KR20180021496A - Door Hinge Structure - Google Patents

Abstract

The present invention relates to a door hinge structure, which stops at 180 degrees when a door is opened to allow the door to be opened and allow the door to be closed at 0 degrees and allows the door to be automatically opened and closed at more than a predetermined angle. The door hinge structure comprises a first fixing unit (10), a second fixing unit (20) and a hinge unit (30). The first fixing unit (10) has a body part (11) and a pair of coupling pipes (14, 15) formed on one side surface of the body part (11) at an interval. The second fixing unit (20) is arranged to face the first fixing unit (10). The hinge unit is positioned between the pair of first and second fixing units (10, 20) to allow the first fixing unit (10) to be rotated and comprises an interlocking gear (31), rotation limiting gear (32), shaft (33), elastic member (34) and insertion pipe (38). The interlocking gear (31) is coupled to the inside of the coupling pipe (14) of the first fixing unit (10) to allow interlocking. The rotation limiting gear (32) is positioned to be engaged with the interlocking gear (31). The shaft (33) is positioned between the coupling pipes (13, 14) of the first fixing unit (10) while passing through the rotation limiting gear (32). The elastic member (34) is elastically supported by one side surface of the rotation limit gear (32). The insertion pipe (38) is inserted into the space between the coupling pipes (14, 15) of the first fixing unit (10) to be fixed to one side surface of a body part (21) of the second fixing unit (20) and allows the interlocking gear (31), rotation limiting gear (32), shaft (33) and elastic member (34) to be inserted thereinto.

Description

[0001] The present invention relates to a door hinge structure,

More particularly, the present invention relates to a door hinge structure. More particularly, the door is opened while the door is closed at 180 degrees when the door is opened and closed. When the door is closed at 0 degrees, And a closing operation is performed.

Generally, the door hinge is fixed to a pair of doors so that a smooth operation can be performed when the door is opened and closed.

Here, the conventional door hinge has a structure in which a pair of doors are connected and the door is easily rotated during opening and closing operations, which makes it difficult to keep the door open.

Since the conventional door hinge is configured to be freely rotatable, it is difficult to maintain the door in an opened state, and thus the door hinge is easily closed by weak wind or the like. When the wind is slightly stronger, when the door is closed, There arises a problem that the door frame collides with the door frame to increase noise.

In addition, when the door frame and the door frame are fixed to each other, they are coupled through a fastening member such as a screw, and are exposed to the outside so as to give an unusual impression on the appearance and become uncomfortable. Further, .

Korean Registered Utility Model No. 20-376907 (Notice: March 10, 2005)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems of the related art, and it is an object of the present invention to provide a door opening / And a door opening and closing operation is automatically performed when the angle exceeds a predetermined angle.

According to an aspect of the present invention, there is provided a method of manufacturing an electronic device, comprising: a first fixing unit having a body and a pair of coupling tubes spaced apart from each other on one side of the body; A second fixing unit disposed opposite the first fixing unit; An interlocking gear provided so as to be rotatable between the pair of first and second fixing units so as to be rotatable and engageable with each other in the coupling pipe of the first fixing unit, A shaft provided between the coupling gears of the first fixed unit and penetrating through the rotation restricting gear; an elastic member elastically urged from one surface of the rotation restricting gear; And a hinge unit which is fixed to one side surface of the body of the second fixed unit and has an insertion tube to which the interlocking gear, the rotation limiting gear, the shaft, and the elastic member are inserted.

In addition, the one coupling pipe, the interlocking gear, and one side of the shaft have a structure in which a locking pin is coupled and fixed so as to be interlocked with each other.

In addition, a cover is detachably coupled to the upper portions of the first and second fixing units.

A plurality of engaging projections are formed on the inner circumferential surface of the one coupling pipe at intervals, and a plurality of engaging grooves are formed on the outer peripheral surface of the cooperating gear at intervals along the circumferential direction, So that the engaging projection is engaged with the engaging projection formed on the inner peripheral surface of the coupling tube.

A plurality of engaging projections are formed on one surface of the interlocking gear so as to be spaced apart from each other. A plurality of teeth are formed on the outer circumferential surface of the rotation limiting gear at intervals along the circumferential direction. And a plurality of limiting protrusions are formed at intervals so as to engage with the engagement protrusions of the protrusion.

In addition, the limiting protrusions protruding from the rotation restricting gear have a structure in which they are formed one by one at an interval of 180 degrees which are opposed to each other.

A guide groove is formed in the inner circumferential surface of the insertion tube along the longitudinal direction and spaced apart in the circumferential direction, and a tooth portion of the rotation limiting gear is engaged with the guide groove.

In addition, the rotation limiting gear is slidably coupled along the longitudinal direction of the shaft, is guided along a guide groove formed along the longitudinal direction of the insertion tube inserted into the insertion tube, while being slid while being moved in the circumferential direction Has no structure.

As described above, the present invention is a door hinge structure to be installed in a door of a movable small refrigerator. The door hinge structure has an effect that the door can be opened and closed within a range of 180 degrees and automatically opened and closed when the door is opened over a predetermined angle.

In addition, according to the present invention, the edges of the body portion of the first and second fixing units constituting the door hinge structure are rounded, and the bent portions on the end sides of the respective covers of the first and second fixing units are rounded, .

Further, in the present invention, each component can be treated with stainless steel and die casting to prevent corrosion.

Further, the present invention is waterproofed to prevent water from penetrating into the interior of the door hinge structure, thereby preventing internal corrosion.

1 is an assembled perspective view of a door hinge structure according to an embodiment of the present invention.
2 is an exploded perspective view of FIG.
3 is a perspective view of an interlocking gear of a door hinge structure according to an embodiment of the present invention.
4 is a perspective view of a rotation limiting gear of a door hinge structure according to an embodiment of the present invention.
5 is a front view of an interlocking gear of a door hinge structure according to an embodiment of the present invention.
6 is a front view of a rotation limiting gear of a door hinge structure according to an embodiment of the present invention.
7 is a cross-sectional view of a door hinge structure according to an embodiment of the present invention.
FIG. 8A is a perspective view illustrating a coupling relationship between the interlocking gear and the rotation limiting gear of the door hinge structure according to the embodiment of the present invention. FIG.
8B is a perspective view showing a state in which the interlock gear is rotated and the rotation restricting gear is retracted in the state of FIG. 8A.
FIG. 8C is a perspective view showing a state in which the interlocking gear is retracted by the repulsive force of the elastic member which has been compressed while the interlocking gear is further rotated in the state of FIG. 8B. FIG.
FIG. 9A is a view illustrating an installation state of a door frame and a door provided with the door hinge structure according to an embodiment of the present invention.
FIG. 9B is a view showing a state in which the door is opened in the state of FIG. 9A. FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view of a door hinge structure according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of FIG.

As shown in the drawings, a door hinge structure 1 according to an embodiment of the present invention includes a pair of first and second fixing units 10 and 20, a pair of first and second fixing units And a hinge unit 30 provided between the first and second hinge arms 10 and 20.

The first fixing unit 10 includes a body portion 11 and an insertion groove 12 extending over the entire length of the body portion 11 and is coupled to one door in the insertion groove 12 And at least one fastening hole 13 is formed.

In addition, the first fixing unit 10 has a structure in which coupling pipes 14 and 15 having a circular shape are formed on one side surface of the first fixing unit 10.

A plurality of coupling protrusions 14a are formed at intervals along the inner circumferential surface of the coupling pipe 14 and a coupling hole 14b is formed in the outer circumferential surfaces of the coupling pipe 14 to couple the coupling pins 39, Is formed.

Like the first fixing unit 10, the second fixing unit 20 has a body portion 21 and an insertion groove 22 formed over the entire length of the body portion 21, And at least one fastening hole 23 is formed in the inside of the door 22 so as to be coupled to the other door.

In addition, covers 16 and 24 may be detachably coupled to the upper portions of the first and second fixing units 10 and 20, respectively.

Therefore, since the covers 16 and 24 are detachably coupled, the fastening members (bolts or the like) coupled to the respective body portions 11 and 21 of the first and second fixing units 10 and 20 I can not see it, and it can give a nice impression.

The hinge unit 30 includes an interlocking gear 31 which is engaged with and interlocked with the inside of the coupling pipe 14 of the first fixed unit 10 and a rotation restricting gear A shaft 33 provided between the coupling pipes 13 and 14 of the first fixing unit 10 through the rotation limiting gear 32 and a shaft 33 provided on one side of the rotation limiting gear 32, And an elastic member 34 that is resiliently resilient.

A plurality of engagement grooves 31a are formed on the outer circumferential surface of the interlocking gear 31 so as to be spaced apart in the circumferential direction so that the engagement protrusions 14a formed on the inner peripheral surface of one coupling pipe 14 of the first fixing unit 10 ) To be engaged.

Of course, a plurality of engaging projections are formed on the outer circumferential surface of the interlocking gear 31 at intervals along the circumferential direction, and engagement grooves formed on the inner circumferential surface of one coupling pipe 14 of the first fixing unit 10 are formed So that they can be engaged with each other at the time of engagement.

In addition, as shown in FIG. 3, the interlocking gear 31 has a structure in which a plurality of locking projections 31b are protruded from one surface of the interlocking gear 31 with an interval therebetween. A coupling hole 31c is formed at the center of the interlocking gear 31 so that the shaft 33 is inserted into the interlocking gear 31. The upper surface of the interlocking gear 31 is engaged with a coupling pin 39 (31d) are formed.

The locking projection 31b has a structure in which both side surfaces are inclined.

4, a plurality of teeth 32a are formed on the outer circumferential surface of the rotation restricting gear 32 at intervals along the circumferential direction, and a plurality of teeth 32a are formed on one surface, that is, a position facing the interlocking gear 31 A plurality of limiting protrusions 32b may be formed at intervals.

Both side surfaces of the restricting projection 32b also have an inclined structure similar to the engaging projection 31b of the interlocking gear 31. [

In addition, an insertion hole 32c through which the shaft 33 is inserted can be formed at a central position of the rotation limiting gear 32.

In the embodiment of the present invention, the limiting protrusions 32b protruding from the rotation restricting gear 32 may be formed at positions facing each other, that is, at intervals of 180 degrees.

A coupling hole 33a may be formed at one side of the shaft 33 to allow a coupling pin 39, which will be described later, to be coupled therewith.

A gear washer 35 is provided on one side of the interlocking gear 31 and one or more washers 36 may be provided on one end of the elastic member 34.

A bushing 37 is provided at one end of the elastic member 34 while the shaft 33 penetrates and an insertion tube 38 is inserted between the coupling tubes 14 and 15 of the first fixing unit 10 ) May be provided.

As shown in FIG. 2, a flange surface 37a protruding in a radial direction may be formed on one side of the bushing 37.

A guide groove 38a is formed in the inner circumferential surface of the insertion tube 38 at intervals along the circumferential direction and the guide groove 38a may be formed along the longitudinal direction of the insertion tube 38, So that the toothed portion 32a of the rotation restricting gear 32 provided inside the pipe 38 is engaged.

The coupling pipe 13 of the first fixing unit 10 and the interlocking gear 31 provided in the first fixing unit 10 and the shaft 33 inserted into the interlocking gear 31 are provided with engaging pins (39) can be coupled and interlocked.

The rotation restricting gear 32 is slidably coupled along the longitudinal direction of the shaft 33 and is inserted into the insertion tube 38 to be guided along the longitudinal direction of the insertion tube 38. [ Is guided along the guide shaft 38a, and is not slid in the circumferential direction.

7, the interlocking gear 31, the gear washer 35, the rotation restricting gear 32, the shaft 33, the bushing 37, the resilient A member 34 is inserted and a washer 36 is inserted between the insertion tube 38 and the coupling tube 15. [

The insertion tube 38 is integrally fixed to one side of the body 21 constituting the second fixing unit 20. The insertion tube 38 is shorter than the lateral side of the body 21, And can be inserted and disposed between the coupling pipes 14 and 15 of the unit 10.

The door hinge structure 1 according to an embodiment of the present invention having such a structure is configured such that the first and second fixing units 10 and 20 are mounted on the door 41 and the door frame 9, the door 41 is opened so that the first fixing unit 10 can be opened and closed as shown in Fig. 9 (b) And rotates simultaneously with the rotation of the door 41.

In other words, when the door 41 is closed, the door hinge structure 1 is horizontally disposed. When the door 41 is opened, one of the first fixing units 10 of the door hinge structure 1 is hinge- The door 30 is brought into contact with the second fixed unit 20 provided on the opposite side while being simultaneously rotated through the unit 30 so that the door 41 is opened.

The interlocking gear 31 coupled to the inside of the coupling pipe 14 of the first fixing unit 10 rotates at the same time when the door 41 is opened. And a coupling pipe 14 and 15 are formed on one side of the hinge unit 30. The coupling pipe 14 is coupled to the interlocking gear 31, As the coupling pipe 14 integrally formed with the coupling pipe 14 rotates, the interlocking gear 31 inside the coupling pipe 14 rotates at the same time.

8A, the rotation restricting gear 32 engaged with the interlocking gear 31 is retracted along the longitudinal direction of the shaft 33, as shown in FIG. 8B.

In other words, when the interlocking gear 31 rotates, a locking projection 31b protruding from one side of the interlocking gear 31 is interposed between the restricting projections 32b of the rotation restricting gear 32, And moves to the protruded end of the limiting protrusion 32b while rotating and pushes the rotation restricting gear 32.

The rotation restricting gear 32 is guided along the guide groove 38a of the insertion tube 38 and slid inside the insertion tube 38. At this time, The elastic member 34 is compressed.

7 is an engaging sectional view of the door hinge structure 1 according to the embodiment of the present invention. The elastic member 34, which is compressed as the rotation limiting gear 32 is retracted, And can be compressed as the rotation restricting gear 32 is retracted.

Then, when the engaging projection 31b of the interlocking gear 31 passes over the restricting projection 32b of the rotation restricting gear 32, the compressed elastic member 34 is positioned between the restricting projections 32b, The restricting gear 32 advances and returns to its original position, thereby opening the door.

Here, as shown in FIG. 6, the protrusion 32b of the rotation restricting gear 32 is formed with two projections protruding from each other in the direction of 180 degrees. In the embodiment of the present invention, 32b is 50 degrees and therefore the angle alpha of the half portion which is 1/2 of this forming angle beta can be set to 25 degrees.

As shown in FIG. 5, four interlocking projections 31b are provided in the interlocking gear 31. Two interlocking projections 31b are disposed at the upper and lower portions of the drawing, And the angle? Between the centers of the two locking projections 31b can be set to 60 degrees.

 8A, the state in which the interlocking gear 31 and the rotation restricting gear 32 are engaged is a state in which the rotation restricting gear 32 is interposed between a pair of engagement projections 31b provided above and below the interlocking gear 31, A pair of limiting protrusions 32b protruding from one surface of the gear 32 are inserted and engaged with each other.

9A and 9B, as the door 41 is rotated to open the door 41, the interlocking gear 31 is rotated to push the rotation restricting gear 32, The peak portion of the locking projection 31b of the interlocking gear 31 and the mountain portion of the limiting projection 32b of the rotation restricting gear 32 are engaged with each other as shown in Fig. The rotation restricting gear 32 is retracted while compressing the elastic member 34 so that the repulsive force help of the compressed elastic member 34 as the interlocking gear 31 is continuously rotated as shown in Fig. The locking projection 31b of the interlocking gear 31 smoothly moves on the inclined surface of the limiting projection 32b of the rotation restricting gear 32. [

In other words, when the door 41 is in the closed state at 180 degrees (i.e., in a horizontal state), the opening of the door 41 starts and the interlocking gear 31 rotates as shown in Fig. The opening operation is automatically started by the repulsive force and the self weight of the elastic member 34 which has been compressed since the moment of passing the angle of 25 degrees at 155 degrees and is opened to 0 degree so that the engagement protrusion 31b of the interlocking gear 31 Is brought into close contact with the opposite limiting projection 32b of the rotation restricting gear 32 and is stopped.

The opening and closing angles of the door 41 by the door hinge structure 1 are set such that when the door 41 is closed at 180 degrees (see Fig. 9A) and the door 41 is at 0 degrees, When the door hinge structure 1 according to the embodiment of the present invention is installed, the door 41 is opened within a range of 180 degrees.

On the contrary, when the door 41 that was opened is to be closed again, when the locking projection 31b of the interlocking gear 31 exceeds the angle of 25 degrees as in the case of the opening, the self weight and the elasticity of the compressed elastic member 34 (32b) of the rotation limiting gear (32) by the repulsive force,

Also, according to an embodiment of the present invention, as shown in FIG. 1, the corners of the first and second fixing units 10 and 20 may be subjected to a rounding process to give a beautiful and beautiful impression.

In the embodiment of the present invention, the door hinge structure 1 can be applied to a door of a portable mini-refrigerator (a refrigerator for storing and selling beverages) instead of a general refrigerator, but is not limited thereto. It is applicable to doors.

In addition, according to the embodiment of the present invention, each component of the door hinge structure 1 is made of a material which is not corroded, that is, a component is made of stainless steel, a component is made of ABS or the like, Corrosion due to moisture can be prevented.

A special grease lubricant or the like can be applied to prevent smooth rotation and moisture penetration.

Therefore, the door hinge structure 1 according to the embodiment of the present invention does not cause corrosion at all and does not hinder the rotation of the door 41 at all.

In addition, according to the embodiment of the present invention, the door hinge structure 1 is waterproofed to prevent water from penetrating into the interior of the door hinge structure 1, thereby preventing internal corrosion.

In other words, as shown in FIG. 1 or FIG. 7, the interlocking gear 31 forming the hinge unit 30 is coupled with the coupling pipe 14, and then the gear washer 35 is closely attached thereto And a plurality of washers 36 are closely attached between the coupling pipe 15 located at the rear side and the insertion tube 38 so that rainwater can not penetrate, for example.

Of course, water can penetrate if it is completely immersed in water, but it can be waterproof if it flows down like rainwater.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, But fall within the scope of the appended claims.

1: door hinge structure
10: first fixed unit
11: Body part
12: Insert groove
13: fastening hole
14, 15:
14a:
14b: coupling ball
16: cover
20: second fixed unit
21:
22: insertion groove
23: fastening ball
24: cover
30: Hinge unit
31: Interlocking gear
31a:
31b:
31c; Insert ball
31d: coupling ball
32: Restricted rotation gear
32a:
32b:
32c: insert hole
32d: insertion tube
33: Shaft
33a: coupling ball
34: elastic member
35: Gear washers
36: Washer
37: Bushing
37a: flange surface
38: insertion tube
38a: guide groove
39:
40: Door frame
41: Door

Claims (8)

A first fixing unit 10 having a body part 11 and a pair of coupling tubes 14 and 15 formed on one side of the body part 11 at intervals;
A second fixing unit (20) arranged to face the first fixing unit (10);
A first fixing unit 10 is rotatably disposed between the pair of first and second fixing units 10 and 20 and is coupled to the inside of the coupling pipe 14 of the first fixing unit 10 A coupling restricting gear 32 engaged with the interlocking gear 31 and a coupling pipe 13 of the first fixing unit 10 penetrating the rotation restricting gear 32, An elastic member 34 resiliently urged from one surface of the rotation restricting gear 32 and a coupling pipe 14 of the first fixing unit 10 The rotation restricting gear 32, the shaft 33 and the elastic member 34 are inserted into the body portion 21 of the second fixed unit 20 while being inserted between the interlocking gear 31, A hinge unit (30) having an insertion tube (38) provided so as to be arranged;
Wherein the door hinge structure comprises a door hinge structure.
The method according to claim 1,
Wherein one end of the one coupling pipe (14), the interlocking gear (31), and the shaft (33) are fixedly coupled with the coupling pin (39) so as to be interlocked with each other.
The method according to claim 1,
And a cover (16) (24) is detachably coupled to an upper portion of the first and second fixing units (10, 20).
The method according to claim 1,
A plurality of engaging projections 14a are formed in the inside of the one coupling pipe 14 at intervals along the inner circumferential surface. A plurality of engaging grooves 31a are formed on the outer peripheral surface of the interlocking gear 31, Is formed to engage with an engaging projection (14a) formed on an inner circumferential surface of one coupling pipe (14) of the first fixing unit (10).
The method according to claim 1 or 4,
A plurality of locking protrusions 31b protrude from one surface of the interlocking gear 31 so as to be spaced apart from each other. A plurality of teeth 32a are formed on the outer circumferential surface of the rotation restricting gear 32 at intervals along the circumferential direction And a plurality of restricting protrusions (32b) are formed on one side of the rotation restricting gear (32) so as to be spaced apart from the engaging protrusions (31b) of the interlocking gear (31).
The method of claim 5,
Wherein the restriction protrusions (32b) protruding from the rotation restricting gear (32) are formed one by one at 180 ° intervals, which are opposite to each other.
The method according to claim 1,
A guide groove 38a is formed in the inner circumferential surface of the insertion tube 38 along the circumferential direction at an interval in the circumferential direction and the tooth 32a of the rotation restricting gear 32 is inserted into the guide groove 38a, So as to be engaged with the door hinge structure.
The method according to claim 1,
The rotation restricting gear 32 is slidably coupled along the longitudinal direction of the shaft 33 and is inserted into the insertion tube 38 to be inserted into the guide groove 38a And is not slid in the circumferential direction while being slid while being guided along the door hinge structure.

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