Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
  • B62K19/00—Cycle frames
  • B62K19/02—Cycle frames characterised by material or cross-section of frame members
  • B62K19/04—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity
  • B62K19/08—Cycle frames characterised by material or cross-section of frame members the material being wholly or mainly metallic, e.g. of high elasticity made from sheet
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
  • B62K19/00—Cycle frames
  • B62K19/18—Joints between frame members
  • B62K19/20—Joints between frame members welded, soldered, or brazed
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21D53/00—Making other particular articles
  • B21D53/86—Making other particular articles other parts for bicycles or motorcycles

Definitions

• the present invention relates to a frame unit for a bicycle comprising a main frame.
• the invention also relates to a method for producing a frame unit comprising a main frame for a bicycle, in particular a frame unit according to the invention.
• the invention relates to an advantageous use of a frame unit according to the invention.
• Two-wheeler frames can be made, for example, by means of conventional pipe construction made of steel.
• various round tubes are joined together at their ends to, for example, a part of a
• the main frame is understood to mean in particular the central frame part without further attachments, such as a rear triangle.
• the freedom of design in the design of the bicycle frame is limited.
• the steel material has been virtually completely displaced in the production of such frame units by other materials such as aluminum or carbon fiber reinforced materials.
• WO 2013/029788 AI discloses a bicycle frame, which is formed by half shells, which are formed from a fiber-reinforced thermoplastic material.
• a single frame component can be made of a first and a second half-shell made of sheet metal parts. To form the main frame, however, further frame components are necessary, which makes the production correspondingly expensive.
• the present invention has the object to provide a generic frame unit, a generic method and a generic use, the disadvantages of the prior art to be avoided and still a frame unit to be achieved with a high design freedom.
• the object is achieved in a generic frame unit in that the main frame is formed by a first sub-shell and a second sub-shell joined to the first sub-shell, and wherein the first sub-shell and the second sub-shell made of a steel comprehensive material are.
• the invention thus turns away from the approaches pursued in the prior art which suggest the use of light metals and carbon fiber reinforced plastics. Rather, it has been recognized that comprising at least two interconnected subshells made of a steel by a main frame Material on the one hand, the design freedom can be increased despite the use of steel compared to conventional steel frame and on the other hand at the same time a high stability is achieved. Finally, a comparatively simple production can also be made possible. Contrary to prejudice, it has been shown that comparatively stiff and lightweight frame units can be produced, for example, with respect to aluminum, even without inner stiffening plates, but they also look much more filigree and elegant.
• the main frame is understood as meaning, in particular, the central frame part without further attachments, such as a rear triangle.
• the entire frame is understood as meaning, in particular, the central frame part without further attachments, such as a rear triangle.
• Main frame are formed by the first and second sub-shell. However, it is preferably not the entire frame or the entire frame unit, but only the main frame of the frame unit formed by the first and the second sub-shell. For example, a rear triangle and / or other attachments of the frame unit are not formed by the first and the second partial shell. This results in an advantageous modular design.
• the main frame has a plurality (for example two, three or four) tubular sections.
• the tubular sections may for example be substantially straight or curved.
• the main frame has, for example laterally considered a substantially triangular or trapezoidal geometry, in particular when the frame unit is designed as a diamond frame.
• At least one tubular portion of the main frame may have a variable cross-sectional shape along its length.
• a load-appropriate and / or weight-optimized design can be provided, which is not possible with conventional steel pipes.
• first partial shell is in particular a first half-shell and the second partial shell is in particular a second half-shell.
• the partial shells are in particular lateral partial shells, which each form a lateral half of the main frame.
• the first sub-shell is in the longitudinal direction or direction of travel of the two-wheel seen, for example, a right sub-shell and the second sub-shell, a left sub-shell of the main frame.
