Central shaft sleeve convenient to install for bicycle

Abstract

The center shaft sleeve convenient to install for the bicycle comprises an upper shaft sleeve body and a lower shaft sleeve body, the lower end of one side of the upper shaft sleeve body is fixedly connected with two connecting blocks, the middles of the two connecting blocks are jointly and fixedly connected with a rotating rod, the upper end of one side of the lower shaft sleeve body is fixedly connected with a limiting block, and the limiting block is fixedly connected with the rotating rod. The side, away from the connecting block, of the upper shaft sleeve body is fixedly connected with an upper connecting plate, and the side, away from the limiting block, of the lower shaft sleeve body is fixedly connected with a lower connecting plate. The bolts, the threaded block, the threaded ring, the oil conveying plate and the like are adopted, the multiple bolts are placed at the upper end of the upper connecting plate, then the bolts penetrate through the upper connecting plate and the lower connecting plate, and then the threaded ring is connected to the threaded block in a threaded mode, so that the shaft sleeve can be rapidly installed on the center shaft, and the shaft sleeve can be conveniently replaced; lubricating oil can be evenly dripped on the center shaft through the oil conveying plate and the oil outlet holes, and therefore the center shaft and the shaft sleeve are prevented from being damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft sleeves, in particular to a central shaft sleeve for a bicycle which is easy to install. Background Art

[0002] Bicycles, also known as bicycles or single bikes, are a means of transportation and transport that is powered by human power. In 1818, German BK Von Dries invented a wooden two-wheeled bicycle with handlebars. In 1839, Scottish K. Macmillan made the first iron bicycle with a large rear wheel and a small front wheel driven by a crank-connecting rod mechanism, which was driven by pedals. In 1861, French father and son P. and E. Michaud invented a bicycle with a large front wheel and a small rear wheel, a crank on the front wheel, and the pedal crank installed on the front axle. When installing the center axis of existing bicycles, a shaft sleeve needs to be installed on the center axis to prevent the center axis from being damaged.

[0003] The existing center sleeves installed on bicycles are mostly installed by direct welding or by thermal expansion and contraction. This method is extremely laborious to install, and this installation method is not convenient to replace when the sleeve is damaged, and the sleeve becomes a disposable item, which not only reduces the practicality of the sleeve but also causes waste. The existing center sleeves installed on bicycles cannot be evenly added with lubricating oil, resulting in the center shaft and the sleeve being easily damaged by friction. Therefore, in order to solve the above-mentioned problems, the utility model proposes a center sleeve for bicycles that is easy to install. Utility Model Content

[0004] The purpose of the utility model is to provide a center shaft sleeve for a bicycle which is easy to install, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a central shaft sleeve for a bicycle that is easy to install, comprising an upper shaft sleeve body and a lower shaft sleeve body, wherein the lower end of one side of the upper shaft sleeve body is fixedly connected to two connecting blocks, a rotating rod is fixedly connected to the middle of the two connecting blocks, an upper end of one side of the lower shaft sleeve body is fixedly connected to a limiting block, an upper connecting plate is fixedly connected to the side of the upper shaft sleeve body away from the connecting block, and a lower connecting plate is fixedly connected to the side of the lower shaft sleeve body away from the limiting block, the upper connecting plate is located directly above the lower connecting plate, four bolts are arranged at the upper end of the upper connecting plate, the lower ends of the bolts are all fixedly connected to threaded blocks through the upper connecting plate and the lower connecting plate, and the lower ends of the threaded blocks are all threadedly connected to threaded rings;

[0006] The upper end of the upper sleeve body is fixedly connected with an oil inlet, the lower end of the upper sleeve body is provided with a storage groove, the interior of the storage groove is fixedly connected with an oil delivery plate, and a central shaft body is provided between the upper sleeve body and the lower sleeve body.

[0007] Preferably, the two connecting blocks and the limiting block are arranged correspondingly, the limiting block is located in the middle of the two connecting blocks, and the rotating rod is rotatably connected to the inside of the limiting block.

