DE102017116011B3 - Thru axle for two-wheelers - Google Patents

Abstract

The invention relates to the field of wheel axles for two-wheelers. In particular, the invention relates to an impeller axle for a bicycle, which is designed as a plug-in axle and has a quick-release mechanism.
The quick-release system according to the invention comprises a plug-in axis (1) having a first end (2) and a second end (5), and a movable closure mechanism (8) which is arranged in the region of the dropout provided for receiving the second end (5) and a Opening (12) which is pluggable on a locking portion (6), so that the plug-in axis (1) by means of positive cooperation between a second clamping surface (7) and the closure mechanism (8) in the axial direction is securable. The locking mechanism (8) can be plugged onto the locking area (6) from the radial direction, and the locking mechanism (8) is arranged in a housing (9) in which it can be guided between a locking position and a release position.

Description

introduction

The invention relates to the field of wheel axles for two-wheelers. In particular, the invention relates to an impeller axle for a bicycle, which is designed as a plug-in axle and has a quick-release mechanism.

State of the art and disadvantages

Wheels for two- such as driving or motorcycles typically consist of a tire mounted on a rim, and arranged in the center of the impeller hub. Rim and hub are connected by means of spokes or discs. The hub in turn comprises a hub body, on the outside of the spokes or discs are fixed, and an inner axis about which the mostly ball-bearing hub body can rotate freely. The axle is connected to the bicycle by its two ends, between which the hub body sits, are attached to the dropouts of the fork or the rear end. Thus, one part of the impeller (the axle) is fixedly connected to the frame, while another part (hub body with rim) can rotate.

To attach the hub between the dropouts different constructions are known.

Simple solutions have a solid axis passing through the hub with threads at both ends. The solid axle also has turned or provided by lock nuts heels, which bear against the insides of the dropouts. By tightening the outer nuts, the dropouts between the outer nut and the respective paragraph are clamped so that the desired attachment is achieved. A disadvantage of these solutions is often high weight, associated with the time required for release with a tool. By using wing nuts can be dispensed with the entrainment of tools on trips, but the risk of injury is then higher, since the wing nuts protrude laterally from the axle area.

To shorten the time for attaching or detaching the hub, so-called quick-release systems are known from the prior art. These have as the main components of a usually quite thin, internal clamping axis, at the first end of a clamping lever is attached with eccentric. On the eccentric hub side, a thrust washer, which provides a first, pointing to the dropout clamping surface. At the second end there is a thread on which an abutment can be screwed. The abutment provides a second clamping surface, which is directed against the first clamping surface. By moving the clamping lever, the thrust washer is pushed in the direction of the second end. The two clamping surfaces approach each other. Since they rest on the outer sides of the dropouts, and between the dropouts a fixed hollow axis of the hub, through which the clamping axis is feasible, is arranged, the hollow shaft between the insides of the dropouts is clamped. To solve the reverse procedure. To remove the hub, the dropouts usually have downwardly facing slot-like recesses, so that the clamping axis can remain in the hollow axle when the impeller is removed. Otherwise (with holes in the dropouts), the tensioning axle must be pulled out of the hollow axle after loosening the counterpart.

In cases in which the stability of the fork or the rear end should be particularly high, for example in the case of the use of suspension forks or rear end suspensions, said holes are preferred to slot-like recesses. The axes then called thru axles are inserted through the opening in the first dropout, the hollow axle of the hub, and finally the opening of the second dropout. Finally, a fixation must be made. This is done in the simplest case by screwing an abutment at the second end of the axle, or by providing a thread in the bore of the second dropout, in which the thru-axle with its second end can be screwed. However, this procedure is time-consuming and therefore particularly in the racing sector, where the shortest possible change times are highly desirable disadvantageous.

Therefore, quick release systems are also known for said thru axles, which should allow a tool-free and rapid attachment and detachment or fastening of the impeller.

In the publication GB 2 414 971 A discloses a quick release system having a locking mechanism at its second end in the manner of a bayonet closure. By rotating the thru-axle about its longitudinal axis, for example by 90 degrees, the second end is locked in the abutment; it is unlocked again by opposite rotation. A comparable construction is in the document AU 2014271226 A1 disclosed. However, contaminates the opening in the abutment, which may be the case especially for mountain bikes, the functionality of the locking mechanism may be limited. In addition, the construction of a bayonet closure requires that the axis and abutment are guided in a specific position to each other, so that a snap is possible. This position is mostly through Try and find out, which is time consuming. Markers that determine the correct position can easily become dirty and therefore difficult to recognize.

Another solution is in the document WO 2009 153 038 A1 proposed. Here, the thru axle does not require a specially designed abutment, but includes itself all relevant components for the function. At its second end a multiple slotted area is arranged, which is expandable by axial tensile stress. The tensile forces are provided in the way of folding over the clamping lever via a guided through the hollow shaft traction axis. In the expanded state, the second end no longer fits through the opening of the corresponding dropout, so that clamping of the hollow axle between the insides of the dropouts is made possible. The expandable area can also be present at both ends of the thru-axle, as in the publication US 2005/0 110 335 A1 shown.

A comparable, also one-piece solution suggests the publication US 2009/0 140 571 A1 in front. Again, a coronary region is present, which protrudes in the ground state on the diameter of the thru-axle and so can not be pulled out of the second dropout, but provides the second contact surface. By compressing by means of a ferrule, this area is reduced in diameter to the diameter of the plug-in axis, so that then a withdrawal from the dropouts and the hollow shaft of the hub is made possible. It is necessary that the inner diameter of the openings of the dropouts as well as the hollow axis of the hub remains approximately the same. If this enlarged, the coronary area would fanned out again, because a compression is no longer possible, as soon as the area and thus the ferrule from the outside are no longer accessible. To overcome this problem, the sleeve can be fixed in the compressed state by means of relative rotation to the body of the axle; the coronary area then retains the tapered diameter. However, setting the correct angle of rotation for fixation requires a certain amount of tact. In addition, the mechanism used for fixing is sensitive to contamination. Also, the internal structure is relatively complicated.

From the European application with the application number EP16186398 discloses a system for releasably, tool-free attaching a thru axle for a bicycle. In this case, the plug-in shaft is inserted axially with its one end into a corresponding counterpart and there releasably locked. However, the counterpart can be easily polluted and thus limited in its functionality.

Object of the invention and solution

The invention is therefore an object of the invention to provide a quick release system for thru axles, which is easy and safe to use. It should also be insensitive to contamination and as simple as possible.

The object is achieved by a device according to claim 1. Advantageous embodiments can be found in the dependent subclaims, the following description and the figures.

description

The quick release system is used to attach the hub of an impeller between the dropouts of the fork or the rear end of a two-wheeler. It is clear that the invention also applies to vehicles such as e.g. Lying, load or disabled wheels, which may have more than two wheels, can be used.

The quick-release system initially comprises a thru-axle. The thru axle is adapted to absorb tensile forces that are introduced between its two ends. It is also preferably adapted to absorb pressure forces, at least to a small extent, since otherwise it would be difficult to insert into the corresponding openings of the dropouts and the hollow axle of the hub.

At a first end of the plug-in axis, a "device for applying axial compressive forces" is arranged or can be arranged. This device therefore has the function of providing pressure forces which are required for clamping the hollow axle. Typically, this device is a lever with eccentric. Alternatively, the device can also be designed as a screw or bayonet-like connected to the plug-in axis. Then the clamping operation is not performed by turning a lever, but by turning the screw. It is only essential that said pressure forces can be provided by means of the device. Typically, these result from an axial displacement of a dropout-facing outside of the device.

This outside is referred to herein as a "first clamping surface". The first clamping surface may for example be part of the aforementioned eccentric. But it can also be the dropout side facing a thrust washer. Preferably, such a thrust washer is then made of a material on which the possibly existing eccentric can slide well, and is adapted to the shape of the eccentric. On the other Side is the pressure plate typically flat or tapered, the surface may be smooth or, for example, corrugated.

It is clear that there must be a corresponding second clamping surface that can absorb the tensile forces acting on the thru-axle in the operating state, and thus exerts pressure forces on the second dropout. This second clamping surface is provided by an integrated into the thru axle. It is therefore part of a lockable axis against the axial movement lockable locking area. This region is preferably designed as an annular groove, which is particularly preferably circumferential. However, a construction with an interrupted groove is also conceivable. Further, instead of a groove, a circumferential or interrupted elevation is conceivable, which also has said second clamping surface in the axial direction.

By actuating the device for applying axial compressive forces of the distance between the two opposing clamping surfaces is reduced. Between the clamping surfaces, the dropouts (or support surfaces of the same) are arranged. Thus, clamping forces can be exerted on the dropouts and the hollow axle between them to fix the latter.

The quick-release system further comprises a movable closure mechanism, which is arranged in the region of the intended for receiving the second end dropout. This has an opening which can be plugged onto or into the locking region, so that the plug-in axis can be secured in the axial direction by means of positive cooperation between its second clamping surface and the locking mechanism.

In other words, the closure mechanism has an opening which typically (i.e., optionally) has a first (wider) area through which the second end of the thru-axle is partially passable so that the locking portion thereof can be positioned beyond the opening. In any case, the opening is also shaped and dimensioned to have a second (narrower) area through which said second end is not pluggable. However, this area is shaped and dimensioned so that it can at least partially accommodate the (also narrower) locking area by radially moving the component carrying it (namely the locking mechanism) in the direction of the plug axis. In this way, a lock is formed, which ensures that the thru axle can not be retracted in the axial direction. Accordingly, an actuation of the clamping lever does not lead to a (marked) retraction of the plug-in axle, but to an increase in the tensile forces acting on the plug-in axle, or to an increase in the pressure forces acting on the first and second clamping surfaces.

In the event that the opening has only the second, narrower area, the locking mechanism must be so far radially removable from the plug-in axis that it completely leaves the area in front of the hole of the dropout; even then the thru-axle is easily inserted into the dropout or pulled out of this.

According to the invention, the closure mechanism can be plugged from the radial direction onto the locking region and arranged in a housing in which it can be guided between a blocking position and a release position. In the locked position, the plug-in axle is locked as described above, in the release position, it can be pulled out of the second dropout unhindered. It is clear that the closure mechanism must be manually operable from the outside, which is achieved in that it protrudes at least in one direction out of the housing, to such an extent that it can be brought into the release position when actuated.

The shutter mechanism is therefore largely protected from external influences, so that malfunction or stiffness due to contamination are significantly reduced. Due to the guide in the housing, the operation is safe and easy, incorrect operation is avoided. In addition, the structure is very simple and inexpensive to implement.

Hereinafter, preferred embodiments of the invention are explained in detail.

According to one embodiment, the closure mechanism can be guided linearly in the housing. This means that the locking mechanism moves on a straight path which is perpendicular to the longitudinal axis of the plug-in axis, and whose direction and orientation is predetermined by the housing. Preferably, the beginning and / or the end of the web is predetermined by the housing, so that the shutter mechanism can not accidentally fall out of the housing. This can be achieved in a simple manner in that the housing has a taper through which a likewise tapered end piece of the locking mechanism protrudes. If the non-tapered middle part of the locking mechanism abuts the housing taper from the inside, this acts as a mechanical stop.

According to another embodiment, the locking mechanism is rotatable in the housing feasible. This means that the shutter mechanism has a pivot around which it can rotate. The pivot point is located outside the region of the opening.

In the locked position, the (always present according to the invention) narrower region of the opening is aligned with the longitudinal axis of the plug-in axis. In the release position there, if available, the wider area, or the shutter mechanism can rotate (with open-sided opening) so far out of the locked position that he is no longer in front of the thru axle.

