A disc spring with sudden change in force characteristic

Abstract

The invention discloses a disc spring with sudden change in force value characteristic, comprising a disc spring body, wherein the disc spring body section is formed by chamfering the upper inner diameter side of a rectangular section and / or chamfering the lower outer diameter side, the upper surface of the disc spring body section is connected by an inner upper end line segment A1B1 on the inner diameter side and an outer upper end line segment C1B1 on the outer diameter side, and the angle between the inner upper end line segment A1B1 and the extension line of the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body section is connected by an outer lower end line segment A2B2 on the outer diameter side and an inner lower end line segment C2B2 on the inner diameter side, the angle between the inner lower end line segment C2B2 and the horizontal line at point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the sudden change in force value characteristic of the disc spring during compression is achieved according to the specific relationship formed by α1, α2 and α3; the structure is reasonable and easy to manufacture and produce.

Description

Technical Field

[0001] The invention relates to the technical field of springs, and in particular to a disc spring with a sudden change in force value characteristics. Background Art

[0002] Disc springs, as basic parts of mechanical equipment, are used in many fields of modern industry, especially in the machinery industry, railway industry, construction industry and nuclear power industry. The demand for disc spring devices is increasing; the existing disc springs have a smooth and continuous force characteristic during compression, but in many application fields, a sudden force characteristic is required; therefore, a disc spring with a sudden force characteristic is urgently needed. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a disc spring with a sudden change in force characteristic, which has a reasonable structural design and can achieve a sudden change in the force characteristic of the disc spring during the compression process.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A disc spring with a sudden change in force characteristic comprises a disc spring body, wherein the disc spring body cross section is formed by a chamfer on the inner diameter side of the upper end and / or a chamfer on the outer diameter side of the lower end, wherein the upper surface of the disc spring body cross section is connected by an inner upper end line segment A1B1 on the inner diameter side and an outer upper end line segment C1B1 on the outer diameter side, and the angle between the extension lines of the inner upper end line segment A1B1 and the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body cross section is formed by an outer lower end line segment A2B2 on the outer diameter side and an inner lower end line segment A2B1 on the inner diameter side. The inner lower end line segment C2B2 is connected, the angle between the inner lower end line segment C2B2 and the horizontal line at the point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the α2 is greater than zero and less than α1, the α3 is equal to zero or α3 is equal to α1; when α3 is equal to zero, the disc spring body has a rectangular cross-section and the upper inner diameter side of the cross-section forms a chamfer; when α3 is equal to α1, the disc spring body has a rectangular cross-section and the upper inner diameter side and the lower outer diameter side of the cross-section form a chamfer.

[0006] A disc spring with a sudden change in force value characteristics, comprising a disc spring body, wherein the disc spring body cross section is formed by a chamfer on the inner diameter side of the upper end and / or a chamfer on the outer diameter side of the lower end, wherein the upper surface of the disc spring body cross section is connected by an inner upper end line segment A1B1 on the inner diameter side and an outer upper end line segment C1B1 on the outer diameter side, wherein the angle between the extension lines of the inner upper end line segment A1B1 and the outer upper end line segment C1B1 on the outer diameter side is α2; and the lower surface of the disc spring body cross section is formed by an outer lower end line segment A2B2 on the outer diameter side and an outer lower end line segment A2B2 on the inner diameter side. The inner lower end line segment C2B2 is connected, the angle between the inner lower end line segment C2B2 and the horizontal line at the point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the α3 is greater than zero and less than α1, the α2 is equal to zero or α2 is equal to α1; when α2 is equal to zero, the lower end outer diameter side of the disc spring body with a rectangular cross-section forms a chamfer; when α2 is equal to α1, the upper inner diameter side and the lower outer diameter side of the disc spring body with a rectangular cross-section form a chamfer.

[0007] A disc spring with a sudden change in force value characteristics comprises a disc spring body, wherein the disc spring body has a rectangular cross section and is formed by a chamfer on the upper inner diameter side and / or a chamfer on the lower outer diameter side, the upper surface of the disc spring body cross section is connected by an inner upper end line segment A1B1 on the inner diameter side and an outer upper end line segment C1B1 on the outer diameter side, and the angle between the inner upper end line segment A1B1 and the extension line of the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body cross section is connected by an outer lower end line segment A2B2 on the outer diameter side and an inner lower end line segment C2B2 on the inner diameter side, the angle between the inner lower end line segment C2B2 and the horizontal line at point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the α3 is greater than zero and less than α1, the α2 is greater than zero and less than α1, and the disc spring body has a rectangular cross section and is formed with a chamfer on the upper inner diameter side and the lower outer diameter side.

[0008] Preferably, α2 is greater than α3.

[0009] Preferably, α2 is smaller than α3.

[0010] Preferably, α2 is equal to α3.

[0011] Preferably, the disc spring body is processed from a rectangular disc spring.

[0012] According to the above technical solution, the beneficial effects of the present invention are:

[0013] Compared with existing technologies,

[0014] The present invention realizes a sudden change in the force characteristic of the disc spring during compression by forming angles α1, α2 and α3, through which the upper surface of the disc spring body cross section is connected by an inner upper end line segment A1B1 on the inner diameter side and an outer upper end line segment C1B1 on the outer diameter side, and the lower surface of the disc spring body cross section is connected by an outer lower end line segment A2B2 on the outer diameter side and an inner lower end line segment C2B2 on the inner diameter side; and the specific relationship formed by α1, α2 and α3; the structure is reasonable and easy to manufacture. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the sudden disc spring of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at position I in the middle;

[0017] Figure 3 It is a partial structural schematic diagram of the sudden change of the disc spring cross section in the first embodiment;

[0018] Figure 4 This is a schematic diagram of the cross-sectional structure of the sudden disc spring of Example 1 before being placed between the upper and lower pressure plates;

[0019] Figure 5 It is a partial structural schematic diagram of the sudden change in the cross section of the disc spring in the second embodiment;

[0020] Figure 6 This is a schematic diagram of the cross-sectional structure of the second embodiment of the sudden disc spring placed between the upper and lower pressure plates before being compressed;

[0021] Figure 7 It is a partial structural schematic diagram of the cross section of the sudden disc spring in Example 3;

[0022] Figure 8 This is a schematic diagram of the cross-sectional structure of the sudden disc spring of Example 3 before being placed between the upper and lower pressure plates;

[0023] Fig. 9 It is a partial structural schematic diagram of the cross section of the sudden disc spring in the fourth embodiment;

[0024] Fig.10 This is a schematic diagram of the cross-sectional structure of the fourth embodiment of the sudden disc spring placed between the upper and lower pressure plates before being compressed;

[0025] Fig.11 It is a partial structural schematic diagram of the sudden change in the cross section of the disc spring in the fifth embodiment;

[0026] Fig.12 This is a schematic diagram of the cross-sectional structure of the sudden disc spring of Example 5 before being placed between the upper and lower pressure plates and subjected to pressure;

[0027] Fig.13It is a schematic diagram of the force characteristic curve of the rectangular disc spring;

[0028] Fig.14 It is a schematic diagram of a sudden change in the force characteristic curve of a sudden disc spring;

[0029] Fig.15 It is a schematic diagram of the secondary mutation of the force characteristic curve of the sudden disc spring;

[0030] Fig.16 It is a schematic diagram of the simultaneous superposition of secondary mutations in the force characteristic curve of the sudden disc spring. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention.

[0032] like Figure 1-2 As shown, a disc spring with a sudden change in force value characteristics includes a disc spring body 1, the disc spring body cross-section is a rectangular cross-section formed by a chamfer on the upper inner diameter side and / or a chamfer on the lower outer diameter side, the upper surface of the disc spring body 1 cross-section is connected by an inner upper end line segment A1B1 on the inner diameter side and an outer upper end line segment C1B1 on the outer diameter side, and the angle between the inner upper end line segment A1B1 and the extension line of the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body 1 cross-section is connected by an outer lower end line segment A2B2 on the outer diameter side and an inner lower end line segment C2B2 on the inner diameter side, the angle between the inner lower end line segment C2B2 and the horizontal line at point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3.

[0033] Fig.13 It is a schematic diagram of the force characteristic curve of the rectangular disc spring.

[0034] Embodiment 1, as Figure 3 , 4 As shown, α2 is greater than zero and less than α1, and α3 is equal to zero; the disc spring is placed between the upper pressure plate 2 and the lower pressure plate 3, the disc spring body 1 cross section, the upper pressure plate 2 contacts the point A1, the lower pressure plate 3 contacts the point A2, the lower pressure plate 3 is fixed, and when the upper pressure plate 2 presses downward, α1 gradually decreases. When α1 is equal to α2, the upper surface of the disc spring body 1 cross section is horizontal from the inner upper end line segment A1B1 on the inner diameter side, and the upper pressure plate 2 continues to press downward. When α1 is less than α2, the force contact point on the upper surface of the disc spring body 1 cross section changes from A1 to B1, and the disc spring force value characteristic curve suddenly changes as shown in Fig.14 .

[0035] Embodiment 2, as Figure 5 , 6As shown, α2 is greater than zero and less than α1, and α3 is equal to α1. The outer lower end line segment A2B2 of the disc spring body 1 cross section is horizontal. The disc spring is placed between the upper pressure plate 2 and the lower pressure plate 3. The upper pressure plate 2 contacts the A1 point, and the lower pressure plate 3 contacts the A2B2 support surface. When the upper pressure plate 2 is pressed down, the force point on the lower surface transitions to the B2 point, and α1 gradually decreases. When α1 is equal to α2, the upper surface of the disc spring body 1 cross section is horizontal from the inner upper end line segment A1B1 on the inner diameter side, and the upper pressure plate 2 continues to press down. When α1 is less than α2, the contact point of the upper surface of the disc spring body 1 cross section changes from A1 to B1, and the disc spring force value characteristic curve suddenly changes as shown in Fig.14 .

[0036] Embodiment three, as Figure 7 , 8 As shown, α3 is greater than zero and less than α1, and α2 is equal to zero. The disc spring is placed between the upper pressure plate 2 and the lower pressure plate 3. The disc spring body 1 has a cross section, the upper pressure plate 2 contacts point A1, and the lower pressure plate 3 contacts point A2. The lower pressure plate 3 is fixed. When the upper pressure plate 2 is pressed downward, α1 gradually decreases. When α1 is equal to α3, the lower end line segment A2B2 of the lower surface of the disc spring body 1 cross section is horizontal. When the upper pressure plate 2 continues to press downward, the force contact point of the lower surface transitions from point A2 to point B2. The disc spring force characteristic curve suddenly changes as shown in Fig.14 .

[0037] Embodiment 4, as Fig. 9 , 10 As shown, α3 is greater than zero and less than α1, and α2 is equal to α1; the disc spring is placed between the upper pressure plate 2 and the lower pressure plate 3. On the cross section of the disc spring body 1, the upper pressure plate 2 contacts the A1B1 support surface, and the lower pressure plate 3 contacts the A2 point. The lower pressure plate 3 is fixed. When the upper pressure plate 2 is pressed downward, the force point on the upper surface transitions to the B1 point. During the downward pressing process, α1 gradually decreases. When α1 is equal to α3, the lower surface of the cross section of the disc spring body 1 is horizontal from the outer end line segment A2B2 on the outer diameter side. The upper pressure plate 2 continues to press downward. When α1 is less than α3, the force contact point on the lower surface of the cross section of the disc spring body 1 changes from A2 to B2. The disc spring force value characteristic curve suddenly changes as shown in Fig.14 .

[0038] Embodiment 5, as Fig.11 , 12 As shown, α2 is greater than zero and less than α1, α3 is greater than zero and less than α1, the disc spring is placed between the upper pressure plate 2 and the lower pressure plate 3, on the cross section of the disc spring body 1, the upper pressure plate 2 contacts point A1, the lower pressure plate 3 contacts point A2, and the lower pressure plate 3 is fixed.

[0039] When α2 is greater than α3, when the upper pressure plate 2 is pressed downward, α1 gradually decreases during the pressing process. When α1 decreases to equal α2, the upper surface of the cross section of the disc spring body 1 is horizontal from the inner upper end line segment A1B1 on the inner diameter side, and the upper pressure plate 2 continues to press down. When α1 is less than α2, the contact point of the upper surface of the cross section of the disc spring body 1 changes from A1 to B1, and the disc spring force characteristic curve suddenly changes; continue to press the upper pressure plate 2 downward, when α1 decreases to equal α3, the outer lower end line segment A2B2 on the outer diameter side of the lower surface of the cross section of the disc spring body 1 is horizontal, and the upper pressure plate 2 continues to press down. When α1 is less than α3, the force contact point of the lower surface of the cross section of the disc spring body 1 changes from A2 to B2, and the disc spring force characteristic curve undergoes a secondary mutation as shown in FIG. Fig.15 ;

[0040] When α2 is less than α3, when the upper pressure plate 2 is pressed downward, α1 gradually decreases during the pressing process. When α1 decreases to equal α3, the outer lower end line segment A2B2 on the outer diameter side of the lower surface of the disc spring body 1 cross section is horizontal, and the upper pressure plate 2 continues to press down. When α1 is less than α3, the force contact point on the lower surface of the disc spring body 1 cross section changes from A2 to B2, and the disc spring force characteristic curve undergoes a sudden change; continue to press the upper pressure plate 2 downward, when α1 decreases to equal α2, the upper surface of the disc spring body 1 cross section changes from the inner upper end line segment A1B1 on the inner diameter side to the horizontal, and the upper pressure plate 2 continues to press down. When α1 is less than α2, the force contact point on the upper surface of the disc spring body 1 cross section changes from A1 to B1, and the disc spring force characteristic curve undergoes a secondary sudden change, such as Fig.15 .

