JP5111121B2 - Suspension structure - Google Patents

Suspension structure Download PDF

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Publication number
JP5111121B2
JP5111121B2 JP2008003120A JP2008003120A JP5111121B2 JP 5111121 B2 JP5111121 B2 JP 5111121B2 JP 2008003120 A JP2008003120 A JP 2008003120A JP 2008003120 A JP2008003120 A JP 2008003120A JP 5111121 B2 JP5111121 B2 JP 5111121B2
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Prior art keywords
axle
side surface
portion
member
support member
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JP2008003120A
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JP2009161151A (en
Inventor
大治 赤川
浩司 松田
秀利 仲里
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本田技研工業株式会社
株式会社ヨロズ
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Description

  The present invention relates to a suspension structure that supports wheels of a vehicle.

The suspension structure of a vehicle is generally configured by press forming a steel plate, combining the formed plate materials, and welding them together. For this reason, it is very difficult to assemble with high accuracy due to displacement during press molding and thermal distortion during welding.
For this reason, when the wheel support member is attached to the suspension member that holds the spring, it is necessary to perform alignment adjustment, which is the position adjustment of the wheel support member, and fix the suspension.
Therefore, a suspension structure is known in which, when the wheel support member is attached to the suspension member, the end portion of the suspension member and the spindle (axle) support member are machined to achieve predetermined alignment. ing. However, the processing cost increases and workability also deteriorates.
Also, in order to prevent the occurrence of thermal distortion due to welding, a bending flange is formed on the spindle support plate, and the bending flange is welded to the trailing arm, so that it is difficult for welding heat to reach the main body of the spindle support plate. The structure is taken (for example, refer to Patent Document 1).
Further, the second end plate provided with the through hole is welded to the end portion of the torsion beam, and the first end plate provided with the spindle through hole is provided on the inner peripheral portion of the spindle through hole. The structure which has the boss | hub part fitted to the through-hole of an end plate is disclosed (for example, refer patent document 2).
JP 2004-42690A (8th page, FIG. 4) Japanese Utility Model Publication No. 7-37719 (page 3, FIG. 6)

  However, in the suspension of Patent Document 1, in order to form the bending flange on the spindle support plate, it is necessary to reduce the thickness of the spindle support plate, and it is necessary to ensure the support rigidity of the spindle only with the thin spindle support plate. There is a problem that is difficult.

  In the suspension of Patent Document 2, since the first end plate has a portion extending radially outward from the boss portion, the fitting state (the longitudinal direction of the boss portion) between the boss portion and the second end plate is temporarily adjusted. Even if it is going to do, since the extended part will contact the surface of the 2nd end plate on the vehicle outer side, there is a problem that it is difficult to perform alignment adjustment because the adjustment width is small.

  The present invention has been made in view of the above-described circumstances. The suspension arm member of the axle support portion including the axle is ensured by securing the axle support strength only by the axle support portion, ensuring a wide adjustment range of the axle alignment. It is easy to adjust the adjustment range of the axle alignment, improve the axle assembly accuracy, increase the axle mounting strength, improve the axle assembly workability, and improve the axle assembly workability. It is an object to provide an improved suspension structure.

According to the first aspect of the present invention, the axle that rotatably supports the left and right wheels of the vehicle, the axle support member that supports the axle, and one end to which the axle support member is fixed can be moved up and down. A suspension arm member coupled to the vehicle body, wherein a suspension opening is formed at one end of the suspension arm member, and the axle support member is a plate member fitted into the fitting opening. A flat outer surface facing the outside, a flat inner surface facing the outer surface and facing the inside of the vehicle, and a fitting hole that is opened through the center of the outer surface and press-fits the axle And an outer edge portion connected to the inner surface and the outer surface, and the outer edge portion extends so that the first side surface portion fitted in the fitting opening and the first side surface portion can be fitted to the outside of the vehicle. And the remaining second side surface portion not fitted and Thickness of the member is made of the length of the length and the second side surface portion of the first side portion, second side portion, characterized in that it is welded with a bead fixed to the fitting opening.

In the invention according to claim 2 , the axle support member is a plate member, a fitting hole for fitting the axle is formed in the center of the plate member, and the axle is a fixed end supported by the fitting hole. And a retaining flange portion that is in contact with the inner surface of the axle support member facing inward of the vehicle.

In the invention according to claim 1, a fitting opening is formed at one end of the suspension arm member, and the axle support member is a plate member that fits into the fitting opening , and is a flat outside facing the outside of the vehicle. A side inner surface, a flat inner surface facing the outer surface facing the inner side of the vehicle, a fitting hole penetrating through the center of the outer surface and press-fitting the axle, and connected to the inner surface and the outer surface and the outer edge portion made of, since they are fixed by fitting the fitting opening, in order to secure the outer edge portion of the axle support portion to the suspension arm member, for example, need to be molded and bent flange at plastic working Therefore, there is an advantage that the thickness (outer edge portion) of the axle support portion can be increased, and the axle support strength can be secured only by the axle support portion.

  In addition, the mounting position of the axle support portion can be freely adjusted within the range of the outer edge portion where the outer edge portion of the axle support portion can be fitted to the fitting opening at one end of the suspension arm member. On the other hand, it is possible to secure a wide adjustment range for alignment of the left and right axles.

  Further, when the axle support portion is fitted and fixed to the fitting opening of the suspension arm member, the axle is also fixed at the same time. For example, it is not necessary to fix the center and the end of the axle, and the axle support portion is attached. Since no new welding work is required, it is easy to attach the axle support portion including the axle to the suspension arm member, improving workability and reducing production costs.

In the invention according to claim 1 , the outer edge portion is not fitted to the first side surface portion fitted to the fitting opening and the first side surface portion so as to be fitted to the outside of the vehicle. Since the outer edge portion of the axle support portion has a thickness that can be fitted, the adjustment margin that can shift the fitting state becomes large. There is an advantage that it is easy to adjust the alignment adjustment range (adjustment allowance).

In the invention according to claim 1 , the axle support member is a plate member, the plate thickness of the plate member is composed of the length of the first side surface portion and the length of the second side surface portion, and the second side surface portion is welded with a bead. , since the fitting hole that press-fitting the axle in the center of the plate member is opened, since the axle support portion has a thickness capable fitting, fixing the axle simply by press-fitting the axle in the axle support portion Thus, there are advantages that the axle assembly accuracy can be increased and the mounting strength of the axle can be increased.

Also, the axle support member is a plate member, and the outer edge of the axle support part is thick enough to fit, so the axle can be fixed simply by press-fitting the axle into the axle support part, and the axle assembly work Sexuality is improved.

In the invention according to claim 2 , the axle support member is a plate member, a fitting hole for fitting the axle is formed in the center of the plate member, and the axle is a fixed end supported by the fitting hole. In addition to this, it is provided with a retaining flange that is in contact with the inner surface of the axle support member facing the inside of the vehicle, so that the axle can be prevented from falling off by forming the retaining portion. This can be prevented, and it is not necessary to press the axle into the axle support portion with an unnecessarily high pressure. Therefore, there is an advantage that the workability of assembling the axle improves.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings.
FIG. 1 is a perspective view showing the relationship between the suspension structure of the present invention and wheels.
FIG. 2 is a perspective view of the suspension structure of the present invention.
FIG. 3 is a plan view of the suspension structure of the present invention.

  The suspension structure 11 is employed in the rear portion of the vehicle 12, and includes a single cross beam 13 extending in the left and right direction (X-axis direction) of the vehicle 12, a suspension arm member 14 fixed to both ends of the cross beam 13, and a suspension arm. An axle connecting portion 16 provided between the member 14 and the wheel 15.

  In the suspension structure 11, a cross beam 13 extending in the left and right (X-axis direction) is connected to the center of the left and right suspension arm members 14. A spring 22 and a shock absorber 23 are disposed at one end 21 of the suspension arm member 14. The other end 24 of the member 14 is connected to the underbody 27 of the vehicle body 26 via the connecting member 25, and the one end 21 moves up and down (Z-axis direction) with the other end (fulcrum portion) 24 as a fulcrum. The suspension structure 11 is symmetric with respect to the symmetry axis C.

