CN108194548B - Plate spring, plate spring set and compressor - Google Patents
Plate spring, plate spring set and compressor Download PDFInfo
- Publication number
- CN108194548B CN108194548B CN201711458835.1A CN201711458835A CN108194548B CN 108194548 B CN108194548 B CN 108194548B CN 201711458835 A CN201711458835 A CN 201711458835A CN 108194548 B CN108194548 B CN 108194548B
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- arc section
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- circular arc
- line
- base plate
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- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
- F16F1/185—Leaf springs characterised by shape or design of individual leaves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/025—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant characterised by having a particular shape
- F16F1/027—Planar, e.g. in sheet form; leaf springs
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- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F3/00—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic
- F16F3/02—Spring units consisting of several springs, e.g. for obtaining a desired spring characteristic with springs made of steel or of other material having low internal friction
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2230/00—Purpose; Design features
- F16F2230/22—Pumps
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2234/00—Shape
- F16F2234/06—Shape plane or flat
Abstract
The invention provides a plate spring, a plate spring group and a compressor, wherein the plate spring comprises a base plate, a central hole is arranged at the axle center of the base plate, a plurality of fixing holes are arranged near the periphery of the base plate, at least two vortex grooves extending in a vortex shape are arranged on the base plate, the at least two vortex grooves are uniformly distributed by taking the central hole as the axle center, the part of the base plate between two adjacent vortex grooves forms a vortex arm, the vortex grooves are provided with an inner vortex line, an outer vortex line and a closed contour which is arranged adjacent to the periphery of the base plate in a protruding way, the closed contour is formed by smoothly connecting a second arc section, a first arc section, a third arc section, a vertical line section and a fourth arc section. The area of the closed contour is regulated by modifying various parameters, so as to regulate the moving quality of the leaf spring, the spring vibrator system of the whole machine can achieve resonance, and the performance of the whole machine is improved. And by the above way to the vortex groove is subjected to expansion cutting, does not affect the leaf spring stiffness and other mechanical properties.
Description
Technical Field
The invention relates to the technical field of acoustic energy refrigerator equipment, in particular to a leaf spring, a leaf spring group and a compressor.
Background
The compressor section of current small cryocoolers mostly employs linear compressor drive and flexible plate spring support technology. The flexible plate spring can provide larger radial rigidity while meeting the axial rigidity requirement of the refrigerator, and prevent the piston from directly contacting with the cylinder, thereby realizing gap sealing.
In the dynamic design of a small-sized cryocooler, in order to make the spring vibrator system of the whole machine reach resonance, the quality of a control subsystem is very critical. The leaf springs are also of particular importance for their quality control as part of the overall subsystem. In general, since the outer circumference of the leaf spring is fixed, the part actually participating in the reciprocating vibration is only the scroll arm part, and 1/3 of the total mass of the leaf spring is taken as the mover mass generally empirically. When the leaf spring thickness or the leaf spring arm width is changed to adjust the leaf spring mass, the actually changed rotor mass is not the actually increased or decreased mass of the leaf spring, and the leaf spring mass is adjusted by changing the thickness and the arm width, so that the rigidity and the stress of the leaf spring are influenced, and the design is not difficult; if the rotor mass is adjusted by cutting the vortex arm at will, the plate spring molded line is incomplete, and the performance of the plate spring is greatly affected.
Disclosure of Invention
A first object of the present invention is to provide a leaf spring that can precisely adjust the moving mass without affecting the stiffness and other mechanical properties of the leaf spring.
A second object of the present invention is to provide a leaf spring set using the leaf springs described above.
A third object of the present invention is to provide a compressor using the above plate spring set.
