KR101442186B1 - A door damping apparatus - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door shock absorber which is installed in a furniture such as a sink or a wardrobe to buffer the door and can realize a stable operation while being manufactured in a simple structure.
The configuration of the present invention includes a cylinder 100 having a fluid chamber 110 for receiving a fluid and reciprocating through the fluid chamber 110 and passing through the closure member 250 and the volume correction means 260 A door shock absorber comprising a piston (200) returned by a spring (210), and a valve (300) mounted on one end of the piston (200) and reciprocating within the cylinder (100) A piston fixing groove 310 in which the piston 200 is inserted and fixed is formed at one central portion of the valve 300 and a protrusion 320 protruding at a predetermined length is formed at the other central portion of the valve 300, The support protrusions 330 are formed at regular intervals to form an O-ring insertion groove 332 by providing a space between the valve 300 and the other side of the spring 210 on one side of the outer circumferential surface of the O- The valve 300 is provided at its outer circumferential surface with a predetermined distance therebetween, A fluid guide protrusion 340 is formed so as to form a path 342 and the valve 300 is inserted into the fluid chamber 110 from one side to the other side so that fluid contained in the fluid chamber 110 is fluid A fluid shutoff ring 400 is installed in the O-ring insertion groove 332 so that one side thereof closes the fluid transfer hole 350 and an outer circumferential surface thereof is in close contact with an inner circumferential surface of the cylinder 100 And when a load is applied to the piston 200 due to the door closing operation, fluid contained in the fluid chamber 110 is forced to open the fluid blocking ring 400 to open the fluid moving hole 350 .

Description

[0001] The present invention relates to a door damping apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door shock absorber which is installed in a furniture such as a sink or a wardrobe to buffer the door and can realize a stable operation while being manufactured in a simple structure.

Generally, a furniture door hinge is mounted on an inner wall of a furniture such as a sink or a wardrobe and is used as a door opening / closing means. The door hinge absorbs an external load generated by the door closing process to minimize noise, A damper is mounted as a means for extending the damper.

Therefore, by mounting a shock absorber (damper) having buffer means in the opening / closing path of the door, the impact noise generated in the closing process of the door is minimized, so that a quiet indoor atmosphere can be produced and various stability Thereby extending the service life of the furniture wall and the door.

As an example of a shock absorber, Patent Registration No. 760518 is published. 1, a pair of check valves 60 and an auxiliary valve 70 are mounted on the projecting protrusion 50 of the valve 40 so that various loads generated during the closing process of the furniture door When the load is applied to the piston 20, the check valve 60 and the auxiliary valve 70 move along the projecting projection 50, The door is buffered in a process of sequentially passing through the groove 51, the oil path 47, and the clearance 41.

In the shock absorber 1, when a strong external load is applied to the piston in the closing process of the door, the oil in the cylinder flows into the oil groove 51 of the projecting projection 50 and the peripheral surface of the valve 40 The buffering efficiency of the door deteriorates.

At this time, the shock absorber 1 can move the oil substantially only in a limited section where the check valve 60 is located except for the moving space of the valve 40 when an external load is applied to the piston 20 The load of the door can not be absorbed smoothly.

In addition, when the load applied to the piston is released and the piston 20 returns, the returning process is delayed because the weight of the check valve 60 is heavy, so that the elastic force of the spring 30 received in the cylinder must be increased There is a problem.

Patent Document 1: Registration No. 0760518 (Sep. 14, 2007, Closed shock absorber of a door for furniture) Patent Document 2: Japanese Laid-Open Patent Publication No. 2012-0052696 (2012.05.24, Hinge Damper for Furniture Door with Increased Operating Force) Patent Document 3: Japanese Patent Application Laid-Open No. 2006-0061891 (2006.06.08, Closed shock absorber for furniture doors)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a compressor having a simple structure to greatly reduce cost, minimize noise generated during a piston inlet / And to provide a door shock absorber capable of precisely performing buffering action through accurate fluid flow.