[0041] Similarly, when α2 is equal to α3, when the upper pressure plate 2 is pressed downward, α1 gradually decreases during the pressing process. When α1 decreases to equal α2 and α3, the upper surface of the disc spring body 1 cross section is horizontal from the inner upper end line segment A1B1 on the inner diameter side; the outer lower end line segment A2B2 on the outer diameter side of the lower surface is horizontal. Continue to press the upper pressure plate 2 downward. When α1 decreases to less than α2 and α3, the force contact point on the upper surface of the disc spring body 1 cross section changes from A1 to B1, and the disc spring force characteristic curve suddenly changes. The force contact point on the lower surface of the disc spring body 1 cross section changes from A2 to B2, and the disc spring force characteristic curve suddenly changes. The secondary mutations are superimposed to form a primary force characteristic curve mutation, such as Fig.16 .

[0042] However, the above description is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Therefore, any equivalent structural changes made using the contents of the present invention description and drawings are also included in the scope of the present invention.

Claims

1. A disc spring with a sudden change in force characteristic, comprising a disc spring body, characterized in that: The disc spring body section is formed by the chamfer of the upper inner diameter side and / or the chamfer of the lower outer diameter side of the rectangular section. The upper surface of the disc spring body section is connected by the inner upper end line segment A1B1 on the inner diameter side and the outer upper end line segment C1B1 on the outer diameter side. The angle between the inner upper end line segment A1B1 and the extended line of the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body section is connected by the outer lower end line segment A2B2 on the outer diameter side and the inner lower end line segment C2B2 on the inner diameter side. The angle between the inner lower end line segment C2B2 and the horizontal line at the point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the α2 is greater than zero and less than α1, and the α3 is equal to zero or α3 is equal to α1; when α3 is equal to zero, the disc spring body has a rectangular cross-section and the upper inner diameter side of the cross-section forms a chamfer; when α3 is equal to α1, the disc spring body has a rectangular cross-section and the upper inner diameter side and the lower outer diameter side of the cross-section form a chamfer.

2. A disc spring with a sudden change in force characteristic, comprising a disc spring body, characterized in that: The disc spring body section is formed by the chamfer of the upper inner diameter side and / or the chamfer of the lower outer diameter side of the rectangular section. The upper surface of the disc spring body section is connected by the inner upper end line segment A1B1 on the inner diameter side and the outer upper end line segment C1B1 on the outer diameter side. The angle between the inner upper end line segment A1B1 and the extended line of the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body section is connected by the outer lower end line segment A2B2 on the outer diameter side and the inner lower end line segment C2B2 on the inner diameter side. The angle between the inner lower end line segment C2B2 and the horizontal line at the point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the α3 is greater than zero and less than α1, and the α2 is equal to zero or α2 is equal to α1; when α2 is equal to zero, the lower end outer diameter side of the disc spring body with a rectangular cross-section forms a chamfer; when α2 is equal to α1, the upper end inner diameter side and the lower end outer diameter side of the disc spring body with a rectangular cross-section form a chamfer.

3. A disc spring with a sudden change in force characteristic, comprising a disc spring body, characterized in that: The disc spring body has a rectangular cross-section, and the upper inner diameter side of the disc spring body is chamfered and / or the lower outer diameter side is chamfered. The upper surface of the disc spring body cross-section is connected by the inner upper end line segment A1B1 on the inner diameter side and the outer upper end line segment C1B1 on the outer diameter side, and the angle between the inner upper end line segment A1B1 and the extension line of the outer upper end line segment C1B1 on the outer diameter side is α2; the lower surface of the disc spring body cross-section is connected by the outer lower end line segment A2B2 on the outer diameter side and the inner lower end line segment C2B2 on the inner diameter side, and the angle between the inner lower end line segment C2B2 and the horizontal line at point B2 is α1, and the angle between the outer lower end line segment A2B2 and the extension line of the inner lower end line segment C2B2 is α3; the α3 is greater than zero and less than α1, and the α2 is greater than zero and less than α1, and the disc spring body has a rectangular cross-section, and the upper inner diameter side and the lower outer diameter side are chamfered.

4. A disc spring with a sudden change in force characteristic as claimed in claim 3, characterized in that: The α2 is greater than α3.

5. A disc spring with a sudden change in force characteristic as claimed in claim 3, characterized in that: The α2 is smaller than α3.

6. A disc spring with a sudden change in force characteristic as claimed in claim 3, characterized in that: The α2 is equal to α3.

7. A disc spring with a sudden change in force characteristic as claimed in any one of claims 1 to 6, characterized in that: The disc spring body is processed from a rectangular disc spring.

Images