CN211139543U

CN211139543U - Head tube for folding bicycle

Info

Publication number: CN211139543U
Application number: CN201922019376.8U
Authority: CN
Inventors: 张海宁
Original assignee: Bernard Tianjin Sports Equipment Co ltd
Current assignee: Bernard Tianjin Sports Equipment Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2020-07-31
Anticipated expiration: 2029-11-21

Abstract

The utility model discloses a folding bicycle is with first pipe, including flexible first pipe, flexible first pipe includes sliding tube and tube socket, the lower extreme of sliding tube slides and pegs graft at the inner wall of tube socket, the sliding tube is including solid fixed ring, first shrink pipe, card strip, recess and second shrink pipe, the lower extreme fixed connection of first shrink pipe is at solid fixed ring's upper end inner wall, the card strip is provided with a pair ofly, the inner wall of card strip symmetry fixed connection at the second shrink pipe, the upper end lateral wall at the second shrink pipe is seted up to the recess, the outer wall at first shrink pipe of second shrink pipe cover, first shrink pipe and second shrink pipe contact, the lower extreme of second shrink pipe is through solid fixed ring's outer wall fixed connection, the tube socket includes connecting pipe and spliced tube, the lower extreme fixed connection of connecting pipe is in the upper end of spliced tube. The utility model discloses rotate when can preventing to extend, improved the stability of extension regulation work, better satisfying the use needs.

Description

Head tube for folding bicycle

Technical Field

The utility model relates to a head pipe equipment technical field for the bicycle specifically is a head pipe for folding bicycle.

Background

The pressure that mainly utilizes buckle or screw to improve two root canals in the joint structure of common simple and easy bicycle head pipe to improve its coefficient of friction, reach the purpose of adjusting two fixed combination pipes in back, nevertheless at fixed in-process, the angle of adjustment before the selection can produce the discrepancy with fixed back, thereby causes the unstable problem of regulation achievement, so the urgent need can alleviate the device of above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a folding bicycle is with head pipe to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a head tube for a folding bicycle comprises a telescopic head tube; the telescopic head pipe comprises a sliding pipe and a pipe seat, and the lower end of the sliding pipe is inserted in the inner wall of the pipe seat in a sliding manner; the sliding tube comprises a fixing ring, a first shrinkage tube, a clamping strip, a groove and a second shrinkage tube, the lower end of the first shrinkage tube is fixedly connected to the inner wall of the upper end of the fixing ring, the clamping strip is provided with a pair of clamping strips, the clamping strips are symmetrically and fixedly connected to the inner wall of the second shrinkage tube, the groove is formed in the side wall of the upper end of the second shrinkage tube, the second shrinkage tube covers the outer wall of the first shrinkage tube, the first shrinkage tube is in contact with the second shrinkage tube, the lower end of the second shrinkage tube is fixedly connected with the outer wall of the fixing ring, the tube seat comprises a connecting tube and an inserting tube, the lower end of the connecting tube is fixedly connected to the upper end of the inserting tube, the inserting tube is matched with the inner wall of the first shrinkage tube, the inserting tube is matched with the clamping strip, the clamping strip is in sliding clamping connection with the side wall of the first shrinkage tube, the clamping strip penetrates through the first shrinkage tube, and the inserting tube slides on, the lower end of the connecting pipe, which is deviated from the inserting pipe, is supported at the upper end of the first shrinkage pipe.

Preferably, the sliding tube further comprises a pair of second gaps, the second gaps are symmetrically hollowed out of the outer wall of the first shrinkage tube, and the clamping strip penetrates through the first shrinkage tube through the second gaps.

Preferably, the sliding tube further comprises a pair of first gaps, and the first gaps are symmetrically hollowed out of the outer wall of the second shrinkage tube.

