CN207523880U - Bicycle chain stretcher - Google Patents
Bicycle chain stretcher Download PDFInfo
- Publication number
- CN207523880U CN207523880U CN201721448494.5U CN201721448494U CN207523880U CN 207523880 U CN207523880 U CN 207523880U CN 201721448494 U CN201721448494 U CN 201721448494U CN 207523880 U CN207523880 U CN 207523880U
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- mounting bracket
- wheel frame
- bicycle chain
- guide wheel
- wheel
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Abstract
The utility model provides a kind of bicycle chain stretcher, wherein, including coupking shaft, fixation kit and stretching unit, fixation kit includes activity and presss from both sides, stretching unit includes mounting bracket, guide wheel assembly and elastic component, mounting bracket is connected with activity folder, guide wheel assembly includes guide wheel and wheel frame, guide wheel is rotatably coupled around the axis of itself with wheel frame, wheel frame is slidably connected along the axial direction of coupking shaft with mounting bracket, coupking shaft is slidably connected along the axial direction of itself with mounting bracket, coupking shaft passes through activity folder and mounting bracket, coupking shaft is abutted with wheel frame, elastic component is connected between wheel frame and mounting bracket, and elastic component and coupking shaft are located at the both sides of wheel frame respectively.The bicycle chain stretcher have the advantages that it is simple in structure, convenient for safeguard, failure rate is low, service life is long and functional reliability is good.
Description
Technical field
The utility model is related to bicycle assembly parts technical field, specifically, being to be related to a kind of bicycle chain stretcher.
Background technology
At present, the chain overwhelming majority of bicycle on the market is not provided with tensioning apparatus, this causes bicycle riding
After long period, chain easily relaxes, and causes to come off in the easy accessary sprocket wheel of chain in ride, be caused not to riding
Just, for especially for the big bicycle of this kind of usage frequency of public bicycles, chain relaxation show with to be apparent and
Bicycle chain is caused to frequently occur situation about falling in ride, great inconvenience is brought to ride.
In view of the above-mentioned problems, utility model patent CN201420605882.X discloses a kind of bicycle chain stretcher,
The tensioning apparatus of the bicycle chain stretcher mainly include one end using stretcher axis install on a mounting board, strip
Chain tray, the front-end and back-end of chain tray are respectively provided with curved profile, equal at the edge of chain tray madial wall and lateral wall
Equipped with integrally formed wing plate, the slideway of bicycle chain is formed between wing plates on two sides.
Although the bicycle chain stretcher can prevent chain from falling to a certain extent, the bicycle chain
In use, the ramp surface on the chain tray of the opposite tensioning apparatus of bicycle chain meeting slides tight device so that chain
With chain tray rub for a long time, the not only service life of shortening chains and chain tray, but also reduce the biography of chain
Pass efficiency.Also, when bicycle chain is operated on chain tray, although bicycle chain can be by chain tray both sides
The limiting of wing plate is without coming off, but the wing plate that both sides extend on the chain tray also increases the structure of chain tray simultaneously
Complexity causes when being manufactured to chain tray, and manufacture difficulty is higher.In addition, existing bicycle chain stretcher
Equal generally existing is complicated, it is cumbersome for installation, high failure rate and maintenance maintenance are inconvenient the shortcomings that.
Invention content
To solve the above-mentioned problems, the main purpose of the utility model be to provide it is a kind of it is simple in structure, convenient for safeguarding, failure
The bicycle chain stretcher that rate is low, service life is long and functional reliability is good.
To solve the above-mentioned problems, the utility model provides a kind of bicycle chain stretcher, wherein, including coupking shaft,
Fixation kit and stretching unit, fixation kit include activity and press from both sides, and stretching unit includes mounting bracket, guide wheel assembly and elastic component,
Mounting bracket is connected with activity folder, and coupking shaft passes through activity folder and mounting bracket, axial direction and mounting bracket of the coupking shaft along itself
It is slidably connected, guide wheel assembly includes guide wheel and wheel frame, and guide wheel is rotatably coupled with wheel frame around the axis of itself, leads
Wheel carrier is slidably connected along the axial direction of coupking shaft with mounting bracket, and coupking shaft is abutted with wheel frame, and elastic component is connected to guide wheel
Between frame and mounting bracket, and elastic component and coupking shaft are located at the both sides of wheel frame respectively.
Therefore the guide wheel of guide wheel assembly is used to be engaged with bicycle chain, and guide wheel assembly can pass through
Wheel frame is slided relative to mounting bracket, and elastic component is used to provide preload of the guide wheel assembly needed for respect to mounting bracket slip
Power so that bicycle chain stretcher need not carry out adjustment in the long-term use, and also ensure that bicycle chain is tensioned
The stable operation of device.It comes off, drops in the process of running in addition, the wheel frame of guide wheel assembly is also prevented from bicycle chain
The failure rate of low bicycle chain stretcher, and promote the portability ridden.And coupking shaft is set so that coupking shaft can be to bullet
The pretightning force of property part is adjusted, so that bicycle chain stretcher disclosure satisfy that the demand of different user group.As it can be seen that pass through
Setting and structure design to the bicycle chain stretcher so that the bicycle chain stretcher have it is simple in structure, be convenient for
It safeguards, the advantages of failure rate is low, service life is long and functional reliability is good.
One Preferable scheme is that, mounting bracket is provided with the first limiting slot, guide wheel group along the axially extending of coupking shaft
Part further includes guide wheel shaft, and guide wheel shaft passes through guide wheel and wheel frame, and the first end of guide wheel shaft is located in the first limiting slot.
Therefore setting guide wheel shaft so that guide wheel can be mounted on by guide wheel shaft on wheel frame, and in mounting bracket
The first limiting slot of upper setting simultaneously makes the first end of guide wheel shaft be located in the first limiting slot, the phase that wheel frame can be made relatively reliable
Mounting bracket is slided, and position-limiting action is played to wheel frame, wheel frame is prevented to be detached from mounting bracket, and is prevented
Bicycle chain comes off in the process of running, further reduced failure rate.
Further embodiment is that the axial direction of mounting bracket along coupking shaft is provided with the second limiting slot, wheel frame with also extending
The extension of second limiting slot is provided with limited post, limited post is located in the second limiting slot.
Therefore the second limiting slot in mounting bracket is set and limited post is set on wheel frame, and makes limiting
Column is located in the second limiting slot, the slidable connection that can be further ensured that between wheel frame and mounting bracket, and further right
Wheel frame plays position-limiting action, prevents wheel frame opposite mounting bracket in moving process from rotating, ensures bicycle chain
The reliability of the work of stretcher, further reduced failure rate.
Another Preferable scheme is that, wheel frame is being provided with positioning region, mounting bracket direction far from the side of coupking shaft
Limiting section is provided with to positioning region extension, the both ends of elastic component are connect respectively with positioning region, limiting section.
Therefore positioning region on wheel frame is set and limiting section is set in mounting bracket, enabling to bullet
Property part positioned, prevent bicycle chain stretcher in use elastic component be detached from wheel frame, mounting bracket company
It connects, ensure that the reliability of the work of bicycle chain stretcher.
Further embodiment is, mounting bracket is set towards wheel frame extension there are two backplate positioned opposite, two
Backplate is located at the both sides of limiting section respectively, and two backplates and the ontology of mounting bracket surround an accommodating chamber, and elastic component is located at
In accommodating chamber.
Therefore backplate is added in the both sides of limiting section, it can further prevent bicycle chain stretcher from making
With being hit by a bullet property of process part be detached from the connection of wheel frame, mounting bracket, ensure that bicycle chain stretcher work it is reliable
Property.
