CN202379011U - Easily-dismounted chain cover protecting disc structure for bicycle front chain wheel and crank assembly - Google Patents
Easily-dismounted chain cover protecting disc structure for bicycle front chain wheel and crank assembly Download PDFInfo
- Publication number
- CN202379011U CN202379011U CN2011202939711U CN201120293971U CN202379011U CN 202379011 U CN202379011 U CN 202379011U CN 2011202939711 U CN2011202939711 U CN 2011202939711U CN 201120293971 U CN201120293971 U CN 201120293971U CN 202379011 U CN202379011 U CN 202379011U
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- China
- Prior art keywords
- protection plate
- cover protection
- locations
- refining cover
- crank
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Abstract
The utility model provides an easily-dismounted chain cover protecting disc structure for a bicycle front chain wheel and crank assembly, comprising a plurality of combination units, each combination unit comprises a left positioning member and a right positioning member disposed at the two sides of the chain cover protecting disc, and the left positioning member and the right positioning member are fixedly connected, wherein the right positioning member is provided with a screw hole, the screw hole is for locking-in of a fixed pin, and the fixed pin goes through the crank and the chain wheel of the chain wheel and crank assembly, via the above way, the chain cover protecting disc is fixedly connected on the crank or the chain wheel in an effective mode of quick dismounting.
Description
Technical field
The invention relates to bicycle, more specifically relates to a kind of refining cover protection plate structure of being convenient to the tortuous handle group of bicycle nipper of dismounting.
Background technology
Include the fluted disc of several different-diameter sizes in the preceding fluted disc speed-changing mechanism of bicycle; Driving chain therein on the fluted disc running drive and advance; And be to prevent that coming off of chain, known way from tying up to the maximum fluted disc outside of diameter and having additional refining cover protection plate, to take precautions against possible the getting loose of chain.Only; Existing design in order to fixing refining cover protection plate is that refining cover protection plate is together reached purpose with the structure that the array bolt cooperates with screw rod with several fluted discs; In other words; Must be jointly when changing the outfit refining cover protection plate with all fluted discs take off and change the bolt that increases length and screw rod can, it is unfavorable for fast assembling-disassembling, increase more on foot operation be not easy to perplex.
For solving above-mentioned disappearance, the someone develops a kind of technology that when dismounting refining cover protection plate, must not take off fluted disc.More particularly, this patent is after utilizing one first nut to pass the combined hole of fluted disc and crank, is that a screw with through hole is locked and wherein reached the purpose that fluted disc is fixed in crank again; Then; Be positioned in advance with one second nut in the scarce recess of first nut; Make that second fixed by nut is motionless, and be placed with an external member so that possess fixed range each other between refining cover protection plate and the adjacent fluted disc, pass the through hole of combined hole, external member and screw that refining covers protection plate in regular turn with a bolt at last after; The bolt latter end is locked in second nut again, can reach refining cover protection plate is fixed in crank and refines the purpose that the dismounting of covering protection plate does not affect fluted disc.
Really this structure can solve the disappearance that known structure must be taken off all fluted discs when dismounting refining cover protection plate; Improve part precisely because still have not attain, that is, and when dismounting refining cover protection plate; Because of second nut is small-sized original paper, is not easy to rapid alignment and inserts in the scarce recess of first nut; Secondly, when bolt being taken out, be prone to cause second nut and external member to be scattered everywhere pulling down refining cover protection plate; Moreover bolt be difficult for to be aimed at the inconvenience of passing external member and second nut and increasing assembling on foot.Therefore, this structure still has and improves part again.
Summary of the invention
In view of this, the invention technical matters to be solved is to provide a kind of refining cover protection plate structure of being convenient to the tortuous handle group of bicycle nipper of dismounting, has fast assembling-disassembling and is convenient to the effect of operation.
Edge is to reach above-mentioned purpose, and the technical scheme of the invention is: can be convenient to the refining cover protection plate structure of the tortuous handle group of bicycle nipper of dismounting, wherein, the crank group comprises a crank, and crank one end is connected with fluted disc and refining cover protection plate; Refining cover protection plate have several perforation corresponding a plurality of assembly holes of this fluted disc crank group; The plural number combining unit, each combining unit includes a left locations and a right locations, and wherein, right locations has the perforation that a central siphon passes protection plate, and central siphon one end connects a head and is butted on one of this refining cover protection plate side surface, and central siphon has a screw; Left side locations has a sleeve joint hole and is sheathed on this central siphon, and left locations has the opposite side surface of this refining cover protection plate of bearing surface contact; And plural set pin, an end is provided with a thread segment and wears the assembly hole of fluted disc, crank, in the screw of locking corresponding combining unit.
In one embodiment, the central siphon of the right locations of this creation and the sleeve joint hole of this left side locations be for closely cooperating, and process or process or one of them person is that plastic cement is processed with plastic material with metallic material.
