CN202937726U - Chain abrasion indictor for bicycle - Google Patents
Chain abrasion indictor for bicycle Download PDFInfo
- Publication number
- CN202937726U CN202937726U CN 201220511938 CN201220511938U CN202937726U CN 202937726 U CN202937726 U CN 202937726U CN 201220511938 CN201220511938 CN 201220511938 CN 201220511938 U CN201220511938 U CN 201220511938U CN 202937726 U CN202937726 U CN 202937726U
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- China
- Prior art keywords
- bicycle
- chain
- extension part
- wear indicator
- bump
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Abstract
The utility model discloses a chain abrasion indictor for a bicycle. The chain abrasion indictor is provided with a body part, a first protruded part extending out of the body part, and a second protruded part extending out of the body part from a position which is only spaced from the first protruded part at a first preset distance, wherein the first protruded part is provided with a first contact surface which is pushed to be in contact with a roller on one side of a first chain link of a plurality of chain links of a chain of the bicycle and a second contact surface which is pushed to be in contact with a roller on the other side of the first chain link; and the second protruded part is provided with a third contact surface which is in contact with a roller of a second chain link different from the first chain link. The chain abrasion indictor is high in working performance and low in manufacturing cost.
Description
Technical field
The chain wear indicator that is used for bicycle in replacing period of the relevant a kind of chain that is used in the judgement bicycle of the utility model.
Background technique
The roller chain of bicycle (the following chain that only is called) can wear away along with use and its total length can be extended.When chain extends, have chain in gear (gear) or the upper phenomenon generation of sliding and there is no engagement of sprocket wheel (sprocket).For anti-phenomenon here, and judge by the chain wear indicator whether change chain arrives.
The known chain wear indicator that TOHKEMY 2000-120803 communique discloses has three bumps that are inserted in three chain link plates.When measuring chain, among these three bumps, the position produces strength the roller in each chain link plate is pushed against in the opposite direction at first bump and second bump of position at central part of a square end section.And the position at the 3rd bump of the opposing party end in producing the power of pushing and pressing roller with the second bump equidirectional.The elongation degree of measurement chain that by this, can be correct between the second bump and the 3rd bump.
Yet, in above-mentioned common technology, owing to chain link plate must being inserted three bumps, therefore the poor problem of working efficiency is arranged.Moreover, the chain wear indicator must be maximized, the problem that therefore also has manufacture cost to uprise.
The model utility content
The technical problem that the utility model solves is to provide a kind of chain wear indicator for bicycle, and service behaviour is high, and can low cost fabrication.
Technical solution of the present utility model is:
A kind of chain wear indicator for bicycle wherein, possesses:
Main body portion;
The first bump, this main body portion extends certainly; And
The second bump, in leaving the position of the first intended distance with this first bump, and this main body portion extends certainly,
This first bump has:
The first surface of contact, pushing are contacted with the roller for a side of the first chain link plate among the chain link plate of the plural number of the chain of bicycle; And
The second surface of contact, pushing is contacted with the roller of the opposing party in this first chain link plate,
This second bump has the 3rd surface of contact, is contacted with the roller of second chain link plate different from this first chain link plate.
Described chain wear indicator for bicycle, wherein, this first bump possesses: the first extension part is formed with this first surface of contact; And second extension part, only leave the second intended distance with this first extension part, and be formed with this second surface of contact.
Described chain wear indicator for bicycle, wherein, this second extending part is between this first extension part and this second bump.
Described chain wear indicator for bicycle, wherein, this second intended distance is more than 0.5mm.
Described chain wear indicator for bicycle, wherein, this second intended distance is more than 0.85mm.
Described chain wear indicator for bicycle, wherein, this first extension part and this second extension part can flexible being toward or away from.
Described chain wear indicator for bicycle, wherein, this first extension part has distal end portion and proximal end and curved part.
Described chain wear indicator for bicycle, wherein, this first extension part forms L shaped.
Described chain wear indicator for bicycle, wherein, this first extension part is larger at the width of this curved part than this first extension part at this proximal width.
Described chain wear indicator for bicycle, wherein, this first extension part forms taper from this proximal end to this curved part.
