KR101776472B1 - Load response type air damper - Google Patents

Load response type air damper Download PDF

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Publication number
KR101776472B1
KR101776472B1 KR1020160032874A KR20160032874A KR101776472B1 KR 101776472 B1 KR101776472 B1 KR 101776472B1 KR 1020160032874 A KR1020160032874 A KR 1020160032874A KR 20160032874 A KR20160032874 A KR 20160032874A KR 101776472 B1 KR101776472 B1 KR 101776472B1
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KR
South Korea
Prior art keywords
piston
air
rubber
coupled
cylinder tube
Prior art date
Application number
KR1020160032874A
Other languages
Korean (ko)
Inventor
경규섭
임흥환
Original Assignee
주식회사 니프코코리아
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Application filed by 주식회사 니프코코리아 filed Critical 주식회사 니프코코리아
Priority to KR1020160032874A priority Critical patent/KR101776472B1/en
Application granted granted Critical
Publication of KR101776472B1 publication Critical patent/KR101776472B1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0218—Mono-tubular units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/0209—Telescopic
    • F16F9/0281—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
    • F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
    • F16F9/0472—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall characterised by comprising a damping device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
    • F16F9/32—Details
    • F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
    • F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fluid-Damping Devices (AREA)

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load-bearing type air damper, in which air introduced through an air moving hole is simultaneously supplied to the front and rear portions of a piston rubber at a uniform pressure so that a damping force is uniformly provided.
The present invention relates to a cylindrical cylinder tube (110) having a hollow shape; A rod guiding cap 120 coupled to one side of the cylinder tube 110; A sealing cap 130 coupled to the other side of the cylinder tube 110 to which the rod guide cap 120 is coupled; A piston 140 movably installed inside the cylinder tube 110 to which the sealing cap 130 is coupled; And a piston rod 150 which is moved in and out along the rod guide hole 121 formed in the rod guide cap 120 to the inside and outside of the cylinder tube 110 in accordance with the movement direction of the piston 140, A coupling portion 141 having an air passage 142 is formed on the other side of the piston 140 coupled to the piston rod 150. The coupling portion 141 has a plurality of A rubber piston 160 is formed at a predetermined interval in the longitudinal direction of the piston 140 and an air movement groove 161 is formed at a predetermined interval between the piston 140 and the rubber piston 160. At a rear portion of the rubber piston 160, The air damper 100 is provided with an unidirectional rubber valve 170. The air inlet groove 142a is formed by inserting the air passage 142 formed in the engaging portion 141 into an elastically deformable state, And the air inlet groove 142a, And the air movement hole 142b is formed in a slope along the longitudinal direction of the air intake hole 142a so that the gap between the air movement hole 142b and the air movement hole 142b is narrowed. And the rubber piston 160 is pushed into the engaging portion 141 while the rubber piston 160 is pressed so that the diameter of the engaging portion 141 is reduced.

Description

[0001] The present invention relates to a load response type air damper,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a load-response type air damper, and more particularly, to a load-response type air damper, in which air introduced through an air moving hole is simultaneously supplied to front and rear portions of a piston rubber at uniform pressure, To an air damper.

Generally, in a vehicle interior, there is provided a storage space for storing various accessories, a car-based part, and a receipt for gasoline.

The storage space includes a console box installed between the driver's seat and the passenger's seat, and a glove box provided on the front passenger's seat.

A damper is applied to the console box and the glove box so that instant operation is not performed when the lid is opened and closed. Hereinafter, a damper applied to the console box will be described in more detail.

The console box is housed in a space between a driver's seat and a front passenger seat so as to be able to receive small items and the like, and is made to be able to be fitted on a console forming a peripheral portion of a parking brake lever and a shift lever.

That is, the lower portion of the storage box having the storage space is made to be fit to the console, and the lid is coupled to the upper opening of the storage box so as to be openable and closable.

The lid is coupled to the housing through one side of the rotation shaft and rotates through the rotation shaft to open and close the housing.

The lid is equipped with a locking device to maintain the closed state.

The console box having such a structure has a problem that the user is liable to be injured because a shock sound is generated when the lid is opened and closed, and particularly, the lid is liable to be closed rapidly due to its own weight.

Therefore, the console box requires an air damper to reduce the speed when opening and closing the lid.

However, in the conventional air damper, a gap (GAP) occurs due to shrinkage deformation of a seal member due to a temperature change, and a sealing function is not realized due to a reduction in sealing effect.

