阅读说明：本技术 接头结构体及其装配方法 (Joint structure and method of assembling the same ) 是由 原田敬 重成有 奥村郁夫 秋元丰晴 于 2019-04-12 设计创作，主要内容包括：接头结构体(10)具备设置于被加固部件(1)和加固部件(3)之间来将两者连结的连结部件(5)。连结部件(5)具有和被加固部件(1)、加固部件(3)的一方与另一方分别结合的第1结合部(5a)和第2结合部(5b)。第1结合部(5a)通过粘接剂(9)或焊接使被加固部件(1)和加固部件(3)的一方的接头部(3a)结合。第1结合部(5a)和接头部(3a)具有在被加固部件(1)和加固部件(3)的接头方向(D3)互相卡挂的形状。(The joint structure (10) is provided with a connecting member (5) that is provided between the reinforced member (1) and the reinforcing member (3) and connects the two members. The connecting member (5) has a 1 st joint (5 a) and a 2 nd joint (5 b) that are joined to one and the other of the member (1) to be reinforced and the reinforcing member (3), respectively. The 1 st joint portion (5 a) joins the joint portion (3 a) of one of the member to be reinforced (1) and the reinforcing member (3) by an adhesive (9) or welding. The 1 st joint part (5 a) and the joint part (3 a) have shapes that engage with each other in a joint direction (D3) of the member to be reinforced (1) and the reinforcing member (3).)

1. A joint structure for connecting a member to be reinforced and a reinforcing member, characterized in that,

a connecting member provided between the member to be reinforced and the reinforcing member to connect the both members,

the connecting member has a 1 st joint part and a 2 nd joint part which are respectively connected with one and the other of the reinforced member and the reinforcing member, the 1 st joint part is connected with the joint part of the one by adhesive or welding,

the 1 st joint portion and the joint portion have shapes that engage with each other in a joint direction of the member to be reinforced and the reinforcing member.

2. The joint structure according to claim 1,

the joint part has a protruding portion protruding in an orthogonal direction orthogonal to the joint direction,

the 1 st joint has a shape that sandwiches the protruding portion in the joint direction.

3. The joint structure according to claim 1 or 2,

comprises two coupling members arranged to face each other with the joint portion interposed therebetween in a direction orthogonal to the joint direction,

the two connecting members are set as a set, and a plurality of sets of the connecting members are disposed at a plurality of positions where the reinforced member and the reinforcing member are connected, respectively.

4. The joint structure according to claim 1 or 2,

the member to be reinforced and the reinforcing member are coupled by one coupling member at each of a plurality of coupling portions,

the direction orthogonal to the joint direction and facing opposite directions is set as the 1 st orthogonal direction and the 2 nd orthogonal direction,

in one of the connection portions, the 1 st joining portion of the connection member is located on the 1 st orthogonal direction side of the joint portion and is capable of receiving a load from the joint portion to the 1 st orthogonal direction side,

in the other of the connection portions, the 1 st joint portion of the connection member is located on the 2 nd orthogonal direction side of the joint portion, and receives a load from the joint portion to the 2 nd orthogonal direction side.

5. The joint structure according to claim 1 or 2,

the 2 nd joint portion is joined to the other of the joint portion of the member to be reinforced and the joint portion of the reinforcing member by an adhesive or welding,

the 2 nd joint portion and the joint portion have shapes that engage with each other in a joint direction of the member to be reinforced and the reinforcing member.

6. The joint structure according to any one of claims 1 to 5,

the connecting member is formed to be elastically deformable.

7. The joint structure according to claim 4,

the plurality of coupling members located on the 1 st orthogonal direction side of the joint portion and the plurality of coupling members located on the 2 nd orthogonal direction side of the joint portion are arranged in a zigzag manner.

8. A method of assembling a joint structure for connecting a member to be reinforced and a reinforcing member, characterized in that,

a preparing the reinforced member, the reinforcing member, and the connecting member,

b bonding the 1 st bonding portion of the connecting member and the member to be reinforced to one of the reinforcing members, and bonding the 2 nd bonding portion of the connecting member and the member to be reinforced to the other of the reinforcing members,

in the above B, the 1 st joint part and the joint part are arranged so that the 1 st joint part and the one joint part are engaged with each other in the joint direction between the member to be reinforced and the reinforcing member, and the 1 st joint part and the joint part are joined by an adhesive or welding.

9. The method of assembling a joint structure according to claim 8,

the joint part has a protruding portion protruding in an orthogonal direction orthogonal to the joint direction,

in the above-mentioned case B, the resin,

b1 wherein the two coupling members extend in the joint direction from the 2 nd coupling portion so that the 2 nd coupling portion of the two coupling members and the other coupling portion are coupled to each other so that the two coupling members face each other in the orthogonal direction, and wherein a gap is formed between the 1 st coupling portion and the other coupling portion, the gap including an opening in the joint direction on the side opposite to the 2 nd coupling portion and an accommodating portion located on the 2 nd coupling portion side with respect to the opening,

b2 elastically deforming the two coupling members to enlarge the opening, inserting the joint part into the gap from the opening in the joint direction, and positioning the protruding part in the receiving part,

b3 in this state, the 1 st joint part and the tab part are joined by an adhesive or welding.

