CN220465693U - Folding linkage self-locking bicycle frame - Google Patents
Folding linkage self-locking bicycle frame Download PDFInfo
- Publication number
- CN220465693U CN220465693U CN202322035840.9U CN202322035840U CN220465693U CN 220465693 U CN220465693 U CN 220465693U CN 202322035840 U CN202322035840 U CN 202322035840U CN 220465693 U CN220465693 U CN 220465693U
- Authority
- CN
- China
- Prior art keywords
- connecting piece
- locking
- linkage
- folding
- hinged
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004458 analytical method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000012916 structural analysis Methods 0.000 description 1
Landscapes
- Motorcycle And Bicycle Frame (AREA)
Abstract
The utility model belongs to the technical field of bicycle structures, and particularly relates to a folding linkage self-locking bicycle frame, wherein a steering shaft is hinged to a handlebar rod through a handlebar folding box, a front wheel is hinged to the lower part of a front fork through a front shaft hinge part, a first linkage connecting piece and a second linkage connecting piece are hinged to a steering shaft connecting piece and a rear fork in a crossing manner, a folding steering shaft on the steering shaft connecting piece is hinged to a rear folding steering shaft connecting part at the rear end of a head pipe connecting piece, a rear wheel is hinged to the rear fork through a rear shaft hinge part, a locking groove below a seat riser is meshed with a locking shaft at the rear end of the first linkage connecting piece to lock a seat upright post to form a part of a self-locking structure, the rear end of the head pipe connecting piece is meshed with a front end contact surface of the second linkage connecting piece to be propped against each other so that the rear end of the head pipe connecting piece cannot rotate to form the other part of the self-locking structure, a magnet is arranged on one side of the rear shaft hinge part and is in a side of the front shaft hinge part to absorb and lock a folding state, a quick-release locking state is assisted by a quick handle, and a driving device is arranged below the locking shaft on the first linkage connecting piece.
Description
Technical Field
The utility model belongs to a bicycle in a vehicle, and particularly relates to a folding linkage self-locking bicycle frame.
Background
The folding bicycle in the prior art is small and exquisite, flexible and convenient to go out, and is accepted by society, because the folding lock catches of the common folding bicycle are more opened one by one, the hinge structure of the folding time is more complicated, and the occupied space is large and looks irregular.
In order to solve the defects, the utility model designs a folding bicycle with a self-locking structure, and the folding bicycle is regular in shape after folding.
Disclosure of Invention
The utility model aims to overcome the technical defects and provides a folding linkage self-locking bicycle frame.
The technical scheme adopted by the utility model is as follows: a folding linkage self-locking bicycle frame comprises a handlebar, a handlebar rod folding box, a steering shaft connecting piece, a head pipe connecting piece, a linkage connecting piece I, a linkage connecting piece II, a saddle vertical pipe, a front fork, a rear fork, a front wheel, a rear wheel, a driving structure and a self-locking structure;
the upper part of the folding box of the handle bar is fixedly connected with the handle bar, the upper part of the handle bar is hinged with the handle bar, and the upper part of the folding box is hinged with the lower part of the folding box of the handle bar through a shaft.
The front end of the head pipe connecting piece is fixedly connected with a steering shaft sleeve, the rear end of the head pipe connecting piece is fixedly connected with a folding steering shaft connecting part, and contact surfaces meshed with the two front ends of the linkage connecting pieces are arranged on two sides of the folding steering shaft connecting part to limit the rotation of the head pipe connecting piece.
The two ends of the first linkage connecting piece are fixedly connected with connecting holes, a locking shaft is fixedly connected in front of the connecting holes at the rear end of the first linkage connecting piece, and a middle shaft connecting part is fixedly connected below the locking shaft.
And connecting holes are fixedly connected at two ends of the second linkage connecting piece, and contact surfaces are arranged at two sides of the contact end of the second linkage connecting piece and the head pipe connecting piece to limit the head pipe connecting piece to rotate on the folding steering shaft.
The lower part of the seat post is fixedly connected with a seat post connecting part, the upper part of the seat post can be hinged with the seat in a sliding way, and the lower part of the seat post connecting part is fixedly connected with a locking groove which is meshed with a locking shaft at the rear end of the linkage connecting piece.
The front fork below articulates the front wheel through front axle articulated part, front fork top fixedly connected with steering spindle, steering spindle top articulates the folding box lower part bottom of handlebar pole, front axle articulated part one side is equipped with magnet.
The rear end of the rear fork is hinged with the rear wheel through a rear shaft hinge part, the front end of the rear fork is fixedly connected with a hinge hole III, the rear part of the hinge hole III at the front end of the rear fork is fixedly connected with a hinge hole IV, and one side of the rear shaft hinge part is provided with a magnet which is mutually adsorbed and locked in a folding state with one side of the front shaft hinge part.
The steering shaft connecting piece is fixedly connected with a first hinge hole above, a second hinge hole below and a folding steering shaft in the middle.
The self-locking structure is formed by locking the saddle stand pipe and the head pipe connecting piece through the engagement of the locking groove and the locking shaft.
And the three sides of the hinge hole are hinged with the quick-release handle to assist in locking the saddle stand pipe.
The driving structure consists of a chain, a large crutch, a flywheel, a middle shaft, a wheel disc, a pedal, and the like;
the driving structure comprises: such as belt drives, motor drives, propeller shafts, sprocket and chain drive drives, etc.
The beneficial effects of the utility model are as follows: the locking groove and the locking shaft are meshed to lock the vertical pipe of the saddle to rotate longitudinally and simultaneously the locking head pipe is connected to rotate left and right and rotate longitudinally in a riding state, the locking in the folding state is realized by mutual adsorption and locking of a magnet on one side of a front shaft hinge part and a magnet on one side of a rear shaft hinge part, the whole bicycle is folded and is folded continuously, the shape is regular, the whole bicycle can be pulled away after being folded, a building with steps can be pulled up, the bicycle is suitable for being placed in a room or a car trunk when various people do not use, and the bicycle is simple in structure, light in weight, low in production cost and small in occupied space, as shown in the figure.
Drawings
In order to make the technical scheme of the present utility model more clear, the present utility model is further described with reference to the following embodiments and the accompanying drawings.
Fig. 1 is a structural analysis diagram of a main body frame.
Fig. 2 is a partial self-locking structural resolution.
Fig. 3 is a drawing or pushing analysis chart after folding.
Fig. 4 is a fully folded view.
Fig. 5 is a back fork analysis diagram.
Fig. 6 is a front fork analysis diagram.
Fig. 7 is an exploded view of the head pipe connection.
Fig. 8 is an exploded view of the seat tube.
Fig. 9 is an exploded view of the steering shaft connector.
Fig. 10 is an exploded view of the linkage connector.
Fig. 11 is a second analysis view of the linkage connector.
FIG. 12 is a view showing the resolution of the auxiliary locking of the quick release handle in the riding state.
Fig. 13 is an incompletely folded state analysis diagram.
In the figure, the 1-head pipe connecting piece, the 1-1-folding steering shaft connecting part, the 1-2-steering shaft sleeve, the 2-linkage connecting piece I, the 2-1-locking shaft, the 2-2-center shaft connecting part, the 3-linkage connecting piece II, the 4-rear fork, the 4-1-hinging hole III, the 4-2-hinging hole IV, the 4-3-rear shaft hinging part, the 6-front fork, the 6-1-steering shaft, the lower part of the 6-2-handlebar folding box, the 6-3-front shaft hinging part, the 7-handlebar, the upper part of the 7-1-handlebar folding box, the 8-handlebar, the 9-saddle riser, the 9-1-saddle riser connecting part, the 9-2-locking groove, the 10-saddle, the 11-steering shaft connecting piece, the 11-1-hinging hole I, the 11-2-hinging hole II, the 11-3-folding steering shaft, the 12-front wheel, the 13-rear wheel and the 14-quick-dismantling handle.
Detailed Description
The utility model will be further elucidated with reference to the embodiments with reference to the accompanying drawings.
Referring to the drawings, a folding linkage self-locking bicycle frame comprises: the hinge hole I11-1 on the steering shaft connecting piece 11 is rotatably hinged with the front end connecting hole of the linkage connecting piece I2, the rear end connecting hole of the linkage connecting piece I2 is rotatably hinged with the hinge hole IV 4-2 on the rear fork 4, the hinge hole III 4-1 on the rear fork 4 is rotatably hinged with one end connecting hole of the linkage connecting piece II 3, the other end connecting hole of the linkage connecting piece II 3 is rotatably hinged with the hinge hole II 11-2 on the steering shaft connecting piece 11, and the rear end of the rear fork 4 is hinged with the rear wheel 13 through the rear shaft hinge part 4-3;
the two linkage connecting pieces are hinged with the rear fork 4 and the steering shaft connecting piece 11 in a crossed mode to form a four-bar structure, the four-bar structure is hinged with the linkage frame to enable the self-locking structure to be coherent in folding or unfolding action, the four-bar structure only locks the whole four-bar structure at one hinge point to form a fixed structure, the crossing positions of the two linkage connecting pieces are not interfered with each other, the hinge position of the rear fork 4 and the steering shaft connecting piece 11 is adjusted according to the hinge mode of the two linkage connecting pieces, and the hinge mode of the seat upright tube 9 is also adjusted according to the two linkage connecting pieces.
