DE10258454B4 - clamp - Google Patents

Abstract

Clamp with a tension band (13) for enclosing a bicycle frame portion, and with a fixing unit (11) for fixing the closed tension band (13) to the bicycle frame portion, wherein the fixing unit (11) has a fixing device (15) due to a first fastening operation on engages the closed tension band (13) along a fixing direction (53) and thereby defines the circumference of the closed tension band (13), wherein the fastening unit (11) has a Aufliegesteg (39) on which the clamping band (13) during the loading by the Fixing device (15) rests, wherein the fastening unit (11) has a clamping device (25) which acts on the clamping band (13) against the fixing direction (53) due to a further fastening operation of the fixing device (15) and thereby the closed and fixed strap ( 13) clamped to the bicycle frame section, wherein the clamping device (25) has a bracket (25) at least a first engaging portion (35) and a second engaging portion (35), and wherein the fixing unit (11) further comprises a bracket receptacle (19) for receiving the bracket (25), characterized in that the bracket receptacle (19) on its underside four Has latching arms (21), wherein in a preassembled state of the clamp, the bracket receptacle (19) on the Aufliegesteg (39) rests and the latching arms (21) engage behind the Aufliegesteg (39) on its underside, and wherein the resilience of the latching arms (21) dimensioned to allow release from the bed (39).

Description

The invention relates to a clamp with a clamping band for enclosing a bicycle frame section, and with a fastening unit for fixing the closed clamping strap to the bicycle frame section, wherein the fastening unit has a fixing device which engages due to a first fastening operation on the closed strap along a fixing direction and thereby the circumference determines the closed clamping strap, wherein the fastening unit has a Aufliegesteg on which the clamping band rests during the loading by the fixing device, wherein the fastening unit has a clamping device which engages due to a further fastening operation of the fixing device on the clamping band against the fixing direction and thereby the closed and fixed clamping band clamped to the bicycle frame section, wherein the clamping device is a bracket with at least a first attack section and a second Angriffsa section and wherein the fastening unit further comprises a bracket receptacle for receiving the bracket. Such a clamp is used to attach an accessory, such as a lock or lock holder, to a bicycle frame.

Clamps are known in which the final fastening of the tension band to the bicycle frame portion is accomplished by reducing the circumference of the tension band. In the simplest case, such clamps are designed as cable ties. Clamps are also known in which the fastening unit pulls the closed strap away from the bicycle frame section with the circumference unchanged, to cause the tension strap to become distorted.

However, the known clamps are often difficult and time consuming to use and can not guarantee the desired mounting stability in all applications. However, the ease of use is very important, since the clamps are to be fastened in a short time and since they are typically supplied together with a bicycle accessories and are therefore often mounted by the user and not by a specialist.

The GB 834 091 A shows a clamp according to the preamble of claim 1.

From the DE 11 08 019 A and the CH 648 097 A5 Clamps are known which have a fastening unit with a fixing device and a clamping device.

It is an object of the invention to provide a clamp that ensures a reliable fit to the bicycle frame with ease of use and quick installation.

This object is achieved by a clamp with the features of claim 1.

The fastening unit thus has a fixing device and a clamping device. These are mechanically coupled to one another in such a way that, with a continuous fastening operation, the fixing device first moves in the fixing direction and subsequently the tensioning device is moved counter to the fixing direction.

The first movement of the fixing device ensures an increasing frictional force or even a gradual deformation of the clamping band. As soon as the fixing device rests against the tightening strap or as soon as a certain contact pressure is achieved, the tightening device is moved in the opposite direction, so that now the tightening strap is clamped to the bicycle frame section. In this case, the fixing device can continue to exert a contact force on the clamping band, so that the friction or fixing force caused thereby always remains greater than the clamping force exerted by the clamping device and the clamping band thus maintains the extent of its circumference during bracing.

An advantage of this clamp is therefore that due to a single continuous attachment operation, such as a screw, both a fixing of the clamping band and a subsequent tightening of the clamping band is accomplished. In other words, a two-step fastening operation is made possible by a single fastening operation. This facilitates handling and allows a particularly quick installation.