In another embodiment, this central siphon surface of creating right locations is provided with a thread segment; The sleeve joint hole of this left side locations then is a screw and combines with this thread segment.
Again; This creation includes plural fixed cell, and each fixed cell includes a pipe fitting and a conjunction, wherein; Pipe fitting inside has a thread segment and an appearance hole; Conjunction has the thread segment that a screwed pipe is locked pipe fitting, and set pin has one of thread segment end and passes this pipe fitting and this screwed pipe, and set pin has a head captured and holds the hole in this.
Description of drawings
Fig. 1 is the exploded perspective view of the invention one preferred embodiment;
Fig. 2 is the local assembled sectional view of the above-mentioned preferred embodiment of the invention;
Fig. 3 is the subelement block diagram of the above-mentioned preferred embodiment of the invention;
Fig. 4 is consolidated in the cutaway view of refining cover protection plate for the combining unit of the invention preferred embodiment;
Fig. 5 is consolidated in the cutaway view of refining cover protection plate for the combining unit of another preferred embodiment of the invention.
The specific embodiment
For being illustrated more clearly in this creation, lift preferred embodiment now and cooperate diagram to specify as after.
Fig. 1 creates the refining cover protection plate structure of the tortuous handle group of bicycle nipper that can be convenient to dismounting of a preferred embodiment to shown in Figure 3 for this; Wherein, crank group 100 comprises a crank 10, different fluted disc, plural fixed cell 30, a refining cover protection plate 40, the plural combining units 50 and plural set pin 60 of several diameters; The row branch is set forth in the back:
Those fluted discs are to be example with three in the present embodiment; Be respectively large fluted disc 20, middle fluted disc 22 and small tooth plate 24; Wherein, large fluted disc 20 and middle fluted disc 22 are that the pipe fitting 32 by fixed cell 30 matches with conjunction 34 and fixed and be divided into the both sides of crank 10, more particularly; Be perforation, the assembly hole 12 of crank 10 and the perforation on the large fluted disc 20 on the fluted disc 22 in wearing in regular turn with pipe fitting 32; Make the abutting part 32a of pipe fitting 32 1 ends press in the surface of fluted disc 22, then lock pipe fitting 32 in-to-ins with thread segment 32b, and when the abutting part 34b of conjunction 34 1 ends presses large fluted disc 20 surperficial with conjunction 34 1 end screwed pipe 34a; Folder is made large fluted disc 20 and middle fluted disc 22 about promptly reaching, and large fluted disc 20 and middle fluted disc 22 are consolidated in the purpose of crank 10; In addition, 24 of small tooth plates are to utilize several bolts 36 to pass and lock the assembly hole 14a of projection 14 and be consolidated in crank 10.
Refining cover protection plate 40 have several perforation 42 corresponding each assembly hole 12 of this crank 10.
Those combining units 50 include a left locations 52 and a right locations 54 made from metal respectively; Wherein, Right locations 54 has a central siphon 54a; Central siphon 54a has the screw 54b that is provided with vertically, pass the perforation 42 of refining cover protection plate 40 at central siphon 54a after, make central siphon 54a one end bonded assembly one head 54c be connected to the side surface 40a that protection plate 40 is covered in this refining; Left side locations 52 has a sleeve joint hole 52a and is sheathed on the central siphon 54a that spreads out of refining cover protection plate 40; Left side locations 52 and with opposite side surface 40b of this refining cover protection plate 40 of one of which bearing surface 52b contact; In addition, left locations 52 has recess 52c design, for conjunction 34 head captured wherein.For reaching the purpose that this creation refining cover protection plate has fast assembling-disassembling and is convenient to the dismounting operation; Aforementioned left locations 52 is can combine (Fig. 4 reference) to design with crank 10 affixed modes with refining cover protection plate 40 in advance with right locations 54 again; More particularly; The central siphon 54a of the right locations 54 in the present embodiment is that the sleeve joint hole 52a with left locations 52 adopts the mode of closely cooperating and makes, and disturbs the dismounting operation to avoid too much element at random is arranged whereby in disassembly process.
Those set pins 60 are the stock body; After the one of which end is provided with pipe fitting 32 that a screw section 62 wears fixed cell 30 in regular turn and screwed pipe 34a; Lock again among the screw 54b that has been incorporated into the right locations 54 on the refining cover protection plate 40, and the head 64 of set pin 60 other ends just is placed among one of this pipe fitting 32 appearance hole 32c.And in the process of dismounting refining cover protection plate 40, only must rotate with control set pin 60 or right locations 54 one of them person by instrument, another person is fixed can be reached to close on or revolve and moves back set pin 60, makes it the purpose that combines or separate with right locations 54.
The said structure design is not except moving any fluted disc in the process of dismounting refining cover protection plate 40; The more left locations 52 because of combining unit 50 is combined on the refining cover protection plate 40 with right locations 54 in advance; Lock among the screw 54b to reach the purpose of quick assembling refining cover protection plate 40 and provide set pin 60 to aim at apace; Otherwise, when pulling down refining cover protection plate 40, also have the effect of sharp work.
Explanation is in addition; Reach left locations 52 and the close-fitting each other design of right locations 54 except taking the precise measure making; Still can process with metallic material or process or one of them person adopts plastic cement and processes with regard to left locations 52 and right locations 54, utilize and force horizontal aperture of plastic cement elasticity to reach the purpose that closely cooperates with plastic material.
Again; Reach structure that left and right locations combines with refining cover protection plate except above-mentioned closely cooperating designs; This creation provides another structure choice shown in Figure 5 again, that is, central siphon 72 surfaces of right locations 70 are provided with a thread segment 72a; The sleeve joint hole of left side locations 80 changes a screw 82 into, utilizes thread segment 72a to combine with screw 82 and reaches right locations 70 practised with left locations 80 and be consolidated in the purpose of protection plate 40.
The above is merely this and creates preferable possible embodiments, uses this creation specification sheets and claim institute equivalent structure and method for making variation for it such as, ought to be included in the claim of this creation.
Claims (5)
1. the refining cover protection plate structure that can be convenient to the tortuous handle group of bicycle nipper of dismounting, the tortuous handle group of this nipper comprises a crank, crank one end is connected with fluted disc in refining cover protection plate; It is characterized in that:
Refining cover protection plate have several perforation corresponding a plurality of assembly holes of this fluted disc crank group; The plural number combining unit, each combining unit includes a left locations and a right locations, and wherein, right locations has the perforation that a central siphon passes refining cover protection plate, and central siphon one end connects a head and is butted on one of this refining cover protection plate side surface, and central siphon has a screw; Left side locations has a sleeve joint hole and is sheathed on this central siphon, and left locations has the opposite side surface of this refining cover protection plate of bearing surface contact; And plural set pin, an end is provided with a thread segment and wears the assembly hole of fluted disc, crank, in the screw of locking corresponding combining unit.
2. can be convenient to the refining cover protection plate structure of the tortuous handle group of bicycle nipper of dismounting according to claim 1, the central siphon that wherein should right side locations and the sleeve joint hole of this left side locations are for closely cooperating.
3. like the said refining cover protection plate structure of being convenient to the tortuous handle group of bicycle nipper of dismounting of claim 2, wherein should left side locations and right locations is processed with metallic material or with plastic material process or wherein one of at least the person be that plastic cement is processed.
4. can be convenient to the refining cover protection plate structure of the tortuous handle group of bicycle nipper of dismounting according to claim 1, central siphon surface that wherein should right side locations is provided with a thread segment; The sleeve joint hole of this left side locations is a screw and combines with this thread segment.
5. can be convenient to the refining cover protection plate structure of the tortuous handle group of bicycle nipper of dismounting according to claim 1; Include plural fixed cell, each fixed cell includes a pipe fitting and a conjunction, wherein; Pipe fitting inside has a thread segment and an appearance hole; Conjunction has the thread segment that a screwed pipe is locked pipe fitting, and set pin has one of thread segment end and passes this pipe fitting and this screwed pipe, and set pin has this appearance hole of a head captured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202939711U CN202379011U (en) | 2011-08-09 | 2011-08-09 | Easily-dismounted chain cover protecting disc structure for bicycle front chain wheel and crank assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202939711U CN202379011U (en) | 2011-08-09 | 2011-08-09 | Easily-dismounted chain cover protecting disc structure for bicycle front chain wheel and crank assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202379011U true CN202379011U (en) | 2012-08-15 |
Family
ID=46627529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202939711U Expired - Fee Related CN202379011U (en) | 2011-08-09 | 2011-08-09 | Easily-dismounted chain cover protecting disc structure for bicycle front chain wheel and crank assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202379011U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018148292A1 (en) * | 2017-02-13 | 2018-08-16 | Gates Corporation | Bicycle crank sprocket guard |
| EP3647170A1 (en) * | 2018-10-29 | 2020-05-06 | Miranda & Irmão Lda. | Crank set with chain guard ring and fastening element |
-
2011
- 2011-08-09 CN CN2011202939711U patent/CN202379011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018148292A1 (en) * | 2017-02-13 | 2018-08-16 | Gates Corporation | Bicycle crank sprocket guard |
| EP3647170A1 (en) * | 2018-10-29 | 2020-05-06 | Miranda & Irmão Lda. | Crank set with chain guard ring and fastening element |
| WO2020088975A1 (en) * | 2018-10-29 | 2020-05-07 | MIRANDA & IRMÃO, LDª | Crank set with chain guard ring and fastening element |
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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: 20120815 Termination date: 20150809 |
|
| EXPY | Termination of patent right or utility model |