Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
  • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
  • B62M6/80—Accessories, e.g. power sources; Arrangements thereof
  • B62M6/90—Batteries
• • 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 SIDE-CARS, FORECARS, OR THE LIKE
  • B62K19/00—Cycle frames
  • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
  • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
  • B62M6/40—Rider propelled cycles with auxiliary electric motor

Definitions

• the invention relates to a bicycle frame, in particular for electric bicycles, with a plurality of interconnected frame struts which form at least a down-tube, a seat tube and a steering tube of the bicycle frame, with a support device for an electric motor and with a device for the releasable fastening of an energy supply unit for the electric motor to the down-tube of the bicycle frame, wherein the fastening device for the energy supply unit has a pivot bearing for the energy supply unit as a first abutment and has a second abutment.
• the invention furthermore relates to a bicycle, in particular electric bicycle, with a corresponding bicycle frame, with an electric motor and with an energy supply unit for the electric motor, which energy supply unit has a housing and is fastened releasably to the bicycle frame, and the invention also relates to an energy supply unit for such a bicycle, with a housing having a lower side, a rear side, a top side, a front side and transverse sides, with a chargeable battery unit in a housing interior, with a lock having an openable latch catch, and with a connector plug.
• Electric bicycles sometimes also called pedelecs or, when licensed for higher speeds, also called S pedelecs, have an electric motor which supports the driving force generated by the cyclist via the pedal crank.
• the electric motors normally act only as a booster, and the power assistance is limited to certain maximum speeds of, for example, 25 km/h or 45 km/h depending on the design of the electric bicycle.
• the electric motors can be arranged as hub motors in the front or rear wheel or as a centre motor in the region of the bottom-bracket bearing, and an energy supply unit has to be provided for the electric motors, in order to supply current, which energy supply unit has to be carried along during the journey, and is intended to be regularly removable for recharging purposes, is intended to be easily accessible, is intended not, as far as possible, to affect the handling of the bicycle and, at the same time, has to be fastened securely to the bicycle frame in such a manner that it does not become detached even in the event of loads which occur due to a very wide variety of route conditions and handling.
• An energy supply unit with chargeable battery units generally has a housing composed of plastic, a weight of up to 5 kilos and a volume of several litres, as a result of which particular challenges are posed in respect of the installation location and the installation of the energy supply unit on the bicycle frame of the bicycle.
• a common solution currently on the market involves the energy supply unit being integrated into the bicycle luggage rack above the rear wheel and being inserted there into a receiving compartment.
• the holder is pivoted towards one side transversely with respect to the direction of travel, wherein the lock, on the one hand, and a handle on the battery holder, on the other hand, have to be gripped from opposite sides of the bicycle in order to pivot away and remove the battery.
• the multi-part battery holder can alternatively also be attached to the seat tube or to the luggage rack.
• DE 10 2011 005 520 A1 discloses a bicycle frame, in which the down-tube consists of at least three separate struts which, at least in sections, run next to one another and spaced apart from one another in order to create a receiving space for an energy supply unit between the frame struts of the down-tube.
• the design is realized in such a manner that the energy supply unit is fastened from below to an upper strut of the multi-part down-tube.
• the two lateral struts of the down-tube are partially bent outwards in order to create the necessary construction space for receiving the energy supply unit. This causes the down-tube to be comparatively wide and the lateral struts may interfere with the cyclist during pedalling. Since the energy supply unit is arranged suspended in the downwardly open receiving compartment, the installation is made more difficult and all of the weight has to be entirely absorbed by the abutments for the energy supply unit.
• the invention proposes, for a bicycle frame, that the frame strut forming the down-tube of the bicycle frame is partially provided, on a flank facing the seat tube, with a cross-sectional deformation for forming a receiving depression for the energy supply unit, the top flank of which receiving depression forms a flattened, preferably planar, bearing surface for the energy supply unit, to which bearing surface a hook element is fastened as a second abutment for the energy supply unit, wherein the pivot bearing projects over the flank of the undeformed region of the down-tube towards the seat tube. If the down-tube is deformed in order to create a receiving depression on the upper side of the down-tube, a relatively low fastening position for the energy supply unit results.