• the partial shells each have, at least in sections, a substantially C-shaped cross section.
• the partial shells are in
• the main frame comprises a top tube, a down tube, a seat tube and / or a head tube. It has been found that when the main frame comprises such parts, a particularly stable and easy to manufacture frame unit can be provided with attractive appearance.
• the frame unit is a so-called diamond frame or a part thereof, which allows a particularly high stability with low weight.
• the main frame for example, the top tube, the down tube, the seat tube and the head tube.
• the main frame has a substantially triangular or trapezoidal geometry.
• An intended rear triangle can also have a substantially triangular or trapezoidal geometry.
• Frame unit are or is the first sub-shell and / or the second sub-shell made by deep drawing.
• deep-drawn part shells complex geometries with a high rigidity can be realized. As a result, this leads to a high design freedom with variable cross-sections of the frame unit.
• a sufficiently high dimensional accuracy of the partial shells can be achieved.
• the partial shells are made of sheet metal blanks.
• the first sub-shell and the second sub-shell by means of a
• Fusion welding process in particular by means of laser welding and / or by laser hybrid welding joined together.
• laser laser welding using a protective gas is called laser hybrid welding.
• an inert shielding gas such as argon and / or helium
• an active shielding gas such as carbon dioxide and / or oxygen
• Frame unit are the first sub-shell and the second sub-shell at least
• the main load direction is understood in particular to be the direction along which the frame unit experiences the greatest load.
• the partial shells are at least partially substantially parallel to the
• joints or joint seams along or parallel to the main load direction. If the main frame has, for example, tubular sections, the joints or joint seams run essentially in the longitudinal direction of the tubular sections.
• Frame unit extends at least one cable channel, in particular for a shift cable and / or a brake cable, at least in sections between the first sub-shell and the second sub-shell in the main frame.
• cable channels can be particularly easily integrated into the frame unit, since these for example, before joining the first and the second partial shell in the first
• Partial shell can be introduced.
• the frame unit has a rear frame connected to the main frame, which in particular has at least one strut, in particular at least one chain stay and / or at least one seat post.
• the rear part or parts thereof, for example the chain stays can in principle also be formed by the first and the second partial shell, that is to say be integrally formed with the main frame. However, it is preferred if the rear construction is formed separately from the subshells and connected to them.
• the rear triangle (at least) on two lower struts or chain stays and / or (at least) two upper struts or saddle struts.
• the chain stays and / or saddle struts are formed as profiles or folding parts.
• the chain stays are connected to increase the stability by a folding part.
• the frame unit one or more attachments, in particular one or more bushings, a head tube, a seat post, a saddle clamp and / or a bottom bracket shell, on.
• attachments in particular one or more bushings, a head tube, a seat post, a saddle clamp and / or a bottom bracket shell, on.
• attachments also be integral with the subshells, that is the main frame, be formed. Due to the separate training as attachments, however, a high dimensional accuracy in the areas of the corresponding attachments can be achieved.
• the bushings (for example, two) can the precise recording of the
• Tax rate serve.
• the entire head tube as an attachment be formed. This can, for example, at least partially by the
• Part shells are embraced. As a result, an extremely stiff head tube can be realized.
• This can also be formed as an attachment and, for example, at least partially surrounded by the partial shells, whereby a particularly rigid design of the seat post is possible.
• the saddle clamp or the bottom bracket shell can be designed as an attachment. Here too, correspondingly small tolerances can be set.
• Especially in the area of the bottom bracket shell can be a stiff
• Node design can be achieved.
• Frame unit is the material steel, in particular a high-strength steel, or a steel composite material. If the material is a steel or high-strength steel, for example, solid metal sheets can be used. Is the material a
• Steel composite material for example, a sandwich sheet can be used, which has metallic cover layers and a plastic layer disposed therebetween.
• advantageous properties in particular a lower weight, can be achieved with a comparatively high rigidity.
• Frame unit is or are a drive or a part thereof and / or an energy storage or a tank arranged for this purpose between the first sub-shell and the second sub-shell in the main frame.
