JP3907059B2 - Manufacturing method of stabilizer bar with rubber bush - Google Patents

Description

  The present invention includes a cylindrical rubber bush having a U-shaped outer peripheral surface and a linear flat surface continuous to both ends of the U-shaped outer peripheral surface, and flanges formed respectively at both end portions in the axial direction. The present invention relates to a method for manufacturing a stabilizer bar with a rubber bush that is externally fixed to a fitted portion of a stabilizer bar.

  Conventionally, this type of stabilizer bar with a rubber bush has a structure in which the stabilizer bar is simply inserted into the rubber bush. Then, the rubber bush is pressed and fixed to the vehicle body side with a clamp having a U-shaped rubber bush receiver, and the flat surface of the rubber bush is pressed against the mounting surface of the vehicle body.

  However, according to the above structure, since the stabilizer bar was simply inserted through the rubber bush, when water entered between the rubber bush and the stabilizer bar or when the air temperature became very low The rubber bush slips with respect to the stabilizer bar, and there is a problem that abnormal noise is generated.

In order to solve this problem, as disclosed in the first technique of vulcanizing and bonding a rubber bush to a stabilizer bar, or as disclosed in Patent Document 1, the rubber bush formed by vulcanization is bonded to a stabilizer bar at room temperature with an adhesive. There is a second technique to stick. In both technologies, the rubber bushing is externally fixed to the stabilizer bar to suppress the slippage between the two to prevent the generation of abnormal noise.
JP 11-108096 A

  According to said 1st technique, although generation | occurrence | production of abnormal noise can be prevented, since the stabilizer bar is long, the production equipment of vulcanization adhesion becomes large, equipment cost increases, and productivity is increased. Is difficult and the production cost is high. In the second technique, the adhesive force of the adhesive is reduced in a high temperature atmosphere, and the inner peripheral surface of the rubber bush may be separated from the outer peripheral surface of the stabilizer bar.

  An object of the present invention is to provide a method capable of manufacturing a stabilizer bar with a rubber bush that has a structure capable of preventing abnormal noise, can reduce the manufacturing cost, and can firmly fix the rubber bush to the stabilizer bar and has excellent durability. There is in point to do.

The feature of the present invention is that
A cylindrical rubber bush having a U-shaped outer peripheral surface and a linear flat surface continuous to both ends of the U-shaped outer peripheral surface and having flanges formed at both end portions in the axial direction. A method of manufacturing a stabilizer bar with a rubber bush that is externally fitted and fixed to a mated portion of
Applying a thermosetting adhesive to the fitted portion of the stabilizer bar and / or the inner peripheral surface of the vulcanized rubber bush, and then externally fitting the rubber bush to the fitted portion, The first fitting recess of the first pressing tool is externally fitted to the projecting curved surface of the U-shaped outer peripheral surface, and the first flat surface and the linear surface of the U-shaped outer peripheral surface are first fitted. The second fitting recess of the two pressing tool is externally fitted, the rubber bush is compressed with the first pressing tool and the second pressing tool to compress the rubber bush, and the first fitting recess and the second fitting are compressed. The rubber bush is heated in a state where almost the entire surface of the rubber bush is covered with the joint recess, the first pressing tool and the second pressing tool are removed, and a stabilizer bar with a rubber bush is obtained,
As means for covering substantially the entire surface of the rubber bush with the first fitting recess and the second fitting recess, flanges formed at both ends in the axial direction of the rubber bush are used as the first fitting recess. One end wall in the axial direction of the rubber bush, and one first side wall of the pair of first side walls formed in the first pressing tool. The second pressing member is covered with one second side wall of the pair of second side walls, and the other end surface of the rubber bush in the axial direction is the other first side of the pair of first side walls. It exists in the point covered with a side wall and the other 2nd side wall of a pair of said 2nd side walls.

  According to this means, the rubber bush is heated with the rubber bush compressed by pressing the rubber bush with the first pressing tool and the second pressing tool, so that the thermosetting adhesive is cured and the rubber bush becomes Firmly adheres to the stabilizer bar. Since the adhesive is thermosetting, the adhesive strength does not decrease in a high temperature atmosphere. As a result, the rubber bush does not slip with respect to the stabilizer bar, and the generation of abnormal noise can be prevented. Also, since the rubber bushing is vulcanized separately from the stabilizer bar, the production equipment for vulcanization molding does not increase in size, increasing productivity and reducing manufacturing costs. can do. Further, the first fitting recess of the first pressing tool is externally fitted to the projecting curved surface of the U-shaped outer peripheral surface, and the flat surface and the linear surface of the U-shaped outer peripheral surface The second pressing recess of the second pressing tool is externally fitted and the rubber bush is clamped by the first pressing tool and the second pressing tool, so that a desired compressive force can be transmitted to the rubber bush.

  The rubber bush is compressed by sandwiching the rubber bush with the first pressing tool and the second pressing tool, and the rubber bush is heated with the first fitting recess and the second fitting recess covering almost the entire surface of the rubber bush. By doing so, when the rubber bush is clamped by the first pressing tool and the second pressing tool, a desired compressive force can be more reliably transmitted to the rubber bush. As a means for covering substantially the entire surface of the rubber bush with the first fitting recess and the second fitting recess, flanges formed at both ends in the axial direction of the rubber bush are used as the first fitting recess. And one end wall in the axial direction of the rubber bush, one of the pair of first side walls formed in the first pressing tool, Cover the other end surface of the rubber bush in the axial direction with the other first side wall of the pair of first side walls and the pair of second side walls. Since it covers with the other 2nd side wall among the 2nd side walls, there can exist the effect | action of (a)-(d) of following (A1).

(A1) For example, when the rubber bush is clamped by the first pressing tool and the second pressing tool in a state where both the flanges of the rubber bushing and the axial end surfaces of the rubber bushing are exposed, the flanges are positioned radially inward The inner peripheral surface portion of the rubber bush tends to float from the outer peripheral surface of the fitted portion of the stabilizer bar. Therefore, it is difficult to strongly adhere the inner peripheral surface portion and the outer peripheral surface, and the adhesive force between the inner peripheral surface portion and the outer peripheral surface becomes weak. On the other hand, according to the present invention, by configuring as described above,
(A) A clamping pressure can be applied to both flanges on both ends in the axial direction of the rubber bush from the flange receiver of the first pressing tool and the flange receiver of the second pressing tool.
(B) During clamping, the pair of first pressing tools is such that the inner peripheral surface portion of the rubber bush located on the radially inner side of both flanges is lifted from the outer peripheral surface of the fitted portion of the stabilizer bar. The first side wall and the pair of second side walls of the second pressing tool can be blocked.
(C) According to the above (a) and (b), the inner peripheral surface portion and the outer peripheral surface can be strongly adhered. As a result, the adhesive force between the inner peripheral surface portion and the outer peripheral surface can be increased, and the rubber bush can be bonded more strongly to the stabilizer bar.
(D) The rubber bush can be prevented from extending in the axial direction by the clamping pressure between the pair of first side walls of the first pressing tool and the pair of second side walls of the second pressing tool. It is easy to form in a desired shape.

  In the present invention, an outer peripheral surface of the stabilizer bar is coated before the step of applying the thermosetting adhesive, and the thermosetting adhesive is applied to the coating film surface of the fitted portion. can do. According to this means, since the thermosetting adhesive is applied to the coating film surface of the fitting portion of the stabilizer bar, the coating film surface of the fitting portion does not need to be peeled off for the application of the adhesive. .

  In the present invention, the projecting portion of the rubber bush, the outer peripheral surface of which is formed of the projecting curved surface and located between both flanges of the rubber bush, is expanded by a set amount radially outward from the target product dimension. When the rubber bush is vulcanized and molded so that it comes out, the following action (A2) can be achieved.

