Lifting seat pipe with bush for height adjustment

Abstract

The utility model provides a kind of lifting seat pipe for adjusting height by bushing, it includes: lower pipe, it is equipped with multiple longitudinal extension's sliding slot in;Upper pipe, it is equipped with multiple limit post outside, limit post can be slidably located in the sliding slot of lower pipe;Cap, it is sleeved in upper pipe outside and can be detachably screwed in the top of lower pipe;First bushing, it is annular and first bushing can be detachably sleeved in upper pipe outside;Second bushing, it is annular and second bushing can be detachably sleeved in upper pipe outside, the height of second bushing is different from the height of first bushing;And third bushing, it is annular and third bushing can be detachably sleeved in upper pipe outside, the height of third bushing is different from the height of second bushing, by multiple collocation mode of different height, user can adjust to be suitable for oneself height.

Description

Technical Field

[0001] This utility model relates to the field of bicycle dropper seat tubes, and in particular to a dropper seat tube that uses a bushing to adjust the height. Background Technology

[0002] Cycling enthusiasts usually own several bicycles they like, and they will adjust the bicycles according to their height or leg length, or choose a frame that fits their size.

[0003] There is a type of bicycle seat post on the market today that can extend or shorten in length, but it has a major problem in use: it cannot remember the user's preferred riding height.

[0004] Therefore, how to solve the problem that the retractable bicycle seatposts on the market today cannot remember the user's preferred riding height is undoubtedly a problem that needs to be overcome and improved. Utility Model Content

[0005] To address the aforementioned issues, this utility model provides a height-adjustable seat post that utilizes bushings. By employing various combinations of first, second, and third bushings with different heights, the user can adjust the height-adjustable seat post to their preferred extreme height.

[0006] In some embodiments of this utility model, a height-adjustable lifting seat tube using bushings is provided, comprising: a lower tube, which is hollow and has multiple longitudinally extending grooves inside; an upper tube, which has multiple limiting posts on its exterior, the limiting posts being slidably located in the grooves of the lower tube, so that the upper tube can only slide longitudinally relative to the lower tube and cannot rotate relative to it; a cap, which is sleeved on the upper tube and detachably screwed to the top of the lower tube; a first bushing, which is annular and detachably sleeved on the upper tube; a second bushing, which is annular and detachably sleeved on the upper tube, the height of the second bushing being different from the height of the first bushing; and a third bushing, which is annular and detachably sleeved on the upper tube, the height of the third bushing being different from the height of the second bushing.

[0007] In some embodiments of this utility model, the top edges of the second bushing and the third bushing are respectively provided with recesses, and the bottom edges of the second bushing and the third bushing are respectively provided with protrusions.

[0008] In some embodiments of this utility model, the inner edges of the second bushing and the third bushing are rotatable relative to the outer edge of the upper tube. The outer edges of the second bushing and the third bushing are respectively provided with a plurality of protrusions. The protrusions of the second bushing and the third bushing can correspond to the sliding groove, so that the second bushing and the third bushing can only slide longitudinally relative to the lower tube and cannot rotate relative to each other.

[0009] In some embodiments of this utility model, the recess of the second bushing corresponds to the convex strip of the second bushing, the convex part of the second bushing corresponds to the convex strip of the second bushing, the recess of the third bushing corresponds to the convex strip of the third bushing, and the convex part of the third bushing corresponds to the convex strip of the third bushing.

[0010] In some embodiments of this utility model, the first bushing has a first oblique cut, the second bushing has a second oblique cut, and the third bushing has a third oblique cut.

[0011] In some embodiments of this utility model, the top edge of the first bushing faces the cap, the top edge of the second bushing faces the bottom edge of the first bushing, the top edge of the third bushing faces the bottom edge of the second bushing, and an O-ring is provided between the top edge of the second bushing and the bottom edge of the first bushing, which is fitted outside the upper tube. The height of the O-ring is different from the height of the second bushing.

