JP2013028293A - Bush for mounting stabilizer bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bush for mounting a stabilizer bar, the bush combining suppression of generation of abnormal sound with improvement of assemblability.SOLUTION: A bush 101 made of an elastic material includes a through-hole 110 and a pressurizing plate 130, in which the through-hole is provided with an incision 120 and a stabilizer bar 210 is mounted on the through-hole via the incision. A chamfered part 140 is formed in the contact point between an inner circumferential face of the through-hole and the incision, and the length of the chamfered part in a diameter- direction of the through-hole is set to be smaller than a collapsing amount of the bush. Thereby, improvement of assembability of a stabilizer bar in the bush can be combined with suppression of generation of abnormal sounds.

Description

  The present invention relates to a stabilizer bar mounting bush used for mounting a stabilizer bar of a vehicle to a vehicle body.

  For example, as shown in FIG. 9, a stabilizer is known in which suspension devices for both wheels in a vehicle such as an automobile are connected by a substantially U-shaped stabilizer bar 1 in a plan view. Such a stabilizer uses the torsion of the stabilizer bar 1 to suppress the roll angle of the vehicle and improve the operation stability of the vehicle. The stabilizer bar 1 is attached to the lower part of the vehicle body at the middle portion thereof, but needs to be twisted as described above. Therefore, the stabilizer bar 1 is inserted into a bush 2 formed of an elastic member such as a rubber material. The attachment to the vehicle body is performed by attaching to the lower part of the vehicle body at 3.

  Examples of the method for supporting the stabilizer bar 1 by the bush 2 include a pressure bonding method and an adhesion method. In the pressure bonding method, the bush 2 is covered with the bracket 3 and the bush 2 is tightened, and the bush 2 presses and holds the stabilizer bar 1 with this tightening force. In the bonding method, the stabilizer bar 1 and the bush 2 are bonded and supported.

  The bush 2 is simply made of only an elastic member, or has a metal plate 4 embedded as shown in FIG. 10 to increase the tightening force (for example, Patent Documents 1 to 3). There is a form. Therefore, the method of attaching the stabilizer bar 1 to the vehicle body via the bush 2 includes a combination of the above-described support method and each bush form as appropriate.

JP 2009-073366 A JP 2009-083643 A JP 2000-046110 A

As described above, there are several combinations of methods for attaching the stabilizer bar 1 to the vehicle body. For example, there is a method for supporting the stabilizer bar 1 by the above-described crimping method using the bush 2 of an elastic member. There are the following problems.
That is, as described above, the stabilizer bar 1 is twisted. However, when the pressure-bonding force of the bush 2 to the stabilizer bar 1 is insufficient, the stabilizer bar 1 is rotated against the rotation of the stabilizer bar 1 in the circumferential direction. Thus, the follow-up of the bush 2 becomes insufficient. As a result, there is a problem that an abnormal sound called a stick-slip sound is generated due to friction between the stabilizer bar 1 and the bush 2.

  In order to suppress the generation of this abnormal noise, it is effective to increase the tightening force of the bush 2 against the stabilizer bar 1. As the method, for example, in the bush 2, the inner diameter of the hole through which the stabilizer bar 1 is inserted is made smaller than the outer diameter of the stabilizer bar, or the bush 2 in which the metal plate 4 is embedded is used. .

However, each of these bushes with a small inner diameter and a metal plate causes new problems that it is difficult to assemble the stabilizer bar 1 to the vehicle body and that it is difficult to evenly tighten the stabilizer bar 1 to the stabilizer bar 1. That is, with the small inner diameter bush, it is difficult to attach the bracket 3 to the bush. In general, as shown in FIG. 10, the bush is mounted on the stabilizer bar 1 by opening the bush 2 from a mounting cut 2 a formed in the bush 2. Therefore, in the bush including the metal plate 4, the opening operation of the bush 2 is not easy due to the rigidity of the metal plate 4, and it is difficult to attach the bush 2 to the stabilizer bar 1 itself. Further, when the opening operation is largely performed, the metal plate 4 is deformed or the work hardening occurs in the metal plate 4. As a result, there is also a concern that a uniform tightening force does not act on the peripheral surface of the stabilizer bar 1 and an abnormal noise is caused again. In addition, even when a plate made of resin or the like is used instead of the metal plate 4, if a large opening operation is performed, there is a possibility that breakage, cracks, and deformation may occur due to bending fatigue. is there.
As described above, when the stabilizer bar is gripped by the bush of the elastic member, there is a problem in that the generation of abnormal noise is contradictory to the improvement of the assembly of the bush to the stabilizer bar.

  The present invention was made to solve such problems, and an object of the present invention is to provide a stabilizer bar mounting bush that can achieve both the suppression of abnormal noise generation and the improvement of assembly. To do.

In order to achieve the above object, the present invention is configured as follows.
That is, the stabilizer bar mounting bush according to one aspect of the present invention attaches and supports at least the radially inner surface of the pressurizing plate having a C-shaped cross section to a cylindrical elastic body and fits the stabilizer bar to the diameter of the stabilizer bar. A stabilizer bar that applies a tightening force to the stabilizer bar by reducing the diameter of the through hole of the elastic body and crushed by receiving a compressive load in the radial direction along with the displacement of the pressurizing plate in the closing direction. The mounting bush includes a notch for loading a stabilizer bar into the through hole of the bush, and a chamfered portion is provided at a contact portion located at a contact point between the notch and the through hole so as to face the notch. The diameter in the diameter direction of the stabilizer bar from the inner surface portion of the through hole to the outer end of the chamfered portion is the diameter of the stabilizer bar. Remote characterized by being shorter.

  The pressurizing plate may further include a bracket embedded in the elastic body and compressing the bush from the radially outer side.

  Further, the chamfered portion is formed based on the outer end and a finished surface starting from the outer end, and the finished surface moves along the trajectory of the stabilizer bar that is loaded into the through hole through the cut. It can be set to a position that coincides with or a position away from the movement locus.

  Further, the finish surface may be set at a position between a position that coincides with the movement locus and a position that coincides with a tangent line from the outer end to the through hole.

  According to the stabilizer bar mounting bush in one aspect of the present invention, the chamfered portion is provided on the inner surface portion of the through hole in the notch of the bush, and the length of the chamfered portion in the diameter direction is set smaller than the diameter of the stabilizer bar. With this configuration, even if the bush has a smaller through hole in the bush to increase the tightening force in order to suppress the occurrence of abnormal noise, An opening angle can be reduced compared with the past. Therefore, according to the stabilizer bar mounting bush in one aspect of the present invention, it is possible to suppress the generation of abnormal noise and to improve the assembling property between the bush and the stabilizer bar. Further, by reducing the bush opening angle, it is possible to suppress deformation of the pressurizing plate and to suppress the occurrence of new abnormal noise. Furthermore, as described above, the bush has a chamfered portion, but since its length is set shorter than the diameter of the stabilizer bar, the chamfered portion is completely crushed when the stabilizer bar is completely loaded into the bush. There is no gap between the through hole of the bush and the outer peripheral surface of the stabilizer bar. Therefore, the foreign matter does not enter the through hole after assembly, and the generation of abnormal noise due to the foreign matter can be prevented.

  In addition, since the pressurizing plate is constructed so that at least the radially inner surface is attached to the bush, the diameter of the pressurizing plate can be increased, and the tightening force can be homogenized in the circumferential direction, and the pressurizing plate can be applied during assembly. The opening angle of the pressure plate can be suppressed, and the dimensions of the chamfered portion can be secured.

  Moreover, according to the structure which attaches at least radial direction inner surface of a pressurization board in contact with a bush, it is also possible to attach a pressurization board to the outer surface of a bush, for example. Therefore, it is also possible to use a pressurizing plate as a member for attaching the bush loaded with the stabilizer bar to the vehicle body or the like.

