CN203638022U

CN203638022U - Seat post height adjusting device

Info

Publication number: CN203638022U
Application number: CN201320819395.9U
Authority: CN
Inventors: 王通昊宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-12-13
Filing date: 2013-12-13
Publication date: 2014-06-11
Anticipated expiration: 2023-12-13

Abstract

The utility model relates to a seat post height adjusting device. The seat post height adjusting device comprises a bicycle frame, a casing pipe arranged on the bicycle frame and a seat post inserted into the casing pipe in a sliding mode. A nut is fixed to the lower end of the seat post. A bearing is installed in the casing pipe. A rotating shaft is installed in the bearing in a rotating mode. A screw is fixed above the rotating shaft and fixed into the nut in a screwed mode. A worm wheel is fixed to the rotating shaft. A worm is horizontally installed in the casing pipe in a rotating mode through a shaft head I and a shaft head II which are arranged at the two ends of the worm. The worm is meshed with the worm wheel. A handle is fixed to the head end of the shaft head II and located outside the casing pipe. When the height of the seat post needs to be adjusted, the handle is rotated to drive the worm to rotate, the worm rotates and drives the worm wheel to drive the screw to rotate, the screw rotates and makes the nut drive the seat post to slide vertically in the casing pipe, and therefore the height of a seat can be conveniently adjusted. Because the worm wheel and the worm have the self-locking characteristic through meshing, the worm will not rotate any more after the seat post is stressed, and accordingly the height of the seat post can be kept unchanged after being adjusted.

Description

Sit pipe arrangement for adjusting height

Technical field

The utility model relates to technical field of bicycles, is specifically related to a kind of pipe arrangement for adjusting height of sitting.

Background technology

As everyone knows, the seat pipe of bicycle height is adjusted and is generally two kinds of structures, and one is to adopt U-shaped folder to utilize that bolt and nut is fastening steps up seats pipe, but this structure can not adjust at any time and sit pipe height, and it is inconvenient to use.And another kind of mode is stepped up seat pipe for utilizing quick detach to sit pipe clamp, still this structure is along with the growth of the time of riding, and quick detach fixture is easily loosening, and making to sit pipe can highly reduce gradually under the effect of body weight.

Summary of the invention

The utility model is in order to overcome the deficiency of above technology, provides a kind of and kept highly constant seat pipe arrangement for adjusting height after regulating height.

The utility model overcomes the technical scheme that its technical matters adopts:

This seat pipe arrangement for adjusting height, the pipe box and the slip that comprise vehicle frame, be arranged on vehicle frame are plugged in the seat pipe in pipe box, described seat pipe lower end is fixed with nut, described pipe box inside is provided with bearing, one rotating shaft is rotated and is installed in bearing, described rotating shaft top is fixed with screw rod, described screw rod screws and is fixed in nut, worm gear is fixed in rotating shaft, worm screw horizontally rotates and is installed in pipe box by being arranged at the spindle nose I at its two ends and spindle nose II, described worm and wheel is meshed, and handle is fixed on the head end of spindle nose II and its and is positioned at the outside of pipe box.

Misroute in order to prevent handle, the outer end of above-mentioned spindle nose II is fixed with the castellated shaft coaxial with it, in described handle, be provided with splined hole, described handle is loaded on castellated shaft by splined hole slip cap, the head end of described spindle nose II and the outside that is positioned at handle are provided with baffle plate, on the outer wall of described pipe box, be fixed with two fixture blocks, the distance between described two fixture blocks and the external diameter of handle match.

For better guiding, the outside face of above-mentioned seat pipe is along the circumferential direction provided with some projections, is along the circumferential direction provided with some grooves that match with projection on described pipe box inwall, and described seat pipe is slided and is plugged in the groove in pipe box by projection.

In order to prevent that nut from coming off, on the inwall of above-mentioned pipe box, be fixed with block, the lower plane of described block is higher than the baseplane of screw rod.

The beneficial effects of the utility model are: need to adjust while sitting pipe height, drive worm screw to rotate by swing handle, worm screw rotating drive worm gear drives bolt rotary, bolt rotary makes nut drive seat pipe to slide up and down in pipe box, thereby the convenient height of adjusting seat, because the engagement of worm and gear has latching characteristics, therefore can not rotate again the stressed rear worm screw of seat pipe, therefore ensure can keep after seat pipe adjustment height.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model;

Fig. 2 is that A-A in Fig. 1 is to cross-sectional view;

Fig. 3 is that B-B in Fig. 1 is to cross-sectional view;

Fig. 4 is handle fixed position structural representation;

In figure, 1. vehicle frame 2. pipe boxes 3. are sat pipe 4. nut 5. screw rod 6. rotating shaft 7. worm gear 8. bearing 9. worm screw 10. block 11. projection 12. spindle nose I 13. spindle nose II 14. fixture block 15. castellated shaft 16. handle 17. baffle plates.

Detailed description of the invention

Below in conjunction with accompanying drawing 1 to accompanying drawing 4, the utility model is described further.

This seat pipe arrangement for adjusting height, comprise vehicle frame 1, be arranged at the pipe box 2 on vehicle frame 1 and slide and be plugged in the seat pipe 3 in pipe box 2, sit pipe 3 lower ends and be fixed with nut 4, pipe box 2 inside are provided with bearing 8, one rotating shaft 6 is rotated and is installed in bearing 8, rotating shaft 6 tops are fixed with screw rod 5, screw rod 5 screws and is fixed in nut 4, worm gear 7 is fixed in rotating shaft 6, worm screw 9 horizontally rotates and is installed in pipe box 2 by being arranged at the spindle nose I 12 at its two ends and spindle nose II 13, described worm screw 9 is meshed with worm gear 7, handle 16 is fixed on the head end of spindle nose II 13 and its and is positioned at the outside of pipe box 2.Need to adjust while sitting pipe 3 height, drive worm screw 9 to rotate by swing handle 16, worm screw 9 rotating drive worm gears 7 drive screw rod 5 to rotate, screw rod 5 rotates and makes nut 4 drive seat pipe 3 to slide up and down in pipe box 2, thereby the convenient height of adjusting seat, because the engagement of worm gear 7 worm screws 9 has latching characteristics, therefore can not rotate again seat pipe 3 stressed rear worm screws 9, therefore ensure can keep after seat pipe 3 adjustment height.

The outer end of above-mentioned spindle nose II 13 is fixed with the castellated shaft coaxial with it 15, in handle 16, be provided with splined hole, handle 16 is loaded on castellated shaft 15 by splined hole slip cap, the head end of spindle nose II 13 and the outside that is positioned at handle 16 are provided with baffle plate 17, on the outer wall of pipe box 2, being fixed with distance between 14, two fixture blocks 14 of two fixture blocks and the external diameter of handle 16 matches.In the time that pipe 3 height is sat in needs adjustment, handle 16 is pulled out along castellated shaft 15, swing handle 16 afterwards, after adjusting, handle 16 is inwardly pushed away along castellated shaft 15, and handle 16 is placed between two fixture blocks 14, prevent that handle 16 handle 16 in the time that Vehicle Driving Cycle jolts from misrouting the moving Level Change that causes sitting pipe 3.

As shown in Figure 2, the outside face of sitting pipe 3 is along the circumferential direction provided with some projections 11, is along the circumferential direction provided with some grooves that match with projection 11 on pipe box 2 inwalls, sits pipe 3 and is slided and be plugged in the groove in pipe box 2 by projection 11.By coordinating of projection 11 and groove, can improve the guidance quality when sitting pipe 3 and moving up and down, prevent from sitting pipe 3 in the interior rotation of sleeve pipe 2, cause the situation of seat deflection to occur.

On the inwall of pipe box 2, be fixed with block 10, the lower plane of block 10 is higher than the baseplane of screw rod 5.Block 10 can prevent from when nut 4 from moving down along screw rod 5 departing from from screw rod 5, has improved the reliability using.

Claims

1. sit pipe arrangement for adjusting height for one kind, comprise vehicle frame (1), be arranged at the pipe box (2) on vehicle frame (1) and slide and be plugged in the seat pipe (3) in pipe box (2), it is characterized in that: described seat pipe (3) lower end is fixed with nut (4), described pipe box (2) inside is provided with bearing (8), one rotating shaft (6) is rotated and is installed in bearing (8), described rotating shaft (6) top is fixed with screw rod (5), described screw rod (5) screws and is fixed in nut (4), worm gear (7) is fixed in rotating shaft (6), worm screw (9) horizontally rotates and is installed in pipe box (2) by being arranged at the spindle nose I (12) at its two ends and spindle nose II (13), described worm screw (9) is meshed with worm gear (7), handle (16) is fixed on the head end of spindle nose II (13) and its and is positioned at the outside of pipe box (2).

2. seat pipe arrangement for adjusting height according to claim 1, it is characterized in that: the outer end of described spindle nose II (13) is fixed with the castellated shaft coaxial with it (15), described handle is provided with splined hole in (16), described handle (16) is loaded on castellated shaft (15) by splined hole slip cap, the head end of described spindle nose II (13) and the outside that is positioned at handle (16) are provided with baffle plate (17), on the outer wall of described pipe box (2), be fixed with two fixture blocks (14), the external diameter of the distance between described two fixture blocks (14) and handle (16) matches.

3. seat pipe arrangement for adjusting height according to claim 1 and 2, it is characterized in that: the outside face of described seat pipe (3) is along the circumferential direction provided with some projections (11), on described pipe box (2) inwall, be along the circumferential direction provided with some grooves that match with projection (11), described seat pipe (3) is slided and is plugged in the groove in pipe box (2) by projection (11).

4. seat pipe arrangement for adjusting height according to claim 3, is characterized in that: on the inwall of described pipe box (2), be fixed with block (10), the lower plane of described block (10) is higher than the baseplane of screw rod (5).