# US 2019/0168825 A1 · Vehicle body structure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0168825 A1 - Document ID: US20190168825A1 - Status: Published application - Kind: A1 - Application number: 16/199,065 - Filed: 2018-11-23 - Published: 2019-06-06 - Earliest claimed: 2017-12-01 - Assignees: Mazda Motor Corporation - Applicants: Mazda Motor Corporation - Inventors: Yuji Miyoshi; Tomoya Yoshida; Masanobu Kobashi; Junichi Tanaka - Web page: https://patentgrep.com/patent/US20190168825A1 ## CPC - B62D 27/026: {Connections by glue bonding (in general F16B11/00; processes C09J5/00)} - B62D 21/03: transverse members providing body support - B62D 25/20: Floors or bottom sub-units {(sub-frames for mounting engine or suspensions B62D21/11; drip trays F16N31/006)} - B62D 27/04: resilient - C09J 9/00: Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) - B62D: MOTOR VEHICLES; TRAILERS (steering, or guiding on a desired track, of agricultural machines or implements A01B69/00; wheels, castors, axles, increasing wheel adhesion B60B; vehicle tyres, tyre inflation or tyre changing B60C; connections between vehicles of a train or the like B60D; vehicles for use on rail and road, amphibious or convertible vehicles B60F; suspension arrangements B60G; heating, cooling, ventilating or other air treating devices B60H; windows, windscreens, non-fixed roofs, doors or similar devices, protective coverings for vehicles not in use B60J; propulsion plant arrangements, auxiliary drives, transmissions, controls, instrumentation or dashboards B60K; electric equipment or propulsion of electrically-propelled vehicles B60L; power supply for electrically-propelled vehicles B60M; passenger accommodation not otherwise provided for B60N; adaptations for load transportation or to carry special loads or objects B60P; arrangement of signalling or lighting devices, the mounting or supporting thereof or circuits therefor, for vehicles in general B60Q; vehicles, vehicle fittings or vehicle parts not otherwise provided for B60R; servicing, cleaning, repairing, supporting, lifting, or manoeuvring, not otherwise provided for, B60S; brake arrangements, brake control systems or parts thereof B60T; air-cushion vehicles B60V; motor-cycles, accessories therefor B62J, B62K; testing of vehicles G01M) - C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H) ## Abstract A body structure of a vehicle satisfy at least one of the following (A), (B), and (C): (A) an adhesive amount per unit area of a first adhesive in a crossing part is smaller than an adhesive amount per unit area of the first adhesive in an adjacent part; (B) an adhesive amount per unit area of a panel adhesive in a panel crossing part is smaller than an adhesive amount per unit area of the panel adhesive in a panel adjacent part; and (C) an adhesive amount per unit area of a second adhesive in a second joining part crossing part is smaller than an adhesive amount per unit area of the second adhesive in a second joining part adjacent part. ## Claims ### Claim 1 A vehicle body structure, comprising: a panel member forming a body; a first rigid member joined to one face of the panel member via a first joining part and/or an additional panel member joined to the one face of the panel member via a panel joining part; and a second rigid member joined to another face of the panel member via a second joining part, wherein the first joining part includes a first adhesive, with damping performance, that adheres to, and joins together, both the first rigid member and the panel member, the panel joining part includes a panel adhesive, with damping performance, that adheres to, and joins together, both the panel member and the additional panel member, the second joining part includes a second adhesive, with damping performance, that adheres to, and joins together, both the second rigid member and the panel member, the first joining part includes a crossing part that overlaps with the second joining part and an adjacent part that is adjacent to the crossing part and does not overlap with the second joining part, the panel joining part includes a panel crossing part that overlaps with the second joining part and a panel adjacent part that is adjacent to the panel crossing part and does not overlap with the second joining part, the second joining part includes a second joining part crossing part that overlaps with the first joining part and a second joining part adjacent part that is adjacent to the second joining part crossing part and does not overlap with the first joining part, at least one of the following (A), (B), and (C) is satisfied: (A) an adhesive amount per unit area of the first adhesive in the crossing part is smaller than an adhesive amount per unit area of the first adhesive in the adjacent