Adhesion method and heating element

Abstract

To provide a bonding method and a heating member capable of uniformly heating a member to be bonded in a short period of time when performing a thermocompression bonding of a relaxation member to the member to be bonded.SOLUTION: A bonding method according to the present invention is a bonding method for bonding a relaxation member to a member to be bonded. The method is configured in that: a surrounding state of a heating region caused by each heating portion is obtained by connecting each heating portion of a plurality of constituent members constituting a heating member in series to a heating region including a bonding surface of the relaxation member of the member to be bonded; the heating portion is caused to generate heat to heat the heating region by energizing the heating member; and the relaxation member is bonded to the member to be bonded by pressing the relaxation member and the member to be bonded after heating.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a bonding method and a heating element. [Background technology]

[0002] A stabilizer used in a vehicle or the like is attached to the vehicle to stabilize the vehicle's posture. A bushing is provided at the connection point of the stabilizer to the vehicle body as a damping member that dampens vibrations of the stabilizer transmitted from the road surface or the like, and the stabilizer and the vehicle body are connected via the bushing. The bushing is formed using an elastic material such as rubber and suppresses transmission of vibrations of the stabilizer to the body. Generally, the bushing and the stabilizer are bonded by heating the bonding portion of the stabilizer body and crimping the bushing to the bonding portion. In this case, the stabilizer body is heated using an induction heating coil (see, for example, Patent Document 1).

[0003] Fig. 15 is a diagram showing the configuration of a conventional induction heating coil. Fig. 15(a) is a diagram showing the induction heating coil 500 as seen from a direction perpendicular to the longitudinal direction of the stabilizer body 501. Fig. 15(b) is a diagram showing the induction heating coil 500 as seen from the longitudinal direction of the stabilizer body 501. The induction heating coil 500 is made by bending a rod-shaped member into a U-shape so as to sandwich the stabilizer body, and generates heat by passing a high-frequency current through it. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6832312 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the induction heating coil described in Patent Document 1 has a structure in which a portion is open in the space that accommodates the stabilizer body 501. For example, in (b) of Fig. 15, the left side of the stabilizer body 501 is structured to be difficult to heat, which causes heating of the stabilizer body 501 to be uneven, and it takes time to heat up to a uniform temperature.

[0006] The present invention has been made in consideration of the above, and aims to provide a bonding method and a heating member that can heat the bonded member uniformly in a short time when thermocompressing a relaxation member to the bonded member. [Means for solving the problem]

[0007] In order to solve the above-mentioned problems and achieve the object, the bonding method of the present invention is a bonding method for bonding a relaxation member to a bonded member, characterized in that each heating section of a plurality of constituent members constituting the heating member is connected in series to a heating area including the bonding surface of the relaxation member of the bonded member, so that the heating area is surrounded by each heating section, and by passing electricity through the heating members, the heating sections generate heat to heat the heating area, and the relaxation member and the bonded member after heating are pressed together to bond the relaxation member to the bonded member.

[0008] In addition, the bonding method of the present invention is characterized in that, in the above invention, the heating section has a concavely curved curved surface, and the heating area is placed in an internal space formed by each curved surface of each heating section to heat the heating area.

[0009] In addition, the bonding method according to the present invention is characterized in that, in the above invention, the heating element is composed of three components, and the heating area is placed in the internal space formed by arranging the three heating sections in a row, and the heating area is heated.

[0010] In addition, the bonding method of the present invention is characterized in that, in the above invention, the heating member is composed of two constituent members, and the heating area is placed in the internal space formed by contacting one end of the two heating sections, and the heating area is heated.

[0011] Furthermore, the bonding method according to the present invention is characterized in that, in the above invention, the heating section has a curved surface consisting of a first curved surface provided on both ends, a second curved surface having a larger radius of curvature than the first curved surface, and a connecting surface connecting the first and second curved surfaces, and the heating region is placed in an internal space formed by the curved surfaces of each heating section and having a reduced diameter at both ends, and the heating region is heated.

