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
  • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
  • F16F1/00—Springs
  • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
  • F16F1/32—Belleville-type springs
  • F16F1/324—Belleville-type springs characterised by having tongues or arms directed in a generally radial direction, i.e. diaphragm-type springs

Definitions

• the invention relates to a plate spring axially displaceably secured on an at least partially circular cylindrical surface of a receiving body.
• Known generic devices include, in addition to the plate spring and the receiving body with the at least sectionally circular cylindrical surface, at least one separate axial stop element for the plate spring to be fastened to the receiving body. Only a single stop element is required if the plate spring can rest against a shoulder radially protruding from the circular cylindrical surface on one end face.
• a stop element to be fastened in the circular cylindrical surface for example, a conventional, standardized locking ring can be used.
• the circular cylindrical surface can be formed by the surface of a shaft or the inner surface of a bore.
• the invention is concerned with the problem of a generic, axial locking of a plate spring to be able to achieve it in a functionally satisfactory manner with as little effort as possible.
• the invention is based on the following general idea, for the explanation of which, for the sake of simplicity, reference is first made to an axial securing of a plate spring on a shaft. Basically, the same principle of action applies to a plate spring axially secured in a bore, in which the statements given in the case of a shaft lock for the inner edge of the plate spring are to be applied analogously to the outer plate spring edge.
• the inside diameter of the disc spring must be designed with reference to the diameter of the circumferential groove in such a way that there is always radial play between the bottom over the entire axial spring travel of the disc spring the circumferential groove and the inner edge of the disc spring is given. If a progressive increase in spring force is desired after exceeding a predeterminable spring force, the diameter can be adjusted in such a way that the radial play between the base groove and the inner edge of the plate spring is eliminated when a predefinable limit value is exceeded.
• the axial 'displacement lock according to the invention can be achieved simply if the disc spring without a counter force to the ümfangsnut, in which it is snap can be pushed onto a shaft.
• the disc spring for snapping into the circumferential groove is already in contact with a counter body before it snaps into the circumferential groove. needs to be tensioned.
• the plate spring must either be able to stretch radially and elastically overall, or an inner edge area of the plate spring must be provided, which can elastically deform in the axial direction with simultaneous radial expansion before the plate spring snaps into the circumferential groove.
• the inner circumferential area of the plate spring is circumferentially resolved into radially freely projecting, spaced apart spring bars. Then these radial spring bars can temporarily deform elastically for the snap-in process in a manner necessary for this.
• the plate spring in the area of the spring bars can deflect radially outward for the snap-in process.
• the ratio of the inside diameter to the outside diameter of the plate spring jacket surface should be as close as possible to one and the distance between the spring bars should be large. This can be achieved by reducing the number of spring bars on the disc spring to five or two, the effect being improved as the number decreases.
• the plate spring must slide out of the circumferential groove by additional measures.
• the transition area of the spring bars to the lateral surface of the plate spring should be chosen as narrow as possible.
• the proportion of these transition areas in the circumference of the inner diameter of the disk spring jacket surface should not be greater than 15%, better less than 12%, preferably even less than 10%.
• a disc spring can snap particularly easily into a circumferential groove if the disc spring is deflected without being permanently deformed until the disc spring has been turned over and the inside diameter can increase beyond that in the non-energized state.
• a plate spring tensioned in this way can be moved on the shaft until the inside diameter or the spring bars snap into the circumferential groove while releasing the plate spring.
• the outer circumference of the plate spring must be designed accordingly with spring bars.
• La is a view of a plate spring axially secured on a shaft in the shaft axis direction
• Fig. Lb the plate spring according to Fig. La before being pushed onto the shaft
• Fig. 2 shows a longitudinal section through a shaft with a plate spring to be secured against a stop.
• the plate spring 1 can come to rest against a counter body 2 which remains axially freely movable or such a counter body 2 which is supposed to constantly bear against it under the spring force emanating from the plate spring 1.
• a circumferential groove 4 is provided in the shaft 3 in the area in which the plate spring 1 is to be axially secured.
• the plate spring 1 In the area of its inner circumference, the plate spring 1 has a large number of radially freely projecting, spaced apart spring webs 5 distributed evenly around its circumference.
• a plate spring 1 with such an inner circumference can also be referred to as an internally slotted plate spring 1.
• a plate spring 1 mounted for one of the two applications according to FIG. 1 serves in the one case to be able to resiliently intercept a freely movable counter body 2 when it strikes the plate spring 1.
• the counter body 2 rests on the plate spring 1 in a spring-tensioning manner, although initially a system-free installation of the plate spring 1 is possible.
• the counter body 6 is already axially fixed to the shaft 3 before the mounting of the plate spring 1 and the plate spring 1 should bear against this counter body 6 after it has been mounted.
• the plate spring 1 must be mounted on the axially already locked counter body 6 while building up the spring tension, that is to say it must be snapped into the circumferential groove 4.
• the inner circumference of the plate spring 1 must be able to expand radially or the inner circumferential area of the plate spring 1 must be designed, for example, in the form of elastic spring bars 5, which extend in the axial direction before snapping must be able to deform elastically into the circumferential groove 4 or the plate spring must be able to be turned inside out so far that its inner diameter increases again and it is pushed on the shaft with the inner diameter ahead into the groove in order to engage there while reducing the inner diameter.

Landscapes

• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Springs (AREA)
• Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Priority Applications (4)

Applications Claiming Priority (2)

Publications (2)

Family

ID=33482143

Family Applications (1)

Country Status (8)

Families Citing this family (7)

Family Cites Families (31)

• 2003
  • 2003-05-26 DE DE10323577A patent/DE10323577A1/de not_active Withdrawn
• 2004
  • 2004-05-26 DE DE502004007788T patent/DE502004007788D1/de not_active Expired - Fee Related
  • 2004-05-26 WO PCT/DE2004/001097 patent/WO2004106767A2/de not_active Ceased
  • 2004-05-26 AT AT04738566T patent/ATE403815T1/de not_active IP Right Cessation
  • 2004-05-26 ES ES04738566T patent/ES2309526T3/es not_active Expired - Lifetime
  • 2004-05-26 EP EP04738566A patent/EP1627161B1/de not_active Expired - Lifetime
  • 2004-05-26 CN CNA2004800146614A patent/CN1795339A/zh active Pending
  • 2004-05-26 US US10/558,507 patent/US7354032B2/en not_active Expired - Fee Related
  • 2004-05-26 JP JP2006529607A patent/JP2006528329A/ja active Pending

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