KR200416924Y1 - Buffer device of door hinge with damping structure - Google Patents

Abstract

The present invention has a damping structure that prevents the door from closing or opening suddenly by smoothly controlling the opening and closing speed of the door by air pressure when the door is opened and closed in a shock absorber supporting the opening and closing of the door. A door hinge shock absorber. Door hinge buffer device having a damping structure according to the present invention, the chain portion is made of a plurality of chain form and folded or unfolded according to the opening and closing of the door to convert the rotational movement of the door into a linear movement; A shaft connected to one side chain of the chain part and configured to transmit the rotational movement of the door to the linear movement of the piston; A first cylinder including the shaft and to which the chains of the chain part are guided and moved; A piston and a valve interlocked according to the operation of the shaft to adjust the air pressure according to the opening and closing speed of the door; A ball installed as a flow material inside the valve to block and regulate the flow path between the piston and the valve according to the flow rate of air; And a second cylinder configured to reciprocate with the piston and the valve configured therein.

Door hinge, shock absorber, air pressure, flow path, piston, valve, ball

Description

Buffer device of door hinge with damping structure

1 is a perspective view of the door hinge shock absorber using the present invention damping structure.

Figure 2 is a perspective view of the door hinge shock absorber having a damper structure of the present invention.

3 and 4 is a partial cutaway perspective view and a cross-sectional view for showing the configuration of the shock absorber of the present invention.

Figure 5 (a) and (b) is a perspective view and a cross-sectional view showing the structure of the piston and the valve which is the main part of the present invention.

Figure 6 (a) and (b) is a cutaway perspective view and cross-sectional view of another embodiment showing a structure in which the position of the piston and the valve of FIG.

Figure 7 (a) and (b) is a cut perspective view and a cross-sectional view of another embodiment showing a structure in which the position of the piston and the valve of Figure 5 differs.

Explanation of symbols on the main parts of the drawings

30a: chain 40: first cylinder

41: shaft 50: second cylinder

51: piston 52: valve

53: Ball 54: Filter

55: packing 56: plug

The present invention relates to a shock absorber of the hinge (hinge) for supporting the opening and closing of the swinging door, and more particularly to prevent the door from closing or opening rapidly by smoothly controlling the opening and closing speed of the door by air pressure when the door is opened and closed. The present invention relates to a door hinge shock absorber having a damping structure.

In general, the hinge is used to construct a swing door by rotatably supporting one side end of the door to one side of the door frame corresponding to the door so that the door can be rotated to open and close about one end of the shaft. Such a hinge is usually composed of two hinge brackets each having a cylinder at one end and mounted on the door and the door frame, and hinge pins that are commonly fitted to the cylinders of these hinge brackets and connect the two hinge brackets. The hinge of such a structure simply allows the door to be opened and closed only with respect to the door frame, so that the door could not be smoothly opened and closed by adjusting the speed when the door is opened and closed.

Therefore, in order to control the closing speed of the door when opening and closing the door to install a separate door closer to the door and the door frame to buffer the closing speed by the hydraulic action.

In Korea Utility Model Registration No. 205937, the upper and lower structure of the torsion spring is built in the center of the joint that couples the two hinge brackets, and the upper part is the structure that additionally incorporates the compression spring. The shock absorbing hinge is disclosed to increase the shock absorbing effect when the door is closed using.

In addition, Korean Utility Model Registration No. 345011 also has a taper portion provided to be narrowed upward to a part of the flow path of the piston unit at the joint portion for joining the two hinge brackets, and a ball for adjusting the flow rate which is elastically biased toward the small diameter. It consists of a valve means consisting of an adjusting bolt to form an adjustment hole to communicate with the flow path at the upper end of the piston rod to maintain the airtight and screwed in the axial direction to press the ball in a semi-elastic direction. According to this configuration, it also serves as an auto-closer function for closing the door, but in general, there are not many cases in which the door is left open at home. In addition, in most homes and offices, the doors are adjacent to one wall at an angle of 90 ° and are rarely opened 180 ° and are usually opened and closed within 90 to 100 °. In this configuration, the structure that acts as a door cushion is attached to the hinge axis itself (joint), so that the door must operate within the opening angle, so the opening angle must be changed back to linear movement within the hinge axis. It is about mm. In other words, the damping structure in the hinge has to be very complicated and sophisticated, it is difficult to manufacture a solid and reliable because it must be manufactured to control the opening and closing of a large door with a movement within 15mm. In addition, manufacturing costs increase due to the increase in manufacturing costs.

The hinge structure for speed control when opening and closing the conventional door has a structure that allows a cushioning action by elasticity of the spring through a spring between the joint means for coupling the two hinge brackets.

The conventional door hinge structure of the structure such as the spring structure for the buffer of the door is inserted and coupled between the two hinge brackets, so that both the hinge coupling portion is exposed when the door is opened or closed, the volume of the hinge coupling structure It becomes big and gives a feeling of not refined.

The present invention is to solve the various problems according to the conventional door hinge structure, the chain portion consisting of a plurality of chains folded and unfolded according to the opening and closing of the door; A shaft, a piston, and a valve operatively linked according to the movement of the chain; And by adopting a damping structure characterized in that the ball is installed as a flow material inside the valve to operate by the flow rate of the air flowing in accordance with the opening and closing of the door to absorb the shock during the sudden opening and closing of the door to increase the opening and closing speed of the door It is an object of the present invention to provide a door hinge shock absorber having a damping structure for smooth adjustment.

Another object of the present invention is to change the rotational movement of the door to the linear movement of the piston and the valve installed in the hinge to increase the stroke length of the shock absorber to control the opening and closing speed of the door, and the power transmission path and The purpose of the present invention is to provide a door hinge shock absorber having a damping structure that can simplify the device and make it more robust and reliable, and reduce the manufacturing precision of the shock absorber, thereby simplifying the manufacturing process and reducing the cost.

Still another object of the present invention is to provide a door hinge shock absorber having a damping structure that allows the chain to be folded when the door is closed to be inserted into one side of the door to make the exterior of the hinge portion coupling part neat.

Door hinge shock absorber having a damping structure of the present invention for achieving the above object, the chain portion is made of a plurality of chain form and folded or unfolded according to the opening and closing of the door to convert the rotational movement of the door into a linear motion; A shaft connected to one side chain of the chain part and configured to transmit the rotational movement of the door to the linear movement of the piston; A first cylinder including the shaft and to which the chains of the chain part are guided and moved; A piston and a valve interlocked according to the operation of the shaft to adjust the air pressure according to the opening and closing speed of the door; A ball installed as a flow material inside the valve to block and regulate the flow path between the piston and the valve according to the flow rate of air; And a second cylinder in which the piston and the valve are formed therein to reciprocate.

The chain portion is folded at a certain angle to one side (inside) to maintain a semicircle and the other side (outer side) to be straight to maintain a straight line.

The valve is formed to have an internal cavity structure in the form of a tapered jar that is inclined narrowly at both ends, and inside the valve there is a ball for controlling the flow (flow) of air according to the opening and closing of the door. Is built into.

In the valve, a plurality of grooves are formed at both of the flow path inlets to which the ball contacts.

The piston and the valve are preferably configured integrally but can be installed in a separate configuration.

In addition, a packing for preventing a gap between the second cylinder and the shaft is provided at one end of the second cylinder, and a cap for sealing the air is provided at the other end.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. And in describing the present invention, if it is determined that the detailed description of the related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

EXAMPLE

Figure 1 shows the state of use of the buffer hinge is adopted the damping structure according to the present invention. As shown, the buffer hinge of the present invention is coupled to one side of the chain portion 30, the plurality of chains are coupled to the first hinge bracket 10 connected to the door through the opening of the second hinge bracket 20 The chain of the chain portion 30 is guided to enter the other door. In other words, the chain 30a of the chain portion 30 moves in or out of the door while moving toward the second hinge bracket 20 in accordance with the opening and closing operation of the door.

