CN104047985A - Damping device for tensioner - Google Patents
Damping device for tensioner Download PDFInfo
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- CN104047985A CN104047985A CN201410242795.7A CN201410242795A CN104047985A CN 104047985 A CN104047985 A CN 104047985A CN 201410242795 A CN201410242795 A CN 201410242795A CN 104047985 A CN104047985 A CN 104047985A
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Abstract
The invention relates to the technical field of vehicle engines and discloses a damping device for a tensioner. In order to solve the problem that asymmetric damping can not be provided in the prior art, the following technical scheme is provided, the damping device is characterized by comprising a push block, a damping block, a radial pressing part and a damping mechanism cavity body with a round wall; a high damping pushing surface in a pushing structure and a high damping contact surface of the damping block are abutted against each other; a low damping pushing surface in the pushing structure is abutted against a low damping contact surface of the damping block; the distance between the high damping contact surface and a rotary axial line is smaller than the distance between the low damping contact surface and the rotary axial line; the radial pressing part is abutted against the damping block and pushes the friction surface of the damping block to be abutted against the round wall of the damping mechanism cavity body. The damping device has the beneficial effects that the damping device can provide friction force with asymmetric damping, and an asymmetric coefficient value is higher.
Description
Technical field
The present invention relates to the damping mechanism that engine tensioner is used, more specifically relate to a kind of damping device for stretcher.
Background technique
In motor head accessory system, the belt vibration causing due to engine running is not hoped; The problem that belt vibration brings is that vibration causes travelling comfort to decline on the one hand, causes on the other hand accessory wheel system bulk life time to reduce.So stretcher need to reduce vibration by damping mechanism.
Belt away from Idle wheel direction on (being stretcher uninstall direction), in order to keep the compliance of stretcher and in order to keep belt to have enough tension force, the damping value that is desirably in this direction is as much as possible little.
If the motor in running slows down suddenly, the annex meeting tightening belt slack list that the rotary inertias such as motor are larger, orders about stretcher and moves to loading direction, belt is shortened, and drive belt to Crankshaft motion, and cause belt to skid on bent axle, produce the bad phenomenon such as abnormal sound.And if stretcher has enough damping forces on loading direction, can obviously suppress this situation and occur.
If the motor in running accelerates suddenly, due to the effect of the larger annex of the rotary inertias such as motor, bent axle can be strained pilled-in selvedge belt, makes it to shorten, and drives slack list belt to motor movement, makes slack list more loose, and length increases, and causes belt to skid on motor.And if stretcher damping force on uninstall direction is enough little, the growth of meeting summary responses slack list belt, and keep belt to have enough tension force, thereby obviously suppressed belt slippage situation, occur.
Comprehensive above situation, wish that stretcher has larger damping on loading direction, and damping is enough little on uninstall direction.
Existing automatic type stretcher, although mostly all with damping mechanism, for damping belt vibration, the damping mechanism of these stretchers, the overwhelming majority is symmetrical damping, at stretcher, loading is all the same with the damping value on uninstall direction.
Summary of the invention
The problem of asymmetric damping can not be provided in order to solve prior art damping mechanism, the present invention proposes following technological scheme.
1. for the damping device of stretcher, comprising: pushing block, damping block, the damping mechanism cavity of radially press member, and circular wall;
Described damping block comprises: high damping resistance surface, low resistance resistance surface, and the rubbing surface that is positioned at outside; The circular wall surface configuration of the rubbing surface of damping block and described damping mechanism cavity is coincide, and these two masks have common axis of rotation heart line and this two faces to form fricting working surface;
Around shaft center line, there is relative frictional rotation back and forth with the circular wall surface of damping mechanism cavity in the rubbing surface of damping block;
High damping resistance surface is less than low resistance resistance surface apart from the distance of shaft center line apart from the distance of shaft center line;
Described pushing block comprises pushing structure, and pushing structure comprises that high damping promotes face and low resistance promotes face;
The high damping resistance surface that high damping in pushing structure promotes face and damping block offsets; The low resistance resistance surface that low resistance in pushing structure promotes face and damping block offsets;
Described radially press member, itself and damping block offset, and its circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
2. the damping block described in, quantity is more than or equal to 1;
Damping block be two or more, the pushing structure of pushing block comprises promotion separation structure; Promote the quantity of separation structure and the quantity of damping block consistent; Each promotes to include high damping in separation structure and promotes face and low resistance promotion face; The rubbing surface that each damping block includes high damping resistance surface, low resistance resistance surface and is positioned at outside.
3. the damping block described in, it is shaped as fan shape, and described fan shape refers to the paper shape after paper folding fan launches; Damping block comprises the small arc surface of inner side and great circle cambered surface and two sides in outside; Two described sides, it is inconsistent that the regional area in an one side and the high damping of pushing block promote face, and this regional area is near apart from shaft center line diametrically; Two described sides, it is inconsistent that the regional area in its another side and the low resistance of pushing block promote face, and this regional area is far away apart from shaft center line diametrically.
4. the damping block described in, its outside is large circular arc, and its inner side is little circular arc, and its both sides are as follows;
Described both sides, one side is two line segments, that is: outside, oblique line is interior for straight line radially; Aforementioned two lines, straight line is the edge line of low resistance resistance surface, oblique line forms dodges region;
Described both sides, its opposite side is two line segments, that is: outside, straight line is radially interior for oblique line; Aforementioned two lines, straight line is the edge line of high damping resistance surface, oblique line forms dodges region.
5. the damping block described in is shaped as fan shape, and described fan shape refers to the paper shape after paper folding fan launches, i.e. described damping block, and its outside be great circle arc, and its inner side be roundlet arc, and its both sides are the straight line of gathering;
Low resistance promotion face and high damping promotion face are the structural plane of projection;
One side of damping block, it and low resistance promote face and offset in plane-plane contact mode, and offset place close to the orthodrome of outside and away from the small arc-shaped of inner side; The opposite side of damping block, it and high damping promote face and offset in plane-plane contact mode, and the place that offsets is far away and close to the small arc-shaped of inner side from outside orthodrome.
6. the radially press member described in is torsion spring; Described torsion spring is in inner side, and the rubbing surface of described damping block is in outside, and torsion spring and damping block elasticity offset and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
7. the radially press member described in is hole jump ring; Described hole is with jump ring in inner side, and the rubbing surface of described damping block is in outside, and hole offsets by jump ring and damping block elasticity and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
8. the damping block described in, its inner side has arc step;
Described radially press member is torsion spring or hole jump ring;
Radially press member is torsion spring, and the end of torsion spring is positioned at arc step place, and torsion spring and damping block elasticity offset and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets;
Radially press member is hole jump ring, and hole is positioned at arc step place with jump ring, and hole offsets by jump ring and damping block elasticity and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
9. the radially press member described in is wavy spring sheet, and wavy spring sheet is arranged between damping block and pushing block; Wavy spring sheet internally offsets with pushing block, and the external and damping block of wavy spring sheet offsets and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
10. the stretcher described in comprises base, rocking arm and central shaft; The end of described rocking arm is provided with end cap;
Described damping mechanism cavity is arranged on rocking arm end; Described central shaft, its one end is fixedly connected with base, and its body portion and rocking arm end are rotationally connected, and its other end is all fixedly connected with end cap with pushing block;
Described pushing block and described end cap merge manufacture and are integrated, or described pushing block and described end cap split manufacture.
Stretcher described in 11. comprises base, rocking arm and central shaft;
Described damping mechanism cavity is arranged in rocking arm, described pushing block and described base, and both merge to manufacture and are integrated these, or these both splits are manufactured; Described central shaft, its one end and rocking arm are rotationally connected, and its other end is fixedly connected with base with pushing block.
