CN106741449B - Rotating assembly and folding vehicle - Google Patents
Rotating assembly and folding vehicle Download PDFInfo
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- CN106741449B CN106741449B CN201611128965.4A CN201611128965A CN106741449B CN 106741449 B CN106741449 B CN 106741449B CN 201611128965 A CN201611128965 A CN 201611128965A CN 106741449 B CN106741449 B CN 106741449B
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- rotating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K15/00—Collapsible or foldable cycles
- B62K15/006—Collapsible or foldable cycles the frame being foldable
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- Motorcycle And Bicycle Frame (AREA)
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Abstract
The invention discloses a rotating assembly, comprising: the rotary gear shaft, the rotary gear ring which is rotatably connected to the rotary gear shaft and the end cover which is fixedly connected to one end of the rotary gear shaft; wherein, the cylindrical surface of the rotating gear shaft is provided with a rotating track; the rotating gear ring is provided with a track matching structure matched with the rotating track, and the rotating gear ring rotates relative to the rotating gear shaft through the matching of the track matching structure and the rotating track and moves axially on the rotating gear shaft. The invention also provides a folding trolley. Through the rotating assembly, the centers of the front wheel and the rear wheel of the folding bicycle can be overlapped together, so that the folding bicycle is folded, the size of the folding bicycle is reduced, the occupied space of the folding bicycle is reduced, and the folding bicycle is convenient to carry.
Description
Technical Field
The invention relates to the technical field of folding vehicles, in particular to a rotating assembly and a folding vehicle.
Background
Along with the development of society and the increasingly congested traffic, people have more and more demand on folding cars, and the demand on folding cars is higher and higher, and lightweight and portability become a trend of the development of folding cars, so that the use of folding cars is more and more.
In the prior art, a folding vehicle is generally folded by a hinge, namely a hinge folding structure is arranged between a front frame and a rear frame of the folding vehicle, and the front frame and the rear frame of the folding vehicle are folded together by the folding structure; however, the folding cart folded in this way is still very bulky and inconvenient to carry.
Disclosure of Invention
The invention provides a rotating assembly and a folding bicycle, and aims to solve the problem that the folding bicycle is inconvenient to carry.
In order to solve the technical problems, the invention adopts a technical scheme that: providing a rotating assembly comprising: the rotary gear shaft, the rotary gear ring which is rotatably connected to the rotary gear shaft and the end cover which is fixedly connected to one end of the rotary gear shaft are arranged on the rotary gear shaft; the cylindrical surface of the rotating gear shaft is provided with a rotating track; the rotary toothed ring is provided with a track matching structure matched with the rotary track, and the rotary toothed ring rotates relative to the rotary toothed shaft through the matching of the track matching structure and the rotary track and moves axially on the rotary toothed shaft.
Wherein the rotation track comprises an axial rotation track and a radial rotation track; the inner side surface of the rotary gear ring is provided with a track matching structure matched with the axial and radial rotary tracks; the rotating toothed ring is matched with the axial rotating track and the radial rotating track through the track matching structure, so that the rotating toothed ring rotates relative to the rotating toothed shaft and moves axially on the rotating toothed shaft.
Wherein the rotary ring gear rotates relative to the rotary pinion and moves a predetermined distance in the axial direction of the rotary pinion when moving from one end to the other end of the axial rotary track by the track fitting structure.
Wherein the rotary ring gear rotates by a predetermined angle with respect to the rotary pinion shaft when the rotary ring gear moves from one end to the other end of the radial rotary track by the track fitting structure.
The end cover is connected to the rotating gear shaft through the connecting piece.
The connecting piece is a connecting bolt, a threaded hole is formed in the rotary gear shaft, a through hole is formed in the end cover, and the connecting bolt penetrates through the through hole to be connected with the threaded hole in a matched mode.
The track matching structure is a thread structure, is uniformly distributed on the inner side surface of the rotating gear ring, and is the same as the rotating tracks in quantity, and the rotating tracks are uniformly distributed on the cylindrical surface of the rotating gear shaft.
The axial rotating track is a half thread groove which is formed from one end, connected with the end cover, of the rotating gear shaft, and the thread structure is meshed with the half thread groove; the radial rotating track is a clamping groove communicated with the starting end of the axial rotating track; the clamping groove is provided with an axial limiting surface and a radial limiting surface, the distance between the axial limiting surface and the starting end is the same as that between the axial limiting surface and the end surface of the thread structure, and the radial limiting surface limits the rotary gear ring to continue to move radially.
