KR101024082B1 - sliding apparatus - Google Patents

Abstract

The present invention relates to a sliding device, a drawer, a moving rail which is located on both sides of the drawer, has a space therein, is disposed below the moving rail, has a fixed space therein, and the drawer is installed Fixed rails fixed to each other, respectively installed at opposite corners of the space and the fixed space facing each other in a diagonal direction, and a rolling body in contact with the movable rail and the fixed rail for rolling motion, and the space; Located in the interior of the fixed space, and includes a sliding body for sliding the drawer in contact with the cloud body, the drawer, by connecting the center of the cloud body installed at both corners of the space facing each other in the direction of the drawer The rolling body installed at both edges of the extended extension line and the fixed space An extension line extending in the drawer direction by connecting the center of the contact angle is made of 80 to 100 degrees, the sliding body of the cutting surface is a closed curve forming a closed curve is integrally full.

Sliding device, drawer, rolling body, sliding body, closed curve

Description

Sliding apparatus

The present invention relates to a sliding device.

In general, the sliding device is provided between the sliding object and the sliding fixed object for storing or easily withdrawing the article. The sliding device is installed to be slid so that the sliding object is easily withdrawn and drawn from the sliding fixed object. The goods are stored and a drawer, a box without a lid, is typically used among sliding objects. Drawers are used in connection with sliding devices fixed to sliding objects such as furniture, refrigerators, ovens, and cases of electronics.

As described above, the sliding fixed object to which the sliding device is fixed has been applied in various ways, and includes all conventional objects to which the sliding device can be fixed. In addition, the sliding object is an object that is drawn out and drawn into the sliding fixed object. That is, it includes all the ordinary objects that can be slid to the sliding device.

In the present specification, the sliding object is defined as a drawer, and the sliding fixed object is defined as furniture for convenience of description.

The general sliding device located between the drawer and the furniture is divided into two-stage nesting and three-stage nesting. Among them, a three-stage nesting type with a long pull out is mainly used.

1 is a cross-sectional view showing a conventional sliding device disclosed in US Patent No. 6,132,020. As shown in FIG. 1, the conventional sliding device 10 includes a movable member 13, a fixed member 17, and an intermediate member 14 positioned between the movable member 13 and the fixed member 17. Include.

In the conventional sliding device 10, the fixing member 17 is fixed to the desk plate 16 by the extension 12, the moving member 13 is fixed to the bottom of the drawer plate 11, the intermediate member At both ends of 14, three rows of raceways are formed.

Here, a plurality of balls 15 are positioned between the movable member 13 and the intermediate member 14, the intermediate member 14, and the fixing member 17, so that the intermediate member 14 is fixed by rolling along the track. Along the 17, the moving member 13 slides along the intermediate member 14 so that the slide 10 is operated in three stages as a whole.

The prior art sliding device 10 of US Pat. No. 6,132,020 is arranged in an up and down direction in which three rows of tracks face each other so as to withstand the load generated by the weight of the drawer and the main quantity of the interior of the drawer. The moving member 13 is fixed to the drawer plate 11. The fixing member 17 is fixed to the desk board 16. An intermediate member 14 is formed between the movable member 13 and the fixed member 17 in contact with the ball 15 provided therein. The intermediate member 14 is manufactured by integrally bending and molding one plate in order to have a structure which supports the load of the drawer plate 11. That is, the intermediate member 14 consists of one board | plate material, and is strong compared with the board | plate material which joined many members. In addition, since the intermediate member 14 is integrally formed without the coupling portion and the joint portion, a plurality of members are joined to minimize frictional force or sliding interference generated at the coupling portion and the joint portion, thereby increasing wear resistance. .

This intermediate member goes through a plating process to prevent corrosion. In the plating process, the plating liquid was deposited on the surface of the intermediate member that was integrally bent and washed with the cleaning liquid to prevent corrosion.

