DE102017201995B4 - Bicycle frame head tube - Google Patents

Abstract

The invention relates to a bicycle frame steering tube with a tubular body (16) for supporting a bicycle fork shaft (11) and at least one cable guide for guiding at least one bicycle cable (34) through the tubular body (16). The at least one cable guide has at least one cable inlet opening (26, 27, 28, 29) for guiding the at least one bicycle cable (34) in the tubular body (16) and at least one cable outlet opening (31, 32) for guiding the at least a bicycle cable (34) from the tubular body (16).

Description

The invention relates to a bicycle frame head tube, in particular Moutainbikerahmen control tube. Furthermore, the invention is directed to a bicycle frame, especially Moutainbikerahmen, with such a head tube. The invention is also directed to a bicycle, in particular mountain bike, comprising such a frame. The invention also relates to a guide insert for a bicycle frame steering tube and a set of a bicycle frame steering tube and at least one such guide insert.

It is well known that different operable bicycle components, such as the circuit, brake, damper, adjustable seatpost, auxiliary motor, transmission, if any, or the like, are operable by a driver. To operate the same trains, cables or cables are usually used.

The DE 20 2013 005 555 U1 discloses a device for inserting at least one elongated technical functional part, such as a Bowden cable or cable, into a frame section of a bicycle. The device is assigned an opening in the surface of the frame section. By an insert portion of the device, the functional part can enter into the interior of a control head.

From the DE 20 2007 017 669 U1 is a bicycle frame with at least partially extending within the frame trains known. The at least one train is guided over a recess in a control tube in the frame.

The CN 201 604 757 U discloses a head tube with guides for guiding cables.

The invention has for its object to provide a bicycle frame control tube with improved cable management. In particular, the at least one cable guide should perform the at least one bicycle cable extremely reliable or accurate. A bicycle frame and a bicycle with improved cable routing should also be provided. Further, a guide insert for improved cable routing in a bicycle frame steering tube and a kit including at least one such guide insert for improved cable routing are to be provided.

These objects are achieved by the features specified in claims 1, 8, 11, 12 and 13 according to the invention. The essence of the invention is that the bicycle frame control tube has at least one inner or integrated cable guide and thereby at least one bicycle cable through an interior of the bicycle frame steering tube is feasible. The at least one bicycle cable is specially protected there. It may be self-guided or unguided in the bicycle frame head tube.

The actuable bicycle component is, for example, a rear brake, a rear derailleur, a derailleur, a saddle height adjustment device, a damper, a motor or a transmission. It may in particular be a mechanical, in particular a mechanically actuated, bicycle component. It can also be an electric, in particular an electrically actuated, bicycle component. It may also be a hydraulic or pneumatic, in particular hydraulically or pneumatically actuated, bicycle component.

The bicycle cable is conveniently elongated and flexible. It is designed, for example, as an electric cable, as a train or as a hydraulic cable for the remote control of the at least one bicycle component. It is in particular actuatable by an actuating element, such as a knob or lever. The bicycle cable generally forms a means for transmitting signals, in particular a means for transmitting power. It preferably forms a longitudinally extended technical functional part. The various alternatives for this purpose are summarized below simplified referred to as cable, control cable or bicycle cable.

By the electric cable, for example, a motor-driven circuit, in particular a derailleur or derailleur, a motor-driven brake, in particular a rear wheel brake, and / or a motor-driven saddle can be actuated or adjusted by appropriate signals. For example, an actuating or adjustment button is pressed.

The cable comprises in particular a cable housing and at least one puller wire, which is guided axially displaceable in the cable housing. It is conveniently designed as a Bowden cable. The train can be actuated in particular by a lever. In particular, such a circuit, in particular a rear derailleur or derailleur, a brake, in particular a rear wheel brake, and / or a saddle can be actuated or adjusted. By the train or the at least one pull wire, a pulling force for actuating the same can be applied in particular to the bicycle component to be actuated.

The hydraulic cable conveniently comprises a pressure-tight hose for guiding a hydraulic fluid. By the hydraulic cable is in particular a circuit, in particular a rear derailleur or derailleur, a brake, in particular a rear wheel brake, and / or saddle operable or adjustable. For this purpose, an actuating or adjusting lever is conveniently actuated. By the hydraulic cable or the hydraulic fluid pressure or a pressure force for actuating the same can be applied in particular to the bicycle component to be actuated.

According to a preferred embodiment, the at least one cable inlet opening and / or cable outlet opening, in particular directly, is formed on or in the tubular body.

It is expedient if the at least one cable inlet opening is completely closed on the circumference. Preferably, the at least one cable entry opening has a shape which substantially corresponds to a cross section of the at least one bicycle cable. Conveniently, the at least one cable entry opening is slightly larger than the cross section of the at least one bicycle cable. It is expedient if the at least one cable inlet opening is circular or substantially circular. It conveniently has a diameter which is between 1 mm and 10 mm. The at least one cable inlet opening is expediently circumferentially, in particular directly, formed or arranged on the tubular body. It is preferably arranged as far outside as possible with respect to the main plane on the tubular body.

It is advantageous if at least two cable inlet openings, preferably at least three cable inlet openings, preferably four cable inlet openings, present or, in particular directly, are formed on the tubular body.

Conveniently, the at least one cable outlet opening is circumferentially completely closed. The cable outlet opening may differ in size and / or shape from the at least one cable entry opening. It can be designed in particular as a slot. It may in particular be designed such that it can accommodate more than one bicycle cable, in particular two bicycle cables one above the other.

The at least one cable outlet opening is expediently circumferentially, in particular directly, formed or arranged on the tubular body. It is preferably arranged as far outside as possible with respect to the main plane on the tubular body.