Stretcher described in 12. comprises base, rocking arm and central shaft;
Described damping mechanism cavity is arranged in base; Described pushing block and described rocking arm, both merge to manufacture and are integrated these, or these both splits are manufactured; Described central shaft, its one end is fixedly connected with pushing block with rocking arm, and its other end and base are rotationally connected.
Stretcher described in 13. comprises base, rocking arm and central shaft.
Damping device described in 14. comprises central shaft; Central shaft, it is fixedly connected with pushing block, and itself and damping mechanism cavity are rotationally connected.
Damping device described in 15. comprises central shaft; Central shaft, itself and pushing block are rotationally connected, and it is fixedly connected with damping mechanism cavity.
Stretcher described in 16. comprises base, rocking arm and central shaft; Described damping mechanism cavity is arranged on rocking arm end; Described pushing block is located at the bottom of damping mechanism cavity; Described central shaft, its situation about connecting respectively from top to bottom has: be fixedly connected with base, be rotationally connected with rocking arm end, be fixedly connected with pushing block.
The invention has the beneficial effects as follows:
Invention damping device can provide the frictional force of asymmetric damping, and coefficient of asymmetry value is higher; In addition, use the technology of the present invention to promote the stretcher of prior art, difficulty is low, and original manufacturing mechanism does not need to carry out more transformation.
Accompanying drawing explanation
Fig. 1 is one of schematic diagram of apparatus of the present invention, and in this figure, damping block quantity is 1, and radially press member is hole jump ring, and the reticle in figure is shaft center line;
Fig. 2 is that Fig. 1 has removed the schematic diagram of hole with jump ring;
Fig. 3 is the schematic diagram that Fig. 1 has done to analyse and observe processing;
Fig. 4 be apparatus of the present invention schematic diagram two, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is hole jump ring;
Fig. 5 is that Fig. 4 has removed the schematic diagram of hole with jump ring;
Fig. 6 is the schematic diagram that Fig. 4 has done to analyse and observe processing;
Fig. 7 is the schematic perspective view of pushing block in Fig. 4;
Fig. 8 is the schematic perspective view of damping block in Fig. 4;
Fig. 9 is one of mechanics analysis figure;
Figure 10 is two of mechanics analysis figure;
Figure 11 be apparatus of the present invention schematic diagram three, in this figure, damping block quantity is 3, the quantity that promotes separation structure is also 3;
Figure 12 be contrive equipment schematic diagram four, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, low resistance promotes the structural plane that face and high damping resistance surface are projection;
Figure 13 is the damping block schematic perspective view in Figure 12;
Figure 14 is the pushing block schematic perspective view in Figure 12;
Figure 15 be apparatus of the present invention schematic diagram five, in this figure, damping block quantity is 2, radially press member is torsion spring;
Figure 16 is the schematic diagram that Figure 15 has removed torsion spring;
Figure 17 is the schematic diagram that Fig. 1 has done to analyse and observe processing;
Figure 18 is the part component schematic perspective view in Figure 15, has only drawn torsion spring and 1 damping block in figure;
Figure 19 a certain stretcher of invention damping device that has been use in embodiment one, this figure has made resolution process to each component or has said and made explosive treatment;
Figure 20 is the pushing block end cap integral piece in Figure 19, and this integral piece has expressed pushing block and end cap merging manufacture is integrated;
Figure 21 is the damping block schematic perspective view in Figure 19, and in this figure, the inner side of damping block has arc step;
Figure 22 is the schematic diagram after the stretcher assembling moulding in Figure 19;
Figure 23 is the stretcher in embodiment three, and the stretcher in figure has removed end cap;
Figure 24 is that Figure 23 has removed the schematic diagram of hole with jump ring;
Figure 25 is the schematic diagram that Figure 24 has done to analyse and observe processing;
Figure 26 is the schematic diagram that Figure 23 has removed jump ring for hole, removed damping block and removed central shaft;
Figure 27 is the damping block stereo amplification figure in Figure 24;
Figure 28 is the stereo amplification figure of pushing block and rocking arm in Figure 24;
Figure 29 be apparatus of the present invention schematic diagram six, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is two wavy spring sheets;
Figure 30 is the stretcher schematic diagram in embodiment four;
Figure 31 is that B-B in Figure 30 is to sectional view;
Figure 32 is that C-C in Figure 31 is to sectional view;
Figure 33 is the stretcher schematic diagram in embodiment five;
Figure 34 is that D-D in Figure 33 is to sectional view;
Figure 35 be E-E in Figure 34 to sectional view, the belt wheels of this figure bottom etc. omit and do not draw
Figure 36 is that Fig. 1 has removed the schematic diagram of hole with jump ring, and the damping block quantity in figure is 1, and reticle is shaft center line;
Figure 37 is damping block and the pushing block schematic diagram in Figure 36;
Figure 38 is the damping block schematic diagram in Figure 36;
Figure 39 is the rear view of Figure 38;
Figure 40 is the left view of Figure 38;
Figure 41 is the pushing block schematic diagram in Figure 36;
Figure 42 is the rear view of Figure 41;
Figure 43 is the left view of Figure 41;
Figure 44 is the right elevation of Figure 41;
Figure 45 is the schematic perspective view of pushing block in Figure 36;
Figure 46 is the schematic perspective view of damping block in Figure 36;
Figure 47 is three of mechanics analysis figure;
Figure 48 is four of mechanics analysis figure;
Figure 49 is the schematic diagram seven of invention, and the damping block quantity in this figure, for being 3, has 3 to promote separation structure in pushing block;
Figure 50 be invention schematic diagram eight, the damping block quantity in this figure is for being 4, has 4 promotion separation structures in pushing block;
Number in the figure explanation
1. damping mechanism cavity; 1-32. damping mechanism cavity; 1-33. damping mechanism cavity; 2. hole jump ring; 2-1. hole jump ring; 2-1a. hole jump ring; 3. damping block; 3-1. damping block; 3-2. damping block; 3-3. damping block; 3-4. damping block; 3-5. damping block; 3-5a. damping block; 3-7. damping block; 4. pushing block; 4-1. pushing block; 4-2. pushing block; 4-3. pushing block; 4-4. pushing block; 4-7. pushing block; 5. torsion spring; 6. high damping promotes face; 6a. high damping promotes face; 6-1. high damping promotes face; 6-1a. high damping promotes face; 6-2. high damping promotes face; 6-2a. high damping promotes face; 7. low resistance promotes face; 7a. low resistance promotes face; 7-1. low resistance promotes face; 7-1a. low resistance promotes face; 7-2. low resistance promotes face; 7-2a. low resistance promotes face; 8. high damping resistance surface; 8a. high damping resistance surface; 8-1. high damping resistance surface; 8-1a. high damping resistance surface; 8-2. high damping resistance surface; 8-3. high damping resistance surface; 9. low resistance resistance surface; 9a. low resistance resistance surface; 9-1. low resistance resistance surface; 9-1a. low resistance resistance surface; 9-2. low resistance resistance surface; 9-3. low resistance resistance surface; 20-1. dodge region; 20-1a. dodge region; 33. bases; 34. tension springs; 35. liners; 36. rocking arms; 37. damping blocks; 38. pushing block end cap integral pieces; 39. linings; 40. central shafts; 40-1. central shaft; 41. bearings; 41-1. bearing; 42. belt wheels; 43. dust covers; 44. screws; 45. rubbing surfaces; 45-1. rubbing surface; 46. circular walls; 50. wavy spring sheets; 50a. wavy spring sheet; 51. arch steps; 103-2. damping block; 103-2a. damping block; 103-3. damping block; 103-3a. damping block; 104-2. pushing block; 133-1. base; 134-2. tension spring; 134-3. tension spring; 136-2. rocking arm; 140-2. central shaft; 140-3. central shaft; 142-2. belt wheel; 142-2. belt wheel; 150. pushing block base integral pieces; 160. pushing block rocking arm integral pieces;
D. the outer diameter of torsion spring; D1. lower; D2. lower; D3. lower; D4. lower; G1. eminence; G2. eminence; G3. eminence; G4. eminence; P. active force; P '. active force; P
f. radial component, claims again normal component of force; P '
f. radial component, claims again normal component of force; P
q. tangential component; P '
q. tangential component; XZZXX. shaft center line.
