A telescopic fork boot

Abstract

The utility model discloses a telescopic fork protective sleeve, including the pole body, the one end of pole body is provided with the U type frame, the other end is provided with the spline shaft, the junction of spline shaft and U type frame is provided with the cylinder, the outer wall of cylinder is provided with the external thread, the outside of pole body is provided with the protective sleeve, the inner wall of protective sleeve is provided with the internal thread, and the position of internal thread and external thread corresponds and the thread is compatible. The groove of protective sleeve one end carries out the bearing to the cylinder, and the protective sleeve is connected together with the cylinder thread, and further connects the protective sleeve with the cylinder together through the fastening screw, guarantees the reliable connection of protective cover and cylinder, and also is convenient for disassembly replacement, and the stress of telescopic fork in the working process is easy to eliminate, thereby avoid the crack on the sleeve, and more will not have the breakage condition to take place, plays the protection effect to telescopic fork.

Description

Technical Field

[0001] This utility model belongs to the field of telescopic fork technology, and in particular relates to a telescopic fork protective sleeve. Background Technology

[0002] To protect the telescopic fork and extend its service life, a sleeve is usually installed on the splined shaft of the telescopic fork for protection. Currently, one end of the sleeve is usually welded to the telescopic fork, which makes it difficult to eliminate the stress generated by the telescopic fork during operation. This makes the sleeve prone to cracking or even breakage, thus failing to provide protection for the telescopic fork. Utility Model Content

[0003] To address the above problems, this utility model provides a telescopic fork protective sleeve.

[0004] This utility model is implemented as follows: A telescopic fork protective sleeve includes a rod body, one end of which is fixedly provided with a U-shaped frame, and the other end of which is provided with a spline shaft. A column is fixedly provided at the connection between the spline shaft and the U-shaped frame to ensure a reliable connection. The outer wall of the column is provided with an external thread. A protective sleeve is provided on the outer side of the rod body to protect the spline shaft. A cylindrical groove is formed at the opening of one end of the protective sleeve to support the column. An internal thread is provided on the inner wall of the protective sleeve located at the groove. The internal thread and the external thread are positioned correspondingly and fit together, which not only ensures a reliable connection between the protective sleeve and the column, but also facilitates disassembly and replacement.

[0005] Preferably, the depth of the groove is the same as the thickness of the column, which facilitates the end of the protective sleeve to abut against one end of the U-shaped frame, ensuring the stability of the protective sleeve position, and also allows the first threaded hole and the second threaded hole to be quickly aligned.

[0006] Preferably, a first threaded hole is provided on the protective sleeve wall located at the groove, and a second threaded hole is provided on the outer wall of the column. The first threaded hole and the second threaded hole are positioned correspondingly and have the same diameter. Fastening screws are provided through the first threaded hole and the second threaded hole, and the protective sleeve and the column are firmly and reliably connected together by the fastening screws, while also facilitating disassembly.

[0007] Preferably, an annular groove is formed on the inner wall of the protective sleeve opening on the side opposite to the groove, and an O-ring is provided in the annular groove.

[0008] Preferably, an oil injection hole is provided at the center of the rod and the U-shaped frame, so that lubricating oil can flow along the oil injection hole to the components inside the U-shaped frame for lubrication.

[0009] Preferably, the U-shaped frame has symmetrical through holes to facilitate connection with components. The line connecting the centers of the through holes is perpendicular to the extension line of the oil injection hole, ensuring that lubricating oil flows along the oil injection hole to the components inside the U-shaped frame.

[0010] Preferably, the inner diameter of the protective sleeve is larger than the diameter of the spline shaft to ensure that the spline shaft passes through the protective sleeve.

[0011] The beneficial effects of this utility model are: the groove at one end of the protective sleeve supports the column, the protective sleeve and the column are threaded together, and the protective sleeve and the column are further connected together by fastening screws, which not only ensures the reliable connection between the protective sleeve and the column, but also facilitates disassembly and replacement. The stress generated by the telescopic fork during operation is easily eliminated, thereby avoiding cracks on the sleeve and preventing breakage, thus playing a protective role for the telescopic fork. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the protective sleeve. Figure 3 This is a schematic diagram of the structure of one end of the protective sleeve; In the diagram: 1. Rod body; 2. U-shaped bracket; 3. Splined shaft; 4. Column; 5. External thread; 6. Protective sleeve; 7. Groove; 8. Internal thread; 9. First threaded hole; 10. Second threaded hole; 11. Fastening screw; 12. Ring groove; 13. O-ring; 14. Oil injection hole; 15. Through hole. Detailed Implementation

[0013] To better understand the technical solution of this utility model, the following description, in conjunction with the accompanying drawings, further illustrates this utility model.