Of particular advantage in this case is that the fixing device and the clamping device move in opposite directions, namely in the fixing direction or against this fixing direction. As a result, a particularly efficient clamping of the clamping band is achieved. After fixing the tension band, only a slight additional fastening operation for bracing the tension band is required. This also contributes to an easy handling of the clamp, since thus the fixation device is actuated only by a small amount, for example, has to be screwed.

Another advantage of the clamp is that due to the opposite Movement direction of fixing and clamping device can attack the clamping device at several sections of the clamping band. As a result, it is possible to achieve a multiplication of the bracing effect, so that not only an advantageous slight fastening operation is required, but also very high bracing forces can be achieved. The so clamped clamp thus has a large mounting stability.

According to a preferred embodiment, the fixing device engages the clamping band such that a first end and a second end of the closed clamping band are deformed or pressed together to form a frictional connection or a form-locking connection. As a result, the previously set circumference of the tension band is set particularly reliable, and it is ensured that in the subsequent tightening by means of the tensioning device, the tension band ends do not slip undesirably with respect to the previously determined position.

Furthermore, it is preferred if the fixing device has a threaded pin, which is screwed in the direction of the clamping band due to the fastening operation. Such a screwing not only causes a particularly good metering of the applied fixing and clamping force. But it is also of particular advantage that the screwing movement of the threaded pin acts on the strap in the manner of crimping, so that a particularly reliable setting of the circumference of the closed clamping band is achieved.

Preferably, the mechanical coupling between the fixing device and the clamping device for transmitting the further fastening operation by means of a rotatably and axially movably mounted coupling nut. In this the said grub screw is screwed. As soon as the grub screw rests on the clamping band and exerts a certain pressing force on it, it is blocked against further axial movement in the fixing direction, so that in a further screw actuation of the threaded pin, the coupling nut moves axially against the fixing direction. By the clamping device rests against the coupling nut and is also mounted axially movable, the axial movement of the coupling nut can be easily transferred to the clamping device.

With regard to the clamping device, it is preferred if this acts on at least two sections of the clamping band, which are arranged diametrically opposite with respect to the fixing device. In other words, the clamping device engages on the clamping band with respect to the direction of extension of the closed clamping band on both sides of the fixing device. As a result - compared to a simple tightening of the clamping band at a single point - a multiplication of the clamping effect achieved.

The clamping device has a bracket, which is in accordance with a preferred embodiment in cross-section U-shaped. As a result, a first and a second engaging portion on the two sides of the fixing device can be realized in a structurally particularly simple manner.

Furthermore, it is preferred if all elements of the fastening unit, which are involved in the construction of the force path for the clamping of the clamping band, are made of metal. As a result, the stability required for achieving high bracing forces is ensured. This relates in particular to the fixing device, the clamping device and a possible coupling device, in particular the said coupling nut.

Further embodiments are mentioned in the subclaims.

• 1 eine Perspektivansicht einer vormontierten Schelle,
• 2a, 2b und 2c eine Querschnittsansicht entlang der in 2b gezeigten Ebene IIa - IIa, eine Querschnittsansicht entlang der in 2a gezeigten Ebene IIb - IIb beziehungsweise eine Draufsicht der Schelle gemäß 1,
• 3a bis 8b Einzelteile der Schelle gemäß 1, und zwar
• 3a und 3b eine Seitenansicht beziehungsweise Vorderansicht eines U-Bügels,
• 4a und 4b eine Seitenansicht beziehungsweise Vorderansicht eines Gewindestifts,
• 5a und 5b eine Seitenansicht beziehungsweise Vorderansicht einer Kopplungsmutter,
• 6a und 6b eine Seitenansicht beziehungsweise Vorderansicht einer Bügelaufnahme,
• 7a und 7b eine Seitenansicht beziehungsweise Vorderansicht eines vorgeformten Spannbands, und
• 8a und 8b eine Seitenansicht beziehungsweise Vorderansicht eines Gehäuses.