  (A2) When the rubber bush is pinched and heated with the first pressing tool and the second pressing tool and the sag due to heat occurs in the projecting portion, the first pressing tool and the second pressing tool against the rubber bush. There is a possibility that the adhesive force between the rubber bush and the stabilizer bar may be weakened due to weak clamping pressure. When the rubber bush is pressed and fixed to the vehicle body with a clamp after the product is completed, it becomes difficult to press the flat surface of the rubber bush against the mounting surface of the vehicle with a desired force, and the fixed state with respect to the vehicle is unstable. become. On the other hand, according to the above-described configuration of the present invention, the curved portion of the rubber bush bulges a set amount outward in the radial direction from the target product dimension. The compressing force can be reliably transmitted to the rubber bush by the tool, and the problem that the adhesive force between the rubber bush and the stabilizer bar becomes weak can be avoided. And even if a sag caused by heat occurs in the bent part, the bent part can be easily formed according to the product dimensions. As a result, when the rubber bush is pressed and fixed to the vehicle body side by a clamp after the product is completed, the flat surface of the rubber bush can be pressed against the mounting surface of the vehicle body with a desired force, and the fixed state with respect to the vehicle body can be stabilized. Since the size of the rubber bush in the width direction (direction intersecting with the pair of linear surfaces of the U-shaped outer peripheral surface) is not in the bulged state as described above, The rubber bush can be smoothly fitted into the first fitting recess and the second fitting recess of the second pressing tool, and a problem that the fitting cannot be performed can be avoided.

  In the present invention, the outer peripheral surface is formed of the projecting curved surface, and the projecting portion of the rubber bush positioned between both flanges of the rubber bush is divided into a plurality of projecting portions in the circumferential direction, and the center in the circumferential direction. When the rubber bush is vulcanized and molded so that the bent portion located at the position swells by a set amount radially outward from the target product dimension, the same effect as the above (A2) is obtained. be able to.

  In the present invention, the outer peripheral surface is formed of the projecting curved surface, and the projecting portion of the rubber bush positioned between both flanges of the rubber bush is divided into a plurality of projecting portions in the circumferential direction, and the center in the circumferential direction. When the rubber bush is vulcanized and molded so that each of the bent portions other than the bent portion located at a position swells by a set amount outward in the radial direction from the target product dimensions, the above (A2) The same operation as (1) can be achieved, and the following operation (B) can be achieved.

  (B) When the rubber bush is clamped by the first pressing tool and the second pressing tool, the clamping pressure in the direction inclined with respect to the clamping direction (direction in which each protruding portion swells) is increased. It is easy to equalize the adhesive force between the rubber bush and the stabilizer bar in the circumferential direction, and the adhesiveness between the two can be improved.

  In the present invention, a metal or resin-made insert material is embedded in a rubber bush portion on the opposite side of the projecting portion across the hollow hole of the rubber bush, and the surface of the insert material facing the hollow hole side is When the rubber bush is vulcanized so as to have an arcuate curved surface along the circumferential direction of the hollow hole, the same effect as the above (A2) can be obtained, and the following effect (C) can be obtained. be able to.