In addition, since condensation due to inflow of cold air into the cylinder is anticipated, the conventional piston type air damper has a problem in that the manufacturing cost increases and the cost competitiveness decreases due to the oil injection due to the use of the oil sealing structure .

In order to solve such a problem, Korean Patent Application No. 10-2012-0124968 filed by the present applicant has proposed a structure in which an overlap support portion is movably installed in a sealing member on a piston rod of an air damper.

Therefore, when the piston is moved, the overlapped portion formed on the piston rod moves in the sealing member, the overlapping portion of the sealing member is directly supported when the piston is inserted, and the damping force is not controlled when the piston is withdrawn .

According to this structure, the sealing member is expanded and compressed by the direct support of the piston rod, so that the expansion pressure and the damping force can not be realized uniformly when the piston is moved.

That is, the shutoff valve with the spring operated according to the change of the internal pressure in the cylinder is applied to completely shut off the air flow.

Therefore, the expansion of the elastic member, which also serves as a seal, is hindered, which results in an increase in damper resistance and a decrease in load responsiveness.

In order to solve the above-mentioned conventional problems, the applicant of the present invention has proposed a method of controlling the air pressure in order to enable the expansion and contraction of the piston rubber by air pressure and to control the air holes formed in the piston The air damper has been developed and used, which enables equalization of expansion pressure and damping force.

However, in such a conventional multiple type air damper, since the fixed cap needs to be connected to the operating rod by a pin like a piston, there is a problem in that the number of parts is increased when the air damper is manufactured and the assembling property is lowered.

In addition, the complex air damper has a problem that the air introduced into the inlet groove is not simultaneously supplied to the front and rear portions of the piston rubber at a uniform pressure, so that the damping rate is not constant.

Korean Patent Application No. 10-2012-0124968 Korean Patent No. 10-1482456

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems described above and to provide a damping force control device for a damping device which is provided with a damping force by expanding and contracting a piston rubber by an air pressure in accordance with a moving direction of a piston coupled with a piston rod by a piston pin. And a load-response type air damper.

Another object of the present invention is to reduce the manufacturing cost of an air damper by eliminating the cost of damping factors such as oil, and to reduce the number of components in manufacturing the air damper, thereby improving the assemblability, A load-responsive air damper is provided.

The load-bearing type air damper (100) of the present invention comprises: a cylindrical cylinder tube (110) having a hollow shape; A rod guiding cap 120 coupled to one side of the cylinder tube 110; A sealing cap 130 coupled to the other side of the cylinder tube 110 to which the rod guide cap 120 is coupled; A piston 140 movably installed inside the cylinder tube 110 to which the sealing cap 130 is coupled; And a piston rod 150 which is moved in and out along the rod guide hole 121 formed in the rod guide cap 120 to the inside and outside of the cylinder tube 110 in accordance with the movement direction of the piston 140, A coupling portion 141 having an air passage 142 is formed on the other side of the piston 140 coupled to the piston rod 150. The coupling portion 141 has a plurality of A rubber piston 160 is formed at a predetermined interval in the longitudinal direction of the piston 140 and an air movement groove 161 is formed at a predetermined interval between the piston 140 and the rubber piston 160. At a rear portion of the rubber piston 160, The air damper 100 is provided with an unidirectional rubber valve 170. The air inlet groove 142a is formed by inserting the air passage 142 formed in the engaging portion 141 into an elastically deformable state, And the air inlet groove 142a, And the air movement hole 142b is formed in a slope along the longitudinal direction of the air intake hole 142a so that the gap between the air movement hole 142b and the air movement hole 142b is narrowed. And the rubber piston 160 is pushed into the engaging portion 141 while the rubber piston 160 is pressed so that the diameter of the engaging portion 141 is reduced.

delete

According to the present invention, the rubber piston is expanded and contracted by the air pressure generated in accordance with the moving direction of the piston, and uniform dangling force can be provided by the uniform expansion pressure.

In the meantime, according to the present invention, it is possible to reduce the manufacturing cost of the air damper by eliminating the damping factor costs of oil and the like, as well as to reduce the number of parts in manufacturing the air damper, It is a very useful invention with effect.

1 is an exploded perspective view showing the structure of a load-bearing type air damper of the present invention
2 is a longitudinal sectional view showing the load-bearing type air damper of the present invention
3 is an exploded perspective view showing a state in which a rubber piston is engaged with a piston of a load-
4 is a side view showing the piston of the load-bearing type air damper of the present invention
5 is an enlarged view showing a state in which the rubber piston of the load-responsive air damper of the present invention is in an expanded state
Fig. 6 is an enlarged view showing a state in which the rubber piston of the load-bearing type air damper according to the present invention is contracted

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a longitudinal sectional view showing a load-responsive air damper according to the present invention, and Fig. 3 is a longitudinal sectional view showing the structure of an air damper of a load- FIG. 4 is a side view showing a piston of a load-responsive air damper according to the present invention, and FIG. 5 is an enlarged view showing a state in which the rubber piston of the load- And FIG. 6 is an enlarged view showing a state in which the rubber piston of the load-responsive air damper according to the present invention is contracted.

As shown in Figs. 1 and 2, the load-bearing type air damper 100 of the present invention comprises: a cylindrical cylinder tube 110 having a hollow shape; A rod guiding cap 120 coupled to one side of the cylinder tube 110; A sealing cap 130 coupled to the other side of the cylinder tube 110 to which the rod guide cap 120 is coupled; A piston 140 movably installed inside the cylinder tube 110 to which the sealing cap 130 is coupled; The piston rod 150 is guided along the rod guide hole 121 formed in the rod guide cap 120 to the inside and outside of the cylinder tube 110 in accordance with the movement direction of the piston 140.

1 and 3, a coupling portion 141 having an air passage 142 is formed on the other side of the piston 140 coupled to the piston rod 150 at one side thereof, And a plurality of air movement grooves 161 are formed on the outer surface of the coupling portion 141 so as to be spaced apart from each other along a longitudinal direction of the rubber piston 160. The rubber piston 160, A one-directional rubber valve 170 is provided to change the movement path of the air in accordance with the moving direction of the piston 140.

3 and 4, the air passage 142 includes an air inlet groove 142a formed by being inserted into the coupling portion 141, and an air inlet groove 142a formed in the air inlet groove 142a, And an air movement hole 142b formed in a slope along the longitudinal direction of the part 141.

In the load-bearing type air damper 100 constructed as described above, the piston rod 150 is coupled to one side of the piston 140, and the other side coupling portion 141 of the piston 140 is connected to the outer side A plurality of air movement grooves 161 are formed at predetermined intervals along the longitudinal direction of the rubber piston 160.

At this time, the rubber piston 160 has a small diameter value of the engaging portion 141 in the direction of the air inlet groove 142a so that the distance between the air moving hole 142b and the air moving hole 142b, So that the installation is completed.

After the rubber piston 160 is installed as described above, the diameter of the engaging portion 141 is small in the direction of the air inlet groove 142a so that the distance between the air moving hole 142b and the air moving hole 142b is narrowed The installation is completed by pushing the one-way rubber valve 170 for changing the movement path of the air to the engaging portion 141 in a pressed state.

The piston rod 150 coupled to the piston 140 having the unidirectional rubber valve 170 mounted on the coupling portion 141 is fitted in the rod guide hole 121 of the rod guide cap 120, The rod guide cap 120 having the piston rod 150 inserted in the guide hole 121 is fixedly coupled to one side of the cylinder tube 110 and the rod guide cap 120 is fixed to one side of the cylinder tube 110, And the sealing cap 130 is coupled to the other side.

5, the unidirectional rubber valve 170 is configured such that the air located in the direction of the sealing cap 130 is compressed by the piston 140. In other words, when the piston rod 150 is operated in the compression direction as shown in FIG. 5, The piston 140 is moved in one direction so as to contact one side of the rubber piston 160 and at the same time the air inlet groove 142a formed in the coupling portion 141 of the piston 140 moves in the direction of the sealing cap 130 The compressed air having flowed into the air inlet groove 142a flows into the air movement hole 142b formed by slitting along the longitudinal direction of the coupling portion 141, The outer surface of the rubber piston 160 is compressed to the inner wall surface of the cylinder tube 110 to increase the contact pressure to control the damping speed.

At this time, the air having the same pressure moves to the front and rear portions of the air movement hole 142b, which is cut along the longitudinal direction of the coupling portion 141, Since the front and rear portions simultaneously receive uniform air pressure and are inflated, the contact pressure is more stably increased.