The invention will now be described by way of example with reference to the drawings; in these show:

• 1 a perspective view of a pre-assembled clamp,
• 2a . 2 B and 2c a cross-sectional view along in 2 B Plane IIa - IIa, a cross-sectional view along the in 2a shown level IIb - IIb and a plan view of the clamp according to 1 .
• 3a to 8b Parts of the clamp according to 1 , in fact
• 3a and 3b a side view or front view of a U-bracket,
• 4a and 4b a side view or front view of a threaded pin,
• 5a and 5b a side view or front view of a coupling nut,
• 6a and 6b a side view or front view of a bow receiver,
• 7a and 7b a side view and front view of a preformed tension band, and
• 8a and 8b a side view or front view of a housing.

The clamp shown consists of a fixing unit 11 and a pre-assembled strap 13 , The fastening unit 11 has a central threaded pin 15 with a hexagon socket at the top ( 1 and 2c) ,

The grub screw 15 is in a coupling nut 17 screwed ( 2a and 2 B) , This is inside a temple pickup 19 housed rotatably. The coupling nut 17 can in the bow holder 19 be loosely inserted, or it is in the bow holder 19 attached, for example, locked, jammed or glued. The temple mount 19 has four locking arms on its underside 21 and at its top a longitudinal recess 23 ( 6b) ,

The fastening unit 11 also has a U-bracket 25 , This has a flat base section 27 with a central passage opening 29 for receiving the grub screw 15 , At right angles to the base section 27 two flat leg sections extend 31 each with a passage slot 33 in symmetrical arrangement ( 3a and 3b) , The bottom boundary of each passage slot 33 serves as an attack section 35 , as will be explained below. In the preassembled state of the fastening unit 11 according to 1 . 2a . 2 B and 2c is the U-bracket 25 with its base section 27 inside the longitudinal recess 23 the temple reception 19 , and the leg sections 31 surround the stirrup holder 19 laterally.

Furthermore, the fastening unit has 11 a substantially cubic housing 37 , At the bottom has the housing 37 a Aufliegesteg 39 , the two side walls of the housing 37 connects with each other ( 2 B) , Perpendicular to the extension direction of the Aufliegestegs 39 are the side walls of the housing 37 shortened at the bottom, so that on two opposite sides of the housing 37 one passage opening each 41 is formed ( 2a) , The bottom of the case 37 is along the extension direction of the Aufliegestegs 39 concave.

In the preassembled state of the clamp according to 1 . 2a . 2 B and 2c is the bow holder 19 at the Aufliegesteg 39 on, and the latch arms 21 reach behind the landing stage 39 at the bottom ( 2 B) , Between the bow retainer 19 , the coupling nut held in it 17 and the threaded pin screwed into it 15 on the one hand and the Aufliegesteg 39 on the other hand is thus a recording room 43 educated. The passage recesses 41 of the housing 37 , the transmission slots 33 of the U-bracket 25 and said recording room 43 are thus arranged in alignment with each other.

In this preassembled state of the clamp is the strap 13 with one end 45 at the attachment unit 11 attached. This is the end in question 45 of the tension band 13 U-shaped bent and embraces a leg section 31 of the U-bracket 25 , On this basis, the tension band extends 13 along the reception room 43 , a passage slot 33 and a passage recess 41 and it leaves the attachment unit 11 on an exit side 47 ( 2a) , The opposite side of the attachment unit 11 is in the figures as entrance side 49 designated.

The clamp shown serves for simple, stable and reliable attachment of an accessory, such as a lock or a lock bracket, to a portion of a bicycle frame. As already explained, the show 1 . 2a . 2 B and 2c the clamp in a factory pre-assembled state. On this basis, the clamp is mounted on a bicycle frame section in the following manner:

First, the attachment unit 11 with the concave arched bottom of the case 37 attached to the usually convex curved two-wheel frame section. Then the free end 51 of the tension band 13 ( 1 ) around the bicycle frame section and at the entrance side 49 as long as in the mounting unit 11 introduced it to the exit side 47 again from the mounting unit 11 exit. The strap 13 is thus circumferentially closed around the bicycle frame section around. The free end 51 extends within the mounting unit 11 along the passage recesses 41 , the passage slots 33 and the recording room 43 , Inside the recording room 43 overlap the free end 51 and the fortified end 45 of the tension band 13 ,

Next, by means of a suitable tool, the grub screw 15 even deeper in the coupling nut 17 screwed so that it moves axially along a fixing direction 53 on the overlapping ends 45 . 51 of the tension band 13 too moved. With continuous screwing of the threaded pin 15 finally, grab this at the top of the free end 51 of the tension band 13 at. Because the strap 13 on the Aufliegesteg 39 of the housing 37 rests, causes the constant screwing of the threaded pin 15 Not only an increasing friction, but also a certain complementary deformation of the two ends 45 . 51 of the tension band 13 , The ends 45 . 51 are thus fixed together, and the extent of the circumference of the closed clamping band 13 is determined by this. The grub screw 15 thus serves as a fixing device.

