Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G7/00—Pivoted suspension arms; Accessories thereof
  • B60G7/001—Suspension arms, e.g. constructional features
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
  • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
  • B60G2206/014—Constructional features of suspension elements, e.g. arms, dampers, springs with reinforcing nerves or branches
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
  • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
  • B60G2206/10—Constructional features of arms
  • B60G2206/122—Constructional features of arms the arm having L-shape
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
  • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
  • B60G2206/80—Manufacturing procedures
  • B60G2206/81—Shaping
  • B60G2206/8102—Shaping by stamping
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
  • B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
  • B60G2206/80—Manufacturing procedures
  • B60G2206/82—Joining
  • B60G2206/8201—Joining by welding

Definitions

• Invention relates to control arm of enhanced strength developed for use in independent suspension in automotive sector.
• Invention particularly relates to a control arm providing gain of a distance in amount of pipe thickness in lower and upper sheet and increasing general strength of control arm by help of flange pipe placed therein, providing thickening of fine wall sections remaining on slot edge and easy production of critical areas in forming, allowing conduct of welding to these sections thanks to broadening of fine way sections and thus eliminating non-continuous welding in such sections and thus improving both life tests and strength.
• Suspension is tire, tire air, spring, damper and connection system connecting a vehicle to tires and allowing relative movement between the two.
• Suspension systems supports road handling and drive quality in proportion.
• Suspension system basically provides a non-space contact between road and tires. Particularly, it absorbs obstacles and shocks on the road and offers comfort in driving.
• Suspension system is also an essential factor for safe driving. It provides balance to vehicle in dynamic conditions such as high speed, sharp turning and prompt braking. Providing connection between chassis and tires, suspensions also prevent deformation that might occur in other components of cars thanks to their flexible structure.
• independent suspension system is used in light commercial vehicles and automobiles. High road handling is provided because tires can rotate independent of each. Independent suspension system also called control arm system prevents drift by means of balanced swinging at bends. In independent suspension system, each tire is supported by an independent arm connected to vehicle body by means of a spring. Therefore, movement of right and left tires up and down, right and left independent of each is provided. Thus movements of body are limited and high directing capability is provided.
• Such type of suspension systems can absorb faults on the road surface effectively and provides perfect driving in respect to easy and comfortable driving. Because of little non-spring mass and keeping down, road grip by tires is very good and vibrations can be absorbed much more.
• Control arms as part of independent suspension system take forces from side and front while enable spring only to support vertical load and keep tires in proper position.
• Control arms are integral with axe carrying, steering wheel system members, balance bar, spring and dampers in suspension systems.
• An upper and a lower control arm is provided perpendicular to length of vehicle for each tire.
• upper control arm comprises one control arm while lower control arm comprises two and is supported by a tightening bar extending along vehicle axis.
• One end of upper control arm is secured to roof of suspension by means of bushing and other end to axle carrier by means of ball joint.
• One end of each of lower control arms is secured to roof of suspension by means of bushings.
• Other ends of arms are secured to axle carrier by means of ball joint and bush.
• Control arm used today comprises a hole in circle form in the centre. Said hole is the section requiring mounting after assembling control arm and cannot be changed due to vehicle design. Therefore, a mounting hole is needed on the control arm to achieve the mounting.
• pipe is welded into slot to increase strength. The pipe causes narrowing in amount corresponding to pipe thickness in lower and upper control arm sheets. This narrowing causes extra strength loss in lower and upper sheet.
• Control arm with increased strengthand a method for production Invention relates to production method for control arm used in suspension systems of vehicles and comprises procedure steps of obtaining blanking sheet by cutting sheet roller band, obtaining crushed blanking sheet containing area of developed crushing by applying sheet crushing method onto blanking sheet, obtaining control arm by shaping crushed developed sheet.
• Present invention relates to a control arm with increased strength, developed to be used in independent suspension in automotive sector and meeting above mentioned needs, eliminating all disadvantages and providing some additional advantages.
• purpose of the invention is to provide gaining a distance in lower and upper sheet in the amount corresponding to pipe thickness thanks to design of the developed control arm .
• Purpose of the invention is to provide increase in general strength of control arm by means of flange pipe placed therein upon gaining distance achieved in lower and upper sheet of control arm .
