JP2018034666A - Manufacturing method of stabilizer bar with stabilizer bush, adhesion jig of stabilizer bush and stabilizer bush - Google Patents

Abstract

A novel method for manufacturing a stabilizer bar with a stabilizer bush, and a novel method for manufacturing a stabilizer bar that can prevent peeling off of coatings on surfaces of first and second brackets by an adhesion jig when a bush body is adhered to the stabilizer bar. To provide a jig for bonding a stabilizer bush with a structure and a stabilizer bush with a novel structure. A method for manufacturing a stabilizer bar (10) with a stabilizer bush, in which a bonding jig (48) having a smaller surface roughness than coated first and second bracket metal fittings (20, 22) is used to form first and second bracket metal fittings (20, 22). Positioning the two bracket fittings 20 and 22 mutually in the attached state to the bushing body 18, compressing the bushing body 18 and pressing it against the stabilizer bar 12, and heating to 120 degrees or more, the bonding jig and gluing the bushing body 18 between the first and second bracket fittings 20, 22 positioned at 48 to the stabilizer bar 12. [Selection drawing] Fig. 16

Description

  The present invention relates to a method for manufacturing a stabilizer bar with a stabilizer bush, a jig for attaching the stabilizer bush used when attaching the stabilizer bush to the stabilizer bar, a stabilizer bush for attaching the stabilizer bar to a body or a frame of an automobile, and the like. It is related to.

  Conventionally, it has been studied to provide a stabilizer bar in order to reduce the inclination of a vehicle body such as an automobile and improve the running stability. This stabilizer bar is a torsion bar spring (torsion bar), and both ends are attached to a suspension, for example, so that left and right wheels are prevented from moving differently up and down.

  In addition, a stabilizer bush is attached to an intermediate portion of the stabilizer bar, and the intermediate portion of the stabilizer bar is attached to a body, a subframe, or the like via the stabilizer bush. As shown in Japanese Patent Application Laid-Open No. 2006-170257 (Patent Document 1), this stabilizer bush is formed of a rubber elastic body and is externally inserted into a stabilizer bar, and a radial direction is provided on the outer peripheral surface of the bush body. A bracket metal half member which is attached to be overlapped from both sides in one direction. The stabilizer bush is attached to the stabilizer bar in a state where the bush main body is extrapolated to the stabilizer bar and the inner peripheral surface of the bush main body and the outer peripheral surface of the stabilizer bar are bonded to each other.

  By the way, in order to adhere the bushing body to the stabilizer bar, it is necessary to heat the bushing body while keeping the inner peripheral surface of the bushing body pressed against the outer peripheral surface of the stabilizer bar.

  However, when the half members of the bracket metal are pressed in a direction approaching each other and the bushing body arranged on the inner peripheral side of the bracket metal is compressed in the radial direction and pressed against the stabilizer bar, the bracket metal is pressed. Since the pressing jig for doing so is pressed against the bracket fitting, there is a possibility that the coating generally applied to the surface of the bracket fitting for the purpose of rust prevention or the like may be peeled off. In particular, when heating is performed to bond the bushing body and the stabilizer bar, the bracket metallization is softened and easily moved to the pressing jig, and therefore the bracket metallization is liable to become a problem.

  In Patent Document 1, an intermediate plate fixed to a radially intermediate portion of the bushing body protrudes outward in the axial direction from the bushing body, and by pressing the intermediate plate with a pressing jig, The inner peripheral surface is pressed against the outer peripheral surface of the stabilizer bar. However, when the intermediate plate is pressed with a pressing jig as in Patent Document 1, the intermediate plate becomes indispensable in the stabilizer bush, and the degree of freedom in adjusting the vibration isolating characteristics of the stabilizer bush becomes small, and the intermediate plate becomes the bush main body. By projecting outward in the axial direction, the stabilizer bush becomes larger than necessary in the axial direction.

JP 2006-170257 A

  The present invention has been made in the background of the above-mentioned circumstances, and its solution is to hold the first bracket and the second bracket attached to the bushing body from both sides in an approaching state by the bonding jig, A new method for manufacturing a stabilizer bar with a stabilizer bush that prevents the surface of the first and second brackets from being peeled off by the bonding jig when the bushing is pressed against the stabilizer bar. It is to provide.

  Moreover, this invention provides the jig | tool for adhesion | attachment of the stabilizer bush of a novel structure, and the stabilizer bush of a novel structure which can prevent peeling of the coating of the surface of a 1st bracket and a 2nd bracket. That is also the purpose.

  Hereinafter, the aspect of this invention made | formed in order to solve such a subject is described. In addition, the component employ | adopted in each aspect as described below is employable by arbitrary combinations as much as possible.

  That is, according to the first aspect of the present invention, a cylindrical bush body formed of a rubber elastic body is arranged in an extrapolated state on the stabilizer bar, and the first bracket metal fitting and the second bracket body are disposed on the outer peripheral surface of the bush body. A method of manufacturing a stabilizer bar with a stabilizer bush, in which two bracket brackets are attached from both sides of the bush body, wherein the surface roughness is greater than the surface roughness of the painted first bracket bracket and second bracket bracket. With the reduced bonding jig, the first bracket fitting and the second bracket fitting are positioned relative to each other in an attached state with respect to the outer peripheral surface of the bushing body arranged in an extrapolated state on the stabilizer bar, and the bushing body Compressed between the first bracket fitting, the second bracket fitting and the stabilizer bar. A step of pressing the inner peripheral surface of the main body against the outer peripheral surface of the stabilizer bar, and extrapolation to the stabilizer bar between the first bracket metal fitting and the second bracket metal fitting mutually positioned by the bonding jig The bushing body arranged in a state is heated to 120 degrees or more and bonded to the stabilizer bar.

  According to the method of manufacturing a stabilizer bar with a stabilizer bush according to such a first aspect, in the process of bonding the bushing body to the stabilizer bar, the first bracket metal fitting and the second bracket metal fitting provided for the purpose of rust prevention or the like. The coating prevents the first bracket fitting and the second bracket fitting from being transferred to the bonding jig that holds the first bracket fitting and the second bracket fitting in a predetermined relative position, and prevents the coating from peeling off from the surfaces of the first bracket fitting and the second bracket fitting. be able to.

  In particular, when the bush body is bonded to the stabilizer bar, the first bracket bracket and the second bracket bracket are heated to a high temperature of 120 degrees or more together with the bush body and the stabilizer bar. The surface of the metal fitting is softened and is easily fixed to the bonding jig. Here, the surface roughness of the contact surface to the first bracket metal fitting and the second bracket metal fitting in the bonding jig is made smaller than the surface roughness of the painted surface of the first bracket metal fitting and the second bracket metal fitting. The adhesion of the coating to the bonding jig is reduced or avoided, and the peeling of the coating on the first bracket metal fitting and the second bracket metal fitting is prevented, and the intended anticorrosion and rust prevention are realized.

