KR200350034Y1 - Revolution axis for refrigerator door - Google Patents

Abstract

The present invention relates to a rotating shaft for a refrigerator door installed in the lower portion of the refrigerator, at least two uplifts which are installed in the lower portion of the refrigerator body (1) and are spaced apart by the valleys (V) and have a pitch (P) of equal intervals. (52), the lower hinge plate 50 formed on the upper surface while taking a cylindrical shape as a whole; Correspondingly formed on the upward ridge 52 of the lower hinge plate 50, has a downward ridge 62 having a valley (V) mating with the upward ridge 52 on the lower surface, the lower portion of the door (D) The upper hinge plate 60 is installed to rotate the downward ridge 62, which is circumferentially and vertically moved in the mating state with respect to the upward ridge 52 during the opening and closing of the door (D); Since the open state of the door D can be maintained by the mating and engaging action of the downward ridges 52 and 62, it is possible to provide a rotating shaft that can carry out food storage for a long time while the door D is opened. , There is an effect to improve the convenience of use of the refrigerator.

Description

Rotary shaft for refrigerator door {REVOLUTION AXIS FOR REFRIGERATOR DOOR}

The present invention relates to a rotating shaft for a refrigerator door, and is provided at the bottom of the main body and the door of the refrigerator, and relates to a rotating shaft for pivotally supporting the door to be opened and closed from the bottom.

In general, as shown in Figure 1, the upper and lower ends of the door (D) installed in the refrigerator main body 1, the spring hinge 10 and the rotating shaft 30 are respectively installed, the spring hinge 10 is a hinge shaft A coil spring exerting a torsion elastic force is inserted into the door to close the open door with torsion elastic force.

The rotating shaft 30 pivots the lower part of the door to be opened and closed, and supports the door to rotate about the rotating shaft.

Such a rotating shaft 30 is shown in the accompanying FIG. 2, which is attached to the US Patent No. 3,510,986 filed before the present invention (name: door with an automatic closing hinge and a hinge thereof: SELF- It is an exploded perspective view of the rotating shaft 30 described in CLOSING HINGED DOOR AND HINGES THEREFOR.

As shown in the drawing, the conventional rotating shaft 30 is installed at the lower portion of the refrigerator body 1, and the upper surface has a bending plate 32 having an upwardly protruding hinge shaft 32a and a lower surface of the door D. It is installed, it is composed of a horizontal plate 34 having a sleeve 34a into which the hinge shaft 32a of the bending plate 32 is inserted.

At this time, the bending plate 32 and the horizontal plate 34 is coupled to the refrigerator main body 1 and the door (D) by a screw not shown.

Accordingly, the door D is opened and closed about the shaft 34a of the horizontal plate 34 that is rotated about the hinge shaft 32a of the bending plate 32.

However, since the conventional rotating shaft 30 is a structure that cannot resist the torsional elasticity of the spring hinge 10 described above, the closing operation of the opened door D cannot be prevented.

Therefore, the refrigerator user has a problem that can not be stored while reciprocating a plurality of food in the state in which the door (D) is open.

That is, since the door D is automatically closed by the hinge spring 10 during reciprocation, there is a problem in that one food is stored and then another food is not stored.

If this is to be solved, a support for suppressing the torsion elasticity of the hinge spring 10 should be installed below the door D while the door D is opened.

Then, the door D can be kept open by the supporting action by the support, so that the user can continuously receive food while reciprocating.

However, in order to maintain the open state of the door (D) in this way, there is an inconvenient problem of having to install a support in the door (D) at all times.

The present invention is devised to solve the conventional problems as described above, when the door of the refrigerator is opened to maintain the door open state against the torsion elastic force of the hinge spring to close the door, the external force to the open door When this is applied, the object is to provide a rotating shaft for a refrigerator door that automatically closes the door in compliance with the external force.

1 is a perspective view showing a refrigerator having a rotating shaft for a conventional refrigerator door;

FIG. 2 is an exploded perspective view showing the rotating shaft shown in FIG. 1;

3 is an exploded perspective view showing a rotating shaft for a refrigerator door according to the present invention;

4 is a plan view showing the ridge shown in FIG.

5 is a side view showing the ridge shown in FIG.

Figure 6 is a plan view showing a state of use of the rotary shaft for a refrigerator door according to the present invention.

