Bonded member and method for manufacturing bonded member

Abstract

The invention provides a joint member and a method for manufacturing the joint member. The joint member can joint a joint member to a hollow member through a simpler structure. The joining member according to the present invention is a joining member in which the end surface of the hollow member is joined in a state in which the end surface is close to the adjacent surface of the joint member. One of the end surface of the hollow member and the adjacent surface of the joint member has a first magnetic body, and the other of the end surface of the hollow member and the adjacent surface of the joint member has a second magnetic body attracted by the first magnetic body by magnetic force. The end surface of the hollow member and the adjacent surface of the joint member attract each other and are joined by a magnetic force acting between the first magnetic body and the second magnetic body, thereby forming a joined state.

Description

Technical Field

[0001] This invention relates to a joining component and a method for manufacturing the joining component. Background Technology

[0002] Patent document 1 discloses a connector component that is inserted into and welded to a hollow component.

[0003] Patent Document 1: Japanese Patent Application Publication No. 2010-084468 Summary of the Invention

[0004] In the connector component disclosed in the aforementioned patent document 1, it is necessary to spend time welding and fixing the hollow component to the connector component.

[0005] The present invention was made in view of this situation, and provides a joining component and a method for manufacturing the joining component, wherein the joining component can join a connector component to a hollow component with a simpler structure.

[0006] The joining component involved in this invention is a joining component formed by joining the end face of a hollow component close to the adjacent surface of a connector component. One of the end face of the hollow component and the adjacent surface of the connector component has a first magnetic body, and the other of the end face of the hollow component and the adjacent surface of the connector component has a second magnetic body attracted by the first magnetic body through magnetic force. The end face of the hollow component and the adjacent surface of the connector component attract each other and join through the magnetic force acting between the first magnetic body and the second magnetic body, thereby achieving a joined state.

[0007] In the joining component according to the present invention, both the hollow component and the connector component are made of magnetic materials. Therefore, in the joining component, the connector component 12 can be joined to the hollow component with a simple structure.

[0008] At least one of the first and second magnetic materials is a reversible magnetic material that can reversibly change between a magnetic state and a non-magnetic state by at least changing the temperature. The reversible magnetic material changes from the magnetic state to the non-magnetic state, thereby releasing the connection between the hollow component and the connector component. With this structure, the hollow component and the connector component can be separated using a simple design.

[0009] The reversible magnetic material can reversibly change between a magnetic state with a martensitic structure and a non-magnetic state with an austenitic structure. By heating, the reversible magnetic material changes from the magnetic state to the non-magnetic state, thereby releasing the connection between the hollow component and the joint component. By applying stress, the reversible magnetic material changes from the non-magnetic state to the magnetic state, thereby allowing the hollow component and the joint component to be joined. With this structure, the reversible change between the magnetic state with a martensitic structure and the non-magnetic state with an austenitic structure is possible through stress or heat, thus enabling repeated joining and disassembly of the hollow component and the joint component.

[0010] The manufacturing method of the joining component involved in this invention is a method for manufacturing a joining component, wherein the joining component is joined in a state where the end face of the hollow component is close to the adjacent surface of the connector component, wherein the end face of the hollow component and the adjacent surface of the connector component are attracted and joined by magnetic force between a first magnetic body disposed on one of the end face of the hollow component and the adjacent surface of the connector component and a second magnetic body disposed on the other of the end face of the hollow component and the adjacent surface of the connector component.

[0011] In the joining component according to the present invention, both the hollow component and the connector component are made of magnetic materials. Therefore, it is possible to manufacture a joining component by joining the connector component to the hollow component using a simple structure.

[0012] Invention Effects The present invention provides a joining component and a method for manufacturing the joining component, wherein the joining component can join the connector component to the hollow component with a simpler structure. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the joining component according to Embodiment 1.

[0014] Figure 2 This is a cross-sectional view of the joining component according to Embodiment 1.

[0015] Figure 3 This is a cross-sectional view of the joint component involved in the comparative example.

[0016] Figure 4 This is a cross-sectional view of the joining member according to Embodiment 1 and the joining member according to the comparative example.

[0017] Figure 5 This is a flowchart illustrating the process of joining the hollow component and the connector component.