[0014] like Figure 1-3 The protective sleeve for a telescopic fork shown includes a rod body 1. A U-shaped frame 2 is fixedly mounted at one end of the rod body 1, and a splined shaft 3 is mounted at the other end of the rod body 1. A column cylinder 4 is fixedly mounted at the connection between the splined shaft 3 and the U-shaped frame 2 to ensure a reliable connection. An external thread 5 is provided on the outer wall of the column cylinder 4. A protective sleeve 6 is provided on the outer side of the rod body 1 to protect the splined shaft 3. The inner diameter of the protective sleeve 6 is larger than the diameter of the splined shaft 3 to ensure that the splined shaft 3 passes through the protective sleeve 6. A cylindrical groove 7 is formed at the opening at one end of the protective sleeve 6 to support the column cylinder 4. An internal thread 8 is provided on the inner wall of the protective sleeve 6 located at the groove 7. The internal thread 8 corresponds to the external thread 5 and the threads fit together, which not only ensures a reliable connection between the protective sleeve 6 and the column cylinder 4, but also facilitates disassembly and replacement.

[0015] The depth of the groove 7 is the same as the thickness of the column 4, which facilitates the end of the protective sleeve 6 to abut against one end of the U-shaped frame 2, ensuring the stability of the protective sleeve 6, and also allows the first threaded hole 9 and the second threaded hole 10 to be quickly aligned. The first threaded hole 9 is provided on the wall of the protective sleeve 6 located at the groove 7, and the second threaded hole 10 is provided on the outer wall of the column 4. The first threaded hole 9 and the second threaded hole 10 are corresponding in position and have the same diameter. Fastening screws 11 are provided through the first threaded hole 9 and the second threaded hole 10, so that the protective sleeve 6 and the column 4 are firmly and reliably connected together by the fastening screws 11, while also facilitating disassembly.

[0016] An annular groove 12 is provided on the inner wall of the opening of the protective sleeve 6 on the side opposite to the groove 7, and an O-ring 13 is provided in the annular groove 12.

[0017] The rod 1 and the U-shaped frame 2 have an oil injection hole 14 at their center, which allows lubricating oil to flow along the oil injection hole 14 to the components inside the U-shaped frame 2 for lubrication. The U-shaped frame 2 has symmetrical through holes 15 for connecting to the components. The line connecting the centers of the through holes 15 is perpendicular to the extension line of the oil injection hole 14, ensuring that the lubricating oil flows along the oil injection hole 14 to the components inside the U-shaped frame 2.

[0018] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A telescopic fork protective sleeve, comprising a rod body, wherein a U-shaped frame is fixedly mounted at one end of the rod body, and a splined shaft is mounted at the other end of the rod body, characterized in that, A column is fixedly installed at the connection between the spline shaft and the U-shaped frame. The outer wall of the column is provided with external threads. A protective sleeve is provided on the outer side of the rod body. A cylindrical groove is opened at one end of the protective sleeve. An internal thread is provided on the inner wall of the protective sleeve located at the groove. The internal thread and the external thread are positioned correspondingly and the threads are engaged.

2. The telescopic fork protective sleeve according to claim 1, characterized in that, The depth of the groove is the same as the thickness of the cylinder.

3. A telescopic fork protective sleeve according to claim 2, characterized in that, A first threaded hole is provided on the protective sleeve wall located at the groove, and a second threaded hole is provided on the outer wall of the column. The first threaded hole and the second threaded hole are positioned correspondingly and have the same diameter. Fastening screws are provided through the first threaded hole and the second threaded hole.

4. The telescopic fork protective sleeve according to claim 1, characterized in that, An annular groove is provided on the inner wall of the protective sleeve opening on the side opposite to the groove, and an O-ring is provided in the annular groove.

5. A telescopic fork protective sleeve according to claim 1, characterized in that, An oil injection hole is provided at the center of the rod and the U-shaped frame.

6. A telescopic fork protective sleeve according to claim 5, characterized in that, The U-shaped frame has symmetrical through holes, and the line connecting the centers of the through holes is perpendicular to the extension line of the oil injection hole.

7. A telescopic fork protective sleeve according to claim 1, characterized in that, The inner diameter of the protective sleeve is larger than the diameter of the spline shaft.

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