WO1989004271A1 - Garde-boue pour bicyclettes - Google Patents

Garde-boue pour bicyclettes Download PDF

Info

Publication number
WO1989004271A1
WO1989004271A1 PCT/DE1988/000677 DE8800677W WO8904271A1 WO 1989004271 A1 WO1989004271 A1 WO 1989004271A1 DE 8800677 W DE8800677 W DE 8800677W WO 8904271 A1 WO8904271 A1 WO 8904271A1
Authority
WO
WIPO (PCT)
Prior art keywords
splash guard
mudguard
guard according
fender
segments
Prior art date
Application number
PCT/DE1988/000677
Other languages
German (de)
English (en)
Inventor
Jürgen KRAFT
Original Assignee
Kraft Juergen
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
Priority claimed from DE8714584U external-priority patent/DE8714584U1/de
Application filed by Kraft Juergen filed Critical Kraft Juergen
Publication of WO1989004271A1 publication Critical patent/WO1989004271A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
    • B62J15/00—Mud-guards for wheels

Definitions

  • the invention relates to a splash guard against hurled rainwater for sports bikes.
  • a splash guard for sports bikes is known for example from DE-GM-86 05 731.6.
  • a splash guard is described, which is releasably attached to a fastener in the form of a U-shaped bracket.
  • the U-shaped bracket is attached to the frame above the fork.
  • the splash guard can be attached if necessary. It is intended as additional protection to the usual mudguard and, if not connected, must be kept separately and carried if necessary.
  • a shortened splash guard in the form of a fender protruding from the bicycle frame, which protrudes beyond the wheel fork and which can be extended once by pulling out, is also known.
  • This version offers only a very limited protection in the extended state, which is in no way comparable to the protection of a fixed mudguard, so that the cyclist is still heavily splashed with dirty water, not least because of the suction that occurs behind him.
  • a sheet metal part designed in this way is not very stable, in particular in the extended state.
  • the object of the invention is therefore to provide an effective splash guard, which takes up only a small, defined storage space and can be made quick and easy effective and ineffective.
  • the mudguard which is mounted in a fixed manner per se, is designed to be variable in length in such a way that it can be extended practically at least almost to the length of a customary mudguard and at least is held on both sides.
  • the mudguard brings about the known advantages that are also present in a conventional rigid mudguard which is fixed to the frame and has its own bracket. So there is primarily protection against hurled mud, dust or polluted water.
  • the mudguard is no longer recognizable as such, which on the one hand supports the sporty impression of the bike and on the other hand gives the advantage of reduced air resistance.
  • reductions up to approximately the size of a cigarette box are possible.
  • the fender is shortened by a folding process, a folding process or a pushing process. Then the shortening or lengthening of the mudguard can be carried out entirely without assembly tools. If necessary, the journey is only briefly interrupted and the mudguard pulled out to its desired length, usually to the maximum length.
  • brackets which is fixed rigidly or pivotably in the region of the wheel hub at the free end of the mudguard, but to attach a plurality of holding or supporting brackets which guarantee the distance of the mudguard from the tire surface and which are likewise fixed or pivotable can be provided on the frame or the wheel hub.
  • spoke-like support rods which may be variable in length, are possible, which act like a bracket on both sides or pivotably on one of the two sides of the mudguard that is pulled out.
  • the change in length can be done by folding vertically for the longitudinal extension of the fender, axes running in the fender or axes running horizontally, or in the manner of a telescopic slide guide, individual holding or spacing brackets can be provided fixedly or easily detachably at the intermediate point.
  • a strap made of spring steel is provided as a mudguard which is variable in length and which can be wound up in the area of a wheel fork on the frame in the manner of a steel strip metering strip on the basis of spring force or by hand and pulled off against the spring force or against a detent .
  • the band can be made with a tension that it follows the surface of a wheel in the extended state.
  • mudguard which is variable in length
  • the mudguard is connected to the frame of the bicycle via easily detachable fastening means. This makes it possible to go on safely rain-free days or e.g. B. in racing, if a splash guard is out of the question, to do without it altogether. It can be disassembled in a few simple steps and remains in the bike's storage location.
  • FIG. 1 a bicycle with attachment locations for a mudguard variable in length
  • Figure 2 the supervision of a retractable fender
  • Figure 3 the side view of a foldable mudguard in three different positions.
  • Figure 4 the mudguard according to Figure 3 with several brackets
  • Figure 5 the mudguard according to Figure 4 with interlocking brackets
  • Figure 6 a fender with hinged to the side
  • FIG. 7 a mudguard with segments that can be swung open to the side and are arranged transversely to the direction of travel and
  • Figure 8 a guide mechanism for foldable or rollout mudguards.
  • a racing bike 1 is shown schematically, which comprises a frame 3 with front fork 5 and rear fork 7, two wheels 9, a saddle 11 and a handlebar 13 as essential components.
  • the frame 3 has, below the saddle 11, a connecting strut 15 consisting of two parallel tubes, which leads to the end of the rear fork 7 and is connected to it there.
  • variable length mudguard 17 is attached just above the wheel.
  • the fender 17 is symbolically indicated by a double arrow. It can be shortened and lengthened from the attachment point on the fork 5, or the connecting strut 15, both to the front and to the rear.
  • a first bracket 19 is attached to the connecting strut 15 and holds the shortened fender 17 in a defined position.
  • the first bracket 19 can also be attached to the frame 3 at another suitable location, for example on the lower, rear fork 7.
  • the first bracket 19 comprises, for example, a bridge piece 33 between the two tubes or branches of the connecting strut 15.
  • the bridge or Connector 33 can be designed like a plate.
  • a telescopic mudguard 17 is fastened via a clamp connection or wing screws. For such an embodiment it is essential that the fastening means with which the mudguard is connected to the frame 3 of the bicycle are easily detachable.
  • the first holder 19 can comprise an axis 21 which runs between the two tubes of the connecting strut 15.
  • a pivotable, rectangular bracket 23 is attached to the axis 21.
  • the axis 21 need not be continuous, but can be designed as part of the rectangular bracket 23. It can then be hooked into bores in the connecting strut 15 by pulling it apart or pressing it together depending on the pretension and then latching it into the holes.
  • the bracket 23 is folded away from the fender 17. It can be pushed in the direction of the single arrow 25 over the folded fender 17 and fix it in the shortened state.
  • a second holder 27 is additionally fastened, which is arranged around the rear barrel axis along two th double arrow 29 is displaceable.
  • the second bracket 27 consists, for example, of a bracket, as is known as a stand for a bicycle in the vertically folded-down state.
  • the second holder 27 is shown detached from the fender 17 for illustration.
