Hidden cylinder shaft of bicycle

Abstract

The utility model discloses a bicycle hidden type barrel shaft which comprises a barrel shaft body, a sealing piece is arranged at one end of the barrel shaft body, a threaded column is arranged on the outer wall of the sealing piece, the threaded column and the inner wall of the barrel shaft body are installed in a threaded mode, through holes are formed in the middle of the sealing piece and the middle of the threaded column, and movable rods are arranged in the through holes in a sliding mode. A notch is formed in one end of the movable rod, a handle is rotationally arranged in the notch, one end of the handle penetrates through the through hole and is provided with a limiting block, a fixing ring is arranged on the outer wall of the sealing piece, locking holes are formed in the fixing ring and the limiting block, and locking pins are arranged in the locking holes. And therefore, a user can hide the movable rod in the through hole, enable the limiting block to be in contact with the outer wall of the sealing piece, then insert the locking pin into the locking hole, and rotate the fastening ring to block the locking pin and prevent the locking pin from falling off, so that the movable rod is fixedly mounted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle cylinder axle technical field more specifically, it relates to a bicycle hidden cylinder axle. BACKGROUND

[0002] The bicycle cylinder axle (also known as the middle axle or base axle) is an important component of the bicycle, which connects the crank and pedal of the bicycle, supports the rotation of the crank, and transmits the power of the pedal to the rear wheel. The performance of the cylinder axle directly affects the comfort and efficiency of riding, and most of the cylinder axles are made of aluminum alloy or steel materials, which have good strength and hardness to ensure the stability and safety of the frame.

[0003] In the public number as CN215155265U a handle rotatable adjustment formula bicycle cylinder axle rod device, the one end of the axle core is provided with a threaded hole, the threaded hole is connected with the one end of the toothed screw in the threaded hole, the other end of the toothed screw can be combined with the handle, the handle is provided with a spring seat, the spring seat is provided with a spring on the step column, one end of the spring abuts against the spring seat, the other end abuts against the toothed screw, the spring seat is provided with a screw, and the screw is connected with the toothed screw in the threaded hole. On the cylinder axle rod, the handle can be pulled back, the spring is compressed, the inner and outer toothed buckles are separated, the handle can be adjusted in any direction, after adjusting the direction, the spring is stretched when loosening, the inner and outer toothed buckles are engaged, and finally the rotation adjustment of the handle is completed, avoiding the danger of hanging to the obstacles in the riding process;

[0004] But as shown in the drawings, the handle in the patent is still located on the outside of the cylinder axle after folding, so that it still has the possibility of hanging to the external objects during riding, and therefore the hiding effect is not very good;

[0005] And the connecting position of the connecting piece and the cylinder axle is not convenient for lubrication, and if rust and other problems occur, the normal disassembly of the connecting piece will be affected. UTILITY MODEL CONTENT

[0006] (I) Technical problem solved

[0007] In view of the problems existing in the prior art, the utility model provides a bicycle hidden cylinder axle to solve the technical problems mentioned in the background art.

[0008] (II) Technical scheme

[0009] To achieve the above object, the utility model provides the following technical scheme: A bicycle hidden type cylinder shaft, including the cylinder shaft, one end of cylinder shaft is equipped with sealing element, the outer wall of sealing element is equipped with threaded column, the inner wall of threaded column is screwed with cylinder shaft, the middle position of sealing element and threaded column is equipped with through hole, the inside of through hole is equipped with movable rod, one end of movable rod is equipped with notched, the inside of notched is equipped with handle, one end of handle passes through through hole and is equipped with limit stop, the outer wall of sealing element is equipped with fixed ring, the locking hole is equipped on the limit stop and fixed ring, the inside of locking hole is equipped with locking pin, the outer wall of fixed ring is equipped with fastening ring, the fastening ring is screwed with fixed ring, the inner wall of locking pin both ends is in contact with fastening ring, the inside of threaded column is equipped with oil storage cavity.

[0010] The utility model further sets up, the outer wall of threaded column is equipped with oil outlet hole, oil outlet hole is equipped with multiple and all communicates with the inside of oil storage cavity, the outer wall of sealing element is equipped with oil hole, oil hole communicates with oil storage cavity, and it is convenient to lubricate the connecting position of threaded column.

