JP2014028577A - Dislocation prevention member and rod material with dislocation prevention member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technique for actualizing large load resistance while suppressing a lateral dislocation prevention member from increasing in size.SOLUTION: A dislocation prevention member 6 includes a first member 8 and a second member 10. The first member 8 and second member 10 are fixed to an outer peripheral surface of a stabilizer 2 in an annular shape by fixing one end of the first member 8 and one end of the second member 10 and also fixing the other end of the first member 8 and the other end of the second member 10. The first member 8 has projection parts 12, formed on sides extending in a direction orthogonal to the axial direction of the stabilizer 2 in plan view of the first member 8, at the one end and the other end of the first member 8 respectively. The second member 10 has recessed parts 14, formed on sides extending in the direction orthogonal to the axial direction of the stabilizer 2 in plan view of the second member 10 and fitted to the projection parts 12, at ends fixed to the ends of the first member 8 where the projection parts 12 are formed.

Description

  The technology disclosed in the present specification relates to a slip prevention member that prevents a bar from moving in the axial direction. In particular, the present invention relates to a slip prevention member that can be suitably used for a stabilizer attached to a vehicle suspension.

  When a bar is used as a machine part, it is necessary to prevent the bar from shifting in the axial direction. For example, a stabilizer (an example of a bar) for suppressing a roll of a vehicle includes a shift prevention member for preventing a shift in the axial direction. That is, when the vehicle turns, a so-called roll is generated in which the upper part of the vehicle body is inclined outward by centrifugal force, and the contact area between the inner tire and the ground is reduced. To suppress the roll, a stabilizer is attached to the suspension of the vehicle. A metal bar is used for the stabilizer, and usually has a substantially U-shaped shape obtained by bending the bar. The stabilizer is usually fixed to the vehicle body by attaching a cylindrical rubber bush to the stabilizer and bolting a U-shaped bracket covering the rubber bush to the floor of the vehicle body. That is, the stabilizer itself is not rigidly fixed to the vehicle body, but is fixed to the vehicle body via the rubber bush.

  When the vehicle body receives a force in its width direction (hereinafter also referred to as a vehicle width direction) as the vehicle turns, the stabilizer twists and restrains the roll of the vehicle. At this time, if the force in the vehicle width direction is relatively large, the stabilizer slides in the rubber bush and shifts in the vehicle width direction (so-called lateral displacement occurs). The lateral displacement reduces the durability of the rubber bush and causes abnormal noise. In view of this, a technology has been developed in which a slip prevention member is fixed in the vicinity of the rubber bush to prevent the stabilizer from slipping laterally. For example, a metal ring member may be used as a slip prevention member. In this case, the stabilizer is inserted into the inside of the ring member from the end thereof, the ring member is moved to a predetermined position of the stabilizer, and the ring member is caulked at the predetermined position to be fixed to the stabilizer. Then, the lateral displacement of the stabilizer is prevented by bringing the ring member into contact with the rubber bush. Alternatively, as disclosed in Patent Document 1, a structure has been proposed in which end portions of two semi-annular members are joined to each other to form an annular shape and press-contacted to the outer periphery of the stabilizer.

JP-A-11-210713

  When a metal ring member (non-divided) is used as a lateral slip prevention member, there is a problem that the diameter of the ring member becomes large. That is, when the cross-sectional shape of the bar is not uniform, the diameter of the ring member must be matched to the portion where the cross-sectional shape of the bar is the largest. For example, in the above-described stabilizer, a steel material having a circular cross section is used, and its end is processed flat. For this reason, in order to insert the end portion of the stabilizer inside the ring member, it is necessary to increase the diameter of the ring member in accordance with the end portion of the stabilizer. On the other hand, the technique of Patent Document 1 has a structure in which the ends of the semi-annular members are joined to form an annular shape, so that the semi-annular member can be directly fixed to a desired position of the bar. For this reason, it has an advantage that the diameter of the lateral slip prevention member can be reduced. However, since the end portions of the semi-annular members are coupled to each other, the semi-annular members are easily loosened by a load acting on the lateral slip prevention member. As a result, the technique of Patent Document 1 cannot withstand a large lateral displacement load.

  This specification discloses the technique which can implement | achieve a big load resistance, suppressing the enlargement of a side slip prevention member.