  On the other hand, not only the radially inner surface but also the outer surface of the pressure plate is in contact with the bush. In other words, in the configuration in which the pressure plate is embedded in the bush, a portion of the bush is interposed between the pressure plate and the bracket. Can be prevented from occurring.

  Further, by setting the finished surface of the chamfered portion at a position that matches the movement trajectory of the peripheral surface of the stabilizer bar, the opening angle of the bush that opens from the cut can be minimized.

  In addition, by setting the finished surface of the chamfered portion between a position that matches the movement trajectory and a position that matches the tangent line from the outer end to the through hole, the chamfered portion can be effectively used in the gripping state of the stabilizer bar. The tightening force can be generated by crushing.

It is a front view of the bush for stabilizer bar attachment in one embodiment of the present invention. It is an enlarged view of the B section of the bush shown in FIG. It is sectional drawing in the AA part of the bush shown in FIG. It is a figure which shows the state which loads a stabilizer bar to the bush shown in FIG. It is a figure for demonstrating the reason which made the side surface of the bush shown in FIG. 1 the inclined surface. It is a perspective view of the bracket for attaching the bush shown in FIG. 1 to a vehicle body. It is a perspective view which shows the state in which the bush shown in FIG. 1 was attached to the vehicle body. It is sectional drawing in the modification of the bush shown in FIG. It is a perspective view of the stabilizer part containing the conventional bush. It is a figure which shows the conventional bush.

  A stabilizer bar mounting bush according to an embodiment of the present invention will be described below with reference to the drawings. In each figure, the same or similar components are denoted by the same reference numerals.

  The bush for attaching the stabilizer bar in the present embodiment is a cylindrical body made of an elastic material as one structural example, and has a through hole extending over the entire length in the axial direction, and on the inner circumference of the through hole. A bar-like shape having a notch extending along the diametrical direction of the through-hole between one location and the outer wall surface of the cylindrical body and extending over the entire length in the axial direction, and loaded into the through-hole through the notch A bushing for holding the stabilizer bar, which has a C-shaped cross section, extends in the axial direction, and has a pressurizing plate attached to at least the radially inner surface in contact with the bushing, and the inner diameter of the through hole is the stabilizer bar The bush grips the stabilizer bar by pressure contact by tightening from the pressure plate and crushing the through-hole by loading the stabilizer bar. The contact portion between the inner surface of the through hole and the notch further includes a chamfered portion formed in the notch over the entire length in the axial direction, and the length of the chamfered portion in the diametric direction is larger than that of the pressurizing plate. It is smaller than the amount of crushing of the bush on the inside.

As shown in FIG. 7, such a bush is fitted and fastened to the bracket 211 in a state in which a stabilizer bar 210 corresponding to an example of a supported member is loaded, as in the conventional case. The bracket 211 to which the bush is attached is attached to a lower body member 212 such as a suspension cloth. In such an attached state, the bush clamps and holds the stabilizer bar 210 that is twisted by tightening with the bracket 211.
Such a bush will be described in more detail below.

  FIG. 1 shows a bush 101 for attaching a stabilizer bar in the present embodiment. The bush 101 is a member made of an elastic member such as a rubber material, and is larger than a case where a lubricant such as higher fatty acid amide, paraffin, or silicone oil is applied to follow the twist of the stabilizer bar 210. It is a member formed from a material having frictional force and viscoelasticity. For example, the bush 101 can be formed from a material in which natural rubber is the main component and various additives such as carbon black and other synthetic rubbers are appropriately added. Here, natural rubber is less susceptible to dynamic fatigue, and in particular, has a higher adhesive force than other general-purpose rubbers such as BR (butadiene rubber) and SBR (styrene butadiene rubber), which means that it is difficult to slip, and the supported member is non-slip. It is suitable for members that are bonded and non-lubricated. Of course, it goes without saying that synthetic rubber or elastic elastomer may be mainly used.

