Bicycle equipment provided with an electric power supply unit
An electrically powered bicycle equipment has a component with a seat for removable attachment of an electric power supply unit, and a clamping device of the electric power supply unit to the component. The clamping device is pivotally supported by the component or the electric power supply unit about a first geometric axis stationary with respect thereto, and about a second geometric axis, which is parallel to, pivotal about, and not translatable with respect to, the first geometric axis. Either the component or the electric power supply unit has a retainer member and the clamping device has a retainable member that is urged against the retainer member. The rotation of the clamping device in a first direction about the first axis and in a second direction opposed to the first direction about the second axis allows the retainable member to be brought beyond the retainer member during clamping and unclamping.
1. An electrically powered bicycle equipment, comprising:
an electric power supply unit comprising one or more secondary cells,
a component having a seat for removable attachment of the electric power supply unit,
the seat and the electric power supply unit having matching electric contacts that establish electric connection in a seated state of the electric power supply unit, and
at least one clamping device of the electric power supply unit to the component in the seated state of the electric power supply unit,
wherein said at least one clamping device is pivotally supported by one of the component and the electric power supply unit about a first geometric axis stationary with respect to said one of the component and the electric power supply unit, and about a second geometric axis,
the geometric second axis being parallel to, pivotal about, and not translatable with respect to, the first geometric axis,
wherein the other one of the component and the electric power supply unit has a retainer member and the clamping device has a retainable member,
wherein in a clamped status of the clamping device:
the retainable member is urged against the retainer member in an oriented removal direction of the electric power supply unit from the component, orthogonal to the first geometric axis,
the first axis is interposed between the second axis and the retainable and retainer members in the oriented removal direction,
the second axis is closer to said one of the component and the electric power supply unit with respect to the first axis in a third direction orthogonal to the direction of the rotation axes and to the oriented removal direction, and
wherein the rotation of the clamping device in a first direction about the first axis and in a second direction opposed to the first direction about the second axis allows the retainable member to be brought beyond the retainer member during clamping and unclamping.
2. The electrically powered bicycle equipment according to claim 1 , wherein the retainable member and the retainer member embody an effective coupling in retaining, in the clamped status of the clamping device, the electric power supply unit also in the third direction.
3. The electrically powered bicycle equipment according to claim 2 , wherein the retainable member and the retainer member have mutually abutting surfaces in the clamped status of the clamping device, said surfaces being slanted with respect to the removal direction, a first edge being comparatively close to the first axis in the removal direction and to said one of the component and the electric power supply unit in the third direction, and a second edge opposed to the first edge being comparatively far from the first axis in the removal direction and from said one of the component and the electric power supply unit in the third direction.
4. The electrically powered bicycle equipment according to claim 1 , wherein the retainable member and the retainer member comprise a protrusion and a cavity oversized with respect to the protrusion in the removal direction but not in the direction of the rotation axes.
5. The electrically powered bicycle equipment according to claim 1 , wherein the first axis and the second axis are defined by two opposed ends of a rigid member, having sufficient stiffness to withstand the traction in the clamped status of the clamping device, the two opposed ends extending in respective pivoting seats formed on facing faces, in the clamped status of the clamping device, of said one of the component and the electric power supply unit and of the clamping device.
6. The electrically powered bicycle equipment according to claim 5 , wherein the rigid member is a possibly split quadrangular ring.
7. The electrically powered bicycle equipment according to claim 6 , wherein at least one of the pivoting seats comprises a cylindrical undercut cavity.
8. The electrically powered bicycle equipment according to claim 6 , wherein the rigid member is a quadrangular ring split at one of the two opposed sides, the corresponding pivoting seat comprising a through hole or a pair of coaxial blind holes.
9. The electrically powered bicycle equipment according to claim 1 , wherein the seat for removable attachment of the electric power supply unit is configured to retain at least one region of the electric power supply unit, substantially opposed to a region involved by the clamping device, against removal from the component in at least one way in the direction of the rotation axes and/or in at least one way in the third direction.
10. The electrically powered bicycle equipment according to claim 1 , wherein the seat is configured to allow and possibly oblige seating the electric power supply unit through a roto-translational movement.
11. The electrically powered bicycle equipment according to claim 1 , wherein the electric contacts of one and a same between the electric power supply unit and the component are of the pogo pin type.
12. The electrically powered bicycle equipment according to claim 1 , wherein in at least one of the electric power supply unit and the component, the electric ground contact is more outcropping than the other electric contacts.
13. The electrically powered bicycle equipment according to claim 1 , wherein the bicycle equipment is a bicycle derailleur comprising:
a plurality of mutually movable components, comprising a support body configured to be attached to a bicycle frame, a chain guide and a pair of connecting arms extended between the support body and the chain guide, and
a geared motor controlling the mutual motion between chain guide and support body,
wherein said component having a seat for the electric power supply unit is a preselected component of the mutually movable components.
14. The electrically powered bicycle equipment according to claim 13 , wherein
the derailleur is a front derailleur.
15. The electrically powered bicycle equipment according to claim 13 , wherein
the derailleur is a rear derailleur and the preselected component is one of the connecting arms.
16. The electrically powered bicycle equipment according to claim 14 , wherein the geared motor is housed in the support body.
17. The electrically powered bicycle equipment according to claim 15 , wherein the preselected component is the proximal connecting arm.
18. The electrically powered bicycle equipment according to claim 15 , wherein the geared motor is housed in the support body.