According to a preferred embodiment, however, the opening is circumferentially closed. Thus, it typically has a first (wider) area through which the second end of the plug-in axis can be plugged, and a second (narrower) area, which can only be plugged onto the locking area. This embodiment can be combined with both the linear and the rotationally movable embodiment.

As already described above, in the case of a circumferentially closed opening, it is preferred that the opening has a wider area through which the second end of the plug-in axis is feasible, and a narrower area through which the locking area of the second end is axially restrained. having. To avoid repetition, reference is made to the above statements.

According to a further embodiment, the housing is provided as a separate component, which is arranged beyond the dropout provided for receiving the second end and connectable to this. The advantage of this embodiment lies in the substantial independence of the construction of the dropout. Only a fixing hole for securing against falling out and twisting of the housing is preferably provided.

According to another embodiment, the housing is integrated in the dropout, which is provided for receiving the second end. In other words, the second dropout provides the guide according to the invention by providing corresponding inner contours. The advantage of this construction is the reduction of the required parts, the even better protection against contamination, and the lower weight of the quick-release system.

In another embodiment, the quick release system includes two or more closure mechanisms. By skillfully arranging the closure mechanisms, the overlap with the second clamping surface can be maximized and / or security against failure increased.

According to one embodiment, the closure mechanisms are arranged at different angles around the piercing axis, more precisely around the bore of the dropout provided for receiving the second end. This means that a plurality of closure mechanisms is present, and that they are arranged distributed in preferably regular arrangement around the bore of the dropout. In this way, the surface which interacts with the second clamping surface of the thru-axle can be increased. The openings of the individual closure mechanisms are then typically designed to be open.

For example, two closure mechanisms with laterally open openings may be positioned diametrically opposite the dropout, with each opening preferably terminating in a semicircle. If both locking mechanisms are in the respective locking position, they form a cylindrical bore consisting of two halves, the diameter of which particularly preferably corresponds exactly to the diameter of the locking region. Thus, virtually the entire surface of the second clamping surface can be used. In an analogous manner, e.g. Also, three or more shutter mechanisms usable.

According to another embodiment, the closure mechanisms are arranged in superimposed planes at least partially overlapping each other. The advantage of this embodiment is to increase the security against mechanical failure, since the individual closure mechanisms support each other and at least one other is available in case of failure of a closure mechanism.

The two last-mentioned embodiments can also be combined with one another. A particularly stable embodiment results in a designed as an iris diaphragm construction. Here several segments (lamellae) are provided which partially overlap, and which in combination allow a variable diameter opening. Due to the overlap, the individual slats can be made relatively thin.

According to a further embodiment, the at least one locking mechanism is automatically in the blocking position, for example by means of a spring. Thus, while the movement of the shutter mechanism to the release position is accomplished by manual operation (eg, pushing with a finger), the shutter mechanism automatically seeks to return to the locked position upon release. In this way, the security against erroneously incomplete movement of the shutter mechanism is reduced to the locked position.

In addition, this embodiment has the advantage that it - by attaching a corresponding chamfer at the tip of the second end of the plug-in axis and / or that side of the opening of the shutter mechanism, which faces this end - is possible by merely inserting the plug-in axis, the shutter mechanism to move from the lock to the release position. When the thru-axle reaches its axial end position, the locking mechanism automatically springs into the locked position. Typically, a clearly audible click also occurs. A manual operation is then necessary only for removing the thru axle. This simplifies operation and saves time when installing the impeller.

According to another embodiment, the at least one locking mechanism has locking points for locating the locking and / or locking position. These may e.g. be provided by recesses in the surface of the shutter mechanism, or by notches on at least one of its outer sides. A spring-loaded ball then serves as a latching body. With such a construction, the user can easily obtain a haptic feedback that allows him to feel the correct positions of the shutter mechanism even without good visibility, for example due to contamination of the hub and the dropout. Also an auditory feedback by clicking is achievable in this way.

