KR20130053549A

KR20130053549A - Side frame for refrigerator door and method for manufacturing the same

Info

Publication number: KR20130053549A
Application number: KR1020110118611A
Authority: KR
Inventors: 박종연; 유일상; 박기철
Original assignee: 주식회사 포스코
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2013-05-24

Abstract

PURPOSE: A side frame for a refrigerator door and a manufacturing method for the same are provided to lower a production cost and to simplify a production process in comparison with an extrusion process. CONSTITUTION: A side frame for a refrigerator door comprises a frame unit(10), a first joint unit(30), a second joint unit(50), and a coupling unit(70). The first joint unit is equipped at one side of the frame unit for joining a door front side member(110). The second joint unit is equipped at the other side of the frame unit for joining a door rear side member(130). The coupling unit is equipped at upper and lower sides of the frame unit for assembling a door cover member(150).

Description

Side frame for refrigerator door and method for manufacturing the same

The present invention relates to a side frame of a refrigerator door and a method of manufacturing the same, and more particularly, to a side frame of a refrigerator door and a method of manufacturing the same so that the production process can be simplified and the cost can be reduced, and the low temperature deformation is reduced. It is about.

The conventional side door frame for a refrigerator door is usually provided through an extrusion process (molding) using an aluminum material, and is then painted after molding. At this time, the cross section should be constant throughout the longitudinal direction as a feature of the extrusion process.

However, such a conventional extrusion method requires additional processing on the part where the cross section is changed for fastening with other parts, which not only increases production time and manufacturing cost of the product, but also has a low degree of freedom in structural design. And the like.

In particular, since the side frame of the conventional refrigerator door uses an aluminum material for the extrusion process, the raw material is also expensive compared to the steel material.

In addition, as described in detail in the following FIG. 7, in the case of the side frame of the conventional refrigerator door, which is manufactured through extrusion processing of aluminum material, since the low temperature deformation due to the internal temperature drop of the refrigerator is larger than that of the steel material, The problem is that the frame is severely deformed with respect to the front surface.

This causes the door gap as much as it is deformed, and the cold air inside the refrigerator leaks to the outside, which causes other problems such as difficulty in maintaining the temperature and increasing the electric cost when using the refrigerator.

Accordingly, in the case of the conventional aluminum material, it is necessary to form or add a reinforcement frame during or after manufacturing the side frame of the door to prevent deformation of the side frame.

Therefore, in the art, there is a need for a side frame of a refrigerator door and a method of manufacturing the same, in which a production process is simplified compared to extrusion processing and cost can be reduced.

As an embodiment for realizing the above technical problem, the present invention, the frame portion;

A first joining part provided on the one side of the frame part to be joined to the door front member;

A second joining part provided on the other side of the frame part to join the door rear member; And

At least one fastening part provided on the upper and lower sides of the frame part to assemble a door cover member;

Is configured to include, the frame portion including the joints and the fastening portion provides a side frame of the refrigerator door integrally configured through the press working of the steel material.

Preferably, the first joining part is provided integrally on one side of the frame part through press working of a steel material, and includes first and second joining surfaces to which the door front member is joined.

More preferably, the second joining part is provided integrally on the other side of the frame part through a press working of a steel material, and includes a joining step part to which the door rear member is joined.

More preferably, the fastening part is provided integrally on the upper side and the lower side of the frame part through the press working of the steel material, it is provided as a bolt fastening portion is assembled with the bolt penetrating the cover member.

At this time, the bolt fastening portion of the fastening portion, the bolt passes through the nut or cylindrical fastening portion or a screw fastening plate is formed to include a bolt fastening plate.

Preferably, the frame portion further includes one or more cut-out parts assembly parts in which the connecting parts are assembled or opened.

