TWM483909U - Shock absorbing seat tube of bicycle - Google Patents

Description

Bicycle shock absorber seat tube

This creation is related to bicycles, especially a bicycle suspension seat tube.

In order to increase the comfort of the rider during the ride, the most common way is to configure a set of suspension structures in the seat tube, so as to reduce the force transmitted to the seat cushion caused by the vibration caused by the road bumps. As for the conventional technology, the shock absorber seat tube disclosed in the Patent No. M393463 of the Republic of China mainly comprises a tube, the bottom end of the seat tube is provided with a fixing member, and the top end of the seat tube is provided with a cover member. The seat tube is provided with a buffering member and a sleeve which are mutually pressed, and the sleeve is pierced by the bottom end of a shaft, and the top end of the shaft passes through the cover member for assembly of a mat, thereby completing the assembly. The seat cushion can then be shock-absorbing.

However, in the aforementioned conventional patent case, the casing must be considered in the order of the other components before assembly, otherwise there may be cases where it cannot be installed in place, so that users who are unfamiliar with the structure are bound to cause considerable troubles. Inconvenience, the aforementioned patent application has the need for improvement.

The main purpose of this creation is to provide a bicycle suspension seat tube that simplifies the assembly process.

In order to achieve the foregoing objectives, the shock absorber seat tube of the present invention comprises an outer tube, a rod, a buffer assembly, and a liner. The seatpost can be axially positioned The outer peripheral wall of the seat rod has two opposite first control planes; the buffer assembly has an upper fixing seat, a lower fixing seat, and a buffering member, the upper fixing seat Fixed at a bottom end of the seat post, the lower fixing seat is fixed to a bottom end of the outer tube, the buffering member is disposed between the upper and lower fixing seats for providing a buffering effect; the liner is disposed on the outer tube Between the seat post and the two semi-arc sleeves, the inner peripheral wall of each of the semi-arc sleeves has a second limiting plane, and the second limiting plane abuts against the first limit of the seat post The plane is such that the liner can move axially with the seatpost without rotating relative to the seatpost.

By the arrangement of the two semi-arc sleeves of the liner, the shock absorber seat tube of the present invention does not need to specially consider the sequence between the other components when assembling the liner, thereby reducing the user's assembly. Troubled to achieve the purpose of this creation.

10‧‧‧Suiting seat tube

20‧‧‧External management

22‧‧‧ body

221‧‧ Thread Department

24‧‧‧End cover

242‧‧‧Inline slot

26‧‧‧ dust ring

262‧‧‧Outer flange

30‧‧‧ seatpost

40‧‧‧buffer components

41‧‧‧上固定座

42‧‧‧ lower seat

422‧‧‧Upper slot

43‧‧‧ cushioning parts

44‧‧‧ Shock Absorption Ring

45‧‧‧shims

46‧‧‧Bolts

47‧‧‧ seat

472‧‧‧Bump

474‧‧‧ under the receiving slot

48‧‧‧Compression spring

50‧‧‧ liner

52‧‧‧ semi-arc sleeve

54‧‧‧Second limit plane

56‧‧‧First Positioning Department

562‧‧‧Upper groove

564‧‧‧ Lower bumps

58‧‧‧Second Positioning Department

582‧‧‧Upper bump

584‧‧‧ under the groove

Fig. 1 is a perspective view showing a first embodiment of the creation.

Fig. 2 is an exploded perspective view showing the first embodiment of the creation.

Fig. 3 is a sectional view showing the combination of the first embodiment of the present invention.

Fig. 4 is a partial enlarged view of Fig. 3.

Fig. 5 is a perspective view of the bushing of the first embodiment of the present invention.

Fig. 6 is a perspective view of the liner of the second embodiment of the present invention.

Referring to Figures 1 and 2, the shock absorber seat tube 10 of the present invention includes an outer tube 20, a rod 30, a cushioning assembly 40, and a liner 50.

The outer tube 20 has a tubular body 22, an end cap 24, and a dustproof Ring 26. The top end of the tubular body 22 has a threaded portion 221, and the end cap 24 is screwed to the threaded portion 221 of the tubular body 22 and has an inner fitting groove 242. The dustproof ring 26 has an outer flange 262, and the outer flange 262 abuts the tube. The top end of the body 22 is embedded in the inner recess 242 of the end cap 24.

The top end of the seat post 30 is fixed by a pad (not shown). The bottom end of the seat post 30 passes through the dust ring 26 of the outer tube 20 and extends into the body 22 of the outer tube 20, and can be along its own axis. The upper outer tube 20 is displaced up and down. In addition, the seat post 30 has two opposing first limit planes 32.

As shown in FIGS. 3 and 4, the cushioning assembly 40 is mounted in the tubular body 22 of the outer tube 20 and has an upper mount 41, a lower mount 42, and a cushioning member 43. The upper fixing base 41 has a shock absorbing ring 44 and a spacer 45. The shock absorbing ring 44 is sleeved on the bottom end of the seat post 30. The spacer 45 abuts against the bottom surface of the shock absorbing ring 44 and is fixed to the seat post 30 by a bolt 46. The lower fixing seat 42 is fixed to the bottom end of the tubular body 22 of the outer tube 20, and the top cover of the lower fixing base 42 has an upper receiving groove 422; the buffering member 43 has a bearing 47 and a compression spring 48. And an elastic body 49, the bearing seat 47 is between the upper and lower fixing seats 41, 42, and the top cover of the bearing seat 47 has a protruding post 472, the bottom surface of the bearing seat 47 has a lower receiving groove 474, a compression spring The top end of the 48 abuts against the gasket 45 of the upper fixing seat 41. The bottom end of the compression spring 48 is sleeved on the boss 472 of the socket 47 and abuts against the top surface of the socket 47, and the elastic body 49 is excellent. For example, the rubber is installed between the receiving groove 474 and the receiving groove 422 above the lower fixing seat 42. Thereby, the cushioning assembly 40 can provide a double cushioning effect on the seat post 30 by the compression spring 48 and the elastic body 49.

