KR101325673B1 - Rotary type oil damper - Google Patents

Abstract

The present invention relates to a rotary oil damper comprising a case with opened one side which stores oil; a rotation member one end of which is combined with the case and which pressurizes the oil by rotation as a pressurization piece protrudes from an outer circumference; and a switching member which pressurizes or moves the oil by being assembled with the pressurization piece and flowing in the rotation direction of the rotation member. A U-shaped assembly groove with an opened outer side is formed at the center of the pressurization piece of the rotation member. A pressurization part hole is formed at both sides of the assembly groove. The switching member has a movable shaft inserted into the assembly groove at the center and a holding piece at the end part not to be completely separated from the assembly groove. A switching part hole is formed at both sides of the movable shaft and is misaligned from the pressurization part hole. The present invention facilitates the assembly between the switching member and the pressurization piece, performs a stable damping operation by desirably disposing the connection of an oil path between the switching member and the pressurization piece, and facilitates a rotation operation by a cam mechanism.

Description

Rotary type oil damper

The present invention relates to a rotary oil damper that can mitigate shock and protect a product by preventing a sudden closing of a rotating mechanism such as a seat and a cover mounted on a cover or a toilet and a bidet of a Kimchi refrigerator.

In general, a rotary damper is used in a rotary mechanism that is opened and closed by rotation, such as a cover of a kimchi refrigerator, a seat or a cover of a toilet bowl, a bidet, and the like, to prevent an impact from being caused by a sudden closing upon closing.

Conventional rotary dampers include an elastic member type rotary damper using a spring and a rotary oil damper to impart a damping force using a viscous fluid. The elastic member type rotary damper has a damping force in both directions. Therefore, it does not apply when damping force is required in only one direction.

The rotary oil damper is filled with oil in the case, and a rotating member is installed in the case to obtain a damping force while the oil is pressurized by the rotation of the rotating member.

To this end, the rotating member is provided with a pressing piece for pressurizing oil on the outer circumferential surface, and the pressure piece is formed with an oil passage so that the oil can pass through without being pressurized during the reverse movement.

Looking at Patent Document 1 as an example of such a rotary oil damper, the case 100 is provided with a body that is open to one side to store the oil built-in; One end is coupled to the body of the case to move the oil embedded in the case 100 to close the inside of the body while the other end is provided with a rotating body 210 is coupled to the seat and the cover, the case at the end of the rotating body Rotating projection is provided to rotate to be coupled to the rotating groove of the oil movement hole 231 and the oil pressing piece through which the elastic coupling hole 232 is opposed to both sides of the oil movement hole on the outer circumferential surface of the rotating body Rotating member 200 is rotated; A cap 300 mounted to the case to support the rotation of the rotating member; And, the opening and closing body 410 is moved by the pressure of the oil moved in accordance with the rotation of the rotating member 200 to move the elastic piece to the elastic coupling hole while opening and closing the body to open and close the oil movement hole to adjust the movement of oil. It is characterized by including the opening and closing member (400).

The oil damper of Patent Literature 1 is used by being mounted on a cover of a toilet bowl, and when the cover is lifted upward, the rotating body 210 of the rotating member 200 mounted on the cover rotates in a forward direction to rotate the rotating body. The oil is pressurized by the rotary pressing piece 230 protruding from the 210, and the pressurized oil smoothly moves upward through the oil moving hole 231 in the other direction of the rotary pressing piece 230. When the cover is rotated downward, the rotary body 210 rotates in the reverse direction while the rotary pressing piece 230 pressurizes the oil, and the opening / closing member 400 is caused by the pressure of the oil. Close the oil moving hole 231 while being in close contact with the rotary pressing piece 230 so that the oil passes through a small amount between the rotary pressing piece 230 and the body 110 to provide a damping function so that the cover rotates slowly downward. Became The.

Such Patent Document 1 has been pointed out that the assembly of the opening and closing member is not good, and the damping function is difficult to be made smoothly because the passage of oil is not easy in close contact between the opening and closing member and the rotary pressing piece.

1. Korea Utility Model Registration No. 0455702

The present invention is to provide a rotary oil damper that is excellent in the assembly, and the damping action can be made stable by the movement of the oil more smoothly as a technical problem.

Another object of the present invention is to provide a rotary oil damper which allows a more convenient use by performing an automatic return action about a certain section by a cam action during operation according to rotation.

The present invention, in order to solve the above problems, one side is opened to store the oil, one end is coupled to the case and the rotating member is formed to protrude a pressure piece on the outer periphery and pressurizes the oil by rotation; In the rotary oil damper is assembled to the pressure piece and comprises an opening and closing member to flow in the rotational direction of the rotating member to pressurize or move the oil, in the middle of the pressing piece of the rotating member 'U' The self-assembling groove is formed, and the pressing portion holes are formed at both sides of the assembling groove, and the opening and closing member is provided with a movable shaft fitted into the assembling groove in the middle so as not to be completely separated from the assembling groove. A piece is formed, and the opening-and-closing hole is formed in the position which shifted from the said press part hole in the both sides of the said movable shaft, It is characterized in that.