In order to solve the technical problem, the invention adopts another technical scheme that: the folding bicycle comprises a rotating assembly, a front frame, a rear frame, a front wheel, a rear wheel and a locking piece, wherein the rotating assembly is the rotating assembly.
Wherein, the folding bicycle is a folding bicycle or a folding electric bicycle.
The invention has the beneficial effects that: different from the prior art, the invention provides the rotating assembly, and the folding bicycle can enable the front wheels and the rear wheels to be in a parallel and overlapped state through the rotating assembly in a mode that the rotating gear ring performs axial and radial rotating motion on the cylindrical surface of the rotating gear shaft, so that the size of the folding bicycle is reduced, the occupied space is reduced, and the folding bicycle is convenient to carry.
Drawings
FIG. 1 is a perspective view of a rotary assembly provided by an embodiment of the present invention;
FIG. 2 is an exploded view of a rotary assembly according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of the rotary gear shaft and end cap of the rotary assembly of FIG. 2;
FIG. 4 is a schematic view of the rotating ring structure of the rotating assembly of FIG. 2;
FIG. 5 is a schematic assembled cross-sectional view of a rotating assembly provided by an embodiment of the present invention;
fig. 6 is a schematic structural view of the folding cart provided by the embodiment of the invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes a rotating assembly and a folding cart provided by the present invention in further detail with reference to the accompanying drawings and the detailed description.
Referring to fig. 1 and 2, the rotating assembly of the present invention includes: the rotary gear shaft 12, the rotary gear ring 14 rotatably connected to the rotary gear shaft 12, and the end cap 16 fixedly connected to one end of the rotary gear shaft 12.
The rotating gear shaft 12 is disposed in a cylindrical shape, and the cylindrical surface thereof is provided with uniformly distributed rotating tracks, which include an axial rotating track 122 and a radial rotating track 124. It should be noted that the axial rotation track 122 and the radial rotation track 124 are both groove structures in the embodiment of the present invention.
The axial rotation track 122 is a half thread groove starting from one end of the rotary toothed shaft 12, and specifically, the axial rotation track 122 is a half thread groove starting from the right end face of the rotary toothed shaft 12, that is, the face close to the end cover 16.
The radial rotation track 124 is a slot communicated with the starting end of the axial rotation track 122, and specifically, the radial rotation track 124 is a slot communicated with the right end of the axial rotation track 122.
Specifically, the radial rotation track 124 is provided with an axial limiting surface 1242 and a radial limiting surface 1244, and the axial limiting surface 1242 is parallel to the right end surface of the rotation gear shaft 12.
Referring to fig. 3, the rotary gear shaft 12 is further provided with an accommodating space 126 and a threaded hole 128 communicating with the accommodating space 126.
Referring to fig. 2 and 4, the rotating ring gear 14 is disposed in a circular ring shape, and has a central hole sleeved on the cylindrical surface of the rotating shaft gear 12, the inner side surface of the rotating ring gear 14 near the central hole is provided with a track fitting structure 142, the track fitting structure 142 is a screw structure, and is uniformly distributed on the inner side surface of the rotating ring gear 14, and the number of the track fitting structure is the same as the number of the axial rotating tracks 122 and the number of the radial rotating tracks 124.
The thread structure of the track matching structure 142 is engaged with the half thread groove of the axial rotation track 122, specifically, the width of the thread structure is the same as the width of the half thread groove or slightly smaller than the width of the half thread groove, and the height of the thread structure is the same as the depth of the half thread groove or slightly smaller than the depth of the half thread groove, so that the thread structure runs smoothly and does not shake or dislocate when rotating in the half thread groove.
Further referring to fig. 2, the distance between the axial limiting surface 1242 and the right end surface is the same as the distance between the two end surfaces of the thread of the track matching structure 142, so that the track matching structure 142 is engaged with the radial rotation track 124, and when the rotary gear ring 14 performs radial rotation movement on the radial rotation track 124, the axial limiting surface 1242 limits the rotary gear ring to perform axial movement, so that the rotary gear ring can only perform radial rotation movement; when the rotary gear ring 14 rotates to the position where the track engaging structure 142 engages with the radial-direction-limiting surface 1244, the radial-direction-limiting surface 1244 limits the rotary gear ring to continue to move radially, so that the rotary gear ring 14 cannot rotate any more.
Referring to fig. 2, 3 and 5 together, the end cap 16 is fixedly connected to the right end surface of the rotary gear shaft 12 through a connecting member 18, specifically, the end cap 16 is in a disk shape in this embodiment, but it may have other shapes, which is not limited herein. The end cap 16 has an outer diameter greater than the outer diameter of the rotating pinion 12. A protrusion 162 is protruded toward the rotary shaft 12 at the center of the end cover 16, and is engaged with the receiving space 126 of the rotary shaft 12. The end cap 16 is further provided with a through hole 164 at a central position thereof for receiving the connecting member 18.
Wherein the connecting member 18 is a connecting bolt.
Referring to fig. 1, 3 and 5, when the rotary assembly is assembled, the rotary ring gear 14 is screwed in from the end of the rotary shaft 12 where the end cover 16 is assembled, and then the end cover 16 is fixed to the rotary shaft 12 by the connecting member 18. The track engaging structure 142 engages with the axial rotation track 122 and the radial rotation track 124, so that the rotating ring gear 14 can perform axial and radial rotation movements through the axial rotation track 122 and the radial rotation track 124 without shaking.
Specifically, when the rotary component is assembled, the rotary ring gear 14 is screwed in from the radial rotary track 124 until the track matching structure 142 is meshed with the axial rotary track 122, then the protruding structure 162 at the center of the end cover 16 is inserted into the receiving space 126 at the end face of the rotary shaft 12 in a matching manner, and the connecting piece 18 is connected with the threaded hole 128 communicated with the receiving space 126 at the end face of the rotary shaft 12 through the through hole 164 and the protruding structure 162 and is screwed tightly.
When the rotating assembly is operated, the rotary ring gear 14 is moved from one end to the other end of the axial rotation rail 122 by the rail fitting structure 142, and the rotary ring gear 14 rotates with respect to the rotary shaft 12 and moves a predetermined distance in the axial direction of the rotary shaft 12; the rotary ring gear 14 is moved from one end to the other end of the radial rotary rail 124 by the rail fitting structure 142, and the rotary ring gear 14 is rotated by a predetermined distance with respect to the rotary pinion 12.
Specifically, as shown in fig. 1, when the rotary toothed ring 14 moves from the end of the axial rotary rail 122 away from the end cover 16 to the end close to the end cover 16 through the rail fitting structure 142, the rotary toothed ring 14 moves in the axial direction by a predetermined distance with respect to the rotary toothed shaft 12 and can also rotate by a first angle with respect to the rotary toothed shaft 12. The predetermined distance is determined according to the actual situation, and the first angle may be 0 °, that is, the rotating ring gear 14 is only axially moved by a predetermined distance with respect to the rotating pinion 12, but is not rotated with respect to the rotating pinion 12; the first angle can be any angle smaller than 180 degrees, and the value of the first angle can be determined according to actual conditions; when the rotating ring gear 14 moves from the end of the radial rotating track 124 communicating with the axial rotating track 122 to the radial limiting surface 1244 through the track matching structure 142, the rotating ring gear 14 does not move in the axial direction relative to the rotating pinion 12, and only rotates by a second angle, which may be determined according to actual conditions. In this embodiment, the sum of the first angle and the second angle is not greater than 180 °.
Referring to fig. 6, the present invention also provides a foldable vehicle, which includes the rotating assembly 20 of the above embodiment, further includes a front wheel 22, a front frame 24, a steering shaft 26, a rear frame 28, a rear wheel 30, and further includes a seat 32, pedals 34, and a fixing member 36.
The folding bicycle can be a folding bicycle or a folding electric bicycle.
Wherein the seat 32 and the pedals 34 are foldable.
The fixing member 36 is used to fix the front frame 24 and the rear frame 28 relative to each other. In this embodiment, the fixing member 36 is a detachable connecting rod for connecting the front frame 24 and the rear frame 28, so that the front frame and the rear frame are fixed relatively. In other embodiments, the fixing member may be other fixing connectors.
Referring to fig. 1 and 6 together, the steering shaft 26 connected to the front frame 24 is fixedly connected to the rotating assembly 20 through a connecting device on the rotating ring gear 14, in the embodiment shown, the connecting device is a threaded hole 144, alternatively, the connecting device may also be a protruding structure protruding from the surface of the rotating ring gear 14, in this case, a groove matching with the protruding structure is formed on the steering shaft 26, and the steering shaft 26 is fixedly connected to the protruding structure through the groove so that the steering shaft 26 is fixedly connected to the rotating assembly 20; the rear frame 28 and the cylindrical surface of the rotary pinion 12 without the rotary rail can be fixedly connected together by welding.