  Such a bush 101 has an inverted U-shaped cross-sectional shape in the present embodiment, and has a circular shape penetrating the bush 101 in the axial direction of the bush 101 in the axial direction (paper surface penetration direction in FIG. 1) 191. A cylindrical body in which a through hole 110 is formed. As shown in FIG. 7, a stabilizer bar 210 is loaded into the through hole 110. At this time, the inner diameter φA of the through hole 110 is designed to be smaller than the outer diameter φB of the stabilizer bar 210 (FIG. 4) so that the bush 101 clamps and holds the stabilizer bar 210. For example, in one embodiment, the inner diameter φA of the through hole 110 is 18 mm, and the outer diameter φB of the stabilizer bar 210 is 21 mm. As an example, the width W of the bush 101 is about 50 mm.

  By making the inner diameter of the through hole smaller than the outer diameter of the stabilizer bar in this manner, when the bush 101 is tightened with the bracket 211 after the stabilizer bar 210 is loaded, the bush 101 of the elastic member mainly surrounds the stabilizer bar 210. It is compressed and crushed in the area near the surface. As a result, the bush 101 firmly holds the stabilizer bar 210, thereby suppressing the occurrence of a so-called stick-slip noise.

  Further, the bush 101 has a pressurizing plate 130 in order to apply a tightening force evenly from the bush 101 to the peripheral surface 210 a of the stabilizer bar 210 loaded in the through hole 110. The pressurizing plate 130 is a member having a C-shaped cross section that is divided at one location in the vicinity corresponding to a cut 120 described below, and is a metal plate that extends in the axial direction 191.

  In the present embodiment, such a pressure plate 130 is formed on the bush 101 at a position as far as possible from the inner peripheral surface 110a of the through hole 110 in the diameter direction 192 of the through hole 110 and the stabilizer bar 210 as shown in FIG. Buried. In the structure embedded as described above, the pressurizing plate 130 is disposed on the outer wall surface 1011 side than the half of the bush thickness between the inner peripheral surface 110a and the outer wall surface 1011 of the bush 101 for the reason described later. preferable. In the present embodiment, the pressurizing plate 130 is embedded in the vicinity of the inside of the outer wall surface 1011 of the bush 101 as shown in the figure.

However, the pressurizing plate 130 is not limited to such an embedded form, and may be attached with at least the radially inner surface 130a in contact with the bush 101, that is, with the inner surface 130a in contact with the outer wall surface 1011 of the bush 101. The pressurizing plate 130 is made of metal in the present embodiment, but is not limited to metal, and may be a member made of a material having rigidity capable of the above-described tightening action.
As an example, the inner surface 130a of the pressurizing plate 130 has a diameter of about 40 mm.

  By providing the pressurizing plate 130 at a position away from the inner peripheral surface 110a of the through hole 110 as described above, the thickness of the bush 101 between the pressurizing plate 130 and the through hole inner peripheral surface 110a in the diameter direction 192 is increased. can do. As described above, the bush 101 is compressed and crushed by tightening, but by setting the wall thickness in this way, the amount of crushed can be increased when tightening with a predetermined tightening force so as to achieve a target spring constant. In addition, the stabilizer bar 210 can be loaded into the bush 101 more easily than in the prior art. Moreover, the effect that the chamfering part demonstrated below can be largely provided in a radial direction also arises.

  In addition, the bush 101 clamps and holds the stabilizer bar 210 that generates torsion. By setting the wall thickness as described above, the stabilizer bar tends to rotate in the circumferential direction as compared to the case where the wall thickness is small. The followability of the bush 101 with respect to 210 can be enhanced. Therefore, it is possible to reduce the slip of the bush 101 with respect to the stabilizer bar 210 that is twisted, thereby reducing the occurrence of abnormal noise.

  Further, in the present embodiment, the bush 101 has a shape formed in an inverted U shape that is inverted upside down, which corresponds to the substantially Ω-shaped bracket 211 as shown in FIG. It is not limited to the shape. Therefore, the shape of the bush 101 corresponds to the shape of the bracket 211.