• Another purpose of the invention is to provide thickening of thin wall parts in slot edges and easier production of critical areas in forming by help of control arm structure.
• a further purpose of the invention is to provide broadening thin wall thickness on control arm and enable welding thereon and thus eliminate non-continued welding and so improvement of both life tests and strength.
• Another purpose of the invention is to provide joining of the upper and lower sheet to shaped pipe from slots bored when performing gas metal arch welding by help of upper and lower sheet slots contained therein.
• a further purpose of the invention is to provide increase in strength of pipe and thus control arm by help of flange pipe obtained by means of compressing pipe contained therein in upper and lower part in a manner to form flange.
• Figure 1 shows schematic view of the demounted status of the control arm .
• Figure 2 is schematic general view of control arm hole wherein pipe is placed between upper and lower sheet.
• Figure 3 is schematic general view of slots formed in upper sheet at control arm hole wherein pipe is placed between upper and lower sheet.
• Figure 4 shows general schematic view of flange pipe.
• Figure 5 is schematic general view of placement of flangeless pipe of prior art into control arm hole.
• control arm (100) of increased strength developed for use in independent suspension in automotive sector disclosed under this invention has been disclosed only as example for the purpose of better understanding of the subject and described in a manner not causing any restrictive effect.
• Control arm (100) shown in figure 1 basically comprises of upper sheet (110), lower sheet (120) and flange pipe (150).
• Said upper sheet (110) forms upper part of control arm (100) and upper sheet broadening area (112) shown in figure 2 having parts broadened for flange pipe (150) shaped thereon joins flange pipe (150) .
• Said lower sheet (120) forms lower part of control arm (100) and lower sheet broadening area (122) having parts broadened for flange pipe (150) shaped thereon joins flange pipe (150).
• Said flange pipe (150) is placed into upper sheet slots (111) shown in figure 3 by means of upper sheet (110) and into lower sheet slots (121) by lower sheet (120) by use of gas metal arc welding.
• Flange pipe (150) shown in figure 4 is pressed in a manner flange is in upper and lower part. Upper sheet (110) and lower sheet (120) are combined over said flange. Strength of flange pipe (150) and therefore control arm (100) is increased thanks to said flange extensions. Ball joint (130) is provided on said control arm (100) for connection of tire. Bushing (140) is used for connection of said control arm (100) to vehicle body. Upper sheet (110) and lower sheet (120) of said control arm (100) are formed together with upper sheet broadening area (112) and lower sheet broadening area (122) where shaped flange pipe (150) is welded.
• flange surfaces of flange pipe (150) are located in a manner to be in upper sheet broadening area (112) and lower sheet broadening area (122). Then all components of control arm (100) are mounted and joined by means of laser welding, gas metal arc welding, adhesives and similar techniques.
• upper sheet (110) formed together with upper sheet broadening area (112), lower sheet (120) formed together with lower sheet broadening area (122), flange pipe (150) of pressed upper and lower sections after production in said control arm (100) are all combined in a welding apparatus.
• Welding apparatus fixes places of bushing (140), ball joint (130) and flange pipe (150) in space according to convenient distance and tolerances and then lower sheet (120) and upper sheet (110) are mounted.
• Properly located upper sheet (110), lower sheet (120) and flange pipe (150) are welded by use of various welding methods (Laser, MIG, TIG, gluing and similar others).
• control arm (100) Where gas metal arch welding is used in manufacture of control arm (100), upper sheet slots (111) are bored in upper sheet (110) and lower sheet slots (121) on lower sheet (120) and welding is made from such parts.
• standard pipe is fixed to lower and upper sheet from outer surfaces by corner welding while in the control arm (100) of the invention, strength increased flange pipe (150) is combined to lower sheet (120) and upper sheet (110) from flange parts.
• other bushing (140) and ball joint (130) are welded and thus control arm (110) is given last status.
• control arm (100) comprises upper sheet (110) pressed in a manner flange is in upper and lower section, flange pipe (150) where upper sheet (110) and lower sheet (120) are combined, upper sheet broadening area (112) formed on upper sheet (110) broadened for flange pipe (150) and providing joining of flange pipe (150) and upper sheet (110), lower sheet broadening area (122) formed on lower sheet (120), broadened for flange pipe (150) and providing joining of flange pipe (150) and lower sheet (120).
• Central part of control arm in use today has a hole in round form where flangeless pipe (160) passes. Said hole is the section requiring mounting after assembling control arm and can not be changed due to vehicle design.
• Control arm (100) of the invention provides production period solving all problems encountered in related art and provides important advantage in cost.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Vehicle Body Suspensions (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=75436772

Family Applications (1)

Country Status (2)

Family Cites Families (10)

• 2020
  • 2020-08-21 WO PCT/TR2020/050733 patent/WO2021071452A2/en unknown
  • 2020-08-21 EP EP20875010.9A patent/EP4041577A4/de not_active Withdrawn

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