2 is a perspective view of a buffer hinge provided with a door damping structure of the present invention. As shown, the chain 30a of the chain portion 30 is coupled to a plurality of bicycle chains such that the length of the chain when the door is closed is about 50 to 100 mm. Each chain 30a is configured to insert and connect a connecting pin 30b to the hole 30c. One side of the chain 30a is fixed to the first hinge bracket 10 by a fastening means such as a screw, and the other side is coupled to the shaft 41 inserted into the door through the second hinge bracket 20. . The chain (30a) serves to change the rotational movement of the swing door to the linear movement of the cylinder and the piston to be described below. The chain 30a is structured to maintain a semicircle by being folded at a predetermined angle, for example, 5 to 15 ° in one direction (inside), and to maintain a straight line that is not folded in the opposite direction (outside).

Therefore, when the door is opened, each chain 30a of the chain part 30 is folded inward and discharged from the door while drawing a semicircle, and when the door is closed, the chains 30a are reversed one by one (outward). As it is restored in the direction, it enters the door.

3 and 4 are some cutaway perspective views and cross-sectional views showing the configuration of the chain cylinder, the piston and the valve and the cylinder inserted into the door.

When opening and closing the door, one side of the chain 30a coupled to the shaft 41 enters or exits the first cylinder 40 and the shaft 41 moves the chain 30a (door opening and closing). ), The first cylinder 40 and the second cylinder 50 are reciprocated.

One end of the second cylinder 50 is provided with a packing 55 for preventing a gap between the second cylinder 50 and the shaft 41, and a stopper 56 for sealing air is installed at the other end. It is. In addition, the second cylinder 50 is provided with a piston 51 and a valve 52 that operate in conjunction with the shaft 41 therein.

5A and 5B are cutaway perspective views and cross-sectional views showing the structures of the piston 51 and the valve 52 installed in the second cylinder 50. As shown in the drawing, the piston 51 and the valve 52 are preferably integrally formed, and an air passage Pa, which is an air passage, is formed in the central portion of the piston 51. A ball 53 is mounted on the inner space flow path Pa 'of the valve 52 as a flow material, and forms a tapered jar shape inclined narrowly at both ends. That is, in the general state in which the door is stopped or slowly opened and closed, the ball 53 is placed in the center portion and the concave portion inside the valve 52. In addition, as shown in the enlarged view B of FIG. 5A, a plurality of small grooves 52a are formed in the contact portion of the flow path Pa 'on which the ball 53 touches inside the valve 52. It is. The ball 53 may be formed of a material such as metal, resin, and rubber.

6 (a) and 6 (b) are cutaway perspective views and cross-sectional views of another embodiment showing a structure in which the piston 51 and the valve 52 which are installed in the cylinder 50 have different positions. As shown, the structure of the piston 51 and the valve 52 is the same, but unlike in FIG. 5, the piston 51 and the valve 52 are separated so that the valve 52 is installed at the end of the cylinder 50. do. At this time, at one end of the valve 52, a filter 54 having a porosity such as a nonwoven fabric is installed to block the inflow of dust or dirt due to the inflow and outflow of external air and the ball 53 and the valve 52. And it prevents the flow path in the cylinder 50 is contaminated.

7 (a) and 7 (b) are similar to FIG. 6 in which the positions of the piston 51 and the valve 52 installed in the cylinder 50 are separated, but the structure of the valve 52 and the ball 53 Cutout perspective view and cross-sectional view showing another embodiment of the structure.

In FIGS. 5 and 6, the ball 53 is separated from the flow path Pa 'of the valve 52 and has a flow material structure. However, in the present embodiment, the ball 53 itself is an elastic body such as silicone or rubber. Using the material, the valve 52 is manufactured in an assembly structure integrated with a manufacturing method such as mold molding. The ball 53 is formed by helically forming a plurality of flanges 53a connected integrally so that the length (path) is as long as possible when the flanges 53a are extended. The ball 53 is located in the center of the valve 52 and blocks the flow paths at both ends of the valve 52 according to the strength (flow rate) of the air flow inflow / outflow by the elasticity of the elastic body to function as a valve.

8 is an operation state diagram for explaining the operation of the door hinge shock absorber having a damping structure of the present invention.

