KR100742354B1 - Shock-absorbing device for door hinge - Google Patents

Abstract

A shock absorbing hinge device for a door is provided to increase safety with smooth operation by controlling the moving speed of a fluid and the opening and closing speed of a door when opening and closing a door and to prevent the damage of a door by keeping a door not to be opened beyond the appointed angle. The shock absorbing hinge device for a door contains a housing(10) having an appointed space to house a fluid inward, a shaft(20) penetrating the inside of the housing, and a controller operating by the rotation of the shaft and controlling the opening and closing of a door, wherein the controller comprises a fixed cam portion(30) coupled to an opening of the housing and provided with a fixed cam(32) projected to be inserted to the inside of the housing, and a rotary cam(40) engaged with the fixed cam of the fixed cam portion and compressing or releasing a spring(50) according to the rotation of the shaft and moving on the shaft in a straight line.

Description

Shock-absorbing hinge for doors {SHOCK-ABSORBING DEVICE FOR DOOR HINGE}

1 is an exploded perspective view of a buffer hinge device for a door according to an embodiment of the present invention,

Figure 2a to 2c is a state diagram showing the operating state of the door buffer hinge device according to the opening and closing of the door according to an embodiment of the present invention,

Figure 3 is a state diagram showing a combined state of the fixed cam and the rotary cam according to the opening and closing of the door according to an embodiment of the present invention,

Figure 4 is a state diagram showing the opening of the housing according to an embodiment of the present invention,

Figure 5 is a state of use of the buffer hinge device according to an embodiment of the present invention,

Figure 6 is a perspective view showing the inside of the housing according to another embodiment of the present invention,

7 is a view showing an opening of the housing according to another embodiment of the present invention;

8 is a perspective view showing a shaft according to another embodiment of the present invention;

Figure 9 is an exploded perspective view of the door buffer hinge device according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

10: housing 12: fluid passage

13: second auxiliary fluid path 14: gasket

16: cap 17: tightening bolt

20: shaft 22: first auxiliary fluid movement path

24: Secondary fixing cam 25: First guide page

26: 2nd guide surface 27: Contact prevention groove

30: fixed cap 32: fixed cam

33: first slope 34: second slope

35: interference preventing groove 36: leakage preventing ring

40: rotating cam 42: third slope

44: coupling piece 50: spring

60: door

The present invention relates to a shock-absorbing hinge device for a door, and more particularly, it is possible to improve the safety by smooth rotation by controlling the moving speed of the fluid and the rotation speed of the door when opening and closing the door, the door is not opened more than a certain angle. The present invention relates to a buffer hinge device for a door that can prevent damage.

In general, the door is installed at the boundary of a certain place, the entrance of a building, a place where people enter or exit, or a place requiring opening and closing of electronic products. The opening and closing of the door is rotated around a hinge device installed by connecting the door and the door frame. Although the opening and closing is made, such a door has a problem of being frequently closed and suddenly closed, so that the door is normally used with an opening and closing buffer means.

The opening and closing buffer means of the door is a fixed plate fixed to the door frame, a rotating plate fixed to the door, a housing fixed to the lower portion of the rotating plate and the fluid is injected, a shaft connected and fixed to the fixing plate, the rotation of the shaft It consists of a piston which flows up and down, a compression spring for restoring the piston, and a cap to seal the housing.

The opening and closing buffer means, when the door is opened, the rotating plate and the housing rotates in the same direction and at the same time the piston rises along the thread of the shaft, the fluid is introduced into the empty space by the rise of the piston. When the door is closed, the piston is pushed down by the restoring force of the compression spring, and the piston presses the fluid introduced into the empty space into the empty space formed again.

Therefore, by maintaining the proper opening and closing speed when opening and closing the door to prevent the safety accident due to sudden opening and closing of the door, it is possible to automatically close after opening the door.

However, the opening and closing shock absorbing means can prevent the sudden closure of the door, but the compression force of the compression spring is instantaneous because the large force is operated, if the predetermined resistance is generated at the closing moment during the closing operation of the door, the door is not completely closed. In addition, when used in electronic products such as refrigerators, there is a drawback of energy waste.

In addition, since the cap and the housing are hermetically coupled by screwing, the coupling structure is complicated by the processing of the screw, and accordingly, there is a problem of increasing the manufacturing cost due to the difficult manufacturing.

The present invention was devised to solve the above problems, and an object of the present invention is to control the moving speed and amount of fluid and the rotational speed of the door during opening and closing of the door to prevent sudden closure as well as smooth rotation of the door. Can improve the safety, improve the reliability of use, prevent damage by preventing the door from opening over a certain angle, and reduce the manufacturing cost and improve the productivity of the product due to the simple structure. There is provided a buffer hinge device for a door.

The configuration of the present invention for achieving the above object, the door buffer including a housing for receiving the fluid therein, and a control means for controlling the opening and closing of the door while being operated by the rotation of the shaft passing through the interior of the housing In the hinge device, the control means, coupled to one side of the housing, the fixed cap portion formed with a fixed cam protruding to be inserted into the housing on one side; One side is fixed to the fixed cam and the fixed cam portion is composed of a rotary cam linearly flowing on the shaft while compressing or releasing the spring provided on the other side in accordance with the rotation of the shaft, the outer circumferential surface of the fixed cam at a predetermined angle An inclined surface is formed, and a second inclined surface is formed to be inclined in an opposite direction to one side of the first inclined surface, and an interference preventing groove having a predetermined depth is formed at an end of the second inclined surface, and an outer circumferential surface of the rotary cam is formed on the second inclined surface. A third inclined surface is formed at regular intervals so as to be engaged by sliding, and a fluid movement path is formed on the inner circumferential surface of the housing to guide the flow of fluid when the rotary cam moves and to control the amount of fluid movement.

Here, a leakage preventing ring is provided to prevent the leakage of fluid between the shaft and the fixed cam, the coupling piece is further provided to improve the coupling force of the rotary cam between the shaft and the rotary cam, the housing and the fixed cap It is preferable that a gasket is further provided between parts to improve sealing property.

In this case, it is preferable that the first auxiliary fluid moving path having a predetermined depth in the longitudinal direction is further formed on the shaft.

On the other hand, in another embodiment of the present invention, it is preferable that a second auxiliary fluid moving path is further formed on the inner circumferential surface of the housing in a direction perpendicular to the fluid moving path.

In addition, the door buffer hinge device according to another embodiment of the present invention includes a housing for receiving fluid therein, and a control means for controlling the opening and closing of the door while being operated by the rotation of the shaft passing through the interior of the housing In the door buffer hinge device, the control means, the auxiliary fixing cam integrally formed on the shaft, one side of the auxiliary fixing cam is engaged with the compression or release spring provided on the other side according to the rotation of the shaft The rotating cam is linearly flows on the shaft while the outer circumferential surface of the auxiliary fixing cam is formed with a first guide surface at an angle, and a second guide surface is formed to be inclined in an opposite direction to one side of the first guide surface. A contact preventing groove having a predetermined depth is formed at an end of the guide surface, and the outer circumferential surface of the rotary cam slides on the second guide surface. A third inclined surface is formed at a predetermined interval so that one side of the inner circumferential surface of the housing is formed with a fluid movement path for inducing a flow of fluid during movement of the rotary cam and controlling a movement amount of the fluid, and a predetermined length in the shaft. Characterized in that the first auxiliary fluid path of the depth is formed.

Hereinafter, a buffer hinge device for a door of the present invention will be described in detail with reference to the accompanying drawings.

Figure 1 is an exploded perspective view of the door buffer hinge device according to an embodiment of the present invention, Figures 2a to 2c shows the operating state of the door buffer hinge device according to the opening and closing of the door according to an embodiment of the present invention. 3 is a state diagram showing a coupling state of the fixed cam and the rotation cam according to the opening and closing of the door according to an embodiment of the present invention, Figure 4 is a state diagram showing the opening of the housing according to an embodiment of the present invention. 5 is a state diagram of use of the buffer hinge device according to an embodiment of the present invention.

As shown in FIGS. 1 to 5, a buffer hinge device for a door according to an exemplary embodiment of the present invention includes a housing 10 in which a predetermined space is formed to accommodate a fluid therein, and an interior of the housing 10. It comprises a shaft 20 of a predetermined length passing through, and the control means for controlling the opening and closing of the door 60 while being operated by the rotation of the shaft 20.

The shaft 20 is formed such that both outer peripheral surfaces corresponding to each other are formed in parallel circular or have a plurality of angles, such as square, hexagon, etc., one side of the shaft 20 is fixed to one side of the housing 10 ( 17) is coupled and fixed, it is preferable that the other side is provided so as to project than the opening of the housing (10).

At this time, the fixing bolt 17 is provided with an O-ring to improve the sealing force so that the fluid contained in the interior of the housing does not leak to the outside, so as to be in close contact with the outer peripheral surface of the one side of the shaft 20 in the interior of the housing (10) It is preferable that the cap 16 is further provided.

The control means is coupled to the opening of the housing 10 and the fixed cap portion 30 is formed with a fixed cam 32 protruding to be inserted into the interior of the housing 10 on one side, and the fixed cap portion 30 of One side is engaged with the fixed cam 32 and is composed of a rotary cam 40 that is linearly flows on the shaft 20 while compressing or releasing the spring 50 provided on the other side according to the rotation of the shaft 20.

At this time, the outer circumferential surface of the fixed cam 32 is formed in a direction in which the first inclined surface 33 protrudes at a predetermined angle, and the second inclined surface 34 is inclined in an opposite direction to one side of the first inclined surface 33. An interference preventing groove 35 having a predetermined depth is formed at an end of the second slope 34, and the second slope 34 is inclined at an angle greater than that of the first slope 33.

On the outer circumferential surface of the rotary cam 40, a third inclined surface 42 is formed at predetermined intervals so as to slide and engage with the second inclined surface 34 of the fixed cam 32, and the third inclined surface 42 protrudes. The end is formed to be curved so that it can be inserted into the interference preventing groove 35 is preferably formed so as not to interfere with the inner surface of the interference preventing groove 35.

Therefore, when the rotary cam 40 is engaged with the fixed cam 32 while the shaft 20 rotates as the shaft 20 rotates, the protruding end of the rotary cam 40 interferes with the first inclined surface 33. The door 60 is gradually opened, crosses the first inclined surface 33, and then interferes with the second inclined surface 34 so that the door 60 is naturally rotated, and a rotation cam in the interference preventing groove 35. The protruding end of the 40 is inserted to prevent rotation of the door 60.

Here, in the inner circumferential surface of the housing 10, when the rotating cam 40 is moved while being rotated in accordance with the rotation of the shaft 20, at least one fluid movement path to induce the flow of the fluid and to control the amount of movement of the fluid ( 12) is formed, preferably on both inner peripheral surfaces corresponding to each other.

Naturally, the inner and outer shapes of the housing 10 may be formed in various shapes, such as a quadrangular shape or a hexagonal shape, and the fixed cam 32 and the rotary cam 40 according to the inner shape of the housing 10. It is also natural that the outer shape of the) is changed.

On the other hand, the shaft 20 is further formed with a first auxiliary fluid moving path 22 of a predetermined depth in the longitudinal direction.

Accordingly, in the state where the fixed cam 32 and the rotary cam 40 are engaged, that is, the door is open, the fluid is accommodated outside the rotary cam 40, and the shaft 20 rotates according to the rotation of the shaft 20. When the rotary cam 40 is moved in one direction, the fluid accommodated in the outer side of the rotary cam 40 passes through the fluid movement path 12 and the first auxiliary fluid movement path 22 to allow the rotation cam 40 to move. It is accommodated in the space formed according to the movement, in the state in which the door is completely closed, the rotary cam 40 closes the fluid path 12 so that the flow of fluid contained in the outside of the rotary cam 40 Blocked, the fluid flows only through the first auxiliary fluid movement path 22, and then the door is temporarily stopped by the instantaneous fluid movement resistance.

Here, a leakage preventing ring 36 is provided between the shaft 20 and the fixed cam 32 to prevent the outflow of the fluid so that the fluid injected into the housing 10 does not leak out, and the shaft Between the 20 and the rotary cam 40, it is preferable to further provide a coupling piece 44 to improve the coupling force of the rotary cam 40.

In addition, it is preferable that the gasket 14 is further provided between the housing 10 and the fixing cap 30 to improve the sealing property when the bolt is coupled.

