JP5246109B2 - Airbag device for motorcycle - Google Patents

Description

  The present invention relates to an airbag apparatus for a motorcycle that is mounted on a motorcycle and includes an airbag for protecting an occupant during a collision.

  Conventionally, as an airbag apparatus for a motorcycle, when an inflating gas flows in, an occupant who expands and inflates upward from a storage part near the left and right legs of the occupant seated on the seat and moves to the front side. An airbag that can be received and completed to be inflated, a support material that is disposed on the front side of the airbag, and a support material that can support the front side of the airbag when the inflation is completed. And a drive mechanism that raises it to a proper support position (see, for example, Patent Document 1). And in this airbag apparatus, the airbag itself was utilized as a drive source of the drive mechanism which raises a support material. That is, this airbag is arranged at the center of the front portion of the airbag and inflates first, and inflates so as to cover the periphery of the primary inflation bag portion to form the outer peripheral wall of the airbag. A connecting belt connected to the upper end of the support material so that the support material can be pulled up from the storage site side as a drive source for pulling up the support material. It was connected with the upper end side of the front surface of a primary expansion bag part.

JP 2006-168712 A

  However, in the conventional airbag apparatus for a motorcycle, the primary inflation bag portion as a drive source for raising the support material is composed of the airbag itself arranged on the rear side of the support material, and is deployed and inflated from the storage site. When rising, it is difficult to pull the support material straight upward, and the upper end of the support material is pulled up while pulling backward. Therefore, in the conventional airbag device, it takes time to raise the support material from the storage position to the support position of the airbag, and there is room for improvement.

  The present invention solves the above-described problems, and provides an airbag apparatus for a motorcycle that can stably and quickly raise a support material that supports an airbag from a storage position to a support position. For the purpose.

The airbag apparatus for a motorcycle according to the present invention is an occupant that expands and inflates upward from a storage portion between the left and right legs of an occupant seated on a seat and moves forward when inflating gas flows An airbag that can receive and complete inflation;
A support member disposed on the front side of the airbag so as to be able to support the front side of the airbag when the inflation is completed;
A drive mechanism for raising the support material from the storage position to a support position capable of supporting the airbag;
A motorcycle airbag device comprising:
The drive mechanism
A holding portion for holding the support material in a liftable manner;
During operation, the lower surface of the support material at the storage position with the lower side open along the vertical axis is the bottom surface, and the push surface is along the axial direction of the support material. Concentrically, a drive source that pushes upward and raises;
It is characterized by comprising.

  In the airbag apparatus for a motorcycle according to the present invention, when the drive source of the drive mechanism is activated during operation, the pushing surface of the support material is concentrically upward with the support material along the axial direction of the support material. By pushing up, the support material can be raised from the storage position to the support position stably, smoothly and quickly without being tilted back and forth and left and right in a state where the support material is held by the holding portion so as to be lifted.

  Therefore, in the motorcycle airbag apparatus according to the present invention, the support member that supports the airbag can be stably and quickly raised from the storage position to the support position.

  In the airbag apparatus for a motorcycle according to the present invention, it is desirable that the drive mechanism is configured to place the support material at the support position before the airbag is completely inflated at the time of operation. When the airbag that has completed the inflation receives the occupant, the support material is already disposed at the support position, so that the airbag is stably supported on the front side and does not move. In addition, it has good cushioning properties and can catch the passenger.

  Further, in the airbag apparatus for a motorcycle according to the present invention, the drive mechanism is configured to operate at the time of the collision prediction before the actual collision of the motorcycle, and the airbag is configured at the time of the actual collision of the motorcycle. It is desirable to configure so as to expand and expand from the storage site. In such a configuration, when the collision is predicted before the actual collision of the motorcycle, the drive mechanism is simply operated and the support material is raised to the support position. Thereafter, if there is no actual collision of the motorcycle. The airbag does not expand and inflate. Therefore, even if the drive mechanism operates, if there is no actual collision and the airbag does not deploy and inflate, the support member is returned to the storage position and the drive mechanism is restored. It can be reused in a resource-saving and economical manner. Further, since the drive mechanism only has to raise the support material to the support position at the time of the collision prediction before the actual collision of the motorcycle, the ascent speed of the support material in the drive source may be suppressed and used. As the drive source, a general-purpose one such as a spring or a motor can be selected, and the degree of freedom in selecting the drive source can be improved.

  In this case, in the airbag apparatus for a motorcycle according to the present invention, it is desirable that the drive mechanism itself is configured to be reusable by returning the support material to the storage position after the operation. In such a configuration, even if the drive mechanism is operated, the support member can be returned to the storage position and the drive mechanism can be reused. This further saves resources and is economical.

