JP2021021448A - Coupling method for composite member - Google Patents

Abstract

To provide a coupling structure for a composite member capable of strongly coupling a plurality of members at least one of which consists of a thermoplastic crystalline polymeric material.SOLUTION: The present invention relates to a coupling structure for a composite member configured by integrally combining and coupling a plurality of members. The coupling structure comprises: a first member 1 consisting of a thermoplastic crystalline polymeric material where the heatproof temperature is 100°C or higher; a second member 2 which consists of the same kind or different kind of material as or from that of the first member 1 and is coupled with the first member; and a fitting projection 6 as coupling means which is formed from the same kind of material as that of the first member and fused to the first member and couples the first member and the second member. The first member includes a fitting recess 4 as an insertion space to which the fitting projection is inserted. The fitting projection is inserted from the side of the second member to the fitting recess which is provided in the first member, an outer peripheral surface 6a of the fitting projection and an inner peripheral surface 4a of the fitting recess which are brought into contact with each other are at least partially molten and fused to the first member, and the first member and the second member are coupled.SELECTED DRAWING: Figure 5

Description

The present invention relates to a bonded structure of a member made of a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher, or a composite member obtained by combining and bonding a member of this type and a member made of a metal material.

Conventionally, a technique for joining a member made of a synthetic resin and a member made of a metal different from the synthetic resin has been proposed (Patent Document 1).

The technique disclosed in Patent Document 1 is made of a synthetic resin arranged in a lower portion of a metal member by forming a through hole in a metal member overlapped with each other and irradiating a laser beam from the through hole. A member made of synthetic resin by heating and melting the joint surface of the member, pushing a connecting member made of a synthetic resin material having a high melting point into the melted portion, and naturally curing the melted portion. And a metal member are joined together.

Further, a joining structure of a composite member in which members made of two metal materials of different grades are joined by using a rivet made of the same kind of metal material as one member has been proposed (Patent Documents 2 and 3). .. In the joining structure disclosed in Patent Document 2, the shaft portion of the rivet is inserted into the other member, the two members to which the rivet is attached are overlapped, and the tip of the rivet and one member are joined by welding. .. The joining structure disclosed in Patent Document 3 forms a through hole opened at an abutting portion of one member of the other member superposed on one member, and a rivet is inserted into the through hole. By irradiating laser light from the head side of the rivet, the rivet and one member are laser welded, so that the other member is joined to the one member via the rivet.

The techniques disclosed in Patent Documents 2 and 3 suppress the generation of fragile intermetallic compounds generated when joining a joining member made of two metal materials of different grades, and improve the joining strength. That's what it was.

Japanese Unexamined Patent Publication No. 62-71624 JP-A-2015-62911 JP-A-2018-134655

The technique disclosed in Patent Document 1 is to push and bond a solid synthetic resin bonding member to a melted portion of a synthetic resin member, and superimpose and join the synthetic resin member and the metal member. It is not possible to firmly connect the members to each other.

The techniques disclosed in Patent Documents 1 and 2 are for joining members made of two metal materials of different grades, and a member made of a thermoplastic crystalline polymer material is used for at least one member. It's not a thing.

An object of the present invention is to provide a bonding structure of a composite member capable of firmly bonding a plurality of members whose at least one is made of a thermoplastic crystalline polymer material.

Further, the present invention provides a bonded structure of a composite member capable of producing a structure having a desired shape by appropriately combining and bonding members from a thermoplastic crystalline polymer material that is difficult to mold with sheet metal. The purpose is to provide.

Further, the present invention provides a bonding structure of a composite member capable of firmly integrating a member made of a thermoplastic crystalline polymer material and a metal member, for which it is difficult to obtain sufficient bonding strength. The purpose is.

It should be noted that another object of the present invention will be clarified from the description of the embodiment for carrying out the present invention, which will be described below with reference to the drawings.

The present invention proposed to achieve the above-mentioned object is the same as or different from the first member made of a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher, and the first member. A second member made of a material and bonded to the first member, formed of the same material as the first member, fused to the first member, and the first member and the said. It is a coupling structure of a composite member including a coupling means for coupling the second member, and the first member is provided with an insertion space into which the coupling means is inserted, and the first member and the first member are provided. The member 2 inserts the coupling means into the insertion space provided in the first member from the side of the second member, and the outer peripheral surface of the coupling means and the inner peripheral surface of the insertion space that come into contact with each other. It is characterized in that at least a part of the above is fused and bonded.

In particular, as the first bonding member, one made of a ketone-based synthetic resin is used. As the ketone-based synthetic resin constituting the first bonding member, any one of polyetherketone (PEK), polyetheretherketone (PEEK), and polyetherketoneketone (PEKK) is used.

The first bonding member includes polyamide 6 (PA6), polyamide 66 (PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), and liquid crystal polymer. It may be composed of any one of (LCT).

In the bonding structure of the composite member according to the present invention, the first member and the second member to be bonded to each other are made of the same type of polymer material, and the bonding means is a protrusion integrally formed with the second member. The insertion space of the coupling means is formed as a recess in the first member, and the first coupling member and the second member are overlapped by inserting the protrusion into the recess and inserted into the recess. It is characterized in that at least a part of the outer peripheral surface of the protrusion and the inner peripheral surface of the recess into which the protrusion is inserted is fused and joined.

In the bonding structure of the composite member according to the present invention, the first member and the second member are made of the same type of polymer material, and the bonding means is one surface side of a part of the second member. It is a protrusion formed integrally with the second member by a half punching process from the surface to the other surface, and the insertion space of the connecting means is formed in a part of the first member from one surface side to the other. The first member and the second member are recesses formed by half-cutting toward the surface of the surface, and the protrusion is inserted into the recess and overlapped, and the recess is inserted into the recess. It is characterized in that at least a part of the outer peripheral surface of the protrusion and the inner peripheral surface of the recess into which the protrusion is inserted is fused and joined.

In the combined structure of the composite member, the other surface of the first member is formed by half-cutting a part of the first member from one surface side toward the other surface to form a recess. The tip of the protruding portion protruding to the side is cut to form a flat surface continuous with the other surface of the first member.

In the bonding structure of the composite member according to the present invention, the first member and the second member are made of the same kind of polymer material, for example, a ketone synthetic resin, and the bonding means is the second member. It is a protrusion that is partially punched from one surface side toward the other surface to be integrally formed with the second member, and the insertion space of the connecting means is the first member. The first member and the second member are formed as a through hole, and the protrusion is inserted into the through hole and overlapped with the outer peripheral surface of the protrusion inserted into the through hole. It is characterized in that at least a part of the inner peripheral surface of the through hole into which the protrusion is inserted is fused and joined.

In the present invention, the first member and the second member are made of the same kind of polymer material, for example, a ketone synthetic resin, and the binding means is the same kind of polymer material as the first and second members. The insertion space of the connecting means is a through hole formed in a part of the first member from one surface side toward the other surface, and further, the above-mentioned shaft-shaped member. When combined with the first member, the second member is formed with a further through hole that communicates with the through hole formed in the first member, and the first member and the second member are formed. Is to insert the shaft-shaped member into the through-hole and the further through-hole that communicate with each other when the first member and the second member are combined, and the outer peripheral surface of the shaft-shaped member and the shaft-shaped member are formed. It is characterized in that at least a part of the inner peripheral surface of the inserted through hole and the further through hole is fused and bonded.

The present invention further includes a third member that is interposed and combined between the first member and the second member. The third member may be made of any one of a synthetic resin, metal, wood or paper material different from the first and second members. The third member was formed in the through hole formed in the first member and in the second member when the first member and the second member were interposed and combined. A through hole communicating with the further through hole is formed, and the third member is interposed between the first member and the second member to form the first, second and third members. The first, in which the shaft-shaped member is inserted into each through hole of the first, second, and third members communicating with each other, and at least the outer peripheral surface of the shaft-shaped member and the shaft-shaped member are inserted. It is characterized in that at least a part of the inner peripheral surface of the through hole of the member and the further through hole of the second member is fused and joined.

Further, in the present invention, the second member and the first member are formed of any one of different kinds of synthetic resin, metal, wood or paper material, and as the bonding means, a substantially columnar shape is used. A rivet formed of a polymer material of the same type as the first member having a shaft portion of the above and a conical head formed in a conical shape with a diameter reduced toward the shaft portion side on one end side of the shaft portion. Is used. The insertion space for the coupling means formed in the first member is a through hole formed in a part of the first member so as to penetrate from one surface side toward the other surface. When combined with the first member, the second member communicates with a through hole formed in the first member and has a conical head fitting into which the head of the rivet fits. A hole is formed. Then, the rivet is inserted and fitted from the through hole that communicates when the first member and the second member are combined to the head fitting hole, and at least the outer peripheral surface of the shaft portion of the rivet is fitted. And at least a part of the inner peripheral surface of the through hole into which the shaft portion of the rivet is inserted is fused to bond the first member and the second member.

In the present invention, with respect to the first member made of a crystalline polymer material having a heat resistance temperature of 100 ° C. or higher, a member made of a crystalline polymer material of the same type as the first member, or a first member. It is possible to firmly bond a second member made of any one of synthetic resin, metal, wood or paper material having a different grade from that of the member.

Further, the present invention provides a structure composed of a composite member having a desired form by appropriately combining and bonding members from a crystalline polymer material having thermoplasticity that is difficult to mold by processing a plate-shaped member. It is possible to manufacture.

Further, the present invention integrates a member made of a thermoplastic crystalline polymer material for which it is difficult to obtain sufficient bonding strength and a member made of any one of synthetic resin, metal, wood or paper material. Therefore, it is possible to obtain a composite member having increased mechanical strength.

Furthermore, the present invention has the first and second members made of a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher, which is excellent in weather resistance, chemical resistance and chemical resistance. By interposing the member of 3, it is possible to provide a composite member in which the third member is protected, deterioration over time is suppressed, and durability is improved.

Furthermore, the present invention can improve the degree of freedom of the grade of the member made of a crystalline polymer material having thermoplasticity and the member bonded to the member, and can form a composite member having various forms. ..

The advantages obtained by the present invention will be further clarified from the description of the embodiments for carrying out the present invention, which will be described below with reference to the drawings.

It is a perspective view which shows the part of the composite member which concerns on 1st Embodiment by disassembling. It is sectional drawing which shows a part of the 1st member and the 2nd member which constitute the composite member which concerns on 1st Embodiment. FIG. 5 is a cross-sectional view showing a state in which a fitting protrusion is fitted into a fitting recess and a first member and a second member are combined in the first embodiment. In the first embodiment, in a state where the first member and the second member are combined, the tip end portion of the protruding portion formed on the first member is cut and polished to form the other surface of the first member. It is sectional drawing which shows the state which is flush with. It is sectional drawing which shows the coupling structure of the composite member which concerns on 1st Embodiment. It is sectional drawing which shows the 1st member which comprises the composite member which concerns on 2nd Embodiment, and a part of the 2nd member. FIG. 5 is a cross-sectional view showing a state in which a fitting protrusion is fitted into a through hole and a first member and a second member are combined in the second embodiment. It is sectional drawing which shows the coupling structure of the composite member which concerns on 2nd Embodiment. It is a partial cross-sectional view which shows by disassembling the composite member which concerns on 3rd Embodiment. It is sectional drawing which shows the state which combined the 1st member, the 2nd member, and the shaft-shaped member in 3rd Embodiment. FIG. 5 is a cross-sectional view showing a state in which a first member and a second member are combined and connected by using a shaft-shaped member in the third embodiment. It is a partial cross-sectional view which shows by disassembling the composite member which concerns on 4th Embodiment. FIG. 5 is a cross-sectional view showing a state in which a third member is disclosed between a first member and a second member and combined using a shaft-shaped member in a fourth embodiment. It is sectional drawing which shows the coupling structure of the composite member which concerns on 4th Embodiment. It is a partial cross-sectional view which shows by disassembling the composite member which concerns on 5th Embodiment. FIG. 5 is a cross-sectional view showing a state in which a first member, a second member, and a rivet are combined in a fifth embodiment. FIG. 5 is a cross-sectional view showing a state in which a first member and a second member are combined and joined by using rivets in the fifth embodiment.

Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
(First Embodiment)
In the first embodiment of the present invention, as shown in FIG. 1, a composite member 3 formed by connecting a plate-shaped first member 1 and a plate-shaped second member 2 is formed. Regarding the bond structure.

In the present embodiment, the first member 1 and the second member 2 to be bonded to each other are made of the same type of thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher.

In the present embodiment, a ketone synthetic resin having a ketone group in its molecular structure is used as the crystalline polymer material having thermoplasticity. As the ketone synthetic resin, any of polyetherketone (PEK), polyetheretherketone (PEEK), and polyetherketoneketone (PEKK) can be used.

In particular, in this embodiment, polyetheretherketone (hereinafter, simply referred to as PEEK) was used. PEEK used in this embodiment has a heat resistance of at least 140 ° C. or higher and a crystallinity of about 35%.

The first member 1 made of PEEK is formed as, for example, a flat plate-like member having a thickness D ₁ of ₁ to 5 mm, and the second member 2 bonded to the first member is also made of PEEK and has a thickness. It is formed as a flat plate-like member having a D ₂ of 1 to 5 mm.

The first and second members 1 and 2 are selected to have an appropriate thickness in consideration of the strength and size of the composite member 3 formed by connecting the members 1 and 2.

Then, as shown in FIGS. 1 and 2, the first member 1 has a circular shape forming an insertion space into which the fitting protrusions 6 constituting the coupling means provided on the second member 2 are inserted and fitted. The fitting recess 4 of the above is formed.

In the present embodiment, as shown in FIG. 2, the fitting recess 4 is formed by performing a half punching process on a part of the first member 1. The half punching process is a processing method in which a part of the first member 1 is projected from one surface 1a side toward the other surface 1b side, and the half punching process of the first member 1 is performed. As shown in FIG. 2, a bottomed fitting recess 4 is formed on one surface 1a side, and a protrusion having a height corresponding to the depth of the fitting recess 4 is formed on the other surface 1b side. Part 5 is formed.

On the other hand, the second member 2 coupled to the first member 1 is formed with a cylindrical fitting protrusion 6 that fits into the fitting recess 4 formed in the first member 1. Similar to the fitting recess 4 formed in the first member 1, the fitting protrusion 6 is formed by half-cutting a part of the second member 2 to form one surface of the second member 2. It is formed so as to project from the 2a side to the other surface 2b side.

In the present embodiment, as shown in FIGS. 2 and 3, when the fitting protrusion 6 is fitted into the fitting recess 4, one surface 1a of the first member 1 and the second member 2 It is formed at a height H ₁ that is substantially the same as the depth D ₃ of the fitting recess 4 so that it can be brought into close contact with the other surface 2b.

Further, as shown in FIG. 3, the fitting protrusion 6 can be fitted in close contact with each other without forming a large gap between the outer peripheral surface 6a and the inner peripheral surface 4a of the fitting recess 4. As shown in the above, the fitting recess 4 is formed to have an outer peripheral diameter R _{2 which} is substantially the same as or slightly smaller than the inner peripheral diameter R ₁ . In this embodiment, the inner circumferential diameter R ₁ of the fitting recess 4 formed as approximately 4 mm, having an outer peripheral diameter R ₂ than the inner circumferential diameter of 0.02mm around a small diameter of the fitting recess 4 of the fitting protrusion 6 It is formed as a protrusion.

As shown in FIG. 3, the second member 2 is fitted by inserting the fitting protrusion 6 into the fitting recess 4, and the other surface 2b is overlapped with the one surface 1a of the first member 1.
The first member 1 and the second member 2 may be formed with one surface 1a and the other surface 2b, which are overlapped with each other, as smooth surfaces because they are closely and firmly bonded to each other. desirable.

Then, in a state where the fitting protrusion 6 is inserted into the fitting recess 4 and fitted, and the first member 1 and the second member 2 are overlapped with each other, the fitting protrusion 6 protrudes toward the other surface 1b of the first member 1. The protrusion 5 is cut or polished and flattened so as to be flush with the other surface 1b as shown in FIG.

