CN112576129A

CN112576129A - Hinge device for rotary door

Info

Publication number: CN112576129A
Application number: CN202010420044.5A
Authority: CN
Inventors: 李映卓; 郑吉锡
Original assignee: Puzhitai Technology Co ltd
Current assignee: Puzhitai Technology Co ltd; Partstec Construction Co Ltd
Priority date: 2019-09-30
Filing date: 2020-05-18
Publication date: 2021-03-30
Also published as: JP2021055526A; BR102020016015A2

Abstract

The present invention relates to a hinge device for a swing door, and more particularly, to a hinge device for a swing door which is mounted to a swing door body and opens and closes the swing door body by rotating the door body in various ways. The hinge device for the swing door of the invention rotates according to external force, and then rotates in a natural stopping way in a certain section; after the rotation is performed in a natural stop manner, the automatic reverse rotation is performed in the reverse rotation section.

Description

Hinge device for rotary door

Technical Field

The present invention relates to a hinge device for a swing door, and more particularly, to a hinge device for a swing door which is mounted to a swing door body and opens and closes the swing door body by rotating the door body in various ways.

Background

A structure in which a door is hinge-coupled to a body object to open or close the inside of the body object is widely known.

In one example, a refrigerator is composed of a body for storing food and a door body for opening and closing the body.

When the refrigerator door is opened by external force, if the external force is too large, the refrigerator door may be damaged by collision with other objects occasionally.

In addition, when the refrigerator door is closed by external force, if the external force is too large, the refrigerator door brings great impact to the refrigerator body, and further brings impact to the utensils and the like stored in the refrigerator door, thereby causing problems.

In order to solve the disadvantages, a damping force is generated when the refrigerator door is opened or closed, so that the door body is slowly opened or closed.

However, the conventional art has the same damping force when opening and closing the refrigerator door, and thus, if the damping force is large, there is a disadvantage that the opening is too slow when opening the refrigerator door; if the damping force is small, when the refrigerator door is closed, the defect of impact on the refrigerator body can be overcome because the closing speed is the same as the opening speed.

In addition, when bulky or heavy articles or a large number of articles are put into or taken out of the refrigerator, it is necessary to open the refrigerator door for a long time.

If the refrigerator is a traditional common refrigerator, when a plurality of articles are put into the refrigerator or taken out of the refrigerator, the door body can be automatically closed. Therefore, in order to prevent the refrigerator door from being closed, a user needs to hold the refrigerator door by hand, and put articles into or take articles out of the refrigerator, which is very inconvenient.

In addition, the height of the door body is not easily adjusted.

[ Prior Art document ]

[ patent document ]

Publication No. 10-2006-0119459

Laid-open patent No. 10-2006-0099355

Disclosure of Invention

Technical problem

In order to solve the above-mentioned problems, the present invention provides a hinge device for a swing door, characterized in that: the door body can rotate at different speeds when a body object (a refrigerator and the like) opens and closes the door body through rotation, so that the refrigerator door can be opened and closed conveniently; the door body which is opened by rotating the body object can still be kept in an opened state, so that when articles are put into or taken out of the body object, a user does not need to intervene the door body, and the articles are convenient to put into or take out; the height of the rotatable door body can be easily adjusted by the body object (refrigerator and the like).

Technical scheme

In order to achieve the above object, the present invention provides a hinge device for a swing door, characterized in that:

the method comprises the following steps:

the hollow shell is internally communicated with a 1 st inner cavity and a 2 nd inner cavity, and the 1 st inner cavity is filled with oil;

a shaft rotatably fitted to the housing through the 1 st cavity, having one end protruding to the outside through one end of the housing and the other end inserted into the 2 nd cavity, having an outer peripheral surface spaced from the 1 st cavity, and filled with the oil therebetween, and having a 1 st mounting groove formed in the outer peripheral surface of the other end;

a damper unit which is attached to the 1 st chamber and adjusts the amount of movement of oil filled in the 1 st chamber when the housing and the shaft rotate relative to each other;

a clutch roller inserted from the 2 nd inner cavity to the 1 st mounting groove;

a clutch member having one end wound around the other end of the shaft in the 2 nd inner cavity, the other end protruding to form a 1 st locking protrusion, and a through hole formed around the one end of the shaft for inserting and disposing the clutch roller;

a holding member fitted to the other end of the housing, the holding member being protruded to form a 2 nd locking protrusion along an inner direction of the housing;

a torsion spring disposed inside the housing, one end of which is coupled with the 1 st locking protrusion and the other end of which is coupled with the 2 nd locking protrusion,

a 2 nd mounting groove formed in an inner circumferential surface of the housing, the 2 nd mounting groove being adapted to mount the clutch roller inserted into the through hole, wherein when the shaft is rotated in a state where the clutch roller is simultaneously inserted into the 1 st mounting groove and the through hole, a rotational force of the shaft is transmitted to the clutch member via the clutch roller, and the clutch member is rotated together with the shaft; when the shaft rotates in a state where the clutch roller is simultaneously inserted into the through hole and the 2 nd installation groove, the clutch roller and the clutch member do not rotate, and only the shaft alone rotates.

The hinge device for a swing door is composed of the following components: a compression section that rotates the clutch member together with the shaft from an initial stop position to a preset 1 st angle when the shaft rotates forward by an external force, and compresses the torsion spring; a natural stop section for allowing the shaft to freely rotate without compressing or releasing the torsion spring when the shaft is rotated in a forward direction or a reverse direction in a state exceeding the 1 st angle; a restoring section, in which the shaft is automatically reversed according to an elastic restoring force of the torsion spring to return to an initial stop position when the shaft is reversed toward the 1 st angle inner side in the natural stop section.

The 2 nd installation groove is formed at a position corresponding to the 1 st angle, the clutch roller is inserted and disposed into the 1 st installation groove and the through hole to rotate the shaft, the clutch roller, and the clutch member together in the compression section and the return section, and the clutch roller is inserted and disposed into the through hole and the 2 nd installation groove to rotate the shaft independently of the clutch roller and the clutch member in the natural stop section.

The depth of the 1 st mounting groove, the depth of the 2 nd mounting groove and the depth of the through hole are respectively smaller than the diameter of the clutch roller; a center point of the clutch roller is arranged outside the 1 st installation groove in a state that the clutch roller is inserted and arranged in the 1 st installation groove and the through hole; in a state that the clutch roller is inserted and disposed to the 2 nd mounting groove and the through hole, a center point of the clutch roller is arranged outside the 2 nd mounting groove.

When the shaft rotates forward and passes through the 1 st angle in a state that the clutch roller is inserted and arranged in the 1 st mounting groove and the through hole, the 1 st mounting groove, the through hole and the 2 nd mounting groove are communicated, and the clutch roller is separated from the 1 st mounting groove along with the rotation of the shaft and is inserted and arranged in the 1 st through hole and the 2 nd mounting groove; when the shaft is reversely rotated to pass through the 1 st angle in a state where the clutch roller is inserted and disposed in the 2 nd mounting groove and the through hole, the 1 st mounting groove, the through hole, and the 2 nd mounting groove are communicated, and the clutch roller drives the clutch member to rotate by an elastic restoring force of the torsion spring to be separated from the 1 st mounting groove and to be inserted and disposed in the 1 st through hole and the 2 nd mounting groove.

In the initial stop position, a reverse force is applied to the shaft in accordance with an elastic restoring force of the torsion spring.

The 1 st mounting groove is formed at an interval of 120 deg., the clutch roller is composed of 3, the 2 nd mounting groove is formed at an interval of 120 deg., and the 1 st angle is formed at an angle less than 90 deg. from an initial stop position.

The shell is composed of a 1 st shell and a 2 nd shell, the shaft is arranged in the 1 st shell, one end of the 2 nd shell is combined with the other end of the 1 st shell, the supporting component is assembled at the other end, and the torsion spring is arranged in the 2 nd shell; between one end and the other end of the clutch member, a boss protrusion is formed to protrude in a circumferential direction, and the boss protrusion is rotatable between the 1 st and 2 nd housings but prevented from moving linearly.

