Structure, hollow member structure, and method for manufacturing hollow member structure

Abstract

Provided are: a structure in which members can be fitted using a fitting structure in which the members can be easily fixed to each other; a hollow member structure; and a method for manufacturing the hollow member structure. A structure according to the present disclosure has a fitting structure in which a second member provided with an insertion part having a circular cross-sectional shape perpendicular to the insertion direction of the insertion part is fitted into a first member provided with an inserted part, the insertion part being a prism, and the second member having a circular cross-sectional shape perpendicular to the insertion direction of the insertion part when the insertion part is inserted into the inserted part. The insertion part is in contact with the inner peripheral surface of the inserted part, and the insertion part deforms along the shape of the inner peripheral surface of the inserted part along with the contact, so that the insertion part is fixed in the inserted part. According to this configuration, it is possible to provide a structure in which members can be fitted using a fitting structure that can easily fix the members to each other.

Description

Technical Field

[0001] This disclosure relates to a structure, a hollow component structure, and a method for manufacturing a hollow component structure. Background Technology

[0002] Patent document 1 discloses a mounting panel reinforcement and fixing structure as follows: a pipe component is inserted into a through hole, and the pipe component is riveted and fixed to the through hole by electromagnetic forming of the inserted pipe component. Existing technical documents Patent documents

[0003] Patent Document 1: Japanese Patent Application Publication No. 2019-018608 Summary of the Invention The problem that the invention aims to solve

[0004] However, in the mounting panel reinforcement structure disclosed in Patent Document 1, the diameter of the tube component is expanded by pulse energizing, thereby riveting and fixing the tube component to the through hole. Therefore, there is a problem of increased processing costs for the component due to electromagnetic forming.

[0005] This disclosure was made in view of the above-mentioned problems, and provides a structure that uses a fitting structure that can easily fix the components to each other, a hollow component structure, and a method for manufacturing the hollow component structure. Technical means for solving problems

[0006] One aspect of this disclosure relates to a structure having a fitting structure in which a second member having an insertion portion is inserted into and fitted into a first member having an insertion portion, wherein... The inner circumferential surface of the inserted part has a circular cross-section that is perpendicular to the insertion direction of the inserted part. The insertion part is a prism. When the insert portion is inserted into the inserted portion, the insert portion contacts the inner peripheral surface of the inserted portion. As the contact occurs, the insertion portion deforms along the shape of the inner circumferential surface of the inserted portion, thereby fixing the insertion portion within the inserted portion.

[0007] In one aspect of this disclosure, the hollow component structure connects a pair of separately arranged first hollow components via a pair of separately arranged second hollow components, wherein... The first hollow component has an insertion portion. The second hollow component has an insertion portion. The inner circumferential surface of the inserted part has a circular cross-section that is perpendicular to the insertion direction of the inserted part. The insertion part is a prism. When the insert portion is inserted into the inserted portion, the insert portion contacts the inner peripheral surface of the inserted portion. As the contact occurs, the insertion portion deforms along the shape of the inner circumferential surface of the inserted portion, thereby fixing the insertion portion within the inserted portion.

[0008] The method for manufacturing a hollow component structure according to one aspect of this disclosure includes: The step of forming the inserted portion in a pair of first hollow members; The step of forming an insertion portion in a pair of second hollow members; The step of separating and configuring the pair of first hollow components; and Regarding the pair of first hollow members, the step of connecting the two separated parts respectively via the second hollow member. in, The inner circumferential surface of the inserted part has a circular cross-section that is perpendicular to the insertion direction of the inserted part. The insertion part is a prism. When the insert portion is inserted into the inserted portion, the insert portion contacts the inner peripheral surface of the inserted portion. As the contact occurs, the insertion portion deforms along the shape of the inner circumferential surface of the inserted portion, thereby fixing the insertion portion within the inserted portion. Invention Effects

[0009] According to this disclosure, a structure that fits together using a fitting structure that allows components to be easily fixed to each other, a hollow component structure, and a method for manufacturing the hollow component structure are provided. Attached Figure Description