  (C) When the rubber bush is clamped by the first pressing tool and the second pressing tool, the first pressing tool and the insert material compress the rubber bush portion therebetween. In this case, both ends of the arcuate curved surface in the circumferential direction receive the rubber bush portion, and the rubber bush portion is prevented from bulging outward in the width direction of the rubber bush. Thereby, it can suppress that the compression force added to a rubber bush part escapes. And since the surface of the insert material facing the hollow hole is an arcuate curved surface along the circumferential direction of the hollow hole, the clamping force by the first pressing tool and the second pressing tool is perpendicular to the curved surface. To the rubber bush part As a result, the pressure contact force between the rubber bush and the stabilizer bar can be easily uniformed in the circumferential direction of both, and the adhesive force of both can be easily uniformed in the circumferential direction of both to improve the adhesion between them. Can do. Moreover, when the rubber bush is pressed and fixed to the vehicle body side with a clamp having a U-shaped rubber bush receiver, and the flat surface of the rubber bush is pressed against the mounting surface of the vehicle body, the clamp and the insert material are Compress the rubber bush part between. In this case, both ends of the arcuate curved surface in the circumferential direction receive the rubber bush portion, and the rubber bush portion is prevented from bulging outward in the width direction of the rubber bush. Thereby, it is possible to suppress the escape of the compressive force applied to the rubber bush portion, the rubber bush can be pressed against the mounting surface of the vehicle body with a desired force, and the fixed state with respect to the vehicle body can be stabilized.

  In the present invention, when the rubber bush is vulcanized and molded so that the surface of the insert material facing away from the hollow hole is exposed, the surface of the insert material is directly pressed against the mounting surface of the vehicle body. Is suppressed, the rubber bushing can be easily pressed against the mounting surface of the vehicle body with a desired force, and the fixed state with respect to the vehicle body can be stabilized.

  In the present invention, when the rubber bush is vulcanized so that the length of the insert material along the width direction of the rubber bush is longer than the diameter of the hollow hole, both ends in the circumferential direction of the arcuate curved surface The portion can easily receive the rubber bush portion, and the rubber bush portion can be more easily prevented from bulging outward in the width direction of the rubber bush.

  According to the present invention, there is provided a method capable of manufacturing a stabilizer bar with a rubber bush that has a structure capable of preventing abnormal noise, can reduce the manufacturing cost, and can firmly fix the rubber bush to the stabilizer bar and has excellent durability. We were able to.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a stabilizer bar with a rubber bush attached to a suspension of an automobile and a member on the vehicle body side. This stabilizer bar with rubber bush is composed of a metal bar-like stabilizer bar 1 whose surface is coated, and a rubber bush 3 which is externally fitted and fixed to the fitted portion 2 of the stabilizer bar 1.

  The rubber bush 3 is formed in a cylindrical shape having a U-shaped outer peripheral surface 4 and a linear flat surface 5 continuous to both ends of the U-shaped outer peripheral surface 4. The flanges 6 are formed on both ends of the U-shaped outer circumferential surface 4 over the entire circumference. The rubber bush 3 is formed with a cutting portion 7 for mounting along the radial direction and the axial direction.

  The rubber bush 3 is pressed and fixed to the vehicle body side by a clamp 8 so that the flat surface 5 of the rubber bush 3 is pressed against the mounting surface of the vehicle body. The clamp 8 includes a U-shaped rubber bush receiver 9 for slightly fitting the U-shaped outer peripheral surface portion between both flanges 6 of the rubber bush 3 and the laterally outer side from both open ends of the rubber bush receiver 9. And an attachment piece 10 that projects over the surface. A bolt insertion hole 11 is formed in the mounting piece 10.

The manufacturing method of the stabilizer bar with the rubber bush is as follows. That is,
The outer peripheral surface 1C of the stabilizer bar 1 is coated by cationic electrodeposition coating or powder coating. Thereafter, a thermosetting epoxy adhesive (an example of a thermosetting adhesive) is applied to the coating film surface of the fitted portion 2 of the stabilizer bar 1. Thus, the outer peripheral surface 1C of the stabilizer bar 1 is painted before the step of applying the thermosetting epoxy adhesive. Then, the cut portion 7 of the vulcanized rubber bush 3 is opened, and the rubber bush 3 is externally fitted to the fitted portion 2. Next, as shown in FIG. 6, the first fitting recess 14 of the first pressing tool 13 is externally fitted to the protruding surface 12 of the U-shaped outer peripheral surface 4, and the flat surface 5 and the U-shape The second fitting recess 17 of the second pressing tool 16 is externally fitted to the linear surface 15 of the outer peripheral surface 4. Then, as shown in FIG. 7, the rubber bush 3 is heated by pressing the rubber bush 3 with the first pressing tool 13 and the second pressing tool 16 to compress the rubber bush 3 by 5% to 10%. The tool 13 and the second pressing tool 16 are removed to obtain a stabilizer bar with a rubber bush. The heating temperature for the rubber bush 3 is 120 ° C. to 200 ° C., and the heating time is 15 minutes to 60 minutes.

  More specifically, as shown in FIGS. 8A and 8B, the first projecting portion 37 of the rubber bush 3 whose outer peripheral surface is composed of the projecting curved surface 12 and located between the flanges 6. However, the rubber bush 3 is vulcanized and molded so as to bulge a set amount outward in the radial direction from the target product dimension (projected portion). In FIG. 8B, the alternate long and short dash line A represents the projecting curved surface of the first projecting portion 37 of the product size. The projecting curved surface 12 before heating is a gentle arc-shaped curved surface corresponding to the projecting curved surface A of the first projecting portion 37 having a product size. Since the rubber bush 3 thus vulcanized and molded is heated with the first pressing tool 13 and the second pressing tool 16 being pressed, the first projecting portion 37 is sag (shrinkage) due to heat. Also, it becomes easy to form the first bent portion 37 according to the product dimensions. That is, the set amount is an amount that takes into account the sag of the first bent portion 37, and is an amount that contracts due to the sag. The center of the hollow hole 38 of the rubber bush 3 is located slightly on the corner block portion 26 side from the boundary between the first bent portion 37 and the corner block portion 26 described later.

  As shown in FIGS. 2, 3, and 4, the first pressing tool 13 has a U-shaped cross section that accommodates the first bent portion 37 and the second bent portion 50 (see FIG. 8) of the rubber bush 3. The first accommodating portion 18 and a pair of first mounting plates 19 projecting laterally outward from both open ends of the first accommodating portion 18. The second bent portion 50 includes a pair of rubber bush portions whose outer peripheral surfaces are formed by the projecting curved surface 12 of both the flanges 6 of the rubber bush 3 and the rubber bush portions on the radially inner side of both flanges 6. (That is, a pair of rubber bush portions on both sides of the first bent portion 37). The first fitting recess 14 is formed in the first accommodating portion 18.

  The first fitting recess 14 is externally fitted to the first bent portion 37 and the second bent portion 50. A pair of flange receivers 20 are formed in the first fitting recess 14 to separately accommodate the flange portions of the rubber bush 3 on the second projecting portion 50 side. A pair of through-holes 21 are formed in the first mounting plate 19, and rubber bushes including a first projecting portion 37 and a second projecting portion 50 at both axial ends of the first pressing tool 13. A pair of first side walls 23A, 23B are formed separately to cover both end surfaces 22A, 22B in the axial direction of the portion, and a semicircular recess 25 for receiving the stabilizer bar 1 is formed in each first side wall 23A, 23B. .

  As shown in FIGS. 2, 3, and 5, the second pressing tool 16 includes a second housing portion 28 having a U-shaped cross section for housing the corner block portion 26 of the rubber bush 3, and the second housing portion 28. It consists of a pair of second mounting plates 29 projecting laterally outward from both open ends. The corner block portion 26 is a rubber bush portion whose outer peripheral surface is composed of the flat surface 5 and the straight surface 15 (including the straight surfaces of both flanges 6) of the U-shaped outer peripheral surface 4. Yes (see FIG. 8). The second fitting recess 17 is formed in the second housing portion 28.