With the other surface 1b of the first member 1 flattened, the laser beam L is irradiated from the other surface 1b side of the first member 1. At this time, as shown in FIG. 5, the energy of the laser beam L is concentrated between the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4, which are interface surfaces that are in contact with or close to each other. Condensate and irradiate as if.

The laser light L is sequentially condensed and irradiated over the entire circumference of the boundary surface between the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4. As a result, the surface layers of the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4 are melted. As shown in FIG. 5, the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4 are melted by melting the outer peripheral surface 6a of the fitting protrusion 6 and the fitting recess 4 Is fused with the inner peripheral surface 4a by the fusional portion 7, and the fitting protrusion 6 and the fitting recess 4 are coupled. By connecting the fitting protrusion 6 and the fitting recess 4, the first member 1 and the second member 2 are integrally connected.

By the way, the laser beam L is discretely focused and irradiated over the entire circumference of the boundary surface between the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4, and the fitting protrusion L is irradiated. The surface layers of the outer peripheral surface 6a of 6 and the inner peripheral surface 4a of the fitting recess 4 may be partially melted and fused.

In the present embodiment, the surface layers of the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4 that are inserted and fitted to each other are melted and fused to be bonded, so that the heat resistance is high. The first member 1 and the second member 2 made of a crystalline polymer material having a thermoplasticity having a temperature of 100 ° C. or higher can be reliably bonded.

In particular, in the present embodiment, only the surface layers of the outer peripheral surface 6a of the fitting protrusion 6 and the inner peripheral surface 4a of the fitting recess 4 that are inserted and fitted to each other are melted and joined. Since the insides of the second members 1 and 2 are not melted, the first and second members 1 and 2 are firmly formed without causing defects such as voids inside the members 1 and 2. Can be combined.

Further, in the present embodiment, the first member 1 and the second member 2 are connected by the relative connection between the fitting protrusion 6 formed by the half punching process and the bottomed fitting recess 4. , Can be combined with accurate alignment.

Furthermore, in the present embodiment, since the insertion space into which the fitting protrusion 6 is inserted and fitted is formed as the bottomed fitting recess 4, the second member in which the fitting recess 4 is formed is formed. Since the fused portion with the fitting protrusion 6 does not face the outside on the other surface 2b side of the 2, it is possible to prevent the appearance of the surface of the bonded composite member from being spoiled.

In the above-described embodiment, the first and second members 1 and 2 are formed of PEEK, which is a ketone-based synthetic resin, but as thermoplastic polymer materials, polyamide 6 (PA6) and polyamide 66 ( PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), or liquid crystal polymer (LCT) may be selected and used. Good. All of these polymer materials are crystalline polymer materials having a heat resistance of 100 ° C. or higher and a crystallinity of 20% to 70%.
(Second Embodiment)
Next, a second embodiment according to the present invention will be described with reference to the drawings.

The second embodiment has a connecting structure of a composite member 10 in which a plate-shaped first member 11 and a plate-shaped second member 12 are joined, as in the first embodiment. The first member 11 and the second member 12 to be bonded to each other are thermoplastic crystalline polymer materials having a heat resistant temperature of 100 ° C. or higher, as in the first embodiment described above. Formed by PEEK.

Also in the present embodiment, the first member 11 is formed as a flat plate-like member having an appropriate thickness having a thickness D ₂₁ of 1 to 5 mm, and is coupled to the first member 11. The member 12 is also formed as a flat plate-like member having an appropriate thickness having a thickness D ₂₂ of 1 to 5 mm.

Also in the present embodiment, the first and second members 11 and 12 have an appropriate thickness in consideration of the strength and size of the composite member 10 formed by connecting the members 11 and 12. Is selected.

Then, as shown in FIG. 6, the first member 11 is formed with an insertion space into which the fitting protrusion 16 constituting the coupling means provided on the second member 2 is inserted and fitted. In the present embodiment, the insertion space formed in the second member 12 is formed as a circular through hole 14.

The fitting protrusion 16 formed on the second member 12 coupled to the first member 11 is subjected to a half punching process on a part of the second member 12 as in the first embodiment. The second member 12 is formed so as to project from one surface 12a side to the other surface 12b side. In the present embodiment, the fitting protrusion 16 is formed so as to project toward the other surface 12b with an amount of protrusion corresponding to the thickness of the second member 12.

Further, the fitting protrusion 16 has an inner peripheral diameter R ₂₁ of the through hole 14 so that the fitting protrusion 16 can be closely fitted between the outer peripheral surface 16a and the inner peripheral surface 14a of the through hole 14 without forming a large gap. It is formed with an outer peripheral diameter R _{22 which} is substantially the same as or slightly smaller than the above diameter.

In the present embodiment, the inner peripheral diameter R ₂₁ of the through hole 14 is set to about 4 mm, and the outer peripheral diameter R ₂₂ of the fitting protrusion 16 is formed to be about 0.02 mm smaller than the inner peripheral diameter of the through hole 14. ing.

As shown in FIG. 7, the second member 12 inserts the fitting protrusion 16 into the through hole 14 so that the other surface 12b overlaps the one surface 11a of the first member 11.

In the present embodiment, when the fitting protrusion 16 is inserted into the through hole 14 and the first member 11 and the second member 12 are overlapped with each other, the fitting protrusion 16 of the through hole 14 is fitted. A recess 15 is formed in the formed portion. Therefore, in the present embodiment, the recess 15 is embedded with the embedded member 17 formed of PEEK of the same type as the first member 11. The buried member 17 has a circular shape having the same diameter as or slightly smaller than that of the recess 15, is formed with a thickness slightly larger than the depth of the recess 15, and is fitted into the recess 15 to fill the recess 15.

The portion of the buried member 17 protruding from the recess 15 is cut or polished and flattened so as to be flush with the other surface 11b as shown in FIG.

The buried member 17 is joined to the tip end portion of the fitting protrusion 16 with an adhesive, if necessary, in order to prevent easy detachment in the step of connecting the first member 11 and the second member 12.

Similar to the first embodiment, the present embodiment also emits laser light L from the other surface 11b side of the first member 11 in a state where the other surface 11b of the first member 11 is flattened. Irradiate. At this time, the laser beam L is applied to the outer peripheral surface 16a of the fitting protrusion 16 and the fitting recess 14 from between the outer peripheral surface 17a of the buried member 17 and the inner peripheral surface 15a of the recess 15 which is a boundary surface that is in contact with or close to each other. It is focused and irradiated so that energy is concentrated between the inner peripheral surface 14a and

Then, the laser beam L is emitted from the boundary surface between the outer peripheral surface 17a of the buried member 17 and the inner peripheral surface 15a of the recess 15 between the outer peripheral surface 16a of the fitting protrusion 16 and the inner peripheral surface 14a of the through hole 14. By sequentially condensing and irradiating the entire circumference of the boundary surface of the above, the outer peripheral surface 17a of the buried member 17, the surface layer of the inner peripheral surface 15a of the recess 15, and the outer peripheral surface 16a of the fitting protrusion 16 The surface layer of the inner peripheral surface 14a of the through hole 14 is melted. FIG. 8 shows that the surface layers of the outer peripheral surface 17a of the buried member 17, the inner peripheral surface 15a of the recess 15, the outer peripheral surface 16a of the fitting protrusion 16, and the surface layer of the inner peripheral surface 14a of the through hole 14 are melted. As shown, the fusion portion 18 is between the outer peripheral surface 17a of the buried member 17 and the inner peripheral surface 15a of the recess 15, and between the outer peripheral surface 16a of the fitting protrusion 16 and the inner peripheral surface 14a of the through hole 14. The embedded member 17 is coupled to the recess 15, and the fitting protrusion 16 and the through hole 14 are coupled to each other. By connecting the fitting protrusion 16 and the through hole 14, the first member 11 and the twelfth member 2 are integrally connected.

