KR20160036455A - Damper - Google Patents

Abstract

The present invention relates to a vibration absorbing damper. The vibration absorbing damper comprises: a coil spring; a lower housing having a hollow column shape of which an upper end part is opened, and storing a lower portion of the coil spring therein; a lower support body installed on an inner floor of the lower housing to support a lower end of the coil spring; an upper housing having the hollow column shape of which a lower end part is opened, storing an upper portion of the coil spring therein, and covering the lower housing in the upper portion of the lower housing; and an upper support body stored inside the upper housing and supporting an upper end of the coil spring. The present invention is installed in a short period of time, is easily applied to various and wide load ranges, effectively removes an asymmetric load occurring in a point-of-use, and controls horizontality.

Description

Vibration Absorption Damper {DAMPER}

The present invention relates to a damper, and more particularly, to a vibration-absorbing damper which is installed in equipment such as an optical microscope that requires precise measurement to absorb vibration.

In general, vibrations are widely present in everyday life, from large earthquakes that cause human casualties to nanoscale vibration that affects atomic microscopes, and even fine vibrations affect precision measurement or observations.

Accordingly, in order to obtain accurate results through precise measurement or observation, various vibration suppression devices for removing vibration (including absorption or offset) are produced and sold in various ways.

However, many of these vibration damping devices are complicated in structure and mostly expensive because they use air pressure or remove vibration by using an actuator of an electronic device.

It is produced and sold by simple mechanical vibration using spring mechanism. However, buckling phenomenon of spring occurs or vibration direction is not constant, so it is not effective vibration damping, but also used for optical microscope, electronic scale, vibration damping table A separate frame structure or a mechanical component is required for installation and installation.

Patent Literature 1 discloses a vibration damping structure in which the lower plate is suspended by three or more links with respect to a fixing table and these links are acted as pendulum to reduce the natural frequency in the horizontal direction, Device is disclosed.

Patent Document 2 discloses a technique of reducing the natural frequency of a coil spring by changing the amount of compression of the top portion of the viscoelastic body to reduce the resonance frequency of the resonance, which is set by combination with the viscoelastic body, A vibration damping device for adjusting a frequency is disclosed.

In the vibration damping device according to Patent Document 1, since the horizontal vibration is suppressed by using the link, the structure is complicated.

Further, in the vibration damping device according to Patent Document 2, since the resonance frequency is adjusted at the installation site of the vibration damping device, the installation work at the installation site is complicated.

JPP2000-161433E JPP3543758 B2

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide an apparatus and a method for mounting the apparatus in a short time, And the like can be effectively solved.

Another object of the present invention is to provide a vibration-absorbing damper which is capable of removing vibration without the need for means such as air pressure or electricity when performing precise measurement and observation.

It is still another object of the present invention to provide a vibration absorbing damper capable of precisely measuring and observing through the present invention by making it possible to maintain a horizontal position even in a non-flat state.

Still another object of the present invention is to provide a vibration absorbing damper that prevents a buckling phenomenon of a spring.

In order to achieve the above object, the vibration-absorbing damper according to the first embodiment of the present invention includes a coil spring and a hollow columnar shape having an upper end opened, A lower support provided on a bottom of the lower housing to support a lower end of the coil spring; a lower support having a lower end opened in a hollow pillar shape, an upper portion of the coil spring housed in the lower portion, An upper housing for covering the lower housing, and an upper support accommodated in the upper housing and supporting an upper end of the coil spring.

In the vibration-absorbing damper according to the first embodiment of the present invention, the lower flange protrudes outward from the outer circumferential surface of the upper end of the lower housing to form a step.

In the vibration absorbing damper according to the first embodiment of the present invention, the step may be formed as a tapered inclined curved surface from the lower end of the lower flange to the outer circumferential surface of the lower housing.

The vibration absorption damper according to the first embodiment of the present invention may further include a non-slip member provided on a lower surface of the lower housing.

