JP2016175397A - Resin joined body, method for producing resin joined body, and structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a resin joined body formed by joining a thermoplastic resin molding and a thermosetting resin molding.SOLUTION: A resin joined body 10 is joined by fusing a thermoplastic resin molding 20, and a thermoplastic resin part 30 of a thermosetting resin molding 40, with the thermoplastic resin part 30 provided so as to be exposed on a part of the surface of the thermosetting resin molding 40. The thermoplastic resin part 30 has an anchor part embedded in the thermosetting resin molding 40, a joining part which is exposed on a part of the surface of the thermosetting resin molding 40 and is fused to the thermoplastic resin molding 20, and a connection part which connects the anchor part and the joining part. The joining part is fused to the thermoplastic resin molding 20.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a resin bonded body, a method for manufacturing a resin bonded body, and a vehicle structure.

  The use of plastic parts is expected to expand in the next-generation vehicle body. Therefore, establishment of the joining method of resin parts is an urgent task.

  In order to join fiber reinforced thermoplastic resins, a joining method is disclosed in which fiber reinforced thermoplastic resins are joined via a thermoplastic resin sheet disposed between fiber reinforced thermoplastic resins (for example, Patent Document 1). reference.).

  Also, for joining a resin part using a cured thermosetting resin and a resin part using a thermoplastic resin, bonding using an adhesive or fixing using a fastening member such as a rivet is generally used. is there.

  In addition, the fiber reinforced composite material board containing a thermosetting resin and a thermoplastic resin is known (for example, refer patent document 2).

  Further, a resin body made of resin B is bonded in advance to a part of the surface of the fiber reinforced resin A to form a resin body integrated preform, and the resin body integrated preform is placed in a mold. A method for producing a composite molded body in which insert molding is performed using the same resin as the resin B is disclosed (for example, see Patent Document 3).

JP 2014-077655 A JP 2008-230238 A JP 2013-028159 A

  However, the technique described in Patent Document 1 is used for joining thermoplastic resins exhibiting plasticity, and joining of a thermoplastic resin and a cured thermosetting resin that has already undergone a curing reaction and is difficult to plasticize. Not applicable to In addition, if a fastening member such as an adhesive or a rivet is used to join a resin part using a thermosetting resin cured product and a resin part using a thermoplastic resin, it contributes to an increase in mass or cost. Not desirable. In particular, when a thermoplastic resin and a thermosetting resin cured product are bonded using an adhesive, the strength of the bonding portion is determined by the strength of the adhesive, and thus the material strength of the resin part itself cannot be utilized. There is a case. Furthermore, the technique described in Patent Document 2 is applied to the production of a fiber-reinforced composite material plate using a thermoplastic resin and an uncured thermosetting resin, and the curing reaction has already been completed. It cannot be applied to the joining of a cured thermosetting resin and a thermoplastic resin. Further, the technique described in Patent Document 3 is not intended for joining resin parts.

  The present invention has been made in view of the above-described conventional problems, and is a resin bonded body in which a thermoplastic resin molded body and a thermosetting resin molded body are bonded without using a fastening member such as an adhesive or a rivet. It is another object of the present invention to provide a vehicle structure having the resin bonded body and a manufacturing method thereof.

  The resin joined body according to claim 1 includes a thermoplastic resin molded body, and the thermoplastic resin portion of the thermosetting resin molded body having a thermoplastic resin portion that is exposed and provided on a part of the surface. Joined by welding.

  According to the above configuration, the thermoplastic resin molded body and the thermosetting resin molded body are bonded by welding via the thermoplastic resin portion provided exposed on a part of the surface of the thermosetting resin molded body. ing. Therefore, a resin joined body in which the thermoplastic resin molded body and the thermosetting resin molded body are joined without using a fastening member such as an adhesive or a rivet is obtained.

  According to a second aspect of the present invention, there is provided the resin bonded body according to the first aspect, wherein the thermoplastic resin portion includes an anchor portion embedded in the thermosetting resin molded body and a surface of the thermosetting resin molded body. And a joining portion that is exposed to the thermoplastic resin molded body and is joined to the anchor portion and the joining portion, and the joining portion is welded to the thermoplastic resin molded body.

