JP4861945B2 - Manufacturing method of stabilizer bar with stabilizer bush - Google Patents

Description

  The present invention relates to a method for manufacturing a stabilizer bar with a stabilizer bush, and more particularly, a stabilizer bush for fixing a stabilizer bar to a body or a frame of a vehicle such as an automobile in a vibration-proof manner. It relates to an advantageous method of manufacturing a stabilizer bar with a bush.

  In this type of stabilizer bar with a stabilizer bush, the stabilizer bush is fixed to a cylindrical rubber elastic body having an inner hole extending in the axial direction and attached to the vehicle body in an externally inserted state of the cylindrical rubber elastic body. The stabilizer bar is adhesively fixed to the inner peripheral surface of the inner hole in a state where the stabilizer bar is inserted into the inner hole of the cylindrical rubber elastic body in the stabilizer bush. Those having the following are conventionally known.

  In the stabilizer bar with the stabilizer bush having such a structure, the stabilizer bar is bonded and fixed in the inner hole of the cylindrical rubber elastic body of the stabilizer bush. The occurrence of stick-slip between the stabilizer bar and the cylindrical rubber elastic body is advantageously eliminated by the input of a twist to the stabilizer bar, etc. It is possible to effectively prevent the vibration-proof characteristic from being lowered.

  By the way, when manufacturing the conventional stabilizer bar with the stabilizer bush as described above, generally, the inner peripheral surface of the inner hole of the cylindrical rubber elastic body and the insertion portion of the stabilizer bar to be inserted into the inner hole. After applying an adhesive to at least one of the outer peripheral surfaces, the insertion portion of the stabilizer bar is inserted into the inner hole of the cylindrical rubber elastic body, and then the cylindrical rubber is pressed with a predetermined pressure jig. By pressing the bracket externally fixed to the elastic body from the outside, an operation of pressing the inner peripheral surface of the inner hole of the cylindrical rubber elastic body to the outer peripheral surface of the insertion portion of the stabilizer bar is performed. Thus, the stabilizer bar is bonded to the inner peripheral surface of the inner hole of the cylindrical rubber elastic body, so that the target stabilizer bar with the stabilizer bush can be obtained.

  However, when manufacturing a stabilizer bar with a stabilizer bush by such a conventional method, when the cylindrical rubber elastic body and the stabilizer bar are bonded, excellent use durability based on sufficient adhesive strength is obtained. Because the bracket is pressed with a large force by the pressing jig, the cylindrical rubber elastic body is excessively compressed at that time, which causes the spring characteristics of the cylindrical rubber elastic body to change. There was a fear.

  Under such circumstances, for example, in Patent Document 1 below, a cylindrical rubber elastic body is disposed at an inner peripheral portion and an outer peripheral portion of the cylindrical rubber elastic body with respect to the axial perpendicular direction intermediate portion. The stabilizer bushing is formed by embedding two partition members that have a half-cylindrical cylindrical shape.The stabilizer bush has an inner peripheral surface of the inner hole of the cylindrical rubber elastic body and an outer peripheral surface of the insertion portion of the stabilizer bar. After the adhesive is applied in advance, the insertion portion of the stabilizer bar is inserted into the inner hole of the cylindrical rubber elastic body, and then the axial direction of each partition member protruding from the end surfaces on both axial sides of the cylindrical rubber elastic body Both ends are pressed inward in the direction perpendicular to the axis with a pressurizing jig, so that the inner peripheral surface of the inner hole of the cylindrical rubber elastic body is pressed against the outer peripheral surface of the insertion portion of the stabilizer bar and bonded. Stabilizer bush Stabilizer bar manufacturing method of the attached have been proposed.

  According to such a manufacturing method, when the cylindrical rubber elastic body and the stabilizer bar are bonded, even if the partition member is pressed with a large force by a pressurizing jig, Only the inner rubber part located inside the partition member is compressed, and the outer rubber part located outside it is not compressed, so that the influence of excessive compression during bonding is not affected by the outer rubber. It is possible to avoid the occurrence in the portion, and to secure a sufficient adhesive force between the cylindrical rubber elastic body and the stabilizer bar and a stable securing of desired spring characteristics in the cylindrical rubber elastic body. is there.

  However, the inventors of the present invention have studied in detail about such a conventional method for manufacturing a stabilizer bar with a stabilizer bush. In such a manufacturing method, when the stabilizer bar is bonded and fixed in the inner hole of the cylindrical rubber elastic body, It has been found that the pressurizing jig used in the process hinders the improvement of workability and economic efficiency in the manufacturing work of the stabilizer bar with the stabilizer bush.

  That is, the pressurizing jig used for manufacturing the stabilizer bar with the stabilizer bush according to the conventional method can generally approach or be separated from each other on both sides in the direction perpendicular to the axis with the two axial ends of the plurality of partition members interposed therebetween. And a relatively high-cost structure that mechanically approaches or separates the pressure bodies. And when manufacturing a stabilizer bar with a stabilizer bush, a so-called batch type is generally adopted in which several dozen stabilizer bars with a stabilizer bush are manufactured simultaneously in one cycle of manufacturing work. However, at least as many as the number of stabilizer bars with stabilizer bushes manufactured simultaneously in one cycle of manufacturing operation are used.

  Therefore, when manufacturing stabilizer bars with stabilizer bushes by the conventional method, dozens of expensive pressure jigs are required, which is a large economic burden, and the cylindrical rubber elastic body After the end of the work of attaching the stabilizer bar to the inner hole, the laborious work of removing the pressure jig from the stabilizer bush had to be carried out one by one, which caused a heavy labor burden on the operator. It is.

JP 2006-264435 A

  Here, the present invention has been made in the background as described above, and the problem to be solved is a sufficient adhesive force between the cylindrical rubber elastic body and the stabilizer bar, and the cylinder. To provide a stabilizer bar with a stabilizer bush that can be manufactured at a lower cost with excellent workability, in which a stabilizer bar with a stabilizer bush that can stably ensure desired spring characteristics in a rubber elastic body is provided. is there.

