WO2022158391A1 - 接合構造体およびその製造方法、ならびに電線用外装体 - Google Patents
接合構造体およびその製造方法、ならびに電線用外装体 Download PDFInfo
- Publication number
- WO2022158391A1 WO2022158391A1 PCT/JP2022/001138 JP2022001138W WO2022158391A1 WO 2022158391 A1 WO2022158391 A1 WO 2022158391A1 JP 2022001138 W JP2022001138 W JP 2022001138W WO 2022158391 A1 WO2022158391 A1 WO 2022158391A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- resin
- plate
- welding
- resin plate
- joint
- Prior art date
Links
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Images
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- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
- B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
- B29L2031/3462—Cables
Definitions
- the present invention relates to a joint structure, a method for manufacturing the same, and an outer covering for electric wires.
- a wire armor is used around the wire harness that is routed to a vehicle or the like to protect the wire harness from external forces.
- the electric wire sheath protects the electric wire from external force by covering the outer peripheral side of the electric wire.
- Patent Documents 1 and 2 disclose an electric wire outer covering for protecting such a wire harness, which is formed by bending a thermoplastic resin foam sheet to form a cylindrical housing portion, and is attached to the outer periphery of the electric wire. An exterior body for the device is described.
- the electric wire armoring body of Patent Document 1 includes a plurality of wall portions extending along the extending direction of the electric wire and forming a housing portion for housing the electric wire. a lid wall portion, an inner lid wall portion overlapping and joined to the outer lid wall portion, and side wall portions adjacent to both ends of the inner lid wall portion; configured to support
- the wall portion that constitutes the housing portion includes a first wall portion in which a projection is formed and a second wall portion in which a hole is formed.
- the accommodating portion is configured such that at least one of the protrusion and the hole is deformed and the protrusion is inserted into the hole, thereby engaging the first wall and the second wall.
- JP 2019-13107 A Japanese Patent Application Laid-Open No. 2020-89041
- the resin plates can be joined without overlapping the plate surfaces of the resin plates, it is possible to reduce the area of the resin plates required to form a joint structure such as an outer casing for electric wires, thereby reducing material costs. It is desirable that In addition, if the resin plates can be joined without forming protrusions and holes in the resin plates, it is desirable in terms of reducing the number of work processes when forming a joint structure such as an outer casing for electric wires and improving workability. .
- An object of the present invention is to enable resin plates to be joined without providing an extra resin plate portion for joining, and to achieve excellent workability when joining resin plates.
- An object of the present invention is to provide a structure, a method for manufacturing the same, and an outer covering for an electric wire using the joint structure.
- the joint structure is a joint formed by welding a plate surface portion of a first resin plate made of a first resin and an end surface portion of a second resin plate made of a second resin butted against each other.
- a welded concave portion is provided on the surface of the first resin plate at , and a built-up portion formed by melting and flowing and solidifying at least the first resin out of the first resin and the second resin is provided in the inner corner of the back surface.
- the gist and configuration of the present invention are as follows. (1) A joined structure having a joining portion formed by welding a plate surface portion of a first resin plate made of a first resin and an end face portion of a second resin plate made of a second resin against each other, , the first resin is a foamed resin, the second resin is a non-foamed resin or a foamed resin, the joint portion has a welding recess on the surface, and the first resin and the A bonded structure having a build-up portion formed by at least the first resin of the second resin being melted, flowed and solidified.
- a manufacturing method of a joined structure having a build-up portion formed by melt-flowing and solidifying the first resin (9) The method for manufacturing a joined structure according to (8) above, wherein the tip of the welding horn is formed in a convex shape. (10) The method for manufacturing a joined structure according to (8) or (9) above, wherein at least a part of the surface of the tip of the welding horn is curved. (11) The method for manufacturing a joined structure according to any one of (8) to (10) above, wherein at least part of the surface of the tip portion of the welding horn is formed with a plurality of irregularities.
- ADVANTAGE OF THE INVENTION it is possible to bond resin plates together without providing an extra resin plate portion for bonding, and bonding is excellent in workability when bonding resin plates. It is possible to provide a structure, a method for manufacturing the same, and a wire sheath using the joint structure.
- FIGS. 1A and 1B are schematic diagrams showing a main part including a joint portion of a joint structure, FIG. 1A being a plan view and FIG. (cross-sectional view).
- 2A and 2B are schematic plan views of weld recesses in joints constituting joint structures according to various embodiments.
- FIG. 2(b) shows the case where the bottom surface of the welding recess is formed with an irregular uneven shape
- FIG. 2(c) shows the case where the bottom surface of the welding recess is formed with a flat surface.
- FIG. 3 is a plan view showing the shape of a welding recess in a joint of a joint structure of another embodiment.
- FIGS. 4A and 4B are schematic diagrams showing essential parts including a joint of a joint structure of another embodiment, and FIG. FIG.
- FIG. 4(b) shows a case where the surface of the build-up portion of the joint is formed into a convex shape when viewed from the inside corner.
- FIG. 5 is a schematic perspective view showing the structure of the outer covering for electric wire.
- FIG. 6 is a flow diagram of a manufacturing method of a joint structure.
- FIG. 7 is a diagram for explaining the manufacturing method of the joined structure, and is a conceptual diagram for explaining an example of the welding horn pressing step and the joint forming step.
- 8A and 8B are conceptual diagrams showing an example of the shape of the tip of a welding horn used in a method for manufacturing a bonded structure according to another embodiment.
- FIG. 8(b) shows a case where the tip of the welding horn has a convex protrusion and the tip surface of the protrusion has an uneven surface formed by blasting.
- FIG. 8(c) show the case where the tip of the welding horn has a convex projection, and the tip of the projection has a convex surface formed by filleting.
- FIG. 9 is a view of the bonded structure of Inventive Example 1 observed in a cross section perpendicular to both the first resin plate and the second resin plate.
- FIG. 1A and 1B are schematic diagrams showing a main part including a joint portion of a joint structure, FIG. 1A being a plan view and FIG. (cross-sectional view).
- 2A and 2B are schematic plan views of the welded recesses in the joints constituting the joined structures of various embodiments, and FIG. 2(b) shows the case where the bottom surface of the welding recess is formed with an irregular uneven shape, and FIG. 2(c) shows the case where the bottom surface of the welding recess is formed with a flat surface.
- FIG. 3 is a plan view showing the shape of a welding recess in a joint of a joint structure of another embodiment.
- 4A and 4B are schematic diagrams showing essential parts including a joint portion of a joint structure according to another embodiment, and FIG. FIG.
- 4(b) shows a case where the surface of the welded portion of the joint is formed into a shape that is concave when viewed, and a case where the surface of the build-up portion of the joint is formed into a shape that is convex when viewed from the inside corner.
- the bonded structure 1 includes a plate surface portion 22 of a first resin plate 21 made of a first resin, and an end surface portion 24 of a second resin plate 23 made of a second resin. are butted and welded together to form a joint 10 .
- the first resin is a foamed resin
- the second resin is a non-foamed resin (solid resin) or a foamed resin
- the joint portion 10 is formed by the surface 22a of the plate surface portion 22 of the first resin plate 21.
- the inner corner 10a formed on the back surface 22b of the plate surface portion 22 at least the first resin out of the first resin and the second resin is melted and flowed and solidified to form a built-up portion 27.
- the welding recesses 25 are formed on the surface 22 a of the plate surface portion 22 of the first resin plate 21 , so that the first resin is pushed out in the depth direction of the welding recesses 25 and the end surface portion 24 of the second resin plate 23 is pushed out. , and welded to the end surface portion 24 of the second resin plate 23, the bonding area between the end surface portion 24 of the second resin plate 23 and the plate surface portion 22 of the first resin plate 21 increases.
- the first resin plate 21 and the second resin plate 23 are joined by welding. Therefore, even if the plate surface of the first resin plate 21 and the plate surface of the second resin plate 23 are not joined, the first resin plate 21 and the second resin plate 23 can be joined by welding.
- a joint structure 1 capable of joining a first resin plate 21 and a second resin plate 23 without providing a resin plate portion and having excellent workability when joining them. can do.
- welding means plastic welding.
- ultrasonic welding is a technique of heating and bonding a plurality of resin plates made of thermoplastic resin or a plurality of portions of a single resin plate to exceed the melting point.
- Ultrasonic welding is a technique of melting and bonding a plurality of resin plates or a plurality of portions of a single resin plate by ultrasonic vibration and pressure.
- the first resin plate 21 and the second resin plate 23 are made of a first resin and a second resin, respectively.
- the first resin plate 21 and the second resin plate 23 may be made of the same resin plate, or may be made of different resin plates. Among these, when the first resin plate 21 and the second resin plate 23 are made of the same resin plate, the first resin plate 21 and the second resin plate 23 are formed by bending one resin plate. . At this time, the first resin plate 21 is composed of a plate surface portion of a resin plate, and the second resin plate 23 is composed of an end surface portion of the same resin plate. As a result, the number of parts constituting the joint structure 1 is further reduced, so that workability in forming the joint structure can be further improved.
- the first resin and the second resin that constitute the first resin plate 21 and the second resin plate 23 is preferably a thermoplastic resin, such as polyethylene resin, polypropylene resin, polycarbonate resin, Polyethylene terephthalate resin, polybutylene terephthalate resin, polyamide resin, polyphenylene sulfide resin, polystyrene resin, polyvinyl chloride resin, polyvinyl acetate resin, polytetrafluoroethylene resin, acrylic resin and the like can be mentioned.
- a thermoplastic resin such as polyethylene resin, polypropylene resin, polycarbonate resin, Polyethylene terephthalate resin, polybutylene terephthalate resin, polyamide resin, polyphenylene sulfide resin, polystyrene resin, polyvinyl chloride resin, polyvinyl acetate resin, polytetrafluoroethylene resin, acrylic resin and the like can be mentioned.
- one or both of the first resin and the second resin preferably contain a polypropylene resin.
- the first resin and the second resin may be composed of the same resin species, or may be composed of different resin species.
- the bonding strength between the first resin plate 21 and the second resin plate 23 can be further increased by forming the first resin and the second resin from the same resin species.
- additives that are added to ordinary resins may be added to the first resin and the second resin depending on the application.
- Additives include, for example, fillers, antioxidants, stabilizers, flame retardants, metal deactivators, UV absorbers, light stabilizers, plasticizers, nucleating agents, compatibilizers, clarifying agents, antistatic agents, One or more of lubricants and the like can be used without particular limitation.
- the first resin and the second resin at least the first resin is made of foamed resin.
- the first resin is made of foamed resin.
- air bubbles are discharged from the resin and the resin shrinks, so that the melted region of the resin is less likely to spread in the plate surface direction of the first resin plate 21 and the second resin plate 23. be able to.
- the first resin plate 21 when forming the welding recesses 25 in the first resin plate 21 , the first resin is likely to be pushed out in the depth direction of the welding recesses 25 .
- the density of the foamed resin is not particularly limited, but can be, for example, in the range of 200 kg/m 3 or more and 1000 kg/m 3 or less.
- the density of the foamed resin is 1000 kg/m 3 . It is preferably 700 kg/m 3 or less, more preferably 500 kg/m 3 or less.
- the density of the foamed resin is preferably 200 kg/m 3 or more from the viewpoint of ensuring the mechanical strength of the foamed resin and promoting the melt flow of the foamed resin when forming the welding recesses 25 .
- the second resin that constitutes the second resin plate 23 may be composed of a non-foamed resin, or may be composed of the aforementioned foamed resin.
- the bonding strength between the first resin plate 21 and the second resin plate 23 can be further increased by forming the second resin from a non-foaming resin.
- the plate thickness dimension t1 of the first resin plate 21 and the plate thickness dimension t2 of the second resin plate 23 are not particularly limited. is preferably 0.5 mm or more and 5.0 mm or less, and particularly preferably 1.0 mm or more and 2.0 mm or less.
- the joint structure 1 is a joint portion 10 formed by welding a plate surface portion 22 of a first resin plate 21 made of a first resin and an end surface portion 24 of a second resin plate 23 made of a second resin while facing each other. have Here, as shown in FIG. 1, the joint portion 10 is in a state in which the end surface portion 24 of the second resin plate 23 is butted against the back surface (lower surface in FIG. 1) of the plate surface portion 22 of the first resin plate 21. and formed by welding.
- the joint portion 10 has a welding concave portion 25 on the surface 22 a of the plate surface portion 22 of the first resin plate 21 .
- the surface 22a of the plate surface portion 22 is the surface on the side where the end surface portion 24 of the second resin plate 23 is not butted.
- the bottom surface 26 of the welding recess 25 may be made of non-foaming resin.
- the first resin when the first resin is extruded in the depth direction of the welding recess 25 and melted and flowed near the end surface 24 of the second resin plate 23, the first resin on the bottom surface 26 of the welding recess 25 is also melted. Therefore, non-foaming resin is often formed on the bottom surface 26 of the welding recess 25 .
- the width dimension w of the bottom surface 26 of the welding recess 25 along the thickness direction (X1 direction in FIG. 1) of the second resin plate 23 is equal to the thickness dimension t2 of the second resin plate 23, or It is preferably larger than the plate thickness dimension t 2 of the second resin plate 23 .
- the bottom surface 26 of the welding concave portion 25 is preferably configured to include the positions where both surfaces of the second resin plate 23 exist when viewed in the plate thickness direction (X1 direction) of the second resin plate 23 .
- the width dimension w of the bottom surface 26 of the welding recess 25 is preferably larger than the plate thickness dimension t2 of the second resin plate 23 within a range of more than 0 mm and 1.0 mm or less.
- the width dimension w of the bottom surface 26 of the welding recess 25 may be smaller than the plate thickness dimension t2 of the second resin plate 23 .
- the surface shape of the bottom surface 26 of the welding concave portion 25 can be, for example, a grid-like uneven shape as shown in FIG. 1(a). As will be described later, such a grid-like concave-convex shape is formed by pressing the front end portion of the welding horn knurled in a twill pattern from the surface 22a side of the plate surface portion 22 of the first resin plate 21. can do. Thereby, the resin can be easily extruded in the depth direction of the welding recess 25 .
- the surface shape of the bottom surface 26 of the welding recess 25 is not limited to the grid-like uneven shape shown in FIG. 1(a).
- it may be a striped uneven shape formed by using a flat knurled tip of a welding horn.
- it may be an irregular uneven shape such as that formed by using the tip of a welding horn that has been blasted as shown in FIG. 2(b). It may also be a flat surface as shown in FIG. 2(c).
- the shape of the welding recess 25 is not limited to the rectangular shape shown in FIG. 1(a), and may be circular as shown in FIG.
- the joint portion 10 is formed by the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 at the inner corner 10a of the back surface 22b formed by the first resin and the first resin.
- At least the first resin among the two resins has a build-up portion 27 formed by melting and flowing and solidifying.
- the bonding area between the end surface portion 24 of the second resin plate 23 and the plate surface portion 22 of the first resin plate 21 is increased, so that the first resin plate 21 and the second resin plate 23 are bonded by welding. be able to.
- the shape of the build-up portion 27 is not particularly limited, and for example, as shown in FIG. Alternatively, as shown in FIG. 4B, the surface of the build-up portion 27F of the joint portion 10F may have a convex shape when viewed from the internal corner 10a.
- the joint portion 10 preferably has a minimum thickness t3 of 0.1 mm or more, more preferably 0.3 mm or more, which is the minimum thickness regardless of the measurement direction when measured from the position of the welding recess 25. is more preferable.
- the preferable lower limit of the minimum thickness t3 of the joint 10 may be 0.1 mm or 0.10 mm.
- the minimum thickness t3 of the joint 10 when measured from the position of the welding recess 25 may be smaller than 0.1 mm, but by setting it to 0.1 mm or more, the welding recess 25 is formed. Since the thickness of the joint 10 (the total thickness of the first resin plate 21 and the second resin plate 23) is ensured even in the vicinity of can.
- the upper limit of the minimum thickness t3 of the joint portion 10 when measured from the position of the welding recess 25 is preferably 2.0 mm, more preferably the plate thickness (thickness of the first resin plate 21 It is a value about 0.1 mm smaller than the height).
- the upper limit of the minimum thickness t3 is set to a value smaller than the plate thickness by about 0.1 mm, for example, when the thickness of the first resin plate 21 is 1.5 mm, the minimum thickness t3 of the joint 10 can be 1.4 mm.
- the upper limit of the minimum thickness t3 of the joint portion 10 can be set to 0.9 mm.
- the welding recess 25 can be Since the resin is easily extruded during formation, the bonding strength between the first resin plate 21 and the second resin plate 23 can be increased.
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 when measured at the bottom position of the welding recess 25 is 0.1 mm or more. is preferred, and 0.3 mm or more is more preferred.
- the preferable lower limit of the minimum thickness t4 of the first resin may be 0.1 mm or 0.10 mm.
- the minimum thickness t4 of the first resin at the bottom of the welding recess 25 may be less than 0.1 mm, but if it is 0.1 mm or more, the first resin may break at the joint 10. can be made difficult.
- the minimum thickness t4 of the first resin at the bottom surface position of the welding recess 25 is set to 2.0 mm or less, more preferably 1.0 mm or less, the resin is extruded when forming the welding recess 25. Therefore, the workability when joining the first resin plate 21 and the second resin plate 23 can be further improved. Further, when the joint structure 1 is formed by ultrasonic welding, which will be described later, the vibration of the ultrasonic waves U can facilitate melting of the end surface portion 24 of the second resin plate 23 .
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 is the thickness of the first resin plate 21 measured at the deepest position in the bottom surface 26 of the welding recess 25. However, it may be the thickness of the first resin plate 21 measured at different positions.
- the abutting angle between the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 is in the range of 45° or more and 90° or less when measured on the acute angle side. is preferable, and the range of 60° or more and 90° or less is more preferable.
- the wire armoring body 30 is a wire armoring body to be mounted on the outer periphery of the wire 4 and includes the joint structure 1 .
- FIG. 5 is a schematic perspective view showing the structure of the electric wire outer covering 30.
- the wire sheathing body 30 includes a wall portion 31 that extends along the direction X2 in which the wire 4 extends. ing.
- the wire exterior body 30 is configured without providing an extra resin plate portion for bonding, and the resin plate is bonded. Since workability in forming the wire sheathing body 30 is also improved, it is possible to obtain the wire sheathing body 30 capable of appropriately protecting the wires 4 while achieving weight reduction.
- the electric wire 4 is shown as a single columnar shape. It can be anything.
- the shape of the wire sheathing body 30 is not particularly limited.
- the wall portion 31 of the electric wire outer covering 30 is configured so as to surround the entire circumference of the electric wire 4 .
- the wire harness with armor 3 of the present invention includes a wire harness 40 constituted by the electric wires 4 and the above-described wire armor 30.
- the wire armor 30 is composed of wires It is attached to the outer circumference of the harness 40 .
