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
  • 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
• • 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
  • F16C11/0628—Construction or details of the socket member with linings
  • F16C11/0633—Construction or details of the socket member with linings the linings being made of plastics
  • F16C11/0638—Construction or details of the socket member with linings the linings being made of plastics characterised by geometrical details

Definitions

• the invention relates to a bearing shell made of plastic material for a ball joint for mounting a ball joint pin which is rotatably and pivotably received in the bearing shell.
• Ball joints are used in many areas of mechanical engineering and in particular in automotive engineering as components of chassis and steering assemblies.
• the bearing shells present in the ball joints surround a so-called ball head as part of a ball joint pin and are in turn accommodated in a ball joint housing.
• Ball joint pins and housings are arranged on the one hand on the chassis or steering side and on the other hand are fixed on the body, so that movements of the two components with respect to one another are made possible in certain defined degrees of freedom.
• a general problem with the assembly of the ball joints is that the bearing shell has to surround the ball head more than half to securely hold the ball pin in order to avoid inadvertent separation of the bearing shell and ball pin.
• the bearing shell must be designed so that it during the Assembly process can be put over the ball head and can be fixed due to their elastic properties or other design requirements in connection with the subsequent installation of the bearing shell in the ball joint housing.
• the bearing shell can be provided with a plurality of longitudinal slots.
• the bearing shell itself is constructed in such a way that it has essentially a hollow spherical recess for receiving the ball head of the ball joint pin. This is pressed into this recess through an existing insertion opening, the slotted shape of the bearing shell causing the area provided with the opening to expand so far that the ball stud can be inserted.
• the bearing shell consists of two shell parts which together form an inner hollow spherical bearing surface, which are connected to one another by means of a so-called film hinge and can therefore be opened for the assembly process on the ball joint pin. After attaching the two shell parts are closed and again inserted into the ball joint housing.
• the above-mentioned second design variant is used for certain application purposes, in which a film joint connects two shell parts and enables the bearing shell to be opened for assembly purposes.
• the object of the present invention is, based on the problems outlined and the prior art solutions known from the prior art, to provide a bearing shell for a ball joint Design that on the one hand high forces can be easily absorbed in one load direction and on the other hand the bearing shell is easy to manufacture and easy to handle in terms of construction and assembly technology.
• the bearing shell consists of plastic material for a ball joint for mounting a ball joint pin which is rotatably and pivotably received in the bearing shell and consists of at least two shell parts. These form together, i.e. if the bearing shell is inserted in the spherical joint housing, a self-contained, inner hollow spherical bearing surface, the shell parts in their entirety form the shape of a bearing ring, each with an opening arranged on the opposite end faces of the bearing ring and at least one across one of the opening cross-sections the web connecting the shell parts is arranged.
• This new design makes it possible to bend the two shell parts apart in a defined manner by means of the web connecting them, without the plastic material used being particularly flexible.
• the unnecessary elasticity also enables the use of high-strength, thus relatively brittle plastics, so that even the highest loads can be absorbed and transmitted using small ball joint variants.
• the web connecting the shell parts advantageously consists of an elastic plastic material, so that the shell parts come to lie in a defined position for the further assembly steps in the joint housing or on the joint ball after assembly. Special embodiments of the teaching according to the invention also result from the features of the sub-claims.
• a special embodiment provides that the web connecting the shell parts has an essentially semicircular arch shape over the opening cross section of the bearing ring.
• the overall dimensions of the bearing shell can be limited in that the web has a substantially rectangular cross section, the larger lateral dimension of the cross section being arranged toward the opening cross section of the bearing ring.
• the smaller side dimension of the web cross section can essentially correspond to the thickness of the bearing ring. This measure ensures, on the one hand, that the shell halves are adequately unfolded, and on the other hand, the uniform thickness of the web prevents kinking with the resulting overstretching of the plastic material, as occurs, for example, in film joints.
• At least one projection can also be arranged on the bearing shell on the outer edges of the bearing ring as an anti-rotation element. This projection engages in a corresponding recess of an associated ball joint housing receiving the bearing shell and prevents a relative movement between the ball joint housing and bearing shell.
• an expedient embodiment of the subject matter of the invention provides that the bearing ring and web consist of plastic materials of different elasticity.
• the bearing ring as a functional element for absorbing the necessary forces can be considerably less Have elasticity than the plastic material of the web.
• the appropriate choice of material in connection with the constructive design of the web increases the mobility of the half-shells with respect to one another without overstretching as can occur with film hinges.
• the different material compositions of the bearing ring and the web can be realized, for example, by a co-injection process or by means of a two-component process.
• Another expedient embodiment of the subject matter of the invention also provides that a narrow intermediate gap is arranged between the shell parts of the bearing ring in the assembled state of the bearing shell.
• This narrow intermediate gap serves to absorb thermal expansion, which can occur as a result of increased thermal stress on the shell parts of the bearing shell.
• Figures 1 and 2 show perspective views of the bearing shell according to the invention.
• the bearing shell essentially consists of a bearing ring 1, which has an inner hollow spherical segment area. At the There is an opening 2 and 3 on the top and bottom of the bearing ring. In the exemplary embodiment shown, the opening 3 is spanned by a web 4.
• the figure also shows that the bearing ring, designated in its entirety by 1, forming the bearing shell consists of two shell parts la and lb. Both together form on their inner side the hollow spherical bearing surface for a spherical head of a spherical joint bolt to be accommodated therein, which is not the subject of the invention and has therefore not been shown.
• the web 4 connects the shell parts la and lb to one another and enables a slight relative movement of the shell parts la and lb to one another, so that the bearing shell can be slipped or snapped over the ball head of a ball joint pin.
• the figure also shows that on the outer contour of the bearing ring 1 there are diametrically opposite two projections 5, 6 which engage in corresponding recesses in a ball joint housing surrounding the bearing shell and thus reliably prevent a relative movement between the bearing shell and ball joint housing.
• rotation can also be secured by embedding the web 4 in a corresponding recess in a joint housing receiving the bearing shell with the associated cover.
• the web 4 has a rectangular cross section, the larger lateral dimension of the cross section being arranged parallel to the opening cross section of the opening 3 of the bearing ring 1.
• the smaller one Lateral dimension of the web cross section facilitates the bending of the web as a result of the shell parts la and lb being pushed apart.
• Web 4 and bearing ring 1 can, for example, be constructed from different materials by means of a special process of coinjection or multi-component injection molding, so that greater elasticity can be achieved for the plastic material of the web than for the bearing ring 1 intended to absorb and transmit forces the plastic materials used improve their use properties through fiber reinforcements.
• a narrow intermediate gap 7 remains between the shell parts 1 a and 1 b. This gap serves to absorb thermal expansions that can result from the shell parts la and lb as a result of high thermal stress.
• the described redesign of the bearing shell according to the invention has the particular advantage that a high load capacity of the bearing shell as a result of the possibility of using a heavy-duty plastic material with the least elasticity goes hand in hand with easy assembly of the bearing shell by slightly pushing apart the shell parts la and lb and that Bearing shell is then pushed with the opening 2 of the bearing ring 1 over the ball head of a ball joint pin.
• FIG. 2 shows a further embodiment variant of the bearing shell according to the invention, which differs in particular from the embodiment of FIG. 1 in its outer contour.
• Essential elements of the invention such as the web 4, the bearing ring 1 with the shell parts la and lb as well as the openings 2 and 3 adjoining the bearing ring 1 correspond in their features to the first exemplary embodiment discussed in detail with reference to FIG. 1.
• Differences exist in the outer contour of the bearing ring 1, which in the exemplary embodiment shown in FIG. 2 is spherical in the lower region facing the opening 2, whereas the upper region adjoining the spherical region is again cylindrical, as is also the case in the example of FIG Figure 1 results.
• the design variant of FIG. 2 has a collar area which is provided with a number of radially projecting tooth areas.
• the web 4 relevant to the invention extends from the collar-shaped region of the bearing ring 1 over the center of the opening 3 analogously to the exemplary embodiment in FIG. 1.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Physics & Mathematics (AREA)
• Geometry (AREA)
• Pivots And Pivotal Connections (AREA)
• Rolling Contact Bearings (AREA)
• Sliding-Contact Bearings (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34968967

Family Applications (1)

Country Status (10)

Families Citing this family (7)

Citations (1)

Family Cites Families (19)

• 2004
  • 2004-05-05 DE DE102004022533A patent/DE102004022533B4/de not_active Expired - Lifetime
• 2005
  • 2005-05-02 MX MXPA06012712A patent/MXPA06012712A/es not_active Application Discontinuation
  • 2005-05-02 ZA ZA200610123A patent/ZA200610123B/en unknown
  • 2005-05-02 KR KR1020067023377A patent/KR20070012697A/ko not_active Application Discontinuation
  • 2005-05-02 WO PCT/DE2005/000822 patent/WO2005108806A1/de active Application Filing
  • 2005-05-02 JP JP2007511850A patent/JP4931803B2/ja not_active Expired - Fee Related
  • 2005-05-02 CN CNB2005800142571A patent/CN100439729C/zh active Active
  • 2005-05-02 US US11/568,638 patent/US8333513B2/en active Active
  • 2005-05-02 EP EP05747695A patent/EP1743104A1/de not_active Withdrawn
  • 2005-05-02 BR BRPI0510682-6A patent/BRPI0510682B1/pt not_active IP Right Cessation

Patent Citations (1)

Non-Patent Citations (1)

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