• the energy supply unit in turn, can then at least partially fill the space which has been created by the receiving depression in the down-tube.
• This generates additional installation space which makes it possible, in particular in the case of bicycle frames with a top tube, such as, for example, in the case of diamond frames or trapezium frames, for the top tube to be able to run at a relatively low position between seat tube and steering tube, as a result of which, in turn, easier mounting of the bicycle is made possible.
• the energy supply unit can be mountable from above and is downwardly supported on the down-tube, the weight is advantageously supported on the upper side of the down-tube and also the installation is made easier.
• the top flank of the receiving depression merges in each case via an oblique transition flank into the undeformed region of the down-tube that is integrally adjacent on the down-tube, wherein the transition flank has at least one central section which runs obliquely with respect to the top flank.
• the corresponding configuration not only makes it possible to obtain the receiving depression by means of hydraulic pressure moulding processes even in the case of frame struts consisting of round tubes, but the transition flanks can serve at the same time such that the energy supply unit, when the housing therefor is correspondingly configured, can be matched in an approximately interlocking manner to the deformations in the down-tube and, by this means, acceleration forces in and counter to the direction of travel can be cushioned by means of the transition flanks in order to relieve the abutments of load.
• the rear transition flank runs in a more steeply angled manner than the front transition flank, and/or if each transition flank tapers at an acute angle from the top flank to the flank of the undeformed region.
• the pivot bearing has a pivot bolt which extends transversely with respect to the down-tube and is fastened to the down-tube at an adjustable, projecting distance.
• a pivot bolt Via a pivot bolt, not only is secure positioning of an energy supply unit upon installation, and easy handleability achieved, but also, at the same time, relatively high forces can be cushioned via the pivot bearing. Since the pivot bearing is located outside the receiving depression and above the undeformed flank of the down-tube, said pivot bearing can be at least partially surrounded by the housing of the energy supply unit and, as a consequence thereof, the inertial forces which arise during cycling can be reliably absorbed and introduced into the down-tube.
• the adjustability of the distance between pivot bolt and the top flank of the receiving depression, or the undeformed flank of the down-tube permits a fine adjustment with which manufacturing tolerances firstly during the hydraulic moulding and secondly possibly also on the housing of the energy supply unit, or wear-induced abrasions, can also be compensated for.
• the pivot bolt is provided, preferably integrally, with a locking web having a central elongated hole and is screwable or screwed to the rear transition flank between top flank of the receiving depression and undeformed flank of the down-tube.
• the fine adjustment can be undertaken in a particularly simple manner via a screw connection or elongated holes.
• a contact plug for the electrical contact connection of an energy supply unit to an electric motor is advantageously arranged on the flattened top flank between hook element and pivot bearing, wherein the contact plug is preferably designed as a magnetic plug. Since a flattened, preferably planar, region is produced on the upper side of the down-tube via the cross-sectional deformation and receiving depression, a contact plug, which is optionally connected to the electric motor via an internal cable through the down-tube, can be extremely advantageously positioned and fastened there. At the same time, it is ensured, via a magnetic plug, that, even when an energy supply unit is fitted, an electrical contact connection between the contact plug on the bicycle frame and a connector plug on the energy supply unit is permanently ensured.
• the hook element and/or the pivot bearing are preferably composed of metal, as a result of which, even in the case of a relatively small constructional form of the elements forming the abutments, relatively high forces can be absorbed.
• the hook element is preferably also fastened adjustably to the top flank of the receiving depression for fine adjustment.
• the abovementioned object is also achieved in the case of a bicycle with an electric motor and a bicycle frame according to the invention and an energy supply unit fastened thereto by the housing of the energy supply unit being provided with a pivoting receptacle for interaction with the pivot bearing fastened to the bicycle frame and, spaced apart from said pivot bearing, being provided with a latch catch for interaction with the hook element on the bicycle frame, wherein at least one pressure element which is elastically deformable during the fastening of the energy supply unit and is intended for building up a clamping stress in the abutments and/or between housing and receiving depression in the installed state of the energy supply unit on the bicycle frame is arranged on a lower side of the housing.
• a relatively large surface region in which portions of the housing and portions of the bicycle frame run parallel to and at a constant distance from one another is produced when the energy supply unit is shaped in a matching manner.
• Said region can contain elastically deformable pressure elements which can preferably project over the housing wall in such a manner that they are deformed during the installation and build up a clamping stress before the latch catch latches on the hook element and prevents the energy supply unit from being released.
• an energy supply unit for use with a corresponding bicycle frame or bicycle
• the housing is provided with a pivoting receptacle for interaction with the pivot bearing fastened to the bicycle frame, and, at a distance from said pivoting receptacle, is provided with the latch catch for interaction with the hook element on the bicycle frame, wherein at least one pressure element which is elastically deformable during the fastening of the energy supply unit and is intended for building up a clamping stress in the abutments and/or between housing and receiving depression in the installed state of the energy supply unit on the bicycle frame is arranged on the lower side of the housing.
• the housing is provided, at least in the lower region, with a profiling which is matched to the contour of the receiving depression, and therefore the forces arising during the journey between mutually opposite surfaces in the region of the receiving depression can be transmitted to the down-tube, on the one hand, and to the housing of the energy supply unit, on the other hand, wherein, at the same time, the bicycle as a whole can obtain an attractive design because the energy supply unit operates in a manner integrated into the bicycle frame.
• the connector plug is preferably arranged on the housing lower side, preferably between latch catch and pivoting receptacle, and/or it is designed as a bushing having a cylindrical blind hole and contact pins arranged recessed in relation to the housing lower side.
• the lower side of the housing preferably has a flat, preferably planar, housing base, beyond which the transverse sides of the housing project on both sides with a side web, wherein the distance between the side webs is matched to the width of the frame strut forming the down-tube in the region of the receiving depression.
• a plurality of elastic pressure elements are arranged on the lower side.
• one or more of the pressure elements at least partially extend to in front of the two side webs, and therefore the sealing is improved and, at the same time, the housing of the energy supply unit is additionally laterally stabilized on the down-tube during the journey.
• the pivoting receptacle preferably consists of a housing taper having a preferably T-shaped cross section, said housing taper being formed on the housing rear side at a distance from the housing lower side.
• the housing taper preferably has an upper and a lower boundary wall which can at least partially run parallel to each other and/or parallel to the base of the housing lower side. Since, overall, the down-tube and, in this respect, also the surfaces acting between housing and pivot bearing are oblique with respect to the direction of travel, the inertial forces and the weight during the journey lead to net forces which act obliquely on the interacting surfaces on the housing, on the one hand, and on the bicycle frame or pivot bearing, on the other hand.
• the housing taper can be provided, advantageously on the upper boundary wall, with an insertion slope which widens the clear width of the housing taper and facilitates the pushing of pivoting receptacle and pivot bearing one into the other.
• the housing of the energy supply unit is preferably of substantially V-shape design on the front side and on the rear side, and/or is in each case provided, adjacent to the lower side, with an oblique surface for interaction with the transition flanks on the bicycle frame, which transition flanks are oblique with respect to the longitudinal axis of the down-tube, wherein, preferably, pressure elements are arranged at least on the front oblique surface.
• the housing taper is preferably formed on the rear oblique surface.
• the latch catch is preferably provided with a closing cam, which is prestressed by means of a spring into the closed position, for gripping under a hook projection on the frame-side hook element.
• Fig. 1 shows, in schematically highly simplified form, a bicycle frame according to the invention with an energy supply unit fitted, in a side view;
• Fig. 2 shows the bicycle frame from Fig. 1 with the energy supply unit removed, in a side view
• Fig. 3 shows a detailed view of the down-tube of a bicycle frame according to the invention on the front transition flank of the receiving depression to the undeformed region of the down-tube;
• Fig. 4 shows, perspectively, the pivot bearing for the energy supply unit on the rear transition flank between receiving depression and undeformed down-tube;
• Fig. 5 shows the energy supply unit in a side view
• Fig. 6 shows the energy supply unit from Fig. 5 in a perspective view of the lower side and front side;
• Fig. 7 shows the energy supply unit from Fig. 5 in a side view obliquely from below onto the transition side and rear side;
• Fig. 8 shows the receiving depression on the rear side in a perspective view
• Figs. 9A-9C show the operation to install the energy supply unit on the down-tube in three substeps.
• Fig. 10 shows a vertical section, partially broken open, through the receiving region in the down-tube when the energy supply unit is fitted.
• Figures 1 and 2 show a bicycle frame 10 of a bicycle (not illustrated further). Of the bicycle frame 10, only the front frame part with steering tube 1, seat tube 2, down-tube 3 and top tube 4 are illustrated, wherein down-tube 3 and top tube 4 together with the steering tube 1 form a front junction point, and seat tube 2 and down-tube 3 form a rear junction point in the region of a bottom-bracket bearing tube 5.
• reference number 6 denotes an electric motor which could be fitted here as a centre motor in the region of the bottom-bracket bearing tube 5 in a suitable manner via a fastening device (not illustrated further), but could also be fastened there via a suitable fastening plate which, for example, connects seat tube 2 and down-tube 3 to each other.
• the electric motor could also be assigned as a hub motor to the front wheel or to the rear wheel.
• the further components of a bicycle such as front wheel fork, handlebars, front wheel, rear wheel, chain struts, frame struts, seat, brakes, etc. are not illustrated in order to make it easier to explain the invention.
• an energy supply unit which is denoted overall by reference number 30 in the figures is completely fastened to the down-tube 3.
• the down-tube 3, which is preferably composed of a hydraulically moulded metal tube, but could also be composed of a fibre composite material, such as, in particular, carbon fibre plastic, has, on a flank 3A of the down-tube 3, which flank faces the seat tube 2, a receiving depression 7 which is achieved by means of a partial cross-sectional deformation of the down-tube 3.
• a cross-sectional deformation can be obtained by hydraulic pressure deformation in the case of metal tubes, and can already be obtained during the production of the corresponding frame part in the case of carbon fibre tubes.
• the receiving depression 7 is only partially formed on the down-tube and extends here over approximately half the length of the down-tube 3, but is slightly offset eccentrically with respect to the rear end of the down-tube 3.
• the designations at the front and rear refer here in each case to the direction of travel of a bicycle.
• the down-tube 3 is deformed in such a manner that, in the region of the receiving depression 7, the down-tube 3 obtains a flattened top flank 8, which is substantially planar in the exemplary embodiment shown and which merges firstly via a front transition flank 9 and furthermore via a rear transition flank 11 into the respectively undeformed region of the down-tube 3 having a top flank 3A which is curved in a correspondingly oval, round or flattened manner and faces the seat tube 2.
• the receiving depression 7 is virtually completely filled by said energy supply unit and the energy supply unit 30 bears against the top flank 8 in the region of the receiving depression 7.
• the receiving depression 7 provides an increase in construction space between down-tube 3 and top tube 4, it is possible to fit an energy supply unit 30 which is furthermore formed with a relatively large volume and in the housing interior of which a sufficient number of chargeable battery units can be accommodated, without it being necessary, compared to customary designs, to offset the top tube 4 upwards.
• a relatively low centre of gravity of the energy supply unit 30 on the bicycle frame 10 can be realized by the receiving depression 7 on the upper side of the down-tube 3.
• the energy supply unit 30 is fastened to the down-tube 3 by means of two abutments which are spaced apart from each other, and is held in a securely fitted manner and, in the installed state, is supported with the weight thereof on the upper side of the receiving depression 7 in the down-tube 3.
• a pivot bearing 12 which is fitted in the region of the rear transition flank 11 serves as the first abutment, and a hook element 13, which is fastened relatively far forward in the vicinity of the front transition flank 9 on the top side 8 of the receiving depression 7, serves as the second abutment.
• Fig. 3 shows a partial section of the down-tube 3 in the region of the front transition flank of the receiving depression 7.
• the transition flank 9 widens from the flank 3A in the undeformed region in a V-shaped manner to the flattened top flank 8 of the receiving depression 7, wherein a central region 16, in which the front transition flank 9 runs at an oblique angle of here approximately 45° with respect to the longitudinal axis of the down-tube or the top flank 8 of the receiving depression 7, is formed between two transition sections 14 and 15 having slightly curved regions.
• the hook element 13 which, as will also be explained, interacts with a latch catch of a lock 37 of the energy supply unit 30 is fastened to the top flank 8.
• the hook element 13 has a baseplate 17 on which a vertically protruding hook plate 18 is formed centrally, the hook plate forming a hook projection 19 which projects forwards towards the front transition flank 9.
• the baseplate 17 is provided with elongated holes 20, into which fastening screws 21 grip in such a manner that the hook element 13 is fitted to the top flank 8 substantially exactly centrally with respect to the width of the down-tube 3, but the position of the hook projection 19 can be adjusted with little play by displacement of the baseplate 17 forward or rearward.
• a contact plug 60 is fastened to the top flank 8 of the receiving depression 7, behind the hook element 13, said contact plug, in the exemplary embodiment shown, having a rectangular baseplate 61 which is screwed to the top flank 8.
• the baseplate 61 together with a plug socket 62 which projects above the baseplate 61 and has two contact bushings 63 covers a window cutout (not shown) within the top flank 8, via which window cutout the contact plug 60 can be connected to cables (not shown) which run in the interior of the down-tube 3.
• the cavity of the down-tube can then serve, as it were, as a switch cabinet for the protected arrangement of all of the electric lines and connectors.
• Fig. 4 shows, in detail, the pivot bearing 12 in the installed position on the rear transition flank 11 between the top flank 8 of the receiving depression 7 and the flank 3A in the undeformed region of the down-tube 3.
• the pivot bearing 12 consists substantially of a pivot bolt 22 which is tubular here and the bolt axis of which is perpendicular to the longitudinal axis of the down-tube 3 or perpendicular to the direction of travel.
• the pivot bolt 22 is connected to a locking web 23 which is provided with an elongated hole 24 in order to fasten the pivot bearing 12 releasably to an obliquely running central section 25 in the region of the rear transition flank 11 by means of screws (not illustrated), wherein a fine adjustment of the position of the pivot bolt 22 with respect to the distance from the hook element or with respect to the vertical offset with respect to the top flank 8 can be initiated via the elongated hole 24.
• the rear transition flank 11 also has a front transition section 26 and a rear transition section (not visible here) on which the rear transition flank 11 tapers, and the central section 25 runs obliquely with respect to the top side of the top flank 8.
• the oblique angle of the rear transition flank 11 has a steeper profile, at approximately 60°, than the oblique angle (45°) at the front transition flank 9.
• the pivot bolt 22 lies outside the receiving depression 7 and is located, with respect to the flank 3A of the undeformed region of the down-tube 3, in a position projecting towards the seat tube 2.
• the energy supply unit 30 has a housing which is denoted overall by reference number 31 and which is provided with a lower side 32, a rear side 33, a front side 34, a top side 35 and, on both sides in each case, with a transverse side 36, said sides preferably being composed of plastic and enclosing a housing interior in which one or more chargeable battery units are arranged.