The cross beam 13 is a beam material in which a steel plate is formed into a substantially V-shaped groove, and weld open tips 31 are formed at both ends and welded to the suspension arm member 14 with a first bead (not shown). Yes.
The suspension arm member 14 has a second bead 34 (see FIG. 5, including other than the illustration) including the edge of the first half member 32 and the edge of the second half member 33, which are formed on the upper side by forming a steel plate into a substantially groove shape. Welded with.

FIG. 4 is a detailed view of part 4 of FIG.
FIG. 5 is a view taken in the direction of arrow 5 in FIG. FIG. 6 is a view taken in the direction of arrow 6 in FIG. FIG. 7 is a view taken in the direction of arrow 7 in FIG. 1 to 3 will be used in combination.

The suspension arm member 14 is also configured to open the first outer wall portion 37 of the first half member 32 disposed on the suspension arm member 14 so as to form the fitting opening 36 toward the outside of the vehicle 12 (in the direction of the arrow a1). The first opening groove portion 41 and the second opening groove portion 42 are formed, and an axial position adjusting recess 43 is formed between the first opening groove portion 41 and the second opening groove portion 42. . A third opening groove 45 is formed so as to open the second outer wall 44 of the second half member 33 disposed below. The shaft position adjusting recess 43 is formed so as to prevent interference with the axle support member 48 to which the axle 47 is fixed when adjusting the position of the axle 47.
The axle support member 48 is fitted into the fitting opening 36 and is included in the axle connecting portion 16.

  When the axle connecting portion 16 is mainly used, the axle connecting portion 16 is fixed to the fitting opening 36 formed in the suspension arm member 14, the axle supporting member 48 fixed to the fitting opening 36, and the axle supporting member 48. And an axle 47.

  Specifically, the axle support member 48 is welded to the first opening groove 41 of the fitting opening 36 with the third bead 51, and the axle support member 48 is connected to the second opening groove 42 of the fitting opening 36. Is welded with the fourth bead 52, and the axle support member 48 is welded to the third opening groove 45 with the fifth bead 53. Further, the axle 47 is integrally fitted in the center of the axle support member 48.

8 is a cross-sectional view taken along line 8-8 in FIG.
9 is a cross-sectional view taken along line 9-9 of FIG. 10 is a cross-sectional view taken along line 10-10 of FIG. 11 is a cross-sectional view taken along line 11-11 of FIG. This will be described with reference to FIG.

  The axle support member 48 is a plate member processed (chamfered) from a thick steel plate, and has a flat outer surface 56 facing the outer side of the vehicle 12 and an inner side of the vehicle 12 (indicated by an arrow a2). A flat inner side surface 57 facing in the direction), a fitting hole 61 opened in the center of the outer side surface 56 and penetrating the inner side surface 57, and an outer edge portion 62 connected to the inner side surface 57 and the outer side surface 56. .

  The outer edge portion 62 has a thickness t that is the length T (T = t) of the outer edge portion 62, and a portion (range) fitted to the fitting opening 36 is defined as the first side face portion 64. The portion (range) that is not present is the second side surface portion 65. In this example, the length of the first side surface portion 64 is T1, and the length of the second side surface portion 65 is T2 (T2 = T−T1).

In other words, the outer edge portion 62 includes the fitted first side surface portion 64 and the remaining second side surface portion 65 that extends from the first side surface portion 64 to the outside of the vehicle 12 and is not fitted.
That is, the 1st side part 64 is a site | part which becomes settled when it adjusts on the basis of the axle shaft 47, and may include the adjustment allowance.

  On the second side surface portion 65, a third bead 51, a fourth bead 52, and a fifth bead 53 are formed for a predetermined leg length Wk. It is desirable that the length T2 of the second side surface portion 65 exceeds the leg length Wk. As a result, the adjustment allowance ranges from the minimum position to the maximum position (T-Wk).