  The second fitting recess 17 is fitted on the corner block portion 26. A pair of flange receivers 20 are formed in the second fitting recess 17 to separately accommodate the flange portions on the corner block portion 26 side of the rubber bush 3. In addition, a pair of pins 30 that respectively enter the pair of through holes 21 of the first mounting plate 19 protrude from the second mounting plate 29. Then, a pair of second side walls 32A, 32B that covers both end surfaces 31A, 31B in the axial direction of the corner block portion 26 are formed separately at both end portions in the axial direction of the second pressing tool 16, and each second side wall 32A, A semicircular recess 33 for receiving the stabilizer bar 1 is formed in 32B.

  As shown in FIG. 8, rubber is formed by one axial end surface 22A of the rubber bush portion including the first curved portion 37 and the second curved portion 50, and one axial end surface 31A of the corner block portion 26. One end face 55 of the bush 3 is formed. The other end surface of the rubber bushing 3 is composed of the other end surface 22B in the axial direction of the rubber bush portion composed of the first and second bent portions 37 and 50 and the other end surface 31B in the axial direction of the corner block portion 26. 56 is configured.

  As shown in FIG. 7, the pair of pins 30 of the second pressing tool 16 are passed through the pair of first pressing tools 13 in a state where the rubber bush 3 is clamped by the first pressing tool 13 and the second pressing tool 16. It enters into each hole 21 separately. Then, almost the entire surface of the rubber bush 3 is covered with the first fitting recess 14 and the second fitting recess 17. The following means is adopted as means for covering the substantially entire surface of the rubber bush 3 with the first fitting recess 14 and the second fitting recess 17. That is, the flanges 6 formed at both ends in the axial direction Z of the rubber bush 3 are accommodated in the flange receivers 20 formed in pairs on the first fitting recess 14 and the second fitting recess 17, and the shaft of the rubber bush 3 One end wall 55 in the direction is formed on the first pressing member 13 and the first pressing member 13 is formed on the first pressing member 13 and the second pressing member 16 is formed on the second pressing member 16. One of the two side walls 32A and 32B is covered with one second side wall 32A, and the other end surface 56 in the axial direction of the rubber bush 3 is paired with the other first side wall 23B of the pair of first side walls 23A and 23B. The second side wall 32B is covered with the other second side wall 32B.

[Another embodiment]
(1) As shown in FIGS. 9 (a) and 9 (b), a plurality of (three in this embodiment) first bent portions 37A of the rubber bush 3 are provided in the circumferential direction. The rubber bush 3 is vulcanized so that the projecting portion 37B, which is divided into 37B and 37C and is located in the center in the circumferential direction, bulges a set amount radially outward from the target product dimension. You may shape | mold.

  (2) As shown in FIGS. 10 (a) and 10 (b), a plurality of (three in this embodiment) first bent portions 37A of the rubber bush 3 are provided in the circumferential direction. 37B and 37C, and each of the bent portions 37A and 37C other than the bent portion 37B located at the center in the circumferential direction is in a state where a set amount is bulged outwardly in the radial direction from the target product dimension. The rubber bush 3 may be vulcanized and molded as described above.

  (3) In the first embodiment of the rubber bush shown in FIGS. 8 (a) and 8 (b), as shown in FIGS. 11 (a) and 11 (b), the hollow hole 38 of the rubber bush 3 is formed. An insert material 40 made of metal or resin is embedded in a rubber bush portion 39 (a part of the corner block portion 26) opposite to the first projecting portion 37, and the insert material 40 faces the hollow hole 38 side. The rubber bush 3 may be vulcanized so that the first surface 41 is an arcuate curved surface along the circumferential direction of the hollow hole 38. The second surface 42 of the insert 40 facing away from the hollow hole 38 protrudes from the rubber bush portion 39 and is exposed.

  The length C of the insert member 40 in the direction along the width direction of the rubber bush 3 is set to be longer than the diameter of the hollow hole 38, and the length D of the insert member 40 in the axial direction Z of the rubber bush 3 is the rubber bush 3. The length between the first flange 13 and the first peripheral surface 51 of the hollow hole 38 is set to be approximately the same as the length between the two flanges 6. The length between the projecting curved surface 12 of the first projecting portion 37 of the rubber bush 3 and the inner peripheral surface 51 of the hollow hole 38 before being attached to is set substantially the same.

  (4) As shown in FIG. 12 (a) and FIG. 12 (b), only the central portion of the first projecting portion 37 in the axial direction Z of the rubber bush 3 is radially outside the target product dimension. The rubber bush 3 may be vulcanized and molded so as to bulge by a set amount on the side.

  (5) The structure of (3) above (the structure in which the insert material 40 is embedded) is shown in the embodiment shown in FIGS. 9 (a) and 9 (b) and in FIGS. 10 (a) and 10 (b). You may employ | adopt by embodiment shown in Fig.12 (a) and FIG.12 (b).

  (6) The numerical values given in the above embodiment are merely examples, and may be different numerical values. For example, the protruding portion 37 of the rubber bush 3 may be divided into four or more in the circumferential direction.

  (7) In the above embodiment, the outer peripheral surface 1C of the stabilizer bar 1 is applied before the step of applying the thermosetting adhesive, but the outer periphery of the stabilizer bar 1 before the step of applying the thermosetting adhesive. The surface 1C may not be painted. That is, you may apply a thermosetting epoxy adhesive to the to-be-fitted part 2 of the stabilizer bar 1 which is not painted.

  (8) A thermosetting adhesive is applied to both the fitted portion 2 of the stabilizer bar 1 and the inner peripheral surface 51 of the vulcanized rubber bush 3 (the inner peripheral surface 51 of the hollow hole 38). May be. Moreover, you may make it apply | coat a thermosetting adhesive only to the inner peripheral surface 51 side of the rubber bush 3, without apply | coating a thermosetting adhesive to the to-be-fitted part 2. FIG.

Perspective view of stabilizer bar and clamp with rubber bush Front view of first pressing tool and second pressing tool Side view of first pressing tool and second pressing tool Top view of the first pressing tool Bottom view of the second pressing tool The figure which shows the state which fits a rubber bush to a 1st press tool and a 2nd press tool. The figure which shows the state which clamped the rubber bush with the 1st press tool and the 2nd press tool. (A) is a side view of the rubber bush, (b) is a front view of the rubber bush. (A) is a side view of the rubber bush of the second embodiment, (b) is a front view of the rubber bush of the second embodiment. (A) is a side view of the rubber bush of the third embodiment, (b) is a front view of the rubber bush of the third embodiment. (A) is a side view of the rubber bush of the fourth embodiment, (b) is a front view of the rubber bush of the fourth embodiment. (A) is a side view of the rubber bush of the fifth embodiment, (b) is a front view of the rubber bush of the fifth embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Stabilizer bar, 1C ... Stabilizer bar outer peripheral surface, 2 ... Fit part, 3 ... Rubber bush, 4 ... U-shaped outer peripheral surface, 5 ... Flat surface, 6 ... Flange, 12... Projected curved surface of U-shaped outer peripheral surface, 13... First pressing tool, 14... First fitting recess, 15. …… Second pressing tool, 17 …… Second fitting recess, 20 …… Flange receiver, 55 …… One end surface in the axial direction of the rubber bush, 56 …… Other end surface in the axial direction of the rubber bush, 23A …… First 1 side wall (one first side wall), 23B... First side wall (other first side wall), 32A... Second side wall (one second side wall), 32B. ), 37... Bent portion, 37A, 37B, 37C... Bent portion, 38... Hollow hole, 39. Insert material 41... Surface of the insert material facing the hollow hole side (first surface of the insert material) 42... Surface of the insert material facing the opposite side of the hollow hole (second surface of the insert material) 51. ... Inner circumferential surface of rubber bush, C ... Length of insert material along the width direction of rubber bush, Z ... Axial direction of rubber bush

Claims (8)