According to a further embodiment, the housing is closed in the axial direction beyond the area provided for receiving the second end of the thru-axle. The housing thus provides an interior, which is open only in the direction of the plug-in axis and thus to the bore of the dropout substantially. In this interior, the second end of the thru-axle is inserted and locked. Thus, the risk of pollution can be further reduced. However, it is clear that the locking mechanism must continue to be accessible from outside at least on one side. However, it is easily possible to keep the resulting column very small, so that dirt is essentially retained; if necessary, appropriate seals or hydrophobic coatings can be used.

According to another embodiment, the plug-in axis and / or the locking mechanism are lockable. This means that it is ensured by a mechanical aid, that the locking mechanism can not move without a corresponding key in the release position, and / or that the through axle - despite in befindlichem in the release position locking mechanism - can not be pulled out of the corresponding dropout.

In the first case, a simple curtain or plug lock, which is suspended or plugged into a securing bore of the locking mechanism, can be used to block its mobility.

In the second case, a plug-in lock or the like may be inserted in the second end of the plug-in axis, which increases the diameter of said end so far that the plug-in axis no longer fits through the opening of the closure mechanism and / or the hole of the dropout.

list of figures

• 1 eine perspektivische Ansicht einer ersten Ausführungsform des erfindungsgemäßen Schnellspannsystems in einem geöffneten Zustand;
• 2 das Schnellspannsystem aus 1 in einem geschlossenen Zustand;
• 3 zeigt eine perspektivische Ansicht einer zweiten Ausführungsform des erfindungsgemäßen Schnellspannsystems in einem geschlossenen Zustand;
• 4 die Ansicht aus 4 mit beabstandeter Abdeckung;
• 5 die Ansicht aus 5 in geöffnetem Zustand;
• 6 eine Ausführungsform mit integriertem Verschlusselement;
• 7 den Verschlussdeckel zu dieser Ausführungsform;
• 8 exemplarisch eine Vorrichtung zum Aufbringen von axialen Druckkräften;
• 9 schematisch eine Ausführungsform mit drei Verschlussmechanismen in Sperrposition;
• 10 schematisch die Ausführungsform mit drei Verschlussmechanismen in Freigabeposition.

The invention will be described by way of example with reference to figures. It shows

• 1 a perspective view of a first embodiment of the quick-release system according to the invention in an open state;
• 2 the quick release system 1 in a closed state;
• 3 shows a perspective view of a second embodiment of the quick-release system according to the invention in a closed state;
• 4 the view 4 with spaced cover;
• 5 the view 5 in open condition;
• 6 an embodiment with integrated closure element;
• 7 the closure lid to this embodiment;
• 8th an example of a device for applying axial compressive forces;
• 9 schematically an embodiment with three locking mechanisms in the locked position;
• 10 schematically the embodiment with three locking mechanisms in the release position.

In the 1 is a perspective view of a first embodiment of the quick-release system according to the invention in the open state shown.

The thru axle 1 from which only the second end 5 is shown has a locking area 6 on, which in the present case is designed as a circumferential annular groove. At its top is the thru axle 1 for better insertion into the dropout (not shown) strongly chamfered.

Distanced from the tip of the thru axle 1 is the case 9 arranged. This includes in the present case a cylindrical plug insert 10 which is intended for insertion into the bore of a dropout (not shown). As anti-rotation, this has a lateral flattening. With the housing 9 around a pivot 11 rotatably connected is the locking mechanism 8th , The housing 9 further includes an interior in which the shutter mechanism 8th is partially receivable.

The locking mechanism 8th has an opening 12 on. This is presently open at the side. Together with the locking mechanism 8th is the opening 12 in the way of rotation from the radial direction to the locking area 6 the plug-in axis pluggable. This is the diameter of the opening 12 slightly larger than the diameter at the bottom of the locking area 6 , It is clear that also the thickness of the shutter mechanism 8th in the area of the opening 12 at least slightly smaller than the width of the locking area 6 is. Thus, the thru axle 1 by means of positive cooperation between its second clamping surface 7 and the locking mechanism 8th securable in the axial direction.