The through hole into which the clutch roller is inserted penetrates the chuck projection, and the chuck projection is formed with a recess groove for inserting the clutch roller into the through hole.

Further comprising: a bearing for wrapping the other end of the clutch member; one end of the bearing is engaged with an inner circumferential surface of one end of the 2 nd housing, and the locking projection is disposed between the bearing and the other end of the 1 st housing to be rotatable but prevented from moving linearly.

Further comprising: a height adjusting nut screw-coupled to one end of the housing; a height adjusting member having one end protruding to the outside of one end of the height adjusting nut and one end of the housing and the other end inserted and disposed between the height adjusting nut and the housing; a snap ring coupled to enable the height adjusting nut and the height adjusting member to move together along a length direction of the housing,

when the height adjusting nut rotates relative to the housing, the height adjusting member coupled by the snap ring moves along a length direction of the housing to adjust a distance from one end of the housing.

The height adjusting member is wrapped around one end of the housing, a 1 st bevel portion is formed on an outer circumferential surface of one end of the housing, a 2 nd bevel portion facing the 1 st bevel portion is formed on an inner circumferential surface of the height adjusting member, and when the height adjusting nut is rotated with respect to the housing, the height adjusting member coupled by the snap ring is linearly moved along a length direction of the housing without being rotated, so as to adjust a distance from the one end of the housing.

The damper portion includes: a blocking member having one end fixedly coupled to an inner circumferential surface of the 1 st cavity and the other end contacting an outer circumferential surface of the shaft; a paddle disposed between the shaft and the inner circumferential surface of the 1 st inner cavity,

when the shaft rotates, the paddle moves together with the shaft as contacting the inner circumferential surface of the 1 st inner cavity in a state where the blocking member is fixed to the housing; when the shaft rotates, the paddle changes the amount of movement of the oil filled in the 1 st cavity.

The blocking member is composed of a plurality of members and is spaced along an inner circumferential surface of the 1 st cavity.

A 1 st flow path is concavely arranged on the inner circumferential surface of the 1 st inner cavity along the circumferential direction of the shell; the blades are arranged along the length direction of the shaft; when the shaft rotates, the paddle moves a part where the 1 st flow path is not formed and a part where the 1 st flow path is formed along with the contact with the inner circumferential surface of the 1 st inner cavity; the oil moves through the 1 st flow path when the paddle is disposed in the portion where the 1 st flow path is formed, and the shaft rotates slower when the paddle is disposed in the portion where the 1 st flow path is not formed than when the paddle is disposed in the portion where the 1 st flow path is formed.

A 3 rd mounting groove for mounting the paddle is formed on the outer peripheral surface of the shaft; when the shaft rotates forwards, the blades are separated from the No. 3 mounting groove so that oil can move through the blades; when the shaft rotates reversely, the paddle abuts against the 3 rd mounting groove to prevent oil from moving between the paddle and the 3 rd mounting groove.

The No. 3 mounting groove consists of the following components: the arc-shaped 3 rd-1 th mounting groove; a 3-2 th mounting groove formed with a groove in the 3-1 rd mounting groove at a depth deeper than the 3-1 st mounting groove in a circumferential direction of the shaft,

the paddle is provided with a mounting protrusion mounted in the 3 rd-1 th mounting groove, the mounting protrusion is smaller than the 3 rd-1 th mounting groove and can move in the 3 rd-1 th mounting groove; when the shaft rotates forwards, the mounting bulge is extruded towards the 3 rd-2 mounting groove by oil and simultaneously communicates the 3 rd-1 mounting groove and the 3 rd-2 mounting groove, so that the blade is separated from the 3 rd mounting groove to enable the oil to move through the mounting groove; when the shaft rotates reversely, the mounting protrusion is pressed open in the direction opposite to the 3 rd-2 mounting groove by oil and abuts against the 3 rd-1 mounting groove, so as to prevent the oil from moving between the blade and the 3 rd mounting groove.

A bolt jack is formed in the center of the shaft, and an oil regulating bolt is assembled in the bolt jack; the shaft is formed with a flow dividing passage for communicating the bolt insertion hole with the outer peripheral surface, and the amount of communication between the flow dividing passage and the bolt insertion hole is changed by the oil adjusting bolt, thereby adjusting the amount of movement of oil by the flow dividing passage.

Or, the 1 st inner cavity inner peripheral surface along the circumferential direction of the said body, set up the 1 st flow path and 2 nd flow path separately each other concavely; the blades are arranged along the length direction of the shaft; when the shaft rotates, the paddle moves along with contacting the inner circumferential surface of the 1 st inner cavity to form the 1 st flow path and the 2 nd flow path; when the blade is disposed in a portion where the 1 st flow path and the 2 nd flow path are formed, the oil moves through the 1 st flow path and the 2 nd flow path; the shaft rotates slower when the paddle is disposed in a portion where the 1 st flow path and the 2 nd flow path are not formed than when the paddle is disposed in a portion where the 1 st flow path and the 2 nd flow path are formed.

At this time, the 2 nd flow path is formed on the inner peripheral surface of the 1 st lumen at an initial position where the shaft is not rotated; the 1 st flow path is formed on the inner circumferential surface of the 1 st cavity at a position where the shaft rotates by a certain angle and is separated from the 2 nd flow path; the depth of the 2 nd channel is deeper than the depth of the 1 st channel; when the shaft rotates reversely by the elastic restoring force of the torsion spring in a state where the paddle rotates normally together with the shaft, if the paddle is disposed at a portion where the 1 st flow path is formed, the shaft rotates at a medium speed; if the paddle is disposed at a portion where the 1 st flow path and the 2 nd flow path are not formed, the shaft rotationally moves at a low speed; if the paddle is disposed at a portion where the 2 nd flow path is formed, the shaft is returned to the original position while being rotationally moved at a high speed.

Advantageous effects

As described above, the hinge device for a swing door according to the present invention has the following effects.

The body object (refrigerator, etc.) can be rotated at different speeds when opening and closing the door body by rotating, so as to open and close the refrigerator door.

In addition, the door body which is opened by rotating the body object (such as a refrigerator) can still be kept in the opened state, so that when articles are put into or taken out of the body object, a user does not need to intervene the door body, and the articles are convenient to put in or take out.

Particularly, the invention adopts a non-rotating natural stopping mode in the section beyond the 1 st angle if no external force is applied, and can automatically rotate within the 1 st angle, thereby facilitating the closing of the door body through automatic rotation.

Further, when the height adjusting nut is rotated, the height adjusting member disposed inside is linearly moved in the longitudinal direction without being rotated, and thus, the height of the refrigerator door can be easily adjusted.

The blocking member is composed of a plurality of spaced parts, so that the airtightness can be improved to block the oil filled in the No. 1 inner chamber from moving through the blocking member when the blade moves along with the rotation of the shaft, thereby preventing a damping force generated when the oil moves through the blocking member from being lowered.

Since the catch projection is formed with the escape groove, the clutch roller can be easily inserted and assembled into the through hole even in a state where the clutch member is assembled into the housing.

Drawings

Fig. 1 is a structural view of a hinge device for a swing door according to a first embodiment of the present invention when it is assembled to a refrigerator.

Fig. 2 is an oblique view of a hinge device for a swing door according to a first embodiment of the present invention.

Fig. 3 is a one-directional exploded oblique view of a hinge device for a swing door according to a first embodiment of the present invention.

Fig. 4 is another direction exploded oblique view of the hinge device for the swing door according to the first embodiment of the present invention.

Fig. 5 is an oblique view illustrating a coupling state of clutch members of a shaft of a hinge device for a rotary door according to a first embodiment of the present invention.

Fig. 6 is a sectional view taken along line a-a in fig. 2.

Fig. 7 is a sectional view taken along line B-B in fig. 2.

Fig. 8 is a schematic view illustrating operations at different angles when the hinge device for a swing door according to the first embodiment of the present invention is rotated.

Fig. 9 is a sectional view illustrating a process of forward rotation of the shaft of the hinge device for a rotary door according to the first embodiment of the present invention in fig. 7.