It is advantageous if two cable outlet openings present or, in particular directly, are formed on the tubular body. Conveniently, more cable inlet openings than cable outlet openings are present or formed on the tubular body. Alternatively, each cable inlet opening is assigned exactly one cable outlet opening.

The at least one cable inlet opening and the at least one cable outlet opening are arranged at a distance from one another in the tubular body. They are separated by the tubular body.

It is useful if the bicycle frame control tube forms an outer bearing housing. Preferably, at least two bearings are arranged in the bicycle frame steering tube for supporting the bicycle fork shaft or the bicycle fork. The control tube may in particular have two receptacles for receiving bearings. The recordings are arranged in particular each end of the head tube.

According to one embodiment, the at least one bicycle cable between the at least one cable inlet opening and the at least one cable outlet openings, ie in the interior of the bicycle frame control tube, at least in regions, conveniently completely free or runs there unguided. The cable entry opening and the associated cable exit opening are in particular arranged on the control tube in such a way that their straight-line connection through the interior of the control tube is completely free of overlap with the area in which the steerer tube usually extends. They are also arranged such that the cable does not drag in the state performed by the control tube on the steerer tube, especially not in a handlebar impact. This can be achieved in that the cable inlet opening and the cable outlet opening are each arranged offset from the main plane of the control tube. The cable entry opening can be arranged in particular in the outer half, in particular in the outer third of the control tube. For reasons of stability, however, the inlet opening and the outlet opening are offset relative to one another with respect to a central center axis of the control tube by at least 90 °, in particular at least 120 °.

The tubular body is formed for example of aluminum, steel, titanium, carbon or the like. It is preferably designed as a casting, forging or sintered part. Conveniently, the at least one cable inlet opening and / or cable outlet opening is formed by milling, drilling, punching, water jet cutting, laser cutting or by at least one shaped body during casting of the tubular body.

It is advantageous if the tubular body is annular in cross section. The tubular body is preferably partially frusto-conical, hollow inside, executed. Conveniently, this widens from top to bottom. Alternatively, the tubular body is hollow cylindrical. Alternatively, the tubular body is designed, for example, not rotationally symmetrical. He is then, for example, a forge.

It is advantageous if the bicycle frame control tube or the bicycle frame is symmetrical with respect to a main plane or center plane.

The bicycle frame also conveniently includes a seat tube or seat tube and a bottom bracket receptacle. According to an advantageous embodiment, a rear triangle is present.

In the assembled state, the bicycle preferably has a headset disposed in the bicycle frame head tube, a (spring) fork pivotally mounted in the headset, a stem rotatably connected to the fork, a handlebar disposed on the stem, a front wheel rotatably mounted on the fork , a rear wheel rotatably mounted on a rear frame, a seat post slidably mounted in the bicycle frame, a bottom bracket disposed in the bicycle frame, a bottom bracket rotatably mounted in the bottom bracket, two cranks arranged on the bottom bracket shaft, at least one with a crank Crank in associated sprocket, a sprocket set on the rear wheel, an endless drive chain, a derailleur, a derailleur, a derailleur actuator for operating the derailleur, a derailleur actuator for operating the derailleur, a front brake, a rear brake, a Vorderradbre mshebel to operate the front brake and / or a rear brake lever to operate the rear brake.

It is advantageous if the at least one cable entry opening for guiding the at least one bicycle cable is arranged offset laterally relative to the bicycle fork shaft with respect to a main plane of the bicycle frame control tube. This embodiment allows a particularly simple or reliable operation or adjustment of the at least one bicycle component by the at least one bicycle cable. Furthermore, such a bicycle frame steering tube is particularly easy to install. Damage to the at least one bicycle cable when using the bicycle frame head tube is also particularly safe permanently avoidable. With the aid of the laterally offset arrangement of the at least one cable entry opening, it can be ensured in particular that the bicycle cable does not grind on the bicycle fork shaft. This is especially true in a steering angle.

Preferably, the at least one cable outlet opening for guiding the at least one bicycle cable on the bicycle fork shaft is arranged laterally offset with respect to a main plane of the bicycle frame control tube. The previous version of the cable inlet opening here essentially applies analogously.

Further advantageous embodiments of the invention are specified in the subclaims.

The embodiment according to the dependent claim 2 results in a particularly accurate, in particular substantially free of play, leadership of at least one bicycle cable.

Due to the configuration according to the dependent claims 3 and 4 is certainly avoidable that scrubs the at least one bicycle cable to the bicycle fork shaft, which is particularly true in a steering angle.

An entry angle in the range of 10 ° to 35 ° relative to a center / symmetry plane of the control tube leads in particular to a particularly advantageous course of the cable. As a result, in particular unnecessary bends or bending of the cable can be avoided.

It is advantageous if the at least one cable inlet opening and the at least one cable outlet opening for forming the at least one cable guide lie on at least one straight line, which extends laterally spaced from the bicycle fork shaft.

The at least one cable entry opening conveniently has a distance from a main plane of the bicycle frame steering tube that is greater than a radius of the bicycle fork shaft. For this purpose, the control tube has an inner diameter which is larger by more than twice the diameter of the cable than the outer diameter of the bicycle cable shaft.

The control tube in particular has an inner diameter which is at least 1 cm, in particular at least 1.5 cm, in particular at least 2 cm, in particular at least 2.5 cm, in particular at least 3 cm, but usually less than 10 cm, in particular less than 8 cm , in particular less than 6 cm, is greater than the diameter of the bicycle cable shaft.

The bicycle frame steering tube according to the dependent claim 5 is particularly easy. Furthermore, it allows safe protected guidance of the at least one bicycle cable. It is advantageous if the at least one arranged adjacent to the at least one cable outlet opening Weight reduction recess is substantially larger than the at least one cable outlet opening. The at least one weight-reducing recess may be at least five times, in particular at least ten times, in particular at least twenty times, as large as the at least one cable outlet opening.