The rotary ring gear 14 may also be connected to the rear frame 28 of the foldable vehicle, and the rotary shaft gear is fixedly connected to the steering shaft 26, and a connecting device is provided on the rotary shaft gear in a manner consistent with the above-mentioned connection between the rotary ring gear 14 and the steering shaft 26, which will not be described in detail.
In use, when the rotary toothed ring 14 connected to the front frame 24 is located at the end of the half-threaded groove of the axial rotary rail 122 (i.e. the leftmost end of the axial rotary rail 122 shown in fig. 2), the foldable vehicle is in a normal riding state, at this time, the fixing member 36 is a detachable connecting rod which connects the front frame 24 and the rear frame 28, so that the front frame 24 and the rear frame 28 are relatively fixed, and at this time, the front wheel 22 and the rear wheel 30 are in the same plane; in another embodiment, the fixing element 36 may also be a locking element disposed on the rotating assembly 20, and the locking element is used for fixing the rotating gear ring 14 and the rotating gear shaft 12 when the rotating gear ring 14 is located at the end of the half-threaded groove of the axial rotating rail 122 (i.e., the leftmost end of the axial rotating rail 122 shown in fig. 2), so that the front frame 24 and the rear frame 28 are fixed relative to each other; when it is desired to fold, the front frame 24 is released from the rear frame 28, i.e., the detachable linking rods are removed or the lock members are opened, and the front frame 24 is rotated, so that the rotary ring gear 14 connected to the front frame 24 is axially rotated through the axially rotating rails 122 engaged therewith. In this process, the angle between the front frame 24 and the rear frame 28 gradually decreases, the distance between the centers of the front wheel 22 and the rear wheel 30 gradually decreases, and the distance between the plane in which the front wheel 22 is located and the plane in which the rear wheel 30 is located increases to a predetermined distance, and it should be noted that in this process, the front wheel 22 does not interfere with the rear wheel 30. In the present embodiment, the predetermined distance is greater than the thickness of the front wheel 22, and in other embodiments, the predetermined distance is determined according to actual conditions; then, the front frame 24 continues to rotate in the same direction, so that the rotary toothed ring 14 makes a radial rotary motion through the radial rotary rail 124 until the rail matching structure 142 on the inner side of the rotary toothed ring 14 completely abuts against the radial limiting surface 1244, and the rotary motion is finished, and the front and rear wheels 22, 30 of the folding bicycle are in an overlapped state. During the radial rotation of the rotating ring gear 14 through the radial rotation track 124, the distance between the plane of the front wheel 22 and the plane of the rear wheel 30 is constant, and the angle between the front frame 24 and the rear frame 28 becomes gradually smaller, so that the distance between the centers of the front wheel 22 and the rear wheel 30 becomes gradually smaller until the centers completely coincide.
Conversely, when the foldable vehicle needs to be unfolded, the front frame 22 is rotated to make the rotating toothed ring 14 connected with the front frame 22 perform radial rotating motion on the radial rotating track 124, so that the front and rear wheels 22, 30 of the foldable vehicle are separated from the same center and the center distance is gradually increased; the front frame 22 is continuously rotated to make the rotary gear ring 14 connected with the front frame 22 perform axial rotation movement on the axial rotation track 122, the distance between the centers of the front and rear wheels 22, 30 of the foldable vehicle is continuously increased, and the distance between the planes of the front and rear wheels 22, 30 is gradually decreased until the rotary gear ring 14 rotates to the extreme end of the axial rotation track 122, and the rotation movement is finished, at this time, the front and rear wheels 22, 30 of the foldable vehicle are in the same plane, the foldable vehicle is completely opened, the front frame 24 and the rear frame 28 are relatively fixed through the fixing piece 36 (for example, a detachable connecting rod is installed between the front frame 24 and the rear frame 28, or a locking piece on the rotating assembly 20 is locked), and the foldable vehicle is in a riding state, in the process, the rotation direction of the rotary gear ring 14 is opposite to the rotation direction for folding the foldable vehicle, and the angle change between the front wheel 22 and the rear wheel 28 is also opposite to the angle change in the folding process of the foldable vehicle.
According to the folding bicycle, the front wheel and the rear wheel of the folding bicycle are firstly rotated to different horizontal planes through the rotating assembly, the center distance is reduced, and then the front wheel and the rear wheel are rotated to the state that the centers are completely overlapped, so that the folding bicycle is small in size, small in occupied space and convenient to carry.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. A rotary assembly, the rotary assembly comprising: the rotary gear shaft, the rotary gear ring which is rotatably connected to the rotary gear shaft and the end cover which is fixedly connected to one end of the rotary gear shaft are arranged on the rotary gear shaft;
wherein, a rotary track is arranged on the cylindrical surface of the rotary gear shaft; the rotating gear ring is provided with a track matching structure matched with the rotating track, and the rotating gear ring rotates relative to the rotating gear shaft through the matching of the track matching structure and the rotating track and moves axially on the rotating gear shaft;
the rotating track comprises an axial rotating track and a radial rotating track; the inner side surface of the rotary gear ring is provided with a track matching structure matched with the axial and radial rotary tracks; the rotating toothed ring is matched with the axial rotating track and the radial rotating track through the track matching structure, so that the rotating toothed ring rotates relative to the rotating toothed shaft and moves axially on the rotating toothed shaft;
the track matching structure is a thread structure, the axial rotating track is a half thread groove starting from one end of the rotating gear shaft connected with the end cover, and the thread structure is meshed with the half thread groove; the radial rotating track is a clamping groove communicated with the starting end of the axial rotating track; the clamping groove is provided with an axial limiting surface and a radial limiting surface, the distance between the axial limiting surface and the starting end is the same as the distance between the axial limiting surface and the end surface of the thread structure, and the radial limiting surface limits the rotary gear ring to continue to move radially;
and the axial limiting surface is parallel to the right end surface of the rotating gear shaft.
2. The rotary assembly of claim 1, wherein the rotary ring gear rotates relative to the rotary pinion and moves a predetermined distance in an axial direction of the rotary pinion as the rotary ring gear moves from one end of the axial rotary track to the other end through the track-engaging structure.
3. The rotating assembly according to claim 1, wherein the rotating ring gear rotates a predetermined angle relative to the rotating pinion shaft as the rotating ring gear moves from one end of the radial rotating track to the other end through the track engaging structure.
4. The rotary assembly of claim 1 further comprising a connector by which the end cap is connected to the rotary gear shaft.
5. The rotating assembly according to claim 4, wherein the connecting member is a connecting bolt, the rotating pinion is provided with a threaded hole, the end cap is provided with a through hole, and the connecting bolt passes through the through hole to be connected with the threaded hole in a matching manner.
6. The rotary module according to claim 1, wherein said thread structures are uniformly distributed on the inner side of said rotary ring gear, and the number of said rotary tracks is the same, and said rotary tracks are uniformly distributed on the cylindrical surface of said rotary tooth shaft.
7. A folding vehicle comprising a rotating assembly, a front frame, a rear frame, front wheels, rear wheels and a steering shaft, wherein the rotating assembly is the rotating assembly according to any one of claims 1 to 6.
8. The folding bike as claimed in claim 7, characterized in that the folding bike is a folding bike or a folding electric bike.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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CN201610885801 | 2016-10-10 | ||
CN201610885801X | 2016-10-10 |
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CN106741449A CN106741449A (en) | 2017-05-31 |
CN106741449B true CN106741449B (en) | 2022-11-18 |
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CN201611128965.4A Active CN106741449B (en) | 2016-10-10 | 2016-12-09 | Rotating assembly and folding vehicle |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107336773A (en) * | 2017-07-07 | 2017-11-10 | 胡小丽 | A kind of portable child car |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN206615313U (en) * | 2016-10-10 | 2017-11-07 | 安徽炫风新能源科技有限公司 | A kind of rotary components and folded bicycle |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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DE202004006903U1 (en) * | 2004-04-29 | 2004-07-01 | Heinz Kettler Gmbh & Co Kg | Foldable frame for a tricycle, balance bike or children's bike |
GB2414972A (en) * | 2004-06-11 | 2005-12-14 | Univ Coventry | Folding bicycle |
EP2519436B1 (en) * | 2009-12-29 | 2016-05-18 | Mando Corporation Co., Ltd. | Folding type bicycle |
US8602436B2 (en) * | 2010-07-23 | 2013-12-10 | Joaquín Montero Basqueseaux | Foldable bicycle |
FR3008950B1 (en) * | 2013-07-25 | 2015-08-21 | Peugeot Citroen Automobiles Sa | FOLDING CYCLE |
CN104960612B (en) * | 2015-07-10 | 2017-06-06 | 深圳市恩斯迈新能源有限公司 | A kind of fold mechanism and folded bicycle |
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Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN206615313U (en) * | 2016-10-10 | 2017-11-07 | 安徽炫风新能源科技有限公司 | A kind of rotary components and folded bicycle |
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