Next, as another embodiment of the technical aspect, the present invention, the first processing step of pressing the first joining portion 30, the door front member is bonded to one side of the frame portion of the steel material;

A second machining step of pressing the second joint part to which the door rear member is joined to the other side of the frame part; And

A third machining step of press-processing the fastening part in which the cover members are assembled to the upper and lower sides of the frame part;

It provides a side frame manufacturing method of the door configured to include.

In this case, the first to the third processing step is press working at the same time, or is to be sequentially pressed in the selected order.

Preferably, the first processing step of the first joint portion is a step of bending the one end of the steel material to form a first and second joining surface to which the door front member is bonded; And

Zero thickness machining the first and second joining surfaces upward;

Side frame manufacturing method of the refrigerator door, characterized in that comprising a.

More preferably, the second providing step of the second joining portion, the step of processing the other end of the steel material to form a joining step for joining the door back member; And, the step of bending the junction step upward; may be configured to include.

More preferably, the third processing step of the fastening part may include forming a stretched material by partially blanking the upper and lower ends of the steel material, and forming the fastening part by processing the stretched material; And bending the fastening unit upwardly.

More preferably, blanking the steel material before processing the first and second joints and the fastening part in accordance with the size of the side frame, wherein forming at least one component assembly cut or opened in the frame portion; It is.

In addition, the solution of the said subject does not enumerate all the features of this invention. BRIEF DESCRIPTION OF THE DRAWINGS The various features and advantages and effects of the present invention can be understood in more detail with reference to the following specific embodiments

According to the present invention, in the production of the side frame of the refrigerator door, instead of the existing aluminum extrusion method, by implementing the press working of the steel material, it is possible to simplify the production process and increase the degree of freedom in the design of the structure.

In addition, the deformation of the side frame due to the low temperature during the processing of the refrigerator (warp) is minimized more compared to the aluminum material to prevent problems such as internal air leakage of the refrigerator to improve the operation efficiency of the refrigerator and reduce the maintenance cost.

1 is a perspective view showing a side frame of a refrigerator door according to the present invention
Figure 2 is a perspective view of the main portion of the present invention the side frame of Figure 1
Figure 3 is a structural diagram showing an assembly structure through the fastening portion of the side frame of the present invention
4 to 6 is a schematic view and a perspective view showing the processing steps of the first and second joints and the fastening portion of the side frame of the refrigerator door of the present invention;
7 and 8 is a simulation result photograph showing the low temperature deformation of the conventional aluminum material and the steel material of the present invention

Hereinafter, the present invention will be described in detail with reference to the drawings. However, in the following description of the present embodiment, the side frame of the refrigerator door according to the present invention is denoted by the reference numeral of 10 units, the refrigerator door is denoted by the reference numeral of 100 units, the processing steps of the components in the description of the manufacturing method, respectively It will be described by dividing into steps S1 to S4.

First, FIGS. 1 to 3 illustrate a side frame 1 of a refrigerator door according to the present invention and a refrigerator door 100 including the same.

First, in this embodiment of the side frame 1 (hereinafter referred to as 'door side frame') of the refrigerator door of the present invention, the material that is processed into the frame portion 10 of the door side frame 1 of the present invention, namely , And the reference numerals of the steel materials to be pressed are divided into 10 '.

Of course, such a steel material (10 ') is basically provided to be cut and processed to a suitable thickness and size in advance in accordance with the specifications of the product to be finally manufactured of the door side frame (1).

Next, the refrigerator door side frame 1 of the present invention will be described.

That is, as shown in Figures 1 to 2, the door side frame 1 according to the present invention, and the frame portion 10 which is a main portion that largely determines the size (width and height) of the frame 1 as a whole; The first bonding part 30 is provided on one side of the frame part 10 and the front member of the refrigerator door 100 is joined, and the second bonding part is provided on the other side of the frame part 10 and the door rear member is joined. And a joint part 50 and one or more fastening parts 70 provided on the upper and lower sides of the frame part and to which the door cover member is assembled, wherein the joint parts and the fastening part are formed in the frame part by pressing a steel material. It is provided integrally.