Instead of an elongated design of the at least one cable outlet opening according to dependent claim 6, for example, for each bike cable own, preferably round, cable outlet opening available. The height of the cable outlet opening preferably corresponds to the sum of the diameters of the bicycle cables received therein.

It is advantageous if the at least one cable outlet opening has a smaller distance from a main plane of the bicycle frame control tube than the at least one cable inlet opening. This embodiment allows a particularly advantageous guidance of the at least one bicycle cable in the tubular body and again out of this.

According to one aspect of the invention, the cable entry opening (s) and the respective associated cable exit openings are arranged, in particular in the control tube, such that the direct, straight-line connection from the cable entry opening (s) to the associated cable (s) The outlet opening / s is spaced from the region in the interior of the control tube, in which the bicycle fork shaft extends in a state inserted into the control tube. As a result, grinding of the bicycle cable is reliably prevented on the bicycle fork shaft, which also applies in particular to a steering angle.

The embodiment according to the dependent claim 7 is particularly advantageous in guiding the at least one bicycle cable in the down tube.

Alternatively, at least one cable inlet opening is formed or arranged lower than the at least one cable outlet opening on the tube body. It thus has a greater distance to the upper end of the bicycle frame control tube than the at least one cable outlet opening. This is particularly advantageous if the at least one bicycle cable runs in the top tube.

A guide insert, which represents an independent invention, allows a particularly good guidance of the at least one bicycle cable in the tubular body. It is advantageous if the at least one guide insert is fixed axially in / on the tubular body. Conveniently, the at least one guide insert is rotatably arranged in / on the tubular body.

It is expedient if at least one guide channel for guiding the at least one bicycle cable is formed in the at least one guide insert. The openings of the at least one guide channel are arranged according to an embodiment adjacent to the at least one cable inlet opening and / or cable outlet opening in the tubular body. Alternatively, these form, for example, the at least one cable inlet opening and / or cable outlet opening.

The at least one guide insert also acts in the inserted state favorably sealing and prevents ingress of dirt or water in the tubular body. For the at least one guide insert, for example, at least one mounting opening is formed in the tubular body. The at least one mounting opening is preferably adapted in shape and size to the at least one bicycle cable guide body.

Conveniently, an outer shape of the at least one guide insert is adapted to a shape of the at least one cable inlet opening in the head tube. It is expedient if an outer shape of the at least one guide insert is also adapted to a shape of the at least one cable outlet opening.

According to an alternative can be dispensed with in addition to a weight recess in the head tube when using the guide insert on a separate cable outlet opening. The guide insert is guided in this case through the inlet opening in the head tube and opens through the weight recess in the lower or upper tube of the bicycle frame. The weight reduction recess thus serves as a cable outlet opening. As a result, the production of the control tube is facilitated.

Preferably, the guide insert by an additional fixing means, in particular in the form of a screw on the head tube can be fixed, in particular adjustably fixed.

It is advantageous if the at least one fastening body can be inserted into the tubular body in a form-fitting or clearance-free manner or can be arranged thereon.

The at least one bicycle cable guide body is preferably formed essentially of a plastic material. It is advantageous if the at least one bicycle cable guide body is at least partially flexible, in particular flexible, is. The at least one bicycle cable guide body is conveniently elongated. It is expedient if the at least one fastening body and the at least one bicycle cable Guide body at least partially extend side by side. The at least one bicycle cable guide body preferably runs straight or unmounted originally.

The at least one fastening body preferably extends in a curved manner. In the assembled state, it is preferably at least partially outside on the tubular body. Conveniently, the at least one fastening body is designed as a tab or web. The at least one fastening body preferably prevents a passage or too far insertion of the guide insert. It thus facilitates the assembly and, in particular, predefines a defined insertion depth of the guide insert or of the at least one bicycle cable guide body into the control tube. The design with the bicycle cable guide body is particularly easy to install.

The at least one means for adjustably setting the at least one bicycle cable guide body is conveniently designed as adjusting means. It is, for example, a traction device and / or pressure medium. It preferably acts directly or indirectly on the at least one bicycle cable guide body.

Conveniently, at least one fixing means for locally fixing the at least one guide insert to the tubular body is formed in / on the tubular body on the circumference. The at least one fixing means is preferably provided for the at least one means for adjustably setting the at least one bicycle cable guiding body. As a fixing means, for example, a through hole, in particular of a bore, serve in the tubular body of the head tube.

A threaded insert in the guide insert allows infinitely variable adjustment of the at least one bicycle cable guide body or of the at least one accommodated bicycle cable relative to the bicycle fork shaft. A rotation of the threaded bolt during assembly leads to the axial displacement and thus also to the corresponding displacement of the at least one bicycle cable guide body or the at least one recorded bicycle cable away from the bicycle fork shaft. A grinding of the at least one bicycle cable guide body or the at least one bicycle cable to the bicycle fork shaft is so safely prevented, which is especially true in a steering angle. Conveniently, so is the at least one bicycle cable clamped locally fixed.

The thread is preferably formed in a separate, in particular metallic, threaded insert. Alternatively, it may also be formed directly in the at least one bicycle cable guide body.

In a bicycle frame with a head tube according to the preceding description, the at least one bicycle cable is particularly protected. Furthermore, such unfavorable deflections thereof are extremely easy to avoid. The frame tube is, for example, a top tube or down tube.

• 1 eine Seitenansicht eines erfindungsgemäßen Fahrradrahmens, an dem eine Fahrradgabel drehbar gelagert ist,
• 2 eine perspektivische Teilansicht des Fahrradrahmens gemäß 1, bei dem das Fahrradrahmen-Steuerrohr und ein Unterrohr zur Veranschaulichung einer Kabelführung teilweise aufgeschnitten dargestellt sind,
• 3 eine perspektivische Teilansicht des Fahrradrahmens gemäß 1, die das Fahrradrahmen-Steuerrohr und zwei sich an dieses anschließende Rahmenrohre teilweise aufgeschnitten zeigt,
• 4 eine 3 ähnelnde Ansicht, wobei auch das Fahrradrahmen-Steuerrohr aufgeschnitten dargestellt ist,
• 5 eine rückseitige Ansicht des in 1 bis 4 dargestellten Fahrradrahmen-Steuerrohrs,
• 6 eine perspektivische Ansicht des in 1 bis 5 dargestellten Fahrradrahmen-Steuerrohrs von schräg hinten,
• 7 eine im Wesentlichen 4 entsprechende Schnittansicht, wobei hier außerdem vorteilhafte, noch unmontierte Schutzkörper zum Einsatz in die Kabel-Eintrittsöffnungen und Kabel-Austrittsöffnungen vorgesehen sind,
• 8 einen Horizontalschnitt durch ein Steuerrohr mit Schutzkörpern entsprechend 7 und durchgeführten Kabeln zur Verdeutlichung eines exemplarischen Verlaufs derselben,
• 9 eine perspektivische Ansicht eines Führungseinsatzes gemäß einer alternativen Ausführungsform für ein erfindungsgemäßes Fahrradrahmen-Steuerrohr,
• 10, 11 perspektivische Ansichten, die den in 9 dargestellten Führungseinsatz in montiertem Zustand zeigen,
• 12 eine Schnittansicht, die den Führungseinsatz gemäß 9 bis 11 in eingesetztem Zustand veranschaulicht,
• 13 eine 12 entsprechende Schnittansicht, wobei der Fahrradkabel-Führungskörper durch Betätigung des Zugmittels von dem Fahrradgabel-Schaft weg verlagert ist.

Hereinafter, preferred embodiments of the invention will be described by way of example with reference to the accompanying drawings. Showing:

• 1 a side view of a bicycle frame according to the invention, on which a bicycle fork is rotatably mounted,
• 2 a partial perspective view of the bicycle frame according to 1 in which the bicycle frame head tube and a down tube are shown partially cut away to illustrate a cable guide,
• 3 a partial perspective view of the bicycle frame according to 1 showing the bicycle frame head tube and two partially cut to this subsequent frame tubes,
• 4 a 3 similar view, wherein the bicycle frame control tube is shown cut open,
• 5 a back view of the in 1 to 4 illustrated bicycle frame steering tube,
• 6 a perspective view of the in 1 to 5 illustrated bicycle frame head tube obliquely from behind,
• 7 one essentially 4 corresponding sectional view, which also advantageous, yet unmounted protective body are provided for use in the cable inlet openings and cable outlet openings,
• 8th a horizontal section through a head tube with protective bodies accordingly 7 and performed cables to illustrate an exemplary course of the same,
• 9 a perspective view of a guide insert according to an alternative embodiment of a bicycle frame head tube according to the invention,
• 10 . 11 perspective views corresponding to the in 9 shown guide insert in the assembled state,
• 12 a sectional view showing the guide insert according to 9 to 11 illustrated in the inserted state,
• 13 a 12 corresponding sectional view, wherein the bicycle cable guide body is displaced away by actuation of the traction means of the bicycle fork shaft.

Referring first to 1 includes a trained as a mountain bike frame bicycle frame 1 a head tube 2 and one of the head tube 2 against a direction of travel 3 rearward top tube 4 and one of the head tube 2 against the driving direction 3 rear down tube 5 , The top tube 4 is above the down tube 5 arranged.

To the top tube 4 and the down tube 5 closes a seat tube 6 of the bicycle frame 1 at. The top tube 4 falls from the head tube 2 starting in the direction of the seat tube 6 from. Also the down tube 5 falls from the head tube 2 starting in the direction of the seat tube 6 from. Other frame structures are alternatively possible.

Between the down tube 5 and the seat tube 6 is a substantially cylindrical bottom bracket 7 on the bicycle frame 1 educated.

The bicycle frame 1 is for example made of aluminum, steel, titanium, carbon or a combination of these materials. It extends in a main plane and conveniently the bicycle frame 1 essentially symmetrical with respect to the main plane.

In an assembled state of the bicycle frame 1 enclosing bicycle (not shown) is in the bottom bracket 7 a bottom bracket (not shown) used in which a bottom bracket (not shown) is rotatably mounted. On the bottom bracket cranks (not shown) are arranged on both sides. With one of the cranks are different sized chainrings (not shown) rotatably connected.

Adjacent to the bottom bracket 7 is on the bicycle frame 1 a derailleur (not shown) for displacing a drive chain (not shown) on the adjacent chainring.

The bicycle also has a sprung rear triangle (not shown) according to the embodiment shown. The bicycle frame 1 is executed here as Viergelenker. The rear triangle includes a lower chainstay adjacent to the bottom bracket mount 7 on the seat tube 6 is articulated. This is on the seat tube 6 a lower chainstay bearing mount 8th educated. The rear triangle also has an upper seat stay hingedly connected to the chain stay and a link to the seat tube 6 is articulated. This is on the seat tube 6 a corresponding bearing support 10 educated. A damping unit (not shown) is between the bicycle frame 1 and the seat stay arranged. For the down tube has 5 a corresponding damping unit connection point 9 , Alternatively, another sprung rear suspension system is available. Alternatively, a rigid or unsprung rear triangle exists.

The lower chain stay and the upper seat stay are spaced from the bicycle frame 1 connected with each other. On the seatstay a rear wheel or rear wheel (not shown) is rotatably mounted, which has a central hub, a rim and between the hub and the rim extending spokes. At the hub a sprocket assembly is rotatably mounted.

At the rear of a rear derailleur for switching the drive chain is also arranged on different sprockets of the sprocket assembly.

The drive chain is guided around the chainrings and the sprocket set.