  According to the said structure, the anchor part by which the junction part exposed to a part of surface of a thermosetting resin molded object and welded with a thermoplastic resin molded object was embed | buried under the thermosetting resin molded object via the connection part. It is connected with. Therefore, the peeling strength of the thermoplastic resin part from the thermosetting resin molded body is improved, and the thermoplastic resin molded body and the thermoplastic resin part are welded to form the thermoplastic resin molded body and the thermosetting resin molded body. When bonded, the bonding strength between the thermoplastic resin molded body and the thermosetting resin molded body is improved.

  The resin bonded body according to claim 3 is the structure according to claim 1 or 2, wherein the thermoplastic resin molded body includes fibers.

  According to the above configuration, since the thermoplastic resin molded body includes fibers, the fibers contained in the thermoplastic resin molded body are in a state where the thermoplastic resin molded body and the thermoplastic resin portion are joined by welding. Enter. Therefore, the joint strength between the thermoplastic resin molded body and the thermosetting resin molded body through the thermoplastic resin portion is improved.

  The resin joined body according to claim 4 is the structure according to any one of claims 1 to 3, wherein the thermoplastic resin portion includes fibers.

  According to the above configuration, since the thermoplastic resin portion exposed and provided on a part of the surface of the thermosetting resin molded body contains fibers, the thermoplastic resin molded body and the thermoplastic resin portion are joined by welding. In the state, the fibers contained in the thermoplastic resin portion enter the thermoplastic resin molded body. Therefore, the joint strength between the thermoplastic resin molded body and the thermosetting resin molded body through the thermoplastic resin portion is improved.

  The resin joined body according to claim 5 is the structure according to any one of claims 1 to 4, wherein the thermosetting resin molded body has two or more thermoplastic resin portions.

  According to the said structure, since the joining location of a thermoplastic resin molded object and a thermosetting resin molded object is made into two or more places, the joining strength of a thermoplastic resin molded object and a thermosetting resin molded object improves. .

  The method for producing a resin joined body according to claim 6 provides a step of preparing a thermoplastic resin molded body, and a thermosetting resin molded body having a thermoplastic resin portion exposed to a part of the surface. And a step of welding the thermoplastic resin molded body and the thermoplastic resin portion to join the thermoplastic resin molded body and the thermosetting resin molded body.

  According to the above configuration, the thermoplastic resin molded body and the thermosetting resin molded body are joined by welding via the thermoplastic resin portion provided exposed on a part of the surface of the thermosetting resin molded body. The Therefore, the thermoplastic resin molded body and the thermosetting resin molded body can be joined without using a fastening member such as an adhesive or a rivet.

  According to a seventh aspect of the present invention, there is provided the method for producing a resin bonded body according to the sixth aspect, wherein the thermoplastic resin molded body includes fibers.

  According to the above configuration, since the thermoplastic resin molded body includes fibers, when the thermoplastic resin molded body and the thermoplastic resin portion are joined by welding, the fibers contained in the thermoplastic resin molded body are the thermoplastic resin portion. Enter. Therefore, the joint strength between the thermoplastic resin molded body and the thermosetting resin molded body through the thermoplastic resin portion is improved.

  The method for producing a resin bonded body according to claim 8 is the structure according to claim 6 or 7, wherein the thermoplastic resin portion includes fibers.

  According to the above configuration, since the thermoplastic resin portion exposed and provided on a part of the surface of the thermosetting resin molded body contains fibers, the thermoplastic resin molded body and the thermoplastic resin portion are joined by welding. Sometimes, fibers contained in the thermoplastic resin portion enter the thermoplastic resin molded body. Therefore, the joint strength between the thermoplastic resin molded body and the thermosetting resin molded body through the thermoplastic resin portion is improved.

  The method for producing a resin bonded body according to claim 9 is the structure according to any one of claims 6 to 8, wherein the thermosetting resin molded body has two or more thermoplastic resin portions. It is.

  According to the said structure, since the joining location of a thermoplastic resin molded object and a thermosetting resin molded object is made into two or more places, the joining strength of a thermoplastic resin molded object and a thermosetting resin molded object improves. .

  The method for producing a resin joined body according to claim 10 is the anchor portion in which the thermoplastic resin portion is embedded in the thermosetting resin molded body in the configuration according to any one of claims 6 to 9. And a joining portion that is exposed on a part of the surface of the thermosetting resin molding and is welded to the thermoplastic resin molding, and a connecting portion that connects the anchor portion and the joining portion.

  According to the said structure, the anchor part by which the junction part exposed to a part of surface of a thermosetting resin molded object and welded with a thermoplastic resin molded object was embed | buried under the thermosetting resin molded object via the connection part. It is connected with. Therefore, the peeling strength of the thermoplastic resin part from the thermosetting resin molded body is improved, and the thermoplastic resin molded body and the thermoplastic resin part are welded to form the thermoplastic resin molded body and the thermosetting resin molded body. When bonded, the bonding strength between the thermoplastic resin molded body and the thermosetting resin molded body is improved.

  The method for producing a resin bonded body according to claim 11 is the anchor portion in which the thermoplastic resin portion is embedded in the thermosetting resin molded body in the configuration according to any one of claims 6 to 9. And a protruding portion provided so as to protrude from the surface toward the surface of the thermosetting resin molded body from the anchor portion.

  According to the said structure, the protrusion part is provided so that it may protrude from the said surface toward the surface of a thermosetting resin molding from the anchor part embed | buried in the thermosetting resin molding. Therefore, when the thermoplastic resin molded body and the thermoplastic resin portion are welded to join the thermoplastic resin molded body and the thermosetting resin molded body, the tip of the protrusion comes into contact with the thermoplastic resin molded body. If the thermoplastic resin molded body and the thermoplastic resin part are welded in a state where the tip of the protruding part is in contact with the thermoplastic resin molded body, the tip of the protruding part easily generates heat, so the heat generation efficiency is improved and workability and weldability are improved. Will improve. Furthermore, since the thermoplastic resin portion has an anchor portion embedded in the thermosetting resin molded body, the peel strength of the thermoplastic resin portion from the thermosetting resin molded body is improved, and the thermoplastic resin molded body and the When the thermoplastic resin molded body and the thermosetting resin molded body are bonded to each other by welding the plastic resin portion, the bonding strength between the thermoplastic resin molded body and the thermosetting resin molded body is improved.

  The method for producing a resin bonded body according to claim 12 is the structure according to any one of claims 6 to 11, wherein the exposed portion of the thermoplastic resin portion of the surface of the thermosetting resin molded body is exposed. A groove is provided around the periphery.

  According to the above configuration, the groove portion is provided around the exposed portion of the thermoplastic resin portion on the surface of the thermosetting resin molded body, so that the thermoplastic resin molded body and the thermoplastic resin portion are welded and are thermoplastic. At least a part of a burr generated when the resin molded body and the thermosetting resin molded body are joined is filled in the groove. Therefore, the amount of burrs generated at the location where the thermoplastic resin molded body and the thermosetting resin molded body are joined is reduced, and a stronger welding is possible.

  A vehicle structure according to a thirteenth aspect includes the resin joined body according to any one of the first to fifth aspects.

  According to the above configuration, the thermoplastic resin molded body and the thermosetting resin molded body are joined by welding via the thermoplastic resin portion provided exposed on a part of the surface of the thermosetting resin molded body. Therefore, a vehicle structure having a resin joined body in which a thermoplastic resin molded body and a thermosetting resin molded body are joined without using a fastening member such as an adhesive or a rivet is obtained.

  According to the present invention, a resin bonded body in which a thermoplastic resin molded body and a thermosetting resin molded body are bonded without using a fastening member such as an adhesive or a rivet, a manufacturing method thereof, and a vehicle having the resin bonded body. A structure is provided.

It is sectional drawing which shows an example of the resin bonded body which concerns on this embodiment. It is sectional drawing for demonstrating the manufacturing method of the resin conjugate | zygote which concerns on 1st Embodiment. It is sectional drawing for demonstrating the modification of the manufacturing method of the resin joined body which concerns on 1st Embodiment. It is sectional drawing for demonstrating the manufacturing method of the resin joined body which concerns on 2nd Embodiment. It is sectional drawing for demonstrating the modification of the manufacturing method of the resin joined body which concerns on 2nd Embodiment. It is sectional drawing for demonstrating the manufacturing method of the resin joined body which concerns on 3rd Embodiment. It is sectional drawing for demonstrating the manufacturing method of the resin conjugate | zygote which concerns on 4th Embodiment.

  Hereinafter, embodiments of the resin joined body, the method for producing the resin joined body, and the vehicle structure of the present invention will be described in detail.

<Resin bonded body and manufacturing method thereof>
An embodiment of a resin bonded body will be described with reference to the drawings.
FIG. 1 is a cross-sectional view showing an example of a resin joined body according to the present embodiment. In FIG. 1, a thermoplastic resin molded body 20 is joined by welding to a thermoplastic resin portion 30 of a thermosetting resin molded body 40 having a thermoplastic resin portion 30 provided to be exposed on a part of the surface. The resin joined body 10 is configured.

  The thermoplastic resin which comprises the thermoplastic resin molding 20 is not specifically limited, Various well-known thermoplastic resins can be used according to the objective. Examples of the thermoplastic resin used in this embodiment include polycarbonate resin, polyamide (PA) resin, polyurethane (PU) resin, polyvinyl chloride resin, acrylonitrile-butadiene-styrene copolymer (ABS) resin, and polypropylene (PP). ) Resin. Among these, PA resin and PP resin are preferable.

  The thermoplastic resin constituting the thermoplastic resin portion 30 is not particularly limited, and various known thermoplastic resins can be used depending on the purpose. Examples of the thermoplastic resin used in this embodiment include polycarbonate resin, polyamide (PA) resin, polyurethane (PU) resin, polyvinyl chloride resin, acrylonitrile-butadiene-styrene copolymer (ABS) resin, and polypropylene (PP). ) Resin. Among these, PA resin and PP resin are preferable.

  The thermoplastic resin constituting the thermoplastic resin molded body 20 and the thermoplastic resin constituting the thermoplastic resin portion 30 may be of the same type or different types. In the present embodiment, the thermoplastic resin constituting the thermoplastic resin molded body 20 and the thermoplastic resin constituting the thermoplastic resin portion 30 are preferably the same type.

  The thermosetting resin molded body 40 is a cured product after thermosetting the thermosetting resin. The thermosetting resin used for formation of the said hardened | cured material is not specifically limited, According to the objective, various well-known thermosetting resins can be used. Examples of the thermosetting resin used in the present embodiment include vinyl ester resins, unsaturated polyester resins, phenol resins, epoxy resins, and urethane resins. Among these, an epoxy resin is preferable.

  The molding method of the thermoplastic resin molded body 20 is not particularly limited, and various known molding methods can be used depending on the purpose. Examples of the molding method used in the present embodiment include injection molding, extrusion molding, blow molding, and powder molding.

  The molding method of the thermosetting resin molded body 40 is not particularly limited. For example, the thermoplastic resin portion 30 is molded by injection molding, extrusion molding, blow molding, powder molding, calendar molding, lamination molding, or the like. Using the molded thermoplastic resin portion 30, the thermosetting resin molded body 40 in which the thermoplastic resin portion 30 is integrated can be molded by insert molding or the like.

  The thermoplastic resin molded body 20 may contain fibers. The kind of fiber used for the thermoplastic resin molding 20 is not particularly limited, and various known fibers can be used depending on the purpose. Examples of the types of fibers used in the thermoplastic resin molded body 20 include resin fibers such as aramid fibers, cellulose fibers, nylon fibers, vinylon fibers, polyester fibers, polyolefin fibers, rayon fibers, carbon fibers, glass fibers, and metal fibers. Etc. Among these, carbon fibers that can realize high mechanical strength are desirable.

  The thermoplastic resin part 30 may contain fibers. The kind of fiber used for the thermoplastic resin part 30 is not specifically limited, According to the objective, various well-known fibers can be used. Examples of the types of fibers used for the thermoplastic resin portion 30 include resin fibers such as aramid fibers, cellulose fibers, nylon fibers, vinylon fibers, polyester fibers, polyolefin fibers, and rayon fibers, carbon fibers, glass fibers, and metal fibers. Is mentioned. Among these, carbon fibers that can realize high mechanical strength are desirable.