[0018] Figure 6This is a flowchart of the process of disassembling the hollow components and the connector components. Detailed Implementation

[0019] The present invention will now be described through embodiments thereof, but the invention is not limited to these embodiments. Furthermore, not all structures described in the embodiments are necessarily necessary to solve the problem. For clarity, the following descriptions and drawings have been appropriately omitted and simplified. In the drawings, the same components are labeled with the same symbols, and repeated descriptions have been omitted as necessary.

[0020] Additionally, the right-handed xyz orthogonal coordinate system shown in the attached diagram is for ease of illustrating the positional relationships of the constituent elements. Typically, the positive z-axis points vertically upwards, and the xy-plane is horizontal.

[0021] (Implementation Method 1) <Jointing Components> First, refer to Figure 1 and Figure 2 The joining components involved in Embodiment 1 will be described. Figure 1 and Figure 2 This is a cross-sectional view of the joining component according to Embodiment 1. Figure 1 This is a cross-sectional view showing the state when the hollow component and the connector component are joined. Figure 2 It is a cross-sectional view showing the state when the hollow component and the joint component are disassembled.

[0022] Figure 1 and Figure 2 The connecting component 10 shown is used, for example, as a connecting component for a vehicle being assembled and disassembled at its transport destination. By using... Figure 1 and Figure 2 The connecting component 10 shown allows for the assembly and disassembly of vehicles, enabling them to be transported in a compact manner. Therefore, more vehicles can be transported in a single trip, thus reducing transportation costs. Furthermore, by using the connecting component 10 for vehicle assembly and disassembly, even if a part of the vehicle is damaged in an accident, repairs can be performed by replacing the connecting component 10. The connecting component 10 can be used, for example, as a vehicle frame component. The connecting component 10 can be used, for example, in the center console, roof, or trunk.

[0023] like Figure 1 and Figure 2 As shown, the connecting component 10 is composed of a hollow component 11 and a connector component 12. The hollow component 11 is, for example, a pipe. Figure 1 and Figure 2 The connector component 12 shown is a T-shaped connector component, but it is not limited to this and can also be an L-shaped or other connector component.

[0024] Figure 1 and Figure 2 The connector component 12 shown includes an insertion portion 121 and alignment portions 122 and 123. The insertion portion 121 has a protruding shape, and the front end of the protrusion can be inserted into a hole in the hollow component 11. When the insertion portion 121 is inserted into the hole in the hollow component 11, it can slide along the inner surface of the hollow component 11 in the x-axis direction. The alignment portions 122 and 123 are formed with holes to allow the insertion of piping (not shown).

[0025] <Joint State> refer to Figure 1 The joining state of the hollow component 11 and the connector component 12 will be described. For example... Figure 1 As shown, the insertion portion 121 of the connector component 12 is inserted into the hole of the hollow component 11, and the end face S11 of the hollow component 11 is close to the adjacent surface S12 of the connector component 12. Furthermore, as... Figure 1 As shown, the hollow component 11 and the connector component 12 are engaged when the end face S11 of the hollow component 11 is close to the adjacent face S12 of the connector component 12.

[0026] Here, the state in which the end face S11 of the hollow component 11 is close to the adjacent surface S12 of the connector component 12 includes a state in which the end face S11 is close to or abuts against the adjacent surface S12. Figure 1 In the example shown, the end face S11 is close to the adjacent face S12.

[0027] The joining method between the hollow component 11 and the connector component 12 will be described. One of the end face S11 of the hollow component 11 and the adjacent face S12 of the connector component 12 has a first magnetic body. The other of the end face S11 of the hollow component 11 and the adjacent face S12 of the connector component 12 has a second magnetic body. The first and second magnetic bodies are made of magnetic materials and attract each other by magnetic force when brought close together.

[0028] Hereinafter, the description will focus on the fact that the end face S11 of the hollow component 11 has a first magnetic body and the adjacent face S12 of the connector component 12 has a second magnetic body.