  In the present invention, in order to solve such a problem, the gist of the present invention is a cylindrical rubber elastic body having an inner hole extending in the axial direction, and an extrapolation to the cylindrical rubber elastic body. A bracket fixed to the vehicle body and attached to the vehicle body, and the cylindrical rubber elastic body at the middle portion in the direction perpendicular to the axis of the cylindrical rubber elastic body. A plurality of partition members each having a split cylindrical body shape having a split surface extending in the axial direction embedded so as to be partitioned into a part on the side, and the cylinder in the stabilizer bush A stabilizer in which the stabilizer bush is fixedly attached to the stabilizer bar by being adhesively fixed in the inner hole of the rubber elastic body in a state where the stabilizer bar is inserted and positioned. A method of manufacturing a stabilizer bar with a bush, wherein: (a) a plurality of the partition members are positioned such that the divided surfaces are spaced apart from each other in a direction perpendicular to the axis; Is projected from the end surface of one end in the axial direction of the cylindrical rubber elastic body corresponding thereto to form a first projecting portion, while the other end in the axial direction of each partition member is formed. A step of preparing the stabilizer bush having a structure in which an end portion is protruded from an end surface of the end portion on the other side in the axial direction of the cylindrical rubber elastic body corresponding thereto, and a second protrusion portion is formed; (B) At least one of the inner peripheral surface of the inner hole of the cylindrical rubber elastic body and the outer peripheral surface of the insertion portion of the stabilizer bar to be inserted into the inner hole of the cylindrical rubber elastic body And after forming the adhesive layer, A step of inserting the insertion portion of the stabilizer bar into the inner hole of the cylindrical rubber elastic body, and (c) a tightening member having a form extending in a circumferential direction of the stabilizer bar, the first of the plurality of partition members. A step of externally fitting the first protrusion and the second protrusion, and (d) a fastening member externally fitted to the first protrusion and the second protrusion, respectively, The projecting portion and the second projecting portion are fixed in a state of being tightened so that a tightening force inward in the direction perpendicular to the axis can be applied, and based on the tightening force of the tightening member. And a method of manufacturing a stabilizer bar with a stabilizer bush, comprising: a step of pressing and bonding an inner peripheral surface of an inner hole of the cylindrical rubber elastic body to an outer peripheral surface of an insertion portion of the stabilizer bar. .

  That is, in the method of manufacturing the stabilizer bar with the stabilizer bush according to the present invention, the first and second protrusions of the partition member embedded in the axial intermediate portion of the cylindrical rubber elastic body are the fastening members. By applying pressure in the direction perpendicular to the axis based on the tightening force of the stabilizer, the outer peripheral surface of the stabilizer bar inserted into the inner hole of the cylindrical rubber elastic body is moved into the inner hole of the cylindrical rubber elastic body. It is brought into pressure contact with the peripheral surface and is fixed by adhesion. Therefore, when the stabilizer bar is bonded and fixed in the inner hole of such a cylindrical rubber elastic body, only the inner rubber portion located on the inner side of the partition member in the cylindrical rubber elastic body is compressed. However, the outer rubber portion located outside is not compressed, so that the outer rubber portion may be affected by excessive compression when the stabilizer bar is bonded into the inner hole of the cylindrical rubber elastic body. Thus, sufficient adhesive force between the cylindrical rubber elastic body and the stabilizer bar and stable securing of desired spring characteristics in the cylindrical rubber elastic body can be advantageously achieved. .

  In particular, in the method for manufacturing a stabilizer bar with a stabilizer bush according to the present invention, when the stabilizer bar is bonded into the inner hole of the cylindrical rubber elastic body, the first and second protrusions of the partition member are pivoted. Unlike the pressurizing jig used in the conventional method, the tightening member used to press inward in the perpendicular direction has a mechanical structure and simply extends in the circumferential direction of the stabilizer bar. It has a very simple structure that it has, and is therefore composed of a sufficiently inexpensive member.

  In addition, since such a tightening member is fixed to the first and second protrusions of the partition member, after the stabilizer bar is bonded and fixed in the inner hole of the cylindrical rubber elastic body, the pressure treatment is performed. Unlike the conventional method in which the troublesome work for removing the tool from the first and second protrusions is forced, the process of removing the fastening member is advantageously reduced, and the stabilizer with the desired stabilizer bush is provided. Simplification of the bar manufacturing operation can be advantageously achieved.

  In addition, when the fastening member is fixed to the first and second projecting portions, for example, a jig for fastening the fastening member to the first and second projecting portions by tightening the fastening member. Even in the case where is used, a plurality of fastening members can be fastened and fixed using a single jig. Therefore, the jig for fixing the fastening member to the first and second protrusions is the only one when manufacturing a plurality of stabilizer bars with stabilizer bushes at the same time in one cycle of manufacturing work by batch method. Therefore, the increase in cost due to the use of such a jig can be suppressed very effectively.

  According to one of the preferred embodiments of the method of manufacturing a stabilizer bar with a stabilizer bush according to the present invention, the partition member has a split cylindrical body shape, and the fastening member is an annular ring metal fitting. The fastening member composed of the ring metal fitting is plastically deformed by a diameter reducing process or a caulking process in a state in which the fastening member is externally fitted to the first projecting part and the second projecting part, respectively. Thus, the first projecting portion and the second projecting portion are fixed while acting on the inner side in a direction perpendicular to the axis.

  In this embodiment, the fastening member is made of a simpler and more inexpensive ring fitting, and the fastening member made of such a ring fitting is fixed to the first and second protrusions. For example, it can be performed by a relatively easy operation using an apparatus generally used in press working such as a drawing apparatus or a caulking apparatus. Therefore, the target stabilizer bar with the stabilizer bush can be manufactured more easily and at low cost.

  Further, according to one of the other advantageous aspects of the method of manufacturing a stabilizer bar with a stabilizer bush according to the present invention, at each distal end of the first protrusion and the second protrusion in the partition member, An engagement protrusion that protrudes outward in a direction perpendicular to the axis is integrally provided, and the fastening member is fixed to each of the first protrusion and the second protrusion. By being engaged with the engaging protrusions, the fastening members are prevented from coming out from the first protrusions and the second protrusions outward in the axial direction.

  According to this aspect, even if the manufactured stabilizer bar with the stabilizer bush is mounted on the vehicle and used, the tightening member from the first protrusion or the second protrusion Can be reliably prevented from slipping out in the axial direction, so that the tightening members that have slipped out of the first and second protrusions can be attached to both ends of the stabilizer bar in the axial direction and the periphery thereof. It can be prevented in advance that such parts are damaged by contact with other members that are positioned.

  Furthermore, according to one of the desirable aspects of the manufacturing method of the stabilizer bar with a stabilizer bush according to the present invention, with respect to the first protrusion and the second protrusion of the partition member, A rubber film covering the entire inner peripheral surface is provided integrally with the cylindrical rubber elastic body.

  In this embodiment, even if the first and second protrusions of the partition member are brought close to the outer peripheral surface of the stabilizer bar by the tightening force of the tightening member, the first and second A rubber film is interposed between the protruding portion and the outer peripheral surface of the stabilizer bar, so that direct contact between the first and second protruding portions and the outer peripheral surface of the stabilizer bar can be avoided. As a result, when the stabilizer bar is twisted, etc., abnormal noise caused by the relative displacement of the stabilizer bar in the circumferential direction with respect to the stabilizer bar and the first and second protrusions, and the outer peripheral surface of the stabilizer bar The occurrence of damage or the like can be advantageously prevented.

  Furthermore, according to one of the other preferable aspects of the method of manufacturing a stabilizer bar with a stabilizer bush according to the present invention, the rubber film is formed on the inner peripheral side of the partition member of the cylindrical rubber elastic body. The wall thickness is less than the wall thickness.

  According to this aspect, when the inner peripheral surface of the inner hole of the cylindrical rubber elastic body is pressed against the outer peripheral surface of the insertion portion of the stabilizer bar based on the tightening force of the tightening member, Out of the rubber part on the inner peripheral side of the partition member of the cylindrical rubber elastic body compressed in the direction perpendicular to the axis by an appropriate pressure contact, both end portions in the axial direction protruding outward in the axial direction are the first part of the partition member. And it comes to be compressed in the axial direction between the second protrusion and the outer peripheral surface of the stabilizer bar. Therefore, the entire inner peripheral surface of the inner hole of the cylindrical rubber elastic body is securely pressed against the outer peripheral surface of the stabilizer bar, and as a result, the adhesive force between the cylindrical rubber elastic body and the stabilizer bar. However, it can be ensured more sufficiently.

  As is apparent from the above description, according to the method of manufacturing a stabilizer bar with a stabilizer bush according to the present invention, a sufficient adhesive force between the cylindrical rubber elastic body and the stabilizer bar, and a desired level of the cylindrical rubber elastic body. A stabilizer bar with a stabilizer bush that can stably ensure the spring characteristics can be manufactured at a lower cost with sufficiently excellent workability.

  Hereinafter, in order to clarify the present invention more specifically, embodiments of the present invention will be described in detail with reference to the drawings.

  First, in FIG. 1, a stabilizer bar with a stabilizer bush of an automobile as an embodiment of a stabilizer bar with a stabilizer bush manufactured according to the method of the present invention is schematically shown in its front form. As can be seen from FIG. 1, the stabilizer bar with the stabilizer bush of this embodiment has one stabilizer bush 12 at each axially opposite end portion of the stabilizer bar 10 made of a metal round bar having a predetermined length. It is configured to be fixed to each position.

  And the stabilizer bush 12 attached to the stabilizer bar 10 is a main body provided so that the inner hole 14 which is bonded and fixed in a state where the stabilizer bar 10 is inserted extends in the axial direction, as shown in FIGS. It has a basic structure similar to that of the prior art, including a rubber elastic body 16 and a bracket 18 to which the main rubber elastic body 16 is fixed and attached to the vehicle body.

  More specifically, the main rubber elastic body 16 of the stabilizer bush 12 has a substantially thick cylindrical shape as a whole. That is, here, the main rubber elastic body 16 constitutes a cylindrical rubber elastic body. In the cylindrical main rubber elastic body 16, the slit 20 that reaches the outer peripheral surface from the inner peripheral surface is provided at one place on the periphery of the main rubber elastic body 16 in the axial direction. It is provided to extend.

  Thereby, the cylindrical wall part located on the opposite side to the cutting part 20 in the radial direction, that is, the cylindrical wall part located symmetrically with the cutting part 20 with respect to the central axis P of the main rubber elastic body 16 It can be rotated as a center. In other words, the cylindrical wall portion can be used as a hinge portion so that the inner hole 14 can be opened sideways. And in such an expanded state, the insertion part 21 which should be penetrated in the inner hole 14 of the stabilizer bar 10 can be easily penetrated in the inner hole 14, and can be accommodated now (FIG. 4). reference).

  In addition, two partition members 22 are embedded in the main rubber elastic body 16. The partition member 22 is sufficiently thinner than the main rubber elastic body 16 and has a semicircular shape having an inner diameter larger than the main rubber elastic body 16 by a predetermined dimension and an axial length larger by a predetermined dimension. It is composed of a divided cylindrical metal fitting having an axially divided surface and exhibiting no cross-sectional shape.

  The two partition members 22 and 22 are positioned coaxially with the main rubber elastic body 16 at the radial intermediate portion inside the main rubber elastic body 16 and also have a circumferential end face 23 (axial direction). The split portion 20 is located between circumferential end faces 23 facing each other at a predetermined distance in the radial direction or circumferential direction and facing each other on one side in the circumferential direction. Are arranged as follows. Further, under such an arrangement, both end portions in the axial direction are positioned so as to protrude from the both end surfaces in the axial direction of the main rubber elastic body 16 by a predetermined length. Furthermore, each end surface 23 in the circumferential direction of each partition member 22 is an inclined surface that is inclined inward in the circumferential direction as it goes radially outward, thereby facing the circumferential direction of the two partition members 22. The distance between the end faces 23 is configured to gradually increase toward the outer side in the radial direction.

  Thus, the two partition members 22, 22 divide the main rubber elastic body 16 into the inner rubber portion 24 positioned on the inner peripheral side with respect to the radial direction intermediate portion and the outer rubber portion 26 positioned on the outer peripheral side with respect to the inner rubber portion. It is buried so as to partition. Here, the difference between the inner diameters of the partition members 22 and the main rubber elastic body 16 is made sufficiently smaller than the difference between the outer diameters thereof, so that the thickness of the inner rubber portion 24 is reduced. The outer rubber portion 26 is sufficiently thinner than the wall thickness. Further, the inner rubber portion 24 and the outer rubber portion 26 include a portion located between the end surfaces 23 in the circumferential direction of the two partition members 22 and 22 on the side opposite to the slit portion 20 in the radial direction. The main rubber elastic bodies 16 are connected to each other.

  Further, in the two partition members 22, 22, the end portion on the one axial side (right side in FIG. 3) of the partition member 22 protruding from the end surface on the one side (right side in FIG. 3) of the main rubber elastic body 16 is the first. One end of the partition rubber member 22 protruding from the end surface on the other side (left side in FIG. 3) of the main rubber elastic body 16 is the second projecting portion 28a. Projecting portion 28b. Each of the projecting portions 28 a and 28 b is entirely covered with a rubber film 29 that extends integrally from the inner rubber portion 24 and the outer rubber portion 26. The rubber film 29 is sufficiently thinner than the inner rubber part 24.

  And here, the first projecting portions 28a of the two partition members 22 and 22 and the second projecting portions 28b are arranged in the same manner as in the arrangement form of the two partition members 22 and 22, respectively. End portions 23 in the circumferential direction of the projecting portions 28a and 28b are arranged to face each other with a predetermined distance in the radial direction or the circumferential direction so as to form a ring shape as a whole. In addition, one fastening ring 31 as a fastening member is provided for each of the two first protrusions 28a and 28a and the two second protrusions 28b and 28b arranged in a ring shape. It is fitted and fixed.

