Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
  • F16C7/02—Constructions of connecting-rods with constant length
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C11/00—Pivots; Pivotal connections
  • F16C11/04—Pivotal connections
  • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
  • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
  • F16C11/0623—Construction or details of the socket member
  • F16C11/0657—Construction or details of the socket member the socket member being mainly made of plastics
• • 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
  • B60G7/00—Pivoted suspension arms; Accessories thereof
  • B60G7/005—Ball joints
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C11/00—Pivots; Pivotal connections
  • F16C11/04—Pivotal connections
  • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
  • F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C11/00—Pivots; Pivotal connections
  • F16C11/04—Pivotal connections
  • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
  • F16C11/0685—Manufacture of ball-joints and parts thereof, e.g. assembly of ball-joints
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C11/00—Pivots; Pivotal connections
  • F16C11/04—Pivotal connections
  • F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
  • F16C11/0695—Mounting of ball-joints, e.g. fixing them to a connecting rod
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60G—VEHICLE SUSPENSION ARRANGEMENTS
  • B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
  • B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
  • B60G2204/416—Ball or spherical joints
• • 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
  • B60G2206/11—Constructional features of arms the arm being a radius or track or torque or steering rod or stabiliser end link
• • 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
  • B60G2206/70—Materials used in suspensions
  • B60G2206/71—Light weight materials
  • B60G2206/7101—Fiber-reinforced plastics [FRP]
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
  • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
  • F16C2326/00—Articles relating to transporting
  • F16C2326/01—Parts of vehicles in general
  • F16C2326/05—Vehicle suspensions, e.g. bearings, pivots or connecting rods used therein

