WO2022007194A1

WO2022007194A1 - Fast assembly structure for front fork handlebar of bicycle frame

Info

Publication number: WO2022007194A1
Application number: PCT/CN2020/116103
Authority: WO
Inventors: 李贤成; 王俊
Original assignee: 宁波途锐达休闲用品有限公司
Priority date: 2020-07-10
Filing date: 2020-09-18
Publication date: 2022-01-13
Also published as: CN213008577U

Abstract

A fast assembly structure for a front fork handlebar of a bicycle frame, comprising a frame surface tube (1), a handlebar (3), a front fork frame (2) sleeved on the frame surface tube (1), wherein two ends of the frame surface tube (1) are provided with an upper bearing (6) and a lower bearing (7), respectively; the upper end of the front fork frame (2) penetrates to above the upper bearing (6); the upper end of the front fork frame (2) is detachably sleeved with a locking ring (5); the locking ring (5) abuts above the upper bearing (6); the lower end of the handlebar (3) is provided with a cap (4); and the cap (4) and the locking ring (5) are detachably connected so that the handlebar (3) and the front fork frame (2) are fixed to each other. The locking ring (5) is arranged on the upper end of the front fork frame (2), and the locking ring (5) and the upper bearing (6) abut and are fixed against each other, so that the fixation of the two in the axial direction is achieved on the basis of ensuring the relative rotation between the front fork frame (2) and the frame surface tube (1). Moreover, the provision of the cap (4) enables the handlebar (3) and the front fork frame (2) to be easily disassembled and assembled, which has better applicability.

Description

A kind of bicycle frame front fork handlebar quick group structure

technical field

The utility model relates to the technical field of bicycle accessories, in particular to a quick group structure of a front fork handlebar of a bicycle frame.

Background technique

Bicycles are one of the more common transportation, sports, fitness, leisure and recreational products, which generally include components such as frames, front forks, handlebars and wheels. The front end of the frame is provided with a frame surface tube, the middle part of the front fork frame is rotatably connected to the frame surface tube, the handlebar is installed on the upper end of the front fork frame, and the wheels are installed at the lower end of the front fork frame, thus forming the bicycle front.

Most of the current front fork frame and handlebar are directly and integratedly processed, which results in a large space required for packing and transportation. There are also split handlebars and front fork frames on the market. The front fork frame is sleeved into the frame surface tube, and the handlebar is installed on the upper end of the front fork frame to achieve assembly. However, the structure of the existing split handlebar and front fork frame is unstable after installation, and it is easy to loosen and slip, resulting in a potential safety hazard, and special wrenches, pliers, etc. are needed during installation to realize the alignment between the handlebar and the front fork frame. It is time-consuming and laborious to operate, and it is difficult to meet the needs of ordinary users.

SUMMARY OF THE INVENTION

The purpose of the utility model is to solve the problem that the installation structure between the split handlebar, the front fork frame and the frame surface tube in the prior art is not stable enough to cause safety hazards, and special tools are needed to disassemble and assemble, which is time-consuming and labor-intensive.

The technical solution of the present utility model is to provide a bicycle frame front fork handlebar quick-set structure, which includes a frame surface tube, a handlebar and a front fork frame sleeved on the frame surface tube. Both ends are respectively provided with an upper bearing and a lower bearing, the upper end of the front fork frame is protruded to the upper part of the upper bearing, and the upper end of the front fork frame is detachably sleeved with a locking ring, the locking ring The lower end of the handlebar is provided with a cap against the upper part of the upper bearing, and the cap is detachably connected with the locking ring so that the handlebar and the front fork are fixed.

Preferably, the upper end surface of the front fork frame is provided with a slot, the lower end of the handlebar is connected with a locking piece, and the lower end of the locking piece is embedded in the slot, so as to ensure the circumference of the front fork frame and the handlebar. to fix more firmly.

Preferably, a through hole for the handlebar to pass through is provided in the middle of the cap, the cap is located above the locking member, and the cap is in conflict with the locking member. The cover cap is first sleeved on the handlebar, and then the locking member is fixedly connected to the lower end of the handlebar. In addition, the arrangement of the locking piece also simplifies the assembly steps and facilitates the operation.