  The tightening ring 31 is an annular ring having a thick wall thickness and an inner diameter that is larger by a predetermined dimension than the outer diameter of each of the first and second projecting portions 28a and 28b made of a split cylindrical metal fitting. It consists of metal fittings. As will be described later, the tightening ring 31 is fitted on the two first protrusions 28a and 28a and the two second protrusions 28b and 28b arranged in a ring shape one by one. Then, a known caulking in which two portions located on both sides of one direction in the radial direction (left and right direction in FIG. 2) are crushed in a direction (vertical direction in FIG. 2) perpendicular to the one direction in the radial direction. In a state where the first and second projecting portions 28a and 28b are tightened so that a radially inward tightening force can be applied to each of the first and second projecting portions 28a and 28b by being reduced in diameter by processing or the like. It is plastically deformed and fixed.

  Thereby, based on the tightening force of the tightening ring 31 that is fastened and fixed, the first and second projecting portions 28a and 28b, and the entire partition member 22 are entirely tightened. Accordingly, the inner rubber portion 24 located inside each partition member 22 is pressurized, and the inner peripheral surface of the inner hole 14 is moved inward. The stabilizer bar 10 inserted in the hole 14 is pressed against the outer peripheral surface of the insertion portion 21.

  Further, in the inner peripheral portion of the main rubber elastic body 16, the main rubber elastic body 16 portion including a portion located between the circumferential end surfaces 23 of the two partition members 22, 22, that is, the main rubber elastic body 16 The portion where the cut portion 20 is formed and the portion opposite to the formation portion of the cut portion 20 (the portion where the cut portion 20 is formed with respect to the central axis P of the main rubber elastic body 16) The main body rubber elastic body 16 portion (symmetrically located) is provided with one groove portion 27 in communication with the inner hole 14 one by one.

  The groove 27 extends radially outward from the inner circumferential surface of the two main rubber elastic body 16 portions over the entire length of the main rubber elastic body 16 in the axial direction (here, horizontal To extend in the direction). Further, the extending length of the groove portion 27 in the radial direction is a length that does not reach from the inner peripheral surface of the main rubber elastic body 16 to the outer peripheral surface. Here, from the inner peripheral surface of the main rubber elastic body 16, the groove portion 27, the length is the same as or slightly shorter than the distance to the outer peripheral surface of the circumferential end of each of the two partition members 22 and 22 facing each other on both sides in the circumferential direction. That is, the groove part 27 is located between the part formed in the inner rubber part 24 located on the inner peripheral side of the two partition members 22, 22 and the respective end faces 23 in the circumferential direction of the two partition members 22, 22. And a portion formed in the main rubber elastic body 16 portion.

  As a result, the groove 27 is located symmetrically with respect to the central axis P of the main rubber elastic body 16 and is located between the end faces 23 of the two partition members 22, 22. Each of the inner peripheral portions is formed so as to extend in the radial direction with a length that does not reach the outer rubber portion 26. Thus, the cutting portion 20 is configured to reach the outer peripheral surface of the main rubber elastic body 16 from the bottom surface of one of the two groove portions 27. Further, the rubber elastic body of the main body that functions as a hinge part when the main rubber elastic body 16 is laterally expanded by the cutting portion 20 and is located on the opposite side of the cut portion 20 in the radial direction. The 16 portions are constituted by only the outer rubber portion 26 due to the presence of the other groove portion 27 of the two groove portions 27, and are thinner than the other portions.

  Furthermore, the width of the groove 27 is gradually increased toward the outer side in the radial direction, in other words, toward the bottom surface, and is also a portion formed between the end surfaces 23 of the two partition members 22 and 22. The width is the same as the distance between these end faces 23. Accordingly, the maximum width of the groove 27 is the same as the maximum value of the distance between the end faces 23 in the circumferential direction of the two partition members 22 and 22 (the distance between the end edges on the outer peripheral face side of each end face 23). Moreover, each end surface 23 of the two partition members 22 and 22 is exposed to each groove part 27 over the full length of an axial direction.

  On the other hand, in the thick outer rubber portion 26 constituting the outer peripheral side portion of the main rubber elastic body 16, one outer flange portion 30 is integrally formed at each end portion in the axial direction. Each of the outer flange portions 30 has a substantially annular plate shape protruding at a predetermined height radially outward at each end on both axial sides of the outer rubber portion 26 and continuously extending in the circumferential direction. An inner end surface located inward in the axial direction of the portion 26 is an engagement surface 32 having a substantially annular surface.

  Further, at a portion positioned inward in the axial direction with respect to the outer flange portion 30 at the axially opposite end portions of the outer rubber portion 26, a straight portion 34 has a predetermined width and half of the thickness of the main rubber elastic body 16. Each of which has a groove shape that is larger than the predetermined dimension and has a depth that does not reach the partition member 22, and is provided one by one, and is further positioned between the straight portions 34. The intermediate portion in the axial direction is a press-fit portion 36 having a cylindrical outer peripheral surface.

  As a result, the outer rubber portion 26 is substantially divided into the press-fit portions 36 positioned inward in the axial direction and the outer flange portions 30 positioned outward in the axial direction of the respective curled portions 34 at the respective curled portions 34. Is divided. Thus, for example, when the press-fitting portion 36 is pressed inward in the radial direction or in the circumferential direction and elastically deformed, the elastic deformation action is exerted on each outer flange portion 30, and each of the outer flanges. It can be avoided as much as possible that the portion 30 is elastically deformed together with the press-fit portion 36.

  On the other hand, as shown in FIGS. 1 to 3, the bracket 18 has a substantially thick cylindrical tubular portion 38 and a predetermined height on both sides in the diametrical direction on the outer peripheral surface of the tubular portion 38. It is comprised with the cylindrical metal fitting which has the rectangular block-shaped attachment parts 40 and 40 integrally formed one each. The cylindrical portion 38 of the bracket 18 has an insertion hole 42 having a cylindrical inner peripheral surface having an inner diameter smaller than the outer diameter of the press-fit portion 36 of the outer rubber portion 26 in the main rubber elastic body 16. ing. Further, the outer diameter of the cylindrical portion 38 is larger than the outer diameters of the two outer flange portions 30 in the outer rubber portion 26, and the axial length thereof is set to the two outer flanges. The distance between the engaging surfaces 32 of the portion 30 is substantially the same. Each mounting portion 40 of the bracket 18 is formed with a bolt hole 44 through which a bolt for attaching the bracket 18 to the body of the automobile is inserted in the height direction.