  • the free end of the fender 17, that is to say the end which is not connected to the first holder 19 is connected to the bracket of the second holder 27 (see also FIG. 3). Then it is possible to move the second bracket 27 with a single handle so that the fender 17 is extended and held in a predetermined position.
  • the rotary movement of the bracket can also be locked on the wheel suspension.
  • This predetermined position will generally be the maximum extended length of the fender 17.
  • the second bracket 27 is always necessary when the shortening mechanism of the mudguard 17 is not sufficiently stable in itself to be able to do without further support. This is the case, for example, with the concertina-shaped embodiment shown in FIG.
  • the mudguard 17 is preferably made of a corrosion-resistant material, such as aluminum, steel, tempered sheet metal or plastic.
  • this mudguard 17 which serves as a splash guard, is that it can only be converted into a functional mudguard 17 if required. Otherwise, it is folded and fastened to the first holder 19 and cannot be recognized as a fender 17.
  • FIG 2 the supervision of a telescopic fender 17 is shown.
  • the bend is not visible, but it is advisable to adapt it to the wheel sizes on the market.
  • the fender 17, as in the case of an antenna, consists of a plurality of segments 31 which can be shifted into one another.
  • the segments 31 each taper somewhat towards the end so that they can be pushed into each other.
  • This embodiment is particularly advantageous since it can be pulled out and retracted like a telescopic antenna in a portable radio with a simple handle.
  • Each section can be curved according to the wheel circumference and length.
  • the right end of the largest segment 31 is connected to a first holder 19 via wing screws 32.
  • the first bracket 19 consists of a flat bridge 33 which is fastened between the two tubes or branches of the connecting strut 15.
  • FIG. 3 shows a mudguard 17 which can be extended like an accordion in three different positions 35a, 35b, 35c.
  • the left end of the accordion-like fender 17 is attached to the first bracket 19.
  • the second end 37 is connected to the bracket forming the second holder 27.
  • the position 35c represents the maximum lengthening of the mudguard 17. Any position 35b can be set between the maximum shortened position 35a and this maximum lengthened position 35c.
  • FIG. 4 shows a further development of the embodiment shown in FIG. 3. While in the folded mudguard according to Firgur 3, the curvature of the mudguard, which is adapted to the wheel diameter, is largely caused by a spring force (in the sheet metal parts forming the mudguard), several brackets 27a to 27d are provided in FIG. The pieces between de ⁇ i individual brackets 27a-d can again be prestressed so that the curvature predetermined by the brackets 27a-d is supported.
  • FIG. 4 shows only one first, folded position 35a and a second, fully extended position 35c shown.
  • the mudguard can take any position. It is possible to fully extend only a few sections, for example to have the sections between the brackets 27c and 27d and the remaining sections folded, and to pull out all sections evenly.
  • brackets 27a-d are fastened to the lower hinges 40 facing the wheel.
  • the upper hinges can also be selected or, as shown in FIG. 3, the brackets 27a-d are fastened to the sheet metal in the area between the lower and upper hinges.
  • brackets 27a-d can also be of different lengths and slide against one another, as is known mechanically in the case of collapsible umbrellas . This is indicated in the extended state in FIG. 5.
  • FIG. 6 shows an enlarged view of a foldable mudguard 17 which is folded up in the manner of a scale or ruler.
  • the fender 17 consists of a plurality of segments 40, each of which has the desired width of the fender. In the example shown, six segments 40 are shown, of which the lowest segment is designated 42. This has an extension 44, which is provided with two holes. Similar to Figure 2, the telescopic fender is attached to the bicycle frame, the lowest segment 42 is attached to its extension 44 by means of two thumbscrews 42 and a flat bridge 33 with the connecting struts 15 on the bicycle. By mutually opening the individual segments 40, the fender 17 is brought to its desired length. Again there are additional ones Brackets 27a-d conceivable, which may not be firmly connected to the segments 40 due to the folding process. Simple, easily detachable connections, such as, for example, a clip or a snap lock are possible.
  • Two segments 40 lying on top of each other are articulated to one another via a pin 46 or a hinge.
  • the pins 46 are alternately inserted on the right and left ends by two segments 40 and riveted, so that the folding mechanism known from a folding rule results.
  • it is appropriate here, as with the folding rule to provide the segments 40 with depressions in the region of the pins 46, or to provide elevations that fit into them. This results in a snap-in effect in the case of the segment 40 which has been properly folded out and which prevents accidental folding.
  • the same latching effect can also be achieved by a suitable curvature of the segments 40, as they also have stationary mudguards.
  • the segments 40 are arranged along the wheel, with a few, relatively long segments 40 being sufficient. This is quite practical for racing bikes, but can possibly lead to difficulties for sports bikes that have a luggage rack, because there has to be a certain lateral operating margin when unfolding and folding. In this case, an embodiment according to FIG. 7 is recommended.
  • the structure and the mechanics of the segments 40 are basically the same as that from FIG. 6. The main difference is the installation of the segments 40 transversely to the wheel or to the direction of travel. As a result, somewhat more segments 40 are required with the same length of the fender, since these are shorter than in the exemplary embodiment in FIG. 6.
  • the lowest segment 42 is shortened here compared to the other segments 40. It is articulated in the middle of the bridge 33, so that the mudguard 17 is placed centrally over the wheel in the extended state is.
  • FIGS. 6 and 7 have the particular advantage that they are very robust against contamination. Coarse, stuck dirt particles, such as grains of sand or lumps of clay, are pushed aside when folded and fall off segment 40.
  • FIG. 8 shows a guide mechanism 50 which is useful in connection with the concertina-like structure from FIG. 3 if the internal stress of the fender 17 is not sufficient to maintain the curved shape permanently.
  • the segments of the fender 17 are not shown for the sake of clarity.
  • Two rails 52 with a U-shaped cross section are attached to the frame of the bicycle so that they describe the desired curvature.
  • the rails 52 can consist of several pieces that can be inserted into one another.
  • the open sides of the U-shaped cross section face each other.
  • the rails 52 serve to receive the hinges 40, which for this purpose have an edge-side projection so that they can slide freely in the rails 52. In this way, a firm guidance is achieved, e.g. is known for the blinds of a rolling cabinet.
  • the rails 52 are also useful in the spring steel similar to a tape measure mentioned later.
  • this can also be shortened and extended by other known mechanical means. So it is e.g. possible to build the fender 17 scale-like, and then push the scales into each other. Combinations of the different shortening mechanisms can also be selected.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