Further, in the airbag apparatus for a motorcycle according to the present invention, the drive source of the drive mechanism is constituted by a gas generator capable of generating a working gas during operation,
Support material is
The working gas generated from the gas generator is pushed up from the storage position to the support position.
A gas supply path for supplying the working gas to the airbag may be provided so that the working gas can be used as the inflation gas for the airbag.

  In such a configuration, when the driving mechanism is operated and the gas generator as the driving source generates the working gas, the supporting material is raised from the storage position to the supporting position of the airbag by the working gas. Then, the inflation gas composed of the working gas flows into the airbag through the gas supply path, and the airbag completes the inflation. Therefore, the drive source that raises the support material can also be used as a supply source for the inflation gas when the airbag is deployed and inflated. Therefore, the number of components of the airbag device can be reduced, and the assembly man-hour and cost of the airbag device can be reduced. Can be reduced.

1 is a side view of a motorcycle equipped with a motorcycle airbag device according to a first embodiment of the present invention. It is a schematic fragmentary sectional view along the front-back direction of the airbag apparatus of 1st Embodiment. It is a perspective view which shows the state which independently inflated the airbag used for the airbag apparatus of 1st Embodiment in the state which provided the retainer. It is the schematic front view seen from the front side of the airbag apparatus of 1st Embodiment. It is the schematic front view seen from the front side which shows the operation state of the airbag apparatus of 1st Embodiment. It is a side view which shows the operating state of the airbag apparatus of 1st Embodiment. It is a side view which shows the operating state of the airbag apparatus of 1st Embodiment, and shows the state after FIG. It is a side view which shows the operation state of the airbag apparatus of 1st Embodiment, and shows the state after FIG. It is a general | schematic fragmentary sectional view along the front-back direction of the airbag apparatus of 2nd Embodiment. It is the schematic front view seen from the front side of the airbag apparatus of 2nd Embodiment. It is a schematic side view which shows the operating state of the airbag apparatus of 2nd Embodiment. It is a general | schematic fragmentary sectional view along the front-back direction of the airbag apparatus of 3rd Embodiment. It is the schematic front view seen from the front side of the airbag apparatus of 3rd Embodiment. It is a schematic side view which shows the operating state of the airbag apparatus of 3rd Embodiment. It is a general | schematic fragmentary sectional view along the front-back direction of the airbag apparatus of 4th Embodiment. It is the schematic front view seen from the front side of the airbag apparatus of 4th Embodiment. It is a schematic side view which shows the operating state of the airbag apparatus of 4th Embodiment. It is a general | schematic fragmentary sectional view along the front-back direction of the airbag apparatus of 5th Embodiment. It is the schematic front view seen from the front side of the airbag apparatus of 5th Embodiment. It is a schematic side view which shows the operating state of the airbag apparatus of 5th Embodiment.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A motorcycle airbag device (hereinafter simply referred to as an airbag device) 10 according to a first embodiment is a scooter type as shown in FIG. The motorcycle 1 is mounted on a motorcycle (hereinafter simply referred to as a motorcycle) 1, and the motorcycle 1 has a foot F of an occupant D between a seat 7 on which the occupant D is seated and a handle 5 in front of the seat 7. A step 6 to be placed is disposed, and the airbag device 10 is disposed near the front end of the seat 7.

  A fork 3a on the front wheel of the motorcycle 1 is provided with a collision detection sensor 52 including an acceleration sensor capable of detecting a frontal collision of the two-wheeled vehicle 1, and a frontal collision of the two-wheeled vehicle 1 is predicted in the vicinity thereof. A collision prediction sensor 53 composed of a millimeter wave radar or the like is disposed so as to be able to do so. The collision detection sensor 52 and the collision prediction sensor 53 are electrically connected to a control device 51 disposed in the body 2. When the collision of the two-wheeled vehicle 1 is predicted based on the signal from the collision prediction sensor 53, the control device 51 activates a gas generator 49 as a drive source 48 of the drive mechanism 39 to be described later, from the collision detection sensor 52. When the collision of the two-wheeled vehicle 1 is detected based on the signal, the inflator 24 described later is operated (see FIG. 2).

  Note that the front-rear and left-right directions in the specification and the like of the present application are based on the two-wheeled vehicle 1 at the time of forward movement, and coincide with the front-rear, left-right directions of the occupant D seated on the two-wheeled vehicle 1.

  As shown in FIGS. 1 and 2, the airbag device 10 stores and holds the airbag 11, the inflator 24 that supplies inflation gas to the airbag 11, and the folded airbag 11, and also holds the inflator 24. A case 26, a support member 32 that supports the front surface 11c side of the inflated airbag 11 on the rear surface 32a side, and a drive mechanism 39 that raises the support member 32 from the storage position RP to a support position SP that can support the airbag 11. It is configured with.

  As shown in FIGS. 1 to 3, the airbag 11 includes a bag-shaped peripheral wall 12 that expands and a regulation belt 19 that is disposed on the rear surface 11 d side of the lower portion 11 b of the airbag 11. The bag-shaped peripheral wall 12 includes a substantially square bottom wall portion 13 and a substantially rectangular tube-shaped peripheral wall main body portion 14 extending upward from the outer peripheral edge of the bottom wall portion 13 in a bag shape. The airbag 11 has a substantially trapezoidal shape in which the shape seen from the front side is larger than that of the lower portion 11b and the width of the upper portion 11a is larger than that of the lower portion 11b. 11d (which is also the rear surface 16 of the peripheral wall main body 14) is a restraining surface 18 that receives the upper body U of the occupant D, and the thickness viewed in the lateral direction from the lower portion 11b to the upper portion 11a is viewed from the side. It is comprised as a taper shape which increases to the back side. The vicinity of the center in the left-right direction of the front surface 11 c of the airbag 11, in other words, the vicinity of the center in the left-right direction of the front surface 15 of the peripheral wall main body 14 becomes the support surface 17 supported by the rear surface 32 a of the support member 32.

  The bottom wall 13 of the airbag 11 is formed with a circular inflow opening 13a for allowing the inflation gas to flow in, and the bolts 21a of the retainer 21 are inserted through the periphery of the inflow opening 13a. A mounting hole (not shown) is formed. The peripheral edge of the inflow opening 13a is pressed by the retainer 21 and attached to the bottom wall 27 of the case 26 (see FIG. 2).

  The regulation belt 19 has a base end 19a side coupled to a lower portion on the rear surface 16 side of the peripheral wall main body 14 and a tip (lower end) 19b side coupled to a fixing rod 30 of the case 26. After completion of the inflation, when the upper body U of the occupant D moving forward on the restraint surface 18 on the rear surface 11d side is received, the rear edge side of the peripheral edge of the inflow opening 13a of the airbag 11 is moved forward so as to be broken and damaged. In order to prevent this, it is arranged to restrict the upward movement of the restraining surface 18.

  The case 26 constitutes a housing part for the folded airbag 11, and is made of a box-shaped sheet metal having an upper opening, and has a rectangular plate-like bottom wall portion 27 and the vicinity of the outer peripheral edge of the bottom wall portion 27. And a peripheral wall portion 28 having a substantially rectangular tube shape extending upward. The bottom wall portion 27 is formed with a circular opening 27a into which the main body portion 24a of the inflator 24 is inserted from below. The case 26 is provided with a connection bracket (not shown), and this connection bracket is connected and fixed to a bracket 4 extending from the frame 3 on the body (vehicle body) 2 side of the motorcycle 1 (see FIG. 1). As a result, the case 26 holding the airbag 11 and the inflator 24 is disposed in the vicinity of the left and right leg portions K of the seated occupant D near the front end of the seat 7 and is connected and fixed to the body 2 side. The bottom wall 27 is provided with a fixing rod 30 for fixing the front end 19b of the regulating belt 19 provided on the lower side of the rear surface 11d of the airbag 11 on the upper surface side of the portion protruding rearward from the peripheral wall portion 28. Has been.

  As shown in FIG. 2, the inflator 24 includes a cylindrical main body portion 24 a having a plurality of gas discharge ports 24 b on the upper side, and a flange portion 24 c that protrudes from the outer peripheral surface of the main body portion 24 a. The flange portion 24 c is fixed to the lower surface side of the bottom wall portion 27 of the case 26.

  A substantially square annular retainer 21 having bolts 21a at four corners is disposed on the periphery of the inflow opening 13a of the airbag 11. Then, the bolt 21a of the retainer 21 is passed through the peripheral edge of the inflow opening 13a of the airbag 11, the bottom wall portion 27 of the case 26, and the flange portion 24c, and is fastened to the nut 22, thereby fixing the flange portion of the inflator 24. 24 c is fixed to the bottom wall 27 of the case 26 together with the airbag 11.

  The inflator 24 is electrically connected to a control device 51 mounted on the two-wheeled vehicle 1 by a lead wire (not shown), and when the two-wheeled vehicle 1 collides front, the control device 51 detects from the collision detection sensor 52 that detected the collision. Then, an operation signal is output to the inflator 24.

  As shown in FIGS. 1, 2, 4, and 5, the support member 32 is disposed adjacent to the front side of the case 26. And a horizontal flange 34 that extends to the left and right sides at the upper end of the flange 33, and is held by the holding portion 40 of the drive mechanism 39 so as to be able to ascend. The support member 32 is configured such that the width dimension in the left-right direction can protrude upward from between the left and right leg portions K of the occupant D, and is raised from the storage position RP and disposed at the support position SP of the airbag 11. The rear surface 32a can support the front surface 11c side of the upper portion 11a of the airbag 11 that has been inflated, and the upper recumbent portion 34 is covered by the upper portion 11a of the airbag 11 so that the rear side is covered. Is set.

  Further, four stopper pins 36 protrude from the outer peripheral surface of the vertical flange portion 33 on the lower end side. Further, the lower end surface of the vertical hook portion 33 is a pressing surface 35 to which the pressing force of the driving source 48 of the driving mechanism 39 is applied. The push-up surface 35 is a downward lower surface whose lower side is opened along the axial direction AD in the vertical direction of the support member 32 at the storage position RP (in the embodiment, it coincides with the axial direction of the vertical flange portion 33). On the side.

  Since the support member 32 and the airbag 11 are covered with the cover 8 constituting the front end side of the seat 7 in the housed state, the cover 8 is pushed open when protruding upward. , Projecting upward.

  The drive mechanism 39 includes a holding unit 40 that holds the support member 32 so that the support member 32 can be raised, and a drive source 48 for raising the support member 32. The holding portion 40 includes a holding main body portion 41 and a guide sleeve 46 that hold the vertical rod portion 33 provided with the axial direction AD along the vertical direction of the support member 32 so as to be movable upward. . The guide sleeve 46 is connected and held to the front surface side of the peripheral wall portion 28 of the case 26, and guides the upward movement of the vertical hook portion 33 by sliding the outer peripheral surface of the vertical hook portion 33 when the vertical hook portion 33 is lifted. It will be.

  The holding main body 41 is composed of a guide tube portion 42 having a substantially square tube shape, and the guide tube portion 42 is connected and held to the frame 3 side by a bracket (not shown) extending from the bracket 4 and the like, and from the front side of the case 26. It arrange | positions so that it may extend below. The inner peripheral surface 42a of the guide cylinder portion 42 is set to have a substantially square columnar inner peripheral shape so that the vertical flange portion 33 of the support member 32 can be slidably held during the upward movement. The inner peripheral surface 42a is provided with a concave groove 42b along the vertical direction through which a stopper pin 36 provided at the lower end of the vertical flange 33 can be inserted.

  In addition, the guide cylinder portion 42 is provided with an upper stopper 43 and a lower stopper 44 for restricting the position of the support member 32 by contacting the stopper pins 36 at both upper and lower ends on the inner peripheral surface 42a side. As shown in FIG. 2, the support member 32 is disposed so as to be prevented from being lowered and restricted to the storage position RP if the stopper pin 36 is in contact with the lower stopper 44. If 36 is brought into contact with the upper stopper 43, the support member 32 is prevented from rising and is positioned so as to be regulated at the support position SP.

  In the case of the first embodiment, the drive source 48 includes a gas generator 49 that discharges the working gas AG, and the gas generator 49 is disposed so as to close the lower end of the guide cylinder portion 42. . Similar to the inflator 24 that supplies the inflation gas to the airbag 11, the gas generator 49 generates combustion gas by ignition of the squib and uses the combustion gas. When the gas generator 49 is operated, the guide cylinder portion 42 that functions as a cylinder is filled with the operating gas AG. Therefore, the operating gas AG pushes the pushing surface 35 of the vertical rod portion 33 to the support member 32. The vertical hook 33 that functions as a piston is pushed up by pressing upward along the axial direction AD and concentrically with the support member 32. Then, after the support material 32 is pushed up by the working gas AG, the stopper pin 36 is brought into contact with the upper stopper 43 to be disposed at the support position SP (see FIGS. 5 to 7).

  As described above, the operation of the gas generator 49 is controlled by the control device 51, and when the control device 51 inputs a signal predicting a collision of the motorcycle 1 from the collision prediction sensor 53, the gas generator 49 49 will be activated.

  Therefore, in the airbag device 10 according to the first embodiment, when the motorcycle 1 is predicted to collide with a four-wheeled vehicle or the like during traveling, the control device 51 predicts the collision of the motorcycle 1 from the collision prediction sensor 53. Since the signal is input, the gas generator 49 as the drive source 48 of the drive mechanism 39 is operated. Then, as shown in FIGS. 5 to 7, the gas generator 49 fills the operation gas AG in the guide cylinder portion 42, and the pushing surface 35 of the vertical flange portion 33 is caused by the pressure of the operation gas AG. Along with the axial direction AD of the support member 32 and concentrically with the support member 32, the support member 32 is pressed upward and rises. Then, the support member 32 is pushed up while sliding in the guide tube portion 42, and the stopper pin 36 is brought into contact with the upper stopper 43 to be disposed at the support position SP.

  After that, if the motorcycle 1 actually collides, the control device 51 inputs a signal that detects the collision of the motorcycle 1 from the collision detection sensor 52 and operates the inflator 24. Therefore, the airbag 11 The inflating gas IG from the inflator 24 is flowed in, as shown in FIG. 5B and FIGS. 7 and 8, from the storage portion (case 26) near the left and right legs K of the occupant D seated on the seat 7. The expansion is completed in a shape capable of restraining the upper body U of the occupant D that expands and expands upward and moves forward. At this time, the support member 32 is disposed on the front side of the airbag 11 so as to be able to support the front surface 11c of the airbag 11 before the inflation is completed. The occupant D can be received by the restraint surface 18 with good cushioning properties without being moved forward by being supported by the rear surface 32a of the support member 32.

  As described above, in the airbag device 10 according to the first embodiment, when the drive source 48 of the drive mechanism 39 is activated during operation, the push surface 35 of the support material 32 is moved along the axial direction AD of the support material 32. Since the support member 32 is pushed up concentrically with the support member 32, the support member 32 can be lifted and held in the guide tube portion 42 and the guide sleeve 46 of the holding portion 40 without tilting back and forth and left and right. It is possible to raise the storage position RP to the support position SP stably and smoothly.

  Therefore, in the airbag apparatus 10 according to the first embodiment, the support member 32 that supports the airbag 11 can be stably and quickly raised from the storage position RP to the support position SP.

  In the airbag apparatus 10 according to the first embodiment, the drive source 48 of the drive mechanism 39 is activated at the time of collision prediction, and the inflator 24 is activated after the actual collision of the motorcycle 1. 8, after the support member 32 is disposed at the support position SP, the airbag 11 is in a state of completing the inflation. Therefore, in 1st Embodiment, when the airbag 11 which completed the expansion | swelling receives the passenger | crew D, since the support material 32 has already been arrange | positioned in the support position SP, the airbag 11 stabilizes the front surface 11c side. Thus, the occupant D can be received with good cushioning properties without being supported by the support member 32 and moving.

  Further, in the airbag device 10 of the first embodiment, the drive mechanism 39 is configured to operate at the time of a collision prediction before the actual collision of the motorcycle 1, and the airbag 11 is configured to be the actual one of the motorcycle 1. At the time of a collision, it is configured to expand and inflate from the case 26 as a storage part. Therefore, in the first embodiment, when the collision is predicted before the actual collision of the motorcycle 1, the drive mechanism 39 is simply operated and the support member 32 is raised to the support position SP. If there is no actual collision, the airbag 11 is not deployed and inflated. Therefore, even if the drive mechanism 39 is operated, if there is no collision and the airbag 11 does not deploy and inflate, the support member 32 is returned to the storage position, the gas generator 49 as the drive source 48 is replaced, and the drive is performed. If the mechanism 39 is restored, the entire airbag device 10 can be reused in a resource-saving and economical manner. Further, the drive mechanism 39 may raise the support material 32 to the support position at the time of the collision prediction before the actual collision of the motorcycle 1, and may suppress the ascending speed of the support material 32 in the drive source 48. As a usable drive source 48, a gas generator 49 having a smaller output than the inflator 24, a general-purpose device such as a spring or a motor can be selected, and the degree of freedom in selecting the drive source 48 can be improved.

  The airbag apparatus 10A for a motorcycle according to the second embodiment shown in FIGS. 9 to 11 is configured to use a spring 59 as the drive source 58 of the drive mechanism 39A. The spring 59 is composed of a compression coil spring, and an upper end 59a is brought into contact with a ceiling surface 33b of a concave groove 33a provided so as to extend upward from a lower end of the vertical flange portion 33A of the support member 32A. The guide cylinder 42A is disposed in contact with the upper surface 45a of the bottom wall 45 of the guide cylinder 42A.

  The ceiling surface 33b is a downward lower surface side that is opened downward along the vertical axial direction AD of the support member 32 at the storage position RP, and is a push-up surface 35 that is pushed up by the spring 50 in the support member 32A. Become.

  Further, a solenoid 55 whose operation is controlled by the control device 51 is disposed in the guide cylinder portion 42A constituting the holding main body portion 41 of the drive mechanism 39A. The solenoid 55 is provided with a return spring that, when energized, retracts the plunger 55a made of a movable iron core and, when energized, stops the plunger 55a to be restored to the state before it is retracted by a return spring provided therein. The pull type. When the control device 51 detects a collision prediction of the two-wheeled vehicle 1 based on a signal from the collision prediction sensor 53, the control device 51 outputs an operation signal to the solenoid 55. Therefore, the solenoid 55 causes the plunger 55a to be retracted. Become. Further, since the plunger 55a is pulled out from the locking hole 33c provided on the outer periphery near the lower end of the vertical hook portion 33A, the position restriction of the vertical hook portion 33A disposed at the storage position RP is released, Already, the spring 50 presses and raises the support member 32A upward along the axial direction AD of the support member 32A with respect to the pushing surface 35 of the support member 32A and concentrically with the support member 32A. Since the urging force is applied, the support member 32A is stably and rapidly raised from the storage position RP to the support position SP by the urging force (pressing force) of the spring 50.