  “The second side surface portion 65 is welded with a bead” means that the leg length Wk matches the length T2 of the second side surface portion 65 and the third bead 51, the fourth bead 52, As shown in FIGS. 8 and 11, when the 5 beads 53 are applied, the leg length Wk is smaller than the length T2 of the second side surface portion 65, and a part of the second side surface portion 65 (for example, 50%). This is both the case where the third bead 51, the fourth bead 52, and the fifth bead 53 are applied.

The second side surface portion 65 is a part that is determined when the axle 47 fitted in the fitting hole 61 is adjusted as a reference.
The fitting hole 61 is ground to an inner diameter (including a tolerance) that becomes a “fitting fit” or “intermediate fit”.

The axle 47 forms a fixed end 67 that is fitted through the fitting hole 61 of the axle support member 48, and is a bearing 68 (see FIG. 3) that is connected to the fixed end 67 and rotatably supports the wheel 15. Is formed, a threaded portion 72 is formed continuously with the bearing shaft portion 71, and a retaining flange portion 73 is abutted against the inner side surface 57 of the axle support member 48 with the fixed end 67. The retaining flange portion 73 is welded to the inner side surface 57 by a sixth bead 74.
The fixed end 67 has an outer diameter (including tolerance) that becomes a “fitting fit” or “intermediate fit”.

  In addition, although the fixed end 67 and the fitting hole 61 have the diameters of “fitting fit” or “intermediate fit”, the respective diameters may be the diameter of “clear fit”.

Next, an example of the manufacturing procedure of the suspension structure 11 will be briefly described.
FIG. 12 is an exploded view of the suspension structure. This will be described with reference to FIGS.
First, the suspension arm member 14 is assembled. By setting the first half member 32 and the second half member 33 on a suspension arm jig not shown in the drawing, the fitting opening 36 is held at a predetermined size, and the edges are second bead 34. Weld with. After being removed from the suspension arm jig, it is attached to the cross beam 13.

The axle support member 48 is formed in advance. After removing the plate from the thick plate, it is set on the NC machine tool, and in particular, the outer edge 62, the inner side surface 57, the fitting hole 61 and others are finished. The fitting hole 61 is finished with an inner diameter (including tolerance) that becomes a “fitting fit”.
An axle 47 is formed in advance. After the desired tempering, it is set on the NC machine tool, and the fixed end 67, the retaining flange 73 and others are finished. The fixed end 67 is finished with an outer diameter (including tolerance) to be a “fit fit”, and the retaining flange portion 73 is finished with a predetermined squareness.

  Next, the axle 47 is fitted into the fitting hole 61 of the axle support member 48 as indicated by an arrow a3 and welded. First, in the “seam fitting”, the axle support member 48 is heated to a predetermined temperature and maintained at a predetermined temperature, and then the fixing end 67 is fitted into the fitting hole 61 to prevent the retaining flange portion 73 from being attached to the inner surface 57. Assemble with “Fitting”. Subsequently, the inner side surface 57 is directed upward and the retaining flange portion 73 is welded downward, so that the sixth bead 74 is integrally fixed as a result.

  Finally, the axle support member 48 is attached to the suspension arm member 14. The suspension arm member 14 joined to the cross beam 13 is set on a jig, and an axle support member 48 having an axle 47 fixed to the left and right fitting openings 36 is temporarily fitted as indicated by an arrow a4. Subsequently, by finely adjusting the position of the bearing shaft portion 71 of the axle 47 in the X-axis direction (vehicle width direction), the position in the X-axis direction (more precisely, the three-axis direction) is determined. At that time, the outer edge 62 of the axle support member 48 is adjusted by taking it into and out of the fitting opening 36, and after the determination, the axle 47 is restrained by a restraining jig. And it welds with the 3rd bead 51, the 4th bead 52, and the 5th bead 53 by downward welding.