[0029] like Figure 1 As shown in the previous section, if the front end of the insertion portion 121 of the connector member 12 is inserted into the hole of the hollow member 11, the first magnetic body of the end face S11 of the hollow member 11 and the second magnetic body of the adjacent face S12 of the connector member 12 will attract each other by magnetic force. Therefore, the insertion portion 121 of the connector member 12 slides along the inner surface of the hollow member 11 in the negative x-axis direction. Furthermore, as... Figure 1As shown in the lower section, the end face S11 of the hollow component 11 is brought close to the adjacent face S12 of the connector component 12. Thus, the hollow component 11 and the connector component 12 are in a mating state.

[0030] Furthermore, this description assumes that the end face S11 of the hollow component 11 has a first magnetic element and the adjacent face S12 of the connector component 12 has a second magnetic element. However, this is not a limitation; the hollow component 11 as a whole may have a first magnetic element, and the connector component 12 may have a second magnetic element. In other words, in the connecting component 10, any structure is acceptable as long as the hollow component 11 has a first magnetic element on at least its end face S11 and the connector component 12 has a second magnetic element on at least its adjacent face S12.

[0031] Thus, in the joining member 10, since the hollow member 11 and the connector member 12 are made of magnetic materials, the joining state can be maintained. Therefore, in the joining member 10, the connector member 12 can be joined to the hollow member 11 with a simple structure.

[0032] <Decomposition> refer to Figure 2 The method for disassembling the hollow component 11 and the connector component 12 to release their joint state is described. Releasing the joint state of the hollow component 11 and the connector component 12 means disassembling the joint component 10 into the hollow component 11 and the connector component 12.

[0033] Here, at least one of the first magnetic body in the hollow component 11 and the second magnetic body in the connector component 12 is composed of a reversible magnetic body. A reversible magnetic body is a magnetic body that can reversibly change between a magnetic state with magnetism and a non-magnetic state with non-magnetism by at least changing the temperature. Details about reversible magnetic bodies will be described later. Hereinafter, the explanation will assume that the first magnetic body in the hollow component 11 is always a magnetic body with magnetism, and the second magnetic body in the connector component 12 is a reversible magnetic body.

[0034] Figure 2 The upper section shows the joining member 10 in a joined state. In the joined state, the second magnetic body of the connector member 12 is in a magnetic state. Here, if the temperature of the connector member 12 is changed, for example, by heating, the second magnetic body of the connector member 12 changes from a magnetic state to a non-magnetic state. As a result, the magnetic force acting between the first and second magnetic bodies disappears. And, as... Figure 2 As shown, if the insertion part 121 of the connector component 12 is slid along the inner surface of the hollow component 11 in the positive x-axis direction, the engagement state between the hollow component 11 and the connector component 12 is released.

[0035] Thus, in the joining member 10, at least one of the first magnetic body of the hollow member 11 and the second magnetic body of the connector member 12 is composed of a reversible magnetic body. Therefore, by changing the temperature at least, the reversible magnetic body changes from a magnetic state to a non-magnetic state, and the joining state of the hollow member 11 and the connector member 12 can be released. Therefore, in the joining member 10, the hollow member 11 and the connector member 12 can be separated with a simple structure.

[0036] <Reversible Magnetic Material> Here, we will explain reversible magnetic materials. Typical examples of reversible magnetic materials are stainless steels such as SUS304, which are magnetic materials that can reversibly change between a magnetic state with a martensitic structure and a non-magnetic state with an austenitic structure.

[0037] Taking SUS304 as an example, let's explain reversible magnetic materials in more detail. SUS304 typically has an austenitic structure and is in a non-magnetic state. By applying stress, the austenitic structure of SUS304 transforms into martensite (process-induced martensite). Thus, SUS304 acquires a martensitic structure and becomes magnetic. For example, at the destination, stress is applied by processing hollow components or joint components made of SUS304, causing these components to change from a non-magnetic state to a magnetic state.

[0038] On the other hand, SUS304, which has a martensitic structure, undergoes a martensitic transformation (austenitization) to an austenitic structure through heating. The heat treatment is, for example, a solution treatment. As a result, SUS304 acquires an austenitic structure and becomes non-magnetic. For example, at the destination, hollow components or joint components made of SUS304 can be heat-treated to change from a magnetic state to a non-magnetic state.

[0039] Thus, SUS304 can reversibly change between a magnetic state with a martensitic structure and a non-magnetic state with an austenitic structure through stress or heat.