Therefore, the door side frame 1 of the present invention is the front and rear members 110 and 130 through the first and second joining portions 30 and 50 and the fastening portion 70 described in detail below. It is to enable the bonding and assembling of the cover member 150.

In particular, unlike conventional aluminum material produced by the door side frame through the extrusion process (dice processing), using a steel material (10 ') of a lower cost than aluminum material, but also press processing (for example) , Mold punching).

As a result, the door side frame 1 of the present invention is provided as a frame in which the door front member 110 and the rear member 130 and the upper and lower cover members 150 of the refrigerator door 100 are assembled, but at a low cost. It is provided by steel press working.

At this time, the door front member 110, although schematically shown in Figure 1, in recent years according to the design of the refrigerator material, for example, glass panels, panels, door parts for drinking water (water) providing various functions, It may be a member including other display devices.

And, such a door front member 110 may be provided separated up and down on the basis of the component assembly unit 12 for assembling the parts to be described in detail in the following, the number of installation is optionally in accordance with the refrigerator standard or design Of course, it may vary.

On the other hand, the door rear member 130 may be a one-piece panel to provide a space in which the insulation material is filled between the door front member (which is determined according to the width of the body portion of the side frame), but in this case can be changed, of course. .

Next, the frame part 10, the first joining part 30, and the second joining part 50, which are provided in the door side frame 1 of the present invention and enable the joining and fastening of the front, rear, and cover members of the door, are provided. And it looks at with respect to the fastening portion (70).

First, as shown in Figures 1 to 2, the frame portion 10 of the door side frame 1 of the present invention is a flat portion in the center is a portion that determines the width and height of the actual side frame.

Such a frame portion 10 is provided by the press working of the steel material 10 ', as shown in Figures 3 to 6 below, the steel material is the height of the first and second joints and the fastening portion after pressing In view of the above, it is a plate material provided in accordance with the specifications of the door in advance.

On the other hand, as shown in Figures 1 to 2, the first joint portion 30 of the door side frame 1 of the present invention, of the frame portion 10 provided through the press working of the steel material (10 '). It is provided integrally on one side, for example, the door front member 110, such as the glass panel described above is to include a first or second bonding surface 32, 34 which is integrally or a plurality of separate bonding.

That is, the first and second joining surfaces 32 and 34 make it possible to firmly bond and assemble a corner surface and a portion of the edge of the door front member.

At this time, as shown in Figure 2, the end portion of the second bonding surface 34 may be further provided with a bent end portion 36 in the longitudinal direction, so as to counter the bending deformation.

Such machining of the first and second joining surfaces 32 and 34 will be described later in FIG. 4.

Next, as shown in Figures 1 to 2, the second joint portion 50 of the door side frame 1 of the present invention, the frame portion 10 provided through the press working of the steel material 10 ' It is provided on the other side integrally, for example, the door rear member 130 described above, that is, includes a junction step 52 to which the panel is bonded.

Accordingly, the joint step 52 is attached to the second joint part of the step 52 while the edge surface of the panel, which is the door rear member, is held in close contact with the second joint of the step 52 to secure the joint structure and to easily join. do.

At this time, as shown in Figure 2, the end of the second junction 50 provided with the junction step portion is further provided with a bent end 54 integrally in the longitudinal direction to further suppress the bending deformation of the portion. have.

Such processing of the second joint portion 50 will be described again in FIG. 5 next.

Next, as shown in Figures 1 to 3, the fastening portion 70 of the door side frame 1 of the present invention is provided on the upper and lower sides of the frame portion through the press working of the flat steel material (10 '). Again, the bolt B penetrating the cover member 150 described above may be provided as a bolt fastening portion to be assembled.

In this embodiment, the fastening portion 70 may be changed in position or number of installations according to the assembly design. In this embodiment, as shown in FIG. Each pair may be provided.