  The main rubber elastic body 16 is inserted and fixed in the insertion hole 42 of the cylindrical portion 38 of the bracket 18 by being press-fitted in the press-fit portion 36. Accordingly, the main rubber elastic body 16 and the bracket 18 are integrally assembled to constitute the stabilizer bush 12. Further, two of the stabilizer bushes 12 are used, and the two insertion portions 21 and 21 located on both sides in the axial direction of the stabilizer bar 10 are inserted into the inner holes 14 of the main rubber elastic body 16 of the two stabilizer bushes 12. A stabilizer bar with a stabilizer bush is formed by fixing each inserted one by one.

  Although the stabilizer bar with the stabilizer bush having such a structure is not shown, the stabilizer bar 10 is fixed to, for example, a suspension arm (not shown) of an automobile at both ends in the axial direction. On the other hand, the bracket 18 of each stabilizer bush 12 is attached to the body of the automobile with a fixing bolt inserted through the bolt hole 44 of each attachment portion 40 of the bracket 18.

  Thus, the stabilizer bar 10 is supported by the two stabilizer bushes 12 and 12 in an anti-vibration manner with respect to the automobile, and is input between the stabilizer bar 10 and the automobile body in the up-down direction and the front-rear direction. Further, torsional vibration (vibration in the rotational direction around the axis of the stabilizer bar 10) or the like input to the stabilizer bar 10 causes elastic deformation of the press-fit portion 26 of the main rubber elastic body 16 in each stabilizer bush 12. It can be absorbed on the basis. Further, the vibration absorbing action based on the elastic deformation of the press-fit portion 26 can be exhibited uniformly over substantially the entire press-fit portion 26.

  By the way, when manufacturing a stabilizer bar with a stabilizer bush in which the stabilizer bush 12 composed of an integral assembly of the main rubber elastic body 16 and the bracket 18 as described above is mounted in a fixed position, first, for example, the stabilizer bar 10 Are prepared and prepared by conventional techniques.

  In addition, by performing a known mold forming technique such as known insert injection molding using the two partition members 22 and 22 as insert products, the two partition members 22 and 22 are placed inside. The inner circumferential side and the outer circumferential side of the partition members 22 are embedded as inner rubber portions 24 and outer rubber portions 26, respectively, and both end portions in the axial direction of the partition members 22 are axially disposed. A main rubber elastic body 16 is formed and prepared as first and second projecting portions 28a and 28b projecting a predetermined dimension in the axial direction from both end faces.

  In addition, in the main rubber elastic body 16 thus prepared, the first protrusions 28a, 28a of the two partition members 22, 22 are positioned at a predetermined distance in the radial direction while being ring-shaped as a whole. The second protrusions 28b, 28b are also arranged so as to form a ring shape as a whole while being spaced apart from each other by a predetermined distance in the radial direction. Further, a rubber film 29 thinner than the inner rubber part 24 is formed integrally with the main rubber elastic body 16 on each of the protrusions 28a and 28b so as to cover the entire surface thereof.

  Although not shown in the figure, in this step, a cylindrical shape having the same outer diameter as that of the stabilizer bar 10 is formed in the molding cavity of the mold for providing the main rubber elastic body 16, and the radial direction of the outer peripheral surface thereof. On both sides, a core mold in which protrusions having a shape corresponding to the groove portion 27 are integrally formed is disposed, and on one side and the other side in the thickness direction of the two protrusions of such a core mold, Injection molding is performed in a state where the partition members 22 are placed in contact with the respective protrusions one by one and are arranged in the molding cavity. Thereby, the two partition members 22 and 22 are embedded in a desired position on the same axis within the main rubber elastic body 16 in a surely positioned state and symmetrical with respect to the central axis P. One groove portion 27 is formed in each of the inner peripheral portions located at the positions.

  Thereafter, the main rubber elastic body 16 portion located between the circumferential end surfaces of the two partition members 22 and 22 is cut using a predetermined jig or the like, so that the cut portion 20 is formed. Subsequently, of the inner peripheral surface of the inner hole 14 of the main rubber elastic body 16 and the outer peripheral surface of the insertion portion 21 which is the axial end portion side portion of the stabilizer bar 10 to be inserted into the inner hole 14. An appropriate adhesive made of a thermosetting resin or the like is applied to at least one of these to form an adhesive layer.

  Next, as shown in FIGS. 4 (a) and 4 (b), the main rubber elastic body 16 has a cylindrical wall portion positioned on the opposite side of the cut portion 20 in the radial direction as a hinge portion, and has an inner hole. 14 is expanded so as to open toward the side, and the insertion portion 21 in which the adhesive layer of the stabilizer bar 10 is formed is accommodated in the inner hole 14 of the main rubber elastic body 16. The stabilizer bar 10 is inserted into the inner hole 14 of the main rubber elastic body 16.

  Subsequently, as shown by a two-dot chain line in FIG. 5, the two first protrusions 28 a and 28 a respectively protruded from the end surface on one side of the main rubber elastic body 16 in a ring shape. On the other hand, the fastening ring 31 having an inner diameter larger than the outer diameter of the first protruding portion 28a is externally fitted and arranged. In addition, although not shown in the drawings, the two second projecting portions 28b and 28b that project from the other end face of the main rubber elastic body 16 in a ring shape are also tightened. Attached ring 31 is externally fitted and arranged.

  Thereafter, a known caulking device (not shown) is used, and the two clamping rings 31 that are externally fitted to the two first protrusions 28a and 28a and the two second protrusions 28b and 28b, respectively. , 31 with respect to two portions located on both sides of one direction in the radial direction (the direction of action in FIG. 5), respectively, are arranged in a direction perpendicular to the one direction (in FIG. 5). The caulking process for crushing in the vertical direction is performed by a conventional method.

  As a result, as shown by the solid line in FIG. 5, the fastening ring 31 fitted on the two first protrusions 28a, 28a is plastically deformed so as to reduce the diameter, thereby The protrusions 28a and 28a are fixed in a tightened state so that a radially inward tightening force can be applied thereto. Similarly, the fastening ring 31 that is externally fitted to the two second projecting portions 28b, 28b is also caulked by a caulking device, so that it is plastically deformed so as to reduce its diameter. The two second projecting portions 28b and 28b are fixed in a state of being tightened so that a radially inward tightening force can be applied.