Accordingly, the opening and closing member may be assembled by simply inserting the movable shaft into the assembly groove from the outside, thereby increasing work efficiency, and the opening and closing member of the pressing member of the pressing piece and the opening and closing member of the opening and closing member are arranged to be slightly displaced. By the operation of being in close contact with or separated from the pressing piece is made to immediately flow and block the oil can be made a clear operation.

Here, the length of the movable shaft is formed to be longer than the thickness of the pressing piece is the opening and closing member is in close contact with the pressing piece and the separation is made.

In addition, the inner periphery of the case is provided with a pair of stoppers facing each other to limit the movement of the pressing piece, it is effective to pressurize the oil that the pair is provided symmetrically on the rotating member.

According to a preferred feature of the present invention, a locking projection is formed in the middle of the assembly groove so that the movable shaft of the opening / closing member is not separated after being press-assembled.

Therefore, the movable shaft can be easily assembled, there is no flow in the up and down direction in the assembled state, it is possible to maintain a stable assembly state.

Another feature of the present invention is that the opening and closing member is further provided with a control pin fitted in the pressing portion hole.

The control pin is fitted with a play in the pressing portion hole, thereby appropriately adjusting the amount of oil passing through the pressing portion hole to enable an effective damping action.

In particular, the pressing portion hole is preferably formed in a long hole may be configured to be fitted with a control pin in the pressing portion hole.

Another feature of the invention, the case and the rotating member is further provided with a cam means for controlling the rotation of each other.

Here, the cam means, the fixed cam is installed inside the case, the movable cam having a cam surface symmetrical to the cam surface of the fixed cam at the front end of the rotating member is configured to elastically press-contact the fixed cam by a spring can do.

By the cam means, the rotary object installed with the rotary oil damper according to the present invention has a function of returning to the original position before the center of a certain section, and after the center section, the rotation is automatically made to a desired position more conveniently. It becomes possible to use.

The present invention can be easily assembled with the opening and closing member and the pressing piece, the connection of the oil passage between the opening and closing member and the pressing piece is preferably arranged to provide a stable damping action can be made.

The present invention has a function to return to the original position before the center of the operation during the operation according to the rotation, and the operation to automatically rotate to the desired position after the center section can be made more convenient use It also provides useful effects.

1 is an exploded perspective view showing an example of a rotary oil damper according to the present invention.
2 is a perspective view of a rotating member according to the present invention.
3 is a perspective view of the opening and closing member according to the present invention.
Figure 4 is a cross-sectional view of the rotary oil damper according to the present invention.
5 is a temporary cross-sectional view of FIG. 4.
6 is a cross-sectional view of the spiral of FIG. 5.
7 and 8 are cross-sectional views showing an operating state of the present invention.
9 is an exploded perspective view showing another embodiment of the present invention.
10 is a cross-sectional view of the coupling state of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

1 is an exploded perspective view showing an example of a rotary oil damper according to the present invention, Figure 2 is a perspective view of a rotating member according to the present invention, Figure 3 is a perspective view of the opening and closing member according to the present invention, Figure 4 is the present invention FIG. 5 is a cross-sectional view of the spiral oil damper of FIG. 4, and FIG. 6 is a cross-sectional view of the spiral oil damper of FIG. 5.

1 to 6, the rotary oil damper according to the present invention is roughly divided into a case 100, a rotating member 200 accommodated in the case 100, and the inside of the case 100. It includes an opening and closing member 300 is assembled to the outer periphery of the rotary member 200.

The case 100 is formed in a cylindrical shape having one side opened, and a stopper 110 is formed to protrude to face the inner circumference thereof, and a case fixing part 120 for fixing to the rotating object at the opposite end of the case is opened. Is formed to protrude.

Rotating member 200 is partitioned in the middle and one side is a rotary compression 210 is drawn into the interior of the case 100, the other side is made of a connecting portion 220 for fixing to the rotating object, the rotary compression ( 210 is introduced into the case 100 to close the opening of the case 100, and is closed by the cap 130 that is squeezed to the end of the case 100.

O-ring 230 is mounted in the middle of the rotating member 200 to prevent the outflow of oil injected into the case 100.

The rotary compression shaft 210 of the rotating member 200 is made to rotate in the case 100, the protruding ring 240 is formed on the front end surface of the rotary compression shaft 210 in order to achieve a stable rotation In addition, a ring groove 140 is formed on an inner wall surface of the case 100 so that the protruding ring 240 may be seated thereon to be engaged with each other.