Thus, in the suspension structure 11, the axle support member 48 to which the axle 47 is fixed is fitted to the suspension arm member 14, and the position of the axle 47 can be adjusted by adjusting the axle support member 48. Accordingly, a wide adjustment range of the alignment of the axle 47 can be secured.
“Alignment” refers to the positional relationship of the left and right axles 47 in the X-axis direction, Y-axis direction, and Z-axis direction with respect to the center of the vehicle 12 (X-axis, Y-axis, and Z-axis centers).

Next, the operation of the suspension structure of the present invention will be described with reference to FIGS.
In the suspension structure 11, the axle connecting portion 16 forms a fitting opening 36 in the suspension arm member 14, and a plate-like axle support member 48 is fitted into the fitting opening 36, and welding (third bead 51, Since the fourth bead 52 and the fifth bead 53 are integrally joined, for example, in order to fix the axle support portion to the suspension arm, it is not necessary to form a bending flange or the like in the axle support portion by plastic working. Therefore, the plate thickness of the axle support member 48 can be provided with a thickness necessary for ensuring the strength, and the strength for supporting the axle 47 can be ensured only by the axle support member 48.

  Further, since the axle support member 48 is provided with the length T of the outer edge portion 62 that coincides with the plate thickness t, a range in which the axle support member 48 can be fitted into the fitting opening 36 of the suspension arm member 14 (T -Wk), the mounting position (X-axis direction) of the axle support member 48 can be freely adjusted, and a wide adjustment range of alignment can be secured.

  Further, when the axle support member 48 is fitted and fixed to the fitting opening 36 of the suspension arm member 14, the axle 47 is also fixed at the same time, so there is no need to fix the center and the end of the axle, for example. Since no new welding work is required for attachment, it is easy to attach the axle support member 48 including the axle 47 to the suspension arm member 14, thereby improving workability and reducing production costs. .

  As shown in FIGS. 8 and 11, the axle support member 48 flattens the first side surface portion 64 fitted to the fitting opening 36 and the remaining second side surface portion 65 not fitted. Since they are formed in series, if the length T2 of the second side surface portion 65 is set to be long, the adjustment allowance for adjusting the fitting length (the length T1 of the first side surface portion 64) increases. It becomes easy to adjust the adjustment range (adjustment allowance) of the alignment of the axle 47.

  The axle support member 48 is a plate member, and since the fitting hole 61 into which the axle 47 is press-fitted is formed in the center of the plate member, the axle support member 48 has a thickness so that the length of the fitting hole 61 is increased. The axle 47 can be fixed simply by press-fitting the axle 47 into the axle support member 48 (fitting hole 61), and the assembly accuracy (perpendicularity) of the axle 47 can be increased. The mounting strength can be increased.

  The axle support member 48 is a plate member, and since the axle support member 48 has a thickness, the axle 47 can be fixed simply by press-fitting the axle 47 into the axle support member 48, and the assembly workability of the axle 47 is good. Become.

  The axle 47 includes a retaining flange portion 73 that is connected to a fixed end 67 supported by the axle support member 48 and is in contact with the inner surface 57 of the axle support member 48. Even if fitted, the axle 47 can be reliably prevented from coming off, and it is not necessary to press the axle 47 into the axle support member 48 with a pressure higher than necessary, thereby improving workability.

Next, a reference example will be described.
13 is a reference example diagram and corresponds to FIG. The same components as those in the embodiment shown in FIGS. 1 to 12 are given the same reference numerals and the description thereof is omitted.

The suspension structure 11B of the reference example includes an axle connection portion 16B, and the axle connection portion 16B is characterized by integrally forming an axle support member 48B on the axle 47B.

The suspension structure 11B of the reference example exhibits the same operations and effects as the suspension structure 11.
Further, in the suspension structure 11B of the reference example , the axle support member 48B and the axle 47B are integrally formed, so that the axle 47 of the divided suspension structure 11 is press-fitted into the axle support member 48 compared to the divided structure. No work is required, and the assembly of the suspension structure 11B is facilitated.
Further, it is possible to reliably prevent the axle 47B from falling off.

  The axle support member 48 is formed in a substantially rectangular shape when viewed from the front shown in FIG.

  The suspension structure of the present invention is suitable for the rear suspension of a vehicle (FF vehicle).