[0010] Figure 1 (a) is a schematic perspective view of a first member having an insertion portion according to an embodiment of the present disclosure. (b) is a cross-sectional view of the first member having an insertion portion according to an embodiment of the present disclosure, perpendicular to the insertion direction. Figure 2 (a) is a schematic perspective view of a second member having an insertion portion according to an embodiment of the present disclosure. (b) is a cross-sectional view of the second member having an insertion portion according to an embodiment of the present disclosure, perpendicular to the insertion direction. Figure 3 (a) is a schematic perspective view of a structure according to an embodiment of the present disclosure in which the insertion portion of the second member is inserted into the insertion portion of the first member. (b) is a cross-sectional view of a structure according to an embodiment of the present disclosure in which the insertion portion of the second member is inserted into the insertion portion of the first member, perpendicular to the insertion direction. Figure 4This is a schematic perspective view of the hollow component structure according to the embodiments of this disclosure. Figure 5 This is a flowchart of a method for manufacturing a hollow component structure according to an embodiment of the present disclosure. Detailed Implementation

[0011] Hereinafter, specific embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, the present disclosure is not limited to the following embodiments. In addition, for the sake of clarity, the following description and drawings have been appropriately simplified.

[0012] <Structure Composition> Figure 1 (a) is a schematic perspective view of a first member having an insertion portion according to an embodiment of the present disclosure. Figure 1 (b) is a cross-sectional view of the first member having an insertion portion according to an embodiment of the present disclosure, perpendicular to the insertion direction.

[0013] The first component 1 has an insertable portion 11 that can engage with the insert portion 21 of the second component 2 (described later), and engages with the insert portion 21 of the second component 2. In addition, Figure 1 (a) and Figure 1 In (b), the first component 1 is a hollow cylinder, but the shape of its outer peripheral surface is not particularly limited; it can be, for example, a prism, or have protrusions or concave surfaces for combination with other components. Furthermore, by making the shape of its outer peripheral surface the same as the body 20 of the second component 2 (described later), the outer peripheral surfaces of the structure 3 can be made coplanar when forming the structure 3. Additionally, the size of the first component 1, for example, when fitted with the second component 2 to form the structure 3, is determined according to the required strength and shape of the structure 3. Furthermore, the material of the first component 1 is not particularly limited; it can be, for example, a metal such as iron, aluminum, steel, or an aluminum alloy.

[0014] The inserted portion 11 engages with the inserted portion 21 of the second member 2. Regarding the inserted portion 11, the inner circumferential surface is a circular cross-section perpendicular to the insertion direction. Figure 1 (a) and Figure 1 In the example shown in (b), the inner circumferential surface has a circular cross-section. In addition, Figure 1 (a) and Figure 1In (b), the insertion portion 11 is provided through the insertion direction, but the insertion portion 11 may also be a non-through shape. That is, the insertion portion 11 may also be provided as a recess in the first member 1. In this case, the depth of the recess of the insertion portion 11 is only required to be deep enough to fit with the insertion portion 21, and can be deeper or shallower than the fitting area provided at the front end of the insertion portion 21. In addition, the inner diameter of the insertion portion 11 is only required to be large enough to fit with the insertion portion 21, and can be determined according to the fitting strength.

[0015] Figure 2 (a) is a schematic perspective view of a second member having an insertion portion according to an embodiment of the present disclosure. Figure 2 (b) is a cross-sectional view of the second member having an insertion portion according to an embodiment of the present disclosure, perpendicular to the insertion direction.

[0016] The second component 2 has a main body 20 and an insertion part 21 that can be fitted with the insertion part 11 of the first component 1.

[0017] The main body 20 is connected to the insertion part 21. Furthermore, in Figure 2 (a) and Figure 2 In (b), the main body 20 is cylindrical, but its shape is not particularly limited; it can also be a prism, or have protrusions or concave-convex features for combination with other components. Furthermore, by making the shape of the main body 20 the same as the first component 1, the outer peripheral surfaces of the structure 3 can be made coplanar when forming the structure 3. Alternatively, the main body 20 and the insertion part 21 can be integrally formed as prisms of the same shape. The size of the second component 2, for example, when fitted with the first component 1 to form the structure 3, is determined based on the required strength and shape of the structure 3. The second component 2 can also be a hollow component with a through hole. In this case, the position and size of the through hole are not particularly limited, and the through hole can also penetrate the insertion part 21. The material of the second component 2 is not particularly limited; for example, it can be a metal such as iron, aluminum, steel, or aluminum alloy.

[0018] The insertion part 21 is fitted into the insertion part 11 of the first member 1. The insertion part 21 is a prism, and the cross-section of its outer peripheral surface perpendicular to the insertion direction is polygonal. Furthermore, as mentioned above, the insertion part 21 may also have a through hole. Additionally, the size of the insertion part 21 is only required to fit into the inserted part 11, and is determined based on the fitting strength during engagement. Furthermore, the cross-sectional shape of the insertion part 21 may not be a regular polygon, but may be a polygon with different side lengths.