<Explanation of symbols for the main parts of the drawings>

1: refrigerator body 50: lower hinge plate

52: uplift 60: upper hinge plate

62: downhill 52a, 62a: slow slope

52b, 62b: horizontal portion 52c, 62c: steep slope

D: Door

The rotating shaft for the refrigerator door according to the present invention for achieving the above object is installed in the lower portion of the refrigerator main body and the refrigerator, the rotating shaft of the refrigerator supporting the lower portion so that the door to be opened and closed is rotated, installed in the lower portion of the refrigerator body At least two upwardly ridges having equal pitches spaced apart by the valleys, the lower hinge plate being formed on the upper surface while taking a cylindrical shape as a whole; Correspondingly formed in the upward ridge of the lower hinge plate, has a downward ridge on the lower surface formed with the valleys mating with the upward ridge, is installed in the lower part of the door, circumferentially and vertically in the mating state with respect to the upward ridge when the door is opened or closed. It characterized in that it comprises a ;; an upper hinge plate for rotating in the direction of the downward ridge to move in the axis.

Therefore, when the door is opened and closed, the downward ridge which circumferentially and vertically moves in the mating state with respect to the upward ridge can not only maintain the open state of the door but also close it.

Hereinafter, the rotary shaft for a refrigerator door according to the present invention with reference to the accompanying drawings as follows, and in the description will be described with the same reference numerals as for the conventional components.

3 is an exploded perspective view showing a rotating shaft for a refrigerator door according to the present invention, Figure 4 is a plan view showing the ridge shown in Figure 3, Figure 5 is a side view showing the ridge shown in FIG.

As shown, the rotating shaft for the refrigerator door according to the present invention is installed in the lower portion of the refrigerator main body 1, and is spaced apart by the valleys V formed as intermittent in the uneven shape, pitches of equal intervals ( At least two uplifters 52 having P) include: a lower hinge plate 50 made of a plastic material formed on an upper surface thereof as a whole having a cylindrical shape; Correspondingly formed to be engaged with the uplift 52 of the lower hinge plate 50, has a down ridge 62 formed on the lower surface to form a valley (V) mating with the up ridge 52, the door (D) of the refrigerator It is installed in the lower portion, the upper hinge plate 60 of a plastic material to rotate the down protuberance 62 when the door (D) opening and closing the axis; includes.

Therefore, when the door D is opened and closed, the down protruder 62 of the upper hinge plate 60 which is integrally rotated with the door D as installed in the door D is an upward protruder of the lower hinge plate 50. In (52), circumferential and vertical movements (ascending and descending) are made in an intact state.

That is, the downward ridge 62 is rotated while riding the upward ridge 52 in an interlocking state by the rotational force of the door D, and thus the downward ridge 62 moves in the circumferential direction and vertically in the vertical direction.

At this time, the upper and lower hinge plates (50, 60) to form the screw holes (56, 66) as shown, the screw holes (56, 66) through the fastening screws or rivets not shown through the refrigerator body (1) and the upper and lower hinge plates 50 and 60 are fixed on the door D. FIG.

As shown in FIGS. 4 and 5, the upper and lower ridges 52 and 62 of the upper and lower hinge plates 50 and 60 have a width W in accordance with the outer diameter formed to be two to four times larger. And the height H is determined to be equal to or smaller than the size of the width W, and the downward ridge 62 moving in the circumferential and vertical directions when the door D is opened or closed is defined as the width W. It is preferable to configure so as to prevent the departure from the uplift 52 by the height and (H).

That is, the up and down ridges 52 and 62 should have a width W larger than the height H.

Then, since the upper and lower ridges 52 and 62 have a width W equal to or greater than the height H, a large area can be interlocked with each other, thereby securing more mutual support. .

Therefore, the up and down ridges 52 and 62 can be prevented from disappearing while being worn as the large ridges interact with each other even when the down ridge 52 rotates (circumference and vertical movement) by the opening and closing of the door D. In addition, they are not separated from each other by the secured bearing force.

Of course, since the width (W) and height (H) of the up-and-down ridges 52 and 62 are sufficiently considered the number of opening and closing times that the door (D) is opened and closed until discarding the refrigerator, until the refrigerator is discarded Downward ridges 52 and 62 are not extinguished.

However, the inner and outer diameters of the upper and lower ridges 52 and 62 are formed to be 8 mm to 16 mm and 16 mm to 32 mm, respectively, and the height H is formed to be 4 mm to 5 mm, so that the size of the width W is high ( When the ratio is set to be 1 to 3 times higher than that of H), separation and dissipation of the up / down ridges 52 and 62 can be further prevented.

Herein, in more detail, for example, the inner and outer diameters of the up and down ridges 52 and 62 are determined to be 8 mm and 16 mm, respectively, to have a double difference from each other, and the height H is determined to be 4 mm. The width W is 4 mm equal to the height H.

On the other hand, when the inner and outer diameters of the up-down ridges 52 and 62 are determined to be 8 mm and 32 mm, respectively, to have four times the difference from each other, and the height H is determined to be 4 mm, the width W is the height ( 12 times larger than H).

As such, when the width W is 1 to 3 times higher than the height H, the width W is formed at least equal to or greater than the height H, so that the downward ridge 62 Not only can it be more effectively prevented from deviating, but also the circumference and vertical mobility of the downturn 62 can be more secured, so that extinction due to friction can be further prevented.

At this time, the through hole 54, as shown in Figs. 3 and 4, in the upper and lower hinge plates 60 and 20 in which the width W and the height H of the upper and lower ridges 52 and 62 are determined. When the 64 is formed, the material cost of the upper and lower hinge plates 60 and 20 can be reduced, and the through holes 54 and 64 are located at the center of the upper and lower ridges 52 and 62 as shown. It is preferable to form the same size as the inner diameter of the up-down ridge 52, 62.

On the other hand, the pitch (P) of the up and down ridges 52, 62 according to the present invention is determined by the separation angle θ of the acute angle radiated about the center on the plane of the up and down ridges 52, 62 The separation angle θ is applied to 120 ° such that the up / down ridges 52 and 62 are formed in three, for example, as shown in FIGS. 3 and 4, respectively. Are constructed to interact with each other in three directions.

Therefore, the up-down ridges 52 and 62 are interlocked with each other in three directions, so that they are stably supported.

Here, the upper and lower ridges 52 and 62 have radial angles α, β, and γ of 30 °, 40 °, and 10 °, respectively, at the center of the inner diameter of the plane as shown in FIGS. 4 and 5. From the opening direction (OP) of the door (D) toward the closing direction (CL), relative to the emitted virtual line, gentle slopes (52a, 62a), horizontal (52b, 62b), steep slope (52c) By continuously forming 62c, the gentle slopes 52a and 62a, the horizontal portions 52b and 62b, and the steep slopes 52c and 62c conform to and resist the circumferential and vertical movements of the downturn 62. It is preferable to configure it.

Then, the gentle inclined portions 52a and 62a and the sharp inclined portions 52c and 62c of the up and down ridges 52 and 62 alternate with each other as in FIG. 5, and the horizontal portions 52b and 62b are the up and down ridges ( 52 and 62 are inserted into the valleys V formed therebetween, whereby the up and down ridges 52 and 62 engage with each other.

At this time, the radial angle δ of the bone V takes the same 40 ° as the horizontal portion, as shown in FIG. 4, to allow insertion of the horizontal portions 52b and 62b.

Thus, the downward ridge 62 having the gentle slopes 52a and 62a, the horizontal portions 52b and 62b and the steep slopes 52c and 62c conforms to the circumferential and vertical movements of the downward ridge 62. Thus, the sloping direction 52a, 62a smoothly moves circumferentially and vertically in compliance with the opening force applied when the door D is opened, so that the door D is easily opened.

Of course, the opened door D is gradually opened by 120 ° by the pitch P having a 120 ° separation angle θ of the up / down ridges 52 and 62.

At this time, the door (D) is to be automatically closed by the torsion elastic force applied from the spring hinge of the upper end.

However, the opened door D is opened without being closed by the steep inclined portions 52c and 62c of the up and down ridges 52 and 62, which resists the circumferential and vertical movements of the downward ridge 62. Maintain state.

It is apparent that the resistance by the steep slope 52c should be able to overcome the torsional elasticity exerted by the spring hinge of the door D, which is in accordance with the above-described radial angle γ of the steep slope 52c. Determined by the inclination of the steep slopes 52c, 62c as shown in FIG.

That is, the steep inclined portions 52c and 62c of the upper and lower ridges 52 and 62, which are interlocked with each other, resist against the downward ridge 62 to move circumferentially and vertically while supporting each other by the inclination of each other. As a result, the downward ridge 62 overcomes the circumferential direction and the torsional elastic force.

Therefore, even if the torsional elastic force is applied from the spring hinge, the door D is not closed due to the resistance of the steep slopes 52c and 62c formed on the upper and lower ridges 52 and 62, and is opened. Keep it.

However, when the user gently touches the open door D in the closing direction CL, the door D is closed while overcoming the resistance of the steep slopes 52c and 62c.

The reason why the door D can overcome the resistance is that the closing force generated by combining the torsion elastic force of the spring hinge and the external force of the user is greater than that of the steep slopes 52c and 62c.

That is, since the closing force overcomes the resistive force, the downward ridge 62 rotates in the closing direction CL while returning to the original position (pre-opening position of the door) while moving in the circumferential and vertical directions with respect to the upward ridge 52. As a result, the door D is closed.

Of course, of the downturn 62, which rotates in the closing direction CL, operates opposite to when the door D is opened.

In other words, the steep slope 62c, the horizontal portion 62b, and the gentle slope portion 62a of the downwardly ridge 62 are the steep slope 52c, the horizontal portion 52b, the gentle slope portion of the upward ridge 52. Rotate while riding 52a sequentially.

On the other hand, in the beginning and end portions of the gentle inclined portions 52a and 62a, the horizontal portions 52b and 62b, and the steep inclined portions 52c and 62c formed in the up and down ridges 52 and 62, shown in FIG. It is to form a round (R) having a gentle curve as described above, so that the round (R) is configured to reduce the frictional resistance of the up and down ridges 52, 62 generated when opening and closing the door (D) desirable.

If the round R is not formed, the gentle slopes 52a and 62a, the horizontal portions 52b and 62b, and the steep slopes 52c and 62c have corners at portions facing each other. Due to the up and down ridge 52, 62 receives a large frictional resistance when opening and closing the door (D) is significantly worn.

In addition, when such a corner is formed, the downward ridge 62 which rotates according to the opening and closing of the door D has a gentle slope portions 52a and 62a, horizontal portions 52b and 62b, and steep slope portions 52c and 62c. Since the edges are caught, the rotation cannot be performed smoothly.

Therefore, when the round R is formed, the round R decreases the frictional resistance of the up / down ridges 52 and 62, so that the up and down ridges 52 and 62 are prevented from being worn by friction. Not only that, but also the downturn 62 can be rotated smoothly.

Looking at the operation of the rotating shaft according to the present invention configured as described above with reference to Figure 6, Figure 6 is a plan view showing a state of use of the rotating shaft for a refrigerator door according to the present invention, the upper hinge plate 62 as shown When the door D is opened and closed, the upper and lower ridges 52 and 62 rotate about the axis.

Here, the upper hinge plate 62 of the steep slopes 52a and 62a each time the separation angle θ of 120 ° as shown, due to the pitch (P) of the up and down ridges 52, 62 It is stopped by the resistance once, thereby opening and closing the door D by 120 °.

Of course, when opening the door D, the door D is kept open by 120 degrees by the steep inclination parts 52c and 62c of the up-down ridge 52,62.

Therefore, the user can continue to store the food in the refrigerator after opening the door (D), and when the storage is completed can be closed by touching the door (D) slightly.

At this time, the door (D) closes the refrigerator main body (1) while being rotated by the closing force of the torsion elastic force of the spring hinge and the external force of the user, whereby the cold air of the refrigerator main body 1 is intermittent.

Thus, when the door D is closed, the gentle inclination parts 52a and 62a, the horizontal parts 52b and 62b, and the steep inclination parts 52c and 62c of the up-and-down ridges 52 and 62 are occluded mutually. And thereby the door D is tightly closed.

Here, the reason why the door D is firmly closed is that the door D is gently inclined portions 52a and 62a, horizontal portions 52b and 62b and steep slopes 52c of the up and down ridges 52 and 62. , 62c) prevents less closure.

That is, the up and down ridges 52 and 62 serve to control the door D by the occlusal operation, and thus the door D is closed by the occlusion of the up and down ridges 52 and 62.

In other words, in the conventional refrigerator having no up / down ridges 52 and 62, when the torsion elasticity of the spring hinge is lowered, the door D may be less closed.

However, according to the present invention, when the closing force is applied, the up / down ridges 52 and 62 are engaged with each other by the closing force, so that the door D is closed.

In particular, since the horizontal portions 52b and 62b of the up and down ridges 52 and 62 are inserted into the valleys V by the inclinations of the gentle slope portions 52a and 62a and the steep slope portions 52c and 62c, the door (D) is closed.

On the other hand, when the door D is opened and closed, the up and down ridges 52 and 62 maintain the mutually engaged state by the weight of the door D.

That is, since the own weight of the door D presses the downward ridge 62, the downward ridge 62 is engaged with and engaged with the upward ridge 52.

Therefore, even if the rotating shaft according to the present invention does not have a hinge shaft as in the related art, the door D is not detached from the refrigerator main body 1.

In the above description and the drawings, the up / down ridges 52 and 62 have a cylindrical shape as a whole. However, the up / down ridges 52 and 62 may be formed in a hemispherical shape.

Of course, when forming a hemispherical shape, the width (diameter) and the height should be applied to the above-described width (W) and height (H).

The above-described embodiments are merely illustrative of preferred embodiments of the present invention, and the scope of application of the present invention is not limited thereto, and may be appropriately changed within the scope of the same idea.

Therefore, each component and shape, structure, etc. shown in the embodiments of the present invention can be modified and carried out, and such modifications are naturally belonging to the utility model registration claims of the present invention attached.

The rotating shaft for the refrigerator door according to the present invention as described above is able to maintain the open state of the door by the resistive force of the up and down ridges which are intermittently interlocked and interlocked by the concave-convex type, so that the food storage work in the open state of the door There is an effect of improving convenience, which can be performed for a long time.

In addition, when the door is closed, the up and down ridges are interlocked to control the door, so that the door is less closed, thereby preventing cold air from leaking out.

In addition, it is possible to omit the hinge shaft as in the conventional shaft, there is also an effect that can ultimately reduce the manufacturing cost of the refrigerator.

Claims (6)

In the rotary shaft of the refrigerator installed in the refrigerator body 1 and the lower portion of the door (D), and pivoting the lower portion such that the door (D) to be opened and closed is rotated, The lower portion formed on the upper surface of the refrigerator main body 1 is provided with at least two uplifts 52 which are spaced apart by the valleys V and have a pitch P at an equal interval. Hinge plate 50; Correspondingly formed on the upward ridge 52 of the lower hinge plate 50, has a downward ridge 62 having a valley (V) mating with the upward ridge 52 on the lower surface, the lower portion of the door (D) And an upper hinge plate 60 which rotates about an axial and vertical movement of the downward ridge 62 in an angular state with respect to the upward ridge 52 when the door D is opened and closed. Rotating shaft for a refrigerator door characterized in that. The method of claim 1, The upper and lower ridges 52 and 62 determine the width W according to the outer diameter formed 2 to 4 times larger than the inner diameter, and the height H equal to or smaller than the size of the width W. To determine that the down ridge 62 moving in the circumferential and vertical directions when opening and closing the door (D) is configured to prevent the departure from the up ridge 52 by the width (W) and height (H) Rotating shaft for a refrigerator door characterized in that. The method of claim 2, The inner and outer diameters of the upper and lower ridges 52 and 62 are respectively 8 mm to 16 mm and 16 mm to 32 mm, and the height H is formed to be 4 mm to 5 mm so that the size of the width W is high. A rotating shaft for a refrigerator door, which is configured to take a ratio of 1 to 3 times as compared with (H). The method of claim 1, The pitch P of the up-down ridges 52 and 62 is determined by the separation angle θ of an acute angle radiated about the center on the plane of the up-down ridges 52 and 62; The separation angle (θ) is applied to 120 ° so that the up and down ridges 52, 62 are formed in three, characterized in that the up and down ridges 52, 62 are configured to interact with each other in three directions Rotary shaft for refrigerator door. The method according to any one of claims 1 to 4, The upper and lower ridges 52 and 62 have radiation angles α, β, and γ of 30 °, 40 °, and 10 °, respectively, at the center of the inner diameter of the plane, and based on the emitted virtual line, the door D The gentle inclined portions 52a and 62a, the horizontal portions 52b and 62b and the steep inclined portions 52c and 62c are continuously formed from the opening direction OP to the closing direction CL. 52a, 62a), horizontal parts (52b, 62b), steep slopes (52c, 62c) is a rotating shaft for a refrigerator door, characterized in that configured to comply with and resist the circumferential and vertical movement of the downturn (62). The method of claim 5, wherein Rounds having a gentle curve at the beginning and the end of the gentle inclined portions 52a and 62a, the horizontal portions 52b and 62b, and the sharply inclined portions 52c and 62c formed in the up and down ridges 52 and 62. And (R), respectively, wherein the round (R) is configured to reduce the frictional resistance of the up / down ridges (52, 62) generated when the door (D) is opened and closed.