part; (B) an adhesive amount per unit area of the panel adhesive in the panel crossing part is smaller than an adhesive amount per unit area of the panel adhesive in the panel adjacent part; and (C) an adhesive amount per unit area of the second adhesive in the second joining part crossing part is smaller than an adhesive amount per unit area of the second adhesive in the second joining part adjacent part. ### Claim 2 (depends on 1) The vehicle body structure of claim 1, wherein the first adhesive, the panel adhesive, and the second adhesive have characteristics with a storage elastic modulus of within a range of 100 MPa to 800 MPa and a loss factor of 0.2 or more under conditions with a temperature of 20° C. and an exciting force frequency of 60 Hz. ### Claim 3 (depends on 2) The vehicle body structure of claim 2, wherein the first adhesive, the panel adhesive, and the second adhesive have characteristics with a storage elastic modulus of within a range of 500 MPa to 600 MPa and a loss factor of 0.3 or more under conditions with a temperature of 20° C. and an exciting force frequency of 60 Hz. ### Claim 4 (depends on 1) The vehicle body structure of claim 1, wherein the first rigid member is a long member, the first joining part is formed so as to extend in a longitudinal direction of the first rigid member, the adhesive amount per unit area of the first adhesive in the crossing part is smaller than the adhesive amount per unit area of the first adhesive in the adjacent part, and the first adhesive is placed continuously along an extension direction of the first joining part in parts other than the crossing part. ### Claim 5 (depends on 1) The vehicle body structure of claim 1, wherein the panel member and the additional panel member are joined to each other at respective end parts thereof, the panel joining part is formed so as to extend along the end part of the panel member and the end part of the additional panel member, the adhesive amount per unit area of the panel adhesive in the panel crossing part is smaller than the adhesive amount per unit area of the panel adhesive in the panel adjacent part, and the panel adhesive is placed continuously along an extension direction of the panel joining part in parts other than the panel crossing part. ### Claim 6 (depends on 1) The vehicle body structure of claim 1, wherein the second rigid member is a long member, the second joining part is formed so as to extend in a longitudinal direction of the second rigid member, the adhesive amount per unit area of the second adhesive in the second joining part crossing part is smaller than the adhesive amount per unit area of the second adhesive in the second joining part crossing part, and the second adhesive is placed continuously along an extension direction of the second joining part in parts other than the second joining part crossing part. ### Claim 7 (depends on 1) The vehicle body structure of claim 1, wherein the first joining part and/or the second joining part each include a pair of facing joining parts arranged so as to face each other with a certain spacing therebetween, and a closed section structure is formed between the pair of facing joining parts. ### Claim 8 (depends on 7) The vehicle body structure of claim 7, wherein the first adhesive and/or the second adhesive are provided along edge parts of the facing joining parts facing an inside of the closed section structure. ### Claim 9 (depends on 7) The vehicle body structure of claim 7, wherein the first rigid member and/or the second rigid member are each a long member with a hat-shaped cross section, the first rigid member and/or the second rigid member each include a pair of flange parts provided substantially in parallel with each other so as to extend in their longitudinal directions at both ends in a width direction of the first rigid member and/or the second rigid member, the pair of facing joining parts are joined to the panel member via the pair of flange parts, and a closed section structure including the first rigid member and/or the second rigid member and the panel member is formed between the pair of facing joining parts. ### Claim 10 (depends on 1) The vehicle body structure of claim 1, wherein the panel member is a floor panel forming a vehicle cabin of the body, the first rigid member is at least one cross member for reinforcing the floor panel, the additional panel member is a front panel and/or a rear panel of the body, and the second rigid member is a frame of the body. ### Claim 11 (depends on 10) The vehicle body structure of claim 10, wherein the frame is formed so as to extend in a vehicle fore-and-aft direction on the downside of the floor panel, the at least one cross member is formed so as to cross the frame and extend in a vehicle width