The housing 9 serves to make the locking mechanism 8th rotatable between a blocking position and a release position ( 1 ) is feasible.

The situation near the blocking position is in the 2 shown. In this situation is the second end 5 the thru axle 1 in or through the housing 9 plugged. The locking mechanism 8th is already largely closed. When the shutter mechanism 8th completely into the interior of the case 9 is rotated, this leads to a positive interaction of the opening 12 and locking area 6 (not visible), so the thru axle 1 axially fixed or (at play between locking mechanism 8th and locking area 6 ) is provided in any case with an axially acting mechanical stop. As can be seen, it is necessary the locking mechanism 8th manually to the locked position.

By providing a spring or similar component (not shown), which (s) the locking mechanism 8th in the interior of the case 9 seeks to pull, can the shutter mechanism 8th automatically go into the locked position. Also, by suitable positioning of the housing 9 the shear force used to make the shutter mechanism 8th seeks to get into the locked position.

Preferably, a detent (not visible) is present, which allows it only with increased effort, the locking mechanism 8th to rotate out of the locked position.

In 3 and 4 is a perspective view of a second embodiment of the quick-release system according to the invention in a closed state. In 4 is for better illustration the cover of the housing 9 shown spaced from the body.

The thru axle 1 is designed as in the example described above.

Also according to this embodiment, the shutter mechanism 8th in an external housing 9 housed and stored linearly displaceable. The leadership is good in 4 recognizable. The operation is again from the outside; this shows the case 9 on its outside two corresponding entrances (in the picture above and below) on.

The opening 12 the locking mechanism 8th is closed all around. It has a wider area (overhead) and a narrower area (lower). The wider area is sized to the second end 5 the thru axle 1 completely fits through it. The narrower area, on the other hand, is dimensioned so that it is only slightly larger than the locking area 6 the thru axle 1 is (more precisely: that its opening profile only slightly larger than the cross-sectional profile of the thru axle 1 in the area of the locking area 6 , and at the same time smaller than the envelope of the thru axle 1 in this area). Thus, the shutter mechanism 8th in the closed state (locking mechanism 8th in locked position, 4 ) an axial lock for the thru axle 1 represents.

Will he, as in 5 shown, brought into the release position, the lock is released. Through the housing 9 becomes the shutter mechanism 8th safely guided and at the same time protected from dirt or damage.

Is caused by the shown locking hole 14 a lock or the like pushed and locked, this blocks the movement to the release position, thus securing the quick-release system against unauthorized operation or theft.

6 shows an example of an embodiment, which is a shutter mechanism 8th similar to the embodiment of the 3 to 5 having. His case 9 However, it is integrated in the dropout, which has a matching recess for this purpose.

A feather 15 is intended to prevent accidental release of the locking mechanism 8th to prevent. The feather 15 is arranged such that the shutter mechanism 8th is moved to the locked position. For this pushes the spring 15 the locking mechanism 8th in the direction of his in the 6 shown closure position. To unlock the locking mechanism 8th at his pen 15 opposite end (right in the picture) is manually loaded against the spring force and thus brought into its unlocked position, in which the second end 5 the thru axle 1 in the area of the opening 12 lies.

The 7 shows an example of a lid 16 which is the closure of the housing 9 serves. At the position of the thru axle 1 a recess is provided. Alternatively, the housing 9 be formed at this position so that it absorbs the thru axle, without being there accessible from the outside.

In 8th is an example of a device for applying axial compressive forces 3 shown. A lever with eccentric (without reference numeral) is about a pull rod with the thru axle 1 connectable. A pressure washer 13 represents the first clamping surface (not shown) in the direction of a first dropout 4 ready. By moving the lever, the pressure disc is moved to the left in the image. Is the first clamping surface 4 on the outside of the dropout, traction forces are on the thru axle 1 exercised. These will be when the second end 5 is axially blocked by means of the locking mechanism (not shown), via the second clamping surface there 7 transferred to the second dropout.