10. The method of assembling a joint structure according to claim 8,

in the above-mentioned step B, the step B,

one of the coupling members is located at each of different coupling portions, the joint portion is held in an orthogonal direction orthogonal to the joint direction by the coupling members at the different coupling portions, and the one of the coupling members is arranged by coupling the 2 nd coupling portion of each of the coupling members with the other of the coupling members so that the joint portion and the 1 st coupling portion engage with each other in the joint direction at each of the coupling portions,

the 1 st joint part and the one of the joint parts are joined to each of the joining parts by an adhesive or welding.

11. The method of assembling a joint structure according to claim 10,

the connecting members at the different connecting portions are arranged in a zigzag manner, and the 1 st joint portion and the one joint portion are connected to each other at each connecting portion by an adhesive or welding.

Technical Field

The present invention relates to a joint structure for connecting a member to be reinforced and a reinforcing member, and an assembling method thereof.

Background

When a vehicle body of an automobile, a body of an airplane, or another structure is formed of a predetermined structural member (a member to be reinforced), the structural member and the reinforcing member are coupled to each other in order to improve the mechanical strength of the structural member. For example, in patent document 1, a tube portion (reinforced member) constituting an airframe of an aircraft is coupled to a 2 nd frame portion (reinforcing member) via a 1 st frame portion (coupling member).

Patent document 1: japanese patent laid-open No. 2008-222221.

When the member to be reinforced and the reinforcing member are coupled via the coupling member, for example, the coupling member and the reinforcing member coupled to the member to be reinforced are coupled to each other via an adhesive and a bolt (or a rivet). That is, if the two are joined together only by the adhesive, the mechanical strength of the joint is insufficient, and therefore, the two are also joined together by a bolt or a rivet (hereinafter also referred to as a bolt or the like).

However, when the connecting member and the reinforcing member are coupled by a bolt or the like, a through hole through which the bolt or the like is inserted needs to be formed in the connecting member and the reinforcing member. The same applies to the case where the connecting member and the member to be reinforced are joined by bolts or the like. Therefore, it is desirable to eliminate or reduce the number of bolts or the like.

Disclosure of Invention

The present invention aims to ensure the mechanical strength of a joint portion between a member to be reinforced and a reinforcing member when the member to be reinforced and the reinforcing member are joined together via a joining member, and one of the member to be reinforced and the reinforcing member and the joining member are joined together by an adhesive or welding without using bolts or the like.

In order to achieve the above object, a structure of the present invention is a structure for connecting a member to be reinforced and a reinforcing member, the structure including a connecting member that is provided between the member to be reinforced and the reinforcing member and connects the member to be reinforced and the reinforcing member, the connecting member including a 1 st joint portion and a 2 nd joint portion, the 1 st joint portion and the 2 nd joint portion being joined to one of the member to be reinforced and the reinforcing member and the other of the member to be reinforced and the reinforcing member, respectively, the 1 st joint portion being joined to one of the joint portions by an adhesive or welding, and the 1 st joint portion and the joint portions having shapes that engage with each other in a joint direction of the member to be reinforced and the reinforcing member.

The method of the present invention is a method of assembling a joint structure in which a member to be reinforced and a reinforcing member are connected to each other, wherein (a) the member to be reinforced, the reinforcing member, and a connecting member are prepared, (B) a 1 st connecting portion of the connecting member and the member to be reinforced are connected to one of the reinforcing members, and a 2 nd connecting portion of the connecting member and the member to be reinforced are connected to the other of the reinforcing members, and in the step (B), the 1 st connecting portion and the joint portion are arranged so that the 1 st connecting portion and the one joint portion are engaged with each other in a joint direction of the member to be reinforced and the reinforcing member, and the 1 st connecting portion and the joint portion are connected to each other by an adhesive or welding.

Effects of the invention

According to the present invention, in the structure in which the member to be reinforced and the reinforcing member are coupled via the coupling member, when the joint portion of one of the member to be reinforced and the reinforcing member and the coupling member are coupled by an adhesive or welding, the 1 st coupling portion and the joint portion have a shape that engages with each other in the joint direction of the member to be reinforced and the reinforcing member. Therefore, the mechanical strength in the joint direction at the joint portion of the joint portion and the coupling member in the joint direction is ensured by the 1 st joint portion and the joint portion being caught in the joint direction in addition to the adhesive or the weld bonding.

Drawings

Fig. 1 shows a joint structure according to embodiment 1 of the present invention.

Fig. 2A is a IIA-IIA view of fig. 1.

Fig. 2B is a partially enlarged view of fig. 2A.

Fig. 3 is a view from III-III of fig. 1.

Fig. 4 is a flowchart showing a method of assembling a joint structure according to embodiment 1 of the present invention.

Fig. 5A is an explanatory view of an assembling method of a joint structure according to embodiment 1 of the present invention.

Fig. 5B is another explanatory view of the method of assembling the joint structure according to embodiment 1 of the present invention.

Fig. 5C is another explanatory view of the method of assembling the joint structure according to embodiment 1 of the present invention.

Fig. 6A shows another configuration example of the coupling member and the joint portion.

Fig. 6B shows still another configuration example of the coupling member and the joint portion.

Fig. 7 shows the structure of the coupling member and the joint portion of the reference example.

Fig. 8 shows a joint structure according to embodiment 2 of the present invention.

Fig. 9A is an IXA-IXA directional view of fig. 8.

Fig. 9B is an IXB-IXB directional view of fig. 8.

Fig. 10 shows another configuration example of the coupling member and the joint portion.

Fig. 11A shows another configuration example of the coupling member and the joint portion.

Fig. 11B shows the coupling member of fig. 11A.

Fig. 12A is an explanatory diagram of an assembling method of the joint structure in the case of fig. 11A.

Fig. 12B is another explanatory diagram of the method of assembling the joint structure in the case of fig. 11A.

Detailed Description

Embodiments of the present invention are explained based on the drawings. In addition, the same reference numerals are given to the common portions in the drawings, and redundant description is omitted.

[ embodiment 1 ]

(Structure of Joint Structure)

Fig. 1 shows a joint structure 10 according to embodiment 1 of the present invention. Fig. 2A is a IIA-IIA view of fig. 1, and fig. 3 is a III-III view of fig. 1. The joint structure 10 includes a member to be reinforced 1, a reinforcing member 3, and a connecting member 5. That is, the joint structure 10 connects the member to be reinforced 1 and the reinforcing member 3 with the connecting member 5. The reinforced member 1, the reinforcing member 3, and the joining member 5 may be formed of fiber-reinforced plastic, metal, or other materials. In this case, the member to be reinforced 1, the reinforcing member 3, and the connecting member 5 may be formed of the same material, or may not be formed of the same material.

The member to be reinforced 1 is a plate-like member in the examples of the drawings. The plate-shaped member to be reinforced 1 has a mounting surface 1a on which the coupling member 5 is mounted. The mounting surface 1a is a surface facing in the thickness direction of the plate-shaped member 1 to be reinforced. The mounting surface 1a may be a flat surface, but is not limited thereto, and may be a curved surface.

The reinforcing member 3 is coupled to the member to be reinforced 1 via a coupling member 5. In fig. 1, directions perpendicular to each other along the mounting surface 1a are referred to as a 1 st direction D1 and a 2 nd direction D2, respectively. In the example of fig. 1, the plurality of reinforcing members 3 are arranged at intervals in the 1 st direction D1, and each reinforcing member 3 extends in an elongated manner in the 2 nd direction D2. The size and shape of the cross section of each reinforcing member 3 of the plane orthogonal to the 2 nd direction D2 may be constant regardless of the position in the 2 nd direction D2. The shape of the cross section of the reinforcing member 3 is, but not limited to, an inverted L-shape in the example of fig. 2A. The joint portion 3a of the reinforcing member 3 may be formed integrally with the reinforcing member 3 as shown in fig. 2A, or may be joined to the reinforcing member 3 after being formed as a member other than the reinforcing member 3. The bonding may be by adhesive or welding, bolts, etc. or a combination thereof.

The coupling member 5 is provided between the member to be reinforced 1 and the reinforcing member 3, and couples both members. In the present embodiment, the two coupling members 5 are disposed so as to face each other with the joint portion 3a interposed therebetween in an orthogonal direction (the 1 st direction D1 in the example of fig. 2) orthogonal to the joint direction D3 (see fig. 2A) of the member 1 to be reinforced and the reinforcing member 3. In this case, the two coupling members 5 are set to 1 group, and as shown in fig. 1, a plurality of groups of coupling members 5 may be arranged at a plurality of coupling portions for coupling the reinforcing member 1 and the reinforcing member 3, respectively. The set of coupling members 5 may have a structure symmetrical with respect to a plane passing therethrough in parallel with the joint direction D3. The structure of the one set of coupling members 5 may have the same structure regardless of the coupling portion. The size and shape of the cross section of each coupling member 5 of the plane orthogonal to the 2 nd direction D2 may be constant regardless of the position of the 2 nd direction D2.

Therefore, the orthogonal directions (1 st direction D1) facing opposite directions to each other are defined as a 1 st orthogonal direction and a 2 nd orthogonal direction, and at each of the coupling portions, the 1 st coupling portion 5a of one of the coupling members 5 in the one group is positioned on the 1 st orthogonal direction side (right side in fig. 2A) of the joint portion 3a and receives a load from the joint portion 3a toward the 1 st orthogonal direction side, and the 1 st coupling portion 5a of the other coupling member 5 in the one group is positioned on the 2 nd orthogonal direction side (left side in fig. 2A) of the joint portion 3a and receives a load from the joint portion 3a toward the 2 nd orthogonal direction side.

The connecting member 5 has a 1 st joining portion 5a and a 2 nd joining portion 5b that join the member 1 to be reinforced and one and the other of the reinforcing members 3, respectively. The 1 st joint portion 5a is joined to the joint portion 3a of one of the member to be reinforced 1 and the reinforcing member 3 (the reinforcing member 3 in the present embodiment) by an adhesive or welding. The coupling member 5 is formed of an elastically deformable material. That is, the connecting member 5 before being bonded or welded to the reinforcing member 3 is formed so as to be elastically deformable.

Fig. 2B is a partially enlarged view of fig. 2A, showing the tab portion 3a and the 1 st joint portion 5 a. The joint portion 3a and the 1 st joint portion 5a have shapes that engage with each other in the joint direction D3 of the member to be reinforced 1 and the reinforcing member 3. In the present embodiment, the 1 st joint portion 5a has a shape that sandwiches a part of the tab portion 3a (a projection portion 7 described later) in the tab direction D3. That is, the 1 st joint portion 5a has overlapping surfaces 12a and 12b overlapping and sandwiching a part of the overlapping surfaces 11a and 11b of the joint portion 3a in the joint direction D3.

