JP2008291853A - Belleville spring, and method for using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a belleville spring capable of preventing displacement thereof in the radial direction at low costs even in the case of combining a plurality of the belleville springs for use, and to provide a method for using the same. <P>SOLUTION: The belleville spring comprises a plurality of first recessed parts 12 formed with an equal interval along the circumferential direction on the inner diameter side of a first surface 11 directed outside in the radial direction and a plurality of second recessed parts 15 formed with an equal interval along the circumferential direction on the outer diameter side of a second surface 14 directed inside in the radial direction. The first recessed part 12 is formed into a sector shape, of which circumferential length is longer as it comes more outside in the radial direction, and the second recessed part 15 is formed into a sector shape, of which circumferential length is shorter as it comes more inside in the radial direction. The circumferential length L1 of the first recessed part 12 and the interval L2 between the first recessed parts 12 adjacent to each other in the circumferential direction are formed equal to each other, and the circumferential length L3 of the second recessed part 15 and the interval L4 of the second recessed parts 15 adjacent to each other in the circumferential direction are formed equal to each other. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disc spring and a method of using the same.

  In general, a disc spring widely used as a machine element part is often used in combination with a plurality of disc springs. When a plurality of disc springs are used in this way, the disc spring is usually adjusted in diameter by supporting the center hole of the disc spring with a guide shaft or supporting the outer periphery of the disc spring with a guide housing. It is intended to prevent shifting in the direction. Such guide shafts, guide housings, and the like are subjected to surface treatment to increase the surface hardness because the disc springs rub against the disc springs when they are subjected to a compression load or a tensile load. .

JP 2003-065377 A

  Thus, when a plurality of disc springs are used in a stacked manner, as described above, since a member such as a guide shaft or a guide housing which has been surface-treated so as to increase the surface hardness is used, the cost increases. It was a cause.

  For this reason, the present invention has an object of providing a disc spring and a method of using the same that can prevent a shift in the radial direction at a low cost even when used in combination. .

  The disc spring according to the present invention for solving the above-described problem is a disc spring, in which the inner diameter side engaging portion formed on the inner diameter side of the outer surface facing the radially outer side and the inner side facing the radially inner side are arranged. An outer-diameter-side engaging portion formed on the outer-diameter side of the side surface, and when the two disc springs are combined with the outer surfaces facing each other, relative movement in the radial direction of the two disc springs is restricted. When the inner diameter side engaging portions are engaged with each other and the inner side surfaces are opposed to each other and two disc springs are combined, the outer diameter is regulated so as to restrict the relative movement of the two disc springs in the radial direction. The side engaging portions are engaged with each other.

  Further, the disc spring according to the present invention is the disc spring described above, wherein the inner diameter side engaging portion is formed along the thickness direction and the radial direction of the disc spring and has a pair of inner diameter side engaging surfaces facing each other. A plurality of sets are provided along the circumferential direction, and an interval between one of the pair of inner diameter side engaging surfaces and the other is equal to an interval between the inner diameter side engaging surfaces of the set adjacent in the circumferential direction. The outer diameter side engaging portion has a plurality of pairs of outer diameter side engaging surfaces formed along the thickness direction and the radial direction of the disc spring and facing each other along the circumferential direction. The distance between one and the other of the outer diameter side engaging surfaces is equal to the distance between the outer diameter side engaging surfaces of the set adjacent in the circumferential direction.

  Further, the disc spring according to the present invention is the disc spring described above, wherein the pair of inner diameter side engagement surfaces are a pair of first side surfaces formed by a first recess or a first notch, The pair of outer diameter side engagement surfaces are a pair of second side surfaces formed by a second recess or a second notch.

  Further, the disc spring according to the present invention is the disc spring described above, wherein the inner diameter side engaging portion is adjacent to the plurality of first inner diameter side engaging portions formed along the circumferential direction in the circumferential direction. A second inner diameter side engaging portion formed between the first inner diameter side engaging portions, wherein the outer diameter side engaging portion is formed along the circumferential direction. A diameter side engaging portion and a second outer diameter side engaging portion formed between the first outer diameter side engaging portions adjacent to each other in the circumferential direction, with the outer surfaces facing each other. When two disc springs are combined, all the first inner diameter side engaging portions of one disc spring engage with all the second inner diameter side engaging portions of the other disc spring. When the two disc springs are combined with the sides facing each other, all the first outer diameter side engaging portions of one disc spring and all the second outer diameter sides of the other disc spring And the engagement portion, characterized in that is intended to engage.