Described chain wear indicator for bicycle, wherein, this first intended distance is equivalent to predetermined chain link plate and counts length.
Described chain wear indicator for bicycle, wherein, this predetermined chain link plate number is more than 10.
Described chain wear indicator for bicycle, wherein, this predetermined chain link plate number is 8,10 or 12.
Described chain wear indicator for bicycle, wherein, this first extension part has convex roller engaging piece in this distal end portion.
Described chain wear indicator for bicycle, wherein, this first extension part has first curvature section, and the radius of curvature of this first curvature section is more than 1.0mm.
Described chain wear indicator for bicycle, wherein, the radius of curvature of this first curvature section is more than 4.0mm.
Described chain wear indicator for bicycle, wherein, this second bump has torsion section, and the radius of curvature of this torsion section is below 3.0mm.
Described chain wear indicator for bicycle, wherein, the radius of curvature of this torsion section is below 2.5mm.
Described chain wear indicator for bicycle, wherein, the radius of curvature of this torsion section is below 1.0mm.
Chain wear indicator for bicycle of the present utility model possesses: main body portion; The first bump extends from main body portion; And second bump, only leaving the position of the first intended distance with the first bump, extend from main body portion.The first bump has: the first surface of contact, and pushing is contacted with the chain link plate for the plural number of the chain of bicycle, the side's roller in the first chain link plate; And second surface of contact, pushing is contacted with the opposing party's roller in the first chain link plate.The second bump has the 3rd surface of contact, is contacted with the roller of second chain link plate different from the first chain link plate.
Be used for the chain wear indicator of bicycle according to this, the roller that the first surface of contact and second surface of contact of the first bump contacted respectively pushes towards mutual opposite direction.And the 3rd surface of contact of the second bump produces in the second surface of contact equidirectional with the first bump the power that pushes against roller.By this, between the 3rd surface of contact of the second surface of contact of the first bump and the second bump, the direction of the second surface of contact pushing and pressing roller of the first bump, with the direction of the 3rd surface of contact pushing and pressing roller of the second bump form identical, and the elongation degree of measurement chain that can be correct.Moreover the first surface of contact and the second surface of contact insert between two rollers in identical chain link plate.Thereby fixedly the work of chain can once namely be completed, so working efficiency improves.Can with the miniaturization of chain wear indicator, therefore can lower manufacture cost again.
The first bump can possess the first extension part that is formed with the first surface of contact; And only leave the second intended distance with the first extension part, and be formed with the second extension part of the second surface of contact.Be preferably the first extension part and the second extension part for can flexiblely being toward or away from.
By this, the roller by the first extension part of the first bump and the second extension part pushing and pressing both sides can be fixed in the first chain link plate with the first bump.Moreover in case the first bump is fixed in the first chain link plate, the user must not support so that the first bump can not get loose from the first chain link plate with hand push, and can check between the roller of the second chain link plate whether can insert the second bump.Its result can be increased work efficiency.
The second extension part can the position between this first extension part and this second bump.
By this, between second extension part and the second bump of the first bump, the direction that the direction of the second extension part pushing and pressing roller of the first bump and the second bump push against roller forms identical, the elongation of measurement chain that can be correct.
More than the second intended distance can be 0.5mm.Being preferably this second intended distance is more than 0.85mm.
By this, the first bump can be inserted the first chain link plate and can really fix.
The first extension part preferably has distal end portion and proximal end and curved part.
By this, the elasticity of the first extension part will become large.
The first extension part is preferably formed as L shaped.
By this, the elasticity of the first extension part will become greatly, and the rigidity of the first extension part uprises.
It is large at the width of curved part that the first extension part cans be compared to the first extension part most at proximal width.Be preferably the first extension part and form taper from proximal end to curved part.
By this, the proximal rigidity of the first extension part will uprise.
The first intended distance preferably is equivalent to predetermined chain link plate number.Being preferably predetermined chain link plate number is more than 10.Perhaps, predetermined chain link plate number preferably is selected among 8,10,12.
By this, the user can measure the elongation degree of chain accurately.