The folding steering shaft 11-3 on the steering shaft connecting piece 11 is hinged with the folding steering shaft connecting part 1-1 at the rear end of the head pipe connecting piece 1 in a left-right rotating way, the steering shaft sleeve 1-2 at the front end of the head pipe connecting piece 1 is hinged with the steering shaft 6-1 above the front fork 6 in a left-right rotating way, and the lower part of the front fork 6 is hinged with the front wheel 12 through the front shaft hinging part 6-3;
the rear end of the head pipe connecting piece 1 is meshed with the equal width part of the front end of the linkage connecting piece II 3 and is tightly propped, when the bicycle is folded, the hinge hole II 11-2 is used as the axis to rotate forwards, the steering shaft connecting piece 11 is used for linking the head pipe connecting piece 1 to the equal width meshing part to be separated and can rotate left and right, the head pipe connecting piece 1 is used for linking the front fork 6 and the front wheel 12 to one side, the position of the front wheel 12 is released, and the rear fork 4 and the rear wheel 13 are linked to be parallel to the front wheel through a longitudinal rotation four-bar structure.
The upper part of the steering shaft 6-1 is hinged with the bottom end of the lower part 6-2 of the handle bar folding box, the lower part of the handle bar 7 is hinged with the upper part 7-1 of the handle bar folding lock, the upper part of the handle bar 7 is hinged with the handle bar 8, and the upper part 7-1 of the handle bar folding box below the handle bar 7 is hinged with the lower part 6-2 of the handle bar folding box through the shaft;
the handle bar 7 can be folded to the left and right sides of the bicycle frame and comprises forward rotation folding, and the handle bar folding box is the prior art and is commonly used for locking the bicycle main frame transversely and locking the bicycle handle vertical folding part.
A saddle 10 is hinged above the saddle stand pipe 9, and a saddle stand pipe connecting part 9-1 below the saddle stand pipe 9 is hinged with a hinge hole three 4-1 through a shaft;
the locking of the seat post 9 is that the seat post 9 cannot longitudinally rotate due to the fact that the locking groove 9-2 below the seat post 9 is meshed with the locking shaft 2-1, and the four-bar structure is not rotated after the locking groove 9-2 below the seat post 9 is meshed with the locking shaft 2-1.
One side of the hinge hole III 4-1 is hinged with a quick release handle 14 to assist in locking the seat post 9 and the four-bar structure;
the quick-release handle 14 is commonly used for adjusting the height of the saddle 10, adjusting the height of the stand, and the like in the prior art;
the quick-release handle 14 is arranged to lock the saddle stand pipe 9 in a pulling state, so that the phenomenon of loosening of a frame does not occur even if the quick-release handle 14 is not arranged in a riding state;
the quick-release handle 14 locks the saddle stand pipe 9 in a pulling state or a pushing state and is used for assisting in locking a four-bar structure, and the four-bar structure mainly locks the saddle 10 to tightly engage the locking groove 9-2 with the locking shaft 2-1 by pressing down the saddle 10 when riding;
the quick release handle 14 assists in locking the four bar linkage structure equal to the locking assist in locking the folded state and the riding state.
A magnet is arranged on one side of the rear shaft hinge part 4-3 and is mutually adsorbed and locked in a folded state with a magnet on one side of the front shaft hinge part 6-3;
the magnets are not depicted in the drawings of the specification.
The self-locking structure is that a locking shaft 2-1 at the rear end of a first linkage connecting piece 2 is meshed with a locking groove 9-2 below a saddle stand pipe 9 to lock the saddle stand pipe 9 to rotate longitudinally to form a part of the self-locking structure, and the equal width part of the rear end of a riding state head pipe connecting piece 1 is meshed with the contact surface of the equal width part of the front end of a second linkage connecting piece 3 to be coupled and tightly pressed, so that the head pipe connecting piece 1 cannot rotate left and right and rotate longitudinally to form the other part of the self-locking structure;
the saddle vertical pipe 9 in the riding state presses down the rear fork 4 to link the hinge hole III 4-1 and the hinge hole IV 4-2 to apply force upwards, the force of the saddle vertical pipe 9 in the riding state pressing down the rear fork 4 is fed back to the locking groove 9-2 and the locking shaft 2-1 between the hinge hole III 4-1 and the hinge hole IV 4-2, the four-bar linkage structure and the saddle vertical pipe 9 do not rotate longitudinally after the locking groove 9-2 and the locking shaft 2-1 are meshed mutually, and the steering shaft connecting piece 11 does not rotate upwards on the linkage head pipe connecting piece 1, so that the whole bicycle frame is locked by the self-locking structure.
The driving structure is composed of a middle shaft connecting part 2-2 hinged with a middle shaft and the like below the locking shaft 2-1;
the driving structure comprises: the chain sprocket drive, belt drive, drive shaft drive, motor drive, chain sprocket drive includes chain, rim plate, large crutch, pedal, flywheel, middle shaft, bearing, the specific parts of the drive device are not described in the drawings of the utility model.
