KR20160022757A

KR20160022757A - Door hinge apparatus

Info

Publication number: KR20160022757A
Application number: KR1020150012570A
Authority: KR
Inventors: 김철진; 김덕회; 김성우; 김금규
Original assignee: (주)세고스
Priority date: 2014-08-19
Filing date: 2015-01-27
Publication date: 2016-03-02

Abstract

The present invention relates to a door hinge apparatus.
According to the door hinge apparatus of the present invention, the supporting piece is detachably installed on one side of the base plate on the side of the hinge for opening and closing the door of the mounting structure. A low cam which is located at one side of the support member and engages with the projected camshaft of the base plate; An upper cam having a structure in contact with thelow cam and rotatably mounted on the low cam with a predetermined radius in accordance with the opening and closing operation of the door of the mounting structure and having a grease supply portion formed at a predetermined interval on the outer circumference side; A housing having a cam accommodating space formed therein so as to pivotally accommodate therein the low cam and the upper cam in a longitudinal direction; An elastic body provided in the cam receiving space of the housing to apply an elastic force to the upper cam; Thereby reducing the concentration of stress through the inherent shape of the cam receiving space, minimizing the possibility of breakage, and improving various functions such as abrasion resistance and noise prevention function through grease supply and demand.

Description

[0001] DOOR HINGE APPARATUS [0002]

More particularly, the present invention relates to a door hinge apparatus which is installed in various mounting structures such as a refrigerator and which is repeatedly opened and closed and is contained in a cam receiving space of a door side housing, The upper cam has a lower cam that is driven to engage with the upper cam and an elastic body that is contained in the cam accommodating space of the housing and gives an elastic force to the upper cam so that the outer peripheral edge of the upper cam, The present invention relates to a door hinge apparatus capable of improving various functions such as abrasion resistance and noise prevention function by supplying and receiving grease by minimizing the possibility of breakage by lowering the concentration of stress by being interfered with the periphery of the cam accommodating space and rotating with the housing .

2. Description of the Related Art [0002] In general, a door hinge for opening and closing a door is installed in a refrigerator or the like (hereinafter, referred to as a 'mounting structure'). The door hinge allows the contents to be introduced or discharged through a door opening / closing operation, Thereby preventing the cool air supplied to the inside from leaking to the outside, preventing external heat from flowing into the inside, and the like.

The door hinge installed in the above-described mounting structure has been developed and used in various ways such as having a function of preventing an impact from being excessively closed when the door is opened and closed in addition to the basic opening and closing operation.

For example, Korean Patent Laid-Open Publication No. 10-2006-0075659 (2006.07.04) discloses a refrigerator comprising a lower cam fixed to a hinge of a refrigerator main body, a lower cam positioned above the lower cam, A hinge device for a refrigerator door is disclosed which is provided with an upper cam provided with fixing protrusions protruded outwardly on both sides and a spring for applying an elastic force to the upper cam to maintain durability and airtightness.

However, according to the 'hinge device for a refrigerator door' disclosed in Korean Patent Laid-Open Publication No. 10-2006-0075659, since the stress is concentrated on the fixing protrusions protruding outward on both sides of the upper cam, There is a problem that the possibility of breakage is large.

Korean Patent No. 10-1064697 (September 6, 2011) Korean Patent No. 10-1219797 (2013.01.02)

SUMMARY OF THE INVENTION It is an object of the present invention to provide an upper cam which is installed in various mounting structures such as a refrigerator and is repeatedly opened and closed and is contained in a cam receiving space of a door side housing, A lower cam engaged with the upper cam and an elastic body provided in the cam accommodating space of the housing to apply an elastic force to the upper cam. Thus, when the housing is rotated during the door opening / closing operation of the mounting structure, Is provided with a door hinge device capable of enhancing various functions such as abrasion resistance and noise prevention function by minimizing the possibility of breakage by lowering the concentration of stress due to interference with the inner circumferential portion of the cam receiving space and rotating with the housing .

According to an aspect of the present invention, there is provided a door hinge apparatus comprising: a supporting piece detachably installed at a side of a base plate on a side of a hinge for opening and closing a door of a mounting structure; A lower cam positioned on one side of the support member and coupled to the projected camshaft of the base plate; An upper cam having a structure in contact with thelow cam and rotatably installed on the low cam in accordance with the opening and closing operation of the door of the mounting structure with a predetermined radius and having a grease supply portion spaced apart from the outer periphery side at regular intervals; A housing having a cam receiving space formed therein so as to pivotally receive the low cam and the upper cam in the longitudinal direction; An elastic body contained in the cam receiving space of the housing to apply an elastic force to the upper cam; Wherein the outer peripheral edge of the upper cam has a structure corresponding to an inner periphery of the cam receiving space of the housing and is contained in the cam receiving space of the housing, and when the housing rotates during the door opening / closing operation of the mounting structure, The edge portion is interfered with the periphery of the cam receiving space of the housing and rotates together with the housing, thereby lowering the concentration of stress and minimizing the possibility of breakage.

