CN104989793B - Double variable torque shelves friction shoe type stretchers - Google Patents
Double variable torque shelves friction shoe type stretchers Download PDFInfo
- Publication number
- CN104989793B CN104989793B CN201510275283.5A CN201510275283A CN104989793B CN 104989793 B CN104989793 B CN 104989793B CN 201510275283 A CN201510275283 A CN 201510275283A CN 104989793 B CN104989793 B CN 104989793B
- Authority
- CN
- China
- Prior art keywords
- swing arm
- cylinder body
- scroll spring
- torsionspring
- damping element
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/081—Torsion springs
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chairs For Special Purposes, Such As Reclining Chairs (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a kind of pair of variable torque shelves friction shoe type stretcher, it includes cylinder body；Swing arm；Torsionspring, the torsionspring is used to bias the swing arm so that the swing arm is rotated relative to the cylinder body towards first direction, and the torsionspring has the first end engaged with swing arm；Damping element, the inner surface frictional fit of the damping element and cylinder body, torsionspring has the second end engaged with damping element so that when loading the torsionspring along expansion direction, the damping element is oppressed between the second end of the torsionspring and the inner surface of the cylinder body；Scroll spring, the scroll spring is installed between the cylinder body and the swing arm, the scroll spring is used to apply moment of torsion to swing arm so that the swing arm is rotated relative to the cylinder body towards first direction, and the gear mechanism of the torque for adjusting scroll spring is provided with the cylinder body.The present invention can adjust expanding force with suitable for different automobile types by shift.
Description
Technical field
The present invention relates to a kind of stretcher, specifically a kind of pair variable torque shelves friction shoe type stretcher.
Background technology
Accessory drive system is generally included in automobile engine, social now, increasing accessory drive system is logical
Belt is crossed to be transferred to the power of automobile engine on the skin belt pulley being connected with each annex from main shaft.These annexes
Generally include compressor of air conditioner, water pump, alternating current generator, hydraulic pump, servo steering device etc..In this accessory drive system
In, one or more stretchers are generally included, a main function of stretcher is exactly to be provided for the accessory drive system of automobile
Certain belt tension, enable belt car engine mechanomotive force is smoothly delivered on the skin belt pulley of each annex from main shaft and
It is unlikely to skid.
Current stretcher, after assembling, the expanding force of stretcher is fixed, so, when for different automobile types
Stretcher is assembled, often there are different requirements to the expanding force of stretcher, is so accomplished by manufacturing difference for different vehicles
Stretcher, manufacturing cost is higher.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of pair of variable torque shelves friction shoe type stretcher, and it can be with
Expanding force is adjusted by shift with suitable for different automobile types.
In order to solve the above technical problems, double variable torques shelves friction shoe type stretcher that the present invention is provided, it includes：
Cylinder body；
Swing arm, the swing arm is installed on the cylinder body, and relative to cylinder body around a center axis thereof；
Torsionspring, the torsionspring is located between cylinder body and swing arm, and the torsionspring is used to bias the swing arm so that
The swing arm is rotated relative to the cylinder body towards first direction, and the torsionspring has the first end engaged with swing arm；
The inner surface frictional fit of damping element, the damping element and cylinder body, torsionspring has to be engaged with damping element
The second end so that along expansion direction load the torsionspring when, the damping element is oppressed in the torsion bullet
Between the inner surface of the second end of spring and the cylinder body；
Scroll spring, the scroll spring is installed between the cylinder body and the swing arm, and the scroll spring is used for swing arm
Apply moment of torsion so that the swing arm is rotated relative to the cylinder body towards first direction, be provided with the cylinder body for adjusting whirlpool
The gear mechanism of the torque of coil spring；
Described swing arm includes swing arm main body and rotating shaft, and scroll spring is nested with rotating shaft, is provided with cylinder body between circumference
Every multiple gear holes of distribution, one end of scroll spring is provided with the first fixed structure for coordinating with gear hole, scrollwork bullet
The other end of spring is provided with the second fixed structure for being fixed with rotating shaft；
One latch is pluggable to be plugged in gear hole, and one end of described scroll spring is bent into for hooking latch
Hook portion；
A radial direction jack is provided with the outer wall of described rotating shaft, the other end of scroll spring, which is provided with, to be used for and the radial direction
The Access Division that jack is connected and fixed.
After above structure, the present invention compared with prior art, has the following advantages that：
Double variable torques shelves friction shoe type stretcher of the present invention, can adjust the moment of torsion of scroll spring by gear mechanism
Size, to adjust the torque that scroll spring applies to swing arm, can thus adjust the tensioner that swing arm is applied to belt
Power size, can thus adjust the expanding force of double variable torque shelves friction shoe type stretchers by gear mechanism, so same
One double variable torque shelves friction shoe type stretcher just goes for different vehicles.
Described swing arm includes swing arm main body and rotating shaft, and scroll spring is nested with rotating shaft, is provided with cylinder body between circumference
Every multiple gear holes of distribution, one end of scroll spring is provided with the first fixed structure for coordinating with gear hole, scrollwork bullet
The other end of spring is provided with the second fixed structure for being fixed with rotating shaft, so, can by by one end of scroll spring with
Different gear holes are fixed, and to adjust the gear of this pair of variable torque shelves friction shoe type stretcher, shift operation is more convenient.
One latch is pluggable to be plugged in gear hole, and one end of described scroll spring is bent into for hooking latch
Hook portion, so so that one end of scroll spring is easier mutually to fix and depart from latch, and latch can easily grafting
Into each gear hole, it is easy to adjust the gear of double variable torque shelves friction shoe type stretchers.
A radial direction jack is provided with the outer wall of described rotating shaft, the other end of scroll spring, which is provided with, to be used for and the radial direction
The Access Division that jack is connected and fixed, so so that the other end of scroll spring and rotating shaft fixation.
As an improvement, described gear hole has four, four gear hole uniform intervals are distributed, so so that this pair of moment of torsion
Shift friction shoe type stretcher has four gears, goes for a variety of different vehicles, with strong applicability.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the partial sectional view of the present invention；
Fig. 3 is the explosive view of the present invention；
Fig. 4 is the structural representation of swing arm；
Fig. 5 is the structural representation of scroll spring；
Fig. 6 is the structural representation of cylinder body；
Fig. 7 makes the structural representation of damping element.
Wherein, 1, cylinder body；101st, gear hole；2nd, swing arm；201st, swing arm main body；202nd, rotating shaft；2021st, radial direction jack；3、
Torsionspring；301st, first end；302nd, the second end；4th, scroll spring；401st, hook portion；402nd, Access Division；5th, damping element；
501st, groove；6th, latch；7th, belt pulley；8th, mandrel；9th, hoof seat；10th, axle sleeve；X, central axis.
Embodiment
The present invention is described in more detail with reference to the accompanying drawings and detailed description.
As shown in Fig. 1 ~ Fig. 3, the double variable torque shelves friction shoe type stretchers of the present invention, it includes cylinder body 1, swing arm 2, reversed
Spring 3, damping element 5 and scroll spring 4.
Swing arm 2 is installed on the cylinder body 1, is connected between swing arm 2 and cylinder body 1 by rotating shaft 202, and rotating shaft 202 has
Central axis X, swing arm 2 can be rotated relative to cylinder body 1 around the central axis X, and belt pulley 7 is rotatably mounted in swing arm 2, skin
The effect of belt wheel 7 is, for compressing belt, expanding force to be applied to belt, so that belt tension, in favor of the normal fortune of belt
Turn transmission work.
Torsionspring 3 is located between cylinder body 1 and swing arm 2, and torsionspring 3 is used to bias the swing arm 2 so that the swing arm
2 are rotated relative to the cylinder body 1 towards first direction, that is to say, that torsionspring 3 applies to swing arm 2 to be deflected to belt tension direction
Elastic force, herein first direction be defined as the direction as shown in arrow A in Fig. 3, i.e., counterclockwise, the torsionspring 3 has
The first end 301 engaged with swing arm 2, that is to say, that the boss in first end 301 and swing arm 2 offsets fixation.Torsionspring 3
The spring of expanding force is provided in as working spring, i.e., conventional stretcher of the prior art.
Damping element 5 is arranged in the cavity inside cylinder body 1, the inner surface frictional fit of damping element 5 and cylinder body 1, is turned round
Turning spring 3 has the second end 302 engaged with damping element 5, as shown in Figure 7, and damping element 5 has a groove 501, turns round
The second end 302 for turning spring 3 is located in the groove 501 and offseted fixation with the side wall of the groove 501 so that extending evolution
To when loading the torsionspring, the damping element is oppressed in the second end and the cylinder body of the torsionspring
Between surface, so that damping element produces friction damping force, to prevent torsionspring from continuing to load, it can thus cause
Swing arm applies expanding force due to the elastic force and damping element friction damping force of torsionspring to belt, with tensioner belt.Damping
Element 5 is the part of offer friction damping force in the hoof that rubs, i.e., conventional stretcher of the prior art, and hoof seat 9 is located at cylinder
The bottom of body 1, friction hoof is mobilizable to be arranged on hoof seat 9, an axle sleeve 10 is provided with cylinder body 1, torsionspring 3 is nested with axle
On set 10, the upper end and the upper surface of cylinder body 1 of axle sleeve 10 offset, and lower end and the hoof seat 9 of axle sleeve 10 offset.
Scroll spring 4 is installed between the cylinder body 1 and the swing arm 2, and the scroll spring 4, which is used to apply swing arm 2, to be turned round
Square, that is to say, that scroll spring 4 is used for countershaft 202 and applies moment of torsion so that swing arm 2 is rotated relative to cylinder body 1 towards first direction,
First direction is defined as the direction as shown in arrow A in Fig. 3 herein, i.e., counterclockwise, is provided with the cylinder body 1 for adjusting
Save the gear mechanism of the torque of scroll spring 4, that is to say, that the moment of torsion that can adjust scroll spring 4 by gear mechanism is big
It is small, the moment of torsion of swing arm 2 can be thus adjusted, the expanding force of this pair of variable torque shelves friction shoe type stretcher also can be just adjusted
Size.Scroll spring 4 is shift spring, i.e., the spring of the offer variable torque in the stretcher in the present invention.
Hoof seat 9, cylinder body 1 and swing arm 2 are fixed together by mandrel 8 in the present invention, also just simultaneously by torsionspring 3,
Damping element 5, scroll spring 4 and the spacing fixation of axle sleeve 10.
As shown in Fig. 4 ~ Fig. 6, described swing arm 2 includes swing arm main body 201 and rotating shaft 202, swing arm main body 201 and rotating shaft
202 are fixedly connected, and scroll spring 4 is nested with rotating shaft 202, and multiple gear holes of circumferentially-spaced distribution are provided with cylinder body 1
101, one end of scroll spring 4 is provided with the first fixed structure for coordinating with gear hole 101, that is to say, that scroll spring 4
One end can be connected with each gear hole 101, when one end and each gear hole 101 of scroll spring 4 are connected,
I.e. this pair variable torque shelves friction shoe type stretcher adjusts each different gear, and the other end of scroll spring 4, which is provided with, to be used for
The second fixed structure fixed with rotating shaft 202, that is to say, that the another one end of scroll spring 4 is fixed with rotating shaft 202.
One latch 6 is pluggable to be plugged in gear hole 101, and one end of described scroll spring 4 is bent into for hooking
The hook portion 401 of latch 6, latch 6 can be plugged in each gear hole 101, and then hook portion 401 can hook latch 6 and fix, when
When latch 6 is plugged in different gear holes 101, the gear of this pair of variable torque shelves friction shoe type stretcher is different, latch 6
Plug is more convenient, and hook portion 401 is mutually fixed and departed from also more convenient with latch 6 so that gear regulation is more convenient.
A radial direction jack 2021 is provided with the outer wall of described rotating shaft 202, the other end of scroll spring 4, which is provided with, to be used for
The Access Division 402 connected and fixed with the radial direction jack 2021, scroll spring 4 is nested with rotating shaft 202, and then Access Division 402 is blocked
Connect and be fixed in radial direction jack 2021 so that scroll spring 4 and the fixation of rotating shaft 202 so that the torsion of scroll spring 4 can be with
Rotating shaft 202 is delivered to, that is, scroll spring 4 can drive rotating shaft 202 to rotate, also just drives swing arm 2 to rotate.
Described gear hole 101 has four, and four uniform intervals of gear hole 101 distributions also rub with regard to this pair of variable torque shelves
Wiping shoe type stretcher has four gears, when hook portion 401 and the latch 6 of scroll spring 4 are fixed and latch 6 is plugged on different gears
When in hole 101, this pair of variable torque shelves friction shoe type stretcher has different gears, i.e., this pair variable torque shelves friction shoe type
Stretcher has different size of expanding force, as shown in fig. 1, when the hook portion 401 of scroll spring 4 rotates counterclockwise,
The moment of torsion increase of scroll spring 4, also allows for the moment of torsion increase that scroll spring 4 is applied in swing arm, also allows for this pair of moment of torsion
The expanding force increase of shift friction shoe type stretcher, after the hook portion 401 of scroll spring 4 is moved into place, hooks and is plugged on phase
The latch in gear hole answered can complete gear regulation.
Only just present invention application preferably example is made that explanation above, but is not to be construed as the limit to claim
System, structure of the invention can have other changes, be not limited to said structure.In a word, all independent claims in the present invention
Protection domain in the various change made it is within the scope of the present invention.
Claims (2)
1. a kind of pair of variable torque shelves friction shoe type stretcher, it includes：
Cylinder body（1）；
Swing arm（2）, the swing arm（2）It is installed on the cylinder body（1）On, and relative to cylinder body（1）Around a center axis thereof；
Torsionspring（3）, the torsionspring（3）Positioned at cylinder body（1）And swing arm（2）Between, the torsionspring（3）For biasing
State swing arm（2）So that the swing arm（2）Relative to the cylinder body（1）Rotated towards first direction, the torsionspring（3）With with
Swing arm（2）The first end of engagement（301）；
Damping element（5）, the damping element（5）With cylinder body（1）Inner surface frictional fit, torsionspring（3）With with damping
Element（5）The second end of engagement（302）So that when loading the torsionspring along expansion direction, the damping element quilt
Compressing is between the second end of the torsionspring and the inner surface of the cylinder body；
Characterized in that, it also includes：
Scroll spring（4）, the scroll spring（4）It is installed on the cylinder body（1）With the swing arm（2）Between, the scroll spring（4）
For to swing arm（2）Apply moment of torsion so that the swing arm（2）Relative to the cylinder body（1）Rotated towards first direction, the cylinder body
（1）On be provided with for adjusting scroll spring（4）Torque gear mechanism；
Described swing arm（2）Including swing arm main body（201）And rotating shaft（202）, scroll spring（4）It is nested with rotating shaft（202）On, cylinder
Body（1）On be provided with multiple gear holes of circumferentially-spaced distribution（101）, scroll spring（4）One end be provided with and be used for and gear
Hole（101）The first fixed structure of cooperation, scroll spring（4）The other end be provided with and be used for and rotating shaft（202）Fixed second
Fixed structure；
One latch（6）It is pluggable to be plugged on gear hole（101）Interior, described scroll spring（4）One end be bent into for hook
Firmly latch（6）Hook portion（401）；
Described rotating shaft（202）Outer wall on be provided with a radial direction jack（2021）, scroll spring（4）The other end be provided with use
In with the radial direction jack（2021）The Access Division connected and fixed（402）.
2. according to claim 1 pair of variable torque shelves friction shoe type stretcher, it is characterised in that：Described gear hole
（101）There are four, four gear holes（101）Uniform intervals are distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275283.5A CN104989793B (en) | 2015-05-27 | 2015-05-27 | Double variable torque shelves friction shoe type stretchers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510275283.5A CN104989793B (en) | 2015-05-27 | 2015-05-27 | Double variable torque shelves friction shoe type stretchers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104989793A CN104989793A (en) | 2015-10-21 |
| CN104989793B true CN104989793B (en) | 2017-08-29 |
Family
ID=54301649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510275283.5A Expired - Fee Related CN104989793B (en) | 2015-05-27 | 2015-05-27 | Double variable torque shelves friction shoe type stretchers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104989793B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122400B (en) * | 2016-08-29 | 2019-01-18 | 莱顿汽车部件（苏州）有限公司 | A kind of Dual directional tightener and automobile engine system applied to BSG train |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100933816B1 (en) * | 2001-12-05 | 2009-12-24 | 리텐스 오토모티브 파트너쉽 | Timing belt tensioner with stop controlled by friction brake |
| 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 |
| CN202188077U (en) * | 2011-08-11 | 2012-04-11 | 于延军 | Control mechanism for tensioning wheel of driving belt of farm managing machine |
| CN203309039U (en) * | 2013-06-03 | 2013-11-27 | 宁波丰茂远东橡胶有限公司 | Dual spring type tensioning wheel assembly used for engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3025167B2 (en) * | 1995-01-24 | 2000-03-27 | ユニッタ株式会社 | Belt tensioner |
-
2015
- 2015-05-27 CN CN201510275283.5A patent/CN104989793B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100933816B1 (en) * | 2001-12-05 | 2009-12-24 | 리텐스 오토모티브 파트너쉽 | Timing belt tensioner with stop controlled by friction brake |
| 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 |
| CN202188077U (en) * | 2011-08-11 | 2012-04-11 | 于延军 | Control mechanism for tensioning wheel of driving belt of farm managing machine |
| CN203309039U (en) * | 2013-06-03 | 2013-11-27 | 宁波丰茂远东橡胶有限公司 | Dual spring type tensioning wheel assembly used for engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104989793A (en) | 2015-10-21 |
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| GR01 | Patent grant | ||
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Granted publication date: 20170829 Termination date: 20200527 |