• the drive is for example an electric drive or electric motor.
• the energy store is for example a battery. It is also conceivable that a tank is provided for a fuel.
• the frame unit according to the invention can be advantageously used for motor-driven two-wheelers.
• the object mentioned in a generic method is achieved in that the method Steps comprises: providing a first sub-shell and a second sub-shell, wherein the first sub-shell and the second sub-shell are made of a steel material; and joining the first subshell and the second subshell so that the main frame of the frame unit is formed.
• the method according to the invention deviates from the prior art and the use of light metals and carbon fiber reinforced plastics. Rather, two interconnected subshells are made of a steel-comprising material to form the main frame of the frame unit. This allows the freedom of design despite the use of steel compared to conventional
• the provision of the first subshell and the second subshell comprises deep drawing of the first and / or the second subshell.
• deep-drawn parts a particularly high degree of design freedom can be achieved with sufficient rigidity and dimensional accuracy.
• sheet metal blanks can be inserted into corresponding tools, which the corresponding sub-shells from the
• the method further comprises: positioning the first subshell; Arranging one or more attachments, in particular one or more bushings, a
• Head tube a seat post, a saddle clamp and / or a bottom bracket shell, on the first part shell.
• the method further comprises: positioning struts, in particular chain stays, for a rear frame of the frame unit; Connecting the struts by a
• Connecting element in particular a folding part; optional adjustment of the struts, in particular by machining; and arranging the struts on the first subshell.
• a subassembly can first be made, which is then arranged on the first subshell.
• the method for producing a frame unit with a main frame and disposed thereon, but at least partially separately trained rear triangle is simplified.
• the stability of the subassembly and ultimately the rear end can be increased.
• Connecting element are also connected to the bottom bracket shell before the subassembly of struts, folding part and bottom bracket shell is arranged on the subshell.
• the struts for example by milling, the dimensional accuracy is increased.
• the struts for example, previously also be made of partial shells or folding parts.
• the method further comprises: at least partially integrating at least one
• the cable channels can, for example, for
• Shift cables or brake cables are used.
• Cable ducts can be particularly easily integrated into the frame unit, in particular the main frame due to the easy accessibility.
• the cable channels are positioned in the first subshell before joining the first and the second subshells.
• first and the second partial shell are positioned before the joining of the first and the second partial shell for integration in the first partial shell.
• an (electric) drive or a part thereof and / or an energy store or a tank for this purpose can be arranged between the first and the second partial shell.
• the joining of the first partial shell and the second partial shell comprises
• Fusion welding process in particular laser welding and / or a
• Laser hybrid welding Through the use of fusion welding methods and in particular laser welding and / or laser hybrid welding, it is possible to achieve an extensive automation of the production process, low heat distortion and attractive appearance. With respect to further advantageous embodiments of the method is based on the
• Embodiments of the method for producing a frame unit may also be disclosed corresponding frame units. According to a third teaching of the present invention, the aforementioned
• Task also by the use of a frame unit according to the invention for a operated by muscle power and / or motor-driven bicycle, in particular for a bicycle, an electric bicycle or a motorcycle such as a motorcycle, solved.
• FIG. 1 - 4 perspective views for illustrating a
• Fig. 5 is a perspective view of the first embodiment of a
• FIG. 7a, b are perspective views of a second embodiment of a
• FIG. 8a-d enlarged views of the main frame in the region of the head tube of
• FIGS. 1 to 4 show perspective views for illustrating an embodiment of a method for producing a first embodiment
• the frame unit 1 is in this example a bicycle frame and consists essentially of a main frame 2 and a Rear triangle 4.
• the substantially triangular or trapezoidal main frame 2 has a control tube 21, a seat tube 22, a top tube 23 and a down tube 24 (see FIG. 5).
• a pair of struts in this case two chain stays 6a, 6b, are positioned and connected by a hinged part 8.
• Chain stays 6a, 6b are each designed as closed hollow profiles
• the chain stays 6a, 6b each have a recess 10a, 10b for receiving the rear axle.
• a cable channel 12 for the shift cable is already integrated in the chain stay 6a, which runs inside the chain stay 6a, but is shown for illustration purposes.
• Fig. Lb shows the part of the rear end 4 of Fig. La, in which now additionally
• Bottom bracket housing 14 is arranged on the chain stays 6a, 6b and the folding part 8. Due to the separate design of the bottom bracket 14, the tolerance for the bottom bracket is precisely adjustable. Optionally, an adaptation, for example a re-milling, of the chain stays 6a, 6b can optionally take place, if necessary.
• FIG. 2 now shows a perspective view of a first partial shell 16a of FIG
• the first partial shell 16a is formed in this case as a right half shell and has a substantially C-shaped cross-section.
• the first partial shell 16a was made of a steel sheet by deep drawing.
• the first partial shell 16a was inserted into a device (not shown). This allows accurate positioning of attachments and the subassembly of FIG. 1.
• a saddle clamp 19 and the subassembly of Fig.l comprising the bottom bracket 14, the chain stays 6a, 6b and the folding part 8 are positioned and arranged on the partial shell 16a.
• individual elements can also be formed integrally with the partial shell 16a.
• FIG. 3 shows a perspective view of the first partial shell 16a from FIG. 2, cable channels 12, 30 now being additionally introduced into the first partial shell 16a.
• the cable duct 12 for the shift cable runs essentially along the (later) down tube 24 and the cable duct 30 for the brake cable runs essentially along the (later) top tube 23.
• FIG. 4 now shows a perspective view of the arrangement from FIG. 3, wherein a second partial shell 16b has been positioned on the first partial shell 16a and joined with it.
• the second sub-shell 16b is formed as a left half-shell and substantially mirror-symmetrical to the first sub-shell 16a.
• the first partial shell 16a and the second partial shell 16b have been joined together, for example, by means of laser welding or laser hybrid welding along the weld seams 17. This resulted in a low heat distortion after welding, resulting in a high dimensional stability of the frame unit and correspondingly low rework. As a result, a more attractive appearance can be achieved compared to conventional welding methods.
• the first partial shell 16a and the second partial shell 16b are joined together at least in sections substantially along the main loading direction. As a result, the welds 17 have a load-oriented location.
• FIG. 5 now shows a perspective view of the first exemplary embodiment of the frame unit 1.
• the frame unit 1 consists essentially of a main frame 2 and a rear frame 4.
• the main frame 2 has been joined by joining the first partial shell 16a and the second partial shell 16b educated.
• Main frame 2 is substantially triangular or trapezoidal and in this case has a control tube 21, a seat tube 22, a top tube 23 and a down tube 24.
• the control ear 21 and the seat post 25 are integrally formed with the main frame.
• Rear stay 4 has additionally been supplemented by two further struts, in this case seat stays 32a, 32b, which respectively extend from the upper part of the seat tube 22 to the corresponding ends of the chain stays 6a, 6b.
• the saddle struts are also connected to each other by a connecting element 34.
• Fig. 7a, b show two perspective views of a second embodiment of a frame unit according to the invention, which inter alia by a in the
• Fig. 8a-d shows enlarged views of the main frame 2 'in the region of the head tube of the embodiment of Fig. 7.
• the frame unit 1 no bearing bushes 18, but the entire head tube 21' formed as an attachment.
• FIG. 8a shows the first partial shell 16a '
• FIG. 8b additionally the control tube 2 V
• Fig. 8c further in addition the second partial shell 16 b 'in a perspective view
• Fig. 8d is a transparent view of Fig. 8c.
• FIGS. 9a-c show various views of a third embodiment of a frame unit 1 "according to the invention."
• the frame unit 1 is similar to the frame unit.
• the seat post 25 is "not integral with the main frame 2", but formed as a separate attachment.
• FIGS. 9a, c the position of the seat post 25 "is shown before the first partial shell 16a" is joined to the second partial shell 16b ".

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Automatic Cycles, And Cycles In General (AREA)
• Body Structure For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=56555373

Family Applications (1)

Country Status (5)

Families Citing this family (3)

Family Cites Families (20)

• 2015
  • 2015-08-20 DE DE102015113863.8A patent/DE102015113863A1/de not_active Withdrawn
• 2016
  • 2016-07-21 WO PCT/EP2016/067382 patent/WO2017029065A1/de active Application Filing
  • 2016-07-21 US US15/752,772 patent/US10689054B2/en active Active
  • 2016-07-21 EP EP16745080.8A patent/EP3337718A1/de not_active Withdrawn
  • 2016-07-21 CN CN201680047058.9A patent/CN108290615A/zh active Pending

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