  One aspect of the technology disclosed in this specification can be embodied in a slip prevention member having the following configuration. The shift prevention member has a first member and a second member which are fixed to at least one portion of the bar and have a substantially rectangular steel material in a semi-annular shape. The first member and the second member have an annular shape by fixing one end of the first member and one end of the second member, and fixing the other end of the first member and the other end of the second member. It is comprised so that it may be fixed to the outer peripheral surface of a bar. Each of the one end portion and the other end portion of the first member has a convex portion formed on a side extending in a direction orthogonal to the axial direction of the bar when the first member is viewed in plan. Each of the end portions of the second member fixed to the end portion where the convex portion of the first member is formed has a side extending in a direction perpendicular to the axial direction of the bar when the second member is viewed in plan view, A recess that fits with the protrusion is formed.

  According to this configuration, since the ends of the first member and the second member are fixed to the bar as an annular shape, it can be directly fixed at a desired position of the bar. For this reason, the diameter of a slip prevention member can be made small and an enlargement can be suppressed. Moreover, the convex part formed in each of the one end part and the other end part of the first member is formed on the side extending in the direction parallel to the axial direction of the bar when the first member is viewed in plan view, It is formed on a side extending in a direction orthogonal to the axial direction of the bar. Correspondingly, the recesses formed in each of the one end and the other end of the second member are also formed on sides extending in a direction perpendicular to the axial direction of the bar when the second member is viewed in plan. . As shown in the experimental results described later, by using such a coupling structure, it is possible to withstand a relatively large lateral displacement load.

  This specification discloses the bar material to which the above-mentioned slip prevention member was fixed. At least one shift preventing member is fixed to the bar. According to this configuration, it is possible to realize a bar that can withstand a relatively large lateral load.

  Details of the technology disclosed in this specification and further improvements will be described in detail in the detailed description and examples.

The stabilizer concerning Example 1 is shown typically. (A) shows typically the 1st member which concerns on Example 1 before shape | molding in a semicircle, (b) shows typically the 2nd member which concerns on Example 1 before shape | molding in a semicircle. The 2nd member which concerns on Example 1 shape | molded by the semi-annular form is shown. (A) shows typically the 1st member and 2nd member concerning Example 1 before fixing to a stabilizer, and (b) shows the 1st member and 2nd member concerning Example 1 after fixing to a stabilizer. Is shown schematically. (A) shows typically a metal ring member (prior art) after being fixed to a bar, and (b) schematically showing a slip prevention member according to Example 1 after being fixed to a bar. Shown in (A) shows typically the slip prevention member concerning Example 1 fixed to the stabilizer, (b) shows typically the modification of the slip prevention member concerning Example 1 fixed to the stabilizer, ( c) shows the comparative example of the slip prevention member based on Example 1 fixed to the stabilizer typically. The measurement-experiment result of the lateral slip | shift prevention load of the slip prevention member of Fig.6 (a)-(c) is shown. (A) shows typically the slip prevention member concerning Example 1 fixed to the stabilizer, (b) shows typically one modification of the slip prevention member concerning Example 1 fixed to the stabilizer. (C) shows typically another modification of the slip prevention member concerning Example 1 fixed to the stabilizer. (A) shows typically the 1st member concerning Example 2 before shape | molding in a semi-annular form, (b) shows the 2nd member concerning Example 2 before shape | molding in a semi-annular form typically.

  The main features of the embodiments described below are listed. The technical elements described below are independent technical elements and exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. Absent.

(Characteristic 1) As for the slip prevention member disclosed in this specification, a plurality of holes may be formed in the first member and the second member. According to this structure, since the area of the steel material of the 1st member and the 2nd member decreases by the area of a hole, the rigidity of the 1st member and the 2nd member falls. As a result, when the first member and the second member are fixed (pressure contact) to the outer peripheral surface of the bar, the pressure generated between the first member and the second member and the bar can be increased. For this reason, the 1st member and the 2nd member are more firmly fixed to a bar, and can endure a big lateral displacement load. Moreover, the shift prevention member can be reduced in weight by forming a plurality of holes.

