CN217649595U - Hollow integrated chain wheel crank with three-jaw conical body structure - Google Patents
Hollow integrated chain wheel crank with three-jaw conical body structure Download PDFInfo
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- CN217649595U CN217649595U CN202221890119.7U CN202221890119U CN217649595U CN 217649595 U CN217649595 U CN 217649595U CN 202221890119 U CN202221890119 U CN 202221890119U CN 217649595 U CN217649595 U CN 217649595U
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- crank
- jaw
- fluted disc
- hollow shaft
- shaft lever
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Abstract
The utility model discloses a hollow integrated chain wheel crank with a three-jaw conical body structure, which comprises a hollow shaft lever, a three-jaw main crank, an auxiliary crank, a protective disc and a fluted disc; the two ends of the hollow shaft lever are respectively and fixedly connected with one end of the three-jaw main crank and one end of the auxiliary crank, the protective disc is tightly attached and fixed on the side surface of the three-jaw main crank facing the auxiliary crank, the fluted disc is tightly attached and fixed on the side surface of the protective disc facing the auxiliary crank, and the other ends of the three-jaw main crank and the auxiliary crank, which are not fixedly connected with the hollow shaft lever, are respectively provided with pedal holes; the three-jaw main crank and the outer side of the connecting end of the hollow shaft lever are provided with three fluted disc fixed claws which are distributed equidistantly on the same circumference and take the connecting center as the circle center, and the three fluted disc fixed claws are respectively provided with screw mounting holes. The utility model discloses simple structure, it is safe in utilization, main crank and fluted disc adopt three-jaw three-dimensional triangular pyramid structure fixed, have triangle stability strength, prevent to trample the breakage of taking place when the fluted disc is unstable.
Description
Technical Field
The utility model relates to a bicycle spare part technical field, concretely relates to integrative chain wheel crank of three-jaw conical body structure cavity.
Background
The chain wheel crank with the hollow structure is a part of a bicycle, is used for mounting a chain wheel and a chain to be treaded, has a transmission effect, is widely used in various bicycles, and gradually improves the use demand of people on the chain wheel crank with the hollow structure along with the popularization of bicycle sports culture, but the existing chain wheel crank with the hollow structure cannot meet the demand of people, so the chain wheel crank with the hollow structure which is more convenient to use is needed; when the chain wheel crank of empty structure used, will support chain wheel stationary dog position to improve the intensity of chain wheel stationary dog, fracture easily takes place when avoiding trampling the chain wheel.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an integrative chain wheel crank of three-jaw cone structure cavity, simple structure, it is safe in utilization, main crank and fluted disc adopt the three-dimensional triangular pyramid structure of three-jaw to fix, have triangle stability, prevent to trample the breakage of taking place when the fluted disc is unstable.
In order to achieve the above object, the utility model provides a following technical scheme:
the hollow integrated chain wheel crank with the three-jaw conical body structure comprises a hollow shaft rod, a three-jaw main crank, an auxiliary crank, a protective disc and a toothed disc; the two ends of the hollow shaft lever are respectively and fixedly connected with one ends of the three-jaw main crank and the auxiliary crank, the protective disc is tightly attached and fixed on the side surface of the three-jaw main crank facing the auxiliary crank, the fluted disc is tightly attached and fixed on the side surface of the protective disc facing the auxiliary crank, and pedal holes are respectively formed in the other ends of the three-jaw main crank and the auxiliary crank, which are not fixedly connected with the hollow shaft lever; three fluted disc fixed claws which are distributed at equal distance on the same circumference by taking a connecting center as a circle center are arranged on the outer side of the connecting end of the three-claw main crank and the hollow shaft lever, and screw mounting holes are respectively arranged on the three fluted disc fixed claws; a slotted hole is formed at the connecting end of the auxiliary crank and the hollow shaft lever, a plurality of tooth-shaped convex strips and tooth-shaped grooves are formed on the side wall of the slotted hole, and a gear shaft matched with the tooth-shaped convex strips and the tooth-shaped grooves is arranged at the connecting end of the hollow shaft lever and the auxiliary crank; the protective disc and the fluted disc are annular bodies, fixed lugs matched with the three fluted disc fixed claws are arranged in the central holes of the protective disc and the fluted disc respectively, fixed holes matched with the screw mounting holes are formed in the fixed lugs, and gear rings are arranged on the outer circles of the fluted disc annular bodies.
In the scheme, the hollow shaft rod, the three-jaw main crank, the auxiliary crank, the protective disc and the fluted disc are arranged in the middle of the bicycle frame, the hollow shaft rod is fixed with the bicycle frame, the three-jaw main crank and the auxiliary crank are fixed on the hollow shaft rod and are respectively connected with pedals, three fluted disc fixing claws of the three-jaw main crank form a three-claw conical body structure, the three claw positions of the fluted disc fixing claws can be supported, the triangular stability strength of the fluted disc fixing claws is ensured, and the breakage of the fluted disc when the treading is unstable is prevented; the protective disc and the fluted disc are fixed on the three-jaw main crank together through the three-jaw conical body, the fluted disc is provided with a transmission belt, and the protective disc can limit the transmission belt; the three-jaw main crank, the protective disc and the fluted disc penetrate through the screw mounting hole and the fixing hole through bolts to be fixedly connected with each other, and the three-jaw main crank and the auxiliary crank are respectively and fixedly connected with the pedals through the pedal holes.
As the utility model discloses preferred scheme, three-jaw main crank is equipped with the shaft hole with cavity axostylus axostyle link, cavity axostylus axostyle one end locate the shaft hole and with three-jaw main crank fixed connection.
As the preferred proposal of the utility model, the opposite sides of the three-jaw main crank and the auxiliary crank are respectively provided with an inward sunken lightening groove. This scheme subtract heavy is through setting up the recess on three-jaw main crank, vice crank and subtract heavy groove and realize, and the recess only is sunken nevertheless not break-over main part in to the body, when subtracting heavy, can keep better intensity.
As the preferred scheme of the utility model, three-jaw main crank, vice crank follow and cavity axostylus axostyle link extend straight line again after to the distal end slant. The three-jaw main crank, the auxiliary crank and the hollow shaft rod are connected with the cleaning end, the distance between the three-jaw main crank and the cleaning end cannot be too long so as to avoid generating larger compression torque on the hollow shaft rod, the three-jaw main crank and the auxiliary crank extend obliquely and then increase the distance between the pedals connected with the three-jaw main crank and the auxiliary crank, the requirements of human engineering are met, and the pedals feel comfortable when being trampled.
As the utility model discloses preferred scheme, three articulate three fluted disc stationary dog of three-jaw owner is equipped with arc claw piece, connection piece respectively, and is three arc claw piece formation spherical triangular pyramid platform, it is three the connection piece is equipped with the connection face that is located the coplanar and pastes tightly fixedly with the protection dish plane. The connection piece of this scheme is dull and stereotyped, and is integrative with arc claw piece, and the claw piece is made the arc and is made dull and stereotyped and compare, has better elasticity and impact resistance.
As the utility model discloses preferred scheme, the ring gear on the fluted disc ring body excircle is synchronous belt ring gear or metal chain ring gear. When the fluted disc of this scheme and synchronous belt cooperation were used, adopted the hold-in range ring gear, when using with the metal chain cooperation, adopted the chain ring gear.
Compared with the prior art, the beneficial effects of the utility model are that: the hollow shaft rod, the three-jaw main crank and the auxiliary crank are arranged, so that the weight of the crank is reduced through a hollow structure, the hardness and the strength of the crank are ensured, and the overall performance of the crank is improved; the mutual position of an end through three-jaw main crank and three fluted disc stationary dog sets up with a three-dimensional triangular pyramid structure and distributes, can support the three claw position of fluted disc stationary dog, has guaranteed the triangle stable strength of fluted disc stationary dog, prevents to trample the breakage of taking place when the fluted disc is unstable.
Drawings
Fig. 1 is a schematic side view of the present invention.
Fig. 2 is another schematic side view of the present invention.
Fig. 3 is a schematic diagram of the structure explosion of the present invention.
Fig. 4 is a schematic view of the structure of the hollow shaft rod, the three-jaw main crank and the auxiliary crank of the present invention.
Fig. 5 is another angled side view of fig. 4.
In the figure: 1. hollow shaft lever 2, three-jaw main crank 3, auxiliary crank 4 and protective disc
5. Fluted disc 11, gear shaft 21, fluted disc fixed claw 22 and shaft hole
23. Pedal hole 24, arc claw piece 25, connecting piece 31, slotted hole
32. Weight-reducing slot 45, fixing lug 211 and screw mounting hole
451. And (7) fixing holes.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the scope of protection of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present, and that the terms "vertical", "horizontal", "left", "right" and the like are used herein for descriptive purposes only.
Referring to fig. 1-5, the present invention provides a technical solution:
the hollow integrated chain wheel crank with the three-jaw conical body structure comprises a hollow shaft lever 1, a three-jaw main crank 2, an auxiliary crank 3, a protective disc 4 and a fluted disc 5; two ends of a hollow shaft lever 1 are respectively and fixedly connected with one end of a three-jaw main crank 2 and one end of an auxiliary crank 3, a protection disc 4 is tightly attached and fixed on the side surface of the three-jaw main crank 2 facing the auxiliary crank 3, a fluted disc 5 is tightly attached and fixed on the side surface of the protection disc 4 facing the auxiliary crank 3, and pedal holes 23 are respectively arranged at the other ends of the three-jaw main crank 2 and the auxiliary crank 3 which are not fixedly connected with the hollow shaft lever 1; three fluted disc fixed claws 21 which are distributed at equal distance on the same circumference by taking a connecting center as a circle center are arranged at the outer side of the connecting end of the three-claw main crank 2 and the hollow shaft lever 1, and screw mounting holes 211 are respectively arranged on the three fluted disc fixed claws 21; a slotted hole 31 is arranged at the connecting end of the auxiliary crank 3 and the hollow shaft lever 1, a plurality of tooth-shaped convex strips and tooth-shaped grooves are arranged on the side walls of the slotted hole 31, and a gear shaft 11 matched with the tooth-shaped convex strips and the tooth-shaped grooves is arranged at the connecting end of the hollow shaft lever 1 and the auxiliary crank 3; the protective disc 4 and the fluted disc 5 are annular bodies, the central holes of the protective disc 4 and the fluted disc 5 are respectively provided with a fixed lug 45 matched with the three fluted disc fixed claws 21, the fixed lug 45 is provided with a fixed hole 451 matched with the screw mounting hole 211, and the outer circle of the annular body of the fluted disc 5 is provided with a gear ring.
The three-jaw main crank 2 is equipped with shaft hole 22 with the 1 link of cavity axostylus axostyle, and hollow axostylus axostyle 1 one end is located shaft hole 22 and with three-jaw main crank 2 fixed connection.
And the opposite side surfaces of the three-jaw main crank 2 and the auxiliary crank 3 are respectively provided with an inwards concave weight-reducing groove 32.
The three-jaw main crank 2 and the auxiliary crank 3 extend obliquely from the connecting end with the hollow shaft lever 1 to the far end and then extend linearly.
Three fluted disc fixed claws 21 of the three-claw main crank 2 are respectively provided with an arc-shaped claw piece 24 and a connecting piece 25, the three arc-shaped claw pieces 24 form a spherical triangular pyramid platform, and the three connecting pieces 25 are provided with connecting faces positioned in the same plane and are tightly adhered and fixed with the plane of the protective disc 4.
The gear ring on the outer circle of the annular body of the fluted disc 5 is a synchronous belt gear ring or a metal chain gear ring.
The specific using process is as follows: when the scheme is used on a bicycle, the hollow shaft lever 1 is fixed with a frame, the three-jaw main crank 2 and the auxiliary crank 3 are fixed on the hollow shaft lever 1 and are respectively connected with bicycle pedals, and three fluted disc fixed claws 21 of the three-jaw main crank 2 form a three-jaw conical body structure, so that the three claw positions of the fluted disc fixed claws can be supported, the triangular stability strength of the fluted disc fixed claws is ensured, and the breakage caused when the fluted disc is not stably treaded is prevented; the protective disc 4 and the fluted disc 5 are fixed on the three-jaw main crank 2 together through the three-jaw conical body, and the fluted disc 5 is connected with a transmission belt.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. Integrative chain wheel crank of three-jaw conical body structure cavity, its characterized in that: comprises a hollow shaft lever (1), a three-jaw main crank (2), an auxiliary crank (3), a protective disc (4) and a fluted disc (5);
two ends of the hollow shaft lever (1) are respectively and fixedly connected with one ends of the three-jaw main crank (2) and the auxiliary crank (3), the protection disc (4) is tightly fixed on the side surface of the three-jaw main crank (2) facing the auxiliary crank (3), the fluted disc (5) is tightly fixed on the side surface of the protection disc (4) facing the auxiliary crank (3), and pedal holes (23) are respectively arranged at the other ends of the three-jaw main crank (2) and the auxiliary crank (3) which are not fixedly connected with the hollow shaft lever (1);
three fluted disc fixed claws (21) which are distributed at equal distance on the same circumference by taking a connecting center as a circle center are arranged on the outer side of the connecting end of the three-claw main crank (2) and the hollow shaft lever (1), and screw mounting holes (211) are respectively arranged on the three fluted disc fixed claws (21);
a slotted hole (31) is formed in the connecting end of the auxiliary crank (3) and the hollow shaft lever (1), a plurality of tooth-shaped convex strips and tooth-shaped grooves are formed in the side wall of the slotted hole (31), and a gear shaft matched with the tooth-shaped convex strips and the tooth-shaped grooves is arranged at the connecting end of the hollow shaft lever (1) and the auxiliary crank (3);
protection dish (4), fluted disc (5) are the ring body, just be equipped with respectively in protection dish (4), fluted disc (5) central hole with three fluted disc stationary dog (21) complex fixed lug (45), be equipped with on fixed lug (45) with screw mounting hole (211) complex fixed orifices (451), be equipped with the ring gear on fluted disc (5) ring body excircle.
2. The hollow integral chain wheel crank of three-jaw cone structure according to claim 1, characterized in that: the three-jaw main crank (2) is connected with the hollow shaft lever (1) through a connecting end and is provided with a shaft hole (22), and one end of the hollow shaft lever (1) is arranged in the shaft hole (22) and is fixedly connected with the three-jaw main crank (2).
3. The hollow integral chain wheel crank of three-jaw cone structure according to claim 1, characterized in that: and inwards sunken weight reduction grooves (32) are respectively formed in the opposite side surfaces of the three-jaw main crank (2) and the auxiliary crank (3).
4. The hollow integral chain wheel crank of three-jaw cone structure according to claim 1, characterized in that: the three-jaw main crank (2) and the auxiliary crank (3) extend obliquely from the connecting end with the hollow shaft lever (1) to the far end and then extend linearly.
5. The hollow integral chain wheel crank of three-jaw cone structure according to claim 1, characterized in that: three fluted disc fixed jaw (21) of three-jaw main crank (2) are equipped with arc claw piece (24), connection piece (25) respectively, and are three arc claw piece (24) form spherical triangular pyramid platform, and are three connection piece (25) are equipped with the connection face that is located the coplanar and paste closely fixedly with protection dish (4) plane.
6. The hollow integral crankset with three-jaw cone structure as claimed in claim 1, characterized in that: and the gear ring on the excircle of the annular body of the fluted disc (5) is a synchronous belt gear ring or a metal chain gear ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221890119.7U CN217649595U (en) | 2022-07-21 | 2022-07-21 | Hollow integrated chain wheel crank with three-jaw conical body structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221890119.7U CN217649595U (en) | 2022-07-21 | 2022-07-21 | Hollow integrated chain wheel crank with three-jaw conical body structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217649595U true CN217649595U (en) | 2022-10-25 |
Family
ID=83687419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221890119.7U Active CN217649595U (en) | 2022-07-21 | 2022-07-21 | Hollow integrated chain wheel crank with three-jaw conical body structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217649595U (en) |
-
2022
- 2022-07-21 CN CN202221890119.7U patent/CN217649595U/en active Active
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