CN212890767U

CN212890767U - Front fork of bicycle

Info

Publication number: CN212890767U
Application number: CN202021493254.9U
Authority: CN
Inventors: 杨韦; 徐龙强
Original assignee: Taicang Guanglu Metal Products Co ltd
Current assignee: Taicang Guanglu Metal Products Co ltd
Priority date: 2020-07-25
Filing date: 2020-07-25
Publication date: 2021-04-06
Anticipated expiration: 2030-07-25

Abstract

The utility model discloses a bicycle front fork, which is applied in the field of bicycle parts and solves the technical problems that the connection mode of the front fork and a frame is complex and the front fork is difficult to disassemble, the technical proposal is that the bicycle front fork comprises a left fork arm and a right fork arm which are arranged in parallel, the upper ends of the left fork arm and the right fork arm are connected with a straight pipe, the lower end of the straight pipe is provided with a limit ring, the outer wall of the straight pipe above the limit ring is provided with a rotating bearing, the inner ring of the bearing is fixed with the outer wall of the straight pipe, the outer wall of the outer ring of the rotating bearing is provided with a plurality of limit beads, the limit beads extend along the length direction of the rotating bearing, the outer side of the rotating bearing is sleeved with a connecting sleeve, the inner side wall of the connecting sleeve is provided with a limit groove clamped with the limit, the outer wall of the straight pipe above, a limiting nut is screwed at the limiting thread of the straight pipe; has the technical effect that the front fork is convenient to disassemble.

Description

Front fork of bicycle

Technical Field

The utility model belongs to the technical field of the technique of bicycle part and specifically relates to a bicycle front fork is related to.

Background

The front fork component is positioned at the front part in the bicycle structure, the upper end of the front fork component is connected with the handlebar component, the frame component is matched with the front pipe, and the lower end of the front fork component is matched with the front shaft component to form a guide system of the bicycle. The steering of the bicycle can be changed by rotating the handlebar and the front fork, and the steering function of the bicycle is achieved.

The existing Chinese patent with the publication number of CN203255328U discloses a front fork, which comprises a left fork leg and a right fork leg, wherein the upper ends of the left fork leg and the right fork leg extend relatively to form a left front fork shoulder and a right front fork shoulder, the left front fork shoulder and the left fork leg are integrally formed to form a left fork, the right front fork shoulder and the right fork leg are integrally formed to form a right fork, the left fork and the right fork are symmetrical, the opposite side surfaces of the upper ends of the left front fork shoulder and the right front fork shoulder are both provided with grooves, the lower end of a front fork straight pipe is matched with the grooves of the left front fork shoulder and the right front fork shoulder, the left front fork shoulder and the right front fork shoulder are wrapped at the grooves and welded at the lower end of the front fork straight pipe, the lower end of the front fork straight pipe is completely wrapped in the grooves of the left front fork shoulder and the right front fork shoulder, the left front fork shoulder and the right front fork shoulder are connected at the opposite side surfaces of the upper ends of the left front fork shoulder and the right front fork shoulder to.

The above prior art solutions have the following drawbacks: in order to ensure the stability of the connection between the front fork and the frame, the connection mode between the front fork and the frame is complex, so that the front fork is difficult to disassemble.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bicycle front fork, its advantage is the front fork is convenient for dismantle.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a bicycle front fork, includes left yoke and right yoke, left side yoke and right yoke parallel arrangement, the upper end of left side yoke and right yoke is connected with the straight tube, the lower extreme of straight tube sets up the spacing ring, is located to be provided with rolling bearing on the straight tube outer wall of spacing ring top, the inner ring of bearing is fixed with the outer wall of straight tube, be provided with a plurality of spacing beads on rolling bearing's the outer ring outer wall, spacing bead extends the setting along rolling bearing length direction, rolling bearing's outside cover is equipped with the connecting sleeve, be provided with the spacing recess with spacing bead block on the connecting sleeve's the inside wall, be provided with limiting thread on the straight tube outer wall of rolling bearing top, limiting thread department of straight tube has connect stop nut soon.

Through above-mentioned technical scheme, connecting sleeve carries out the block through spacing recess and rolling bearing's spacing bead, and connecting sleeve is spacing on the straight tube through spacing ring and stop nut. Through the rotating bearing, the straight pipe can rotate in the connecting sleeve, so that the steering of the bicycle is realized. The frame is fixedly connected with the connecting sleeve, so that the frame is fixedly connected with the front fork. When the front fork needs to be disassembled, the front fork can be separated from the frame only by screwing the limiting nut off the straight pipe and then taking the connecting sleeve off the straight pipe, so that the front fork is more convenient to disassemble.

The utility model discloses further set up to: the upper ends of the left fork arm and the right fork arm are welded with the lower end of the straight pipe.

Through above-mentioned technical scheme, make left yoke and right yoke and straight tube fixed through the welded mode, make front fork integrated into one piece, improved the holistic stability of front fork, be convenient for dismantle the front fork simultaneously.

The utility model discloses further set up to: the lower end of the limiting thread and the upper end of the connecting sleeve are positioned on the same horizontal plane.

Through the technical scheme, the limiting nut can be fixed with the straight pipe through the limiting thread, when the limiting nut revolves to the lowest end of the limiting thread, the lower end of the limiting nut is contacted with the upper end of the connecting sleeve, the limiting nut plays a limiting role in the connecting sleeve, pressure is not generated on the connecting sleeve, the straight pipe can be driven to rotate together by the limiting nut when the straight pipe rotates, and the bicycle can be steered.

The utility model discloses further set up to: the lower extreme of stop nut is provided with the rubber gasket, the upper surface and the lower surface of rubber gasket set up to glossy plane.

Through above-mentioned technical scheme, the rubber gasket can prevent to take place the rust death between stop nut and the connecting sleeve, guarantees that the straight tube can carry out normal rotation, and the upper surface and the lower surface of rubber gasket all set up to glossy plane, make stop nut more be convenient for along with the straight tube together rotates.

The utility model discloses further set up to: the upper end of the limiting ring and the lower end face of the connecting sleeve are smooth planes.

Through above-mentioned technical scheme, when the straight tube rotated, the spacing ring can be along with the straight tube is together rotated, and the spacing ring is when rotating, and the upper end of spacing ring can produce the friction with connecting sleeve's lower extreme, and the upper end of spacing ring and connecting sleeve's lower terminal surface set up to glossy plane, can reduce the friction between spacing ring and the connecting sleeve, make the spacing ring more be convenient for along with the straight tube is together rotated.

The utility model discloses further set up to: the improved bicycle handlebar is characterized in that the straight tube is arranged to be a hollow tube, fixing threads are arranged on the inner side wall of the upper end of the straight tube, a handlebar is arranged at the upper end of the straight tube, a fixing rod is connected onto the handlebar, a fixing sleeve is connected to the tail end of the fixing rod, the inner diameter of the fixing sleeve is the same as the outer diameter of the straight tube, a fixing ring is arranged at the upper end of the inner wall of the fixing sleeve, the cross section shape of the fixing ring is the same as that of the straight tube, and a fixing bolt connected.

Through above-mentioned technical scheme, make handlebar and straight tube fixed through fixing bolt, be convenient for dismantle the handlebar from the straight tube to be convenient for dismantle front fork and frame.

The utility model discloses further set up to: the left fork arm and the right fork arm are set to be solid round rods.

Through above-mentioned technical scheme, make the support ability of left yoke and right yoke stronger to make the front fork whole more stable.

The utility model discloses further set up to: and the left fork arm and the right fork arm are both provided with mounting through holes.

Through the technical scheme, the front wheel can be installed at the installation through hole of the left fork arm and the right fork arm, so that the front wheel is convenient to detach, and the front fork is convenient to detach.

To sum up, the utility model discloses a beneficial technological effect does:

1. the front fork can be separated from the frame only by screwing the limiting nut off the straight pipe and then taking the connecting sleeve off the straight pipe, so that the front fork is more convenient to disassemble;

2. the rubber gasket can ensure that the straight pipe can normally rotate, so that the limiting nut can more conveniently rotate along with the straight pipe;

3. the handlebar and the straight tube are fixed through the fixing bolt, so that the handlebar is convenient to detach from the straight tube, and the front fork and the frame are convenient to detach.

Drawings

Fig. 1 is an overall configuration diagram of the present embodiment;

FIG. 2 is an exploded view of the present embodiment showing the connection of the connecting sleeve to the straight pipe;

FIG. 3 is an exploded view of the present embodiment for illustrating the connection between the handle bar and the straight tube.

Description of the drawings, 1, left yoke; 2. a right yoke; 3. a straight pipe; 4. a limiting ring; 5. a rotating bearing; 6. a limiting convex rib; 7. a connecting sleeve; 8. a limiting groove; 9. a limit nut; 10. a rubber gasket; 11. a handlebar; 12. fixing the rod; 13. fixing a sleeve; 14. a fixing ring; 15. fixing the bolt; 16. and installing the through hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1, for the utility model discloses a bicycle front fork, including left yoke 1 and right yoke 2, left yoke 1 and 2 parallel arrangement of right yoke, the upper end of left yoke 1 and right yoke 2 is provided with straight tube 3, and straight tube 3 sets up with left yoke 1 and right yoke 2 syntropy, makes the holistic stability of front fork better. The upper end of left yoke 1 and right yoke 2 welds with the lower extreme of straight tube 3, makes left yoke 1 and right yoke 2 and straight tube 3 integrative setting, makes the front fork more firm, is convenient for install the front fork simultaneously. Left yoke 1 and right yoke 2 set up to solid round bar, make left yoke 1 and right yoke 2's anti deformability stronger.

Referring to fig. 2, the lower end of the straight tube 3 is provided with a limiting ring 4, and the inner ring of the limiting ring 4 is welded and fixed with the outer wall of the straight tube 3. And a rotating bearing 5 is fixed on the outer wall of the straight pipe 3 above the limiting ring 4, and the inner ring of the rotating bearing 5 is welded and fixed with the outer wall of the straight pipe 3. A plurality of limiting convex ribs 6 are arranged on the outer wall of the outer ring of the rotating bearing 5, and the limiting convex ribs 6 extend along the length direction of the rotating bearing 5. The outside of rolling bearing 5 is equipped with connecting sleeve 7, is provided with spacing recess 8 on the inside wall of connecting sleeve 7. The length of the connecting sleeve 7 is the same as that of the rotating bearing 5, the connecting sleeve 7 is sleeved outside the rotating bearing 5, and the limiting groove 8 is clamped with the limiting convex rib 6, so that the connecting sleeve 7 can limit the rotation of the outer ring of the rotating bearing 5. Limiting threads are arranged on the outer wall of the straight pipe 3 above the rotating bearing 5, the lower end of each limiting thread and the upper end of the connecting sleeve 7 are located on the same horizontal plane, a limiting nut 9 is screwed at the limiting thread of the straight pipe 3, the limiting nut 9 is matched with the limiting ring 4 to limit the connecting sleeve 7, a fixing effect is not generated, and the straight pipe 3 can rotate in the connecting sleeve 7 through the inner ring of the rotating bearing 5. The lower extreme of nut is provided with rubber gasket 10, avoids taking place the corrosion between stop nut 9 and the connecting sleeve 7, forms the dismantlement. The upper surface and the lower surface of the rubber gasket 10 are smooth planes, so that the straight pipe 3 is prevented from being influenced to drive the limiting nut 9 to rotate together. The upper end of the limiting ring 4 and the lower end face of the connecting sleeve 7 are also set to be smooth planes, so that the straight pipe 3 can rotate more smoothly when the limiting ring 4 is driven to rotate together.

Referring to fig. 2 and 3, the straight tube 3 is a hollow tube, a fixing thread is provided on an inner sidewall of an upper end of the straight tube 3, and a handle bar 11 is provided at an upper end of the straight tube 3. The handlebar 11 is connected with a fixed rod 12, the tail end of the fixed rod 12 is connected with a fixed sleeve 13, and the inner diameter of the fixed sleeve 13 is the same as the outer diameter of the straight pipe 3. The fixed sleeve 13 is sleeved outside the straight pipe 3, and the inner side wall of the fixed sleeve 13 is attached to the outer side wall of the straight pipe 3. The upper end of the inner wall of the fixed sleeve 13 is provided with a fixed ring 14, the cross section of the fixed ring 14 is the same as that of the straight pipe 3, and the lower end of the fixed ring 14 is attached to the upper end face of the straight pipe 3. The fixing bolt 15 is inserted into the fixing sleeve 13, the shape and the size of the cross section of the nut of the fixing bolt 15 are larger than those of the cross section of the inner ring of the fixing ring 14, the position of the handlebar 11 is adjusted, and the fixing bolt 15 is screwed into the fixing thread on the inner side wall of the straight pipe 3, so that the handlebar 11 is fixed with the straight pipe 3. The lower extreme welding of straight tube 3 has left yoke 1 and right yoke 2, all is provided with the installation through-hole on left yoke 1 and the right yoke 2, can be to the installation bicycle front wheel between left yoke 1 and the right yoke 2 through the installation through-hole. When rotating handlebar 11, straight tube 3 can be along with rotating to the bicycle front wheel of installing between left yoke 1 and right yoke 2 is rotated in the drive, realizes turning to of bicycle. And then the frame and the connecting sleeve 7 are welded to assemble the bicycle.

