阅读说明：本技术 一种连接簧片及片弹簧 (Connecting reed and leaf spring ) 是由 朱绍伟 于 2020-05-14 设计创作，主要内容包括：本发明涉及一种连接簧片及片弹簧。具体地,连接簧片在使用时,至少两个成组围绕一中心周向布置,相邻的两个有部分在径向内外交错；连接簧片包括直线段及弧形段；直线段和弧形段圆弧过渡连接,直线段的背离弧形段的一端具有第一固定连接段,弧形段的背离直线段的一端具有第二固定连接段；直线段和弧形段之间具有夹角而使连接簧片整体呈弯形臂,使用时,直线段处于相邻连接簧片的弧形段内侧。本发明的这种连接簧片在使用时,连接簧片能够更充分的利用空间,径向刚度较大且具有更好的轴向可弹性变形性能,能够大大延长脉管制冷机的使用寿命。(The invention relates to a connecting reed and a leaf spring. Specifically, when the connecting reed is used, at least two connecting reeds are arranged in a group circumferentially around a center, and two adjacent parts are staggered inside and outside in the radial direction; the connecting spring piece comprises a straight line section and an arc section; the straight line section and the arc section are in arc transition connection, one end of the straight line section, which is far away from the arc section, is provided with a first fixed connecting section, and one end of the arc section, which is far away from the straight line section, is provided with a second fixed connecting section; an included angle is formed between the straight line section and the arc section, so that the whole connecting reed is a bent arm, and when the connecting reed is used, the straight line section is positioned at the inner side of the arc section of the adjacent connecting reed. When the connecting reed is used, the connecting reed can fully utilize space, has higher radial rigidity and better axial elastic deformation performance, and can greatly prolong the service life of the pulse tube refrigerator.)

1. A connecting spring, when in use, at least two are arranged in groups circumferentially around a center, and two adjacent parts are staggered inside and outside in the radial direction;

the method is characterized by comprising the following steps:

straight sections, and arcuate sections;

the straight line section and the arc section are in arc transition connection, one end of the straight line section, which is far away from the arc section, is provided with a first fixed connecting section, and one end of the arc section, which is far away from the straight line section, is provided with a second fixed connecting section;

an included angle is formed between the straight line section and the arc section, so that the whole connecting reed is a bent arm, and when the connecting reed is used, the straight line section is positioned at the inner side of the arc section of the adjacent connecting reed.

2. A connection reed according to claim 1, wherein the outer contour of the second permanent connection segment is on the same arc as the outer contour of the arc segment.

3. The attachment reed of claim 1, wherein the first and second anchor attachment segments have a width greater than the width of the straight segment and the arcuate segment.

4. A connection reed according to claim 1, wherein the inner side of the second fixed attachment section matches the outer contour of the straight section, and in use, the second fixed attachment section extends along the outer side of the straight section of the adjacent connection reed.

5. A connector reed according to claim 1, 2, 3 or 4, wherein the outer side of the first anchor connector segment matches the inner contour of the arcuate segment, and wherein in use the first anchor connector segment extends along the arcuate segment of an adjacent connector reed.

6. A connection reed according to claim 1, 2, 3 or 4, wherein the end profile of the second fixedly connected section is a diagonal.

7. A connection reed according to claim 1, 2, 3 or 4, wherein the outer contour of the second permanent connection segment is a minor arc and is connected at its end facing away from the arc segment with a rounded transition to the inner contour.

8. A leaf spring, comprising:

at least two connecting reeds are relatively fixed in a specific position relationship to form a group of connecting reeds;

characterized in that the connection reed is the connection reed according to any one of claims 1 to 7.

9. The flat spring as claimed in claim 8, wherein the first fixed coupling sections of the grouped connection spring pieces are integrally connected by a coupling ring, and the first fixed coupling sections are provided with coupling holes for coupling with the mover or inner holes of the coupling ring for coupling with the mover.

10. A leaf spring according to claim 8 or 9, further comprising an outer connecting ring enclosing the set of connection leaves inside, and wherein the second fixed connection segments of the set of connection leaves are integrally connected with the outer connecting ring.

Technical Field

The invention relates to the related fields of compressors and reciprocating linear motion mechanisms, in particular to a connecting reed and a leaf spring.

Background

In order to prolong the service life of the compressor piston of a pulse tube refrigerator or other types of refrigerators, or the service life of other moving parts such as a sliding piston, the prior art adopts a mode of supporting a piston by a flat spring so as to suspend the piston, thereby keeping a tiny gap between the piston and a cylinder. The clearance is called as clearance seal, the clearance seal enables the cylinder and the piston not to be contacted, the friction between the cylinder and the piston is eliminated, the relative seal between the cylinder and the piston is realized, finally, the normal work of the equipment is ensured under the use state without lubricating oil, and the piston has longer service life.

For example, the compressors disclosed in two Chinese patent inventions, which are the grant publication No. CN105179540B, the invention name of which is a sector spring arm and a leaf spring composed of the sector spring arm and a compressor adopting the leaf spring, and the grant publication No. CN105134553B, the invention name of which is a linear spring arm and a leaf spring composed of the linear spring arm and a compressor adopting the leaf spring, are all in a suspension state of a piston through connecting the leaf spring between a rotor and a stator through a radial supporting function of the leaf spring, and simultaneously, the reciprocating motion of the piston is satisfied through the characteristic that the leaf spring is deformable in the axial direction. However, in the two leaf springs disclosed in the above two patents, the connecting spring leaf of the former is transited between the two segment of the fan-shaped arm through an arc, the shape of the whole profile line is complicated, and the manufacturing is difficult; the connecting reed of the latter is in circular arc transition between two straight line sections, although the shape of the molded line is simpler, the overall shape of the leaf spring is more similar to a triangle, and the cutting amount of the connecting reed during manufacturing is larger, so that not only is metal wasted, but also the space utilization rate is lower in an area limited by a stator, so that the rigidity of the connecting reed in the radial direction and the deformation degree of the connecting reed in the axial direction are influenced to a certain extent, and the performance is reduced during use.

Disclosure of Invention

The invention aims to provide a connecting reed which is simple to manufacture, high in utilization rate and excellent in performance; meanwhile, the invention also provides the flat spring which is simple to manufacture, high in utilization rate and excellent in performance.

The technical scheme of the connecting reed of the invention is as follows:

the connecting reeds are arranged in groups around a center in a circumferential direction when in use, and two adjacent parts are staggered inside and outside in the radial direction;

the connection reed includes:

straight sections, and arcuate sections;

the straight line section and the arc section are in arc transition connection, one end of the straight line section, which is far away from the arc section, is provided with a first fixed connecting section, and one end of the arc section, which is far away from the straight line section, is provided with a second fixed connecting section;

an included angle is formed between the straight line section and the arc section, so that the whole connecting reed is a bent arm, and when the connecting reed is used, the straight line section is positioned at the inner side of the arc section of the adjacent connecting reed.

When the connecting reed is used, the inner side of the arc-shaped section is connected with the straight line section, the straight line section better improves the radial support rigidity, and the straight line section and the arc-shaped section are in transition connection, so that the stress concentration is reduced, the radial rigidity of the connecting reed can be improved, and the sheet spring formed by the connecting reed is excellent in service performance on the whole. Moreover, the structure of the connecting reed is relatively simple, and the manufacture is relatively convenient.

Furthermore, the outer contour of the second fixed connection section and the outer contour of the arc-shaped section are on the same arc. Therefore, the outer contour of the arc-shaped section and the outer contour of the second fixed connection section are integrally formed into a shape matched with the inner hole of the cylinder, the connecting reed more fully utilizes the space limited by the stator, the connecting reed has larger sheet body area, and the radial support rigidity is better.

Further, the widths of the first and second fixed connecting sections are larger than the widths of the straight section and the arc section.

Therefore, the fixed connection part has stronger structural property, and the reliability of the connection position is ensured.

Furthermore, the inner side surface of the second fixed connection section is matched with the outer contour of the straight line section in a matched mode, and when the spring leaf connector is used, the second fixed connection section extends along the outer side surface of the straight line section of the adjacent connection spring leaf.

The design makes full use of the space limited by the stator, improves the available space of the metal reed and can also improve the radial rigidity of the connecting reed to a certain extent.

In addition, on the basis of any one of the above technical solutions of the connection spring, the following different optimization improvements can be made:

for example: the outer side surface of the first fixed connecting section is matched with the inner contour of the arc-shaped section in a matching mode, and when the first fixed connecting section is used, the first fixed connecting section extends along the arc-shaped section of the adjacent connecting reed in a bending mode. The overall structure of the leaf spring surrounded by the connecting reeds between the stator and the rotor is compact due to the structural design, the space utilization rate is high, and the radial rigidity of the first fixed connection section of the connecting reeds is improved to a certain extent.

For another example: the end contour of the second fixed connecting section is oblique. Therefore, on the premise of not influencing the supporting rigidity of the connecting spring plate, redundant sheet bodies are cut off.

Alternatively, the outer contour of the second fixed connection section is a minor arc and is connected with the inner contour round angle at the end part deviating from the arc section. According to the structural design, when the plurality of connecting reeds form the leaf spring, a relatively complete ring is integrally formed, the annular space enclosed by the stator and the rotor is utilized to the greatest extent, the space utilization rate is improved to the greatest extent, and the integral rigidity is maximized for the leaf spring.

The technical scheme of the leaf spring of the invention is as follows:

the leaf spring includes:

the group of the connecting reeds is formed by at least two connecting reeds;

at least two of the connecting reeds are arranged around a center in the circumferential direction, and parts of the two adjacent connecting reeds are staggered inside and outside in the radial direction;

the connection reed includes:

straight sections, and arcuate sections;

the straight line section and the arc section are in arc transition connection, one end of the straight line section, which is far away from the arc section, is provided with a first fixed connecting section, and one end of the arc section, which is far away from the straight line section, is provided with a second fixed connecting section;

an included angle is formed between the straight line section and the arc section, so that the whole connecting reed is a bent arm, and when the connecting reed is used, the straight line section is positioned at the inner side of the arc section of the adjacent connecting reed.

When the leaf spring is used, the inner side of the arc-shaped section is connected with the straight line section, the straight line section better improves the radial support rigidity, and the straight line section is in transition connection with the arc of the arc-shaped section, so that the stress concentration is reduced, the radial rigidity of the connecting spring leaf can be improved, and the leaf spring formed by the connecting spring leaf is excellent in service performance on the whole. Moreover, the structure of the connecting reed is relatively simple, and the manufacture is relatively convenient.

Furthermore, the outer contour of the second fixed connection section and the outer contour of the arc-shaped section are on the same arc. Therefore, the outer contour of the arc-shaped section and the outer contour of the second fixed connection section are integrally formed into a shape matched with the inner hole of the cylinder, the connecting reed more fully utilizes the space limited by the stator, the connecting reed has larger sheet body area, and the radial support rigidity is better.

Further, the widths of the first and second fixed connecting sections are larger than the widths of the straight section and the arc section.

Therefore, the fixed connection part has stronger structural property, and the reliability of the connection position is ensured.

Furthermore, the inner side surface of the second fixed connection section is matched with the outer contour of the straight line section in a matched mode, and when the spring leaf connector is used, the second fixed connection section extends along the outer side surface of the straight line section of the adjacent connection spring leaf.

The design makes full use of the space limited by the stator, improves the available space of the metal reed and can also improve the radial rigidity of the connecting reed to a certain extent.

On the basis of any one of the above technical schemes of the multi-leaf spring, the following different optimization improvements can be made:

for example: the outer side surface of the first fixed connecting section is matched with the inner contour of the arc-shaped section in a matching mode, and when the first fixed connecting section is used, the first fixed connecting section extends along the arc-shaped section of the adjacent connecting reed in a bending mode. The overall structure of the leaf spring surrounded by the connecting reeds between the stator and the rotor is compact due to the structural design, the space utilization rate is high, and the radial rigidity of the first fixed connection section of the connecting reeds is improved to a certain extent.

For another example: the end contour of the second fixed connecting section is oblique. Therefore, on the premise of not influencing the supporting rigidity of the connecting spring plate, redundant sheet bodies are cut off.

Alternatively, the outer contour of the second fixed connection section is a minor arc and is connected with the inner contour round angle at the end part deviating from the arc section. According to the structural design, when the plurality of connecting reeds form the leaf spring, a relatively complete ring is integrally formed, the annular space enclosed by the stator and the rotor is utilized to the greatest extent, the space utilization rate is improved to the greatest extent, and the integral rigidity is maximized for the leaf spring.

In addition, the following optimized scheme can be provided:

for example, the first fixed connection sections of the group of connection reeds are integrally connected through a connection ring, and the first fixed connection sections are provided with connection holes for connecting with the mover, or inner holes of the connection ring are used for connecting with the mover. Therefore, the leaf spring is integrally formed into an integral structure, the number of parts is reduced, and the transportation and the assembly are convenient; the first fixed connecting section is connected into a whole, and the radial rigidity of the leaf spring is further improved.

Similarly, the leaf spring further comprises an outer connecting ring enclosing the set of connection reeds inside, and the second fixed connection segments of the set of connection reeds are integrally connected with the outer connecting ring. The outer periphery of the leaf spring is connected into a whole through the structural design, the radial rigidity is improved, the outer connecting ring and the air cylinder have larger matching size, and the axial deformability is better. In addition, especially the first fixed connection sections of the grouped connection reeds are integrally connected through the connecting rings, the inner part and the outer part of the leaf spring in the radial direction are integrally connected, the radial rigidity is higher, and the elastic supporting effect on the rotor and the stator is better when the spring support device is used.

Drawings

FIG. 1 is a schematic diagram of a pulse tube refrigerator incorporating a flat spring of the present invention;

FIG. 2 is a schematic view of the movement of the compressor of FIG. 1;

FIG. 3 is a schematic illustration of the pusher piston assembly of FIG. 1;

FIG. 4 is a schematic structural view of a leaf spring assembly constructed in use of the leaf spring of the present invention;

FIG. 5 is a schematic view of the leaf spring of the present invention shown in FIG. 4;

FIG. 6 is a schematic diagram showing the difference between before and after blanking of the leaf spring shown in FIG. 5;

FIG. 7 is a schematic structural view of an outer spacer plate of the leaf spring assembly shown in FIG. 4;

FIG. 8 is a schematic view of the construction of an inner spacer plate in the leaf spring assembly of FIG. 4;

FIG. 9 is a schematic structural view of an outer platen of the leaf spring assembly shown in FIG. 4;

FIG. 10 is a schematic view of the construction of the inner platen of the leaf spring assembly of FIG. 4;

FIG. 11 is a schematic structural diagram of a second embodiment of a leaf spring according to the present invention;

FIG. 12 is a schematic structural view of a third embodiment of a leaf spring according to the present invention;

FIG. 13 is a schematic structural view of a fourth embodiment of a leaf spring according to the present invention;

fig. 14 is a schematic structural diagram of a fifth embodiment of a flat spring according to the present invention.

In the figure: 1-connecting a reed; 111-arc segment; 112-straight line segment; 113-a transition section; 114-a first fixed connection section; 115-a second fixed connection section; 1110-arc segment inner contour surface; 1111-an outer contour surface of an arc-shaped section; 1121-straight segment outer profile surface; 1140-a first outer contour surface; 1141-a first inner contour surface; 1150-a second inner contour surface; 1151-a second outer contour surface; 1152-diagonal segments; 120-connecting hole; 130-inner connecting ring; 140-outer connecting ring; 2-a leaf spring assembly; 20-an outer separator; 21-perforating the outer partition plate; 30-an inner partition plate; 31-inner partition plate perforation; 40-outer pressing plate; 41-perforating an outer pressing plate; 50-an inner pressure plate; 51-inner platen perforation; 6-pushing piston assembly; 60-pushing the piston cylinder cover; 61-pushing piston cylinder; 62-pushing the piston support; 63-pushing piston; 711-a radiator; 712-a regenerator; 713-cold heat exchanger; 714-vessels; 715-gas homogenizer; 8-a compressor; 80-an outer stator; 81-an inner stator; 82-a compression piston; 83-coil; 84-a magnet; 85-compression cylinder; 9-raw material plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The features and properties of the present invention are described in further detail below with reference to examples.

Examples of leaf springs of the invention:

in view of one of the main applications of the flat spring of the present invention, the flat spring is used in a mechanism including a linear reciprocating motion, such as a pulse tube refrigerator, and the linear reciprocating motion mechanism is, for example, a compressor core and a pushing piston assembly in the pulse tube refrigerator. The leaf spring in the linear reciprocating mechanism has the function of radially supporting the mover which linearly reciprocates relative to the stator, so that a small gap is generated between the stator and the mover to realize air film sealing instead of oil sealing. For better explanation and description of the flat spring of the present invention, the following description is provided in connection with the use of the flat spring in a pulse tube refrigerator, and of course, such an example is not intended to limit the flat spring of the present invention to be used only in a pulse tube refrigerator.

As shown in fig. 1, the pulse tube refrigerator comprises a compressor 8, a pushing piston assembly 6 and a cold head. Wherein, the left outlet of the pushing piston assembly 6 is connected with the gas outlet of the compression cavity of the compressor core, and the compressor 8 and the pushing piston assembly 6 are connected with the cold head through a pipeline. The cold head consists of a radiator 711, a heat regenerator 712, a cold heat exchanger 713, a pulse tube 714 and a gas homogenizer 715.

The structure of the core of the compressor 8 is shown in fig. 2, and includes an outer stator 80, an inner stator 81, a coil 83, a magnet 84, a compression cylinder 85 and a compression piston 82, the compression cylinder 85 and the compression piston 82 enclose a compression cavity, and a compression cavity gas outlet is arranged in the middle of the compression piston 82. The outer stator 80, the coil 83 and the compression piston 82 form a stator, the magnet 84, the inner stator 81 and the compression cylinder 85 form a rotor, and the rotor and the stator are supported and connected through the right and left leaf spring assemblies 2, so that a small gap is formed between the compression cylinder 85 and the compression piston 82 and is not in contact with the compression cylinder, and the small gap is the gap sealing of the compressor.

The pushing piston assembly 6 is composed of a pushing piston cylinder 61, a pushing piston cylinder cover 60, a pushing piston support 62, a pushing piston 63 and a leaf spring assembly 2, as shown in fig. 3. The leaf spring unit 2 supports the pushing piston 63 in the pushing piston cylinder 61 to form a pushing piston gap seal, and in the pushing piston unit, the pushing piston cylinder 61 and the pushing piston support 62 constitute a stator, and the pushing piston 63 constitutes a mover. The gap seal separates the left chamber and the right chamber of the pushing piston, and the left outlet of the pushing piston on the cylinder cover 60 of the pushing piston is communicated with the right outlet of the pushing piston on the cylinder 61 of the pushing piston.

The structure of the flat spring assembly 2 is shown in fig. 4, the flat spring assembly comprises a plurality of axially stacked flat springs, and the plurality of flat springs are connected through bolts. The leaf spring is shown in fig. 5-6 and comprises three connecting reeds 1, the three connecting reeds 1 are uniformly arranged in groups around a center in the circumferential direction, and parts of two adjacent connecting reeds 1 are staggered inside and outside in the radial direction. The single attachment leaf includes an integrally formed arcuate segment 111, a straight segment 112, and a transition segment 113 connecting arcuate segment 111 and straight segment 112. The transition section 113 is arc-shaped, so that the arc-shaped section 111 is in arc-shaped transition connection with the straight section 112, and stress concentration is avoided. An included angle is formed between the straight line section 112 and the arc section 111, so that the whole connecting reed is a bent arm, and when three connecting reeds form a laminated spring, the straight line section 112 of one connecting reed 1 is positioned on the inner side of the arc section 111 of the adjacent connecting reed 1 in two adjacent connecting reeds 1. Of course, it should be noted that the straight line segments and the arc segments described above are not meant to be strictly straight lines or arcs, but are meant to include straight lines or arcs and shapes approximating the straight lines or arcs.

In addition, one end of the straight line section 112, which is far away from the arc-shaped section 111, is provided with a first fixed connection section 114, one end of the arc-shaped section 111, which is far away from the straight line section 112, is provided with a second fixed connection section 115, the first fixed connection section is provided with a connection hole 120 for being fixedly connected with the rotor, and the second fixed connection section is also provided with a connection hole 120 for being fixedly connected with the stator, so that the leaf spring plays a role in radially supporting between the rotor and the stator. In order to improve the connection strength of the stator or the rotor of the fixed connection section, the present embodiment is designed optimally, that is, the widths of the first and second fixed connection sections are greater than the widths of the straight section and the arc section. Of course, in other embodiments of the flat spring, the widths of the first and second fixed connection sections may be completely equal to the widths of the straight section and the arc section, or in other embodiments of the flat spring, the widths of the first and second fixed connection sections may be smaller than the widths of the straight section and the arc section according to the actual use requirement.

When a plurality of leaf springs are arranged in a stacked manner and connected with a mover and a stator, as shown in fig. 4 and 7-10, an inner spacer 30 is padded between first fixed connection sections 114 of two axially adjacent connection reeds, an outer spacer 20 is padded between second fixed connection sections 115, an inner pressing plate 50 is further padded at the first fixed connection section 114 of the axially outermost connection reed, an outer pressing plate 40 is further padded at the second fixed connection section 115 of the axially outermost connection reed, correspondingly, outer spacer through holes 21 and outer pressing plate through holes 41 are respectively arranged on the outer spacer 20 and the outer pressing plate 40 corresponding to connection holes 120 on the connection reeds, inner spacer through holes 31 and inner pressing plate through holes 51 are respectively arranged on the inner spacer 30 and the inner pressing plate 50 corresponding to connection holes 120 on the connection reeds, so that connection bolts sequentially penetrate through the corresponding holes and are connected with the stator or the stator.

Specifically, in order to reasonably and fully utilize the annular space enclosed between the mover and the stator, the shape enclosed by the three connection reeds is approximately circular, the first fixed connection section 114 is bent in a shape matched with the arc-shaped section 111, the first outer contour surface 1140 of the first fixed connection section is matched with the inner contour surface 1110 of the arc-shaped section, the first inner contour surfaces 1141 of the three first fixed connection sections 114 are located on the same circumference, and of course, the first outer contour surface 1140 of the first fixed connection section 114 is matched with the inner contour surface of the transition section 113 at the end of the first fixed connection section 114 and extends to the inner side of the straight-line section 112. The second inner contour surface 1150 of the second fixed connection segment 115 extends linearly and is matched with the straight-line-segment outer contour surface 1121 of the straight-line segment 112, the second outer contour surface 1151 of the second fixed connection segment 115 and the arc-segment outer contour surface 1111 of the arc-shaped segment 111 are located on the same circumference, and the arc-segment outer contour surfaces 1111 of the three connection springs 1 are also located on the same circumference. In this embodiment, according to the arrangement of the fixed connection holes provided on the stator, the end surface of the second fixed connection section 115 facing away from the arc-shaped section is provided at a position immediately adjacent to the connection hole thereon as a diagonal section 1152 extending in a diagonal line.

When the connecting spring leaf is processed, the connecting spring leaf can be directly punched on the annular raw material plate 9 shown in fig. 6, so that a lot of raw materials do not need to be punched, the waste of the raw materials is reduced, and the production cost is saved to a certain extent.

In addition, the leaf spring formed by the connecting reeds makes full use of metal, the overall profile curve is smooth, the bending degree of the part of the connecting reeds playing a supporting role in the radial direction is kept relatively low, the radial rigidity is ensured, and the radial supporting effect is improved; the connection reed has a large overall area, and can optimize the performance of elastic deformation in the axial direction. The service life of the compressor is prolonged as a whole.

Of course, the leaf spring of the present invention is not limited to the above-described embodiment.

The invention also provides other embodiments of the leaf spring in different forms.

For example, in the second embodiment of the leaf spring, as shown in fig. 11, the structure of the leaf spring is different from that of the first embodiment of the leaf spring, that is, three connection spring leaves as main components constituting the leaf spring are integrally connected at the first fixing connection section by an inner connection ring 130, that is, when the leaf spring is punched, the leaf spring is directly punched as a single piece, and the first fixing connection section 114 is also provided with a connection hole 120 for connecting with the mover. The leaf spring is integrally of an integral structure, so that the number of parts is reduced, and the transportation and the assembly are convenient; the first fixed connection section 114 is connected into a whole, and the radial rigidity of the leaf spring is further improved.

In a similar manner, the third embodiment of the flat spring shown in fig. 12 includes a flat spring whose second fixed connection segment 115 is integrally connected by an outer connection ring 140, in addition to the first fixed connection segments of the three connection reeds being integrally connected by an inner connection ring 130. The inner part and the outer part of the leaf spring in the radial direction are integrally connected, the radial rigidity is higher, and the elastic supporting effect on the rotor and the stator is better when the leaf spring is used. Of course, another variant of the leaf spring is also easily conceivable, in which the second fastening sections of the three connection leaves are connected integrally by an outer connecting ring, while the first fastening sections are still independent of one another.

In a relatively similar modification, as shown in fig. 13, in the leaf spring included in the fourth embodiment of the leaf spring, three connection spring pieces as main components of the leaf spring are integrally connected to each other through the inner connection ring 130 at the first fixed connection section, that is, when the leaf spring is punched, the leaf spring as a single piece is directly punched, and the inner hole is directly used as a connection hole fixedly connected to the mover, and at this time, there is no need to provide a connection hole in the first fixed connection section, and the first fixed connection section is indirectly fixedly connected to the mover through the inner connection ring 130. The overall area of the leaf spring with the structure is larger, the axial elastic deformation performance is improved in addition to the better radial supporting effect, and the service life is longer.

Or for example, as shown in fig. 14, the leaf spring of the fifth embodiment is different from the first embodiment, and as is obvious from the figure, according to the position of the connection reed and the corresponding connection hole on the stator, the second fixed connection section is overall in the shape of an arch, the outer contour of the second fixed connection section is a minor arc, the minor arc is located on the same circumference as the outer contour surface of the arc section, and the end of the second fixed connection section away from the arc section is in transition connection with the inner contour fillet of the second fixed connection section. According to the structural design, when the plurality of connecting reeds form the leaf spring, a relatively complete ring is integrally formed, the annular space enclosed by the stator and the rotor is utilized to the greatest extent, the space utilization rate is improved to the greatest extent, and the integral rigidity is maximized for the leaf spring.

There are also different embodiments of more leaf springs, for example, there may be two or four connecting leaves constituting one leaf spring, and when there are four connecting leaves, the structure and arrangement form are similar to the arrangement form of three connecting leaves in the embodiments, and all the connecting leaves are in the form of bent arms, and the straight line segment is positioned at the inner side of the arc segment of two adjacent leaf springs. In this way, the connection positions among the leaf springs, the stator and the rotor are more, and the connection strength is stronger; the widths of the first fixed connecting section and the second fixed connecting section can be equal to the widths of the straight-line section and the arc-shaped section, and at the moment, the inner side face of the second fixed connecting section and the outer contour of the straight-line section do not have a corresponding relation matched in a matched mode. When there are two connecting reeds, the arrangement mode can be uniformly distributed around the same center, and the included angle between the arc-shaped section and the straight line section of the bent arm-shaped connecting reed is larger than that of the connecting reed in the first embodiment, or the arrangement mode can be uneven, for example, one of three connecting reeds directly included in the leaf spring in the first embodiment is omitted.

Furthermore, on the basis of the embodiments of the leaf springs listed above, it is possible to develop further optimized solutions, for example in order to prevent the connecting spring from seizing and possible stress concentrations, the second fixed connection section of the connecting spring being rounded off on the side facing away from the curved section at the intersection of the diagonal section and the inner and outer contour lines. Correspondingly, the pressure plate and the partition plate arranged at the position corresponding to the second fixed connection section of the leaf spring assembly are also correspondingly rounded. Other sharp corners can be chamfered according to the use requirement. The leaf springs are manufactured by various methods, such as stamping, wire cutting, etc.

Since the specific structure of the connection spring of the present invention may be the same as that of the above-described various embodiments of the leaf spring, the embodiments of the connection spring will not be described.

The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.