EP4041577A2 - Control arm used in independent suspension - Google Patents

Control arm used in independent suspension

Info

Publication number
EP4041577A2
EP4041577A2 EP20875010.9A EP20875010A EP4041577A2 EP 4041577 A2 EP4041577 A2 EP 4041577A2 EP 20875010 A EP20875010 A EP 20875010A EP 4041577 A2 EP4041577 A2 EP 4041577A2
Authority
EP
European Patent Office
Prior art keywords
sheet
control arm
flange pipe
upper sheet
lower sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20875010.9A
Other languages
German (de)
French (fr)
Other versions
EP4041577A4 (en
Inventor
Onur AKYEL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Coskunoez Kalip Makina Sanayi Ve Ticaret AS
Original Assignee
Coskunoez Kalip Makina Sanayi Ve Ticaret AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Coskunoez Kalip Makina Sanayi Ve Ticaret AS filed Critical Coskunoez Kalip Makina Sanayi Ve Ticaret AS
Publication of EP4041577A2 publication Critical patent/EP4041577A2/en
Publication of EP4041577A4 publication Critical patent/EP4041577A4/en
Withdrawn legal-status Critical Current

Links

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.

Landscapes

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

Abstract

The invention relates to control arm (100) of enhanced strength developed for use in independent suspension in automotive sector. Characterized in said control arm (100) comprising 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 sheer 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).

Description

CONTROL ARM USED IN INDEPENDENT SUSPENSION
DESCRIPTION
Technical Field
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.
Present State of the Art
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.
Although types of suspension vary depending on type of vehicles, there are mainly two types of suspension system, namely, fixed axis and independent. 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. However, Since tires are too moving in such systems and are not interconnected, their strength against lateral forces is less and wearing is easier. It is complicated and its cost is high because of high number of parts. Control arm system with appropriate geometry in front suspension systems enables tire connected to it to have proper movement. Because free suspension system offers perfect driving and comfort, most of automobiles have as front suspended system while some have as rear suspended system.
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. In general, 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. Vertical forces that vehicle is exposed to are compensated by spiral springs, damper, damper tower, tire wedges while longitudinal forces are compensated by tightening rods and bushings and lateral forces by control arm and bushings. 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. In addition, 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. There is a space between hole and pipe located therein in the control arm design. Since control arm is a moving part, space in this section constantly changes. This space vary in practice since it is produced in tolerance in production. Therefore, nominal space in design is desired to be minimum 5mm. The restrictions in control arm design causes problematic designs in terms of manufacturability and production and process costs increases. Having constant slot place and sizes provided for tightening operation in said control arms and welding pipe therein causes too thin wall thickness in lower and upper sheet of control arm . Such sections causes lack of strength in control arm . The areas resulting in thin wall thickness may have difficulties related to forming and form cost increases. In thin sections which are critical, welding cannot be made in such sections because of no place for welding and lack of strength in such areas are encountered.
Several studies have been made to increase strengthof control arm . One of them is the invention disclosed under patent numbered TR201801836 and entitled “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.
As a result, the need for control arm developed for use in independent suspension eliminating the disadvantages available in the related art and inadequacy of existing solutions has necessitated development in the related art.
Brief Description of the Invention
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.
From background of the related art, 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.
The structural and characteristics features of the invention and all advantages will be understood better in detailed descriptions with the figures given below and with reference to the figures, and therefore, the assessment should be made taking into account the said figures and detailed explanations.
Brief Description of Figures In order to make the embodiment and additional members being subject of the present invention as well as the advantages clearer for better understanding, it should be assessed with reference to the fallowing described figures.
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.
Reference Numbers
100. Control arm
110. Upper sheet
111. Upper sheet slots
112. Upper sheet broadening area
120. Lower sheet
121 . Lower sheet slots
122. Lower sheet broadening area 130. Ball joint
140. Bushing
150. Flange pipe
160. Flangeless pipe
Detailed Description of the Invention
In this detailed description, 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. Then 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.
Particularly, 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). 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. In the current methods used today, 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. At the same time other bushing (140) and ball joint (130) are welded and thus control arm (110) is given last status.
In the most basic form said 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. Having constant slot place and sizes provided for tightening operation in said control arms and welding flangeless pipe (160) therein causes too thin wall thickness in lower and upper sheet of control arm . Control arm (100) of the invention provides production period solving all problems encountered in related art and provides important advantage in cost.

Claims

1. A control arm (100) with increased strength, developed for use in independent suspension in automotive sector characterized in comprising; flange pipe (150) pressed in a manner flange is formed in upper and lower section, 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).
2. A control arm (100) according to claim 1 characterized in comprising upper sheet (110) forming upper part of control arm (100) having broadened sections for flange pipe (150) shaped thereon joined with flange pipe (150) from upper sheet broadening area (112).
3. A control arm (100) according to claim 1 characterized in comprising lower sheet
(120) forming lower part of control arm (100) having broadened sections for flange pipe (150) shaped thereon joined with flange pipe (150) from lower sheet broadening area (122).
4. A control arm (100) according to claim 1 characterized in comprising upper sheet slots (111) providing joining of flange pipe (150) to upper sheet (110).
5. A control arm (100) according to claim 1 characterized in comprising lower sheet slots
(121) providing joining of flange pipe (150) to lower sheet (120).
6. A production method for control arm (100) used in independent suspensions characterized in comprising of the following steps; forming upper sheet broadening area (112) together with upper sheet (110), forming lower sheet broadening area
(122) together with lower sheet (120), pressing flange pipe (150) upper and lower sections and joining upper sheet (110) and lower sheet (120) from the flange sections.
7. A production method for control arm (100) according to claim 6 characterized in upper sheet (110), lower sheet (120) and flange pipe (150) are combined in welding apparatus after production.
8. A production method for control arm (100) according to claim 6 characterized in lower sheet (120) and upper sheet (110) are mounted after bushing (140), ball joint (130) and flange pipe (150) in welding apparatus are fixed in place according to appropriate distance and tolerances. 9. A production method for control arm (100) according to claim 6 characterized where welding method is gas metal arch welding , upper sheet slots (111) being bored in upper sheet(110) and lower sheet slots (121) on lower sheet (120) and welding being made from such parts.
EP20875010.9A 2019-10-10 2020-08-21 Control arm used in independent suspension Withdrawn EP4041577A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201915588 2019-10-10
PCT/TR2020/050733 WO2021071452A2 (en) 2019-10-10 2020-08-21 Control arm used in independent suspension

Publications (2)

Publication Number Publication Date
EP4041577A2 true EP4041577A2 (en) 2022-08-17
EP4041577A4 EP4041577A4 (en) 2022-12-28

Family

ID=75436772

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20875010.9A Withdrawn EP4041577A4 (en) 2019-10-10 2020-08-21 Control arm used in independent suspension

Country Status (2)

Country Link
EP (1) EP4041577A4 (en)
WO (1) WO2021071452A2 (en)

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50306617D1 (en) * 2002-01-22 2007-04-12 Rempel Stanztechnik Gmbh & Co Construction element, in particular for the steering geometry of road vehicles
ITTO20040321A1 (en) * 2004-05-14 2004-08-14 Ocap Spa SUSPENSION BODIES IN CELLULAR STRUCTURE FOR MOTOR VEHICLES
DE102006013646A1 (en) * 2006-03-24 2007-09-27 Volkswagen Ag Wheel-guiding A-arm for e.g. passenger car, has frame element joined with another frame element with specific distance that is maintained by spacer, where spacer is placed between frame elements to simultaneously fix elements to each other
US20080179305A1 (en) * 2007-01-30 2008-07-31 Haimian Cai Torque arm assembly
KR20120003176U (en) * 2010-10-29 2012-05-09 주식회사 동희산업 Lower arm for vehicle
DE202011000607U1 (en) * 2011-03-17 2012-06-20 Kirchhoff Automotive Deutschland Gmbh Handlebar for a vehicle suspension
KR20150033479A (en) * 2013-09-24 2015-04-01 현대모비스 주식회사 Bush device of lower arm
WO2017116183A2 (en) * 2015-12-30 2017-07-06 주식회사 일진 Hybrid suspension arm
DE102018202307A1 (en) * 2018-02-15 2019-08-22 Ford Global Technologies, Llc Handlebar for a suspension
CN207972495U (en) * 2018-03-05 2018-10-16 广州汽车集团股份有限公司 Control arm and automotive suspension

Also Published As

Publication number Publication date
WO2021071452A3 (en) 2021-05-14
EP4041577A4 (en) 2022-12-28
WO2021071452A2 (en) 2021-04-15

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