direction on the upside of the floor panel and includes a plurality of cross members provided spaced apart from each other in the vehicle fore-and-aft direction, and an adhesive amount per unit area of the first adhesive in the crossing part positioned on both end sides in the vehicle fore-and-aft direction of the floor panel is smaller than an adhesive amount per unit area of the first adhesive in the crossing part positioned around the center in the vehicle fore-and-aft direction of the floor panel. ### Claim 12 (depends on 10) The vehicle body structure of claim 10, wherein the frame is formed so as to extend in a vehicle fore-and-aft direction on the downside of the floor panel, the at least one cross member is formed so as to cross the frame and extend in a vehicle width direction on the upside of the floor panel and includes a plurality of cross members provided spaced apart from each other in the vehicle fore-and-aft direction, and when an external force is exerted on the floor panel from a fore side and/or an aft side, an adhesive amount per unit area of the first adhesive in the crossing part close to a position of an amplitude loop of vibration in the vehicle fore-and-aft direction transmitted to the floor panel is smaller than an adhesive amount per unit area of the first adhesive in the crossing part far from the position of the amplitude loop. ### Claim 13 (depends on 10) The vehicle body structure of claim 10, wherein the panel joining part is formed so as to extend in a vehicle width direction, the frame is joined to the floor panel to extend in the vehicle fore-and-aft direction and is joined to the front panel and/or the rear panel on the fore side or the aft side of the panel joining part. ### Claim 14 (depends on 1) The vehicle body structure of claim 1, wherein at least one of the first joining part, the panel joining part, and the second joining part is a structure with a combined use with spot welding and/or a mechanical jointer. ### Claim 15 (depends on 14) The vehicle body structure of claim 14, wherein the first rigid member and/or the second rigid member are each a long member, the first joining part and/or the second joining part each include a plurality of spot joining parts that are arranged spaced apart from each other in an extension direction of the first rigid member and/or the second rigid member and are formed by causing both the first rigid member and/or the second rigid member and the panel member to be partially welded to each other in addition to joining with the first adhesive and/or the second adhesive. ### Claim 16 (depends on 15) The vehicle body structure of claim 15, wherein a spacing between the spot joining parts is set to be within a range of 10 mm to 100 mm. ### Claim 17 (depends on 14) The vehicle body structure of claim 14, wherein the panel joining part is formed so as to extend in a vehicle width direction, the second rigid member is a long member, and the panel joining part and/or the second joining part each include a plurality of spot joining parts that are arranged spaced apart from each other in an extension direction of the panel joining part and/or the second rigid member and are formed by causing both the additional panel member and/or the second rigid member and the panel member to be partially welded to each other in addition to joining with the panel adhesive and/or the second adhesive. ### Claim 18 (depends on 17) The vehicle body structure of claim 17, wherein a spacing between the spot joining parts is set to be within a range of 10 mm to 100 mm. ### Claim 19 (depends on 1) The vehicle body structure of claim 1, wherein at least one of the panel member and/or the first rigid member in the first joining part, the panel member and/or the additional panel member in the panel joining part, and the panel member and/or the second rigid member in the second joining part has a thickness of less than 2 mm. ### Claim 20 A vehicle body structure, comprising: a panel member forming a body; a first rigid member joined to one face of the panel member via a first joining part; and a second rigid member joined to another face of the panel member via a second joining part, wherein the second joining part includes a damping adhesive that adheres to, and joins together, both the second rigid member and the panel member, the second joining part includes a second joining part crossing part that overlaps with the first joining part and a second joining part adjacent part that is adjacent to the second joining part crossing part and does not overlap with the first joining part, an adhesive amount per unit area of the adhesive in the second joining part crossing part is smaller than an adhesive amount per unit area of the adhesive in the second joining part adjacent part.