It is clear that for convenient release of the locking mechanism 8th (ie for moving it to the release position) the device for applying axial compressive forces 3 should be relaxed.

In 9 schematically are parts of an embodiment with three locking mechanisms 8th (or alternatively formulated with a three-piece locking mechanism 8th ) in locked position. The view takes place axially in the direction of the second end of the plug-in axis (cut and hatched drawn). The three locking mechanisms 8th are regularly around the locking area 6 arranged around so as to form a three-segment ring. In the blocking position, they can use the second clamping surface 7 cover almost completely and also symmetrically, so that a particularly good power transmission is ensured.

Drive, as in 10 shown radially outward, leaving the envelope of the thru-axle 1 is released, the thru axle can be 1 move in the axial direction (out of the sheet). For clarity, other components such as in particular the housing and the guide are omitted.

LIST OF REFERENCE NUMBERS

1

floating axle

2

first end

3

Device for applying axial compressive forces

4

first clamping surface

5

second end

6

locking area

7

second clamping surface

8th

locking mechanism

9

casing

10

plug insert

11

pivot point

12

opening

13

thrust washer

14

lock hole

15

feather

16

cover

Claims (13)

A quick release system for securing the hub of an impeller between the openings in the form of drilled dropouts of the fork or the rear end of a bicycle, comprising a thru axle (1) for passage through the openings, - having a first end (2) to which a device for Application of axial compressive forces (3) with a first clamping surface (4) is arranged or can be arranged, - and with a second end (5) having a lockable against axial movement locking portion (6) with a second clamping surface (7), the quick clamping system further comprising a movable closure mechanism (8) which is arranged in the region of the dropout provided for receiving the second end (5) and has an opening (12) which can be plugged onto the locking region (6) so that the thru-axle (1) by means of positive cooperation between its second clamping surface (7) and the closure mechanism (8) in the axial direction is sichericher, characterized in that the second clamping surface (7) in the plug-in axis (1) is integrated, and that the closure mechanism (8) from the radial direction to the locking area (6) is pluggable, and that the shutter mechanism (8) in a housing (9) is arranged, in which it can be guided between a locking position and a release position. Quick clamping system after Claim 1 wherein the shutter mechanism (8) is linearly guided in the housing (9). Quick clamping system after Claim 1 , wherein the closure mechanism (8) rotatable in the housing (9) can be guided. Quick-clamping system according to one of the preceding claims, wherein the opening (12) is circumferentially closed. Quick clamping system after Claim 4 wherein the opening (12) has a wider area through which the second end (5) of the plug-in axis (1) is feasible and a narrower area through which the locking area (6) of the second end (5) is axially restrained. Quick release system according to one of the Claims 1 to 5 wherein the housing (9) is provided as a separate component, which is arranged beyond the dropout provided for receiving the second end (2) and connectable to this. Quick release system according to one of the Claims 1 to 5 wherein the housing (9) is integrated into the dropout provided for receiving the second end (2). A quick release system according to any one of the preceding claims, wherein it comprises two or more closure mechanisms (8). Quick clamping system after Claim 8 wherein the closure mechanisms (8) (i) are disposed adjacent to each other in the same plane at different angles about the bore of the dropout provided for receiving the second end (5), and / or (ii) are overlapped at least partially in superimposed planes , Quick-clamping system according to one of the preceding claims, wherein the at least one locking mechanism (8) automatically goes into the blocking position. Quick clamping system according to one of the preceding claims, wherein the at least one locking mechanism (8) has locking points for locating the locking and / or release position. Quick-clamping system according to one of the preceding claims, wherein the housing (9) is closed in the axial direction beyond the area provided for receiving the second end (5) of the plug-in axis (1). Quick-clamping system according to one of the preceding claims, wherein the plug-in axis (1) or the locking mechanism (8) are lockable.

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