[0012] In some embodiments of this utility model, a ring piece is provided between the top edge of the second bushing and the bottom edge of the O-ring, which is sleeved on the outside of the upper tube. The height of the ring piece is different from the height of the second bushing, and the ring piece is in the shape of a complete circle.

[0013] In some embodiments of this utility model, the height of the third bushing is different from the height of the first bushing, the height of the O-ring is different from the height of the first bushing or the height of the third bushing, and the height of the ring plate is different from the height of the first bushing, the height of the third bushing or the height of the O-ring.

[0014] In some embodiments of this utility model, the upper tube is provided with a telescopic mechanism connected to the lower tube, which enables the upper tube to extend automatically relative to the lower tube.

[0015] The beneficial effect of this utility model is that the height adjustment seat tube using bushings has a variety of different height combinations, allowing users to adjust the height adjustment seat tube to their own limit according to their height or leg length needs, making it quite simple and convenient to use. Attached Figure Description

[0016] Figure 1 This is a three-dimensional appearance schematic diagram of the lifting seat tube according to some embodiments of the present utility model.

[0017] Figure 2 This is a three-dimensional exploded view of the lifting seat tube according to some embodiments of the present utility model.

[0018] Figure 3 It is along Figure 1 A magnified schematic diagram of a partial cross-section taken along line AA.

[0019] Figure 4This is a schematic diagram of the limit height of the lifting seat tube according to some embodiments of the present utility model, showing that the top of the limiting column contacts the bottom edge of the third bushing.

[0020] Figure 5 This is a schematic diagram of the bushing of the lifting seat tube being removed from the lower tube according to some embodiments of the present utility model.

[0021] The correspondence between the reference numerals and component names is as follows: 100. Lifting seat tube; 10. Lower tube; 11. Slide groove; 20. Upper tube; 21. Telescopic mechanism; 22. Limiting post; 30. Cap; 40. First bushing; 41. First oblique cut; 50. Second bushing; 51. Second oblique cut; 52. Raised strip; 53. Recess; 54. Raised part; 60. Third bushing; 61. Third oblique cut; 62. Raised strip; 63. Recess; 64. Raised part; 70. O-ring; 80. Ring plate. Detailed Implementation

[0022] The exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. It is not intended to limit the technical principles of the present invention to the specific disclosed embodiments, but rather the scope of the present invention is limited only by the scope of the claims, covering substitutions, modifications, and equivalents. Furthermore, for the purpose of understanding and reading by those skilled in the art, the structural dimensions and sizes of the components presented in the drawings are shown in a schematic manner and are not intended to limit the implementation conditions of the present invention.

[0023] Please see Figures 1 to 5 As shown, this utility model provides a height-adjustable seat post 100 using bushings, which includes a lower tube 10, an upper tube 20, a cap 30, a first bushing 40, a second bushing 50, and a third bushing 60. The height-adjustable seat post 100 of this utility model allows users to adjust it to their preferred maximum height through various combinations of the first bushing 40, the second bushing 50, and the third bushing 60 with different heights.

[0024] Please refer to Figures 1 to 3 The lower tube 10 is a hollow tube that can be installed on the stem of a bicycle frame (not shown in the figure). The lower tube 10 has multiple longitudinally extending grooves 11 inside.

[0025] The upper tube 20 is slidably disposed within the lower tube 10. The upper tube 20 is equipped with a telescopic mechanism 21 connected to the lower tube 10, which allows the upper tube 20 to automatically extend relative to the lower tube 10. The telescopic mechanism 21 can be, for example, a pneumatic cylinder, a hydraulic cylinder, or a compression spring. Multiple limiting posts 22 are provided on the outside of the upper tube 20. These limiting posts 22 are slidably located in the grooves 11 of the lower tube 10, ensuring that the upper tube 20 can only slide longitudinally relative to the lower tube 10 and cannot rotate relative to it.

[0026] The cap 30 is fitted over the upper tube 20 and is detachably screwed to the top of the lower tube 10, so that the upper tube 20 will not detach from the lower tube 10.

[0027] The first bushing 40 is annular and has a first oblique cut 41. The first bushing 40 is detachably fitted onto the outside of the upper tube 20. The top edge of the first bushing 40 faces the cap 30.

[0028] Please refer to Figures 1 to 5 The second bushing 50 is annular and has a second oblique cut 51. The second bushing 50 is detachably fitted onto the upper tube 20. The height of the second bushing 50 is different from the height of the first bushing 40. The top edge of the second bushing 50 faces the bottom edge of the first bushing 40. The inner edge of the second bushing 50 can rotate relative to the outer edge of the upper tube 20. The outer edge of the second bushing 50 has multiple protrusions 52, which correspond to the grooves 11 of the lower tube 10, allowing the second bushing 50 to slide longitudinally relative to the lower tube 10 but not rotate relative to it. The top edge of the second bushing 50 has a recess 53, which corresponds to the protrusions 52. The bottom edge of the second bushing 50 has a protrusion 54, which corresponds to the protrusions 52.

[0029] The third bushing 60 is annular and has a third oblique cut 61. The third bushing 60 is detachably fitted onto the upper tube 20. The height of the third bushing 60 is different from that of the second bushing 50. The top edge of the third bushing 60 faces the bottom edge of the second bushing 50. The inner edge of the third bushing 60 can rotate relative to the outer edge of the upper tube 20. The outer edge of the third bushing 60 has multiple protrusions 62, which correspond to the grooves 11 of the lower tube 10, allowing the third bushing 60 to slide longitudinally relative to the lower tube 10 but not rotate relative to it. The top edge of the third bushing 60 has a recess 63, which corresponds to the protrusions 62. The bottom edge of the third bushing 60 has a protrusion 64, which corresponds to the protrusions 62. When the top edge of the third bushing 60 contacts the bottom edge of the second bushing 50, the recess 63 of the third bushing 60 can correspond to the protrusion 54 of the second bushing 50, so that the third bushing 60 will not rotate relative to the second bushing 50. In some embodiments, the height of the third bushing 60 is different from the height of the first bushing 40.

[0030] Please refer to Figures 1 to 3An O-ring 70 is provided between the top edge of the second bushing 50 and the bottom edge of the first bushing 40, and is fitted over the upper tube 20. The height of the O-ring 70 is different from the height of the second bushing 50. In addition to providing a flexible cushioning effect when the upper tube 20 extends, the O-ring 70 can also adjust the limit height of the upper tube 20 when it extends. In some embodiments, the height of the O-ring 70 is different from the height of the first bushing 40 and also different from the height of the third bushing 60.

[0031] A ring plate 80 is provided between the top edge of the second bushing 50 and the bottom edge of the O-ring 70, and is fitted onto the upper tube 20. The height of the ring plate 80 is different from the height of the second bushing 50. The ring plate 80 is in the shape of a complete ring (without cuts) and can adjust the limit height of the upper tube 20 when it is extended. In some embodiments, the height of the ring plate 80 is different from the height of the first bushing 40, the third bushing 60, and the O-ring 70.

[0032] Please refer to Figure 3 and Figure 4 When the telescopic mechanism 21 causes the upper tube 20 to extend automatically relative to the lower tube 10, the top of the limiting post 22 of the upper tube 20 can contact the bottom edge of the third bushing 60, preventing the upper tube 20 from extending relative to the lower tube 10. This achieves the effect of controlling the limit length of the upper tube 20 extension, and thus controlling the limit height of the lifting seat tube 100.

[0033] Please refer to Figure 5 Users can adjust the height adjustment seat tube 100 to their own limit according to their height or leg length. It is very simple and convenient to use. When operating, first loosen the cap 30 from the lower tube 10, and then remove the third bushing 60, the second bushing 50 and the first bushing 40 from the lower tube 10. This allows for easy and quick disassembly. Then, adjust the height according to your own preference.

[0034] For example, a user can remove the third bushing 60 from the upper tube 20, retaining only the second bushing 50 and the first bushing 40, and then assemble the upper tube 20 and the cap 30 onto the lower tube 10 to obtain a different maximum height. Alternatively, in some embodiments, the user can remove the second bushing 50, retaining only the third bushing 60 and the first bushing 40, to obtain yet another different maximum height. Or, in some other embodiments, the user can remove the third bushing 60 and the second bushing 50, retaining only the first bushing 40, to obtain yet another different maximum height. Through the aforementioned various configuration methods, the user can adjust the lifting seat tube 100 of this utility model to a suitable maximum height.

[0035] The embodiments described herein are for illustrative purposes only. Those skilled in the art should understand that the various features, components, or steps of this invention are not mutually exclusive, but can be combined, modified, or replaced in various ways as needed without departing from the spirit and scope of this invention. In particular, unless otherwise expressly stated, one or more features in any embodiment can be freely combined with features in other embodiments to produce new embodiments. All such implementations derived from feature combinations or modifications should be considered within the scope of this invention and should not be regarded as limiting the scope of this invention.

Claims

1. A height-adjusting seat tube using a bushing, characterized in that, The height-adjusting seat tube using bushings includes: The lower tube is hollow and has multiple longitudinally extending grooves inside. The upper tube is provided with multiple limiting posts on its outside. The limiting posts are slidably located in the sliding groove, so that the upper tube can only slide longitudinally relative to the lower tube and cannot rotate relative to it. A cap, which is fitted over the upper tube and detachably screwed to the top of the lower tube; The first bushing is annular and detachably fitted onto the outside of the upper tube; A second bushing, which is annular and detachably fitted onto the outside of the upper tube, has a different height than the first bushing; and The third bushing is annular and detachably fitted onto the outside of the upper tube, and the height of the third bushing is different from the height of the second bushing.

2. The height-adjusting seat tube using a bushing as described in claim 1, characterized in that, The top edges of the second bushing and the third bushing are respectively provided with recesses, and the bottom edges of the second bushing and the third bushing are respectively provided with protrusions.

3. The height-adjusting seat tube using a bushing as described in claim 2, characterized in that, The inner edges of the second bushing and the third bushing are rotatable relative to the outer edge of the upper tube. The outer edges of the second bushing and the third bushing are respectively provided with a plurality of protrusions. The protrusions of the second bushing and the third bushing can correspond to the sliding groove, so that the second bushing and the third bushing can only slide longitudinally relative to the lower tube and cannot rotate relative to it.

4. The height-adjusting seat tube using a bushing as described in claim 3, characterized in that, The recess of the second bushing corresponds to the convex strip of the second bushing, the convex portion of the second bushing corresponds to the convex strip of the second bushing, the recess of the third bushing corresponds to the convex strip of the third bushing, and the convex portion of the third bushing corresponds to the convex strip of the third bushing.

5. The height-adjusting seat tube using a bushing as described in claim 4, characterized in that, The first bushing has a first oblique cut, the second bushing has a second oblique cut, and the third bushing has a third oblique cut.

6. The height-adjusting seat tube using a bushing as described in claim 1, characterized in that, The top edge of the first bushing faces the cap, the top edge of the second bushing faces the bottom edge of the first bushing, and the top edge of the third bushing faces the bottom edge of the second bushing. An O-ring is provided between the top edge of the second bushing and the bottom edge of the first bushing and is fitted onto the outside of the upper tube. The height of the O-ring is different from the height of the second bushing.

7. The height-adjusting seat tube using a bushing as described in claim 6, characterized in that, A ring plate is provided between the top edge of the second bushing and the bottom edge of the O-ring, and is fitted onto the outside of the upper tube. The height of the ring plate is different from the height of the second bushing, and the ring plate is in the shape of a complete circle.

8. The height-adjusting seat tube using a bushing as described in claim 7, characterized in that, The height of the third bushing is different from the height of the first bushing, the height of the O-ring is different from the height of the first bushing or the height of the third bushing, and the height of the ring plate is different from the height of the first bushing, the height of the third bushing or the height of the O-ring.

9. The height-adjusting seat tube using a bushing as described in claim 8, characterized in that, The upper tube is equipped with a telescopic mechanism connected to the lower tube, which enables the upper tube to extend automatically relative to the lower tube.

Images