At this time, the upper and lower cover members 150 and 160 are provided with holes 152 and 162 through which the fastening bolt B passes, as shown in FIG. 3, and the upper cover member 150 is provided at the upper end of the side frame. The stepped portion 154 may be provided to correspond to the formation of the worn portion.

Meanwhile, as shown in FIGS. 2 and 3, the bolt fastening portion 70 of the present invention has a cylindrical or polygonal fastening portion 72 through which the fastening bolt B passes and the nut N is fastened via a washer W or the like. ) May be included.

The cylindrical or polygonal fastening portion 72 may be provided with a height in the frame portion 10 by actually connecting the straight portion 74 and the frame connecting portion 76 by press working.

Alternatively, as shown in FIG. 2, the fastening part 70 may have other shapes. As shown in the partially enlarged view of FIG. 2, a bolt including a threaded part 82 and a frame connection part 84 connected to the frame part 10 is included. It may be provided in the form of the fastening plate (80).

In this case, the fastening bolt may be provided by fastening the bolt to the threaded portion 82 of the bolt fastening plate without a nut.

Next, as shown in FIG. 1, the frame part 10 of the door side frame 1 of the present invention further includes one or more parts assembly parts 12 and 14 which are cut or opened in which connection parts are assembled. can do.

That is, as shown in FIG. 1, the front member is separated and joined to the center of the side frame 1, and the first component assembly part 12 cut to the center side may be provided, for example. In the drawings, a door handle (part) not shown may be provided.

Alternatively, as shown in FIG. 1, the second component assembly 14 may be further provided on the upper side of one of the two side frames 1 in which other components, for example, a switch and the like, are assembled.

Of course, these parts assembly is a design or functional position of the refrigerator or the number of installation is of course changed, but according to the position of these parts assembly may be further separated or integrally provided with the door front member.

Therefore, the refrigerator door of the present invention, as shown in Figure 1, the side frame 1 of the refrigerator door of the present invention described so far, at least one door front member 110 provided on one side between the side frame, One or more door rear members 130 provided on the other side between the side frames and upper and lower cover members 150 assembled to the fastening part 70 provided on the side frames may be provided.

Next, FIG. 7 and FIG. 8 show the analysis of the low temperature deformation of the side frame 1 of the door refrigerator according to the present invention and the side frame 1 'extruded from the existing aluminum material. 8A and 8B illustrate a case in which the thicknesses of the door frame of the present invention are 0.8 mm and 1.0 mm, respectively.

At this time, as can be seen in Figures 7 and 8, in the case of the door side frame 1 made of the pressed steel material of the present invention rather than the deformation of the conventional door side frame (1 ') provided by the aluminum material by extrusion processing It can be seen that the low temperature deformation amount is 1/2 or less as compared with the conventional art.

For example, as shown in FIG. 7, the conventional door side frame 1 ′ provided through extrusion of a conventional aluminum material at −20 ° C. is deformed about 3.9 mm based on the front of the refrigerator.

Therefore, in this case, the cold air inside the refrigerator is likely to leak to the outside due to the deformation of the door side frame 1 '.

However, as can be seen in Figure 8, in the case of the door side frame 1 of the present invention, since the steel material is provided by pressing, the deformation of about 1.8mm at about 1.8mm, thickness of about 1.9mm when the thickness of 1.0mm in Figure 8a Only that will happen.

Therefore, in the case of the present invention, when the refrigerator is used, there is a possibility that cold air in the refrigerator leaks due to excessive deformation of the door side frame to the outside.

Next, FIGS. 4 to 6 illustrate the manufacturing steps of the door side frame 1 of the present invention by separating the first and second joint parts and the fastening parts, respectively.

Meanwhile, in the present embodiment, FIGS. 4 to 6 show processing steps of the first and second joint parts 30 and 50 and the fastening part 70 of the present invention, respectively, as S 1 to S 3.

