A quick folding front fork mechanism for a power-assisted bicycle

Abstract

The invention relates to the technical field of front forks, and discloses a quick-folding front fork mechanism for a power-assisted bicycle, comprising an upper tube mechanism, and also comprising: a rotating mechanism, a double-shoulder mechanism, a stroke tube, a double barrel and a fork bridge, wherein the rotating mechanism comprises: a connecting column, a first rotating rod, a second rotating rod and a lower connecting column; the invention separates the bottom end of an upper tube body from the double-shoulder mechanism, so that the rotating mechanism is moved out of the upper tube body, rotates the first rotating rod to both sides along the pin at the bottom end of the upper connecting column, rotates the double-shoulder mechanism along the lower connecting column to keep the front wheel parallel to the frame, and then rotates the second rotating rod toward the rear of the frame along the pin at the bottom end of the first rotating rod to make the front wheel close to the side of the frame; or rotates the bottom pin of the first rotating rod toward the front of the frame, rotates the double-shoulder mechanism to make the front wheel parallel to the handlebar, and rotates the lower connecting column toward the top of the frame along the pin at the bottom end of the second rotating rod, so as to realize the folding of the power-assisted bicycle in multiple directions, which is beneficial to improving the activity of the front fork when folding, and reducing the space occupied by the power-assisted bicycle after folding.

Description

Technical Field

[0001] The invention relates to the technical field of front forks, and more particularly to a quick-folding front fork mechanism for a power-assisted bicycle. Background Art

[0002] Compared with fuel vehicles, power-assisted bicycles save resources, reduce carbon emissions, and avoid urban traffic congestion. They are ideal for urban commuting. As an important component of electric power-assisted bicycles, the front fork is located in the front part of the bicycle structure. Its upper end is connected to the handlebar component, the frame component cooperates with the front tube, and the lower end cooperates with the front axle component to form the bicycle's guidance system.

[0003] Deficiencies of existing technologies: In order to improve the comfort of the power-assisted bicycle during use, the front fork is often provided with a shock-absorbing component, and the shock-absorbing component is used to reduce shock and buffer during the driving of the power-assisted bicycle. At the same time, in order to facilitate the carrying of the power-assisted bicycle, the power-assisted bicycle is designed to be a foldable structure. However, the front fork with the shock-absorbing component is large in size, and the resistance wheel diameter is large. In addition, the existing front fork has a single folding direction when folding, and the handlebar of the power-assisted bicycle is perpendicular to the vehicle. Therefore, the front fork is often folded together with the front wheel to the rear of the power-assisted bicycle, and the function is single. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides a quick-folding front fork mechanism for a power-assisted bicycle to solve the problems existing in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a quick-folding front fork mechanism of a power-assisted bicycle, comprising an upper tube mechanism, and also comprising: a rotating mechanism, a double shoulder mechanism, a stroke tube, a double barrel and a fork bridge, the side inner wall of the rotating mechanism is movable with the side inner wall of the upper tube mechanism, the bottom end of the rotating mechanism is movably connected with the top end of the double shoulder mechanism, the top end of the stroke tube is fixed with the bottom end of the double shoulder mechanism by bolts, the side of the stroke tube is movably connected with the side inner wall of the double barrel, the side of the double barrel is fixedly connected with the side of the fork bridge, an oil spring shock-absorbing component is arranged inside the double barrel for connecting the bottom end of the stroke tube and the bottom inner wall of the double barrel, the upper tube mechanism comprises an upper tube body, the rotating mechanism comprises an upper connecting column, the side of the upper connecting column is movably connected with the side inner wall of the upper tube body, the bottom end of the upper connecting column is movably connected with a first rotating rod through a pin, the bottom end of the first rotating rod is movably connected with a second rotating rod through a pin, the side of the second rotating rod is movably connected with a lower connecting column, and the bottom end of the lower connecting column is movably sleeved with the top end of the double shoulder mechanism.

[0006] Furthermore, a limit block is provided at the top end of the upper connecting column, a side surface of the limit block is movably connected to an inner wall of a side surface of the upper connecting column, and a limit ring is provided at the bottom end of the upper tube body.

[0007] Furthermore, the double-shoulder mechanism includes a double-shoulder main body, which is provided with a positioning hole, the bottom end of the positioning hole is movably connected to the bottom end of the lower connecting column, and the bottom end of the upper tube main body is provided with a clamping block, which is a rectangular structure, and the side of the clamping block is engaged with the side of the positioning hole.

[0008] Furthermore, a second mounting hole is opened on the side of the positioning hole, a reset spring is fixedly connected to the side of the second mounting hole, a fixing pin is fixedly connected to the side of the reset spring, a fixing hole is opened on the side of the block corresponding to the position of the fixing pin, and the side of the fixing hole is meshed with the side of the fixing pin.

[0009] Furthermore, a power switch is fixedly connected to the side of the double-shoulder body, a power supply is provided inside the double-shoulder body, a first mounting hole is opened on the side of the second mounting hole, an electromagnet is fixedly connected to the side of the first mounting hole, a connecting rod is fixedly connected to the side of the fixing pin, and an iron sheet is fixedly connected to the side of the connecting rod.

[0010] Furthermore, a slope is provided on the side surface of the fixing pin relative to the position of the clamping block, and an arc angle is provided on the bottom end of the clamping block.

[0011] Furthermore, the rotation direction of the first rotating rod is perpendicular to the rotation direction of the second rotating rod, and the rotation direction of the second rotating rod is perpendicular to the rotation direction of the lower connecting column.

[0012] Technical effects and advantages of the present invention:

[0013] 1. The present invention separates the bottom end of the upper tube body from the double-shoulder mechanism, moves the rotating mechanism out of the upper tube body, rotates the first rotating rod toward both sides along the pin at the bottom end of the upper connecting column, staggers the front wheel and the frame, rotates the double-shoulder mechanism along the lower connecting column to keep the front wheel and the frame parallel, then rotates the second rotating rod toward the rear of the frame along the pin at the bottom end of the first rotating rod to make the front wheel close to the side of the frame, or rotates the bottom end pin of the first rotating rod toward the front of the frame, rotates the double-shoulder mechanism to make the front wheel parallel to the handlebar, rotates the lower connecting column toward the top of the frame along the pin at the bottom end of the second rotating rod, moves the front wheel to the handlebar position for folding, and realizes folding of the power-assisted bicycle in multiple directions, which is beneficial to improving the activity of the front fork when folding and reducing the space occupied by the power-assisted bicycle after folding.

[0014] 2. When the power-assisted bicycle is unfolded, the present invention retracts the rotating mechanism into the upper tube body, and inserts the clamping block into the positioning hole. The arc angle at the bottom of the clamping block contacts the inclined surface of the side surface of the fixing pin, thereby pushing the fixing pin into the second mounting hole. When the clamping block is completely inserted into the positioning hole, the reset spring pushes the fixing pin into the clamping block to limit the position. When the power-assisted bicycle needs to be folded, the power supply is controlled by the double-shoulder body to supply power to the electromagnet, so that the electromagnet generates magnetic force, thereby generating suction on the iron sheet, so that the connecting rod drives the fixing pin to move out of the fixing hole and retract into the second mounting hole, so that the clamping block can be moved out of the positioning hole. After that, the rotating mechanism is moved out of the upper tube mechanism, and the power-assisted bicycle is folded. The operation is simple and is conducive to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the overall folding structure of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the card block of the present invention;

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the card block of the present invention;

[0019] Figure 5 It is a schematic diagram of the double-shoulder mechanism structure of the present invention;

[0020] Figure 6 It is a schematic diagram of the cross-sectional structure of the double-shoulder mechanism of the present invention.

[0021] The accompanying drawings are marked as follows: 1. upper tube mechanism; 101. upper tube body; 102. block; 103. fixing hole; 104. arc angle; 105. limit ring; 2. rotating mechanism; 201. upper connecting column; 202. first rotating rod; 203. second rotating rod; 204. lower connecting column; 205. limit block; 3. double shoulder mechanism; 301. double shoulder body; 302. positioning hole; 303. fixing pin; 304. connecting rod; 305. electromagnet; 306. iron sheet; 307. first mounting hole; 308. return spring; 309. second mounting hole; 310. power switch; 4. travel tube; 5. double barrel; 6. fork bridge. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely illustrative. The power-assisted bicycle quick-folding front fork mechanism involved in the present invention is not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0023] Reference Figures 1 to 6 The present invention provides a quick-folding front fork mechanism for a power-assisted bicycle, comprising an upper tube mechanism 1, and further comprising: a rotating mechanism 2, a double-shoulder mechanism 3, a stroke tube 4, a double barrel 5 and a fork bridge 6. The side inner wall of the rotating mechanism 2 is movable with the side inner wall of the upper tube mechanism 1, the bottom end of the rotating mechanism 2 is movably connected with the top end of the double-shoulder mechanism 3, the top end of the stroke tube 4 is fixed with the bottom end of the double-shoulder mechanism 3 by bolts, the side of the stroke tube 4 is movably connected with the side inner wall of the double barrel 5, and the side of the double barrel 5 is fixedly connected with the side of the fork bridge 6 The double barrel 5 is provided with an oil spring shock-absorbing component inside, which is used to connect the bottom end of the stroke tube 4 and the inner wall of the bottom end of the double barrel 5. The upper tube mechanism 1 includes an upper tube body 101, and the rotating mechanism 2 includes an upper connecting column 201. The side of the upper connecting column 201 is movably connected to the inner wall of the side of the upper tube body 101. The bottom end of the upper connecting column 201 is movably connected to the first rotating rod 202 through a pin. The bottom end of the first rotating rod 202 is movably connected to the second rotating rod 203 through a pin. The side of the second rotating rod 203 is movably connected to There is a lower connecting column 204, the bottom end of the lower connecting column 204 is movably connected with the top end of the double shoulder mechanism 3, the upper tube body 101 passes through the frame and is installed by bolts, and is fixed to the handlebar of the power-assisted bicycle to ensure that the double shoulder mechanism 3 and the handlebar are perpendicular to each other, and the front wheel is installed at the bottom of the double barrel 5. When the power-assisted bicycle needs to be folded, the bottom end of the upper tube body 101 is separated from the double shoulder mechanism 3, so that the rotating mechanism 2 is moved out of the upper tube body 101, and the first rotating rod 202 is rotated to both sides along the bottom pin of the upper connecting column 201 to make the front wheel The wheels are staggered with the frame, and the double-shoulder mechanism 3 is rotated along the lower connecting column 204 to keep the front wheel parallel to the frame. Then, the second rotating rod 203 is rotated toward the rear of the frame along the pin at the bottom end of the first rotating rod 202 to make the front wheel close to the side of the frame, or the pin at the bottom end of the first rotating rod 202 is rotated toward the front of the frame, and the double-shoulder mechanism 3 is rotated to make the front wheel parallel to the handlebar, and the lower connecting column 204 is rotated toward the top of the frame along the pin at the bottom end of the second rotating rod 203 to move the front wheel to the handlebar position for folding, thereby realizing the folding of the power-assisted bicycle in multiple directions.

[0024] Among them, a limit block 205 is provided at the top of the upper connecting column 201, and the side of the limit block 205 is movably connected to the inner wall of the side of the upper connecting column 201. There is a limit ring 105 at the bottom end of the upper tube body 101. When the upper connecting column 201 moves to the bottom position of the upper tube body 101 inside the upper tube body 101, the limit ring 105 cooperates with the limit block 205 to limit the upper connecting column 201 to prevent the upper connecting column 201 from falling off from the upper tube body 101.

[0025] Among them, the double-shoulder mechanism 3 includes a double-shoulder body 301, which is provided with a positioning hole 302. The bottom end of the positioning hole 302 is movably connected with the bottom end of the lower connecting column 204. The bottom end of the upper tube body 101 is provided with a clamping block 102. The clamping block 102 is a rectangular structure. The side of the clamping block 102 is engaged with the side of the positioning hole 302. When the power-assisted bicycle is unfolded, the rotating mechanism 2 is completely retracted into the upper tube body 101, and the clamping block 102 at the bottom of the upper tube body 101 is embedded in the positioning hole 302. The user drives the upper tube body 101 to rotate through the handlebars, and the positioning hole 302 is engaged with the clamping block 102 to drive the double-shoulder body 301 to rotate, thereby realizing the rotation of the front wheel and the steering of the power-assisted bicycle.

[0026] Among them, a second mounting hole 309 is opened on the side of the positioning hole 302, a return spring 308 is fixedly connected to the side of the second mounting hole 309, a fixing pin 303 is fixedly connected to the side of the return spring 308, a fixing hole 103 is opened on the side of the block 102 corresponding to the position of the fixing pin 303, the side of the fixing hole 103 and the side of the fixing pin 303 are meshed with each other, when the block 102 is inserted into the positioning hole 302, the return spring 308 pushes the fixing pin 303 to insert into the block 102 to limit it, so as to prevent the block 102 from falling off from the positioning hole 302.

[0027] Among them, a power switch 310 is fixedly connected to the side of the double-shoulder body 301, a power supply is arranged inside the double-shoulder body 301, a first mounting hole 307 is opened on the side of the second mounting hole 309, an electromagnet 305 is fixedly connected to the side of the first mounting hole 307, a connecting rod 304 is fixedly connected to the side of the fixing pin 303, and an iron sheet 306 is fixedly connected to the side of the connecting rod 304. When the power-assisted vehicle needs to be folded, the power supply is controlled by the double-shoulder body 301 to supply power to the electromagnet 305, so that the electromagnet 305 generates magnetic force, thereby generating suction force on the iron sheet 306, so that the connecting rod 304 drives the fixing pin 303 to move out of the fixing hole 103 and retract into the second mounting hole 309, so as to facilitate the block 102 to move out of the positioning hole 302.

[0028] Among them, the side of the fixing pin 303 is provided with a slope corresponding to the position of the block 102, and the bottom end of the block 102 is provided with an arc corner 104. When the block 102 is inserted into the positioning hole 302, the arc corner 104 at the bottom of the block 102 contacts the side slope of the fixing pin 303, thereby pushing the fixing pin 303 into the second mounting hole 309, making it convenient for the block 102 to be inserted into the positioning hole 302.

[0029] The rotation direction of the first rotating rod 202 and the rotation direction of the second rotating rod 203 are perpendicular to each other, and the rotation direction of the second rotating rod 203 and the rotation direction of the lower connecting column 204 are perpendicular to each other.

[0030] The working principle of the present invention is as follows: the upper tube body 101 passes through the frame and is installed by bolts and fixed to the handlebar of the power-assisted bicycle. When the power-assisted bicycle is unfolded, the upper connecting column 201, the first rotating rod 202, the second rotating rod 203 and the lower connecting column 204 are in the same straight line, the front wheel is placed on the ground, and the frame is pushed downward to move the upper tube body 101 downward, so that the upper connecting column 201, the first rotating rod 202, the second rotating rod 203 and the lower connecting column 204 are retracted into the upper tube body 101, and the block 102 is inserted into the Inside the positioning hole 302, the arc corner 104 at the bottom of the block 102 contacts the side inclined surface of the fixing pin 303, thereby pushing the fixing pin 303 into the second mounting hole 309. When the block 102 is fully inserted into the positioning hole 302, the return spring 308 pushes the fixing pin 303 into the block 102 to limit the position, thereby preventing the block 102 from falling off from the positioning hole 302. At this time, the front wheel and the handlebar remain vertical, and the power-assisted bicycle is unfolded. When the power-assisted bicycle needs to be folded, the power supply is controlled by the shoulder body 301 to be electric. The magnet 305 is powered to generate magnetic force, thereby generating suction force on the iron sheet 306, so that the connecting rod 304 drives the fixing pin 303 to move out of the fixing hole 103 and retract into the second mounting hole 309, so that the block 102 can be easily moved out of the positioning hole 302, and the double-shoulder body 301 is pulled downward to make the rotating mechanism 2 move downward with the double-shoulder mechanism 3, and the upper connecting column 201, the first rotating rod 202, the second rotating rod 203 and the lower connecting column 204 are moved out of the upper tube body 101, and rotated to both sides along the bottom pin of the upper connecting column 201 The first rotating rod 202 makes the front wheel staggered with the frame, and the double-shoulder mechanism 3 is rotated along the lower connecting column 204 to keep the front wheel parallel to the frame. Then, the second rotating rod 203 is rotated toward the rear of the frame along the pin at the bottom end of the first rotating rod 202 to make the front wheel close to the side of the frame, or the bottom pin of the first rotating rod 202 is rotated toward the front of the frame, and the double-shoulder mechanism 3 is rotated to make the front wheel parallel to the handlebar, and the lower connecting column 204 is rotated toward the top of the frame along the bottom pin of the second rotating rod 203 to move the front wheel to the handlebar position for folding, thereby realizing the folding of the power-assisted bicycle in multiple directions.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick-folding front fork mechanism for a power-assisted bicycle, comprising an upper tube mechanism (1), characterized in that: Also includes: A rotating mechanism (2), a double shoulder mechanism (3), a stroke tube (4), a double barrel (5) and a fork bridge (6), wherein the side inner wall of the rotating mechanism (2) is movable with the side inner wall of the upper tube mechanism (1), the bottom end of the rotating mechanism (2) is movably connected with the top end of the double shoulder mechanism (3), the top end of the stroke tube (4) is fixed with the bottom end of the double shoulder mechanism (3) by bolts, the side of the stroke tube (4) is movably connected with the side inner wall of the double barrel (5), the side of the double barrel (5) is fixedly connected with the side of the fork bridge (6), and an oil spring shock-absorbing component is provided inside the double barrel (5) for connecting the bottom end of the stroke tube (4) and the double barrel (5). ), the upper tube mechanism (1) comprises an upper tube body (101), the rotating mechanism (2) comprises an upper connecting column (201), the side surface of the upper connecting column (201) is movably connected to the side inner wall of the upper tube body (101), the bottom end of the upper connecting column (201) is movably connected to a first rotating rod (202) through a pin, the bottom end of the first rotating rod (202) is movably connected to a second rotating rod (203) through a pin, the side surface of the second rotating rod (203) is movably connected to a lower connecting column (204), and the bottom end of the lower connecting column (204) is movably sleeved with the top end of the double shoulder mechanism (3).

2. A quick-folding front fork mechanism for a power-assisted bicycle according to claim 1, characterized in that: A limit block (205) is provided at the top end of the upper connecting column (201), and a side surface of the limit block (205) is movably connected to the inner wall of the side surface of the upper connecting column (201). A limit ring (105) is provided at the bottom end of the upper tube body (101).

3. The quick-folding front fork mechanism of a power-assisted bicycle according to claim 1, characterized in that: The double-shoulder mechanism (3) comprises a double-shoulder body (301), the double-shoulder body (301) is provided with a positioning hole (302), the bottom end of the positioning hole (302) is movably connected with the bottom end of the lower connecting column (204), and the bottom end of the upper tube body (101) is provided with a clamping block (102), the clamping block (102) is a rectangular structure, and the side surface of the clamping block (102) is meshed with the side surface of the positioning hole (302).

4. A quick-folding front fork mechanism for a power-assisted bicycle according to claim 3, characterized in that: A second mounting hole (309) is provided on the side of the positioning hole (302), a return spring (308) is fixedly connected to the side of the second mounting hole (309), a fixing pin (303) is fixedly connected to the side of the return spring (308), a fixing hole (103) is provided on the side of the block (102) at a position corresponding to the fixing pin (303), and the side of the fixing hole (103) is meshed with the side of the fixing pin (303).

5. The quick-folding front fork mechanism of a power-assisted bicycle according to claim 4, characterized in that: A power switch (310) is fixedly connected to the side of the double-shoulder body (301), a power supply is provided inside the double-shoulder body (301), a first mounting hole (307) is opened on the side of the second mounting hole (309), an electromagnet (305) is fixedly connected to the side of the first mounting hole (307), a connecting rod (304) is fixedly connected to the side of the fixing pin (303), and an iron sheet (306) is fixedly connected to the side of the connecting rod (304).

6. A quick-folding front fork mechanism for a power-assisted bicycle according to claim 5, characterized in that: The side surface of the fixing pin (303) is provided with an inclined surface corresponding to the position of the clamping block (102), and the bottom end of the clamping block (102) is provided with an arc corner (104).

7. The quick-folding front fork mechanism of a power-assisted bicycle according to claim 1, characterized in that: The rotation direction of the first rotating rod (202) and the rotation direction of the second rotating rod (203) are perpendicular to each other, and the rotation direction of the second rotating rod (203) and the rotation direction of the lower connecting column (204) are perpendicular to each other.

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