The first extension part is preferably in this distal end portion and has convex roller engaging piece.
By this, the user easily is fixed in the first chain link plate with the first extension part and the second extension part.
The first extension part has first curvature section, more than the radius of curvature of first curvature section is preferably 1.0mm.The radius of curvature that is preferably first curvature section is more than 4.0mm.
By this, when inserting the first bump between two rollers of the first chain link plate, among the power of roller pushing and pressing the first extension part, the power composition of the direction vertical with direction of insertion will become large.Its result, the distance between the first extension part and the second extension part is easily dwindled because of elasticity, and easily inserts the first bump between two rollers of the first chain link plate.
The second extension part has torsion section, and the radius of curvature of torsion section is preferably below 3.0mm.The radius of curvature that is preferably torsion section is below 2.5mm.Better is that the radius of curvature of torsion section is below 1.0mm.
By this, when inserting the second bump between two rollers of the second chain link plate, among the power of roller pushing and pressing the first extension part, the power composition of the direction vertical with direction of insertion will diminish.Its result, the distance between the first extension part and the second extension part are difficult for dwindling because of elasticity, and are difficult for inserting the second bump between two rollers of the second chain link plate.By this, but the replacing of user's correct measurement chain whether arrive period.
According to the utility model, can provide a kind of service behaviour high and the chain wear indicator that is used for bicycle that can low cost fabrication.
Description of drawings
The side view of the chain wear indicator that is used for bicycle of Fig. 1 the utility model the first example;
Near the first bump of the chain wear indicator that is used for bicycle of Fig. 2 the utility model the first example enlarged view;
Fig. 3 shows that the first bump inserts the figure of the state of chain link plate;
Fig. 4 inserts in order to the first bump to be described the figure that acts on the power of the first extension part when chain link plate;
Near the second bump of the chain wear indicator that is used for bicycle of Fig. 5 the utility model the first example enlarged view;
Fig. 6 inserts in order to be illustrated in the second bump the figure that acts on the power of the second bump when chain link plate;
Fig. 7 shows the figure of variation of first and second extension part of the chain wear indicator that is used for bicycle of the utility model the first example;
Fig. 8 shows the figure of another variation of first and second extension part of the chain wear indicator that is used for bicycle of the utility model the first example;
The side view of the chain wear indicator that is used for bicycle of the variation of Fig. 9 the utility model the first example.
The primary component label declaration:
1,1a is used for the chain wear indicator of bicycle
2 first chain link plates
2a, 2b, 3a, 3b roller
3 second chain link plates
10 main body portioies
20 first bumps
20a the first surface of contact
20b the second surface of contact
21 first extension parts
22 distal end portions
23 curved parts
23a first portion
The 23b second portion
The 23c third part
24 proximal end
25 first curvature sections
26 convex roller engaging pieces
28 spaces
29 second extension parts
30 second bumps
30a the 3rd surface of contact
31 torsion sections
D the second intended distance
F
1, P
1F
2The power composition
L the first intended distance
Ra, the Rb radius of curvature
W
1, W
2Width
Embodiment
Understand for technical characteristics of the present utility model, purpose and effect being had more clearly, now contrast description of drawings embodiment of the present utility model.
The 1st example
Adopt the chain wear indicator 1 that is used for bicycle of an example of the present utility model, serving as reasons has the plate-like members that the material as stainless rigidity consists of.The structure of the chain wear indicator 1 for bicycle of the present utility model is described referring to Fig. 1 to Fig. 6.The chain wear indicator 1 that is used for bicycle possesses main body portion 10, the first bump 20 and the second bump 30.The first bump 20 extends from main body portion 10.The second bump 30 is in leaving the position of the first intended distance L with the first bump 20 and extending from main body portion 10.
The first intended distance L is the distance in response to predetermined chain link plate number.In roller chain, inner links is connected with interlace mode with outer links.Thereby, preferably with inner links each other or outer links the first bump 20 inserted into each other, the second bump 30, to correctly measuring the elongation degree of chain.For this reason, predetermined chain link plate number is preferably even number.Moreover, the validity when guaranteeing to measure the elongation degree of chain, chain number is The more the better.Therefore, predetermined chain link plate number is preferably more than 10.
On the other hand, when predetermined chain link plate number becomes many, must be used for the length lengthening of the chain wear indicator 1 of bicycle.Yet the chain wear indicator 1 that is used for bicycle is oversize, have working efficiency and reduce, and the problem that uprises of manufacture cost.From viewpoint described above, predetermined chain link plate number preferably is selected among 8,10,12.
The first bump 20 possesses the first surface of contact 20a, the second surface of contact 20b.The first surface of contact 20a pushing is contacted with the chain link plate for the plural number of the chain of bicycle, the roller 2a of the side in the first chain link plate 2.Same, the second surface of contact 20b pushing is contacted with the roller 2b of the opposing party in the first chain link plate 2.
The second bump 30 possesses the 3rd surface of contact 30a.The 3rd surface of contact 30a is contacted with the roller 3b (with reference to Fig. 6) of second chain link plate 3 different from the first chain link plate 2.The second chain link plate 3 and the first chain link plate 2 only leave predetermined chain link plate number.Because predetermined chain link plate number is even number, therefore the first chain link plate 2 and the second chain link plate 3 are all inner links or are all outer links.
The first bump 20 possesses the first extension part 21, the second extension part 29.Be formed with the first surface of contact 20a at the first extension part 21.Be formed with the second contacting part 20b at the second extension part 29.The second 29 of extension parts are between the first extension part 21 and the second bump 30.
The second extension part 29 and the first extension part 21 only leave the second intended distance D.More than the second intended distance D was preferably 0.5mm, better was for more than 0.85mm.The second intended distance D is too little, by the elasticity between the first extension part 21 and the second extension part 29, and can't insert the first chain link plate 2 and really be fixed in the first bump 20.
The first extension part 21 has distal end portion 22 and proximal end 24 and curved part 23.Proximal end 24 is near the part of the first extension part 21 of main body portion 10.Distal end portion 22 is the part apart from main body portion 10 the first extension part 21 farthest.23 of curved parts are between distal end portion 22 and proximal end 24.It is crooked that the first extension part 21 forms the mode parallel with the second extension part 29 in curved part 23.By having shape described above, when the first bump 20 was inserted the first chain link plate 2, the first extension part 21 bent to the direction that makes distal end portion 22 be displaced into the second extension part 29.Thereby the first extension part 21 and the second extension part 29 can flexiblely be toward or away from.
As shown in Figure 1, the first extension part 21 is preferably formed as L shaped.Moreover the first extension part 21 is in the width W of proximal end 24
1Can be compared to most the first extension part 21 in the width W of curved part 23
2Want large.Better is that the first extension part 21 forms taper from proximal end 24 to curved part 23.By this, repeatedly insert the situation of the first bump 20 in the first chain link plate 2, can prevent that the part to proximal end 24 produces plastic deformation from curved part 23.
As shown in Figure 2, the first extension part 21 has first curvature section 25, convex roller engaging piece 26 in distal end portion 22.More than the radius of curvature R a of first curvature section 25 is preferably 1.0mm, more than being more preferred from 4.0mm.As shown in Figure 4, make radius of curvature R a larger, when the first chain link plate 2 inserts the first bump 20, among the power of roller 2a pushing and pressing the first extension part 21, with respect to the power composition F of the direction vertical with direction of insertion
1, be parallel to direction of insertion and as the power composition P of reaction force
1To diminish.Its result, the first extension part 21 bends to the direction that makes distal end portion 22 be displaced into the second extension part 29, and easily the first bump 20 is inserted the first chain link plate 2.
As shown in Figure 3, convex roller engaging piece 26 meshes with roller 2a after the first chain link plate 2 inserts the first extension part 21.By this, in case after the first chain link plate 2 is fixing, even the user supports the first bump 20 and the first chain link plate 2 without hand push, can check also whether the second bump 30 can insert the second chain link plate 3 (with reference to Fig. 6).
