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CN105757152A - Plate spring, plate spring set and compressor - Google Patents

Plate spring, plate spring set and compressor Download PDF

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Publication number
CN105757152A
CN105757152A CN201410796218.2A CN201410796218A CN105757152A CN 105757152 A CN105757152 A CN 105757152A CN 201410796218 A CN201410796218 A CN 201410796218A CN 105757152 A CN105757152 A CN 105757152A
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Prior art keywords
circular arc
arc
pair
fixing
flat spring
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CN105757152B (en
Inventor
魏会军
崔中
黄建平
梁苡铭
陈柱锦
张建伟
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Gree Electric Appliances Inc of Zhuhai
Gree Green Refrigeration Technology Center Co Ltd of Zhuhai
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Zhuhai Gree Energy Saving Environmental Protection Refrigeration Technology Research Center Co Ltd
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Publication of CN105757152A publication Critical patent/CN105757152A/en
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Abstract

The invention discloses a plate spring, a plate spring set and a compressor, wherein the plate spring comprises two elastic arms and a fixing device used for installation and positioning; the structures of the two elastic arms are same and are formed by tangency of a plurality of concentric circular arcs or eccentric circular arcs; the radii of the plurality of concentric circular arcs or eccentric circular arcs increase from inside to outside gradually, and all the concentric circular arcs or eccentric circular arcs are located on the same straight line; the initial ends of the two elastic arms are tagent, and an inner fixing hole is formed in the connection position of the two elastic arms which are uniformly distributed taking the inner fixing hole as the center; the tail ends of the two elastic arms are connected with fixing device respectively. The plate spring has smaller equivalent mass and higher inherent frequency and rigidity. The plate spring set comprises a plurality of plate springs, and the rigidity among relative moving parts can be improved. According to the compressor, the plate spring set is adopted, so that the rigidity among the relative moving parts is improved, the weight is light, and the service life is long.

Description

Flat spring, plate spring groups and compressor
Technical field
The present invention relates to spring technical field, particularly relate to the plate spring groups of a kind of flat spring and multiple flat spring composition and the compressor that comprises this plate spring groups.
Background technology
Flat spring support technology is one of key technology of Linearkompressor.Relative to traditional cylindrical spring, flat spring has bigger radial rigidity so that piston will not produce radial displacement at the volley due to vibration, it is to avoid the directly contact between piston and cylinder;And the axial rigidity of flat spring is much smaller than its radial rigidity, it is possible to make piston move back and forth freely in the cylinder.
To be the patent disclosure of CN101892971A a kind of adopts the Linearkompressor of two kinds of different molded line plate spring supporting systems for the patent No., and the equivalent mass of its flat spring is excessive, it is difficult to meet the altofrequency of linear compressor, the demand of low equivalent mass.The patent No. a kind of swirl arm flat spring that has been the patent disclosure of JP2003247580 (A), the patent No. a kind of linear arm flat spring that has been the patent disclosure of CN201010248988.5 and a kind of swirl arm flat spring, in the two patent, disclosed swirl arm flat spring all there is problems in that the equivalent mass of flat spring is excessive, for meeting rigidity and natural frequency requirement, the quality of parts can be increased.
So, traditional flat spring limits due to self structure, it is difficult to meet low equivalent mass, high rigidity and high-frequency demand.
Summary of the invention
Based on this, it is necessary to for defect and the deficiency of prior art, it is provided that the plate spring groups of a kind of flat spring with low equivalent mass, high rigidity and high model frequency and multiple flat spring composition and the compressor that comprises this plate spring groups.
The flat spring provided for realizing the object of the invention, including two elastic arms and for installing the fixing device of location;
Article two, the structure of described elastic arm is identical, forms isocentric circular arc or eccentric arc are tangent by some;Described some isocentric circular arc or eccentric arc radius from inside to outside being gradually increased, the center of circle of all of described isocentric circular arc or eccentric arc is all on same straight line;
Article two, the initial end of described elastic arm is tangent, and its junction is provided with an interior fixing hole, and two described elastic arms are uniformly distributed centered by described interior fixing hole;
Article two, the end of described elastic arm connects described fixing device respectively.
