KR20220068801A - Integrated preload disk and Damper having the same - Google Patents

Abstract

An integral preload disk according to embodiments of the present invention is an integral preload disk used in a damper and comprises a support unit, a center hole, and a protrusion unit. The protrusion unit protrudes from an upper surface of the support unit to a prescribed height with a prescribed width, and the support unit and the protrusion unit are formed in one body. In addition, a damper according to other embodiments of the present invention comprises the integral preload disk according to above-described embodiments of the present invention. According to the present invention, damping force deviation of the damper is reduced.

Description

Integrated preload disk and Damper having the same

The present invention relates to an integral preload disk and a damper including the same, and more particularly, to an integral preload disk in which a support part and a protrusion of the preload disk are integrally formed, and the shape of the preload disk is symmetrical or asymmetrical, and It relates to a damper including the same.

In general, a damper (Shock Absorber) used in a vehicle absorbs natural vibrations generated by the shock received by a spring while the vehicle is driving to improve the safety and ride comfort of the vehicle. A hydraulic damper that uses the flow resistance of the fluid that is used in hydraulic dampers, a gas-filled damper that simultaneously uses the flow resistance of the fluid and the buffer action of the gas used in the hydraulic damper, and a composite damper that uses the flow resistance of the fluid and the shock absorption force of the spring, etc. Gas-filled dampers are divided into a mono tube type using only one tube and a twin tube type using two mutually assembled tubes.

1 is a view showing a conventional twin tube damper (Twin Tube Damper). Figure 1 (a) is a longitudinal cross-sectional view of the twin tube damper, Figure 1 (b) is a view listing the components of the piston valve (Piston Valve) shown in (a).

Various types of disks as well as preload disks are fastened to the piston valve.

A damper to which a preload disc is applied generally exhibits a high damping force. By using the preload disc, the damping force in the mid-speed range can be set high, and the vehicle body pitching control in the mid-speed range can be improved.

In the conventional preload disk, a preload ring and a disk are separately manufactured and then combined with each other.

A conventional preload disk requires at least two parts, a preload ring and a disk, and a welding method is generally used to combine the two components.

Therefore, due to assembly tolerances of the preload ring and the disc and manufacturing deviations due to welding, the damper may not generate a uniform damping force, which increases the management cost and quality cost of the damper.

Republic of Korea Patent Registration No. 1441526 (Announcement date September 17, 2014)

Therefore, an object of the present invention for solving the above-described problems is, by integrally forming the protrusion and the support according to the embodiments of the present invention corresponding to the above-described preload ring and disk, respectively, the protrusion and the support An object of the present invention is to provide an integrated preload disc and a damper including the same, which can reduce assembly tolerances and manufacturing deviations due to welding, and thereby reduce the damping force deviation of the damper.

In addition, an object of the present invention is to realize the shape of the integrated preload disk symmetrically or asymmetrically so that the bending amount of the upper disk can be partially adjusted according to the position of the protrusion, and the position of the part that can be easily opened and closed in the upper disk An object of the present invention is to provide an integrated preload disk capable of controlling the damping force in the low-speed section of the damper and a damper including the same.

However, the problems to be solved by the present invention are not limited to the above objects, and may be variously expanded without departing from the spirit and scope of the present invention.

In order to solve the problem to be solved of the present invention, exemplary embodiments of the present invention form a protrusion and a support unit integrally, or implement a symmetrical or asymmetrical shape of the integral preload disk to reduce the damping force deviation of the damper. Provided are an integrated preload disk that can reduce and control the damping force in the low speed section of the damper, and a damper including the same.

The integral preload disk according to embodiments of the present invention is an integral preload disk used for a damper, and includes a support part, a center hole, and a protrusion. The protrusion has a predetermined width from the upper surface of the support and protrudes to a predetermined height, and the support and the protrusion are integrally formed.

According to an embodiment, the shape of the preload disk is symmetrical on the left and right with respect to the central axis in the vertical direction passing through the center point of the central hole when the preload disk is arranged in the horizontal direction.

According to one embodiment, the protrusion is continuously formed along the upper edge of the support without being broken.

According to one embodiment, the protrusion is formed at a position spaced apart from the upper surface edge of the support part by a predetermined distance in the direction of the central hole.

According to one embodiment, the shape of the preload disk, when the preload disk is arranged in the horizontal direction, left and right with respect to the central axis of the vertical direction passing through the central point of the central hole is asymmetrical.

According to one embodiment, with respect to the central axis in the longitudinal direction passing through the central point of the central hole, the protrusion formed on the left side of the preload disk is formed at a position spaced apart from the edge of the support part by a predetermined distance in the central hole direction, and the right side of the preload disk The protrusion formed on the is formed on the edge of the support.

According to an embodiment, the protrusions are continuously formed without breaking on the upper surface of the support when the upper surface of the support is viewed from above, and the width and height of the continuously formed protrusions are the same.

According to one embodiment, the protrusion is continuously formed without breaking on the upper surface of the support when the upper surface of the support is viewed from above, and the height of the continuously formed protrusion increases or decreases from the left to the right of the preload disk. do.

According to one embodiment, a plurality of protrusions are formed on the upper surface of the support part, and the shapes of the plurality of protrusions are the same or different.

According to one embodiment, when the upper surface of the support is viewed from above, the protrusion is continuously formed without interruption on the upper surface of the support, the protrusion has a side surface and the upper surface of the protrusion is formed as a round surface, or the protrusion is the support portion It is formed convexly protruding upward from the upper surface of the

A damper according to other embodiments of the present invention includes the integrated preload disk according to the above-described embodiments of the present invention.

The integrated preload disk and the damper including the same according to embodiments of the present invention can reduce manufacturing deviations due to assembly tolerances and welding of the protrusion and the support, thereby reducing the deviation of the damping force of the damper.

In addition, depending on the position of the protrusion, it is possible to partially adjust the amount of bending of the upper disk, and it is possible to designate the position of the easily opened/closed portion of the upper disk, thereby controlling the damping force in the low-speed section of the damper.

In addition, it is possible to reduce the management cost and quality cost of the damper.

However, the effects of the present invention are not limited to the above effects, and may be variously expanded without departing from the spirit and scope of the present invention.

1 is a view showing a conventional twin tube damper.
2 and 3 are views illustrating a first embodiment of an integrated preload disk according to embodiments of the present invention.
4 and 5 are diagrams illustrating a second embodiment of an integrated preload disk according to embodiments of the present invention.
6 is a diagram illustrating a third embodiment of an integrated preload disk according to embodiments of the present invention.
7 is a diagram illustrating a fourth embodiment of an integrated preload disk according to embodiments of the present invention.
8 is a diagram illustrating a fifth embodiment of an integrated preload disk according to embodiments of the present invention.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Among the components of the present invention, specific descriptions thereof will be omitted so as not to obscure the gist of the present invention, which can be clearly understood by a person skilled in the art and can be easily reproduced according to the prior art.

In addition, the thickness or size of each component shown in the drawings is exaggerated, omitted, or schematically illustrated for convenience and clarity of description. In addition, the size of each component does not fully reflect the actual size.

Hereinafter, an integrated preload disk and a damper including the same according to embodiments of the present invention will be described.

According to embodiments of the present invention, the integral preload disc refers to a preload disc used in a damper. It can be applied to both a conventional twin tube damper (Twin Tube Damper) or a mono tube damper (Mono Tube Damper).

Hereinafter, descriptions of other components and operating principles of the conventional twin-tube damper or mono-tube damper will be omitted, and the integrated preload disk and the damper including the same according to embodiments of the present invention will be described. do.

The integral preload disk according to embodiments of the present invention is one component of a piston valve, and another configuration of the piston valve, like the preload disk generally used for a twin tube damper or a mono tube damper It is mounted on the piston, which is an element. And the piston is connected to one end of the piston rod (Piston Rod).

The preload disc may generate a preload by pre-curving one or more discs disposed on the preload disc.

2 and 3 are views illustrating a first embodiment of an integrated preload disk according to embodiments of the present invention.

2 and 3 , the integrated preload disk 10 according to embodiments of the present invention includes a support 11 , a central hole 15 , and a protrusion 13 . The support 11, the central hole 15, and the protrusion 13 may be integrally formed.

The support 11 may be formed of a circular plate having a constant thickness. The circular shape of the plate is a tube shape (cross-sectional shape of the tube) in a direction perpendicular to the longitudinal direction of the tube (eg, the inner tube in the case of a twin tube) on which the integral preload disk 10 is disposed in the damper. It is a shape corresponding to , and can be changed according to the cross-sectional shape of the tube.

The central hole 15 is a hole formed in the center of the integrated preload disk 10 (specifically, the support 11), and the central hole 15 has a piston and a piston rod, which are other components of the piston valve. can be placed.

The shape of the integral preload disk 10 of the first embodiment shown in FIGS. 2 and 3 is the longitudinal center of the piston rod when the integral preload disk 10 is directly or indirectly fastened to the piston and the piston rod. It shows the case where the left and right sides are symmetrical with respect to the axis. Alternatively, when the integrated preload disk 10 is disposed in the horizontal direction, the left and right sides are symmetric with respect to the central axis in the vertical direction passing through the center point of the central hole 15 .

The protrusion 13 may protrude upward from the upper surface of the support 11 to have a constant width w1 and a constant height h1.

The height h1 or the width w1 of the protrusion 13 may be determined differently depending on the degree of pre-bending of one or more disks disposed on the integral preload disk 10, that is, the degree of the preload. .

As shown in FIG. 3 , the protrusion 13 may be continuously formed along the edge of the upper surface of the support 11 without being broken, and may be formed in a single band shape. In addition, although not shown, according to an embodiment of the present invention, a plurality of protrusions may be formed by intermittently protruding along the edge of the support part 11 . In this case, each of the plurality of protrusions may have the same shape, and may be formed at a position where the left and right sides are symmetric with respect to the central axis in the vertical direction passing through the central point of the central hole 15 .

In addition, according to an embodiment of the present invention, the above-described protrusion 13 may be formed at a position spaced apart from the upper surface edge of the support part 11 by a predetermined distance in the direction of the central hole 15 (not shown).

The arrangement position of the protrusion 13 in the support 11 and the height and shape of the protrusion 13 vary depending on the degree of preload applied to one or more disks disposed on the integral preload disk 10 . can be determined

4 and 5 are views showing a second embodiment of an integrated preload disc according to embodiments of the present invention, FIG. 6 is a view showing a third embodiment of an integrated preload disc, and FIG. 7 is an integrated preload disc. It is a diagram showing a fourth embodiment of the load disk, and FIG. 8 is a diagram showing a fifth embodiment of the integrated preload disk.

4 to 8, the integral preload disk (20, 30, 40, 50) is a support portion (21, 31, 41, 51), the center hole (25, 35, 45, 55) and the protrusion (23, 33, 43, 53). The support portions 21 , 31 , 41 , 51 , the central holes 25 , 35 , 45 , 55 and the protrusions 23 , 33 , 43 and 53 may be integrally formed.

The support parts 21 , 31 , 41 , and 51 may be formed of a circular plate having a constant thickness. The circular shape of the plate is a tube shape in a direction orthogonal to the longitudinal direction of a tube (eg, an inner tube in case of a twin tube) in which the integral preload disks 20, 30, 40, 50 are disposed in the damper. (Cross-sectional shape of tube), and may vary according to the cross-sectional shape of the tube.

The central holes 25, 35, 45, 55 are holes formed in the center of the integral preload disks 20, 30, 40, 50 (specifically, the support parts 21, 31, 41, 51), and the central hole 25 , 35, 45, 55), the piston and the piston rod, which are another component of the piston valve, may be disposed.

The shapes of the integral preload disks 20, 30, 40, and 50 of the second to fifth embodiments shown in FIGS. 4 to 8 are, In the case of being directly or indirectly fastened to the piston rod, the left and right sides are asymmetrical with respect to the longitudinal central axis of the piston rod. Or when the integral preload disks 20, 30, 40, 50 are arranged in the horizontal direction, the left and right sides are asymmetrical with respect to the central axis in the vertical direction passing through the center point of the central hole 25, 35, 45, 55 indicates

Referring to the second embodiment of the integrated preload disk 20 shown in FIGS. 4 to 5 , the protrusion 23 has a predetermined width w2 and a predetermined height (w2) upward from the upper surface of the support portion 21 ( h2) can be protruded.

The height h2 or width w2 of the protrusion 23 may be determined differently depending on the degree of pre-bending of one or more disks disposed on the integral preload disk 20, that is, the degree of the preload. .

As shown in FIGS. 4 and 5 , when the integral preload disk 20 is disposed in the horizontal direction, based on the central axis of the longitudinal direction passing through the center point of the central hole 25, the integral preload disk 20 ), the protrusion 23 formed on the left side may be formed at a position spaced a predetermined distance from the edge of the support part 21 in the direction of the central hole 25 , and the protrusion 23 formed on the right side of the integrated preload disk 20 ) may be formed on the edge of the support part 21 .

The protrusion 23 protruding upward from the upper surface of the support part 21 is continuous without breaking on the upper surface of the support part 21 when the upper surface of the support part 21 is viewed from above, and is formed in a single band shape. can be Here, one band shape may be circular or oval. In addition, the predetermined width w2 and the height h2 of the protrusion 23 (or the protrusion 23 continuously formed without being broken) forming one band may be the same.