  According to a second aspect of the present invention, in the method for manufacturing a stabilizer bar with a stabilizer bush described in the first aspect, the first bracket fitting includes a first fastening piece projecting from the bush body to the outer periphery. The second bracket fitting includes a second fastening piece protruding from the bushing body to the outer periphery, and the first fastening piece and the second fastening piece that are overlapped with each other are overlapped by the bonding jig. The first bracket metal fitting and the second bracket metal fitting are positioned relative to each other in a state of being attached to the bush main body, and the bush main body is attached to the first bracket metal fitting and the second bracket metal fitting. The inner circumferential surface of the bush body is pressed against the outer circumferential surface of the stabilizer bar by compressing in the radial direction between the stabilizer bars.

  According to the second aspect, the first bracket piece and the second fastening piece, which are overlapped with each other, are sandwiched and held by the bonding jig, so that the first bracket metal fitting and the second bracket can be The two bracket fittings can be held at a predetermined relative position.

  According to a third aspect of the present invention, in the method for manufacturing a stabilizer bar with a stabilizer bush described in the first or second aspect, the bush body is bonded to at least one of the first bracket metal fitting and the second bracket metal fitting. To do.

  According to the 3rd aspect, generation | occurrence | production of the noise by the friction etc. between the bracket metal fitting adhere | attached on the bush main body and a bush main body etc. are avoided. The bush body and the bracket fitting may be bonded together by, for example, vulcanization at the time of vulcanization molding of the bush body, or may be bonded at the same time when the bush body is bonded to the stabilizer bar.

  According to a fourth aspect of the present invention, in the method for manufacturing a stabilizer bar with a stabilizer bush described in any one of the first to third aspects, a contact surface to the first bracket fitting in the bonding jig and Contact surfaces to the second bracket fitting are respectively covered with a coating layer, and the surface roughness of the contact surface of the bonding jig covered with the coating layer is the first bracket fitting and the second bracket. It is made smaller than the surface roughness of the metal fitting.

  According to the fourth aspect, the contact surface with a small surface roughness can be easily realized by the coating layer without requiring post-processing or post-processing such as polishing or plating on the contact surface to the bracket metal fitting in the bonding jig. can do.

  According to a fifth aspect of the present invention, in the method for manufacturing a stabilizer bar with a stabilizer bush described in the fourth aspect, the coating layer of the bonding jig is formed of a fluororesin.

  According to the fifth aspect, the surface roughness of the contact surface in the bonding jig can be sufficiently reduced by the coating layer, and it is possible to effectively prevent the bracket metal fitting from being attached.

  In addition, since the surface of the fluororesin coating layer is almost non-polar, the interaction with the bracket metal coating that comes in contact with the surface is reduced, and the bracket metal coating is applied to the bonding jig. It becomes harder to stick.

  Furthermore, since the coating layer of fluororesin is excellent in heat resistance, even when the bush body and the stabilizer bar are bonded under a high temperature condition of, for example, 120 degrees or more, the coating layer exhibits the initial performance, It is possible to stably prevent the bracket metal fitting from adhering to the bonding jig. In addition, since it has excellent wear resistance and chemical resistance, a predetermined surface roughness can be stably obtained even when the bonding jig is repeatedly used.

  According to a sixth aspect of the present invention, the first bracket fitting and the second bracket fitting attached from both sides sandwiching the bush main body to the outer peripheral surface of the cylindrical bush main body formed of a rubber elastic body are brought close to each other. A stabilizer bushing that biases and holds the bushing body arranged in an extrapolated state on the stabilizer bar in a radially compressed state between the first bracket fitting and the second bracket fitting and the stabilizer bar. A bonding jig, wherein the surface roughness of the contact surface to the first bracket metal fitting and the contact surface to the second bracket metal fitting is the surface of the first bracket metal fitting and the second bracket metal fitting coated. It is characterized by being smaller than the surface roughness.

  According to the stabilizer bush bonding jig having the structure according to the sixth aspect as described above, the contact surface contacting the first bracket metal fitting and the contact surface contacting the second bracket metal fitting are both the first bracket metal fitting. And it is formed with the surface roughness smaller than the coating surface of the 2nd bracket metal fitting. This makes it difficult for the coating of the first bracket fitting and the second bracket fitting to adhere to the bonding jig, and prevents peeling of the coating due to the contact of the bonding jig between the first bracket fitting and the second bracket fitting. The In particular, even when the bushing body is heat-bonded to the stabilizer bar, it is possible to prevent the coating from being transferred to the bonding jig and to avoid peeling of the coating.

  According to a seventh aspect of the present invention, there is provided the stabilizer bush bonding jig according to the sixth aspect, wherein the contact surface to the first bracket fitting and the contact surface to the second bracket fitting are respectively coated. The surface roughness of the contact surface covered with the coating layer is made smaller than the surface roughness of the first bracket fitting and the second bracket fitting.

  According to the seventh aspect, the contact surface with a small surface roughness can be easily realized by the coating layer without requiring post-processing or post-processing such as polishing or plating on the contact surface to the bracket metal fitting in the bonding jig. can do.

  According to an eighth aspect of the present invention, in the jig for bonding a stabilizer bush described in the seventh aspect, the coating layer is formed of a fluororesin.

  According to the eighth aspect, the surface roughness of the contact surface in the bonding jig can be made sufficiently small by the coating layer, and it is possible to effectively prevent the bracket metal fitting from adhering.

  In addition, since the surface of the fluororesin coating layer is almost non-polar, the interaction with the bracket metal coating that comes in contact with the surface is reduced, and the bracket metal coating is fixed by the bonding jig. It becomes difficult to do.

  Furthermore, since the coating layer of fluororesin is excellent in heat resistance, even when the bush body and the stabilizer bar are bonded under a high temperature condition of, for example, 120 degrees or more, the coating layer exhibits the initial performance, It is possible to stably prevent the bracket metal fitting from adhering to the bonding jig. In addition, since it has excellent wear resistance and chemical resistance, a predetermined surface roughness can be stably obtained even when the bonding jig is repeatedly used.

  According to a ninth aspect of the present invention, in the jig for stabilizer bushing described in any one of the sixth to eighth aspects, a first pressing portion having a contact surface to the first bracket metal fitting, A second pressing portion having a contact surface to the second bracket fitting, and the first pressing portion and the second pressing portion face each other in the overlapping direction of the first bracket fitting and the second bracket fitting. And a connecting portion that connects the first pressing portion and the second pressing portion to each other.