Wherein in an embodiment, being positioned at isocentric circular arc or eccentric arc described in a pair of outmost turns and be not more than half-turn, described isocentric circular arc or eccentric arc are half-turn by all the other.
Wherein in an embodiment, described fixing device is a circular ring for fixing;
Described interior fixed hole position is in the center of described ring for fixing, and two described elastic arms are with the center of described ring for fixing for initiating terminal, spiral extension in the periphery to described ring for fixing;
Article two, the end of described elastic arm is connected by arc transition with described ring for fixing respectively;
Described ring for fixing is provided with extenal fixation hole.
Wherein in an embodiment, described elastic arm is formed described isocentric circular arc or eccentric arc are tangent by n, and from inside to outside, isocentric circular arc or eccentric arc are met below equation by described n:
First couple of arc radius: R11, R12=R11+e1+b;
Second couple of arc radius: R21=R11+R12+ J/2, R22=R21+e2+(R12-R11)+e1
I-th (n >=i >=3) are to arc radius: Ri1=R(i-1)1+ J, Ri2=Ri1+ei+(R(i-1)2-R(i-1)1)+e(i-1)
Wherein, R11It is the inner circle radius of first pair of circular arc, R12It is the exradius of first pair of circular arc, R21It is the inner circle radius of second pair of circular arc, R22It is the exradius of second pair of circular arc, Ri1For the inner circle radius of i-th pair circular arc, Ri2Exradius for i-th pair circular arc;
e1It is the distance in the deviation inner circle center of circle, the cylindrical center of circle of first pair of circular arc, e2It is the distance in the deviation inner circle center of circle, the cylindrical center of circle of second pair of circular arc, eiDistance for the deviation inner circle center of circle, the cylindrical center of circle of i-th pair circular arc;
B is the arm width of the initiating terminal of two described elastic arms, and J is the gap between two described elastic arms.
Wherein in an embodiment, the thickness of the described elastic arm more than 0.1 times of the gap between two described elastic arms.
Wherein in an embodiment, the arm width of described elastic arm is steady state value.
Wherein in an embodiment, the arm width of described elastic arm is gradually increased by initiating terminal terminad.
Wherein in an embodiment, described elastic arm is by 3 pairs of isocentric circular arc or eccentric arc is tangent forms.
The plate spring groups of the present invention includes multiple above-mentioned flat spring, is provided with pad between multiple described flat springs.
The compressor of the present invention includes above-mentioned plate spring groups.
Beneficial effects of the present invention: the flat spring of the present invention is by arranging two axially symmetric elastic arms, there is less equivalent mass, higher natural frequency and rigidity, avoid the requirement meeting rigidity and natural frequency by increasing the quality of parts, thus alleviating product quality, add life of product, save cost.Plate spring groups provided by the invention, is stacked use by multiple above-mentioned flat springs, can improve the rigidity between relative movement part.Compressor provided by the invention, owing to adopting the plate spring groups of the present invention, improves the rigidity between relative movement part, alleviates the weight of product, extend the life-span of product.
Accompanying drawing explanation
In order to make the purpose of the flat spring of the present invention, plate spring groups and compressor, technical scheme and advantage clearly understand, below in conjunction with concrete drawings and the specific embodiments, the flat spring of the present invention, plate spring groups and compressor are further elaborated.
Fig. 1 is the structural representation of spring vibration system;
Fig. 2 is the structural representation of an embodiment of the flat spring of the present invention;
Fig. 3 and Fig. 2 is identical, illustrated therein is the gap between the arm width of the initiating terminal of two elastic arms and two elastic arms;
Fig. 4 is the sectional view of the embodiment one of the flat spring of the present invention;
Fig. 5 is the sectional view of the embodiment two of the flat spring of the present invention;
Fig. 6 is the side view of an embodiment of the flat spring of the present invention.
Fig. 7 is the structural representation of an embodiment of the compressor of the present invention.
Detailed description of the invention
The present invention is described in detail below in conjunction with embodiment.It should be noted that when not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
First the equivalent mass of flat spring is done an explanation:
Spring-mass vibrational system as shown in Figure 1.If the quality of spring is ms, static balance duration is L, and in vibration, the end displacement of spring is u (t).According to the conclusion that straight-bar tension and compression Static Correction in the mechanics of materials is linearly distributed along bar, the vibration displacement distribution that can be approximately considered spring is linear.Therefore, on spring coordinate to be the displacement in cross section, x place beThe spring section quality that length is dx is msDx/L, then the kinetic energy of spring is T S = ∫ 0 L 1 2 m S L v 2 ( x , t ) dx = 1 2 m s 3 u ( t ) 2 , So whole system kinetic energy is T = 1 2 ( m + m s 3 ) u ( t ) 2 . The reference kinetic energy of whole system isAnd, Tmax=wn 2Tref, the maximum potential of whole system isBy conservation condition of mechanical energy Tmax=VmaxCan obtainWherein, a is the elongation of spring, and k is the stiffness factor of spring, wnFrequency of vibration for spring.By obtaining aboveAs m=0, havemDengFor spring equivalent mass in vibrational system, wdNatural frequency for spring.In like manner for flat spring, its equivalent mass isBy CAE simulation, the model of flat spring is analyzed obtaining the natural frequency w of its axial rigidity k and axial vibrationd, thus its equivalent mass in whole vibrational system can be obtained.
As known from the above, the equivalent mass of flat spring is determined by the practical structures of flat spring, is namely determined by the natural frequency of flat spring and axial rigidity.It is desirable that the equivalent mass m of flat springDengQuality m with flat springsRatio the smaller the better, this ratio of existing concentric spirals arm equiarm wide plate spring is about 50%, this ratio of eccentric vortex spiral arm flat spring can be bigger, and the present invention is by changing the structure of flat spring, for instance reduces m by reducing the occupancy volume of the material of flat spring structure mid portionDeng/msRatio.
Based on this, referring to Fig. 2 and Fig. 3, the invention provides a kind of flat spring, including two axially symmetric elastic arms 100.Specifically, the structure of two elastic arms 100 is identical, forms isocentric circular arc or eccentric arc are tangent by some, some isocentric circular arc or eccentric arc radius from inside to outside is gradually increased, and the center of circle of all of isocentric circular arc or eccentric arc is all on same straight line.Article two, the initial end of elastic arm 100 is tangent, and the junction between initial end is provided with an interior fixing hole 110.Article two, elastic arm 100 is uniformly distributed centered by this interior fixing hole 110.
Flat spring provided by the invention also includes a fixing device 200, and the end of two elastic arms 100 connects fixing device 200 respectively.Fixing device 200 is used for installing location, and its structure according to actual installation situation, can be designed as location hole or screw hole etc. accordingly.
Accordingly, as shown in Figures 2 and 3, a pair isocentric circular arc or the eccentric arc that are positioned at outmost turns are not more than half-turn, it is simple to its end realizes arc transition with fixing device 200 and is connected, and isocentric circular arc or eccentric arc are half-turn by all the other.
As shown in Figures 2 and 3, fixing device 200 could be arranged to a circular ring for fixing, ring for fixing is symmetrically arranged with 2 extenal fixation holes 210, for fixing with corresponding mounting structure.Specifically, interior fixing hole 110 is positioned at the center of ring for fixing, and two elastic arms 100 are with the center of ring for fixing for initiating terminal, and extension of spiraling to the periphery of ring for fixing, the end of two elastic arms is connected by arc transition with ring for fixing respectively.
In above-mentioned flat spring, it is assumed that two elastic arms 100 are formed isocentric circular arc or eccentric arc are tangent by n, and from inside to outside, isocentric circular arc or eccentric arc are met below equation by n:
First couple of arc radius: R11, R12=R11+e1+b;
Second couple of arc radius: R21=R11+R12+ J/2, R22=R21+e2+(R12-R11)+e1
I-th (n >=i >=3) are to arc radius: Ri1=R(i-1)1+ J, Ri2=Ri1+ei+(R(i-1)2-R(i-1)1)+e(i-1)
Wherein, R11It is the inner circle radius of first pair of circular arc, R12It is the exradius of first pair of circular arc, R21It is the inner circle radius of second pair of circular arc, R22It is the exradius of second pair of circular arc, Ri1For the inner circle radius of i-th pair circular arc, Ri2Exradius for i-th pair circular arc.e1It is the distance in the deviation inner circle center of circle, the cylindrical center of circle of first pair of circular arc, e2It is the distance in the deviation inner circle center of circle, the cylindrical center of circle of second pair of circular arc, eiDistance for the deviation inner circle center of circle, the cylindrical center of circle of i-th pair circular arc.Participating in the arm width of the initiating terminal that Fig. 3, b are two elastic arms, J is the gap between two elastic arms.
The molded line of the elastic arm of the present invention has clear and definite expression formula, according to this expression formula, can control the width of elastic arm.As taken ei=0 (i=1~n), then be wide many circle arm flat springs.As taken ei> 0 (i=3~n), just can obtain the not wide many circle wallboard springs broadened gradually by center.Below the molded line of the how round wallboard spring of both is elaborated respectively:
Embodiment one, referring to Fig. 4;
Flat spring in the present embodiment is wide many circle arm flat springs 300.Wide many circle arm flat springs 300 in the present embodiment include two axially symmetric elastic arms 310,320 and a circular ring for fixing 330, ring for fixing 330 are provided with extenal fixation hole 331, for fixing with corresponding mounting structure.
Article two, the structure of elastic arm 310,320 is identical, and the width from initiating terminal to end is steady state value, and namely width is constant, by 3 pairs of isocentric circular arc or eccentric arc is tangent forms.3 pairs of isocentric circular arc or eccentric arc radius from inside to outside are gradually increased, and its center of circle is all on same straight line.Article two, the initial end of elastic arm 310,320 is tangent, and the junction between initial end is provided with an interior fixing hole 340, and two elastic arms 310,320 are uniformly distributed centered by this interior fixing hole 340.
Interior fixing hole 340 is positioned at the center of ring for fixing 330, and two elastic arms 310,320 are with the center of ring for fixing 330 for initiating terminal, spiral extension in the periphery to ring for fixing 330.Article two, the end of elastic arm 310,320 is connected by arc transition with ring for fixing 330 respectively.
Embodiment two, referring to Fig. 5;
Flat spring in the present embodiment is not wide many circle arm flat springs 400.Not wide many circle arm flat springs 400 in the present embodiment include two axially symmetric elastic arms 410,420 and a circular ring for fixing 430, ring for fixing 430 are provided with extenal fixation hole 431, for fixing with corresponding mounting structure.
Article two, the structure of elastic arm 410,420 is identical, center outwards (from initiating terminal to end) broaden gradually, by 3 pairs of isocentric circular arc or eccentric arc is tangent forms.3 pairs of isocentric circular arc or eccentric arc radius from inside to outside are gradually increased, and its center of circle is all on same straight line.Article two, the initial end of elastic arm 410,420 is tangent, and the junction between initial end is provided with an interior fixing hole 440, and two elastic arms 410,420 are uniformly distributed centered by this interior fixing hole 440.
Interior fixing hole 440 is positioned at the center of ring for fixing 430, and two elastic arms 410,420 are with the center of ring for fixing 430 for initiating terminal, spiral extension in the periphery to ring for fixing 430.Article two, the end of elastic arm 410,420 is connected by arc transition with ring for fixing 430 respectively.
It is as shown in the table as follows for the concrete structure parameter of the flat spring of two kinds of structures that above-described embodiment one and embodiment two provide:
Table 1
Wide many circle arm flat springs shown in Fig. 4 on year-on-year basis, shown in Fig. 5, not wide many circle arm flat spring the 1st order mode state frequencies admittedly improve 35.1%;Spring rate improves 112.3%;Equivalent mass reduces by 8.8%.Comparatively speaking, center it is low that the not wide many circle wallboard springs broadened gradually are easier to realize equivalent mass, and spring rate is big, the high requirement of model frequency.
Referring to Fig. 3 and Fig. 6, owing to the flat spring of the present invention has two elastic arms, for avoiding the interference between arm and arm, the thickness t of the elastic arm more than 0.1 times of the gap J between two elastic arms in the present invention, to ensure, between two elastic arms, there is enough gaps, meet processes requirement simultaneously.