The arrangement position of the protrusion 23 in the support 21 and the height and shape of the protrusion 23 vary depending on the degree of preload applied to one or more disks disposed on the integral preload disk 20 . can be determined

Referring to the third embodiment of the integral preload disk 30 shown in FIG. 6 , the protrusion 33 has a predetermined width w3 and a predetermined height h3 upward from the upper surface of the support portion 31 . can protrude.

The height h3 or width w3 of the protrusion 33 may be determined differently depending on the degree of pre-bending of one or more disks disposed on the integral preload disk 30, that is, the degree of the preload. .

As shown in FIG. 6 , when the integrated preload disk 30 is disposed in the horizontal direction, the left side of the integrated preload disk 30 with respect to the central axis in the longitudinal direction passing through the center point of the central hole 35 . The protrusion 33 formed in the support part 31 may be formed at a location spaced apart a predetermined distance in the direction of the central hole 35 from the edge of the support part 31, and the protrusion part 33 formed on the right side of the integral preload disk 30 is the support part ( 31) can be formed on the edge.

The protrusion 33 protruding upward from the upper surface of the support part 31 is continuous without breaking on the upper surface of the support part 31 when the upper surface of the support part 31 is viewed from above. can be Here, one band shape may be circular or oval. In addition, a predetermined width w3 and a height h3 of the protrusion 33 (or the protrusion 33 continuously formed without being broken) forming one band may not be constant. For example, the height h3 of the protrusion 33 may gradually increase from left to right (height h3' is greater than h3) (refer to FIG. 6 ) or may gradually decrease (not shown).

The arrangement position of the protrusion 33 in the support part 31 and the height and shape of the protrusion 33 vary depending on the degree of preload applied to one or more disks disposed on the integral preload disk 30 . can be determined

Referring to the fourth embodiment of the integrated preload disk 40 shown in FIG. 7 , a plurality of protrusions 43 may be formed on the upper surface of the support part 41 .

Each of the protrusions 43 may protrude upward from the upper surface of the support 41 to have a predetermined width w4 and a length l and a predetermined height h4.

The difference between the integrated preload disk 40 of the fourth embodiment and the integrated preload disk 20 of the second embodiment is that the protrusion 43 of the integrated preload disk 40 does not break on the upper surface of the support part 41 . It is not continuously formed in a single band shape, but may be intermittently protruded to form a plurality. Accordingly, except for the above-described differences, the integrated preload disk 40 according to the fourth embodiment is the same as the integrated preload disk 20 according to the second embodiment, and a redundant description will be omitted below.

Each of the plurality of protrusions 43 may have the same shape as shown in FIG. 7 , or may have different shapes (not shown). In the case of other shapes, for example, the width, length and/or height of any one of the plurality of protrusions 43 may be different from the width, length and/or height of any other protrusion 43 . have.

The width, length or height of the protrusion 43 may be determined differently depending on the degree of pre-bending of one or more disks disposed on the integral preload disk 40 , that is, the degree of the preload.

Referring to the fifth embodiment of the integrated preload disk 50 shown in FIG. 8 , the protrusion 53 may be formed to convexly protrude upward from the upper surface of the support unit 51 . Here, the meaning of 'to be formed to protrude upward' indicates that the longitudinal cross-section of the support part 51 may be formed as a round surface without a side surface.

The difference between the integral preload disk 50 of the fifth embodiment and the integral preload disk 20 of the second embodiment is that the protrusion 53 of the integral preload disk 50 is convex upward from the upper surface of the support part 51 . That is, it can be formed to protrude (with a round surface in cross-section). Accordingly, except for the above-described differences, the integrated preload disk 50 according to the fifth embodiment is the same as the integrated preload disk 20 according to the second embodiment, and repeated description will be omitted below.

As shown in FIG. 8 , the protrusion 53 may be formed to convexly protrude upward from the upper surface of the support unit 51 without a side surface. Alternatively, according to an embodiment of the present invention, the protrusion 53 may protrude to a predetermined height h5 with a predetermined width w5 and a side surface from the upper surface of the support portion 51, and the projection 53 . The upper surface of the may be formed as a round surface rather than a flat surface (not shown). This may be selected according to the convenience of manufacturing and/or the convenience of equipment in producing the integral preload disc.