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Embodiment
First, technological scheme of the present invention is made the general description, and interpretation.
Overall technological scheme is described below.
The present invention, for the damping device of stretcher, comprising: pushing block, damping block, the damping mechanism cavity of radially press member, and circular wall;
Described damping block comprises: high damping resistance surface, low resistance resistance surface, and the rubbing surface that is positioned at outside; The circular wall surface configuration of the rubbing surface of damping block and described damping mechanism cavity is coincide, and these two masks have common axis of rotation heart line and this two faces to form fricting working surface;
Around shaft center line, there is relative frictional rotation back and forth with the circular wall surface of damping mechanism cavity in the rubbing surface of damping block;
High damping resistance surface is less than low resistance resistance surface apart from the distance of shaft center line apart from the distance of shaft center line;
Described pushing block comprises pushing structure, and pushing structure comprises that high damping promotes face and low resistance promotes face;
The high damping resistance surface that high damping in pushing structure promotes face and damping block offsets; The low resistance resistance surface that low resistance in pushing structure promotes face and damping block offsets;
Described radially press member, itself and damping block offset, and its circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Overall technological scheme is described as above, below the involved some problems of overall technological scheme is described and is explained.In addition, above overall technological scheme and the following description and explanation, all can understand referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9, Figure 10 and Figure 11.
Fig. 1 is one of schematic diagram of apparatus of the present invention, and in this figure, damping block quantity is 1, and radially press member is hole jump ring, and the reticle in figure is shaft center line; Fig. 2 is that Fig. 1 has removed the schematic diagram of hole with jump ring; Fig. 3 is the schematic diagram that Fig. 1 has done to analyse and observe processing; Fig. 4 be apparatus of the present invention schematic diagram two, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is hole jump ring; Fig. 5 is that Fig. 4 has removed the schematic diagram of hole with jump ring; Fig. 6 is the schematic diagram that Fig. 4 has done to analyse and observe processing; Fig. 7 is the schematic perspective view of pushing block in Fig. 4; Fig. 8 is the schematic perspective view of damping block in Fig. 4; Fig. 9 is one of mechanics analysis figure; Figure 10 is two of mechanics analysis figure; Figure 11 be apparatus of the present invention schematic diagram three, in this figure, damping block quantity is 3, the quantity that promotes separation structure is also 3.Label declaration in figure: 1. damping mechanism cavity; 2. hole jump ring; 3. damping block; 3-1. damping block; 3-2. damping block; 4. pushing block; 4-1. pushing block; 4-2. pushing block; 6. high damping promotes face; 6a. high damping promotes face; 7. low resistance promotes face; 7a. low resistance promotes face; 8. high damping resistance surface; 8a. high damping resistance surface; 9. low resistance resistance surface; 9a. low resistance resistance surface; P. active force; P '. active force; P
f. radial component, claims again normal component of force; P '
f. radial component, claims again normal component of force; P
q. tangential component; P '
q. tangential component.
One, the circular wall surface configuration of the rubbing surface of damping block and described damping mechanism cavity is coincide, and these two masks have common axis of rotation heart line and this two faces to form fricting working surface.
1. damping mechanism cavity, its inside cavity is columniform hollow space, its cavity wall is rounded.
2. the rubbing surface that the outer surface of damping block is circular arc, the circular wall surface configuration of this rubbing surface and damping mechanism cavity is coincide, i.e. these both laminatings, or both have identical curvature to say this.
3. the round chamber body wall of damping mechanism cavity, it has central axis; The rubbing surface of damping block is circular arc, inevitable corresponding the center of circle of this circular arc, rotation axis when damping block rubbing surface rotates, through the center of circle.When damping block, with damping mechanism cavity, relative rotation occurs, both have common axis of rotation heart line.
4. damping block is subject to radially press member pressure from inside to outside, and when damping block and damping mechanism cavity relatively rotate, both surfaces exist friction and frictional damping.
What two, damping block and damping mechanism cavity occurred is to relatively rotate, a. can be damping block relatively rotate and damping mechanism cavity relative to not rotating, b. can be also that relative to not rotating, damping mechanism cavity relatively rotates damping block.The situation of the former a is by pushing block, to promote damping block to rotate; The situation of the latter b, is to head on damping block by pushing block, does not allow damping block to rotate.
Three, radially press member and damping block offset, and its effect is that the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets; Namely, to damping block, apply a normal force all the time, make it to form initial frictional at fricting working surface; Further labor is: when damping block and damping mechanism cavity relatively rotate or while having rotation trend, both surfaces exist frictional force and frictional damping.Radially press member applies normal force to damping block, and the feature of this power is: when damping block and damping mechanism cavity relatively rotate, this power exists; When damping block and damping mechanism cavity do not relatively rotate, even when rotating tendency, this power also exists.
Radially press member and force mechanism thereof, can be diversified, also has after file many places to be illustrated and to explain.
Four, high damping resistance surface is less than low resistance resistance surface apart from the distance of shaft center line apart from the distance of shaft center line.
When damping block and damping mechanism cavity relatively rotate, damping block forms active force under the effect of pushing block.
In conjunction with Fig. 9 and Figure 10, describe; Label declaration in figure: P. active force; P '. active force; P
f. radial component, claims again normal component of force; P '
f. radial component, claims again normal component of force; P
q. tangential component; P '
q. tangential component.
Suppose: 1. damping block is motionless and damping mechanism cavity relatively rotates, while 2. loading, damping mechanism cavity generation clockwise direction rotates, and 3. during unloading, damping mechanism cavity occurs counterclockwise to rotate.
Being analyzed as follows of power.
1. for the contrive equipment of Fig. 4, suppose that damping block is motionless, and when loading, damping mechanism cavity occurs to relatively rotate clockwise, its stressing conditions is referring to Fig. 9.
Double-lined arrow in Fig. 9 represents damping mechanism cavity 1 sense of rotation, and the reticle that " 0 " is located represents rotating center, i.e. the centre point of shaft center line process.
During loading, pushing block promotes face by the high damping in pushing structure and active force is imposed on to the high damping resistance surface of damping block; Because high damping resistance surface is little apart from the distance of shaft center line, thereby the component obtaining in the Normal direction of fricting working surface is large, so frictional damping is large.
2. for the contrive equipment of Fig. 4, suppose that damping block is motionless, and occur to relatively rotate counterclockwise at when unloading, damping mechanism cavity, its stressing conditions is referring to Figure 10.
Single line arrow in Figure 10 represents damping mechanism cavity sense of rotation, and the reticle that " 0 " is located represents rotating center, i.e. the centre point of shaft center line process.
During unloading, pushing block promotes face by the low resistance in pushing structure and active force is imposed on to the low resistance resistance surface of damping block; Because low resistance resistance surface is large apart from the distance of shaft center line, thereby the component obtaining in the Normal direction of fricting working surface is little, so frictional damping is little.
3. while loading, frictional damping is large, during unloading frictional damping little, thereby reached damping force and there is asymmetrical object.
