# US 2013/0154335 A1 · Tongue and seat belt device using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0154335 A1 - Document ID: US20130154335A1 - Status: Published application - Kind: A1 - Application number: 13/819,167 - Filed: 2011-09-26 - Published: 2013-06-20 - Earliest claimed: 2010-09-28 - Assignees: Takata Corporation - Inventors: Yuki Tabata; Yoshihiko Kawai - Web page: https://patentgrep.com/patent/US20130154335A1 ## CPC - B60R 22/00: Safety belts or body harnesses in vehicles (safety belts or body harnesses in general A62B35/00) - A44B 11/2561: {Tongue elements} - B60R 22/18: Anchoring devices - B60R 22/34: Belt retractors, e.g. reels (anchoring devices {, e.g. guide loops} , with means to tension the belt in an emergency B60R22/195) - B60R 2022/1812: {Connections between seat belt and buckle tongue} - Y10T 24/45241: Slot and tab or tongue - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - A44B: BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE (fastenings specially adapted for footwear A43C) - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Recess portions (15) and (16) are disposed in a seat-belt sliding face (14) of a seat-belt sliding member (13), and a predetermined number of projections (17) are provided independently of each other in a dotted state in the recess portions (15) and (16). In each of the projections (17), sliding resistance between a seat belt (4) and the seat-belt sliding member (13) in a normal time is small, and the sliding resistance between the seat belt (4) and the seat-belt sliding member (13) when the seat belt (4) slides to the lap belt (4c) side is larger than the sliding resistance between the seat belt (4) and the seat-belt sliding member (13) when the seat belt (4) slides to the shoulder belt (4b) side. By means of the dotted-state projections (17), extension of the lap belt (4c) in an emergency is suppressed. ## Claims ### Claim 1 A tongue which is slidably supported by a seat belt, divides said seat belt into a shoulder belt and a lap belt and is provided capable of being engaged with a buckle, comprising: an elongated belt insertion hole through which said seat belt is inserted; and a seat-belt sliding portion having a seat-belt sliding face which forms a part of said belt insertion hole and on which said seat belt slides, wherein said seat-belt sliding portion has a predetermined number of recess portions disposed in said seat-belt sliding face and a predetermined number of projections disposed independently of each other in a dotted state in said recess portions; each of said projections is provided such that sliding resistance between said seat belt and the seat-belt sliding portion is small in a normal time and the sliding resistance between said seat belt and the seat-belt sliding portion when the seat belt slides to said lap belt side in an emergency is larger than the sliding resistance between said seat belt and the seat-belt sliding portion when said seat belt slides to said shoulder belt side. ### Claim 2 (depends on 1) The tongue according to claim 1, wherein an end face of said projection on said shoulder belt side is a flat or substantially flat face, and an end face of said projection on said lap belt side is an arc or substantially arc curved face. ### Claim 3 (depends on 2) The tongue according to claim 2, wherein the end face on said shoulder belt side of at least a part of said projections is provided so as to be orthogonal or substantially orthogonal to said seat belt, and the end face on said lap belt side of at least a part of said projections is provided so as to be oblique to said seat belt. ### Claim 4 (depends on 1) The tongue according to claim 1, wherein said seat-belt sliding face is provided at least on both end portions in the longitudinal direction of said belt insertion hole. ### Claim 5 (depends on 1) The tongue according to claim 1, wherein all said projections are provided so as not to project from said recess portions beyond said seat-belt sliding face. ### Claim 6 (depends on 1) The tongue according to claim 1, wherein all said recess portions are extended in the same direction as the insertion direction of said belt insertion hole of said seat belt or extended substantially in the same direction as said insertion direction when said seat belt is worn. ### Claim 7 (depends on 6) The tongue according to claim 6, wherein said projections are provided in alignment in the same direction as the extended direction of said recess portions or provided in alignment substantially in the same direction as the extended direction of said recess portions when said seat belt is worn. ### Claim 8 (depends on 1) A seat belt device provided at least with a seat belt, a seat-belt retractor that retracts this seat belt, a tongue slidably supported by said seat belt, and a buckle in which this tongue is inserted and engaged, in which said seat belt is worn by an occupant by inserting and engaging said tongue in said buckle, characterized in that said tongue is formed of the tongue described in claim 1.