Definitions

• the invention relates to a hybrid component for a chassis of motor vehicles, in particular hybrid pendulum support, consisting of a connecting rod with arranged at both ends profiles ball joints with plastic housings, which are connected by molding with the connecting rod, the ball joints have shaft-like extensions which enclose the connecting rod, and overlap on a shaft of the connecting rod.
• the invention further relates to a method for producing such a hybrid component.
• Such hybrid components are mainly used as pendulum supports or coupling rods in the chassis area of motor vehicles. For example, they connect a stabilizer to the chassis structure. They must absorb tensile, compressive and torsional forces. At the same time they are exposed to pollution, moisture and corrosion from rain, snow and salt water. So far, metal connecting rods are used, at the ends of which metal ball joints are fastened. In particular, the connecting rod has to date been protected against corrosion, which made their production more expensive.
• a hybrid component of the type mentioned is known.
• a metal connecting rod is encased by molding of coupling parts with shaft-like extensions made of plastic. Since first one side of the connecting rod is sheathed, a moisture-tight sealing of the seam between the two ends of the shaft-like extensions in the production of the second coupling part with its shaft-like extension a cover at the interface must be created.
• the connecting rod has at its two ends a first profiling and for the absorption of tensile forces a second profiling.
• Such a construction of a hybrid handlebar does not ensure sufficient sealing of the connecting rod over its lifetime.
• a torsion assurance is achieved solely by the end profiling of the connecting rod.
• a profiling is arranged in the overlapping region of the shaft-like extensions on their facing surfaces.
• the security against torsion is significantly increased, because it can be achieved once on the profiling of the connecting rod and then on the coverage area of the two shaft-like extensions of the ball joints, ie the components in which the torsional forces are introduced immediately.
• the torsional strength is increased in hybrid arms, in which the connection points of the two coupling parts are rotated with their other components against each other.
• the developments of the invention according to claims 2 to 5 describe suitable profiles in the covering area, which prevent torsion.
• the end portion of the shaft-like extension polygonal for example, hexagonal
• depressions and surveys can be formed, which are then encapsulated in the production of the end portion of the second shaft-like extension.
• Another possibility of a twist-proof connection is to provide grooves on the outer circumference in the end region of the shaft-like extension first produced. These run axially parallel, transverse to the longitudinal axis of the shaft-like extension or as thread grooves with the same, different or opposite threads. In this then engage the ribs of the ball joint subsequently produced and thus interlock.
• the two end regions in addition to the profiling described in the claims 2 to 5 for preventing rotation nor a profiling according to the embodiment of the claims 6 to 8.
• a wave contour or a thread contour or a plurality of inclined planes can additionally be formed on its outer circumference.
• such embodiments may be used for sealing in the other embodiments for torsional safety.
• the shaft-like extension of the coupling part first produced in the region of profiling has a step in the sense of a cross-sectional reduction.
• the height of the step thus formed preferably corresponds to the thickness of the end region of the second shaft-like extension, so that the outer circumference of the connecting rod can be configured without a shoulder.
• the profiling according to the invention it has been found in the profiling according to the invention to be advantageous if the known per se profiling of the connecting rod is designed so that at its two outer end portions each have a spur toothing is provided which serves to prevent rotation. Then the inner end of the profiling can serve to absorb the tensile forces. For this purpose, it may advantageously consist of individual grooves analogous to a labyrinth seal.
• a method for producing a hybrid component according to the invention is characterized in that after inserting the connecting rod in a plastic injection molding tool, the connecting rod is sealed on its circumference, then injected at least part of the ball joint with its shaft-like extension and a profiling in its end with the shaft-like extension extending to the seal, then the seal is removed and the circumference of the just made shaft-like extension outside the profiling is sealed and finally at least a part of the second ball joint is splattered with its shaft-like extension.
• the first seal is designed so that it can fulfill its task even with non-round profiles.
• the first seal is preferably provided at a location of the connecting rod, which allows an encapsulation over the center of the shaft of the connecting rod. It can also be connected directly to the profiling of the connecting rod, which must remain free in the first Spritzgsvorgang. With this, even smaller designs of hybrid components can be produced.
• the second seal is then applied to the shaft-like extension of the first manufactured ball joint immediately outside its profiling. Since the contour in this area is usually round, the sealing here is easy to accomplish.
• the second ball element is then manufactured with its shaft-like extension up to this second seal by injection molding, so that the profiling of the first shaft-like extension is covered in one operation.
• a ball joint may be provided, the ball joint housing is produced in the two injection molding operations. The metal ball pin is then mounted anschnetend.