In addition, the joint direction D3 may mean a direction from the end closest to the reinforced member 1 at the joint portion 3a toward the position closest to the joint portion 3a at the reinforced member 1 and a direction opposite to the direction. In the example of fig. 2, the joint direction D3 is a direction perpendicular to the mounting surface 1 a. In the present embodiment, the overlapping surfaces 11a, 11b, 12a, and 12b are inclined with respect to the joint direction D3 (for example, a direction in which the angle with the joint direction D3 is greater than 0 degrees and 45 degrees or less).

The joint portion 3a has a protruding portion 7 protruding in an orthogonal direction (1 st direction D1 in fig. 2B) orthogonal to the joint direction D3 of the reinforced member 1 and the reinforcing member 3. In the present embodiment, the joint portion 3a has two projecting portions 7 projecting in the orthogonal directions opposite to each other. An adhesive 9 for bonding the both surfaces 11, 12 to each other is provided between the surface 11 of the protruding portion 7 and the surface 12 of the 1 st joint 5a facing each other. The face 11 comprises the above-mentioned overlapping faces 11a, 11b, and the face 12 comprises the above-mentioned overlapping faces 12a, 12 b. In this case, the tab portion 3a (reinforcing member 3) and the 1 st joint portion 5a (connecting member 5) may be formed of a thermoplastic resin, or a thermoplastic resin film for welding may be used. Further, bolts or the like may not be used for the coupling of the joint portion 3a and the coupling member 5.

The 2 nd joint 5b is not shown in fig. 1 to 3, but may be joined to the member to be reinforced 1 by, for example, an adhesive or welding (or a bolt and a nut, a rivet, an adhesive or welding and both a bolt and a nut, or an adhesive or welding and both a rivet). In the example of fig. 3, a longitudinal member 13 extending in the 1 st direction D1 in addition to the member 1 to be reinforced is coupled to the mounting surface 1 a. The plurality of vertical passages 13 are arranged at intervals in the 2 nd direction D2. As shown in fig. 3, each longitudinal channel 13 is disposed so as to pass through a space between the mounting surface 1a and the reinforcing member 3 in the 1 st direction D1.

In addition, the joint structure 10 may be a single-shell structure in one example. In this case, the plate-like member to be reinforced 1 is, for example, an outer panel constituting an airframe of an airplane or a body of an automobile. When the member to be reinforced 1 is an outer panel (skin) constituting a body of an aircraft (for example, a passenger aircraft), the 1 st direction D1 is an axial direction parallel to a central axis of the body of the aircraft, and the 2 nd direction D2 is a circumferential direction around the central axis. Such an outer panel 1 may be formed in a cylindrical shape, for example. In the outer panel 1, the reinforcing members 3 are frames extending in the circumferential direction, and the mounting surface 1a is an inner peripheral surface extending in the 1 st direction D1 and the 2 nd direction D2. Further, each longitudinal passage 13 (striper) extending in the axial direction is coupled to the outer plate 1. In addition, although a plurality of sets of the coupling members 5 are provided in the above description, a set of the coupling members 5 may be provided instead of a plurality of sets depending on the size and shape of the member to be reinforced 1 and the reinforcing member 3.

(method of assembling Joint Structure)

Fig. 4 is a flowchart showing the method of assembling the joint structure 10. Fig. 5A to 5C are explanatory views of an assembling method of the joint structure 10.

In step S1, the member to be reinforced 1, the reinforcing member 3, and the coupling member 5 are prepared.

In step S2, the 1 st joint portion 5a of the connecting member 5 is joined to one of the reinforced member 1 and the reinforcing member 3 (the reinforcing member 3 in the present embodiment), and the 2 nd joint portion 5b of the connecting member 5 is joined to the other of the reinforced member 1 and the reinforcing member 3 (the reinforced member 1 in the present embodiment).

Here, the bonding of the 1 st bonding portion 5a and the reinforcing member 3 may be as follows. That is, the 1 st joint 5a and the joint 3a are arranged so that the 1 st joint 5a and the joint 3a are engaged with each other in the joint direction D3 (in two directions D3 opposite to each other), and in this state, the 1 st joint 5a and the joint 3a are joined by an adhesive or welding. The step S2 includes steps S21 to S23.

In step S21, as shown in fig. 5A, the two coupling members 5 couple the 2 nd coupling portions 5b of the coupling members 5 to the mounting surface 1a of the member to be reinforced 1 so as to face each other in the orthogonal direction (the 1 st direction D1) orthogonal to the joint direction D3. The bonding may be performed, for example, by an adhesive or welding, but is not limited thereto.

In the state where the 2 nd coupling parts 5b of the two coupling members 5 are coupled to the mounting surface 1a in step S21, the two coupling members 5 extend in the joint direction D3 from the 2 nd coupling parts 5b coupled to the mounting surface 1a, and a gap G in the 1 st direction D1 is formed between the 1 st coupling parts 5A, as shown in fig. 5A. The gap G has an opening Go in the joint direction D3 on the side opposite to the mounting surface 1a (the 2 nd coupling portion 5b), and has a receiving portion Gr on the mounting surface 1a side (the 2 nd coupling portion 5b side) of the opening Go. The size of the receiving portion Gr in the 1 st direction D1 is larger than the size of the opening Go in the 1 st direction D1. The gap G may have a shape that is integrated with the shape of the joint portion 3 a. For example, since the protruding portion 7 is accommodated in the accommodating portion Gr in step S22 described later, the accommodating portion Gr has a shape that matches the shape of the protruding portion 7. Such a gap G is defined by the surfaces 12 of the 1 st coupling portions 5a of the two coupling members 5. The gap G penetrates the two coupling members 5 in the 2 nd direction D2.