Asymmetric damping characteristics can be weighed with coefficient of asymmetry, and coefficient of asymmetry is defined as loading damping force and the ratio that unloads damping force, and for the symmetrical damping characteristic of prior art, coefficient of asymmetry is 1; The present invention can pass through to adjust the distance of high and low damping resistance surface and shaft center line, and adjusts the friction factor between damping block rubbing surface and damping mechanism cavity circular wall surface, adjusts coefficient of asymmetry, and its value can reach more than 5.
The situation of more asymmetric damping characteristic, inventor has also done lot of experiments and prototype test, has all obtained obvious, good technique effect.
4. in above description, the situation of its hypothesis is: damping block is motionless and damping mechanism cavity relatively rotates.If situation about supposing changes into that damping block relatively rotates, damping mechanism cavity does not rotate, and the situation of the asymmetric damping characteristics occurring is identical.
Above, to overall technological scheme be described, description and interpretation; Below, to each further technological scheme describe, description and interpretation.
Further technological scheme 1.
Technological scheme is described below.
Described damping block, quantity is more than or equal to 1; Damping block be two or more, the pushing structure of pushing block comprises promotion separation structure; Promote the quantity of separation structure and the quantity of damping block consistent; Each promotes to include high damping in separation structure and promotes face and low resistance promotion face; The rubbing surface that each damping block includes high damping resistance surface, low resistance resistance surface and is positioned at outside.
Relevant description and interpretation are as follows.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, and Figure 11, describe.Label declaration in figure: 1. damping mechanism cavity; 2. hole jump ring; 3. damping block; 3-1. damping block; 3-2. damping block; 4. pushing block; 4-1. pushing block; 4-2. pushing block; 6. high damping promotes face; 6a. high damping promotes face; 7. low resistance promotes face; 7a. low resistance promotes face; 8. high damping resistance surface; 8a. high damping resistance surface; 9. low resistance resistance surface; 9a. low resistance resistance surface.
The technology of contrive equipment, the damping block of its use, quantity can be 1, can be also 2,3, or more, specifically adopts severally, need be determined on a case-by-case basis.
In Fig. 1, Fig. 2 and Fig. 3, the quantity of damping block is for being 1.Fig. 1 is one of schematic diagram of apparatus of the present invention, and in this figure, damping block quantity is 1, and radially press member is hole jump ring; Fig. 2 is that Fig. 1 has removed the schematic diagram of hole with jump ring; Fig. 3 is the schematic diagram that Fig. 1 has done to analyse and observe processing.
In Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the quantity of damping block, for being 2, has 2 to promote separation structure in pushing block.Fig. 4 be apparatus of the present invention schematic diagram two, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is hole jump ring; Fig. 5 is that Fig. 4 has removed the schematic diagram of hole with jump ring; Fig. 6 is the schematic diagram that Fig. 4 has done to analyse and observe processing; Fig. 7 is the schematic perspective view of pushing block in Fig. 4; Fig. 8 is the schematic perspective view of damping block in Fig. 4.
In Figure 11, the quantity of damping block, for being 3, has 3 to promote separation structure in pushing block.Figure 11 be apparatus of the present invention schematic diagram three, in this figure, damping block quantity is 3, the quantity that promotes separation structure is also 3.
From introduction above, can know, in pushing structure (or promoting in separation structure), include high damping and promote face and low resistance promotion face; The rubbing surface that each damping block includes high damping resistance surface, low resistance resistance surface and is positioned at outside.
Further technological scheme 2.
Technological scheme is described below.
Described damping block, it is shaped as fan shape, and described fan shape refers to the paper shape after paper folding fan launches; Damping block comprises the small arc surface of inner side and great circle cambered surface and two sides in outside; Two described sides, it is inconsistent that the regional area in an one side and the high damping of pushing block promote face, and this regional area is near apart from shaft center line diametrically; Two described sides, it is inconsistent that the regional area in its another side and the low resistance of pushing block promote face, and this regional area is far away apart from shaft center line diametrically.
Relevant description and interpretation are as follows.
Referring to Figure 12, understand; Label declaration in figure: 1. damping mechanism cavity; 3-3. damping block; 4-3. pushing block.In Figure 12, the quantity of damping block, for being 2, has 2 to promote separation structure in pushing block.The top damping block of Figure 12 of take is example, and damping block is shaped as fan shape; Damping block comprises: the small arc surface of inner side (downside in figure), the great circle cambered surface in outside (upside in figure), and two sides; Two described sides, it is inconsistent that the regional area in an one side (right side in figure) and the high damping of pushing block promote face, and this regional area is near apart from shaft center line diametrically; Two described sides, it is inconsistent that the regional area in its another side (left side in figure) and the low resistance of pushing block promote face, and this regional area is far away apart from shaft center line diametrically.
Further technological scheme 3.
Technological scheme is described below.
Described damping block, its outside is large circular arc, and its inner side is little circular arc, and its both sides are as follows; Described both sides, one side is two line segments, that is: outside, oblique line is interior for straight line radially; Aforementioned two lines, straight line is the edge line of low resistance resistance surface, oblique line forms dodges region; Described both sides, its opposite side is two line segments, that is: outside, straight line is radially interior for oblique line; Aforementioned two lines, straight line is the edge line of high damping resistance surface, oblique line forms dodges region.
Relevant description and interpretation are as follows.
In conjunction with Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, describe.
Fig. 4 be apparatus of the present invention schematic diagram two, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is hole jump ring; Fig. 5 is that Fig. 4 has removed the schematic diagram of hole with jump ring; Fig. 6 is the schematic diagram that Fig. 4 has done to analyse and observe processing; Fig. 7 is the schematic perspective view of pushing block in Fig. 4; Fig. 8 is the schematic perspective view of damping block in Fig. 4.Label declaration in figure: 1. damping mechanism cavity; 2. hole jump ring; 3-1. damping block; 4-1. pushing block; 6. high damping promotes face; 6a. high damping promotes face; 7. low resistance promotes face; 7a. low resistance promotes face; 8. high damping resistance surface; 8a. high damping resistance surface; 9. low resistance resistance surface; 9a. low resistance resistance surface.
The damping block of Fig. 6 middle and upper part of now take is example, this damping block, and its outside (upside in figure) be large circular arc, and (downside in figure) is little circular arc inside it, and its both sides are as follows; Described both sides, one side (left side in figure) is two line segments, that is: outside, oblique line is interior for straight line radially; Aforementioned two lines, straight line is the edge line of low resistance resistance surface, oblique line forms dodges region; Described both sides, its opposite side (right side in figure) is two line segments, that is: outside, straight line is radially interior for oblique line; Aforementioned two lines, straight line is the edge line of high damping resistance surface, oblique line forms dodges region.
Dodge region, its meaning is exactly discontiguous region.
Further technological scheme 4.
Technological scheme is described below.
Described damping block is shaped as fan shape, and described fan shape refers to the paper shape after paper folding fan launches, i.e. described damping block, and its outside be great circle arc, and its inner side be roundlet arc, and its both sides are the straight line of gathering; Low resistance promotion face and high damping promotion face are the structural plane of projection; One side of damping block, it and low resistance promote face and offset in plane-plane contact mode, and offset place close to the orthodrome of outside and away from the small arc-shaped of inner side; The opposite side of damping block, it and high damping promote face and offset in plane-plane contact mode, and the place that offsets is far away and close to the small arc-shaped of inner side from outside orthodrome.
Relevant description and interpretation are as follows.
Referring to Figure 12, Figure 13 and Figure 14, understand.Figure 12 be contrive equipment schematic diagram four, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, low resistance promotes the structural plane that face and high damping resistance surface are projection; Figure 13 is the damping block schematic perspective view in Figure 12; Figure 14 is the pushing block schematic perspective view in Figure 12.Label declaration in figure: 1. damping mechanism cavity; 3-3. damping block; 4-3. pushing block; 6-1. high damping promotes face; 6-1a. high damping promotes face; 7-1. low resistance promotes face; 7-1a. low resistance promotes face; 8-1. high damping resistance surface; 8-1a. high damping resistance surface; 9-1. low resistance resistance surface; 9-1a. low resistance resistance surface.
See Figure 12, damping block and high damping resistance surface thereof and low resistance resistance surface, promote separation structure and low resistance thereof and promote face and high damping resistance surface, although aforementioned projects can be set to non-rotating symmetry, but it is rotational symmetric that inventor recommends to be set to, and Figure 12, Figure 13 and Figure 14 are all set to rotational symmetric.Rotational symmetric benefit is: manufacture and design conveniently, component kind is few, is easy to management.
See Figure 13, the damping block of scheming middle and upper part of take is example, and its bi-side are rectangular plane, and the plane of its left part is low resistance resistance surface, and the plane of right part is high damping resistance surface.
See Figure 14, in superposed promotion separation structure, left side has a low resistance to promote face, and right side has a high damping to promote face, and they are the structural plane of projection.
One side of damping block and low resistance promote face and offset in plane-plane contact mode; The opposite side of damping block and high damping promote face and offset in plane-plane contact mode; Aforementioned " plane-plane contact " is that implication comprises: be 1. face contacts, rather than some contact, neither contact by line; 2. the face that contacted, can be a part of region of this face, might not be the whole of this face.
Further technological scheme 5.
Technological scheme is described below.
Described radially press member is hole jump ring; Described hole is with jump ring in inner side, and the rubbing surface of described damping block is in outside, and hole offsets by jump ring and damping block elasticity and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Relevant description and interpretation are as follows.
In conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, describe.Label declaration in figure: 1. damping mechanism cavity; 2. hole jump ring; 3. damping block; 3-1. damping block; 4. pushing block; 4-1. pushing block; 6. high damping promotes face; 6a. high damping promotes face; 7. low resistance promotes face; 7a. low resistance promotes face; 8. high damping resistance surface; 8a. high damping resistance surface; 9. low resistance resistance surface; 9a. low resistance resistance surface; .
Referring to Fig. 1, Fig. 2 and Fig. 3.Fig. 1 is one of schematic diagram of apparatus of the present invention, and in this figure, damping block quantity is 1, and radially press member is hole jump ring, and the reticle in figure is shaft center line; Fig. 2 is that Fig. 1 has removed the schematic diagram of hole with jump ring; Fig. 3 is the schematic diagram that Fig. 1 has done to analyse and observe processing.
Again referring to Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8.
Fig. 4 be apparatus of the present invention schematic diagram two, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is hole jump ring; Fig. 5 is that Fig. 4 has removed the schematic diagram of hole with jump ring; Fig. 6 is the schematic diagram that Fig. 4 has done to analyse and observe processing; Fig. 7 is the schematic perspective view of pushing block in Fig. 4; Fig. 8 is the schematic perspective view of damping block in Fig. 4.
Hole is with there being two small sircle holes on jump ring, during assembling, use instrument etc. is close to each other by two small sircle holes, now hole diminishes with jump ring diameter, then be contained in arc step, remove again external force, hole is offseted to large recovery and with damping block elasticity by little with the diameter of jump ring, and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Further technological scheme 6.
Technological scheme is described below.
Described radially press member is torsion spring; Described torsion spring is in inner side, and the rubbing surface of described damping block is in outside, and torsion spring and damping block elasticity offset and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Relevant description and interpretation are as follows.
Referring to Figure 15, Figure 16, Figure 17 and Figure 18, understand.
Figure 15 be apparatus of the present invention schematic diagram five, in this figure, damping block quantity is 2, radially press member is torsion spring; Figure 16 is the schematic diagram that Figure 15 has removed torsion spring; Figure 17 is the schematic diagram that Fig. 1 has done to analyse and observe processing; Figure 18 is the part component schematic perspective view in Figure 15, has only drawn torsion spring and 1 damping block in figure.Number in the figure explanation: 1. damping mechanism cavity; 3-4. damping block; 4-4. pushing block; 5. torsion spring; D. the outer diameter of torsion spring.
The torsion spring of assembling completion, it is radially expanded outwardly and is offseted with damping block elasticity by interior, and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Torsion spring is divided into two kinds of situations, is now introduced respectively.
The first situation is that the outer diameter of torsion spring is thick situation.Aforementioned outer diameter, its meaning is the D in Figure 18.When torsion spring outer diameter is when being thick, outer diameter is too large, cannot put into the inner side of damping block, outer diameter need to be attenuated.One of method is: apply a warping force, make torsion spring continue spiral by original Hand of spiral, so, the outer diameter of torsion spring attenuates, and then the torsion spring after attenuating is packed into the inner side of damping block, finally removes warping force; Remove after warping force, the outer diameter of torsion spring automatically carries out restorative chap and expands, and offsets with damping block elasticity, and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
The second situation is that the outer diameter of torsion spring is thin situation.In such cases, because outer diameter is thin, although can put into easily the inner side of damping block, though torsion spring can not or have compressing strength too little to damping block generation compressing, so need to make the outer diameter chap of torsion spring.Method can be: the inner side of torsion spring being put into damping block, one end of torsion spring is fixed, then by the other end of torsion spring, apply turn-back power against the Hand of spiral of torsion spring, after turn-back, the outer diameter chap of torsion spring, finally that the other end of torsion spring is also fixing.Torsion spring after two ends are fixing, the diameter of its outer diameter than before being mounted with time be for thick, its pushing damping block from inside to outside, the circular wall of promotion damping block rubbing surface and damping mechanism cavity offsets.
When reading and understand this further technological scheme and Figure 15, Figure 16, Figure 17, Figure 18, can be referring to Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8.
Further technological scheme 7.
Technological scheme is described below.
Described radially press member is wavy spring sheet, and wavy spring sheet is arranged between damping block and pushing block; Wavy spring sheet internally offsets with pushing block, and the external and damping block of wavy spring sheet offsets and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Relevant description and interpretation are as follows.
Referring to Figure 29.
Figure 29 be apparatus of the present invention schematic diagram six, in this figure, damping block quantity is 2, the quantity that promotes separation structure is also 2, radially press member is two wavy spring sheets.Label declaration in figure: 1. damping mechanism cavity; 3-7. damping block; 4-7. pushing block; 50. wavy spring sheets; 50a. wavy spring sheet.
Wavy spring sheet after compression, by vertical being inserted between damping block and pushing block, as shown in figure 29; Wavy spring sheet in oppressed state after assembling completion, pushes piece in it, extrapolation damping block, and its effect is: exerting pressure to damping block from inside to outside, thus the circular wall of damping block rubbing surface and damping mechanism cavity is offseted.
Embodiment one
The present embodiment is introduced a certain stretcher situation of using invention damping device.
Referring to Figure 19, Figure 20, Figure 21 and Figure 22.Figure 19 is a certain stretcher that has used invention damping device, and this figure has made resolution process to each component or said and made explosive treatment; Figure 20 is the pushing block end cap integral piece in Figure 19, and this integral piece has expressed pushing block and end cap merging manufacture is integrated; Figure 21 is the damping block schematic perspective view in Figure 19, and in this figure, the inner side of damping block has arc step; Figure 22 is the schematic diagram after the stretcher assembling moulding in Figure 19.Number in the figure explanation: 2-1. hole jump ring; 3-5. damping block; 3-5a. damping block; 6-2. high damping promotes face; 6-2a. high damping promotes face; 7-2. low resistance promotes face; 7-2a. low resistance promotes face; 8-2. high damping resistance surface; 9-2. low resistance resistance surface; 33. bases; 34. tension springs; 35. liners; 36. rocking arms; 38. pushing block end cap integral pieces; 39. linings; 40. central shafts; 41. bearings; 41-1. bearing; 42. belt wheels; 43. dust covers; 44. screws; 46. circular walls; 51. arch steps.
