CN210455101U - Bicycle crank device, bicycle crank sprocket and bicycle crank sprocket assembly - Google Patents
Bicycle crank device, bicycle crank sprocket and bicycle crank sprocket assembly Download PDFInfo
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- CN210455101U CN210455101U CN201920271702.1U CN201920271702U CN210455101U CN 210455101 U CN210455101 U CN 210455101U CN 201920271702 U CN201920271702 U CN 201920271702U CN 210455101 U CN210455101 U CN 210455101U
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Abstract
The utility model discloses a bicycle crank device, a bicycle crank chain wheel and a bicycle crank chain wheel assembly, which comprises a chain wheel, a crank shaft and a torque transmission component; the crankset is provided with a rotating axis, and the crank shaft can rotate around the rotating axis; the torque transmission components are respectively arranged at two ends of the crankshaft, and the torque transmission components at least one side support the crankshafts and are used for transmitting torque at a power input end from the crankshaft to the crankshafts; wherein a hollow structure is arranged in the torque transmission assembly. The chain wheel is directly arranged on the torque transmission assembly, so that an inner ring connecting structure required by direct connection of the chain wheel and a crankshaft is reduced, the whole chain wheel is annular, and the whole structure is light; what adopt in the torque transmission subassembly is hollow out construction design in addition, under the circumstances of guaranteeing torque transmission subassembly intensity for the torque transmission subassembly quality is lighter, required power when having less the passerby pedal application of force, and then has alleviateed the whole weight of whole bicycle.
Description
Technical Field
The utility model relates to a bicycle technical field especially relates to a bicycle crank device, bicycle crank sprocket and bicycle crank sprocket assembly.
Background
Bicycles are becoming an increasingly popular form of recreation as well as a means of transportation. In addition, bicycling has become a popular sport event. Whether the bicycle is used for recreation, transportation or competition, the current trend is to make bicycles stronger and lighter than existing bicycles.
Accordingly, every component of a bicycle is continually redesigned to minimize its weight and to provide sufficient strength. While the crank sprocket of a bicycle, which is an important input part of the power system of the bicycle, extends outwardly from the crank shaft in opposite directions and is connected at its free end with a pedal for supporting the rider's foot. The rotation of the pedals by the rider causes the rotation of one or more front sprockets, which in turn move the chain of the bicycle to rotate one or more rear sprockets, which in turn rotate the rear wheels of the bicycle.
The working condition of the crank chain wheel is the most intuitive component for a rider to feel the riding feeling of the bicycle, so the lightweight design of the crank chain wheel is the key problem for the development of the bicycle industry at present.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a simple structure, light-weighted bicycle crank device of overall structure, bicycle crank sprocket and bicycle crank sprocket assembly.
The utility model provides a technical scheme that its technical problem adopted does:
a bicycle crankset, comprising:
the chain wheel is provided with at least one group and is provided with a rotating shaft center line;
a crankshaft rotating around the rotation axis; and
the torque transmission components are respectively arranged at two ends of the crankshaft, and the torque transmission components at least one side support the crankshafts and are used for transmitting torque at a power input end from the crankshaft to the crankshafts;
wherein, be provided with hollow out construction in the moment of torsion transmission subassembly.
As an improvement of the technical scheme, the torque transmission assembly comprises a crank arm and a connecting platform for connecting the crank arm and one end of the crank shaft, and the crankset is installed on the connecting platform and rotates coaxially with the crank shaft; the hollow-out structures are installed on the crank arms.
As the improvement of the technical scheme, one side of the hollow structure opening is arranged on one side of the crank arm close to the crankset, and the hollow structure is provided with the protective cover.
As the improvement of the technical scheme, the crank arm comprises a left crank connecting arm and a right crank connecting arm, the left crank connecting arm and the right crank connecting arm are respectively installed on one corresponding end of the crank shaft through the connecting platform, and the crankset is installed on the connecting platform on one corresponding side of the right crank connecting arm.
As the improvement of the technical scheme, one side of the protective cover on the right crank connecting arm, which is close to the chain wheel, is connected with the side wall of the chain wheel through the connecting column.
As an improvement of the technical scheme, the connecting platform on the side corresponding to the right crank connecting arm is provided with a plurality of extending parts along the radial direction of the crank shaft, the tail ends of the extending parts are provided with mounting positions, and the crankshafts are mounted on the mounting positions and locked through screws.