Fig. 10 is a sectional view illustrating a process in which the shaft of the hinge device for a rotary door according to the first embodiment of the present invention in fig. 9 is reversed.

Fig. 11 is an operational process diagram of the height adjusting nut and the height adjusting member according to the first embodiment of the present invention.

Fig. 12 is a sectional view taken along line C-C in fig. 2.

Fig. 13 is a sectional view showing a state of a damper portion in the process of normal rotation of the shaft of the hinge device for a rotary door according to the first embodiment of the present invention in fig. 12.

Fig. 14 is a sectional view showing a state of a damper portion in the process of normal rotation of the shaft of fig. 13.

Fig. 15 is an oblique view of a hinge device for a swing door according to a second embodiment of the present invention.

Fig. 16 is a one-directional exploded oblique view of a hinge device for a swing door according to a second embodiment of the present invention.

Fig. 17 is another direction exploded oblique view of the hinge device for a swing door according to the second embodiment of the present invention.

Fig. 18 is an oblique view illustrating a coupling state of clutch members of a shaft of a hinge device for a rotary door according to a second embodiment of the present invention.

Fig. 19 is a perspective view illustrating a state in which a clutch roller is inserted into a through hole in the hinge device for a rotary door according to the second embodiment of the present invention.

Fig. 20 is a sectional view taken along line D-D in fig. 15.

Fig. 21 is a sectional view taken along line E-E in fig. 15.

Fig. 22 is a schematic view showing different angle operations when the swing door hinge device according to the second embodiment of the present invention is rotated.

Fig. 23 is an operational process diagram of a height adjusting nut and a height adjusting member according to a second embodiment of the present invention.

Fig. 24 is a sectional view taken along line F-F in fig. 15.

Fig. 25 is a sectional view showing a state of a damper portion in the process of normal rotation of the shaft of the hinge device for a rotary door according to the second embodiment of the present invention in fig. 24.

Fig. 26 is a sectional view showing a state of the damper portion in the process of normal rotation of the shaft in fig. 25.

Description of the symbols

10: the housing 11: mounting groove 2: no. 1 casing

14: the 2 nd housing 15: 1 st flow path 16: no. 1 inner cavity

17: inner cavity 2, 18: 1 st bevel portion 19: 2 nd flow path

20: shaft 21: 1 st mounting groove 23: no. 3 mounting groove

24: 3-1 mounting groove 25: 3-2 mounting groove 26: bolt jack

27: flow dividing passage 29: oil regulating bolt

30: damper portion 31: the blocking member 32: blade

33: mounting boss

40: clutch member 41: through-hole 42: 1 st locking projection

43: the boss projection 43 a: the avoiding groove 45: clutch roller

50: the support member 52: 2 nd locking projection

60: torsion spring 65: bearing assembly

71: height adjusting nut 72: height adjusting member 72 a: 2 nd bevel part

73: snap ring

81: the door body 82: ontology object

Detailed Description

First embodiment

As shown in fig. 2 to 7, the hinge device for a swing door according to the present invention includes: the damper portion 30 includes a housing 10, a shaft 20, a damper portion 30, a clutch roller 45, a clutch member 40, a support member 50, and a torsion spring 60.

In the present invention, the housing 10 and the shaft 20 are rotated one with respect to the other depending on their assembling positions.

As shown in fig. 1, the housing 10 is generally fixedly mounted on an upper or lower portion of a revolving door 81, and the shaft 20 is connected to a body object (82, a refrigerator, etc.) that is hinge-coupled to the door 81, so that the housing 10 rotates with respect to the shaft 20 when the door 81 rotates.

In the first embodiment, for convenience of explanation, the description will be made on the premise that the shaft 20 rotates with respect to the housing 10.

Of course, it is also possible that the shaft 20 is fixed and the housing 10 rotates with respect to the shaft 20, the working process of which is the same as the technical structure and features to be achieved by the present invention.

The shell 10 is in a hollow column shape, a 1 st inner cavity 16 and a 2 nd inner cavity 17 which are communicated are formed inside the shell, and the 1 st inner cavity 16 is filled with oil.

The inner circumferential surface of the housing 10 is formed with a 2 nd installation groove 11 for installing the clutch roller 45.

The 2 nd mounting groove 11 is formed in a position where a 1 st angle with respect to the following is previously set, and an inner circumferential surface of the housing 10.

In this first embodiment, the housing 10 is formed by joining the 1 st housing 13 and the 2 nd housing 14 to each other.

The shaft 20 is disposed inside the 1 st housing 13.

The 2 nd case 14 has one end coupled to the other end of the 1 st case 13, the support member 50 attached to the other end, and the torsion spring 60 disposed therein.

In this first embodiment, the 1 st housing 13 is formed with the 1 st inner cavity 16 and a portion of the 2 nd inner cavity 17, and the 2 nd housing 14 is formed with a portion of the 2 nd inner cavity 17.

The 2 nd mounting groove 11 is formed on the inner circumferential surface of the other end of the 1 st housing 13.

The shaft 20 is inserted into the 1 st cavity 16, is fitted into the housing 10, more specifically, is rotatably fitted into the 1 st housing 13, and has one end protruding to the outside through one end of the housing 10 and the other end inserted into the 2 nd cavity 17.

The outer circumferential surface of the shaft 20 is spaced apart from the inner circumferential surface of the 1 st cavity 16, and oil is filled therebetween.

The shaft 20 has a 1 st mounting groove 21 formed on the outer circumferential surface of the other end thereof.

The damper unit 30 is attached to the 1 st cavity 16, and adjusts the amount of movement of the oil filled in the 1 st cavity 16 when the housing 10 and the shaft 20 rotate relative to each other.

More specifically, as shown in fig. 13 and 14, during the relative rotation of the housing 10 and the shaft 20, the amount of movement of the oil is changed by the damper portion 30, so that the relative rotation speed between the housing 10 and the shaft 20 is changed depending on the rotation section and/or the rotation direction.

When the shaft 20 or the housing 10 rotates, the damper portion 30 generates a damping force to reduce a rotational torque of the shaft 20 or the housing 10.

In particular, the damper unit 30 is disposed in the 1 st cavity 16 so that a damping force for damping a rotational torque of the shaft 20 or the housing 10 is different depending on a rotational direction when the shaft 20 or the housing 10 is rotated.

That is, the damper unit 30 generates different damping forces according to the rotation direction of the shaft 20 or the housing 10, so that the rotation torque generated when the shaft 20 or the housing 10 rotates is damped to have different magnitudes according to the rotation direction.

The general damper portion according to the conventional art generates the same damping force regardless of the rotation direction of the rotating body.

However, the differences of the present invention are: the damper portion 30 generates different damping forces according to the rotation direction of the shaft 20 or the housing 10, so that a difference occurs in the rotation speed according to the rotation direction when the shaft 20 or the housing 10 rotates.

In the first embodiment, since the shaft 20 rotates, the rotational speed of the shaft 20 can be changed by the damper portion 30 while the shaft 20 rotates.

Hereinafter, the structure of the damper portion 30 is described in detail.

The clutch roller 45 has a cylindrical shape and is inserted into the 1 st installation groove 21 from the 2 nd inner cavity 17.

One end of the clutch member 40 surrounds the other end of the shaft 20 in the 2 nd inner cavity 17, and the other end is protruded to form a 1 st locking protrusion 42.

Between one end and the other end of the clutch member 40, a boss protrusion 43 is formed to protrude in a circumferential direction, and as shown in fig. 6, the boss protrusion 43 can rotate between the 1 st housing 13 and the 2 nd housing 14, but a linear movement is prevented.

And, the other end of the clutch member 40 is fitted with a bearing 65 for wrapping the other end of the clutch member 40.

One end of the bearing 65 is engaged with and coupled to an inner circumferential surface of one end of the 2 nd housing 14, and the boss protrusion 43 is disposed between the bearing 65 and the other end of the 1 st housing 13 to be rotatable but prevented from moving linearly.

According to the above structure, the clutch member 40 and the bearing 65 can rotate inside the housing 10, but the linear movement is prevented.

One end of the clutch member 40 surrounding the shaft 20 is formed with: for inserting the through hole 41 in which the clutch roller 45 is disposed.

As shown in fig. 7, the through hole 41 communicates with the 1 st mounting groove 21 or the 2 nd mounting groove 11 according to the rotation of the shaft 20.

The clutch roller 45 inserted into the through hole 41 is disposed in the through hole 41 so as to be selectively inserted into the 1 st installation groove 21 or the 2 nd installation groove 11 according to the rotation speed of the shaft 20.

When the shaft 20 is rotated in a state where the clutch roller 45 is simultaneously inserted into the 1 st mounting groove 21 and the through hole 41, the rotational force of the shaft 20 is transmitted to the clutch member 40 through the clutch roller 45, and the clutch member 40 is rotated together with the shaft 20.

When the shaft 20 rotates in a state where the clutch roller 45 is simultaneously inserted into the through hole 41 and the 2 nd mounting groove 11, the clutch roller 45 and the clutch member 40 do not rotate, and only the shaft 20 alone rotates.

In this first embodiment, the 1 st mounting grooves 21 are formed at intervals of 120 °, the clutch roller 45 is composed of 3, and the 2 nd mounting grooves 11 are formed at intervals of 120 °.

Unlike the first embodiment, the number and angle of the 1 st installation groove 21, the clutch roller 45 and the 2 nd installation groove 11 can be adjusted.

The supporting member 50 is disposed at the other end of the housing 10, specifically, at the other end of the 2 nd housing 14, and protrudes along the inner direction of the housing 10 to form a 2 nd locking protrusion 52.

The torsion spring 60 is disposed inside the housing 10, specifically, at the other end of the 2 nd housing 14, and has one end coupled to the 1 st locking protrusion 42 formed at the clutch member 40 and the other end coupled to the 2 nd locking protrusion 52 formed at the support member 50.

The torsion spring 60 applies a force to rotate the clutch member 40 in the reverse direction.

The torsion spring 60 is disposed in a state compressed to a certain extent even at an initial stop position at which the shaft 20 does not rotate, and at the initial stop position, a reaction force is applied to the shaft 20 by an elastic restoring force of the torsion spring 60.

Therefore, even in a state where no external force is applied, a reversing force can be applied to the shaft 20 to bring the door 81 into contact with the main body object 82.

The hinge device for a swing door according to the present invention is operated in a compression section, a natural stop section and a reset section.

The compression section compresses the torsion spring 60, and when the shaft 20 rotates forward by an external force, the clutch member 40 rotates together with the shaft 20 from the initial stop position to the preset 1 st angle, thereby compressing the torsion spring 60.

The 1 st angle may be less than 90 ° at the initial stop position.

In the drawings of the first embodiment, the 1 st angle is indicated as 75 ° and the initial stop position, that is, the range from 0 ° normal rotation to 75 ° is indicated as the compression range, by way of example, but the present invention is not limited thereto.

In the compression section, the clutch roller 45 is inserted into the through hole 41 and the 1 st mounting groove 21, and when the shaft 20 rotates, the shaft 20 and the clutch member 40 are coupled to each other by the clutch roller 45, the shaft 20, the clutch roller 45, and the clutch member 40 rotate together, the rotational force of the shaft 20 is transmitted to the clutch member 40, and the torsion spring 60 is compressed by the rotation of the clutch member 40.

The natural stop section is a section for freely rotating the shaft 20 without applying a force by the torsion spring 60, and the section allows the shaft 20 to freely rotate without compressing or releasing the torsion spring 60 when the shaft 20 rotates in the forward direction and/or the reverse direction in a state where the shaft 20 is beyond the 1 st angle.

In the drawings of this first embodiment, the 1 st angle, i.e., exceeding 75 ° to 180 °, is identified as a natural stop section.

The natural stopping section does not require the clutch roller 45 to be fitted into the 1 st mounting groove 21, but is inserted and disposed into the through hole 41 and the 2 nd mounting groove 11 at the same time, so that the shaft 20 rotates independently of the clutch roller 45 and the clutch member 40 when the shaft 20 rotates.

The return section is a section in which the rotating shaft 20 is returned by being reversed to an initial stop position, and when the shaft 20 is reversed toward the 1 st angle side in the natural stop section, the section automatically reverses the shaft 20 by an elastic restoring force of the torsion spring 60 to return to the initial stop position.

In the drawings of this first embodiment, the 1 st angle, that is, the section inverted from 75 ° to 0 °, is identified as the reset section.

In order to insert and dispose the clutch roller 45 into the 1 st mounting groove 21 and the 2 nd mounting groove 11 while the shaft 20 is rotated, the depth of the 1 st mounting groove 21, the depth of the 2 nd mounting groove 11, and the depth of the through hole 41 are set to be smaller than the diameter of the clutch roller 45, respectively.

In a state where the clutch roller 45 is inserted and disposed in the 1 st mounting groove 21 and the through hole 41, a center point of the clutch roller 45 is disposed outside the 1 st mounting groove 21; in a state where the clutch roller 45 is inserted and disposed in the 2 nd mounting groove 11 and the through hole 41, a center point of the clutch roller 45 is disposed outside the 2 nd mounting groove 11.

As described above, the center point of the clutch roller 45 is disposed outside the 1 st mounting groove 21 and the 2 nd mounting groove 11, so that the clutch roller 45 is easily moved to the 1 st mounting groove 21 and the 2 nd mounting groove 11 to be inserted therein when the shaft 20 is rotated.

More specifically, when the shaft 20 rotates in the normal direction and passes through the 1 st angle in a state where the clutch roller 45 is inserted and disposed in the 1 st mounting groove 21 and the through hole 41, the 1 st mounting groove 21, the through hole 41, and the 2 nd mounting groove 11 are communicated with each other.

At this time, the clutch roller 45 having a center point located outside the 1 st mounting groove 21 is separated from the 1 st mounting groove 21 by the rotation of the shaft 20, and is inserted into and disposed in the 1 st through hole 41 and the 2 nd mounting groove 11.

In a state where the clutch roller 45 is inserted and disposed in the 2 nd mounting groove 11 and the through hole 41, when the shaft 20 rotates in the reverse direction and passes through the 1 st angle, the 1 st mounting groove 21, the through hole 41, and the 2 nd mounting groove are communicated with each other.

At this time, the clutch roller 45 having the center point positioned outside the 2 nd installation groove 11 is separated from the 1 st installation groove 21 by the reverse rotation of the clutch member 40 according to the elastic restoring force of the compressed torsion spring 60, and is inserted into and disposed in the 1 st through hole 41 and the 2 nd installation groove 11.

In order to limit the rotation angle of the shaft 20, a long rotation groove is formed in the outer circumferential surface of the shaft 20 along the circumferential direction.

Further, in the housing 10, one end is fitted with: a stopper inserted into the rotation groove.

Due to the rotation groove and the stopper, when the shaft 20 rotates, the shaft 20 is caught by the stopper inserted into the rotation groove, and the rotation angle is restricted.

In addition, the damper portion 30 includes a blocking member 31 and a blade 32.

As shown in fig. 12, one end of the blocking member 31 is fixedly coupled to the inner circumferential surface of the 1 st cavity 16, and the other end contacts the outer circumferential surface of the shaft 20, so that the oil filled in the 1 st cavity 16 is prevented from moving through the blocking member 31.

Therefore, when the shaft 20 rotates, the blocking member 31 is fixed to the housing 10, and thus, the oil filled in the 1 st cavity 16 is blocked by the blocking member 31 to generate hydraulic pressure when moving through the shaft 20.

The paddle 32 is disposed between the shaft 20 and the inner circumferential surface of the 1 st cavity 16, and changes the amount of movement of the oil filled in the 1 st cavity 16 when the housing 10 and the shaft 20 rotate relative to each other.

When the shaft 20 rotates, the paddle 32 moves together with the shaft 20 while contacting the inner circumferential surface of the 1 st inner cavity 16.

