WO2004050436A1 - Occupant restraint system with seat belt having a novel sash guide and anchor plate - Google Patents
Occupant restraint system with seat belt having a novel sash guide and anchor plate Download PDFInfo
- Publication number
- WO2004050436A1 WO2004050436A1 PCT/IN2003/000373 IN0300373W WO2004050436A1 WO 2004050436 A1 WO2004050436 A1 WO 2004050436A1 IN 0300373 W IN0300373 W IN 0300373W WO 2004050436 A1 WO2004050436 A1 WO 2004050436A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- webbing
- sash guide
- anchor plate
- seat belt
- hardened steel
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
-
- 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
- B60R22/24—Anchoring devices secured to the side, door, or roof of the vehicle
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
Definitions
- the present invention generally relates to an occupant restraint system with a seat belt.
- the present invention particularly relates to a seat belt device with a double layered sash guide and an anchor plate of reduced thickness.
- the seat belt assembly is a critical safety item because in the event of collision, the seat belt assembly should restrain the occupant. In addition, it should be able to absorb and withstand the force of impact, without any major deformation or failure.
- a secured seatbelt in motor vehicle prevents the occupant from hitting the windshield or steering wheel, greatly reducing the potential for fatal and/or severe injuries.
- Seat belts are equipped with webbing, designed to stretch to a desired level to restrain the occupant of the seat, on sudden impact of a vehicle.
- the inertia locking mechanism of the retractor of a seat belt assembly locks the webbing if the webbing is pulled out suddenly.
- the webbing of a seat belt is designed to elongate when loaded so that the vehicle impact is translated to the restraint wearer at lower loads and over a longer period of time.
- the sash guide is provided on the inner body of a vehicle in proximity to the seat assembly to facilitate the passage of webbing through the sash guide and further to permit the webbing to pivot freely.
- a conventional seat belt comprises a sash guide that is made of hardened medium carbon steel of about 3mm thick material.
- the major problem with regard to the sash guide is poor consistency after the heat treatment, wherein the process of heat treatment is a critical step in its development.
- a conventional seat belt also comprises an anchor plate with low carbon steel with 4 mm thickness to provide optimum load bearing capacity.
- the existing sash guide material is hardened medium carbon steel sheet metal subjected to heat treatment to about 42-45 HRC (Rockwell Hardness Scale C) to accomplish tensile load requirement.
- HRC Rockwell Hardness Scale C
- the process of heat treatment is cumbersome and time consuming.
- the component will have to be tempered over and again until the required product is obtained.
- the value of HRC is decreased the product starts yielding much before the yield point resulting again in the failure of the product.
- starting materials used for manufacturing the sash guide and anchor plate of the present invention is selected from non-hardened material steel on reduced thickness without compromising the tensile strength of the product.
- the primary object of the present invention is to provide a seat belt device as an occupant restraint system comprising a double layered sash guide and an anchor plate of reduced thickness.
- An object of the present invention is to provide a sash guide of reduced thickness starting material but retaining the optimum tensile strength and load characteristics.
- Another object of the present invention is to provide an anchor plate that can withstand a high tensile load while in operation even when using a starting material of reduced thickness.
- Yet another object of the present invention is to provide sash guide and anchor plate, which are non-heat treated.
- Still another object of the present invention is to develop a cost effective sash guide and anchor plate.
- the present invention provides a seat belt device comprising a double layered sash guide having non-hardened steel as a starting material and an anchor plate of reduced thickness.
- the present invention also provides a sash guide with reduced thickness but retaining the optimum tensile strength and load characteristics by incorporating bolt and webbing slot embossing.
- the anchor plate of the present invention can withstand a high tensile load while in operation even while using a starting material of reduced thickness.
- the sash guide and anchor plate of the present invention are non-hardened wherein no heat treatment process is adopted.
- Fig 1 depicts an exploded view of the sash guide assembly.
- Fig la depicts a complete seat belt assembly
- Fig 2 is an exploded view of the anchor plate assembly.