Preferably, the bottom surface of the cap is provided with a groove, the bottom of the groove of the cap is in conflict with the upper end of the locking member, the groove wall of the groove of the cap is provided with threads, and the locking The inner ring wall of the ring is threadedly connected to the front fork frame, and the outer ring wall of the locking ring is threadedly connected to the cap, so that the user only needs to rotate the cap or the locking ring to realize disassembly and assembly, which effectively improves the Ease of operation.

Preferably, the upper end of the outer ring wall of the locking ring is provided with threads, the lower end of the outer ring wall of the locking ring is provided with friction lines, and the outer side wall of the cap is provided with friction lines to facilitate user disassembly and assembly Cap or locking ring.

Preferably, the upper bearing is a thrust bearing or a thrust radial bearing, the lower part of the locking ring is in conflict with the upper ring of the upper bearing, the bottom surface of the locking ring is further provided with a protruding part, the The protruding portion is inserted between the upper ring of the upper bearing and the front fork frame, so as to ensure a more stable circumferential fixation between the handlebar and the front fork frame.

Preferably, it also includes an upper gasket, the lower part of the upper gasket is clamped to the upper end of the frame surface pipe, the upper part of the upper gasket is provided with a receiving groove, and the upper bearing is installed on the upper gasket in the receiving groove of the ring.

Preferably, it also includes a lower backing ring, the upper part of the lower backing ring is clamped to the lower end of the frame surface tube, the lower part of the lower backing ring is provided with a accommodating groove, and the lower bearing is mounted on the lower backing In the accommodating groove of the ring, a step table is provided at the position where the front fork frame passes out to the lower end of the frame surface tube, and the step table is in conflict with the lower ring of the lower bearing.

Preferably, it also includes a lower backing ring and a snap ring, the upper portion of the lower backing ring is clamped to the lower end of the frame surface tube, the lower portion of the lower backing ring is provided with a accommodating groove, and the lower bearing is installed in the In the accommodating groove of the lower backing ring, a stepped platform is provided at the position where the front fork frame penetrates to the lower end of the frame surface tube, and the upper part of the snap ring is clamped between the lower bearing and the front fork frame , the lower part of the snap ring is clamped between the lower bearing and the step platform.

Compared with the prior art, the solution of the present utility model has the beneficial effects that: by arranging a locking ring on the upper end of the front fork frame, the locking ring is fixed in conflict with the upper bearing, so as to ensure the front fork frame and the frame surface tube On the basis of the relative rotation between them, the two are fixed in the axial direction, and because the locking ring is easy to process as a part, it can have better machining accuracy, which makes the connection between the front fork frame and the upper bearing easier. tight and stable. Through the setting of the cap, when the cap is connected with the locking ring, the lower end of the handlebar and the upper end of the front fork frame can be tightly contacted to achieve fixation. When the cap is separated from the locking ring, the handlebar and the front fork frame are mutually At this time, the locking ring is further removed from the upper end of the front fork frame, and the front fork frame can be removed from the frame surface tube to achieve complete separation.

Description of drawings

Fig. 1 is the cross-sectional schematic diagram of the front fork handlebar quick group structure of the bicycle frame of the utility model;

Fig. 2 is the enlarged schematic diagram of A area in Fig. 1;

Fig. 3 is the enlarged schematic diagram of B area in Fig. 1;

4 is a schematic side view of the structure of the front fork handlebar quick group of the bicycle frame of the utility model;

5 is a partial schematic diagram of the front fork handlebar quick-set structure of the bicycle frame of the utility model after removing the cap and the locking ring;

In the drawings: 1-frame barrel; 2-front fork frame; 2.1-card slot; 2.2-step platform; 3-handlebar; 3.1-locking piece; 3.2-cross butt screw; 4-cap; 5-lock Retaining ring; 6-upper bearing; 6.1-upper backing ring; 7-lower bearing; 7.1-lower backing ring; 7.2-retaining ring.

detailed description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Please refer to FIG. 1-FIG. 4. Embodiment 1 of the present invention provides a structure of a front fork handlebar of a bicycle frame, which includes a frame surface tube 1, a handlebar 3 and a front cover sleeved on the frame surface tube 1. Fork frame 2, the two ends of the frame surface tube 1 are respectively provided with an upper bearing 6 and a lower bearing 7, the upper end of the front fork frame 2 penetrates to the top of the upper bearing 6, the front fork frame 2 The upper end of the handlebar 3 is detachably sleeved with a lock ring 5, the lock ring 5 is in contact with the upper part of the upper bearing 6, the lower end of the handlebar 3 is provided with a cap 4, the cover 4 and the lock The ring 5 is detachably connected so that the handlebar 3 is fixed to the front fork 2 .

When it needs to be disassembled, it is only necessary to first separate the cap 4 from the locking ring 5, and then the handlebar 3 can be removed from the front fork frame 2; then the locking ring 5 is separated from the upper end of the front fork frame 2, because at this time The locking ring 5 is no longer in conflict with the upper bearing 6, and the front fork frame 2 can be disengaged downward from the frame surface tube 1 to achieve complete disassembly; when assembling is required, it is only necessary to perform the reverse operation as above, which is simple and convenient .

The beneficial effect of the above solution relative to the prior art is: by arranging the locking ring 5 on the upper end of the front fork frame 2, and the locking ring 5 and the upper bearing 6 are in conflict and fixed, so as to ensure the front fork frame 2 and the frame barrel 1 On the basis of the relative rotation between the two, the axial fixation of the two is realized, and because the locking ring 5 is easy to process as a part, it can have better machining accuracy, so that the front fork frame 2 and the upper bearing 6 are connected. The connection is tighter and more stable. Through the setting of the cap 4, on the one hand, when the cap 4 is connected with the locking ring 5, the lower end of the handlebar 3 and the upper end of the front fork frame 2 can be closely contacted to achieve positioning, and on the other hand, the cap 4 can further lock the lock. The retaining ring 5 forms a protective effect, so that the interference between the locking ring 5 and the upper bearing 6 is more stable.

Please refer to FIG. 5 , the upper end surface of the front fork frame 2 is provided with a semicircular clamping groove 2.1 , and the clamping groove 2.1 is arranged along the radial direction of the front fork frame 2 . The lower end of the handlebar 3 is sleeved with an annular locking piece 3.1, and the locking piece 3.1 is fixed to the handlebar 3 by means of a cross butt screw 3.2. The upper end of the locking member 3.1 is in conflict with the cap 4, and the lower end of the locking member 3.1 is provided with an ear-shaped protrusion, and the ear-shaped protrusion is inserted into the slot 2.1, so that the handlebar 3 and the front fork frame 2 are circumferentially arranged to fixed.

In this embodiment, the cap 4 is a circular ring, and the bottom surface of the cap 4 is provided with a circular groove. The bottom of the groove of the cap 4 is in conflict with the upper ring of the locking member 3.1, and the groove wall of the groove of the cap 4 is provided with threads. The inner ring wall and the outer ring wall of the upper part of the locking ring 5 are both provided with threads, and the side wall of the upper end of the front fork frame 2 is also provided with threads. The locking ring 5 is threadedly connected to the upper end of the front fork frame 2, and the cap 4 and the locking ring 5 are also threadedly connected, so that the user only needs to rotate the cap 4 or the locking ring 5 to realize disassembly and assembly without tools.

It should be noted that, in addition to the threaded connection between the cap 4 and the locking ring 5, pin holes can also be provided on the side walls of the cap 4 and the locking ring 5, and the connection can be achieved by pins; A snap groove is provided on the 5, and a snap protrusion is provided on the lower end of the cap 4, so that the cap 4 and the locking ring 5 are snap-connected; other types of detachable connections are also possible.

In addition, the lock ring 5 may be directly integrally formed during processing, or may be formed by splicing an inner lock ring and an outer lock ring as shown in FIG. 2 , thereby further improving the processing accuracy. The upper part of the locking ring 5 is preferably made of metal material, so that the threaded connection between the locking ring 5 and the cap 4 and the front fork frame 2 is tighter; the lower part of the locking ring 5 is preferably made of plastic material, which can reduce costs while reducing costs. , which also makes the interference between the locking ring 5 and the upper bearing 6 more stable.

In this embodiment, the upper backing ring 6.1 is circular, and the upper diameter of the upper backing ring 6.1 is larger than the lower diameter to form a stepped shape. The lower part of the upper backing ring 6.1 is clamped to the upper end of the frame tube 1, the upper part of the upper backing ring 6.1 is located outside the frame tube 1, and the middle part of the upper backing ring 6.1 is provided with a circular accommodating groove. The upper bearing 6 is installed in the accommodating groove of the upper backing ring 6.1.

The upper bearing 6 is preferably a thrust bearing, and the thrust bearing includes an upper ring and a lower ring. The lower ring of the upper bearing 6 is clamped in the accommodating groove, and the upper ring of the upper bearing 6 is in conflict with the bottom surface of the locking ring 5 , that is, the upper end of the front fork frame 2 is restricted above the frame barrel 1 .

In order to further improve the tightness of fit between the locking ring 5 and the upper bearing 6 , an annular protrusion 5.1 is provided in the middle of the bottom surface of the locking ring 5 . The protruding part 5.1 of the locking ring 5 is clamped between the upper ring of the upper bearing 6 and the front fork frame 2, so as to ensure a more stable connection between the front fork frame 2, the locking ring 5 and the upper bearing 6, and at the same time Looseness problems are avoided.

In this embodiment, a lower backing ring 7.1 is clamped to the lower end of the frame barrel 1 . The lower grommet 7.1 has the same structure as the upper grommet 6.1, but the setting direction is opposite, that is, the upper part of the lower grommet 7.1 is inserted into the lower end of the frame tube 1, and the lower part of the lower grommet 7.1 is provided with an accommodating groove. The lower bearing 7 is located inside the accommodating groove of the lower backing ring 7.1, and the lower bearing 7 has the same structure as the upper bearing 6, but the arrangement direction is opposite. The position where the front fork frame 2 passes through the lower end of the frame barrel 1 is provided with a step platform 2.2, and the snap ring 7.2 is clamped between the lower bearing 7 and the step platform 2.2. Obviously, the cooperating use of the locking ring 5 and the snap ring 7.2 respectively located above and below the frame barrel 1 realizes the axial fixation of the frame barrel 1 and the front fork frame 2, and when the locking ring 5 is removed, the front fork When the frame 2 comes out downward, the snap ring 7.2 is separated from the lower bearing 7, and the separation of the frame tube 1 and the front fork frame 2 is realized.

There is an oblique angle between the upper end surface of the snap ring 7.2 and the outer ring surface, the upper end of the snap ring 7.2 is in conflict with the side wall of the lower ring of the lower bearing 7, and the middle of the snap ring 7.2 is in contact with the lower end surface of the lower ring of the lower bearing 7 The interference makes the interference fixing between the snap ring 7.2 and the lower bearing 7 more tight and stable.

It should be noted that the lower bearing 7 located at the lower end of the frame barrel 1 can also be directly sleeved on the front fork frame 2, and the lower ring of the lower bearing 7 is in conflict with the stepped platform 2.2 of the front fork frame 2, which is also achieved at this time. The axial fixation of the frame tube 1 and the front fork frame 2 is achieved.

The present utility model has been introduced in detail above. The principles and implementations of the present invention are described herein by using specific examples, and the descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present utility model, some improvements and modifications can also be made to the present utility model, and these improvements and modifications also fall into the protection of the claims of the present utility model. within the range.