  Also in the airbag device 10A of the second embodiment, stopper pins 36 are disposed on both the left and right sides of the rectangular columnar vertical flange 33A, and the support member 32A serves as a plunger 55a to the locking hole 33c. With the insertion, the stopper pin 36 is brought into contact with the lower stopper 44 to be regulated at the storage position RP, and the stopper pin 36 is brought into contact with the upper stopper 43 to be regulated at the support position SP.

  In the second embodiment, the vertical flange portion 33A of the support member 32A is provided with a concave groove 33a, the solenoid 55 is attached to the guide tube portion 42A, and the spring 59 is used as the drive source 58. However, it is only different from the first embodiment, and the same reference numerals as those in the first embodiment are attached to the same parts and components as those in the first embodiment.

  Also in the second embodiment, the control device 51 to which the drive source 58 of the drive mechanism 39A is operated at the time of the collision prediction and the signal from the collision detection sensor 52 is input after the actual collision of the motorcycle 1 is obtained. Since the inflator 24 is operated, as shown by the two-dot chain line in FIG. 11, after the support member 32A is disposed at the support position SP, the airbag 11 is in a state of completing the inflation. Therefore, also in 2nd Embodiment, when the airbag 11 which completed the expansion | swelling receives the passenger | crew D, since the support material 32A is already arrange | positioned in the support position SP, the airbag 11 stabilizes the front surface 11c side. Thus, the occupant D can be received with good cushioning properties without moving by being supported by the support member 32A, and the same actions and effects as in the first embodiment can be obtained.

  Further, in the second embodiment, when the collision is predicted before the actual collision of the motorcycle 1, the drive mechanism 39A is simply operated and the support member 32A is raised to the support position SP. If there is no actual collision, the airbag 11 is not deployed and inflated. If the airbag 11 is not deployed and inflated even when the drive mechanism 39A is activated, the support member 32A is returned to the storage position, the energization to the solenoid 55 is stopped, and the return provided inside the solenoid 55 is performed. If the plunger 55a is inserted into the locking hole 33c using a spring, the entire airbag apparatus 10A including the drive mechanism 39A can be re-used in a resource-saving and economical manner without replacing parts. Can be used.

  In the second embodiment, a general-purpose spring 59 is used as the drive source 58 of the drive mechanism 39A, and the airbag device 10A can be manufactured at low cost.

  In addition, when using a gas generator for a drive source, like the airbag apparatus 10B of 3rd Embodiment shown to FIGS. 12-14, or the airbag apparatus 10C of 4th Embodiment shown to FIGS. The driving source 68 may be configured by using the gas generator 69 together with the cloth 70 or the cloth-like airbag 71. In the airbag devices 10B and 10C according to the third and fourth embodiments, the vertical flange portions 33B and 33C have the concave grooves 33a having the ceiling surface 33b as the pushing surface 35, similarly to the support member 32A according to the second embodiment. The drive mechanisms 39B and 39C attach a resin bag 70 made of a synthetic resin such as a bag-like polypropylene or an air bag 71 made of a woven cloth such as polyamide near the lower ends of the guide tube portions 42B and 42C. A gas generator 69 similar to the gas generator 49 of the first embodiment is provided so as to close the lower ends of the guide cylinder portions 42B and 42C. The resin bag 70 and the airbag 71 are folded and accommodated in the guide tube portions 42B and 42C, respectively. Furthermore, also in these airbag apparatuses 10B and 10C, stopper pins 36 are disposed on both the left and right sides of the rectangular columnar vertical flange portions 33B and 33C. The terminal on the lower end side of the bag 70 or the airbag 71 is interposed and brought into contact with the lower stopper 44, so that the position is regulated at the storage position RP, and the stopper pin 36 is brought into contact with the upper stopper 43, thereby supporting the position SP. The position is restricted.

  Further, in the airbag 71 of the fourth embodiment, a tether 72 that regulates the separation distance (inner diameter dimension) of the inner peripheral surface so as to inflate in a cylindrical shape and the vicinity of the upper and lower intermediate portions does not inflate in a barrel shape. Are arranged in large numbers.

  In the third and fourth embodiments, only the above points are different from the first embodiment, and the same parts and components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  In the airbag apparatuses 10 </ b> B and 10 </ b> C of the third and fourth embodiments, when a collision is predicted when the motorcycle 1 travels, the control device 51 predicts a collision of the motorcycle 1 from the collision prediction sensor 53. Therefore, the gas generator 69 of the drive source 68 of the drive mechanisms 39B and 39C is operated. Then, as shown in FIGS. 12 to 14 or FIGS. 15 to 17, the working gas AG from the gas generator 69 is supplied to the resin bag 70 and the airbag 71, and the resin bag 70 and the airbag 71 are While pushing and expanding, the pushing surfaces 35 of the vertical flange portions 33B and 33C are pressed upward along the axial direction AD of the support materials 32B and 32C and concentrically with the support materials 32B and 32C. The materials 32B and 32C are pushed up while sliding in the guide tube portions 42B and 42C, and the stopper pins 36 are brought into contact with the upper stopper 43 to be disposed at the support position SP.

