CN2713224Y - Tensioning structure - Google Patents
Tensioning structure Download PDFInfo
- Publication number
- CN2713224Y CN2713224Y CN 200420037701 CN200420037701U CN2713224Y CN 2713224 Y CN2713224 Y CN 2713224Y CN 200420037701 CN200420037701 CN 200420037701 CN 200420037701 U CN200420037701 U CN 200420037701U CN 2713224 Y CN2713224 Y CN 2713224Y
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- Prior art keywords
- tensioning
- utility
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- square
- tensioner
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- Expired - Fee Related
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Abstract
The utility model relates to a tensioning structure, which generates tensioning force for tensioning the easily loose driving piece such as chains, etc. on the tensioning apparatus. The utility model comprises a square sleeve, a square core and tensioning elements extruded in four triangle hollow cavities which are formed between the square sleeve and the square core. The utility model is characterized in that the tensioning elements are tensioning springs, every tensioning spring has a supporting side and two elastic ends which are extended from the supporting side which leans against the outer wall of the square core, and at least one elastic end is supported on the inner wall of the square sleeve. A pressing plate which is controlled by a regulating piece is pressed on at least one tensioning spring. The utility model can alter the pretightening force by various regulating modes. The tensioning elements have the better elasticity and ageing resistance than the rubber cushion strip and have longer service life of impact resistance and better effect of vibration damping. The utility model has simple structure and convenient installation and easily ensures the accuracy of the structure.
Description
[technical field]
The utility model is a kind of Tensioning structure, is used on the belt tensioner to produce the expanding force that easily lax driving components such as chain is carried out tensioner.
[background technique]
In the mechanical transmission course, driving components such as chain are easily lax, bear alternate load, have suitable impact force and vibration, need carry out tensioner (expansion tightening wheel of belt tensioner being supported on the slack side of driving components such as chain with certain expanding force) to them, with vibration damping and locking.
Originally as shown in Figure 1 in order to the Tensioning structure that produces expanding force, its side of comprising cover A3, square core A2 and be squeezed in tensioner element A1 in four triangular cavities that are formed between the two, described tensioner element is the rubber filler strip, during work, square core phase the other side is overlapped rotate extruding rubber filler strip, the distortion of rubber filler strip produces the resistance moment of torsion, utilize this resistance moment of torsion that the expansion tightening wheel of belt tensioner is supported on the chain with certain pretightening force F, prevent that chain is lax, reduces chain vibration; This shows that the pretightening force of expansion tightening wheel depends on that elasticity, the belt tensioner of rubber filler strip itself assemble the back extruded degree of rubber filler strip and overlap the degree that makes the distortion of rubber filler strip of rotating by square core phase the other side.Therefore, in a single day the belt tensioner that assembles installs and fixes, and just is difficult to regulate its pretightening force again; After assembling was finished, the cylindrical of rubber filler strip contacted with side's cover, square core, and distortion (distortion) ability is little, can not obtain bigger pretightening force by increasing its degreeof tortuosity; In order to increase the pretension ability of belt tensioner, often when assembling, select the rubber filler strip of big specification for use, there is the difficulty of fit on; And the easy ageing failure of rubber filler strip, reduce self elasticity; The shock-resistant life-span is shorter, only has 7000 hours, and effectiveness in vibration suppression is relatively poor, and the chain minimum amplitude only reaches 22 millimeters.