The vibration damping damper according to the present invention may include a lower suspension portion protruding from the upper surface of the lower support and inserted into the lower side of the coil spring.

In the vibration-absorbing damper according to the first embodiment of the present invention, the lower support and the lower pedestal may be formed of engineering plastic or fiber-reinforced plastic.

In the vibration-absorbing damper according to the first embodiment of the present invention, the upper flange may protrude outward from the outer peripheral surface of the lower end of the upper housing.

In the vibration-absorbing damper according to the first embodiment of the present invention, a thread may be formed on the outer circumferential surface of the upper housing.

In the vibration-absorbing damper according to the first embodiment of the present invention, the upper support may further include an upper pedestal portion to be inserted into the upper side of the coil spring.

In the vibration-absorbing damper according to the first embodiment of the present invention, the upper support and the upper support portion may be formed of engineering plastic or fiber-reinforced plastic.

In the vibration-absorbing damper according to the first embodiment of the present invention, a plurality of fixing pieces may be provided on the lower surface of the upper flange.

In the vibration-absorbing damper according to the first embodiment of the present invention, the inner ends of the plurality of fixing pieces facing the lower housing may be arc-shaped.

In the vibration-absorbing damper according to the first embodiment of the present invention, the radius of curvature of the inner end of the plurality of fixing pieces may have a value between the radius of curvature of the outer circumferential surface of the lower housing and the radius of curvature of the lower flange.

In the vibration-absorbing damper according to the first embodiment of the present invention, a conical concave depression is formed in the ceiling of the upper housing, and a conical convex portion is protruded on the upper portion of the upper support at an angle narrower than the apex angle of the concave portion, The convex portion is inserted into the concave portion, and a contact point can be formed at each vertex.

In the vibration absorbing damper according to the first embodiment of the present invention, a conical convex portion protrudes downward from the ceiling of the upper housing, and a conical concave portion is formed on the upper surface of the upper support body at an angle wider than the apex angle of the convex portion , The convex portion is inserted into the concave portion, and a contact point can be formed at each vertex.

In the vibration-absorbing damper according to the first embodiment of the present invention, at least one of the concave portion and the convex portion may be heat-treated or surface-treated.

According to another aspect of the present invention, there is provided a vibration-absorbing damper including a coil spring, a hollow columnar body having an upper end opened, a lower portion of the coil spring housed therein, A coil spring mounting groove formed in the lower housing and having an upper end opened and a lower portion of the coil spring inserted and supported therein, An upper housing having a hollow pillar shape with a lower end opened and housing an upper portion of the coil spring inside the lower housing and covering the lower housing at an upper portion of the lower housing; A lower end of the coil spring and a lower end of the coil spring, And an upper support having an upper bearing portion formed in the guide hole and slidably inserted therein.

In the vibration absorbing damper according to the second embodiment of the present invention, a conical recessed portion is formed in the ceiling of the upper housing, and a conical convex portion is protruded on the upper portion of the upper support body at an angle narrower than the apex angle of the concave portion, The convex portion is inserted into the concave portion, and a contact point can be formed at each vertex.

In the vibration absorbing damper according to the second embodiment of the present invention, a conical convex portion protrudes downward from the ceiling of the upper housing, and a conical concave portion is formed on the upper surface of the upper support body at an angle wider than the apex angle of the convex portion , The convex portion is inserted into the concave portion, and a contact point can be formed at each vertex.

The present invention can be installed within a short time, can be easily applied to a wide and wide load range, and effectively solves problems such as deflecting load and horizontal adjustment occurring at the site of use.

In addition, the present invention enables vibrations to be removed without the need for means such as air pressure or electricity when performing precise measurement and observations, and to enable horizontal maintenance through the present invention even in a low-cost, Precise measurement and observation are possible.

Further, the present invention prevents buckling of the spring due to the load of the object observing machine, thereby enabling more precise measurement and observation.