Figure 6 is a perspective view showing the inside of the housing according to another embodiment of the present invention, Figure 7 is a state diagram showing an opening of the housing according to another embodiment of the present invention, Figure 8 is a shaft according to another embodiment of the present invention Is a perspective view.

6 to 8, when the housing and the shaft according to another embodiment of the present invention are seen, the housing 10 is formed in a quadrangular shape, and the fluid movement path 12 has a predetermined length on one side of the inner circumferential surface thereof. The second auxiliary fluid moving path 13 is further formed over the entire length in a direction perpendicular to the fluid moving path 12.

In addition, the shaft 20 is fixed to one side is coupled to the fixing bolt 17 on one side of the housing 10 as in one embodiment of the present invention, the other side is provided to protrude than the opening of the housing 10 In the outer circumferential surface, it is preferable that the first auxiliary fluid movement path 22 is not formed.

That is, the second auxiliary fluid movement path 13 of the housing 10 is formed to have the same function as the first auxiliary fluid movement path 22 of the shaft 20.

Figure 9 is an exploded perspective view of the door buffer hinge device according to another embodiment of the present invention.

As shown in Figure 9, the door buffer hinge device according to another embodiment of the present invention is operated by the rotation of the housing housing the fluid therein, and the shaft passing through the interior of the door opening and closing It comprises a control means for controlling the.

The control means, the auxiliary fixing cam 24 formed integrally on the shaft 20, the auxiliary fixing cam 24 and one side is engaged with the spring provided on the other side in accordance with the rotation of the shaft ( It consists of a rotary cam 40 which flows linearly on the shaft 20 while compressing or decompressing 50.

That is, the fixing cam 32 formed on one side of the fixing cap 30 according to an embodiment of the present invention is integrally formed on the shaft 20, and the auxiliary fixing cam 24 is fixed to the present invention. The same as the cam 32, the shape and operation relationship of the auxiliary fixing cam 24 will not be described any more.

The operation and effect of the present invention configured as described above will be described based on the open / closed state of the door.

In the state in which the door 60 is closed, the protruding end of the rotary cam 40 interferes with the first inclined surface 33 of the fixed cam 32, and the spring 50 is in a compressed state, and the rotation is performed. Fluid is accommodated both inside and outside the cam 40. [Fig. 3 (I)]

When the door 60 is opened in this state, the rotation cam 40 is rotated while the shaft 20 is rotated with the rotation of the door 60. In this case, the rotation cam 40 has a first inclined surface ( The spring 50 is compressed while interfering with 33, and the spring 50 is compressed at the highest level when the spring 50 reaches the highest point of the first inclined surface 33. In this case, the door 60 forms an angle of 15 to 40 degrees. [Fig. 3 (II)]

Thereafter, after passing through the highest point of the first inclined surface 33, the compressed spring 50 is gradually released while contacting the second inclined surface 34, the rotary cam 40 due to the restoring force of the spring 50 Protruded end of the) is sliding on the second inclined surface 34 to proceed with the rotation of the door 60, the fluid received in the fixed cam 32 and the inner side of the rotary cam 40 is the fluid path 12 It is moved to the outside of the rotary cam 40 along. In this case, the door 60 forms an angle of 40 to 120 °. [Fig. 3 (III)]

The door 60 is no longer rotated as the protruding end of the rotary cam 40 is inserted into the interference preventing groove 35 of the fixed cam 32 after sliding on the second inclined surface 34. The fluid received in the interior of the 32 and the rotary cam 40 is all moved to the outside of the rotary cam 40 along the fluid path (12). In this case, the door 60 forms an angle of 120 to 140 °. (Fig. 3 (IV))

As described above, the present invention is configured to control the unnecessary rotation of the door 60 at a predetermined angle and to be stopped at the maximum rotation angle to prevent damage due to inadvertent rotation of the door 60. will be.

On the other hand, in the state in which the door 60 is opened, the spring 50 maintains a state in which the rotary cam 40 is pressed, so that the external pressure is not closed, and when the external pressure is applied, the door 60 is closed. While slowly rotating, the spring 50 is gradually compressed. In this case, the fluid injected into the housing 10 moves into the empty space formed by moving the rotating cam 40 by moving the fluid movement path 12, that is, the space between the fixed cam 32 and the rotating cam 40. To be filled.

