CN210996134U - Telescopic bicycle middle tube inner diameter control device - Google Patents
Telescopic bicycle middle tube inner diameter control device Download PDFInfo
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- CN210996134U CN210996134U CN201921896927.2U CN201921896927U CN210996134U CN 210996134 U CN210996134 U CN 210996134U CN 201921896927 U CN201921896927 U CN 201921896927U CN 210996134 U CN210996134 U CN 210996134U
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- pipe
- core pipe
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- inner diameter
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Abstract
The utility model discloses a pipe internal diameter controlling means in telescopic bicycle belongs to pipe processing field in the bicycle, its flexible seat with be used for adjusting the regulation core pipe of well pipe internal diameter, flexible seat is inside to be formed with flexible passageway along its length direction, the both ends of flexible passageway extend to on the lateral wall of flexible seat, it wears to locate in flexible passageway to adjust the core pipe, adjust and be connected for sliding between core pipe and the flexible passageway, the length of adjusting the core pipe is greater than the length of flexible seat, the diameter of adjusting the core pipe is not more than the internal diameter of well pipe, it is intraductal by stretching out and going into in the regulation that flexible seat is inside to adjust the core pipe. The utility model discloses have and add internal diameter and the external diameter size that can make well pipe man-hour and satisfy the requirement, make thickness reach the effect of requirement simultaneously.
Description
Technical Field
The utility model relates to a processing technology field in the bicycle, in particular to pipe internal diameter control device in telescopic bicycle.
Background
The frame is used as the framework of the whole bicycle, and the correctness and the comfort of the riding posture are determined and influenced to the maximum extent. The bicycle middle tube is used for connecting the seat tube and the bicycle saddle in the frame, the middle tube is used for matching the size of the seat tube, the inner diameter of the middle tube needs to be ensured in the production process, and the thickness of the outer diameter and the thickness of the middle tube wall need to be consistent simultaneously for meeting the requirements of appearance and strength. At present, the middle pipe is mainly made of aluminum alloy special pipes, the outer diameter and the inner diameter are difficult to be simultaneously ensured in the processing process in the prior art, and the problem needs to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a telescopic bicycle well internal diameter controlling means has the internal diameter and the external diameter size that can make well pipe man-hour and satisfy the requirement man-hour, makes thickness reach the effect of requirement simultaneously.
The utility model provides a pipe internal diameter controlling means in telescopic bicycle, is including flexible seat and the regulation core pipe that is used for adjusting well pipe internal diameter, flexible seat is inside to be formed with flexible passageway along its length direction, the both ends of flexible passageway extend to on the lateral wall of flexible seat, adjust in the core pipe wears to locate flexible passageway, adjust and be connected for sliding between core pipe and the flexible passageway, the length of adjusting the core pipe is greater than the length of flexible seat, the diameter of adjusting the core pipe is not more than the internal diameter of well pipe, it is intraductal to adjust the core pipe by stretching out and getting into in the regulation by flexible seat is inside.
The utility model discloses further set up to: the adjusting core pipe is fixedly connected with a limiting ring, the telescopic channel comprises a limiting section and a sliding section, the limiting section is communicated with two ends of the sliding section, and the diameter of the limiting section is larger than that of the adjusting core pipe and smaller than that of the limiting ring.
The utility model discloses further set up to: the limiting section comprises a first limiting section and a second limiting section, the first limiting section is communicated with the side wall of the telescopic seat, and the second limiting section is located inside the telescopic seat and communicated with a necking die groove used for necking the middle pipe.
The utility model discloses further set up to: the diameter of the adjusting core pipe is smaller than the inner diameter of the middle pipe, and the difference value between the diameter of the adjusting core pipe and the inner diameter of the middle pipe is in the range of 0.2cm-0.45 cm.
The utility model discloses further set up to: one end of the adjusting core pipe extends out of the first limiting section and is provided with a connecting thread.
The utility model discloses further set up to: the telescopic seat is a cuboid.
The middle pipe is arranged between the special-shaped moulds, one end of the middle pipe extends into the necking mould groove at the end part of the telescopic seat, the middle pipe is subjected to pipe shrinking processing, the connecting bolt at one end, far away from the middle pipe, of the adjusting core pipe is connected with a handle, the adjusting core pipe is pushed to the limit ring to be abutted against one end, close to the necking mould groove, of the telescopic channel, the special-shaped mould is matched with the middle pipe to be shaped, the outer diameter is fixed, the adjusting core pipe is withdrawn from the inner part of the middle pipe, the inner diameter is uniform, the thickness is guaranteed, and the appearance and the strength are guaranteed while the seat pipe and the saddle.
To sum up, the utility model discloses following beneficial effect has:
1. the adjusting core pipe connected in the telescopic channel in a sliding manner extends into the middle pipe and retreats from the middle pipe to help the inner diameter of the middle pipe to be shaped, so that the size of the inner diameter is ensured;
2. the movement length of the adjusting core pipe can be limited by the arrangement of the limiting ring fixedly connected to the adjusting core pipe, so that the adjusting core pipe is effectively prevented from sliding out of the telescopic channel;
3. through the necking die cavity communicated with the second limiting section, necking processing can be synchronously performed on the pipe orifice of the middle pipe, and the processing process is simplified.
Drawings
Fig. 1 is a schematic structural diagram for embodying the whole of the present invention;
fig. 2 is a schematic cross-sectional view of the structure of each part according to the present invention.
In the figure, 1, a telescopic seat; 11. necking a die cavity; 2. adjusting the core pipe; 21. a limiting ring; 22. connecting threads; 3. a telescopic channel; 31. a limiting section; 311. a first limiting section; 312. a second limiting section; 32. and (5) a slipping section.
Detailed Description
The present invention will be described in detail with reference to the attached drawings, and other advantages and effects of the present invention can be easily understood by those skilled in the art from the disclosure of the present specification. In the present specification, the terms "upper", "lower", "left", "right", "middle", and the like are used for the sake of clarity, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also regarded as the scope of the present invention without substantial changes in the technical content.
Example (b):
as shown in fig. 1, for the utility model relates to a telescopic bicycle well pipe internal diameter control device, including flexible seat 1 with be used for adjusting well regulation core pipe 2 of pipe internal diameter, adjust core pipe 2 and wear to locate in flexible seat 1 and adjust the core pipe 2 and be connected for sliding between the flexible seat 1. The length of the adjusting core pipe 2 is larger than that of the telescopic seat 1, the diameter of the adjusting core pipe 2 is not larger than the inner diameter of the middle pipe, and the adjusting core pipe 2 extends out of the telescopic seat 1 and enters the middle pipe.
As shown in fig. 1 and 2, a telescopic channel 3 is formed inside the telescopic seat 1 along the length direction thereof, the adjusting core tube 2 is connected in the telescopic channel 3 in a sliding manner, the telescopic channel 3 comprises a limiting section 31 and a sliding section 32, the limiting section 31 comprises a first limiting section 311 and a second limiting section 312, and the first limiting section 311 and the second limiting section 312 are communicated with two ends of the sliding section 32. The adjusting core tube 2 is fixedly connected with a limiting ring 21, the first limiting section 311 and the second limiting section 312 are communicated with two ends of the sliding section 32, the inner diameters of the first limiting section 311 and the second limiting section 312 are equal, and the diameters of the first limiting section 311 and the second limiting section 312 are larger than the diameter of the adjusting core tube 2 and smaller than the diameter of the limiting ring 21.
As shown in fig. 2, the first limiting section 311 is communicated with the side wall of the telescopic base 1, and the second limiting section 312 is located inside the telescopic base 1 and is communicated with a necking die cavity 11 for necking the middle pipe. The diameter of the adjusting core pipe 2 is smaller than the inner diameter of the middle pipe, and the difference between the diameter of the adjusting core pipe 2 and the inner diameter of the middle pipe is 0.3 cm. One end of the adjusting core tube 2 extends from the first limiting section 311 and is formed with a connecting thread 22. The telescopic base 1 is set to be a cuboid, so that the whole telescopic base can be stably placed and the centering tube can be adjusted.
The implementation principle of the above embodiment is as follows: the middle pipe is arranged between the special-shaped moulds, one end of the middle pipe extends into the necking die groove 11 at the end part of the telescopic seat 1, the middle pipe is subjected to pipe shrinking processing, the connecting bolt at the end, far away from one end of the middle pipe, of the adjusting core pipe 2 is connected with a handle, the adjusting core pipe 2 is pushed to abut against one end, close to the necking die groove 11, of the limiting ring 21 and the telescopic channel 3, the special-shaped mould is matched with the middle pipe to be shaped, the outer diameter is fixed, the adjusting core pipe 2 is withdrawn from the inner part of the middle pipe, and the inner diameter is uniform due to the fact that the adjusting core pipe 2 is adjusted, so that the thickness is guaranteed.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a telescopic bicycle well pipe internal diameter controlling means which characterized in that: including flexible seat (1) and regulation core pipe (2) that are used for adjusting well pipe internal diameter, flexible seat (1) is inside to be formed with flexible passageway (3) along its length direction, the both ends of flexible passageway (3) extend to on the lateral wall of flexible seat (1), it wears to locate in flexible passageway (3) to adjust core pipe (2), adjust and be connected for sliding between core pipe (2) and flexible passageway (3), the length of adjusting core pipe (2) is greater than the length of flexible seat (1), the diameter of adjusting core pipe (2) is not more than the internal diameter of well pipe, it is intraductal to adjust core pipe (2) by stretching out and going into in flexible seat (1) inside.
2. The telescopic bicycle middle tube inner diameter control device according to claim 1, wherein: adjust fixed connection and have spacing ring (21) on core pipe (2), flexible passageway (3) are including spacing section (31) and section (32) that slides, spacing section (31) communicate in the both ends of section (32) that slides, the diameter of spacing section (31) is greater than the diameter of adjusting core pipe (2), is less than the diameter of spacing ring (21).
3. The telescopic bicycle middle tube inner diameter control device according to claim 2, wherein: spacing section (31) include first spacing section (311) and second spacing section (312), first spacing section (311) and flexible seat (1) lateral wall intercommunication, spacing section (312) of second are located flexible seat (1) inside and are connected with and are used for carrying out throat die cavity (11) of throat to well pipe.
4. The telescopic bicycle middle tube inner diameter control device according to claim 3, wherein: the diameter of the adjusting core pipe (2) is smaller than the inner diameter of the middle pipe, and the difference value between the diameter of the adjusting core pipe (2) and the inner diameter of the middle pipe is in the range of 0.2cm-0.45 cm.
5. The telescopic bicycle middle tube inner diameter control device according to claim 1, wherein: one end of the adjusting core pipe (2) extends out of the first limiting section (311) and is formed with a connecting thread (22).
6. The telescopic bicycle middle tube inner diameter control device according to claim 5, wherein: the telescopic seat (1) is a cuboid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896927.2U CN210996134U (en) | 2019-11-06 | 2019-11-06 | Telescopic bicycle middle tube inner diameter control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921896927.2U CN210996134U (en) | 2019-11-06 | 2019-11-06 | Telescopic bicycle middle tube inner diameter control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210996134U true CN210996134U (en) | 2020-07-14 |
Family
ID=71499989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921896927.2U Active CN210996134U (en) | 2019-11-06 | 2019-11-06 | Telescopic bicycle middle tube inner diameter control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210996134U (en) |
-
2019
- 2019-11-06 CN CN201921896927.2U patent/CN210996134U/en active Active
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