  After that, if the motorcycle 1 actually collides, the control device 51 inputs a signal that detects the collision of the motorcycle 1 from the collision detection sensor 52 and operates the inflator 24. Therefore, the airbag 11 The inflating gas IG from the inflator 24 is introduced, and as shown by the two-dot chain line in FIG. 14 and the two-dot chain line in FIG. The case 26) expands and expands upward from the case 26, and completes the expansion so that the upper body U of the occupant D moving forward can be restrained. At this time, the support members 32B and 32C are arranged on the front side of the airbag 11 so as to be able to support the front surface 11c of the airbag 11 before the inflation is completed. 11 is supported by the rear surfaces 32a of the support members 32B and 32C, can move forward, can receive the occupant D by the restraint surface 18 with good cushioning properties, and has the same functions and effects as the first embodiment. Can be obtained. Furthermore, in the third and fourth embodiments, the drive source 68 that pushes up the support members 32B and 32C is filled with the working gas AG from the gas generator 69 and swells to push up the support members 32B and 32C. The resin bag 70 and the airbag 71 are used to suppress the leakage of the working gas AG and to ensure airtightness, and the support materials 32B and 32C can be pushed up stably and quickly.

  Further, in the configuration in which the support material is pushed up using the gas generator, the operating gas AG of the gas generator 79 is replaced with the support material 32D as in the airbag apparatus 10D of the fifth embodiment shown in FIGS. Besides pushing up, the airbag 11D itself may be used to inflate.

  In the fifth embodiment, similar to the first embodiment, the support member 32D functions like a piston, and unlike the first embodiment, the support member 32D extends laterally from the lower end surface of the vertical flange portion 33D. A gas supply path 81 through which the working gas AG can flow is provided over the collar portion 34D, and the working gas AG as the inflation gas IG is supplied from the gas supply port 82 provided in the horizontal collar portion 34D to the airbag 11D. It is configured to supply to. In the support member 32D, the push-up surface 35 pushed up by the working gas AG is a ceiling surface 34a on the inner peripheral side of the horizontal flange portion 34D, and the ceiling surface 34a is located above and below the support material 32D at the storage position RP. It becomes the downward lower surface side with the lower side opened along the axial direction AD. Then, if the working gas AG of the gas generator 79 acts on the pushing surface 35, the working gas AG supports the pushing surface 35 along the axial direction AD of the support member 32D (vertical rod portion 33D). It will be pushed up concentrically with the material 32D.

  In the fifth embodiment, the collision prediction sensor 53 is not provided, and the control device 51 inputs a signal that detects the collision of the motorcycle 1 in the collision detection sensor 52, and the drive source of the drive mechanism 39D. The gas generator 79 as 78 will be operated.

  A belt-like valve element 83 that opens the gas supply port 82 is disposed just before the support member 32D reaches the support position SP at the periphery of the gas supply port 82 in the horizontal flange 34D. The valve body 83 is made of a flexible and heat-resistant strip, and the base end 83a is fixed to the lower end side of the guide cylinder portion 42D of the drive mechanism 39D, and the tip 83b is connected to the gas supply port. 82 is fixed to the peripheral edge of the upper edge. The length of the valve body 83 and the fixing force of the tip 83b to the periphery of the upper edge of the gas supply port 82 are just before the support member 32D is disposed at the support position SP, and the tip 83b is peeled off from the periphery of the gas supply port 82. Thus, the gas supply port 82 is set to be opened.

  Also in this airbag apparatus 10D, the stopper pins 36 are disposed on the left and right sides of the rectangular columnar vertical flange portion 33D, and the support member 32D has the stopper pin 36 attached to the lower stopper 44 of the guide cylinder portion 42D. The stopper pin 36 is brought into contact with the upper stopper 43 of the guide tube portion 42D and is restricted to the support position SP.

  Further, the airbag 11D is configured such that the bolt 21a of the retainer 21 is inserted into the bottom wall portion 13D, and the bolt 21a thus inserted is fixed to the bottom wall portion 27D of the case 26D with the nut 22 to thereby fix the bottom wall portion 13D to the case 26D. It is attached to the bottom wall portion 27D. Unlike the first embodiment, the bottom wall portions 13D and 27D are not provided with the inflow opening 13a or the opening 27a. Further, on the front surface 11c side of the upper portion 11a of the airbag 11D, a connecting portion 11e that wraps the recumbent portion 34D of the support member 32D and is connected to the recumbent portion 34D is disposed. In the airbag 11D, the connecting portion 11e is lifted and moved in accordance with the rise of the horizontal flange portion 34D of the support member 32D, and the upper portion 11a side is pulled and folded from the state of being folded in the case 26. It will be developed upward while eliminating.

  In the fifth embodiment, only the above-described configuration is different from that in the first embodiment, and the same parts and components as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment.

  And in the airbag apparatus 10 of 1st Embodiment of this 5th Embodiment, if the control apparatus 51 which detected the collision of the motorcycle 1 operates the gas generator 79 as the drive source 78 of drive mechanism 39D. The gas generator 79 supplies the working gas AG into the guide tube portion 42D. Therefore, the working gas AG pushes the pushing surface 35 of the support material 32D upward along the axial direction AD of the support material 32D, concentrically with the support material 32D. The guide cylinder portion 42D and the guide sleeve 46 can be raised from the storage position RP to the support position SP stably, smoothly and quickly without being tilted back and forth and left and right.

  Therefore, also in the airbag apparatus 10D of the fifth embodiment, the support member 32D that supports the airbag 11D can be stably and quickly raised from the storage position RP to the support position SP.

  And in 5th Embodiment, the airbag 11D has connected the connection part 11e by the side of the upper part 11a of the front surface 11c with the horizontal collar part 34D of the upper end of support material 32D, and arrangement | positioning to support position SP of support material 32D Thus, from the state of being folded in the case 26, the upper part 11a side is pulled to cancel the folding. Further, when the support member 32D rises from the storage position RP to the support position SP of the airbag 11D, the valve body 83 opens the gas supply port 82 of the gas supply path 81. Therefore, the inflation gas IG made of the working gas AG is flowed into the airbag 11D through the gas supply path 81, and the airbag 11D completes the inflation. At this time, the airbag 11 </ b> D is supported by the support member 32 </ b> D so that the forward movement is restricted, and the occupant D moving forward can be received with a cushioning effect secured.

  And in this 5th Embodiment, since the gas generator 79 as the drive source 78 which raises support material 32D can be utilized also as a supply source of the gas IG for expansion | swelling at the time of expansion | deployment of the airbag 11D, it is an airbag apparatus. The number of components of the entire 10D can be reduced, and the assembly man-hour and cost of the airbag apparatus 10D can be reduced.

  In each of the embodiments, the case where the airbag devices 10, 10A, 10B, 10C, and 10D are mounted on the scooter type motorcycle 1 is shown. However, the airbag of the present invention may be applied to other motorcycles such as a sports bike type. A bag device may be mounted.

1 ... (auto) motorcycles,
10, 10A, 10B, 10C, 10D (for motorcycles) airbag device,
11, 11D ... Airbag,
32, 32A, 32B, 32C, 32D ... support material,
35 ... Pushing surface,
39, 39A, 39B, 39C, 39D ... drive mechanism,
40 ... holding part,
48, 58, 68, 78 ... drive source,
49, 69, 79 ... gas generators,
59 ... Spring,
70: Resin bag,
71 ... Airbag,
81 ... gas supply path,
RP ... Storage position (for support material)
SP ... (support material) support position,
AG ... Working gas,
IG ... expansion gas,
D ... Crew,
K ... Legs.

Claims (5)

An airbag that expands and expands upward from a storage part near the left and right legs of an occupant seated in the seat when inflating gas flows in, and receives the occupant moving forward;
A support member disposed on the front side of the airbag so as to be able to support the front side of the airbag when the inflation is completed;
A drive mechanism for raising the support material from a storage position to a support position capable of supporting the airbag;
A motorcycle airbag device comprising:
The drive mechanism is
A holding part for holding the support material so as to be raised;
In operation, the downward lower surface side of the support member at the storage position that is open downward along the vertical axial direction is defined as a push surface, the push surface along the axial direction of the support material, and A drive source that presses and rises concentrically with the support;
An airbag device for a motorcycle, comprising:   2. The airbag apparatus for a motorcycle according to claim 1, wherein the drive mechanism is configured to arrange the support material at a support position when the drive mechanism is in operation before the airbag is completely inflated. 3. . The drive mechanism is configured to operate at the time of a collision prediction before an actual collision of the motorcycle;
The airbag apparatus for a motorcycle according to claim 1 or 2, wherein the airbag is configured to be deployed and inflated from a storage portion at the time of an actual collision of the motorcycle.   4. The airbag apparatus for a motorcycle according to claim 3, wherein the drive mechanism is configured to be able to be reused by returning the support material to a storage position after operation. 5. The drive source of the drive mechanism is composed of a gas generator capable of generating a working gas during operation,
The support material is
The working gas generated from the gas generator is configured to be pushed up from the storage position to the support position, and
The gas supply path for supplying the working gas to the airbag is provided so that the working gas can be used as an inflation gas for the airbag. Or the airbag apparatus for motorcycles of Claim 2.

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