Another Preferable scheme is that, the distance between the axis of guide wheel and the first end of wheel frame be more than guide wheel axis
The distance between second end of wheel frame, and the first end of wheel frame is abutted with coupking shaft.
Therefore by the setting to guide wheel and the relative position of wheel frame, it can effectively reduce bicycle chain
The volume of stretcher, and then reduce the installation space needed for bicycle chain stretcher.
Another Preferable scheme is that, floating holder has connecting portion and clamping part, the second end and connecting portion of clamping part
It is fixedly connected, opening is formed between the third end of clamping part and connecting portion, fixation kit further includes fishbolt, fishbolt
It is connected between the second end and third end.
Further embodiment is that activity folder is made of elastic material.
Therefore when being installed to bicycle chain stretcher, the third end of the clamping part of activity folder is pushed aside,
Enable bicycle rear cross beam between third end and connecting portion opening be packed into clamping part in, and fishbolt for pair
The second end of clamping part and third end are fixed, clamp, and realize the clamping to bicycle rear cross beam, and then by bicycle
Chain tensioning device is fixedly mounted on vehicle.
Further scheme is that the range that wheel frame can be slided with respect to mounting bracket is 5 millimeters to 10 millimeters.
Further scheme is that the range that wheel frame can be slided with respect to mounting bracket is 6 millimeters to 8 millimeters.
Therefore wheel frame can be tensioned the bicycle chain of different slacknesses under the action of elastic component,
Ensure that bicycle chain has enough tensile forces, and then ensure that bicycle chain is not in come off in the process of running, protect
The normal of card bicycle is ridden.
Description of the drawings
Fig. 1 is the structure chart of the utility model bicycle chain tensioner embodiment.
Fig. 2 is the structure chart under another visual angle of the utility model bicycle chain tensioner embodiment.
Fig. 3 is the sectional view of the utility model bicycle chain tensioner embodiment.
The utility model is described in further detail with reference to the accompanying drawings and embodiments.
Specific embodiment
Referring to figs. 1 to Fig. 3, bicycle chain stretcher 100 includes coupking shaft 1, fixation kit 2 and stretching unit 3.
Fixation kit 2 includes activity folder 21 and fishbolt 22, and activity presss from both sides 21 for being connect with bicycle rear cross beam, and then
It realizes and bicycle chain stretcher 100 is mounted on vehicle, activity folder 21 has connecting portion 211 and clamping part 212,
Connecting portion 211 is used to be fixedly connected with the mounting bracket 31 of stretching unit 3.The second end 2121 and connecting portion of clamping part 212
211 are fixedly connected, and opening is formed between the third end 2122 of clamping part 212 and connecting portion 211, and fishbolt 22 is connected to folder
It holds on the second end 2121 and third end 2122 in portion 212, passes through the dismounting to fishbolt 22 so that clamping part 212
Opening between third end 2122 and connecting portion 211 carries out open or close, and then realizes and be mounted on bicycle rear cross beam
On clamping part 212.Specifically, when being installed to bicycle chain stretcher 100, unscrew fishbolt 22, release and clamp
Bolt 22 and the connection of the third end 2122 of clamping part 212 then, push the third end of the clamping part 212 of activity folder 21 aside
2122 so that the opening that bicycle rear cross beam can be between third end 2122 and connecting portion 211 is packed into clamping part 212,
Then fishbolt 22 is tightened so that fishbolt 22 is attached, and then right again with the third end 2122 of clamping part 212
The second end 2121 of clamping part 212 and third end 2122 are fixed, clamp, and realize the clamping to bicycle rear cross beam,
And then bicycle chain stretcher 100 is fixedly mounted on vehicle.Preferably, activity folder 21 is by elastic material system
Into.