  At this time, based on the fastening force of each fastening ring 31 fixed to each of the two first protrusions 28a, 28a and the two second protrusions 28b, 28b, the two first protrusions 28a, 28a are provided. The protrusions 28a, 28a and the second protrusions 28b, 28b are displaced so as to approach the stabilizer bar 10 inserted into the inner hole 14 of the main rubber elastic body 16. Thereby, the inner rubber part 24 of the main rubber elastic body 16 is compressed between the two partition members 22, 22 and the insertion part 21 of the stabilizer bar 10 inserted in the inner hole 14. The inner peripheral surface of the inner rubber portion 24 (the inner peripheral surface of the inner hole 14) is in pressure contact with the outer peripheral surface of the insertion portion 21 of the stabilizer bar 10.

  And in the press contact state of the inner peripheral surface of the inner rubber portion 24 against the outer peripheral surface of the insertion portion 21 of the stabilizer bar 10, the stabilizer bar 10 is left in a normal temperature or high temperature atmosphere depending on the type of the adhesive forming the adhesive layer. Equally, the curing operation of the adhesive layer is performed. As a result, the insertion portion 21 of the stabilizer bar 10 is firmly bonded and fixed to the inner peripheral surface of the inner hole 14 of the main rubber elastic body 16 (inner peripheral surface of the inner rubber portion 24). An integrated product of the body 16 and the stabilizer bar 10 is obtained. Here, two rubber elastic bodies 16 are used, and two insertion portions 21 positioned on both axial sides of one stabilizer bar 10 in the respective inner holes 14 of the two main rubber elastic bodies 16. , 21 are bonded to each other, so that the one-piece product is constituted by two main rubber elasticity 16, 16 and one stabilizer bar 10.

  In this process, the protrusions 28 a and 28 b are deformed so as to approach the stabilizer bar 10 based on the tightening force of the tightening rings 31. Only the rubber part 24 is compressed, and the outer rubber part 26 that exhibits the vibration-proof performance inherent to the stabilizer bush 12 is not compressed. Therefore, when the insertion portion 21 of the stabilizer bar 10 is bonded to the inner peripheral surface of the inner hole 14 of the main rubber elastic body 16, it is avoided that various adverse effects due to the compressive strain occur in the outer rubber portion 26. The desired spring characteristics in the main rubber elastic body 16 can be stably secured.

  Then, as shown in FIG. 6, an integrated product 46 consisting of the stabilizer bar 10 and the two main rubber elastic bodies 16 (only one is shown in FIG. 6) is separately produced by press molding or casting. The two brackets 18 (only one is shown in FIG. 6) are inserted into the insertion holes 42 of the cylindrical portions 38.

  As shown in FIGS. 2 and 3, the insertion operation of the integrated body 46 of the stabilizer bar 10 and the main rubber elastic body 16 into the insertion hole 42 of the cylindrical portion 38 is performed by the main rubber elastic body 16 being outside. This is performed by press-fitting into the insertion hole 42 of the tubular portion 38 of the bracket 18 at the press-fit portion 36 of the rubber portion 26. Then, the integrated product 46 composed of the stabilizer bar 10 and the two main rubber elastic bodies 16 is fixed to the cylindrical portions 38 of the two brackets 18 in each main rubber elastic body 16.

  At this time, the engagement surfaces 32 of the two outer flange portions 30 of the outer rubber portion 26 in the main rubber elastic body 16 are brought into contact with and engaged with both axial end surfaces of the cylindrical portions 38 of the brackets 18 respectively. Thereby, the easy removal of the main rubber elastic body 16 from the insertion hole 42 of the cylindrical portion 38 is prevented. In each outer flange portion 30, the end surface located on the outer side in the axial direction opposite to the engaging surface 32 is an inclined surface that is inclined inward in the axial direction toward the outer side in the radial direction. Thereby, when the main rubber elastic body 16 is inserted (press-fitted) into the insertion hole 42 of the cylindrical portion 38 of the bracket 18, the inclined end surface positioned outward in the axial direction of the outer flange portion 30 is used as a guide surface. Such an insertion operation is made as easy as possible. Further, the press-fit portion 36 is positioned in the tubular portion 38 in a state where the press-fit portion 36 is compressed to some extent by press-fitting the press-fit portion 36 of the main rubber elastic body 16 into the insertion hole 42 of the tubular portion 38. However, since the press-fitting operation is performed at room temperature, for example, unlike the case where a compression force is applied to the main rubber elastic body 16 in a high-temperature atmosphere, the press-fitting part 36 is compressed by the compression of the press-fitting part 36 and eventually the main rubber. There is no fear that the spring characteristics of the entire elastic body 16 become unstable.

  Thus, the stabilizer bush 12 is formed in a state where the stabilizer bar 10 is inserted and fixed in the inner hole 14 of the main rubber elastic body 16, that is, in a state where the stabilizer bar 10 is fixedly attached to the stabilizer bar 10. As shown in FIG. 1, two of the stabilizer bushes 12 are attached to the two insertion portions 21, 21 on both ends in the axial direction of the stabilizer bar 10, one by one, respectively. The target stabilizer bar with the stabilizer bush will be formed.

  Thus, in this embodiment, an adhesive layer is formed on either the inner peripheral surface of the inner hole 14 of the main rubber elastic body 16 of the stabilizer bush 12 or the outer peripheral surface of the insertion portion 21 of the stabilizer bar 10. Thus, the first of the two partition members 22, 22 embedded in the main rubber elastic body 16 with the insertion portion 21 of the stabilizer bar 10 inserted in the inner hole 14 of the main rubber elastic body 16. A fastening ring 31 made of an annular ring metal fitting having a simple structure and being inexpensive is externally fitted and fixed to the projecting portion 28a and the second projecting portion 28b, and then the adhesive The insertion portion 21 of the stabilizer bar 10 is strong against the inner peripheral surface of the inner hole 14 of the main rubber elastic body 16 while sufficiently securing the desired spring characteristics of the main rubber elastic body 16 only by performing the curing operation. Adhered and fixed to. Then, the integrated product 46 of the stabilizer bar 10 and the main rubber elastic body 16 is press-fitted into the insertion hole 42 of the cylindrical portion 38 of the bracket 18, so that excellent vibration isolation performance and sufficient durability can be obtained. A stabilizer bar with a stabilizer bush which is advantageously exhibited is formed.

  In the present embodiment, when the stabilizer bar 10 is bonded to the inner hole 14 of the main rubber elastic body 16, an inexpensive operation is performed to increase the bonding strength between the main rubber elastic body 16 and the stabilizer bar 10. Only the tightening ring 31 is used. For example, in the conventional method, no pressure jig or the like used for the same purpose as the tightening ring 31 is used. Here, although a caulking device for caulking the tightening ring 31 is used, it is conventionally used when a plurality of stabilizer bars with stabilizer bushes are obtained at a time by, for example, a batch method. The number of pressurizing jigs required is the same as the number of stabilizer bars with stabilizer bushes to be manufactured, whereas only one caulking device can be used for reuse. Therefore, the increase in cost due to the use of the caulking device can be suppressed very advantageously.