[0040] Furthermore, taking SUS304 as an example, a reversible magnetic material is described here, illustrating how its microstructure can be reversibly altered by stress or heat, causing it to change between a magnetic and non-magnetic state. However, this is not a limitation; a reversible magnetic material can also be any magnetic material whose microstructure can be altered by changing the temperature, thereby causing it to reversibly change between a magnetic and non-magnetic state.

[0041] Taking SUS304 as an example, SUS304 undergoes a sub-zero treatment, transforming its austenitic structure (non-magnetic state) into a martensite structure (magnetic state). Conversely, SUS304 undergoes a solution treatment, transforming its martensite structure (magnetic state) into austenitic structure (non-magnetic state). Thus, SUS304's microstructure can be altered by changing the temperature, allowing it to reversibly change between magnetic and non-magnetic states.

[0042] In addition, the SUS304 mentioned above is an example of a reversible magnetic material. A reversible magnetic material can be a material that can change between a magnetic state and a non-magnetic state by at least changing the temperature, such as carbon steel.

[0043] <The jointing components involved in the comparative example> Next, refer to Figure 3 The connecting parts involved in the comparative example will be described. Figure 3 This is a cross-sectional view of the joining component involved in the comparative example. (Compared to...) Figure 1 Compared to the connecting part 10 shown, Figure 3 The connectors of the connecting parts 20 and 30 shown are different.

[0044] exist Figure 3 In the connector component 22 shown, the length of the insertion portion 221 in the direction of the central axis C1 (x-axis direction) of the hollow component 11 is configured to be greater than that of the insertion portion 221 in the direction of the central axis C1 (x-axis direction). Figure 1 The connector component 12 shown is short. And, as... Figure 3 As shown, a gap d1 is provided from the end face S221 of the insertion part 221 to the inner surface IS11 of the hollow part 11. By providing the gap d1, the connector part 22 can be easily inserted into the hollow part 11.

[0045] exist Figure 3 In the shown joining component 20, the end face S11 of the hollow component 11 and the end face S22 of the joint component 22 are welded together to join the hollow component 11 and the joint component 22. This welding ensures the strength of the central axis C1 of the hollow component 11 relative to the approximately vertical direction d2 in the joining component 20.

[0046] exist Figure 3 In the connector component 32 shown, the length of the insertion portion 321 in the direction of the central axis C1 of the hollow component 11 is configured to be greater than that of the insertion portion 321. Figure 1 The connector member 12 shown is long. Therefore, in the joining member 30, the contact surface between the hollow member 11 and the connector member 32 is increased, ensuring the strength of the hollow member 11 in the direction of its central axis C1 (x-axis direction). Furthermore, in the joining member 30, no gap is provided from the end face S321 of the insertion portion 321 to the inner surface IS11 of the hollow member 11.

[0047] exist Figure 3 In the shown coupling component 30, with Figure 3 Similarly, in order to join the hollow component 11 to the connector component 32, the end face S11 of the hollow component 11 and the end face S32 of the connector component 32 are welded together.

[0048] <The effect of using magnetic force for bonding> right Figure 3 The shown joint component 20 and Figure 1 The mating parts 10 shown are compared. Figure 1 In the shown connecting member 10, if the hollow member 11 and the connector member 12 are brought close together, they are attracted to each other by magnetic force, and the insertion part 121 is guided to the hole of the hollow member 11, thus eliminating the need for... Figure 3 The gap d1 shown. That is, in the engaging member 10, even if no gap is provided from the end face of the insertion part 121 to the inner surface of the hollow member 11, they will be attracted to each other by magnetic force, so it can be said that it is easy to insert.

[0049] Furthermore, in Figure 1 In the shown connecting member 10, the hollow member 11 and the connector member 12 are magnetically joined, therefore as Figure 3 As shown in the diagram, the joining component 20 does not require welding for fixation. In the joining component 10, no welding work is required at the transport destination, thus reducing operating costs.

[0050] Furthermore, in Figure 1 In the shown joint component 10, the hollow component 11 and the joint component 12 are magnetically joined, so that even without welding or adhesive fixing, the strength in the approximately vertical direction d2 relative to the central axis C1 of the hollow component 11 can be ensured.