Stretching unit 3 includes mounting bracket 31, guide wheel assembly 32 and elastic component 33.Wherein, guide wheel assembly 32 includes guide wheel
321st, wheel frame 322 and guide wheel shaft 323, guide wheel 321 are rotationally connect around the axis of itself with wheel frame 322, specifically, guide wheel
Axis 323 passes through guide wheel 321 and wheel frame 322, and guide wheel 321 is mounted on guide wheel shaft 323 so that guide wheel 321 can be around itself axis
Line rotates on guide wheel shaft 323.Preferably, the distance between the axis of guide wheel 321 and the first end of wheel frame 322 H are more than and lead
The distance between the second end of axis and the wheel frame 322 of wheel 321 h, i.e., between the top of guide wheel 321 and wheel frame 322 away from
From the distance between bottom more than guide wheel 321 and wheel frame 322.As it can be seen that by the opposite of guide wheel 321 and wheel frame 322
The setting of position can effectively reduce the volume of bicycle chain stretcher 100, and then reduce bicycle chain stretcher
Installation space needed for 100, and chain is facilitated to be engaged with guide wheel 321.
Coupking shaft 1 passes through the connecting portion 211 of activity folder 21 and mounting bracket 31, and axial direction and peace of the coupking shaft 1 along itself
Dress stent 31 is slidably connected.Preferably, coupking shaft 1 passes through screw thread at least one of activity folder 21, mounting bracket 31
Connection.Wheel frame 322 is slidably connected, and the end of coupking shaft 1 and wheel frame along the axial direction of coupking shaft 1 with mounting bracket 31
322 adjoinings.Specifically, mounting bracket 31 is provided with the first limiting slot 311, guide wheel assembly 32 along the axially extending of coupking shaft 1
The first end of guide wheel shaft 323 be located in the first limiting slot 311.By setting the first limiting slot 311 in mounting bracket 31
And the first end of guide wheel shaft 323 is made to be located in the first limiting slot 311, the opposite installation that wheel frame 322 is relatively reliable can be made
Stent 31 is slided, and plays position-limiting action to wheel frame 322, and wheel frame 322 is prevented to be detached from mounting bracket 31, and
It prevents bicycle chain from coming off in the process of running, further reduced failure rate.
Preferable scheme is that the axial direction of mounting bracket 31 along coupking shaft 1 is additionally provided with the second limiting slot 312, and wheel frame
322 are provided with limited post 3222 towards the extension of the second limiting slot 312, and limited post 3222 is located in the second limiting slot 312.It can
See, by setting the second limiting slot 312 in mounting bracket 31 and limited post 3222 being set on wheel frame 322, and make limiting
Column 3222 is located in the second limiting slot 312, can be further ensured that slidably connecting between wheel frame 322 and mounting bracket 31
It connects, and position-limiting action further is played to wheel frame 322, prevent the opposite mounting bracket 31 in moving process of wheel frame 322 from sending out
Raw rotation, ensures the reliability of the work of bicycle chain stretcher 100, further reduced failure rate.Preferably, the first limit
The extended line that position 311 and second limiting slot 312 of slot is located at is located on same line, and the first limiting slot 311 and the second limiting slot
312 structure sizes are identical.
Elastic component 33 is connected between wheel frame 322 and mounting bracket 31, and elastic component 33 and coupking shaft 1 respectively be located at lead
The both sides of wheel carrier 322.Specifically, wheel frame 322 is provided with positioning region 3221, mounting bracket 31 in the side far from coupking shaft 1
Limiting section 313, and 313 coaxial line of positioning region 3221 and limiting section are provided with towards the positioning region 3221 of wheel frame 322 with extending
Setting, the both ends of elastic component 33 are connect respectively with positioning region 3221 and limiting section 313.Elastic component 33 is used to provide guide wheel assembly 32
Required pretightning force is slided with respect to mounting bracket 31 so that bicycle chain stretcher 100 in the long-term use without into
Row adjustment, and also ensure the stable operation of bicycle chain stretcher 100.And positioning region 3221 is set on wheel frame 322
And limiting section 313 is set in mounting bracket 31, elastic component 33 can be positioned, prevent bicycle chain stretcher
100 disengaging of elastic component 33 and the connections of wheel frame 322, mounting bracket 31 in use, ensure that bicycle chain is tensioned
The reliability of the work of device 100.
Preferably, mounting bracket 31 is set towards the extension of wheel frame 322 there are two backplate 314 positioned opposite, two
Backplate 314 is located at the both sides of limiting section 313 respectively, and two backplates 314 and the ontology of mounting bracket 31 surround an accommodating chamber
315, one end of elastic component 33 is located in accommodating chamber 315.Backplate is added in the both sides of limiting section 313, can further be prevented
Elastic component 33 is detached from the connection with wheel frame 322, mounting bracket 31 to bicycle chain stretcher 100 in use, ensures
The reliability of the work of bicycle chain stretcher 100.
As shown in figure 3, in order to ensure that guide wheel assembly 32 can more reliably opposite mounting bracket 31 slide, can pass through
The nut for adjusting 323 end of guide wheel shaft is adjusted, and the pretightning force between guide wheel shaft 323 and mounting bracket 31 is adjusted,
Ensure fluency when guide wheel assembly 32 slides relatively with mounting bracket 31.In addition, the first end of coupking shaft 31 and wheel frame 322
It is adjacent, and 33 connecting seat of elastic component is between the second end of wheel frame 322 and mounting bracket 31, and elastic component 33 is used to lead
The slip of wheel assembly 32 provides pretightning force, it is possible to by adjusting coupking shaft 1, make coupking shaft 1 along itself axially opposing installation
Stent 31 slides, so that coupking shaft 1 pushes guide wheel assembly 32 to slide and carries out compressed energy-storage to elastic component 33, and then to bullet
Property part 33 pretightning force be adjusted, promote stability when bicycle chain stretcher 100 works, prevent bicycle chain from existing
It is too tight or too loose in operational process, so as to ensure the transmission efficiency of bicycle chain and bicycle chain is avoided to go out in operation
It now comes off, reduces the failure rate of bicycle chain operation, and, additionally it is possible to so that bicycle chain stretcher 100 disclosure satisfy that
The demand of different clients group.
In addition, the range that wheel frame 322 can be slided with respect to mounting bracket 31 is 5 millimeters to 10 millimeters.Preferably, it leads
The range that wheel carrier 322 can be slided with respect to mounting bracket 31 is 6 millimeters to 8 millimeters.By to wheel frame 322 and mounting bracket
The setting of opposite sliding stroke between 31 so that wheel frame 322 can be under the action of elastic component 33 to different slacknesses
Bicycle chain is tensioned, and ensures that bicycle chain has enough tensile forces, and then ensure that bicycle chain was being run
Be not in come off in journey, ensure that the normal of bicycle is ridden.
By said program as it can be seen that the utility model passes through the setting to bicycle chain stretcher and structure design so that
The bicycle chain stretcher have it is simple in structure, convenient for safeguarding, that failure rate is low, service life is long and functional reliability is good is excellent
Point.
Finally it is emphasized that the above is only the preferred embodiment of the present invention, it is not limited to this reality
With novel, for those skilled in the art, the utility model can have various change and change, all in the utility model
Spirit and principle within, any modification, equivalent substitution, improvement and etc. done should be included in the protection model of the utility model
Within enclosing.
Claims (10)
1. bicycle chain stretcher, which is characterized in that including：
Coupking shaft；
Fixation kit, the fixation kit include activity and press from both sides；
Stretching unit, the stretching unit include mounting bracket, guide wheel assembly and elastic component, the mounting bracket and the activity
Folder connection, the coupking shaft pass through the activity folder and the mounting bracket, and the coupking shaft is along the axial direction of itself and the peace
Dress stent is slidably connected, and the guide wheel assembly includes guide wheel and wheel frame, and the guide wheel is led around the axis of itself with described
Wheel carrier is rotatably coupled, and the wheel frame is slidably connected along the axial direction of the coupking shaft with the mounting bracket, described
Coupking shaft is abutted with the wheel frame, and the elastic component is connected between the wheel frame and the mounting bracket, and the bullet
Property part and the coupking shaft respectively be located at the wheel frame both sides.
2. bicycle chain stretcher according to claim 1, it is characterised in that：
The mounting bracket is provided with the first limiting slot along the axially extending of the coupking shaft；
The guide wheel assembly further includes guide wheel shaft, and the guide wheel shaft passes through the guide wheel and the wheel frame, and the guide wheel shaft
First end be located in first limiting slot.
3. bicycle chain stretcher according to claim 2, it is characterised in that：
The mounting bracket is provided with the second limiting slot along the axially extending of the coupking shaft；
The wheel frame is provided with limited post with extending towards second limiting slot, and the limited post is located at the described second limiting
In slot.
4. bicycle chain stretcher according to claim 1, it is characterised in that：
The wheel frame is provided with positioning region in the side far from the coupking shaft；
The mounting bracket is provided with limiting section with extending towards the positioning region, the both ends of the elastic component respectively with it is described fixed
Position portion, limiting section connection.
5. bicycle chain stretcher according to claim 4, it is characterised in that：
The mounting bracket is set towards the wheel frame there are two backplate positioned opposite with extending, and two backplates are distinguished
Positioned at the both sides of the limiting section, and two backplates and the ontology of the mounting bracket surround an accommodating chamber, the bullet
Property part is located in the accommodating chamber.
6. bicycle chain stretcher according to claim 1, it is characterised in that：
The distance between the axis of the guide wheel and the first end of the wheel frame are more than the axis of the guide wheel and the guide wheel
The distance between second end of frame, and the first end of the wheel frame is abutted with the coupking shaft.
7. bicycle chain stretcher according to claim 1, it is characterised in that：
The floating holder has connecting portion and clamping part, and the second end of the clamping part is fixedly connected with the connecting portion, institute
It states and opening is formed between the third end of clamping part and the connecting portion；
The fixation kit further includes fishbolt, the fishbolt be connected to the second end and the third end it
Between.
8. bicycle chain stretcher according to claim 7, it is characterised in that：
The activity folder is made of elastic material.
9. according to claim 1 to 8 any one of them bicycle chain stretcher, it is characterised in that：
The wheel frame can the mounting bracket is slided relatively range be 5 millimeters to 10 millimeters.
10. bicycle chain stretcher according to claim 9, it is characterised in that：
The wheel frame can the mounting bracket is slided relatively range be 6 millimeters to 8 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721448494.5U CN207523880U (en) | 2017-11-01 | 2017-11-01 | Bicycle chain stretcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721448494.5U CN207523880U (en) | 2017-11-01 | 2017-11-01 | Bicycle chain stretcher |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207523880U true CN207523880U (en) | 2018-06-22 |
Family
ID=62572184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721448494.5U Active CN207523880U (en) | 2017-11-01 | 2017-11-01 | Bicycle chain stretcher |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207523880U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI741676B (en) * | 2020-07-14 | 2021-10-01 | 桂盟企業股份有限公司 | Tensioner |
-
2017
- 2017-11-01 CN CN201721448494.5U patent/CN207523880U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI741676B (en) * | 2020-07-14 | 2021-10-01 | 桂盟企業股份有限公司 | Tensioner |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 519000 building B-2, No. 8, Honghui fifth road, Shuanglin District, LIANGANG Industrial Zone, Jinwan District, Zhuhai City, Guangdong Province Patentee after: Zhuhai Blueprint Sports Technology Co.,Ltd. Address before: 519090 room 312-43, third floor, aviation new town planning exhibition hall, Jinwan District, Zhuhai City, Guangdong Province Patentee before: ZHUHAI LTWOO CONTROLLER TECHNOLOGY CO.,LTD. |
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| CP03 | Change of name, title or address |