TW201945234A - Airbag device for riding type vehicle - Google Patents

Abstract

In order to dispose an airbag device compactly and deploy an airbag in a vertical direction, there is provided an airbag device for a riding type vehicle, which has: an airbag (52a); a retainer (52) which receives the airbag (52a); and an inflator (51) which generates gas that deploys the airbag (52a), and which is fixed to a frame (30) of the vehicle and is disposed on a stem pipe (31) inserted into a handle base part (42) in which handle bars (41) are connected to the left and right sides thereof.

Description

   Airbag device for straddle type vehicle   

The invention relates to an airbag device for a straddle type vehicle.

Conventionally, in the airbag device of a straddle-type vehicle, it is known to release the gas upward from an inflator provided at the bottom of the airbag device, so that the airbag can be easily deployed upward (for example, Patent Document 1). .

    [Prior technical literature]         [Patent Literature]    

[Patent Document 1]

Japanese Patent Laid-Open No. 2015-145151

However, in the airbag device of a straddle-type vehicle, it is desirable to arrange the airbag device closely and to deploy the airbag as vertically as possible to properly protect the occupant. The present invention has been made in view of the above circumstances, and an object thereof is to allow an airbag device to be closely arranged in an airbag device of a straddle-type vehicle and to deploy the airbag vertically upward.

The present invention is characterized by being fixed to an airbag (52a), a holder (52) that houses the airbag (52a), and an inflator (51) that generates a gas that expands the airbag (52a). The frame (30) of the vehicle is arranged on a stem tube (31), which is inserted into a handle base (42) that is connected to the handle lever (41) left and right.

Furthermore, in the above invention, the airbag device may be disposed between the instrument (60) mounted on the handlebar (41) and the stem tube (31) when viewed from the side of the vehicle.

Furthermore, in the above invention, the airbag device may be disposed more forward than the left and right end portions (45a) of the handlebar (41) when viewed from the side of the vehicle.

Furthermore, in the above invention, the airbag device may be disposed between a handle case (23) covering the upper portion of the handle lever (41) and an inner case (22) covering the lower portion of the handle lever (41) from the rear.

The airbag device for a straddle-type vehicle according to the present invention includes an airbag, a holder for storing the airbag, and an inflator that generates a gas that deploys the airbag, is fixed to the frame of the vehicle, and is disposed on a stem tube. On the other hand, the stem tube is inserted into the base of the handle connected to the handlebar left and right. According to this configuration, the airbag module can be arranged near the handlebar, and the airbag module can be arranged near the occupant's head to the upper half of the chest. Therefore, the airbag can be formed tightly, and the time required for the deployment of the airbag can be shortened. In addition, since the handlebar is arranged outside the vehicle in the left-right direction of the stem tube, the airbag can be deployed vertically upward by using the space above the stem tube and between the handlebar.

Furthermore, in the above invention, the airbag device of the straddle-type vehicle may be disposed between the instrument mounted on the handlebar and the stem tube when viewed from the side of the vehicle. According to this configuration, it is possible to arrange the airbag while maintaining the layout of the handlebar and the instrument. In addition, an airbag module can be arranged near the head of the occupant to the upper half of the chest, and the airbag can be formed tightly.

Furthermore, in the above invention, the airbag device may be disposed more forward than the left and right ends of the handlebar when viewed from the side of the vehicle. According to this configuration, the airbag module can be arranged in front of the occupant and near the head to the upper half of the chest.

Furthermore, in the above invention, the airbag device may be disposed between a handle case covering the upper portion of the handle bar and an inner case covering the lower portion of the handle bar from behind. According to this configuration, the airbag module can be arranged without changing the external layout of the two-wheeled locomotive.

1‧‧‧ Two-wheeled locomotive

2‧‧‧ front wheel

3‧‧‧ rear wheel

10‧‧‧Seat

16‧‧‧ Fork

16a‧‧‧Inner tube

17‧‧‧ rear buffer

20‧‧‧ front case

21‧‧‧Front side shell

22‧‧‧Inner shell

23‧‧‧Handle shell

24‧‧‧ pedal

25‧‧‧pedal shell

26‧‧‧body side shell

27‧‧‧ headlight

29‧‧‧ rear view mirror

30‧‧‧Main Frame (Framework)

31‧‧‧ stem tube

32‧‧‧ steering head

33‧‧‧Mounting Department

40‧‧‧handle assembly

41‧‧‧Handlebar

42‧‧‧handle base

43‧‧‧Connection Department

44‧‧‧ elevated

45‧‧‧ Grip Department

45a‧‧‧end

46‧‧‧Bridge

50‧‧‧Airbag Module

51‧‧‧ Inflator

52‧‧‧ retainer

52a‧‧‧Airbag

52b‧‧‧ opening

60‧‧‧Instrument

C‧‧‧ body shell

F‧‧‧ body frame

FR‧‧‧ front of the car body

M‧‧‧ Gearbox

U‧‧‧Unit Swing Engine

UP‧‧‧ Above the body

FIG. 1 is a left side view of a two-wheeled locomotive having an airbag device according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view of a left side surface of a handle assembly and an airbag module of a two-wheeled locomotive.