[0008] Preferably, the four bolts are symmetrically arranged in pairs at the four corners of the upper connecting plate.

[0009] Preferably, the insides of the four threaded rings are all provided with thread grooves corresponding to the threaded blocks.

[0010] Preferably, an oil inlet hole corresponding to the oil inlet port is formed at the upper end of the upper sleeve body.

[0011] Preferably, the oil inlet is fixedly connected to the upper end of the oil delivery plate, and the lower end of the oil delivery plate is provided with a plurality of oil outlet holes arranged at equal intervals.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model adopts bolts, threaded blocks, threaded rings, oil delivery plates, etc., by placing multiple bolts on the upper end of the upper connecting plate, and then passing the bolts through the upper connecting plate and the lower connecting plate, and then threading the threaded ring on the threaded block, so that the sleeve can be quickly installed on the center shaft, and the sleeve can be conveniently replaced, and the lubricating oil can be evenly dripped on the center shaft through the oil delivery plate and the oil outlet hole, thereby avoiding damage to the center shaft and the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a structural schematic diagram of the upper sleeve main body of the utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the storage slot of the utility model;

[0016] Figure 4 This is a structural schematic diagram of the oil delivery plate of the utility model;

[0017] Figure 5 It is a structural schematic diagram of the bolt of the utility model.

[0018] In the figure: 1. upper sleeve body; 101. connecting block; 102. storage groove; 103. oil inlet hole; 2. lower sleeve body; 21. limit block; 3. rotating rod; 4. upper connecting plate; 5. lower connecting plate; 6. bolt; 61. threaded block; 7. threaded ring; 71. threaded groove; 8. oil inlet; 9. oil delivery plate; 91. oil outlet hole; 10. center shaft body. DETAILED DESCRIPTION

[0019] See also Figure 1-5The utility model provides a technical solution: a central shaft sleeve for a bicycle that is easy to install, comprising an upper shaft sleeve body 1 and a lower shaft sleeve body 2, wherein the lower end of one side of the upper shaft sleeve body 1 is fixedly connected to two connecting blocks 101, a rotating rod 3 is fixedly connected between the two connecting blocks 101, an upper end of one side of the lower shaft sleeve body 2 is fixedly connected to a limiting block 21, an upper connecting plate 4 is fixedly connected to the side of the upper shaft sleeve body 1 away from the connecting block 101, a lower connecting plate 5 is fixedly connected to the side of the lower shaft sleeve body 2 away from the limiting block 21, the upper connecting plate 4 is located directly above the lower connecting plate 5, four bolts 6 are arranged at the upper end of the upper connecting plate 4, the lower ends of the bolts 6 are all passed through the upper connecting plate 4 and the lower connecting plate 5 and are fixedly connected to threaded blocks 61, and the lower ends of the threaded blocks 61 are all threadedly connected to threaded rings 7;

[0020] The upper end of the upper sleeve body 1 is fixedly connected with an oil inlet 8, the lower end of the upper sleeve body 1 is provided with a storage groove 102, the interior of the storage groove 102 is fixedly connected with an oil delivery plate 9, and a central shaft body 10 is provided between the upper sleeve body 1 and the lower sleeve body 2.

[0021] Furthermore, the two connecting blocks 101 and the limit block 21 are correspondingly arranged, the limit block 21 is located in the middle of the two connecting blocks 101, and the rotating rod 3 is rotatably connected to the inside of the limit block 21 to facilitate the rotation of the lower sleeve body 2, so that the upper sleeve body 1 and the lower sleeve body 2 can be quickly installed on the central shaft body 10.

[0022] Furthermore, four bolts 6 are symmetrically arranged at the four corners of the upper connecting plate 4, so that the upper sleeve body 1 and the lower sleeve body 2 can be firmly installed on the central shaft body 10.

[0023] Furthermore, the four threaded rings 7 are each provided with a thread groove 71 corresponding to the threaded block 61 , so that the threaded ring 7 can be threadedly connected to the threaded block 61 .

[0024] Furthermore, an oil inlet hole 103 corresponding to the oil inlet port 8 is formed at the upper end of the upper sleeve body 1 , so that the lubricating oil can enter the oil delivery plate 9 .

[0025] Furthermore, the oil inlet 8 is fixedly connected to the upper end of the oil delivery plate 9 , and a plurality of oil outlet holes 91 arranged at equal intervals are provided at the lower end of the oil delivery plate 9 , so that the lubricating oil can be evenly discharged into the central shaft body 10 .

[0026] Specifically, when the utility model is used, first, the lower sleeve body 2 is placed close to the central shaft body 10 and directly below it, then the upper sleeve body 1 is rotated to align the upper connecting plate 4 and the lower connecting plate 5, and then a plurality of bolts 6 are passed through the upper connecting plate 4 and the lower connecting plate 5 and placed on the upper connecting plate 4, and then a plurality of threaded rings 7 are threadedly connected to the corresponding threaded blocks 61, so that the upper sleeve body 1 and the lower sleeve body 2 can be stably installed on the central shaft body 10, and then the lubricating oil can be added to the oil delivery plate 9 through the oil inlet 8, and then the lubricating oil can be evenly dripped onto the central shaft body 10 through the oil outlet holes 91 evenly spaced on the oil delivery plate 9, thereby avoiding damage to the upper sleeve body 1, the lower sleeve body 2 and the central shaft body 10, thereby facilitating the installation of the central sleeve and improving the service life of the central shaft body 10 and the central sleeve.

Claims

1. A center sleeve for a bicycle that is easy to install, comprising an upper sleeve body (1) and a lower sleeve body (2), characterized in that: The lower end of one side of the upper sleeve body (1) is fixedly connected to two connecting blocks (101), and a rotating rod (3) is fixedly connected between the two connecting blocks (101). The upper end of one side of the lower sleeve body (2) is fixedly connected to a limiting block (21). The side of the upper sleeve body (1) away from the connecting blocks (101) is fixedly connected to an upper connecting plate (4), and the side of the lower sleeve body (2) away from the limiting block (21) is fixedly connected to a lower connecting plate (5). The upper connecting plate (4) is located directly above the lower connecting plate (5). Four bolts (6) are provided at the upper end of the upper connecting plate (4), and the lower ends of the bolts (6) pass through the upper connecting plate (4) and the lower connecting plate (5) to be fixedly connected to threaded blocks (61). The lower ends of the threaded blocks (61) are threadedly connected to threaded rings (7). The upper end of the upper sleeve body (1) is fixedly connected to an oil inlet (8), the lower end of the upper sleeve body (1) is provided with a storage groove (102), the interior of the storage groove (102) is fixedly connected to an oil delivery plate (9), and a central shaft body (10) is provided between the upper sleeve body (1) and the lower sleeve body (2).

2. A bicycle center sleeve that is easy to install according to claim 1, characterized in that: The two connecting blocks (101) and the limiting block (21) are arranged correspondingly, the limiting block (21) is located in the middle of the two connecting blocks (101), and the rotating rod (3) is rotatably connected inside the limiting block (21).

3. A bicycle center sleeve that is easy to install according to claim 1, characterized in that: The four bolts (6) are symmetrically arranged in pairs at the four corners of the upper connecting plate (4).

4. The center sleeve for bicycles that is easy to install according to claim 1, characterized in that: The four threaded rings (7) are each provided with a threaded groove (71) corresponding to the threaded block (61).

5. The center sleeve for bicycles that is easy to install according to claim 1, characterized in that: An oil inlet hole (103) corresponding to the oil inlet port (8) is provided at the upper end of the upper sleeve body (1).

6. The center sleeve for bicycles that is easy to install according to claim 1, characterized in that: The oil inlet (8) is fixedly connected to the upper end of the oil delivery plate (9), and the lower end of the oil delivery plate (9) is provided with a plurality of oil outlet holes (91) arranged at equal intervals.

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