On the contrary, when the piston rod 150 acts in the direction of drawing out as shown in FIG. 6, the air pressure that inflated the rubber piston 160 is released, and the inner side wall of the cylinder tube 110 expands and contacts the outer side surface The air in the direction of the rod guide cap 120 is formed on the outer side of the rubber piston 160 along the longitudinal direction by shrinking the rubber piston 160 that is present in the rubber piston 160 and contracting the rubber piston 160 The one-directional rubber valve 170 is moved toward the other side so as to be spaced from the rubber piston 160 by the air pressure introduced into the air movement groove 161. [

At this time, the air introduced through the air movement groove 161b is guided to the engaging portion 141 of the piston 140 along the longitudinal direction at an interval generated between the rubber piston 160 and the one-way rubber valve 170 The air is moved in the direction of the sealing cap 130 while being sequentially introduced into the air movement hole 142b formed at the slope and the rear portion of the air inlet groove 142a.

100: Air damper
110: cylinder tube
120: Rod guide cap
121: Load guide ball
130: sealing cap
140: Piston
141:
142: air passage
142a: air inlet groove
142b: air moving hole
150: Piston rod
160: Rubber piston
161: air moving groove
170: One-way rubber valve

Claims (2)

A cylindrical cylinder tube 110 having a hollow shape; A rod guiding cap 120 coupled to one side of the cylinder tube 110; A sealing cap 130 coupled to the other side of the cylinder tube 110 to which the rod guide cap 120 is coupled; A piston 140 movably installed inside the cylinder tube 110 to which the sealing cap 130 is coupled; And a piston rod 150 which is moved in and out along the rod guide hole 121 formed in the rod guide cap 120 to the inside and outside of the cylinder tube 110 in accordance with the movement direction of the piston 140, A coupling portion 141 having an air passage 142 is formed on the other side of the piston 140 coupled to the piston rod 150. The coupling portion 141 has a plurality of A rubber piston 160 is formed at a predetermined interval in the longitudinal direction of the piston 140 and an air movement groove 161 is formed at a predetermined interval between the piston 140 and the rubber piston 160. At a rear portion of the rubber piston 160, The air damper 100 is provided with an unidirectional rubber valve 170. The air inlet groove 142a is formed by inserting the air passage 142 formed in the engaging portion 141 into an elastically deformable state, And the air inlet groove 142a, And the air movement hole 142b is formed in a slope along the longitudinal direction of the air intake hole 142a so that the gap between the air movement hole 142b and the air movement hole 142b is narrowed. Wherein the rubber piston (160) is installed by pushing the rubber piston (160) into the engaging portion (141) while pressing down the diameter of the engaging portion (141). delete
KR1020160032874A 2016-03-18 2016-03-18 Load response type air damper KR101776472B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020160032874A KR101776472B1 (en) 2016-03-18 2016-03-18 Load response type air damper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160032874A KR101776472B1 (en) 2016-03-18 2016-03-18 Load response type air damper

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KR101776472B1 true KR101776472B1 (en) 2017-09-07

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109484007A (en) * 2018-07-04 2019-03-19 重庆宏声印务有限责任公司 A kind of variable sleeve turned in offset printing process
CN111971489A (en) * 2018-03-28 2020-11-20 百乐仕株式会社 Damper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101373893B1 (en) 2012-11-06 2014-03-12 주식회사 니프코코리아 An air damper
KR101482456B1 (en) * 2013-12-06 2015-01-13 주식회사 니프코코리아 Mixed-type air damper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101373893B1 (en) 2012-11-06 2014-03-12 주식회사 니프코코리아 An air damper
KR101482456B1 (en) * 2013-12-06 2015-01-13 주식회사 니프코코리아 Mixed-type air damper

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111971489A (en) * 2018-03-28 2020-11-20 百乐仕株式会社 Damper
US20210062564A1 (en) * 2018-03-28 2021-03-04 Piolax, Inc. Damper
US11459812B2 (en) * 2018-03-28 2022-10-04 Piolax, Inc. Damper
CN111971489B (en) * 2018-03-28 2023-03-28 百乐仕株式会社 Damper
CN109484007A (en) * 2018-07-04 2019-03-19 重庆宏声印务有限责任公司 A kind of variable sleeve turned in offset printing process
CN109484007B (en) * 2018-07-04 2021-01-29 重庆宏声印务有限责任公司 Variable sleeve in offset printing process

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