On this basis, present invention also offers a kind of plate spring groups, including multiple above-mentioned flat springs, multiple above-mentioned flat springs stack use, can improve the rigidity between relative movement part.It is also provided with pad between multiple flat springs.Pad is arranged on the bearing of plate spring groups.The concentrated stress adding the bearing reducing plate spring groups on the one hand of pad, prevents the fretting wear between adjacent panels spring on the other hand, extends the service life of plate spring groups.
Referring to Fig. 7, present invention also offers a kind of compressor, including above-mentioned plate spring groups 001.The compressor of the present invention, after motor coil is energized, electric motor internal stator and external stator form Guan Bi alternation magnetic circuit, and drive motor mover 002 moves, thus driving piston 003 reciprocating relative to the cylinder frame of cylinder 004, it is achieved the process of the suction of gas, compression and discharge.Gas is inhaled in housing through housing air entry 005, and in housing, low-pressure gas is inhaled into compressor chamber.After gas in cavity is compressed, when pressure reaches a timing, air bleeding valve 006 is opened, and gases at high pressure arrive air vent 008 through inside exhaust pipe 007, and to be discharged to compression case external.By adopting above-mentioned plate spring groups to realize piston and the cylinder earth's axis to elastic bearing, it is achieved the function of resonant springs.
The flat spring of the present invention, have less equivalent mass, higher natural frequency and rigidity, it is to avoid meets the requirement of rigidity and natural frequency by increasing the quality of parts, thus alleviating product quality, adding life of product, having saved cost.Plate spring groups provided by the invention, is stacked use by multiple above-mentioned flat springs, can improve the rigidity between relative movement part.Compressor provided by the invention, owing to adopting the plate spring groups of the present invention, improves the rigidity between relative movement part, alleviates the weight of product, extend the life-span of product.
Above example only have expressed the several embodiments of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for the person of ordinary skill of the art, without departing from the inventive concept of the premise, it is also possible to making some deformation and improvement, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.

Claims (10)

1. a flat spring, it is characterised in that include two elastic arms (100) and for installing the fixing device (200) of location;
Article two, the structure of described elastic arm (100) is identical, forms isocentric circular arc or eccentric arc are tangent by some;Described some isocentric circular arc or eccentric arc radius from inside to outside being gradually increased, the center of circle of all of described isocentric circular arc or eccentric arc is all on same straight line;
Article two, the initial end of described elastic arm (100) is tangent, and its junction is provided with an interior fixing hole (110), and two described elastic arms (100) are uniformly distributed centered by described interior fixing hole (110);
Article two, the end of described elastic arm (100) connects described fixing device (200) respectively.
2. flat spring according to claim 1, it is characterised in that being positioned at isocentric circular arc or eccentric arc described in a pair of outmost turns and be not more than half-turn, described isocentric circular arc or eccentric arc are half-turn by all the other.
3. flat spring according to claim 2, it is characterised in that described fixing device (200) is a circular ring for fixing;
Described interior fixing hole (110) is positioned at the center of described ring for fixing, and two described elastic arms (100) are with the center of described ring for fixing for initiating terminal, spiral extension in the periphery to described ring for fixing;
Article two, the end of described elastic arm (100) is connected by arc transition with described ring for fixing respectively;
Described ring for fixing is provided with extenal fixation hole (210).
4. the flat spring according to any one of claims 1 to 3, it is characterised in that described elastic arm (100) is formed described isocentric circular arc or eccentric arc are tangent by n, from inside to outside, isocentric circular arc or eccentric arc are met below equation by described n:
First couple of arc radius: R11, R12=R11+e1+b;
Second couple of arc radius: R21=R11+R12+ J/2, R22=R21+e2+(R12-R11)+e1
I-th (n >=i >=3) are to arc radius: Ri1=R(i-1)1+ J, Ri2=Ri1+ei+(R(i-1)2-R(i-1)1)+e(i-1)
Wherein, R11It is the inner circle radius of first pair of circular arc, R12It is the exradius of first pair of circular arc, R21It is the inner circle radius of second pair of circular arc, R22It is the exradius of second pair of circular arc, Ri1For the inner circle radius of i-th pair circular arc, Ri2Exradius for i-th pair circular arc;
e1It is the distance in the deviation inner circle center of circle, the cylindrical center of circle of first pair of circular arc, e2It is the distance in the deviation inner circle center of circle, the cylindrical center of circle of second pair of circular arc, eiDistance for the deviation inner circle center of circle, the cylindrical center of circle of i-th pair circular arc;
B is the arm width of the initiating terminal of two described elastic arms (100), and J is the gap between two described elastic arms (100).
5. the flat spring according to any one of claims 1 to 3, it is characterised in that the thickness of the described elastic arm (100) more than 0.1 times of the gap between two described elastic arms (100).
6. the flat spring according to any one of claims 1 to 3, it is characterised in that the arm width of described elastic arm (100) is steady state value.
7. the flat spring according to any one of claims 1 to 3, it is characterised in that the arm width of described elastic arm (100) is gradually increased by initiating terminal terminad.
8. the flat spring according to any one of claims 1 to 3, it is characterised in that described elastic arm (100) is formed by connecting by 3 pairs of isocentric circular arc or eccentric arc.
9. a plate spring groups, it is characterised in that include the flat spring described in multiple any one of claim 1-8, be provided with pad between multiple described flat springs.
10. a compressor, it is characterised in that include the plate spring groups described in claim 9.
CN201410796218.2A 2014-12-18 2014-12-18 Flat spring, plate spring groups and compressor Active CN105757152B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106224419A (en) * 2016-08-19 2016-12-14 珠海格力节能环保制冷技术研究中心有限公司 Flat spring and compressor
CN108194561A (en) * 2018-02-22 2018-06-22 方舟 A kind of acoustic energy refrigeration machine and its damper
CN108458017A (en) * 2017-10-31 2018-08-28 山东中科万隆电声科技有限公司 A kind of combined type leaf spring
CN110388399A (en) * 2019-07-29 2019-10-29 辽宁工程技术大学 Multi-line arm leaf spring for refrigeration compressor
CN110439945A (en) * 2019-08-15 2019-11-12 辽宁工程技术大学 A kind of linear flat spring of refrigeration compressor assembly type
CN112664597A (en) * 2020-12-16 2021-04-16 中国航发控制系统研究所 Rotary diaphragm spring

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CN101892971A (en) * 2010-08-06 2010-11-24 浙江大学 Linear compressors with two different types of linear leaf spring support systems
CN204357997U (en) * 2014-12-18 2015-05-27 珠海格力节能环保制冷技术研究中心有限公司 Leaf spring, plate spring groups and compressor

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Publication number Priority date Publication date Assignee Title
JP2001304316A (en) * 2000-04-20 2001-10-31 Sanyo Electric Co Ltd Suspension spring
JP2003247580A (en) * 2002-02-26 2003-09-05 Sharp Corp Flat spring, linear motor compressor, and stirling engine
CN1840926A (en) * 2005-03-29 2006-10-04 三电有限公司 Electromagnetic clutch
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106224419A (en) * 2016-08-19 2016-12-14 珠海格力节能环保制冷技术研究中心有限公司 Flat spring and compressor
CN106224419B (en) * 2016-08-19 2018-06-12 珠海格力节能环保制冷技术研究中心有限公司 Flat spring and compressor
CN108458017A (en) * 2017-10-31 2018-08-28 山东中科万隆电声科技有限公司 A kind of combined type leaf spring
CN108458017B (en) * 2017-10-31 2024-03-29 山东中科万隆电声科技有限公司 Combined plate spring
CN108194561A (en) * 2018-02-22 2018-06-22 方舟 A kind of acoustic energy refrigeration machine and its damper
CN110388399A (en) * 2019-07-29 2019-10-29 辽宁工程技术大学 Multi-line arm leaf spring for refrigeration compressor
CN110388399B (en) * 2019-07-29 2021-10-08 辽宁工程技术大学 A kind of multi-line arm plate spring for refrigeration compressor
CN110439945A (en) * 2019-08-15 2019-11-12 辽宁工程技术大学 A kind of linear flat spring of refrigeration compressor assembly type
CN112664597A (en) * 2020-12-16 2021-04-16 中国航发控制系统研究所 Rotary diaphragm spring

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