(Characteristic 2) The slip prevention member disclosed in the present specification is such that, of the portions where the convex portions and the concave portions are fitted, the central portions in the circumferential direction of the first member and the second member are radially outward of each other. The portion where the annular first member and second member abut each other may be parallel to the axial direction of the bar. According to this configuration, it is possible to withstand a large lateral load.

(Characteristic 3) The slip prevention member disclosed in the present specification may be used in a vehicle suspension stabilizer.

  In the first embodiment, a stabilizer attached to a vehicle suspension and a displacement preventing member fixed to the stabilizer will be described. FIG. 1 is a schematic diagram of the stabilizer 2. The stabilizer 2 is a bar made of metal (for example, steel), and generally has a substantially U-shape obtained by bending a bar having a circular cross-sectional shape. Both ends 2a and 2b of the stabilizer 2 are formed flat by pressing a bar. Through holes 5 a and 5 b are formed at both ends 2 a and 2 b of the stabilizer 2. The stabilizer 2 is fixed to the vehicle body by attaching a cylindrical rubber bush 3 to the stabilizer 2 and fixing a U-shaped bracket 4 covering the rubber bush 3 to the floor of the vehicle body with a bolt. That is, the stabilizer 2 is fixed to the vehicle body via the rubber bush 3. A slip prevention member 6 is disposed adjacent to the rubber bush 3. The slip prevention member 6 is fixed to the stabilizer 2. Further, both ends 2a and 2b of the stabilizer 2 are fixed to an absorber or an arm via a control link.

The displacement preventing member 6 will be described. The slip prevention member 6 includes a first member 8 and a second member 10 shown in FIGS. 2 (a) and 2 (b). The first member 8 and the second member 10 are steel materials having a substantially rectangular shape in plan view. The first member 8 and the second member 10 are formed using, for example, SPHC or SPCC (Japanese Industrial Standard), or a steel material or aluminum alloy that can be pressed. A dimension l _x of the first member 8 in the longitudinal direction (the x-axis direction in FIG. 2A) is a length corresponding to the diameter of the central portion (circular section) of the stabilizer 2. That is, when the first member 8 and the second member 10 are annularly connected in the longitudinal direction, the length is formed such that the central portion of the stabilizer 2 can be disposed in the annular ring. The dimension l _y1 of the first member 8 in the short direction (y-axis direction in FIG. 2A) is set to a length that allows a sufficient contact area between the first member 8 and the stabilizer 2 to be obtained. 8 is shorter than the longitudinal dimension l _x . A convex portion 12 and a concave portion 13 adjacent to the convex portion 12 are formed at one end and the other end in the longitudinal direction of the first member 8. The dimension “a” of the convex part 12 in the x-axis direction is substantially the same as the dimension “b” of the concave part 13 in the x-axis direction. Further, the dimension l _{y2 of} the convex portion 12 in the y-axis direction (that is, the length from the upper long side to the tip of the first member 8 in FIG. 2A) is the dimension of the first member 8 in the y-axis direction. It is shorter than l _y1 and is substantially the same as the dimension l _{y3 of} the recess 13 in the y-axis direction (that is, the length from the lower long side to the bottom of the first member 8 in FIG. 2A). A plurality of holes 16 are formed in the center of the first member 8. The plurality of holes 16 are arranged at equal intervals in the x-axis direction of the first member 8.

The second member 10 also has the same configuration (dimensions) as the first member 8. That is, the dimension l _x in the longitudinal direction (x-axis direction) of the second member 10 is the same as the dimension l _{x in} the longitudinal direction (x-axis direction) of the first member 8, and the short direction ( The dimension l _y1 in the y-axis direction) is the same as the dimension l _{y1 in} the short direction (y-axis direction) of the first member 8. In addition, a convex portion 15 and a concave portion 14 are formed at both end portions in the longitudinal direction of the second member 10, similarly to the convex portion 12 and the concave portion 13 of the first member 8, while at the center of the second member 10. A plurality of holes 16 are formed.

  FIG. 3 shows the second member 10 formed into a semi-annular shape. The second member 10 is bent and shaped so as to follow the shape of the outer peripheral surface of the stabilizer 2. In addition, the 1st member 8 is also bent so that the shape of the outer peripheral surface of the stabilizer 2 may be followed, and it shape | molds in a semi-ring shape.

  FIG. 4 shows how the first member 8 and the second member 10 are fixed to the stabilizer 2. As shown in FIG. 4A, the first member 8 and the second member 10 that are formed in a semi-annular shape include a convex portion 12 and a concave portion 13 formed at one end of the first member 8, and a second member. It arrange | positions at the stabilizer 2 so that the recessed part 14 and the convex part 15 which were formed in the one end part of 10 may oppose. At this time, the convex portion 12 and the concave portion 13 formed at the other end portion of the first member 8 (not shown) are also opposed to the concave portion 14 and the convex portion 15 formed at the other end portion of the second member 10. . The first member 8 and the second member 10 are each slid in the direction of the arrow, and as shown in FIG. 4B, at one end and the other end of each member, the protrusion 12 and the recess 14 and the recess 13 and the convex part 15 fit. That is, since the dimensions of the convex portions 12 and 15 and the concave portions 13 and 14 are set as described above, the convex portion 12 and the concave portion 14 and the concave portion 13 and the convex portion 15 are fitted with almost no gap. In addition, one long side of the first member 8 and the other long side of the second member 10 are located on substantially the same straight line, and the other long side of the first member 8 and one long side of the second member 10 Are located on substantially the same straight line. In this state, the first member 8 and the second member 10 are annularly pressed against the outer peripheral surface of the stabilizer 2 by caulking with a press from the outside in the direction of the arrow, that is, the radial direction of the stabilizer 2. To be fixed. Here, as is apparent from FIGS. 2 and 4, the convex portion 12 and the concave portion 13 of the first member 8 are formed so that the shaft of the stabilizer 2 is viewed when the first member 8 is viewed in a plan view in the state shown in FIG. It is formed on a side (side extending in the longitudinal direction) extending in a direction orthogonal to the direction, and extends in parallel with the axial direction of the stabilizer 2. Further, the concave portion 14 and the convex portion 15 of the second member 10 also have sides (longitudinal direction) extending in a direction orthogonal to the axial direction of the stabilizer 2 when the second member 10 is viewed in a plan view in the state shown in FIG. Side) extending in parallel with the axial direction of the stabilizer 2. Therefore, when the central portion in the longitudinal direction of the first member 8 and the central portion in the longitudinal direction of the second member 10 are pulled toward the outside in the radial direction of the stabilizer 2, the convex portions 12 and 15 and the concave portions 13 and 14 are fitted. The portion S where the inner convex portion 12 and the concave portion 14 of the mating portion abut each other (the portion S where the convex portion 15 and the concave portion 13 abut each other (the side 12a of the first member 8 and the side 15a of the second member 10 are The portion in contact (hereinafter also referred to as a contact portion S) is parallel to the axial direction of the stabilizer 2. Thereby, it can prevent suitably that the 1st member 8 and the 2nd member 10 will separate by external force.