The inner periphery of the cam receiving space formed inside the housing and the outer periphery of the upper cam may be formed in a polygonal shape having a structure corresponding to each other in plan view.

Wherein the low cam is formed in a cylindrical shape having a predetermined height and is formed at a center portion of the body of the low cam so as to penetrate the body in the longitudinal direction and has a shape corresponding to the camshaft of the base plate; A tight groove formed on the outer periphery of the shaft coupling hole and having a symmetrical structure of a wide top and narrow bottom shape to be embedded in the base plate side; A cam groove formed in the cam groove and having a concave groove formed therebetween so as to protrude therebetween; As shown in FIG.

The upper cam is formed at a predetermined height to have a central portion penetrating through the upper cam. The upper cam is located at the center of the upper cam and is received in the longitudinal direction to receive the cam shaft of the base plate. A close contact portion formed on the outer side of the through hole and formed to protrude toward the low cam so as to be in close contact with the close contact groove, the contact having a structure corresponding to the fastening groove of the low cam; A grease supply unit disposed on the outer circumferential side of the close contact portion and configured to be recessed in the direction of the axis of rotation to be communicated in the longitudinal direction; As shown in FIG.

Preferably, the cam receiving space of the housing is closed by a lid.

A ring-shaped gap retaining member is provided between the low cam and the support piece, so that one side of the body of the low cam can be prevented from directly contacting the support piece.

As described above, according to the door hinge apparatus of the present invention, the door hinge apparatus is installed in various mounting structures such as a refrigerator and is contained in the cam receiving space of the door-side housing repeatedly opened and closed, And an elastic body provided in the cam accommodating space of the housing to apply an elastic force to the upper cam so that the outer peripheral edge of the upper cam when the housing rotates during the door opening and closing operation of the mounting structure It is possible to improve various functions such as abrasion resistance and noise prevention function through the supply and demand of grease by lowering the concentration of stress by minimizing the concentration of stress by being interfered with the periphery of the cam housing space of the housing and rotating with the housing.

1 is a perspective view showing a state in which a door hinge device according to the present invention is installed on a door side of a mounting structure.
2 is an exploded perspective view showing a disassembled state of the door hinge apparatus according to the present invention.
3 is a perspective view showing a state in which a low cam and an upper cam are in close contact with each other according to the present invention.
4 is a perspective view showing a state in which a low cam and an upper cam are separated from each other according to the present invention.
5 is a bottom perspective view of Fig.
6 is a perspective view illustrating a state of the door hinge device according to the present invention engaged.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The term is synonymous with the general meaning of the term as understood by one of ordinary skill in the art to which the present invention belongs and, if the term used herein conflicts with the general meaning of the term in question, In accordance with the definition, the same reference numerals throughout the specification denote like elements.

In addition, It is noted that the door hinge apparatus can be implemented in various embodiments, and is not limited to the embodiments described herein.

The door hinge device 100 according to the present invention includes a support piece 110 provided on a hinge portion 201 for opening and closing a door of a mounting structure 200, An upper cam 130 rotatably installed in contact with a low cam 120 low cam 120, a housing 140 housing the low cam 120 and the upper cam 130, And an elastic body 150 for applying an elastic force to the upper cam 130 in the housing 140.

The support piece 110 is detachably installed on one side of the base plate 202 on the side of the hinge part 201 for opening and closing the door of the mounting structure 200.

The shaft coupling hole 122 of the low cam 120 and the side wall of the upper cam 130 of the upper cam 130 constituting the door hinge device 100 are provided at one side of the base plate 202 of the mounting structure 200, A camshaft 204 which functions as a rotation axis of the low cam 120 and the upper cam 130 is protruded.

The supporting piece 110 is provided in a plate shape and a cam shaft accommodating space 112 is provided at one side so that the cam shaft 204 of the base plate 202 can penetrate and be embedded therein.

The bending piece 114 bent at the base plate 202 side of the mounting structure 200 is provided at one side of the supporting piece 110 so that the housing 140 is rotated at a predetermined radius, So that it is possible to prevent any further rotation due to contact.