Referring to the drawings will be described the operation of the subject innovation buffer device as follows.

)으로 천천히 이동하게 되며, 공기는 피스톤(51)과 밸브(52)의 유로(Pa,Pa')를 따라 천천히 오른쪽(R)에서 왼쪽(L)으로 이동하게 된다. 따라서, 밸브(52)내의 공기가 천천히 이동하게 되므로 볼(53)의 움직임에 영향을 주지 않으므로 밸브(52)의 양쪽 어느 방향으로도 이동하지 않고 가운데 부분 오목한 부분에 그대로 정지해 있게 된다.When the door is stopped or slowly closes normally, as shown in FIG. 8 (a), the chains 30a shown in FIG. 3 move slowly, and the shaft 41 connected to the chain 30a also moves in the direction of the arrow (

), And the air moves slowly from the right side (R) to the left side (L) along the flow paths Pa and Pa 'of the piston 51 and the valve 52. Therefore, since the air in the valve 52 moves slowly, it does not affect the movement of the ball 53, so that it does not move in both directions of the valve 52, but stops as it is at the center concave portion.

)으로 급격히 움직이면서 실린더 안쪽으로 급하게 밀려들어오게 되어 피스톤(51) 및 밸브(52)의 유로(Pa,Pa') 내에서 공기의 흐름이 빠르게 된다. 즉, 제2 실린더(50) 왼쪽(L)의 공기의 밀도가 작아지고 오른쪽(R)의 공기의 밀도가 커지게 되어 볼(53)이 공기의 빠른 흐름에 밀려서 공기밀도가 낮은 반대편 쪽 유로입구(Pa)구멍을 막아주게 된다. 이로써, 볼(53)이 피스톤(51)측 유로(Pa)의 입구를 막아주어 공기가 제2 실린더(50)의 왼쪽부분(L)으로 이동하지 않게 되고 피스톤(51)의 움직임이 급격히 저하되게 된다.On the other hand, when the door is suddenly closed by wind or idle play, as shown in Fig. 8B, the shaft 41 moves in the direction of the arrow (

While rapidly moving to the inside of the cylinder is rapidly pushed into the flow path (Pa, Pa ') of the piston 51 and the valve 52 is a rapid flow of air. That is, the density of air on the left side L of the second cylinder 50 decreases and the density of the air on the right side R increases, so that the ball 53 is pushed by the rapid flow of air, so that the air flow path on the opposite side having the low air density is low. (Pa) will block the hole. As a result, the ball 53 blocks the inlet of the piston 51 side flow path Pa so that air does not move to the left portion L of the second cylinder 50 and the movement of the piston 51 is sharply lowered. do.

At this time, in practice, the piston 51 does not stop suddenly due to the elasticity of the air of the left (L) and the right (R) of the second cylinder (50) is a kind of damping action. In addition, even if the force of closing the door suddenly continues, the piston 51 moves rapidly while the compressed air of the right portion R of the second cylinder 50 is gradually released into the groove 52a shown in part B of FIG. 5. Instead, it is a kind of cushioning that slowly moves (closes) and closes the door at a smooth speed.

)으로 급격히 움직이면서 공기는 제2 실린더(50) 오른쪽(R)으로 빠르게 빠져나가게 된다. 즉, 제2 실린더(50)의 왼쪽(L)의 공기의 밀도가 커지고 오른쪽부분(R)의 공기의 밀도가 작아지게 되어 볼(53)이 공기의 빠른 흐름에 밀려서 공기밀도가 낮은 유로입구(Pa')의 구멍을 막아주게 된다. 이로써, 공기는 제2 실린더(50)의 오른쪽부분(R)으로 이동하지 않게 되고 피스톤(51)의 움직임이 급격히 저하하게 되면서, 급격히 닫힐 때와 마찬가지로, 피스톤(51)이 급격히 움직이지 않고 서서히 움직이는 일종의 완충작용을 하게 되어 도어가 원만한 속도로 열리게 되는 것이다.On the other hand, the case in which the door is suddenly opened is shown in Fig. 8 (c), the shaft 41 in the direction of the arrow (

The air moves rapidly to the right side R of the second cylinder 50 while moving rapidly. That is, the density of the air of the left side L of the second cylinder 50 increases and the density of the air of the right side R decreases, so that the ball 53 is pushed by the rapid flow of air so that the air density at the low air density ( Blocked the holes in Pa '). As a result, the air does not move to the right side portion R of the second cylinder 50, and the movement of the piston 51 is sharply lowered. As in the case of sudden closing, the piston 51 does not move rapidly but moves slowly. It has a kind of cushioning effect, and the door opens at a smooth speed.