- Fig 3 depicts side and front views of a double layered sash guide having primary and secondary base plates.
- Fig 4 provides both front and side views of the sash guide to depict double layered sash guide and further to show embossed webbing and bolt slots.
- Fig 5 provides both front and side view of an anchor plate of reduced thickness with embossed bolt and webbing slots.
- a seat belt device generally comprises a retractor to provide an 'inertia' locking mechanism, by locking the seat belt in the event of sudden impact.
- seat belts are made using webbing 2 designed to elongate to provide restraint to the wearer of seat belts at lower loads and over a longer period of time.
- the sash guide 1 facilitates the webbing 2 to pivot freely and is fastened to the vehicle structure.
- the tongue and buckle assemblies are used to latch the occupant safely every time the seat belt is used.
- the seat belts are designed to bear upon the skeletal structure of the body, and worn across the front of pelvis, chest and shoulders.
- An anchor plate 9 is disposed in the proximity with the retractor to receive webbing. The webbing 2 as received from the sash guide 1 and the anchor plate 9 culminates in a tongue for easy fitment into a buckle whenever the seat belt is used by a user.
- the present invention provides a seat belt assembly comprising a sash guide and an anchor plate for restraining occupants in automobiles on sudden impact.
- a sash guide 1 is normally positioned at or near the roof or supporting pillar positioned just rearward of the occupants.
- the webbing of the seatbelt 2 is fed through this sash guide 1 from the retractor (not shown in these figures) to the seat belt's tongue (not shown in this figure) and to the anchor plate 9 which will be fastened to the lower part of pillar or floor of the vehicle body and tongue in turn locked to the buckle (not shown in this figure) which is mounted other side of the seat belt system.
- This routing of belt called 3 -point seat belt which restrain the shoulder and lap portion of the occupant.
- This sash guide 1 is used to both to properly position the shoulder belt across the occupant and to guide the passage of the belt during extraction and retraction.
- the double layered sash guide 1 is mounted on a bolt 4 by means of an embossed bolt slot 15 to pivot freely.
- the bolt 4 is suspended to the lateral inner surface of a vehicle in proximity to the upper area of the seatbelt assembly.
- the sash guide having a secondary base plate 10 is sheared out of a sheet made of non-hardened steel, preferably a micro alloy steel of reduced thickness of about 2-2.5 mm.
- a slot 11 is carved out on the secondary base plate 10 to permit an unhindered passage of the webbing 2 drawn from the retractor assembly (not shown in this Figure).
- a primary base plate 12 is sheared out of a sheet made of non-hardened steel, preferably a micro alloy steel of thickness of about 2-2.5 mm and a webbing slot 13, which is embossed, is formed in the webbing region of the primary base plate 12 similar to that of secondary base plate 10.
- the primary base plate 12 is curled at one end to act as a locking means for the secondary base plate 10 which is molded on to the primary base plate 12.
- the secondary base plate 10 mounted on the primary base plate 12 forms an additional layer in surrounding region of webbing slot 13 to provide an additional tensile strength to the sash guide.
- a plastic over molding 19 (Fig 4) is done in the web slots 11 & 13 regions to provide abrasion free and smooth flow of webbing through the sash guide.
- the primary base plate 12 is further extended to provide an area for an embossed bolt slot 15 (Fig 3), which provides a passage for the bolt 4 to pass through.
- the embossing of the bolt slot 15 is done on the side of contact with bolt 4 to withstand the tear strength acting on the sash guide 1 while in use.
- an anti rattle bush 5 having a circular passage and is peripherally disposed in the bolt slot 15 through which the bolt 4 passes and further to provide a swiveling effect to the sash guide 1, when the sash guide 1 is in use.
- a spacer 6 is disposed on the opposite side of the bolt slot 15 along with a set of spring washer 7 and transport washers 8 to provide a fitting arrangement of the sash guide 1 with- that of bolt 4.
- a sash guide cap 3 is disposed on the side of the bolt head to cover the bolt 4 by means of a pair of slots 14.