- at least a portion of the wire bundle that constitutes the wire harness 40 and at least a portion of the wire assembly including a plurality of divided wire bundles branching from the wire bundle and extending can be protected by the wire sheathing 30 . .
- FIG. 6 is a flow chart of the manufacturing method of the joint structure 1.
- This manufacturing method includes a positioning step ST1 of positioning and holding the end surface portion 24 of the second resin plate 23 made of the second resin in a state of abutting the back surface 22b of the plate surface portion 22 of the first resin plate 21 made of the first resin. With the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 facing each other, the tip portion 51 of the welding horn 5 is pushed from the surface 22a side of the plate surface portion 22 of the first resin plate 21.
- a welding horn pressing step ST2 of pressing ultrasonic waves U are oscillated from the welding horn 5, and the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 are welded while facing each other. and a bonding portion forming step ST3 for forming the bonding portion 10 .
- a first resin plate 21 made of a first resin and a second resin plate 23 made of a second resin are prepared.
- the first resin constituting the first resin plate 21 is a foamed resin.
- foamed resin As the first resin plate 21, after the tip portion 51 of the welding horn 5 is pressed against the first resin plate 21 in the welding horn pressing step ST2 to be described later, When the first resin is melted using the ultrasonic wave U, air bubbles are removed from the first resin and the first resin shrinks, and the first resin is easily pushed out in the depth direction of the welding recess 25 .
- the second resin forming the second resin plate 23 may be either a non-foamed resin or a foamed resin.
- the positioning step ST1 is performed on these first resin plate 21 and second resin plate 23 .
- the end surface portion 24 of the second resin plate 23 made of the second resin is positioned and held in abutment with the back surface 22b of the plate surface portion 22 of the first resin plate 21 made of the first resin.
- the wire 4 is positioned at a desired position and size by positioning the first resin plate 21 and the second resin plate 23 in the positioning step ST1.
- a housing portion 32 for housing can be formed.
- the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 are positioned and held by means for holding them at predetermined positions, for example, by adjusting the shape and size of the resin plate.
- the positional relationship between the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 is fixed while they are in contact with each other by means such as using a special positioning jig that has been created. You can do it by doing
- FIG. 7 is a diagram for explaining the manufacturing method of the joint structure, and is a conceptual diagram for explaining an example of the welding horn pressing process and the joint forming process.
- the tip portion 51 of the welding horn 5 is formed in the shape of a convex protrusion.
- the base portion of the welding horn 5 is hardly deformed, and when the tip portion 51 of the welding horn 5 is pressed against the plate surface portion 22 of the first resin plate 21 in the welding horn pressing step ST2, the first resin plate Since the force per unit area acting on the plate surface portion 22 of 21 increases, the first resin is easily pushed out in the depth direction of the welding recess 25 when forming the welding recess 25 in the joint portion forming step ST3 described later. be able to.
- FIG. 8 is a conceptual diagram showing an example of the shape of the tip of a welding horn used for manufacturing a joint structure of another embodiment.
- FIG. 8(a) is a view showing a structure having an uneven surface formed by knurling at the tip of the welding horn.
- FIG. 8(b) is a view showing a configuration in which the tip of the welding horn has a convex protrusion and the tip surface of the protrusion has an uneven surface formed by blasting.
- FIG. 8(c) is a diagram showing a configuration in which a welding horn has a convex projection at its tip, and the tip of the projection has a convex surface formed by filleting.
- the front end portion 51 of the welding horn 5 may have a plurality of irregularities formed on at least part of the surface thereof by knurling such as twill or flat stitches.
- a convex projection may be formed on the tip portion 51G of the welding horn 5G, and a plurality of protrusions may be formed on at least a part of the surface of the tip portion 51G by blasting. unevenness may be formed.
- the pressure applied to the contact portion with can be concentrated on the convex portion, and the vibration of the ultrasonic wave U can also be concentrated on the convex portion in the bonding portion forming step ST3 described later, so that at least The first resin can be easily extruded in the depth direction of the welding recess 25 .
- At least a part of the surface of the tip portion 51H of the welding horn 5H may be curved.
- a chamfered convex surface may be formed at the tip of the projection of the mold by filleting.
- the convex portion of the curved surface of the tip portion 51 is replaced by the portion where the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 overlap. , the end portion of the tip portion 51 is pushed shallowly, so the thickness of the first resin plate 21 after forming the welding recess 25 (especially when measured from the position of the welding recess 25 It is possible to easily obtain a required size for the minimum thickness t 3 of the first resin plate in .
- ultrasonic waves U are oscillated from the welding horn 5, and the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 are welded in abutted state.
- a bonding portion forming step ST3 for forming the bonding portion 10 is performed. At least the first resin out of the first resin and the second resin is heated and melted by the vibration of the ultrasonic waves U oscillated from the welding horn 5 , and the molten resin is extruded by the welding horn 5 . At this time, a part of the end face portion 24 of the second resin plate 23 may melt together with the first resin to form a mixture with the extruded first resin.
- the extruded resin melts and flows in the vicinity of the end surface portion 24 of the second resin plate 23, and welds to the inner corner 10a between the back surface 22b of the plate surface portion 22 and the end surface portion 24 of the second resin plate 23, thereby joining.
- a part 10 is formed.
- a welding concave portion 25 is formed at a portion of the surface 22a of the plate surface portion 22 of the first resin plate 21 against which the welding horn 5 was pressed.
- a built-up portion 27 is formed at an internal corner 10a between the end surface portion 24 of the second resin plate 23 and the back surface portion 22b of the plate surface portion 22 .
- the joint portion 10 has the welding recess 25 on the surface 22a of the plate surface portion 22 of the first resin plate 21, and the inner corner 10a of the joint portion 10 on the back surface 22b of the plate surface portion 22 has a second It is possible to obtain the joint structure 1 having the build-up portion 27 formed by melting and flowing and solidifying at least the first resin out of the first resin and the second resin.
- the first resin plate 21 and the second resin plate 23 foamed resin plates made of foamed polypropylene resin having a density of 480 kg/m 3 were used.
- the plate thickness dimension t1 of the first resin plate 21 and the plate thickness dimension t2 of the second resin plate 23 are both set to 1.5 mm.
- resin plates of different colors were used in order to facilitate confirmation of the welded state.
- a second resin plate made of the second resin is attached to the back surface 22b of the plate surface portion 22 of the first resin plate 21 made of the first resin.
- the end face portions 24 of 23 were butted at right angles and positioned by a positioning jig while they were in contact to hold their positional relationship. That is, the butting angle between the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 was set to 90°.
- the plate surface portion 22 of the first resin plate 21 and the end surface portion 24 of the second resin plate 23 are butted against each other, and the surface 22a side of the plate surface portion 22 of the first resin plate 21 is pressed.
- the tip 51 of the welding horn 5 was pressed.
- a convex protrusion having a tip end surface of 2.4 mm in length and 8.0 mm in width is formed on the tip portion 51.
- a tip surface on which a plurality of irregularities are formed by twill knurling with a module (m) of 0.2 as defined in JIS B 0951 was used.
- the tip portion 51 of the welding horn 5 is pressed against the first resin plate 21 and the second resin plate 23 so that the lateral direction (longitudinal direction) of the tip portion 51 overlaps the thickness direction of the second resin plate 23. rice field. At this time, the tip portion 51 of the welding horn 5 was evenly protruded from the second resin plate 23 in the plate thickness direction of the second resin plate 23 .
- ultrasonic waves U were oscillated from the welding horn 5 as the joint formation step ST3.
- the ultrasonic waves U from the welding horn 5 are oscillated using a small welder (manufactured by Ultrasonic Industry Co., Ltd., model number: P128), and the ultrasonic waves with an output of 100 W and a frequency of 28 kHz are oscillated for 0.9 seconds.
- the welding horn 5 By setting the welding horn 5 to a pressing depth of 0.75 mm, the first resin plate 21 and the second resin plate 23 are welded to form the joint 10, thereby producing the joint structure 1. As shown in FIG.
- the extruded first resin melts and flows near the end surface portion 24 of the second resin plate 23 while forming a mixture with the molten second resin, and the back surface 22b of the plate surface portion 22 and the second resin plate It has been found that the built-up portion 27 is formed by welding to the internal corner 10a of the end face portion 24 of 23 .
- the welding recesses 25 are formed on the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof is formed with a grid-like uneven shape. It had been. Moreover, the vertical and horizontal dimensions of the bottom surface 26 of the welding recess 25 were substantially the same as the dimensions of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was about 2.4 mm.
- the minimum thickness t3 of the bonded portion 10 measured from the position of the weld recess 25 regardless of the measurement direction was 0.75 mm.
- the tip position of the end surface portion 24 of the second resin is at substantially the same position as the plate surface portion 22 of the first resin plate 21 before the joint portion 10 is formed, and the bottom surface 26 of the welding recess 25 is the deepest.
- the measured minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 was 0.75 mm.
- the bonded portion 10 was pulled along the depth direction of the weld recess 25 using an autograph tensile tester (model number: AGS-X, 10N-10kN) manufactured by Shimadzu Corporation.
- an autograph tensile tester model number: AGS-X, 10N-10kN
- the bonding strength was measured as 147 [N].
- a welding concave portion 25 is formed in the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof has: A grid-like uneven shape was formed. Moreover, the vertical and horizontal dimensions of the bottom surface 26 of the welding recess 25 were substantially the same as the dimensions of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was around 2.0 mm.
- the minimum thickness t3 of the bonded portion 10 measured from the position of the weld recess 25 regardless of the measurement direction was 0.75 mm.
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 measured at the deepest position on the bottom surface 26 of the welding recess 25 was 0.75 mm.
- a welding concave portion 25 is formed in the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof has: A grid-like uneven shape was formed. Moreover, the vertical and horizontal dimensions of the bottom surface 26 of the welding recess 25 were substantially the same as the dimensions of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was about 1.6 mm.
- the minimum thickness t3 of the bonded portion 10 measured from the position of the weld recess 25 regardless of the measurement direction was 0.75 mm.
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 measured at the deepest position on the bottom surface 26 of the welding recess 25 was 0.75 mm.
- FIG. 8(b) As a welding horn, as shown in FIG. 8(b), a convex shape having a cross-sectional size of 2.0 mm in length and 8.0 mm in width and protruding 0.5 mm in a mountain shape is provided at the tip 51G.
- a joint structure 1 was fabricated in the same manner as in Example 1 of the present invention, using a welding horn 5G having an uneven surface formed by blasting on the tip surface of the protrusion.
- a welding concave portion 25 is formed in the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof has:
- the shape of the convex protrusion protruding in the mountain shape of the welding horn 5 was transferred as it was.
- the size and shape of the bottom surface 26 of the welding recess 25 were substantially the same as the size and shape of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was around 2.0 mm.
- the minimum thickness t3 of the bonded portion 10 measured from the position of the weld recess 25 regardless of the measurement direction was 1.00 mm.
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 measured at the deepest position on the bottom surface 26 of the welding recess 25 was 0.75 mm.
- the bonding strength of the obtained bonded structure 1 was measured by the same measurement method as in Inventive Example 1, the bonding strength was measured to be 135 [N].
- a welding concave portion 25 is formed in the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof has:
- the shape of the convex protrusion protruding in the mountain shape of the welding horn 5 was transferred as it was.
- the size and shape of the bottom surface 26 of the welding recess 25 were substantially the same as the size and shape of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was about 2.0 mm.
- the minimum thickness t3 of the bonded portion 10 measured from the position of the weld recess 25 regardless of the measurement direction was 0.90 mm.
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 measured at the deepest position on the bottom surface 26 of the welding recess 25 was 0.75 mm.
- a bonded structure 1 was produced in the same manner as in Inventive Example 1, except that the welding horn 5 was pressed into a depth of 1.45 mm when forming the bonded portion 10 .
- the welding recesses 25 are formed on the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof is formed with a grid-like uneven shape. rice field. Moreover, the vertical and horizontal dimensions of the bottom surface 26 of the welding recess 25 were substantially the same as the dimensions of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was about 2.4 mm.
- the minimum thickness t3 of the bonded portion 10 regardless of the measurement direction when measured from the position of the welding recess 25 was 0.05 mm.
- the tip position of the end surface portion 24 of the second resin is at substantially the same position as the plate surface portion 22 of the first resin plate 21 before the joint portion 10 is formed, and the bottom surface 26 of the welding recess 25 is the deepest.
- the measured minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 was 0.05 mm.
- the bonding strength of the obtained bonded structure 1 was measured by the same measurement method as in Inventive Example 1, the bonding strength was measured to be 70 [N].
- the plate thickness dimension t1 of the first resin plate 21 is set to 3.0 mm
- the plate thickness dimension t2 of the second resin plate 23 is set to 1.5 mm
- the pressing depth of the welding horn 5 when forming the joint 10 is A bonded structure 1 was produced in the same manner as in Inventive Example 1, except that the thickness was 0.90 mm.
- the welding recesses 25 are formed on the surface 22a of the plate surface portion 22 of the first resin plate 21, and the bottom surface 26 thereof is formed with a grid-like uneven shape. rice field. Moreover, the vertical and horizontal dimensions of the bottom surface 26 of the welding recess 25 were substantially the same as the dimensions of the tip portion 51 of the welding horn 5 . That is, the width dimension w of the bottom surface 26 of the welding recess 25 along the plate thickness direction of the second resin plate 23 was about 2.4 mm.
- the minimum thickness t3 of the bonded portion 10 measured from the position of the weld recess 25 regardless of the measurement direction was 2.10 mm.
- the tip position of the end surface portion 24 of the second resin is at substantially the same position as the plate surface portion 22 of the first resin plate 21 before the joint portion 10 is formed, and the bottom surface 26 of the welding recess 25 is the deepest.
- the measured minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 was 2.10 mm.
- the bonding strength of the obtained bonded structure 1 was measured by the same measurement method as in Inventive Example 1, the bonding strength was measured to be 12 [N].
- Comparative Example 1 As Comparative Example 1, a joint structure having the structure described in FIG. 11 of Patent Document 2 was formed. A through hole is provided in the first resin plate 21, and a protrusion is provided at the tip of the end face portion 24 of the second resin plate 23. The protrusion includes a wide head forming the tip and the head and a narrow body connecting the abutting surfaces of the first resin plate 21 and the first resin plate 21 . Next, in the through hole of the plate surface portion 22 of the first resin plate 21, the protrusions are inserted in order from the back side, with the head portion and the trunk portion being bent, with the portion of the protrusion having a wider head portion being bent.
- Comparative Example 1 a larger number of resin plates than in the example of the present invention were required in order to provide the protrusion at the tip portion of the end face portion 24 of the second resin plate 23 .
- the bonding strength of the obtained bonded structure was measured by the same method as in Inventive Example 1, the maximum bonding strength was 93 [N].
- Comparative Example 2 In Comparative Example 2, a hole was provided in the first resin plate 21 and a protrusion was provided at the tip of the end face portion 24 of the second resin plate 23 . Next, the protrusion of the end surface 24 of the second resin plate 23 is inserted into the hole of the plate surface 22 of the first resin plate 21 from the rear surface side, and the end surface 24 of the second resin plate 23 is butted at right angles. rice field. After that, the protruding portion of the end surface portion 24 of the second resin plate 23 protruding from the hole portion of the plate surface portion 22 of the first resin plate 21 is crimped by heat melting, so that the end surface portion 24 of the second resin plate 23 is and the plate surface portion 22 of the first resin plate 21 were fixed.
- the joined structure 1 of Examples 1 to 7 of the present invention can join the resin plates without providing an extra resin plate portion for joining, and can join the resin plates. It was also excellent in workability.
- the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 when measured at the bottom surface position of the welding recess 25 is Since the bonding strength exceeded 120 [N] in all cases in the range of 0.1 mm to 2.0 mm, the bonding strength was high, and the resin plates were firmly bonded together. . Therefore, from the viewpoint of increasing the bonding strength and enabling the resin plates to be firmly bonded without providing an extra resin plate portion for bonding, the measurement was performed at the bottom surface position of the welding recess 25. It is considered preferable that the minimum thickness t4 of the first resin along the thickness direction of the first resin plate 21 at this time is in the range of 0.1 mm or more and 2.0 mm or less.
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Abstract
Description
(1)第1樹脂からなる第1樹脂板の板面部と、第2樹脂からなる第2樹脂板の端面部とを突き合わせた状態で溶着して形成した接合部を有する接合構造体であって、前記第1樹脂が発泡樹脂であり、前記第2樹脂が非発泡樹脂または発泡樹脂であり、前記接合部は、表面に溶着凹部を有し、裏面の入隅に、前記第1樹脂と前記第2樹脂のうち少なくとも前記第1樹脂が溶融流動して固化して形成した肉盛部分を有する、接合構造体。
(2)前記接合部は、前記溶着凹部の底面位置で測定したときの、前記第1樹脂の最小厚さが0.1mm以上2.0mm以下の範囲である、上記(1)に記載の接合構造体。
(3)前記接合部は、前記溶着凹部位置から測定したときの最小厚さが0.1mm以上である、上記(1)または(2)に記載の接合構造体。
(4)前記第1樹脂板の板面部と、前記第2樹脂板の端面部との突合せ角度は、
鋭角側で測定して45°以上90°以下の範囲である、上記(1)から(3)までのいずれか1項に記載の接合構造体。
(5)前記第1樹脂および前記第2樹脂のうち一方または両方は、ポリプロピレン樹脂を含有する、上記(1)から(4)までのいずれか1項に記載の接合構造体。
(6)電線の外周に装着される電線用外装体であって、上記(1)から(5)のいずれか1項に記載の接合構造体を備える、電線用外装体。
(7)ワイヤハーネスと、上記(6)に記載の電線用外装体とを備え、前記電線用外装体が、前記ワイヤハーネスの外周に装着されている、外装体付きワイヤハーネス。
(8)第1樹脂からなる第1樹脂板の板面部の裏面に、第2樹脂からなる第2樹脂板の端面部を突き合わせた状態で位置決め保持する位置決め工程と、前記第1樹脂板の板面部と前記第2樹脂板の端面部とを突き合わせた状態で、前記第1樹脂板の板面部の表面側から溶着ホーンの先端部を押し当てる溶着ホーン押当工程と、前記溶着ホーンから超音波を発振させて、前記第1樹脂板の板面部と前記第2樹脂板の端面部とを突き合わせた状態で溶着して接合部を形成する接合部形成工程と、を含み、前記第1樹脂が発泡樹脂であり、前記第2樹脂が非発泡樹脂または発泡樹脂であり、前記接合部は、表面に溶着凹部を有し、裏面の入隅に、前記第1樹脂と前記第2樹脂のうち少なくとも前記第1樹脂が溶融流動して固化して形成した肉盛部分を有する、接合構造体の製造方法。
(9)前記溶着ホーンの先端部は、凸型突起状に形成されている、上記(8)に記載の接合構造体の製造方法。
(10)前記溶着ホーンの先端部は、表面の少なくとも一部が曲面状に形成されている、上記(8)または(9)に記載の接合構造体の製造方法。
(11)前記溶着ホーンの先端部は、表面の少なくとも一部が複数の凹凸で形成されている、上記(8)から(10)までのいずれか1項に記載の接合構造体の製造方法。
接合構造体1は、図1に記載されるように、第1樹脂からなる第1樹脂板21の板面部22と、第2樹脂からなる第2樹脂板23の端面部24とを突き合わせた状態で溶着して形成した接合部10を有する。この接合構造体1は、第1樹脂が発泡樹脂であり、第2樹脂が非発泡樹脂(ソリッド樹脂)または発泡樹脂であり、接合部10は、第1樹脂板21の板面部22の表面22aに溶着凹部25を有し、板面部22の裏面22bに形成される入隅10aに、第1樹脂と第2樹脂のうち少なくとも第1樹脂が溶融流動して固化して形成した肉盛部分27を有する。
第1樹脂板21および第2樹脂板23は、それぞれ第1樹脂および第2樹脂によって構成される。
接合構造体1は、第1樹脂からなる第1樹脂板21の板面部22と、第2樹脂からなる第2樹脂板23の端面部24とを突き合わせた状態で溶着して形成した接合部10を有する。ここで、接合部10は、図1に示すように、第1樹脂板21の板面部22の裏面(図1の下側の面)に、第2樹脂板23の端面部24を突き合わせた状態で、溶着により形成される。
電線用外装体30は、電線4の外周に装着される電線用外装体であって、接合構造体1を備えるものである。
本発明の外装体付きワイヤハーネス3は、電線4によって構成されるワイヤハーネス40と、上述の電線用外装体30とを備えるものであり、電線用外装体30が、ワイヤハーネス40の外周に装着されるものである。これにより、ワイヤハーネス40を構成する電線束や、電線束からさらに分岐させて延在する複数の分割電線束からなる電線集合体の少なくとも一部を、電線用外装体30によって保護することができる。
次に、上記の接合構造体1の製造方法について説明する。図6は、接合構造体1の製造方法のフロー図である。この製造方法は、第1樹脂からなる第1樹脂板21の板面部22の裏面22bに、第2樹脂からなる第2樹脂板23の端面部24を突き合わせた状態で位置決め保持する位置決め工程ST1と、第1樹脂板21の板面部22と第2樹脂板23の端面部24とを突き合わせた状態で、第1樹脂板21の板面部22の表面22aの側から溶着ホーン5の先端部51を押し当てる溶着ホーン押当工程ST2と、溶着ホーン5から超音波Uを発振させて、第1樹脂板21の板面部22と第2樹脂板23の端面部24とを突き合わせた状態で溶着して接合部10を形成する接合部形成工程ST3と、を含む。
第1樹脂板21および第2樹脂板23として、いずれも密度が480kg/m3の発泡ポリプロピレン樹脂からなる発泡樹脂板を用いた。ここで、第1樹脂板21の板厚寸法t1および第2樹脂板23の板厚寸法t2は、いずれも1.5mmとした。なお、第1樹脂板21と第2樹脂板23は、溶着状態の確認を容易にするため、異なる色の樹脂版を用いた。
溶着ホーン5として、先端部51に縦2.0mm、横8.0mmの先端面を有する凸型の突起が形成されており、その突起の先端面に、JIS B 0951に規定される、モジュール(m)が0.2である綾目(アヤ目)のローレットによって、複数の凹凸が形成されているものを用いて、本発明例1と同様に接合構造体1を作製した。
溶着ホーン5として、先端部51に縦1.6mm、横8.0mmの先端面を有する凸型の突起が形成されており、その突起の先端面に、JIS B 0951に規定される、モジュール(m)が0.2である綾目(アヤ目)のローレットによって、複数の凹凸が形成されているものを用いて、本発明例1と同様に接合構造体1を作製した。
溶着ホーンとして、図8(b)に示すように、先端部51Gに、横断面の大きさが縦2.0mm、横8.0mmであり、かつ先端が山形に0.5mm突出した、凸型の突起が形成されており、その突起の先端面に、ブラスト加工によって形成される凹凸面を有する溶着ホーン5Gを用いて、本発明例1と同様に接合構造体1を作製した。
溶着ホーンとして、図8(c)に示すように、先端部51Hに、横断面の大きさが縦2.0mm、横8.0mmであり、かつ先端が山形に突出した、凸型の突起が形成されており、その突起の先端に、半径1.0mmのフィレット加工を施し、突出部の高さを0.5mmとした凸面を有する溶着ホーン5Hを用いて、本発明例1と同様に接合構造体1を作製した。
接合部10を形成する際の溶着ホーン5の押し込み深さを1.45mmとした以外は本発明例1と同様にして、接合構造体1を作製した。
第1樹脂板21の板厚寸法t1を3.0mmとし、第2樹脂板23の板厚寸法t2を1.5mmとし、接合部10を形成する際の溶着ホーン5の押し込み深さを0.90mmとした以外は本発明例1と同様にして、接合構造体1を作製した。
比較例1として、上述の特許文献2の図11に記載される構造の接合構造を形成した。第1樹脂板21に貫通孔を設けるとともに、第2樹脂板23の端面部24の先端部に突部を設け、このうち突部には、先端を形成する幅広の頭部と、この頭部と第1樹脂板21との突き合わせ面を連結する幅狭の胴部とを設けた。次いで、第1樹脂板21の板面部22の貫通孔に、裏面の側から、突部のうち頭部の幅広になっている部分を折り曲げた状態で、頭部、胴部の順に突部を挿入させて、第2樹脂板23の端面部24を直角に突き合わせた。そして、頭部の両端部を折り曲げ前の状態に復帰させ、貫通孔では胴部が貫通するように、突部を貫通孔に挿入させて、接合構造体を形成した。
比較例2では、第1樹脂板21に孔部を設けるとともに、第2樹脂板23の端面部24の先端部に突部を設けた。次いで、第1樹脂板21の板面部22の孔部に、裏面の側から第2樹脂板23の端面部24の突部を挿入させて、第2樹脂板23の端面部24を直角に突き合わせた。その後、第1樹脂板21の板面部22の孔部から突出している第2樹脂板23の端面部24の突部を、熱溶融によってカシメ加工することで、第2樹脂板23の端面部24と第1樹脂板21の板面部22とを固定させた。
10、10A~10F 接合部
10a 接合部の裏面の入隅
21、21A~21D 第1樹脂板
22 第1樹脂板の板面部
22a 第1樹脂板の板面部(表面)
22b 第1樹脂板の板面部(裏面)
23 第2樹脂板
24 第2樹脂板の端面部
25、25A~25F 溶着凹部
26、26A~26F 溶着凹部の底面
27、27E、27F 肉盛部分
3 外装体付きワイヤハーネス
30 電線用外装体
30a~30c 折曲部
31 壁部
32 収容部
4 電線
40 ワイヤハーネス
5、5G、5H 溶着ホーン
51、51G、51H 溶着ホーンの先端部
t1 第1樹脂板の板厚寸法
t2 第2樹脂板の板厚寸法
t3 溶着凹部位置から測定したときの第1樹脂板の最小厚さ
t4 溶着凹部の底面位置で測定したときの第1樹脂の最小厚さ
U 超音波
X1 第2樹脂板の板厚方向
X2 電線の延在方向
Claims (11)
- 第1樹脂からなる第1樹脂板の板面部と、第2樹脂からなる第2樹脂板の端面部とを突き合わせた状態で溶着して形成した接合部を有する接合構造体であって、
前記第1樹脂が発泡樹脂であり、
前記第2樹脂が非発泡樹脂または発泡樹脂であり、
前記接合部は、表面に溶着凹部を有し、裏面の入隅に、前記第1樹脂と前記第2樹脂のうち少なくとも前記第1樹脂が溶融流動して固化して形成した肉盛部分を有する、接合構造体。 - 前記接合部は、前記溶着凹部の底面位置で測定したときの、前記第1樹脂の最小厚さが0.1mm以上2.0mm以下の範囲である、請求項1に記載の接合構造体。
- 前記接合部は、前記溶着凹部位置から測定したときの最小厚さが0.1mm以上である、請求項1または2に記載の接合構造体。
- 前記第1樹脂板の板面部と、前記第2樹脂板の端面部との突合せ角度は、鋭角側で測定して45°以上90°以下の範囲である、請求項1から3までのいずれか1項に記載の接合構造体。
- 前記第1樹脂および前記第2樹脂のうち一方または両方は、ポリプロピレン樹脂を含有する、請求項1から4までのいずれか1項に記載の接合構造体。
- 電線の外周に装着される電線用外装体であって、
請求項1から5のいずれか1項に記載の接合構造体を備える、電線用外装体。 - ワイヤハーネスと、請求項6に記載の電線用外装体とを備え、
前記電線用外装体が、前記ワイヤハーネスの外周に装着されている、外装体付きワイヤハーネス。 - 第1樹脂からなる第1樹脂板の板面部の裏面に、第2樹脂からなる第2樹脂板の端面部を突き合わせた状態で位置決め保持する位置決め工程と、
前記第1樹脂板の板面部と前記第2樹脂板の端面部とを突き合わせた状態で、前記第1樹脂板の板面部の表面側から溶着ホーンの先端部を押し当てる溶着ホーン押当工程と、
前記溶着ホーンから超音波を発振させて、前記第1樹脂板の板面部と前記第2樹脂板の端面部とを突き合わせた状態で溶着して接合部を形成する接合部形成工程と、
を含み、
前記第1樹脂が発泡樹脂であり、
前記第2樹脂が非発泡樹脂または発泡樹脂であり、
前記接合部は、表面に溶着凹部を有し、裏面の入隅に、前記第1樹脂と前記第2樹脂のうち少なくとも前記第1樹脂が溶融流動して固化して形成した肉盛部分を有する、接合構造体の製造方法。 - 前記溶着ホーンの先端部は、凸型突起状に形成されている、請求項8に記載の接合構造体の製造方法。
- 前記溶着ホーンの先端部は、表面の少なくとも一部が曲面状に形成されている、請求項8または9に記載の接合構造体の製造方法。
- 前記溶着ホーンの先端部は、表面の少なくとも一部が複数の凹凸で形成されている、請求項8から10までのいずれか1項に記載の接合構造体の製造方法。
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Citations (6)
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JPS5150374A (ja) * | 1974-10-29 | 1976-05-01 | Furukawa Electric Co Ltd | |
JPS59109317A (ja) * | 1982-12-15 | 1984-06-25 | Kodama Kagaku Kogyo Kk | 合成樹脂の熱溶着方法 |
JP2014051053A (ja) * | 2012-09-07 | 2014-03-20 | Gifu Plast Ind Co Ltd | 中空構造板の接合構造 |
JP2019013107A (ja) | 2017-06-30 | 2019-01-24 | 古河電気工業株式会社 | 電線用外装体及び外装体付きワイヤーハーネス |
JP2019179630A (ja) * | 2018-03-30 | 2019-10-17 | 株式会社オートネットワーク技術研究所 | ワイヤーハーネス及びワイヤーハーネスの製造方法 |
JP2020089041A (ja) | 2018-11-22 | 2020-06-04 | 古河電気工業株式会社 | 電線用外装体及び外装体付きワイヤーハーネス |
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JP4434347B2 (ja) * | 1998-12-21 | 2010-03-17 | 株式会社ファブリカトヤマ | 部分溶着された容器およびその製造方法 |
US8727844B2 (en) * | 2007-09-04 | 2014-05-20 | Nitto Denko Corporation | Ventilation member and method of manufacturing the same |
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JPS5150374A (ja) * | 1974-10-29 | 1976-05-01 | Furukawa Electric Co Ltd | |
JPS59109317A (ja) * | 1982-12-15 | 1984-06-25 | Kodama Kagaku Kogyo Kk | 合成樹脂の熱溶着方法 |
JP2014051053A (ja) * | 2012-09-07 | 2014-03-20 | Gifu Plast Ind Co Ltd | 中空構造板の接合構造 |
JP2019013107A (ja) | 2017-06-30 | 2019-01-24 | 古河電気工業株式会社 | 電線用外装体及び外装体付きワイヤーハーネス |
JP2019179630A (ja) * | 2018-03-30 | 2019-10-17 | 株式会社オートネットワーク技術研究所 | ワイヤーハーネス及びワイヤーハーネスの製造方法 |
JP2020089041A (ja) | 2018-11-22 | 2020-06-04 | 古河電気工業株式会社 | 電線用外装体及び外装体付きワイヤーハーネス |
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