  According to the ninth aspect, the first bracket fitting and the second bracket fitting are relatively positioned and held by the bonding jig having a simple structure in which the first pressing portion and the second pressing portion are connected to each other by the connecting portion. can do.

  A tenth aspect of the present invention includes a cylindrical bush body formed of a rubber elastic body and bonded to a stabilizer bar in an extrapolated state, and a first bracket fitting and an outer peripheral surface of the bush body. In a stabilizer bush attached from both sides with the bush body sandwiched between the second bracket fitting, the first bracket fitting and the second bracket fitting are brought close to the first bracket fitting and the second bracket fitting. An adhesive jig for holding and holding the bush main body in a radially compressed state between the first bracket metal fitting and the second bracket metal fitting and the stabilizer bar can be attached. A jig contact surface that contacts the contact surface of the tool is provided and the jig contact surface is painted, and the surface roughness of the painted jig contact surface is the contact surface. That it is larger than the surface roughness of the contact surface in use jig, it characterized.

  According to the stabilizer bush having the structure according to the tenth aspect, the coating surface of the jig contact surface of the bracket fitting with which the contact surface of the bonding jig comes into contact is rougher than the contact surface. Therefore, even if the bonding jig comes into contact with the jig contact surface of the bracket metal fitting, it is difficult for the paint on the jig contact surface to adhere to the contact surface of the bonding jig. The paint on the jig contact surface is held without being peeled off. As a result, in a state where the stabilizer bush is mounted on the stabilizer bar, the rust prevention performance by the coating of the first bracket fitting and the second bracket fitting is maintained, and the durability is improved.

  According to an eleventh aspect of the present invention, in the stabilizer bush described in the tenth aspect, an intermediate plate extending in the circumferential direction is provided at a radial intermediate portion of the bush body, and the intermediate plate is It is arrange | positioned in the axial direction inner side rather than the axial direction end of a bush main body.

  According to the eleventh aspect, the spring characteristic of the bush body can be adjusted by providing the intermediate plate. Furthermore, since the bonding jig can be brought into direct contact with the painted bracket metal fitting, it is not necessary to hold the intermediate plate with the bonding jig, and the intermediate plate is more than the axial end of the bushing body. There is no need to protrude outward in the axial direction. Therefore, it is not necessary to increase the axial dimension of the intermediate plate more than necessary, and it is possible to realize downsizing and reduction of materials.

  A twelfth aspect of the present invention is the stabilizer bush described in the tenth or eleventh aspect, wherein at least one of the first bracket metal fitting and the second bracket metal fitting is bonded to the bush main body. It is.

  According to the twelfth aspect, it is possible to prevent generation of abnormal noise due to rubbing between the bracket metal member bonded to the bushing body and the bushing body, damage due to wear, and the like.

  According to a thirteenth aspect of the present invention, in the stabilizer bush described in any one of the tenth to twelfth aspects, the first fastening piece in which the first bracket fitting projects toward the outer periphery of the bush body. And the second bracket fitting includes a second fastening piece projecting toward the outer periphery of the bush body, and the first bracket fitting and the second bracket fitting are attached to the bush body in the attached state. The first fastening piece and the second fastening piece are superimposed on each other.

  According to the thirteenth aspect, the first bracket fitting and the second bracket fitting can be easily attached to the vehicle body, the subframe, etc. using the first fastening piece and the second fastening piece. Further, for example, if the first fastening piece and the second fastening piece that are overlapped with each other in the contact state or the non-contact state are sandwiched between the bonding jigs, the first bracket metal fitting is used by the small bonding jig. And the second bracket fitting can be held at a predetermined relative position.

  According to the present invention, in the manufacturing method of the stabilizer bar with the stabilizer bush, the surface roughness of the contact surface to the bracket metal fitting in the bonding jig is the surface of the jig contact surface between the first bracket metal fitting and the second bracket metal fitting. In the process of bonding the bushing body to the stabilizer bar at a high temperature of 120 ° C or higher while the first bracket metal fitting and the second bracket metal fitting are positioned and held with each other by the bonding jig, the bracket becomes smaller than the roughness. It is possible to prevent the coating of the metal fitting from adhering to the bonding jig and peeling off.

The front view which shows the stabilizer bar with a stabilizer bush as 1st embodiment of this invention. The bottom view of the stabilizer bar with a stabilizer bush shown in FIG. The side view of the stabilizer bar with a stabilizer bush shown in FIG. IV-IV sectional drawing of FIG. VV sectional drawing of FIG. The side view which expands and shows the 1st half part which comprises the stabilizer bar with a stabilizer bush of FIG. VII-VII sectional drawing of FIG. VIII-VIII sectional drawing of FIG. The side view which expands and shows the 2nd half part which comprises the stabilizer bar with a stabilizer bush of FIG. Sectional drawing of the 2nd half part shown in FIG. The side view which expands and shows the 1st bracket metal fitting which comprises the stabilizer bar with a stabilizer bush of FIG. The top view of the 1st bracket metal fitting shown in FIG. The side view which expands and shows the 2nd bracket metal fitting which comprises the stabilizer bar with a stabilizer bush of FIG. The top view of the 2nd bracket metal fitting shown in FIG. The side view which shows the process of adhere | attaching a stabilizer bush to a stabilizer bar. Sectional drawing which shows the process of adhere | attaching a stabilizer bush to a stabilizer bar. The perspective view of the jig | tool for adhesion | attachment used at the process of adhere | attaching a stabilizer bush to a stabilizer bar. The figure which shows the vehicle mounting state of the stabilizer bar with a stabilizer bush shown in FIG. The front view which shows the stabilizer bar with a stabilizer bush as 2nd embodiment of this invention. The bottom view of a stabilizer bar with a stabilizer bush shown in FIG. The side view of the stabilizer bar with a stabilizer bush shown in FIG. XXII-XXII sectional drawing of FIG. XIII-XIII sectional drawing of FIG. The side view which expands and shows the 1st vulcanization molded product which comprises the stabilizer bar with a stabilizer bush of FIG. The top view of the 1st vulcanization molded product shown in FIG. The bottom view of the 1st vulcanization molded product shown in FIG. XXVII-XXVII sectional drawing of FIG. XXVIII-XXVIII sectional drawing of FIG. The side view which expands and shows the 2nd vulcanization molded product which comprises the stabilizer bar with a stabilizer bush of FIG. FIG. 30 is a plan view of the second vulcanized molded product shown in FIG. 29. FIG. 30 is a bottom view of the second vulcanized molded product shown in FIG. 29. XXXII-XXXII sectional drawing of FIG. XXXIII-XXXIII sectional drawing of FIG. The side view which shows the process of adhere | attaching a stabilizer bush to a stabilizer bar. Sectional drawing which shows the process of adhere | attaching a stabilizer bush to a stabilizer bar.

  Embodiments of the present invention will be described below with reference to the drawings.

  1-3, the stabilizer bar 10 with a stabilizer bush for motor vehicles is shown as 1st embodiment of this invention. The stabilizer bar 10 with the stabilizer bush has a structure in which two stabilizer bushes 14 are attached to an intermediate portion of the long bar-shaped stabilizer bar 12. In the following description, in principle, the up and down direction refers to the up and down direction in FIG. 1, the left and right direction refers to the left and right direction in FIG. 1, and the front and back direction refers to the up and down direction in FIG.

  The stabilizer bar 12 is a high-rigidity bar made of iron or the like, and has an intermediate portion that extends linearly, and both end portions bend and extend to the same side with respect to the intermediate portion. Furthermore, attachment portions 16 and 16 are provided at both ends of the stabilizer bar 12, and are attached to a suspension arm 64 of a vehicle to be described later.

  In addition, stabilizer bushes 14 are attached to both ends of the intermediate portion of the stabilizer bar 12, respectively. 4 and 5, the stabilizer bush 14 has a structure in which a first bracket metal fitting 20 and a second bracket metal fitting 22 are attached to a cylindrical bush body 18 formed of a rubber elastic body. .

  More specifically, the bush main body 18 is configured by combining a first half 24 constituting the upper half and a second half 26 constituting the lower half. As shown in FIGS. 6 to 8, the first half portion 24 has a substantially semi-cylindrical shape that opens downward in FIG. 6 as a whole. It has a structure in which one intermediate plate 30 is vulcanized and bonded in a substantially embedded state. In the first intermediate plate 30 of the present embodiment, the axial end portion is positioned on the inner side in the axial direction from the axial outermost end of the first rubber elastic body 28, and both axial end portions are the first rubber elastic body. It is partially exposed from 28 and can be supported by a mold when the first rubber elastic body 28 is vulcanized. On the other hand, as shown in FIGS. 9 and 10, the second half portion 26 has a substantially semi-cylindrical shape that opens upward in FIG. 9 as a whole, and the central portion in the circumferential direction of the outer peripheral surface is a flat surface. The second rubber plate 34 has a structure in which a second intermediate plate 36 is vulcanized and bonded to a radially intermediate portion of the second rubber elastic body 34 in a substantially embedded state. In the second intermediate plate 36 of the present embodiment, the axial end portion is positioned on the inner side in the axial direction from the axial outermost end of the second rubber elastic body 34, and both axial end portions are the second rubber elastic body. It is partially exposed from 34 and can be supported by a mold when the second rubber elastic body 34 is vulcanized.

  And the cylindrical bush main body 18 is comprised by overlapping the lower end surface of the 1st half part 24, and the upper end surface of the 2nd half part 26 in contact state. Further, the first half 24 and the second half 26 are each formed in a semi-cylindrical shape, so that a mounting hole 38 penetrating in the axial direction is formed in the bushing body 18.

  A first bracket metal fitting 20 and a second bracket metal fitting 22 are attached to the bush body 18. As shown in FIGS. 11 and 12, the first bracket metal fitting 20 has a first mounting portion 40 which is formed in a curved plate shape extending in the left-right direction with a substantially U-shaped cross section and is superimposed on the outer peripheral surface of the bush body 18. A pair of first fastening pieces 42, 42 projecting from both ends of one mounting portion 40 to the front and rear and outside (left and right in FIG. 11) are provided. On the other hand, as shown in FIGS. 13 and 14, the second bracket metal fitting 22 extends to the left and right in a substantially groove-shaped cross section that extends forward and backward while opening downward, and is superimposed on the lower surface (flat surface 32) of the bush body 18. In addition to having two mounting portions 44, a pair of second fastening pieces 46, 46 projecting from both ends of the second mounting portion 44 to the front and rear and the outside (left and right in FIG. 13) are provided.

  Moreover, the 1st bracket metal fitting 20 and the 2nd bracket metal fitting 22 are formed with the metal material, and are formed with the iron-type metal material in this embodiment. Furthermore, the surface of the first bracket metal fitting 20 and the second bracket metal fitting 22 is entirely coated with a rust preventive paint. The coating method of the first bracket metal fitting 20 and the second bracket metal fitting 22 is not particularly limited. For example, the first bracket metal fitting 20 which is an object to be coated by applying paint particles dispersed in a polar solvent. The electrodeposition coating is preferably deposited and deposited on the surface of the second bracket metal fitting 22, and more preferably, the cationic electrodeposition coating in which the first bracket metal fitting 20 and the second bracket metal fitting 22 serve as a cathode when energized. Adopted. Also, the type of paint is not particularly limited, but for the purpose of anticorrosion (rust prevention), weather resistance, and the like, for example, those using an epoxy resin or an acrylic resin are suitably employed.

  The first bracket fitting 20 and the second bracket fitting 22 are attached to the outer peripheral surface of the bush main body 18. That is, the first bracket fitting 20 and the second bracket fitting 22 are attached to the outer peripheral surface of the bushing body 18 from both sides in one direction perpendicular to the axis of the bushing body 18 (vertical direction in this embodiment), and the first mounting portion 40 is superimposed on the upper surface and both front and rear surfaces of the bush main body 18, and the second mounting portion 44 is superimposed on the lower surface of the bush main body 18. In the present embodiment, the first mounting portion 40 of the first bracket metal fitting 20 and the second mounting portion 44 of the second bracket metal fitting 22 are bonded to the outer peripheral surface of the bush main body 18.

  Further, in a state where the first and second bracket fittings 20 and 22 are attached to the bushing body 18, the first fastening piece 42 of the first bracket fitting 20 and the second fastening piece 46 of the second bracket fitting 22 are in the vertical direction. Are superimposed on each other. In addition, the 1st fastening piece 42 and the 2nd fastening piece 46 may be piled up in the state which contact | abutted mutually directly, in the state which left | separated with the predetermined clearance gap, or via other members, such as a rubber layer. It may be superposed in an indirect contact state. Further, the first and second fastening pieces 42 and 46 are formed with bolt holes 47 penetrating in the overlapping direction, and the first and second bracket fittings 20, 22 is attached to a vehicle body 66 described later. Even in the case where the first and second fastening pieces 42 and 46 are overlapped with a gap, FIGS. 3 to 5 are attached to the vehicle body 66 by being tightened by a bolt (not shown) inserted into the bolt hole 47, for example. Can be recognized.

  The stabilizer bush 14 having such a structure is attached to an intermediate portion of the stabilizer bar 12. That is, as shown in FIGS. 3 to 5, the stabilizer bar 12 is inserted into the mounting hole 38 of the bush main body 18 of the stabilizer bush 14, and the inner peripheral surface of the bush main body 18 is bonded to the outer peripheral surface of the stabilizer bar 12. Thus, the stabilizer bush 14 is attached to the stabilizer bar 12 in an extrapolated state, and the stabilizer bar 10 with the stabilizer bush is configured.

  The stabilizer bar 10 with the stabilizer bush having such a structure is manufactured by, for example, a manufacturing method having the following steps.

  That is, first, the stabilizer bar 12, the first half 24 and the second half 26 of the bush body 18, and the first bracket fitting 20 and the second bracket fitting 22 are prepared. In the present embodiment, as described above, the first half 24 and the second half 26 are formed as an integrally vulcanized molded product including the first intermediate plate 30 and the second intermediate plate 36, and the first bracket fitting 20. And cationic coating is applied to the surface of the second bracket fitting 22.

  Next, the first half 24 and the second half 26 are arranged so as to sandwich a predetermined portion of the stabilizer bar 12 in the direction perpendicular to the axis, and the bush body 18 is arranged on the stabilizer bar 12 in an extrapolated state. At that time, an adhesive is applied to at least one of the outer peripheral surface of the stabilizer bar 12 and the inner peripheral surface of the bush main body 18. In the present embodiment, the two bush bodies 18 are attached to the stabilizer bar 12.

  Next, the first bracket fitting 20 and the second bracket fitting 22 are attached to the bushing body 18. In the present embodiment, an adhesive is applied to at least one of the contact surfaces of the bush body 18, the first bracket fitting 20, and the second bracket fitting 22. In short, both the first bracket metal fitting 20 and the second bracket metal fitting 22 may be bonded to the bushing body 18, or either the first bracket metal fitting 20 or the second bracket metal fitting 22 is bonded to the bushing body 18. Also good.

  Next, as shown in FIGS. 15 and 16, a stabilizer bush bonding jig 48 is attached to the first fastening piece 42 of the first bracket fitting 20 and the second fastening piece 46 of the second bracket fitting 22. .

  As shown in FIG. 17, the bonding jig 48 faces each other in the vertical direction, which is the overlapping direction of the first fastening piece 42 of the first bracket fitting 20 and the second fastening piece 46 of the second bracket fitting 22. A plate-like first pressing part 50 and a second pressing part 52 are provided. Furthermore, the bonding jig 48 is integrally provided with a connecting portion 54 that connects the front and rear outer ends of the first pressing portion 50 and the second pressing portion 52 to each other. Has been.

  In addition, the bonding jig 48 is configured such that the lower surface of the first pressing portion 50 is a first contact surface 56 that is superimposed on the first fastening piece 42 from above, and the upper surface of the second pressing portion 52. Is a second contact surface 58 that is superimposed on the second fastening piece 46 from below in a contact state. As can be understood from this, the upper surface of the first fastening piece 42 of the first bracket fitting 20 and the lower face of the second fastening piece 46 of the second bracket fitting 22 are respectively contacted by the bonding jig 48. The jig contact surfaces 59 are in contact with each other, and the jig contact surfaces 59 are coated with a cation.

  Further, a coating layer 60 is formed on the surface of the bonding jig 48 including the first contact surface 56 and the second contact surface 58, and the surface roughness of the first and second contact surfaces 56, 58 is substantially reduced. The surface roughness of the coating layer 60 becomes smaller than any surface roughness of the upper surface of the first fastening piece 42 of the first bracket metal fitting 20 and the lower surface of the second fastening piece 46 of the second bracket metal fitting 22. . In addition, the maximum height (Rmax) of the surfaces of the first contact surface 56 and the second contact surface 58 covered with the coating layer 60 in the bonding jig 48 is preferably 5 μm or less. Further, preferably, the ten-point average roughness (Rz) is 5 μm or less and the center line average roughness (Ra) is 0.5 μm or less.

  The coating layer 60 is intended to reduce the surface roughness of the first contact surface 56 and the second contact surface 58 and to smooth the surfaces of the contact surfaces 56, 58. It is made of resin. Examples of the fluororesin used for the coating layer 60 include polytetrafluoroethylene (PTFE), polychlorotrifluoroethylene (PCTFE), perfluoroalkoxy fluororesin (PFA), and tetrafluoroethylene / hexafluoropropylene. Polymer (FEP), ethylene / tetrafluoroethylene copolymer (ETFE), polyvinylidene fluoride (PVDF), polyvinyl fluoride (PVF), and the like are suitable.

  The bonding jig 48 having such a structure is configured so that the first fastening piece 42 and the second fastening piece 46 of the first bracket fitting 20 and the second fastening piece 46 of the second bracket fitting 22 are the same as the first fastening piece 42 and the second fastening piece 46. The fastening pieces 46 are attached so as to be sandwiched in the overlapping direction. Further, while pressing the first bracket fitting 20 and the second bracket fitting 22 in the relative approaching direction, the bonding jig 48 is attached to the first bracket fitting 20 and the second bracket fitting 22, and the first bracket fitting 20 is attached. And the second bracket fitting 22 are maintained in a state where the relative displacement in the separating direction is limited by the bonding jigs 48, 48. As a result, the bushing body 18 is compressed in the direction perpendicular to the axis between the first bracket fitting 20 and the second bracket fitting 22, and the inner peripheral surface of the bushing body 18 is held against the outer peripheral surface of the stabilizer bar 12. To do. Further, when the bonding jig 48 is mounted, the outer peripheral surface of the bushing body 18 is pressed against the first mounting portion 40 of the first bracket metal fitting 20 and the second mounting portion 44 of the second bracket metal fitting 22. Retained. The first fastening piece 42 and the second fastening piece 46 that are sandwiched and held by the bonding jig 48 do not necessarily overlap each other in a contact state, and are overlapped with a predetermined gap therebetween. Alternatively, it may be positioned and held by the bonding jig 48 in a state of being in contact and being overlapped indirectly via another member.

  Next, in a state where the first bracket fitting 20 and the second bracket fitting 22 are relatively positioned and held by the bonding jig 48, the stabilizer bar 12 and the stabilizer bush 14 are placed in a thermostat and heated, whereby the bush body The adhesive between 18 and the stabilizer bar 12 and the adhesive between the bush body 18 and the first and second bracket fittings 20 and 22 are cured, respectively, so that the bush body 18 and the stabilizer bar 12 and the first and second The brackets 20 and 22 are bonded. In addition, the stabilizer bar 12 and the stabilizer bush 14 are hold | maintained over the predetermined time in the state heated to 120 degree | times or more in the thermostat, More preferably, it hold | maintained in the state heated to 150 degree | times or more.

  By completing such a bonding process, the stabilizer bush 14 is attached to the stabilizer bar 12 in an extrapolated state, and the first and second bracket fittings 20 and 22 are fixed to the bush body 18. And the stabilizer bar 10 with a stabilizer bush is obtained by removing the jig | tool 48 for adhesion | attachment from the 1st, 2nd bracket metal fittings 20 and 22 after completion of an adhesion process. In this embodiment, since the bonding jig 48 closes the bolt hole 47, the bonding jig 48 is removed from the first and second bracket fittings 20 and 22 after the bonding process is completed. However, when the bonding jig 48 has a structure that does not interfere with the functions of the first and second bracket fittings 20 and 22, the bonding jig 48 may remain attached. When the first and second bracket fittings 20 and 22 are displaced in the separation direction due to the elasticity of the bushing body 18 after the bonding process is completed, the first and second bracket fittings 20 and 22 are placed in the overlapping direction. It is desirable to avoid excessive rubbing and catching of the bonding jig 48 on the first and second bracket metal fittings 20 and 22 by removing the bonding jigs 48 and 48 while exerting an external force that presses the first and second brackets.

  Here, the surface roughness of the first and second contact surfaces 56 and 58 of the bonding jig 48 covered with the coating layer 60 is such that the first and second fastening pieces of the first and second bracket fittings 20 and 22 are the same. The surface roughness of the upper and lower outer surfaces of 42 and 46 is made smaller. This makes it difficult for the coating to adhere to the first and second contact surfaces 56 and 58 of the bonding jig 48 on the upper and lower outer surfaces of the first and second fastening pieces 42 and 46 with which the bonding jig 48 abuts. Therefore, a decrease in durability of the first and second bracket fittings 20 and 22 due to peeling of the paint is prevented.

  The effect of preventing such coating from adhering to the first and second contact surfaces 56 and 58 is, for example, by reducing the unevenness of the first and second contact surfaces 56 and 58 to thereby reduce the first and second contact surfaces 56 and 58. This is achieved by reducing static charge due to friction of the second bracket fittings 20 and 22 and making it difficult for the paint to adhere to the first and second contact surfaces 56 and 58 of the bonding jig 48. Further, since the minute unevenness of the first and second contact surfaces 56 and 58 is made smaller, the coating softened by heating enters into the minute recesses of the first and second contact surfaces 56 and 58. The effect is reduced and adhesion of the paint to the first and second contact surfaces 56, 58 is prevented.

  In the present embodiment, a small surface roughness can be easily set by covering the surfaces of the first and second contact surfaces 56 and 58 of the bonding jig 48 with the coating layer 60. In addition, since the coating layer 60 is formed of a fluororesin, the surface roughness is set to be sufficiently small, and the heat resistance against high temperatures when the bushing body 18 and the stabilizer bar 12 are bonded, and the coating surface is Further prevention of paint peeling due to substantially nonpolarity and reduced interaction, and improvement in durability of the bonding jig 48 due to excellent wear resistance are realized.

  The first bracket fitting 20 is provided with a first fastening piece 42 that protrudes to the outer periphery, and the second bracket fitting 22 is provided with a second fastening piece 46 that protrudes to the outer periphery. 42 and the second fastening piece 46 are overlapped with each other and sandwiched between the first and second pressing portions 50 and 52 of the bonding jig 48. Thereby, the bonding jig 48 of the present embodiment is compared with the case where the first mounting part 40 of the first bracket metal fitting 20 and the second mounting part 44 of the second bracket metal fitting 22 are sandwiched and held, for example. Can be made compact. In addition, since the first and second pressing portions 50 and 52 are integrally connected by the connecting portion 54, the entire bonding jig 48 is integrated and easy to handle.

  Further, the stabilizer bush 14 formed in the state of being attached to the stabilizer bar 12 by the manufacturing method as described above has an abnormal noise due to rubbing because the bush body 18 is bonded to the first and second bracket fittings 20 and 22. Occurrence and wear are prevented. Further, when the bushing body 18 is bonded to the stabilizer bar 12, the bushing body 18 and the first and second bracket fittings 20 and 22 are bonded at the same time, thereby avoiding an increase in the number of manufacturing processes and the bonding treatment. With the tool 48, the bush body 18 and the first and second bracket fittings 20 and 22 can be effectively bonded together.

  In the stabilizer bush 14 of the present embodiment, the first and second intermediate plates 30 and 36 are vulcanized and bonded to the bush body 18, and the spring characteristics of the bush body 18 are adjusted. Furthermore, since the first and second bracket fittings 20 and 22 can be pressed by the bonding jig 48 in the bonding process, the first and second intermediate plates 30 and 36 are bonded to the bonding jig. The bush main body 18 can be reduced in size and weight because it is not necessary to protrude outward in the axial direction from the axial ends of the first and second rubber elastic bodies 28 and 34 so that they can be pressed at 48.

  In addition, as shown in FIG. 18, the stabilizer bar 10 with a stabilizer bush of this embodiment is used, for example, attached to a motor vehicle. That is, the attachment portions 16 and 16 provided at both ends of the stabilizer bar 12 are attached to one of the left and right suspension arms 64 and 64 on the wheels 62 and 62 side, and the middle portion of the stabilizer bar 12 is the stabilizer bush. 14 and 14 are attached to the vehicle body 66.

  19 to 22 show a stabilizer bar 70 with a stabilizer bush for an automobile as a second embodiment of the present invention. The stabilizer bar 70 with the stabilizer bush has a structure in which two stabilizer bushes 72 and 72 are attached to an intermediate portion of the long bar-shaped stabilizer bar 12. In addition, in the following description, about the member and site | part substantially the same as 1st embodiment, description is abbreviate | omitted by attaching | subjecting the same code | symbol in a figure.

  22 and 23, the stabilizer bush 72 has a structure in which a first bracket fitting 76 and a second bracket fitting 78 are vulcanized and bonded to a cylindrical bush body 74 formed of a rubber elastic body. ing. More specifically, the stabilizer bush 72 includes a first half 80 in which a first bracket fitting 76 is vulcanized and bonded to the upper half of the bush body 74, and a second bracket fitting 78 in the lower half of the bush body 74. The second half 82 bonded by vulcanization is combined.

  As shown in FIGS. 24 to 28, the first half 80 has a first intermediate plate 86 and a first rubber elastic body 84 having a substantially semi-cylindrical shape that opens downward in FIG. 24 as a whole. The first bracket fitting 76 has a structure that is vulcanized and bonded. The first intermediate plate 86 has a curved plate shape extending in the circumferential direction, and as shown in FIGS. 25 to 27, both end portions in the axial direction protrude outward in the axial direction from the outer end in the axial direction of the first rubber elastic body 84. ing. 24 to 28 showing the first half 80 and FIGS. 29 to 33 showing the second half 82 so that the overlapping direction of the first and second halves 80 and 82 is up and down. In the drawings, the upper and lower sides in the figure are described as the up and down directions.