[0011] The utility model further sets up, the inner wall of limit stop is equipped with sealing washer, sealing washer is located at one side of oil hole, and the outer wall of sealing element is in contact with sealing washer, and it is convenient to block up oil hole and prevent dust from entering.

[0012] The utility model further sets up, one end of handle is equipped with mounting hole, the inside of mounting hole is equipped with extension rod, the inner wall of mounting hole is screwed with extension rod, one end of extension rod is equipped with rotating block, the outer end of mounting hole and one end of handle are equipped with avoiding groove, the inside of avoiding groove is located rotating block, and it is convenient to increase power arm to make sealing element more labor saving when disassembling.

[0013] The utility model further sets up, the upper end of rotating block is equipped with twist block, and it is convenient to adjust the extension length of extension rod.

[0014] The utility model further sets up, the connecting position of sealing element and cylinder shaft is equipped with rubber ring, and it is convenient to increase the sealing property between cylinder shaft and sealing element.

[0015] The utility model further sets up, the outer wall of fastening ring is provided with antiskid line, and it is convenient to disassemble fastening ring.

[0016] The utility model further sets up, the outer wall of movable rod is equipped with the slot, the inside of through hole is equipped with the clamping block in correspondence, the clamping block is slidably installed with the slot, and it is convenient to disassemble sealing element and threaded column.

[0017] (Three) beneficial effect

[0018] Compared with the prior art, this utility model provides a concealed thru-axle for bicycles, which has the following advantages:

[0019] 1. By setting a through hole, a movable rod, and a locking pin, the user can hide the movable rod in the through hole and make the limiting block contact the outer wall of the seal. Then, the locking pin is inserted into the locking hole, and the fastening ring is rotated to install it on the outer end of the fixing ring to block the locking pin and prevent it from coming out. This achieves the effect of fixing the movable rod. Since the movable rod is located inside the cylinder shaft, there is no danger of snagging on obstacles during riding, making it convenient to use.

[0020] 2. By setting up an oil storage chamber, an oil outlet, and a filling hole, the user can periodically pour lubricating oil into the filling hole so that it flows out from the oil outlet, thereby lubricating the connection between the threaded column and the cylinder shaft, preventing rust and affecting the normal disassembly of the mechanism.

[0021] 3. By setting up mounting holes, extension rods, and rotating blocks, users can extend the extension rod from inside the mounting holes by rotating the rotating block. At this time, the extension rod can extend the power arm of the mechanism during disassembly, making the disassembly of the cylinder shaft easier and more convenient. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a bicycle's concealed thru-axle in its unused state.

[0023] Figure 2 Exploded view of the installation of the cylinder shaft, moving rod, seals, locking pins, and fastening rings;

[0024] Figure 3 Exploded view of the installation of the threaded column and movable rod;

[0025] Figure 4 Exploded view of the installation of the handle, extension rod, and rotating block on the movable rod;

[0026] Figure 5 This is a sectional view showing the installation of the seal and threaded post.

[0027] In the diagram: 1. Cylindrical shaft; 2. Seal; 3. Threaded post; 4. Through hole; 5. Movable rod; 6. Groove; 7. Handle; 8. Limit block; 9. Fixing ring; 10. Locking hole; 11. Locking pin; 12. Fastening ring; 13. Oil reservoir; 14. Oil outlet; 15. Oil filling hole; 16. Sealing gasket; 17. Mounting hole; 18. Extension rod; 19. Rotating block; 20. Avoidance groove; 21. Tightening block; 22. Rubber ring; 23. Slot; 24. Locking block. Detailed Implementation

[0028] It should be noted that the embodiments and features in the embodiments can be combined with each other in the case of no conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0029] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0030] In the utility model, in the case where no opposite statement is made, the direction such as "up, down" used is generally for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally for the left and right shown in the drawing; "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above direction words are not used to limit the utility model.

