the restraining portion 3 a of the restraining member 3 spreads in the width direction of the seat 2, and the chest and abdomen of the occupant R are restrained by the restraining member 3.

  As described above, also in the present embodiment, almost the entire chest of the occupant R is covered by the wide restraining portion 3a, so that the surface pressure applied to the chest of the occupant R by the restraining member 3 can be sufficiently reduced. . Moreover, since the wearing operation of the restraining member 3 can be easily performed with only one hand, the operability of the occupant protection device is improved.

  A third embodiment of an occupant protection device according to the present invention will be described with reference to FIGS. In the figure, the same or equivalent members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 7 is a front view showing a seat provided with the occupant protection device of the present embodiment. In the figure, the occupant protection device 20 has one buckle 5 and one tongue 6 in the first embodiment. The buckle 5 is built in either one of the left and right sides of the seat seat surface portion 2b. The tongue 6 is attached to the tip of the fixing portion 3c on the side corresponding to the buckle 5 in the restraining member 3.

  A motor retractor 21 is built in the other of the left and right sides of the seat seat surface portion 2b. The motor retractor 21 is a winder that has a motor and winds up one fixing portion 3 c of the restraining member 3. As shown in FIG. 8A, the fixed portion 3c is connected to the motor retractor 21 in a state where it is pulled out from the retractor 4 in advance.

  In addition, the occupant protection device 20 includes a sensor 22 for detecting the pulling amount (drawing length) of the restraining member 3 from the retractor 4 and a controller 23 for controlling the motor of the motor retractor 21 based on the detection signal of the sensor 22. And further. For example, a position sensor that detects the position of the tongue 6 is used as the sensor 22. Specifically, the controller 23 obtains the pull-out amount of the restraining member 3 from the detection value of the sensor 22, and the motor so that the pull-out amount and the winding amount (retraction amount) of the fixed portion 3c by the motor retractor 21 are equal. The motor of the retractor 21 is controlled.

  In such an occupant protection device 20, when the occupant R sits on the seat 2 and wears the restraining member 3, first, one fixing portion 3 c of the restraining member 3 and the back of the seat, as shown in FIG. Pass one arm between the part 2a. Then, as shown in FIG. 8B, the tongue 6 is pulled with one hand, and the restraining member 3 is pulled out from the storage port 4 a of the retractor 4. At this time, by the control of the motor retractor 21 by the controller 23, the one fixing portion 3c of the restraining member 3 is wound around the motor retractor 21 by the amount that the restraining member 3 is pulled out from the retractor 4. Then, as shown in FIG. 8C, the chest 6 and the abdomen of the occupant R are restrained by the restraining member 3 by inserting the tongue 6 into the buckle 5 and wearing it.

  As described above, also in the present embodiment, almost the entire chest of the occupant R is covered by the wide restraining portion 3a, so that the surface pressure applied to the chest of the occupant R by the restraining member 3 can be sufficiently reduced. . Further, at the same time when the restraining member 3 is pulled out from the retractor 4, one fixing portion 3c of the restraining member 3 is automatically wound around the motor retractor 21, so that the wearing operation of the restraining member 3 can be performed only with one hand and once. It can be done easily with only one motion. As a result, the operability of the occupant protection device is further improved.

  Furthermore, since the amount of pulling out of the restraining member 3 from the retractor 4 and the amount of winding of the fixing portion 3c by the motor retractor 21 are equal, the restraining member 3 can restrain the occupant R in a balanced manner on both the left and right sides.

  In addition, as a winder which winds up one fixing | fixed part 3c of the restraint member 3, you may use a spring spring type winder instead of said motor retractor 21. FIG. In this case, since the sensor 22 and the controller 23 are not necessary, the configuration of the occupant protection device can be simplified. However, when the sensor 22 and the controller 23 are used, the winding amount of the fixed portion 3c by the motor retractor 21 can be made to exactly match the drawing amount of the restraining member 3.

  A fourth embodiment of an occupant protection device according to the present invention will be described with reference to FIGS. In the figure, the same or equivalent members as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  FIG. 9 is a side view (including a partial cross section) showing a seat provided with the occupant protection device of the present embodiment. In the figure, the occupant protection device 30 has a drive unit 31 that slides the retractor 4 in the height direction of the seat 2. The retractor 4 is accommodated in a recess 32 formed in the seat back surface portion 2 a of the seat 2. The drive unit 31 is built in the seat back surface portion 2a.

  The drive unit 31 is supported by the seat frame 33 and extends in the height direction of the seat 2. The drive unit 31 is fixed to the retractor 4. The slider unit 35 meshed with the screw drive 34 and the screw drive 34 are driven to rotate. And a motor 36. When the screw drive 34 is rotated by the motor 36, the slider part 35 moves up and down, and the retractor 4 moves up and down accordingly.

  The occupant protection device 30 further includes a buckle sensor 37 that detects whether or not each tongue 6 is attached to the buckle 5, and a controller 38 that controls the motor 36 based on a detection signal of the buckle sensor 37. Yes. As the buckle sensor 37, for example, a contact sensor provided on each buckle 5 is used.

  The details of the control processing procedure by the controller 38 are shown in FIG. In addition, in the state where each tongue 6 is not attached to the buckle 5, the retractor 4 is assumed to be in an upper position (initial position) of the seat back surface portion 2a as shown in FIG.

  In FIG. 10, it is first determined from the detection signal of the buckle sensor 37 whether each tongue 6 is attached to the buckle 5 (procedure 41). When each tongue 6 is attached to the buckle 5, the motor 36 is controlled so that the retractor 4 is lowered from the initial position (step 42). When each tongue 6 is not attached to the buckle 5, the retractor is controlled. The motor 36 is controlled so that 4 rises to the initial position (procedure 43). At this time, for example, a sensor for detecting the position of the slider portion 35 is provided. When it is detected that the position of the slider portion 35 has not changed for a predetermined time, the control of the motor 36 in the above steps 42 and 43 is terminated, Return to 41.

  In such an occupant protection device 30, when the restraint member 3 is worn by attaching the pair of tongues 6 to the buckle 5, as shown in FIG. Come down to the shoulder area. Accordingly, the height of the retractor 4 is always in a natural position with respect to the wearing of the restraining member 3 regardless of whether the height of the occupant R is high or low, and the restraining force of the chest of the occupant R by the restraining member 3 can be sufficiently obtained. Be able to.

  In addition, although this embodiment makes the retractor 4 movable to an up-down direction in said 1st Embodiment, it cannot be overemphasized that it can apply also in said 2nd-4th embodiment.

  As mentioned above, although several suitable embodiment of the passenger | crew protection device concerning this invention has been demonstrated, this invention is not limited to the said embodiment.

  For example, in the above embodiment, the retractor 4 is built in the upper part of the seat back surface portion 2a of the seat 2. However, in addition to this configuration, for example, the retractor 4 may be housed in the roof above the seat back surface portion 2a. good.

  The occupant protection device of the above embodiment is mounted on a vehicle such as an automobile. However, the occupant protection device according to the present invention can be applied to a vehicle other than the vehicle.

It is a front view showing a seat provided with a 1st embodiment of a crew member protection device concerning the present invention. It is a side view which shows the seat provided with the passenger | crew protection device shown in FIG. It is a figure which shows the operation | movement which wears the restraint member shown in FIG. It is a front view which shows the seat provided with 2nd Embodiment of the passenger | crew protection device concerning this invention. It is a figure which shows the structure which locks a pair of tongue shown in FIG. 4, and the structure which cancel | releases lock | rock of these tongues. It is a figure which shows the operation | movement which wears the restraint member shown in FIG. It is a front view which shows the seat provided with 3rd Embodiment of the passenger | crew protection apparatus concerning this invention. It is a figure which shows the operation | movement which wears the restraint member shown in FIG. It is a side view (a partial cross section is shown) which shows the seat provided with 4th Embodiment of the passenger | crew protection device concerning this invention. It is a flowchart which shows the detail of the control processing procedure by the controller shown in FIG. It is a figure which shows the operation | movement which wears the restraint member shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Passenger protection apparatus, 2 ... Seat, 3 ... Restraint member, 4 ... Retractor, 4a ... Storage port, 5 ... Buckle (fixing means), 6 ... Tongue (fixing means), 10 ... Passenger protection apparatus, 11, 12 ... Tang (fixing means), 14 ... lock pin (locking means), 16 ... pressing pin (pressing part, unlocking means), 19 ... locking part (locking means), 20 ... occupant protection device, 21 ... motor retractor (winding) Take-up machine), 30 ... occupant protection device, 31 ... drive unit (control means), 37 ... buckle sensor (detection means), 38 ... controller (control means), R ... occupant.

Claims (9)

In an occupant protection device that protects an occupant seated in a seat,
A restraining member for restraining an occupant seated in the seat;
A retractor having a storage port for storing the restraining member, and winding the restraining member;
Fixing means for detachably fixing the restraining member pulled out from the retractor to the seat;
The retractor is arranged above or above the seat, and is configured to pull out the restraining member along the height direction of the seat,
The occupant protection device, wherein the storage port extends in a width direction of the seat.   The occupant protection device according to claim 1, wherein the restraining member is a member for restraining the occupant on both sides of the center in the width direction of the seat.   The fixing means includes a pair of buckles installed on both left and right sides of the seat, and a pair of tongues attached to the restraining member and attached to and detached from the buckles. Item 3. An occupant protection device according to item 1 or 2.   A lock means for holding the pair of tongues in a connected state; and a lock release means for releasing the connected state of the pair of tongues when any one of the pair of tongues is attached to the buckle; The occupant protection device according to claim 3, further comprising: The locking means includes a lock pin that is pivotally supported by one of the pair of tongues, and an engaging portion that is provided on the other of the pair of tongues and engages the lock pin.
The unlocking means is attached to the one tongue, and when the one tongue is attached to the buckle, the pressing means for rotating the lock pin in a direction to release the lock pin by the locking portion. The occupant protection device according to claim 4, further comprising a portion.   The fixing means is a buckle installed on one of the left and right sides of the seat, a tongue attached to the restraining member and attached to and detached from the buckle, and installed on the other of the left and right sides of the seat, The occupant protection device according to claim 1, further comprising a winder that winds a part of the restraining member. A part of the restraining member is connected to the winder in a state where the part is pulled out from the retractor in advance.
The occupant protection device according to claim 6, wherein the winder is configured to wind a part of the restraining member by an amount corresponding to an amount by which the restraining member is pulled out from the retractor.   The occupant protection device according to any one of claims 1 to 7, wherein the retractor is supported so as to be movable in a height direction of the seat. Detecting means for detecting whether or not the restraining member pulled out from the retractor is fixed to the seat;
9. The occupant according to claim 8, further comprising means for controlling the retractor to move downward when the detecting means detects that the restraint member is fixed to the seat. Protective device.

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