  The first bracket fitting 76 includes a first mounting portion 88 that has a groove shape with a substantially arc cross section, and first fastening pieces 42 and 42 that project back and forth from both circumferential ends of the first mounting portion 88. The first mounting portion 88 is vulcanized and bonded so as to cover the outer peripheral surface (upper surface) of the first rubber elastic body 84. The first rubber elastic body 84 of the present embodiment is vulcanized and bonded not only to the inner peripheral surface of the first mounting portion 88 of the first bracket fitting 76 but also to both axial end surfaces and the outer peripheral surface of the first mounting portion 88. The first rubber elastic body 84 is firmly secured to the first bracket fitting 76.

  On the other hand, as shown in FIGS. 29 to 33, the second half 82 has a substantially semi-cylindrical shape that opens upward in FIG. 29 as a whole, and both ends in the circumferential direction go to both sides in the circumferential direction. Accordingly, the second intermediate plate 94 and the second bracket fitting 78 are vulcanized and bonded to the second rubber elastic body 92 that is tapered in the radial direction. The second intermediate plate 94 has a curved plate shape extending in the circumferential direction of the second rubber elastic body 92, and both axial ends are axially outer ends of the second rubber elastic body 92 as shown in FIGS. Protrudes outward in the axial direction.

  The second bracket fitting 78 includes a second mounting portion 96 having a groove shape with a substantially arc cross section, and second fastening pieces 46, 46 projecting forward and backward from both circumferential ends of the first mounting portion 88. The second mounting portion 96 is vulcanized and bonded so as to cover the outer peripheral surface (lower surface) of the second rubber elastic body 92. The second rubber elastic body 92 of the present embodiment is vulcanized and bonded not only to the inner peripheral surface of the second mounting portion 96 of the second bracket fitting 78 but also to both the axial end surfaces and the outer peripheral surface of the second mounting portion 96. The second rubber elastic body 92 is firmly secured to the second bracket fitting 78.

  Then, the first half 80 and the second half 82 are attached so as to be sandwiched from both sides in the direction perpendicular to the axis with respect to the intermediate portion of the stabilizer bar 12, thereby forming the stabilizer bush 72. Thereby, the stabilizer bar 12 is inserted into the mounting hole 38 of the bush main body 74 in the stabilizer bush 72. The bush main body 74 of the present embodiment includes a first rubber elastic body 84 and a first intermediate plate 86 of the first half 80, and a second rubber elastic body 92 and a second intermediate plate 94 of the second half 82. It is constituted by.

  Further, the inner peripheral surface of the bush main body 74 is bonded to the outer peripheral surface of the stabilizer bar 12. That is, first, before the first half 80 and the second half 82 are overlapped with the stabilizer bar 12 from both sides in the direction perpendicular to the axis, the first half 80 and the second half 82 are overlapped with the stabilizer bar 12. Apply adhesive to the surface. Next, after the first half 80 and the second half 82 are overlaid on the stabilizer bar 12, the first fastening pieces 42 and 42 of the first bracket fitting 76 and the second bracket fitting 78 of the second bracket fitting 78 are overlapped with each other. The bonding jigs 48, 48 are attached so as to sandwich the two fastening pieces 46, 46, and the first bracket fitting 76 and the second bracket fitting 78 are held in a predetermined relative position close to each other. Thereafter, the stabilizer bush 72 and the stabilizer bar 12 are placed in a thermostatic bath and held for a predetermined time in a state of being heated to 120 ° C. or more, whereby the inner peripheral surface of the bush body 74 is brought to the outer peripheral surface of the stabilizer bar 12. Glue. After the bonding step is completed, the bonding jigs 48, 48 are removed from the first and second bracket fittings 76, 78, so that the stabilizer bush 72 is formed in the mounted state on the stabilizer bar 12, and the stabilizer bush is attached. The stabilizer bar 70 can be obtained. In the bonding jigs 48, 48 of the present embodiment, the surface roughness of the first and second contact surfaces 56, 58 is such that the first and second fastening pieces 42 of the first and second bracket fittings 76, 78 are used. , 46 is made smaller than the surface roughness of the outer surface in the overlapping direction.

  Also in this embodiment, when the inner peripheral surface of the bush body 74 is bonded to the outer peripheral surface of the stabilizer bar 12, the first and second bracket fittings 76 are sandwiched between the first and second fastening pieces 42 and 46. Since the first and second contact surfaces 56 and 58 of the bonding jig 48 for relatively positioning and holding the first and second members 78 have a reduced surface roughness, the first and second bracket fittings 76 and 78 are coated. Can be prevented from adhering to the bonding jigs 48, 48 and peeling off from the first and second bracket fittings 76, 78.

  Further, when the first and second bracket fittings 76 and 78 are bonded to the bushing body 74, they may be bonded simultaneously with the bonding of the bushing body 74 to the stabilizer bar 12 as in the first embodiment. However, as in the present embodiment, the first and second bracket fittings 76 and 78 can be bonded to the bushing body 74 in advance.

  In the present embodiment, since the first and second intermediate plates 86 and 94 protrude outward in the axial direction from the first and second rubber elastic bodies 84 and 92, the first and second intermediate plates 86. , 94 can be sandwiched by the bonding jig 48 and supplementarily held at a predetermined relative position. In this case, the surface roughness of the first and second contact surfaces 56 and 58 of the bonding jig 48 is smaller than the surface roughness of the axial end portions of the first and second intermediate plates 86 and 94. It is desirable to be set to.

  As mentioned above, although embodiment of this invention was explained in full detail, this invention is not limited by the specific description. For example, the material of the bonding jig 48 is not particularly limited, and is preferably formed of a metal such as iron in consideration of durability, but may be formed of, for example, a synthetic resin. .

  Further, the first and second contact surfaces 56 and 58 of the bonding jig 48 are not necessarily limited to the structure provided with the coating layer 60. For example, the first and second contact surfaces 56 and 58 are polished or plated. It is possible to set the surface roughness small by performing post-processing or post-processing such as, or to obtain a predetermined surface roughness without performing post-processing such as coating or polishing. Further, the structure of the bonding jig is not limited to the illustrated one. For example, it is possible to improve the rigidity by forming a bag shape that opens in the insertion direction of the first and second fastening pieces 42 and 46. It is. Further, the first and second pressing portions 50 and 52 are separately formed and connected by a connecting member such as a bolt, thereby enabling adjustment of the distance between the opposing surfaces of the first and second contact surfaces 56 and 58. You can also.