The support portions 11, 21, 31, 41, 51 and the protrusions 13, 23, 33, 43, 53) is integrally formed. The meaning that the support parts 11 , 21 , 31 , 41 , 51 and the protrusions 13 , 23 , 33 , 43 and 53 are integral means that the support parts 11 , 21 , 31 , 41 , 51 and the protrusions 13 , 23 , 33, 43, 53 are separate, respectively, and the coupling portion of the support portions 11, 21, 31, 41, 51 and the protrusions 13, 23, 33, 43, 53 is connected by welding or bonding. Rather, it means that the support portions 11, 21, 31, 41, 51 and the protrusions 13, 23, 33, 43, 53 are continuous as one without physical breakage.

The support portions 11, 21, 31, 41, 51 and the protrusions 13, 23, 33, 43, 53 of the integral preload disk 10, 20, 30, 40, 50 according to the embodiments of the present invention are It may be integrally formed through press working or the like.

In addition, the damper according to other embodiments of the present invention includes the integrated preload disks 10 , 20 , 30 , 40 , and 50 according to the embodiments of the present invention described above. Here, the damper may be a twin tube damper or a mono tube damper.

The integrated preload disk and the damper including the same according to the above-described embodiments of the present invention can reduce assembly tolerances of the protrusion and the support and manufacturing deviations due to welding by integrally forming the protrusion and the support, and also due to this It is possible to reduce the deviation of the damping force of the damper.

In addition, by implementing the shape of the integrated preload disk symmetrically or asymmetrically, the amount of bending of the upper disk can be partially adjusted according to the position of the protrusion, and the position of the part that can be easily opened and closed on the upper disk can be specified, and accordingly, the damper It is possible to control the damping force in the low speed section.

In addition, by using the integrated preload disk and the damper including the same according to embodiments of the present invention, it is possible to reduce the management cost and quality cost of the damper.

Features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiment has been mainly described in the above, this is only an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains to the above in the range that does not depart from the essential characteristics of the present embodiment. It will be appreciated that various modifications and applications not illustrated are possible. That is, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

10, 20, 30, 40, 50: integral preload disc
11, 21, 31, 41, 51: support
13, 23, 33, 43, 53: protrusions
15, 25, 35, 45, 55: Concourse

Claims (11)

An integral preload disc used in a damper, comprising:
The preload disk includes a support portion, a central hole and a protrusion,
The protrusion has a predetermined width from the upper surface of the support and protrudes to a predetermined height,
The integral preload disk, wherein the support and the protrusion are integrally formed. The method of claim 1,
The shape of the preload disk is, when the preload disk is arranged in the horizontal direction, the left and right sides are symmetrical with respect to the central axis in the longitudinal direction passing through the center point of the central hole, the integrated preload disk. 3. The method of claim 2,
The protrusion is formed continuously without breaking along the upper edge of the support part, the integral preload disk. 3. The method of claim 2,
The protrusion is formed at a position spaced apart from the upper surface edge of the support part by a predetermined distance in the direction of the central hole, the integrated preload disk. The method of claim 1,
The shape of the preload disk is, when the preload disk is arranged in the horizontal direction, left and right asymmetric with respect to the central axis in the longitudinal direction passing through the center point of the central hole, the integrated preload disk. 6. The method of claim 5,
Based on the central axis of the longitudinal direction passing through the central point of the central hole, the protrusion formed on the left side of the preload disk is formed at a position spaced a predetermined distance from the edge of the support part in the direction of the central hole, the right side of the preload disk The protrusion formed on the integral preload disk is formed on the edge of the support. 7. The method of claim 6,
The protrusion is formed continuously without breaking on the upper surface of the support part when looking down at the upper surface of the support part from above,
The integral preload disk, wherein the width and height of the continuously formed protrusions are the same. 7. The method of claim 6,
The protrusion is formed continuously without breaking on the upper surface of the support part when looking down at the upper surface of the support part from above,
The height of the continuously formed protrusion increases or decreases from the left to the right of the preload disk, the integral preload disk. 7. The method of claim 6,
A plurality of the protrusions are formed on the upper surface of the support part,
The shape of each of the plurality of projections is the same or different, the integral preload disk. 7. The method of claim 6,
The protrusion is formed continuously without breaking on the upper surface of the support part when looking down at the upper surface of the support part from above,
The integral preload disc, wherein the protrusion has a side surface and an upper surface of the protrusion is formed as a round surface, or the protrusion is formed to protrude upward from the upper surface of the support part. A damper comprising an integral preload disk according to any one of claims 1 to 10.

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