FIG. 3 is a rear perspective view showing the stem tube and the airbag module.

Fig. 4 is a rear perspective view showing the handle assembly.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings. In addition, in the description, the description of the directions such as front-back, left-right, and up-down directions is the same as the direction with respect to the vehicle body unless otherwise specified. The symbol FR shown in each figure indicates the front of the vehicle body, and the symbol UP indicates the upper side of the vehicle body.

FIG. 1 is a left side view of a motorcycle having an airbag device according to an embodiment of the present invention. The two-wheeled locomotive 1 (a straddle type vehicle) is a scooter type vehicle having a lower pedal 24 on which a driver (passenger) seated on the seat portion 10 places a foot. The two-wheeled locomotive 1 is provided with a front wheel 2 in front of the body frame F, and a rear wheel 3 as a driving wheel is pivotally supported by a unit swing engine U (unit swing power unit) connected to the rear of the body frame F. The vehicle body frame F is covered with a resin-made vehicle body casing C (vehicle body).

The vehicle body frame F includes a main frame 30 protruding rearward and downward from a front portion of the vehicle body, and a seat portion guide rail (not shown) extending in a forward and backward direction below the seat portion 10. The unit swing engine U is a unit swing type integrating an engine (not shown) and a transmission case M that houses a belt-type stepless speed change mechanism (not shown), and also has a swing arm that supports the rear wheel 3. Its function. A rear bumper 17 is set up between the rear part of the unit swing engine U and the rear part of the vehicle body frame F.

The vehicle body casing C includes a front casing 20 covering the lower portion of the handlebar 41 and a pair of left and right front casings 21 connected to the lower edge of the side of the front casing 20 and extending downward. The vehicle body shell C also includes an inner shell 22 that is connected to the left and right edge portions of the front shell 20 and the front side shell 21 and covers the lower part of the handle lever 41 from behind; Part of it. The handle housing 23 is an upper part of the handle bar 41 and covers the center in the vehicle width direction. The front case 20, the front-side case 21, and the inner case 22 are fixed to the main frame 30.

In addition, the grip portion 45 provided on the upper portion of the handle bar 41 is projected to the left and right sides of the vehicle than the handle housing 23 and protrudes rearward. The handle housing 23 is rotatable relative to the main frame 30 together with the handle bar 41. In addition, the rearmost portion in the vehicle front-rear direction of the handlebar 41 becomes an end portion 45 a of the grip portion 45. Further, a pedal 24 that continues to the lower edge of the inner shell 22 and extends rearward, a bottom shell 25 that covers the pedal 24 from the left and right sides, and a main body shell 26 that covers the lower part of the seat portion 10 are also included in the vehicle body shell C. in. A headlight 27 is provided on the front surface of the handle housing 23. A meter 60 that displays the speed and the like of the two-wheeled locomotive 1 is provided on the upper part of the handle housing 23 and in the center in the vehicle width direction. The headlight 27 and the meter 60 are attached to the handle bar 41 together with the handle housing 23, and as the handle portion 45 of the handle bar 41 is operated, they are turned integrally with the handle portion 45. A rearview mirror 29 is attached to the grip portion 45.

A handle base 42 connected to the lower end of the handle bar 41 is rotatably supported on the front end of the main frame 30. A pair of left and right front forks 16 are attached to a lower end of the handle base 42 via a bridge 46. The front wheel 2 is pivotally supported at the lower end of the front fork 16 and is manipulated by the operation of the grip portion 45 of the handle assembly 40. An airbag module 50 (airbag device) is provided above the handle base 42.

FIG. 2 is a partial cross-sectional view of a left side surface of a handle assembly and an airbag module of a two-wheeled locomotive, and FIG. 3 is a rear perspective view of a stem tube and an airbag module. 4 is a rear perspective view of the handle assembly. As shown in FIGS. 2 and 4, the handle assembly 40 is composed of left and right handle bars 41, a handle base 42, and a bridge 46. The handle base portion 42 is formed in a cylindrical shape, and a handle lever 41 is attached to each of the side portions in the left-right direction of the vehicle. Further, a bridge member 46 is fixedly provided at the lower end of the handle base portion 42 and extends in the left-right direction of the vehicle. The left and right ends of the bridge member 46 respectively hold inner tubes 16a. The stem tube 31 is inserted into the handle base 42 and the bridge 46. Thereby, the handlebar 41 can be manipulated, and the front wheel 2 held by the front fork 16 is manipulated by the manipulation of the handlebar 41.

The handlebar 41 is a grip 43 extending from the handle base 42 in the left-right direction of the vehicle, a raised portion 44 protruding upward from the connecting portion 43, and a grip extending from the upper end of the raised portion 44 in the left-right direction of the vehicle. 45 by the unit. The handle base 42 is inserted into a stem tube 31 which is erected on the upper surface of the front end of the main frame 30. Further, as shown in Fig. 3, a steering head 32 is attached to the upper end portion of the stem tube 31. The handle base 42 is rotatably supported between the main frame 30 by a bearing (not shown) provided at the lower portion of the steering head 32 and the bridge 46.

The upper end of the stem tube 31 is provided with a mounting portion 33 on which the airbag module 50 is mounted. When viewed from the front-rear direction of the vehicle, the mounting portion 33 is configured by bending a plate-like member in a U-shape. The mounting portion 33 is provided to protrude upward from the steering head 32 in a state where the steering head 32 is mounted on the stem tube 31. The left and right ends of the upper portion of the mounting portion 33 are mounted on the lower surface of the holder 52. The mounting portion 33 avoids the inflator 51 protruding downward from the lower surface of the holder 52 to fix the airbag module 50 to the steering head 32. Accordingly, the airbag module 50 is mounted on the mounting portion 33 in a state where the handle base portion 42 is mounted on the stem tube 31 and the steering head 32 is mounted. The airbag module 50 is integrally fixed to the stem tube 31 by the mounting portion 33.

The airbag module 50 is mounted on the mounting portion 33 so as to be located between the raised portions 44 of the handle lever 41. The raised portion 44 is formed so as to protrude upward from the connecting portion 43 and expand outward in the left-right direction of the two-wheeled locomotive 1. In addition, when the handle lever 41 is rotated between the raised portions 44, the airbag module 50 and the raised portions 44 are separated from each other by a sufficient distance.

The airbag module 50 is composed of an inflator 51 provided at a lower portion of the airbag module 50, a holder 52 provided on the inflator 51, and an airbag 52a folded and held in the holder 52. Further, an opening portion 52b is provided at the lower portion of the rear surface of the holder 52 in the front-rear direction.

The airbag module 50 is held in the front case 20 and the handle case 23 while being mounted on the stem tube 31. The front case 20 is supported by the main frame 30. The handle housing 23 is supported by the handle lever 41 and is configured to be rotatable integrally with the grip portion 45 of the handle lever 41. In addition, a sufficient gap is provided between the inner peripheral portion of the handle case 23 and the airbag module 50 for the handle case 23 to rotate.

A meter 60 is disposed above the airbag module 50 and between the grip portions 45. Accordingly, the airbag module 50 is disposed between the stem tube 31 and the meter 60 when viewed from the side of the vehicle. The airbag module 50 is disposed further forward than the end portion 45 a of the grip portion 45 in the vehicle front-rear direction. The meter 60 is attached to the handle case 23 and rotates together with the handle case 23 by manipulation of the grip portion 45. An airbag module 50 is disposed between the handle case 23 and the inner case 22. As shown in FIG. 2, the inner case 22 covers the handle base 42 and the airbag module 50 from the rear in the vehicle front-rear direction. In addition, the handle housing 23 positions the stem tube 31 on the rotation shaft, and covers the upper portion of the airbag module 50 from above in the vehicle vertical direction. Therefore, when the handle case 23 is rotated by the rotation of the handle lever 41, the airbag module 50 is also located between the handle case 23 and the inner case 22.

Next, the effect of the above configuration will be described. When the grip portion 45 of the handle lever 41 is rotated, the handle base portion 42 connected to the handle lever 41 will rotate with the stem tube 31 as a rotation axis. In addition, the front fork 16 rotates together with the bridge 46 connected to the handle base 42, and the front wheel 2 is manipulated. That is, the stem tube 31 does not rotate, but the handle base 42 mounted on the outside of the stem tube 31 rotates integrally with the handle lever 41, and the front wheel 2 is manipulated.

In addition, since the airbag module 50 is disposed on the stem tube 31 via the mounting portion 33, the position and posture of the airbag module 50 are fixed relative to the main frame 30 irrespective of the rotation of the handle lever 41. Therefore, an opening portion that is opened when the airbag 52a is deployed is provided in the inner case 22 corresponding to the position of the opening portion 52b of the holder 52, so that the airbag 52a can be deployed. In addition, the opening portion 52b of the holder 52 can be exposed from the inner case 22 as well.