  Next, with reference to FIG. 5, the effect of the slip prevention member 6 in the present embodiment will be described in comparison with the effect of the conventional metal ring member 18. FIG. 5A shows a state in which the ring member 18 fixed to the stabilizer 2 is viewed from the axial direction of the stabilizer 2, and FIG. 5B shows the deviation preventing member 6 fixed to the stabilizer 2 in the axial direction of the stabilizer 2. The state seen from. In addition, illustration of the stabilizer 2 in Fig.5 (a), (b) is abbreviate | omitted. Conventionally, a member such as the ring member 18 is used as one of the members for preventing the lateral shift of the stabilizer. The ring member 18 is inserted from the end (2a or 2b) of the stabilizer 2, and is fixed by caulking at a predetermined position (part having a circular cross section). As shown in FIG. 1, the ends 2a and 2b of the stabilizer 2 are processed flat. For this reason, in order to insert the ring member 18 from the end portions 2a and 2b of the stabilizer 2, the inner diameter of the ring member 18 is designed to be large in accordance with the end portions 2a and 2b of the stabilizer 2. Therefore, when the ring member 18 is caulked and fixed at a predetermined position of the stabilizer 2, a part of the ring member 18 protrudes in the radial direction as shown in FIG. 5A, and a protrusion p1 is formed. Accordingly, the maximum diameter GD1 of the ring member 18 when fixed to the stabilizer 2 is increased by the amount of the protrusion p1. On the other hand, the displacement prevention member 6 of this embodiment shown in FIG. 5B has the two members 8 and 10 arranged in the vicinity of the desired position of the stabilizer 2 as described above, with respect to the outer peripheral surface of the stabilizer 2. The two are coupled to form an annular shape, and then caulked and fixed to the outer peripheral surface of the slabilizer 2. At this time, a part of the two members 8 and 10 slightly protrudes in the radial direction, and a protrusion p2 as shown in FIG. Therefore, the maximum diameter GD2 of the slip prevention member 6 when fixed to the stabilizer 2 is increased by the amount of the protrusion p2. However, the member constituting the deviation preventing member 6 of this embodiment is divided into two parts, and the two members 8 and 10 have an inner diameter when they are joined (before caulking and fixing), and the diameter of the stabilizer 2. It is preliminarily molded so as to be substantially equal to (the outer diameter at the position where the displacement preventing member 6 is fixed). Therefore, the size of the protrusion p2 formed after the caulking is fixed is much smaller than the protrusion p1 of the ring member 18. For example, when the diameter of the stabilizer 2 is 26 [mm] and the thickness of the deviation preventing member 6 is 3.2 [mm], the outer diameter of the deviation preventing member 6 in the direction not including the protrusion p2 is 32.4 [mm]. On the other hand, the outer diameter (maximum diameter GD2) of the shift preventing member 6 in the direction including the protrusion p2 is 33.6 [mm]. Although the protrusion p2 is formed, the maximum diameter of the slip prevention member 6 is increased by that amount, but the amount of increase is very small. For this reason, the maximum diameter GD2 of the slip prevention member 6 can be significantly smaller than the maximum diameter GD1 of the ring member 18.

  Then, the experiment which measured lateral shift prevention load about the slip prevention member 6 in a present Example is demonstrated. FIG. 6A shows the deviation preventing member 6 in this embodiment. In the experiment, as a modified example and a comparative example of the present embodiment, the lateral displacement prevention loads of the two types of displacement prevention members 22 and 20 having different shapes from the displacement prevention member 6 were also measured. 6B has a shape similar to that of the slip prevention member 6, but is different from the slip prevention member 6 in that a plurality of holes 16 are not formed. On the other hand, the displacement prevention member 20 (comparative example) of FIG. 6C is different from the displacement prevention member 6 in the following two points. One is that the protrusions and recesses of the two semi-annular members of the slip prevention member 20 extend in a direction perpendicular to the axial direction of the stabilizer 2 when the slip prevention member 20 is attached to the stabilizer 2. is there. That is, the slip prevention member 20 has substantially the same shape as the two-piece semicircular ring-shaped slip prevention fixing ring described in Patent Document 1. The other is that the slip prevention member 20 is not formed with a plurality of holes 16. 6 (a) to 6 (c) are all formed of a steel material having a plate thickness of 3.2 [mm] and a width of 14 [mm]. Each deviation prevention member was attached to the stabilizer 2 having a diameter of 26 [mm], and was fixed by caulking with the same load.

  FIG. 7 shows the result of measuring the lateral displacement prevention load of the displacement prevention member fixed to the stabilizer 2 under the above conditions. For each measurement, 10 deviation prevention members were used, and the maximum value, minimum value, and average value of the lateral deviation prevention load were determined. As shown in FIG. 7, the slip prevention member 6 according to the present example exhibited a lateral slip prevention load of about 3300 [N] on average, although there was some variation. The deviation preventing member 22 according to the modified example has a relatively large range of variation compared to other deviation preventing members, and showed a lateral deviation preventing load of about 1700 [N] on average. The deviation preventing member 20 according to the comparative example has a relatively small variation width as compared with other deviation preventing members, and showed an average lateral deviation preventing load of about 800 [N]. As is clear from the comparison between the slip prevention member 6 and the slip prevention member 22, the slip prevention member 6 in which the plurality of holes 16 are formed is approximately less than the prevention member 22 in which the holes 16 are not formed. A double lateral slip prevention load was shown. Further, as is apparent from a comparison between the slip prevention member 22 and the slip prevention member 20, the convex portion and the concave portion of the member are formed on the side extending in the direction perpendicular to the axial direction of the stabilizer 2 in parallel with the axial direction. The slip prevention member 22 showed about twice the lateral slip prevention load as compared with the slip prevention member 20 in which the convex portion and the concave portion of the member extend in the direction orthogonal to the axial direction of the stabilizer 2. From this, the convex portion and the concave portion of the member are arranged on the side extending in the direction orthogonal to the axial direction of the stabilizer 2 rather than extending in the direction orthogonal to the axial direction of the stabilizer 2 (FIG. 6C). It can be seen that the displacement prevention member can withstand a larger lateral displacement load when formed in parallel with the direction (FIG. 6B). And since the slip prevention member has a plurality of holes 16 (FIG. 6 (a)), the lateral slip is larger than that of the slip prevention member (FIG. 6 (b)) that has the same shape but does not have the holes 16. It can be seen that it can withstand the load.