In the present embodiment, the buried member 17 is embedded in the through hole 14 into which the fitting protrusion 16 is inserted and fitted, but the buried member 17 is formed in the second member 12 without using the buried member 17. The fitting protrusion 16 may be formed at a height so as to protrude from the through hole 14 formed in the first member 11. In this case, the tip of the fitting protrusion 16 protruding from the through hole 14 is cut or polished to flatten the other surface 11b of the first member 11.

Further, the laser beam L is emitted from the boundary surface between the outer peripheral surface 17a of the embedded member 17 and the inner peripheral surface 15a of the recess 15 between the outer peripheral surface 16a of the fitting protrusion 16 and the inner peripheral surface 14a of the through hole 14. The surface layers of the inner peripheral surfaces 17a, 15a, 16a, and 14a may be melted by intensively condensing and irradiating the entire circumference of the boundary surface of the above.

In the present embodiment, since the surface layers of the outer peripheral surface 16a of the fitting protrusions 16 inserted and fitted to each other and the inner peripheral surface 14a of the through hole 14 are melted and bonded, the heat resistant temperature is set to 100 ° C. or higher. The first member 11 and the second member 12 made of a crystalline polymer material having thermoplasticity can be firmly and surely bonded to each other.

In particular, also in the present embodiment, since only the surface layers of the outer peripheral surface 16a of the fitting protrusions 16 inserted and fitted to each other and the inner peripheral surface 14a of the through hole 14 are melted and bonded, the first Since the inside of the member and the second member 11 and 12 is not melted, defects such as voids are not generated inside each member 11 and 12, so that the first and second members 11 are firmly formed. , 12 can be combined.

Further, in the present embodiment, the fitting protrusion 16 integrally formed with the second member 12 is inserted and fitted with the through hole 14 formed in the first member 11, and the first member 1 and the second member 1 and the second member Since the members 11 and 12 are connected, it is possible to perform accurate positioning and join them.

In the above-described embodiment, the first and second members 11 and 12 are formed of PEEK, which is a ketone-based synthetic resin. However, as in the above-mentioned first embodiment, the crystalline polymer having thermoplasticity is formed. As a material, any one of polyamide 6 (PA6), polyamide 66 (PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene terephthalate (PPS), polytetrafluoroethylene (PTFE), and liquid crystal polymer (LCT). It may be the one using 1. All of these polymer materials are crystalline polymer materials having a heat resistance of 100 ° C. or higher and a crystallinity of 20% to 70%.

Even when the first and second members 11 and 12 described above are formed of these materials, the same advantages as when PEEK is used can be obtained.
(Third Embodiment)
Next, a third embodiment according to the present invention will be described with reference to the drawings.

In the third embodiment, as in each of the above-described embodiments, as shown in FIGS. 9, 10, and 11, a plate-shaped first member 21 and a plate-shaped second member 21 are formed. The present invention relates to a connecting structure of a composite member 20 formed by connecting 22.

In the present embodiment, the first member 21 and the second member 22 to be bonded to each other are made of a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher, as in each of the above-described embodiments. It is formed by a certain PEEK.

Also in the present embodiment, the first member 21 is formed as a flat plate-shaped member having an appropriate thickness having a thickness D ₃₁ of 1 to 5 mm, and is coupled to the first member 21. 22 is also formed as a flat plate-like member having an appropriate thickness having a thickness D ₃₂ of 1 to 5 mm.

Also in the present embodiment, the first and second members 21 and 22 have an appropriate thickness in consideration of the strength and size of the composite member 20 formed by connecting these members 21 and 22. Is selected.

In the present embodiment, the first member 21 and the second member 22 are connected to the axial member 23 formed independently of the first and second members 21 and 22 as a coupling means. The shaft-shaped member 23 used in the present embodiment is formed in a shaft shape having the same diameter from one end side to the other end side. The shaft-shaped member 23 is formed of the first and second members and PEEK, which is a polymer material of the same type as 21 and 22.

The first member 21 is formed with a through hole 24 forming a coupling means insertion space into which the shaft-shaped member 23 is inserted, penetrating from one surface 21a side to the other surface 21b. Further, the second member 22 has a further through hole 25 into which the shaft-shaped member 23 is inserted so as to communicate with the through hole 24 formed in the first member 21 when combined with the first member 21. It is formed from one surface 22a side to the other surface 22b.

In the present embodiment, the through hole 24 and the further through hole 25 are formed in a cylindrical shape having the same inner peripheral diameter R ₃₂ .

The through hole 24 that communicates in series and the shaft-shaped member 23 that is inserted into the further through hole 25 are the same as the through holes 24 and 25 so as to be closely fitted to the inner peripheral surfaces of the through holes 24 and 25. It is formed in a columnar shape having an outer diameter R ₃₃ . Further, the shaft-shaped member 23 is formed with a length H ₃ corresponding to the thickness of the two first and second members 21 and 22 that are overlapped with each other. That is, when the shaft-shaped member 23 is inserted into the through holes 24 and 25 in which the first member 21 and the second member 22 are overlapped and communicate with each other, both end portions 23a and 23b of the first member 21 the other surface 21b and the one surface 22a substantially flush of the second member 22, or are formed with a length H ₃ slightly protruding.

Then, the shaft-shaped member 23 is inserted and fitted into a series of through holes 24 and further through holes 25 formed in the composite member 20 in which the first and second members 21 and 22 are laminated so as to be laminated. Will be done.

In the present embodiment, as shown in FIG. 10, in a state where the shaft-shaped member 23 is inserted and fitted into the through holes 24 and 25 which are communicated in series, the laser is used from the other surface 21b side of the first member 21. Light L is irradiated so that energy is concentrated on the boundary surface between the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 24a of the through hole 24 which is in close contact with the outer peripheral surface 23c.

The laser beam L is sequentially focused and irradiated over the entire circumference of the boundary surface where the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 24a of the through hole 24 are in close contact with each other. The outer peripheral surface 23c of the above and the surface layer of the inner peripheral surface 24a of the through hole 24 are melted, and as shown in FIG. 11, the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 24a of the through hole 24 are fused. It is fused by the attachment portion 26.

Next, the laser beam L is irradiated from one surface 22a side of the second member 22 so that energy is concentrated on the interface with the inner peripheral surface 25a of the through hole 25 which is in close contact with the outer peripheral surface 23c of the shaft-shaped member 23. To do.

The laser beam L is sequentially focused and irradiated over the entire circumference of the boundary surface where the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 25a of the through hole 25 are in close contact with each other, thereby irradiating the shaft-shaped member 23. The outer peripheral surface 23c of the above and the surface layer of the inner peripheral surface 25a of the through hole 25 are melted, and as shown in FIG. 11, the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 25a of the through hole 25 are fused. It is fused by the attachment portion 27.

Between the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 24a of the through hole 24 of the first member 21, the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surface 25a of the second member 22 through hole 25. The first member 21 and the second member 22 are joined via the shaft-shaped member 23 by being fused between the spaces by the fusion portions 26 and 27, respectively.

The coupling of the first member 21 and the second member 22 by the shaft-shaped member 23 simultaneously irradiates the laser beam L from the other surface 21b of the first member 21 and the one surface 22a of the second member 22. You may do it.

In the present embodiment, both end portions 23a and 23b of the shaft-shaped member 23 inserted and fitted into the through holes 24 and 25 of the first and second members 21 and 22 are cut and polished and flattened as necessary. And the appearance is adjusted.

In the present embodiment, in the first and second members 21 and 22, the portions on both ends 23a and 23b of the shaft-shaped member 23 are formed by the fused portions 26 and 27 to form the inner peripheral surfaces 24a of the through holes 24 and 25. It is easy to process because it is bonded by fusing to 25a.

Also in the present embodiment, the laser beam L is discretely collected over the entire circumference of the boundary surface between the outer peripheral surface 23c of the shaft-shaped member 23 and the inner peripheral surfaces 24a and 25a of the through holes 24 and 25. The outer peripheral surface 23c of the shaft-shaped member 23 and the surface layers of the inner peripheral surfaces 24a and 25a of the through holes 24 and 25 may be melted by irradiating with light.