Preferably, the telescopic head pipe further comprises a buckle, the inner wall of the buckle is clamped and installed on the outer wall of the groove, the outer wall of one side of the groove is fixedly connected with the inner wall of the buckle, and the outer wall of the other side of the groove is slidably installed on the inner wall of the buckle.

Preferably, the tube socket further comprises an anti-rotation clamping groove, the anti-rotation clamping groove is evenly formed in the outer wall of the insertion tube, the anti-rotation clamping groove is formed in the outer wall of the insertion tube, and the inner wall of the anti-rotation clamping groove is matched with the outer wall of the clamping strip.

Compared with the prior art, the beneficial effects of the utility model are as follows:

in the using process, when the telescopic head pipe needs to be extended, the buckle is manually loosened, the outward elastic force of the first telescopic pipe is recovered, meanwhile, the outward elastic force of the second telescopic pipe is recovered, the first telescopic pipe leaves the outer wall of the splicing pipe, the outward elastic force of the second telescopic pipe is recovered to drive the clamping strip to loosen the anti-rotation clamping groove, the splicing pipe can slide along the outer wall of the clamping strip through the anti-rotation clamping groove, the clamping strip is used for limiting the rotation of the splicing pipe, the splicing pipe can only slide up and down, when the angle between the sliding pipe and the pipe seat needs to be adjusted, the telescopic head pipe is further loosened by means of an additional wrench, the clamping strip completely leaves the inner side of the anti-rotation clamping groove, the splicing pipe can rotate along the inside of the first telescopic pipe, and the sliding pipe and the pipe seat are adjusted to a satisfactory angle, and then the telescopic head pipe is recovered by means; and finally, locking the telescopic head pipe, inwards extruding the groove by utilizing the inner wall of the telescopic head pipe, inwards shrinking the upper part of the second shrinkage pipe through the groove, extruding the first shrinkage pipe through the second shrinkage pipe, extruding the plug pipe through the clamping strip to achieve the purpose of pressing and fixing the plug pipe through the first shrinkage pipe and the clamping strip, and finishing the adjustment work of the telescopic head pipe.

Drawings

FIG. 1 is a schematic view of the main structure of the present invention;

FIG. 2 is a schematic view of the main body of the present invention;

FIG. 3 is a schematic view of the split structure of the sliding tube of the present invention;

fig. 4 is a schematic view of the tube seat structure of the present invention.