In order to achieve the first object of the present invention, there is provided a leaf spring comprising a base plate, a center hole is provided in an axial center of the base plate, wherein a plurality of fixing holes are provided adjacent to an outer periphery of the base plate, at least two vortex grooves extending in a vortex shape are provided on the base plate, the at least two vortex grooves are uniformly distributed with the center hole as an axial center, a vortex arm is formed at a portion of the base plate between the adjacent two vortex grooves, the vortex grooves have an inner vortex line, an outer vortex line and a closed contour protruding from the outer periphery of the adjacent base plate, a length of an extension line extending radially with the center hole center as a starting point and passing through the starting point of the inner vortex line is 5.0 to 30 mm, a first arc section is formed with a tail end of the extension line as a center and a radius of 5.0 to 20 mm, an included angle between the starting point and the end point of the first arc section is 10 ° to 50 °, a concave second arc section is arranged between the starting point of the first arc section and the outer vortex line, the radius of the second arc section is 0.2-3.0 mm and is tangential to the outer vortex line, the tail end of the extension line is connected with the end point of the first arc section, an intersection point is formed through the outer vortex line when the tail end of the extension line is connected with the outer vortex line, a third arc section is formed by taking the intersection point as a circle center and taking the end point of the first arc section as a starting point, an included angle between the starting point and the end point of the third arc section is 45-100 degrees, a vertical line is vertically extended from the end point of the third arc section in the radial direction, a concave fourth arc section is arranged between the end point of the vertical line and the outer vortex line and is tangential to the end point of the vertical line, the radius of the fourth arc section is 0.2-3.0 mm, an included angle between the starting point and the end point of the fourth arc section is 35-90 degrees, and the closed contour is formed by the second arc section, the first arc section, the third arc section, the vertical line section and the fourth arc section are smoothly connected.
Still further, the length of the extension line is 20 mm.
Still further, the radius of the first circular arc segment is 12 mm.
Still further, the angle between the start point and the end point of the first circular arc segment is 38 °.
Still further, the radius of the second arc segment is 1.0 mm.
In a further embodiment, the angle between the start point and the end point of the third arc segment is 85 °.
In a further embodiment, the angle between the start and end of the fourth arc segment is 57 °.
Still further, the radius of the fourth arc segment is 1.5 mm.
According to the scheme, the area surrounded by the second circular arc section, the first circular arc section, the third circular arc section, the vertical line section and the fourth circular arc section is a part cut off by the closed contour, the area of the closed contour is regulated by modifying parameters such as an included angle between the starting point and the end point of the first circular arc section, an included angle between the starting point and the end point of the third circular arc section, the length of an extension line, the radius of the first circular arc section and the like, and then the moving quality of the leaf spring is regulated, so that the spring vibrator system of the whole machine is enabled to achieve resonance, and the performance of the whole machine is improved. In addition, the vortex groove is enlarged and cut through the mode, and the rigidity and other mechanical properties of the plate spring are not affected.
In order to achieve the second object of the present invention, there is provided a leaf spring group including a plurality of leaf springs, a spacer being provided between two adjacent leaf springs, the leaf springs including a base plate, a center hole being provided at an axial center of the base plate, wherein a plurality of fixing holes being provided adjacent to an outer periphery of the base plate, at least two vortex grooves extending in a vortex shape being provided on the base plate, the at least two vortex grooves being uniformly distributed with the center hole as an axial center, a portion of the base plate located between the two adjacent vortex grooves forming a vortex arm, the vortex grooves having an inner vortex line, an outer vortex line, and a closed contour being provided in a convex manner adjacent to the outer periphery of the base plate, a length of an extension line extending radially with a center hole center as a starting point and passing through a starting point of the inner vortex line being 5.0 to 30 mm, a first arc section being formed with a tail end of the extension line as a center and a radius being 5.0 to 20 mm, an included angle between the starting point and a terminal point of the first arc section being 10 ° to 50 °, a concave second arc section is arranged between the starting point of the first arc section and the outer vortex line, the radius of the second arc section is 0.2-3.0 mm and is tangential to the outer vortex line, the tail end of the extension line penetrates through the outer vortex line to form an intersection point when being connected with the end point of the first arc section, a third arc section is formed by taking the intersection point as a circle center and taking the end point of the first arc section as a starting point, an included angle between the starting point and the end point of the third arc section is 45-100 degrees, a vertical line section is vertically extended from the end point of the third arc section in the radial direction of the third arc section, a concave fourth arc section is arranged between the end point of the vertical line section and the outer vortex line, the fourth arc section is tangential to the end point of the outer vortex line and the vertical line, the radius of the fourth arc section is 0.2-3.0 mm, and the included angle between the starting point and the end point of the fourth arc section is 35-90 degrees, the closed contour is formed by smoothly connecting a second arc section, a first arc section, a third arc section, a vertical line section and a fourth arc section.
According to the scheme, the area surrounded by the second circular arc section, the first circular arc section, the third circular arc section, the vertical line section and the fourth circular arc section is a part cut off by the closed contour, the area of the closed contour is regulated by modifying parameters such as an included angle between the starting point and the end point of the first circular arc section, an included angle between the starting point and the end point of the third circular arc section, the length of an extension line, the radius of the first circular arc section and the like, and then the moving quality of the leaf spring is regulated, so that the spring vibrator system of the whole machine is enabled to achieve resonance, and the performance of the whole machine is improved. In addition, the vortex groove is enlarged and cut through the mode, and the rigidity and other mechanical properties of the plate spring are not affected.
In order to achieve the third object of the present invention, the present invention provides a compressor including a plate spring group including a plurality of plate springs, a gasket being provided between adjacent two plate springs, the plate springs including a base plate, a center hole being provided at an axial center of the base plate, wherein a plurality of fixing holes being provided adjacent to an outer circumference of the base plate, at least two scroll grooves extending in a vortex shape being provided on the base plate, the at least two scroll grooves being uniformly distributed with the center hole as an axial center, a portion of the base plate between the adjacent two scroll grooves forming a scroll arm, the scroll grooves having an inner vortex line, an outer vortex line, and a closed contour being provided in a convex manner adjacent to the outer circumference of the base plate, a length of an extension line radially extending with a center hole center as a starting point and passing through a starting point of the inner vortex line being 5.0 to 30 mm, a first arc section being formed with a tail end of the extension line as a center and a radius being 5.0 to 20 mm, an included angle between a starting point and an ending point of the first arc section is 10 degrees to 50 degrees, a concave second arc section is arranged between the starting point of the first arc section and an outer vortex line, the radius of the second arc section is 0.2 to 3.0 millimeters and is tangential to the outer vortex line, an intersection point is formed by penetrating through the outer vortex line when the tail end of the extension line is connected with the ending point of the first arc section, a third arc section is formed by taking the intersection point as a circle center and taking the ending point of the first arc section as a starting point, the included angle between the starting point and the ending point of the third arc section is 45 degrees to 100 degrees, a vertical line section is vertically extended from the ending point of the third arc section in the radial direction of the third arc section, a concave fourth arc section is arranged between the ending point of the vertical line section and the outer vortex line, the fourth arc section is tangential to the ending point of the outer vortex line and the vertical line respectively, the radius of the fourth arc section is 0.2 to 3.0 millimeters, and the included angle between the starting point and the end point of the fourth arc section is 35-90 degrees, and the closed contour is formed by smoothly connecting the second arc section, the first arc section, the third arc section, the vertical line section and the fourth arc section.
According to the scheme, the area surrounded by the second circular arc section, the first circular arc section, the third circular arc section, the vertical line section and the fourth circular arc section is a part cut off by the closed contour, the area of the closed contour is regulated by modifying parameters such as an included angle between the starting point and the end point of the first circular arc section, an included angle between the starting point and the end point of the third circular arc section, the length of an extension line, the radius of the first circular arc section and the like, and then the moving quality of the leaf spring is regulated, so that the spring vibrator system of the whole machine is enabled to achieve resonance, and the performance of the whole machine is improved. In addition, the vortex groove is enlarged and cut through the mode, and the rigidity and other mechanical properties of the plate spring are not affected.
Drawings
FIG. 1 is a block diagram of an embodiment of a leaf spring of the present invention.
Fig. 2 is a partial block diagram of an embodiment of the leaf spring of the present invention.
The invention is further described below with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 and 2, the leaf spring includes a base plate, a central hole 1 is formed in the axis of the base plate, a plurality of fixing holes 2 are formed adjacent to the periphery of the base plate, at least two vortex grooves 3 extending in a vortex shape are formed in the base plate, the at least two vortex grooves 3 are uniformly distributed with the central hole 1 as the axis, and a vortex arm 4 is formed at a portion of the base plate located between the adjacent two vortex grooves 3. The radius of the plate spring is 55 to 95 mm, the thickness of the plate spring is 0.3 to 4.0 mm, the radius of the central hole 1 is 2 to 12 mm, the width of the vortex groove 3 in the radial direction is 0.2 to 4.0 mm, the number of the fixing holes 2 is 4 to 12, and the number of the vortex arms 4 is 2 to 8. The radius of the plate spring of the embodiment is 74 mm, the radius of the central hole 1 is 10.5 mm, the radial width of the vortex groove 3 is 1.7 mm, the number of the vortex arms 4 is 4, and the number of the fixing holes 2 is 4.
The vortex groove 3 is provided with an inner vortex line L2, an outer vortex line L1 and a closed contour 5 which is arranged adjacent to the periphery of the base plate in a protruding mode, and the closed contour 5 is formed by smoothly connecting a second arc section EF, a first arc section FA, a third arc section AB, a vertical line section BC and a fourth arc section CD.
The length r1 of the extension line GO2 extending radially with the center O1 of the center hole 1 as the start point and passing through the start point G of the inner vortex line L2 is 5.0 to 30 mm, and preferably the length r1 of the extension line GO2 is 20 mm. The first arc segment FA is formed with the tail end O2 of the extension line GO2 as a center and a radius r2 of 5.0 to 20 mm, and preferably the radius r2 of the first arc segment FA is 12 mm. The angle α between the start point F and the end point a of the first circular arc segment FA is 10 ° to 50 °, preferably 38 °. It can be seen that the arc surface of the first arc segment FA is larger as the radius r2 of the first arc segment FA and the angle α between the start point F and the end point a of the first arc segment FA are larger.
A concave second arc segment EF is arranged between the starting point F of the first arc segment FA and the outer vortex line L1, the radius r3 of the second arc segment EF is 0.2 to 3.0 mm and is arranged tangential to the outer vortex line L1 at E, and at the same time the second arc segment EF is also tangential to the first arc segment FA at point F, preferably the radius r3 of the second arc segment EF is 1.0 mm.
When the tail end O2 of the extension line GO2 is connected with the end point A of the first circular arc segment FA, an intersection point O3 is formed through the outer vortex line L1, a third circular arc segment AB is formed by taking the intersection point O3 as a circle center and taking the end point A of the first circular arc segment FA as a starting point, an included angle beta between the starting point A and the end point B of the third circular arc segment AB is 45-100 degrees, preferably, an included angle beta between the starting point A and the end point B of the third circular arc segment AB is 85 degrees, and the larger the included angle beta between the starting point A and the end point B of the third circular arc segment AB is, the larger the cambered surface of the third circular arc segment AB is.
A perpendicular line segment BC extends perpendicularly to the end point B of the third arc segment AB in the radial direction, a fourth arc segment CD recessed is provided between the end point C of the perpendicular line segment BC and the outer vortex line L1, the fourth arc segment CD is tangential to the outer vortex line L1 and the end point C of the perpendicular line segment BC, the radius r4 of the fourth arc segment CD is 0.2 to 3.0 mm, and preferably the radius r4 of the fourth arc segment CD is 1.5 mm. The angle γ between the start point C and the end point D of the fourth arc segment CD is 35 ° to 90 °, preferably the angle γ between the start point C and the end point D of the fourth arc segment CD is 57 °. It can be seen that the larger the angle γ between the start point C and the end point D of the fourth arc segment CD and the radius r4 of the fourth arc segment CD, the larger the arc surface of the fourth arc segment CD.
The area surrounded by the second arc section EF, the first arc section FA, the third arc section AB, the vertical line section BC and the fourth arc section CD is a part cut off by the closed contour 5, the area of the closed contour 5 is regulated by modifying parameters such as an included angle alpha between a starting point F and an ending point A of the first arc section FA, an included angle beta between a starting point A and an ending point B of the third arc section AB, the length r1 of an extension line GO2, the radius r2 of the first arc section FA and the like, and then the motion quality of the leaf spring is regulated, so that the spring vibrator system of the whole machine is resonant, and the performance of the whole machine is improved. In addition, the vortex groove 3 is enlarged and cut in the mode, so that the rigidity and other mechanical properties of the plate spring are not affected.
The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of the present invention, so that all equivalent changes or modifications of the structure, characteristics and principles described in the claims should be included in the scope of the present invention.