[model utility content]
The technical assignment of the technical problems to be solved in the utility model and proposition is the defective that overcomes in the existing technology, and a kind of new Tensioning structure is provided.For this reason, the utility model is taked following technical proposals:
A kind of Tensioning structure, tensioner element in four triangular cavities that the side's of comprising cover, square core and being squeezed in is formed between the two, it is characterized in that described tensioner element is the tensioner spring, each tensioner spring has a support edge and two extended elastic tip from the support edge, its support edge leans against the outer wall of square core, on the inwall of at least one the elastic tip side of being supported on cover; One pressing plate by adjusting element control is pressed at least one tensioner spring.Tensioner element in this structure has the elasticity, distortion (distortion) ability and the ageing resistance that are better than the rubber filler strip by the distortion generation effect of its relative support edge of elastic tip; During assembling, can select specification identical but tensioner element that elasticity is different can not increase assembling difficulty because of increasing elasticity; In the working procedure, the position of regulating pressing plate by adjusting element can change the extruded degree of tensioner element, thereby the change expansion tightening wheel is supported on the pretightening force on the chain; And, when mounted, can make square core phase the other side be enclosed within the bigger angular range rotation and obtain required pretightening force because the tensioner spring has stronger distortion (distortion) ability and the tensioner spring has bigger deformation space; The shock-resistant life-span is longer, and effectiveness in vibration suppression is better.
Described Tensioning structure is characterized in that the screw rod of described adjusting element for putting by the side of being threaded in.By adjusting screw rod, can be at the relatively rotate deformation extent of scope in arbitrarily regulating tensioner element of square core, so that expansion tightening wheel is supported on the chain with comparatively suitable pretightening force with side's cover.
The utility model is compared with existing technical scheme, and its tensioner element has elasticity and the ageing resistance that is better than the rubber filler strip, can regulate the change pretightening force in several ways; And the shock-resistant life-span is longer, and effectiveness in vibration suppression is better; It is simple in structure, is convenient to install, and easily guarantees the accuracy of its structure.
[description of drawings]
Fig. 1 is the schematic representation of existing Tensioning structure.
Fig. 2 is a structural representation of the present utility model.
[embodiment]
Tensioning structure shown in Figure 2, the side of comprising cover B3, square core B2, tensioner spring B 1 and adjusting part, wherein:
Tensioner spring B 1 roughly is the triangle of opening, comprises a support edge B11 and two extended elastic tip B12 from the support edge;
Adjusting part comprises by screw rod B5 on the side of the being threaded in cover B3 and the pressing plate B4 in the side's of being positioned at cover, and the rotating the inner that is connected screw rod of pressing plate;
Under the assembling condition, form four triangular cavities between the square inner bore of square square core and side's cover and the pressing plate; Each triangular cavity is built-in with a tensioner spring, by adjusting screw rod, makes pressing plate extruding tensioner spring, and the support edge of tensioner spring leans against on the outer wall of square square core, and the elastic tip of tensioner spring is supported on the hole wall of square inner bore or on the pressing plate.
After measured, the relatively rotating angle and can reach 40 ° of the side cover of this Tensioning structure and square core, its shock-resistant life-span reaches 30000 hours, and good damping result, chain minimum amplitude reach 10 millimeters.
Claims (2)
1, a kind of Tensioning structure, tensioner element (B1) in four triangular cavities that the side's of comprising cover (B3), square core (B2) and being squeezed in is formed between the two, it is characterized in that described tensioner element (B1) is the tensioner spring, each tensioner spring has a support edge (B11) and two extended elastic tip (B12) from the support edge, its support edge leans against the outer wall of square core, on the inwall of at least one the elastic tip side of being supported on cover; One pressing plate (B4) by adjusting element (B5) control is pressed at least one tensioner spring.
2, Tensioning structure according to claim 1 is characterized in that the screw rod of described adjusting element (B5) for putting by the side of being threaded in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420037701 CN2713224Y (en) | 2004-07-14 | 2004-07-14 | Tensioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420037701 CN2713224Y (en) | 2004-07-14 | 2004-07-14 | Tensioning structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2713224Y true CN2713224Y (en) | 2005-07-27 |
Family
ID=34871711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420037701 Expired - Fee Related CN2713224Y (en) | 2004-07-14 | 2004-07-14 | Tensioning structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2713224Y (en) |
-
2004
- 2004-07-14 CN CN 200420037701 patent/CN2713224Y/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 | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |