KR101657430B1 - Rotary damper - Google Patents

Abstract

The purpose of the present invention is to provide a rotary damper, configured to rotate a rotor by using kinetic energy of an actuating device rotated and linearly moved, wherein the rotor performs damping operation when the rotor is rotated in one direction and the rotor does not perform the damping operation when the rotor is rotated in another direction in order to reduce the size of the damper itself to reduce an installation space and be used regardless of a sliding body or a window vertically moved and rotated to perform the damping operation. More specifically, the other purpose of the present invention is to provide the rotary damper which can be manufactured to have a block shape to reduce overall dimensions and enables the rotor rotated for the damping operation to effectively receive resistance of working fluid to improve damping efficiency.

Description

Rotary damper {ROTARY DAMPER}

The present invention relates to a rotary damper, and more particularly, to a rotary damper, which is constructed to be able to perform a damping action by being mounted on a device that performs linear motion or rotational motion, So that it can be easily and conveniently installed even in a small installation space.

Generally, a damper is one of the devices that absorb vibration energy, and it is used for preventing noise and buffering when door is opened or closed suddenly in a window or the like. These dampers are also referred to as dampers when used to control the flow rate of fluid in chimneys or ducts. Such dampers used for buffering purposes are manufactured and used in various technologies as in the following patent documents 1 to 4.

(Patent Document 1) Korean Patent No. 1290252

The present invention relates to a built-in damper which is built in a furniture hinge and absorbs the opening and closing load of a furniture door. The built-in damper is structured so as to have a variable shape corresponding to the opening and closing load of the furniture door, So that the furniture door is always opened and closed at the setting speed, thereby improving the reliability.

(Patent Document 2) Korean Patent No. 1408768

The present invention relates to a shock absorbing damper for absorbing an impact force generated in the opening and closing operations of a furniture door to perform a shock absorbing function. By configuring the pressure regulator and the guider in a shock absorber to change a flow path in accordance with the opening / closing load of the furniture door, The furniture door is opened and closed at a setting speed irrespective of the size and weight of the door.

(Patent Document 3) Korean Patent Publication No. 10-2015-0016258

A sliding door component for connecting a door of a refrigerator appliance to a door of a furniture body to which the refrigerator appliance is mounted, the door of the refrigerator appliance being fixed on at least one hinge and having at least one additional single- Wherein the sliding door component has a guide element and a slide guided thereby, wherein the guide element is disposed in one of the doors and the slide is disposed in the other door

(Patent Document 4) Korean Patent Publication No. 10-2015-0111949

The present invention relates to a multi-link hinge for a furniture component, which is fixed to the pivotable door bearing through a plurality of link levers which can be fixed directly or indirectly to the furniture body and are connected to each other in a scissors- Wherein the linear damper is provided to damp both the closing movement and the opening movement of the door bearing.

However, existing dampers have the following problems.

(1) In order to smoothly perform the damping action of the conventional damper, the size of the damper itself increases.

(2) In other words, a conventional damper is usually damped in a cylinder manner or damped in a scissor manner, so that the damper must be manufactured to have a size capable of accommodating all damping operations.

(3) This is a limitation in applying existing dampers for furniture and windows with limited size and length. That is, the damper of the cylinder type is damped when the damper receives the force in the longitudinal direction, so that it requires at least a damper length mounting space to receive the force in this direction.

(4) Therefore, in order to install a conventional damper for damping operation, a space of at least a damper size is required. In particular, since the space needs to be secured as long as the damper length, mounting of a conventional damper is limited in a limited space.

(5) Therefore, when the space for installing the damper can not be secured, the existing damper can not be mounted.

Korean Registered Patent No. 1290252 (Registered on July 23, 2013) Korean Registered Patent No. 1408768 (Registered on Apr. 2014) Korean Patent Publication No. 10-2015-0016258 (published on 2015.02.11) Korean Patent Laid-Open No. 10-2015-0111949 (Publication date: October 10, 2015)

According to the present invention, the rotating body is rotated by the kinetic energy of an operating mechanism for rotating or linearly moving. At this time, the rotating body performs a damping action when it is rotated to one side, To provide a rotary damper capable of reducing the installation space by reducing the size of the damper itself and applying the damping action irrespective of a linear motion or a rotating motion window or a slide body It has its purpose.