• Both the front side 34 and the rear side 33 have a triangular, substantially equal-sided shape here in a side view, wherein in each case the housing section 34A located adjacent to the lower side 32 on the front side and 33A on the rear side 33 extends as an oblique surface relative to the lower side 32 at the same oblique angle at which the front transition flank 9 or rear transition flank 11 of the receiving depression 7 runs relative to the top flank 8.
• the housing section 34A on the front side 34 runs correspondingly at an angle of approximately 45°
• the housing section 33A on the rear side 33 runs at an angle of approximately 60°
• rounded transition regions 32A, 32B are located between the housing sections (oblique surfaces) 33A, 34A and the lower side 32.
• the energy supply unit 30 is provided with a lock 37 which has a latch catch which is pretensioned into the closed position counter to the restoring force of a spring, as will also be explained, and which interacts with the hook element during the installation or removal of the energy supply unit 30.
• the latch catch is rotatable about the lock axis of the lock 37 and is located at a distance from the base 38 on the lower side 32 of the housing 31 of the energy supply unit 30 within an indentation 39 which is formed there and which creates a sufficient amount of receiving space for the hook element to be able to dip into the indentation 39 during the installation.
• a connector plug 40 is formed on the lower side 32 of the housing 31, said connector plug comprising a bushing 41 having a cylindrical blind hole 42 in which two contact pins 41A which are recessed with respect to the housing lower side 32 are formed, the positioning of which contact pins is matched to the contact bushings 63 in the contact plug 60 which is fastened to the bicycle frame in the region of the receiving depression.
• a housing taper 43 is formed on the rear side 33 of the housing 31, in the region of the rear oblique surfaces 33A adjacent to the lower side, the housing taper being matched to interact with the pivot bolt (22, Fig. 4) of the pivot bearing. As can be seen particularly readily in Fig.
• the housing taper 43 forming the pivoting receptacle extends, inter alia, on both sides of a cutout 44, into which, in the installed state of the energy supply unit 30 on the bicycle frame, the locking web can dip.
• the housing taper 43 On both sides of the cutout 44, the housing taper 43 has a rounded base wall 45 which blocks the housing taper 43 in relation to the housing interior.
• the cutout 44 and the housing taper 43 have overall an approximately T-shaped cross section.
• An upper boundary wall 46 and a lower boundary wall 47 which run parallel to each other over a small subsection and preferably also parallel to the lower side 32 of the housing 31 are formed in each case in the region adjacent to the mouth opening of the housing taper 43.
• the upper boundary wall 46 is provided with an insertion slope 46A in the region of the mouth.
• the housing taper 43 is designed overall in such a manner that the pivot bolt is accommodated with as little play as possible within the housing taper 43 on installation, with it being very substantially possible also for the pivoting recept
• a plurality of pressure elements 48, 49, 50, in each case in pairs here, are arranged in the region of the lower side 32 of the housing, preferably also in the region of the front oblique surface 34A and in the region of the rear oblique surface 35A, the pressure elements consisting of elastically deformable elastomer plates and being fastened to the respective housing wall in a manner projecting over the lower side 32 or oblique surfaces 34A, 35A.
• At least the pressure pieces 48, 50 in the region of the lower side 32 or rear oblique surface 35A extend not only over the substantially planar base 38, but also overlap laterally beyond said base and bear there against the inside of side webs 36A with which the transverse sides 36 project downwards over the lower side 32 and the housing base 38 formed there.
• the side webs 36A can then also extend to the side of the down-tube 3, as Fig. 10 particularly readily shows, with direct contact between the plastic of the side webs 36A and the circumference of the remaining cross section of the down-tube 3 being prevented by means of the pressure elements 50 which are at least partially located in between and consist of elastic material.
• FIGs. 9A-9C in which one possible installation operation of an energy supply unit 30 on the down-tube 3 in the region of the receiving depression 7 is shown schematically.