The shaft 20 has formed on its outer peripheral surface: and a 3 rd mounting groove 23 for mounting the paddle 32.

When the shaft 20 is rotated in the normal direction, the paddle 32 is spaced from the 3 rd installation groove 23 so that oil can move therethrough.

When the shaft 20 rotates reversely, the paddle 32 abuts against the 3 rd mounting groove 23 to prevent oil from moving between the paddle 32 and the 3 rd mounting groove 23.

As shown in fig. 5 and 12, the 3 rd installation groove 23 is composed of a 3 rd-1 installation groove 24 and a 3 rd-2 installation groove 25.

The 3 rd to 1 th mounting groove 24 is formed of an arc-shaped groove and is recessed on the outer circumferential surface of the shaft 20 along the longitudinal direction of the shaft 20.

The 3 rd-2 th mounting groove 25 is formed in the 3 rd-1 th mounting groove 24 with a deeper depth than the 3 rd-1 th mounting groove 24 in the circumferential direction of the shaft 20.

The size of the 3 rd to 2 nd mounting groove 25 is smaller than that of the 3 rd to 1 st mounting groove 24.

Further, the paddle 32 is formed with: and a mounting projection 33 mounted to the 3 rd to 1 st mounting groove 24.

The mounting projection 33 is smaller than the 3 rd-1 mounting groove 24 and can move in the 3 rd-1 mounting groove 24.

As shown in fig. 13, when the shaft 20 rotates forward, the mounting protrusion 33 is pushed open toward the 3 rd to 2 nd mounting groove 25 by oil, and communicates the 3 rd to 1 th mounting groove 24 and the 3 rd to 2 nd mounting groove 25, so that the blade 32 is spaced apart from the 3 rd mounting groove 23 to facilitate the movement of oil therethrough.

As shown in fig. 14, when the shaft 20 rotates reversely, the mounting protrusion 33 is pushed open in the direction opposite to the 3 rd to 2 nd mounting groove by oil and abuts against the 3 rd to 1 st mounting groove 24 to prevent oil from moving between the paddle 32 and the 3 rd mounting groove 23.

Due to the paddle 32 and the 3 rd installation groove 23, a difference occurs in damping force when the shaft 20 rotates forward and backward.

The 1 st flow path 15 is recessed along the circumferential direction of the housing 10 on the inner circumferential surface of the 1 st cavity 16.

When the shaft 20 rotates, the paddle 32 moves the portion where the 1 st flow path 15 is not formed and the portion where the 1 st flow path 15 is formed as it contacts the inner circumferential surface of the 1 st inner chamber 16.

When the paddle 32 is disposed in the portion where the 1 st flow path 15 is formed, the oil moves in the direction opposite to the paddle 32 through the 1 st flow path 15.

Therefore, if the paddle 32 is disposed at a portion where the 1 st flow path 15 is not formed when the shaft 20 rotates, the oil does not smoothly move, so that the rotation of the shaft 20 is slightly slow; if the paddle 32 is disposed at the portion where the 1 st flow path 15 is formed, the rotation of the shaft 20 is caused to be slightly faster due to the oil moving through the 1 st flow path 15.

Also, a bolt insertion hole 26 is formed at the center portion of the shaft 20, and an oil adjusting bolt 29 is fitted to the bolt insertion hole 26.

The shaft 20 is formed with: a flow dividing passage 27 for communicating the bolt insertion hole 26 with the outer peripheral surface, and the amount of communication between the flow dividing passage 27 and the bolt insertion hole 26 is changed by the oil adjusting bolt 29, thereby adjusting the amount of movement of the oil by the flow dividing passage 27.

That is, when the housing 10 and the shaft 20 rotate relative to each other, the oil filled in the 1 st cavity 16 moves in the opposite direction through the flow dividing passage 27 and the bolt insertion hole 26, and a damping force is generated.

The invention also includes: a height adjustment nut 71, a height adjustment member 72, and a snap ring 73.

The height adjusting nut 71 is screw-coupled to an outer circumferential surface of one end of the 1 st housing 13.

One end of the height adjusting member 72 protrudes to the outside of one end of the height adjusting nut 71 and one end of the housing 10, and the other end is inserted and disposed between the height adjusting nut 71 and the housing 10.

The snap ring 73 is disposed between the height adjusting nut 71 and the height adjusting member 72, and moves the height adjusting nut 71 and the height adjusting member 72 together along the longitudinal direction of the housing 10.

As shown in fig. 11, when the height adjustment nut 71 is rotated with respect to the housing 10, the height adjustment nut 71 moves along the longitudinal direction of the housing 10 due to the screw coupling of the height adjustment nut 71 to the housing 10.

At this time, the height adjusting member 72 coupled to the height adjusting nut 71 by the snap ring 73 moves in the longitudinal direction of the housing 10 and adjusts the distance from one end of the housing 10.

Through the above process, when the housing 10 is assembled to a refrigerator door or the like in a vertical configuration, the height adjusting member 72 moves along the length direction of the housing 10 to adjust the distance between the housing 10 and a body object, i.e., a refrigerator body, thereby adjusting the overall height of the hinge device.

Hereinafter, the operation of the present invention composed of the above-described structure will be described in detail.

As shown in fig. 8, in the first embodiment, the shaft 20 is located at a compression section in a clockwise direction of 0 ° to 75 °, and the compression section compresses the torsion spring 60 according to an external force and simultaneously performs a forward rotation; the section exceeding 75 ° is a natural stop section which allows the shaft 20 to rotate independently and freely; the counterclockwise direction of 75 ° to 0 ° is a reset section which automatically reverses the shaft 20 according to the elastic restoring force of the compressed torsion spring 60.

Also, when the paddle 32 contacts the inner circumferential surface of the casing 10 where the 1 st flow path 15 is not formed, the shaft 20 rotates more slowly.

Hereinafter, the states of the respective structures formed according to the rotation of the shaft 20 of the present invention will be described in detail.

In the initial stop position where the shaft 20 is not rotated, as shown in fig. 9(a), the clutch roller 45 is inserted into the through hole 41 and the 1 st installation groove 21.

At this time, the torsion spring 60 generates a force to rotate the shaft 20 in the reverse direction.

As shown in fig. 13(a), the paddle 32 is disposed adjacent to the blocking member 31.

In this state, when the shaft 20 rotates in the normal direction by an external force, the clutch member 40 is rotated together with the clutch roller 45 inserted into the 1 st installation groove 21 of the shaft 20, as shown in fig. 9 (b).

At this time, the torsion spring 60 coupled to the clutch member 40 is gradually further compressed as the clutch member 40 rotates.

With further rotation, the shaft 20 reaches a section where the 1 st mounting groove 21, the through hole 41 and the 2 nd mounting groove 11 communicate with each other, i.e., the 1 st angle, which is 75 ° in the first embodiment.

That is, when the shaft 20 rotates in the normal direction, the shaft 20 and the clutch member 40 rotate together to the 1 st angle by the clutch roller 45 and compress the torsion spring 60.

In this state, when the shaft 20 is further rotated in the normal direction, as shown in fig. 9(c), the clutch roller 45 is pushed away by the rotation of the shaft 20 to be separated from the 1 st mounting groove 21, and a part of the clutch roller passes through the through hole 41 and moves to the 2 nd mounting groove 11.

As the clutch roller 45 is inserted into the through hole 41 and the 2 nd installation groove 11, the clutch member 40 is caught by the clutch roller 45 to the housing 10 and is not rotated any more.

Therefore, as shown in fig. 9(c) to (d), as the shaft 20 rotates beyond the 1 st angle, the clutch roller 45 is completely separated from the 1 st mounting groove 21 and inserted and disposed in the through hole 41 and the 2 nd mounting groove 11, thereby forming a natural stop section in which the rotational force of the shaft 20 is not transmitted to the clutch member 40 even if the shaft 20 rotates.

Then, as shown in fig. 9(e) to (f), even if the shaft 20 rotates to 180 °, the rotational force of the shaft 20 is not transmitted to the clutch member 40 and the clutch roller 45, so that the clutch member 40 and the clutch roller 45 do not rotate and only the shaft 20 rotates without acting on the torsion spring 60.