1 is a perspective view of a vibration-absorbing damper according to a first embodiment of the present invention;
FIGS. 2A and 2B and FIGS. 3A and 3B are longitudinal sectional views of a vibration-absorbing damper according to a first embodiment of the present invention. FIG.
Fig. 4 is a state in which the vibration-absorbing damper according to the first embodiment of the present invention is in use. Fig.
5A to 5D are views showing a state in which a vibration-absorbing damper according to a first embodiment of the present invention is fitted in various support plates.
6 is a perspective view of a vibration-absorbing damper according to a second embodiment of the present invention;

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

≪ Embodiment 1 >

1 to 3, a vibration-absorbing damper 10 according to a first embodiment of the present invention includes a coil spring 100, a lower housing 200, a lower support 300, an upper housing 400, And a support 500.

The coil spring 100 is preferably a compression coil spring.

The lower housing 200 has a hollow columnar shape with an opened upper end, and a lower portion of the coil spring 100 is received therein.

It is preferable that the lower flange 210 protrudes outward from the upper outer circumferential surface of the lower housing 200 and the outer circumferential surface of the lower housing 200 and the lower flange 210 form a step, And an inclined curved surface 211 tapered downward from the lower end of the flange 210 to the outer circumferential surface of the lower housing 200.

Although it is not shown in the drawing, it is preferable to further include a non-slip member on the bottom surface of the lower housing 200.

The non-slip member may be a commercially available suction plate widely used in the market, and various types or materials capable of preventing slippage may be used, and the kind of the non-slip member is not limited.

The lower support 300 may be installed on the bottom of the lower housing 200 to support the lower end of the coil spring 100 and the lower support 300 may be integrally formed with the lower housing 200, And the lower housing 200 may be coupled to each other by separate coupling means in a state that they are separated from each other.

A lower bearing recess 310 protrudes upward from an upper portion of the lower support 300. The lower bearing recess 310 is inserted into a lower side of the coil spring 100 to support and support the coil spring 100, 100 from buckling.

The movement of the coil spring 100 is restricted because the lower bearing recess 310 is inserted into the lower side of the coil spring 100 by a predetermined height and the outer peripheral surface of the lower bearing recess 310 is in contact with the coil spring 100.

As shown in the drawing, the lower bearing block 310 may be integrally formed with the lower support 300, or may be coupled by a coupling means in a separated state.

The lower support 300 and the lower support 310 are preferably formed of engineering plastics or fiber reinforced plastic (FRP), but they may be formed of an elastic material such as urethane or rubber. Not limited.

The above-mentioned engineering plastic is a high-strength plastic used as a summary industrial material or a structural material. It is stronger than steel, rich in malleability than aluminum, stronger in chemical resistance than gold and silver, Is a resin having a polymer structure having a temperature of 100 ° C or more, a strength of 49 MPa or more, and a bending elastic modulus of 2.4 kPa or more.

Therefore, engineering plastics are not only excellent in strength and elasticity but also excellent in impact resistance, abrasion resistance, heat resistance, cold resistance, chemical resistance and electrical insulation. In addition, ordinary plastics are characterized by their insulating properties, and engineering plastics can be made conductive according to the molecular assembly method.

On the other hand, fiber reinforced plastics obtained by mixing engineering plastics with glass fibers or carbon fibers exhibit stronger characteristics.

The upper housing 400 has a hollow cylindrical shape with a lower end opened and accommodates the upper portion of the coil spring 100 on the inner side and covers the lower housing 200 on the upper portion of the lower housing 200.

An upper flange 410 protrudes outwardly from an outer circumferential surface of a lower end of the upper housing 400 and a thread 420 is formed on an outer circumferential surface of the upper housing 400.

4, when the upper housing 400 is coupled with the support plate 1, the lower surface of the support plate 1 faces the upper surface of the upper flange 410, and the lower surface of the support plate 1 and the upper flange 410 The upper flange 410 serves as a stopper for preventing the support plate 1 from descending downward.

A plurality of fixing pieces 411 are provided on the lower surface of the upper flange 410. Bolts 412 penetrate upward from below the fixing pieces 411 and are provided with through holes It is preferable that the plurality of fixing pieces 411 are fixed to the upper flange 410. However, the installation method thereof can be variously changed according to the user's choice and is not particularly limited thereto.

The radius of curvature of the inner ends of the plurality of fixing pieces 411 is preferably equal to a radius of curvature of the lower housing 200 and a radius of curvature of the lower flange 210, and the plurality of fixing pieces 411 are provided at a position corresponding to the position where the step is formed, that is, the position of the inclined curved surface 211 when the present invention is placed on the horizontal plane do.

The lower housing 200 and the upper housing 400 are prevented from being separated from each other while the fixing piece 411 is installed on the upper housing 400 and the lower housing 200 The upper housing 400 is detachable.

It is also preferable that the fixing piece 411 abuts on the inclined curved surface 211.

Since the coil spring 100 is not pressed by the load of the upper housing 400 and the upper support 500 but is pressed against the coil spring 100 and the fixed piece 411 and the inclined curved surface 211 are in contact with each other, Or the buckling of the coil spring 100 can be prevented.

The fixing member 411 is preferably made of metal, but it can be formed of plastic according to the user's choice and can be formed of various materials.

4 to 5, the upper housing 400 is inserted into a through hole (not shown) formed in the support plates 1, 2, 3, 4 and 5, 3, 4, 5 (a), 5 (b), and 5 (c) by means of a screw thread 420 formed on the outer circumferential surface of the upper housing 400 when the upper housing 400 is rotated clockwise or counter- ) Is moved up and down, it is easy to align the horizontal direction.

5A shows a state in which the support plate 2 is placed on the upper part of the upper housing 400. In this case, the support plate 2 and the upper housing 400 are connected to separate coupling means Can be combined.

 5 (b) to 5 (d) show a state in which the support plates 3, 4, 5 and the upper housing 400 are coupled by separate brackets 20, 4 and 5 are inserted into the upper housing 400 and are directly coupled to each other. The bracket 20 can be installed or removed according to the user's selection.

The upper support 500 is received in the upper housing 400 and supports the upper end of the coil spring 100.

The upper support body 500 may include an upper support rod portion 510 inserted into the upper side of the coil spring 100. The upper support rod portion 510 may be integrally formed with the upper support body 500 , And may be coupled to each other in a separated state by coupling means.

1 to 3, the upper bearing recessed portion 510 is inserted into the upper side of the coil spring 100 by a predetermined height so that the upper side of the coil spring 100 and the outer peripheral side of the upper bearing recessed portion 510 The movement of the coil spring 100 is restricted.

The upper support 500 and the upper support part 510 are preferably formed of engineering plastics or fiber reinforced plastics, but are not limited thereto.

A conical concave portion 430 is formed on the ceiling of the upper housing 400 and a conical convex portion 520 is formed on the upper portion of the upper support 500 at an angle narrower than the apex angle of the concave portion 430 upward So that the convex portion 520 is inserted into the concave portion 430 and forms a contact at each vertex.

A conical convex portion 440 protrudes downward on the ceiling of the upper housing 400 and a conical concave portion 530 is formed on the upper surface of the upper support 500 at a wider angle than the apex angle of the convex portion 440 So that the convex portion 440 is inserted into the concave portion 530 and forms a contact at each vertex.

The concave portions 430 and 530 and the convex portions 440 and 520 may be formed of engineering plastic or fiber reinforced plastic or the like. Alternatively, the concave portions 430 and 530 and the convex portions 440 and 520 may be made of a metal material, It is necessary to provide durability so as to prevent wear of the contact point and therefore at least one of the concave portions 430 and 530 and the convex portions 440 and 520 mentioned above Is preferably heat-treated or surface-treated.

If equipment for measurement or observation is placed on the support plates 1, 2, 3, 4, 5 provided with the present invention, it is natural that the present invention is inclined.

However, when the coil spring 100 is buckled, the vibration absorption is not smooth. Therefore, the coil spring 100 is formed by the lower and upper bearing recesses 310 and 510, respectively, Even if the present invention is inclined by the weight of the measuring equipment or observation equipment, it is possible to prevent the buckling of the spring 100 and prevent the vibration from vertically moving through the point contact between the inner ceiling of the upper housing 400 and the upper support 500, So that the vibration is absorbed by the coil spring 100. In this case,

The vibration-absorbing damper according to the present invention as described above is assembled and used as follows.

First, the lower support 300 is installed on the upper surface of the bottom of the lower housing 200, which has a hollow column shape with the top opened, and the non-skid member 220 is installed on the bottom surface

The lower flange 210 protrudes outward from the upper outer circumferential surface of the lower housing 200 and the lower flange 210 forms a step with the outer circumferential surface of the lower housing 200, It is preferable that the outer circumferential surface of the lower housing 200 is formed of an inclined curved surface 211 tapered downward.

The lower support recess 300 is formed in the lower end of the lower support 300 so that the lower support recess 310 protrudes upward from the upper surface of the lower support 300 by a predetermined height. .

At this time, the lower inner side of the coil spring 100 and the outer peripheral surface of the lower bearing recess 310 are in contact with each other, and the coil spring 100 is prevented from moving and tilting.

An upper bearing recess 510 protruding downward from the lower surface of the upper support 500 by a predetermined height is inserted into the upper end of the coil spring 100.

At this time, the upper inner side of the coil spring 100 and the outer peripheral side of the upper bearing recessed portion 510 are in contact with each other, and the coil spring 100 is prevented from being moved and tilted.

The upper and lower supports 400 and 500 of the coil spring 100 cover the upper and lower housings 400 and 400. The upper and lower housings 400 and 400 cover the lower housing 200, Respectively.

The upper housing 400 is formed to have a larger diameter than the lower flange 210 of the lower housing 200 and an upper flange 410 protruding outward is formed on the lower outer peripheral surface of the upper housing 400, And a screw thread 420 is formed on the outer circumferential surface of the upper housing 400.

A plurality of fixing pieces 411 are provided on the lower surface of the upper flange 410. A through hole is formed in the fixing piece 411 and a through hole It is preferable that the groove corresponding to the hole is formed and screwed by the bolt 412, but the fixing member 411 may be provided on the lower surface of the upper flange 410 in other ways (for example, , Adhesion, or the like).

The plurality of fixing pieces 411 are arranged in an arc shape in which an inner end portion of the lower housing 200 facing the inclined curved surface 211 has a value between a radius of curvature of the lower housing 200 and a radius of curvature of the lower flange 210, So that the end portion faces the inclined curved surface 211.

Accordingly, the plurality of fixing pieces 411 are located at a height corresponding to the inclined curved surface 211 and prevent the lower housing 200 and the upper housing 400 from being separated from each other.

A concave portion 430 having a concave cone shape is formed on the ceiling of the upper housing 400 and a convex portion 520 having a smaller apex angle than the concave portion 430 is provided on the upper surface of the upper support body 500, The portion 430 and the convex portion 520 form a contact point at each vertex.

Therefore, even if the present invention is inclined, the concave portion 430 and the convex portion 520 make point contact at each vertex, so that the coil spring 100 transmits vibration in the vertical direction through the contact, Absorbed.

A convex portion 440 convex in the form of a cone is formed downward on the ceiling of the upper housing 400 and a concave portion 530 having a vertex angle larger than that of the convex portion 440 is provided on the upper surface of the upper support 500, It is also possible that the portion 440 is inserted into the concave portion 530.

Next, the upper housing 400 is inserted upwardly from the lower side into the through holes (not designated by reference numerals) formed in the support plates 1, 3, 4 and 5.

Since the through holes of the support plates 1, 3, 4 and 5 are formed corresponding to the threads 420 of the upper housing 400, the support plates 1, 3, 4, 5 and the upper housing 400 are screw- Therefore, it is possible to adjust the height of the support plates 1, 3, 4, 5 through the rotation of the upper housing 400 even on the floor, not horizontal, so that the support plate can be leveled.

If vibration or vibration is absorbed by the vibration-absorbing damper 10 according to the present invention, measurement or observation is performed by placing equipment for measurement or observation on the support plates 1, 2, 3, 4 and 5, Measurements or observations may be made.

When the equipment for measurement or observation is placed on the support plates 1, 2, 3, 4 and 5, the load is applied to the upper housing 400 to compress the coil spring 100 downward, The slope 411 is lowered to the outer surface of the lower housing 200 rather than the inclined curved surface 211.

When the upper housing 400 is tilted by the load of the equipment, a part of the plurality of fixing pieces 411 is brought into contact with the lower housing 200 due to the point contact between the recesses 430 and 530 and the convex portions 440 and 520, The fixing member 411 contacting the outer surface of the lower housing 200 or the curved surface 211 of the lower housing 200 is pressed against the outer surface or the inclined curved surface 211 of the lower housing 200 to prevent the upper housing 400 from further tilting, 530 and the fixing portions 411 facing each other as far as the lower ends of the convex portions 440, 520 are lowered.

Even if the equipment for measurement or observation is concentrated on one of the support plates 1, 2, 3, 4 and 5, the concave portions 430 and 530 and the convex portions 440 and 520 make point contact, Since the vibration is transmitted in the vertical direction, the modulus of elasticity of the coil spring 100 is kept constant, and effective vibration absorption is possible.

≪ Embodiment 2 >

In the second embodiment according to the present invention, the same elements as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.

Referring to FIG. 6, a second embodiment of the present invention includes a coil spring 100, a lower housing 200 in which a lower portion of the coil spring 100 is accommodated, A coil spring mounting groove 320 is formed in the lower housing 200 and has an upper opening and a lower portion of the coil spring 100 is inserted and supported. A lower support 300 having a guide hole 330 penetrating in the longitudinal direction of the lower housing 200 and a lower end supporting the upper end of the lower end of the coil spring 100, An upper housing 400 that covers the lower housing 200 from above and an upper housing 400 that is received in the upper housing 400 and supports the upper end of the coil spring 100, And the guide holes 330 of the lower support 300 And an upper support having an upper bearing recess 510 inserted therein.

In the second embodiment, since the coil spring mounting groove 320 having the upper end of the lower support 300 is formed and the guide hole 330 is formed downward from the bottom of the coil spring mounting groove 320, There is a difference.

The upper support shaft portion 510 protruded downward from the upper support body 500 extends downward and penetrates the inside of the coil spring 100 and is inserted into the guide hole 330 formed in the lower support body 300, The upper bearing recess 510 is supported by the guide hole 330 and the coil spring 100 is supported by the upper bearing recess 510 to prevent the coil spring 100 from buckling.

In the second embodiment, the concave portion 430 having a conical shape is formed in the ceiling of the upper housing 400 as in the first embodiment, and the concave portion 430 is formed on the upper portion of the upper support 500, The convex portion 520 protrudes upward at an angle so that the convex portion 520 is inserted into the concave portion 430 and the contact point can be established at each vertex.

A conical convex portion 440 protrudes downward on the ceiling of the upper housing 400 and a conical concave portion 530 is formed on the upper surface of the upper support 500 at a wider angle than the apex angle of the convex portion 440 So that the convex portion 440 is inserted into the concave portion 530, and a contact point can be formed at each vertex.