  From the above experiment, the convex portion and the concave portion of the member are arranged on the side extending in the direction orthogonal to the axial direction of the stabilizer 2 rather than extending in the direction orthogonal to the axial direction of the stabilizer 2 (displacement preventing member 20). It can be seen that the one formed in parallel with the direction (displacement prevention member 6) exhibits a larger lateral displacement prevention load. Here, the “slip prevention member in which the convex portion and the concave portion of the member are formed in a direction extending in a direction perpendicular to the axial direction of the stabilizer 2 in parallel to the axial direction” is, in other words, the above-described contact prevention member. The contact portion S is a displacement prevention member that is parallel to the axial direction of the stabilizer 2.

  The direction in which the contact portion S extends is not necessarily parallel to the axial direction of the stabilizer 2, but a large lateral slip prevention load can be obtained by making the direction in which the contact portion S extends parallel to the axial direction of the stabilizer 2. It is estimated that can be obtained. This will be specifically described with reference to FIG. FIG. 8 shows three types of slip prevention members. FIG. 8A shows a state in which the deviation preventing member 6 according to the first embodiment is fixed to the stabilizer 2. The abutting portion S is parallel to the axial direction of the stabilizer 2. In other words, the angle A1 (the smaller one of the angles formed by the side 12a of FIG. 2A and the bottom of the recess 13) is a right angle. FIG. 8B shows a state in which the displacement preventing member 6 b in which the contact portion S is oblique with respect to the axial direction is fixed to the stabilizer 2. As shown in FIG. 8B, the angle A2 is an obtuse angle. FIG. 8C shows a state in which the displacement preventing member 6 c whose abutting portion S is oblique with respect to the axial direction is fixed to the stabilizer 2. As shown in FIG. 8C, the angle A3 is an acute angle. Consider the relative magnitude relationship of the respective lateral displacement prevention loads when the same load is applied to the three types of displacement prevention members 6, 6b, 6c shown in FIG.

  The first member and the second member of the shift preventing member slightly extend in the longitudinal direction due to elastic deformation of the steel material when the outer peripheral surface of the stabilizer 2 is caulked by a press. Therefore, when the first member and the second member are fixed to the stabilizer, a restoring force acts on each of the first member and the second member. As a result, a force (restoring force) having the opposite direction and the same magnitude acts on the abutting portion S in a direction orthogonal to the axial direction of the stabilizer. In FIG. 8A, the restoring force F <b> 1 acts on the first member 8 of the deviation preventing member 6, and the restoring force F <b> 2 acts on the second member 10. In FIG. 8B, the restoring force Fb1 acts on the first member 8b of the slip prevention member 6b, and the restoring force Fb2 acts on the second member 10b. In FIG. 8C, the restoring force Fc1 acts on the first member 8c of the shift preventing member 6c, and the restoring force Fc2 acts on the second member 10c. Here, in FIG. 8B, the restoring force Fb1 includes a component Fb1p parallel to the contact portion S, and the restoring force Fb2 includes a component Fb2p parallel to the contact portion S. Those components act in the direction of separating the first member 8b and the second member 10b. On the other hand, in FIG. 8A, since the restoring forces F1 and F2 are orthogonal to the contact portion S, the force component in the direction separating the first member 8 and the second member 10 is zero. Therefore, it is estimated that the slip prevention member 6 has a relatively large lateral slip prevention load compared to the slip prevention member 6b. On the other hand, A3 has an acute angle in the shift preventing member 6c in FIG. That is, the longer side (hereinafter referred to as the lower base) of the longitudinal sides of the first member 8c and the lower bottom of the second member 10c are lower than the lower bases of the other two members of the displacement prevention member. Is also relatively long. Therefore, it is considered that the elastic deformation amount of the slip prevention member 6c is small, and the restoring forces Fc1 and Fc2 acting on the slip prevention member 6c are smaller than the restoring forces acting on the other two slip prevention members. However, the displacement preventing member 6c has a longer overall length in consideration of the assemblability, but the mold and the load for fixing each displacement preventing member to the stabilizer 2 are actually the same. It is estimated that the displacement preventing member 6c has a slightly lower caulking strength than the other two displacement preventing members, and the lateral displacement preventing load is minimized. Therefore, it is estimated that a large lateral displacement prevention load can be obtained by making the direction in which the contact portion S extends parallel to the axial direction of the stabilizer 2. 8B and 8C, the slip prevention member 6b and the slip prevention member 6c have a lateral displacement prevention load that is lower than the lateral displacement prevention load of the displacement prevention member 6. It is considered that the load does not decrease as much as the lateral slip prevention load in FIG. That is, the slip prevention member has the largest lateral slip prevention load when the convex portions and the concave portions of the first member and the second member are formed on the side perpendicular to the axial direction of the stabilizer 2 in parallel to the axial direction. Although it is shown, if it is formed on a side perpendicular to the axial direction, it is considered that even if the convex and concave portions do not extend in parallel to the axial direction, it can withstand a larger lateral displacement load compared to the conventional case.

