Headstock bowl set front fork aligning structure and bicycle with handlebar bowl set front fork aligning structure

Abstract

The utility model provides a stem bowl group front fork alignment structure, which is used for positioning a vertical pipe and a vertical pipe and comprises a bowl group, a front fork and a rear fork, the bowl group is provided with a through hole for mounting the vertical pipe, and the bowl group is fixedly connected with the vertical pipe; the step part is fixed on the inner wall of the through hole of the bowl group, and the step part is positioned between the bowl group and the vertical pipe; a clamping part is arranged at the upper end of the vertical pipe, and the clamping part and the step part are assembled in a clamped mode. According to the scheme, after the clamping part of the vertical pipe is clamped with the step part in the bowl set, the positions of the vertical pipe and the vertical pipe are locked, for example, when a handlebar on the vertical pipe is rotated, the vertical pipe can rotate along with the vertical pipe, the problem that the handlebar slides during rotation can be avoided, and therefore the use safety of the bicycle is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycle production and manufacturing, in particular to a stem bowl assembly front fork alignment structure and a bicycle thereof. Background Art

[0002] The handlebars of existing bicycles are prone to tilting during installation and use, which will affect the safety of bicycle use. Tungsten wire is usually installed on the seat tube of existing bicycles. The position of the tungsten wire is adjusted by a screw, and the tungsten wire and the front fork vertical tube are expanded to limit the angle of the handlebar. However, this expansion connection method is prone to slippage. When the handlebar is tilted, it needs to be adjusted again. The existing handlebar positioning method is time-consuming and laborious when used. Therefore, a new solution is needed to improve the efficiency of handlebar positioning.

[0003] There are also some public patents about handlebar positioning in the prior art, such as the application number 201420596940.7, the patent name is a foldable bicycle handlebar that is easy to install, including long screws, a vertical tube, a middle tube, a handle, a quick-release handle, a locking screw, a grip, a tungsten iron wire, and a positioning cover. The upper end of the vertical tube is provided with a positioning cover, the long screw is inserted from the lower end of the vertical tube and installed inside the vertical tube, the upper end of the long screw is connected to the positioning cover, the lower end of the long screw is fixedly connected to the vertical tube through the tungsten iron wire, the vertical tube is vertically provided with a middle tube, the front end of the middle tube is vertically provided with a handle, the quick-release handle is installed on the handle through a fixing screw and a fine-tuning nut, and the grip is installed inside the handle through a locking screw. Obviously, this method uses tungsten wire to achieve the positioning of the handlebar, which obviously has the problem that the handlebar is easy to tilt, and there is a problem that the handlebar adjustment is time-consuming and labor-intensive.

[0004] Therefore, the technical problem that the present application needs to solve is: how to position the handlebars efficiently and stably. Utility Model Content

[0005] In order to solve the above technical problems, the utility model proposes a stem and bowl assembly front fork alignment structure. In this solution, after the clamping portion of the stem is engaged with the step portion inside the bowl assembly, the positions of the stem and the stem are locked. For example, when the handlebar on the stem is rotated, the stem will rotate accordingly, which can avoid the problem of the handlebar slipping during rotation, thereby improving the safety of bicycle use.

[0006] Specifically, the utility model proposes a stem and bowl assembly front fork alignment structure for positioning a stem tube and a vertical tube, comprising:

[0007] A bowl set, wherein the bowl set is provided with a through hole for mounting a riser, and the bowl set and the riser are fixedly connected;

[0008] A step portion, the step portion is fixed to the inner wall of the through hole of the bowl set, and the step portion is located between the bowl set and the riser;

[0009] A clamping portion is provided at the upper end of the vertical pipe, and the clamping portion is clamped and assembled with the step portion.

[0010] Preferably, there are a plurality of step portions, and the gaps between adjacent step portions are used to snap into the snap-fitting portion.

[0011] Preferably, the plurality of step portions are arranged in a uniform circular array based on the axis of the through hole.

[0012] Preferably, the number of the step portions is two.

[0013] Preferably, the cross-sectional shape of the step portion along the horizontal direction is an arc shape.

[0014] Preferably, the cross-section of the clamping portion along the horizontal direction is an arc shape.

[0015] Preferably, a supporting portion is provided on the outer peripheral surface of the bowl assembly.

[0016] Preferably, an inserting portion is further provided on the outer circumferential surface of the bowl assembly, and the inserting portion is located below the supporting portion, and a cross-section of the inserting portion along the horizontal direction is a polygon.