See Figure 19, stretcher comprises: base 33, rocking arm 36, pushing block end cap integral piece 38, two damping blocks 37, and other component.
Rocking arm 36 has the damping mechanism cavity of a circular wall; Damping block has: high damping resistance surface, low resistance resistance surface, and the rubbing surface that is positioned at outside; The circular wall surface configuration of the rubbing surface of damping block and described damping mechanism cavity is coincide, and these two masks have common axis of rotation heart line and this two faces to form fricting working surface.When the rubbing surface in damping block outside and the circular wall generation relative movement of damping mechanism cavity, while claiming to relatively rotate (or) forms frictional damping.
Damping block comprises: high damping resistance surface 47, low resistance resistance surface 49, the rubbing surface 45 outside being positioned at, and arch steps 51.
Pushing block end cap integral piece 38, has high damping and promotes face 48 and low resistance promotion face 50.
The high damping resistance surface 47 that high damping promotes face 48 and damping block offsets; The low resistance resistance surface 49 that low resistance promotes face 50 and damping block offsets.
Radially press member is compressed hole jump ring 2-1, and it is positioned in the arch steps of damping block and the offseting with damping block of swelling properties, thereby the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
One end of central shaft 40 and base 33 interference fit joint (being fixedly connected with); Belt wheel 42, dust cover 43, bearing 41, screw 44 and rocking arm 36 fit together, and they make the partial rotational of coming or returning centered by central shaft 40, between rocking arm 36 and central shaft 40, with lining 39, separate.Rocking arm 36 separates with base 33 use liners 35.
Tension spring 34 two ends are fixed and are connected with base 33 with rocking arm 36 respectively.The function of tension spring 34 comprises: when rocking arm 36 rotates along loading direction, tension spring 34 is loaded, and when rocking arm 36 rotates along uninstall direction, tension spring 34 provides moment of torsion.
Referring to Figure 21, damping 37 is made by elastic material, and material can adopt wear resistant nylon.The rubbing surface 45 in damping block outside is arc surface, and the circular wall surface configuration of the rubbing surface of damping block and damping mechanism cavity is coincide, and these two masks have common axis of rotation heart line and this two faces to form fricting working surface.
Body portion and the rocking arm end of central shaft are rotationally connected, and the other end of central shaft is fixedly connected with pushing block end cap integral piece 38.
Circular wall damping mechanism cavity at rocking arm 36 (is clockwise direction in figure when base 33 (namely around central shaft 40) rotates along loading direction, double-lined arrow sense of rotation), the high damping of pushing block end cap integral piece 38 promotion face 48 is exerted pressure to high damping resistance surface 47; Due to the near distance of this position of exerting pressure apart from shaft center line, so the normal component of force forming at fricting working surface is large, so the frictional damping producing is large.
Circular wall damping mechanism cavity at rocking arm 36 (is counterclockwise in figure when base 33 (namely around central shaft 40) rotates along uninstall direction, single line arrow sense of rotation), the low resistance of pushing block end cap integral piece 38 promotion face 50 is exerted pressure to low resistance resistance surface 49; Due to the distance of this position of exerting pressure apart from shaft center line, so the normal component of force forming at fricting working surface is little, so the frictional damping producing is little.
In sum, the stretcher of the present embodiment has asymmetrical damping; Damping when stretcher rotates along loading direction is large, and the damping of stretcher during along off-load direction rotation is little.
Embodiment two
In embodiment one, pushing block and end cap merge manufacture and are integrated; In the present embodiment two, this is changed, pushing block and end cap are split manufacture.After pushing block and end cap are manufactured separately respectively, pushing block is fixedly connected with end cap again.
In addition, one end of central shaft is fixedly connected with base, and body portion and the rocking arm end of central shaft are rotationally connected, and the other end of central shaft is all fixedly connected with pushing block and end cap.
Embodiment three
Referring to Figure 23, Figure 24, Figure 25, Figure 26, Figure 27 and Figure 28.Figure 23 is the stretcher in the present embodiment, and the stretcher in figure has removed end cap; Figure 24 is that Figure 23 has removed the schematic diagram of hole with jump ring; Figure 25 is the schematic diagram that Figure 24 has done to analyse and observe processing; Figure 26 is that Figure 23 has removed jump ring and the schematic diagram of having removed damping block for hole; Figure 27 is the damping block stereo amplification figure in Figure 24; Figure 28 is the stereo amplification figure of pushing block and rocking arm in Figure 24.
Stretcher in the present embodiment comprises: base, rocking arm, central shaft and other component.
Damping mechanism cavity is arranged on rocking arm end; Pushing block is located at the bottom of damping mechanism cavity; The situation that central shaft connects respectively from top to bottom has: be fixedly connected with base, be rotationally connected with rocking arm end, be fixedly connected with pushing block.
When base and rocking arm relatively rotate, central shaft and base do not relatively rotate, and central shaft and rocking arm relatively rotate, and central shaft and pushing block do not relatively rotate.
When base and rocking arm relatively rotate, pushing block and rocking arm also relatively rotate; Under the effect of pushing block, around shaft center line, there is relative frictional rotation with the circular wall surface of damping mechanism cavity in the rubbing surface of damping block.
The high damping resistance surface that high damping in pushing block promotes face and damping block offsets, and they are little apart from the distance of shaft center line, thereby damping is large.The low resistance resistance surface that low resistance in pushing block promotes face and damping block offsets, and they are large apart from the distance of shaft center line, thereby damping is little.
Embodiment four
Stretcher in the present embodiment, referring to Figure 30, Figure 31 and Figure 32.
Figure 30 is the stretcher schematic diagram in embodiment four; Figure 31 is that B-B in Figure 30 is to sectional view; Figure 32 is that C-C in Figure 31 is to sectional view.Number in the figure explanation: 1-32. damping mechanism cavity; 103-2. damping block; 103-2a. damping block; 104-2. pushing block; 134-2. tension spring; 136-2. rocking arm; 140-2. central shaft; 142-2. belt wheel; 150. pushing block base integral pieces; D1. lower; D2. lower; G1. eminence; G2. eminence.XZZXX. shaft center line.
Stretcher comprises base, rocking arm 136-2 and central shaft 140-2.Damping mechanism cavity 1-32 is arranged in rocking arm 136-2.Pushing block and base merging are fabricated to pushing block base integral piece, and label is 150; In other words, the base in the present embodiment is unusual, has set up pushing block structure in base, and pushing block and base are fabricated to one.One end and the rocking arm of central shaft are rotationally connected, and the other end of central shaft is fixedly connected with pushing block base integral piece.
Further technical Analysis.
Use radially press member, allow radially press member and damping block offset, thereby the wall body that promotes damping block rubbing surface and damping mechanism cavity offsets.Note: Figure 30, Figure 31 and Figure 32 omit and do not draw radially press member.
See Figure 32.Little reticle in figure represents the point that shaft center line is passed; D1 in Figure 32 is lower, and D2 is lower, and G1 is eminence, and G2 is eminence; Aforementioned 4 places are promotions place that contact of damping block and pushing block.
Two lowers (D1, D2) in Figure 32, its distance apart from shaft center line is large, and the frictional damping producing is little.Two eminences (G1, G2) in Figure 32, its distance apart from shaft center line is little, and the frictional damping producing is large.
Embodiment five
Stretcher in the present embodiment, referring to Figure 33, Figure 34 and Figure 35.
Figure 33 is the stretcher schematic diagram in the present embodiment five; Figure 34 is that D-D in Figure 33 is to sectional view; Figure 35 be E-E in Figure 34 to sectional view, the belt wheels of this figure bottom etc. omit and do not draw.Label declaration in figure: 1-33. damping mechanism cavity; 103-3. damping block; 103-3a. damping block; 133-1. base; 134-3. tension spring; 140-3. central shaft; 142-2. belt wheel; 160. pushing block rocking arm integral pieces; D3. lower; D4. lower; G3. eminence; G4. eminence.
In the present embodiment, damping mechanism cavity 1-33 is arranged in base 133-1.Pushing block and rocking arm merging are fabricated to pushing block rocking arm integral piece 160.One end of central shaft 140-3 is fixedly connected with pushing block rocking arm integral piece 160, and the other end of central shaft 140-3 and base 133-1 are rotationally connected.
Further technical Analysis 1.
Use radially press member, allow radially press member and damping block offset, thereby the wall body that promotes damping block rubbing surface and damping mechanism cavity offsets.Note: Figure 33, Figure 34 and Figure 35 omit and do not draw radially press member.
Further technical Analysis 2.
The dot and dash line of Figure 34 upper level is shaft center line.Little reticle in Figure 35 represents the point that shaft center line is passed.D3 is lower, and D4 is lower, and G3 is eminence, and G4 is eminence; Aforementioned 4 places are promotions place that contact of damping block and pushing block.
Two lowers (D3, D4) in Figure 35, its distance apart from shaft center line is large, and the frictional damping producing is little.Two eminences (G3, G4) in Figure 66, its distance apart from shaft center line is little, and the frictional damping producing is large.
Embodiment six
Device in the present embodiment, is shown in Fig. 1, and Figure 36 to Figure 48.
Accompanying drawing explanation: Fig. 1 is one of schematic diagram of apparatus of the present invention, and in this figure, damping block quantity is 1, and radially press member is hole jump ring, and the reticle in figure is shaft center line; Figure 36 is that Fig. 1 has removed the schematic diagram of hole with jump ring, and the damping block quantity in figure is 1, and reticle is shaft center line; Figure 37 is damping block and the pushing block schematic diagram in Figure 36; Figure 38 is the damping block schematic diagram in Figure 36; Figure 39 is the rear view of Figure 38; Figure 40 is the left view of Figure 38; Figure 41 is the pushing block schematic diagram in Figure 36; Figure 42 is the rear view of Figure 41; Figure 43 is the left view of Figure 41; Figure 44 is the right elevation of Figure 41; Figure 45 is the schematic perspective view of pushing block in Figure 36; Figure 46 is the schematic perspective view of damping block in Figure 36; Figure 47 is three of mechanics analysis figure; Figure 48 is four of mechanics analysis figure.Number in the figure explanation: 1. damping mechanism cavity; 2. hole jump ring; 3. damping block; 3-1. damping block; 3-2. damping block; 4. pushing block; 4-1. pushing block; 6-1. high damping promotes face; 7-1. low resistance promotes face; 8-1. high damping resistance surface; 9-1. low resistance resistance surface; 20-1. dodge region; 20-1a. dodge region; 45-1. rubbing surface; P. active force; P '. active force; P
f. radial component, claims again normal component of force; P '
f. radial component, claims again normal component of force; P
q. tangential component; P '
q. tangential component.
In the present embodiment, radially press member is hole jump ring; Hole is with jump ring in inner side, and the rubbing surface of damping block is in outside.During assembling, use instrument diminishes with opening gathering, the hole of jump ring hole with the outer diameter of jump ring, take advantage of a situation and hole is contained in to the arc step place of damping block with jump ring; When removing the external force of instrument, hole flicks with the opening of jump ring, hole is expanded, is had the trend of recovering original outer diameter size with the outer diameter of jump ring, thereby hole offsets by jump ring outer rim and damping block, and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
Observe Fig. 1, and it is known to observe Figure 36 to Figure 48, high damping resistance surface is less than low resistance resistance surface apart from the distance of shaft center line apart from the distance of shaft center line, causes that the former frictional damping is large and the latter's frictional damping is little, makes a concrete analysis of as follows.
When damping block and damping mechanism cavity relatively rotate, damping block forms active force under the effect of pushing block.
In conjunction with Figure 47 and Figure 48, describe.
Suppose: 1. damping block is motionless and damping mechanism cavity relatively rotates, while 2. loading, damping mechanism cavity generation clockwise direction rotates, and 3. during unloading, damping mechanism cavity occurs counterclockwise to rotate.
Being analyzed as follows of power.
1. for the contrive equipment in the present embodiment, suppose that damping block is motionless, and when loading, damping mechanism cavity occurs to relatively rotate clockwise, its stressing conditions is referring to Figure 47.
Double-lined arrow in Figure 47 represents damping mechanism cavity 1 sense of rotation, and the reticle that " 0 " is located represents rotating center, i.e. the centre point of shaft center line process.
During loading, pushing block promotes face by the high damping in pushing structure and active force is imposed on to the high damping resistance surface of damping block; Because high damping resistance surface is little apart from the distance of shaft center line, thereby the component obtaining in the Normal direction of fricting working surface is large, so frictional damping is large.
2. for the contrive equipment in the present embodiment, suppose that damping block is motionless, and occur to relatively rotate counterclockwise at when unloading, damping mechanism cavity, its stressing conditions is referring to Figure 48.
Single line arrow in Figure 48 represents damping mechanism cavity sense of rotation, and the reticle that " 0 " is located represents rotating center, i.e. the centre point of shaft center line process.
During unloading, pushing block promotes face by the low resistance in pushing structure and active force is imposed on to the low resistance resistance surface of damping block; Because low resistance resistance surface is large apart from the distance of shaft center line, thereby the component obtaining in the Normal direction of fricting working surface is little, so frictional damping is little.
3. while loading, frictional damping is large, during unloading frictional damping little, thereby reached damping force and there is asymmetrical object.
Asymmetric damping characteristics can be weighed with coefficient of asymmetry, and coefficient of asymmetry is defined as loading damping force and the ratio that unloads damping force, and for the symmetrical damping characteristic of prior art, coefficient of asymmetry is 1; The present invention can pass through to adjust the distance of high and low damping resistance surface and shaft center line, and adjusts the friction factor between damping block rubbing surface and damping mechanism cavity circular wall surface, adjusts coefficient of asymmetry, and its value can reach more than 5.
The situation of more asymmetric damping characteristic, inventor has also done lot of experiments and prototype test, has all obtained obvious, good technique effect.
4. in above description, the situation of its hypothesis is: damping block is motionless and damping mechanism cavity relatively rotates.If situation about supposing changes into that damping block relatively rotates, damping mechanism cavity does not rotate, and the situation of the asymmetric damping characteristics occurring is identical.
Claims (16)
1. for the damping device of stretcher, it is characterized in that:
Comprise: pushing block, damping block, the damping mechanism cavity of radially press member, and circular wall;
Described damping block comprises: high damping resistance surface, low resistance resistance surface, and the rubbing surface that is positioned at outside; The circular wall surface configuration of the rubbing surface of damping block and described damping mechanism cavity is coincide, and these two masks have common axis of rotation heart line and this two faces to form fricting working surface;
Around shaft center line, there is relative frictional rotation back and forth with the circular wall surface of damping mechanism cavity in the rubbing surface of damping block;
High damping resistance surface is less than low resistance resistance surface apart from the distance of shaft center line apart from the distance of shaft center line;
Described pushing block comprises pushing structure, and pushing structure comprises that high damping promotes face and low resistance promotes face;
The high damping resistance surface that high damping in pushing structure promotes face and damping block offsets; The low resistance resistance surface that low resistance in pushing structure promotes face and damping block offsets;
Described radially press member, itself and damping block offset, and its circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
2. the damping device for stretcher according to claim 1, is characterized in that:
Described damping block, quantity is more than or equal to 1;
Damping block be two or more, the pushing structure of pushing block comprises promotion separation structure; Promote the quantity of separation structure and the quantity of damping block consistent; Each promotes to include high damping in separation structure and promotes face and low resistance promotion face; The rubbing surface that each damping block includes high damping resistance surface, low resistance resistance surface and is positioned at outside.
3. the damping device for stretcher according to claim 1, is characterized in that:
Described damping block, it is shaped as fan shape, and described fan shape refers to the paper shape after paper folding fan launches; Damping block comprises the small arc surface of inner side and great circle cambered surface and two sides in outside; Two described sides, it is inconsistent that the regional area in an one side and the high damping of pushing block promote face, and this regional area is near apart from shaft center line diametrically; Two described sides, it is inconsistent that the regional area in its another side and the low resistance of pushing block promote face, and this regional area is far away apart from shaft center line diametrically.
4. the damping device for stretcher according to claim 1, is characterized in that:
Described damping block, its outside is large circular arc, and its inner side is little circular arc, and its both sides are as follows;
Described both sides, one side is two line segments, that is: outside, oblique line is interior for straight line radially; Aforementioned two lines, straight line is the edge line of low resistance resistance surface, oblique line forms dodges region;
Described both sides, its opposite side is two line segments, that is: outside, straight line is radially interior for oblique line; Aforementioned two lines, straight line is the edge line of high damping resistance surface, oblique line forms dodges region.
5. the damping device for stretcher according to claim 2, is characterized in that:
Described damping block is shaped as fan shape, and described fan shape refers to the paper shape after paper folding fan launches, i.e. described damping block, and its outside be great circle arc, and its inner side be roundlet arc, and its both sides are the straight line of gathering;
Low resistance promotion face and high damping promotion face are the structural plane of projection;
One side of damping block, it and low resistance promote face and offset in plane-plane contact mode, and offset place close to the orthodrome of outside and away from the small arc-shaped of inner side; The opposite side of damping block, it and high damping promote face and offset in plane-plane contact mode, and the place that offsets is far away and close to the small arc-shaped of inner side from outside orthodrome.
6. the damping device for stretcher according to claim 1, is characterized in that:
Described radially press member is torsion spring; Described torsion spring is in inner side, and the rubbing surface of described damping block is in outside, and torsion spring and damping block elasticity offset and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
7. the damping device for stretcher according to claim 1, is characterized in that:
Described radially press member is hole jump ring; Described hole is with jump ring in inner side, and the rubbing surface of described damping block is in outside, and hole offsets by jump ring and damping block elasticity and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
8. the damping device for stretcher according to claim 1, is characterized in that:
Described damping block, its inner side has arc step;
Described radially press member is torsion spring or hole jump ring;
Radially press member is torsion spring, and the end of torsion spring is positioned at arc step place, and torsion spring and damping block elasticity offset and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets;
Radially press member is hole jump ring, and hole is positioned at arc step place with jump ring, and hole offsets by jump ring and damping block elasticity and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
9. the damping device for stretcher according to claim 1, is characterized in that:
Described radially press member is wavy spring sheet, and wavy spring sheet is arranged between damping block and pushing block; Wavy spring sheet internally offsets with pushing block, and the external and damping block of wavy spring sheet offsets and the circular wall that promotes damping block rubbing surface and damping mechanism cavity offsets.
10. the damping device for stretcher according to claim 1, is characterized in that:
Described stretcher comprises base, rocking arm and central shaft; The end of described rocking arm is provided with end cap;
Described damping mechanism cavity is arranged on rocking arm end; Described central shaft, its one end is fixedly connected with base, and its body portion and rocking arm end are rotationally connected, and its other end is all fixedly connected with end cap with pushing block;
Described pushing block and described end cap merge manufacture and are integrated, or described pushing block and described end cap split manufacture.
11. damping devices for stretcher according to claim 1, is characterized in that:
Described stretcher comprises base, rocking arm and central shaft;
Described damping mechanism cavity is arranged in rocking arm, described pushing block and described base, and both merge to manufacture and are integrated these, or these both splits are manufactured; Described central shaft, its one end and rocking arm are rotationally connected, and its other end is fixedly connected with base with pushing block.
12. damping devices for stretcher according to claim 1, is characterized in that:
Described stretcher comprises base, rocking arm and central shaft;
Described damping mechanism cavity is arranged in base; Described pushing block and described rocking arm, both merge to manufacture and are integrated these, or these both splits are manufactured; Described central shaft, its one end is fixedly connected with pushing block with rocking arm, and its other end and base are rotationally connected.
13. damping devices for stretcher according to claim 1, is characterized in that:
Described stretcher comprises base, rocking arm and central shaft.
14. damping devices for stretcher according to claim 1, is characterized in that:
Described damping device comprises central shaft; Central shaft, it is fixedly connected with pushing block, and itself and damping mechanism cavity are rotationally connected.
15. damping devices for stretcher according to claim 1, is characterized in that:
Described damping device comprises central shaft; Central shaft, itself and pushing block are rotationally connected, and it is fixedly connected with damping mechanism cavity.
16. damping devices for stretcher according to claim 1, is characterized in that:
Described stretcher comprises base, rocking arm and central shaft; Described damping mechanism cavity is arranged on rocking arm end; Described pushing block is located at the bottom of damping mechanism cavity; Described central shaft, its situation about connecting respectively from top to bottom has: be fixedly connected with base, be rotationally connected with rocking arm end, be fixedly connected with pushing block.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242795.7A CN104047985B (en) | 2014-06-03 | 2014-06-03 | Damping unit for stretcher |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242795.7A CN104047985B (en) | 2014-06-03 | 2014-06-03 | Damping unit for stretcher |
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| CN104047985A true CN104047985A (en) | 2014-09-17 |
| CN104047985B CN104047985B (en) | 2018-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410242795.7A Active CN104047985B (en) | 2014-06-03 | 2014-06-03 | Damping unit for stretcher |
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| CN108425580A (en) * | 2017-02-13 | 2018-08-21 | 福特全球技术公司 | Rotary gemel assembly |
| CN111207192A (en) * | 2019-09-30 | 2020-05-29 | 宁波丰茂远东橡胶有限公司 | Automatic tensioner with circular damping sleeve |
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| CN204004129U (en) * | 2014-06-03 | 2014-12-10 | 上海贝尼汽车科技有限公司 | The novel damping device for stretcher |
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| US20020010045A1 (en) * | 2000-01-12 | 2002-01-24 | Alexander Serkh | Damping mechanism for a tensioner |
| US20030119615A1 (en) * | 2001-12-20 | 2003-06-26 | Meckstroth Richard J. | Unidirectional motion asymmetric damped tensioner |
| CN101666369A (en) * | 2009-09-28 | 2010-03-10 | 上海贝尼汽车科技有限公司 | Belt tensioning device of vehicle engine |
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| CN108425580A (en) * | 2017-02-13 | 2018-08-21 | 福特全球技术公司 | Rotary gemel assembly |
| CN108425580B (en) * | 2017-02-13 | 2021-09-10 | 福特全球技术公司 | Rotary hinge assembly |
| CN111207192A (en) * | 2019-09-30 | 2020-05-29 | 宁波丰茂远东橡胶有限公司 | Automatic tensioner with circular damping sleeve |
| CN111207192B (en) * | 2019-09-30 | 2021-01-15 | 宁波丰茂远东橡胶有限公司 | Automatic tensioner with circular damping sleeve |
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| Publication number | Publication date |
|---|---|
| CN104047985B (en) | 2018-08-24 |
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