In the seat tube 6 is in the assembled state of the bicycle, a seat post (not shown) is used, the above a saddle (not shown) carries. The seat post is saddle height adjustable by a saddle height adjustment (not shown) in height.

The bicycle also has an actuatable rear brake (not shown) for braking the rear wheel. Further, the bicycle has an actuatable front brake (not shown) for braking a front wheel (not shown).

In the assembled state of the bicycle is in the head tube 2 a bicycle fork shaft 11 a bicycle fork around its central central axis 12 rotatably mounted. The suspension fork shaft 11 is circular or circular in cross section. He is preferably partially frusto-conical. The bicycle fork shaft 11 is rotatable with a bicycle fork bridge 13 connected, the two spaced apart and mutually parallel bicycle fork stanchions 14 wearing. The bicycle fork stanchions 14 stand with bicycle fork dip tubes 15 in telescopic connection. The bicycle fork stanchions 14 can be resilient in the bicycle fork dip tubes 15 Push. Other forks can be used alternatively.

At the bicycle fork dip tubes 15 the front wheel is rotatably mounted, which in turn a Hub, a rim and extending between these spokes.

On the bicycle fork shaft 11 is above the head tube 2 a stem (not shown) attached, which in turn carries a handlebar (not shown).

On the handlebar, a front brake lever (not shown) for actuating the front brake is arranged. Further, a rear wheel brake lever (not shown) for operating the rear wheel brake is arranged on the handlebar. Further, a shift lever (not shown) for operating the derailleur is arranged on the handlebar. Further, a shift lever (not shown) for operating the derailleur is arranged on the handlebar. Furthermore, an actuating element (not shown) for actuating the saddle height adjustment device is arranged on the handlebar.

The following is also with reference to the 2 to 6 the head tube 2 explained in more detail.

The head tube 2 has a tubular body 16 which is circular in cross-section and one with the central axis 12 of the bicycle fork shaft 11 aligned central axis 17 Has. The head tube 2 is also with respect to a plane of symmetry 22 Symmetrically executed, in which also the central axis 17 extends.

The pipe body 16 turn, has a lower, the bicycle fork bridge 13 facing end 18 and an upper end 19 on. Adjacent to the bottom 18 is on the pipe body 16 a lower bearing support 20 formed while adjacent to the upper end 19 on the tubular body 16 an upper bearing support 21 is trained. The pipe body 16 limited laterally an interior 23 ,

In the assembled state of the bike is in the lower bearing mount 20 a lower bearing device (not shown) used. In particular, the lower bearing device is there with its outer ring in the tubular body 16 pressed. In the upper bearing receiver 21 an upper bearing device (not shown) is used. The upper bearing device is in particular there in the tubular body 16 pressed in with its outer ring. The storage facilities are with their inner rings on the bicycle fork shaft 11 arranged for rotatably supporting the same. The pipe body 16 runs spaced around the bicycle fork shaft 11 ,

The head tube 2 has a lower weight reduction recess on the back 24 that the pipe body 16 completely penetrated and into the down tube 5 empties. The lower weight reduction recess 24 thus forms a connection between the interior 23 of the head tube 2 and that of the down tube 5 ,

Furthermore, the head tube has 2 an upper weight reduction recess on the back 25 that the pipe body 16 completely penetrated and in the top tube 4 empties. The upper weight reduction recess 25 thus forms a connection between the interior 23 of the head tube 2 and that of the top tube 4 ,

The weight reduction recesses 24 . 25 are each circumferentially closed. They are along the central axis 17 spaced apart from each other. They each extend over an angular peripheral area around the central axis 17 from 30 ° to 120 °.

The head tube 2 also has a first lower cable entry opening 26 , a second lower cable entry opening 27 , a first upper cable entry opening 28 and a second upper cable entry opening 29 , These are identical and separate from each other in the tubular body 16 educated.

Between the first cable entry openings 26 . 28 and the second cable entry openings 27 . 29 runs the plane of symmetry 22 , Each cable entry opening 26 to 29 passes through the tubular body 16 completely and flows into the interior 23 of the head tube 2 , The cable entry openings 26 to 29 are each on the front side of the tubular body 16 educated. They are essentially opposite the top tube 4 or down tube 5 arranged. They are in a lower half of the tubular body 16 arranged.

The first lower cable entry opening 26 and the first upper cable entry opening 28 are superimposed on the tubular body 16 arranged while the second lower cable entry hole 27 and the second upper cable entry opening 29 one above the other on the tubular body 16 are arranged. The first lower cable entry opening 26 and the second lower cable entry opening 27 lie at a common height starting from the lower end 18 of the tubular body 16 , The first upper cable entry opening 28 and the second upper cable entry opening 29 lie at a height starting from the lower end 18 of the tubular body 16 ,

Each cable entry opening 26 . 27 . 28 . 29 has a width BE.

The lower weight reduction recess 24 is essentially hourglass-shaped. Adjacent to their two opposite bottlenecks 30 has the head tube 2 two cable outlets 31 . 32 that the pipe body 16 completely penetrate the circumference and into the down tube 5 lead. The cable outlet openings 31 . 32 are identically formed and thus provide a connection between the interior 23 and the down tube 5 ago. They are adjacent to the lower weight reduction recess 24 towards this through a boundary web 33 of the tubular body 16 limited.

Each cable outlet 31 . 32 is designed as a slot and extends longitudinally in the direction of the central axis 17 , Each cable outlet 31 . 32 has along the central axis 17 a height H and perpendicular to the central axis 17 a width BA. The following applies: 1.5 ≤ H / BA ≤ 3. Each cable outlet 31 . 32 has a distance AA to the plane of symmetry 22 ,

The first cable outlet 31 lies on the same side of the symmetry plane 22 like the first cable entry openings 26 . 28 while the second cable outlet 32 on the same side of the symmetry plane 22 like the second cable entry openings 27 . 29 lie.

The cable outlet openings 31 . 32 are at a common height starting from the lower end 18 of the tubular body 16 arranged. They are below the upper cable entry openings 28 . 29 on the tubular body 16 arranged. They essentially end at the height of the lower cable entry openings 26 . 27 and extend toward the lower bearing seat 20 ,

Between the lower cable entry openings 26 . 27 There is a distance that is greater than the prevailing outer diameter there D of the bicycle fork shaft 11 is and in particular at least 25 mm, in particular at least 28 mm. Between the upper cable entry openings 28 . 29 There is a distance that is greater than the prevailing outer diameter there D of the bicycle fork shaft 11 is and in particular at least 25 mm, in particular at least 28 mm.

Between the cable outlet openings 31 . 32 is a distance WA, which is smaller than the prevailing outer diameter there D of the bicycle fork shaft 11 is. The distance WA the cable outlet openings 31 . 32 is in particular smaller than the diameter of the top tube 4 and / or the down tube 5 , It is preferably smaller than 30 mm.

The distance WA between the cable outlet openings 31 . 32 is in particular smaller than the distance between the associated cable inlet openings 26 . 28 respectively. 27 . 29 , This leads to a particularly advantageous course of the bicycle cable 34 in the interior 23 of the head tube 2 , The bicycle cables 34 run in particular substantially straight unguided from the respective cable inlet opening 26 to 29 to the associated cable outlet opening 31 ,

The cable entry openings 26 to 29 can be closed by means of closure elements, in particular in the form of caps and / or elastic elements. As a result, on the one hand the appearance of the head tube 2 and thus the look of the bicycle frame 1 as a whole, in the event that not all of the cable entry openings 26 to 29 for carrying bicycle cables 34 be used to be improved. In addition, the head tube 2 in this way against the ingress of moisture and / or dirt into the interior 23 to be protected. In principle, it is also possible, the cable outlet openings 31 . 32 close with appropriate closure elements.

Through the four cable entry openings 26 to 29 and the two cable outlets 31 . 32 a total of four cable guides are formed.

Through the first lower cable entry opening 26 and the first cable outlet 31 is for example a first bicycle cable 34 led, for example, runs to the derailleur and is in communication with a corresponding lever. The first bicycle cable 34 has an outside diameter Q , The following applies: 1.0 ≤ H / Q ≤ 6. Furthermore, BE ≈ Q and BA ≈ Q.

Through the first upper cable entry opening 28 and the first cable outlet 31 For example, according to a second bicycle cable (not shown) out, for example, runs to the rear brake and is in communication with the rear brake lever.

Through the second lower cable entry opening 27 and the second cable outlet 32 For example, according to a third bicycle cable (not shown) out, which runs to the rear derailleur and is in communication with a corresponding shift lever.

Through the second upper cable entry opening 29 and the second cable outlet 32 For example, according to a fourth bicycle cable (not shown) out, which serves to adjust the seat post and is in communication with a corresponding actuator.

The cable entry openings 26 . 27 . 28 . 29 are arranged or formed such that the bicycle cables 34 an entrance angle we into the tubular body 16 in the range of 0 ° to 45 °, in particular in the range of 10 ° to 35 ° with the plane of symmetry 22 include and spaced at the bicycle fork shaft 11 pass by (see 8th ).

The cable entry openings 26 . 27 . 28 . 29 are in particular at a distance d to the plane of symmetry 22 arranged, which is greater than half of the outer diameter D of the bicycle fork shaft 11 ,

The cable entry openings 26 . 27 . 28 . 29 are arranged in particular in an angle range between 1 o'clock and 3 o'clock or between 9 o'clock and 11 o'clock. Here, the plane of symmetry runs 22 along the 0 o'clock-6 o'clock line through the tubular body 16 ,

The entrance angle we is on the one hand by the orientation of the cable inlet openings 26 . 27 . 28 . 29 , on the other hand by the entry position of the bicycle cable 34 that is the position of the cable entry openings 26 . 27 . 28 . 29 in the tube body 16 established. The entrance angle we can in particular depending on the position of the cable inlet openings 26 . 27 . 28 . 29 to get voted.

Preferably, the bicycle cables 34 in the area of cable entry openings 26 . 27 . 28 . 29 one on the plane of symmetry 22 to ongoing events. Here is the course of the bicycle cable 34 each viewed from the inlet opening to the associated outlet opening.

According to an alternative may also be provided, the inlet openings less widely spaced from the plane of symmetry 22 in the tube body 16 to arrange. In this case, the cable entry openings 26 . 27 . 28 . 29 designed so that the bicycle cables 34 an entrance angle we into the tubular body 16 have, which in the direction of the bicycle cable 34 from the plane of symmetry 22 shows away. Preferably, in this case, the associated cable outlet openings 31 . 32 at a distance to the plane of symmetry 22 arranged, which is greater than half the outer diameter D of the bicycle fork shaft.

According to a further alternative can be provided, the cable inlet openings 26 . 27 . 28 . 29 and arrange the associated outlet openings such that the bicycle cables 34 essentially rectilinear, in particular parallel to the plane of symmetry 22 , run.

In each cable outlet 31 . 32 lie two bicycle cables 34 one above the other. The bicycle cables 34 are identical but can be different. They are conveniently located in the cable entry ports 26 to 29 and cable outlets 31 . 32 slidably guided.

Every bicycle cable 34 runs between the respective cable inlet opening 26 to 29 and the associated cable outlet opening 31 . 32 in the tubular body 16 straight and unguided and spaced from the bicycle fork shaft 11 , so it's on the bicycle fork shaft 11 does not grind. It runs from the respective cable entry opening 26 to 29 to the associated cable outlet opening 31 . 32 downward. The through the different cable outlet openings 31 . 32 guided bicycle cable 34 run from the respective cable entry opening 26 to 29 from one another towards or in the direction of the plane of symmetry 22 ,

According to an alternative, not shown embodiment, the cable outlet openings open 31 . 32 in the top tube 4 , The cable entry openings 26 to 29 are then conveniently in the upper half of the tubular body 16 educated.

As 7 is in accordance with this preferred embodiment in every second lower cable entry opening 27 a first entry protection body 35 and in every other upper cable entry opening 29 a second entry protection body 36 used. In each cable outlet 32 is an exit protection body 37 used. The protective body 35 . 36 . 37 are preferably formed from one, in particular flexible, plastic material.

The entry protection body 35 . 36 are identical. They each have a protective tube piece 38 respectively. 39 which is annular in cross section. Through each protective tube piece 38 . 39 is exactly a bicycle cable 34 passed. Each protective tube piece 38 . 39 has an inside diameter that is essentially the outside diameter Q of the respective bicycle cable 34 equivalent.

In each protective tube piece 38 . 39 outside is an annular groove 40 respectively. 41 educated. By means of the annular groove 40 respectively. 41 are the entry protection bodies 35 . 36 on the tubular body 16 locatable. The cable entry openings 27 . 29 bounding wall of the tubular body 16 then grips into the respective annular groove 40 . 41 , in particular a form-fitting, a. Furthermore, each entry protection body 35 . 36 a head 42 respectively. 43 , the opposite of the respective protective tube piece 38 . 39 forming an abutment shoulder 44 respectively. 45 jumps to the side outside.

When assembled, the abutment shoulders are located 44 . 45 on the outside of the tubular body 16 while the protective tube pieces 38 . 39 the cable entry openings 27 . 29 or the tubular body 16 enforce completely there, so that is excluded that by the respective protective tube piece 38 respectively. 39 guided bicycle cables 34 with the tubular body 16 at the cable entry openings 27 . 29 get in contact and so can chafe there. The entry protection body 35 . 36 also act sealing and prevent, for example, entry of dirt or water in the tubular body 16 ,

The exit protection body 37 is similar to the entry protection body 35 . 36 executed. Its shape is due to the shape of the cable outlet 32 customized. He is thus oblong in cross section. He has a cross-sectionally elongated piece of protective tube 46 with rounded ends and a head 47 as well as a circumferential retaining bar 48 , The protective pipe piece 46 has an inner width equal to the outer diameter Q of the bicycle cable 34 equivalent.

In the assembled state, the cable outlet opening engages 32 bounding wall of the tubular body 16 between the jetty 48 and head 47 in the exit protection body 37 one. The head 47 lies on the outside of the tubular body 16 at. The protective pipe piece 46 passes through the cable outlet opening 32 or the tubular body 16 completely there. In the exit protection body 37 are at least two bicycle cables 34 arranged one above the other.

The following is with reference to the 9 to 13 a leadership assignment 49 for the head tube 2 described, according to a preferred embodiment in the head tube 2 can be used. This includes according to this embodiment exactly one elongated flexible bicycle cable guide body 50 with two separate, superimposed, circular in cross-section guide channels 51 . 52 , In every guide channel 51 . 52 is exactly a bicycle cable 34 received. Each guide channel 51 . 52 has a diameter that is the outer diameter Q of the bicycle cable 34 equivalent.

At one end of the bicycle cable guide body 50 is exactly a fixing body 53 arranged. The fastening body 53 is designed as a curved, in particular dimensionally stable or flexible, tab. The curvature of the fastening body 53 preferably corresponds substantially to a radius of the tubular body 16 , The bicycle cable guide body 50 and the fastening body 53 extend adjacent to each other. The fastening body 53 extends over 30% to 70% of a longitudinal extent of the bicycle cable guide body 50 , The fastening body 53 extends in particular over an angular range of 10 ° to 150 °, in particular over an angular range of 20 ° to 120 °, in particular an angular range of 30 ° to 90 °. The angular range here refers to the outer circumference of the tubular body 16 seen from its central longitudinal axis.

At a free end of the fastening body 53 is in the fastening body 53 a threaded headstock 54 educated.

In the bicycle cable guide body 50 is a threaded insert 55 arranged in the manner of a sleeve, socket, plate or the like. The threaded insert 55 Can also be used as a thread in the bicycle cable guide body 50 be educated.

The threaded insert 55 is preferably made of metal, in particular of aluminum, stainless steel or titanium. It is preferably in the bicycle cable guide body 50 injected. According to an alternative, the threaded insert 55 in the bicycle cable guide body 50 interchangeable.

The threaded insert 55 is between ends of the bicycle cable guide body 50 arranged. He has a cylindrical recess. In a recess of the limiting wall of the threaded insert 55 is an internal thread formed. The threaded insert 55 is conveniently between the guide channels 51 . 52 in the bicycle cable guide body 50 arranged. He has one of the threaded headstock 54 facing abutment shoulder 59 in the bicycle cable guide body 54 is embedded. The threaded insert 55 is so in the bicycle guide body 50 established.

In the threaded insert 55 or its internal thread is a threaded screw 56 screwed. In the threaded screw head receptacle 54 is a head 57 the threaded screw 56 received. The threaded screw 56 has a length that is smaller than a difference between outer tube body radius and bicycle fork stem radius. On the other hand, has the threaded screw 56 a length which is at least as great as the distance from an outside of the tubular body 16 to the nearest connecting line between a cable entry opening and the associated cable exit opening. The length of the threaded screw 56 In particular, it is at least as large that it fits with the internal thread of the threaded insert 55 engages.

In the assembled state of the fastening body is located 53 on the outside of the tubular body 16 while the bicycle cable guide body 50 across completely through the tubular body 16 into the down tube 5 extends.