  The advantage of the slip prevention member 6 in the present embodiment will be described. As described with reference to FIG. 5, the maximum diameter GD2 of the slip prevention member 6 is much smaller than the maximum diameter GD1 of the ring member 18. When the ring member 18 is used as a slip prevention member, a surplus portion during caulking may protrude and interfere with other parts of the vehicle body, and the degree of freedom in layout is limited, but the slip prevention member 6 According to the structure, such a problem does not occur. In other words, the maximum diameter GD2 of the deviation preventing member 6 can be made substantially the same as the outer diameter of the stabilizer 2, and an increase in the size of the deviation preventing member 6 can be suppressed. Thereby, in the slip prevention member 6, since a protrusion does not arise like the ring member 18, weight reduction and reduction of material cost are realizable. Furthermore, since the slip prevention member 6 is divided into two semi-annular members 8 and 10, it can be directly fixed at a desired position of the stabilizer 2 and the assembly can be automated.

  Further, as described with reference to FIGS. 6 and 7, the slip prevention member 22 has the convex portions 12 and 15 and the concave portions 13 and 14 formed at the end portions of the two semi-annular members 8 and 10. Compared with the displacement prevention member 20, it exhibits a greater load resistance. Further, the slip prevention member 6 having a plurality of holes 16 has low rigidity compared to the slip prevention member 22 having no holes 16, and the holes 16 are deformed when caulked, so that the stabilizer 2 which is a fixed surface is fixed. Contact pressure with the outer peripheral surface increases. For this reason, the slip prevention member 6 exhibits a higher load resistance and at the same time forms the hole 16 without providing artificial irregularities on its inner peripheral surface as in the technique disclosed in Patent Document 1. It is also possible to reduce the weight of the slip prevention member.

  (Embodiment 2) The first member 8 and the second member 10 of the displacement preventing member 6 according to Embodiment 1 have a bilaterally symmetric shape with a line that bisects the sides in the longitudinal direction as two halves. However, the shape of the first member and the second member is not limited to such a shape. An example is shown in FIG. FIG. 9 shows the first member 8d and the second member 10d used in this embodiment. Since the material and dimensions of each member are the same as those of the displacement prevention member 6 in the first embodiment, description thereof is omitted. A convex portion 12d and a concave portion 13d adjacent to the convex portion 12d are formed at one end in the longitudinal direction of the first member 8d. On the other hand, at the other end portion in the longitudinal direction of the first member 8d, a convex portion 12e is formed on the side opposite to the side where the convex portion 12d is formed, in a direction opposite to the direction in which the convex portion 12d extends. ing. A concave portion 13e is formed adjacent to the convex portion 12e. A plurality of holes 16 are formed in the center of the first member 8d. The plurality of holes 16 are arranged at equal intervals in the x-axis direction of the first member 8d. Since the second member 10d has the same configuration (dimensions) as the first member 8d, description thereof is omitted.