The connection of articulated portion, connecting hole, hinge hole, connecting portion: the shaft, the pin shaft and the screw shaft are hinged, and the middle shaft and the steering shaft 9-1 are hinged through a shaft sleeve, a bearing and the like.
The working principle of the folding linkage self-locking bicycle frame is as follows: the quick release handle 14 is opened under the riding state to lift the saddle 10 upwards to one side of the rotatable head pipe connecting piece 1, the rotatable head pipe connecting piece 1 drives the front wheel 12 of the front fork 6 to one side, the position of the front wheel 12 is yielded to facilitate the longitudinal rotation of the frame, the linkage rear wheel 13 is inserted to enable the rear wheel 13 and the front wheel 12 to be gathered and adsorbed together in parallel to lock the folding state, the rear part of the saddle 10 is close to the rear wheel 13, at the moment, the handlebar folding lock is opened to rotate to one side of the main frame or the other side of the main frame comprises the front of the frame, and the unfolding is sequentially completed.
Claims (2)
1. The utility model provides a folding linkage auto-lock bicycle frame, includes handlebar stem (7), saddle riser (9), rear fork (4), front wheel (12), rear wheel (13), drive arrangement, front fork (6), its characterized in that: the steering device comprises a steering shaft connecting piece (11), a self-locking structure, a head pipe connecting piece (1), a first linkage connecting piece (2) and a second linkage connecting piece (3), wherein a first hinge hole (11-1) on the steering shaft connecting piece (11) is hinged to the front end of the first linkage connecting piece (2), a fourth hinge hole (4-2) is hinged to the other end of the first linkage connecting piece (2), a third hinge hole (4-1) is hinged to one end of the second linkage connecting piece (3), a second hinge hole (11-2) is hinged to the other end of the second linkage connecting piece (3), and a folding steering shaft (11-3) on the steering shaft connecting piece (11) is hinged to a folding steering shaft connecting portion (1-1) at the rear end of the head pipe connecting piece (1).
2. The folding linkage self-locking bicycle frame according to claim 1, wherein the locking groove (9-2) below the saddle vertical tube (9) and the locking shaft (2-1) at the rear end of the linkage connecting piece I (2) are meshed with each other to lock the saddle vertical tube (9) to form one part of the self-locking structure, and the rear end of the head tube connecting piece (1) and the front end contact surface of the linkage connecting piece II (3) are meshed with each other to tightly push the same so that the same cannot rotate to form the other part of the self-locking structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321936374 | 2023-07-22 | ||
| CN2023219363745 | 2023-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220465693U true CN220465693U (en) | 2024-02-09 |
Family
ID=89803904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322035840.9U Active CN220465693U (en) | 2023-07-22 | 2023-08-01 | Folding linkage self-locking bicycle frame |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220465693U (en) |
-
2023
- 2023-08-01 CN CN202322035840.9U patent/CN220465693U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2012152069A1 (en) | Box-shaped foldable electric bicycle | |
| WO2011082515A1 (en) | Foldable pedaling bicycle | |
| CN220465693U (en) | Folding linkage self-locking bicycle frame | |
| CN102442393B (en) | Pedal scooter | |
| CN201842192U (en) | Box-shaped folding bicycle | |
| CN201220724Y (en) | Foldable bicycle | |
| CN104210598A (en) | Foldable bicycle | |
| CN118062146A (en) | Folding linkage self-locking bicycle frame | |
| CN118083021A (en) | Three-wheeled folding self-locking bicycle frame with self-balancing device | |
| WO2022242208A1 (en) | Folding linkage bicycle frame | |
| CN201808634U (en) | Multipurpose folding bicycle | |
| CN2832646Y (en) | Folding bicycle for leisure | |
| CN217515317U (en) | Folding linkage bicycle frame | |
| CN202827931U (en) | Folding bicycle | |
| CN201317436Y (en) | Case-type folding electric bicycle | |
| CN202429309U (en) | Seated type tread scooter | |
| CN2774915Y (en) | Folding bicycle goods rack for two purpose vehicle | |
| CN211442636U (en) | Light folding bicycle | |
| CN202283971U (en) | Pedal scooter | |
| CN219215264U (en) | Folding mechanism of cross-country scooter | |
| CN217918248U (en) | Foldable three-wheeled electric vehicle | |
| CN86206129U (en) | Portable double-foldable bicycle | |
| CN102351026A (en) | Sitting type pedal scooter | |
| CN201670318U (en) | Three-wheel folding bicycle capable of being transformed into seat | |
| CN201525451U (en) | foldable three-wheel scooter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |