CN220974459U - Dual locking structure of bicycle crank set - Google Patents
Dual locking structure of bicycle crank set Download PDFInfo
- Publication number
- CN220974459U CN220974459U CN202322589609.4U CN202322589609U CN220974459U CN 220974459 U CN220974459 U CN 220974459U CN 202322589609 U CN202322589609 U CN 202322589609U CN 220974459 U CN220974459 U CN 220974459U
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- crank
- mandrel
- hole
- opening
- arc
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- 230000009977 dual effect Effects 0.000 title claims description 8
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000004576 sand Substances 0.000 abstract description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- Motorcycle And Bicycle Frame (AREA)
Abstract
The utility model provides a double locking structure of a bicycle crank set, which comprises a mandrel, a fluted disc and a crank, wherein the crank is provided with two groups, one end of the crank is provided with connecting holes and is arranged at the left end and the right end of the mandrel through the connecting holes, one end of the crank is provided with an opening communicated with the connecting holes, both ends of the mandrel are provided with splines, one side of each spline is provided with a convex strip, and the convex strips are arranged at the inner sides of the openings; the crank is installed the side and is locked the screw in being close to open-ended one end, just one side of sand grip is provided with the arc wall with side lock screw block. According to the utility model, the convex strips are arranged at the two ends of the mandrel and the arc-shaped grooves which can be tightly clamped with the side locking screws are arranged on the convex strips, so that the double locking and locking of the crank can be realized under the cooperation of the cap sealing screws, the axial movement of the crank at the end head of the mandrel is prevented under the condition that the cap sealing screws are loose, and the stability is higher, so that the crank can be used stably.
Description
Technical Field
The utility model belongs to the technical field of bicycle accessories, and particularly relates to a double locking structure of a bicycle crank set.
Background
The crank set for bicycle is mainly formed from various transmission elements which are mutually connected and combined, and the conventional crank assembling element for forming bicycle is mainly formed from a mandrel, two cranks and a fluted disc, and the mandrel is usually mounted on the five-way pipe of bicycle, and two ends of the mandrel are respectively equipped with cranks, and then two ends of the mandrel are used for locking the cranks.
In the prior art, one end of the crank is provided with a mounting hole, one side of the mounting hole is usually provided with an opening, after the crank is mounted on the end of the mandrel, the opening is locked by a locking screw, so that the mounting hole is contracted, the crank is firmly and fixedly mounted on the end of the mandrel, and then the axial direction of the crank on the mandrel is limited again by a cap sealing screw, so that the situation of axial movement is prevented. In the installation mode, if the cap sealing screw is loosened, the crank is difficult to fix only by the locking screw, the crank is easy to axially move at the end of the mandrel, and even the crank falls off.
Accordingly, the present invention provides a dual locking structure for bicycle crankset, which is improved with respect to the existing structure and the shortcomings, so as to achieve the purpose of more practical value.
Disclosure of utility model
In order to solve the technical problems, the utility model provides a double locking structure of a bicycle crank set, which is achieved by the following specific technical means:
The double locking structure of the bicycle crank set comprises a mandrel, a fluted disc and a crank, wherein the crank is provided with two groups, one end of the crank is provided with connecting holes, the crank is arranged at the left end and the right end of the mandrel through the connecting holes, one end of the crank is provided with an opening communicated with the connecting holes, the two ends of the mandrel are provided with splines, one side of each spline is provided with a convex strip, and the convex strips are arranged at the inner sides of the openings; the crank is installed the side and is locked the screw in being close to open-ended one end, just one side of sand grip is provided with the arc wall with side lock screw block.
Further, a through hole communicated with the inside of the opening is formed in one side, close to the opening, of the crank, a threaded hole is formed in the other side, corresponding to the through hole, of the inside of the opening, and one end of the side locking screw penetrates through the through hole and is connected with the threaded hole.
Further, the circle center of the arc-shaped groove and the axes of the through hole and the threaded hole are on the same straight line, and the arc-shaped radius of the arc-shaped groove is equal to the radius of the through hole.
Further, threaded holes are formed in two ends of the mandrel, and cap sealing screws used for locking the crank are connected through the threaded holes.
Further, the two groups of cranks are identical in structure.
Compared with the prior art, the utility model has the following beneficial effects:
According to the utility model, the convex strips are arranged at the two ends of the mandrel and the arc-shaped grooves which can be tightly clamped with the side locking screws are arranged on the convex strips, so that the double locking and locking of the crank can be realized under the cooperation of the cap sealing screws, the axial movement of the crank at the end head of the mandrel is prevented under the condition that the cap sealing screws are loose, and the stability is higher, so that the crank can be used stably.
Drawings
FIG. 1 is a partially disassembled schematic illustration of the present utility model.
Fig. 2 is a schematic diagram of the general assembly of the present utility model.
Fig. 3 is a schematic view of the structure of the spindle of the present utility model.
In the figure, the correspondence between the component names and the drawing numbers is:
1. A mandrel; 2. fluted disc; 3. a crank; 4. sealing cap screws; 5. a side locking screw;
101. a spline; 102. a convex strip; 1021. an arc-shaped groove; 301. a connection hole; 302. an opening.
Detailed Description
Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.
In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Examples are shown in fig. 1 to 3:
The utility model provides a double locking structure of a bicycle crank set, which comprises a mandrel 1, a fluted disc 2 and a crank 3, wherein the crank 3 is provided with two groups, one end of the crank is provided with a connecting hole 301 and is arranged at the left end and the right end of the mandrel 1 through the connecting hole 301, one end of the crank 3 is provided with an opening 302 communicated with the connecting hole 301, the two ends of the mandrel 1 are provided with splines 101, one side of each spline 101 is provided with a raised strip 102, and the raised strips 102 are arranged at the inner side of the opening 302; the crank 3 is provided with a side locking screw 5 at one end close to the opening 302, and an arc-shaped groove 1021 engaged with the side locking screw 5 is provided at one side of the protruding strip 102.
Wherein, the crank 3 is provided with a through hole communicated with the inside of the opening 302 at one side close to the opening 302, and a threaded hole is arranged at the other side of the inside of the opening 302 corresponding to the through hole, and one end of the side locking screw 5 penetrates through the through hole and is connected with the threaded hole.
The circle center of the arc-shaped groove 1021 and the axes of the through hole and the threaded hole are on the same straight line, and the arc radius of the arc-shaped groove 1021 is equal to the radius of the through hole, so that after the side locking screw 5 is installed, the side locking screw can be locked with the arc-shaped groove 1021 rapidly and tightly, and the crank 3 is prevented from moving axially.
Wherein, the both ends of mandrel 1 all are provided with the screw hole to be connected with the cap screw 4 that is used for locking crank 3 through the screw hole, through the setting of cap screw 4, can further consolidate locking crank 3, do benefit to safe and stable riding.
Wherein, the two groups of cranks 3 have the same structure.
The working principle of the embodiment is as follows: through set up sand grip 102 and set up the arc groove 1021 that can lock screw 5 chucking with the side on sand grip 102 in the both ends of mandrel 1, can realize carrying out double locking and locking to crank 3 under the cooperation of cap sealing screw 4 to prevent under the not hard up condition of cap sealing screw 4, prevent that crank 3 from carrying out axial displacement at mandrel 1 end, have higher stability, so that the steady use of crank 3.
The embodiments of the utility model have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the utility model in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, and to enable others of ordinary skill in the art to understand the utility model for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (5)
1. The utility model provides a dual locking structure of bicycle crank group, includes mandrel (1), fluted disc (2) and crank (3), crank (3) are provided with two sets of, and one end all is provided with connecting hole (301) to both ends about mandrel (1) are all installed through connecting hole (301), one end of crank (3) is equipped with connecting hole (301) communicating opening (302), its characterized in that: the two ends of the mandrel (1) are provided with splines (101), one side of each spline (101) is provided with a convex strip (102), and the convex strips (102) are arranged on the inner side of the opening (302); the crank (3) is provided with a side locking screw (5) at one end close to the opening (302), and one side of the raised line (102) is provided with an arc-shaped groove (1021) which is clamped with the side locking screw (5).
2. The bicycle crankset dual locking structure of claim 1, wherein: the crank (3) is provided with a through hole communicated with the inside of the opening (302) at one side close to the opening (302), the other side of the inside of the opening (302) is provided with a threaded hole corresponding to the through hole, and one end of the side locking screw (5) penetrates through the through hole and is connected with the threaded hole.
3. The bicycle crankset dual locking structure of claim 2, wherein: the circle center of the arc-shaped groove (1021) and the axes of the through hole and the threaded hole are on the same straight line, and the arc-shaped radius of the arc-shaped groove (1021) is equal to the radius of the through hole.
4. The bicycle crankset dual locking structure of claim 1, wherein: screw holes are formed in two ends of the mandrel (1), and cap sealing screws (4) used for locking the crank (3) are connected through the screw holes.
5. The bicycle crankset dual locking structure of claim 1, wherein: the two groups of cranks (3) have the same structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322589609.4U CN220974459U (en) | 2023-09-23 | 2023-09-23 | Dual locking structure of bicycle crank set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322589609.4U CN220974459U (en) | 2023-09-23 | 2023-09-23 | Dual locking structure of bicycle crank set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220974459U true CN220974459U (en) | 2024-05-17 |
Family
ID=91035458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322589609.4U Active CN220974459U (en) | 2023-09-23 | 2023-09-23 | Dual locking structure of bicycle crank set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220974459U (en) |
-
2023
- 2023-09-23 CN CN202322589609.4U patent/CN220974459U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |