CN106477400A - Tensioning backstop - Google Patents
Tensioning backstop Download PDFInfo
- Publication number
- CN106477400A CN106477400A CN201610982856.2A CN201610982856A CN106477400A CN 106477400 A CN106477400 A CN 106477400A CN 201610982856 A CN201610982856 A CN 201610982856A CN 106477400 A CN106477400 A CN 106477400A
- Authority
- CN
- China
- Prior art keywords
- cam
- backstop
- tensioning
- rotating shaft
- spring
- 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.)
- Pending
Links
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract 1
- 230000033001 locomotion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/113—Size
- B65H2701/1133—Size of webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/50—Storage means for webs, tapes, or filamentary material
Landscapes
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The embodiment of the invention discloses a kind of tensioning backstop, including rotating shaft, bearing pin, cam and the first spring；Wherein, it is installed on bearing pin cam rotation, one end traction action of the first spring is in the top of cam, other end traction action is in outside fixing end, under the traction action of the first spring, the arcwall face of cam is close to the outer surface of rotating shaft, and cam includes long side and minor face, and arcwall face is to the length at bearing pin center from minor face to long side incremented by successively, drive during rotating shaft counter-rotating and make cam around bearing pin by long side direction towards short side direction move and countershaft carry out non-return.The embodiment of the present invention is passed through to propose a kind of tensioning backstop, is close to rotating shaft, and the cam using the prevention rotating shaft counter-rotating of its own structure by arranging elasticity, thus having reached the technique effect of the non-return degree of regulation of raising and flexibility ratio.
Description
Technical field
The present invention relates to mechanical structure field, more particularly, to a kind of tensioning backstop.
Background technology
Adopt ratchet-type non-return structure existing backstop more, there is degree of regulation not, the not high defect of flexibility ratio.
Content of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of tensioning backstop, is adjusted with reaching to improve
Section precision and the technique effect of flexibility ratio.
In order to solve above-mentioned technical problem, the embodiment of the present invention proposes a kind of tensioning backstop, including rotating shaft, pin
Axle, cam and the first spring；
Wherein, it is installed on bearing pin, one end traction action of the first spring is in the top of cam, the other end tractive cam rotation
Act on the fixing end of outside, under the traction action of the first spring, the arcwall face of cam is close to the outer surface of rotating shaft, cam
Including long side and minor face, and arcwall face, to the length at bearing pin center from minor face to long side incremented by successively, carries during rotating shaft counter-rotating
Move and make cam around bearing pin by long side direction towards short side direction move and countershaft carry out non-return.
Further, cam countershaft pressure is N0, pressure N0Pressure on the application point orthogonal direction with rotating shaft for the cam
Component is normal pressure is N, N0When being less than or equal to cam angle of friction corresponding with rotating shaft with the angle γ of N, consequent rub
The effect of wiping power makes rotating shaft be locked out rapidly.
Further, described tensioning backstop also includes the solution lock set in the through hole of external fixator, through hole
Bottom is convexly equipped with top, and solution lock set is located at the short brink of cam, including the body of rod, second spring, button and support block, its
In, button and support the block sheathed top being fixed on the body of rod and bottom respectively, second spring is sheathed on the middle part of the body of rod, and top is supported
In the bottom of button, bottom is butted on top.
Further, the minor face corresponding surface of cam is provided with arc concave surface, supports block and is provided with and mates with arc concave surface
Convex surface.
Further, the diameter with diameter greater than through hole of the press surface at the top of button.
Further, described tensioning backstop also includes the cavity of accommodating rotating shaft and cam, and is fixedly arranged on cavity
Lid, bearing pin is fixedly arranged on cavity inner wall.
Further, the top of cam is convexly equipped with perforation, and the internal face of lid is convexly equipped with fixed column, the fixing end of fixed column
Begin with hanging hole, one end of the first spring is hooked in perforation, and the other end is hooked in hanging hole.
Further, lid is provided with groove, and solution lock set is arranged in groove, and the internal face of lid corresponds to groove position
Put and be also convexly equipped with sliding wall, support block and be provided with and mate with sliding wall and fit in the sliding surface on sliding wall.
The embodiment of the present invention is passed through to propose a kind of tensioning backstop, is close to rotating shaft by arranging elasticity, and utilizes it
Self structure stops the cam of rotating shaft counter-rotating, thus having reached the technique effect of the non-return degree of regulation of raising and flexibility ratio.
Brief description
Fig. 1 is that the button of the tensioning backstop of the embodiment of the present invention is upspring the structural representation of state.
Fig. 2 is the structural representation of the button down state of the tensioning backstop of the embodiment of the present invention.
Fig. 3 is the force analysis schematic diagram of the rotating shaft of the embodiment of the present invention.
Fig. 4 is the structural representation of the tensioning backstop of one embodiment of the invention.
Drawing reference numeral explanation
Rotating shaft 10
Bearing pin 20
Cam 30
Long side 31
Minor face 32
First spring 40
The body of rod 61
Second spring 62
Button 63
Support block 64
Cavity 70
Lid 80
Fixed column 81
Sliding wall 82.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine, with specific embodiment, the present invention is described in further detail below in conjunction with the accompanying drawings.
If directional instruction in the embodiment of the present invention（Such as up, down, left, right, before and after ...）It is only used for explaining at certain
One particular pose（As shown in drawings）Under relative position relation between each part, motion conditions etc., if this particular pose is sent out
During raw change, then directionality instruction also correspondingly changes therewith.
If in addition, the description being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that
Indicate or imply its relative importance or the implicit quantity indicating indicated technical characteristic.Thus, define " first ",
The feature of " second " can be expressed or implicitly include at least one this feature.
Refer to Fig. 1 and Fig. 2, the tensioning backstop of the embodiment of the present invention mainly includes rotating shaft 10, bearing pin 20, cam 30
And first spring 40.
The cross section of rotating shaft 10 is circle, and rotating shaft 10 is wound around non-return curtain tightened in need etc..In this specification, turn
Axle 10 clockwise turns to and rotates forward, and rotate counterclockwise is counter-rotating.
Offer pin-and-hole on cam 30, and be rotatably mounted on outside bearing pin 20 by described pin-and-hole.Cam 30 includes
Long side 31 and minor face 32, and arcwall face is to the length at bearing pin 20 center from minor face 32 to long side 31 incremented by successively, rotating shaft 10 is reverse
Drive during rotation and make cam 30 around bearing pin 20 by long side 31 direction towards minor face 32 direction move and countershaft 10 carry out non-return.Please
In the lump with reference to Fig. 3, specifically, if cam 30 countershaft 10 pressure is N0, pressure N0Orthogonal with the application point of rotating shaft 10 in cam 30
Pressure component on direction is normal pressure is N, N0It is less than or equal to cam 30 angle of friction corresponding with rotating shaft 10 with the angle γ of N
When, consequent frictional force effect makes rotating shaft 10 be locked out rapidly.
One end traction action of the first spring 40 in the top of cam 30, other end traction action in outside fixing end,
Under the traction action of the first spring 40, the arcwall face of cam 30 is close to the outer surface of rotating shaft 10.
Described tensioning backstop also includes solving lock set, solves lock set in the through hole of external fixator, through hole bottom
Portion is convexly equipped with top, and solution lock set is located at minor face 32 side of cam 30.Solution lock set include the body of rod 61, second spring 62, by
Button 63 and support block 64.
Button 63 and support the block 64 sheathed top being fixed on the body of rod 61 and bottom respectively, second spring 62 is sheathed on the body of rod
61 middle part, top is butted on the bottom of button 63, and bottom is butted on top.Specifically, top can be made up of multiple projections,
It is alternatively diameter and be less than second spring 62 diameter and the circular hole face of the diameter more than or equal to the body of rod 61.
As a kind of embodiment, minor face 32 corresponding surface of cam 30 is provided with arc concave surface, support block 64 be provided with
Arc concave surface coupling convex surface, and then, support block 64 can naturally mating reaction in minor face 32 corresponding side surface of cam 30,
Cam 30 rotation is promoted to be unlocked.
As a kind of embodiment, the diameter with diameter greater than through hole of the press surface at the top of button 63；And then, on the one hand
The long stroke of the body of rod 61 is carried out spacing, prevent over-effect, on the other hand, facilitate operator to apply pressure to button 63
Power.
Refer to Fig. 4, as an embodiment, on the basis of above-mentioned embodiment, described tensioning backstop also wraps
Include the cavity 70 of accommodating rotating shaft and cam, and be fixedly arranged on the lid 80 on cavity 70, bearing pin is fixedly arranged on cavity 70 inwall.Enter
And, cover-type structure effectively prevent into ash side by side except bound pair tensioning backstop interference.
The top of cam 30 is convexly equipped with perforation, and one end of the first spring 40 is hooked in perforation；The internal face of lid 80 is convex
It is provided with fixed column 81, the fixing end of fixed column 81 begins with hanging hole, and one end of the first spring 40 is hooked in perforation, another end hook
It is hung in hanging hole.And then, can first spring one end be hooked in cavity 70 during assembling, the other end is hooked in and is covering on lid 80
Lid 80, facilitates the assembling of tensioning backstop.
Lid 80 is provided with groove, and solution lock set is arranged in groove, and the internal face of lid 80 corresponds to groove location also
It is convexly equipped with sliding wall 82, support block 64 and be provided with and mate with sliding wall 82 and fit in the sliding surface on sliding wall 82.And then, sliding
While dynamic wall 82 provides slip place for supporting block 64, provide strong support for supporting block 64, exert a force beneficial to cam,
And the stability of the tensioning backstop device structure that ensure that.
The tensioning backstop operation principle of the embodiment of the present invention is：During normality, under the traction action of the first spring 40,
The arcwall face of cam 30 is close to the outer surface of rotating shaft 10.
When rotating shaft 10 rotates forward clockwise, curtain thereon can be wound operate；Rotating shaft 10 drives simultaneously simultaneously
So that cam 30 is moved towards long side 31 direction by minor face 32 direction around bearing pin 20, resistance will not be produced by countershaft 10, or, the body of rod 61
It is pressed down, is in released state, also will not produce resistance by countershaft 10.
When rotating shaft 10 is intended to counter-rotating counterclockwise, can drive and make cam 30 around bearing pin 20 by long side 31 direction towards minor face
32 directions motions and countershaft 10 carry out non-return, and then prevent the curtain tightened from being loosened；Now if desired curtain is carried out
Loosen, then press the button 63 by operator, so that top is acted in the obverse arc concave surface of minor face 32, and then make convex
Wheel 30 around bearing pin 20 by minor face 32 direction towards long side 31 direction motion predetermined angular, the appearance of the arcwall face of cam 30 and rotating shaft 10
Emaciated face from, rotating shaft 10 in the case of no external resistance counter-rotating and loosening operation is carried out to curtain.
To sum up, the tensioning backstop of the embodiment of the present invention at least have with respect to traditional ratchet-type non-return structure as follows
Beneficial effect：
1. stepless locking can be realized, higher degree of regulation can be reached, flexibility ratio is higher.
2. the noise producing is less.
3. structure is simple, and difficulty of processing is low, low cost.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention limits by claims and its equivalency range.
Claims (8)
1. a kind of tensioning backstop is it is characterised in that described tensioning backstop includes rotating shaft, bearing pin, cam and the first bullet
Spring；
Wherein, it is installed on bearing pin, one end traction action of the first spring is in the top of cam, the other end tractive cam rotation
Act on the fixing end of outside, under the traction action of the first spring, the arcwall face of cam is close to the outer surface of rotating shaft, cam
Including long side and minor face, and arcwall face, to the length at bearing pin center from minor face to long side incremented by successively, carries during rotating shaft counter-rotating
Move and make cam around bearing pin by long side direction towards short side direction move and countershaft carry out non-return.
2. tensioning backstop as claimed in claim 1 is it is characterised in that cam countershaft pressure is N0, pressure N0In cam
With the pressure component on the application point orthogonal direction of rotating shaft be normal pressure be N, N0It is less than or equal to cam and turns with the angle γ of N
During the corresponding angle of friction of axle, consequent frictional force effect makes rotating shaft be locked out rapidly.
3. tensioning backstop as claimed in claim 1 is it is characterised in that described tensioning backstop is also included located at outside
Solution lock set in the through hole of fixture, via bottoms are convexly equipped with top, and solution lock set is located at the short brink of cam, including bar
Body, second spring, button and support block, wherein, button and support the block sheathed top being fixed on the body of rod and bottom respectively, second
Located at the middle part of the body of rod, top is butted on the bottom of button to spring housing, and bottom is butted on top.
4. tensioning backstop as claimed in claim 3 is it is characterised in that the minor face corresponding surface of cam is provided with arc concave shape
Face, is supported block and is provided with the convex surface being mated with arc concave surface.
5. tensioning backstop as claimed in claim 3 it is characterised in that the press surface at the top of button with diameter greater than logical
The diameter in hole.
6. tensioning backstop as claimed in claim 3 is it is characterised in that described tensioning backstop also includes accommodating rotating shaft
With the cavity of cam, and it is fixedly arranged on the lid on cavity, bearing pin is fixedly arranged on cavity inner wall.
7. tensioning backstop as claimed in claim 6 is it is characterised in that the top of cam is convexly equipped with perforation, lid interior
Wall is convexly equipped with fixed column, and the fixing end of fixed column begins with hanging hole, and one end of the first spring is hooked in perforation, another end hook
It is hung in hanging hole.
8. it is characterised in that lid is provided with groove, solution lock set is arranged in tensioning backstop as claimed in claim 6
In groove, the internal face of lid is also convexly equipped with sliding wall corresponding to groove location, supports block and is provided with and mates with sliding wall and paste
Together in the sliding surface on sliding wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610982856.2A CN106477400A (en) | 2016-11-07 | 2016-11-07 | Tensioning backstop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610982856.2A CN106477400A (en) | 2016-11-07 | 2016-11-07 | Tensioning backstop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106477400A true CN106477400A (en) | 2017-03-08 |
Family
ID=58271888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610982856.2A Pending CN106477400A (en) | 2016-11-07 | 2016-11-07 | Tensioning backstop |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106477400A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881624A (en) * | 1987-07-02 | 1989-11-21 | Etablissements Georges Klein | Angular anti-return devices associated with turnstiles |
| CN201221929Y (en) * | 2008-05-19 | 2009-04-15 | 吴其联 | Band tape with brake |
| CN202579737U (en) * | 2012-04-06 | 2012-12-05 | 北京实宝来游乐设备有限公司 | Cam anti-receding device |
| CN204961632U (en) * | 2015-08-31 | 2016-01-13 | 徐挺 | Archimedes spiral profile voussoir holdback |
| CN206188135U (en) * | 2016-11-07 | 2017-05-24 | 深圳市维骏文化旅游科技有限公司 | Tensioning backstop |
-
2016
- 2016-11-07 CN CN201610982856.2A patent/CN106477400A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4881624A (en) * | 1987-07-02 | 1989-11-21 | Etablissements Georges Klein | Angular anti-return devices associated with turnstiles |
| CN201221929Y (en) * | 2008-05-19 | 2009-04-15 | 吴其联 | Band tape with brake |
| CN202579737U (en) * | 2012-04-06 | 2012-12-05 | 北京实宝来游乐设备有限公司 | Cam anti-receding device |
| CN204961632U (en) * | 2015-08-31 | 2016-01-13 | 徐挺 | Archimedes spiral profile voussoir holdback |
| CN206188135U (en) * | 2016-11-07 | 2017-05-24 | 深圳市维骏文化旅游科技有限公司 | Tensioning backstop |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20231117 |
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| AD01 | Patent right deemed abandoned |