Claims (10)
1. The plate spring comprises a base plate, wherein a central hole is formed in the axis of the base plate, and the plate spring is characterized in that:
a plurality of fixing holes are formed adjacent to the periphery of the base plate, at least two vortex grooves extending in a vortex shape are formed in the base plate, the at least two vortex grooves are uniformly distributed by taking the central hole as an axle center, and a vortex arm is formed at a part, located between the two adjacent vortex grooves, of the base plate;
the vortex groove is provided with an inner vortex line, an outer vortex line and a closed contour which is arranged adjacent to the periphery of the base plate in a protruding mode, and the length of an extension line which takes the center hole circle center as a starting point and radially extends through the starting point of the inner vortex line is 5.0-30 mm;
forming a first circular arc section by taking the tail end of the extension line as the center of a circle and the radius of the first circular arc section is 5.0-20 mm, wherein an included angle between the starting point and the end point of the first circular arc section is 10-50 degrees, a second circular arc section which is concave is arranged between the starting point of the first circular arc section and the outer vortex line, and the radius of the second circular arc section is 0.2-3.0 mm and is tangential to the outer vortex line;
when the tail end of the extension line is connected with the end point of the first circular arc section, an intersection point is formed through the outer vortex line, a third circular arc section is formed by taking the intersection point as a circle center and taking the end point of the first circular arc section as a starting point, and an included angle between the starting point and the end point of the third circular arc section is 45-100 degrees;
a vertical line segment extends vertically to the end point of the third arc segment in the radial direction, a concave fourth arc segment is arranged between the end point of the vertical line segment and the outer vortex line, the fourth arc segment is tangent to the outer vortex line and the end point of the vertical line segment respectively, the radius of the fourth arc segment is 0.2-3.0 mm, and an included angle between the start point and the end point of the fourth arc segment is 35-90 degrees;
the closed contour is formed by smoothly connecting the second circular arc section, the first circular arc section, the third circular arc section, the vertical line section and the fourth circular arc section.
2. The leaf spring of claim 1 wherein:
the length of the extension line is 20 mm.
3. The leaf spring of claim 1 wherein:
the radius of the first circular arc section is 12 mm.
4. A leaf spring according to claim 3, wherein:
the included angle between the starting point and the end point of the first circular arc section is 38 degrees.
5. The leaf spring of claim 1 wherein:
the radius of the second circular arc section is 1.0 millimeter.
6. The leaf spring of claim 1 wherein:
the included angle between the starting point and the end point of the third circular arc section is 85 degrees.
7. The leaf spring of claim 1 wherein:
the included angle between the starting point and the end point of the fourth circular arc section is 57 degrees.
8. The leaf spring of claim 7 wherein:
the radius of the fourth arc section is 1.5 mm.
9. A leaf spring set comprising a plurality of leaf springs according to any one of claims 1 to 8, wherein a spacer is provided between adjacent two of said leaf springs.
10. A compressor comprising the leaf spring set of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458835.1A CN108194548B (en) | 2017-12-28 | 2017-12-28 | Plate spring, plate spring set and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711458835.1A CN108194548B (en) | 2017-12-28 | 2017-12-28 | Plate spring, plate spring set and compressor |
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| Publication Number | Publication Date |
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| CN108194548A CN108194548A (en) | 2018-06-22 |
| CN108194548B true CN108194548B (en) | 2023-12-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711458835.1A Active CN108194548B (en) | 2017-12-28 | 2017-12-28 | Plate spring, plate spring set and compressor |
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| CN (1) | CN108194548B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439945B (en) * | 2019-08-15 | 2021-04-06 | 辽宁工程技术大学 | Assembled linear plate spring for refrigeration compressor |
| CN111043234A (en) * | 2019-11-18 | 2020-04-21 | 上海厚酷科技有限公司 | Vibration absorber |
| CN111043214A (en) * | 2019-11-18 | 2020-04-21 | 上海厚酷科技有限公司 | Shock absorption system of refrigerating machine |
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| GB2474417A (en) * | 2009-07-03 | 2011-04-20 | Isis Innovation | A spring and a spring assembly |
| CN104514828B (en) * | 2013-09-30 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Flat spring and plate spring groups and compressor |
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| KR20020009877A (en) * | 2000-07-27 | 2002-02-02 | 구자홍 | Apparatus for protecting fretting corrosion of plate spring |
| JP2008115918A (en) * | 2006-11-02 | 2008-05-22 | Sharp Corp | Flat spring and stirling engine |
| KR20100135138A (en) * | 2009-06-16 | 2010-12-24 | 유성정밀 주식회사 | Plate spring |
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| CN207687238U (en) * | 2017-12-28 | 2018-08-03 | 陕西仙童科技有限公司 | Flat spring, plate spring groups and compressor |
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| Publication number | Publication date |
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| CN108194548A (en) | 2018-06-22 |
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