A cylindrical rubber bush having a U-shaped outer peripheral surface and a linear flat surface continuous to both ends of the U-shaped outer peripheral surface and having flanges formed at both end portions in the axial direction. A method of manufacturing a stabilizer bar with a rubber bush that is externally fitted and fixed to a mated portion of
Applying a thermosetting adhesive to the fitted portion of the stabilizer bar and / or the inner peripheral surface of the vulcanized rubber bush, and then externally fitting the rubber bush to the fitted portion, The first fitting recess of the first pressing tool is externally fitted to the projecting curved surface of the U-shaped outer peripheral surface, and the first flat surface and the linear surface of the U-shaped outer peripheral surface are first fitted. The second fitting recess of the two pressing tool is externally fitted, the rubber bush is compressed with the first pressing tool and the second pressing tool to compress the rubber bush, and the first fitting recess and the second fitting are compressed. The rubber bush is heated in a state where almost the entire surface of the rubber bush is covered with the joint recess, the first pressing tool and the second pressing tool are removed, and a stabilizer bar with a rubber bush is obtained,
As means for covering substantially the entire surface of the rubber bush with the first fitting recess and the second fitting recess, flanges formed at both ends in the axial direction of the rubber bush are used as the first fitting recess. One end wall in the axial direction of the rubber bush, and one first side wall of the pair of first side walls formed in the first pressing tool. The second pressing member is covered with one second side wall of the pair of second side walls, and the other end surface of the rubber bush in the axial direction is the other first side of the pair of first side walls. The manufacturing method of the stabilizer bar with a rubber bush covered with a side wall and the other 2nd side wall of a pair of said 2nd side walls.   The rubber according to claim 1, wherein an outer peripheral surface of the stabilizer bar is applied before the step of applying the thermosetting adhesive, and the thermosetting adhesive is applied to the coating film surface of the fitting portion. Manufacturing method of stabilizer bar with bush.   The outer peripheral surface is formed of the projecting curved surface, and the projecting portion of the rubber bush located between both flanges of the rubber bush is in a state where the set amount bulges radially outward from the target product dimension. The method for producing a stabilizer bar with a rubber bush according to claim 1 or 2, wherein the rubber bush is vulcanized and molded.   The outer peripheral surface is formed of the projecting curved surface, and the projecting portion of the rubber bush located between both flanges of the rubber bush is divided into a plurality of projecting portions in the circumferential direction, and the projecting centered in the circumferential direction. The method of manufacturing a stabilizer bar with a rubber bush according to claim 1 or 2, wherein the rubber bush is vulcanized and molded so that a curved portion is in a state of bulging a set amount outward in a radial direction from a target product dimension. .   The outer peripheral surface is formed of the projecting curved surface, and the projecting portion of the rubber bush located between both flanges of the rubber bush is divided into a plurality of projecting portions in the circumferential direction, and the projecting centered in the circumferential direction. The rubber bush according to claim 1 or 2, wherein the rubber bush is vulcanized and molded so that each projecting portion other than the curved portion bulges by a set amount radially outward from the target product dimension. Of manufacturing a stabilizer bar.   A metal or resin-made insert material is embedded in a rubber bush portion on the opposite side of the projecting portion across the hollow hole of the rubber bush, and the surface of the insert material facing the hollow hole side is the hollow hole. The manufacturing method of the stabilizer bar with a rubber bush as described in any one of Claim 3, 4, 5 which vulcanizes-molds the said rubber bush so that it may become the circular-arc-shaped curved surface along the circumferential direction.   The method of manufacturing a stabilizer bar with a rubber bush according to claim 6, wherein the rubber bush is vulcanized and molded so that a surface of the insert material facing away from the hollow hole is exposed.   The method of manufacturing a stabilizer bar with a rubber bush according to claim 6 or 7, wherein the rubber bush is vulcanized and molded so that the length of the insert material along the width direction of the rubber bush is longer than the diameter of the hollow hole. .

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