At this time, since the clutch member 40 is caught by the clutch roller 45 by the clutch member 40 due to the reverse force applied to the clutch member 40 by the torsion spring 60, the clutch member 40 can be maintained in a rotated state up to the 1 st angle even if the reverse force is applied by the torsion spring 60.

Further, since the center point of the clutch roller 45 is located outside the 2 nd installation groove 11, even if a force to move the clutch roller 45 from the 2 nd installation groove 11 to the inner side is applied according to the reverse force of the clutch member 40 by the torsion spring 60, the clutch roller 45 is caught by the outer circumferential surface of the shaft 20 and is inserted and disposed in the through hole 41 and the 2 nd installation groove 11.

As described above, the shaft 20 can freely perform the normal rotation and the reverse rotation in a natural stop manner since the 1 st angle at which the 2 nd mounting groove 11 is formed.

When the shaft 20 rotates in the normal direction and rotates in the reverse direction by an external force in a state where the shaft 20 exceeds the 1 st angle, only the shaft 20 rotates freely without the elastic restoring force of the torsion spring 60 as shown in fig. 10(a) to (c).

In this process, as shown in fig. 13 and 14, the oil filled in the 1 st cavity 16 is pushed apart by the rotation of the shaft 20 and the paddle 32, and generates some damping force while moving through the 1 st flow path 15, the 3 rd mounting groove 23, and the like.

When the shaft 20 rotates in the normal direction, as shown in fig. 13, the oil pushed and moved by the paddle 32 moves through the 3 rd mounting groove 23, and when the paddle 32 reaches the portion where the 1 st flow path 15 is formed, the oil further moves through the 1 st flow path 15), thereby slightly facilitating the rotation of the shaft 20.

Then, as shown in fig. 10(d), when the shaft 20 is further reversely rotated so that the 1 st installation groove 21 communicates with the through hole 41, the clutch roller 45 is moved from the 2 nd installation groove 11 to the inner side direction according to the reverse rotation force of the clutch member 40 by the torsion spring 60, and when the shaft 20 reaches the 1 st angle, the clutch roller 45 is gradually separated from the 2 nd installation groove 11 to be gradually inserted into and installed in the through hole 41 and the 1 st installation groove 21.

From this, the clutch roller 45 is disengaged from the 2 nd mounting groove 11, and the clutch member 40 is reversed by a reversing force generated by an elastic restoring force of the torsion spring 60 acting on the clutch member 40.

As a reversing force is applied to the clutch member 40 by the torsion spring 60, as shown in fig. 10(e), the clutch member 40 forms: a reset section that is automatically reversed together with the shaft 20 by the clutch roller 45.

Accordingly, as shown in fig. 10(f), the shaft 20 is returned to the initial stop position according to the elastic restoring force of the torsion spring 60.

As the shaft 20 rotates in the reverse direction, the oil filled in the 1 st cavity 16 is pushed away by the rotation of the shaft 20 and the paddle 32, as shown in fig. 14.

At this time, when the shaft 20 rotates reversely, the paddle 32 abuts against the 3 rd to 1 st mounting groove 24 to prevent the 3 rd to 1 st mounting groove 24 and the 3 rd to 2 nd mounting groove 25 from communicating with each other, thereby blocking the oil from moving between the paddle 32 and the 3 rd mounting groove 23.

When the paddle 32 contacts the inner circumferential surface of the casing 10 from the portion where the 1 st flow path 15 is formed, oil moves through the 1 st flow path 15, and therefore, the shaft 20 rotates in reverse slightly faster; then, when the paddle 32 reaches the gate where the 1 st flow path 15 is not formed, the shaft 20 slowly rotates reversely.

As described above, the present invention can be used by being assembled to a refrigerator door, etc.

When the body object (82, refrigerator body) is assembled with the housing 10 and the shaft 20 is connected to the revolving door, the shaft 20 is forcibly rotated to the preset 1 st angle by the user according to the external force in order to open the refrigerator door 81; in the other angle sections exceeding the 1 st angle, the rotation is carried out by adopting a natural stopping mode without automatic rotation; when the rotating shaft 20 reaches the preset 1 st angle to close the refrigerator door 81, the shaft 20 and the refrigerator door 81 are automatically rotated and closed by the elastic restoring force of the torsion spring 60.

As described above, the present invention rotates the shaft 20 and the refrigerator door in a natural stop manner in a section exceeding the 1 st angle, so that it is not necessary for a user to hold the refrigerator door with a hand in a state exceeding the 1 st angle, and the refrigerator door can be kept in an open state, and thus, in a state where the refrigerator door is opened, it is possible to hold heavy and bulky articles with both hands, or it is easy to put numerous articles into or take numerous articles out of the refrigerator, and when the door reaches the 1 st angle by reversing, it is convenient to automatically close the refrigerator door.

In contrast, the body object 82 may be connected to the shaft 20, and the door 81 may be assembled with the housing 10, and at this time, the housing 10 may be rotated.

The hinge device for the rotary door according to the present invention is applicable to a refrigerator, and may be applied to a washing machine, a laundry care machine, a glass door, a door, etc., which are mounted to rotate a door body.

Second embodiment

The second embodiment differs from the first embodiment in part of the structure, and is described based thereon.

As shown in fig. 16 to 19, one end of the clutch member 40 surrounding the shaft 20 is formed with: the through hole 41 for inserting and arranging the clutch roller 45, the through hole 41 for inserting the clutch roller 45 penetrates the cassette boss 43, and the cassette boss 43 is formed with a recess groove 72a, and the recess groove 72a is used for inserting the clutch roller 45 into the through hole 41.

As shown in fig. 19, even in a state where the clutch member 40 is mounted to the housing 10, the clutch roller 45 is easily inserted into and mounted to the through hole 41 through the escape groove 72a, and thus the assembly is easy.

In the present embodiment, as shown in fig. 24, the blocking member 31 is composed of a plurality of members and is spaced along the inner circumferential surface of the 1 st cavity 16.

As described above, since the blocking member 31 is formed of a plurality of spaced parts, as shown in fig. 25 and 26, it is possible to improve airtightness to prevent the oil filled in the 1 st cavity 16 from moving through the blocking member 31 when the paddle 32 moves along with the rotation of the shaft 20, thereby preventing a damping force generated when the oil moves through the blocking member 31 from being lowered.

Also, the second embodiment is different from the first embodiment in that: the paddle 32 is not formed with a mounting projection.

And, the paddle 32 is installed in the 3 rd-1 installation groove 24, and the diameter of the paddle 32 is smaller than that of the 3 rd-1 installation groove 24, so that the paddle 32 can move in the 3 rd-1 installation groove 24.

As shown in fig. 25, when the shaft 20 rotates forward, the paddle 32 is pushed toward the 3 rd to 2 nd mounting groove 25 by oil and communicates the 3 rd to 1 st mounting groove 24 and the 3 rd to 2 nd mounting groove 25, so that the paddle 32 is spaced from the 3 rd mounting groove 23 to facilitate the movement of oil therethrough.

As shown in fig. 26, when the shaft 20 rotates in the reverse direction, the paddle 32 is pushed open in the reverse direction of the 3 rd to 2 nd mounting groove by oil and abuts against the 3 rd to 1 st mounting groove 24, thereby preventing the oil from moving between the paddle 32 and the 3 rd mounting groove 23.

As shown in fig. 24 to 26, the 1 st flow path 15 and the 2 nd flow path 19 are recessed along the circumferential direction of the housing 10 at a distance from each other on the inner circumferential surface of the 1 st cavity 16.

When the shaft 20 rotates, the paddle 32 moves the portions where the 1 st flow path 15 and the 2 nd flow path 19 are formed as it contacts the inner circumferential surface of the 1 st inner chamber 16.

Since no flow path is provided between the 1 st flow path 15 and the 2 nd flow path 19, the paddle 32 only contacts the inner peripheral surface of the 1 st inner chamber 16 at this position.