Claims

A front fork handlebar quick set structure of a bicycle frame, comprising a frame surface tube (1), a handlebar (3) and a front fork frame (2) sleeved on the frame surface tube (1), characterized in that the Both ends of the frame surface tube (1) are respectively provided with an upper bearing (6) and a lower bearing (7), and the upper end of the front fork frame (2) is protruded to the top of the upper bearing (6), so The upper end of the front fork frame (2) is detachably sleeved with a locking ring (5), the locking ring (5) is in contact with the upper part of the upper bearing (6), and the handlebar (3) is The lower end is provided with a cap (4), and the cap (4) is detachably connected with the locking ring (5) so that the handlebar (3) and the front fork frame (2) are fixed.
A bicycle frame front fork handlebar quick-set structure according to claim 1, characterized in that, the upper end surface of the front fork frame (2) is provided with a card slot (2.1), and the handlebar (3) is provided with a clamping groove (2.1). A locking piece (3.1) is connected to the lower end, and the lower end of the locking piece (3.1) is inserted into the locking groove (2.1).
A bicycle frame front fork handlebar quick-set structure according to claim 2, characterized in that a through hole for the handlebar (3) to pass through is provided in the middle of the cover cap (4), and the cover cap (4) (4) is located above the locking piece (3.1), and the cap (4) interferes with the locking piece (3.1).
A bicycle frame front fork handlebar quick-set structure according to claim 3, characterized in that a groove is provided on the bottom surface of the cover cap (4), and the groove bottom of the groove of the cover cap (4) is connected to the The upper end of the locking member (3.1) is in conflict, the groove wall of the groove of the cap (4) is provided with threads, and the inner ring wall of the locking ring (5) is threaded with the front fork frame (2) connection, the outer ring wall of the locking ring (5) is threadedly connected with the cap (4).
A bicycle frame front fork handlebar quick set structure according to claim 4, characterized in that the upper end of the outer ring wall of the locking ring (5) is provided with threads, and the locking ring (5) has a thread on the upper end. The lower end of the outer ring wall is provided with friction lines, and the outer side wall of the cover cap (4) is provided with friction lines.
A bicycle frame front fork handlebar quick set structure according to any one of claims 1-5, wherein the upper bearing (6) is a thrust bearing or a thrust radial bearing, and the locking ring (5) ) is in contact with the upper ring of the upper bearing (6), the bottom surface of the locking ring (5) is also provided with a protruding part (5.1), and the protruding part (5.1) is embedded in the between the upper ring of the upper bearing (6) and the front fork frame (2).
A bicycle frame front fork handlebar quick set structure according to claim 6, characterized in that it further comprises an upper backing ring (6.1), the lower part of the upper backing ring (6.1) is clamped on the frame surface On the upper end of the pipe (1), an accommodating groove is provided on the upper part of the upper backing ring (6.1), and the upper bearing (6) is installed in the accommodating groove of the upper backing ring (6.1).
A bicycle frame front fork handlebar quick set structure according to claim 7, characterized in that it further comprises a lower backing ring (7.1), and the upper part of the lower backing ring (7.1) is clamped to the frame surface At the lower end of the tube (1), an accommodating groove is provided at the lower part of the lower backing ring (7.1), the lower bearing (7) is installed in the accommodating groove of the lower backing ring (7.1), and the front fork bracket ( 2) A stepped platform (2.2) is provided at the position extending out to the lower end of the frame surface tube (1), and the stepped platform (2.2) is in conflict with the lower ring of the lower bearing (7).
A bicycle frame front fork handlebar quick set structure according to claim 7, characterized in that it further comprises a lower backing ring (7.1) and a snap ring (7.2), and the upper portion of the lower backing ring (7.1) is snap-connected At the lower end of the frame surface tube (1), an accommodating groove is provided at the lower part of the lower backing ring (7.1), and the lower bearing (7) is installed in the accommodating groove of the lower backing ring (7.1), A stepped platform (2.2) is provided at the position where the front fork frame (2) penetrates to the lower end of the frame surface tube (1), and the upper part of the snap ring (7.2) is clamped to the lower bearing (7) Between the front fork frame (2), the lower part of the snap ring (7.2) is clamped between the lower bearing (7) and the step platform (2.2).