Une bicyclette de course (1) comprend, dans la région de la fourche avant (5) et/ou de la fourche arrière (7) ou des bases (15) des fourches, un premier dispositif de retenue (19) sur lequel peut être fixé, de préférence de manière aisément détachable, un garde-boue (17) de longueur variable. Le garde-boue (17) peut par exemple se rétracter par télescopage, de sorte que l'on puisse l'étirer (allonger) puis le rétracter (raccourcir) manuellement. Il peut également avoir la forme d'un accordéon ou d'un mètre pliant. L'avantage de ce garde-boue (17) de longueur variable consiste dans le fait qu'il ne prend sa forme fonctionnelle, pleinement allongée (17), qu'en cas de besoin, c'est-à-dire pendant des courses sous la pluie ou sur des pistes très sales. Autrement, sous sa forme rétractée, il n'est pas reconnaissable comme garde-boue (17), ce qui d'une part met en évidence la silhouette sportive de la bicyclette (1) et d'autre part oppose une moindre résistance à l'air, tout en assurant, lorsque le garde-boue est pleinement allongé, une bonne protection contre des éclaboussures.
PCT/DE1988/000677 1987-11-02 1988-11-02 Garde-boue pour bicyclettes WO1989004271A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE8714584U DE8714584U1 (fr) 1987-11-02 1987-11-02
DEG8714584.7U 1987-11-02
DEP3804690.3 1988-02-15
DE19883804690 DE3804690A1 (de) 1987-11-02 1988-02-15 Spritzschutz fuer ein fahrrad

Publications (1)

Publication Number Publication Date
WO1989004271A1 true WO1989004271A1 (fr) 1989-05-18

Family

ID=25864891

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1988/000677 WO1989004271A1 (fr) 1987-11-02 1988-11-02 Garde-boue pour bicyclettes

Country Status (3)

Country Link
EP (1) EP0349602A1 (fr)
DE (1) DE3804690A1 (fr)
WO (1) WO1989004271A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523811A1 (fr) * 1991-07-17 1993-01-20 Karl Gasser Garde-boue
US6659483B2 (en) * 2001-12-20 2003-12-09 Simon Blythe Telescoping bicycle fender
WO2013050728A1 (fr) * 2011-10-05 2013-04-11 Patrick Elson Accessoire de cycle
WO2015189269A1 (fr) * 2014-06-12 2015-12-17 Armin Kleemann Dispositif de protection contre la saleté projetée par la roue arrière d'un vélo de course

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE108502C (fr) *
DE94323C (fr) *
US617504A (en) * 1899-01-10 Robert a
US941228A (en) * 1909-06-08 1909-11-23 Walter J Chisholm Mud-guard.
US1226323A (en) * 1916-03-23 1917-05-15 Kazimir A Fialkowski Bicycle mud-guard.
GB414594A (en) * 1934-02-20 1934-08-09 George Pacileo Collapsing mudguards for a velocipede
CH201809A (de) * 1938-01-15 1938-12-15 Stoll Willi Kotschützer an Fahrrad.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE108502C (fr) *
DE94323C (fr) *
US617504A (en) * 1899-01-10 Robert a
US941228A (en) * 1909-06-08 1909-11-23 Walter J Chisholm Mud-guard.
US1226323A (en) * 1916-03-23 1917-05-15 Kazimir A Fialkowski Bicycle mud-guard.
GB414594A (en) * 1934-02-20 1934-08-09 George Pacileo Collapsing mudguards for a velocipede
CH201809A (de) * 1938-01-15 1938-12-15 Stoll Willi Kotschützer an Fahrrad.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523811A1 (fr) * 1991-07-17 1993-01-20 Karl Gasser Garde-boue
US6659483B2 (en) * 2001-12-20 2003-12-09 Simon Blythe Telescoping bicycle fender
WO2013050728A1 (fr) * 2011-10-05 2013-04-11 Patrick Elson Accessoire de cycle
US9341004B2 (en) 2011-10-05 2016-05-17 Patrick Elson Cycle accessory
WO2015189269A1 (fr) * 2014-06-12 2015-12-17 Armin Kleemann Dispositif de protection contre la saleté projetée par la roue arrière d'un vélo de course

Also Published As

Publication number Publication date
DE3804690A1 (de) 1989-05-11
EP0349602A1 (fr) 1990-01-10

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