# US 10,307,965 B2 · Manufacturing method for joined body

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,307,965 B2
- Document ID: US10307965B2
- Status: Granted
- Kind: B2
- Application number: 15/284,796
- Filed: 2016-10-04
- Published: 2017-04-27
- Granted: 2019-06-04
- Earliest claimed: 2015-10-22
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Yoshihiro Iwano
- Web page: https://patentgrep.com/patent/US10307965B2

## CPC

- B29C 65/0618: {Linear}
- B29C 66/112: {Single lapped joints}
- B29C 66/131: {Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area}
- B29C 66/1312: {Single flange to flange joints, the parts to be joined being rigid (the parts to be joined being flexible B29C66/133)}
- B29C 66/301: {Three-dimensional joints, i.e. the joined area being substantially non-flat (B29C66/5223, B29C66/5224, B29C66/5225 take precedence)}
- B29C 66/3034: {making use of additional elements, e.g. meshes}
- B29C 66/322: {Providing cavities in the joined article to collect the burr}
- B29C 66/524: {Joining profiled elements}
- B29C 66/543: {joining more than two hollow-preforms to form said hollow articles}
- B29C 66/547: {Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles, e.g. endless tubes}
- B29C 66/61: {Joining from or joining on the inside (for making tubes by bending sheets and joining from the inside B29C53/387)}
- B29C 66/636: {using a support which remains in the joined object}
- B29C 66/721: {Fibre-reinforced materials (B29C66/729 takes precedence)}
- B29C 66/7212: {characterised by the composition of the fibres}
- B29C 66/7392: {characterised by the material of at least one of the parts being a thermoplastic}
- B29C 66/73921: {characterised by the materials of both parts being thermoplastics}
- B29C 66/81431: {comprising a single cavity, e.g. a groove}
- B29C 66/8322: {Joining or pressing tools reciprocating along one axis}
- B60R 19/18: {characterised by the cross-section;} Means within the bumper to absorb impact
- B29C 66/71: {characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125)}
- B29C 66/72141: {Fibres of continuous length}
- B29C 66/72143: {Fibres of discontinuous lengths}
- B29K 2701/12: Thermoplastic materials
- B29L 2031/30: Vehicles, e.g. ships or aircraft, or body parts thereof {(vanes or blades B29L2031/08, air bags B29L2022/027)}
- B29L 2031/3044: {Bumpers}
- B60R 19/04: formed from more than one section {in a side-by-side arrangement}
- B60R 2019/1833: {made of plastic material}
- B60R 2019/1853: {of reinforced plastic material}
- B29C: SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING (making preforms B29B11/00; making laminated products by combining previously unconnected layers which become one product whose layers will remain together B32B37/00 - B32B41/00)
- B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B29K: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR {MOULDS, } REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29L: INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES

## Abstract

A manufacturing method for a joined body, includes: bringing a first member and a second member into contact with each other, at least one of the first member and the second member being made of thermoplastic resin, and the second member having a recessed portion on a joining surface to be joined to the first member; and welding the first member and the second member together, including welding a contact portion of the first member and the second member by melting the thermoplastic resin by frictional heat generated in the contact portion by relative movement of the first member and the second member, in a state in which the first member and the second member are in contact with each other.

## Claims

### Claim 1

A manufacturing method for a joined body, comprising:
(a) bringing a first member and a second member into contact with each other, at least one of the first member and the second member being made of thermoplastic resin, and the second member having a recessed portion on a joining surface to be joined to the first member; and
(b) welding the first member and the second member together, including welding a contact portion of the first member and the second member by melting the at least one of the first and second members that is made of the thermoplastic resin by frictional heat, the frictional heat being generated in the contact portion by relative movement of the first member and the second member in a state in which the first member and the joining surface of the second member are in contact with each other and are pressed together, wherein
the first member and the second member each (i) are formed in an elongated shape having a longitudinal direction, (ii) have a shape in a sectional view orthogonal to the longitudinal direction that is hat-shaped, and (iii) include a pair of flange portions and a U-shaped portion with a U-shaped cross-section;
each of the U-shaped portions has a base wall portion and a pair of facing wall portions, the first member includes a first frame member for a vehicle, the second member includes a second frame member for the vehicle, the first frame member and the second frame member form a closed cross-section by the pair of flange portions of each of the first frame member and the second frame member being joined together;
the second member includes a reinforcing member that is arranged inside the closed cross-section and is different from the second frame member, the recessed portion of the second frame member is a first groove that is formed on a joining surface of the flange portions of the second frame member, and extends over substantially an entire length of the second frame member in a longitudinal direction of the second frame member, and a recessed portion of the reinforcing member is a second groove that is formed on an outer surface of the base wall portion of the U-shaped portion of the reinforcing member and extends in a longitudinal direction of the reinforcing member, and does not reach an end on at least one side in the longitudinal direction of the reinforcing member;
the step (b) includes arranging the reinforcing member inside the U-shaped portion of the second frame member and joining the flange portions of the reinforcing member to an inner surface side of the base wall portion of the U-shaped portion of the second frame member, while one end of the reinforcing member in the longitudinal direction of the reinforcing member is positioned closer than the other end is to a side of a center portion of the second frame member in the longitudinal direction of the second frame member; and
the step (b) also includes bringing the joining surface of the flange portions of the second frame member into contact with the joining surface of the flange portions of the first frame member, and bringing the outer surface of the base wall portion of the U-shaped portion of the reinforcing member into contact with an inner surface of the base wall portion of the U-shaped portion of the first frame member, and welding by pressure and vibration.

### Claim 2 (depends on 1)

The manufacturing method according to claim 1, wherein
the step (b) includes welding the recessed portion of the second member and a facing portion that faces the recessed portion together, by introducing melted thermoplastic resin into the recessed portion.

### Claim 3 (depends on 2)

The manufacturing method according to claim 2, wherein
the step (b) includes melting the recessed portion of the second member, the facing portion, and the thermoplastic resin introduced into the recessed portion, by heat transferred from the contact portion to the recessed portion and the facing portion.

### Claim 4 (depends on 1)

The manufacturing method according to claim 1, wherein
the relative movement is vibration of at least one of the first member and the second member.

### Claim 5 (depends on 1)

The manufacturing method according to claim 1, wherein
the first member and the second member are made of thermoplastic resin.

### Claim 6 (depends on 5)

The manufacturing method according to claim 5, wherein
reinforcing fibers are blended into the first member and the second member.

### Claim 7 (depends on 1)

The manufacturing method according to claim 1, wherein
the reinforcing member is provided in a pair, and the step (b) is performed after arranging the reinforcing members on both sides of the U-shaped portion of the second frame member in the longitudinal direction of the second frame member at an inside of the U-shaped portion of the second frame member while end portions on one side in the longitudinal direction of the reinforcing members are facing each other, and joining the flange portions of the reinforcing members to the inner surface side of the base wall portion of the U-shaped portion of the second frame member.