Therefore, the door side frame manufacturing method of the present invention, in summary, the first processing step of pressing the first joining portion 30 to which the door front member is joined to one side of the frame portion 10 of the steel material (10 ') ( S2) and a second processing step (S2) of pressing the second bonding portion 50 to which the door rear member is joined to the other side of the frame portion, and the fastening portion 70 to which the cover member is assembled on the upper and lower sides of the frame portion. It may be configured to include a third machining step (S3) of the press working.

At this time, the first to the third processing step (S1-S3) of the present invention, in fact, it is possible to simultaneously proceed with the first or the third processing step, or optionally to sequentially process according to the mold conditions.

However, preferably, as shown in FIG. 6, after the processing of the first to second processing steps S1-2 of the first bonding portion 30 and the second bonding portion 50 is completed, the third processing of the fastening portion 70 is completed. It is preferable to proceed to step S3.

Hereinafter, the manufacturing method will be described by dividing the first to third processing steps (S1-S3).

First, as shown in Figure 4, in accordance with the refrigerator design standards or design, the steel material 10 'to be punched out having a suitable strength and specifications is prepared first, such as the first joint processing step of the present invention In the first processing step S1, the one end of the steel material 10 ′ is bent downward to form first and second joining surfaces 32 and 34 to which the door front member 110 is joined. The zero-thickness machining is performed by bending the first and second joining surfaces upward.

That is, considering the length of the end of the frame portion 10 is integrally bent to provide a second joining surface 34, and then to provide a second joining surface 32 upwards as shown in FIG. 3. The zero thickness molding is made by bending.

On the other hand, such a zero thickness bending may be for confirming that the bending part is expanded due to the expansion of the insulating foam during the door manufacturing in the present embodiment, for example, deformation of less than 0.2 mm occurs at 50kgf / cm3 Can be.

Next, as shown in Figure 4, the second processing step (S2) of the second joint portion processing step of the door side frame 1 of the present invention, by processing the other end of the steel material 10 'door rear member ( The junction step portion 52 to which the 130 is joined is formed, and then the junction step portion is bent upward.

In this case, the joint step 52 may be provided during the primary processing, and at the same time, the bending step 54 may be further formed. ) Is completed.

Next, as shown in FIG. 6, when the processing of the first and second joints 30 and 50 as described above is completed, the cover members 150 and 160 may be assembled in the door side frame 1 of the present invention. To perform the third machining step (S3) for processing the fastening portion 70 to make. First, the upper and lower ends of the steel material 10 'are blanked to form a partially cut elongated material 70', and then the elongated material 70 'is processed to fasten the above-described part 70 described in detail. ) And finally, the fastening portion may be upwardly bent to provide a processing step of providing close contact with the inside of the frame portion.

At this time, as shown in Figure 6, a portion of the stretched material 70 'is broken (' C portion ') and the connecting portion (' T portion) integrated with the frame portion 10 is bent to connect the frame portion of the fastening portion Is to implement

On the other hand, as shown in Figure 3, since the fastening portion 70, such as the cover member 150, 160, which is substantially thin plate is assembled, it is not a portion to which a load that is not fastened is not applied, As shown in FIG. 6, the frame part 10 and the part T are provided as a part to be integrally connected, and the bolt fastening of the fastening part 70 has no problem in maintaining its strength even when bent during processing.

Of course, the adjustment of the length (T portion) of the frame portion connecting portion 76 of the fastening portion 70 at the time of processing is not a problem at all, for example, when the load is applied, the length thereof is increased to be integral with the frame portion. You can increase the length of the section.

At this time, the parts assembly 12 (14) described above and the elongated material 70 'portion for processing the fastening portion is actually the first and second processing step (S1) of the first and second joints as shown in FIG. (S2) before the first step is preferably made in the processing step of the raw material (10 ').

