CN203246559U - Locking mechanism of bicycle crank - Google Patents
Locking mechanism of bicycle crank Download PDFInfo
- Publication number
- CN203246559U CN203246559U CN 201320197918 CN201320197918U CN203246559U CN 203246559 U CN203246559 U CN 203246559U CN 201320197918 CN201320197918 CN 201320197918 CN 201320197918 U CN201320197918 U CN 201320197918U CN 203246559 U CN203246559 U CN 203246559U
- Authority
- CN
- China
- Prior art keywords
- mounting hole
- locking piece
- bicycle crank
- axis
- catch gear
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a locking mechanism of a bicycle crank. The locking mechanism of the bicycle crank comprises a crank body with an installation hole and a center shaft, wherein one end of the center shaft is inserted into the installation hole. The locking mechanism of the bicycle crank further comprises a locking piece, wherein the end, inserted into the installation hole, of the center shaft is provided with a connecting hole used for accommodating the locking piece and connected with the locking piece, and the locking piece is further connected with the installation hole. The locking mechanism of the bicycle crank is simple in structure, convenient to dismantle, firm and durable.
Description
Technical field
The utility model relates to a kind of bicycle crank, particularly a kind of bicycle crank catch gear.
Background technology
Present bicycle crank on the market mostly is bolted and is fixed this traditional knot
There is following problem in structure: needs by larger external force when 1, dismantling, so that extremely inconvenience of dismounting; When 2, dismantling, need fiercely beat with external force, easily cause the damage of bolt inner structure; 3, the bicycle crank steadiness of directly fixing by bolt is relatively poor, and skidding easily occurs.
The utility model content
The purpose of this utility model is that a kind of bicycle crank catch gear will be provided, and can solve one or more in the above-mentioned existing issue.
According to an aspect of the present utility model, a kind of bicycle crank catch gear is provided, comprise crank and axis with mounting hole, axis one end is inserted in the mounting hole, also comprise locking piece, the end that axis is inserted in mounting hole is provided with the connecting bore that holds locking piece and be connected with locking piece, and locking piece also interconnects with mounting hole.
The utlity model has the effect of simple in structure, convenient disassembly, firm and durable.
In some embodiments, locking piece is screw, and the connecting bore inwall is provided with the screw thread with the screw coupling.Thus, can have the effect that connects the locking axis.
In some embodiments, the end that axis is inserted in mounting hole is provided with wave shape groove, and the mounting hole inwall is provided with the projection that matches with groove.Thus, can have the effect that rubs between increase axis and the mounting hole.
In some embodiments, also be provided with pad between locking piece and the mounting hole.Thus, can have the effect that increases the area of contact between locking piece and the mounting hole.
In some embodiments, locking piece is provided with nut, and nut is threaded with mounting hole.Thus, can have and prevent that locking piece from withdrawing from the effect that comes off.
In some embodiments, also be provided with pad between locking piece and the nut.Thus, can have the effect that prevents locking piece and the direct contact friction of nut.
Description of drawings
Fig. 1 is the structural representation of the bicycle crank catch gear of the utility model one embodiment;
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 has schematically shown the bicycle crank catch gear according to a kind of embodiment of the utility model.As shown in the figure, this bicycle crank catch gear comprises with the crank 1 of mounting hole 3 and axis 2, axis 2 one ends are inserted in the mounting hole 3, the bicycle crank catch gear also comprises locking piece, the end that axis 2 is inserted in mounting hole 3 digs the connecting bore 4 that holds locking piece and be connected with locking piece, and locking piece also interconnects with mounting hole 3.
In the present embodiment, locking piece is screw 5, and connecting bore 4 inwalls are provided with the screw thread with screw 5 couplings, after screw 5 screws in connecting bore 4 and threaded engagement, can play the effect that connects locking axis 2.
In the present embodiment, the end that axis 2 is inserted in mounting hole 3 has dug wave shape groove 6, and mounting hole 3 inwalls dig the projection that matches with groove 6, when axis 2 injects mounting hole 3, groove 6 engages mutually with projection, can play the effect that increases friction between axis 2 and the mounting hole 3.In other embodiments, the end that axis 2 is inserted in mounting hole 3 can also be provided with annular spacing groove, and mounting hole 3 inwalls dig the annular protrusion that matches with annular spacing groove.
In the present embodiment, device has pad 7 between screw 5 and the mounting hole 3, screw 5 is provided with nut 8, between nut 8 and the screw 5 also device pad 9 is arranged, the outside face of nut 8 has dug outside thread, mounting hole 3 inwalls have dug negative thread, and nut 8 screws in the mounting hole 3, realize connecting by threaded engagement.
During installation, pad 7 is put into mounting hole 3, screw 5 is passed pad 7 put into mounting hole, then pad 9 is put on the screw terminal of screw 5, again nut 8 is connected locking with mounting hole 3 negative threads, at last axis 2 is inserted in the mounting hole 3, wave double wedge in groove 6 and the mounting hole 3 cooperates, by rotary screw 5, screw is connected with axis 2 negative threads 4, reach axis 2 and be locked to the position with the interior double wedge of mounting hole.
Above-described only is a kind of embodiment of the present utility model.For the person of ordinary skill of the art, under the prerequisite that does not break away from the utility model creation design, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (6)
1. bicycle crank catch gear, comprise crank and axis with mounting hole, described axis one end is inserted in the described mounting hole, it is characterized in that: also comprise locking piece, the end that described axis is inserted in described mounting hole is provided with the connecting bore that holds described locking piece and be connected with locking piece, and described locking piece also interconnects with described mounting hole.
2. bicycle crank catch gear according to claim 1, it is characterized in that: described locking piece is screw, described connecting bore inwall is provided with the screw thread with described screw coupling.
3. bicycle crank catch gear according to claim 1, it is characterized in that: the end that described axis is inserted in described mounting hole is provided with wave shape groove, and described mounting hole inwall is provided with the projection that matches with described groove.
4. each described bicycle crank catch gear is characterized in that: also be provided with pad between described locking piece and the described mounting hole according to claim 1 ~ 3.
5. each described bicycle crank catch gear according to claim 1 ~ 3, it is characterized in that: described locking piece is provided with nut, and described nut is threaded with described mounting hole.
6. bicycle crank catch gear according to claim 5 is characterized in that: also be provided with pad between described locking piece and the described nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320197918 CN203246559U (en) | 2013-04-16 | 2013-04-16 | Locking mechanism of bicycle crank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320197918 CN203246559U (en) | 2013-04-16 | 2013-04-16 | Locking mechanism of bicycle crank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203246559U true CN203246559U (en) | 2013-10-23 |
Family
ID=49373013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320197918 Expired - Fee Related CN203246559U (en) | 2013-04-16 | 2013-04-16 | Locking mechanism of bicycle crank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203246559U (en) |
-
2013
- 2013-04-16 CN CN 201320197918 patent/CN203246559U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 Termination date: 20200416 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |