Slotted lifting seat tube

Abstract

The utility model discloses a slotted lifting seat tube, which comprises a lifting inner tube and a fixed outer tube, the upper end of the lifting inner tube is used for mounting a saddle, the lower end of the lifting inner tube extends into the fixed outer tube, and the lifting inner tube can axially slide relative to the fixed outer tube; the lifting inner tube is provided with an assembly groove with an opening in the bottom, the seat tube further comprises a cam shaft, the cam shaft is arranged in the assembly groove, and the assembly groove is expanded or reset by rotating the cam shaft, so that the lifting inner tube is in contact with or separated from the fixed outer tube, and the relative position between the lifting inner tube and the fixed outer tube is adjusted.

Description

Technical Field

[0001] The utility model belongs to the technical field of bicycle accessories, in particular to a slotted lifting seat tube. Background Art

[0002] Bicycling is becoming an increasingly popular form of recreation and transportation. Furthermore, it has become a very popular competitive sport for both amateurs and professionals. Whether used for recreation, transportation, or competition, the bicycle industry continues to improve the various components of bicycles. One bicycle component that has undergone extensive redesign is the bicycle seatpost assembly.

[0003] In the existing bicycle seat tube, a locking assembly is provided between the lifting inner tube and the fixed outer tube, and the lifting inner tube and the fixed outer tube are locked by the locking assembly. However, this structure is cumbersome and costly, and cannot meet the needs of cyclists.

[0004] Therefore, how to provide a slotted lifter seat post, how to simplify the locking structure between the lifter inner tube and the fixed outer tube, and how to reduce production costs are technical problems that those skilled in the art urgently need to solve. Utility Model Content

[0005] The main technical problem solved by the utility model is to provide a slotted lifter seat tube, in which a bottom-open assembly groove is provided on a lifter inner tube, a camshaft is arranged in the assembly groove, and the assembly groove is expanded by rotating the camshaft so that the lifter inner tube contacts the fixed outer tube, thereby achieving tension and fixation between the lifter inner tube and the fixed outer tube; the assembly groove is reset by rotating the camshaft so that the lifter inner tube and the fixed outer tube are separated, thereby achieving separation between the lifter inner tube and the fixed outer tube, and further adjusting the relative position between the lifter inner tube and the fixed outer tube.

[0006] In order to solve the above technical problems, the present invention adopts a technical solution: a slotted dropper seat tube, the seat tube comprising:

[0007] A lifting inner tube and a fixed outer tube, wherein the upper end of the lifting inner tube is used to mount a saddle, and the lower end extends into the fixed outer tube, and the lifting inner tube can slide axially relative to the fixed outer tube;

[0008] The lifting inner tube is provided with an assembly groove with an opening at the bottom. The seat tube also includes a camshaft, which is arranged in the assembly groove. The assembly groove is expanded or reset by rotating the camshaft to achieve contact or separation between the lifting inner tube and the fixed outer tube.

[0009] Preferably, the seat tube further comprises an outer sleeve, which is arranged on the upper end of the fixed outer tube, and two mounting holes are provided on opposite sides of the outer sleeve, and the two ends of the camshaft can be assembled in the two mounting holes.

[0010] Preferably, the seat tube further comprises a wrench connected to both ends of the camshaft, and a limiting protrusion is provided on one end of the wrench away from the camshaft and close to the fixed outer tube.

[0011] Preferably, guide protrusions are symmetrically provided on opposite sides of the assembly groove.

[0012] Preferably, a guide groove is provided on the outer periphery of the camshaft, and the guide groove matches the guide protrusion.

[0013] Preferably, the wrench is located outside the outer casing, and the wrench and the camshaft are locked by bolts.

[0014] The beneficial effects of the utility model are as follows:

[0015] The seat tube is provided with an assembly groove with a bottom opening on the lift inner tube, and a camshaft is arranged in the assembly groove. The assembly groove is expanded by rotating the camshaft so that the lift inner tube contacts the fixed outer tube, thereby achieving tension and fixation between the lift inner tube and the fixed outer tube. The assembly groove is reset by rotating the camshaft so that the lift inner tube is separated from the fixed outer tube, thereby achieving separation between the lift inner tube and the fixed outer tube, and then adjusting the relative position between the lift inner tube and the fixed outer tube. The seat tube has a simple structure, is easy to adjust and lift, saves costs, and meets the needs of riders. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A.

[0018] The parts in the accompanying drawings are marked as follows:

[0019] 100, lifting inner tube; 101, assembly groove; 1011, guide protrusion;

[0020] 200, fix the outer tube;

[0021] 300, camshaft; 301, guide groove;

[0022] 400, outer cover; 401, mounting hole;

[0023] 500, wrench; 501, limiting protrusion; 502, bolt. DETAILED DESCRIPTION

[0024] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0025] Example: Refer to Figure 1-Figure 2 As shown, a slotted dropper seat tube comprises:

[0026] A lifting inner tube 100 and a fixed outer tube 200. The upper end of the lifting inner tube 100 is used to install the saddle, and the lower end extends into the fixed outer tube 200. The lifting inner tube 100 can slide axially relative to the fixed outer tube 200;

[0027] The seat tube is provided with a bottom-open assembly groove 101 on the lifting inner tube 100. The camshaft 300 is disposed in the assembly groove 101. By rotating the camshaft 300, the cam vertex of the camshaft 300 is in vertical contact with the side of the assembly groove 101. The camshaft 300 opens the assembly groove 101 to allow the lifting inner tube 100 to contact the fixed outer tube 200, thereby achieving tension and fixation between the lifting inner tube 100 and the fixed outer tube 200.