[0051] and, Figure 3 The shown joint component 20 is fixed by welding or adhesive, and therefore cannot be disassembled. In contrast, in Figure 1 In the shown joining component 10, it can be decomposed by changing the temperature of at least one of the hollow component 11 and the joint component 12, causing it to change between a magnetic state and a non-magnetic state. Therefore, it can be said that the joining component 10 can be joined and decomposed any number of times, making it a highly convenient joining component.

[0052] right Figure 3 The shown joint component 30 and Figure 1 The mating parts 10 shown are compared. Figure 1 In the shown connecting member 10, the length of the insertion portion 121 in the direction of the central axis C1 of the hollow member 11 is greater than that of the insertion portion 121. Figure 3The connector component 32 shown is short. In the joining component 10, the hollow component 11 and the connector component 12 are joined by magnetic force, so the strength of the hollow component 11 in the direction of the central axis C1 (x-axis direction) can be ensured even without increasing the contact area between the hollow component 11 and the connector component 12.

[0053] Here, as with the connecting member 30, if the length of the axial insertion portion 321 of the hollow member 11 is increased, the connector member 32 is required to have strict dimensional accuracy in terms of appropriate cylindricality and coaxiality relative to the inner diameter of the hollow member 11, which makes it difficult to process.

[0054] In contrast, Figure 1 In the shown connecting member 10, the length of the axial insertion portion 121 of the hollow member 11 is greater than that of the connecting member 10. Figure 3 The connector component 32 shown is short, therefore easier to manufacture compared to the mating component 30. Additionally, in Figure 1 In the shown connecting member 10, the length of the axial insertion portion 121 of the hollow member 11 is preferably the same as the inner diameter of the hollow member 11.

[0055] Thus, the joining member 10 is a joining member that ensures the strength of the hollow member 11 in the axial direction and in the direction substantially perpendicular to the axial direction of the hollow member 11. Furthermore, the joining member 10 does not require welding or adhesive fixation, and therefore can be joined and disassembled any number of times.

[0056] Alternatively, the joining component 10 can be joined by welding the hollow component 11 and the joint component 12 or by using an adhesive to further ensure the strength of the hollow component 11 in the axial direction and in the direction substantially perpendicular to the axial direction of the hollow component 11.

[0057] Next, refer to Figure 4 The joining parts 10 and 20 are compared. Figure 4 This is a cross-sectional view of the joining member according to Embodiment 1 and the joining member according to the comparative example. Figure 4 The upper section is a cross-sectional view of the joining component according to Embodiment 1. Figure 4 The lower section is a cross-sectional view of the joint component involved in the comparative example.

[0058] like Figure 4 As shown, a specified distance L1 is ensured between the joint components 12 or between the joint components 22, and a hollow component 11 is provided between the joint components 12 or between the joint components 22.

[0059] like Figure 4As shown in the lower section, in the joining member 20, on the right side, the end face S11 abuts against the adjacent face S12. In the joining member 20, on the left side, a gap is provided between the end face S11 and the adjacent face S12. Thus, in the joining member 20, there is no gap on the right side and a gap on the left side, therefore the strength on the left side is lower than that on the right side, resulting in uneven overall strength in the joining member 20. Therefore, in the joining member 20, due to the presence of areas with reduced strength, there is a possibility of breakage.

[0060] On the other hand, such as Figure 4 As shown in the upper section, in the joining member 10, on the right side, the end face S11 is close to the adjacent face S12. In the joining member 10, on the left side, the end face S11 and the adjacent face S12 are similarly close to each other as on the right side. Thus, in the joining member 10, the hollow member 11 and the connector member 12 are attracted to each other by magnetic force, and regardless of whether it is on the left or right side, the end face S11 and the adjacent face S12 are separated by the same predetermined distance and are close together. Therefore, in the joining member 10, the overall strength becomes uniform. Therefore, in the joining member 10, no parts with reduced strength are generated, thus preventing breakage.

[0061] <Manufacturing Method> refer to Figure 5 , Figure 6 The manufacturing method of the mating parts is explained. Figure 5 , Figure 6 This is a flowchart illustrating the manufacturing method of the joining components. Figure 5 This is a flowchart of the process of joining the hollow component and the connector component. Figure 6 This is a flowchart of the process of disassembling the hollow component and the connector component.

[0062] The following description assumes that the hollow component has a first magnetic body on its end face and the connector component has a second magnetic body on its adjacent surface. Furthermore, the description assumes that the first magnetic body is a magnetic body that always possesses magnetism and the second magnetic body is a reversible magnetic body.

[0063] like Figure 5 As shown, the front end of the insertion part of the connector component is inserted into the hole of the hollow component (step ST1). Thus, the first magnetic body on the end face of the hollow component and the second magnetic body on the adjacent face of the connector component attract each other magnetically, and the insertion part of the connector component slides along the inner surface of the hollow component within the hole of the hollow component. This results in a joined state where the hollow component and the connector component are joined (step ST2). In this way, a joined component formed by the joining of the hollow component and the connector component can be manufactured.

[0064] like Figure 6As shown, the reversible magnetic body (joint component) is heated (step ST3). This causes the joint component to change from a magnetic state to a non-magnetic state. Consequently, the magnetic force acting between the first magnetic body (hollow component) and the second magnetic body (joint component) disappears. Then, the connection between the hollow component and the joint component is released (step ST4).

[0065] Thus, the hollow component and the connector component are disassembled.

[0066] In addition, although Figure 5 , Figure 6 Not illustrated, but when the disassembled hollow component and connector component are put back into a joined state, the following process is performed. First, the temperature of the reversible magnetic body (connector component) is changed, causing it to change from a non-magnetic state to a magnetic state. As a result, magnetic force is once again applied between the first magnetic body (hollow component) and the second magnetic body (connector component). Therefore, the hollow component and connector component are once again joined by the magnetic force acting between the first and second magnetic bodies.

[0067] Thus, by using a simple structure in which both the hollow component and the connector component are magnetic, it is possible to manufacture a joint component formed by joining the connector component to the hollow component. Furthermore, by using at least one of the magnetic components in the hollow component and the connector component as a reversible magnetic component, it is possible to manufacture a joint component capable of separating the hollow component and the connector component.

[0068] Furthermore, the present invention is not limited to the above-described embodiments, and appropriate modifications can be made without departing from its spirit.

[0069] Symbol Explanation 10, 20, 30 - Joining parts, 11 - Hollow parts, 12, 22, 32 - Connector parts, 121, 221, 321 - Insertion parts, C1 - Central shaft, d1 - Gap, IS11 - Inner surface, S11 - End face, S12 - Adjacent surface, S221 - End face, S321 - End face.

Claims

1. A joined member which is a joined member joined in a state where an end face of a hollow member is close to an adjacent face of a joint member, characterized by that, one of the end face of the hollow member and the adjacent face of the joint member has a first magnetic body, the other of the end face of the hollow member and the adjacent face of the joint member has a second magnetic body which is attracted by the first magnetic body by a magnetic force, and the end face of the hollow member and the adjacent face of the joint member are attracted to each other by the magnetic force acting between the first magnetic body and the second magnetic body, thereby making the hollow member and the joint member into a joined state.

2. The joined member according to claim 1, characterized in that, at least one of the first magnetic body and the second magnetic body is a reversible magnetic body which is reversibly changed between a magnetic state having magnetism and a non-magnetic state having no magnetism by changing at least temperature, and the reversible magnetic body is changed from the magnetic state to the non-magnetic state, thereby releasing the joined state of the hollow member and the joint member.

3. The joined member according to claim 2, characterized in that, the reversible magnetic body is reversibly changed between a magnetic state having a martensite structure and a non-magnetic state having an austenite structure, the reversible magnetic body is changed from the magnetic state to the non-magnetic state by heating, thereby releasing the joined state of the hollow member and the joint member, and the reversible magnetic body is changed from the non-magnetic state to the magnetic state by applying stress, thereby making the hollow member and the joint member into the joined state.

4. A manufacturing method of a joined member which is a joined member joined in a state where an end face of a hollow member is close to an adjacent face of a joint member, the manufacturing method characterized by that, by a magnetic force acting between a first magnetic body provided on one of the end face of the hollow member and the adjacent face of the joint member and a second magnetic body provided on the other of the end face of the hollow member and the adjacent face of the joint member, the end face of the hollow member and the adjacent face of the joint member are attracted to each other, and the hollow member and the joint member are joined. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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