CN105829173B - The seat belt apparatus of vehicle - Google Patents
The seat belt apparatus of vehicle Download PDFInfo
- Publication number
- CN105829173B CN105829173B CN201480068610.3A CN201480068610A CN105829173B CN 105829173 B CN105829173 B CN 105829173B CN 201480068610 A CN201480068610 A CN 201480068610A CN 105829173 B CN105829173 B CN 105829173B
- Authority
- CN
- China
- Prior art keywords
- seatbelt
- vehicle
- pretensioner
- vehicle body
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004873 anchoring Methods 0.000 claims abstract description 3
- 230000000630 rising effect Effects 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 230000002452 interceptive effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/18—Anchoring devices
- B60R22/195—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type
- B60R22/1954—Anchoring devices with means to tension the belt in an emergency, e.g. means of the through-anchor or splitted reel type characterised by fluid actuators, e.g. pyrotechnic gas generators
- B60R22/1955—Linear actuators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R22/00—Safety belts or body harnesses in vehicles
- B60R22/18—Anchoring devices
- B60R22/22—Anchoring devices secured to the vehicle floor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
When the impact force action of the predetermined above is when on car body, the safety belt pretensioner (20) for pulling in safety belt (12) is connected to the anchoring section (4) for the floor component (6) for being arranged at car body.
Description
Technical Field
The present invention relates to a vehicle seatbelt apparatus including a seatbelt pretensioner (lap pretensioner), and more particularly, to a mounting structure of a seatbelt pretensioner.
Background
The vehicle includes a seatbelt apparatus for restraining a passenger seated on a seat. A general seatbelt apparatus is a three-point seatbelt apparatus for a front seat, in which a retractor is provided on a pillar member, a front end of a seatbelt drawn out from the retractor is fixed to an anchor portion provided at a lower portion of the pillar member, for example, and a tongue provided at a middle position of the seatbelt is inserted and connected to a buckle beside the seat to restrain a waist of a passenger with a lap belt portion and to restrain a shoulder of the passenger with a shoulder belt portion.
In recent years, in order to further improve safety, it has been known that a device called a seatbelt pretensioner is provided between an anchor portion and a front end of a seatbelt in a seatbelt device.
A seat belt pretensioner is a device that, when an impact force of a predetermined magnitude or more is applied, pulls in a seat belt from a front end side thereof to further restrain a passenger sitting in a seat. Specifically, a seat belt pretensioner generally includes: a cylinder having a gas generating agent such as gunpowder, an ignition portion, and a piston; and a relay part connected to the piston at one end of the cylinder. One end of the cylinder is fixed, and the tip of the relay member is connected to the tip of the seat belt, so that the piston displacement occurring when gas is generated in the cylinder is transmitted to the seat belt, thereby drawing in the seat belt (patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent application laid-open No.2004-359028
Disclosure of Invention
Problems to be solved by the invention
Since the beam member provided at the lower portion of the pillar member has high rigidity, the anchor portion fixing the front end of the seatbelt is generally on the beam member, and as pointed out in patent document 1, the seatbelt pretensioner is also fixed to the beam member.
However, many vehicles, such as pick-up trucks including a vehicle body structure having a frame at a lower portion of the vehicle body, do not have a beam member, and in this case, the problem is the fixing position of the seatbelt pretensioner.
The present invention has been made to solve such problems, and an object of the present invention is to provide a seatbelt apparatus of a vehicle capable of reliably fixing a seatbelt pretensioner to a vehicle body even if the vehicle does not include a beam member.
Means for solving the problems
A first aspect of a vehicle seat belt device of the present invention includes: an anchor portion provided on a floor member of a vehicle body; and a seatbelt pretensioner that is connected to the anchor portion and is coupled to a front end of a seatbelt, and that pulls in the seatbelt when an impact force above a predetermined level is applied to the vehicle body.
With a second aspect of the present invention, in the first aspect, the anchor portion includes a mounting bracket that is connected to the floor member and has a rising face, and the seatbelt pretensioner is connected to the rising face of the mounting bracket.
With a third aspect of the invention, in the first or second aspect, the anchor portion is provided in the vicinity of a pillar member of the vehicle body on the floor member.
With a fourth aspect of the invention, in the third aspect, the seatbelt pretensioner includes: a cylinder housing a piston; a wire member having one end connected to the piston and the other end connected to the front end of the webbing; an actuating member that activates the piston to pull the wire member into the cylinder when an impact force of a predetermined or more is applied to the vehicle body; and a fixing portion provided at an end portion of the cylinder on the wire member side, wherein the cylinder has an orientation extending along the pillar member, and the fixing portion is bonded to the anchor portion.
Advantageous effects of the invention
According to the first aspect of the vehicular seatbelt apparatus of the invention, the seatbelt pretensioner that pulls in the seatbelt is attached to the anchor portion provided on the floor member of the vehicle body, which makes it possible to reliably fix the seatbelt pretensioner even for a vehicle body that does not include a beam member.
According to the second aspect of the invention, the seatbelt pretensioner is attached to the rising face of the mounting bracket that is attached to the floor member and has the rising face, which makes it possible to freely fix the seatbelt pretensioner to the floor member via the mounting bracket.
According to the third aspect of the invention, the anchor portion is provided in the vicinity of the pillar member of the vehicle body on the floor member, which prevents the seatbelt pretensioner from interfering with the passenger when the passenger enters or exits the vehicle.
According to a fourth aspect of the present invention, in the seatbelt pretensioner including the cylinder, the cylinder has an orientation extending along the pillar member so as to connect the fixing portion of the seatbelt pretensioner to the anchor portion, which prevents the cylinder of the seatbelt pretensioner from interfering with the occupant when the occupant enters or exits the vehicle.
Drawings
Fig. 1 is a perspective view of a mounting structure of a seatbelt pretensioner in a seatbelt apparatus of a vehicle according to the present invention.
Fig. 2 is a longitudinal sectional view taken along line a-a in fig. 1.
List of reference marks
2 middle post (column parts)
6 floor (floor component)
8 reinforcing part
10 retractor
12 safety belt
20 safety belt pretensioner
22 cylinder
26 frame part (fixed part)
27 fixed hole
40 mounting bracket of safety belt pretensioner (anchoring part)
Detailed Description
Now, an embodiment of a seatbelt apparatus for a vehicle according to the present invention will be described with reference to fig. 1 and 2.
For example, the vehicle to which the seatbelt apparatus of the vehicle according to the present invention is applied is a pick-up truck including a frame including a front seat and a rear seat at a lower portion of a vehicle body, and including a front door and a rear door on respective sides of the vehicle body, with a center pillar located between the front door and the rear door.
Fig. 1 is a perspective view of a mounting structure of a main portion of a three-point seatbelt apparatus of a front seat provided in a vehicle, that is, a retractor 10 and a seatbelt pretensioner 20 provided at a lower portion of a center pillar (pillar member) 2 as a vehicle body member. The trim member covering the vehicle body member is omitted here for convenience.
As shown in fig. 1, the center pillar 2 includes a center pillar outer 2a and a center pillar inner 2b welded together, and a retractor 10 is accommodated in the center pillar 2 from a lower opening 3 of the center pillar inner 2b and fixed to the center pillar inner 2b by bolts 4, 5.
The retractor 10 and the seatbelt pretensioner 20 are linked by the seatbelt 12, which enables the seatbelt 12 to restrain a passenger seated in a front seat to the front seat. The details of the basic functions of the seatbelt apparatus of the vehicle and the construction of the retractor 10 are known, and the description thereof will be omitted herein.
The vehicle includes a frame at a lower portion of a vehicle body and thus does not include a beam member at a lower portion of a side of the vehicle body, and as shown in fig. 1, a center pillar 2 is welded directly to a floor panel (floor member) 6 at a lower end thereof. Thus, for a vehicle body that does not include a beam member, the seatbelt pretensioner 20 cannot be fixed to the beam member having high rigidity as conventionally.
Thus, in the seatbelt apparatus of the vehicle according to the present invention, the seatbelt pretensioner 20 is fixed to the floor panel 6. Now, the construction of the seatbelt pretensioner 20 and the mounting structure of the seatbelt pretensioner 20 to the floor panel 6 will be described.
The seatbelt pretensioner 20 is configured as a kind of explosion type device that is activated to pull in the seatbelt 12 from the front end side thereof when a predetermined or more impact force is applied.
Specifically, the seatbelt pretensioner 20 includes: an elongated cylinder 22; a piston and a gas generating agent (actuating member) such as gunpowder (both not shown) accommodated in the cylinder 22; an ignition portion (actuating member) 24 that ignites the gas generating agent; a plate-like frame portion (fixing portion) 26 provided to project forward from one end of the cylinder 22 and having a fixing hole 27 at the center (see fig. 2); a wire insertion channel 28 formed around substantially half of the fixing hole 27 in the frame portion 26; and a wire member 30 displaceably inserted through the wire insertion channel 28. One end of the wire member 30 is coupled to the piston in the cylinder 22, and the other end of the wire member 30 is connected to the front end of the seat belt 12 via a belt connector 32. The wire member 30 and the strap connector 32 are covered by a cover member 34.
A seatbelt pretensioner mounting bracket (hereinafter simply referred to as a mounting bracket) 40 located near the center pillar 2 to mount the seatbelt pretensioner 20 to the floor panel 6 is connected to the floor panel 6 by a bolt 50. Thus, the anchor portion is configured to include the mounting bracket 40 that fixes the seatbelt pretensioner 20 to the floor 6.
As shown in fig. 2, the mounting bracket 40 is bent in an L-shape, and includes a bottom surface 41 having an outer surface abutting against the floor panel 6 and a rising surface 42 having an outer surface facing the center pillar 2. The mounting bracket 40 is configured such that the bottom surface 41 has a hat-shaped cross section and has a recess 43 bored with a through hole 44 at the center, and the rising surface 42 has a through hole 45 at the center thereof for attaching the seatbelt pretensioner 20, and the rising surface 42 has a weld nut 46 on the outer surface around the through hole 45.
As shown in fig. 2, a through hole 7 is drilled in the floor panel 6, and a reinforcement portion 8 thicker than the floor panel 6 is welded as a reinforcement member to the rear surface of the floor panel 6 such that a through hole 9 is aligned with the through hole 7. Then, the weld nut 9a is disposed around the through hole 9 in the reinforcing portion 8.
Thus, the mounting bracket 40 is connected to the floor panel 6 with the bolts 50 screwed into the weld nuts 9a through the through holes 44 and the through holes 7, 9.
In the seatbelt pretensioner 20 configured as described above, the cylinder 22 is disposed along the center pillar 2 substantially perpendicularly to the floor 6, and the wire member 30 led out from the end of the wire insertion passage 28 has a direction extending toward the front and obliquely upward of the vehicle. The bolt 60 is screwed into the weld nut 46 through the fixing hole 27 in the frame portion 26, the spacer 62, and the through hole 45 in the mounting bracket 40, and the seatbelt pretensioner 20 is attached to the mounting bracket 40 with the bolt 60.
In this way, even for a vehicle body that does not include a beam member, the seatbelt pretensioner 20 is firmly fastened to the floor panel 6 via the mounting bracket 40.
Thus, even if the seatbelt pretensioner 20 is fixed to the floor panel 6, when an impact force of a predetermined amount or more is applied to the vehicle body due to a collision or the like, the seatbelt pretensioner 20 causes the cylinder 22 to generate gas, and the expansion of the gas displaces the piston. The displacement of the piston is transmitted to the seat belt 12 via the wire member 30 and the belt connector 32 to pull in the seat belt 12. Thus, the passenger sitting on the front seat is restrained to the front seat by the seat belt 12.
As described above, according to the seatbelt apparatus of the vehicle of the present invention, the seatbelt pretensioner 20 is fixed to the floor panel 6 via the mounting bracket 40, so that the seatbelt pretensioner 20 can be reliably fixed even to the vehicle body that does not include the beam member.
In particular, the anchor portion includes a mounting bracket 40 so that the seatbelt pretensioner 20 can be freely fixed to the mounting bracket 6 in a desired orientation via the mounting bracket 40.
In this case, the mounting bracket 40 is located near the center pillar 2 and connected to the floor panel 6, and the cylinder 22 of the seatbelt pretensioner 20 is disposed along the center pillar 2 substantially perpendicular to the floor panel 6. This prevents the cylinder 22 and the seatbelt pretensioner 20 from interfering with the passenger as the passenger enters and exits the vehicle.
The present invention is not limited to the above-described embodiments, and various modifications may be made without departing from the gist of the present invention.
For example, in the above-described embodiment, the three-point seatbelt apparatus of the front seat has been taken as an example, but the seatbelt apparatus is not limited to the apparatus of the front seat, but may be an apparatus of the rear seat. Further, the seatbelt apparatus is not limited to the three-point seatbelt apparatus, and may be a two-point seatbelt apparatus or a four-point seatbelt apparatus.
In this embodiment, a pick-up truck including a front seat and a rear seat has been taken as an example, but is not limited thereto. For example, a vehicle having a retractor 10 housed in a rear pillar without a rear seat may be applied as long as the vehicle does not include a beam member. Even in this case, as described above, the seatbelt pretensioner 20 is fixed to the floor in the vicinity of the rear pillar, thereby achieving the same advantages as described above.
Claims (4)
1. A seatbelt apparatus of a vehicle, comprising:
an anchor portion provided on a floor member of a vehicle body; and
a seatbelt pretensioner that is connected to the anchor portion and is coupled to a front end of a seatbelt, and that pulls in the seatbelt when an impact force above a predetermined level is applied to the vehicle body,
wherein,
the anchor portion including a mounting bracket connected to the floor member,
the mounting bracket is bent in an L-shape, includes a bottom surface having an outer surface abutting against the floor member and a rising surface having an outer surface facing the center pillar, and
the seat belt pretensioner is attached to the rising face of the mounting bracket, and the floor member is attached to the bottom face.