In step S22, as shown in fig. 5B, the two coupling members 5 are elastically deformed so that the opening Go becomes larger. For example, the two coupling members 5 may be elastically deformed by pushing the joint portion 3a toward the opening Go in the joint direction D3 or by a human hand so as to enlarge the opening Go. Next, the projecting portion 7 of the joint portion 3a is inserted into the gap G from the opening Go in the joint direction D3, so that the projecting portion 7 is positioned in the accommodating portion Gr. Thereby, as shown in fig. 5C, the projecting portion 7 is accommodated in the accommodating portion Gr, and the 1 st joint portion 5a and the joint portion 3a are arranged to be hooked to each other in the joint direction D3. In the example of fig. 5C, the protruding portion 7 of the 1 st joint portion 5a of each coupling member 5 is sandwiched between the overlapping surfaces 12a and 12B of the 1 st joint portions 5a of the corresponding coupling members 5 in the joint direction D3, as shown in fig. 2B.

As a result of step S22, the reinforcing member 3 is supported by the member to be reinforced 1 via the joint portion 3a and the connecting member 5, and the joint structure 10 is temporarily assembled. That is, the elastic force of the coupling member 5 prevents the joint portion 3a from coming off from the coupling member 5 in any direction.

In the present embodiment, the tab portion 3a has a size (a size in the 1 st direction D1 in the example of fig. 5A) that gradually increases as it transitions to the side opposite to the mounting surface 1a in a range from the end on the mounting surface 1a side to the intermediate portion. The joint portion 3a has a size gradually decreasing in a range from the intermediate portion (the portion having the largest size) to a predetermined position as it transitions to the side opposite to the mounting surface 1 a. Thereby, the joint portion 3a is easily inserted into the gap G from the distal end portion through the opening Go.

When the tab 3a and the 1 st joint 5a are joined by the adhesive 9, the adhesive 9 may be applied to one or both of the surface 11 of the protrusion 7 and the surface 12 of the 1 st joint 5a before the tab 3a is inserted into the gap G in step S22.

In this case, in step S23, the adhesive 9 is cured to bond the 1 st bonding portion 5a and the tab portion 3a with the adhesive 9. For example, in a state where the protruding portion 7 is accommodated in the accommodating portion Gr, the surfaces 11 and 12 are connected via the adhesive 9, so that the state is maintained until the adhesive 9 is cured. At this time, the 1 st joint portion 5a of each coupling member 5 may be pressed against the joint portion 3a by an appropriate means in the direction indicated by the arrow a (the 1 st direction D1) in fig. 5C so as to push the surface 12 to the surface 11. The pressurization may be maintained until the adhesive 9 is cured, for example.

Further, in the case where the tab 3a (the projecting portion 7) and the coupling member 5 (the 1 st joint portion 5a) are formed of a thermoplastic resin instead of welding by adhesion using the adhesive 9, the 1 st joint portion 5a and the tab 3a may be joined by welding in step S23. In this case, the 1 st joint portion 5a and the tab portion 3a may be directly welded and joined by melting themselves, or may be welded and joined by a thermoplastic resin film. In the case of using a thermoplastic resin film, the tab portion 3a and the coupling member 5 may not be formed of a thermoplastic resin. In this way, the surface 11 of the protruding portion 7 and the surface 12 of the 1 st joint 5a may be joined by welding.

In this case, for example, before the tab 3a is inserted into the gap G in step S22, the surface 11 of the projection 7 and the surface 12 of the 1 st joining portion 5a are heated and melted by the heater, and the tab 3a is inserted into the gap G in this state. Thereafter, in step S23, the 1 st joint portion 5a of each connecting member 5 may be pressed against the joint portion 3a in the direction indicated by the arrow a in fig. 5C (the 1 st direction D1) by an appropriate means so that the surface 12 is pressed against the surface 11 until the melted surfaces 11 and 12 are cooled and solidified, thereby being integrated. In another example, in step S23, the protruding portion 7 inserted into the gap G and the 1 st joint portion 5a may be directly joined to each other through a thermoplastic resin film by vibration welding. Alternatively, in step S23, the tab portion 3a and the 1 st bonding portion 5a may be bonded by another welding method by directly integrating or via a thermoplastic resin film the surfaces 11 and 12. In the case where the thermoplastic resin film is used as described above, the thermoplastic resin film can be regarded as the adhesive 9 described above, for example, when the tab portion 3a and the 1 st joint portion 5a are formed of a material (for example, a metal) that does not melt at the time of welding.

In step S23, the 1 st joint portion 5a and the tab portion 3a of each coupling member 5 may be heated by an external heater or the like, and each 1 st joint portion 5a may be pressed against the tab portion 3a by an appropriate means, and then the heating may be stopped, and thereafter, the adhesive 9 may be cured, or the portion melted for welding may be cured and then the pressing may be stopped.

When two coupling members 5 are set as one set and the member to be reinforced 1 and one reinforcing member 3 are coupled by a plurality of sets of coupling members 5 as shown in fig. 1, the above-described step S2 can be performed for each set of coupling members 5. In this case, after the step S21 is performed with respect to the plurality of sets of coupling members 5, the steps S22 and S23 may be performed simultaneously with respect to the plurality of sets of coupling members 5. In the case where a plurality of reinforcing members 3 are provided as shown in fig. 1, each reinforcing member 3 may be coupled to the member to be reinforced 1 via a plurality of sets of coupling members 5 as described above.

(other configuration example of embodiment 1)

In embodiment 1, the shapes of the joint portion 3a and the coupling member 5 are not limited to the shapes shown in fig. 2A and 2B. For example, the joint portion 3a and the coupling member 5 may have the shapes shown in fig. 6A or 6B. Fig. 6A and 6B are IIA-IIA views (corresponding to fig. 2B) of fig. 1, respectively, and show a case where the joint portion 3a and the coupling member 5 have other shapes.

The configuration example of fig. 6A and the configuration example of fig. 6B are explained, but the joint structure 10 and the method of assembling the joint structure in the case of these configuration examples may be the same as those described above in the following points which are not explained.

In the example of fig. 6A, two projecting portions 7 that are orthogonal to the joint direction D3 and project in mutually opposite directions (the 1 st direction D1) are provided at the joint portion 3 a. The protruding portion 7 of one of the two protruding portions 7 (the right side in fig. 6A) has an overlapping surface 11b facing the joint direction D3 on the mounting surface 1a side, and an overlapping surface 11a on the opposite side of the mounting surface 1a and facing a direction inclined with respect to the joint direction D3. The other protruding portion 7 has an overlapping surface 11a facing the joint direction D3 on the side opposite to the mounting surface 1a, and an overlapping surface 11b facing a direction inclined with respect to the joint direction D3 on the mounting surface 1a side.

The two coupling members 5 provided to the joint portion 3a have the following shapes. The surface 12 of the one coupling member 5 has surfaces 12a, 12b joined to the overlapping surfaces 11a, 11b of the one protruding portion 7 so as to face each other. The surface 12 of the other connecting member 5 has surfaces 12a and 12b joined to face each other with the overlapping surface of the other protruding portion 7.

In the example of fig. 6B, two projecting portions 7 that project in mutually opposite directions (1 st direction D1) are provided at the joint portion 3a so as to be orthogonal to the joint direction D3. The two projecting portions 7 have overlapping surfaces 11b facing in a direction inclined with respect to the joint direction D3 on the mounting surface 1a side and overlapping surfaces 11a facing in the joint direction D3 on the side opposite to the mounting surface 1a, respectively. Each of the two coupling members 5 provided with respect to such a joint portion 3a has surfaces 12a, 12b joined to face each other with the overlapping surfaces 11a, 11b of the corresponding protruding portion 7.

(Effect of embodiment 1)

According to embodiment 1, the tab 3a of the reinforcing member 3 and the coupling member 5 are joined by the adhesive 9 or welding, and the 1 st joint portion 5a of the tab 3a and the coupling member 5 have shapes that engage with each other in the tab direction D3. Therefore, the mechanical strength in the joint direction D3 of the joint portion 3a and the joint portion of the coupling member 5 in the joint direction D3 is further ensured by the engagement of both in the joint direction D3 in addition to the bonding by the adhesive 9 or welding. Therefore, bolts or the like are not required for joining the joint portion 3a and the coupling member 5. This eliminates the need to form holes for passing bolts or the like through the connecting members 5 and the joint portions 3a, and reduces the number of parts of the joint structure 10, thereby reducing the assembly work load of the joint structure 10.

On the other hand, fig. 7 shows a structure of a reference example corresponding to fig. 2A. In fig. 7, a coupling member 105 for coupling the reinforcing member 101 and the reinforcing member 103 is coupled to the joint portion 103a of the reinforcing member 103 with an adhesive 109. However, since the mechanical strength in the joint direction D3 of the joint portion between the joint portion 103a and the coupling member 105 is insufficient only by the adhesive 109, the joint portion 103a and the coupling member 105 are also coupled by the bolt 111 and the nut 112. In this case, unlike embodiment 1 of the present invention, it is necessary to form a hole through which the bolt 111 passes in the joint portion 103a and the coupling member 105. In contrast, in the joint structure 10 according to embodiment 1, the holes for bolts are not required to be formed as described above. Although not shown, the same effect is obtained when rivets are used instead of the bolts 111 and nuts 112 in fig. 7 to obtain mechanical strength.

Further, according to embodiment 1, since each coupling member 5 is elastically deformable, the joint structure 10 can be temporarily assembled easily by elastically deforming the coupling member 5 and inserting the joint portion 3a into the gap G as in step S22 described above.

[ 2 nd embodiment ]

Fig. 8 shows a joint structure 10 according to embodiment 2 of the present invention. Fig. 9A is an IXA-IXA directional view of fig. 8 and fig. 9B is an IXB-IXB directional view of fig. 8. The following description is given of embodiment 2, but the structure and the method of assembling the joint structure 10 of embodiment 2, which are not described below, may be the same as those of embodiment 1.