In order to accomplish the above object, the present invention provides a fluid supply apparatus including a cylinder 100 having a fluid chamber 110 for receiving a fluid, a cylinder 100 accommodated in the fluid chamber 110 and having a closure member 250 and a volume correction means 260 And a valve 300 mounted on one end of the piston 200 and reciprocating within the cylinder 100. The valve 200 is provided with a door 200, A piston fixing groove 310 in which the piston 200 is inserted and fixed is formed at a center of one side of the valve 300 and a protrusion 320 protruding at a predetermined length is formed at the other central portion of the valve 300 The spring 210 is hooked on one side of the protrusion 320 and the other side is provided with a space between the valve 300 and the support protrusion 330 so as to form an O- And the valve 300 is formed at a predetermined interval A fluid guide protrusion 340 is formed so as to protrude from the fluid chamber 110 to form a fluid path 342 therebetween and the fluid contained in the fluid chamber 110 passes through the valve 300 from one side to the other side, The fluid transfer hole 350 is formed in the O-ring insertion groove 332 so that one side thereof closes the fluid transfer hole 350 and the outer circumferential surface thereof is in close contact with the inner circumferential surface of the cylinder 100, When a load is applied to the piston 200 due to the closing operation of the door, the fluid contained in the fluid chamber 110 forcibly opens the fluid blocking ring 400, And the hole 350 is opened and moved.

The fluid transfer hole 350 is partially connected to a part of the edge of the piston fixing groove 310 to communicate with the piston fixing groove 310.

A space forming protrusion 322 is formed on the outer circumferential surface of one side of the protrusion 320 where the O-ring insertion groove 332 is formed to form a pressurizing space 323 between the protrusion 320 and the fluid blocking ring 400 .

A fluid guiding groove 325 is formed along the longitudinal direction of the protrusion 320 so as to guide the fluid to the pressurizing space 323 on the outer circumferential surface of the protrusion 320 where the supporting protrusion 330 is not formed .

The outer circumferential surface of the valve 300 is formed as an inclined surface 301 so as to be extended toward a portion where the fluid blocking ring 400 is installed to guide the fluid to the outer circumferential surface of the fluid blocking ring 400 while increasing the velocity of the fluid When the piston 200 is returned, the fluid forcibly slips the fluid blocking ring 400 to form a gap between the fluid blocking ring 400 and the cylinder 100, and moves through the gap.

The volume correcting means 260 includes a moving block 262 penetrating the piston 200 and provided with a packing 263 facing one side of the valve 300 and a moving block 262 supported by the closing member 250 And an elastic spring 264 for applying an elastic force to the moving block 262 to push the moving block 262 toward the valve 300.

According to the door shock absorber having the above-described structure, the structure is simple, the manufacturing cost is reduced, and the reliability of the product is improved by stable operation.

1 is a cross-sectional view of a conventional door shock absorber,
2 is an exploded perspective view of the door shock absorber according to the present invention,
Fig. 3 is a perspective view of the valve of Fig. 2 viewed from the opposite side,
FIG. 4A is a cross-sectional view taken along line AA of FIG. 3,
FIG. 4B is a sectional view taken along line BB of FIG. 3,
5 is a cross-sectional view of a door shock absorber according to the present invention.
FIG. 6 is a state in which a load is applied to the piston of the door cushioning device according to the present invention,
7 is a view showing a state in which a load is released from a piston and returned to the piston in the door shock absorber according to the present invention.

Hereinafter, a door shock absorber according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 to 7, a door shock absorber according to an embodiment of the present invention absorbs a load generated in a closing process of a door and buffers the impact. The door shock absorber includes a cylinder 100, (200), a volume correction means (260), a valve (300), and a fluid blocking ring (400).

The cylinder 100 forms an outer appearance of the door shock absorber, and has a circular or square cross section. One end of the cylinder 100 is closed and the other end of the cylinder 100 is closed by the sealing member 250. A fluid chamber 110 is formed in the inner space to receive a fluid such as oil or air.

The piston 200 is installed at one side of the cylinder 100 and at the other side of the cylinder 100 so as to be exposed to the outside of the cylinder 100. The other end of the piston 200 is connected to a portion of the inner surface of the door, Lt; / RTI >

The piston 200 reciprocates within the cylinder 100 when a load is generated due to the closing of the door and the piston 200 passes through the sealing member 250 and the volume correcting means 260, And is returned by a spring 210 installed along the longitudinal direction of the cylinder 100 in the hydraulic chamber 110 at the time of releasing the load.

The spring 210 uses a spring to precisely transmit an elastic force to stably operate the valve 300 connected to the piston 200.

The volume correcting means 260 is provided to correct the accommodation space of the fluid according to the volume of the piston 200 when the piston 200 reciprocates in the cylinder 100, And is moved from the piston to compensate the receiving space of the fluid.

The volume correcting means 260 includes a moving block 262 provided with a packing 263 facing the one side of the valve 300 and a resiliently biasing member 262 supported by the closing member 250 And an elastic spring 264 for pushing the moving block 262 toward the valve 300.

As the movable block 262 is resiliently mounted by the resilient spring 264, when the piston is drawn into the cylinder, the movable block 262 is retracted by the inserted volume, Is in such a compressed state.

In this state, when the piston is drawn out from the cylinder, the moving block 262 moves forward by the elastic force of the elastic spring 264 by the drawn volume, thereby uniformly controlling the fluid moving space.

The sponge is filled with a fluid in a gap therebetween, so that there is a problem in that smooth contraction and relaxation are not achieved when using the sponge for a long period of time, and in the shrunk state The relaxation operation speed is slowed and the return speed of the fluid is slowed down.

On the other hand, in the present invention, since the moving block 262 is pushed by the elastic force of the elastic spring 264, the operation is reliable and the return speed of the fluid is increased by the elastic force of the elastic spring 264, So that the user can be guided smoothly in a shorter time.

In the present invention, the valve 300, which is mounted on one end of the piston 200 and controls the movement of the fluid while reciprocally moving within the cylinder 100, is designed to achieve stable operation while being simple in structure.

A piston fixing groove 310 is formed at a center of one side of the valve 300 so as to insert and fix the piston 200. A protrusion 320 are formed.

The piston 200 is to be inserted into the piston fixing groove 310 so as not to be detached from the piston fixing groove 310. The protrusion 320 supports the spring 210, (400).

A support protrusion 330 is provided on the outer circumferential surface of the protrusion 320 for mounting the fluid shut-off ring 400 while supporting the spring 210.

The other end of the support protrusion 330 is spaced apart from the valve 300 to form an O-ring insertion groove 332 by providing a space between the support protrusion 330 and the valve 300, .

At this time, the support protrusions 330 should be formed at a predetermined interval so that the fluid can move therebetween. In the accompanying drawings, four pieces are formed at intervals of 90 degrees in order to stably support the springs.

A fluid guide protrusion 340 is formed on an outer circumferential surface of the valve 300 at a predetermined interval to form a fluid path 342 between the fluid guide protrusions 340. The valve 300 is formed to pass through the valve 300 from one side to the other side, A fluid transfer hole 350 is provided so that the fluid contained in the fluid chamber 110 is moved through the valve 300.

The fluid path 342 is formed so that the fluid contained in the first fluid space 111 facing one side of the valve 300 of the fluid chamber 110 when the piston 200 is returned faces the other side of the valve 300 And the fluid moving hole 350 is a passage for moving the piston 200 into the second fluid space 112 when a load is applied to the piston 200 and the piston 200 is drawn into the cylinder 100. [ And is a passage for moving the fluid to the first fluid space 111. [

At this time, a fluid blocking ring 400 is installed to control the movement of the fluid through the fluid path 342 and the movement of the fluid through the fluid transfer hole 350.