As described above, according to the state of opening and closing the door, the chain portion is folded or unfolded to change the rotational movement of the door to the linear movement of the shaft, piston and valve.

Since the description of the above embodiment is merely an example with reference to the drawings for a more thorough understanding of the present invention, it should not be construed as a limitation to the present invention. In addition, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the basic principles of the present invention.

As described above, the door hinge shock absorber having the damping structure of the present invention absorbs the shock when the door is suddenly opened and closed to smoothly control the opening and closing speed of the door, and the chain portion attached to the hinge is used to control the rotation of the door. The stroke length of the shock absorber, which acts as a damping function, is changed by the linear movement of the piston and the valve, and the power transmission path and the device can be simplified, making it more robust and reliable, and the manufacturing precision of the shock absorber hinge can be lowered. The process is simple and the cost is reduced. In addition, the chain that is folded when the door is closed is inserted into the inside of one side of the door has the effect of cleaning the appearance of the hinge portion engaging portion.

Claims (14)

In the door hinge buffer for adjusting the opening and closing speed of the door, A chain part which is formed in a plurality of chain forms and is folded or unfolded according to opening and closing of the door to change the rotational movement of the door into a linear motion; A shaft connected to one side chain of the chain part and configured to transmit the rotational movement of the door to the linear movement of the piston; A first cylinder including the shaft and to which the chains of the chain part are guided and moved; A piston and a valve interlocked according to the action of the shaft to adjust the air pressure according to the opening and closing speed of the door; A ball installed as a flow material inside the valve to block and regulate the flow path between the piston and the valve according to the flow rate of air; And a damping structure, wherein the piston and the valve are formed therein and constitute a second cylinder reciprocating. The door hinge shock absorber having a damping structure according to claim 1, wherein the chain part comprises a plurality of chains that are folded or unfolded as the door is opened or closed. The door hinge shock absorber with a damping structure according to claim 2, wherein the chain is configured to maintain a semicircular state by being folded at an angle to one side (inside) and to maintain a straight line without folding the other side (outside). The door hinge buffer having a damping structure according to claim 1, wherein a packing for preventing a gap between the shafts is installed at one end of the second cylinder, and a cap for sealing the air is installed at the other end of the second cylinder. Device. The door hinge shock absorber according to claim 1, wherein the piston and the valve are integrally formed. 6. The door hinge shock absorber according to claim 5, wherein the piston and the valve are each formed with flow paths for air flow. 6. The door hinge shock absorber with damping structure according to claim 5, wherein the valve is formed to form a space in a jar shape tapered to both sides. The door hinge shock absorber according to claim 5, wherein the valve has a plurality of grooves formed at both end portions of the valve contacted with each other. The door hinge shock absorber having a damping structure according to claim 5, wherein the valve has a ball for controlling the flow of air according to opening and closing of the door. 10. The door hinge shock absorber according to claim 9, wherein the ball is made of a metal material or a synthetic resin material. 10. The door hinge shock absorber according to claim 9, wherein the ball is formed of a plurality of spiral flanges integrally with the valve as an elastic member. 10. The door hinge shock absorber according to claim 9, wherein the ball is formed to be positioned at an intermediate portion of the valve. The method of claim 5, The door hinge buffer device having a damping structure, characterized in that the piston and the valve are formed separately. The method of claim 13, The valve is a door hinge shock absorber having a damping structure, characterized in that to prevent the contamination of air by installing a filter of a porous material such as a nonwoven fabric with the shaft at one end.

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