2. The vehicle seatbelt apparatus according to claim 1, wherein the bottom surface integrally has a hat-shaped cross section.
3. The vehicular seatbelt apparatus according to claim 1 or 2, wherein the anchor portion is provided in the vicinity of a pillar member of the vehicle body on the floor member.
4. The seat belt device of the vehicle according to claim 3, wherein the seat belt pretensioner includes: a cylinder housing a piston; a wire member having one end coupled to the piston and the other end coupled to the front end of the webbing; an actuating member that activates the piston to pull the wire member into the cylinder when an impact force of a predetermined or more is applied to the vehicle body; and a fixing portion provided at an end portion of the cylinder on the wire member side,
wherein the cylinder has an orientation extending along the column part, and the fixing portion is connected to the anchoring portion.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-259311 | 2013-12-16 | ||
| JP2013259311A JP6238001B2 (en) | 2013-12-16 | 2013-12-16 | Vehicle seat belt device |
| PCT/JP2014/080643 WO2015093220A1 (en) | 2013-12-16 | 2014-11-19 | Vehicle seatbelt device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105829173A CN105829173A (en) | 2016-08-03 |
| CN105829173B true CN105829173B (en) | 2018-02-13 |
Family
ID=53402575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480068610.3A Active CN105829173B (en) | 2013-12-16 | 2014-11-19 | The seat belt apparatus of vehicle |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6238001B2 (en) |
| CN (1) | CN105829173B (en) |
| BR (1) | BR112016013736B1 (en) |
| WO (1) | WO2015093220A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6690222B2 (en) * | 2015-12-17 | 2020-04-28 | 三菱自動車工業株式会社 | Lap pretensioner fixing structure |
| CN109131203B (en) * | 2017-06-13 | 2019-11-15 | 本田技研工业(中国)投资有限公司 | A kind of seat belt apparatus of automotive seat |
| JP6807417B2 (en) * | 2019-02-08 | 2021-01-06 | 本田技研工業株式会社 | Body mounting structure of lap pretensioner |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5325942Y2 (en) * | 1973-12-07 | 1978-07-03 | ||
| DE3215926C2 (en) * | 1982-04-29 | 1985-09-19 | Bayern-Chemie Gesellschaft für flugchemische Antriebe mbH, 8261 Aschau | Winding device with back tensioner for seat belts in vehicles |
| JPH06107124A (en) * | 1992-09-28 | 1994-04-19 | Mazda Motor Corp | Seat belt arrangement structure of vehicle |
| US5924730A (en) * | 1998-02-17 | 1999-07-20 | Breed Automotive Technology, Inc. | Pretensioning buckle |
| US6109697A (en) * | 1998-02-20 | 2000-08-29 | Breed Automotive Technology, Inc. | Compact belt tightener |
| JP4596302B2 (en) * | 2001-07-04 | 2010-12-08 | マツダ株式会社 | Vehicle seat belt structure |
| JP2005081886A (en) * | 2003-09-05 | 2005-03-31 | Suzuki Motor Corp | Seat belt apparatus |
| US7281755B2 (en) * | 2004-12-07 | 2007-10-16 | Nissan Technical Center North America, Inc. | Vehicle support structure with floor impact movement restriction device |
| JP4771211B2 (en) * | 2005-08-05 | 2011-09-14 | スズキ株式会社 | Seat belt device mounting structure with pretensioner mechanism |
| JP2010000913A (en) * | 2008-06-20 | 2010-01-07 | Mazda Motor Corp | Seat belt mounting structure of vehicle |
-
2013
- 2013-12-16 JP JP2013259311A patent/JP6238001B2/en active Active
-
2014
- 2014-11-19 BR BR112016013736-1A patent/BR112016013736B1/en active IP Right Grant
- 2014-11-19 WO PCT/JP2014/080643 patent/WO2015093220A1/en active Application Filing
- 2014-11-19 CN CN201480068610.3A patent/CN105829173B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6238001B2 (en) | 2017-11-29 |
| CN105829173A (en) | 2016-08-03 |
| BR112016013736A2 (en) | 2017-08-08 |
| JP2015116834A (en) | 2015-06-25 |
| WO2015093220A1 (en) | 2015-06-25 |
| BR112016013736B1 (en) | 2021-09-28 |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No. 21, No. 3, Dingmu, No. 1, Toshiba, Tokyo, Japan Patentee after: Mitsubishi Jidosha Kogyo Kabushiki Kaisha Address before: Tokyo, Japan Patentee before: Mitsubishi Jidosha Kogyo Kabushiki Kaisha |
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| CP02 | Change in the address of a patent holder |