In embodiment 2, the member to be reinforced 1 and the reinforcing member 3 are coupled by one coupling member 5 at each of the plurality of coupling portions, not by a plurality. Hereinafter, two directions (1 st direction D1) orthogonal to the joint direction D3 and facing opposite directions to each other are referred to as a 1 st orthogonal direction (right direction in fig. 9A and 9B) and a 2 nd orthogonal direction (left direction in fig. 9A and 9B), respectively.

At a certain connection portion, as shown in fig. 9A, the 1 st joint portion 5a of the connection member 5 is located on the 1 st orthogonal direction side of the joint portion 3a, and receives a load in the 1 st orthogonal direction from the joint portion 3 a. At the coupling portion, the 1 st coupling portion 5a and the tab portion 3a are coupled in the 1 st orthogonal direction by an adhesive 9 or welding provided therebetween as shown in fig. 9A.

In the other coupling portion, as shown in fig. 9B, the 1 st coupling portion 5a of the coupling member 5 is positioned on the 2 nd orthogonal direction side of the joint portion 3a, and receives a load in the 2 nd orthogonal direction from the joint portion 3 a. At the joint portion, the 1 st joint portion 5a and the tab portion 3a are joined in the 2 nd orthogonal direction by an adhesive 9 or welding provided therebetween as shown in fig. 9B.

In the example of fig. 8, the plurality of coupling members 5 are arranged in a zigzag manner in each of the reinforcing members 3 extending in an elongated manner in the 2 nd direction D2. That is, in each combination of two coupling members 5 adjacent to each other in the 2 nd direction D2 in each reinforcing member 3, one coupling member 5 is positioned on the 1 st orthogonal direction side of the joint 3a, and the other coupling member 5 is positioned on the 2 nd orthogonal direction side of the joint 3 a. In this case, the configuration of each connection portion (the joint portion 3a, the connection member 5, the adhesive 9, and the like) may be the same as that in fig. 9A or 9B. In other words, the plurality of coupling members 5 located on the 1 st orthogonal direction side of the joint portion 3a and the plurality of coupling members 5 located on the 2 nd orthogonal direction side of the joint portion 3a are arranged in a zigzag shape when viewed in the joint direction D3 (direction orthogonal to the paper surface of fig. 8).

In the method of assembling the joint structure 10 according to embodiment 2, steps S21 to S23 of step S2 described above are performed as follows.

In step S21, the 2 nd coupling portions 5b of one coupling member 5 are coupled to the one mounting surface 1a at coupling portions different in position in the 2 nd direction D2 with respect to one reinforcing member 3. At this time, the coupling members 5 are arranged in a zigzag manner as described above.

In step S22, one reinforcing member 3 (joint 3a) is sandwiched in the 1 st direction D1 by the coupling members 5 of different coupling portions, and as shown in fig. 9A and 9B, the reinforcing member 3 is arranged such that the joint 3a and the 1 st joint 5a are engaged with each other in the joint direction D3 at each coupling portion.

In step S23, in the state of the arrangement in step S22, the 1 st joint 5a and the tab 3a are joined to each other at each joint portion by the adhesive 9 or by welding.

According to embodiment 2, the respective reinforcing members 3 are sandwiched in the 1 st direction D1 by the coupling members 5 at coupling portions different in position in the 2 nd direction D2. Therefore, since the reinforcement member 3 is prevented from being displaced in both the 1 st and 2 nd orthogonal directions with respect to the coupling member 5, the state in which the joint portion 3a and the 1 st coupling portion 5a are engaged with each other is maintained in the joint direction D3. This reduces the number of coupling members 5 as compared with the case of embodiment 1, and can obtain the same effects as those of embodiment 1. In this way, the structure of embodiment 1 or embodiment 2 can be adopted in accordance with the mechanical strength required for the joint structure 10.

In embodiment 2, the coupling member 5 and the joint 3a at different coupling portions for sandwiching the reinforcing member 3 in the 1 st direction D1 may be the coupling member 5 and the joint 3a of one side and the other side in fig. 6A or 6B, or may have other shapes.

The present invention is not limited to the above-described embodiments, and it is apparent that various changes can be made within the scope of the technical idea of the present invention. For example, any of the following modified examples 1 to 3 may be adopted, or two or more of the modified examples 1 to 3 may be adopted in any combination. In this case, the aspects not described below may be the same as those described above.

(modification 1)

According to modification 1, the joint portion 3a may have a shape in which a part of the 1 st joint portion 5a is sandwiched in the joint direction D3, as shown in fig. 10. Fig. 10 is a IIA-IIA view of fig. 1, but shows a configuration example in the case where the joint portion 3a and the coupling member 5 have other shapes. When this shape is applied to embodiment 1 or embodiment 2 described above, the other structure of the joint structure 10 and the assembling method are the same as those described above.

(modification 2)

According to modification 2, when the member to be reinforced 1 is not flat plate-shaped or is otherwise appropriate, the joint portion 3a may not be provided in the reinforcing member 3, and the joint portion having the same configuration as the joint portion 3a may be provided in the member to be reinforced 1. In this case, the 1 st joint portion 5a of the connecting member 5 is joined to the joint portion of the member to be reinforced 1, and the 2 nd joint portion 5b of the connecting member 5 is joined to the reinforcing member 3. Here, the 1 st joint 5a and the joint of the member 1 to be reinforced may be joined by the same structure as the above-described 1 st joint 5a and joint 3a, and the 2 nd joint 5b and the reinforcing member 3 may be joined by an adhesive or welding (or both of a bolt and a nut, a rivet, an adhesive or welding and a bolt and a nut, or both of an adhesive or welding and a rivet).