[0012] Furthermore, the heating member according to the present invention is a heating member that heats a heating area including an adhesive surface on an adherend to which a relaxation member is adhered, and is characterized in that it is composed of a plurality of components having conductive heating portions, and by connecting the heating portions of each component in series, an internal space that accommodates the heating area is formed. [Effects of the Invention]

[0013] According to the present invention, when the relaxation member is thermocompression bonded to the bonded member, the bonded member can be uniformly heated in a short time. [Brief explanation of the drawings]

[0014] [Figure 1] FIG. 1 is a perspective view showing an example of a stabilizer manufactured in the first embodiment of the present invention. [Figure 2] FIG. 2 is a diagram showing a configuration in the vicinity of a bushing member in the stabilizer shown in FIG. [Figure 3] FIG. 3 is a diagram for explaining a bushing bonding process to the stabilizer shown in FIG. [Figure 4] FIG. 4 is a diagram showing a configuration of a heating member that heats the main body of the stabilizer in the first embodiment of the present invention. [Figure 5]FIG. 5 is a view seen from the direction of arrow A shown in FIG. [Figure 6] FIG. 6 is a view seen from the direction of arrow B shown in FIG. [Figure 7] FIG. 7 is a cross-sectional view illustrating a heating portion of the heating member according to the first embodiment of the present invention. [Figure 8] FIG. 8 is a diagram illustrating a state in which the heating member according to the first embodiment of the present invention is used. [Figure 9] FIG. 9 is a cross-sectional view illustrating a heating portion of the heating member according to the first embodiment of the present invention. [Figure 10] FIG. 10 is a diagram for explaining the temperature difference between the heating member according to the first embodiment and the conventional heating member when heating the stabilizer. [Figure 11] FIG. 11 is a cross-sectional view illustrating a heating portion of a heating member according to a second embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view illustrating a heating portion of a heating member according to a third embodiment of the present invention. [Figure 13] FIG. 13 is a cross-sectional view illustrating a heating portion of a heating member according to a fourth embodiment of the present invention. [Figure 14] FIG. 14 is a perspective view illustrating a configuration of a heating member according to a fifth embodiment of the present invention. [Figure 15] FIG. 15 is a diagram showing the configuration of a conventional induction heating coil. DETAILED DESCRIPTION OF THE INVENTION

[0015] Hereinafter, embodiments for carrying out the present invention (hereinafter referred to as "embodiments") will be described with reference to the accompanying drawings. Note that the drawings are schematic, and the relationship between the thickness and width of each part, the thickness ratio of each part, etc. may differ from the actual ones, and the drawings may also include parts with different dimensional relationships and ratios.

[0016] (Embodiment 1) Fig. 1 is a perspective view showing an example of a stabilizer manufactured in the first embodiment of the present invention. Fig. 2 is a diagram showing the configuration of the stabilizer shown in Fig. 1 near a bushing member. The stabilizer 1 is made of metal or various fibers (e.g., carbon fiber). The stabilizer 1 has a main body 2 that is bent at both ends and extends linearly in the center, and a bushing member 3 attached to the main body 2.

[0017] The main body 2 extends in a columnar shape, for example, a cylindrical shape, with both ends bent. The main body 2 may be solid or hollow.

[0018] For example, when the stabilizer 1 is installed in an automobile, one end is connected to one of the left and right suspensions, and the other end is connected to the other suspension. In this case, each end is fixed to the suspension via a through-hole. The stabilizer 1 is also fixed to the vehicle body via a bushing member 3.

[0019] The stabilizer 1 is produced by processing a base material. For example, after bending a columnar base material, pressure is applied to both ends of the base material to form a flat plate, and through-holes are formed in each end.

[0020] The bushing member 3 includes a bushing 31 and a bracket 32 ​​. The bracket 32 ​​is attached to the vehicle body via screws or the like, and supports the main body 2 via the bushing 31 .

[0021] The bushing 31 is made of an elastic material such as rubber or elastic resin, and functions as a damping member that damps vibrations of the stabilizer 1 transmitted from the road surface, etc. The bushing 31 is made of two members (a first member 301 and a second member 302). The bushing 31 is formed by sandwiching the main body 2 between the first member 301 and the second member 302 and adhering them to the main body 2.

[0022] Next, the bonding process for bonding the bushing 31 to the main body 2 will be described with reference to Fig. 3 to Fig. 8. Fig. 3 is a diagram for explaining the process for bonding the bushing to the stabilizer shown in Fig. 1.

[0023] First, the bushing 31 is cleaned. For example, as shown in Fig. 3(a), the first member 311 and the second member 312 constituting the bushing 31 are cleaned in a cleaning machine 101. After cleaning, the first member 311 and the second member 312 are subjected to a drying process.

[0024] After the cleaning process, an adhesive is applied to the first member 311 and the second member 312 (adhesive application step). For example, as shown in FIG. 3(b), a nozzle 102 applies adhesive to the bonding surfaces of the main body portions of the first member 311 and the second member 312. After the adhesive is applied, the first member 311 and the second member 312 are subjected to a drying process. Thereafter, the first member 311 and the second member 312 are set in a jig 103. The jig 103 is composed of, for example, a first jig 103a that holds the first member 311 and a second jig 103b that holds the second member 312.

[0025] Meanwhile, the main body 2 is subjected to plasma treatment (surface processing step). The surface of the main body 2 is treated by plasma treatment. For example, as shown in FIG. 3(d), the surface of the main body 2 is treated by plasma nozzle 104. This plasma treatment may be performed, for example, in an unheated space at room temperature, or in a space heated to room temperature or higher.

[0026] After the plasma treatment, the main body 2 is subjected to a heat treatment (heating step). In the heat treatment, a region of the main body 2 including the bonding surface to which the bushing 31 is bonded is heated. For example, as shown in FIG. 3(e), a heating member 200 heats a heating region R including the main body bonding surfaces of the first member 311 and the second member 312. H For example, in the heat treatment, two heating regions R, which are the bonding regions of the bushing 31 of the main body 2, are heated. HEach of these is heated for, for example, several tens of seconds using the heating member 200. The temperature for the heat treatment is set appropriately depending on the type of bushing 31 and adhesive. In the heat treatment, the target temperature of the heated portion is set in the range of 150°C to 300°C, for example.

[0027] The first member 311 and the second member 312 are set in the jig 103, and the bushing is assembled after the main body 2 has been subjected to a heat treatment (see FIG. 3(f)). The first jig 103a holding the first member 311 and the second jig 103b holding the second member 312 are set in the heating region R of the main body 2. H At this time, adhesive 313 is applied to the portions of the first member 311 and the second member 312 that are to be bonded to the main body portion 2 (see FIG. 3(e)).

[0028] After the jig 103 is assembled to the main body 2, a pressure-bonding and holding process is performed to bond the bushing 31 to the main body 2. In the pressure-bonding and holding process, the assembled state is held for a time until vulcanization bonding is completed. At this time, the main body 2 and the bushing 31 are bonded together by pressure and the heat of the main body 2.

[0029] Thereafter, the first jig 103a is removed from the first member 311, and the second jig 103b is removed from the second member 312, thereby obtaining the stabilizer 1 with the bushing 31 fixed to the main body 2 (see FIG. 3(g)).

[0030] Next, the heating member 200 used to heat the main body 2 will be described with reference to Figs. 4 to 9. Fig. 4 is a diagram showing the configuration of the heating member that heats the main body of the stabilizer in embodiment 1 of the present invention. Fig. 5 is a view seen from the direction of arrow A shown in Fig. 4. Fig. 6 is a view seen from the direction of arrow B shown in Fig. 4. Fig. 7 is a cross-sectional view for explaining the heating portion of the heating member according to embodiment 1 of the present invention.

[0031] The heating member 200 includes a first heating member 201, a second heating member 202, and a third heating member 203. The first heating member 201 to the third heating member 203 are combined together to heat the main body 2.

[0032] The first heating member 201 includes a heating portion 211. The heating portion 211 is electrically conductive and arch-shaped. The heating portion 211 has an inner peripheral portion 211a formed by a concave curved surface on the inner peripheral side. Furthermore, two end portions 211b at both ends of the heating portion 211, which come into contact with the second heating member 202 and the third heating member 203, respectively, each have a V-shaped groove shape formed by two inclined surfaces 2111.

[0033] The second heating member 202 includes a heating portion 221 and a cable 222. The heating portion 221 is electrically conductive and arch-shaped. The heating portion 221 has an inner peripheral portion 221a formed by a concave curved surface on the inner peripheral side. One end portion of the heating portion 221, end portion 221b that comes into contact with the first heating member 201, has two inclined surfaces 2211 and a flat portion 2212 that connects the two inclined surfaces 2211. The other end portion of the heating portion 221 that faces the third heating member 203 is flat.

[0034] The third heating member 203 includes a heating unit 231 and a cable 232. The heating unit 231 is electrically conductive and arch-shaped. The heating unit 231 has an inner peripheral portion 231a formed by a concave curved surface on the inner peripheral side. One end portion of the heating unit 231, an end portion 231b that comes into contact with the first heating member 201, has two inclined surfaces 2311 and a flat portion 2312 that connects the two inclined surfaces 2311. The other end portion of the heating unit 231 that faces the second heating member 202 is flat. The cables 222 and 232 may have piping through which a cooling medium flows.

[0035] FIG. 8 is a diagram illustrating a state in which the heating element according to the first embodiment of the present invention is used. FIG. 9 is a cross-sectional view illustrating the heating elements of the heating element according to the first embodiment of the present invention, taken along line CC in FIG. 8. When the heating elements 211 to 231 of the first to third heating elements are arranged in a row in the order of heating elements 221, 211, and 231, the heating elements 221, 211, and 231 are connected in series, and a cylindrical internal space with a portion open (here, between heating elements 221 and 231) is formed by the inner circumferential portions 211a to 231a. At this time, one end of heating element 211 contacts end 221b of heating element 221, and the other end of heating element 211 contacts end 231b of heating element 231. Furthermore, the opposing ends of heating element 221 and heating element 231 are not in contact with each other.

[0036] End 211b of heating portion 211 and end 221b of heating portion 221 are in contact with each other such that inclined surfaces 2111 and 2211 engage with each other. Furthermore, end 211b of heating portion 211 and end 231b of heating portion 231 are in contact with each other such that inclined surfaces 2111 and 2311 engage with each other.

[0037] 8, when electricity is applied to the heating member 200, for example, current flows from the cable 222 to the heating portion 221, the heating portion 211, the heating portion 231, and the cable 232 in this order. This electricity application causes each heating portion to generate heat.

[0038] In the heating treatment, the bushing 31 of the main body 2 is attached to the internal space formed by the heating parts 211 to 231, and the heating part 211 to 231 is heated by passing electricity through the heating member 200. H Heating area R H In the heating section, the entire circumference is surrounded and heated by the heating parts 211 to 231 (see, for example, FIG. 8).

[0039] FIG. 10 is a diagram illustrating the temperature difference in the heated portion when the stabilizer is heated using the heating element according to the first embodiment and a conventional heating element. FIG. 10 is a schematic diagram illustrating the temperature distribution when heating is performed using the heating element according to the present embodiment and a conventional heating element (e.g., induction heating coil 500). In FIG. 10, curve L1 shows the change over time in the maximum temperature difference in the temperature distribution in the main body 2 when the main body 2 is heated using the heating element 200. Curve L2 shows the change over time in the maximum temperature difference in the temperature distribution in the main body 2 when the main body 2 is heated using a conventional heating element. The temperature difference here is the difference in temperature on the same circumference of the main body 2 or in the circumferential direction. When heating is performed using the heating element 200, the main body 2 can be heated uniformly, as shown by curve L1. On the other hand, in the case of a conventional structure in which the heating efficiency is low in some areas, temperature differences occur due to uneven heating, and it takes time for the temperature to become uniform.

[0040] In the present embodiment 1, the main body 2 is heated using the heating member 200 having heating portions 211-231 that form a cylindrical internal space, thereby making it possible to perform heating that suppresses an increase in the temperature difference that occurs within the main body 2. According to the present embodiment 1, when thermocompression bonding the bushing 31, which is a relaxation member, to the main body 2, which is an adherend member, the adherend member can be heated uniformly in a short time.