In the present embodiment, of the through holes 24, 25 with the outer peripheral surface 23c of the shaft-shaped member 23 inserted and fitted into the through holes 24, 25 communicating with the series of the first and second members 21 and 22. Since the surface layers of the peripheral surfaces 24a and 25a are melted and bonded, the first member 21 and the second member 22 made of a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher are formed. Can be firmly and securely bonded.

Also in the present embodiment, the surface layers of the inner peripheral surfaces 24a and 25a of the through holes 24 and 25 are melted and bonded to the outer peripheral surface 23c of the shaft-shaped member 23 inserted and fitted into the through holes 24 and 25. Since the insides of the first and second members 21 and 22 are not melted, the first and second members are firmly formed without causing defects such as voids inside the members 21 and 2. Members 21 and 22 can be combined.

This embodiment has a larger thickness than each member used in each of the above-described embodiments by appropriately selecting the length of the shaft member 23 that connects the first and second members 21 and 22. Members can also be combined and combined.

In the above-described embodiment, the first and second members 21 and 22 are formed of PEEK, which is a ketone-based synthetic resin, but as in each of the above-described embodiments, as a crystalline polymer material having thermoplasticity. , Polyamide 6 (PA6), Polyamide 66 (PA66), Polyacetal (POM), Polybutylene terephthalate (PBT), Polyphenylene terephthalate (PPS), Polytetrafluoroethylene (PTFE), Liquid polymer (LCT). It may be the one used. Even when these materials are used, the same advantages as when PEEK is used can be obtained.
(Fourth Embodiment)
Next, a fourth embodiment according to the present invention will be described with reference to the drawings.

In the fourth embodiment, as shown in FIG. 12, the composite member 30 includes a third member 33 that is interposed and combined between the first member 31 and the second member 32 so as to be laminated. It is a combined structure of.

In the present embodiment, the first member 31 and the second member 32 are made of PEEK, which is a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher, as in each of the above-described embodiments. It is formed in a shape. The third member 33 is formed in a plate shape by any one of synthetic resin, metal, wood or paper material different from the first and second members 31 and 32.

In the present embodiment, the first member 31 is formed as a flat plate-like member having an appropriate thickness having a thickness D ₄₁ of 1 to 5 mm, and the second member 22 also has a thickness D ₄₂ of 1 to 5 mm. It is formed as a flat plate-like member having an appropriate thickness.

Also in the present embodiment, the first and second members 31 and 32 have an appropriate thickness in consideration of the strength and size of the composite member 30 formed by connecting the members 31 and 32. Is selected.

The third member 33 interposed between the first member 31 and the second member 32 is formed in a flat plate shape having a thickness D ₄₃ equal to or thinner than the first and second members 31 and 32. Has been done. It is desirable that the third member 33 be formed in a flat plate shape having a uniform thickness with high accuracy so as to be closely interposed between the first member 31 and the second member 32.

In the present embodiment, the first member 31 and the second member 32, which are laminated with the third member 33 sandwiched in the middle, are axial members 34 formed independently of the respective members 31, 32, 33. Is combined as a combining means. The shaft-shaped member 34 used in the present embodiment is formed in a shaft shape having the same diameter from one end side to the other end side. Further, the shaft-shaped member 34 is formed of the first and second members and PEEK, which is a polymer material of the same type as 31 and 32.

The first member 31 is formed with a through hole 35 forming a coupling means insertion space into which the shaft-shaped member 34 is inserted, penetrating from one surface 31a side to the other surface 31b. Further, the second member 32 has a further through hole 36 into which the shaft-shaped member 34 is inserted so as to communicate with the through hole 35 formed in the first member 31 when combined with the first member 31. It is formed from one surface 32a side to the other surface 32b.

Further, as shown in FIG. 13, the through hole 35 formed in the first member 31 when the third member 33 is intervened and combined between the first member 31 and the second member 32. And a through hole 37 that communicates with a further through hole 36 formed in the second member 32 is formed.

In the present embodiment, the through holes 35, 36, 37 formed in the first, second, and third members 31, 32, and 33, respectively, are formed in a cylindrical shape having the same inner peripheral diameter R _42. There is.

As shown in FIG. 13, the first, second and third members 31, 32, 33 have a third member 33 interposed between the first member 31 and the second member 32, respectively. Through holes 35, 36, 37 are combined so as to communicate in a series. Then, the shaft-shaped member 34 is inserted into the through holes 35, 36, 37 that communicate with each other in a series.

The shaft-shaped member 34 used in the present embodiment has an outer peripheral diameter R ₄₃ having the same diameter as the through holes 35, 35, 37 so as to be closely fitted to the through holes 35, 36, 37 that communicate with each other. It is formed in a columnar shape having. Further, the shaft-shaped member 34 is formed with a length H ₄ that is the same as or slightly larger than the thickness of the three first, second, and third members 31, 32, and 33 that are overlapped with each other. That is, when the shaft-shaped member 34 is inserted into the through holes 35, 36, 37 in which the first, second and third members 31, 32, 33 are overlapped and communicate with each other in a series, both end portions 34a, 34b Is formed to have a length H ₄ that is substantially flush with or slightly protrudes from the other surface 31b of the first member 31 and one surface 32a of the second member 32.

Then, as shown in FIG. 13, the shaft-shaped member 34 is a series formed in the composite member 30 which is superposed with the third member 33 interposed therebetween, between the first member 31 and the second member 32. It is inserted and fitted into the through holes 35, 36, 37 communicating with the above.

Then, as shown in FIG. 13, the laser beam L is inserted from the other surface 31b side of the first member 31 in a state where the shaft-shaped member 34 is inserted and fitted into the through holes 35, 36, 37 communicating in series. Is irradiated so that energy is concentrated on the interface with the inner peripheral surface 35a of the through hole 35 which is in close contact with the outer peripheral surface 34c of the shaft-shaped member 34.

The laser beam L is sequentially focused and irradiated over the entire circumference of the boundary surface where the outer peripheral surface 34c of the shaft-shaped member 34 and the inner peripheral surface 35a of the through hole 35 are in close contact with each other, thereby irradiating the shaft-shaped member 34. The outer peripheral surface 34c of the above and the surface layer of the inner peripheral surface 35a of the through hole 35 are melted, and as shown in FIG. 14, the outer peripheral surface 34c of the shaft-shaped member 34 and the inner peripheral surface 35a of the through hole 35 are fused. It is fused by the attachment portion 38.

Next, the laser beam L is irradiated from one surface 32a side of the second member 32 so that energy is concentrated on the interface with the inner peripheral surface 36a of the through hole 36 which is in close contact with the outer peripheral surface 34c of the axial member 34. To do.

The laser beam L is sequentially focused and irradiated over the entire circumference of the boundary surface where the outer peripheral surface 34c of the shaft-shaped member 34 and the inner peripheral surface 36a of the through hole 36 are in close contact with each other, thereby irradiating the shaft-shaped member 34. The outer peripheral surface 34c of the shaft member 34 and the surface layer of the inner peripheral surface 36a of the through hole 36 are melted, and as shown in FIG. 14, the outer peripheral surface 34c of the shaft-shaped member 34 and the inner peripheral surface 36a of the through hole 36 are fused. It is fused by the attachment portion 39.

Between the outer peripheral surface 34c of the shaft-shaped member 34 and the inner peripheral surface 35a of the through hole 35 of the first member 31, the outer peripheral surface 34c of the shaft-shaped member 34 and the inner peripheral surface 36a of the second member 32 through hole 36 The first member 31 and the second member 32 are connected to each other via the shaft-shaped member 34 by fusing between the two members.

The coupling of the first member 31 and the second member 32 by the shaft-shaped member 34 simultaneously irradiates the laser beam L from the other surface 31b of the first member 31 and the one surface 32a of the second member 32. You may do it.

In the present embodiment, the fusing portion 38 for fusing the shaft-shaped member 34 and the first member 31 and the fusing portion 39 for fusing the shaft-shaped member 34 and the second member 32 are the shaft-shaped members. As long as it is fused with a bonding strength between the 34 and the first member 31 and between the shaft-shaped member 34 and the second member 32 so as not to be easily peeled off, as shown in FIG. A part of the outer peripheral surface 34a on the one end 34a side and the other end 34b side of the shaft-shaped member 34 may be fused to the inner peripheral surface 36a of the through hole 36.

In the present embodiment, one surface 32a of the second member 32 facing one end 34a of the shaft-shaped member 34 connecting the first and second members 31, 32 and the other end 34b of the shaft-shaped member 34 face. The other surface 31a of the first member 31 is cut and polished and flattened as necessary to adjust the appearance.

In the present embodiment, the first member 31 and the second member 32 laminated on the upper and lower sides of the third member 33 made of a metal material are connected to one shaft-shaped member 34 and integrated, thereby being intermediate. Even in the case of the composite member 30 in which the third member 33, which is an intermediate member made of a metal material that is difficult to be fused with the polymer material or cannot be fused, is laminated, the respective members 31, 32, 33 are used. It can be combined in a integrally laminated state.

In the present embodiment, the first and second members 31 and 32 made of PEEK having excellent weather resistance and chemical resistance cover the third member 33 interposed as the intermediate member, and thus the metal. It is possible to suppress the occurrence of corrosion and rust of the third member 32 made of a material, suppress the aged deterioration of the composite member 30 using a metal material as a constituent member, and improve the durability.

In the composite member 30 according to the present embodiment, since the first and second members 31 and 32 are fused and integrated with the shaft-shaped member 34, the composite member 30 is between the first and second members 31 and 32. The third member 33 intervening in the shaft-shaped member 34 can be freely rotated by using the third member 33 as a coupling means.

In the above-described embodiment, the first and second members 31, 32 are formed of PEEK, which is a ketone-based synthetic resin, but as in each of the above-described embodiments, as a crystalline polymer material having thermoplasticity. , Polyamide 6 (PA6), Polyamide 66 (PA66), Polyacetal (POM), Polybutylene terephthalate (PBT), Polyphenylene terephthalate (PPS), Polytetrafluoroethylene (PTFE), Liquid polymer (LCT). It may be the one used. Even when these materials are used, the same advantages as when PEEK is used can be obtained.

Further, for the third member 33 interposed between the first and second members 31 and 32 made of PEEK, a metal made of an iron-based metal, aluminum, copper, an alloy of copper or the like is used. Furthermore, synthetic resins different from those of the first and second members 31 and 32 may be used, and paper materials such as wood or thick paper may be used.
(Fifth Embodiment)

Next, a fifth embodiment according to the present invention will be described with reference to the drawings.

In the fifth embodiment, as shown in FIGS. 15, 16 and 17, the first member 41 formed of PEEK, which is a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher. The present invention relates to a connecting structure of a composite member 40 formed by connecting a plate-shaped second member 42 formed of a metal material different from that of the first member 41.

Also in the present embodiment, the first member 41 is formed as a flat plate-like member having an appropriate thickness having a thickness D ₅₁ of 1 to 5 mm, and is a second member coupled to the first member 41. The 42 is also formed as a flat plate-like member having an appropriate thickness having a thickness D ₅₂ of 1 to 5 mm.

Also in the present embodiment, the first and second members 41 and 42 are not limited to the above-mentioned thickness, but the strength and size of the composite member 40 formed by connecting these members 41 and 42. An appropriate thickness is selected in consideration of the above.

In the present embodiment, the first member 41 and the second member 42 are joined by using a rivet 43 formed independently of the first and second members 41, 42 as a joining means.

As shown in FIG. 15, the rivet 43 has a substantially columnar shaft portion 44 and a truncated cone-shaped head 45 formed on one end side of the shaft portion 44 so as to reduce the diameter toward the shaft portion 44 side. It is formed of PEEK, which is a polymer material of the same type as the first member 41.

The first member 41 is formed with a through hole 46 as a coupling means insertion space into which the shaft portion 43 of the rivet 43 as the coupling means is inserted. The through hole 46 is formed through a part of the first member 41 from one surface 41a toward the other surface 41b. Further, when combined with the first member 41, the second member 42 communicates with the through hole 46 formed in the first member 41, and the head 45 of the rivet 43 fits into the head fitting. A rivet 47 is formed. The head fitting hole 47 is formed as a truncated cone-shaped through hole whose diameter is reduced from one surface 42a of the second member 42 toward the other surface 42b.

In the present embodiment, as shown in FIG. 16, the rivet 43 has a head fitting hole that communicates with a composite member 40 in which the first member 41 and the second member 42 are laminated with each other. It is inserted and fitted into the through hole 46 from 47. At this time, the rivet 43 is inserted into the through hole 46 from the head fitting hole 47 with the tip end portion 44a side of the shaft portion 44 as the insertion end.

By the way, in the present embodiment, when the rivet 43 is fitted from the head fitting hole 47 to the through hole 46, the head 45 is locked to the head fitting hole 47 and the shaft portion 44 The tip portion 44a is formed so as to be substantially flush with or slightly projecting from the other surface 41b of the first member 41. Further, the shaft portion 44 is formed in a columnar shape having an outer peripheral diameter R ₅₃ having the same diameter as the through hole 46 so as to be closely fitted to the inner peripheral surface 46a of the through hole 46.

Then, as shown in FIG. 16, when the rivet 43 is inserted and fitted into the through hole 46 from the head fitting hole 47 communicating with the series of composite members 40, the shaft portion 44 penetrates the outer peripheral surface 44c thereof. It is closely fitted to the inner peripheral surface 46a of 46, and the head 45 is attached in a state of being locked in the head fitting hole 47.

In the present embodiment, as shown in FIG. 16, in a state where the rivet 43 is inserted and fitted into the through hole 46 from the head fitting hole 47 communicating with the series of composite members 40, the other of the first members 41. The laser beam L is irradiated from the surface 41b side of the rivet 43 so that energy is concentrated on the interface between the outer peripheral surface 44c of the shaft portion 44 of the rivet 43 and the inner peripheral surface 46a of the through hole 46 which is in close contact with the outer peripheral surface 44c. The laser beam L is sequentially focused and irradiated over the entire circumference of the boundary surface where the outer peripheral surface 44c of the shaft portion 44 and the inner peripheral surface 46a of the through hole 46 are in close contact with each other, so that the shaft portion made of PEEK is irradiated. The outer peripheral surface 44c of the 44 and the surface layer of the inner peripheral surface 46a of the through hole 46 are melted, and as shown in FIG. 17, the outer peripheral surface 44c of the shaft portion 44 and the inner peripheral surface 46a of the through hole 46 are fused. It is fused by the attachment portion 48. Then, the rivet 43 is coupled to the first member 41 by fusing between the outer peripheral surface 44c of the shaft portion 44 and the inner peripheral surface 46a of the through hole 46 via the fusing portion 48.

Then, the shaft portion 44 of the rivet 43 is coupled to the first member 41, so that the second member 42 in which the head portion 45 of the rivet 43 is fitted into the head fitting hole 47 is the shaft of the rivet 43. The first member 41 to which the portion 44 is connected and the head 45 of the rivet 43 are sandwiched and integrated. At this time, in the second member 42, the head 45 of the truncated cone-shaped rivet 43 corresponding to this shape is fitted and locked to the truncated cone-shaped head fitting 47. 1 is positioned and supported with respect to the member 41.

In the above-described embodiment, the first member 41 and the rivet 43 are formed of PEEK, which is a ketone-based synthetic resin. Polyamide 6 (PA6) and polyamide 66 (PA66) are used as thermoplastic crystalline polymer materials. , Polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfard (PPS), polytetrafluoroethylene (PTFE), or liquid crystal polymer (LCT) may be used.

Further, as the second member 42 integrated with the first member 41 via the rivet 43, a metal made of an iron-based metal, aluminum, copper, an alloy of copper, or the like can be used. Further, the second member 42 may be made of a synthetic resin different from that of the first member 41, or may be made of a paper material such as wood or cardboard.

By using this embodiment, a second member made of a material such as welding that is difficult to bond directly to a first member 41 made of a thermoplastic crystalline polymer material that is difficult to bond with each other. Can be combined and integrated.

Further, since the composite member 40 according to the present embodiment can be combined and integrated with the rivet 43 as a coupling means fused to the first member 41 without fixing the second member 42. The second member 42 can be freely rotated with respect to the first member 41 with the rivet 43 as the rotation axis.

The present invention relates to a method for joining a member made of a thermoplastic crystalline polymer material or a composite member obtained by combining and joining a member made of this kind of member and a member made of a metal material.

The present invention proposed to achieve the above-mentioned object comprises a first member made of a thermoplastic crystalline polymer material and a material of the same type or different from that of the first member. The second member to be bonded to the member is formed of the same material as the first member, fused to the first member, and the first member and the second member are bonded to each other. and coupling means, said provided first member, a coupling method of a composite member having an insertion space in which the coupling means is inserted, said first member and said second member, said coupling The means are inserted into the insertion space from the second member side and combined, and then by irradiation with laser light , at least the outer peripheral surface of the coupling means inserted into the insertion space and the inner peripheral surface of the insertion space. It is characterized in that a part is fused and bonded.

In particular, as the first member , a member made of a ketone-based synthetic resin is used. As the ketone-based synthetic resin constituting the first member , any one of polyetherketone (PEK), polyetheretherketone (PEEK), and polyetherketoneketone (PEKK) is used.

The first member includes polyamide 6 (PA6), polyamide 66 (PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), and liquid crystal polymer (PTFE). It may be composed of any one of LCP ).

In the method for connecting composite members according to the present invention, the first member and the second member to be bonded to each other are made of the same type of polymer material, and the bonding means is a protrusion integrally formed with the second member. , and the insertion space of the coupling means is formed as a recess in the first member, the first member and the second member, by inserting the protruding portion into the concave combined are mutually superimposed, Next, by irradiation with a laser beam, at least a part of the outer peripheral surface of the protrusion inserted into the recess and the inner peripheral surface of the recess into which the protrusion is inserted are fused and bonded. To do.

In the method for connecting composite members according to the present invention, the first member and the second member are made of the same type of polymer material, and the bonding means is one surface side of a part of the second member. It is a protrusion formed integrally with the second member by a half punching process from one surface to the other, and the insertion space of the connecting means is formed in a part of the first member from one surface side to the other. a recess formed by half die cutting towards the surface, the first member and the second member, the projection is combined superimposed with each other is inserted into the recess, then, the laser beam It is characterized in that at least a part of the outer peripheral surface of the protrusion inserted into the recess and the inner peripheral surface of the recess into which the protrusion is inserted are fused and joined by the irradiation .

In the combined structure of the composite member, a part of the first member is half-cut from one surface side toward the other surface to form a recess, whereby the other of the first member. The tip of the protruding portion protruding toward the surface side of the first member is cut to form a flat surface continuous with the other surface of the first member.

In the method for connecting composite members according to the present invention, the first member and the second member are made of the same type of polymer material, and the bonding means is one surface side of a part of the second member. It is a protrusion formed integrally with the second member by performing a half punching process from the surface to the other surface, and the insertion space of the connecting means is formed as a through hole in the first member. The first member and the second member are combined by inserting the protrusion into the through hole and superimposing the protrusion on each other, and then by irradiating a laser beam, the protrusion of the protrusion is inserted into the through hole. It is characterized in that at least a part of the outer peripheral surface and the inner peripheral surface of the through hole into which the protrusion is inserted is fused and joined.

In the present invention, the first member and the second member are made of the same kind of polymer material, and the binding means is made of a shaft-shaped member made of the same kind of polymer material as the first and second members. The insertion space of the coupling means is a through hole formed in a part of the first member from one surface side toward the other surface, and further, the second member has a through hole. When combined with the first member, a further through hole is formed that communicates with the through hole formed in the first member, and the first member and the second member are overlapped with each other. The shaft-shaped member is inserted into the through-hole and the further through-hole that communicate with each other when combined, and then the outer peripheral surface of the shaft-shaped member and the shaft-shaped member are subjected to irradiation with laser light. It is characterized in that at least a part of each inner peripheral surface of the inserted through hole and the further through hole is fused and bonded.

The present invention further relates to any one of a synthetic resin, metal, wood or paper material different from the first and second members, which are intervened and combined between the first member and the second member. It has a third member made of 1, and when the third member is intervened and combined between the first member and the second member, the third member is formed into the first member. A through hole is formed in communication with the through hole and the further through hole formed in the second member, and the first, second and third members are formed of the first member and the second member. The axial member is inserted into each through hole of the first, second, and third members communicating with each other while superimposing and combining the third member with the third member interposed therebetween , and then irradiation with laser light. As a result, at least a part of the outer peripheral surface of the shaft-shaped member, the through hole of the first member into which the shaft-shaped member is inserted, and the inner peripheral surface of each further through hole of the second member are fused. It is characterized by being combined.

In the present invention, the second member, said first member a heterologous synthetic resin, metal, made from any one of the wood or paper material, said coupling means includes a substantially cylindrical shaft portion A rivet formed of a polymer material of the same type as the first member having a conical head formed with a diameter reduced toward the shaft portion is used on one end side of the shaft portion. The insertion space of the connecting means formed in the first member is a through hole formed in a part of the first member so as to penetrate from one surface side toward the other surface. Further, the second member has a conical head that communicates with the through hole formed in the first member and the head of the rivet fits into the second member when combined with the first member. A fitting hole is formed. Then, the first member and the second member, the rivet is inserted fitted over the through-hole and the head portion fitting hole communicating when combined mutually superimposed, then the laser beam By irradiation, at least a part of the outer peripheral surface of the shaft portion of the rivet and the inner peripheral surface of the through hole into which the shaft portion of the rivet is inserted is fused and bonded .

In the present invention, with respect to the first member made of a crystalline polymer material having thermoplasticity for which it is difficult to obtain sufficient bonding strength, a member made of a crystalline polymer material of the same type as the first member, It is possible to firmly bond the second member made of any one of synthetic resin, metal, wood or paper material having a different grade from the first member.

In the above-described embodiment, the first and second members 1 and 2 are formed of PEEK, which is a ketone-based synthetic resin, but as a thermoplastic crystalline polymer material, polyamide 6 (PA6) and polyamide 66 ( PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), liquid crystal polymer ( LCP ), even if one of them is selected and used. Good. All of these polymer materials are crystalline polymer materials having a heat resistance of 100 ° C. or higher and a crystallinity of 20% to 70%.

In the above-described embodiment, the first and second members 11 and 12 are formed of PEEK, which is a ketone-based synthetic resin. However, as in the above-mentioned first embodiment, the crystalline polymer having thermoplasticity is formed. As a material, any one of polyamide 6 (PA6), polyamide 66 (PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene terephthalate (PPS), polytetrafluoroethylene (PTFE), and liquid crystal polymer ( LCP ). It may be the one using 1. All of these polymer materials are crystalline polymer materials having a heat resistance of 100 ° C. or higher and a crystallinity of 20% to 70%.

In the above-described embodiment, the first and second members 21 and 22 are formed of PEEK, which is a ketone-based synthetic resin, but as in each of the above-described embodiments, as a crystalline polymer material having thermoplasticity. , Polyamide 6 (PA6), Polyamide 66 (PA66), Polyacetal (POM), Polybutylene terephthalate (PBT), Polyphenylene terephthalate (PPS), Polytetrafluoroethylene (PTFE), Liquid crystal polymer ( LCP ). It may be the one used. Even when these materials are used, the same advantages as when PEEK is used can be obtained.

In the above-described embodiment, the first and second members 31, 32 are formed of PEEK, which is a ketone-based synthetic resin, but as in each of the above-described embodiments, as a crystalline polymer material having thermoplasticity. , Polyamide 6 (PA6), Polyamide 66 (PA66), Polyacetal (POM), Polybutylene terephthalate (PBT), Polyphenylene terephthalate (PPS), Polytetrafluoroethylene (PTFE), Liquid crystal polymer ( LCP ). It may be the one used. Even when these materials are used, the same advantages as when PEEK is used can be obtained.

In the above-described embodiment, the first member 41 and the rivet 43 are formed of PEEK, which is a ketone-based synthetic resin. Polyamide 6 (PA6) and polyamide 66 (PA66) are used as thermoplastic crystalline polymer materials. , Polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), or liquid crystal polymer ( LCP ) may be used.

The present invention proposed to achieve the above-mentioned object is composed of a first member made of a thermoplastic crystalline polymer material and a material of the same type as the first member, and the first member. A second member to be bonded to the first member and a bond formed of the same material as the first member, fused to the first member, and bonded to the first member and the second member. The means and the insertion space provided in the first member into which the connecting means is inserted are provided, and the connecting means has a part of the second member and one surface of the second member. It is a protrusion formed integrally with the second member by performing a half punching process from the side toward the other surface, and the first member and the second member insert the protrusion into the protrusion. combined are overlapped with each other and inserted into the space, then by irradiation with a laser beam, at least a portion of the inner peripheral surface of the outer peripheral surface of the inserted the protruding portion into the insertion space and the insertion space is fused It is characterized by being combined. (Amendment claim 1)

Further, the present invention comprises a first member made of a thermoplastic crystalline polymer material and any one of a synthetic resin, metal, wood or paper material different from the first member, and the first member . A second member to be bonded to the first member, a coupling means formed of the same material as the first member, and connecting the first member and the second member, and the first member. It is provided with an insertion space in which the connecting means is inserted. As the connecting means, a rivet having a substantially columnar shaft portion and a conical head formed on one end side of the shaft portion with a diameter reduced toward the shaft portion side is used. Then, the insertion space of the connecting means formed in the first member is formed through a part of the first member from one surface side of the first member toward the other surface. The through hole is formed, and when combined with the first member, the second member communicates with the through hole formed in the first member and the head of the rivet is fitted. A conical head fitting hole is formed. And. The first member and the second member are inserted and fitted with the rivet over the through hole and the head fitting hole that communicate with each other when they are overlapped and combined, and then by irradiation with laser light. , The outer peripheral surface of the shaft portion of the rivet and at least a part of the inner peripheral surface of the through hole into which the shaft portion of the rivet is inserted are fused and joined.

The present invention proposed to achieve the above-mentioned object is composed of a first member made of a thermoplastic crystalline polymer material and a material of the same type as the first member, and the first member. A second member to be bonded to the first member and a bond formed of the same material as the first member, fused to the first member, and bonded to the first member and the second member. The means and the insertion space provided in the first member into which the connecting means is inserted are provided, and the connecting means has a part of the second member and one surface of the second member. It is a protrusion formed integrally with the second member by performing a half punching process from the side toward the other surface, and the first member and the second member insert the protrusion into the protrusion. combined are overlapped with each other and inserted into the space, then by irradiation with a laser beam, at least a portion of the inner peripheral surface of the outer peripheral surface of the inserted the protruding portion into the insertion space and the insertion space is fused It is characterized by being combined.

Claims (10)

A first member made of a thermoplastic crystalline polymer material having a heat resistant temperature of 100 ° C. or higher,
A second member made of the same or different material as the first member and coupled to the first member.
It is provided with a coupling means which is formed of the same material as the first member, fuses with the first member, and connects the first member and the second member.
The first member is provided with an insertion space into which the connecting means is inserted.
The first member and the second member insert the coupling means into the insertion space provided in the first member from the side of the second member, and the outer peripheral surface of the coupling means that comes into contact with each other. A coupling structure of a composite member, characterized in that at least a part of the inner peripheral surface of the insertion space is fused and bonded. The bonding structure of the composite member according to claim 1, wherein the first member is a ketone-based synthetic resin. The first member includes polyamide 6 (PA6), polyamide 66 (PA66), polyacetal (POM), polybutylene terephthalate (PBT), polyphenylene sulfide (PPS), polytetrafluoroethylene (PTFE), and liquid crystal polymer (LCT). ), The connecting structure of the composite member according to claim 1. The first member and the second member are made of the same kind of polymer material.
The connecting means is a protrusion integrally formed with the second member.
The insertion space of the connecting means is formed as a recess in the first member.
The first member and the second member are overlapped by inserting the protrusion into the recess, and the outer peripheral surface of the protrusion inserted into the recess and the recess into which the protrusion is inserted. The coupling structure of a plurality of members according to any one of claims 1 to 3, wherein at least a part of the inner peripheral surface is fused and bonded. The first member and the second member are made of the same kind of polymer material.
The connecting means is a protrusion formed integrally with the second member by half-cutting from one surface side toward the other surface on a part of the second member.
The insertion space of the connecting means is a recess formed in a part of the first member by a half punching process from one surface side toward the other surface.
The first member and the second member are overlapped by inserting the protrusion into the recess, and the outer peripheral surface of the protrusion inserted into the recess and the recess into which the protrusion is inserted. The coupling structure of a composite member according to any one of claims 1 to 3, wherein at least a part of the inner peripheral surface is fused and bonded. A part of the first member is half-cut from one surface side toward the other surface to form a recess, so that the protrusion protrudes toward the other surface side of the first member. The coupling structure of a composite member according to claim 5, wherein the tip end portion of the portion is cut to form a flat surface continuous with the other surface of the first member. The first member and the second member are made of the same kind of polymer material.
The connecting means is a protrusion formed integrally with the second member by half-cutting a part of the second member from one surface side toward the other surface.
The insertion space of the connecting means is formed as a through hole in the first member.
The first member and the second member are overlapped by inserting the protrusion into the through hole, and the outer peripheral surface of the protrusion inserted into the through hole and the protrusion into which the protrusion is inserted. The coupling structure of a composite member according to any one of claims 1 to 3, wherein at least a part of the inner peripheral surface of the through hole is fused and bonded. The first member and the second member are made of the same kind of polymer material.
The bonding means comprises a shaft-shaped member made of a polymer material of the same type as the first and second members.
The coupling means insertion space is a through hole formed through a part of the first member from one surface side toward the other surface.
Further, the second member is formed with a further through hole that communicates with the through hole formed in the first member when combined with the first member.
In the first member and the second member, the shaft-shaped member is inserted into the through hole and the further through hole that communicate with each other when the first member and the second member are combined, and the shaft The composite member according to claim 1, wherein at least a part of the outer peripheral surface of the shaped member, the through hole into which the shaft-shaped member is inserted, and the inner peripheral surface of the further through hole are fused and joined. Combined structure. Further, the first and second members, which are intervened and combined between the first member and the second member, are made of any one of different kinds of synthetic resin, metal, wood, or paper material. Has 3 members
The third member was formed in the through hole formed in the first member and in the second member when the first member and the second member were interposed and combined. A through hole is formed that communicates with the further through hole,
In the first, second and third members, the third member is interposed between the first member and the second member to form the first, second and third members. The first, in which the shaft-shaped member is inserted into each through hole of the first, second, and third members communicating with each other, and at least the outer peripheral surface of the shaft-shaped member and the shaft-shaped member are inserted. The coupling structure of the composite member according to claim 8, wherein at least a part of the inner peripheral surface of the through hole of the member and the further through hole of the second member is fused and joined. The second member is made of any one of a synthetic resin, metal, wood or paper material different from that of the first member.
The connecting means is of the same type as the first member having a substantially columnar shaft portion and a conical head formed on one end side of the shaft portion with a diameter reduced toward the shaft portion side. A rivet made of a polymer material
The insertion space of the connecting means is a through hole formed through a part of the first member from one surface side toward the other surface.
Further, the second member has a conical head that communicates with a through hole formed in the first connecting member and into which the head of the rivet fits when combined with the first member. A fitting hole is formed
The rivet is inserted and fitted over the through hole and the head fitting hole that communicate with each other when the first member and the second member are combined.
At least a part of the outer peripheral surface of the shaft portion of the rivet and the inner peripheral surface of the through hole into which the shaft portion of the rivet is inserted is fused to join the first member and the second member. The connecting structure of the composite member according to claim 1, wherein the composite member is characterized in that.