  The thermosetting resin molded body 40 may contain fibers. The kind of fiber used for the thermosetting resin molding 40 is not particularly limited, and various known fibers can be used according to the purpose. Examples of the types of fibers used in the thermosetting resin molded body 40 include resin fibers such as aramid fibers, cellulose fibers, nylon fibers, vinylon fibers, polyester fibers, polyolefin fibers, and rayon fibers, carbon fibers, glass fibers, and metals. Examples include fibers. Among these, carbon fibers that can realize high mechanical strength are desirable.

  The state of the fiber used in the present embodiment is not particularly limited, and a fiber in a known state can be used depending on the purpose. Examples of the state of the fiber used in the present embodiment include a woven fabric and a non-woven fabric.

  The configuration of the thermoplastic resin portion 30 is not particularly limited. The sheet may be in the form of a sheet as shown in FIG. 1, the anchor portion embedded in the thermosetting resin molding, and a portion of the surface of the thermosetting resin molding that is exposed to the thermoplastic resin molding 20. It is good also as a structure which has the junction part welded and the connection part which connects an anchor part and a junction part, and the junction part is welded with the thermoplastic resin molded object 20. FIG. By configuring the thermoplastic resin portion 30 to have an anchor portion, a joint portion, and a connecting portion, the thermoplastic resin portion 30 is unlikely to be detached from the thermosetting resin molded body 40. Therefore, the peel strength of the thermoplastic resin part 30 from the thermosetting resin molded body 40 is improved, and the bonding strength between the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is improved.

  In the resin joined body according to the present embodiment, the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is not particularly limited. In FIG. 1, the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is one, but it may be two or more, and the required thermoplastic resin molded body 20 and thermosetting. The number of thermoplastic resin portions 30 can be selected in accordance with the bonding strength with the thermoplastic resin molded body 40.

The method for obtaining the thermoplastic resin molded body 20 or the thermoplastic resin portion 30 by combining the thermoplastic resin and the fiber is not particularly limited, and various known methods can be used depending on the purpose. . For example, a method in which a fiber is impregnated with a solution or melt of a thermoplastic resin, and if necessary, is dried and molded into a sheet, and a fiber and a thermoplastic resin film are alternately laminated and then heated and pressed. A method is mentioned.
The method for obtaining the thermosetting resin molded body 40 by combining the thermosetting resin and the fiber is not particularly limited, and various known methods can be used depending on the purpose. For the production of the thermosetting resin molded body 40, a prepreg in which a thermosetting resin and a fiber are combined may be used.

  Next, an embodiment of a method for producing a resin joined body will be described with reference to the drawings. In addition, below, the same code | symbol may be attached | subjected to the member same as embodiment of a resin joined body, and the overlapping description may be abbreviate | omitted. Moreover, the magnitude | size of the member in each figure is notional, The relative relationship of the magnitude | size between members is not limited to this.

  FIG. 2 is a cross-sectional view for explaining the method of manufacturing the resin joined body according to the first embodiment. In the method for producing a resin joined body according to the first embodiment, a thermoplastic resin molded body 20 and a thermosetting resin molded body 40 having a thermoplastic resin portion 30 provided to be exposed on a part of the surface are provided. Be prepared. The method for preparing the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is not particularly limited, and a process of joining the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 described later is performed. The practitioner may make the product himself or may obtain the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 by purchase or the like. The materials, methods, and the like used for producing the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 are as described above.

  In FIG. 2, the shape of the thermoplastic resin part 30 exposed and provided in a part of surface of the thermosetting resin molding 40 is a sheet form.

  In the method for manufacturing a resin joined body according to the first embodiment, the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 are welded to join the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 together. By doing so, the resin bonded body 10 is manufactured.

  The method of joining the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 by welding the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 is not particularly limited, and various known welds are used. The method can be used. Examples of the welding method that can be used in the present embodiment include ultrasonic welding, vibration welding, induction welding, high frequency welding, laser welding, thermal welding, and spin welding. Among these, ultrasonic welding and vibration welding are preferable.

  By using vibration welding as the welding method, the strength of the resin bonded body is further improved. On the other hand, the use of ultrasonic welding as the welding method increases the degree of freedom in design and structure of the thermoplastic resin molded body and the thermosetting resin molded body to be joined.

  In vibration welding, one of the thermoplastic resin molded body and the thermosetting resin molded body is heated while a load is applied to the thermoplastic resin molded body and the thermosetting resin molded body to be welded using a press machine or the like. In this method, the plastic resin molded body and the thermosetting resin molded body are vibrated in the horizontal direction with respect to the contact surfaces, and welding is performed using frictional heat generated thereby.