[0031] Please refer to Figures 1-5 A bicycle hidden barrel shaft, including the barrel shaft 1, one end of the barrel shaft 1 is equipped with sealing element 2, the outer wall of sealing element 2 is equipped with threaded column 3, threaded column 3 is installed with the inner wall of barrel shaft 1 by screw thread, the middle position of sealing element 2 and threaded column 3 is all set with through hole 4, the inside of through hole 4 is slidably equipped with movable rod 5, the one end of movable rod 5 is set with notch 6, the inside of notch 6 is rotatably equipped with handle 7, one end of handle 7 passes through through hole 4 and is equipped with limit block 8, the outer wall of sealing element 2 is equipped with fixed ring 9, locking hole 10 is all set in fixed ring 9 and limit block 8, locking pin 11 is arranged in locking hole 10, the outer wall of fixed ring 9 is equipped with fastening ring 12, fastening ring 12 is installed with fixed ring 9 by screw thread, the inner wall of fastening ring 12 is contacted with both ends of locking pin 11, the inside of threaded column 3 is set with oil storage cavity 13, the outer wall of fastening ring 12 is provided with anti-skid line, the outer wall of movable rod 5 is set with clamping groove 23, the inside of through hole 4 is correspondingly provided with clamping block 24, clamping block 24 is slidably installed with clamping groove 23.

[0032] In the embodiment, the outer wall of threaded column 3 is set with oil outlet hole 14, the oil outlet hole 14 is provided with multiple and is communicated with the inside of oil storage cavity 13, the outer wall of sealing element 2 is set with oil hole 15, the oil hole 15 is communicated with oil storage cavity 13, the inner wall of limit block 8 is equipped with sealing pad 16, the sealing pad 16 is located at one side of oil hole 15, and the sealing pad 16 is abutted with the outer wall of sealing element 2.

[0033] More specifically, when not in use, the movable rod 5 can be hidden in the through hole 4, and the limiting block 8 is in contact with the outer wall of the sealing element 2. Then the locking pin 11 is inserted into the locking hole 10, and the fastening ring 12 is turned to be installed on the outer end of the fixed ring 9, so as to block the locking pin 11 and prevent it from falling out, thereby achieving the effect of fixed installation of the movable rod 5. Since the movable rod 5 is located inside the barrel shaft 1, it will not be hung on obstacles during riding, which is convenient to use. In addition, lubricating oil can be poured out of the oil filling hole 15 to flow out of the oil outlet hole 14, thereby lubricating the connection position of the threaded column 3 and the barrel shaft 1, preventing rust and affecting the normal disassembly of the mechanism.

[0034] Please refer to Figure 3 and Figure 4 , as an embodiment of extending the power arm to make it easier to disassemble: one end of the handle 7 is provided with a mounting hole 17, and the inside of the mounting hole 17 is provided with an extension rod 18. The extension rod 18 is screwed with the inner wall of the mounting hole 17. One end of the extension rod 18 is provided with a rotating block 19. The outer end of the mounting hole 17 and the end of the handle 7 are provided with an avoidance groove 20. The rotating block 19 is located inside the avoidance groove 20. The upper end of the rotating block 19 is provided with a twisting block 21.

[0035] Specifically, the user can rotate the rotating block 19 to extend the extension rod 18 from the inside of the mounting hole 17. At this time, the power arm of the mechanism during disassembly can be extended by the extension rod 18, so that the barrel shaft 1 is more labor-saving during disassembly, which is convenient to use.

[0036] Please refer to Figure 3 , as a further embodiment of increasing the sealing performance of the connection position of the sealing element 2 and the barrel shaft 1: a rubber ring 22 is arranged at the connection position of the sealing element 2 and the barrel shaft 1.

[0037] Specifically, the sealing performance of the connection position of the sealing element 2 and the barrel shaft 1 can be increased to prevent dust from entering and affecting the service life of the barrel shaft 1.

[0038] In summary, when the whole device is in use: when the seal 2 needs to be disassembled, the fastening ring 12 can be disassembled first, then the locking pin 11 is taken out, at this time the movable rod 5 can be pulled out of the barrel shaft 1, then the handle 7 is rotated to keep it perpendicular to the movable rod 5, at this time the seal 2 can be disassembled by rotating the handle 7, which saves time and effort, and the extension rod 18 can also be extended from the inside of the mounting hole 17 by rotating the rotating block 19, at this time the power arm of the mechanism during disassembly can be extended by the action of the extension rod 18, so that the barrel shaft 1 is more labor-saving during disassembly, when not in use, the movable rod 5 can be hidden in the through hole 4, and the limiting block 8 is in contact with the outer wall of the seal 2, then the locking pin 11 is inserted into the locking hole 10, and the fastening ring 12 is rotated to be installed at the outer end of the fixed ring 9, to block the locking pin 11 from falling out, thereby achieving the effect of fixed installation of the movable rod 5, and since the movable rod 5 is located in the inside of the barrel shaft 1, it will not be hung on the obstacle during riding, and the user can also pour lubricating oil from the oil filling hole 15 regularly to flow out from the oil outlet hole 14, thereby lubricating the connection position of the threaded column 3 and the barrel shaft 1, preventing rusting and affecting the normal disassembly of the mechanism.

[0039] In all the above-mentioned solutions, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection methods, which will not be described one by one, and the above-mentioned solutions involving fixed connection are preferably considered to be welded, although the embodiments of the utility model have been shown and described, those skilled in the art can understand that the embodiments can be changed, modified, replaced and modified in various ways without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A hidden cartridge axle for a bicycle comprising a cartridge axle (1) characterized by: One end of the barrel shaft (1) is provided with a sealing element (2), the outer wall of the sealing element (2) is provided with a threaded column (3), the threaded column (3) is screwed with the inner wall of the barrel shaft (1), the middle position of the sealing element (2) and the threaded column (3) is provided with a through hole (4), the inside of the through hole (4) is slidably provided with a movable rod (5), one end of the movable rod (5) is provided with a notch (6), the inside of the notch (6) is rotatably provided with a handle (7), one end of the handle (7) passes through the through hole (4) and is provided with a limiting block (8), the outer wall of the sealing element (2) is provided with a fixed ring (9), the fixed ring (9) and the limiting block (8) are provided with a locking hole (10), the inside of the locking hole (10) is provided with a locking pin (11), the outer wall of the fixed ring (9) is provided with a fastening ring (12), the fastening ring (12) is screwed with the fixed ring (9), the two ends of the locking pin (11) are in contact with the inner wall of the fastening ring (12), the inside of the threaded column (3) is provided with an oil storage cavity (13).

2. A hidden hub axle for a bicycle as defined in claim 1, wherein: The outer wall of the threaded column (3) is provided with an oil outlet hole (14), the oil outlet hole (14) is provided with a plurality of and is in communication with the inside of the oil storage cavity (13), the outer wall of the sealing element (2) is provided with an oil hole (15), the oil hole (15) is in communication with the oil storage cavity (13).

3. A hidden hub axle for a bicycle as defined in claim 2, wherein: The inner wall of the limiting block (8) is provided with a sealing gasket (16), the sealing gasket (16) is located on one side of the oil hole (15), and the sealing gasket (16) is in contact with the outer wall of the sealing element (2).

4. The hidden hub axle for a bicycle of claim 1 wherein: One end of the handle (7) is provided with a mounting hole (17), the inside of the mounting hole (17) is provided with an extension rod (18), the extension rod (18) is screwed with the inner wall of the mounting hole (17), one end of the extension rod (18) is provided with a rotating block (19), the outer end of the mounting hole (17) and located at one end of the handle (7) is provided with an avoidance groove (20), the rotating block (19) is located in the inside of the avoidance groove (20).

5. A hidden hub axle for a bicycle as defined in claim 4, wherein: The upper end of the rotating block (19) is provided with a twisting block (21).

6. The hidden hub axle for a bicycle of claim 1 wherein: The connecting position of the sealing element (2) and the barrel shaft (1) is provided with a rubber ring (22).

7. A hidden hub axle for a bicycle as defined in claim 2, wherein: The outer wall of the fastening ring (12) is provided with an anti-skid line.

8. The hidden hub axle for a bicycle of claim 1 wherein: The outer wall of the movable rod (5) is provided with a clamping groove (23), the inside of the through hole (4) is provided with a clamping block (24) in correspondence, the clamping block (24) and the clamping groove (23) are slidably installed.

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