CN211574120U

CN211574120U - Power piston plate spring

Info

Publication number: CN211574120U
Application number: CN201921991737.9U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Houku Technology Co ltd
Current assignee: Shanghai Houku Technology Co ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-09-25
Anticipated expiration: 2029-11-18

Abstract

The utility model discloses a power piston leaf spring is equipped with the spiral arm, and the quantity of spiral arm is four, and four spiral arm circumference distribute, and the inside and outside curve of each spiral arm is Archimedes helix, the both ends smooth transition of helix, and the helix is equipped with the incision before the beginning stage and ending, and power piston leaf spring still is equipped with the fixed orifices, and the fixed orifices is located power piston leaf spring centre of a circle department, and through above-mentioned design, power piston leaf spring is not fragile, long service life.

Description

Power piston plate spring

Technical Field

The utility model relates to a refrigerator especially relates to a power piston leaf spring.

Background

The Stirling refrigerator refrigerates by a cycle of cooling, compressing, absorbing heat and expanding working medium (hydrogen or helium) in a cylinder. The power piston is an important component of the Stirling refrigerator, and the Stirling refrigerator organizes the flow of working media in a closed circulation system by means of the movement of the power piston.

The power piston plate spring provides proper axial rigidity and radial rigidity for the reciprocating motion of the power piston, and stores and releases potential energy of the power piston in a circulating manner, but the existing power piston plate spring is easy to damage and has short service life.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a power piston plate spring which is not easy to damage and has long service life.

The utility model provides a power piston leaf spring, is equipped with the spiral arm, the quantity of spiral arm is four, four spiral arm circumference distributes, each the inside and outside curve of spiral arm is Archimedes helix, the both ends smooth transition of helix, the helix is equipped with the incision before the beginning stage and ending, and power piston leaf spring still is equipped with the fixed orifices, the fixed orifices is located power piston leaf spring centre of a circle department.

Further, the power piston leaf spring also includes a beveled edge located at an edge of the power piston leaf spring.

Further, the included angle between the oblique edge and the perpendicular bisector is 45 degrees.

Further, the distance between the inclined edge and the circle center of the power piston plate spring is 32 mm.

Further, the smooth transition adopts circular arc transition.

Further, the diameter of the circular arc is 3.6 mm.

Further, the edge of the power piston plate spring is provided with a through hole for fixing the power piston plate spring on the machine body.

Furthermore, the included angle between the connecting line from the center of the through hole to the center of the power piston plate spring and the connecting line from the nearest transition circular arc center to the center of the power piston plate spring is 10 degrees.

Furthermore, the number of the through holes is multiple, and the through holes are uniformly distributed on the edge of the power piston plate spring and are positioned on a circle.

Further, the diameter of the through-hole was 2.7 mm.

Compared with the prior art, the utility model discloses power piston leaf spring is equipped with the spiral arm, and the quantity of spiral arm is four, and four spiral arms are to distributing, and the inside and outside curve of each spiral arm is Archimedes helix, the both ends smooth transition of helix, and the helix is equipped with the incision before the beginning stage and ending, and power piston leaf spring still is equipped with the fixed orifices, and the fixed orifices is located power piston leaf spring centre of a circle department, and through above-mentioned design, power piston leaf spring is not fragile, long service life.

Drawings

Fig. 1 is a plan view of the power piston plate spring of the present invention.

In the figure: 50. a power piston leaf spring; 51. a spiral arm; 510. a transition arc; 511. cutting; 52. a fixing hole; 53. a beveled edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present, secured by intervening elements. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the thickness of a power piston plate spring 50 of the present invention is 1.2mm, and the hardness thereof is 50-55 HRC.

The power piston leaf spring 50 is provided with four spiral arms 51, the four spiral arms 51 being circumferentially distributed. The inner and outer curves of each spiral arm 51 are Archimedes spiral lines, and the two ends of the spiral lines are in smooth transition so as to reduce the local stress concentration phenomenon of the power piston plate spring 50. In this embodiment, a circular arc transition is employed. Transition arc 510 is 3.6mm in diameter. The helix is provided with cuts 511 at the beginning and before the ending to relieve stress. The circle center of the power piston plate spring 50 is provided with a fixing hole 52, and the diameter of the fixing hole 52 is 10.8 mm. The edge of the power piston plate spring 50 is provided with a through hole for fixing the power piston plate spring 50 to the machine body. The diameter of the through hole is 2.7 mm. The number of the through holes is four, and the four through holes are uniformly distributed on the edge of the power piston plate spring 50 and are positioned on a circle with the diameter of 70 mm. The included angle between the connecting line from the center of the through hole to the center of the power piston plate spring 50 and the connecting line from the nearest transition circular arc 510 to the center of the power piston plate spring 50 is 10 degrees. The edge of the power piston plate spring 50 is provided with a bevel edge 53, and the included angle between the bevel edge 53 and the vertical line is 45 degrees. The distance from the centre of the circle of the bevel 53 is 32 mm. The power piston leaf spring 50 is secured to the mounting hole of the outer sleeve by fasteners.

The power piston plate spring 50 is fixed on the machine body through a through hole, provides proper axial rigidity and radial rigidity for the reciprocating motion of the power piston, and stores and releases the potential energy of the power piston plate spring 50 in a circulating mode.

Various other modifications and changes may be made by those skilled in the art based on the above-described technical solutions and concepts, and all such modifications and changes are intended to fall within the scope of the claims.

Claims

1. A power piston leaf spring is equipped with spiral arm, its characterized in that: the quantity of spiral arm is four, four spiral arm circumference distributes, each the inside and outside curve of spiral arm is Archimedes helix, the both ends smooth transition of helix, and the helix is equipped with the incision before the beginning stage and ending, and power piston leaf spring still is equipped with the fixed orifices, the fixed orifices is located power piston leaf spring centre of a circle department.

2. The power piston leaf spring of claim 1 wherein: the power piston leaf spring also includes a beveled edge located at the edge of the power piston leaf spring.

3. The power piston leaf spring of claim 2 wherein: the included angle between the inclined edge and the perpendicular bisector is 45 degrees.

4. The power piston leaf spring of claim 2 wherein: the distance between the bevel edge and the circle center of the power piston plate spring is 32 mm.

5. The power piston leaf spring of claim 1 wherein: the smooth transition adopts circular arc transition.

6. The power piston leaf spring of claim 5, wherein: the diameter of the circular arc is 3.6 mm.

7. The power piston leaf spring of claim 5, wherein: the edge of the power piston plate spring is provided with a through hole for fixing the power piston plate spring on the machine body.

8. The power piston leaf spring of claim 7 wherein: and the included angle between the connecting line from the center of the through hole to the center of the power piston plate spring and the connecting line from the nearest transition circular arc center to the center of the power piston plate spring is 10 degrees.

9. The power piston leaf spring of claim 7 wherein: the number of through-holes is a plurality of, and a plurality of through-holes evenly distributed is at power piston leaf spring edge and is located the circle.

10. The power piston leaf spring of claim 7 wherein: the diameter of the through hole is 2.7 mm.