  On the other hand, in ultrasonic welding, the electrical energy is converted into vibration energy by an ultrasonic oscillator, and the vibration energy is applied to the contact surfaces of the thermoplastic resin molded body and the thermosetting resin molded body in contact with each other. This is a method of welding using frictional heat generated on the contact surface.

  In the method for manufacturing a resin joined body according to the first embodiment, the number of thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is not particularly limited. In FIG. 2, the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is one, but it may be two or more, and the required thermoplastic resin molded body 20 and thermosetting. The number of thermoplastic resin portions 30 can be selected in accordance with the bonding strength with the thermoplastic resin molded body 40.

  Further, by setting the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 to two or more, burrs (heat) generated when the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 are welded. Surplus thermoplastic resin generated when the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 are joined by welding) is interposed between the thermosetting resin molded body 40 and the thermoplastic resin molded body 20, The bonding strength between the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is further improved.

  Drawing 3 is a sectional view for explaining the modification of the manufacturing method of the resin joined object concerning a 1st embodiment. As shown in FIG. 3, the thermoplastic resin portion 30 may be provided so as to protrude from the surface of the thermosetting resin molded body 40.

  FIG. 4 is a cross-sectional view for explaining the method of manufacturing the resin joined body according to the second embodiment. In the method for manufacturing a resin joined body according to the second embodiment, the thermoplastic resin portion 30 includes an anchor portion 32 embedded in the thermosetting resin molded body 40 and a part of the surface of the thermosetting resin molded body 40. It is set as the structure which has the connection part 36 which connects the anchor part 32 and the junction part 34 which are exposed to the thermoplastic resin molded object 20, and is joined to the anchor part 32.

  In the method for manufacturing a resin bonded body according to the second embodiment, since the bonded portion 34 is connected to the anchor portion 32 embedded in the thermosetting resin molded body 40 via the connecting portion 36, the thermoplastic resin portion. 30 is not easily detached from the thermosetting resin molded body 40. Therefore, the peel strength of the thermoplastic resin part 30 from the thermosetting resin molded body 40 is improved, and the bonding strength between the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is improved.

  As a welding method in the method of manufacturing a resin joined body according to the second embodiment, ultrasonic welding and vibration welding are preferable, and vibration welding is more preferable.

  In the method for manufacturing a resin joined body according to the second embodiment, the number of thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is not particularly limited. In FIG. 4, the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is one, but it may be two or more, and the required thermoplastic resin molded body 20 and thermosetting. The number of thermoplastic resin portions 30 can be selected in accordance with the bonding strength with the thermoplastic resin molded body 40.

  Further, by setting the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 to two or more, burrs generated when the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 are welded are heated. It is interposed between the curable resin molded body 40 and the thermoplastic resin molded body 20, and the bonding strength between the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is further improved.

  FIG. 5 is a cross-sectional view for explaining a modification of the method for producing a resin joined body according to the second embodiment. As shown in FIG. 5, the joining portion 34 in the thermoplastic resin portion 30 may be provided so as to protrude from the surface of the thermosetting resin molded body 40.

  FIG. 6 is a cross-sectional view for explaining the method of manufacturing the resin joined body according to the third embodiment. In the method of manufacturing the resin joined body according to the third embodiment, the thermoplastic resin portion 30 includes an anchor portion 32 embedded in the thermosetting resin molded body 40, and the thermosetting resin molded body 40 from the anchor portion 32. It is set as the structure which has the protrusion part 38 provided so that it might protrude from the surface toward the surface.

  Therefore, when the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 are welded to join the thermoplastic resin molded body 20 and the thermosetting resin molded body 40, the tip of the protruding portion 38 is the thermoplastic resin molded body. 20 is contacted. When, for example, vibration welding is performed in a state where the tip of the protruding portion 38 is in contact with the thermoplastic resin molded body 20, the tip of the protruding portion 38 is likely to generate heat due to friction, so that the heat generation efficiency is improved. The molded body 20 is easily joined. Therefore, workability and weldability are improved.

  The area of the protrusion 38 when viewed from the direction orthogonal to the joint surface of the thermosetting resin molded body 40 with the thermoplastic resin molded body 20 is the same as that of the thermoplastic resin molded body 20 of the thermosetting resin molded body 40. The area is preferably smaller than the area of the anchor portion 32 when viewed from a direction orthogonal to the joint surface. By reducing the area of the protruding portion 38, for example, when performing vibration welding in a state where the tip of the protruding portion 38 is in contact with the thermoplastic resin molded body 20, the protruding portion 38 and the thermoplastic resin molded body 20 The contact pressure can be further increased, and the heat generation efficiency is further improved.

  Furthermore, since the thermoplastic resin part 30 has the anchor part 32 embedded in the thermosetting resin molded body 40, the thermoplastic resin part 30 is not easily detached from the thermosetting resin molded body 40. Therefore, the peel strength of the thermoplastic resin part 30 from the thermosetting resin molded body 40 is improved, and the bonding strength between the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is improved.

  In the method for manufacturing a resin joined body according to the third embodiment, the number of thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is not particularly limited. In FIG. 6, the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 is one, but it may be two or more, and the required thermoplastic resin molded body 20 and thermosetting. The number of thermoplastic resin portions 30 can be selected in accordance with the bonding strength with the thermoplastic resin molded body 40.

  By setting the number of the thermoplastic resin portions 30 provided in the thermosetting resin molded body 40 to two or more, burrs generated when welding the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 are thermosetting. It is interposed between the resin molded body 40 and the thermoplastic resin molded body 20, and the bonding strength between the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 is further improved.

  As a welding method in the method for producing a resin joined body according to the third embodiment, vibration welding is preferable.

  FIG. 7 is a cross-sectional view for explaining the method of manufacturing the resin joined body according to the fourth embodiment. In the method for manufacturing a resin joined body according to the fourth embodiment, a groove portion 42 is provided around the exposed portion of the thermoplastic resin portion 30 on the surface of the thermosetting resin molded body 40.

  The size of the groove 42 is not particularly limited. When the thermoplastic resin molded body 20 and the thermoplastic resin portion 30 are welded, the amount of burrs generated from the thermoplastic resin is estimated from the amount of the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 that is melted. By setting the volume of the groove 42 in accordance with the amount of burrs generated, most of the generated burrs are filled in the groove 42. Therefore, it is desirable because the amount of burrs generated at the place where the thermoplastic resin molded body 20 and the thermosetting resin molded body 40 are joined is further reduced.

  In the manufacturing method of the resin joined body according to the fourth embodiment, the thermoplastic resin portion 30 is configured to have the anchor portion 32 and the protruding portion 38, but the configuration of the thermoplastic resin portion 30 is particularly limited. is not.

<Vehicle structure>
The vehicle structure according to the present embodiment includes the resin joined body according to the present embodiment described above. The type of the vehicle structure according to the present embodiment is not particularly limited, and examples thereof include a side door, a hood, a roof, a back door, a luggage door, a bumper, and a crash box.

  In general, since the thermosetting resin molded body is superior in surface smoothness compared to the thermoplastic resin molded body, for example, when a door is formed as a vehicle structural body using the resin joined body according to the present embodiment It is preferable that the front side of the door is constituted by a thermosetting resin molded body of the resin joined body.

  According to the vehicle structure according to the present embodiment, a resin vehicle structure can be configured by combining suitable resin materials for each portion in accordance with required characteristics. Therefore, according to the vehicle structure according to the present embodiment, a next-generation vehicle that uses a plurality of types of resins (multi-materials) in combination can be realized.

  Hereinafter, the present embodiment will be described more specifically based on examples, but the present embodiment is not limited to the following examples.

(Preparation of specimen)
As a thermosetting resin, CFRP (continuous fiber prepreg material) 3K twill material manufactured by Toray Industries, Inc. was used. CFRTP (random material) manufactured by Toray Industries, Inc. was used as the thermoplastic resin.
-Preparation of thermoplastic resin molded body A thermoplastic resin molded body having a length of 100 mm, a width of 25 mm, and a thickness of 3 mm was formed using a thermoplastic resin.
-Preparation of thermosetting resin molded body Two thermoplastic resin portions having a length of 10 mm, a width of 5 mm, and a thickness of 3 mm were formed using a thermoplastic resin. The surface of the thermoplastic resin portion was subjected to corona discharge treatment.
Using the thermosetting resin and this thermoplastic resin portion, a precursor before curing of the thermosetting resin molded body is formed, heated in an oven at 135 ° C. for 2 hours, and then in an autoclave at 135 ° C. and 0.4 MPa. It heat-pressed for 2 hours on conditions, and the thermosetting resin molding was obtained. The size of the thermosetting resin molding was 100 mm in length, 25 mm in width, and 3 mm in thickness. At the end of the thermosetting resin molded body, two thermoplastic resin portions were arranged at intervals of 5 mm with the length direction parallel to the length direction of the thermosetting resin molded body. The amount of protrusion of the thermoplastic resin portion from the thermosetting resin molding was 1 mm.

(Vibration welding)
The obtained thermoplastic resin molded body and thermosetting resin molded body were stored for 10 days or more in a room controlled at 25 ± 2 ° C., and then subjected to a welding test.
Branson MICRO PPL (Nippon Emerson Corporation) was used as the vibration welder.
The thermoplastic resin molded body and the thermoplastic resin portion of the thermosetting resin molded body were brought into contact with each other, and vibration welding was performed to produce a resin joined body. As welding conditions, the vibration amplitude was 1.8 mm, the pressure was 0.75 MPa, and the penetration dimension was 1.0 mm.

(Shear strength measurement)
When a shear test was performed using Autograph AG-X100KN manufactured by Shimadzu Corporation, it was found that the shear strength was 21.9 MPa, indicating excellent bonding strength.

DESCRIPTION OF SYMBOLS 10 Resin joined body 20 Thermoplastic resin molded body 30 Thermoplastic resin part 32 Anchor part 34 Joint part 36 Connection part 38 Protrusion part 40 Thermosetting resin molded body 42 Groove part

Claims (13)

  A resin joined body in which a thermoplastic resin molded body and the thermoplastic resin portion of a thermosetting resin molded body having a thermoplastic resin portion provided exposed on a part of the surface are joined by welding.   The thermoplastic resin portion includes an anchor portion embedded in the thermosetting resin molded body, a joint portion that is exposed to a part of the surface of the thermosetting resin molded body and is welded to the thermoplastic resin molded body. The resin joined body according to claim 1, further comprising: a connecting portion that connects the anchor portion and the joined portion, wherein the joined portion is welded to the thermoplastic resin molded body.   The resin joined body according to claim 1, wherein the thermoplastic resin molded body includes a fiber.   The resin joined body according to any one of claims 1 to 3, wherein the thermoplastic resin portion includes fibers.   The resin joined body according to any one of claims 1 to 4, wherein the thermosetting resin molded body has two or more of the thermoplastic resin portions. Preparing a thermoplastic resin molded body;
A step of preparing a thermosetting resin molded body having a thermoplastic resin portion exposed and provided on a part of the surface;
Welding the thermoplastic resin molded body and the thermoplastic resin portion, and joining the thermoplastic resin molded body and the thermosetting resin molded body;
The manufacturing method of the resin joined body which has this.   The method for producing a resin joined body according to claim 6, wherein the thermoplastic resin molded body includes fibers.   The method for producing a resin joined body according to claim 6 or 7, wherein the thermoplastic resin portion includes fibers.   The method for producing a resin joined body according to any one of claims 6 to 8, wherein the thermosetting resin molded body has two or more of the thermoplastic resin portions.   The thermoplastic resin portion is an anchor portion embedded in the thermosetting resin molded body, and a joint portion exposed to a part of the surface of the thermosetting resin molded body and welded to the thermoplastic resin molded body. The manufacturing method of the resin joined body of any one of Claims 6-9 which has a connection part which connects the said anchor part and the said junction part.   The thermoplastic resin portion has an anchor portion embedded in the thermosetting resin molded body, and a protruding portion provided so as to protrude from the surface toward the surface of the thermosetting resin molded body from the anchor portion. The manufacturing method of the resin joined body of any one of Claims 6-9 which has these.   The manufacturing method of the resin joined body of any one of Claims 6-11 in which the groove part is provided in the circumference | surroundings of the exposed part of the said thermoplastic resin part of the surface of the said thermosetting resin molding. .   The vehicle structure which has the resin joined body of any one of Claims 1-5.