Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
  • B62H—CYCLE STANDS; SUPPORTS OR HOLDERS FOR PARKING OR STORING CYCLES; APPLIANCES PREVENTING OR INDICATING UNAUTHORIZED USE OR THEFT OF CYCLES; LOCKS INTEGRAL WITH CYCLES; DEVICES FOR LEARNING TO RIDE CYCLES
  • B62H5/00—Appliances preventing or indicating unauthorised use or theft of cycles; Locks integral with cycles
  • B62H5/006—Appliances preventing or indicating unauthorised use or theft of cycles; Locks integral with cycles acting on the saddle
• • 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
  • B62K19/36—Frame parts shaped to receive other cycle parts or accessories for attaching saddle pillars, e.g. adjustable during ride

Definitions

• the present invention relates to an anti-theft device for a seat post, in particular intended for cycles and similar vehicles such as two-wheeled vehicles connected by a frame.
• the present invention relates to the security of goods, especially outside and in public places, and relates to a seat anti-theft device, by mechanism integrated in the tubes, particularly suitable for a two-wheeled vehicle such as a bicycle. .
• the currently known seat anti-theft devices are relatively easy to put out of service or to be eliminated using a suitable tool, because they are easily accessible:
• the seat anti-theft device is particularly useful when the bicycle is fitted with a seat clamp locking device of the quick-release or quick-attach type.
• the problem posed by the present invention consists in particular in overcoming these drawbacks with a difficult, or even impossible to access, anti-theft device, tamper evident, with a simple and robust mechanism, in order to improve the effectiveness of the protection.
• the installation of the device according to the invention is simple.
• the seat post anti-theft device mainly comprises, on the one hand, a connecting rod connecting a lower anchoring point in the frame tube to a guide and stop means of the connecting rod fixed internally to the seatpost.
• the lower anchor point includes two cooperating expanders between them.
• the connecting rod is threaded at least at its two ends.
• the lower fixing means intended for the frame tube comprising two expanders, the lower expander is provided with a through hole eccentric towards the shortest part of the expander, which axis hole is substantially parallel to the axis of the threaded rod being tapped in order to receive the threaded lower part of the connecting rod, the upper expander being pierced with an oblong through hole, with an axis substantially parallel to the axis of the threaded rod, extending from the shortest part to longest part of the expander;
• the lower fixing means comprising two expanders cooperating between them and housed in the tube of the frame is retained on its upper flat part by an inseparable or self-locking bolt screwed onto the threaded connecting rod.
• the upper guide and stop means intended for the seatpost, consists of two expanders positioned internally at the base of the seatpost, the upper expander being provided with an eccentric through hole towards the most short of the expander, with an axis substantially parallel to the axis of the threaded rod, which hole is tapped in order to receive the hollow screw by which the connecting rod slides, the lower expander being pierced with an oblong hole, opening, with an axis substantially parallel to the axis of the threaded rod and extending from the shortest part to the longest part and from the expander.
• the tapped holes in the expanders allow, in combination with the oblong days of the cooperating expanders, adaptation to all internal diameters of seatpost or frame tube.
• the guide and stop means comprises a hollow screw which is screwed so as to connect the two expanders.
• the hollow screw allows the sliding of the connecting rod through the upper guide and stop means.
• the connecting rod is provided at its upper end with a blind bolt, in order to allow remote screwing of the lower expander from the lower fixing means in the frame tube.
• the seat anti-theft device mainly consists of a rod ensuring the connection between the seat post and the tube of the frame in which it slides.
• the connecting rod is fixed integrally in the frame tube, it can move through a fixed point integral with the seatpost.
• the connecting rod passed through the fixed point of the seat post is provided at its upper end with a blind bolt allowing remote tightening via the connecting rod actuating the spacing of the expanders. Said blind bolt also serves as a stop.
• the seatpost is then adjustable in height but can no longer be separated from the frame tube.
• FIG. 1 shows a vertical sectional view of an anti-theft device by integrated mechanism according to a preferred embodiment of the invention
• FIG. 1 shows a sectional view of the upper expander of the upper guide and stop means of the device according to the invention shown in FIG. 1
• FIG. 2 shows a top view of the expander shown in FIG. 2.
• FIG. 4 shows a bottom view of the expander shown in FIG. 2.
• FIG. 5 shows a sectional view of the lower expander of the means for guiding and stopping the device according to the invention shown in FIG. 1
• - Fig. 6 shows a front view of the expander shown in FIG. 5.
• - Fig. 7 shows a bottom view of the expander shown in FIG. 5.
• FIG. 8 shows a sectional view of the lower expander of the lower fixing means of the device according to the invention shown in FIG. 1
• FIG. 9 shows a front view of the expander shown in FIG. 8.
• FIG. 10 shows a bottom view of the expander shown in FIG. 8.
• - Fig. 11 shows a sectional view of the upper expander of the lower fixing means of the device according to the invention shown in FIG. 1.
• FIG. 11 shows a front view of the expander shown in FIG. 11.
• - Fig. 13 shows a top view of the expander shown in FIG. 11.
• the anti-theft device shown in the figures comprises a threaded rod 1 which provides the connection between the hollow cylindrical seatpost 2 and the hollow tube 3 of the bicycle frame.
• the seat post 2 supports at its upper end the saddle 4 and is fitted by its lower end into the upper part of the tube 3 of the frame.
• the rod 1 is connected by its upper part to an upper guide and stop means 5 housed in the seat post 2.
• the rod 1 is still connected by its lower part to a lower fixing means 6 housed in the tube 3
• the upper guide and stop means 5 comprises two expanders 7, 8.
• the 6 includes two expanders 9, 10 cooperating and sliding between them.
• the expanders 7, 8, 9, 10 are in the form of partially cylindrical shells having a side cut obliquely, so that if the two shells are placed so that the bias faces overlap the means 5 or 6 has the shape of a cylinder.
• the upper expander 7 of the upper guide and stop means 5 is substantially in the form of a truncated cylinder, its flat face 1 1 being turned upwards. Its bias face 12 being open, the flat face 1 1 is crossing a tapped hole 13 eccentric to the shortest part 14 of the expander 7.
• Said hole 13 has an axis substantially parallel to the axes of the threaded rod 1 and of the upper guide and stop means 5.
• the flat face 1 1 also has a stud 15 which is eccentric in opposition to said threaded hole 13.
• Two oblong bosses 16, 16 ′ extend on each side and parallel to the axis passing through the stud 15 and the threaded hole 13.
• L 'lower expander 8 of the upper guide and stop means 5 is also substantially in the form of a truncated cylinder, its flat face 17 being turned downwards. Its open bias face 18 cooperating with the bias face 12 of the upper expander 7.
• the flat face 17 is pierced with an oblong day 19 extending to the level of the inner wall 20 of the lower expander 8 from the shortest part 21 to the longest part 22.
• the lower expander 9 of the lower fixing means 5 is substantially in the form of a truncated cylinder, its flat face 23 being turned downwards. Its bias face 24 being open, the planar face 23 is traversed by a tapped hole 25 eccentric towards the shortest part 26 of the expander 9. Said hole 25 which has an upper chamfer 27 has an axis substantially parallel to the axes of the threaded rod 1 and of the lower fixing means 6.
• the upper expander 10 of the lower fixing means 6 is substantially in the form of a truncated cylinder, its flat face 28 being turned upwards. Its bias face 29 being open, the planar face 28 is crossed by an oblong day 30 extending from the shortest part 31 to the longest part 32.
• the threaded hole 25 receives the lower threaded part of the connecting rod 1, which crosses the oblong day 30 of the expander 10.
• the lower fixing means 6 is placed in the tube of the frame 3 at a distance at least equal to the possibility of sliding of the seat post 2 desired. This distance is little different from the length of the seatpost 2.
• the upper guide and stop means 5 housed in the seatpost 2 is composed of two separate expanders 7, 8, it is unlike the lower fixing means 6, placed independently of the connecting rod 1 in the seatpost saddle 2.
• the rod 1 connects two fixed parts secured respectively to the seat rod 2 and to the tube of the frame 3 using the upper 5 and lower 6 fixing means.
• the upper guide and stop means 5 comprises a hollow screw 34.
• the rod 1 slides through the hollow of the screw 34, the head 35 of which presses on the lower face 17 of the lower expander 8 of the guide means and upper stop 5.
• the lower expander 8 comes to slide on the bias face of the upper expander 7 in a longitudinal and lateral movement until contact with the inner wall of the seat post 2 .
• the assembly of the device according to the invention is carried out in the following manner:
• the tightening of the lower expander of the lower means screwed onto the bottom of the threaded connecting rod is carried out by actuating the blind bolt 37 screwed to the top of the rod threaded 1.
• the upper guide and stop means 5 are placed in the seatpost 2, by actuating the hollow screw. After unscrewing the blind bolt 37, said threaded rod 1 is passed through the bore of the hollow screw of the upper guide and stop means 5 placed in the seat post 2 and from the opening of the upper part of the seat post 2, the sheath and the blind bolt serving as a stopper are replaced .
• the device according to the invention is characterized in that a sheath 36 encloses the upper part of the connecting rod 1, between the means for fixing the seat post and a blind bolt 37 placed at the upper end of the connecting rod 1.
• This sheath 36 also acts as a shock absorber in the event of attempted theft.
• a self-locking bolt 38 screwed on the lower part of the rod 1 presses on the flat face 28 of the expander 10.
• a spring leaf 39 is fixed at one of its ends bordering the upper part of the upper expander 7 of the upper guide and stop means 5 of the seat post.
• the leaf spring has an opening, in particular delimited between two fingers, at its other end.
• This leaf spring 39 solves the problem posed by the two-piece seat posts 2 which prevent access from the top.
• Another advantage is certainly its efficiency since it is installed inside the tubes 2, 3 and therefore not accessible. By fighting more effectively against theft, the major handicap for urban cycling, it contributes to the development of the use of bicycles as a mode of transport.
• the invention is applicable to different types of vehicles, in particular two-wheeled vehicles.
• This device is particularly intended for bicycles equipped with quick coupler for the seat post 2 for which the flight of the saddle 4 with its post 2 is very rapid; that is to say on rental bikes, mountain bikes, mountain bikes where quick adjustment of the seat height is essential. It can constitute a stand-alone sales product, requiring no modification of the seatpost 2 or of the frame tube 3 for its installation.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Motorcycle And Bicycle Frame (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=8865183

Family Applications (1)

Country Status (3)

Families Citing this family (4)

Family Cites Families (3)

• 2001
  • 2001-07-05 FR FR0108966A patent/FR2826923B1/fr not_active Expired - Fee Related
• 2002
  • 2002-07-05 WO PCT/FR2002/002362 patent/WO2003004342A1/fr not_active Application Discontinuation
  • 2002-07-05 EP EP02764945A patent/EP1401700A1/de not_active Withdrawn

Non-Patent Citations (1)

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