In the figure: 1. a telescopic head pipe; 2. a sliding tube; 3. a tube holder; 4. buckling; 5. a fixing ring; 6. a first shrink tube; 7. a first slit; 8. clamping the strip; 9. a groove; 10. a second shrink tube; 11. a second slit; 12. a connecting pipe; 13. inserting a pipe; 14. a clamping groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships that are relative to each other, are merely for convenience of description and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, the present invention provides an embodiment: a head tube for a folding bicycle comprises a telescopic head tube 1; the telescopic head pipe 1 comprises a sliding pipe 2 and a pipe seat 3, and the lower end of the sliding pipe 2 is inserted in the inner wall of the pipe seat 3 in a sliding manner; the sliding tube 2 comprises a fixing ring 5, a first shrinkage tube 6, a clamping strip 8, a groove 9 and a second shrinkage tube 10, the lower end of the first shrinkage tube 6 is fixedly connected with the inner wall of the upper end of the fixing ring 5, the clamping strip 8 is provided with a pair of clamping strips 8, the clamping strips 8 are symmetrically and fixedly connected with the inner wall of the second shrinkage tube 10, the groove 9 is arranged on the side wall of the upper end of the second shrinkage tube 10, the second shrinkage tube 10 covers the outer wall of the first shrinkage tube 6, the first shrinkage tube 6 is in contact with the second shrinkage tube 10, the lower end of the second shrinkage tube 10 is fixedly connected with the outer wall of the fixing ring 5, the tube seat 3 comprises a connecting tube 12 and an inserting tube 13, the lower end of the connecting tube 12 is fixedly connected with the upper end of the inserting tube 13, the inserting tube 13 is matched with the inner wall of the first shrinkage tube 6, the inserting tube 13 is matched with the clamping strip 8, the clamping strip 8 is slidably clamped on the side wall of the first shrinkage tube 6, the clamping strip 8 penetrates, when the telescopic joint pipe 1 needs to be extended in a use process, the buckle 4 is manually loosened, the outward elastic force of the first telescopic pipe 6 is recovered, the outward elastic force of the second telescopic pipe 10 is recovered, the first telescopic pipe 6 is enabled to be away from the outer wall of the inserting pipe 13, the outward elastic force of the second telescopic pipe 10 is recovered to drive the clamping strip 8 to loosen the anti-rotation clamping groove 14, the inserting pipe 13 can slide along the outer wall of the clamping strip 8 through the anti-rotation clamping groove 14, the clamping strip 8 is utilized to limit the rotation of the inserting pipe 13, the inserting pipe 13 can only slide up and down, when the angle between the sliding pipe 2 and the pipe seat 3 needs to be adjusted, the telescopic joint pipe 1 is further loosened by means of an additional wrench, the clamping strip 8 completely leaves the inner side of the anti-rotation clamping groove 14, and the inserting pipe 13 can rotate along the inner part of the first telescopic pipe 6, after the sliding pipe 2 and the pipe seat 3 are adjusted to a satisfactory angle, the telescopic head pipe 1 is restored by an external wrench; locking flexible first pipe 1 at last, utilize flexible first pipe 1 inner wall to inwards extrude recess 9, make the upper portion of second shrink pipe 10 to inwards shrink through recess 9, extrude first shrink pipe 6 through second shrink pipe 10, extrude grafting pipe 13 through card strip 8 and reach and will compress tightly fixed purpose with grafting pipe 13 through first shrink pipe 6 and card strip 8, accomplish the regulation work of flexible first pipe 1.

Sliding tube 2 still includes second gap 11, second gap 11 is provided with a pair ofly, the outer wall at first shrink tube 6 is seted up in 11 symmetry fretworks in second gap, card strip 8 runs through first shrink tube 6 through second gap 11, sliding tube 2 still includes first gap 7, first gap 7 is provided with a pair ofly, the outer wall at second shrink tube 10 is seted up in 7 symmetry fretworks in first gap, flexible first pipe 1 still includes buckle 4, the outer wall at recess 9 is installed to the inner wall joint of buckle 4, the inner wall fixed connection of buckle 4 is passed through to one side outer wall of recess 9, the inner wall slidable mounting that buckle 4 is passed through to the opposite side outer wall of recess 9, tube socket 3 still includes prevents changeing draw-in groove 14, prevent changeing draw-in groove 14 and evenly set up the outer wall at spliced tube 13, prevent changeing draw-in groove 14 and set up the outer wall at spliced tube 13, prevent changeing the inner wall of draw-in groove 14 and.

The working principle is as follows: in the use process, when the telescopic head pipe 1 needs to be extended, the buckle 4 is firstly manually loosened, the outward elasticity of the first telescopic pipe 6 is utilized for recovery, meanwhile, the outward elastic force of the second contraction pipe 10 is recovered to enable the first contraction pipe 6 to leave the outer wall of the insertion pipe 13, the outward elastic force of the second contraction pipe 10 is recovered to drive the clamping strip 8 to loosen the anti-rotation clamping groove 14, so that the insertion pipe 13 can slide along the outer wall of the clamping strip 8 through the anti-rotation clamping groove 14, the clamping strip 8 is utilized to limit the rotation of the insertion pipe 13, so that the inserting pipe 13 can only slide up and down, when the angle between the sliding pipe 2 and the pipe seat 3 needs to be adjusted, the telescopic head pipe 1 is further loosened by an additional wrench, so that the clamping strip 8 is completely separated from the inner side of the anti-rotation clamping groove 14, so that the inserting pipe 13 can rotate along the inside of the first shrinkage pipe 6, the sliding pipe 2 and the pipe seat 3 are adjusted to a satisfactory angle, and then the expansion head pipe 1 is restored by an external wrench; locking flexible first pipe 1 at last, utilize flexible first pipe 1 inner wall to inwards extrude recess 9, make the upper portion of second shrink pipe 10 to inwards shrink through recess 9, extrude first shrink pipe 6 through second shrink pipe 10, extrude grafting pipe 13 through card strip 8 and reach and will compress tightly fixed purpose with grafting pipe 13 through first shrink pipe 6 and card strip 8, accomplish the regulation work of flexible first pipe 1.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a folding bicycle is with head pipe, includes flexible head pipe (1), its characterized in that: the telescopic head pipe (1) comprises a sliding pipe (2) and a pipe seat (3), and the lower end of the sliding pipe (2) is inserted in the inner wall of the pipe seat (3) in a sliding manner; the sliding tube (2) comprises a fixing ring (5), a first shrinkage tube (6), a clamping strip (8), a groove (9) and a second shrinkage tube (10), the lower end of the first shrinkage tube (6) is fixedly connected to the inner wall of the upper end of the fixing ring (5), the clamping strip (8) is provided with a pair of clamping strips, the clamping strips (8) are symmetrically and fixedly connected to the inner wall of the second shrinkage tube (10), the groove (9) is formed in the side wall of the upper end of the second shrinkage tube (10), the second shrinkage tube (10) covers the outer wall of the first shrinkage tube (6), the first shrinkage tube (6) is in contact with the second shrinkage tube (10), the lower end of the second shrinkage tube (10) is fixedly connected with the outer wall of the fixing ring (5), the tube seat (3) comprises a connecting tube (12) and an inserting tube (13), the lower end of the connecting tube (12) is fixedly connected to the upper end of the inserting tube (13), the utility model discloses a take up the structure of the pipe, including the plug pipe (13), the inner wall looks adaptation of plug pipe (13) and first shrink pipe (6), plug pipe (13) and card strip (8) looks adaptation, card strip (8) slip joint is at the lateral wall of first shrink pipe (6), card strip (8) run through first shrink pipe (6), plug pipe (13) slip the inner wall of pegging graft at first shrink pipe (6), lower extreme that connecting pipe (12) deviate from plug pipe (13) supports the upper end at first shrink pipe (6).

2. The head pipe for a folding bicycle according to claim 1, characterized in that: the sliding tube (2) further comprises a second gap (11), the second gap (11) is provided with a pair of gaps, the second gap (11) is symmetrically hollowed out on the outer wall of the first shrinkage tube (6), and the clamping strip (8) penetrates through the first shrinkage tube (6) through the second gap (11).

3. The head pipe for a folding bicycle according to claim 1, characterized in that: the sliding pipe (2) further comprises a first gap (7), the first gap (7) is provided with a pair of gaps, and the first gap (7) is symmetrically hollowed out on the outer wall of the second shrinkage pipe (10).

4. The head pipe for a folding bicycle according to claim 1, characterized in that: the telescopic head pipe (1) further comprises a buckle (4), the inner wall of the buckle (4) is connected with the outer wall of the groove (9) in a clamped mode, the outer wall of one side of the groove (9) is fixedly connected with the inner wall of the buckle (4), and the outer wall of the other side of the groove (9) is installed in a sliding mode through the inner wall of the buckle (4).

5. The head pipe for a folding bicycle according to claim 1, characterized in that: the tube socket (3) further comprises an anti-rotation clamping groove (14), the anti-rotation clamping groove (14) is uniformly formed in the outer wall of the insertion tube (13), the anti-rotation clamping groove (14) is formed in the outer wall of the insertion tube (13), and the inner wall of the anti-rotation clamping groove (14) is matched with the outer wall of the clamping strip (8).