[0017] Furthermore, an inclined portion is provided at the lower end of the plug-in portion, and an introduction portion is provided at the lower end of the inclined portion, and a cross-sectional area of ​​the introduction portion along the horizontal direction is smaller than a cross-sectional area of ​​the plug-in portion along the horizontal direction.

[0018] In addition, the present application also proposes a bicycle, comprising the above-mentioned stem bowl assembly front fork alignment structure, and also comprising a head pipe, in which the bowl assembly is inserted and installed, and the support portion is pressed on the top of the head pipe.

[0019] Furthermore, a tungsten wire is provided at the lower end of the riser. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the drawings required to be used in the embodiments or the description of the prior art will be briefly introduced below.

[0021] Figure 1 is an exploded schematic diagram of the stem and bowl assembly front fork alignment structure proposed in this embodiment;

[0022] Figure 2 is a structural schematic diagram of the stem and bowl assembly front fork alignment structure in this embodiment;

[0023] Figure 3 is a top view of the clamping portion in this embodiment;

[0024] Figure 4 is a front view of the bowl set in this embodiment;

[0025] Figure 5 is a bottom view of the bowl assembly in this embodiment;

[0026] Figure 6 It is a schematic diagram of the positional relationship between the bowl set and the riser;

[0027] Figure 7 yes Figure 6 Cross-section along the AA direction;

[0028] Figure 8 yes Figure 6 Cross-section along the BB direction.

[0029] The reference numerals in the accompanying drawings are as follows:

[0030] 11-bowl assembly; 12-riser tube; 13-through hole; 14-vertical tube; 15-step portion; 16-clamping portion; 17-support portion; 18-insertion portion; 19-head tube; 20-inclined portion; 21-introduction portion; 22-tungsten wire. DETAILED DESCRIPTION

[0031] The technical solution of the present application is further described below in conjunction with specific embodiments, but the present application is not limited to these embodiments.

[0032] like Figures 1 to 8 As shown, this embodiment provides a stem and bowl assembly front fork alignment structure for positioning the seat tube 12 and the vertical tube 14, including:

[0033] A bowl set 11, wherein a through hole 13 for mounting a riser 12 is provided in the bowl set 11, and the bowl set 11 and the riser 12 are fixedly connected;

[0034] A step portion 15, the step portion 15 is fixed on the inner wall of the through hole 13 of the bowl assembly 11, and the step portion 15 is located between the bowl assembly 11 and the riser 12;

[0035] A clamping portion 16 is disposed at the upper end of the vertical pipe 14 , and the clamping portion 16 is clamped and assembled with the step portion 15 .

[0036] The handlebar is fastened to the riser 12. The installation method of the handlebar and the riser 12 belongs to the prior art and will not be described in detail herein.

[0037] The technical effect of this solution is that it can prevent the handlebars on the seat tube 12 from loosening, effectively prevent the handlebars from tilting, and improve the safety of bicycle riding.

[0038] The headset 11 in this embodiment can be fixed to the seat tube 12 by welding. In this case, the step 15, the headset 11 and the seat tube 12 are directly welded. Alternatively, the headset 11 can be fixed to the seat tube 12 by a bolt assembly. At the same time, corresponding mounting holes can be provided on the headset 11 for mounting the bolt assembly.

[0039] After the clamping portion 16 of the stem tube 14 is engaged with the step portion 15 inside the bowl assembly 11, the positions of the stem tube 12 and the stem tube 14 are locked. For example, when the handlebar on the stem tube 12 is rotated, the stem tube 14 will rotate accordingly, which can prevent the handlebar from slipping during rotation, thereby improving the safety of the bicycle.

[0040] In addition, for vertical positioning, the present solution may use a tungsten wire 22 . As a prior art, the tungsten wire 22 is usually installed at the lower end of the vertical pipe 12 . The tungsten wire 22 needs to be inserted into the vertical pipe 14 to lock the vertical pipe 12 and the vertical pipe 14 .

[0041] As an implementation of this embodiment, there are multiple step portions 15, and the gaps between adjacent step portions 15 are used to snap into the snap-in portion 16. Further, the multiple step portions 15 are evenly arranged in a circumferential array based on the axis of the through hole 13.

[0042] There are two step portions 15. The cross-sectional shape of the step portion 15 along the horizontal direction is an arc shape. The cross-sectional shape of the clamping portion 16 along the horizontal direction is an arc shape. The arc-shaped step portion 15 and the clamping portion 16 have the advantages of high clamping efficiency and space saving.