  Moreover, the disc spring which concerns on this invention is a disc spring mentioned above. WHEREIN: A said 1st inner diameter side engaging part is a 1st recessed part or a 1st notch part, Said 1st outer diameter side engagement The portion is a second recess or a second notch.

  Further, the disc spring according to the present invention includes a plurality of first recesses formed at equal intervals along the circumferential direction on the inner diameter side of the outer surface facing outward in the radial direction, and an outer surface of the inner surface facing inward in the radial direction. A plurality of second recesses formed at equal intervals along the circumferential direction on the radial side, and the first recess forms a fan shape having a longer circumferential length toward the outer side in the radial direction. The concave portion has a fan-like shape whose length in the circumferential direction is shorter toward the inner side in the radial direction, the circumferential length at an arbitrary radial position of the first concave portion, and the radial position of the first concave portion adjacent in the circumferential direction. The interval has the same length, and the circumferential length at an arbitrary radial position of the second recess is equal to the interval at the radial position of the second recess adjacent in the circumferential direction. It is characterized by.

  Moreover, the usage method of the disc spring which concerns on this invention is the usage method of the disc spring mentioned above, Comprising: When combining the said outer surfaces of two said disc springs so that it may oppose, the said 1st of the said disc springs One recess is fitted to the other one of the first recesses adjacent in the circumferential direction of the other disc spring.

  Moreover, the usage method of the disc spring according to the present invention is the above-described usage method of the disc spring, and when the inner surfaces of the two disc springs are combined so as to face each other, the first disc spring of the disc spring is used. The second recess and the second recess adjacent to each other in the circumferential direction of the other disc spring are fitted.

  According to the disc spring and the method of using the same according to the present invention, it is possible to prevent displacement in the radial direction only by supporting only the disc springs located at both ends combined. For this reason, since it is possible to prevent displacement in the radial direction without using a member such as a guide shaft or a guide housing over the entire length of the spring constituted by combining the disc springs, when using a combination of a plurality of springs Even if it exists, the shift | offset | difference to a radial direction can be prevented at low cost.

  An embodiment of a disc spring and a method of using the same according to the present invention will be described with reference to FIGS. FIG. 1 is a structural diagram of a disc spring, and FIG. 2 is an explanatory diagram of a method of using the disc spring of FIG.

  As shown in FIG. 1, the disc spring 10 according to the present embodiment is configured such that the plate material is formed in an annular shape, and the position of the inner peripheral surface 10 a and the position of the outer peripheral surface 10 b are different with respect to the axial direction of the central axis P. Conical.

  On the radially outer side of the disc spring 10, that is, on the inner peripheral surface 10 a side (inner diameter side) of the first surface 11 that is the outer surface facing the center O, the first inner diameter side engaging portion A plurality of first recesses 12 (six in this embodiment) are formed at equal intervals along the circumferential direction of the inner peripheral surface 10a. These first recesses 12 open to the inner peripheral surface 10a and the first surface 11 and extend outward in the radial direction. As the distance from the center O increases, It has a fan shape that increases the length of the direction.

  The first concave portion 12 is formed along the thickness direction and the radial direction of the disc spring 10 and has first side surfaces 12a and 12a, which are a pair of inner diameter side engaging surfaces facing each other in the circumferential direction. The first side surfaces 12a and 12a are flat surfaces extending radially from the center O. That is, a plurality of pairs (six pairs in the present embodiment) of the first side surfaces 12a and 12a forming a pair are formed in the circumferential direction.

  Between the first recesses 12 adjacent to each other in the circumferential direction of the first surface 11 of the disc spring 10, engagement portions 13 that are second inner diameter side engagement portions are formed. The first recess 12 and the engagement portion 13 are circumferential lengths of the first recess 12 at a position (arbitrary radial position) of an arbitrary length R1 from the center O in the radial direction, That is, the distance L1 between the pair of first side surfaces 12a and 12a and the circumferential length of the engaging portion 13 at the above-described position, in other words, the circumferential direction of the first concave portion 12 adjacent in the circumferential direction. , I.e., a pair of adjacent intervals L2 in the circumferential direction of the first side surfaces 12a, 12a are formed to have the same length.

  On the other hand, on the radially outer side of the disc spring 10, that is, on the outer peripheral surface 10 b side (outer diameter side) of the second surface 14 which is the inner surface facing the center O, the first outer diameter is provided. A plurality (six in this embodiment) of second recesses 15 which are side engaging portions are formed at equal intervals along the circumferential direction of the outer peripheral surface 10b. These second recesses 15 open to the outer peripheral surface 10b and the second surface 14 and extend radially inward. The closer to the inner side in the radial direction, that is, the closer to the center O, the circumferential direction It has a fan shape that shortens its length.

  The second recess 15 includes second side surfaces 15a and 15a, which are a pair of outer diameter side engaging surfaces that are formed along the thickness direction and the radial direction of the disc spring 10 and face each other in the circumferential direction. Each of the second side surfaces 15a and 15a is a flat surface extending radially from the center O. That is, a plurality of pairs (six pairs in the present embodiment) of the second side surfaces 15a and 15a forming a pair are formed in the circumferential direction.

  Between the second recesses 15 adjacent to each other in the circumferential direction of the second surface 14 of the disc spring 10, engagement portions 16 that are second outer diameter side engagement portions are formed. The second concave portion 15 and the engaging portion 16 are circumferential lengths of the second concave portion 15 at a position of arbitrary length R2 (arbitrary radial position) in the radial direction from the center O, That is, the distance L3 between the pair of second side surfaces 15a and 15a and the circumferential length of the engaging portion 16 at the above-described position, in other words, the circumferential direction of the second recess 15 adjacent in the circumferential direction. , That is, a pair of adjacent intervals L4 in the circumferential direction of the second side surfaces 15a, 15a that are paired with each other are formed to have the same length.

  In the present embodiment, the first concave portion 12 having the first side surfaces 12a and 12a that form a pair constitutes an inner diameter side engaging portion, and has the second side surfaces 15a and 15a that form a pair. The second recess 15 constitutes an outer diameter side engaging portion.

  Next, the operation of the disc spring 10 according to the present embodiment having such a structure will be described.

  As shown in FIG. 2, the first surfaces 11 are opposed to each other when a plurality of disc springs 10 are alternately combined (in series combination) so that the first surfaces 11 and the second surfaces 14 are opposed to each other. The first concave portion 12 of the first surface 11 of the one disc spring 10 to be combined with the engaging portion 13 of the first surface 11 of the other disc spring 10 is opposed to the second. The second concave portions 15 of the second surface 14 of the one disc spring 10 and the engaging portion 16 of the second surface 14 of the other disc spring 10 are opposed to each other. Then, all the first recesses 12 of one disc spring 10 combined with the first surfaces 11 facing each other and all the engaging portions 13 of the other disc spring 10, that is, adjacent in the circumferential direction. When the fitting between the matching first recesses 12 , All the second recesses 15 of one disc spring 10 combined with the second surfaces 14 facing each other, and all the engaging portions 16 of the other disc spring 10, that is, first adjacent in the circumferential direction. The space between the two recesses 15 is fitted.

  That is, the first recess 12 and the engagement portion 13 are circumferentially arranged so that the distance L1 and the distance L2 at the arbitrary length R1 in the radial direction from the center O are equal to each other. Are alternately formed at equal intervals, so that all the first recesses 12 of one disc spring 10 and all the engaging portions 13 of the other disc spring 10 can be fitted. The two disc springs 10 can be combined with the surfaces 11 facing each other, and the distance L3 and the distance L4 at an arbitrary length R2 from the center O in the radial direction are equal to each other. As described above, since the second recesses 15 and the engaging portions 16 are alternately formed at equal intervals in the circumferential direction, all the second recesses 15 of the one disk spring 10 and the other dish All the engaging portions 16 of the spring 10 can be fitted, It is possible to combine the two disk spring 10 the second surface 14 while being opposed to each other.

  As a result, the support members 101 and 103 with the support bosses 102 and 104 projecting can support only the disc springs 10 positioned on both end sides combined in series, and the radial displacement and the relative movement in the circumferential direction can be achieved. Is prevented.

  Because, when a force in the radial direction is applied to some of the disc springs 10 from the outside, the one disc spring 10 is in contrast to the other disc spring 10 combined so that the first surfaces 11 face each other. The distance L1, L2 in the circumferential direction between the first concave portion 12 and the engaging portion 13 located at a position where the force acts on the inside in the radial direction is determined by the force. It is shorter toward the downstream side (inner peripheral side 10a side) than the upstream side in the action direction (outer peripheral side 10b side), in other words, the width of the engaging portion 13 of one disc spring 10 that is going to move radially inward. Becomes wider toward the outer side in the radial direction, and the distance between the first side surfaces 12a and 12a forming the pair of the first recesses 12 of the other disc spring 10 fitted to the engaging portion 13 is the inner side in the radial direction. Narrower as you head toward Further, the first side surfaces 12a and 12a forming the pair of the first recesses 12 restrict the movement of the engagement portion 13 in the radial direction, so that the first surfaces 11 face each other. This is because the radial displacement with respect to the other disc spring 10 combined with is prevented.