Through each guide channel 51 . 52 a bicycle cable is running 34 , Every bicycle cable 34 enters the respective guide channel 51 . 52 at a connection point between the fastening body 53 and bicycle cable guide body 50 one. There has the leadership assignment 49 corresponding cable entry openings. Opposite to this is the leadership assignment 49 corresponding cable outlet openings. A scouring of the bicycle cables 34 on the tubular body 16 is so excludable.

The threaded screw 56 passes through the wall of the tubular body 16 completely via a circumferential opening formed there 58 , It is substantially radial with respect to the central axis 17 and is adapted in shape and size to a threaded shaft. The head 57 the threaded screw 56 is in the threaded headstock 54 added. The threaded screw 56 engages from the outside in the threaded insert 55 one that is inside the tubular body 16 located and with the threaded headstock 54 flees. The threaded insert 55 is spaced from the bicycle fork shaft 11 arranged. The threaded insert 55 is in particular in the region of a connecting line between the passage opening 58 and the bicycle fork shaft 11 arranged. This makes it particularly reliable to ensure that the leadership use 49 at least after screwing in the threaded screw 56 in the threaded insert 55 not on the bicycle fork shaft 11 scrubs, but spaced to this through the tubular body 16 of the head tube 2 runs.

By tightening the threaded screw 56 over their head 57 is the bicycle cable guide body 50 at the threaded insert 55 to the head shot 54 outward flexible. The threaded screw 56 engages over the threaded insert 55 on the bicycle cable guide body 50 at. The bicycle cable guide body 50 is so including the recorded bike cable 34 from the bicycle fork shaft 11 infinitely removable. He is going through the threaded screw 56 pulled out. In particular, it can be pulled so far outward that it is on the inside of the tubular body 16 at least partially applied. The bicycle cable guide body 50 then runs curved and nestles inside the pipe body 16 at. The bicycle cables 34 are secured by the tightening against shifting by clamping. An adjustable setting is so possible. The leadership assignment 49 is so on the tubular body 16 established. The threaded screw 56 is dimensioned such that its foot is always spaced from the bicycle fork shaft 11 ends.

According to one alternative, there are two leadership missions 49 in the head tube 2 intended. The leadership missions 49 are in particular symmetrical to a median plane of the head tube 2 arranged.

According to another alternative, the two guide inserts 49 be connected to each other by a connecting element. In particular, they can also be formed in one piece. For this purpose, a connecting element, which is in the head tube 2 inserted state of the leadership use 49 along the front of the head tube 2 extends, in particular on the head tube 2 is present, be provided.

Claims (13)

Bicycle frame steering tube (2), a) with a tubular body (16) for supporting a bicycle fork shaft (11) and with at least one cable guide for guiding at least one bicycle cable (34) through the tubular body (16), b) wherein the at least one cable guide has i) at least one cable inlet opening (26, 27, 28, 29) for guiding the at least one bicycle cable (34) in the tubular body (16), and ii) at least one cable outlet opening (31, 32) for guiding the at least one bicycle cable (34) out of the tubular body (16), c) wherein in the tubular body (16) on the circumference at least one passage opening (58) for a means (56) for adjustable setting of a guide insert (49) is formed. Bicycle frame control tube (2) according to Claim 1 , characterized in that the at least one cable inlet opening (26, 27, 28, 29) has a width (BE) which substantially corresponds to a diameter (Q) of the at least one bicycle cable (34). Bicycle frame control tube (2) according to Claim 1 or 2 , characterized in that the at least one cable entrance opening (26, 27, 28, 29) has a bicycle cable entrance angle (we) of 0 ° to 45 °, in particular of 10 ° to 35 ° with a main plane (22) of the bicycle frame Head tube (2) in the tubular body (16) pretends. Bicycle frame control tube (2) according to one of the preceding claims, characterized in that the at least one cable inlet opening (26, 27, 28, 29) and the at least one cable outlet opening (31, 32) in such a way laterally with respect to a main plane (22) of the bicycle frame steering tube (2) are staggered so that the at least one bicycle cable (34) passes the carriage fork shaft (11) at an unguided distance. A bicycle frame steering tube (2) according to any one of the preceding claims, characterized in that the tubular body (16) comprises at least one weight reduction recess (24), the at least one cable outlet opening (31, 32) adjacent to the at least one weight reduction recess (24). is arranged and at least partially spatially limited by a boundary web (33) to this. Bicycle frame control tube (2) according to one of the preceding claims, characterized in that the at least one cable outlet opening (31, 32) is elongate and has a height (H) and a width (BA), where: 1.5 ≤ H / BA ≦ 6, more preferably 1.5 ≦ H / BA ≦ 3. Bicycle frame control tube (2) according to one of the preceding claims, characterized in that at least one cable inlet opening (26, 27, 28, 29) has a smaller distance to an upper end of the bicycle frame control tube (2) than the at least one cable outlet opening (31, 32). Guide insert (49) for a bicycle frame control tube (2) according to one of Claims 1 to 7 comprising: a) at least one bicycle cable guide body (50) for guiding at least one bicycle cable (34), and b) at least one means (56) for adjustably fixing the at least one bicycle cable guide body (50) in the interior of a tubular body (16). Leadership (49) according to Claim 8 characterized in that the means (56) for adjustably fixing the at least one bicycle cable guide body (50) in the interior of the bicycle frame steering tube (2) comprises a threaded insert (55). Leadership (49) according to Claim 9 characterized in that the threaded insert (55) is formed as a metal part injected into the bicycle cable guide body (50). Set of a bicycle frame control tube (2) according to one of Claims 1 to 7 and at least one guide insert (49) according to one of Claims 8 to 10 , Bicycle frame (1) with a bicycle frame control tube (2) according to one of Claims 1 to 7 , Bicycle, especially mountain bike, with a bicycle frame (1) after Claim 12 ,

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