However, the sliding device of the prior art is complicated in shape by forming a track portion in which the three balls in rolling contact with the movable member and the three balls in rolling contact with the fixed member are formed by bending the intermediate member, and the bending parts are complicated. There was a problem that the processing cost is increased by going through a plurality of bending processes to process the.

In addition, the intermediate member formed integrally is bent a plurality of times in order to produce the shape of the portion in contact with each ball, so that the plating is more smoothly compared with the exposed portion of the bent portion and the portions in contact with each other during bending. As a result, there is a disadvantage in that staining occurs and visual defects occur, and even without staining, corrosion propagates rapidly in a portion where the plating solution is not deposited over time, and as a result, the life of the rail is reduced.

In particular, when a conventional sliding device is used in a place with high humidity, such as a refrigerator, moisture penetrates into an integrally bent intermediate member due to a capillary phenomenon, and in a portion where plating is not smooth due to the penetrated moisture. There is a disadvantage that corrosion occurs rapidly.

The upward and downward loads generated by the weight of the drawer and the weight of the inside of the drawer are formed by pairing each other by the number of squared powers of the ball to which the ball is installed, so that the load can be uniformly distributed. However, in the conventional sliding device, since the track rows on which the balls are installed are formed three by one each, the load cannot be uniformly distributed. Accordingly, the load generated from the up and down is concentrated to one side, there was a problem that the deformation and breakage occurs in the sliding device due to the concentrated load.

In addition, a torsional load caused by a force generated toward the drawer center direction is generated in the sliding device which fixes both sides when the drawer is sliding and withdrawing, and the torsional load is concentrated in the drawer direction center of the intermediate member. However, the conventional sliding device is biased in the fixing member in the drawer direction of the intermediate member, the ball is provided, the resistance to withstand the load generated on the moving member side is lowered. Accordingly, when a continuous load is generated toward the moving member with less resistance, deformation and breakage are generated, thereby reducing the service life.

In addition, the conventional sliding device is provided with six rows of tracks in which balls are provided up and down, and the moving member, the fixing member, and the intermediate member have a structure that slides in contact with the ball. Accordingly, the sliding device has to maintain the structure in which the six-row raceway in which the ball is installed is difficult to reduce the volume of the device.

The problem to be solved by the present invention is to stably support various loads acting on the sliding object, while miniaturizing the size with a simple structure, reducing the processing cost by simplifying the shape of the sliding member, the plating performance is improved and corrosion resistance An improved sliding device is provided.

A sliding device according to an embodiment of the present invention is a sliding device which is fixed to a sliding fixed object, and is connected to a sliding object and sliding so as to be located on both sides of the sliding object, the moving rail having a space therein Is disposed on the lower portion of the moving rail, has a fixed space therein, the fixed rail fixed to the sliding fixed object, respectively installed on both corners of the space and the opposite facing each other in the fixed space, And a rolling body in contact with the movable rail and the fixed rail for rolling motion, and a sliding body positioned inside the space and the fixed space, the sliding body sliding in sliding contact with the rolling body. Wool facing each other in the space Extension lines extending in the direction of the sliding object by connecting the centers of the rolling bodies installed in the repositioned position and extension lines extending in the direction of the sliding object by connecting the centers of the rolling bodies installed at both corner positions of the fixed space. The abutment angle is 80 to 100 degrees, and the sliding body has an outline of the cut surface forming a closed curve and is completely solid.

In addition, the moving rail is fixed to both sides of the sliding object, the rail body is open at the bottom of the space, and formed in both corners facing each other in the interior of the space, the cloud and the cloud It may include a track portion in contact.

The fixed rail is located at an overlapping lower portion of the movable rail, and includes a fixed rail body having an upper portion of the fixed space open, a protrusion of the fixed rail body toward the sliding fixed object, and the fixed rail body. Fixing members fixed to the object, and formed in both corners facing each other in the interior of the fixed space, and may include a fixed raceway in contact with the cloud body.

In addition, the sliding body is located in the interior of the moving rail, the moving sliding portion having a moving orbit groove in contact with the cloud body located at both corners facing each other, located in the interior of the fixed rail, facing each other A fixed sliding portion having a fixed raceway groove in contact with the rolling bodies located at both corners, and connecting the movable sliding portion and the fixed sliding portion, and an open lower portion of the moving rail and an open upper portion of the fixed rail. It may include a connecting portion connected through, the movable sliding portion, the fixed sliding portion, and the connecting portion of the cutting surface of the outline forming a closed curve, it can be equipped with a solid body.

In addition, the sliding device according to one embodiment of the present invention described above may be installed in a furniture.

In addition, the sliding device according to an embodiment of the present invention described above may be installed in a refrigerator.

And, the sliding device according to one embodiment of the present invention described above may be installed in an oven.

According to an embodiment of the present invention, the sliding device is installed on both sides of the sliding object to perform the sliding operation during the withdrawal and withdrawal has a stable structure that distributes the load in various directions generated in the sliding object while minimizing the number of parts By reducing the volume has the advantage that can be made compact.

In addition, the sliding body, which is mounted inside the sliding device and installed so as to move in a rolling motion, has a closed curve on its cut surface, and is integrally processed by using a solid material so that the inside is full and the strength is improved. As the surface hardness can be increased during processing, there is an advantage of improving wear resistance.

In addition, the sliding body is uniformly deposited on the entire surface during the plating process as the outline of the cut surface forms a closed curve, thereby improving the plating performance and consequently providing the effect of increasing the life of the sliding device.

In particular, the sliding body has the advantage that by using a material that is full so that there is no gap in the inside, even when used in a place such as a humid refrigerator, moisture does not penetrate into the inside to suppress corrosion generated inside.

In addition, the sliding device is a position and the shape of the sliding body in contact with the rolling body and the rolling contact with the rolling body symmetrically up and down with respect to the center of the sliding body, the sliding body is vertically symmetrical in the same shape, by being installed in a symmetrical position of the rolling body, It is easy to manufacture and assemble.

In addition, the track part of the rolling body rolling the rolling motion in the sliding device has a stable structure that effectively supports the load by distributing the upward, downward and torsional loads generated by the object sliding in the minimum number of tracks. Increasing the lifespan of the device, the reduction of parts due to the reduction in the volume of the device, there is an advantage to reduce the manufacturing cost.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Like parts are designated by like reference numerals throughout the specification.

Then, a sliding device for a drawer according to an embodiment of the present invention will be described with reference to FIGS. 2 to 4.

In this specification, the sliding object is defined as a drawer, and the sliding fixed object is defined as furniture for convenience of description.

That is, it is apparent that the drawer includes all the usual sliding objects, and the furniture may include all the usual sliding objects.

Figure 2 is a perspective view showing a state in which the sliding device is installed according to an embodiment of the present invention, Figure 3 is a sectional view taken along the line III-III of Figure 2, Figure 4 is a partial cutaway cross-sectional view showing the main part of the sliding device of FIG. to be.

2 to 4, the sliding device 100 according to an embodiment of the present invention includes a moving rail 110, a fixed rail 120, a rolling body 130, and a sliding body 140. .

The moving rail 110 includes a rail body 111 and track portions 113 disposed on both lower sides of the drawer 2. The rail body 111 is fixed to both lower sides of the drawer (2). The sliding space 112 is formed in the rail body 111. The rail body 111 has four corners, and a through hole 114 is formed in the lower portion of the sliding space 112.

The raceway 113 is formed inside the sliding space 112. The track portions 113 are located at both corners of the sliding space 112 facing each other. The track part 113 is located in the lower part of one side which is the center side of the drawer 2 of the sliding space 112, and the other upper part which is the furniture 1 side, respectively. In the track portion 113, the cloud body 130 is in contact with the cloud. The track portion 113 in contact with the cloud body 130 is formed in a round shape.

The fixed rail 120 includes a fixed rail body 121, a fixed member 123, and a fixed track 124 fixed to the furniture 1. The fixed rail body 121 is installed at a lower portion overlapping with the position where the drawer 2 of the furniture 1 is installed. The fixed rail body 121 is installed at a position overlapping the lower portion of the rail body 111. A fixed sliding space 122 is formed inside the fixed rail body 121. The fixed rail body 121 has three corners, and a through hole 125 is formed in the upper portion of the fixed sliding space 122.

The fixing member 123 protrudes from the other side in the direction of the furniture 1 of the fixing rail body 121. The fixing member 123 is located between the fixing rail body 121 and the furniture 1. The fixing member 123 is fixed to the furniture 1. The fixing member 123 fixes the fixing rail body 121 to the furniture 1.

The fixed track portion 124 is formed inside the fixed sliding space 122. The fixed raceway part 124 is located in the upper part of one side which is the center side of the drawer 2 of the fixed sliding space 122, and the other lower part which is the furniture 1 side, respectively. The fixed track portion 124 is in contact with the cloud 130. The fixed track portion 124 in contact with the cloud 130 is formed in a round shape.

The cloud body 130 is formed in a form capable of cloud movement, and is divided into a moving cloud body 131 and a fixed cloud body 132 according to the cloud position. The moving cloud body 131 is provided inside the moving rail 110. The moving cloud body 131 is in contact with the track portion 113 located in one lower portion and the other upper portion of the sliding space 112. The moving cloud body 131 is in rolling contact with the sliding body 140. Therefore, the moving rolling body 131 is installed so that the moving rail 110 slides on the upper side of the sliding body 140.

The fixed rolling body 132 is provided inside the fixed rail 120. The fixed rolling body 132 is in contact with the fixed orbit 124 is located in the upper and one lower portion of the fixed sliding space 112, respectively. The fixed rolling body 132 is in rolling contact with the sliding body 140. Therefore, the fixed rolling body 132 is installed so that the sliding body 140 slides on the upper portion of the fixed rail 120.

Although the cloud body 130 is disclosed in the form of a ball in the present specification, the cloud body 130 may include all of the general cloud means capable of cloud movement. That is, the rolling body 130 may be a ball, roller or the like to perform the rolling motion.

In addition, the moving cloud body 131 is disposed so as to be in contact with the track portion 113 formed in two rows on one lower side and the other upper portion of the sliding space (112). The fixed rolling body 132 is arranged to be in contact with the fixed orbit 124 formed in two rows on one upper portion and the other lower portion of the fixed sliding space 122. That is, the track part 113 and the fixed track part 124 on which the moving rolling member 131 and the fixed rolling member 132 are arranged are coupled to each other to support the moving rail 110 and the fixed rail 120. It is installed in a minimum quantity. The moving cloud body 131 and the fixed cloud body 132 installed in the track part 113 and the fixed track part 124 may be disposed in plural numbers according to the lengths of the moving rail 110 and the fixed rail 120. .

In addition, the moving rolling body 131 and the fixed rolling body 132 located on the other side in the direction of the furniture 1 are separated from each other to have a maximum distance in the rail body 111 and the fixed rail body 121. That is, the moving cloud body 131 is cloud contacted to the upper portion of the other side of the sliding space 112, and the fixed cloud body 132 is cloud contacted to the other lower portion of the fixed sliding space 122. The rolling body 130 withstands the load acting in the outward direction of the sliding device 100 as it is disposed on the movable rail 110 and the fixed rail 120 at the widest intervals on the other side in the direction of the furniture 1, respectively. Can improve the resistance. Therefore, the rolling body 130 has an advantage of increasing the service life by preventing the moving rail 110 and the fixed rail 120 from being deformed and damaged due to the load in the outward direction of the sliding device 100.