Particularly, since the present invention can be manufactured in a block shape, a rotary damper that rotates for damping while reducing the overall dimensions is configured to strongly receive resistance of a working fluid, thereby providing a rotary damper capable of increasing damping efficiency. There is a purpose.

In order to achieve the above object, a rotary damper according to the present invention includes: a body 10 having an operation space 11 filled with a working fluid therein and a cover 12 for blocking the operation space 11; A rotating body 20 formed with an operating hole 21 at the center and rotatably installed in the working space 11; And the other part constitutes a friction part 32 which is fitted to the operating hole 21 so that one part protrudes out of the main body 10 and the other part constitutes a friction part 32, A shaft 30 having at least two operating grooves 33 formed at predetermined intervals so as to be gradually deeper along a direction of rotation in either direction; A lock pin 40 placed between each of the operating grooves 33 and the actuating hole 21 for rotationally restraining or releasing the rotating body 20 according to the rotating direction of the shaft 30; And a gear (50) mounted on the rotating part (31) and rotatably mounted together with the shaft (30).

Particularly, the rotating body 20 is characterized in that the friction protrusions 22 are protruded and formed on at least one of both surfaces so as to have a predetermined gap.

The operating hole 21 further has a fixing groove 21a formed therein so as to accommodate the lock pin 40 pushed outward along the operating groove 33 by the rotation of the shaft 30 on the inner peripheral surface .

Lastly, the operating grooves 33 are characterized by an even number of 2 to 10 pieces formed at equal intervals.

The rotary damper according to the present invention has the following effects.

(1) Since the rotating body rotates and the damping action is performed, the size of the entire damper can be reduced.

(2) Since this is less restrictive to the mounting space in which the damper can be mounted, the damper according to the present invention can be utilized for various appliances, furniture, and windows.

(3) Particularly, since the main body for determining the overall shape of the damper according to the present invention is formed in a block shape, the damper is not necessarily formed long or wide, so that the space for mounting the damper can be minimized.

(4) Since the gear is interlocked with the rotating body, and in particular, the damping operation is performed while rotating the gear by a force for moving the gear, that is, a linear motion like a slide body or a rotary motion like a hinge of a window, The rotary damper according to the present invention can be applied to various mechanisms regardless of the direction of motion.

(5) Since the lock pin is mechanically rotated together with the rotating plate by friction with the rotating plate in accordance with the rotating direction of the shaft, the damping operation is performed, so that the structure is simple and can be manufactured easily and inexpensively.

(6) Simple configuration makes it easy to repair or maintain even if a fault occurs, which is advantageous for maintenance.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a rotary damper according to a first embodiment of the present invention in a coupled state to show the overall configuration thereof.
Fig. 2 is a perspective view of the rotary damper according to the first embodiment of the present invention in a disassembled state to show the overall structure thereof. Fig.
3 is a sectional view for showing a state in which a shaft and a rotating body according to Embodiment 1 of the present invention are coupled through a lock pin.
4 is a sectional view for showing (a) when the rotating body is not rotating in the rotary damper according to [Embodiment 1] of the present invention, and (b) when it is rotating while damping.
[Fig. 5] is a view showing a rotating body according to [Embodiment 2] of the present invention, wherein (a) is a sectional view and (b) is a perspective view.
6 is a plan view showing a rotating body according to Embodiment 3 of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

The rotary damper D according to the first embodiment of the present invention includes a main body 10, a rotating body 20, a shaft 30, at least two lock pins (not shown) (40), and a gear (50).

Particularly, in the first embodiment, when the shaft 30 rotating together with the gear 50 rotates in a linear motion or a rotary motion, the lock pin 40 is rotated in either direction, 30 are rotated together to form a damping action. When the rotary pin 30 is rotated in the other direction, the rotary pin 30 and the shaft 30 are separated from each other.

Hereinafter, this configuration will be described in more detail.

The main body 10 is formed in a block shape as shown in Figs. 1 to 4. At this time, since the main body 10 accommodates the later described rotating body 20, it is preferable that the main body 10 is formed in a shape similar to that of the rotating body 20, that is, a disk shape.

Particularly, the main body 10 forms an operating space 11 inside as shown in FIG. 2 and FIG. 3. The working space 11 is formed in a circular disc shape to provide a space in which the rotating body 20 can be received and rotated. The working space 11 is formed to be slightly larger than the rotating body 20 so as to increase the damping effect when the rotating body 20 damps the working fluid by filling the working fluid. The working fluid at this time is preferably a normal oil flow used for a damping action in a normal damper.

The operation space 11 is formed such that one side thereof is opened to allow the rotator 20 to be mounted, and the lid 12 is removably mounted on the opened side. At this time, a through hole is formed in the lid 12 so that a shaft 30 to be described later can be fitted.

The rotating body 20 is configured to be rotatable in the above-described working space 11, as shown in Figs. 2 to 4. Thus, it is preferable that the rotating body 20 is formed in a shape that can be stably rotated without causing interference with other components or parts while rotating, for example, in the form of a disk.

The rotating body 20 also has an operation hole 21 formed at the center thereof as shown in Figs. 2 to 4. The operation hole 21 is provided with a shaft 30 so that it can rotate together with the rotating body 20 or only the shaft 30 can be rotated.

In the preferred embodiment of the present invention, as shown in Fig. 2, at least one of the rim 21 is formed so as to protrude outward so as to be in contact with the lock pin 40 mounted on the shaft 30 It is preferable to form a wide section. This is to make the rotating body 20 and the shaft 30 rotate together by the frictional force of the lock pin 40 while contacting the operating hole 21 so that the frictional force can be increased by widening the frictional area.

The shaft 30 is constituted by a rotating portion 31 protruding out of the main body 10 and a friction portion 32 constituting the main body 10 as shown in Figs. At this time, the shaft 30 is rotatably mounted to the main body 10, and is illustrated as an example in which the shaft 30 is supported by the through hole formed in the lid 12 as an example. However, the shaft 30 may be mounted on the main body 10 so as to be rotatably supported by the rotation itself.

At this time, since the gear 50 to be described later is mounted on the rotating portion 31, the gear 50 can be fitted and rotated together. In the figure, the rotating part 31 is formed into a square pillar shape, and the gear 50 is fitted and fixed so as to be rotatable together. However, a method of fixing the gear using a polygonal column, an ellipse, May be used.

Particularly, as shown in FIG. 2 and FIG. 3, at least two operating grooves 33 are formed on the outer periphery of the friction portion 32. At this time, the operating groove 33 is formed so as to be deeper in the direction when the shaft 30 rotates in either direction, that is, in the counterclockwise direction with respect to the center of the friction portion 32 in Fig. 3 (33) are formed.

In the preferred embodiment of the present invention, the operating groove 30 is formed in such a manner that the depth of the deeper side of the operating groove 30 accommodates the lock pin 40 to be described later, as shown in Fig. 4 (a) The lock pin 40 is sandwiched between the rotating body 20 and the shaft 30 as the lock pin 40 moves to the lower side as shown in Fig. 4 (b) .

These operating grooves 30 form at least two, which can be selected in the range of 2 to 10 to provide sufficient frictional force depending on the diameter of the shaft 3. [ Of course, it does not matter if the number is more than that.

Further, the operating grooves 30 are formed at predetermined intervals on the outer circumference of the friction portion 32, but are preferably formed at equal intervals. This is to allow the frictional force generated by the rotational force of the shaft 30 to be transmitted to the rotating body 20 through the uniformly-moving operation hole 21, thereby stably supporting the rotation.

As shown in Figs. 2 to 4, the lock pins 40 are provided in the above-described operation grooves 33, respectively. The lock pin 40 is formed in a roller or a ball shape so that when the shaft 30 rotates as shown in FIG. 4, the rotating body 20 and the shaft 30 move together Or only the shaft 30 is rotated. Such operation will be described later.

The gear 50 is fixed to the above-described rotating portion 31 as shown in Fig. 1 to Fig. In this case, the gear 50 is manufactured by a conventional technique and rotates the shaft 30 as it is rotated through a linear motion such as a rack-pinion or a rotary motion with other gears.

The damping action of the rotary damper according to the present invention will now be described with reference to FIG.

First, as shown in Fig. 4 (a), when the shaft 30 rotates in the clockwise direction, the friction portion 32 rotates together with it. At this time, since the lock pin 40 moves toward the inside of the operating groove 33, that is, the depth is deeper, no friction occurs between the rotating body 20 and the friction portion 32, and only the shaft 30 rotates.

4 (b), when the shaft 30 rotates in the counterclockwise direction, the friction portion 32 rotates together with the rotation of the shaft 30. Accordingly, the lock pin 40 is positioned outside the operating groove 33 Move to the lower depth. As a result, a friction force is generated between the rotating body 20 and the friction portion 32 while the lock pin 40 is caught between the inner surface of the operating hole 21 and the lower operating groove 33, And the shaft 30 rotate together. Thus, the rotating body 20 damps while rotating in the working fluid.

As described above, according to the present invention, when the shaft rotates, the rock pin is protruded or retracted according to the rotation direction of the shaft, and the damping action can be obtained only when the rock pin is rotated in either direction along the rotation direction.

The second embodiment of the present invention has the same structure as the first embodiment but differs from the first embodiment in that the fixing groove 21a is additionally formed in the rotating body 20 as shown in Fig. Therefore, the same reference numerals as in [Embodiment 1] are used for the same reference numerals, and a detailed description thereof will be omitted, and only the additional configuration will be described here.

[Embodiment 2] In the embodiment 2, as shown in Fig. 5, the fixing groove 21a is further added in the above-described operation hole 21. [ When the lock pin 40 is in a position sandwiched between the operating hole 21 and the friction portion 32 as shown in Fig. 4 (b) and Fig. 5, By forming the lock pin 40 on the inner surface of the operating hole 21 in contact with the pin 40 so that the lock pin 40 engages with the stopper to engage the rotating body 20 and the shaft 30 more firmly It is.

[Embodiment 3] according to the present invention is characterized in that a friction protrusion 22 is further formed on the rotating body 20 as compared with [Embodiment 2], as in [Fig. 6]. Therefore, the same reference numerals as in [Embodiment 2] are used for the same reference numerals, and a detailed description thereof will be omitted, and only additional configurations will be described here.

[Example 3] is a case in which a ridge 22 is formed on the rotating body 20 as shown in Fig. The friction protrusions 22 are configured to friction with the working fluid when the rotating body 20 rotates in the working space 11 filled with the working fluid so as to increase the damping force. That is, since the friction protrusions 22 prevent the rotating body 20 from rotating easily due to the working fluid, more force is required to rotate the rotating body 20 accordingly.

In the preferred embodiment of the present invention, since the damping force can be adjusted according to the number of the friction protrusions 22, it is possible to manufacture a rotary damper having different damping forces even if a rotary damper of the same size is used.

Since the friction protrusions 22 can be formed on at least one of both surfaces of the rotating body 20, the friction protrusions 22 can be formed on one or both surfaces depending on the strength of the damping force It will be readily apparent to those skilled in the art.

As described above, according to the present invention, since the rotational resistance of the rotating body rotating in the working fluid can be adjusted through the friction protrusions, it is possible to adjust the damping force as well as the damping force of the same size, Can be used.

10: Body
11: Working space
12: Cover
20: rotating body
21: Operation hole
21a: Fixing groove
22: Friction projection
30: Shaft
31:
32: Friction portion
33: Operation home
40: Rock pin
50: gear

Claims (4)

(10) having a working space (11) filled with a working fluid therein and a cover (12) for blocking the working space (11); A rotating body 20 formed with an operating hole 21 at the center and rotatably installed in the working space 11; And the other part constitutes a friction part 32 which is fitted to the operating hole 21 so that one part protrudes out of the main body 10 and the other part constitutes a friction part 32, A shaft 30 having at least two operating grooves 33 formed at predetermined intervals so as to be gradually deeper along a direction of rotation in either direction; A lock pin 40 placed between each of the operating grooves 33 and the actuating hole 21 for rotationally restraining or releasing the rotating body 20 according to the rotating direction of the shaft 30; And a gear (50) mounted on the rotating part (31) and rotatably mounted together with the shaft (30)
The rotating body (20) is formed such that a friction protrusion (22) protrudes from at least one side of both sides so as to have a predetermined gap,
The operating hole 21 further has a fixing groove 21a formed therein so as to accommodate the lock pin 40 pushed outward along the operating groove 33 by the rotation of the shaft 30 .
delete delete The method according to claim 1,
The operating groove (33)
And an even number of 2 to 10 are formed at equal intervals.

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