[0041] Furthermore, in embodiment 1, the end portions where the heating portions 211 to 231 come into contact with each other are shaped as inclined surfaces with uneven surfaces, and the heating portions 221 and 231 function as wedges relative to the heating portion 211, thereby stabilizing the contact state between the heating portions and ensuring reliable current flow.

[0042] In addition, in embodiment 1, the main body 2 is heated by combining three heating elements (first heating element 201 to third heating element 203), which makes it easy to attach and detach the heating elements to and from the main body 2 and allows the main body 2 to be heated quickly and uniformly.

[0043] Furthermore, in embodiment 1, each heating section 211 to 231 is formed by processing a plate material, and is more rigid and less likely to deform than conventional induction heating coils that are made by deforming a rod-shaped member or a pipe, making it more resistant to impacts and improving durability for repeated use.

[0044] (Embodiment 2) Next, a second embodiment of the present invention will be described with reference to Fig. 11. Fig. 11 is a cross-sectional view for explaining a heating part of a heating member according to the second embodiment of the present invention. Note that the same components as those according to the first embodiment are denoted by the same reference numerals.

[0045] The heating element according to the second embodiment differs from the heating element according to the first embodiment in the shape of the contact portion between the heating elements. Fig. 11 shows the configuration of heating element 211 of the first heating element and heating element 221 of the second heating element, but the third heating element side is similar.

[0046] Ends 211c and 221c of heating units 211 and 221 according to embodiment 2 are planar to each other. When the first to third heating members are assembled, ends 211c and 221c come into contact with each other to form a current conduction path.

[0047] In the second embodiment, similarly to the first embodiment, the main body 2 is heated using the heating member 200 having the heating portions 211-231 that form a cylindrical internal space, thereby making it possible to perform heating that suppresses an increase in the temperature difference that occurs within the main body 2. According to the second embodiment, when the bushing 31, which is a stress-relieving member, is thermocompression-bonded to the main body 2, which is an adherend member, the adherend member can be heated uniformly in a short time.

[0048] (Embodiment 3) Next, a third embodiment of the present invention will be described with reference to Fig. 12. Fig. 12 is a cross-sectional view for explaining a heating part of a heating member according to the third embodiment of the present invention. Note that the same components as those according to the first embodiment are denoted by the same reference numerals.

[0049] The heating member according to the third embodiment differs from the heating member according to the first embodiment in the shape of the contact portion between the heating members. Specifically, the shape of the end of the heating member 221 of the second heating member 202 differs from that of the first embodiment. While Fig. 12 shows the configuration of the heating member 211 of the first heating member and the heating member 221 of the second heating member, the third heating member side is similar.

[0050] End 221d of heating unit 221 according to the third embodiment has a curved surface. When first to third heating members are assembled, ends 211b and 221d come into contact with each other to form a current conduction path. At this time, inclined surface 2111 of end 211b and the curved surface of end 221d mesh with each other and come into contact.

[0051] In the third embodiment, similarly to the first embodiment, the main body 2 is heated using the heating member 200 having the heating portions 211-231 that form a cylindrical internal space, thereby making it possible to perform heating that suppresses an increase in the temperature difference that occurs within the main body 2. According to the third embodiment, when the bushing 31, which is a stress-relieving member, is thermocompression-bonded to the main body 2, which is an adherend member, the adherend member can be heated uniformly in a short time.

[0052] (Fourth embodiment) Next, a fourth embodiment of the present invention will be described with reference to Fig. 13. Fig. 13 is a cross-sectional view for explaining a heating portion of a heating member according to the fourth embodiment of the present invention, and corresponds to the cross section taken along line CC shown in Fig. 8. Note that the same components as those according to the first embodiment are denoted by the same reference numerals.

[0053] The heating element according to the fourth embodiment differs from the heating element according to the first embodiment in the shape of the inner periphery of the heating element. While FIG. 13 shows the configuration of heating element 211 of the first heating element and heating element 231 of the third heating element, the second heating element is similar. The inner periphery of heating elements 211-231 (inner peripheries 211d and 231c in FIG. 13) has a first curved surface provided at both ends, a second curved surface having a larger radius of curvature than the first curved surface, and a connecting surface connecting the first and second curved surfaces. For example, heating element 211 has first curved surface 211e, second curved surface 211f, and connecting surface 211g. Heating element 231 has first curved surface 231d, second curved surface 231e, and connecting surface 231f. The outer peripheral surface of each heating part is uniformly curved, and the thickness (cross-sectional area) varies from one first curved surface to the other curved surface depending on the difference in the positions where the first curved surface and the second curved surface are formed. Specifically, in Figure 13, the thickness is maximum at the position where the first curved surface is formed and minimum at the position where the second curved surface is formed.

[0054] When the heating portions 211 to 231 of the first to third heating members are assembled, the inner circumferential portions 211d, 211a, and 231c form a stepped cylindrical internal space. Specifically, the inner circumferential portions 211d, 211a, and 231c form an internal space with reduced diameter at both ends of the internal space corresponding to the first curved surface, where the diameter at both ends is smaller than the diameter at the center of the internal space corresponding to the second curved surface. At this time, one end of the heating portion 211 contacts an end of the heating portion 221, and the other end of the heating portion 211 contacts an end of the heating portion 231. Furthermore, the opposing ends of the heating portion 221 and the heating portion 231 are not in contact with each other.

[0055] In the fourth embodiment, similarly to the first embodiment, the main body 2 is heated using the heating member 200 having the heating portions 211-231 that form a cylindrical internal space, thereby making it possible to perform heating that suppresses an increase in the temperature difference that occurs within the main body 2. According to the fourth embodiment, when the bushing 31, which is a stress-relieving member, is thermocompression-bonded to the main body 2, which is an adherend, the adherend can be heated uniformly in a short time.

[0056] In the fourth embodiment, the inner circumferential portions 211d, 211a, and 231c form a cylindrical internal space whose diameter is reduced at both ends, and the main body portion 2 is heated by this internal space. In this internal space, the distance between the inner circumferential surface and the main body portion 2 is different at both ends and the center in the penetration direction of the internal space (hereinafter referred to as the axial direction of the heating portion). When the main body portion 2 is heated, the main body portion 2 outside the heating portion is in a cooled state, so the both ends are more likely to cool than the center in the axial direction of the heating portion. In the fourth embodiment, the inner circumferential surfaces of the heating portion at both ends in the axial direction are closer to the main body portion 2 than the inner circumferential surface of the center portion. This reduces the temperature difference between the both ends and the center in the penetration direction of the internal space. As a result, the main body portion 2 can be efficiently heated not only in the circumferential direction but also in the axial direction.

[0057] (Embodiment 5) Next, a fifth embodiment of the present invention will be described with reference to Fig. 14. Fig. 14 is a perspective view for explaining the configuration of a heating member according to the fifth embodiment of the present invention. Heating member 200A shown in Fig. 14 includes first heating member 204 and second heating member 205. Main body 2 is heated by combining first heating member 204 and second heating member 205.

[0058] The first heating member 204 includes a heating portion 241 and a cable 242. The heating portion 241 is electrically conductive and arch-shaped. The heating portion 241 has an inner peripheral portion 241a formed by a curved surface on the inner peripheral side. An end portion 241b on one end side of the heating portion 241, which contacts one end of the second heating member 205, is flat. An end portion 241c on the other end side of the heating portion 241, which faces the other end of the second heating member 205, is flat.

[0059] The second heating member 205 includes a heating portion 251 and a cable 252. The heating portion 251 is conductive and arch-shaped. The heating portion 251 has an inner peripheral portion 251a formed by a curved surface on the inner peripheral side. An end portion 251b on one end side of the heating portion 251, which contacts one end of the first heating member 204, is flat. An end portion 251c on the other end side of the heating portion 251, which faces the other end of the first heating member 204, is flat.

[0060] When the heating portions 241 and 251 of the first heating member 204 and the second heating member 205 are arranged side by side, a partially open cylindrical internal space is formed by the inner circumferential portions 241a and 251a. At this time, the end portion 241b of the heating portion 241 and the end portion 251b of the heating portion 251 are in contact with each other, while the end portions 241c and 251c are not in contact with each other.