- the sash guide 1 of the present invention is developed by subjecting a metal sheet selected from low carbon micro alloyed steel of reduced thickness of about 2.5 mm to shearing for converting the metal sheet into desired dimensions to form a secondary base plate 10 for the sash guide 1. Further, a webbing slot 11 is pierced on the secondary base plate 10.
- a primary base plate 12 is sheared to the desired shape and dimensions from a metal sheet having low carbon alloyed steel of reduced thickness of about 2 to 2.5 mm and a corresponding embossed webbing slot 13 is extruded.
- An embossed bolt hole 15 is extruded to permit the passage of bolt 4 for fitment to the structure of a vehicle.
- the secondary base plate 10 is mounted on the primary base plate 12 and locked by means of curvature 17 and bent 18 to avoid webbing of the seat belt rubbing against the body of the vehicle and molded together to form a double layered webbing area in the region of webbing slots 11 and 13.
- the molded primary and secondary base plates 10 and 12 are further over molded with a plastic material in the area of webbing slots 11 and 13. Further ear shaped grooves 28 are provided on either ends of the webbing slots to provide an unhindered flow of the webbing of the seat belt.
- the webbing of the seat belt 2 is allowed to pass through the webbing slot of the sash guide 1 (not shown in this figure) and the webbing is further extended to the assembly where an anchor plate 9 is mounted on the bolt 23.
- the anchor plate is manufactured from a starting material of non- hardened steel of thickness of about 2-2.5mm.
- An embossed bolt slot 20 is disposed on one end of the anchor plate 9 and an embossed webbing slot 21 is disposed on the other end and the anchor plate is suitably bent 22 to provide an unobstructed webbing path.
- the anchor plate 9 further having a pair of embossed slots 20 and 21 one each for allowing the passage of bolt 23 to pass through and the other for receiving the webbing 2 from sash guide 1.
- An anti rattle bush 24 having a circular passage and is peripherally disposed in the bolt slot 20 through which the bolt 23 passes and further to provide a swiveling effect to the anchor plate 9, while the anchor plate 9 is in use.
- a spacer 25 is disposed on the other side of the bolt slot 20 along with a set of a spring washer 26 and a transport washer 27 to provide a fitting arrangement of the anchor plate 9 with bolt 23.
- Example 1 A Sash Guide with a material composition (non-hardened micro alloyed steel) as provided in the below table are tried and the properties thus achieved are tabulated.
- the sash guide can also be made of above-stated non- hardened plain carbon steel as provided in Example 2.
- the sash guide and anchor plate of the present invention are free from heat treatment.
- Consistency of the tensile load is achieved for the sash guide and anchor plate.
- the raw material used for the sash guide and anchor plate is cheaper.
- the sash guide and anchor plate of the present invention meets the test requirements of International Regulation Standards.
- the thickness of the anchor plate of the present invention is lesser than the conventional anchor plates.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Automotive Seat Belt Assembly (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003300697A AU2003300697A1 (en) | 2002-11-29 | 2003-11-28 | Occupant restraint system with seat belt having a novel sash guide and anchor plate |
KR1020057009759A KR101059488B1 (en) | 2002-11-29 | 2003-11-28 | Passenger restraint with seat belt with new chassis guide and anchor plate |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN669/CAL/02 | 2002-11-29 | ||
IN669KO2002 | 2002-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004050436A1 true WO2004050436A1 (en) | 2004-06-17 |
Family
ID=32448835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IN2003/000373 WO2004050436A1 (en) | 2002-11-29 | 2003-11-28 | Occupant restraint system with seat belt having a novel sash guide and anchor plate |
Country Status (5)
Country | Link |
---|---|
KR (1) | KR101059488B1 (en) |
CN (1) | CN100396520C (en) |
AU (1) | AU2003300697A1 (en) |
WO (1) | WO2004050436A1 (en) |
ZA (1) | ZA200505212B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1754638A1 (en) * | 2005-08-19 | 2007-02-21 | Takata Corporation | Seat-belt guide anchor and seat belt apparatus having the same |
JPWO2015092891A1 (en) * | 2013-12-18 | 2017-03-16 | 株式会社遠州 | Through anchor |
US11377067B2 (en) * | 2018-07-20 | 2022-07-05 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Bush |
CN115461251A (en) * | 2020-03-04 | 2022-12-09 | 金土日产业股份有限公司 | Anchor for a motor vehicle and method for producing the same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100549410B1 (en) * | 2004-07-29 | 2006-02-08 | 델파이코리아 주식회사 | A guide anchor for seat belt of vehicle |
JP6272253B2 (en) * | 2015-02-12 | 2018-01-31 | 株式会社東海理化電機製作所 | Anchor for seat belt device |
CN112824162A (en) * | 2019-11-20 | 2021-05-21 | 奥托立夫开发公司 | Safety belt assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10052920C1 (en) * | 2000-10-25 | 2002-03-14 | Autoliv Dev | Fixing end plate for automobile seatbelt formed from flat metal stamping bent through 180 degrees to provide double layer |
DE10051014C1 (en) * | 2000-10-14 | 2002-05-08 | Autoliv Dev | Fixing device, for passenger seatbelt loop, has rectangular socket fitted through trapezoidal opening in seatbelt loop for allowing pivot movement of latter |
DE10131859C1 (en) * | 2001-06-30 | 2002-11-21 | Autoliv Dev | Fixing lug, for securing passenger seatbelt in automobile, is formed from stamped out metal component bent over to bring slots for seatbelt loop and openings for anchoring bolt into alignment |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5257820A (en) * | 1990-05-16 | 1993-11-02 | Takata Corporation | Slip anchor for seat belt |
JP4142201B2 (en) * | 1999-04-28 | 2008-09-03 | 株式会社東海理化電機製作所 | Through anchor |
-
2003
- 2003-11-28 KR KR1020057009759A patent/KR101059488B1/en not_active IP Right Cessation
- 2003-11-28 AU AU2003300697A patent/AU2003300697A1/en not_active Abandoned
- 2003-11-28 WO PCT/IN2003/000373 patent/WO2004050436A1/en not_active Application Discontinuation
- 2003-11-28 CN CNB2003801084466A patent/CN100396520C/en not_active Expired - Fee Related
-
2005
- 2005-06-28 ZA ZA200505212A patent/ZA200505212B/en unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10051014C1 (en) * | 2000-10-14 | 2002-05-08 | Autoliv Dev | Fixing device, for passenger seatbelt loop, has rectangular socket fitted through trapezoidal opening in seatbelt loop for allowing pivot movement of latter |
DE10052920C1 (en) * | 2000-10-25 | 2002-03-14 | Autoliv Dev | Fixing end plate for automobile seatbelt formed from flat metal stamping bent through 180 degrees to provide double layer |
DE10131859C1 (en) * | 2001-06-30 | 2002-11-21 | Autoliv Dev | Fixing lug, for securing passenger seatbelt in automobile, is formed from stamped out metal component bent over to bring slots for seatbelt loop and openings for anchoring bolt into alignment |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1754638A1 (en) * | 2005-08-19 | 2007-02-21 | Takata Corporation | Seat-belt guide anchor and seat belt apparatus having the same |
JPWO2015092891A1 (en) * | 2013-12-18 | 2017-03-16 | 株式会社遠州 | Through anchor |
US11377067B2 (en) * | 2018-07-20 | 2022-07-05 | Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho | Bush |
CN115461251A (en) * | 2020-03-04 | 2022-12-09 | 金土日产业股份有限公司 | Anchor for a motor vehicle and method for producing the same |
Also Published As
Publication number | Publication date |
---|---|
ZA200505212B (en) | 2006-09-27 |
KR101059488B1 (en) | 2011-08-25 |
KR20050085220A (en) | 2005-08-29 |
CN1735527A (en) | 2006-02-15 |
CN100396520C (en) | 2008-06-25 |
AU2003300697A1 (en) | 2004-06-23 |
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