It is to be understood that the present invention is not limited to the above-described embodiment, and that various changes and modifications will be apparent to those skilled in the art without departing from the scope of the present invention, It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

1, 2, 3, 4, 5: Support plate 10: Vibration absorption damper
20: Bracket
100: coil spring 200: lower housing
210: lower flange 211: inclined curved surface
220: nonslip member 300: lower support
310: lower supporting hole portion 320: coil spring mounting groove
330: guide hole 400: upper housing
410: upper flange 411:
412: Bolt 420: Threaded
430: oblique portion 440: convex portion
500: upper support 510: upper support recess
520: convex portion 530: concave portion

Claims (19)

A coil spring,
A lower housing in which a lower portion of the coil spring is received,
A lower support installed on a bottom of the lower housing to support a lower end of the coil spring,
An upper housing for housing the upper portion of the coil spring on an inner side and covering the lower housing on an upper portion of the lower housing,
And an upper support accommodated in the upper housing and supporting an upper end of the coil spring.
The method according to claim 1,
And a lower flange protrudes outwardly from the upper outer peripheral surface of the lower housing to form a step.
3. The method of claim 2,
Wherein the stepped portion is formed in a tapered inclined curved surface from a lower end of the lower flange to an outer peripheral surface of the lower housing.
The vibration-damping damper according to claim 1, further comprising a non-slip member installed on a lower surface of the lower housing.
The method according to claim 1,
And a lower support portion protruding upward from an upper surface of the lower support and inserted into a lower side of the coil spring.
The vibration-absorbing damper according to claim 5, wherein the lower support and the lower pedestal are formed of engineering plastic or fiber-reinforced plastic.
The method according to claim 1,
And an upper flange protrudes outward from an outer peripheral surface of a lower end of the upper housing.
The vibration-absorbing damper of claim 1, wherein a thread is formed on an outer circumferential surface of the upper housing.
The method according to claim 1,
Further comprising an upper support hole portion projecting downward from a lower surface of the upper support and inserted into an upper side of the coil spring.
The vibration-absorbing damper according to claim 9, wherein the upper support and the upper support are formed of engineering plastic or fiber-reinforced plastic.
The vibration-absorbing damper according to claim 7, wherein a plurality of fixing pieces are provided on a lower surface of the upper flange.
12. The vibration-damping damper according to claim 11, wherein the plurality of fixing pieces have an inner end directed toward the lower housing.
The vibration damping damper according to claim 12, wherein a radius of curvature of an inner end of the plurality of fixing pieces has a value between a radius of curvature of the outer circumferential surface of the lower housing and a radius of curvature of the lower flange.
The method according to claim 1,
A concave concave portion is formed in the ceiling of the upper housing,
A conical convex portion is protruded on the upper portion of the upper support at an angle narrower than the apex angle of the concave portion,
And the convex portion is inserted into the concave portion, the vibration absorbing damper forming a contact at each vertex.
The method according to claim 1,
A conical convex portion protruding downward from the ceiling of the upper housing,
A conical recess is formed on the upper surface of the upper support at an angle wider than the apex angle of the convex portion,
And the convex portion is inserted into the concave portion, the vibration absorbing damper forming a contact at each vertex.
16. The method according to claim 14 or 15,
Wherein at least one of the concave portion and the convex portion is subjected to heat treatment or surface treatment.
A coil spring,
A lower housing in which a lower portion of the coil spring is received,
A coil spring mounting groove formed inside the lower housing and having an upper end opened and supported by a lower portion of the coil spring, and a lower support having a guide hole penetrating through the coil spring mounting groove in the longitudinal direction, Wow,
An upper housing for housing the upper portion of the coil spring on an inner side and covering the lower housing on an upper portion of the lower housing,
And an upper support body which is accommodated in the upper housing and which supports the upper end of the coil spring and penetrates the inside of the coil spring to project downward and is inserted into the guide hole of the lower support and slides Vibration absorbing damper.
18. The method of claim 17,
A concave concave portion is formed in the ceiling of the upper housing,
A conical convex portion is protruded on the upper portion of the upper support at an angle narrower than the apex angle of the concave portion,
And the convex portion is inserted into the concave portion, the vibration absorbing damper forming a contact at each vertex.
18. The method of claim 17,
A conical convex portion protruding downward from the ceiling of the upper housing,
A conical recess is formed on the upper surface of the upper support at an angle wider than the apex angle of the convex portion,
And the convex portion is inserted into the concave portion, the vibration absorbing damper forming a contact at each vertex.

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