[0061] In the fifth embodiment, similarly to the first embodiment, the main body 2 is heated using the heating member 200A having the heating portions 241 and 251 that form a cylindrical internal space, thereby making it possible to perform heating that suppresses an increase in the temperature difference that occurs within the main body 2. According to the fifth embodiment, when the bushing 31, which is a stress-relieving member, is thermocompression-bonded to the main body 2, which is an adherend, the adherend can be heated uniformly in a short time.

[0062] Although the embodiments for carrying out the present invention have been described above, the present invention should not be limited to only the above-described embodiments. For example, the present invention can be applied to products manufactured by performing a thermocompression bonding process. Furthermore, in the above-described first to fifth embodiments, examples in which two or three components are provided as components constituting the heating member have been described, but four or more components may also be provided.

[0063] In the above-described embodiment, an example was described in which a bushing connected to a vehicle body was bonded to a stabilizer. However, the present invention is not limited to stabilizers, and can be applied to any bonded member to which a damping member is bonded that is interposed between connected objects and damps vibrations between the connected objects, and in which the damping member is bonded to a heated main body. Examples of bonded members include stabilizers, coil springs, leaf springs, torsion bars, and disc springs. For example, an insulator is used as the damping member for a coil spring.

[0064] Furthermore, in the above-described embodiment, an example in which the bushing is composed of two members has been described, but the bushing may be composed of one member and have a hole for attachment to the main body 2 and a notch extending from the outer surface to the hole, for example.

[0065] In this way, the present invention can include various embodiments not described here, and various design changes can be made within the scope that does not deviate from the technical idea specified by the claims.

[0066] As described above, the bonding method and heating member according to the present invention are suitable for uniformly heating a bonded member in a short time when thermocompression bonding a relaxation member to the bonded member. [Explanation of symbols]

[0067] 1 stabilizer 2 Main body 3 Bush material 31 Bush 32 Bracket 200, 200A heating element 201, 204 First heating element 202, 205 Second heating element 203 Third heating element 211, 221, 231, 241, 251 heating section 222, 232, 242, 252 cables

Claims

1. A bonding method for bonding a relaxation member to a bonded member, comprising: a heating section of each of a plurality of components constituting the heating member being connected in series to a heating area including the adhesive surface of the relaxation member of the adherend, so that the heating area is surrounded by the heating sections; By energizing the heating member, the heating section generates heat to heat the heating region; The relaxation member and the heated adherend are pressure-bonded to each other, thereby adhering the relaxation member to the adherend; The plurality of heating units are arranged such that adjacent heating units are in contact with each other, and in a current flow path of the plurality of heating units, a heating unit to which a current is input and a heating unit to which a current is discharged are not in contact with each other. A bonding method characterized by:

2. The heating portion has a concavely curved surface, The heating region is disposed in an internal space formed by the curved surfaces of the heating sections, and the heating region is heated.

2. The bonding method according to claim 1.

3. The heating element is composed of three components: The heating region is disposed in the internal space formed by arranging the three heating units in a row, and the heating region is heated. The bonding method according to claim 2 .

4. The heating element is composed of two components: The heating region is disposed in the internal space formed by bringing one end of each of the two heating parts into contact with each other, and the heating region is heated. The bonding method according to claim 2 .

5. the heating section has a curved surface including a first curved surface provided at each end, a second curved surface having a larger radius of curvature than the first curved surface, and a connecting surface connecting the first and second curved surfaces, The heating region is disposed in an internal space formed by the curved surfaces of the heating portions and having a reduced diameter at both ends, and the heating region is heated.

2. The bonding method according to claim 1.

6. A heating member that heats a heating region including an adhesive surface of an adherend to which a relaxation member is adhered, The heating element is configured by a plurality of components having conductive heating portions, The heating portions of the components are connected in series to form an internal space for accommodating the heating region; The plurality of heating units are arranged such that adjacent heating units are in contact with each other, and in a current flow path of the plurality of heating units, a heating unit to which a current is input and a heating unit to which a current is discharged are not in contact with each other. A heating element characterized by:

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