In addition, the rolling body 130, the moving rolling body 131 and the fixed rolling body 132 located on one side of the drawer 2 center direction has a minimum distance in the rail body 111 and the fixed rail body 121. Apart from each other to have. That is, the moving cloud body 131 is in contact with the cloud below the one side of the sliding space 112, the fixed cloud body 132 is in contact with the cloud of the upper side of the fixed sliding space 122. The rolling body 130 withstands the load concentrated inwardly of the sliding device 100 as it is disposed on the moving rail 110 and the fixed rail 120 at least at a narrow interval on one side in the center of the drawer 2. Resistance can be improved. Therefore, the rolling body 130 has an advantage of preventing the deformation and breakage of the moving rail 110 and the fixed rail 120 due to the load concentrated inward of the sliding device 100, thereby increasing the service life.

In addition, it extends in the drawer 2 direction such that the upper center line A connecting the center of the moving cloud body 131 and the lower center line B connecting the center of the fixed cloud body 132 abut. The cloud angle α at which the extended upper center line A and the lower center line B meet each other is 80 to 100 degrees. The optimal cloud angle α formed by the upper center line A and the lower center line B extending to one side to meet is 90 degrees.

If the cloud angle α is less than 80 degrees, the distance between the clouds 130 on the furniture 1 side is narrowed, and the resistance to withstand the load acting in the outward direction of the sliding device 100 is greatly reduced. Therefore, when the rolling angle α is less than 80 degrees, deformation and breakage of the sliding device 100 occur due to the load acting in the outward direction of the sliding device 100, thereby shortening the service life.

When the rolling angle α exceeds 100 degrees, the space between the rolling bodies 130 on the furniture 1 side becomes wider, and the resistance to withstand the load concentrated in the center of the drawer 2 center direction of the sliding device 100 falls. . Therefore, when the rolling angle α exceeds 100 degrees, deformation and breakage of the sliding device 100 occur due to the load concentrated in the center of the drawer 2 direction of the sliding device 100, thereby shortening the service life. There are disadvantages.

Accordingly, when the rolling angle α is maintained between 80 and 100 degrees, the sliding angle is installed in a stable structure that can withstand both the load in the outward direction and the load concentrated at the center of the drawer 2 side of the sliding device 100, thereby sliding Device 100 has the advantage that the life is extended by preventing deformation and breakage under load.

The sliding body 140 includes a movable sliding part 141, a fixed sliding part 143, and a connection part 145. The moving sliding part 141 is located inside the sliding space 112. The moving sliding part 141 has a shape that protrudes to the other side lower portion and one side upper portion of the sliding space 112 so as to make contact with the moving cloud body 131. The moving sliding part 141 has a round fork moving track groove 142 formed on the upper surface of the other side of the sliding space 112 and the lower surface of the lower portion of one side. In the moving track groove 142, the moving cloud body 131 located at both corners of the sliding space 112 facing each other is in contact with the cloud. That is, the moving track groove 142 of the moving cloud 131 is in contact with the cloud of the other upper portion and the other side of the sliding space 112 of the sliding space 112 in contact with the lower portion of the sliding space 112. It is formed in the position which is in contact with the cloud on one lower side.

The fixed sliding part 143 is located inside the fixed sliding space 122. The fixed sliding part 143 has a shape protruding to the other side upper portion and one side lower portion of the fixed sliding space 122 so as to be in contact with the fixed rolling body 132. In the fixed sliding part 143, a fixed raceway groove 144 is formed on the lower surface of the other side lower portion of the fixed sliding space 122 and the upper surface of the upper portion of the one side. The fixed rolling groove 144 is in contact with the fixed rolling body 132 located at both corners of the fixed sliding space 122 facing each other. That is, the fixed raceway groove 144 is the fixed rolling body 132 in contact with the other lower portion of the fixed rolling body 132 in contact with the upper surface of the fixed sliding space 122 and the other lower portion of the fixed sliding space 122. It is formed at the position of the cloud contact on the upper side of each one).

The connecting portion 145 connects the movable sliding portion 141 and the fixed sliding portion 143. The connection part 145 is inserted into the moving hole 114 and the fixing hole 125 and is connected through the sliding space 112 and the fixed sliding space 122, and between the moving rail 110 and the fixed rail 120. Is located. The movable sliding part 141 and the fixed sliding part 143 have a symmetrical shape up and down about the connection part 145.

Therefore, the sliding body 140 connects the moving rail 110 and the fixed rail 120. The sliding body 140 is in contact with the rolling body 130 installed inside the moving rail 110 and the fixed rail 120. That is, the moving rail 110 is in sliding contact with the sliding body 140 located below the sliding rail on the upper portion of the sliding body 140. In addition, the sliding body 140 is in contact with the fixed rail 120 located in the lower portion is sliding in the upper portion of the fixed rail (120). Sliding body 140 is the outer contour of the cut surface forms a closed curve, it is integrally formed using a full material.

In addition, the sliding body which is the main part of the sliding device according to an embodiment of the present invention will be described with reference to FIG. 5.

Referring to FIG. 5, in the sliding body 140, the outline of the cut surface forms a closed curve. That is, the whole surface of the sliding body 140 is exposed to the outside, and is integrally formed. When the plating process is performed on the surface of the sliding body 140 with the entire surface exposed, the plating solution is uniformly washed on the whole surface. Therefore, the outer surface of the sliding body 140 is plated evenly as a whole, thereby improving the plating performance.

In addition, the sliding body 140 is formed integrally using a material filled with a solid material. By using a solid material, it is possible to process with a mold such as rolling and drawing. If the processing is carried out through the rolling and drawing process, the processing cost can be reduced as the processing can be performed quickly in a simple process compared to the bending process. In other words, the bending process is to produce a shape by bending a plurality of times, each time the bending machine must be newly adjusted, the shape is also complicated. However, when the rolling and drawing processes are used, the rollers or the metal molds are formed by pressurizing the rollers or molds to form shapes in the solid material, thereby simplifying the process and reducing the production time. In addition, by using a material that is solidly integrated, the surface area of the cut surface is closed, and the surface area is significantly reduced as compared with the bending process, and the area to be plated is reduced during plating, thereby reducing the plating cost. In addition, the sliding body 140 may be more easily processed as it has a shape that is vertically symmetrical.

In addition, the sliding body 140 is integrally formed so that the outline of the cut surface forms a closed curve. Accordingly, it is formed by processing the outer shape of the material is full. Rolling and drawing processes can be used to process the contours. As described above, the sliding body 140 is applied to the surface when processing the outer shape of the solid material, thereby improving the surface hardness. In general, it is known that the wear resistance is increased when the surface hardness is improved. In other words, due to the pressurization process on the surface, the structure becomes dense, and as the rough surface becomes flat, the resistance due to the rolling contact decreases. Accordingly, the sliding body 140 having an outer shape is improved in wear resistance, thereby extending the life of the sliding device 100.

In addition, the sliding body 140 has a structure in which strength is improved as the inside is full and moisture and foreign matter cannot penetrate into the inside. Therefore, the resistance against load due to the improved strength is improved, and the occurrence of corrosion due to moisture penetration can be suppressed, thereby extending the life.

Then, the load generated when the drawer is drawn out to the sliding device according to an embodiment of the present invention will be described with reference to FIG. 6.