As shown in Figure 5, the second bump 30 has torsion section 31, and the radius of curvature R b of torsion section 31 is preferably below 3.0mm, is more preferred from below 2.0mm, and You Jia is below 1.0mm.As shown in Figure 6, make radius of curvature R b less, when the second chain link plate 3 inserts the second bump 30, among the power of roller 3b pushing and pressing the second bump 30, the power composition F of the direction vertical with direction of insertion
2To diminish.Its result, the first extension part 21 is difficult for bending to the direction that makes distal end portion 22 be displaced into the second extension part 29, is difficult for the second bump 30 is inserted the second chain link plate 3 and become.By this, lower the measurement error that the first extension part 21 bendings cause.Therefore, but the replacing of user's correct measurement chain whether arrive period.
The using method that is used for the chain wear indicator of bicycle
Next explanation originally is used for using method of the chain wear indicator 1 of bicycle.At first, as shown in Figure 3, the user inserts the first chain link plate 2 with the first extension part 21.At this moment, with roller 2a engagement, the first surface of contact 20a, the second surface of contact 20b be flexible pushing contact roller 2a respectively, 2b by convex roller engaging piece 26.By this, the first chain link plate 2 is fixed with the state that inserts the first extension part 21.Secondly, the user checks whether the second bump 30 can insert the second chain link plate 3.
If the second bump 30 can insert the situation of the second chain link plate 3, because chain extends because of abrasion, so the user can be judged as YES the replacing period of chain.On the other hand, if the second bump 30 can't insert the situation of the second chain link plate 3, chain does not extend so because of abrasion, and the user can judge can also continue to use chain.
Effect
The effect of the chain wear indicator 1 that is used for bicycle of this example then is described.Be used for the chain wear indicator 1 of bicycle according to this, the direction equidirectional of the roller 2b in the second surface of contact 20b with the second extension part 29 pushes against the first chain link plate 2 produces the power that the second bump 30 pushes against roller 3b.By this, between the second surface of contact 20b and the second bump 30 of the first bump 20, the direction of the second surface of contact 20b pushing and pressing roller of the first extension part 21, with the direction of the 3rd surface of contact 30a pushing and pressing roller of the second bump 30 form identical, the elongation degree of measurement chain that can be correct.Moreover the first surface of contact 2a and the second surface of contact 2b insert two roller 2a in same chain link plate, between 2b, and flexible pushing contact roller 2a, 2b.Thereby, can once namely be fixed the work of chain.Therefore, working efficiency improves.Owing to can making the miniaturization of chain wear indicator, therefore can lower manufacture cost again.
Variation
The variation of this example then is described.In the first example, show that the first extension part 21 forms L shaped situation, but the first extension part 21 also can form as Fig. 7, shown in Figure 8.
In Fig. 7, be provided with circular void 27 between the first extension part 21 and the second extension part 29.Curved part 23 comprises from the nearest 23a of first portion of proximal end 24, member position with the second portion 23b of the position of approximate right angle bending and from the nearest third part 23c of distal end portion 22.The width of the 23a of first portion is shorter than the width of proximal end 24.The width of third part 23c is shorter than the width of distal end portion 22.The width of second portion 23b is longer and also long than the width of third part 23c than the width of first portion 23a.This kind situation, when the first bump 20 was inserted the first chain link plate 2, the 23a of first portion and third part 23c mainly can be crooked.By this, the first extension part 21 bends to the direction that distal end portion 22 is displaced into the second extension part 29.
In Fig. 8, be provided with long-round-shape space 28 between the first extension part 21 and the second extension part 29.The relative proximal end 24 of curved part 23 protrudes from the Y-direction in Fig. 8, to spend large angular bend than 90.This kind situation, when the first bump 20 was inserted the first chain link plate 2, curved part 23 mainly can be crooked.By this, the first extension part 21 bends to the direction that distal end portion 22 is displaced into the second extension part 29.
Again, in the first example, showing the situation that the first bump 20 is made of the first extension part 21 and the second extension part 29, can as being used for as shown in the chain wear indicator 1a of bicycle of Fig. 9, be also the single structure that the first bump 20 comprises the first surface of contact 20a and the second surface of contact 20b.This kind situation, the first chain link plate 2 are not fixed at the state that inserts the first bump 20.Thereby the user will support the first chain link plate 2 with hand push on one side towards the first bump 20 and check on one side when checking whether the second bump 30 can insert the second chain link plate 3.
The above is only the schematic embodiment of the utility model, is not to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification all should belong to the scope that the utility model is protected.
Claims (19)
1. chain wear indicator that is used for bicycle is characterized in that possessing:
Main body portion;
The first bump, this main body portion extends certainly; And
The second bump, in leaving the position of the first intended distance with this first bump, and this main body portion extends certainly, and this first bump has:
The first surface of contact, pushing are contacted with the roller for a side of the first chain link plate among the chain link plate of the plural number of the chain of bicycle; And
The second surface of contact, pushing is contacted with the roller of the opposing party in this first chain link plate,
This second bump has the 3rd surface of contact, is contacted with the roller of second chain link plate different from this first chain link plate.
2. the chain wear indicator for bicycle as claimed in claim 1, is characterized in that, this first bump possesses: the first extension part is formed with this first surface of contact; And second extension part, only leave the second intended distance with this first extension part, and be formed with this second surface of contact.
3. the chain wear indicator for bicycle as claimed in claim 2, is characterized in that, this second extending part is between this first extension part and this second bump.
4. the chain wear indicator for bicycle as claimed in claim 2, is characterized in that, this second intended distance is more than 0.5mm.
5. the chain wear indicator for bicycle as claimed in claim 4, is characterized in that, this second intended distance is more than 0.85mm.
6. the chain wear indicator for bicycle as claimed in claim 2, is characterized in that, this first extension part and this second extension part can flexible being toward or away from.
7. the chain wear indicator for bicycle as claimed in claim 2, is characterized in that, this first extension part has distal end portion and proximal end and curved part.
8. the chain wear indicator for bicycle as claimed in claim 7, is characterized in that, this first extension part forms L shaped.
9. the chain wear indicator for bicycle as claimed in claim 7, is characterized in that, this first extension part is larger at the width of this curved part than this first extension part at this proximal width.
10. the chain wear indicator for bicycle as claimed in claim 9, is characterized in that, this first extension part forms taper from this proximal end to this curved part.
11. the chain wear indicator for bicycle as claimed in claim 1 is characterized in that, this first intended distance is equivalent to predetermined chain link plate and counts length.
12. the chain wear indicator that is used for bicycle as claim 11 is characterized in that this predetermined chain link plate number is more than 10.
13. the chain wear indicator that is used for bicycle as claim 11 is characterized in that this predetermined chain link plate number is 8,10 or 12.
14. the chain wear indicator for bicycle as claimed in claim 7 is characterized in that this first extension part has convex roller engaging piece in this distal end portion.
15. the chain wear indicator for bicycle as claimed in claim 2 is characterized in that, this first extension part has first curvature section, and the radius of curvature of this first curvature section is more than 1.0mm.
16. the chain wear indicator that is used for bicycle as claim 15 is characterized in that, the radius of curvature of this first curvature section is more than 4.0mm.
17. the chain wear indicator for bicycle as claimed in claim 2 is characterized in that, this second bump has torsion section, and the radius of curvature of this torsion section is below 3.0mm.
18. the chain wear indicator that is used for bicycle as claim 17 is characterized in that, the radius of curvature of this torsion section is below 2.5mm.
19. the chain wear indicator that is used for bicycle as claim 17 is characterized in that, the radius of curvature of this torsion section is below 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511938 CN202937726U (en) | 2012-10-08 | 2012-10-08 | Chain abrasion indictor for bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220511938 CN202937726U (en) | 2012-10-08 | 2012-10-08 | Chain abrasion indictor for bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202937726U true CN202937726U (en) | 2013-05-15 |
Family
ID=48321965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220511938 Expired - Fee Related CN202937726U (en) | 2012-10-08 | 2012-10-08 | Chain abrasion indictor for bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202937726U (en) |
-
2012
- 2012-10-08 CN CN 201220511938 patent/CN202937726U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130515 Termination date: 20191008 |