As shown in Figure 5, the liner 50 has two opposite semi-arc sleeves The inner peripheral wall of each of the semi-arc sleeves 52 has a second limiting plane 54. In this embodiment, one of the two sides of the semi-arc sleeve 52 has a first positioning portion 56, and the first positioning portion 56 is formed by an upper bump 562 and a lower recess 564. The other side of the semi-arc sleeve 52 has a second positioning portion 58. The second positioning portion 58 is formed by an upper recess 582. The bump 584 is formed. At the time of assembly, as shown in FIGS. 2 to 4, the liner 50 is fixed to the tube of the outer tube 20 by the engagement between the first and second positioning portions 56, 58 of the two semi-arc sleeves 52. Between the body 22 and the seat post 30, after the assembly is completed, the second limiting plane 54 of each semi-arc sleeve 52 abuts against the first limiting plane 32 of the seat post 30, and each semi-arc sleeve 52 The top end abuts against the bottom surface of the dustproof ring 26 of the outer tube 20, and the bottom end of each of the semi-arc sleeves 52 abuts against the top surface of the shock absorbing ring 44 of the upper fixing base 41. Thereby, the liner 50 can move axially with respect to the outer tube 20 without the seatpost 30 rotating relative to the seatpost 30.

However, the structure of the liner may vary. Please refer to Fig. 6 for the liner 60 provided in the second embodiment of the present invention. The liner 60 of this embodiment is different from the liner 50 of the above embodiment. The one side of the two semi-arc sleeves 62 of the liner 60 are connected to each other, and the other side of the two semi-arc sleeves 62 of the liner 60 is also by the first positioning portion 64 ( That is, the assembly between the upper bump 642 and the lower recess 644) and the second positioning portion 66 (ie, the upper recess 662 and the lower bump 664) is completed.

In summary, the suspension seat tube 10 of the present invention is configured by the two-piece configuration of the liners 50, 60, so that the front and rear sequence with other members need not be specially considered when assembling the liners 50, 60, that is, It can reduce the troubles of the users who are unfamiliar with the structure in order to achieve the purpose of this creation.

20‧‧‧External management

22‧‧‧ body

221‧‧ Thread Department

24‧‧‧End cover

242‧‧‧Inline slot

26‧‧‧ dust ring

262‧‧‧Outer flange

30‧‧‧ seatpost

40‧‧‧buffer components

41‧‧‧上固定座

42‧‧‧ lower seat

422‧‧‧Upper slot

44‧‧‧ Shock Absorption Ring

45‧‧‧shims

46‧‧‧Bolts

47‧‧‧ seat

472‧‧‧Bump

48‧‧‧Compression spring

50‧‧‧ liner

52‧‧‧ semi-arc sleeve

Claims (6)

A bicycle suspension seat tube includes: an outer tube; a rod axially displaceably disposed at a top end of the outer tube, the outer peripheral wall of the seat rod having two opposite first control planes; a buffer assembly The utility model has an upper fixing seat, a lower fixing seat and a buffering member, wherein the upper fixing seat is fixed to the bottom end of the seat post, the lower fixing seat is fixed to the bottom end of the outer tube, and the buffering member is disposed thereon, And a liner disposed between the outer tube and the seat post and having two opposite semi-arc sleeves, wherein the inner peripheral wall of each of the semi-arc sleeves has a second limit rotation plane, The second limit rotation plane is attached to the first limit rotation plane of the seat post. The bicycle suspension seat tube of claim 1, wherein one of the two semi-arc sleeves of the liner has a first positioning portion, and the other semi-arc sleeve of the liner Each of the two sides has a second positioning portion, and the first and second positioning portions are detachably coupled together. The bicycle suspension seat tube according to claim 1, wherein one side of the two semi-arc sleeves of the liner is connected to each other, and the other side of the two semi-arc sleeves of the liner has one The first positioning portion and the second positioning portion are detachably coupled together. The bicycle suspension seat tube of claim 1, wherein the outer tube has a tube body, an end cap, and a dustproof ring, the top end of the tube body has a threaded portion, and the end cap is screwed to the tube body. The threaded portion has an inner groove, the dust ring abuts against the top end of the liner and has an outer flange, the outer flange abuts a groove embedded in the top end of the tube body and embedded in the end cover; the bottom end of the seat rod extends through the dust ring of the outer tube and protrudes into the tube body of the outer tube, the buffer assembly and the liner It is placed in the body of the outer tube. The shock absorber seat tube of the bicycle of claim 1, wherein the upper mount has a shock absorbing ring and a gasket, and the shock absorbing ring is sleeved on the bottom end of the seat post and abuts against the two semi-arc sleeves. At the bottom end, the gasket abuts against the bottom surface of the shock absorbing ring and is fixed to the bottom end of the seat post by a bolt. The bicycle suspension seat tube according to claim 1, wherein the cushioning member has a socket, a compression spring, and an elastic body, the socket is interposed between the upper and lower fixing seats, and the compression spring is abutted Connected between the upper fixing seat and the socket, the elastic body abuts between the socket and the lower fixing seat.