The low cam 120 is located at one side of the support piece 110 and is coupled to the projected camshaft 204 of the base plate 202.

The lower cam 120 is formed in a cylindrical shape at a predetermined height and is in a state of being in close contact with the upper cam 130 provided at one side so as to guide the rotation of the upper cam 130 when the door of the mounting structure 200 is opened and closed .

The low cam 120 includes a shaft coupling hole 122 located at the center of the body 121 of the low cam 120, a closely coupled groove 123 located at the outer periphery of the shaft coupling hole 122, (124) during the cam rotation, which is structured so as to protrude with the pin (123) interposed therebetween.

The shaft coupling hole 122 is located at the center of the body 121 of the low cam 120, and is provided in a structure penetrating through the shaft 121 in the longitudinal direction.

The shaft coupling hole 122 is coupled to the camshaft 204 formed on one side of the base plate 202 and has a shape corresponding to the camshaft 204 and closely contacted with the camshaft 204 of the base plate 202 And may be rotated together with the rotation of the base plate 202 when the doors are opened and closed.

The concave groove 123 is located on the outer periphery of the shaft coupling hole 122 and is formed into a symmetrical shape symmetrical with the shape of a Wide Top and Narrow Bottom to be recessed toward the base plate 202 side.

The close contact groove 123 is provided in a shape corresponding to the close contact portion 133 so as to accommodate the close contact portion 133 of the upper cam 130.

Meanwhile, during the cam rotation, the inside 124 is formed so as to protrude in the direction of the upper cam 130 with the concave groove 123 interposed therebetween.

The inner part 124 of the cam 120 during the cam rotation rounds the boundary part between the horizontal surface 124a and the inclined surface 124b formed by the close concave groove 123 in the shape of the upper light bulb, So that the close contact portion 133 of the upper cam 130 held in the close contact groove 123 can be smoothly rotated off the close contact groove 123.

Shaped gap holding member 160 is provided between the low cam 120 and the support piece 110 to prevent the one side of the body 131 of the low cam 120 from directly contacting the support piece 110 .

The upper cam 130 has a structure in contact with the lower cam 120 and is installed so as to be rotatable with a predetermined radius on the lower cam 120 according to opening and closing operations of the door of the mounting structure 200.

The upper cam 130 has a structure in which a central portion is formed to pass through, and is provided at a predetermined height corresponding to the low cam 120.

The upper cam 130 includes a threaded hole 132 located at the center of the body 131 of the upper cam 130 and a contacted portion 133 located at the outer side of the threaded hole 132, And a grease supply portion 134 located on the outer peripheral side.

The upper end of the upper cam 130 is connected to the lower end of the upper cam 130. The upper end of the upper cam 130 is connected to the lower end of the upper cam 130, .

The closely protruding portion 133 has a structure corresponding to the close contact groove 123 of the row cam 120 and protrudes toward the row cam 120 so as to be close to the close contact groove 123.

The grease supply portion 134 is located on the outer peripheral side of the close contact portion 133 and serves to supply grease to the low cam 120 side.

The grease supply portion 134 is provided on the outer peripheral side of the close contact portion 133 in a shape that is recessed at a predetermined width in the direction of the hole 132 for the axis of flow as seen from a plan view and communicated in the longitudinal direction.

The grease supply unit 134 preferably has a large opening 134a to smoothly supply grease from the grease supply cylinder or the like. The injection port 134a is formed so as to communicate with the grease supply groove 134b for supplying the grease to the low cam 120 side.

The outer circumferential edge of the upper cam 130 is formed in a shape corresponding to the cam receiving space 142 of the housing 140 as viewed in plan view.

The housing 140 has a cam accommodating space 142 therein to rotatably accommodate the low cam 120 and the upper cam 130.

The cam receiving space 142 of the housing 140 may be formed in a polygonal shape, for example, a hexagonal shape or an octagonal shape in plan view, and is preferably formed in an octagonal shape.

When the cam receiving space 142 of the housing 140 is formed in an octagonal shape, the stress is not concentrated and the possibility of breakage can be lowered. Thus, the risk of breakage caused by the existing fixing protrusion Can be significantly reduced.

When the cam receiving space 142 of the housing 140 is formed in an octagonal shape, the outer circumferential edge of the upper cam 130, which is contained in the cam receiving space 142 of the housing 140, It may be preferable that the cam groove 142 is formed in a shape corresponding to the cam receiving space 142 of the housing 140 so as to be interfered with the space 142.

The elastic body 150 is contained in the cam receiving space 142 of the housing 140 and has one end in close contact with one surface of the body 131 of the upper cam 130 to apply an elastic force to the upper cam 130 .

One end of the elastic body 150 is inserted into the cam receiving space 142 of the housing 140 so as to be closely contacted with the body 131 of the upper cam 130 and then the opening of the cam receiving space 142 of the housing 140 So that the cover 144 is closed.

The cover 144 for sealing the opening of the cam receiving space 142 of the housing 140 may be formed in various ways such as a coupling method or a welding method through a fastening means B such as a bolt.

The door hinge device 100 according to the present invention having the above structure is installed in the cam housing space 142 of the door side housing 140 installed in various mounting structures 200 such as a refrigerator and repeatedly opened and closed, An upper cam 130 provided with a grip supply portion 134 on the side of the upper cam 130 and a lower cam 120 driven to engage with the upper cam 130 and a lower cam 120 housed in the cam accommodating space 142 of the housing 140, The outer circumferential edge of the upper cam 130 rotates in the direction of the cam 140 of the housing 140 when the housing 140 rotates during the door opening / closing operation of the mounting structure 200, It interferes with the periphery of the housing space 142 and rotates together with the housing 140 to reduce the concentration of stress to minimize the possibility of breakage and improve various functions such as abrasion resistance and noise prevention function through grease supply and demand.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the scope of the present invention is not limited to the disclosed exemplary embodiments. But should be construed as falling within the scope of the claims of the invention.

100: door hinge device, 110: supporting piece,
112: cam shaft accommodating space, 120: low cam,
121: low-cam body, 122: shaft coupling ball,
123: tight groove, 124: inner during camming,
124a: a horizontal plane, 124b: an inclined plane,
130: Upper Cam, 131: Upper cam body,
132: Forging water, 133:
134: Grease supply part, 134a: Inlet port,
134b: grease supply groove, 140: housing,
142: cam housing space, 150: elastic body,
160: spacing member, 200: mounting structure,
201: hinge portion, 202: base plate,
204: camshaft.

Claims

A support piece detachably installed on one side of the base plate on the side of the hinge for opening and closing the door of the mounting structure;
A low cam positioned at one side of the support member and coupled to the projected camshaft of the base plate;
An upper cam having a structure in contact with the low cam and rotatably installed on the low cam with a predetermined radius in accordance with the opening and closing operation of the door of the mounting structure and having a grease supply portion spaced apart from the outer circumference side at a predetermined interval, glass);
A housing having a cam receiving space formed therein so as to pivotally receive the low cam and the upper cam in the longitudinal direction;
An elastic body contained in the cam receiving space of the housing to apply an elastic force to the upper cam;
/ RTI >
The outer cam portion of the upper cam has a structure corresponding to an inner peripheral portion of the cam receiving space of the housing and is housed in the cam receiving space of the housing. When the housing rotates during the door opening / closing operation of the mounting structure, The door hinge device interferes with the periphery of the cam receiving space and rotates together with the housing to lower the stress concentration.

The method according to claim 1,
Wherein the inner periphery of the cam receiving space formed on the inner side of the housing and the outer periphery of the upper cam are formed in a polygonal shape having a structure corresponding to each other in plan view.

The method according to claim 1,
The low cam is provided in a cylindrical type having a predetermined height,
A shaft coupling hole formed in the center of the body of the low cam and passing through the shaft in the longitudinal direction and provided in a shape corresponding to the cam shaft of the base plate;
A tight groove formed on the outer periphery of the shaft coupling hole and having a symmetrical structure of a wide top and narrow bottom shape to be embedded in the base plate side;
A cam groove formed in the cam groove and having a concave groove formed therebetween so as to protrude therebetween;
And the door hinge device.

The method according to claim 1 or 3,
The upper cam is formed to have a predetermined height through a central portion thereof,
A shaft receiving hole located at a center portion of the upper cam and passing through the shaft in the longitudinal direction to receive the cam shaft of the base plate;
A close contact portion formed on the outer side of the through hole and formed to protrude toward the low cam so as to be in close contact with the close contact groove, the contact having a structure corresponding to the fastening groove of the low cam;
A grease supply unit disposed on the outer peripheral side of the close contact portion and disposed in the same line as viewed in a plan view,
And a door hinge device.

The method according to claim 1,
Wherein the cam receiving space of the housing is sealed by a lid.

The method according to claim 1,
And a ring-shaped gap retaining member is provided between the low cam and the support piece to prevent the one face of the body of the low cam from directly contacting the support piece.