Accordingly, in the case of the side frame 1 of the refrigerator door of the present invention and the refrigerator door 100 including the same, since the steel material is provided by press working unlike the conventional one, the low temperature deformation is low and the cost is low, and only the mold is used. When manufactured, it enables a large amount of high-speed production.

1 .... side frame of the refrigerator door 30 .... first junction
32,34 .... 1st, 2nd splice 50 .... 2nd splice
52 .... Connection step 70 .... Connection
100 .... Refrigerator Door 110 .... Door Front
130 .... Door rear member 150 .... Cover member

Claims

Frame unit 10;
A first joining part 30 provided at one side of the frame part to join the door front member;
On the other side of the frame portion 10, the second bonding portion 50 provided to join the door rear member; And
At least one fastening part 70 provided at an upper side and a lower side of the frame part to assemble a door cover member;
Is configured to include, the frame portion including the joints and the fastening portion side frame of the refrigerator door provided integrally through the press working of the steel material.

The method of claim 1,
The first joint part 30 is provided integrally on one side of the frame part through a press working of a steel material, and includes first and second joint surfaces 32 and 34 to which the door front member 110 is joined. The side frame of the refrigerator door, characterized in that.

The method of claim 1,
The second joint part 50 is provided integrally on the other side of the frame part through a press working of a steel material, the refrigerator door, characterized in that it comprises a joint step portion 52 to which the door rear member 130 is bonded. Side frame.

4. The method according to any one of claims 1 to 3,
The fastening part 70 is provided integrally on the upper side and the lower side of the frame part through a press working of a steel material, the side frame of the refrigerator door, characterized in that provided as a bolt fastening part for assembling the bolt penetrating the cover member .

5. The method of claim 4,
The bolt fastening part of the fastening part 70 includes a cylindrical or polygonal fastening part 72 or a bolt fastening plate 80 formed with a threaded part 82 through which the bolt passes and is assembled with a nut. Side frame.

The method of claim 1,
The frame part 10 includes one or more parts assembly parts 12 and 14 which are cut or opened to which the connection parts are assembled;
Side frame of the refrigerator door further comprising a.

A first machining step S1 of pressing the first joint part 30 to which the door front member is joined to one side of the frame part 10 made of steel;
A second machining step (S2) of pressing the second joint part 50 to which the door rear member is joined to the other side of the frame part; And
A third machining step (S3) of press-processing the fastening part 70 in which the cover members are assembled to the upper and lower sides of the frame part;
Method for producing a side frame of the refrigerator door comprising a.

The method of claim 7, wherein
The first to the third processing step is a pressing process at the same time, or the side frame manufacturing method of the refrigerator door, characterized in that the pressing process in sequence in the selected order.

9. The method according to claim 7 or 8,
The first processing step S1 of the first joining part may be bent downward at one end of the steel material 10 ′ to form first and second joining surfaces 32 and 34 to which the door front member 110 is joined. Processing step; And
Zero thickness machining the first and second joining surfaces upward;
Side frame manufacturing method of the refrigerator door, characterized in that comprising a.

9. The method according to claim 7 or 8,
The second providing step (S2) of the second joining part may include forming a joining step part 52 to which the door rear member 130 is joined by processing the other end of the steel material 10 ′; And
Bending the junction step upward;
Side frame manufacturing method of the refrigerator door, characterized in that comprising a.

9. The method according to claim 7 or 8,
The third machining step S3 of the fastening part may include: blanking the upper and lower ends of the steel material 10 'to form a partially elongated material 70';
Processing the stretched material to form a fastening part 70; And
Bending the fastening portion upward;
Side frame manufacturing method of the refrigerator door, characterized in that comprising a.

9. The method according to claim 7 or 8,
The steel material 10 'before the first and second joint parts and the fastening part is blanked in accordance with the size of the side frame, and at this time, one or more parts assembly parts 12 and 14 cut or opened in the frame part 10. Forming a step (S4);
Side frame manufacturing method of the refrigerator door further comprising a.