The implementation principle of the embodiment is as follows: bicycle frame and adapter sleeve 7 welding, adapter sleeve 7 carries out the block through spacing groove 8 and rolling bearing 5's spacing bead 6, and adapter sleeve 7 is spacing on straight tube 3 through spacing ring 4 and stop nut 9, and handlebar 11 of straight tube 3 upper end is fixed on straight tube 3 through fixing bolt 15. When the front fork needs to be disassembled, the handlebar 11 can be taken down only by screwing down the fixing bolt 15 and then the limiting nut 9 is screwed down to separate the front fork from the connecting sleeve 7 welded on the frame, so that the front fork is easier to disassemble from the frame.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The bicycle front fork is characterized by comprising a left fork arm (1) and a right fork arm (2), wherein the left fork arm (1) and the right fork arm (2) are arranged in parallel, the upper ends of the left fork arm (1) and the right fork arm (2) are connected with straight pipes (3), the lower ends of the straight pipes (3) are provided with limit rings (4), the outer wall of the straight pipe (3) above the limit rings (4) is provided with a rotating bearing (5), the inner ring of the bearing is fixed with the outer wall of the straight pipe (3), the outer ring outer wall of the rotating bearing (5) is provided with a plurality of limit convex edges (6), the limit convex edges (6) extend along the length direction of the rotating bearing (5), the outer side of the rotating bearing (5) is sleeved with a connecting sleeve (7), the inner side wall of the connecting sleeve (7) is provided with limit grooves (8) clamped with the limit convex edges (6), and the outer wall of the straight pipe (3) above the rotating bearing (5) is provided with a limiting thread, and the limiting thread of the straight pipe (3) is screwed with a limiting nut (9).

2. A bicycle fork according to claim 1, characterised in that the upper ends of the left fork arm (1) and the right fork arm (2) are welded to the lower end of the straight tube (3).

3. A bicycle fork according to claim 1, characterised in that the lower end of the limit thread is located on the same horizontal plane as the upper end of the connecting sleeve (7).

4. A bicycle fork according to claim 1, characterised in that the lower end of the limit nut (9) is provided with a rubber gasket (10), the upper and lower surfaces of the rubber gasket (10) being provided with smooth surfaces.

5. A bicycle fork according to claim 1, characterised in that the upper end of the stop collar (4) and the lower end face of the connecting sleeve (7) are provided as smooth planes.

6. The bicycle front fork according to claim 1, characterized in that the straight tube (3) is configured as a hollow tube, a fixing thread is arranged on the inner side wall of the upper end of the straight tube (3), a handlebar (11) is arranged at the upper end of the straight tube (3), a fixing rod (12) is connected to the handlebar (11), a fixing sleeve (13) is connected to the end of the fixing rod (12), the inner diameter of the fixing sleeve (13) is the same as the outer diameter of the straight tube (3), a fixing ring (14) is arranged at the upper end of the inner wall of the fixing sleeve (13), the size of the cross section of the fixing ring (14) is the same as that of the cross section of the straight tube (3), and a fixing bolt (15) screwed with the fixing thread is inserted into the fixing sleeve.

7. A bicycle fork according to claim 1, characterised in that the left fork arm (1) and the right fork arm (2) are provided as solid round bars.

8. A bicycle fork according to claim 7, characterised in that the left fork arm (1) and the right fork arm (2) are provided with mounting through holes.