  In addition, in the present embodiment, the fastening ring 31 is fixed to the first and second projecting portions 28a and 28b. Therefore, unlike the conventional method using the pressurizing jig as described above, the main body A jig for pressing the inner peripheral surface of the inner hole 14 of the main rubber elastic body 16 to the outer peripheral surface of the insertion portion 21 of the stabilizer bar 10 after the stabilizer bar 10 is bonded and fixed in the inner hole 14 of the rubber elastic body 16. Thus, there is no need to perform an operation for removing the member and the member, and the number of steps can be effectively reduced by that amount. Thereby, simplification of the manufacturing operation of the stabilizer bar with the stabilizer bush can be advantageously realized.

  Therefore, according to the present embodiment as described above, a sufficient adhesive force between the main rubber elastic body 16 and the stabilizer bar 10 and desired spring characteristics in the main rubber elastic body 16 can be stably secured. Thus, a stabilizer bar with a stabilizer bush that can advantageously exhibit excellent vibration isolation performance and sufficient durability can be manufactured at a lower cost with sufficiently excellent workability.

  Further, in the present embodiment, the first and second protrusions 28a and 28b are tightened since the entire first and second protrusions 28a and 28b are covered with the thin rubber film 29. When the stabilizer bar 10 is approached based on the tightening force of the ring 31, the protrusions 28 a and 28 b and the stabilizer bar 10 are prevented from being brought into direct contact with each other. Due to the direct contact between the portions 28a and 28b and the stabilizer bar 10, it is possible to effectively prevent abnormal noise from being generated or the stabilizer bar 10 being damaged by the protrusions 28a and 28b. obtain.

  Furthermore, in the present embodiment, the thickness of the rubber film 29 covering the entire first and second protrusions 28a and 28b is made thinner than the thickness of the inner rubber portion 24 of the main rubber elastic body 16. When the inner rubber portion 24 is compressed and deformed based on the tightening force of the tightening ring 31, both end portions in the axial direction of the inner rubber portion 24 positioned inward in the axial direction from the rubber film 29 are formed. Even if the bulge is bulged so as to protrude outward in the axial direction, the bulged portion is also compressed between the protrusions 28a and 28b and the stabilizer bar 10. Therefore, the entire inner peripheral surface of the inner hole 14 of the main rubber elastic body 16 is more reliably brought into pressure contact with the outer peripheral surface of the stabilizer bar 10 at the protrusions 28a and 28b. The adhesive force between the elastic body 16 and the stabilizer bar 10 can be more sufficiently ensured.

  As mentioned above, although embodiment of this invention was explained in full detail, it is an illustration to the last, Comprising: This invention is not interpreted limitedly by the specific description in such embodiment.

  For example, in the above-described embodiment, the clamping ring 31 that is externally fitted to the first and second projecting portions 28a and 28b is caulked to cause the clamping ring 31 to be plastically deformed. As a method for fixing the fastening ring 31 to the first and second protrusions 28a and 28b, the first and second protrusions 28a and 28b are fixed. Any method may be adopted as long as the first and second protrusions 28a and 28b are fixed in a state of being tightened so that a radially inward tightening force can be applied. The Therefore, for example, a method of fastening and fixing the fastening ring 31 to the first and second protrusions 28a and 28b by various plastic workings such as known caulking and drawing other than the illustrated caulking, It can be adopted as appropriate.

  Further, as shown in FIG. 7, the distal end portions of the first and second projecting portions 28 a and 28 b are radially deformed by bending the distal end portions thereof radially outward. The engaging protrusions 48 may be integrally formed. In this case, the tightening ring 31 is externally fitted to a portion of each of the first and second protrusions 28a and 28b that is positioned inward in the axial direction with respect to the engagement protrusion 48, and is fixed by tightening. Is done.

  By adopting such a configuration, the fastening ring 31 is engaged with the engagement protrusion 48 in a state of being fixed to the first and second protrusions 28a and 28b, respectively. The fastening ring 31 can be prevented from slipping out from the first and second protrusions 28a, 28b outward in the axial direction. As a result, the axial direction of the fastening ring 31 from the first and second projecting portions 28a and 28b is maintained even when the stabilizer bar with the stabilizer bush is mounted on the automobile and used. So that the fastening rings 31 that have come out of the first and second projecting portions 28a and 28b can be prevented from coming out of the stabilizer bar 10 in the axial direction on both sides thereof and the periphery thereof. It is possible to prevent the partial members from being damaged by coming into contact with other members located in the front.

  Furthermore, the fastening members that are fastened and fixed to the first and second projecting portions 28a and 28b are not limited to the fastening ring 31 made of the illustrated annular ring fitting, The stabilizer bar 10 has a shape extending in the circumferential direction, and is radially inward with respect to each of the protrusions 28a and 28b in a state of being fitted on the first and second protrusions 28a and 28b. It is only necessary to have a structure that can be fixed in a tightened state so that each of the tightening forces can be applied. Therefore, instead of the illustrated tightening ring 31 as a tightening member, for example, a band member or a C-shaped metal or resin band member that can be deformed to have a form extending in the circumferential direction of the stabilizer bar 10. Etc. can also be used.

  In the case of using a resin band member, for example, various engagement mechanisms are provided that can engage and fix one end portion in the length direction to an arbitrary position in the intermediate portion in the length direction. A band member is used. The band member is externally fitted around the first and second protrusions 28a and 28b so as to be wound from the outside, and is tightened radially inward with respect to the protrusions 28a and 28b. In a state where the forces can be applied to each other, one end portion in the length direction is fixed by being engaged with an arbitrary position of the intermediate portion in the length direction by the engagement mechanism. .

  In the embodiment, the main rubber elastic body 16 having the stabilizer bar 10 bonded and fixed in the inner hole 14 is press-fitted into the insertion hole 42 of the cylindrical portion 38 of the bracket 18. The bracket 18 is fixed to the main rubber elastic body 16 in an externally inserted state, but the bracket 18 is bonded to the outer peripheral surface of the main rubber elastic body 16 with an adhesive or vulcanized. Even if it is fixed, there is no problem.

  Furthermore, if the main rubber elastic body 16 has a cylindrical shape, it does not necessarily have a cylindrical shape. Note that the shape of the insertion hole 42 of the cylindrical portion 38 of the bracket 18 into which the main rubber elastic body 16 is press-fitted can be appropriately changed according to the outer peripheral surface shape of the press-fit portion 36 of the main rubber elastic body 16. Moreover, the shape of the plurality of partition members 22 embedded in the main rubber elastic body 16 can be changed as appropriate in accordance with the shape of the main rubber elastic body 16, for example. However, you may be comprised by three or more division bodies.

  Furthermore, the main rubber elastic body 16 may have a split structure including a plurality of split cylinders having split surfaces extending in the axial direction.

  Further, when the main rubber elastic body 16 is constituted by one cylindrical body and the cut portion 20 is provided at one place on the circumference, and the groove portion 27 is provided on the opposite side in the radial direction, the groove portion 27 is provided. Includes a simple cut.

  Further, the material for forming the bracket 18 and the partition member 22 is not limited to the exemplified metal material as long as it has appropriate rigidity.

  In addition, in the said embodiment, although the specific example of what applied this invention to the manufacturing method of the stabilizer bar with a stabilizer bush for motor vehicles was shown, this invention is a manufacturing method of the stabilizer bar with a stabilizer bush other than for motor vehicles. Of course, it can be advantageously applied to any of the above.

  In addition, although not listed one by one, the present invention can be implemented in a mode with various changes, modifications, improvements, and the like based on the knowledge of those skilled in the art. It goes without saying that any one of them falls within the scope of the present invention without departing from the spirit of the invention.

It is front explanatory drawing which shows one Embodiment of the stabilizer bar with a stabilizer bush manufactured according to this invention technique. It is II-II cross-section expansion explanatory drawing in FIG. FIG. 3 is an explanatory view taken along the line III-III in FIG. 2. It is explanatory drawing which shows the example of 1 process implemented when manufacturing the stabilizer bar with a stabilizer bush shown by FIG. 1 according to this invention method, Comprising: A stabilizer bar is inserted in the inner hole of the main body rubber elastic body of a stabilizer bush. The state to be inserted is shown. It is explanatory drawing which shows the example of a process implemented following the process shown by FIG. 4, Comprising: A fastening ring is externally fitted with respect to the 1st protrusion part and the 2nd protrusion part of each partition member. , Shows a state of being fastened and fixed. It is explanatory drawing which shows the example of a process implemented following the process shown by FIG. 5, Comprising: The main body rubber elastic body to which the stabilizer bar was adhere | attached and fixed in the inner hole in the insertion state was inserted in the insertion hole of the cylindrical part of a bracket. The state when press-fitting into is shown. It is a figure corresponding to FIG. 3 which shows another embodiment of the stabilizer bar with a stabilizer bush manufactured according to this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Stabilizer bar 12 Stabilizer bush 14 Inner hole 16 Main body rubber elastic body 18 Bracket 21 Insertion part 22 Partition member 24 Inner rubber part 26 Outer rubber part 29 Rubber film 31 Tightening ring 36 Press-fit part 38 Cylindrical part 42 Insertion hole 46 Integral product 48 engagement protrusion

Claims (5)

A cylindrical rubber elastic body having an inner hole extending in the axial direction, a bracket fixed in an externally inserted state to the cylindrical rubber elastic body, and attached to the vehicle body, and a direction perpendicular to the axis of the cylindrical rubber elastic body A split cylindrical body having a split surface extending in the axial direction embedded in an intermediate portion so as to divide the cylindrical rubber elastic body into an inner peripheral portion and an outer peripheral portion with respect to the intermediate portion in the direction perpendicular to the axis. A stabilizer bush having a plurality of partition members having a shape is used, and the stabilizer bar is adhesively fixed in a state where the stabilizer bar is inserted into the inner hole of the cylindrical rubber elastic body in the stabilizer bush. A method of manufacturing a stabilizer bar with a stabilizer bush, wherein the stabilizer bush is fixedly attached to the stabilizer bar.
A plurality of the partition members are positioned such that the divided surfaces are spaced apart from each other in the direction perpendicular to the axis, and one end in the axial direction of each partition member corresponds to the cylindrical rubber elastic body. The first projecting portion is formed by projecting from the end surface of one end portion in the axial direction, and the other end portion in the axial direction of each partition member corresponds to the shaft of the cylindrical rubber elastic body. A step of preparing the stabilizer bush having a structure that is protruded from an end surface of an end portion on the other side in the direction to form a second protrusion;
Adhering to at least one of the inner peripheral surface of the inner hole of the cylindrical rubber elastic body and the outer peripheral surface of the insertion portion of the stabilizer bar to be inserted into the inner hole of the cylindrical rubber elastic body After forming the agent layer, the step of inserting the insertion portion of the stabilizer bar into the inner hole of the cylindrical rubber elastic body,
A step of externally fitting a fastening member having a form extending in a circumferential direction of the stabilizer bar to the first projecting portion and the second projecting portion of the plurality of partition members;
The fastening members respectively fitted on the first protrusion and the second protrusion are tightened inward in the direction perpendicular to the axis with respect to the first protrusion and the second protrusion. In addition to fixing in a state of being tightened so that each of the applied forces can be applied, the inner peripheral surface of the inner hole of the cylindrical rubber elastic body is fixed to the insertion portion of the stabilizer bar based on the tightening force of the tightening member. A process of pressing and bonding the outer peripheral surface;
The manufacturing method of the stabilizer bar with a stabilizer bush characterized by including these.   The partition member has a divided cylindrical body shape, and the fastening member is formed of an annular ring metal fitting, and the fastening member made of the ring metal fitting includes the first protrusion and the second protrusion. In the direction perpendicular to the axis with respect to the first protrusion and the second protrusion by being plastically deformed by a diameter reducing process or a caulking process in a state of being externally fitted to each part. The method for manufacturing a stabilizer bar with a stabilizer bush according to claim 1, wherein the stabilizer bar is fixed while acting with a tightening force.   Engaging protrusions that protrude outward in the direction perpendicular to the axis are integrally provided at the respective distal ends of the first protrusion and the second protrusion in the partition member, and the fastening member is By being engaged with the engaging protrusions in a state of being fixed to each of the first protruding part and the second protruding part, the first protruding part and the second protruding part are separated from each other. The method of manufacturing a stabilizer bar with a stabilizer bush according to claim 1 or 2, wherein the tightening member is prevented from slipping outward in the axial direction.   A rubber film that covers the entire inner peripheral surface of each of the first protrusion and the second protrusion of the partition member is provided integrally with the cylindrical rubber elastic body. The manufacturing method of the stabilizer bar with a stabilizer bush of any one of Claim 1 thru | or 3. The manufacturing method of the stabilizer bar with a stabilizer bush of Claim 4 with which the said rubber film has thickness thinner than the thickness of the part of the inner peripheral side rather than the said partition member of the said cylindrical rubber elastic body.

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