  Moreover, the site | part hold | maintained by the jig | tool 48 for adhesion in the 1st, 2nd bracket metal fittings 20 and 22 is not necessarily limited to the 1st, 2nd fastening pieces 42 and 46, For example, the 1st, 2nd You may make it hold | maintain on both sides of the mounting parts 40 and 44. FIG.

  The bush main body 18 is not limited to the structure including the first and second intermediate plates 30 and 36, and may be configured by only the first and second rubber elastic bodies 28 and 34, for example. In addition, the bushing body 18 does not necessarily have a divided structure divided at two or more locations in the circumferential direction. For example, the bushing body 18 is composed of a rubber elastic body previously formed into a cylindrical shape and has one circumferential direction. A cut may be formed at a location so that the stabilizer bar 12 can be inserted into the mounting hole 38 through the cut.

10, 70: Stabilizer bar with stabilizer bush, 12: Stabilizer bar, 14, 72: Stabilizer bush, 18, 74: Bush body, 20, 76: First bracket fitting, 22, 78: Second bracket fitting, 30, 86 : First intermediate plate, 36, 94: second intermediate plate, 42: first fastening piece, 46: second fastening piece, 48: bonding jig, 50: first pressing portion, 52: second pressing portion, 54: connecting portion, 56: first contact surface, 58: second contact surface, 59: jig contact surface, 60: coating layer

Claims (13)

A cylindrical bush body formed of rubber elastic body is arranged in an extrapolated state on the stabilizer bar, and both sides of the bush body sandwich the bush body with the first bracket metal fitting and the second bracket metal fitting A method of manufacturing a stabilizer bar with a stabilizer bush attached from
The first bracket bracket and the second bracket bracket are extrapolated to the stabilizer bar by a bonding jig whose surface roughness is smaller than the surface roughness of the painted first bracket bracket and second bracket bracket. The bush main body is positioned with respect to the outer peripheral surface of the bush main body, and the bush main body is compressed between the first bracket metal fitting, the second bracket metal fitting, and the stabilizer bar to compress the inside of the bush main body. Pressing the peripheral surface against the outer peripheral surface of the stabilizer bar;
Heating the bushing body arranged in an extrapolated state to the stabilizer bar between the first bracket metal fitting and the second bracket metal fitting mutually positioned by the bonding jig to 120 degrees or more to thereby stabilize the stabilizer A method of manufacturing a stabilizer bar with a stabilizer bush, comprising the step of adhering to a bar.   The first bracket fitting includes a first fastening piece that protrudes from the bush body to the outer periphery, and the second bracket fitting includes a second fastening piece that protrudes from the bush body to the outer periphery. The first bracket fitting and the second bracket fitting are attached to the bushing body by sandwiching and holding the combined first fastening piece and the second fastening piece in the overlapping direction by the bonding jig. The bush main body is radially compressed between the first bracket metal fitting and the second bracket metal fitting and the stabilizer bar so that the inner peripheral surface of the bush main body becomes the outer peripheral surface of the stabilizer bar. The manufacturing method of the stabilizer bar with a stabilizer bush of Claim 1 pressed.   The manufacturing method of the stabilizer bar with a stabilizer bush of Claim 1 or 2 which adhere | attaches the said bush main body to at least one of said 1st bracket metal fitting and said 2nd bracket metal fitting.   The contact surface to the first bracket fitting and the contact surface to the second bracket fitting in the bonding jig are each covered with a coating layer, and the contact of the bonding jig covered with the coating layer The manufacturing method of the stabilizer bar with a stabilizer bush as described in any one of Claims 1-3 by which the surface roughness of the surface is made smaller than the surface roughness of this 1st bracket metal fitting and this 2nd bracket metal fitting.   The manufacturing method of the stabilizer bar with a stabilizer bush of Claim 4 with which the said coating layer of the said jig | tool for adhesion | attachment is formed with the fluororesin. The first bracket fitting and the second bracket fitting attached from both sides sandwiching the bush body are urged toward each other on the outer peripheral surface of a cylindrical bush body formed of a rubber elastic body so that they are attached to the stabilizer bar. A stabilizer bushing jig for holding the bush body arranged in an inserted state in a radially compressed state between the first bracket fitting and the second bracket fitting and the stabilizer bar,
The surface roughness of the contact surface to the first bracket metal fitting and the contact surface to the second bracket metal fitting is smaller than the surface roughness of the first bracket metal fitting and the second bracket metal fitting coated on the surface. A stabilizer bushing jig characterized by that.   The contact surface to the first bracket metal fitting and the contact surface to the second bracket metal fitting are each covered with a coating layer, and the surface roughness of the contact surface covered with the coating layer is the first bracket metal fitting. The stabilizer bushing jig according to claim 6, wherein the jig is smaller than the surface roughness of the second bracket fitting.   8. The stabilizer bushing jig according to claim 7, wherein the coating layer is made of a fluororesin.   A first pressing portion having a contact surface to the first bracket metal fitting and a second pressing portion having a contact surface to the second bracket metal fitting, and the first pressing portion and the second pressing portion are The first bracket fitting and the second bracket fitting are arranged to face each other in the overlapping direction, and further include a connecting portion that connects the first pressing portion and the second pressing portion to each other. The stabilizer bushing jig according to any one of claims 8 to 9. A cylindrical bushing body formed of a rubber elastic body and attached to the stabilizer bar in an extrapolated state is provided, and a first bracket fitting and a second bracket fitting are attached to the bushing body on the outer peripheral surface of the bushing body. In the stabilizer bush attached from both sides sandwiched,
The first bracket metal fitting and the second bracket metal fitting hold the first bracket metal fitting and the second bracket metal fitting in an approaching state, and the bush body is attached to the first bracket metal fitting, the second bracket metal fitting, and the stabilizer bar. It is possible to mount a bonding jig that holds the compressed state in the radial direction between the two, and a jig contact surface that contacts the contact surface of the bonding jig is provided. A stabilizer bush, characterized in that the surface is coated and the surface roughness of the coated jig contact surface is larger than the surface roughness of the contact surface of the bonding jig.   The intermediate plate extending in the circumferential direction is provided at a radial intermediate portion of the bush main body, and the intermediate plate is disposed on the inner side in the axial direction than the axial end of the bush main body. Stabilizer bush.   The stabilizer bush according to claim 10 or 11, wherein at least one of the first bracket fitting and the second bracket fitting is bonded to the bush body.   The first bracket fitting includes a first fastening piece that protrudes toward the outer periphery of the bush body, and the second bracket fitting includes a second fastening piece that protrudes toward the outer periphery of the bush body. The first fastening piece and the second fastening piece are overlapped with each other when the first bracket fitting and the second bracket fitting are attached to the bushing body. Stabilizer bush.

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