(modification 3)

According to modified example 3, the 2 nd joint portion 5b of the coupling member 5 may be joined to the joint portion 1b of the member to be reinforced 1 by an adhesive 9 or welding as shown in fig. 11A, and the 2 nd joint portion 5b and the joint portion 1b may have shapes that engage with each other in the joint direction D3 of the member to be reinforced 1 and the reinforcing member 3. Fig. 11A is a IIA-IIA view of fig. 1, but the 2 nd joining portion 5b of the connecting member 5 shows a configuration example of the case of joining with the member to be reinforced 1 in this way. In the example of fig. 11A, the coupling member 5 includes two 1 st coupling portions 5a, two 2 nd coupling portions 5b, and an intermediate portion 5 c.

The two 1 st joint portions 5a are arranged to face each other with the joint portion 3a of the reinforcing member 3 interposed therebetween in an orthogonal direction (the 1 st direction D1) orthogonal to the joint direction D3. The two 1 st joint portions 5a have the same configuration (shape, material, etc.) and function as the two 1 st joint portions 5a of the one set of the coupling member 5 according to embodiment 1, and therefore, detailed description thereof is omitted. In fig. 11A, the joint portion 3a of the reinforcing member 3 is the same as the joint portion 3a of embodiment 1.

The two 2 nd coupling portions 5b are arranged so as to face each other with the joint portion 1b of the member to be reinforced 1 therebetween in the orthogonal direction (the 1 st direction D1) orthogonal to the joint direction D3. The joint portion 1b may be formed integrally with the member to be reinforced 1, or may be joined to the member to be reinforced 1 after being formed as a member other than the member to be reinforced 1. The bonding may be by adhesive or welding, bolts, or the like, or a combination thereof.

The two 2 nd coupling parts 5b and the joint part 1b of the present modification 3 may be configured to have the same functions (for example, the same structures (shapes, materials)) as the two 1 st coupling parts 5a and the joint part 3a of the present modification 3. For example, the joint portion 1b may have a projection 7 that is caught with each 2 nd coupling portion 5b in the joint direction D3.

The intermediate portion 5c is located between the two 1 st joint portions 5a and the two 2 nd joint portions 5b, and is joined to the two 1 st joint portions 5a and the two 2 nd joint portions 5 b. For example, the intermediate portion 5c, the 1 st joint portion 5a, and the 2 nd joint portion 5b may be integrally formed with each other.

Fig. 11B is a diagram of fig. 11A without illustrating the structure other than the coupling member 5. As shown in fig. 11B, the coupling member 5 forms a gap G in the 1 st direction D1 between the two 1 st coupling parts 5a, and also forms a gap G in the 1 st direction D1 between the two 2 nd coupling parts 5B. Each gap G has an opening Go at an end portion in the joint direction D3 and an accommodating portion Gr on the intermediate portion 5c side of the opening Go. The structure (shape, size, etc.) and function of the opening Go and the accommodating portion Gr are the same as those of the opening Go and the accommodating portion Gr in embodiment 1.

Fig. 12A and 12B are views corresponding to fig. 11A, and are views for explaining an example of the method of assembling joint structure 10 according to modified example 3. In the method of assembling joint structure 10 according to modification 3, step S2 described above can be performed as follows.

In step S2 of the above-described mounting method, as shown in fig. 12A, the coupling member 5 is elastically deformed so that the opening Go of the gap G formed by the two 2 nd coupling portions 5b is increased. Next, the coupling member 5 is attached to the tab portion 1b so that the tab portion 1b (the protruding portion 7) is disposed in the accommodating portion Gr through the opening Go. Thereafter, as shown in fig. 12B, the connecting member 5 is elastically deformed so as to increase the opening Go of the gap G formed by the two 1 st joint portions 5 a. Next, the tab 3a is attached to the connecting member 5 so that the tab 3a (the protruding portion 7) is disposed in the receiving portion Gr through the opening Go. Thereafter, the 1 st joint portion 5a and the tab portion 3a are joined by an adhesive 9 or welding, and the 2 nd joint portion 5b and the tab portion 1b are joined by an adhesive 9 or welding.

Here, the timing of applying the adhesive 9, the timing of heating and pressing the respective portions for welding, and the like may be the same as in the case of embodiment 1 described above, or may be changed as appropriate. After the connecting member 5 is attached to the joint portion 3a of the reinforcing member 3, the joint portion 1b of the member 1 to be reinforced may be attached to the connecting member 5. In this case, other aspects may be the same as described above. The connecting portion of the reinforcing member 3 and the member 1 to be reinforced of the connecting member 5 may be a plurality of portions as in embodiment 1, or may be a single portion.

Description of the reference numerals

1 reinforced member (outer panel), 1a mounting surface, 1b joint, 3 reinforcing member (frame), 3a joint, 5 connecting member, 5a 1 st joint, 5b 2 nd joint, 5c middle portion, 7 projecting portion, 9 adhesive, 10 joint structure, 11 joint surface, 11a, 11b overlapping surface, 12a, 12b overlapping surface, 13 longitudinal through piece, G gap G, D1 1 st direction, D2 2 nd direction, D3 joint direction.