On the outer circumferential surface of the rotary compression 210, the pressing piece 250 protrudes in both directions, and in the middle of the pressing piece 250, a 'U' shaped assembly groove 251 having an outer side is formed. The pressing part holes 252 are formed at both sides of the assembling groove 251.

An opening and closing member 300 is assembled to each of the pressing pieces 250, and the opening and closing member 300 has a plate shape, and a movable shaft 310 protrudes from the center of one surface thereof, and the movable member 310 is movable at the distal end of the movable shaft 310. The engaging piece 311 having a size wider than the cross section of the shaft 310 is formed in an expanded form, and the adjustment pin 320 is located at a position corresponding to the pressing part hole 252 on both sides of the movable shaft 310. The protrusions are formed respectively, and the opening and closing hole 330 is formed between the movable shaft 310 and the adjustment pin 320, respectively.

Here, the length of the movable shaft 310 should be formed longer than the thickness of the pressing piece 250, the pressing portion hole 252 should be formed at least larger than the diameter of the control pin 320 is inserted therein. Preferably, the pressing portion hole 252 is formed in the form of a long hole.

Accordingly, the opening and closing member 300 is assembled by the combination of the movable shaft 310 and the assembly groove 251, the movable shaft 310 fitted into the assembly groove 251 is a locking piece formed at the end Deviation in the axial direction is prevented by 311.

In addition, the engaging projection 253 is formed in the middle of the assembling groove 251, the assembly is made by applying a slight pressure when assembling the movable shaft 310, once assembled is separated by the locking projection 253 This is to be prevented.

In the state in which the opening and closing member 300 is assembled to the pressing piece 250, the adjustment pin 320 of the opening and closing member 300 is fitted into the pressing part hole 252 of the pressing piece 250.

As shown in the cross-sectional view of Figure 5 and Figure 6, the pressing piece 250 is gradually narrowed to the outside of the rotary compression 210, the opening and closing member 300 is assembled to the reverse compression 210 The inner side of the engaging piece 311 is formed to be inclined gradually toward the center of the inclined surface so that the lower side with respect to the opening and closing member.

Forming the inclined surface of the pressing piece 250, the opening and closing member 300 and the locking piece 311 can be easily inserted into the pressing portion hole 252 when the control pin 320 is assembled. At the same time to guide, so that the opening and closing member 300 at the time of compression of the oil according to the rotation of the rotating member 200 to maintain a perpendicular to the direction of the compression of the oil.

The opening and closing member 300 installed on both sides is assembled in the same rotational direction to perform the same action.

Looking at the operation of the present invention as follows.

7 and 8 are cross-sectional views showing the operating state of the present invention, Figure 7 is a rotary object such as various covers when the rotary object is installed in the rotary oil damper is installed in the upper side, that is, kimchi refrigerator or toilet bowl, etc. It is a state when the cover is to be opened and shows a state that can be easily rotated without the resistance of the oil pressure, Figure 8 shows a state when rotating the rotating object downward, a state in which the damping action by the oil pressure is performed Indicates.

According to the present invention, the case fixing part 120 of the case 100 and the connecting part 220 of the rotating member 200 are connected to and fixed to opposite portions of the rotating object to rotate the rotating member 200 with respect to the case 100. It is installed and used to make it happen.

As shown in FIG. 7, when the rotating object is rotated upward, the rotating member 200 rotates with respect to the case 100. The oil filled in the case 100 is pressurized by the rotation of the rotary compression 210. The oil is pressurized by the movement to 250, and the pressurized oil attempts to move to the opposite side through the pressurizing part hole 252, and eventually the oil pushes the opening / closing member 300 to retreat and presses the pressurizing part hole 252 and the opening and closing part. While passing through the hole 330 continuously, the pressure is reduced by flowing out to the opposite side so that the rotating member 200 rotates without difficulty.

Here, the adjustment pin 320 is coupled to the pressing portion hole 252, the control pin 320 is coupled with the retreat of the opening and closing member 300 is shallow depth, the pressing portion hole 252 is It is made of a long hole does not have a problem to pass a small amount of oil, but due to the retraction of the adjustment pin 320 can be passed through a larger amount of oil can be made easier rotation of the rotating member 200, also adjustment The pin 320 serves to control the rapid movement of oil.

The rotating member 200 rotated as described above is stopped while the pressing piece 250 is in contact with the stopper 110 of the case 100.

On the contrary, when rotating the rotating object as shown in FIG. 8, the rotating member 200 rotates in the opposite direction as in FIG. 7. Similarly, the rotating member 200 is pressurized by the rotation of the rotary compression shaft 210 of the rotating member 200. When the piece 250 is moved to press the oil, the oil is to act to move to the opposite side.

Thus, the opening and closing member 300 is pushed by the oil by the movement action of the oil rather close to the pressing piece 250 to block the pressing portion hole 252.

The pressurizing part hole 252 and the opening and closing part hole 330 forming the oil passage are disposed to be offset from each other, so that the oil passage is blocked when the opening and closing member 300 and the pressing piece 250 are in close contact with each other. Since only a small amount of oil is moved between the pressing piece 250 and the opening and closing member 300, so as to slowly rotate the rotating member 200 until the opening and closing member 300 contacts the stopper 110. And, the rotating object can be safely rotated downward without impact.

FIG. 9 is an exploded perspective view showing another embodiment of the present invention, and FIG. 10 is a cross-sectional view of the coupling. Referring to these drawings, the front end of the rotating member 200 and the inner wall surface of the case 100 in contact therewith are in contact with each other. Cam means are provided.

That is, a spring 400 is built in the front end of the rotating member 200, and a movable cam 600 elastically acting in the axial direction is installed by the spring 400. The fixing cam 500 in close contact is fixedly installed on the inner wall surface of the case 100.

The cam surface in which the fixed cam 500 and the movable cam 600 are in contact with each other is symmetrically coupled to each other, specifically, the top dead center and the bottom dead center in the direction of rotation and in the circumferential direction. Cam surfaces 501 and 601 formed by the inclined lines to connect are formed to be in close contact with each other.

The cam means of this configuration is to maintain the state in which the fixed cam 500 and the movable cam 600 is always in close contact by the spring 400, when the rotating member 200 is rotated with respect to the case 100, The cam faces 501 and 601 push against each other against the spring 400, and when the upper and lower points of each cam face 501 and 601 meet, that is, the transition point, the cam faces 501 and 601 rotate more easily by the elastic force of the spring 400. .

That is, when the cam surface in contact does not pass the transition point, the force to return to the initial state is acting, and when the transition point passes, the force to continue to rotate in the advancing direction acts so that the rotation of the rotating object is a transition point. In other words, the automatic rotation is made when passing through the middle.

When lifting the rotating object to the upper side, that is, even when the rotating member 200 is easily rotated without the resistance of the oil is automatically rotated after passing the middle by the cam action to lift the rotating object conveniently On the contrary, even if the rotating member 200 is rotated in the direction in which the damping function according to the resistance of the oil works, stable and continuous rotation can be automatically performed by the cam action.

The cam surface may vary in shape depending on the object to be rotated.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are illustrative and explanatory and are intended to provide further explanation of the invention as claimed. Embodiments incorporating replaceable components as equivalents in the components of the claims may be included within the scope of the present invention.

100; A case 110; stopper
120; Case fixing 130; cap
140; Ring groove 200; Rotating member
210; Rotary compression 220; Connection
230; O-ring 240; Protrusion ring
250; Pressing piece 251; Assembly groove
252; Pressing part hole 253; Obstacle
300; Opening and closing member 310; Movable shaft
311; Engaging piece 320; Adjusting pin
330; Opening and closing hole 400; spring
500; Fixed cam 600; Cam
501,601; Cam face

Claims (6)

A case having one side opened to store the oil, one end coupled to the case, and a pressing member protruding from the outer circumference to pressurize the oil by rotation, and a rotating member assembled to the pressing piece to rotate the rotating member. In the rotary oil damper comprising an opening and closing member to flow according to the pressure or to move the oil,
In the middle of the pressing piece of the rotary member is formed a 'U' shaped assembly groove with an outer side opening, the pressing portion hole is formed on both sides of the assembly groove, the opening and closing member is movable in the assembly groove in the middle A rotating piece of oil damper, characterized in that the shaft is provided, the engaging piece is formed at the end thereof so as not to be completely separated from the assembly groove, and the opening and closing hole is formed on the both sides of the movable shaft in a position displaced from the pressing part hole.
The method of claim 1,
A rotating oil damper, characterized in that the locking projection is formed in the middle of the assembly groove so that the movable shaft of the opening and closing member is not separated after being press-assembled.
The method of claim 1,
The opening and closing member is a rotary oil damper, characterized in that the adjustment pin is further formed in the pressing portion hole.
The method of claim 1,
The pressing portion hole is formed in a long hole, the opening and closing member is a rotary oil damper, characterized in that the control pin is fitted to the pressing portion hole is further formed.
The method of claim 1,
The case and the rotating member is a rotary oil damper, characterized in that further cam means for controlling the rotation of each other.
The method of claim 5, wherein
The cam means, the fixed cam is installed inside the case, the movable cam having a cam surface symmetrical to the cam surface of the fixed cam at the front end of the rotating member is elastically pressed close to the fixed cam by a spring. Rotary oil damper.

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