[0043] As an implementation of this embodiment, a support portion 17 is provided on the outer circumference of the bowl assembly 11. The support portion 17 is provided to maintain a suitable position between the seat tube 12 and the head tube 19 of the bicycle so that the seat tube 12 does not deviate excessively downward.

[0044] As an implementation of this embodiment, an inserting portion 18 is further provided on the outer circumferential surface of the bowl assembly 11. The inserting portion 18 is located below the support portion 17, and the cross-section of the inserting portion 18 along the horizontal direction is a polygon.

[0045] Furthermore, the lower end of the plug-in portion 18 is provided with an inclined portion 20, and the lower end of the inclined portion 20 is provided with an introduction portion 21, and the cross-sectional area of ​​the introduction portion 21 along the horizontal direction is smaller than the cross-sectional area of ​​the plug-in portion 18 along the horizontal direction. This facilitates the plug-in portion 18 to be quickly plugged into the head pipe 19.

[0046] In addition, the present application also proposes a bicycle, including the above-mentioned stem, headset and front fork alignment structure, and also includes a head pipe 19, in which the headset 11 is inserted and installed, and the support part 17 is pressed on the top of the head pipe 19.

[0047] Furthermore, a tungsten wire 22 is provided at the lower end of the vertical pipe 12. The tungsten wire 22 is a prior art, and the working principle of the tungsten wire 22 is not described in detail in this solution. When the tungsten wire 22 is adjusted, the tungsten wire 22 and the vertical pipe 14 are expanded and tightened, which can prevent the vertical pipe 12 and the vertical pipe 14 from shifting in the vertical direction.

[0048] In this solution, the support portion 17 is used to prevent the seat tube 12 from translating downward, and the vertical tube 14 has an expansion portion to prevent the head tube 19 from translating downward. Under the action of gravity, the positions of the seat tube 12, the vertical tube 14 and the head tube 19 are initially defined. Finally, under the action of the tungsten wire, the seat tube 12 and the head tube 19 are locked, which can ensure the structural stability of the bicycle.

[0049] For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the utility model, which all fall within the protection scope of the utility model.

Claims

1. A stem and bowl assembly front fork alignment structure, used for positioning a stem tube (12) and a vertical tube (14), characterized in that: include: A bowl set (11), wherein the bowl set (11) is provided with a through hole (13) for mounting a stand pipe (12), and the bowl set (11) and the stand pipe (12) are fixedly connected; a step portion (15), wherein the step portion (15) is fixed on the inner wall of the through hole (13) of the bowl assembly (11), and the step portion (15) is located between the bowl assembly (11) and the stand pipe (12); The upper end of the vertical pipe (14) is provided with a clamping portion (16), and the clamping portion (16) is clamped and assembled with the step portion (15).

2. The stem and bowl assembly front fork alignment structure according to claim 1, characterized in that: The number of the step portions (15) is plural, and the gaps between adjacent step portions (15) are used to snap into the snap-in portion (16).

3. The stem and bowl assembly front fork alignment structure according to claim 2, characterized in that: The plurality of step portions (15) are arranged in a uniform circular array with the axis of the through hole (13) as a reference.

4. The stem and bowl assembly front fork alignment structure according to claim 3, characterized in that: The number of the step portions (15) is two.

5. The stem and bowl assembly front fork alignment structure according to claim 4, characterized in that: The cross-sectional shape of the step portion (15) along the horizontal direction is an arc shape.

6. The stem and bowl assembly front fork alignment structure according to claim 5, characterized in that: The cross section of the clamping portion (16) along the horizontal direction is in the shape of an arc.

7. The stem and bowl assembly front fork alignment structure according to claim 1, characterized in that: The outer peripheral surface of the bowl set (11) is provided with a supporting portion (17).

8. The stem and bowl assembly front fork alignment structure according to claim 7, characterized in that: The outer peripheral surface of the bowl assembly (11) is also provided with an inserting portion (18), the inserting portion (18) is located below the supporting portion (17), and the cross-section of the inserting portion (18) along the horizontal direction is a polygon.

9. A bicycle, characterized in that: It comprises the stem bowl assembly front fork alignment structure as claimed in claim 7 or 8, and also comprises a head pipe (19), wherein the bowl assembly (11) is inserted and installed in the head pipe (19), and the support portion (17) is pressed on the top of the head pipe (19).

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