As an improvement of the technical scheme, the mounting positions are arranged on both sides of the tail end of the extension part along the direction of the axis of rotation, and at least one mounting position is also arranged on the side wall of the extension part close to one side of the chain wheel.
As an improvement of the technical scheme, the crankset is provided with at most three groups, the diameters of all the cranksets are gradually increased, and the crankset is sequentially arranged on the corresponding mounting positions along the outward direction of the right crank connecting arm.
A crank chain wheel of bicycle is composed of a crank unit and a chain wheel.
The utility model provides a bicycle crank sprocket assembly, includes bicycle crank sprocket and dynamometer, the dynamometer is installed in hollow out construction.
The beneficial effects of the utility model are that:
the bicycle crank device directly installs the chain wheel on the torque transmission assembly, reduces the inner ring connection structure required by directly connecting the chain wheel with the crank shaft, and leads the whole chain wheel to be annular, and the whole structure is light; what adopt in the torque transmission subassembly is hollow out construction design in addition, under the circumstances of guaranteeing torque transmission subassembly intensity for the torque transmission subassembly quality is lighter, required power when having less the passerby pedal application of force, and then has alleviateed the whole weight of whole bicycle.
Drawings
The present invention will be further described with reference to the accompanying drawings and specific embodiments, wherein:
fig. 1 is a first schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic structural diagram ii of the embodiment of the present invention;
fig. 3 is a schematic partial structural diagram of an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 3, the present invention provides a bicycle crank device, comprising: the transmission device comprises a chain wheel 1, a crank shaft 2, a torque transmission component 3 and pedals arranged on the output end of the torque transmission component 3; the crank shaft 2 can rotate around the rotation axis; the torque transmission components 3 are respectively arranged at two ends of the crank shaft 2, and the torque transmission components 3 at least one side support the chain wheel 1 and are used for transmitting torque at the power input end from the crank shaft 2 to the chain wheel 1; wherein, be provided with hollow out construction 31 in the moment of torsion transmission subassembly 3, the pedal is installed on the input end of moment of torsion transmission subassembly 3.
Wherein, at least one group of the chain wheel 1 is provided with a rotating shaft center line; the number of crankset 1 is designed to meet the actual design requirements, and if it is a multi-stage crankset design, these multi-stage cranksets are designed similarly to the multi-stage sprockets of a conventional bicycle. Wherein chain wheel 1 is along circumference evenly being provided with a plurality of sprocket on its outer lane outer edge, meshes with the chain of bicycle mutually, certainly for meshing better, the sprocket all is provided with the slope along the both sides to the rotation axis direction on this application 1 for the sprocket is the wedge form, is convenient for like this mesh with the chain mutually. In addition, in order to facilitate transmission, the toothed disc 1 is uniformly provided with a plurality of limiting pins in the axial direction, and the limiting pins are arranged on a virtual circle where tooth roots of the chain teeth are located, so that the situation that the action area of the chain teeth matched with the chain is reduced in the process that the chain is meshed with the chain teeth can be avoided, the power transmission efficiency is improved, and the power loss is reduced. Of course, in order to facilitate the installation of the chain wheel 1, the chain wheel 1 is provided with an installation structure.
Referring to fig. 1 to 3, the torque transmission assembly 3 includes a crank arm 32 and a connecting table 33 for connecting the crank arm 32 and one end of the crank shaft 2, and the crankset 1 is mounted on the connecting table 33 and rotates coaxially with the crank shaft 2; the cutout 31 is mounted on a crank arm 32. The open side of the hollow structure 31 is arranged on one side of the crank arm 32 close to the crankset 1, and the hollow structure 31 is provided with a protective cover 34. In the present application, the hollowed-out structure 31 may be a blind hole, a blind groove or other hollowed-out structures, and mainly ensures that the strength of the crank arm 32 meets the requirements, so as to reduce the mass of the crank arm 32 and reduce the use of the material of the crank arm 32. Generally, bicycles are made of lightweight high-strength materials, and the material cost is high, so the lightweight design can reduce the manufacturing cost to a certain extent. The preferred hollow out construction 31 is blind groove structure in this application, can be like this at its inside other electronic components of installation, as the additional action, improves the intellectuality of whole bicycle.
Of course, the crank arm 32 includes a left crank connecting arm 32a and a right crank connecting arm 32b, the left crank connecting arm 32a and the right crank connecting arm 32b are respectively installed on a corresponding end of the crank shaft 2 through the connecting platform 33, and the crankset 1 is installed on the corresponding side of the right crank connecting arm 32b on the connecting platform 33. The connecting platform 33 is similar to a connecting flange structure, and it should be noted that, in the present application, the connecting platform 33 on one side of the right crank connecting arm 32b and the connecting platform 33 on the other side of the left crank connecting arm 32a have certain different structural designs, because at least one of the left crank connecting arm 32a and the right crank connecting arm 32b is used for fixing the crankset 1 and thus has different designs. In the present application, the specific structure of the crank axle 2 is not described in detail, and a crank axle commonly used in the market can be adopted as a basic component of a bicycle in the conventional structure, and the structure of the crank axle in the sprocket for the bicycle in Chinese patent 200410030484.0 can also be referred to.
In addition, in order to better fix the protecting cover 34 and reduce the influence of the chain on the protecting cover 34, one side of the protecting cover 34 on the right crank connecting arm 32b close to the chain wheel 1 is connected with the side wall of the chain wheel 1 through the connecting column 35, and the protecting cover 34 is locked on the right crank connecting arm 32b through a screw, and plays a role in sealing. The protecting cover 34 on the left crank connecting arm 32a is directly screwed on the left crank connecting arm 32a, and has no connection relation with other foreign objects. No matter be left crank connecting arm 32a or right crank connecting arm 32b, hollow out construction 31 all sets up the inboard of its crank arm 32, can play certain hidden effect for whole crank arm 32 appearance is pleasing to the eye.
In order to better install the crankset 1, the connecting platform 33 on the corresponding side of the right crank connecting arm 32b is provided with a plurality of extending parts 331 outwards along the radial direction of the crank shaft 2, the tail ends of the extending parts 331 are provided with installing positions 332, and the crankset 1 is installed on the installing positions 332 and locked through screws. Certainly, the chain wheel 1 is also provided with a structure matching with the installation position 332, it should be noted that in this application, the chain wheel 1 is provided with multiple stages, and therefore the installation position 332 is also provided with a plurality of installation positions, wherein the installation positions 332 are both arranged at the tail end of the extension portion 331 along the two sides of the rotation axis direction, and at least one installation position 332 is also arranged on the side wall of the extension portion 331 close to one side of the chain wheel 1. All the installation positions 332 are distributed outwards along the right crank connecting arm 32b and are in a step shape, so that the chain wheel 1 is provided with at most three groups, the diameters of all the chain wheels 1 are gradually increased, and the chain wheels are sequentially installed on the corresponding installation positions 332 in the outwards direction of the right crank connecting arm 32b, so that all the chain wheels 1 are similar to the appearance of a multi-stage chain wheel of a traditional bicycle.
In addition, still provide a bicycle crank sprocket in this application, this crank sprocket adopts crank device, is certainly the utility model discloses a crank device only discloses partial mechanism, can design and develop at the crank device of this application as to other structures of bicycle crank sprocket, makes it to realize all functions that current bicycle sprocket can realize.
In addition, this application still provides a bicycle crank sprocket assembly, including bicycle crank sprocket and dynamometer, the dynamometer is installed in hollow out construction 31. Of course, the power meter is not limited to be installed, and other electronic devices may also be installed in the hollow structure 31, which is not illustrated here.
According to the bicycle crank device, the chain wheel 1 is directly arranged on the torque transmission assembly 3, so that an inner ring connecting structure required by directly connecting the chain wheel 1 with the crank shaft 2 is reduced, the whole chain wheel 1 is annular, and the whole structure is light; what adopt in the torque transmission subassembly 3 is hollow out construction 31 design in addition, under the circumstances of guaranteeing 3 intensity of torque transmission subassembly for 3 quality of torque transmission subassembly is lighter, required power when having less the passerby's pedal application of force, and then has alleviateed the whole weight of whole bicycle.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments, and the technical effects of the present invention should be all included in the protection scope of the present invention as long as the technical effects are achieved by any of the same or similar means.