[0019] Furthermore, regarding the number of vertices of the cross-sectional polygon, from the perspective of the fitting strength of the mating parts, it is preferable to have 10 or fewer, more preferably 5 to 8. If the number of vertices of the cross-sectional polygon is less than 5, the corners of the insertion part 21 are prone to breakage during fitting. Conversely, if the number of vertices of the cross-sectional polygon exceeds 10, the deformation of the insertion part 21 during fitting becomes smaller, and the fitting strength tends to be lower. Figure 3 In (b), as an example, the case where the cross-sectional polygon of the insertion part 21 is a regular octagon is shown.

[0020] Figure 3 (a) is a schematic perspective view of a structure according to an embodiment of the present disclosure in which the insertion portion of the second member is inserted into the insertion portion of the first member. Figure 3 (b) is a cross-sectional view perpendicular to the insertion direction of a structure according to an embodiment of the present disclosure in which the insertion portion of the second member is inserted into the insertion portion of the first member.

[0021] The structure 3 is formed by inserting the insertion portion 21 of the second member 2 into the insertion portion 11 of the first member 1. Furthermore, the size of the formed structure 3 is determined according to the required strength and shape for the structure 3. Additionally, the materials of the first member 1 and the second member 2 can be different when constructing the structure 3.

[0022] Here, at the fitting portion of structure 3, the outer peripheral surface of the insertion portion 21 contacts the inner peripheral surface of the inserted portion 11. At this time, as... Figure 3 As shown in (b), the corner of the polygonal cross-section of the insertion part 21 perpendicular to the insertion direction (i.e., the corner of the outer peripheral surface of the insertion part 21) deforms along the shape of the inner peripheral surface of the inserted part 11. Here, by deforming the corner of the outer peripheral surface of the insertion part 21, pressure is applied to the inserted part 11 perpendicular to the insertion direction of the insertion part 21, and the fitting part is fixed.

[0023] Furthermore, it is preferable to form a gap V between the inserted portion 11 and the insertion portion 21 of the fitting portion. By forming a gap V in the fitting portion, it is possible to achieve, for example, an effect that makes it difficult for vibration to be transmitted to the second member 2 when vibration is applied to the first member 1. From the perspectives of ease of fitting and the formation of the gap V, it is preferable that the length of the perpendicular line from the axial position of the fitting portion to each side of the insertion portion 21 is shorter than the radius of the circular cross-section of the inserted portion 11.

[0024] As explained above, in the structure according to the embodiments of this disclosure, the components are fixed to each other by deforming the shape of the insertion portion along the inner circumferential surface of the inserted portion at the fitting portion. Therefore, it is possible to provide a structure that uses a fitting structure to easily fix the components to each other.

[0025] <Composition of Hollow Component Structures> Next, use Figure 4 The hollow component structure involved in the embodiments of this disclosure will be described. Figure 4 This is a schematic perspective view of the hollow component structure according to the embodiments of this disclosure. The hollow component structure 4 is constructed by connecting the first hollow components 51 and 52 via second hollow components 61 and 62. More specifically, the first hollow component 51 and the first hollow component 52 are connected via the second hollow component 61, and the first hollow component 51 and the first hollow component 52 are connected via the second hollow component 62.

[0026] The hollow component structure 4 can be used, for example, as a structure to reinforce the frame of a car, but its applications are not limited to this. Furthermore, the size and shape of the hollow component structure 4 are determined according to the size and shape of the part used for reinforcement. Therefore, the first hollow components 51 and 52 may not be parallel, and the second hollow components 61 and 62 may also not be parallel. Additionally, the first hollow components 51 and 52 may have different shapes, and the second hollow components 61 and 62 may also have different shapes. Furthermore, the material of the hollow component structure 4 is not particularly limited; for example, it can be a metal such as iron, aluminum, steel, or aluminum alloy.

[0027] Furthermore, in the hollow component structure 4, the connecting portions of the first hollow components 51 and 52 and the second hollow components 61 and 62 are connected by the interlocking structure of the aforementioned structure 3. Details of this interlocking structure are as described above and are therefore omitted.

[0028] Furthermore, the first hollow components 51 and 52 and the second hollow components 61 and 62 all have hollow structures. For example, the first hollow components 51 and 52 and the second hollow components 61 and 62 each have a through hole in the length direction to serve as a hollow structure. However, the inner diameter of the through hole can be determined from the strength and weight of the hollow component structure 4, and the inner diameter can also vary within the component.

[0029] As described above, the hollow component structure according to the embodiments of this disclosure is constituted by connecting a pair of first hollow components to a pair of second hollow components, and the connecting portion is fixed by the insertion portion deforming along the inner circumferential surface of the inserted portion. Thus, it is possible to provide a hollow component structure that can be fitted together using a fitting structure that allows components to be easily fixed to each other.

[0030] <Manufacturing Method of Hollow Component Structures> Next, use Figure 5 The manufacturing method of the hollow component structure according to the embodiments of this disclosure will be described. Figure 5This is a flowchart of a method for manufacturing a hollow component structure according to an embodiment of the present disclosure. The following steps are performed, for example, by a manufacturing apparatus having gripping members that hold and move the first hollow components 51, 52 and the second hollow components 61, 62 respectively.

[0031] First, insertion portions are formed on a pair of first hollow members 51 and 52 (step S1). Next, insertion portions are formed on a pair of second hollow members 61 and 62 (step S2).

[0032] In addition, Figure 5 In the process, step S1, in which the insertion portion is formed in a pair of first hollow members 51, 52, is positioned upstream of step S2, in which the insertion portion is formed in a pair of second hollow members 61, 62. However, step S1 can also be positioned downstream of step S2, or both can be performed simultaneously.

[0033] Next, the pair of first hollow members 51 and 52 are arranged at a predetermined interval (step S3). Furthermore, the interval between the first hollow members 51 and 52 is not particularly limited, but is determined in a manner that allows for a suitable connection of the first hollow members 51 and 52 via the second hollow members 61 and 62.

[0034] Next, a pair of first hollow members 51, 52 are connected via a pair of second hollow members 61, 62 (step S4). Here, the connection between the pair of first hollow members 51, 52 and the pair of second hollow members 61, 62 is connected and fixed by the fitting structure of the structure 3 described above.

[0035] As explained above, in the method for manufacturing a hollow component structure according to the embodiments of this disclosure, a pair of first hollow components are connected by a pair of second hollow components, and the connecting portion is fixed by the insertion portion deforming along the inner circumferential surface of the inserted portion. Thus, a method for manufacturing a hollow component structure that uses a fitting structure that allows for easy fixing of components to each other can be provided. Explanation of reference numerals in the attached figures

[0036] 1 First component 11 Inserted part 2 Second component 20 main bodies 21 Insertion section 3 Structures 4 Hollow Component Structure 51, 52 First hollow components 61, 62 Second hollow components V-shaped gap.

Claims

1. A structure having a fitting structure in which a second member having an insertion portion is inserted into and fitted into a first member having an insertion portion, wherein, The inner circumferential surface of the inserted part has a circular cross-section that is perpendicular to the insertion direction of the inserted part. The insertion part is a prism. When the insert portion is inserted into the inserted portion, the insert portion contacts the inner peripheral surface of the inserted portion. As the contact occurs, the insertion portion deforms along the shape of the inner circumferential surface of the inserted portion, thereby fixing the insertion portion within the inserted portion.

2. The structure according to claim 1, wherein, The number of vertices of the cross-sectional polygon of the insertion part perpendicular to the insertion direction is 5 to 8.

3. The structure according to claim 1 or 2, wherein, After the contact, a gap is formed between the insertion part and the inserted part.

4. A hollow component structure, wherein a pair of separately disposed first hollow components are connected via a pair of separately disposed second hollow components, wherein, The first hollow component has an insertion portion. The second hollow component has an insertion portion. The inner circumferential surface of the inserted part has a circular cross-section that is perpendicular to the insertion direction of the inserted part. The insertion part is a prism. When the insert portion is inserted into the inserted portion, the insert portion contacts the inner peripheral surface of the inserted portion. As the contact occurs, the insertion portion deforms along the shape of the inner circumferential surface of the inserted portion, thereby fixing the insertion portion within the inserted portion.

5. A method for manufacturing a hollow structural member, comprising: The step of forming the inserted portion in a pair of first hollow members; The step of forming an insertion portion in a pair of second hollow members; The step of separating and configuring the pair of first hollow components; as well as Regarding the pair of first hollow members, the step of connecting the two separated parts respectively via the second hollow member, wherein... The inner circumferential surface of the inserted part has a circular cross-section that is perpendicular to the insertion direction of the inserted part. The insertion part is a prism. When the insert portion is inserted into the inserted portion, the insert portion contacts the inner peripheral surface of the inserted portion. As the contact occurs, the insertion portion deforms along the shape of the inner circumferential surface of the inserted portion, thereby fixing the insertion portion within the inserted portion.

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