Referring to FIG. 6, a user draws out a drawer 2 installed in the furniture 1 in order to store an object in the drawer 2 or to take out the stored object to the outside. The withdrawal drawer 2 has a downward load F ′ acting downward due to the action of gravity by the weight of the drawer 2 and the weight of the contents of the drawer 2 at the end of the withdrawal direction. When the downward load F 'acts on the end of the drawer 2 in the drawn direction, the upward load F ″ acts on the opposite end of the drawer 2 in the upward direction. Thus, the loads F 'and F ″ are applied in different directions at the end of the draw direction 2 and the end of the opposite direction with respect to the drawer 2. The loads F ′ and F ″ applied to the drawer 2 are transmitted to the sliding device 100 through the moving rail 110, and the loads F ′ and F ″ transmitted to the sliding device 100 are furniture. It is transmitted to the fixed rail 120 fixed to (1).
As described above, in the process of transferring the loads F 'and F ″, the loads F' and F ″ in opposite directions are generated in the sliding device 100. The moving rail 110 fixed to the drawer 2 is formed with two rows of tracks on the track portion 113 in contact with the moving cloud body 131 in a direction facing each other. In addition, the fixed rails 120 fixed to the furniture 1 are formed in two rows of tracks on the fixed track portion 124 in contact with the fixed rolling body 132 in the direction facing each other.

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A sliding body 140 is formed between the moving rail 110 and the fixed rail 120, and the sliding body 140 has a moving track groove in which the moving rolling body 131 and the fixed rolling body 132 are in rolling contact with each other. The 142 and the fixed raceway groove 144 are formed in two rows, respectively.

The track of the track portion 113 in contact with the moving cloud 131 and the moving track groove 142 are formed in two rows at the top, and the fixed track portion 124 of the fixed cloud body 132 in contact with the cloud. The raceway and the fixed raceway groove 144 is formed in two rows at the bottom. Accordingly, the orbit of the track portion 113 in which the moving cloud body 131 located in the upper part is in contact with the cloud, and the moving track groove 142 and the fixed track part 124 in which the fixed rolling body 132 located in the lower part is in contact with the cloud. The raceway and the fixed raceway groove 144 is formed in two rows, respectively. Therefore, as the tracks in which the moving cloud body 131 and the fixed cloud body 132 are in contact with each other are arranged up and down by two rows, loads F ′ and F ″ acting in different directions may be uniformly distributed. Each of the two powers up and down is paired with two columns, the smallest quantity, among the possible powers of two.

Accordingly, the sliding device 100 to which the up and down loads F 'and F ″ acts has a track portion 113 and a moving track groove 142 provided with a pair of pairs of loads F' and F ″ and By being uniformly distributed in the fixed raceway 124 and the fixed raceway groove 144, deformation and breakage of the sliding device 100 due to concentration of loads F 'and F ″ can be prevented.

In addition, the torsional load generated when the drawer is drawn out in the sliding device for the drawer according to the exemplary embodiment of the present invention will be described with reference to FIG. 7.

7 is a cross-sectional view showing a torsional load generated in the sliding device for a drawer of FIG.

Referring to FIG. 7, when the drawer 2 is withdrawn, the downward load F ′ acting from the end to the downward direction in the withdrawal direction of the drawer 2 and the reaction force acts upward from the opposite end of the drawer 2 by its reaction force. The upward load F ″ is generated. The upward load F ″ causes a torsional load f to be directed toward the drawer center direction to the sliding device 100 provided on both lower sides of the drawer 2. Torsional load f acts as a force to twist toward the center of drawer 2 of sliding device 100. The torsional load f is concentrated on the sliding device 100 which is in rolling contact between the drawer 2 and the furniture 1. As the torsional load f acts on the drawer 2 side of the sliding device 100, the torsional load f is collected at the center of the drawer 2 direction of the sliding body 140 located at the center of the sliding device 100. That is, the load in the center of the drawer 2 direction of the sliding body 140 in rolling contact between the moving rail 110 fixed to the drawer 2 and the fixed rail 120 fixed to the furniture 1. This will be concentrated. The load f collected by the sliding body 140 is supported by the moving rolling body 131 and the fixed rolling body 132 which are installed in the drawer 2 direction. That is, the movable rolling body 131 and the fixed rolling body 132 is disposed at least at a narrow gap toward the center of the connecting body 131 on the drawer 2 side, the resistance to withstand the torsional load (f) To improve. Accordingly, the moving rolling body 131 and the fixed rolling body 132 provided on the drawer 2 side are disposed at a position capable of withstanding the torsional load f to prevent the torsional load f from being concentrated. Accordingly, it is possible to prevent deformation and breakage of the sliding device 100, which is generated due to the continuous concentration of the torsional load f, thereby increasing the service life.

Although the preferred embodiments of the present invention have been described in detail above, the scope of the present invention is not limited thereto, and various modifications and improvements of those skilled in the art using the basic concepts of the present invention defined in the following claims are also provided. It belongs to the scope of rights.

1 is a cross-sectional view showing a sliding device according to the prior art.

Figure 2 is a perspective view showing a state in which the sliding device is installed according to an embodiment of the present invention.

3 is a cross-sectional view taken along line III-III of FIG. 2;

4 is a partial cutaway sectional view showing a main part of the sliding device of FIG. 2;

FIG. 5 is a partially cutaway perspective view illustrating a sliding part that is a main part of the sliding device of FIG. 2; FIG.

6 is a side view showing a load generated in the sliding device of FIG.

7 is a cross-sectional view showing a torsional load generated in the sliding device of FIG.

* Description of the symbols for the main parts of the drawings *

1: furniture 2: drawers

100: sliding device 110: moving rail

111: rail body 112: sliding space

113: track portion 114: moving ball

120: fixed rail 121: fixed rail body

122: fixed sliding space 123: fixed member

124: fixed orbit portion 125: fixed hole

130: cloud body 131: moving cloud body

132: fixed rolling body 140: sliding body

141: moving sliding portion 142: moving track groove

143: fixed sliding portion 144: fixed track groove

145: connection

Claims (7)

In the sliding device is fixed to the sliding fixed object, connected to the sliding object and sliding so that, Located on both sides of the sliding object, the moving rail having a space therein, A fixed rail disposed under the moving rail and having a fixed space therein and fixed to the sliding fixed object; Clouds which are respectively installed at both corners of the space and the fixed space facing each other in the diagonal direction, the rolling body in contact with the moving rail and the fixed rail to perform a cloud movement, and Located in the interior of the space and the fixed space, the sliding body for sliding the sliding object in contact with the cloud Including; The sliding object connects the extension lines extending in the direction of the sliding object by connecting the centers of the rolling bodies installed at opposite corners of the space and the centers of the rolling bodies installed at both corner positions of the fixed space. The extension lines extending in the direction of contact with each other is made of 80 to 100 degrees, The sliding body has an outline of its cut surface forming a closed curve and integrally full. Sliding device. The method of claim 1, The moving rail A rail body fixed to both sides of the sliding object and having a lower portion of the space opened; It is formed at both corners facing each other in the diagonal direction in the interior of the space, the track portion in contact with the cloud and the cloud Sliding device comprising a. The method of claim 1, The fixed rail A fixed rail body positioned at an overlapping lower portion of the moving rail and having an upper portion of the fixed space opened; A fixing member protruding in the direction of the sliding fixed object of the fixed rail body, and fixing the fixed rail body to the object, and It is formed in both corners facing each other in the diagonal direction in the interior of the fixed space, the fixed track portion in contact with the cloud body and the cloud Sliding device comprising a. The method of claim 1, The sliding body is A movable sliding part which is located inside the moving rail and has a moving track groove in contact with the clouds located at both corners facing each other; A fixed sliding part which is located inside the fixed rail and has a fixed raceway groove in contact with the cloud body located at both corners facing each other, and A connecting portion connecting the movable sliding portion and the fixed sliding portion, and connected through an open lower portion of the movable rail and an open upper portion of the fixed rail. Including; The movable sliding portion, the fixed sliding portion, and the connecting portion form a closed curve on the outline of the cut surface, and are provided with a solid body. Sliding device. Furniture with a sliding device of claim 1. Refrigerator provided with a sliding device of claim 1. An oven provided with a sliding device of claim 1.

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