  Further, the bush 101 has a notch 120 for dividing the bush 101 in order to load the stabilizer bar 210 into the through hole 110. This notch 120 extends along the diameter direction 192 of the through hole 110 between one portion of the inner peripheral surface 110 a of the through hole 110 and the outer wall surface 1011 of the bush 101, and also in the axial direction 191. It extends over the entire length. By having the notch 120, when the stabilizer bar 210 is loaded into the through hole 110, as shown in FIG. 4, the bush 101 can be opened substantially in the circumferential direction of the through hole 110, and the through hole 110 can be opened. .

  In the present embodiment, as shown in FIG. 1, a gap 121 having an appropriate width 121a is formed in the cut 120, but the width 121a may be large or small. Therefore, the cut 120 may be a simple cut having a width 121a of zero.

  Further, the bush 101 has a chamfered portion 140 that is one of characteristic components of the bush 101. As described above, when the stabilizer bar 210 is loaded into the through hole 110, the bush 101 is opened from the notch 120. At this time, the part that most affects the opening angle of the bush 101 becomes clear from FIG. This is a “contact portion” corresponding to a portion that interferes with the peripheral surface 210 a of the stabilizer bar 210, that is, a region including a contact point between the cut 120 and the inner peripheral surface 110 a of the through hole 110. Therefore, the opening angle of the bush 101 can be reduced by cutting this contact portion from the bush 101. That is, it becomes possible to facilitate the loading operation of the stabilizer bar 210 to the bush 101. The chamfered portion 140 corresponds to such a contact portion to be cut out, and corresponds to a hatched portion shown in FIG. Further, such a chamfered portion 140 is formed over the entire length of the bush 101 in the axial direction 191. As described above, the chamfered portion 140 can improve the assembling property of the stabilizer bar 210 to the bush 101.

  On the other hand, from the viewpoint of the ease of assembly of the stabilizer bar 210, it is preferable that the chamfered portion 140 is large. However, there is a limit to the size of the chamfered portion 140 because of the problem of suppressing abnormal noise generation. Hereinafter, the setting of the size of the chamfered portion 140 will be described in detail.

  That is, as described above, the bush 101 is crushed with respect to the peripheral surface 210a of the stabilizer bar 210 and is gripped by being tightened by the bracket 211 after the stabilizer bar 210 is loaded. On the other hand, the amount of collapse varies depending on the material of the bush 101, the inner diameter of the through hole 110, the tightening condition, and the like. In addition, a gap remaining between the peripheral surface 210a of the stabilizer bar 210 and the chamfered portion 140 even after tightening may cause entry of foreign matter into the gap, generation of abnormal noise, and the like.

  For these reasons, the amount of chamfering in the chamfered portion 140, that is, the size of the chamfering must first be smaller than the amount of crushing of the bush 101 with respect to the peripheral surface 210 a of the stabilizer bar 210. By satisfying such a premise, the chamfered portion 140 can satisfy both the improvement of the assembling workability of the stabilizer bar 210 and the suppression of abnormal noise generation.

Under such a premise, a design method of the chamfered portion 140 will be specifically described.
As shown in FIG. 2, the length along the diameter direction 192 between the contact 142 between the cut 120 and the inner peripheral surface 110a of the through hole 110 and the outer end 143 forming the chamfered portion 140 at the cut 120 is defined as C. And In addition, a position on the inner peripheral surface 110 a of the through hole 110 facing the notch 120 in the diameter direction 192 is defined as an inner surface portion 144.