  Next, how the first member 8d and the second member 10d are fixed to the stabilizer 2 will be described. The first member 8d and the second member 10d are first bent so as to follow the shape of the outer peripheral surface of the stabilizer 2, and are formed into a semi-annular shape. Subsequently, the first member 8d and the second member 10d include a convex portion 12d and a concave portion 13d formed at one end portion of the first member 8d, and a concave portion 14d and a convex portion 15d formed at one end portion of the second member 10d. Are arranged in the stabilizer 2 so as to face each other. At this time, the convex part 12e and the recessed part 13e formed in the other end part of the 1st member 8d which are not illustrated, and the recessed part 14e and convex part 15e which were formed in the other end part of the 2nd member 10d are also facing. . The first member 8d and the second member 10d are respectively slid so as to approach each other on the stabilizer 2, and at one end portion of each member, the convex portion 12d and the concave portion 14d, and the concave portion 13d and the convex portion 15d are provided at the other end. In the portion, the convex portion 12e and the concave portion 14e, and the concave portion 13e and the convex portion 15e are fitted. In this state, the first member 8d and the second member 10d are annularly pressed and fixed to the outer peripheral surface of the stabilizer 2 by caulking from the outside in the radial direction of the stabilizer 2 toward the center. The deviation preventing member having such a configuration has the same advantages as the deviation preventing member 6 of the first embodiment. That is, it is possible to suitably prevent the first member 8d and the second member 10d from being separated by an external force.

  As mentioned above, although the Example of the technique which this specification discloses was described in detail, this is only an illustration and the deviation prevention member which this specification discloses is what variously modified and changed said Example. included. For example, in Example 1, the slip prevention member 6 is fixed at two locations on the stabilizer 2, but the number of locations to be fixed may be three or more. Moreover, when restrict | regulating that a bar will shift | deviate to a certain one direction, the location where a slip prevention member is fixed may be one location. Further, the number of holes formed in the first member and the second member need not be the same. The spacing between the holes may not be uniform. Moreover, the shape of the two members included in the shift prevention member is not limited to a semi-annular shape. For example, the shape may be a circular arc, an elliptical arc, or a shape that forms part of the outer periphery of a polygon. Further, the concave portion may be formed slightly larger than the convex portion. That is, when the first member and the second member are fitted, a clearance may be formed between the convex portion and the concave portion.

  Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above. The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

2: Stabilizer 3: Rubber bushing 4: Bracket 6: Deviation prevention member 8: First member 10: Second member 12, 15: Convex portion 13, 14: Concavity 16: Hole 18: Ring member 20: Deviation prevention member 22: Misalignment prevention member

Claims (5)

A slip prevention member that is fixed to at least one portion of the bar and prevents the axial shift of the bar,
The slip prevention member has a first member and a second member in which a substantially rectangular steel material is semi-annular,
The first member and the second member have an annular shape in which one end of the first member and one end of the second member are fixed and the other end of the first member and the other end of the second member are fixed. It is configured to be fixed to the outer peripheral surface of the bar,
Each of one end and the other end of the first member has a convex portion formed on a side extending in a direction orthogonal to the axial direction of the bar when the first member is viewed in plan view.
Each of the end portions of the second member fixed to the end portion where the convex portion of the first member is formed protrudes to a side extending in a direction orthogonal to the axial direction of the bar when the second member is viewed in plan view. A slip prevention member characterized in that a recess for fitting with the part is formed.   The shift preventing member according to claim 1, wherein a plurality of holes are formed in the first member and the second member.   Of the portions where the convex portions and the concave portions are fitted, when the central portions in the circumferential direction of the first member and the second member are pulled outward in the radial direction, the first member and the first member that are annular The part which a 2 member mutually contact | abuts is parallel with respect to the axial direction of a bar, The slip prevention member of Claim 1 or 2 characterized by the above-mentioned.   The slip prevention member according to any one of claims 1 to 3, wherein the slip prevention member is used for a stabilizer of a vehicle suspension.   A bar to which the slip prevention member according to any one of claims 1 to 4 is fixed.

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