The fluid blocking ring 400 is inserted into the O-ring insertion groove 332 so that one side thereof closes the fluid transfer hole 350 and an outer circumferential surface thereof is in close contact with the inner circumferential surface of the cylinder 100.

Therefore, when a load is applied to the piston 200 due to the door closing operation, the fluid contained in the second fluid space 112 of the fluid chamber 110 forcibly opens the fluid blocking ring 400, And moves to the first fluid space 111 via the fluid transfer hole 350 after the transfer hole 350 is opened.

In order to smoothly open the fluid blocking ring 400, a pressurizing space (not shown) is formed on the outer circumferential surface of one side of the protrusion 320 where the O-ring insertion groove 332 is formed, between the protrusion 320 and the fluid blocking ring 400 The protrusion 322 protrudes to form the protrusion 323.

Accordingly, the fluid is moved to the pressurizing space 323 to press the inner circumferential surface of the fluid shut-off ring 400, so that the fluid shut-off ring 400 is easily opened to open the fluid transfer hole 350.

In addition, the fluid guide groove 325 may be recessed in the outer circumferential surface of the protrusion 320 where the support protrusion 330 is not formed. The fluid guiding groove 325 is recessed along the longitudinal direction of the protrusion 320 and is connected to the pressurizing space 323 to guide the fluid to the pressurizing space 323. [

Therefore, when a load is applied to the piston 200, the fluid can be smoothly moved to the pressurizing space 323, and then the fluid shut-off ring 400 can be opened more easily.

On the other hand, when the load applied to the piston 200 is released and the piston 200 is drawn out of the cylinder 100, the fluid contained in the first fluid space 111 of the fluid chamber 110 flows into the fluid The outer circumferential surface of the blocking ring 400 is pressed and forcibly pulled to generate a gap with the cylinder 100 to move to the second fluid space 112 through the gap.

The outer circumferential surface of the valve 300 may be expanded toward the portion where the fluid shut-off ring 400 is installed so that the fluid in the first fluid space 111 may smoothly come into contact with the outer circumferential surface of the fluid shut- And is formed as an inclined surface 301.

As the inclined surface 301 is formed, the speed of the fluid is increased and the fluid is guided to press the outer circumferential surface of the cylinder 100 in contact with the inner circumferential surface of the cylinder 100, ) Can easily be pinched.

A part of the fluid transfer hole 350 may be connected to a part of the edge of the piston fixing groove 310 so that the piston fixing groove 310 may be formed in the piston fixing groove 310. However, (Not shown).

This is to solve the problem that when the piston 200 is inserted and fixed in the piston fixing groove 310, the air inside the piston fixing groove 310 can not escape and the piston 200 can not be inserted exactly to the end. That is, the piston 200 is smoothly inserted into the piston fixing groove 310 so that the air can be smoothly inserted into the piston fixing groove 310.

The operation of the present invention configured as described above will be described with reference to Figs. 6 and 7. Fig.

6, when a load is applied to the piston 200, the spring 210 is compressed while the valve 300 is moved by the piston 200, and the second fluid space (not shown) 112 press the inner circumferential surface of the fluid shut-off ring 400 to open the fluid transfer hole 350 and move to the first fluid space 111 through the fluid transfer hole 350.

At this time, as the fluid slowly moves from the second fluid space 112 to the first fluid space 111 through only the fluid transfer hole 350, the piston 200 is gradually drawn into the cylinder 100, It will buffer the door with it.

7, when the load applied to the piston 200 is released, the piston 200 is returned while the valve 300 is moved by the elastic force of the compressed spring 210. As shown in FIG.

The fluid contained in the first fluid space 111 presses the outer circumferential surface of the fluid shut-off ring 400 to cause the fluid shut-off ring 400 to be pinched. Thereafter, a gap is formed between the fluid shut-off ring 400 and the cylinder 100, To the second fluid space (112).

At this time, as the fluid moves from the first fluid space 111 to the second fluid space 112 through the plurality of fluid paths 342 formed on the outer circumferential surface of the valve 300, the piston 200 rapidly moves the cylinder 100 ), And is returned to the original state.

Particularly, in addition to the resilient restoring force of the spring 210, the fluid is moved by the elastic force of the elastic spring 264, thereby smoothly returning the piston 200 and returning within a short time.

100: cylinder 110: fluid chamber
111: first fluid space 112: second fluid space
200: piston 210: spring
250: sealing member 260: volume correction means
262: Moving Block 263: Packing
264: elastic spring 300: valve
301: slope surface 310: piston fixing groove
320: protrusion 322: space forming projection
323: Pressurizing space 325: Fluid guide groove
330: Support protrusion 332: O-ring insertion groove
340: fluid guide projection 342: fluid guide
350: fluid transfer hole 400: fluid blocking ring

Claims (6)

A cylinder 100 having a fluid chamber 110 for receiving a fluid and reciprocating through the fluid chamber 110 and passing through the closure member 250 and the volume correction means 260, A door shock absorber comprising a returning piston (200) and a valve (300) mounted on one end of the piston (200) and reciprocating within the cylinder (100)
A piston fixing groove 310 in which the piston 200 is inserted and fixed is formed at a center of one side of the valve 300 and a protrusion 320 protruding at a predetermined length is formed at the other central portion of the valve 300, The spring 210 is hooked on one side of the protrusion 320 and the other side is provided with a space between the valve 300 and the support protrusion 330 so as to form the O- A fluid guide protrusion 340 is formed on the outer circumferential surface of the valve 300 so as to protrude at a predetermined distance and form a fluid path 342 therebetween. The valve 300 penetrates the valve 300 from one side to the other side, A fluid transfer hole 350 is formed so that fluid contained in the chamber 110 is moved through the valve 300,
A fluid blocking ring 400 is installed in the O-ring insertion groove 332 so that one side thereof closes the fluid transfer hole 350 and an outer circumferential surface thereof closely contacts the inner circumferential surface of the cylinder 100,
When a load is applied to the piston 200 due to a door closing operation, fluid contained in the fluid chamber 110 is forcibly opened to open the fluid transfer hole 350 to move Wherein the housing comprises: a housing;
The method according to claim 1,
Wherein a part of the fluid transfer hole (350) is connected to a part of an edge of the piston fixing groove (310) to communicate with the piston fixing groove (310).
3. The method according to claim 1 or 2,
A space forming protrusion 322 is formed on the outer circumferential surface of one side of the protrusion 320 where the O-ring insertion groove 332 is formed to form a pressurizing space 323 between the protrusion 320 and the fluid blocking ring 400 .
The method of claim 3,
A fluid guiding groove 325 is formed along the longitudinal direction of the protrusion 320 so as to guide the fluid to the pressurizing space 323 on the outer circumferential surface of the protrusion 320 where the supporting protrusion 330 is not formed .
The method according to claim 1,
The outer circumferential surface of the valve 300 is formed as an inclined surface 301 so as to be extended toward a portion where the fluid blocking ring 400 is installed to guide the fluid to the outer circumferential surface of the fluid blocking ring 400 while increasing the velocity of the fluid ,
Wherein when the piston (200) is returned, the fluid forcibly slips the fluid shutoff ring (400) to form a gap with the cylinder (100) and moves through the gap.
The method according to claim 1,
The volume correcting means 260 includes a moving block 262 penetrating the piston 200 and provided with a packing 263 facing one side of the valve 300 and a moving block 262 supported by the closing member 250 And an elastic spring (264) for applying an elastic force to the moving block (262) and pushing the moving block (262) toward the valve (300).

Images