WO2008145496A2 - Wheel pin for cycles and motorcycles provided with torque-limiting coupling device - Google Patents

Wheel pin for cycles and motorcycles provided with torque-limiting coupling device Download PDF

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Publication number
WO2008145496A2
WO2008145496A2 PCT/EP2008/055660 EP2008055660W WO2008145496A2 WO 2008145496 A2 WO2008145496 A2 WO 2008145496A2 EP 2008055660 W EP2008055660 W EP 2008055660W WO 2008145496 A2 WO2008145496 A2 WO 2008145496A2
Authority
WO
WIPO (PCT)
Prior art keywords
coupling
pin
semi
spring
wheel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2008/055660
Other languages
French (fr)
Other versions
WO2008145496A3 (en
Inventor
Carlo Marzocchi
Umberto Orsini
Sandro Musiani
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marzocchi SpA
TM SRL
Original Assignee
Marzocchi SpA
Tenneco Marzocchi SRL
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marzocchi SpA, Tenneco Marzocchi SRL filed Critical Marzocchi SpA
Publication of WO2008145496A2 publication Critical patent/WO2008145496A2/en
Publication of WO2008145496A3 publication Critical patent/WO2008145496A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
    • F16D7/04—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type
    • F16D7/042—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement
    • F16D7/044—Slip couplings, e.g. slipping on overload, for absorbing shock of the ratchet type with at least one part moving axially between engagement and disengagement the axially moving part being coaxial with the rotation, e.g. a gear with face teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
    • B62K25/00—Axle suspensions
    • B62K25/02—Axle suspensions for mounting axles rigidly on cycle frame or fork, e.g. adjustably
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00—Automatic clutches
    • F16D43/02—Automatic clutches actuated entirely mechanically
    • F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
    • F16D43/202—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type
    • F16D43/2022—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with at least one part moving axially between engagement and disengagement
    • F16D43/2024—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure of the ratchet type with at least one part moving axially between engagement and disengagement the axially moving part being coaxial with the rotation, e.g. a gear with face teeth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDECARS, FORECARS, OR THE LIKE
    • B62K2206/00—Quick release mechanisms adapted for cycles

Definitions

  • Wheel pin for cycles and motorcycles provided with torque-limiting coupling device.
  • the present invention relates to a wheel pin for cycles or motorcycles or similar vehicles.
  • wheel pins of cycles, motorcycles or similar vehicles are inserted in suitable housings obtained in the two legs of the fork and inserted in the wheel hub.
  • pins are normally realised by means of a pin with threaded end, which is inserted in the housings of the legs of the fork and fitted in position, for example by means of a fixing nut tightened to the threaded end of the pin, or by tightening the pin in one of the two housings provided with thread.
  • the common use of light alloy has increased the need to comply with the value of the coupling torque.
  • the threading obtained on the pin and/or the housing of the leg of the fork which are typically made of light alloy, has a very low tolerance with respect to the coupling torque value: excessive coupling torque determines the breakage of the threading of the pin and/or housing, thus requiring the replacement of the damaged parts.
  • correct coupling was to be ensured by using a so- called "dynamometric key", that is to say a tool used to tighten the pin in the housing or the pin and the nut mutually, while maintaining a predefined maximum torque.
  • a first inconvenience is related to the fact that it is not possible or, better said, not advisable to tighten the pin in the housing without a dynamometric key, for example manually or with ordinary tools, in order to avoid the aforementioned problems, for the application of a coupling torque lower or higher than the project value.
  • a third inconvenience consists in the fact that dynamometric keys typically have very exact operation ranges, or fields, and therefore it is sometimes necessary to have two or more dynamometric keys, for example, to tighten the pins of two or more different bicycles or motorcycles in mounting position.
  • Another inconvenience is related to the fact that, when the user has to dismount the wheel, for example to repair a flat tyre, if he is not provided with a dynamometric key, for example because of distance from towns or mechanics workshops, the user must provide tightening, with the risk of applying an excessive or insufficient torque compared to the project value.
  • the purpose of the present invention is to find a simple inexpensive solution to the aforementioned purposes.
  • the present invention relates to a wheel pin for cycles or motorcycles or similar vehicles of the type designed to be inserted in housings obtained in the two legs of the fork and in the wheel hub, and tightened to one of the two housings and/or tightened to a fixing nut and in which the pin comprises a built-in torque-limiting coupling device.
  • the pin of the present invention integrates a device that limits the maximum coupling torque of the pin, in such a way that the pin cannot be tightened with a torque higher than the one preferred and/or predefined by the user.
  • the pin is provided with a torque- limiting coupling device that is actuated when the value exceeds a predefined coupling torque established by the device manufacturer.
  • the device is actuated to adjust the value of the maximum coupling torque, in order to make the application of the pin and/or the device mounted on the pin more flexible and suitable to different construction requirements.
  • the pin of the invention is able to overcome the inconveniences of the known art, since the dynamometric key is no longer necessary because of the torque-limiting coupling device provided in the pin. This avoids the cost to purchase one or more dynamometric keys, as well as errors in the application of the maximum torque, being each single pin provided with a device that limits the maximum torque to a predefined value equivalent to the one established by the project.
  • Another advantage is given by the fact that the pin can be removed and re- inserted also in emergency situations, when the user is not provided with a dynamometric key.
  • - fig. 1 is a section with an axial plane of the pin of the present invention
  • - fig. 2 is an exploded axonometric view of the pin of the present invention
  • - fig. 3 is an exploded axonometric view of the front-toothed coupling mounted onto the pin of the invention.
  • the pin (3) of the present invention is provided with a torque-limiting coupling device.
  • the pin (3) is provided with a tightening crank (1 ).
  • the tightening crank (1 ) can be replaced by a suitable section used to engage a tool, such as a hexagonal key, screwdriver or similar item.
  • the advantage of the crank (1 ) is that it provides for manually tightening the pin in position, without the need of additional tools for simple quick mounting.
  • the pin (3) is designed to be inserted in the hub (4) and in the housings (5) of the fork (6).
  • the pin (3) is at least partially hollow, in particular being provided with a cavity in the ending section opposite the threaded end (16) of the pin.
  • the cavity externally ends with an opening (2).
  • Figs. 2 and 3 illustrate the presence of a front toothed-coupling (G) composed of a first semi-coupling (7) and a second semi-coupling (8), a shaft (9), and a screw element (10).
  • crank (1 ) When actuated in the tightening direction, the crank (1 ) drives into rotation the pin (3) by means of the front toothed-coupling.
  • the first semi-coupling (7) is positioned on the bottom of the opening (2) inside the cavity of the pin (3) and the first-coupling (7) is coupled with the pin (3).
  • the second semi-coupling (8) is inserted and slides axially outside the shaft (9).
  • the shaft (9) has a basically cylindrical body associated with a mushroom- shaped enlarged head (9a) in opposite direction to the pin (3), that is to say on the crank-side.
  • the crank (1 ) is provided with an opening eye (12) and is free to rotate around the shaft (9) with circular section and cylindrical direction.
  • the shaft (9) is permanently fixed to the semi-coupling (7) by means of the screw element (10) that mutually engages the shaft (9) and the semi-coupling (7).
  • the second semi-coupling (8) is coupled with or part of a partially hexagonal sleeve (1 1 ) at the end that faces the opening (2).
  • the section is a hexagonal section in this case, any polygonal section can be used without leaving the precepts and scope of the present invention.
  • the hexagonal section and/or the sleeve (1 1 ) are inserted inside the eye (12) of the crank, which has a complementary engagement section, with hexagonal shape in this case.
  • the semi-coupling (7) and the semi-coupling (8) are held in mutual contact by means of a spring element, for example a precompressed spring (13) that pushes the semi-coupling (8) against the semi-coupling (7), thus engaging the teeth of the two semi-couplings.
  • a spring element for example a precompressed spring (13) that pushes the semi-coupling (8) against the semi-coupling (7), thus engaging the teeth of the two semi-couplings.
  • the semi-coupling (8) is rotated by rotating the crank (1 ), and following to the engagement of the front teeth, drives into rotation the semi-coupling (7), which moves the hollow pin (3) that is inserted in the housings (5) of the fork (6).
  • the resistance offered by the pin is transferred to the coupling (7), which is pushed against the semi-coupling (8) which, being free to slide inside the hollow pin (3), is maintained against the semi-coupling (7) by the only force of the spring (13).
  • the spring When the resistance offered by the pin and the semi-coupling (7) exceeds a predefined value, the spring is compressed and the engagement between the teeth of the semi-coupling (7) and the teeth of the semi-coupling (8) is lost. The loss of engagement between the teeth is delayed if the compression of the spring (13) is higher and therefore the calibration of the spring depends on the maximum coupling torque transmitted by the crank (1 ) to the pin (3).
  • the crank (1 ) When the force exerted by the spring (13) on the semi-coupling (8) is exceeded, the crank (1 ) no longer transmits force to the pin (3) and idles inside the opening (2) of the pin (3), in particular around the pin (9).
  • the teeth of the front toothed-coupling are generated by means of two concurrent surfaces that generate the tooth, with one surface inclined with respect to the longitudinal axis of the coupling and the other surface parallel to the said axis.
  • the coupling teeth are designed for mutual engagement with the inclined side during tightening and with the parallel, or straight side during loosening. This ensures that, when the maximum torque condition is reached during tightening, the axial movement of the semi-coupling (8) is favoured, i.e. the teeth slide mutually and the semi-coupling (8) is moved axially. During loosening, the teeth engage with the straight sides, that is to say parallel to the longitudinal axis of the coupling, thus allowing for loosening.
  • a compression adjustment means of the spring is provided, such as a compression pin transversal to the pin (3) actuating on the part of the spring (13) that faces the opening, the said compression pin actuating on the length of the spring, which is shortened or extended according to the maximum torque to be transmitted.
  • the length of the spring is changed by actuating on the shaft (9), for instance through the movement or rotation of the shaft (9), which is provided with a crown or section of circular crown that actuates on the part of the spring (13) that faces the opening, thus varying the spring length and pre-compression charge, and consequently the maximum torque to be transmitted.
  • the present invention also relates to a cycle or motorcycle or cycle or mountain bikes or similar vehicles characterised in that it comprises a pin according to the present invention.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Axle Suspensions And Sidecars For Cycles (AREA)

Abstract

The present invention relates to a wheel pin for cycles and motorcycles of the type designed to be inserted in the housings (5) of the fork (6) inside the hub (4) and tightened to one of the housings, which is provided with a torque- limiting coupling device.

Description

Description
Wheel pin for cycles and motorcycles provided with torque-limiting coupling device.
The present invention relates to a wheel pin for cycles or motorcycles or similar vehicles.
When mounted, wheel pins of cycles, motorcycles or similar vehicles are inserted in suitable housings obtained in the two legs of the fork and inserted in the wheel hub.
According to the known art, pins are normally realised by means of a pin with threaded end, which is inserted in the housings of the legs of the fork and fitted in position, for example by means of a fixing nut tightened to the threaded end of the pin, or by tightening the pin in one of the two housings provided with thread.
The tightening of the pin on the nut and/or housing must comply with the project value and is of crucial importance.
In fact, excessive torque risks forcing the legs of the stems against the wheel hub, thus braking the rotation of the hub and causing great damages and possible dangers for the user.
On the other hand, an insufficient torque may determine the undesired loosening of the pin from the housing or of the nut from the pin, with severe consequences.
Moreover, the common use of light alloy has increased the need to comply with the value of the coupling torque. In fact, the threading obtained on the pin and/or the housing of the leg of the fork, which are typically made of light alloy, has a very low tolerance with respect to the coupling torque value: excessive coupling torque determines the breakage of the threading of the pin and/or housing, thus requiring the replacement of the damaged parts. According to the known art, correct coupling was to be ensured by using a so- called "dynamometric key", that is to say a tool used to tighten the pin in the housing or the pin and the nut mutually, while maintaining a predefined maximum torque.
A first inconvenience is related to the fact that it is not possible or, better said, not advisable to tighten the pin in the housing without a dynamometric key, for example manually or with ordinary tools, in order to avoid the aforementioned problems, for the application of a coupling torque lower or higher than the project value.
Another inconvenience consists in the fact that dynamometric keys are quite expensive.
A third inconvenience consists in the fact that dynamometric keys typically have very exact operation ranges, or fields, and therefore it is sometimes necessary to have two or more dynamometric keys, for example, to tighten the pins of two or more different bicycles or motorcycles in mounting position.
This problem is especially felt by professionals of the industry, for example mechanics, tyre repairers, etc., who must have a complete series of dynamometric keys in order to meet the different requirements of different vehicles.
Another inconvenience is related to the fact that, when the user has to dismount the wheel, for example to repair a flat tyre, if he is not provided with a dynamometric key, for example because of distance from towns or mechanics workshops, the user must provide tightening, with the risk of applying an excessive or insufficient torque compared to the project value.
The purpose of the present invention is to find a simple inexpensive solution to the aforementioned purposes.
The present invention relates to a wheel pin for cycles or motorcycles or similar vehicles of the type designed to be inserted in housings obtained in the two legs of the fork and in the wheel hub, and tightened to one of the two housings and/or tightened to a fixing nut and in which the pin comprises a built-in torque-limiting coupling device.
The pin of the present invention integrates a device that limits the maximum coupling torque of the pin, in such a way that the pin cannot be tightened with a torque higher than the one preferred and/or predefined by the user.
According to an executive embodiment, the pin is provided with a torque- limiting coupling device that is actuated when the value exceeds a predefined coupling torque established by the device manufacturer.
According to an advantageous executive embodiment, the device is actuated to adjust the value of the maximum coupling torque, in order to make the application of the pin and/or the device mounted on the pin more flexible and suitable to different construction requirements.
The pin of the invention is able to overcome the inconveniences of the known art, since the dynamometric key is no longer necessary because of the torque-limiting coupling device provided in the pin. This avoids the cost to purchase one or more dynamometric keys, as well as errors in the application of the maximum torque, being each single pin provided with a device that limits the maximum torque to a predefined value equivalent to the one established by the project.
Another advantage is given by the fact that the pin can be removed and re- inserted also in emergency situations, when the user is not provided with a dynamometric key.
Other characteristics are the subject of the enclosed claims and subclaims.
These and other advantages and characteristics will become evident from the detailed description of the figures, which are enclosed only for illustrative, not limiting purposes, in which:
- fig. 1 is a section with an axial plane of the pin of the present invention;
- fig. 2 is an exploded axonometric view of the pin of the present invention;
- fig. 3 is an exploded axonometric view of the front-toothed coupling mounted onto the pin of the invention. With reference to figs. 1 and 2, the pin (3) of the present invention is provided with a torque-limiting coupling device.
According to the preferred embodiment, the pin (3) is provided with a tightening crank (1 ). Without leaving the protection scope and precepts of the present invention, the tightening crank (1 ) can be replaced by a suitable section used to engage a tool, such as a hexagonal key, screwdriver or similar item. The advantage of the crank (1 ) is that it provides for manually tightening the pin in position, without the need of additional tools for simple quick mounting.
The pin (3) is designed to be inserted in the hub (4) and in the housings (5) of the fork (6).
According to the preferred embodiment of the present invention, the pin (3) is at least partially hollow, in particular being provided with a cavity in the ending section opposite the threaded end (16) of the pin. The cavity externally ends with an opening (2).
Figs. 2 and 3 illustrate the presence of a front toothed-coupling (G) composed of a first semi-coupling (7) and a second semi-coupling (8), a shaft (9), and a screw element (10).
When actuated in the tightening direction, the crank (1 ) drives into rotation the pin (3) by means of the front toothed-coupling.
The first semi-coupling (7) is positioned on the bottom of the opening (2) inside the cavity of the pin (3) and the first-coupling (7) is coupled with the pin (3).
The second semi-coupling (8) is inserted and slides axially outside the shaft (9).
The shaft (9) has a basically cylindrical body associated with a mushroom- shaped enlarged head (9a) in opposite direction to the pin (3), that is to say on the crank-side.
The crank (1 ) is provided with an opening eye (12) and is free to rotate around the shaft (9) with circular section and cylindrical direction. The shaft (9) is permanently fixed to the semi-coupling (7) by means of the screw element (10) that mutually engages the shaft (9) and the semi-coupling (7).
With reference to figs. 1 and 2, the second semi-coupling (8) is coupled with or part of a partially hexagonal sleeve (1 1 ) at the end that faces the opening (2). Although the section is a hexagonal section in this case, any polygonal section can be used without leaving the precepts and scope of the present invention.
The hexagonal section and/or the sleeve (1 1 ) are inserted inside the eye (12) of the crank, which has a complementary engagement section, with hexagonal shape in this case.
The semi-coupling (7) and the semi-coupling (8) are held in mutual contact by means of a spring element, for example a precompressed spring (13) that pushes the semi-coupling (8) against the semi-coupling (7), thus engaging the teeth of the two semi-couplings.
The semi-coupling (8) is rotated by rotating the crank (1 ), and following to the engagement of the front teeth, drives into rotation the semi-coupling (7), which moves the hollow pin (3) that is inserted in the housings (5) of the fork (6). At the end of the tightening movement, when the hollow pin (3) encounters resistance against the rotation of the crank, the resistance offered by the pin is transferred to the coupling (7), which is pushed against the semi-coupling (8) which, being free to slide inside the hollow pin (3), is maintained against the semi-coupling (7) by the only force of the spring (13). When the resistance offered by the pin and the semi-coupling (7) exceeds a predefined value, the spring is compressed and the engagement between the teeth of the semi-coupling (7) and the teeth of the semi-coupling (8) is lost. The loss of engagement between the teeth is delayed if the compression of the spring (13) is higher and therefore the calibration of the spring depends on the maximum coupling torque transmitted by the crank (1 ) to the pin (3). When the force exerted by the spring (13) on the semi-coupling (8) is exceeded, the crank (1 ) no longer transmits force to the pin (3) and idles inside the opening (2) of the pin (3), in particular around the pin (9). According to a preferred embodiment, the teeth of the front toothed-coupling are generated by means of two concurrent surfaces that generate the tooth, with one surface inclined with respect to the longitudinal axis of the coupling and the other surface parallel to the said axis.
The coupling teeth are designed for mutual engagement with the inclined side during tightening and with the parallel, or straight side during loosening. This ensures that, when the maximum torque condition is reached during tightening, the axial movement of the semi-coupling (8) is favoured, i.e. the teeth slide mutually and the semi-coupling (8) is moved axially. During loosening, the teeth engage with the straight sides, that is to say parallel to the longitudinal axis of the coupling, thus allowing for loosening. According to an executive embodiment not illustrated in the enclosed figures, a compression adjustment means of the spring is provided, such as a compression pin transversal to the pin (3) actuating on the part of the spring (13) that faces the opening, the said compression pin actuating on the length of the spring, which is shortened or extended according to the maximum torque to be transmitted. According to an additional executive embodiment, the length of the spring is changed by actuating on the shaft (9), for instance through the movement or rotation of the shaft (9), which is provided with a crown or section of circular crown that actuates on the part of the spring (13) that faces the opening, thus varying the spring length and pre-compression charge, and consequently the maximum torque to be transmitted. The present invention also relates to a cycle or motorcycle or cycle or mountain bikes or similar vehicles characterised in that it comprises a pin according to the present invention.

Claims

Claims
1. Wheel pin (3) for cycles or motorcycles or similar vehicles of the type designed to be inserted in housings (5) of the fork (6) inside the wheel hub (4), and tightened to one of the two housings and/or tightened to a fixing nut characterised in that the pin (3) comprises a built-in torque-limiting coupling device.
2. Wheel pin (3) as claimed in the above claim, characterised that the said torque-limiting coupling device comprises at least a front-toothed coupling (G), composed of a first semi-coupling (7) and a second semi-coupling (8) that are mutually engaged, in which engagement is ensured by a precompressed, compressed or in any case compressible spring (13), the said spring being designed to push against the second semi-coupling (8) to engage it with the first semi-coupling (7) until a predefined resistance force that coincides with the maximum coupling torque is reached.
3. Wheel pin (3) as claimed in one or more of the above claims, characterised in that the pin (3) is at least partially hollow and provided with end with thread
(16), in particular a cavity in the end opposite the threaded end (16) of the pin (3), the said cavity ending outside with an opening (2).
4. Wheel pin (3) as claimed in one or more of the above claims, characterised in that the first semi-coupling (7) is positioned on the bottom of the opening (2), inside the cavity of the pin (3) and the first semi-coupling (7) is joined with the pin (3), the second semi-coupling (8) being inserted and sliding axially inside the said cavity.
5. Wheel pin (3) as claimed in one or more of the above claims, characterised in that it is also provided with a shaft (9) with basically cylindrical body associated with a mushroom-shaped enlarged head (9a) and opposite the pin (3), the said second semi-coupling (8) being inserted and sliding axially outside the shaft (9) with circular section and cylindrical direction.
6. Wheel pin (3) as claimed in one or more of the above claims, characterised in that it also comprises a tightening crank (1 ) and/or an engagement section for a tool, such as a hexagonal key, screwdriver or similar tool, used to make the crank (1 ) drive the pin (3) into rotation by means of the front-toothed coupling, the said crank (1 ) being provided with at least one opening eye (12) and being free to rotate around the shaft (9).
7. Wheel pin (3) as claimed in one or more of the above claims, characterised in that the shaft (9) is permanently fitted to the semi-coupling (7) by means of a screw element (10) or similar element that mutually engages the shaft (9) and the semi-coupling (7).
8. Wheel pin (3) as claimed in one or more of the above claims, characterised in that the second semi-coupling (8) is associated with or part of a sleeve (1 1 ) with at least partial polygonal, preferably hexagonal, configuration at the end that faces the opening (2), the said hexagonal section and/or sleeve (1 1 ) being inserted inside the eye (12) of the crank (1 ) with complementary engagement profile.
9. Wheel pin (3) as claimed in one or more of the preceding claims, characterised in that, when the resistance offered by the pin and consequently by the semi-coupling (7) at the end of the tightening movement exceeds a predefined force, the spring is compressed until the teeth of the semi-coupling (7) and the teeth of the semi-coupling (8) are disengaged, being the calibration of the spring (13) directly proportional to the maximum torque transmitted by the coupling to the front teeth.
10. Wheel pin (3) as claimed in one or more of the above claims, characterised in that the teeth of the front toothed coupling are generated by means of two concurrent surfaces that generate each tooth, of which one surface is inclined with respect to the longitudinal axis of the coupling and one surface is parallel to the said axis, the teeth of the coupling being designed to mutually engage with the inclined side during tightening and with the parallel, or straight, side during loosening.
11. Wheel pin (3) as claimed in one or more of the above claims, characterised in that a compression adjustment means of the spring is provided, being composed of a compression pin transversal to the pin (3) that actuates on the part of the spring (13) that faces the opening, the said compression pin being designed to shorten or extend the length of the spring according to the maximum torque to be transmitted.
12. Wheel pin (3) as claimed in one or more of the above claims, characterised in that the shaft (9) can be adjusted by sliding with respect to the pin (3) and is provided with a crown or section of circular crown that actuates on the part of the spring (13) that faces the opening, determining a variation of the length of the spring and the precompression load of the spring.
13. Cycle or motorcycle or bicycle or mountain bike or similar vehicles, characterised by the fact that it comprises a pin according to one or more of the above claims.
PCT/EP2008/055660 2007-05-25 2008-05-07 Wheel pin for cycles and motorcycles provided with torque-limiting coupling device Ceased WO2008145496A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMC20070108 ITMC20070108A1 (en) 2007-05-25 2007-05-25 WHEEL AXLE FOR CYCLES AND MOTORCYCLES PROVIDED WITH A TIGHTENING TORQUE LIMITER DEVICE.
ITMC2007A108 2007-05-25