[0028] By rotating the camshaft 300, the cam apex of the camshaft 300 is located in the middle of the assembly groove 101, and the camshaft 300 resets the assembly groove 101 to separate the lifting inner tube 100 from the fixed outer tube 200, thereby realizing the separation between the lifting inner tube 100 and the fixed outer tube 200, and then adjusting the relative position between the lifting inner tube 100 and the fixed outer tube 200 to complete the lifting adjustment of the lifting inner tube 100.

[0029] Furthermore, the seat tube also includes an outer sleeve 400, which is arranged on the upper end of the fixed outer tube 200. Two mounting holes 401 are provided on opposite sides of the outer sleeve 400. The two ends of the camshaft 300 can be assembled in the two mounting holes 401, and the camshaft 300 can rotate in the mounting holes 401.

[0030] In addition, the seat tube further includes a wrench 500 , which is connected to both ends of the camshaft 300 . A limiting protrusion 501 is provided on one end of the wrench 500 away from the camshaft 300 and close to the fixed outer tube 200 .

[0031] The camshaft 300 is rotated by using a wrench 500 to save rotational effort, and a limiting protrusion 501 is provided on one side of the wrench 500. When the wrench 500 is moved and the limiting protrusion 501 contacts the fixed outer tube 200, the cam vertex of the camshaft 300 contacts vertically with the side of the assembly groove 101. The camshaft 300 opens the assembly groove 101 to allow the lifting inner tube 100 to contact the fixed outer tube 200, thereby achieving tension and fixation between the lifting inner tube 100 and the fixed outer tube 200.

[0032] It should be noted that guide protrusions 1011 are symmetrically provided on opposite sides of the assembly groove 101 .

[0033] A guide groove 301 is provided on the outer periphery of the camshaft 300 , and the guide groove 301 matches the guide protrusion 1011 .

[0034] By rotating the camshaft 300, the cam apex of the camshaft 300 is located in the middle of the assembly groove 101, and the camshaft 300 resets the assembly groove 101 to separate the lifting inner tube 100 from the fixed outer tube 200, thereby realizing the separation between the lifting inner tube 100 and the fixed outer tube 200, and then adjusting the relative position between the lifting inner tube 100 and the fixed outer tube 200. The guide protrusion 1011 of the lifting inner tube 100 can be lifted and lowered along the guide groove 301 of the camshaft 300 to complete the lifting and lowering adjustment of the lifting inner tube 100.

[0035] Finally, the wrench 500 is defined to be located outside the outer sleeve 400 , and the wrench 500 and the camshaft 300 are locked by a bolt 502 , thereby improving the assembly strength between the wrench 500 and the camshaft 300 .

[0036] The working principle of the present invention is as follows:

[0037] Move the wrench 500 upward, and the wrench 500 drives the camshaft 300 to rotate. At this time, the cam apex of the camshaft 300 is located in the middle of the assembly groove 101. The camshaft 300 resets the assembly groove 101 to separate the lifting inner tube 100 from the fixed outer tube 200, thereby achieving the separation between the lifting inner tube 100 and the fixed outer tube 200, and then adjusting the relative position between the lifting inner tube 100 and the fixed outer tube 200 to complete the lifting adjustment of the lifting inner tube 100.

[0038] Move the wrench 500 downward, and the wrench 500 drives the camshaft 300 to rotate. When the limiting protrusion 501 contacts the fixed outer tube 200, the cam vertex of the camshaft 300 contacts the side of the assembly groove 101 vertically. The camshaft 300 opens the assembly groove 101 to allow the lifting inner tube 100 to contact the fixed outer tube 200, thereby achieving tension and fixation between the lifting inner tube 100 and the fixed outer tube 200.

[0039] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate orientations or positional relationships based on the descriptions in the embodiments and shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on the present utility model.

[0040] The above are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A slotted dropper seatpost, the seatpost comprising: A lifting inner tube and a fixed outer tube, wherein the upper end of the lifting inner tube is used to mount a saddle, and the lower end extends into the fixed outer tube, and the lifting inner tube can slide axially relative to the fixed outer tube; characterized in that: The lifting inner tube is provided with an assembly groove with an opening at the bottom. The seat tube also includes a camshaft, which is arranged in the assembly groove. The assembly groove is expanded or reset by rotating the camshaft to achieve contact or separation between the lifting inner tube and the fixed outer tube.

2. The slotted dropper seatpost according to claim 1, wherein: The seat tube also includes a sleeve, which is arranged on the upper end of the fixed outer tube. Two mounting holes are provided on opposite sides of the sleeve, and the two ends of the camshaft can be assembled in the two mounting holes.

3. The slotted dropper seat post according to claim 2, wherein: The seat tube also includes a wrench connected to both ends of the camshaft. A limiting protrusion is provided on one end of the wrench away from the camshaft and close to the fixed outer tube.

4. The slotted dropper seat post according to claim 3, wherein: Guide protrusions are symmetrically arranged on opposite sides of the assembly groove.

5. The slotted dropper seat post according to claim 4, wherein: The outer periphery of the camshaft is provided with a guide groove, and the guide groove matches the guide protrusion.

6. The slotted dropper seat post according to claim 5, characterized in that: Definition: The wrench is located outside the housing and the wrench and camshaft are locked by bolts.

Images