If now the grub screw 15 still further screw-operated, it is against further axial movement along the fixing direction 53 through the Aufliegesteg 39 blocked. Another Screw actuation of the threaded pin 15 therefore, causes the inside of the bow holder 19 rotatably arranged coupling nut 17 axially against the fixing direction 53 emotional. This will also be on the top of the coupling nut 17 fitting U-bolts 25 against the fixing direction 53 emotional. The coupling nut 17 thus causes a mechanical coupling of the U-bracket 25 with the grub screw 15 with respect to an axial movement.

Together with the coupling nut 17 and the U-hanger 25 also moves the bow holder 19 axially against the fixing direction 53 , For this purpose, the resilience of the locking arms 21 dimensioned accordingly to a release of the Aufliegesteg 39 to allow, and the bow holder 19 is inside the case 37 mounted axially displaceable.

The illustrated movement of the U-bracket 25 against the fixing direction 53 causes a final distortion of the previously closed and fixed in terms of its circumference tension band 13 on the bicycle frame section. The attack sections 35 of the U-bracket 25 at the bottom of the passage slots 33 namely pull the strap 13 against the fixing direction 53 away from the bicycle frame portion while the overlapping ends 45 . 51 of the tension band 13 within the recording room 43 the fastening unit 11 stay fixed to each other and by means of the threaded pin 15 continue in fixing direction 53 be pressed. The U-hanger 25 thus serves as a clamping device.

An advantage of the illustrated embodiment is the particularly simple operation: after insertion of the free end 51 of the tension band 13 in the entrance side 49 the fastening unit 11 is in fact only a single continuous screw actuation of the grub screw 15 required to both set the scope of the tension band 13 as well as a subsequent final tightening on the bicycle frame section. Due to the coupling of the U-bracket 25 with the grub screw 15 over the coupling nut 17 becomes a two-stage opposite fastening movement of the fastening unit 11 for fixing and clamping the clamping band 13 achieved without the user having to take further measures beyond a continuous screw operation.

A particular advantage of the clamp shown is the fact that the distortion of the clamping band 13 by means of the U-bracket 25 happens in a very effective way. This is due to the fact that the attack sections 35 of the U-bracket 25 at both ends 45 . 51 of the tension band 13 attack, immediately adjacent to the grub screw 15 on two opposite sides of the grub screw 15 ( 2a) , This attacking the U-bracket 25 on the strap 13 both at a section in the area of the outlet side 47 as well as at a section in the area of the entrance side 49 the fastening unit 11 ultimately leads to a quadrupling of the Verspannungsweglänge, by the drive of the U-bracket 25 against the fixing direction 53 is caused. Because the two ends 45 . 51 of the tension band 13 within the recording room 43 by means of the threaded pin 15 Fixed to each other, namely causes the movement of each of the two attack sections 35 against the fixing direction 53 a tension of the tension band 13 in two places, on the left side as well as on the right side of the attacking section 35 ( 2a) ,

In practice, this means that after fixing the two ends 45 . 51 of the tension band 13 at the Aufliegesteg 39 only one more screw actuation of the threaded pin 15 about a quarter turn is required to the strap 13 with high tensioning force and thus with high stability of attachment to the bicycle frame section finally to brace.

Finally, it should be noted that the clamp is attached to the clamp shown 13 preferably made of a deformable metal, as a certain deformability explained the permanent fixing of the two ends 45 . 51 supported each other. The strap 13 can also be made of spring steel. Furthermore, it is possible that the strap 13 is plastic coated or at least provided on the underside with an example adhered protective layer to avoid unwanted damage to the bicycle frame section.

LIST OF REFERENCE NUMBERS

11

fixing unit

13

strap

15

Fixing device, grub screw

17

coupling nut

19

receiving bracket

21

detent arm

23

longitudinal recess

25

Clamping device, U-bracket

27

base section

29

Port

31

leg portion

33

Through slot

35

engaging portion

37

casing

39

Aufliegesteg

41

Passage recess

43

accommodation space

45

first end, fastened end of the tension band

47

exit side

49

entry page

51

second end, free end of the tension band

53

fixing direction

Claims (14)

Clamp with a tension band (13) for enclosing a bicycle frame portion, and with a fixing unit (11) for fixing the closed tension band (13) to the bicycle frame portion, wherein the fixing unit (11) has a fixing device (15) due to a first fastening operation on engages the closed tension band (13) along a fixing direction (53) and thereby defines the circumference of the closed tension band (13), wherein the fastening unit (11) has a Aufliegesteg (39) on which the clamping band (13) during the loading by the Fixing device (15) rests, wherein the fastening unit (11) has a clamping device (25) which acts on the clamping band (13) against the fixing direction (53) due to a further fastening operation of the fixing device (15) and thereby the closed and fixed strap ( 13) braced on the bicycle frame section, wherein the clamping device (25) has a bracket (25) m it has at least a first engaging portion (35) and a second engaging portion (35), and wherein the fixing unit (11) further comprises a bracket receptacle (19) for receiving the bracket (25), characterized in that the bracket receptacle (19) at its Bottom four locking arms (21), wherein in a preassembled state of the clamp, the bracket receptacle (19) rests on the Aufliegesteg (39) and the latching arms (21) engage behind the Aufliegesteg (39) on its underside, and wherein the resilience of the latching arms ( 21) to permit release from the bed (39). Ring Claim 1 , characterized in that the fixing device (15) engages the clamping band (13) in such a way that a first end (45) and a second end (51) of the clamping band (13) can be deformed or pressed together to form a frictional connection or a form-locking connection. Clamp according to one of the preceding claims, characterized in that the fixing device (15) acts on the upper side of the tension band (13), and / or that the fixing device (15) acts on two overlapping ends (45, 51) of the tension band (13) , Clamp according to one of the preceding claims, characterized in that the fixing device (15) has a threaded pin (15), which can be screwed in the direction of the clamping band (13) due to the first fastening operation. Ring Claim 4 , characterized in that the fastening unit (11) has a rotatably arranged coupling nut (17), in which the threaded pin (15) in the fixing direction (53) can be screwed. Ring Claim 5 , characterized in that the coupling nut (17) for driving the tensioning device (25) during the further fastening operation axially against the fixing direction (53) is movable. Clamp according to one of the preceding claims, characterized in that the fastening unit (11) has a receiving space (43) for receiving a free end (51) of the clamping band (13) enclosing the bicycle frame section. Clamp according to one of the preceding claims, characterized in that one end (45) of the tension band (13) is fastened to the fastening unit (11), and in that another free end (51) of the tension band (13) fits into the fastening unit (11). 11) is insertable, that the fixed end (45) and the free end (51) of the clamping band (13) in the region of the fixing device (15) overlap. Clamp according to one of the preceding claims, characterized in that the tensioning device (25) acts on at least two sections of the tensioning band (13) which are opposite to the fixing device (15), and / or that the tensioning device (25) is attached to a first end (45). and engages a second end (51) of the tension band (13). Clamp according to one of the preceding claims, characterized in that the bracket (25) is U-shaped in cross-section, and / or in that the fixing device (15) is mechanically coupled to the bracket (25) in order to transmit the further fastening operation. Clamp according to one of the preceding claims, characterized in that the engaging portions (35) of the bracket (25) on two opposite sides of the fixing device (15) are arranged, and / or that the engaging portions (35) of the bracket (25) adjacent to the fixing device (15) are arranged. Clamp according to one of the preceding claims, characterized in that the fixing device (15) and the clamping device (25) are made of metal. Clamp according to one of the preceding claims, characterized in that the fastening unit (11) has a housing (37) for accommodating the fixing device (15) and the clamping device (25). Clamp according to one of the preceding claims, characterized in that the clamping band (13) consists of a deformable metal or spring steel, and / or that the clamping band (13) is plastic-coated and / or coated on the underside.

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