When the paddle 32 is disposed in the portion where the 1 st flow path 15 and the 2 nd flow path 19 are formed, the oil can move in the direction opposite to the paddle 32 through the 1 st flow path 15 and the 2 nd flow path 19.

Therefore, if the paddle 32 is disposed at a portion where the 1 st and 2

nd flow paths

15 and 19 are not formed while the shaft 20 is rotating, the rotation of the shaft 20 is slightly slow because the oil does not move smoothly; if the paddles 32 are disposed at the portions where the 1 st and 2

nd flow paths

15 and 19 are formed, the rotation of the shaft 20 is slightly faster due to the movement of the oil through the 1 st and 2

nd flow paths

15 and 19.

In the second embodiment, as shown in fig. 24, the 2 nd flow path 19 is formed on the inner peripheral surface of the 1 st cavity 16 at an initial position where the shaft 20 is not rotated; the 1 st channel 15 is formed on the inner circumferential surface of the 1 st cavity 16 at a position where the shaft 20 rotates by a predetermined angle, being spaced apart from the 2 nd channel 19; the depth of the 2 nd channel 19 is greater than the depth of the 1 st channel 15.

Therefore, as shown in fig. 22, when the shaft 20 rotates in the reverse direction by the elastic restoring force of the torsion spring 60 in a state where the paddle 32 rotates in the normal direction together with the shaft 20, if the paddle 32 is disposed at a position where the 1 st flow path 16 is formed, the shaft 20 rotates at a medium speed (mode speed); if the paddle 32 is disposed at a position where the 1 st flow path 16 and the 2 nd flow path 19 are not formed, the shaft 20 is rotationally moved at a low speed (low speed); if the paddle 32 is disposed at a position where the 2 nd flow path 19 is formed, the shaft 20 is rapidly rotated and moved at a high speed (high speed) and is rapidly returned to the home position.

As shown in fig. 16, 17 and 23, in adjusting the height of the height adjusting nut 71, a 1 st groove portion 18 is formed on the outer peripheral surface of one end of the housing 10, and a 2 nd groove portion 72a facing the 1 st groove portion 18 is formed on the inner peripheral surface of the height adjusting member 71.

Due to the 1 st and 2

nd slope parts

18 and 72a, when the height adjusting nut 71 is rotated with respect to the housing 10, the height adjusting member 71 coupled by the snap ring 73 is linearly moved in the longitudinal direction of the housing 10 without being rotated, thereby adjusting the distance from one end of the housing 10.

Through the above process, the housing 10 is vertically assembled to a refrigerator door or the like, and linearly moves along the length direction of the housing 10 without the rotation of the height adjusting member 72 by the height adjusting nut 71, so as to adjust the distance between the housing 10 and the body object 82, i.e., the refrigerator body, thereby adjusting the overall height of the hinge device and easily adjusting the height of the door body.

As shown in fig. 22, in the second embodiment, the shaft 20 is located at a compression section in a clockwise direction of 0 ° to 75 °, and the compression section compresses the torsion spring 60 according to an external force and simultaneously performs a forward rotation; the section exceeding 75 ° is a natural stop section which allows the shaft 20 to rotate independently and freely; the counterclockwise direction of 75 ° to 0 ° is a reset section which automatically reverses the shaft 20 according to the elastic restoring force of the compressed torsion spring 60.

Also, when the paddle 32 contacts only the inner circumferential surface of the casing 10 where the 1 st flow path 15 and the 2 nd flow path 19 are not formed, the shaft 20 rotates more slowly.

In the present invention, as can be seen from the state of each structure formed by the rotation of the shaft 20, the operational relationship of the clutch roller 45 when the shaft 20 rotates in the normal direction and in the reverse direction is the same as that of the first embodiment, and the detailed description thereof will be omitted and the damper unit 30 will be mainly described.

In the initial stop position in which the shaft 20 does not rotate, as shown in fig. 25(a), the paddle 32 is disposed adjacent to the blocking member 31 and faces the 2 nd flow path 19.

When the shaft 20 rotates in the normal direction and in the reverse direction, as shown in fig. 25 and 26, the oil filled in the 1 st cavity 16 is pushed away by the rotation of the shaft 20 and the paddle 32, and generates some damping force while moving through the 1 st flow path 15, the 2 nd flow path 19, the 3 rd mounting groove 23, and the like.

As described above, the rotational speed of the shaft 20 varies due to the damping force of the oil.

When the shaft 20 rotates in the normal direction, as shown in fig. 25, the oil pushed and moved by the paddle 32 moves through the 3 rd mounting groove 23, and when the paddle 32 reaches the portion where the 1 st flow path 15 is formed, the oil moves more through the 1 st flow path 15, so that the rotation of the shaft 20 is slightly facilitated.

As shown in fig. 26, as the shaft 20 rotates in the reverse direction, the oil filled in the 1 st cavity 16 is pushed away by the rotation of the shaft 20 and the paddle 32.

At this time, when the shaft 20 rotates reversely, the paddle 32 abuts against the 3 rd to 1 st mounting groove 24 to prevent the 3 rd to 1 st mounting groove 24 and the 3 rd to 2 nd mounting groove 25 from communicating with each other, thereby preventing oil from moving between the paddle 32 and the 3 rd mounting groove 23.

Also, when the paddle 32 contacts the inner circumferential surface of the housing 10 at the portion where the 1 st flow path 15 and the 2 nd flow path 19 are formed, the shaft 20 is more quickly inverted due to the oil moving through the 1 st flow path 15 and the 2 nd flow path 19.

More specifically, as shown in fig. 26(a), the shaft 20 is free to rotate in the normal direction and the reverse direction.

When the shaft 20 is reversely rotated and enters the reset section, as shown in fig. 26(b), if the blade 32 is disposed at a position where the 1 st flow path 16 is formed, the shaft 20 is rotated at a medium speed (mode speed); as shown in fig. 26(c), if the paddle 32 is disposed at a position where the 1 st flow path 16 and the 2 nd flow path 19 are not formed, the shaft 20 is rotated at a low speed (low speed); as shown in fig. 26(d), if the paddle 32 is disposed at a position where the 2 nd flow path 19 is formed, the shaft 20 is rapidly rotated and moved at a high speed (high speed) in the last inversion step, and is rapidly returned to the home position.

The other points are the same as those in the first embodiment, and a detailed description thereof will be omitted.

The hinge device for a swing door according to the present invention is not limited to the first embodiment, and various modifications may be made within the scope of the technical idea of the present invention.

Claims

1. A hinge device for a swing door, characterized in that:

the method comprises the following steps:

2. The hinge device for a swing door according to claim 1, wherein: the hinge device for a swing door is composed of the following components: a compression section that rotates the clutch member together with the shaft from an initial stop position to a preset 1 st angle when the shaft rotates forward by an external force, and compresses the torsion spring; a natural stop section for allowing the shaft to freely rotate without compressing or releasing the torsion spring when the shaft is rotated in a forward direction or a reverse direction in a state exceeding the 1 st angle; a restoring section which is returned to an initial stop position by the shaft being automatically reversed by an elastic restoring force of the torsion spring when the shaft is reversed toward the 1 st angle inside at the natural stop section,

the 2 nd mounting groove is formed at a position corresponding to the 1 st angle,

in the compression section and the reset section, the clutch roller is inserted into the 1 st mounting groove and the through hole to rotate the shaft, the clutch roller and the clutch member together,

in the natural stop section, the clutch roller is inserted into the through hole and the 2 nd mounting groove so that the shaft rotates independently of the clutch roller and the clutch member.