Claims (10)
1. A bicycle crank device, comprising:
the chain wheel is provided with at least one group and is provided with a rotating shaft center line;
a crankshaft rotating around the rotation axis; and
the torque transmission components are respectively arranged at two ends of the crankshaft, and the torque transmission components at least one side support the crankshafts and are used for transmitting torque at a power input end from the crankshaft to the crankshafts;
wherein, be provided with hollow out construction in the moment of torsion transmission subassembly.
2. A bicycle crankset as set forth in claim 1, wherein: the torque transmission assembly comprises a crank arm and a connecting table used for connecting the crank arm and one end of the crank shaft, and the crankset is installed on the connecting table and rotates coaxially with the crank shaft; the hollow-out structures are installed on the crank arms.
3. A bicycle crankset as set forth in claim 2, wherein: hollow out construction open-ended one side sets up in one side that the crank arm is close to the chain wheel, and hollow out construction is last to set up the protective cover.
4. A bicycle crankset as set forth in claim 3, wherein: the crank arm includes left crank linking arm and right crank linking arm, and left crank linking arm and right crank linking arm pass through respectively connect the platform to install on the corresponding one of crank axle, the chain wheel is installed and is connected the platform on one side that right crank linking arm corresponds.
5. The bicycle crankset as set forth in claim 4, wherein: one side of the protective cover on the right crank connecting arm, which is close to the chain wheel, is connected with the side wall of the chain wheel through a connecting column.
6. A bicycle crankset device as claimed in any one of claims 4 to 5, wherein: the connecting table on the corresponding side of the right crank connecting arm is provided with a plurality of extending parts along the radial direction of the crank shaft, the tail ends of the extending parts are provided with installation positions, and the crankset is installed on the installation positions and locked through screws.
7. The bicycle crankset as set forth in claim 6, wherein: the two sides of the tail end of the extension part along the direction of the axis of rotation are provided with the installation positions, and the side wall of the extension part close to one side of the chain wheel is also provided with at least one installation position.
8. The bicycle crankset as set forth in claim 7, wherein: the chain wheel is provided with three groups at most, and all chain wheel diameters increase gradually to install in proper order on corresponding installation position along the outside direction of right crank linking arm.
9. A bicycle crank sprocket which characterized in that: the crank sprocket employs a crank device as claimed in any one of claims 1 to 8.
10. A bicycle crank sprocket assembly which characterized in that: comprising a bicycle crank sprocket as in claim 9 and a dynamometer mounted within the cutout.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271702.1U CN210455101U (en) | 2019-03-04 | 2019-03-04 | Bicycle crank device, bicycle crank sprocket and bicycle crank sprocket assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920271702.1U CN210455101U (en) | 2019-03-04 | 2019-03-04 | Bicycle crank device, bicycle crank sprocket and bicycle crank sprocket assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210455101U true CN210455101U (en) | 2020-05-05 |
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ID=70428850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920271702.1U Active CN210455101U (en) | 2019-03-04 | 2019-03-04 | Bicycle crank device, bicycle crank sprocket and bicycle crank sprocket assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210455101U (en) |
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2019
- 2019-03-04 CN CN201920271702.1U patent/CN210455101U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211209 Address after: 519000 factory building B-2, No. 8, Honghui fifth road, Shuanglin District, LIANGANG Industrial Zone, Zhuhai City, Guangdong Province Patentee after: ZHUHAI LTWOO CONTROLLER TECHNOLOGY CO.,LTD. Address before: 519000 unit a0210, block a, entrepreneurship building, Tsinghua Science Park (Zhuhai), No. 101, University Road, Tangjiawan Town, high tech Zone, Zhuhai, Guangdong Patentee before: ZHUHAI DIRUILE TECHNOLOGY Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 519000 building B-2, No. 8, Honghui fifth road, Shuanglin District, LIANGANG Industrial Zone, Jinwan District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Blueprint Sports Technology Co.,Ltd. Address before: 519000 factory building B-2, No. 8, Honghui fifth road, Shuanglin District, LIANGANG Industrial Zone, Zhuhai City, Guangdong Province Patentee before: ZHUHAI LTWOO CONTROLLER TECHNOLOGY CO.,LTD. |