Publications (2)

Publication Number Publication Date
WO2008145496A2 true WO2008145496A2 (en) 2008-12-04
WO2008145496A3 WO2008145496A3 (en) 2009-02-05

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PCT/EP2008/055660 Ceased WO2008145496A2 (en) 2007-05-25 2008-05-07 Wheel pin for cycles and motorcycles provided with torque-limiting coupling device

Country Status (2)

Country Link
IT (1) ITMC20070108A1 (en)
WO (1) WO2008145496A2 (en)

Cited By (15)

* Cited by examiner, † Cited by third party
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ITFI20100089A1 (en) * 2010-05-07 2011-11-08 Tech Suspension S R L RAPID LOCKING / UNLOCKING DEVICE FOR WHEELS OF MOTORCYCLES AND BICYCLES.
CN103062245A (en) * 2011-10-18 2013-04-24 昆山亨利金属科技有限公司 Bilateral type displacing hub ratchet structure
EP2594412A1 (en) * 2011-11-17 2013-05-22 Kunshan Henry Metal Technology Co., Ltd. Hub assembly with the ratchet member movable in two directions
DE102013013819A1 (en) * 2013-08-22 2015-02-26 Dt Swiss Ag Quick release
EP2937244A1 (en) * 2014-04-22 2015-10-28 Thule Sweden AB A tensioning device for a bicycle support assembly or a load carrier
DE102014112084A1 (en) * 2014-08-22 2016-02-25 Dt Swiss Ag Quick clamping device
EP3040259A1 (en) 2014-12-31 2016-07-06 Martin Achenbach Clamping device
CN106314657A (en) * 2015-07-02 2017-01-11 林昌慧 Button type angle-adjustable quick-release handle
DE102016103080A1 (en) * 2016-02-22 2017-08-24 Dt Swiss Ag Quick clamping device
EP3345819A1 (en) * 2017-01-06 2018-07-11 Chang Hui Lin Angle adjustable quick release
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US10850938B2 (en) 2017-10-09 2020-12-01 Gpcp Ip Holdings Llc Mechanical sheet product dispenser
US11351928B2 (en) 2019-06-03 2022-06-07 Yakima Products, Inc. Torque limiting clamp actuator
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US9616963B2 (en) 2014-08-22 2017-04-11 Dt Swiss Inc. Quick release device
EP3040259A1 (en) 2014-12-31 2016-07-06 Martin Achenbach Clamping device
CN106314657A (en) * 2015-07-02 2017-01-11 林昌慧 Button type angle-adjustable quick-release handle
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US10214263B2 (en) * 2016-08-10 2019-02-26 Chang Hui Lin Angle adjustable quick release
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US11458765B2 (en) 2017-02-14 2022-10-04 Dt Swiss Inc. Quick release device
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US10730345B2 (en) 2017-05-12 2020-08-04 Mavic S.A.S. Device for fastening a cycle wheel
FR3066172A1 (en) * 2017-05-12 2018-11-16 Mavic S.A.S. DEVICE FOR FIXING A CYCLE WHEEL
EP3401200A1 (en) * 2017-05-12 2018-11-14 Mavic S.A.S. Device for attachment of a bicycle wheel
US10850938B2 (en) 2017-10-09 2020-12-01 Gpcp Ip Holdings Llc Mechanical sheet product dispenser
US11780699B2 (en) 2017-10-09 2023-10-10 Gpcp Ip Holdings Llc Sheet product dispenser with spring assembly
US11351928B2 (en) 2019-06-03 2022-06-07 Yakima Products, Inc. Torque limiting clamp actuator

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