• the energy supply unit 30, which is provided in the vicinity of the top side 35 with a handle cutout 51 in the transverse sides 36, is initially guided by means of the downwardly projecting side webs 36A on the down-tube 3 in the region of the receiving depression 7. Since the contour of the lower side of the energy supply unit 30 is matched in a relatively precisely shaped manner to the profiling of the receiving depression 7, the housing 31 of the energy supply unit 30 initially still rests on the flank 3A or on the transition section of the front transition flank 9.
• the energy supply unit 30 is moved slowly to the rear, very substantially parallel to the top flank, towards the rear transition flank 11 without the pivot bolt 22 already interacting with the housing taper 43.
• the housing taper 43 On further pushing downwards, the housing taper 43 first of all gradually slides with the insertion slope on the upper boundary wall 46, as shown in Fig. 9B, onto the pivot bolt 22 and at the same time the housing 31 slides with the front oblique surface 33A along the front transition flank 9.
• the housing taper 43 is then completely pushed onto the pivot bolt 22, wherein, by means of the matched contours of the housing 30 and the receiving depression, the lower side 32 of the housing still lies at a distance from the top flank before the housing 31 is pivoted about the pivot bolt 22 in such a manner that the connector plug 40 on the housing 31 of the energy supply unit 30 and the contact plug 60 on the base of the receiving depression 7 grip one inside the other, with the contact pins and contact bushings making contact, and at the same time the latch catch 55 of the lock 37, which latch catch here has a closing cam 56 which is part of a closing ring which is rotatable counter to the restoring force of a spring 57, grips under the hook projection 19 on the hook element 13.
• the closing cam 56 is preferably wider than the hook projection 19 on the hook element 13.
• the latch catch 55 is optionally slightly rotated and then presses against the lower side of the hook element 13 in the manner of a clamping hook.
• the pressure elements 48, 49, 50 are compressed, as indicated schematically in Fig. 9C, thereby building up a clamping force which acts both in the region of the rear abutment between pivot bolt 22 and housing taper 43 and in the region of the front abutment between hook element 13 and latch catch 55 of the lock 37.
• the rear boundary wall 39A of the cutout 39 can interact with the rear of the hook element 13 and, in the locking state, can additionally prevent movements parallel to the top flank 8 or longitudinal axis of the down-tube 3.
• the lock 37 is opened, for example, by means of a key 59, as illustrated in Fig.
• the energy supply unit 30 can subsequently either be pivoted further about the pivot bolt 22 or else can be pushed forwards in a forwards movement as soon as contact plug 60 and connector plug 40 no longer grip one inside the other.
• the installation can also take place in such a manner that first of all the housing 31 is slid with the taper 43 onto the pivot bolt 22, and is then gradually pivoted into the position shown in Fig. 9C.
• the freedom of movement for this is limited, at any rate in the case of the trapezium frame illustrated, and, in the case of this frame, a combined sliding of the housing onto the pivot bearing and subsequent pivoting of the housing about the pivot bearing is required in order to plug contact plug 60 and connector plug 40 into each other, and in order to close the second abutment with hook element 13 and latch catch 55 and in order to build up the clamping force in the pressure elements 48, 49, 50.
• Figures 1 and 2 show a trapezium frame.
• the top tube could also be omitted, or the bicycle frame could be designed, for example, as a diamond frame.
• the shaping of the housing outside the oblique surfaces and lower side which are matched to the contour and shaping of the receiving depression, there is sufficient design freedom and the shaping can also greatly differ from the exemplary embodiment shown.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Motorcycle And Bicycle Frame (AREA)

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Citations (8)

• 2013
  • 2013-07-23 DE DE201320103315 patent/DE202013103315U1/de not_active Expired - Lifetime
• 2014
  • 2014-07-22 WO PCT/IB2014/063315 patent/WO2015011646A1/en active Application Filing

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