It is a perspective view which shows the relationship between the suspension structure of this invention, and a wheel. It is a perspective view of the suspension structure of this invention. It is a top view of the suspension structure of this invention. FIG. 4 is a detailed view of part 4 of FIG. 3. FIG. 5 is a view taken in the direction of arrow 5 in FIG. 4. FIG. 6 is a view taken along arrow 6 in FIG. 5. FIG. 7 is a view taken in the direction of arrow 7 in FIG. 5. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 5. FIG. 9 is a sectional view taken along line 9-9 in FIG. 5. FIG. 10 is a sectional view taken along line 10-10 in FIG. 9; FIG. 11 is a cross-sectional view taken along line 11-11 in FIG. 5. It is an exploded view of a suspension structure. It is a reference example figure.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Suspension structure, 12 ... Vehicle, 14 ... Suspension arm member, 15 ... Wheel, 26 ... Vehicle body, 36 ... Fitting opening, 47 ... Axle, 48 ... Axle support member, 51 ... Bead (third bead), 52 ... bead (fourth bead), 53 ... bead (fifth bead), 57 ... inner side surface of axle support member, 61 ... fitting hole, 62 ... outer edge portion, 64 ... first side portion, 65 ... second side portion , 67 ... fixed end, 73 ... retaining flange part.

Claims (2)

  1. An axle that rotatably supports left and right wheels of the vehicle, an axle support member that supports the axle, and one end to which the axle support member is fixed are connected to the vehicle body so that the other end can be moved up and down. In a suspension structure comprising a suspension arm member,
    A fitting opening is formed at one end of the suspension arm member,
    The axle support member is a plate member that fits into the fitting opening , and includes a flat outer surface that faces the outside of the vehicle, and a flat that faces the outer surface and faces the inside of the vehicle. An inner side surface, a fitting hole opened through the center of the outer side surface and press-fitting the axle, and an outer edge portion connected to the inner side surface and the outer side surface,
    The outer edge portion includes a first side surface portion that is fitted in the fitting opening, and a remaining second side surface that extends so that the first side surface portion can be fitted to the outside of the vehicle and is not fitted. And comprising
    The plate thickness of the plate member consists of the length of the first side surface portion and the length of the second side surface portion,
    The suspension structure according to claim 1, wherein the second side surface portion is welded and fixed to the fitting opening .
  2. The axle support member is a plate member, it opened said fitting hole is fitted to the axle in the center of the plate member,
    The axle, that said chosen the fixed end which supports the fitting hole, and a retaining flange portion is brought into contact with the inner surface of the axle supporting member facing the inside of the vehicle suspension structure of claim 1, wherein.
JP2008003120A 2008-01-10 2008-01-10 Suspension structure Active JP5111121B2 (en)

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US7692815B2 (en) 2003-03-20 2010-04-06 Silverbrook Research Pty Ltd Display device configured such that an edge of print media is visible above an upper edge of the device
AU2003901297A0 (en) 2003-03-20 2003-04-03 Silverbrook Research Pty Ltd Systems and apparatus (fpd001)
JP5949482B2 (en) * 2012-11-15 2016-07-06 トヨタ自動車株式会社 Suspension beam and method of manufacturing suspension beam
JP5879415B1 (en) * 2014-10-03 2016-03-08 株式会社エフテック End plate for suspension members

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JPS56102209U (en) * 1980-01-09 1981-08-11
JPH0653445B2 (en) * 1984-08-20 1994-07-20 マツダ株式会社 Automotive Sasupenshiyon'a - No
JP3233549B2 (en) * 1995-04-26 2001-11-26 ダイハツ工業株式会社 Weld fixture
JP2002166716A (en) * 2000-11-29 2002-06-11 Futaba Industrial Co Ltd Torsion beam type suspension
JP4093548B2 (en) * 2002-07-09 2008-06-04 株式会社エフテック Torsion beam suspension
JP4301307B2 (en) * 2007-03-01 2009-07-22 トヨタ自動車株式会社 Torsion beam suspension

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