The handle lever 41 projects outward from the handle base 42 in the left-right direction of the vehicle. Therefore, a space for disposing the airbag module 50 is formed above the stem tube 31 provided with the handle base 42. The airbag module 50 is supported by the main frame 30 via the stem tube 31. Thereby, the load of the airbag module 50 is supported by the main frame 30. In addition, the operation of the handlebar 41 is not affected by the weight of the airbag module 50. An airbag module 50 is arranged between the handlebars 41. Even if the handlebars 41 are rotated left and right, the raised portion 44 of the handlebars 41 only passes around the airbag module 50 without contacting the airbag module 50. Thereby, the airbag module 50 can be arranged near the handlebar 41 without affecting the operation of the handlebar 41.

Next, the operation of the airbag module 50 will be described. When the acceleration sensor (not shown) of the two-wheeled locomotive 1 detects an acceleration greater than a predetermined value, the control unit (not shown) causes the inflator 51 of the airbag module 50 to operate. Thereby, the inflator 51 generates gas. The gas generated by the inflator 51 is supplied to the airbag 52a in the holder 52. The gas flowing into the airbag 52a inflates the airbag 52a. The inflated airbag 52a opens the opening portion 52b of the retainer 52, and deploys it to the rear of the vehicle, tears the opening portion of the inner case 22, and deploys it to the rear. The airbag 52a deployed rearward at a certain distance is deployed upward afterward as shown in FIG. 2.

After the airbag 52a is deployed rearward and protrudes from the inner casing 22, it is deployed upwards. Therefore, using the inflator 51, the retainer 52 and the inner casing 22 are cracked during a period of high gas pressure, so that The airbag 52a is efficiently deployed backward. Then, it expands upward to protect the occupants. As described above, since the airbag 52a is deployed, the airbag module 50 can be disposed in a limited space in front of the occupant and in a limited space near the upper body of the occupant. In addition, the airbag 52a can be deployed in front of the driver's upper body to protect the head to the upper body of the chest.

As described above, according to an embodiment using the present invention, the airbag module 50 (airbag device) includes an airbag 52a, a holder 52 that houses the airbag 52a, and an inflator that generates a gas that expands the airbag 52a. 51. In addition, the airbag module 50 is fixed to the main frame 30 of the two-wheeled locomotive 1 (vehicle) and is arranged on a stem tube 31 which is inserted into a handle base portion 42 which is connected to the handle lever 41 on the left and right. According to this configuration, the airbag module 50 can be arranged in a restricted space on the stem tube 31. Furthermore, the airbag module 50 can be arranged without changing the layout in appearance. Furthermore, the main frame 30 can be used to withstand the impact during the operation of the airbag module 50 through the stem tube 31. Thereby, when the airbag 52a is deployed, a change in the posture of the airbag module 50 can be reduced. In addition, the airbag module 50 can be arranged in the vertical direction from the head of the occupant to a position near the upper body of the chest. Thereby, the airbag 52a can be tightly configured, and the time required for deployment can be shortened.

An airbag module 50 is disposed between the meter 60 mounted on the handlebar 41 and the stem tube 31. With this configuration, the airbag module 50 can be arranged while maintaining the positional relationship between the handlebar 41 and the meter 60.

Furthermore, when viewed from the side of the two-wheeled locomotive 1 (vehicle), the airbag module 50 is disposed further forward than the left and right end portions 45 a of the handlebar 41. With this configuration, the airbag module 50 can be arranged in front of the occupant and in a position from the head to the upper half of the chest.

An airbag module 50 is disposed between the handle case 23 covering the upper portion of the handle lever 41 and the inner case 22 covering the lower portion of the handle lever 41 from the rear. With this configuration, the airbag module 50 can be arranged without changing the layout of the two-wheeled locomotive 1.

Furthermore, in the above embodiment, the two-wheeled locomotive 1 is used as an example of a saddle-riding type vehicle, but the present invention is not limited thereto. The present invention can be applied to a three-wheeled saddle-type vehicle having two front wheels or rear wheels, A straddle-type vehicle with more than four wheels.

Claims (4)

    An airbag device for a straddle-type vehicle, comprising an airbag (52a), a holder (52) that houses the airbag (52a), and an inflator that generates a gas that expands the airbag (52a). (51) is fixed to a frame (30) of the vehicle and is arranged on a stem tube (31), which is inserted into a handle base (42) that is connected to the handle lever (41) left and right.         For example, the airbag device for a straddle-type vehicle according to claim 1, wherein, when viewed from the side of the vehicle, it is disposed between the instrument (60) mounted on the handlebar (41) and the stem tube (31).         For example, the airbag device of a straddle-type vehicle according to claim 1 or 2, wherein the airbag device is disposed more forward than the left and right ends (45a) of the handlebar (41) when viewed from the side of the vehicle.         The airbag device for a straddle-type vehicle according to any one of claims 1 to 3, which is arranged on a handle housing (23) covering the upper part of the handlebar (41) and covers the lower part of the handlebar (41) from the rear. Between the inner shell (22).