As described above, the present invention is opened by the interference of the fixed cam 32 and the rotary cam 40 when the door 60 is opened, and when the door 60 is closed, the door 60 can be closed through the reverse process. When the rotation cam 40 is closed over the second inclined surface 34 of the fixed cam 32 when the 60 is closed, the sliding cam is slid and moved by the restoring force of the spring 50 on the first inclined surface 33 to accurately open the door ( 60) will be closed.

As described above, according to the present invention, it is possible to prevent the accidental closing of the door to prevent safety accidents, as well as to improve the safety by smooth rotation of the door, thereby improving the reliability of use, and the door to a certain angle or more. It is possible to prevent breakage by not opening, and the simple structure has the advantage of reducing the manufacturing cost and thereby improving the productivity of the product.

Claims (5)

In the shock absorbing device for a door comprising a housing for receiving a fluid therein, and a control means for controlling the opening and closing of the door while being operated by the rotation of the shaft passing through the interior of the housing, The control means is coupled to one side of the housing 10, the fixed cap portion 30 is formed with a fixed cam 32 protruding to be inserted into the housing 10 on one side, and the fixed cap portion 30 The fixed cam 32 and one side is engaged with the rotating cam 40 is linearly flows on the shaft 20 while compressing or releasing the spring 50 provided on the other side according to the rotation of the shaft 20. Become, A first inclined surface 33 is formed on the outer circumferential surface of the fixed cam 32 at a predetermined angle, and a second inclined surface 34 is formed to be inclined in an opposite direction to one side of the first inclined surface 33. 34 is formed at the end of the interference preventing groove 35 of a predetermined depth, and the outer circumferential surface of the rotary cam 40, the third inclined surface 42 is formed at regular intervals so as to slide and engage the second inclined surface 34. A buffer hinge device for a door, characterized in that a fluid movement path 12 is formed on one side of the inner circumferential surface of the housing 10 to guide the flow of fluid during movement of the rotary cam 40 and to control the amount of fluid movement. . The method of claim 1, A leakage preventing ring 36 is provided between the shaft 20 and the fixed cam 32 to prevent leakage of the fluid, and between the shaft 20 and the rotating cam 40 of the rotating cam 40. Coupling piece 44 is further provided to improve the coupling force, the cushioning hinge for the door, characterized in that the gasket 14 is further provided between the housing 10 and the fixed cap portion 30 to improve the sealing property Device. The method according to claim 1 or 2 The shaft 20 is a buffer hinge device for a door, characterized in that the first auxiliary fluid moving path 22 of a predetermined depth in the longitudinal direction is further formed. The method according to claim 1 or 2, A cushioning hinge device for a door, characterized in that a second auxiliary fluid moving path (13) is further formed on an inner circumferential surface of the housing (10) in a direction perpendicular to the fluid moving path (12). In the shock absorbing device for a door comprising a housing for receiving a fluid therein, and a control means for controlling the opening and closing of the door while being operated by the rotation of the shaft passing through the interior of the housing, The control means, the auxiliary fixing cam 24 formed integrally on the shaft 20, the auxiliary fixing cam 24 and one side is engaged with the spring provided on the other side in accordance with the rotation of the shaft ( Composed of a rotary cam 40 is linearly flows on the shaft 20 while compressing or decompressing 50, The outer circumferential surface of the auxiliary fixing cam 24 is formed with a first guide surface 25 at a predetermined angle, the second guide surface 26 is formed to be inclined in an opposite direction to one side of the first guide surface 25, the second guide surface A contact preventing groove 27 having a predetermined depth is formed at the end of the 26, and the third inclined surface 42 is fixed to the outer circumferential surface of the rotary cam 40 at regular intervals so as to slide and engage with the second guide surface 26. A fluid movement path 12 is formed on one side of the inner circumferential surface of the housing 10 to guide the flow of the fluid during movement of the rotary cam 40 and to control the amount of movement of the fluid, and on the shaft 20. A buffer hinge device for a door, characterized in that the first auxiliary fluid moving path (22) having a predetermined depth in the longitudinal direction.

Images