  From the above-mentioned premise, C <bush 101 collapse amount. Here, since it is discussed that the chamfered portion 140 is provided, of course, C> zero. Therefore, the chamfered portion 140 may be designed with a dimension of C so as to satisfy this relationship. Here, the amount of crushing of the bush 101 is that the inner diameter of the through hole 110 is expanded to the outer diameter of the stabilizer bar 210 by selecting the material of the bush 101 as appropriate. This corresponds to a value obtained by subtracting the inner diameter φA of the through hole 110 from the diameter φB. Referring to the value of one embodiment described above, since φB is 21 mm and φA is 18 mm, C <3 (21-18) mm, and in one embodiment, C is set to 2 mm. This concept is based on the following contents. That is, when the bush 101 is loaded with the stabilizer bar 210 and tightened, it is ideal that the through hole 110 is uniformly crushed on the inner peripheral surface thereof. However, since the chamfered portion 140 is provided in the through hole 110, the stabilizer bar 210 actually moves slightly toward the chamfered portion 140, and the through hole 110 is not evenly crushed, and most of the chamfered portion 140 is crushed. It will be. Based on this actual content, a relationship of C <the amount of collapse of the bush 101 is obtained.

  Alternatively, there is the following design method. That is, in the bush 101 according to the present embodiment, the gap 121 exists in the cut 120. Therefore, the width 121a exceeding zero exists at the time of design and manufacture, and the perfect through hole 110 is designed at this time. However, in the final use state, the gap 121 is crushed and the width 121a becomes zero. Strictly speaking, in this final use state, the through hole 110 is not a perfect circle, and using the subtracted value of the inner diameter φA from the outer diameter φB described above slightly reduces the design accuracy. Under such a situation, the following virtual state is used to design the chamfered portion 140 with higher accuracy. In other words, a state is considered in which the stabilizer 101 is not loaded and the bush 101 is simply tightened until the width 121a of the gap 121 becomes zero. In order to satisfy the above-described assumption in this virtual state, the dimension in the diameter direction 192 between the outer end 143 and the inner surface portion 144 may be made shorter than the diameter φB of the stabilizer bar 210. The chamfered portion 140 may be designed so as to satisfy such a relationship. Note that if the cut 120 does not have the gap 121, it is not necessary to consider the virtual state.

  However, actually, as described above as an example, when the outer diameter φB and the inner diameter φA are both about 20 mm and the width 121a is also 1 mm, chamfering is performed according to the relationship of C <the amount of collapse of the bush 101. Even if the part 140 is designed, there is almost no trouble.

As described above, the position of the outer end 143 in the chamfered portion 140 is set, and the finished surface 141 forming the chamfered portion 140 is designed as follows with the outer end 143 as a starting point. That is, the minimum open state of the bush 101 for loading the stabilizer bar 210 is a state where the outer end 143 contacts the outer surface 210a of the stabilizer bar 210 as shown in FIG. Therefore, the finish surface 141 may be disposed at the minimum on the locus 145 (illustrated by a one-dot chain line) of the outer surface 210a. On the other hand, in order for the chamfered portion 140 to be formed in the minimum open state of the bush 101 described above, the finish surface 141 is maximally tangent 146 to the inner peripheral surface 110a of the through hole 110 from the outer end 143 (two (Shown in the dotted line). Accordingly, the finished surface 141 is designed with a line within an arbitrary angle between the locus 145 and the tangent line 146 starting from the outer end 143.
In this way, the finished surface 141 in the chamfered portion 140 is set, and the chamfered portion 140 is designed.

  Since the chamfered portion 140 is designed as described above, it is possible to satisfy both the improvement of the assembling workability of the stabilizer bar 210 and the suppression of abnormal noise generation.

  Further, in the bush 101, the side surface 1012 of the bush 101 forming the through hole 110 is configured as follows. That is, when the stabilizer bar 210 is not loaded, the side surface 1012 is formed with an inclined surface 1012a that is concentric with the through hole 110 and that is recessed toward the through hole 110 at a uniform inclination angle. Of the side surface 1012, the portion excluding the inclined surface 1012a is a flat surface. The reason why such an inclined surface 1012a is provided will be described below.

  That is, as shown in FIG. 5A, when the side surface S of the bush 101 is formed in a plane perpendicular to the axial direction 191 in a state where the stabilizer bar 210 is not loaded, As shown in (b), in a state in which the stabilizer bar 210 is loaded, the side surface S protrudes outward of the bush 101 in the axial direction 191 due to the collapse of the through hole 110. As a result, a lip-shaped portion is generated in the contact portion S1 of the side surface S with the peripheral surface 210a of the stabilizer bar 210, and foreign matter is caught, resulting in abnormal noise and the like. In order to prevent the occurrence of such a problem, in the present embodiment, the above-described depressed inclined surface 1012a is formed corresponding to the portion where the through hole 110 is formed.

The bush 101 configured as described above is attached to the lower body member 212 of the vehicle body using the bracket 211 in a state in which the stabilizer bar 210 is loaded, as described in the beginning of the “Mode for Carrying Out the Invention” column. By being tightened by the bracket 211, the bush tightens and holds the stabilizer bar 210 where torsion occurs.
Thus, according to the bush 101 attached to the vehicle body, by providing the chamfered portion 140 in particular, it is possible to achieve both the suppression of abnormal noise generation and the improvement of assemblability as already described.

  As described above, the bush 101 of the present embodiment has a configuration in which the pressurizing plate 130 is embedded, and further, it has been described that the pressurizing plate 130 may be attached to the outer wall surface 1011 of the bush 101. The configuration for attaching the pressurizing plate 130 to the outer wall surface 1011 of the bush 101 will be further described.

  That is, the configuration in which the pressurizing plate 130 is attached to the outer wall surface 1011 of the bush 101 includes the following two forms. That is, first, the pressure plate 130 is attached to the outer wall surface 1011 of the bush 101 with an adhesive, for example, and the bush 101 with such a pressure plate is attached to the vehicle body with the bracket 211.

Second, like the bush 102 shown in FIG. 8, the bush 102 does not have the pressurizing plate 130. Here, in the bush 102, the other components of the bush 102 excluding the pressurizing plate 130 are the same as those in the bush 101 described above. For such a bush 102, the bracket 211 has both a function of the pressurizing plate 130 and a function of tightening the bush 102 and attaching it to the vehicle body.
Even in the second form as described above, it is possible to achieve both the suppression of abnormal noise generation and the improvement of the assemblability as in the case of the configuration using the bush 101.

  The present invention is applicable to a stabilizer bar mounting bush used for mounting a stabilizer bar of an automobile to a vehicle body.

101, 102 ... Stabilizer bar mounting bush,
110 ... through hole, 120 ... cut, 130 ... pressure plate, 140 ... chamfered portion,
210: Stabilizer bar, 211: Bracket.

Claims (4)

At least the radially inner surface of the pressure plate having a C-shaped cross section is attached to a cylindrical elastic body, and the diameter of the through hole of the elastic body that fits and supports the diameter of the stabilizer bar is reduced. In the stabilizer bar mounting bush that applies a tightening force to the stabilizer bar by being crushed by receiving a compressive load in the radial direction together with the displacement in the closing direction of the pressurizing plate,
A notch for loading a stabilizer bar into the through hole of the bush is provided, and a chamfered portion is provided in the entire axial direction at a contact portion located at a contact point between the notch and the through hole,
The dimension in the diameter direction of the stabilizer bar from the inner surface part of the through hole facing the notch to the outer end of the chamfered part was set shorter than the diameter of the stabilizer bar.
A stabilizer bar mounting bush.   2. The stabilizer bar mounting bush according to claim 1, further comprising a bracket embedded in the elastic body and compressing the bush from a radially outer side.   The chamfered portion is formed on the basis of the outer end and a finished surface starting from the outer end, and the finished surface coincides with the movement locus of the peripheral surface of the stabilizer bar loaded through the notch into the through hole. The stabilizer bar mounting bush according to claim 1 or 2, wherein the stabilizer bar mounting bush is set at a position to be moved or a position away from the movement locus.   4. The stabilizer bar mounting bush according to claim 3, wherein the finishing surface is set at a position between a position that coincides with the movement locus and a position that coincides with a tangent to the through hole from the outer end.

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