• FIG. 1 is a perspective view of a hybrid handlebar with ball joints as coupling parts
• FIG. 2 shows a longitudinal section through the hybrid link according to FIG. 1
• Fig. 3 is a perspective view of a ball joint housing with
• FIG. 5 is a side view of a round metal connecting rod with inclined planes at both ends
• 6a to 6d show four individual process steps for producing the hybrid link according to the invention according to FIG. 1.
• hybrid link 1 also referred to as “hybrid pendulum support” is shown in perspective as a hybrid component in Figure 1.
• hybrid links are used as coupling rods on motor vehicle chassis, where they are exposed to moisture and dirt and must transmit tensile and compressive forces as well as torsional forces.
• the hybrid handlebar 1 has at its two ends ball studs 2 and 3 of ball joints 4 and 5, which are each mounted in a plastic housing 4a and 5a pivotally.
• the contour of the ball joint housing 4a and 5a is designed according to strength considerations.
• FIG. 1 A not visible in Fig. 1 connecting rod 9 between the two ball joints 4 and 5 is completely enclosed by shaft-like extensions 6 and 7, which are made in one piece with the housings 4 and 5 of the ball joints 4 and 5 and thus also made of plastic.
• the shaft-like extensions 6 and 7 meet in the embodiment shown approximately in the middle of the connecting rod at a seam 8 together. This seam 8 is particularly sealed, as the longitudinal section in Fig. 2 shows.
• the two shaft-like extensions 6 and 7 enclose the now visible connecting rod 9 completely.
• the front end of the shaft-like extension 6 has a step 10.
• FIG. 3 shows, by way of example, a perspective view of the housing 4a of the ball joint 4.
• the front free end of the shaft-like extension 6 is polygonal, in addition to the rings 11 serving as a seal, hexagonal in the specific case.
• the hexagon 12 is used to increase the torsional stiffness of the hybrid handlebar 1.
• the front free end of the two shaft-like extensions 6 and 7 fulfills two functions, namely on the one hand a sealing function and on the other hand, it serves to increase the torsional rigidity.
• connecting rod 9 two preferred embodiments of the connecting rod 9 are shown. It consists of a shaft 9a, followed by two profiling each connect and form the respective end portions 9b and 9c.
• the connecting rod 9 is in this example shown a round profile. In the context of the invention, however, other profile shapes are conceivable.
• the two outer end portions 9c of the connecting rod 9 are provided with a spline 13. They also serve to prevent the torsion of the two coupling parts of the hybrid handlebar to each other.
• the inwardly adjoining regions 9b are provided in the manner of a labyrinth seal with a plurality of coaxially arranged rings 14. They serve are intended to increase the tensile strength of the hybrid handlebar.
• the two outer end portions 9c are formed as an alternative to the serration 13 from each two facing away from each other circular cylindrical truncated cones 15.
• the torsional strength is achieved solely on the design of the shaft-like extensions of the coupling parts in the overlap area.
• the two preferably metal ball studs 2 and 3 of the ball joints 4 and 5 and the connecting rod 9 are inserted into the open injection mold.
• the shaft 9a is circumferentially sealed immediately before its right inner end region 9b, ie before the start of the labyrinth seal.
• the seal is indicated schematically and designated 16.
• the left housing 4a is sprayed with its shaft-like extension 6 (Fig. 6c). Its shaft-like extension 6 extends to the seal 16. It thus surrounds at least until about the middle of the shaft 9a of the connecting rod 9.
• the left end portion 9b, 9c of the connecting rod 9 with the serration 13 and the Wrestling 14 is also completely backlash-molded.
• On the free front end of the shaft-like extension both the step 10 with the rings 11 and the hexagonal contour is formed.
• a seal 17 is attached above the step 10, which completely seals the circumference of the shaft-like extension. This is shown schematically in Fig. 6d.
• the right-hand housing 5a can be sprayed with its shaft-like extension 7.
• This also encloses the ball of the ball joint 5 and the right, previously free end portion 9b, 9c of the connecting rod 9.
• the free end of the shaft-like extension surrounds the stepped portion of the step 10 to the seal 17. This creates the seam 8.
• By enclosing the remote part of the step 10 is achieved as a toothing of the two shaft-like extensions 6 and 7, formed by the same time the seal and the torsional strength is increased. This reliably prevents moisture from entering the connecting rod 9. Therefore, it does not have to be specially treated against corrosion in advance. Now the finished hybrid handlebar 1 can be removed.
• the seal 16 must be adapted accordingly in its sealing contour or the profile of the connecting rod is selected at the sealing point so that the seal can be ensured.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Pivots And Pivotal Connections (AREA)
• Injection Moulding Of Plastics Or The Like (AREA)
• Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (1)

Family

ID=59388066

Family Applications (1)

Country Status (6)

Families Citing this family (1)

Citations (1)

Family Cites Families (6)

• 2016
  • 2016-08-17 DE DE102016215417.6A patent/DE102016215417A1/de not_active Ceased
• 2017
  • 2017-07-17 EP EP17743002.2A patent/EP3500765B1/de active Active
  • 2017-07-17 JP JP2019500484A patent/JP2019526753A/ja not_active Withdrawn
  • 2017-07-17 WO PCT/EP2017/067978 patent/WO2018033320A1/de not_active Ceased
  • 2017-07-17 CN CN201780049968.5A patent/CN109563870B/zh active Active
  • 2017-07-17 KR KR1020197007372A patent/KR102364385B1/ko active Active

Patent Citations (2)

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