3. The hinge device for a swing door according to claim 2, wherein: the depth of the 1 st mounting groove, the depth of the 2 nd mounting groove and the depth of the through hole are respectively smaller than the diameter of the clutch roller; a center point of the clutch roller is arranged outside the 1 st installation groove in a state that the clutch roller is inserted and arranged in the 1 st installation groove and the through hole; a center point of the clutch roller is arranged outside the 2 nd mounting groove in a state that the clutch roller is inserted and disposed to the 2 nd mounting groove and the through hole; when the shaft rotates forward and passes through the 1 st angle in a state that the clutch roller is inserted and arranged in the 1 st mounting groove and the through hole, the 1 st mounting groove, the through hole and the 2 nd mounting groove are communicated, and the clutch roller is separated from the 1 st mounting groove along with the rotation of the shaft and is inserted and arranged in the 1 st through hole and the 2 nd mounting groove; when the shaft is reversely rotated to pass through the 1 st angle in a state where the clutch roller is inserted and disposed in the 2 nd mounting groove and the through hole, the 1 st mounting groove, the through hole, and the 2 nd mounting groove are communicated, and the clutch roller drives the clutch member to rotate by an elastic restoring force of the torsion spring to be separated from the 1 st mounting groove and to be inserted and disposed in the 1 st through hole and the 2 nd mounting groove.

4. The hinge device for a swing door according to claim 2, wherein: in the initial stop position, a reverse force is applied to the shaft in accordance with an elastic restoring force of the torsion spring.

5. The hinge device for a swing door according to claim 4, wherein: the 1 st mounting groove is formed at an interval of 120 deg., the clutch roller is composed of 3, the 2 nd mounting groove is formed at an interval of 120 deg., and the 1 st angle is formed at an angle less than 90 deg. from an initial stop position.

6. The hinge device for a swing door according to claim 1, wherein: the shell is composed of a 1 st shell and a 2 nd shell, the shaft is arranged in the 1 st shell, one end of the 2 nd shell is combined with the other end of the 1 st shell, the supporting component is assembled at the other end, and the torsion spring is arranged in the 2 nd shell; between one end and the other end of the clutch member, a boss protrusion is formed to protrude in a circumferential direction, and the boss protrusion is rotatable between the 1 st and 2 nd housings but prevented from moving linearly.

7. The hinge device for a swing door according to claim 6, wherein: the through hole into which the clutch roller is inserted penetrates the chuck projection, and the chuck projection is formed with a recess groove for inserting the clutch roller into the through hole.

8. The hinge device for a rotary door according to claim 7, wherein:

further comprising:

a bearing for wrapping the other end of the clutch member; one end of the bearing is engaged with an inner circumferential surface of one end of the 2 nd housing, and the locking projection is disposed between the bearing and the other end of the 1 st housing to be rotatable but prevented from moving linearly.

9. The hinge device for a swing door according to claim 1, wherein:

further comprising:

a height adjusting nut screw-coupled to one end of the housing;

a height adjusting member having one end protruding to the outside of one end of the height adjusting nut and one end of the housing and the other end inserted and disposed between the height adjusting nut and the housing;

a snap ring coupled to enable the height adjusting nut and the height adjusting member to move together along a length direction of the housing,

10. The hinge device for a swing door according to claim 9, wherein: the height adjusting member is wrapped around one end of the housing, a 1 st bevel portion is formed on an outer circumferential surface of one end of the housing, a 2 nd bevel portion facing the 1 st bevel portion is formed on an inner circumferential surface of the height adjusting member, and when the height adjusting nut is rotated with respect to the housing, the height adjusting member coupled by the snap ring is linearly moved along a length direction of the housing without being rotated, so as to adjust a distance from the one end of the housing.

11. The hinge device for a swing door according to claim 1, wherein:

12. The hinge device for a swing door according to claim 11, wherein: the blocking member is composed of a plurality of members and is spaced along an inner circumferential surface of the 1 st cavity.

13. The hinge device for a swing door according to claim 11, wherein: a 1 st flow path is concavely arranged on the inner circumferential surface of the 1 st inner cavity along the circumferential direction of the shell; the blades are arranged along the length direction of the shaft; when the shaft rotates, the paddle moves a part where the 1 st flow path is not formed and a part where the 1 st flow path is formed along with the contact with the inner circumferential surface of the 1 st inner cavity; the oil moves through the 1 st flow path when the paddle is disposed in the portion where the 1 st flow path is formed, and the shaft rotates slower when the paddle is disposed in the portion where the 1 st flow path is not formed than when the paddle is disposed in the portion where the 1 st flow path is formed.

14. The hinge device for a swing door according to claim 13, wherein: a 3 rd mounting groove for mounting the paddle is formed on the outer peripheral surface of the shaft; when the shaft rotates forwards, the blades are separated from the No. 3 mounting groove so that oil can move through the blades; when the shaft rotates reversely, the paddle abuts against the 3 rd mounting groove to prevent oil from moving between the paddle and the 3 rd mounting groove.

15. The hinge device for a swing door according to claim 14, wherein:

16. The hinge device for a swing door according to claim 15, wherein: a bolt jack is formed in the center of the shaft, and an oil regulating bolt is assembled in the bolt jack; the shaft is formed with a flow dividing passage for communicating the bolt insertion hole with the outer peripheral surface, and the amount of communication between the flow dividing passage and the bolt insertion hole is changed by the oil adjusting bolt, thereby adjusting the amount of movement of oil by the flow dividing passage.

17. The hinge device for a swing door according to claim 11, wherein: the inner circumferential surface of the 1 st inner cavity is provided with a 1 st flow path and a 2 nd flow path which are mutually separated and recessed along the circumferential direction of the shell; the blades are arranged along the length direction of the shaft; when the shaft rotates, the paddle moves along with contacting the inner circumferential surface of the 1 st inner cavity to form the 1 st flow path and the 2 nd flow path; when the blade is disposed in a portion where the 1 st flow path and the 2 nd flow path are formed, the oil moves through the 1 st flow path and the 2 nd flow path; the shaft rotates slower when the paddle is disposed in a portion where the 1 st flow path and the 2 nd flow path are not formed than when the paddle is disposed in a portion where the 1 st flow path and the 2 nd flow path are formed.

18. The hinge device for a swing door according to claim 17, wherein: the 2 nd flow path is formed on the inner peripheral surface of the 1 st cavity at an initial position where the shaft does not rotate; the 1 st flow path is formed on the inner circumferential surface of the 1 st cavity at a position where the shaft rotates by a certain angle and is separated from the 2 nd flow path; the depth of the 2 nd channel is deeper than the depth of the 1 st channel; when the shaft rotates reversely by the elastic restoring force of the torsion spring in a state where the paddle rotates normally together with the shaft, if the paddle is disposed at a portion where the 1 st flow path is formed, the shaft rotates at a medium speed; if the paddle is disposed at a portion where the 1 st flow path and the 2 nd flow path are not formed, the shaft rotationally moves at a low speed; if the paddle is disposed at a portion where the 2 nd flow path is formed, the shaft is returned to the original position while being rotationally moved at a high speed.

19. The hinge device for a swing door according to claim 17, wherein: a 3 rd mounting groove for mounting the paddle is formed on the outer peripheral surface of the shaft; when the shaft rotates forwards, the blades are separated from the No. 3 mounting groove so that oil can move through the blades; when the shaft rotates reversely, the paddle abuts against the 3 rd mounting groove to prevent oil from moving between the paddle and the 3 rd mounting groove.

20. The hinge device for a swing door according to claim 19, wherein: the No. 3 mounting groove consists of the following components: the arc-shaped 3 rd-1 th mounting groove; a 3-2 th mounting groove formed with a groove in the 3-1 rd mounting groove at a depth deeper than the 3-1 st mounting groove in a circumferential direction of the shaft,

the diameter of the paddle is smaller than that of the 3 rd to 1 st mounting groove, so that the paddle can move in the 3 rd to 1 st mounting groove 24,

when the shaft rotates forwards, the blade is pushed towards the 3 rd-2 mounting groove by oil and communicates with the 3 rd-1 mounting groove and the 3 rd-2 mounting groove at the same time, so that the blade is separated from the 3 rd mounting groove to enable the oil to move through the blade,

when the shaft rotates reversely, the paddle is pushed away towards the reverse direction of the 3 rd to 2 nd mounting groove due to oil and abuts against the 3 rd to 1 st mounting groove at the same time, so that the oil is prevented from moving between the paddle and the 3 rd mounting groove.