  And one said disc spring 10 is going to move to the radial direction by the said force similarly to the above with respect to the other disc spring 10 combined so that 2nd surface 14 may be made to oppose. The distances L3 and L4 in the circumferential direction of the second concave portion 15 and the engaging portion 16 located at a place where the force acts on the radially inner side are larger than the upstream side (outer peripheral side 10b side) in the direction of the force. As the downstream side (inner peripheral side 10a side) is shorter, in other words, the width of the engaging portion 16 of one disc spring 10 that is going to move radially inward becomes wider toward the radially outer side, Since the interval between the second side surfaces 15a and 15a forming the pair of the second concave portions 15 of the other disc spring 10 fitted to the engaging portion 16 becomes narrower toward the radially inner side, Form a pair of second recesses 15 Serial second aspect 15a, movement in the radially inward of the engaging portion 16 by 15a is restricted, as a result, deviation in the radial direction is prevented.

  Further, even when a circumferential force is applied to some of the disc springs 10 from the outside, the pair of the first side surfaces 12a and 12a and the second side surfaces 15a and 15a that extend along the radial direction are provided. Therefore, the movement of the engaging portions 13 and 16 in the circumferential direction is restricted, and as a result, relative movement in the circumferential direction is prevented.

  For this reason, even if it does not use members, such as a guide shaft and a guide housing, over the full length of the spring comprised combining disc spring 10, shift in a diameter direction can be prevented.

  Therefore, according to the present embodiment, even when a plurality of combinations are used, it is possible to prevent radial displacement at a low cost.

  In the present embodiment, six first concave portions 12 are formed on the first surface 11 at equal intervals along the circumferential direction, and six second concave portions 15 are formed at equal intervals along the circumferential direction. Although the case of the disc spring 10 formed on the second surface 14 has been described, as another embodiment, for example, as shown in FIG. 3, two first concave portions 22 are formed at equal intervals along the circumferential direction. And a plurality of the second recesses 25 at equal intervals along the circumferential direction, such as a disc spring 20 formed at the second surface 14 at equal intervals along the circumferential direction. If it is a disc spring in which the first concave portion is formed on the first surface and a plurality of second concave portions are formed on the second surface at equal intervals along the circumferential direction, the same as in the case of this embodiment An effect can be obtained. In FIG. 3, reference numerals 23 and 26 denote engaging portions.

  In the present embodiment, the first spring 12 having a concave shape is formed on the first surface 11, and the disc spring 10 having the second concave portion 15 having a concave shape formed on the second surface 14. As another embodiment in place of the recesses 12 and 14, for example, as shown in FIG. 4, the first surface 11 and the second surface 14 are notched so as to penetrate the first surface 11 and the second surface 14. The same effect as the case of this embodiment can be obtained also by setting it as the disc spring 30 which formed the one notch part 32 and the 2nd notch part 35. FIG. In FIG. 4, 32a is a first side surface, 35a is a second side surface, and 33 and 36 are engaging portions.

  Moreover, in this embodiment, as shown in FIG. 2, although the case where one disc spring 10 was used combining several in series alternately was demonstrated, as shown in FIG. 5, as other embodiment, for example. It is also possible to use a combination of a plurality of disc springs 10 that are a combination of a plurality of the first surface 11 and the second surface 14 arranged in parallel with each other.

  Further, in the present embodiment, as shown in FIG. 2C, the support members 101 and 103 provided with the projecting support bosses 102 and 104 are used to support only the disc springs 10 on the both end sides combined. Depending on the situation, it is possible to prevent the radial displacement by simply sandwiching a plurality of disc springs 10 and 20 from both ends with a flat support member having no support boss.

  The disc spring and the method of using the same according to the present invention can prevent the shift in the radial direction at low cost, and can be used extremely beneficially in various industries such as the machine industry.

It is a structural diagram of an embodiment of a disc spring according to the present invention. It is explanatory drawing of the usage method of the disk spring of FIG. FIG. 6 is a structural diagram of another embodiment of a disc spring according to the present invention. FIG. 6 is a structural diagram of still another embodiment of a disc spring according to the present invention. It is explanatory drawing of other embodiment of the usage method of the disk spring which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Disc spring 10a Inner peripheral surface 10b Outer peripheral surface 11 1st surface 12 1st recessed part 12a 1st side surface 13 engaging part 14 2nd surface 15 2nd recessed part 15a 2nd side surface 16 engaging part 20 dish Spring 22 First recess 23 Engagement portion 25 Second recess 26 Engagement portion 30 Belleville spring 32 First notch portion 32a First side surface 33 Engagement portion 35 Second notch portion 35a Second side surface 36 engaging part 101,103 support member 102,104 support boss

Claims (8)

In the disc spring,
An inner diameter side engaging portion formed on the inner diameter side of the outer surface facing radially outward;
An outer diameter side engaging portion formed on the outer diameter side of the inner surface facing inward in the radial direction,
When the two disc springs are combined with the outer surfaces facing each other, the inner diameter side engaging portions engage with each other so as to regulate the relative movement in the radial direction of the two disc springs,
When the two disk springs are combined with the inner surfaces facing each other, the outer diameter side engaging portions engage with each other so as to restrict relative movement in the radial direction of the two disk springs. Belleville springs featured. The disc spring according to claim 1,
The inner diameter side engaging portion has a plurality of pairs of inner diameter side engaging surfaces formed along the thickness direction and the radial direction of the disc spring and facing each other along the circumferential direction. The interval between one and the other of the mating surfaces and the interval between the inner diameter side engaging surfaces of the set adjacent to each other in the circumferential direction are equal.
The outer diameter side engaging portion has a plurality of pairs of outer diameter side engaging surfaces formed along the thickness direction and the radial direction of the disc spring and facing each other along the circumferential direction. A disc spring characterized in that an interval between one and the other of the diameter side engagement surfaces is equal to an interval between the outer diameter side engagement surfaces of the set adjacent in the circumferential direction. The disc spring according to claim 2,
The pair of inner diameter side engaging surfaces is a pair of first side surfaces formed by a first recess or a first notch,
A pair of said outer diameter side engaging surfaces are a pair of 2nd side surfaces formed of a 2nd recessed part or a 2nd notch part. The disc spring characterized by the above-mentioned. The disc spring according to claim 1,
The inner diameter side engaging portion is
A plurality of first inner diameter side engaging portions formed along the circumferential direction;
A second inner diameter side engaging portion formed between the first inner diameter side engaging portions adjacent in the circumferential direction,
The outer diameter side engaging portion is
A plurality of first outer diameter side engaging portions formed along the circumferential direction;
A second outer diameter side engaging portion formed between the first outer diameter side engaging portions adjacent in the circumferential direction,
When the two disc springs are combined with the outer surfaces facing each other, all the first inner diameter side engaging portions of one disc spring and all the second inner diameter side engaging portions of the other disc spring are combined. And engage
When the two disc springs are combined with the inner surfaces facing each other, all the first outer diameter side engaging portions of one disc spring and all the second outer diameter side engagements of the other disc spring are combined. A disc spring characterized by being engaged with a joint. The disc spring according to claim 4,
The first inner diameter side engaging portion is a first recess or a first notch,
The disc spring according to claim 1, wherein the first outer diameter side engaging portion is a second recess or a second notch. A plurality of first recesses formed at equal intervals along the circumferential direction on the inner diameter side of the outer surface facing radially outward;
A plurality of second recesses formed at equal intervals along the circumferential direction on the outer diameter side of the inner surface facing radially inward,
The first recess has a fan shape with a longer circumferential length toward the radially outer side,
The second recess has a fan shape with a shorter length in the circumferential direction toward the radially inner side,
The circumferential length at an arbitrary radial position of the first recess and the interval at the radial position of the first recess adjacent in the circumferential direction form an equal length,
A disc spring characterized in that the circumferential length at an arbitrary radial position of the second concave portion and the interval at the radial position of the second concave portion adjacent in the circumferential direction are equal to each other. It is a usage method of the disc spring of Claim 6, Comprising:
In combining the outer surfaces of the two disc springs so as to face each other, between the first concave portion of one of the disc springs and the first concave portion adjacent to the circumferential direction of the other disc spring. A method of using a disc spring, characterized in that the two are fitted together. It is a usage method of the disc spring of Claim 6, Comprising:
In combining so that the inner side surfaces of the two disc springs face each other, between the second concave portion of one of the disc springs and between the second concave portion adjacent to the other of the disc springs in the circumferential direction A method of using a disc spring, characterized in that the two are fitted together.

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