KR20040106025A - The door structure equipped with a multipurpose hinge - Google Patents

Abstract

PURPOSE: A door connecting structure provided with a multipurpose hinge is provided to improve the appearance of a refrigerator by installing a hinge to the inside of a door and to close a door at the regular speed using a hinge. CONSTITUTION: The door connecting structure opens and shuts a door(201) against a main body(202) by installing a hinge(200) between a main body(202) and a door(201). The hinge contains a housing forming the outward appearance, a cam shaft projected to the outside of the housing partially and rotated by external force, a piston lifting up and down along the housing with the rotation of the cam shaft, an elastic member compressed or repelled according to the vertical movement of the piston, and a hydraulic control bar controlling the flow of oil located on the upper and lower parts of the piston respectively. The housing is laid to a groove formed on one end of the door(201) and moved together according to the rotation of the door(201), the projected part of the cam shaft is connected to the inner circumference of a controller for an angle of repose, and the controller for an angle of repose is engaged with a fixture of a main body attached to the main body(202).

Description

The door structure equipped with a multipurpose hinge}

The present invention relates to a combined structure of the door, and in particular, the installation is buried so that the multi-purpose hinge device does not protrude to the outside in the refrigerator, etc., the door is easy to open and close the speed adjustment, and is configured to adjust the angle of the door is opened and stopped It relates to a door connection structure in which the hinge device is installed.

The hinge device is a device that connects two members so as to be mutually open or in contact with one axis as needed, and is used in doors and door frames for hinges, or is applied to refrigerators, mobile phones, laptops, and the like for opening and closing.

The hinge device installed in the refrigerator according to the prior art is described in Korean Utility Model Registration No. 271181 as shown in FIGS. 1 and 2.

1 is a perspective view of a refrigerator in a state where a hinge device according to the related art is installed, and FIG. 2 is a perspective view showing a part of the hinge device used in the door connection structure of the refrigerator shown in FIG. 1.

As illustrated in FIGS. 1 and 2, the hinge device 100 is installed on the main body 102 of the refrigerator so that the door 101 may be opened and closed. The hinge device 100 has a cam shaft 131 protruding to the outside of the housing 110 is engaged with the engaging portion 104 formed at one end of the door 101, thereby connecting the door 101 to the refrigerator body 102. Let's do it.

The hinge device 100 has a housing 110 in which components are installed therein. One end of the housing 110 is formed with a shaft hole communicating with the installation space, the other end is formed to be open to insert the components in the installation space.

In addition, the cam shaft 131 is inserted into the inner installation space in the housing 110, and the cam shaft 131 protrudes out of the housing 110 through the shaft hole. The camshaft 131 is cylindrical in shape and formed on one side of the outer surface of the flat process, and is engaged with the engaging portion 104 of the refrigerator body 101.

Then, the cam 130 is attached to the lower end of the cam shaft 131, the cam 130 is located in the inner installation space by hanging on one side end of the housing 110. The cam 130 has a guide portion cut out to allow the guide pin 140 to slide, and the guide block 160 is coupled to the guide pin 140.

Therefore, when the cam 130 rotates, the guide pin 140 slides along the guide portion of the cam 130, and the guide block 160 moves along the guide pin 140 in the longitudinal direction of the housing 110. Go straight.

In addition, the rear of the guide block 160, the spring 170 for providing an elastic force to the guide block 160, and the cover 190 is coupled to the other end of the housing 110 to seal the interior installation space sequentially do.

When the door 101 is opened by the user as described above, the cam 130 of the hinge device 100 engaged with the engaging portion 104 of the door 101 rotates and is coupled to the guide pin 140. Guide block 160 compresses spring 170.

When an external force is applied while the door 101 is opened, the guide pin 140 starts to move along the guide portion, and the guide block 160 linearly moves by the repulsive force of the spring 170. Then, the cam 130 is rotated in the direction in which the door 101 is closed by the guide pin 140, so that the door 101 linked to the cam 130 is automatically closed.

However, since the door 101 is closed by the repulsive force of the spring 170, the closing speed of the door 101 is not smoothly adjusted because the hinge device 100 is installed. In addition, since the closing speed is increased by gravity in the process of closing the door 101, the door 101 which opens and closes up and down has a problem in that a large shock is transmitted during the closing process of the door 101.

In addition, the door connecting structure for the refrigerator in which the hinge device 100 is installed may be stopped while the guide pin 140 of the hinge device 100 slides along the guide part, and thus the door 101 is opened. Can be paused at any angle. In addition, the user puts objects of various sizes into the refrigerator while the door 101 is opened. However, since the opening angle of the door 101 is fixed in the door connection structure of the prior art, the user feels somewhat uncomfortable when putting objects of various sizes.

The present invention is provided to solve the problems of the prior art as described above, is installed in the refrigerator so as not to protrude to the outside of the multipurpose hinge device, while the closing speed of the door is smoothly adjusted, the stopping angle of the door opening It is an object of the present invention to provide a door connection structure for a refrigerator having a versatile hinge device configured to be adjusted.

1 is a perspective view of a refrigerator in a state in which a hinge device according to the prior art is installed,

Figure 2 is a perspective view showing a part of the hinge device used for the door connection structure of the refrigerator shown in Figure 1,

3A and 3B are exploded perspective views and assembling perspective views of refrigerators respectively illustrating door connection structures in which a multipurpose hinge device is installed according to an embodiment of the present invention;

Figure 4a is an exploded perspective view of the multipurpose hinge device shown in Figure 3a,

4B is a cross-sectional view cut along the longitudinal direction of the assembled state of the multipurpose hinge device shown in Figure 4a,

FIG. 5 is an exploded perspective view illustrating a coupling relationship of the piston rod vertically moving inside the multipurpose hinge device illustrated in FIG. 4A;

Figure 6a is a perspective view showing a cam shaft for guiding the piston rod to move up and down in the multipurpose hinge device shown in Figure 5,

Figure 6b is a view showing the position of the guide pin according to the operation of the multipurpose hinge device in the elevating guide groove of the cam shaft shown in Figure 6a,

7A to 7E are cross-sectional views illustrating some internal operating states of the multipurpose hinge device shown in FIG. 6A, and

8A is an exploded perspective view of a refrigerator showing a door connection structure in which a multipurpose hinge device according to another embodiment of the present invention is installed;

FIG. 8B is an enlarged view of a part of the door connection structure shown in FIG. 8A.

♠ Explanation of symbols on the main parts of the drawing ♠

101, 201, 301: door 200: multipurpose hinge device

206: hinge pin 207: stop angle adjusting nut

Multipurpose hinge device of the present invention for achieving the object as described above is provided with a hinge device is installed between the main body and the door, so that the door can be opened and closed with respect to the main body by the axis of the hinge device. The hinge device includes a housing forming an exterior, a cam shaft protruding outwardly of the housing and rotating by an external force, and a piston descending in the longitudinal direction of the housing in association with the rotation of the cam shaft. It includes an elastic member for compressing or rebounding according to the lifting and lowering of the piston, and a hydraulic control rod for controlling the flow amount of oil respectively located on the upper and lower portions of the piston. The housing is embedded in a groove formed at one end of the door, and interlocks with the rotation of the door, and the cam shaft is connected to an inner circumference of the stop angle adjusting means, wherein a part of the cam shaft protrudes out of the housing. The adjusting means is coupled to the outer periphery by engaging the body fixture attached to the main body. Then, the stop angle adjusting means may be coupled to the main body fixture again by rotating the cam shaft at a predetermined angle.

In the following, with reference to the accompanying drawings a preferred embodiment of the door connection structure of a refrigerator equipped with a multipurpose hinge device according to the present invention will be described in detail.

3A and 3B are exploded perspective views and assembling perspective views of a refrigerator showing a door connection structure in which a versatile hinge device is installed according to an embodiment of the present invention, and FIG. 4A is an exploded perspective view of the versatile hinge device shown in FIG. 3A, 4B is a cross-sectional view cut along the longitudinal direction of the assembled state of the multipurpose hinge device shown in FIG.

As shown in Figures 3a to 4b, the door connection structure for a refrigerator according to the present invention is generally used in the refrigerator in which the door 201 is opened and closed up and down, the multipurpose hinge device 200 is installed in the door 201 It is inserted into and installed in the buried portion 204 formed. This versatile hinge device 200 has a projection 231 of the camshaft 230 is engaged with the hinge pin 206, the hinge pin 206 is penetrated through the stop angle adjustment nut 207 coupled to the refrigerator body 202. By inserting into the groove, the door 201 is connected to the refrigerator main body 202 by the versatile hinge device 200.

The refrigerator door connection structure as described above has the refrigerator 20 by the versatile hinge device 200 such that the door 201 is rotatable with respect to the refrigerator main body 202 with the shaft centered on one side of the door 201. It is connected to the top of the body 202. To this end, one buried portion 204 corresponding to the shape of the versatile hinge device 200 is formed at each end at one end of the door 201, and the versatile hinge device 200 is provided at each buried portion 204. Insert is installed.

In the multipurpose hinge device 200, the protrusion 231 of the cam shaft 230 is engaged with the hinge pin 206. That is, the protruding portion 231 of the camshaft 230 is formed in the outer circumference of the polygonal surface, the hinge pin 206 is formed in the same polygonal surface as the protruding portion 231, the camshaft 230 and Hinge pins 206 are engaged with each other.

In addition, the hinge pin 206 is formed in a polygon around the outer circumference thereof, for example, the present invention has a hexagonal shape. And, the hinge pin 206 is again engaged with the through hole formed in the stop angle adjustment nut 207, the through hole of the stop angle adjustment nut 207 is the same as the outer peripheral shape of the hinge pin 206 is engaged with each other.

The stop angle adjustment nut 207 is machined in its outer circumference, and the spline boss groove 205 is formed in the main body fixing portion 203 to which the stop angle adjustment nut 207 is engaged. In this configuration, the stop angle adjusting nut 207 is inserted into and fixed to the spline boss groove 205, and may be inserted again after being separated as necessary.

Thus, the door 201 of the door connection structure for the refrigerator is opened by the user and closed while being controlled by the speed of the internal components of the multipurpose hinge device 200.

Hereinafter, internal components of the versatile hinge device 200 will be described.

FIG. 5 is an exploded perspective view illustrating a coupling relationship of a piston rod vertically moving in the multipurpose hinge device illustrated in FIG. 4A, and FIG. 6A is a cam for guiding the piston rod to move up and down in the multipurpose hinge device illustrated in FIG. 5. Figure 6b is a perspective view of the shaft, Figure 6b is a view showing the position of the guide pin according to the operation of the multipurpose hinge device in the elevating guide groove of the camshaft shown in Figure 6a, Figure 7a to Figure 7e is a multi-purpose shown in Figure 6a Some cross-sectional views showing the internal operation of the hinge device.

As shown in Figures 4a to 5, the housing 210 is a cylindrical body having a constant length, the through-hole is formed along the longitudinal direction in the center of the cross-section. The inner surface of the housing 210 is formed differently according to its longitudinal position, and the upper inner surface 211 has the same inner circumferential shape as the upper cap 220 so that the upper cap 220 is fitted. In addition, a cam shaft guide portion 212 having an outer diameter smaller than the upper inner surface 211 is formed at a lower side of the upper inner surface 211 in the housing 210, and the cam shaft guide portion 212 is mutually provided. A pair of slit 213 facing each other is formed in the vertical direction. In this camshaft guide portion 212, the camshaft 230 is positioned in the state where the present invention is assembled, and the guide pin 240 protruding out of the camshaft 230 is inserted into the pair of slits 213. do. In addition, a lower inner surface 214 on which the piston 260 and the elastic member 270 are positioned is formed at the lower side of the cam shaft guide part 212 on the inner surface of the housing 210.

The upper cap 220 is inserted into the upper inner surface 211 of the housing 210, the thrust bearing 221 to offset the surface friction by the rotation of the cam shaft 230 in the lower portion of the upper cap 220 This is located.

An upper cap hole is formed at the center of the cross section of the upper cap 220 so that the protrusion 231 of the cam shaft 230 penetrates, and the protrusion 231 protrudes out of the upper cap 220 through the upper cap hole. .

The cam shaft 230 is formed with an angled end of the protruding protrusion 231, and a rotational force is transmitted from the outside by connecting another member to the protruding portion 231. In addition, the camshaft 230 has a body portion 233 having a larger cross-sectional diameter than the protrusion 231 is formed stepwise, the interior of the body portion 233 is inserted along the length direction so that the piston rod 250 is inserted connection Grooves are formed. And, the outer circumferential surface of the body portion 233 is formed with a pair of lifting guide grooves 232 facing each other.

As shown in Figure 6a and 7e, the elevating guide groove 232 is the elevating section (a) and the elevating section (a) which is inclined downwardly inclined from the outer circumferential plane shape of the cam shaft 230, The first stop section (b) is formed horizontally in the same line at one end of the lifting section (a) and the upper direction in the first stop section (b) so that the guide pin 240 moved along It is formed to be inclined to the second stop section (c) is stopped so that the guide pin 240 is not moved by the locking. In addition, the elevating guide groove 232 is formed to have a constant width so that the first roller bearing 241 coupled to the guide pin 240 in close contact.

In addition, the elevating guide groove 232 is formed in the same inclination of the elevating portion 232a and the first cam line holding portion 232d 30 ° ~ 60 ° in the elevating section (a). When the inclination of the elevating section (a) is formed in the 30 ° ~ 45 ° because the lifting distance of the piston 260 connected to the guide pin 240 is short, the external force to rotate the cam shaft 230 In comparison, the efficiency of the elastic member 270 is reduced. Therefore, when the slope of the lifting section (a) is 30 ° ~ 45 °, the door that is opened and closed up and down can be closed slowly while absorbing the impact force of the door closed by an external force such as inertial force. And, when the inclination of the lifting section (a) is formed of 45 ° ~ 60 ° of the lifting distance of the piston 260 is long, the compression of the elastic member 270 than the external force for rotating the cam shaft 230 The repulsive force is increased. Therefore, when the inclination of the raising and lowering section (a) is 45 ° ~ 60 °, the door to be opened and closed left and right can be closed more easily and quickly.

The guide pin 240 descends along the rising / lowering section a, which is inclined upward and downward, and does not move up and down in the first stop section b. When the cam shaft 230 rotates continuously, the guide pin 240 proceeds from the first stop section b to the second stop section c, which is slightly inclined upward. Is suspended by the curved first stop portion 232b and is temporarily stopped.

In addition, the elevating guide groove 232 is formed in the second stop section (c), the second stop portion 232c and the third cam line holding portion 232f with the same inclination of 15 ° ~ 60 °. If the slope of the second stop section (c) is less than 15 ° because the force to stop the guide pin 240 is weak because the cam shaft 230 is easily rotated even in the repulsive force or fine external force of the elastic member 270 Inadequate In addition, when the inclination of the second stop section c exceeds 60 °, the force for stopping the guide pin 240 is improved by the engagement of the second stop part 232b. It is unsuitable because it requires a large external force.

In addition, when the guide pin 240 is raised by the repulsive force of the compressed elastic member 270, the hydraulic pressure of the upper side of the piston 260 is the elastic force of the elastic member 270 near the limit point where the piston 260 may rise. By acting larger, the piston 260 can be sharply lowered in the reverse direction. Therefore, the elevating guide groove 232 is in contact with the first cam bearing 232d is in close contact with the first roller bearing 241 coupled to the guide pin 240, the guide pin 240 is raised and lowered Prevent it from falling out. In addition, the guide pin 240 may cause internal noise and damage to internal components due to an irregular movement in the initial stage of entering the lifting section (a) from the first stop section (b). In order to prevent this, the second guide line holding portion 232e is formed to be bent in the lowering guide groove 232 below the first stop portion 232b.

As described above, the guide pins 240 are inserted into the pair of lifting guide grooves 232, and the guide pins 240 move along the path in which the pair of lifting guide grooves 232 are formed. In addition, the guide pin 240 is a portion protruding to the outer surface of the camshaft 230 is located in the pair of slits 213 of the housing 210, also along the path of the slit 213 formed up and down Will move. In addition, the guide pins 240 are provided with first and second roller bearings 241 and 242 so as to reduce friction while contacting the elevating guide grooves 232 and the slits 213. That is, the first roller bearing 241 is in the position of the guide pin 240 in contact with the elevating guide groove 232 of the camshaft 230, the second roller bearing 242 is the slit 213 of the housing 210. Are fitted at positions of the guide pins 240 abutting each other. In the guide pin 240, the first washer 243 is disposed between the first roller bearing 241 and the piston rod 250, and the second washer 244 is the first and second roller bearings 241 and 242. ), Respectively, and the first and second roller bearings 241 and 242 are positioned to be in close contact with no play in the longitudinal direction of the guide pin 240.

In addition, the piston shaft 250 coupled to the guide pin 240 is connected to the cam shaft 230. The piston rod 250 has a cylindrical shape, and a guide pin 240 is coupled to an upper portion thereof, and a piston 260 is integrally coupled to a lower portion thereof. Piston rod 250 has a channel long groove is formed along the longitudinal direction in the center of the cross section, a spring 252 is installed in this channel long groove. The flow path adjusting groove 254 having an inner cross-sectional diameter smaller than the flow path long groove is installed in the flow path long groove of the piston rod 250. The flow path adjusting port 254 is formed as an orifice-shaped first speed control passage whose cross section diameter is gradually narrowed so as to control the flow amount of oil therein. For this reason, when the hydraulic control rod 280 is located in the first speed adjusting passage, the cross-sectional area in which oil may flow in accordance with the vertical movement of the piston rod 250 is changed, and the flow amount of oil is adjusted. In addition, the reduction passage 253 is formed in the piston rod 250 to the upper side slightly higher than the piston 260 to connect the inside and outside of the piston rod 250.

The piston 260 is integrally coupled to the piston rod 250, ascending and descending from the lower inner surface 214 of the housing 210 by hydraulic or elastic force. At this time, the upper end of the piston 260 is in contact with the cam shaft guide portion 212 is limited to move upward. In addition, the oil ring 264 is coupled to the outer circumference of the piston 260, so that the piston 260 is in close contact with the lower inner surface 214, and oil flows into a gap between the piston 260 and the lower inner surface 214. Is prevented.

In addition, the piston 260 is provided with a second speed control passage 261 penetrating the upper and lower portions of the piston 260 so that the oil filled in the housing 210 can move from the bottom to the top. The second speed adjusting passage 261 has a shape in which its cross-sectional area becomes wider as it progresses from the bottom to the top thereof, and a check ball 262 is installed inside the second speed adjusting passage 261. The check ball 262 has a cross-sectional diameter larger than the lower side of the second speed adjusting passage 261 and smaller than the upper side. As a result, the check ball 262 moves upward when the oil flows from the bottom of the piston 260 to the top, thereby allowing the oil to flow easily. On the other hand, the check ball 262 is moved to the lower side when the oil is to flow to the lower portion of the piston 260 is blocked by the lower side of the second speed adjusting passage 261, thereby limiting the flow of oil.

A coil spring, which is an elastic member 270, is inserted into the lower portion of the piston 260, and the hydraulic control rod 280 is positioned at the center of the elastic member 270.

The hydraulic control rod 280 of the head portion 281 is inserted into the first speed adjusting passage of the piston rod 250, to control the flow rate of the oil to control the falling speed of the piston rod 250 and the piston 260. . The head portion 281 of the hydraulic control rod 280 has a spherical shape and has a cross-sectional diameter slightly smaller than the first speed adjusting passage of the piston rod 250, and the bent portion, which is the lower end of the head portion 281, has a head portion 281. It is bent to have a relatively small cross-sectional diameter. The lower portion 282 of the hydraulic control rod 280 is connected to the flow rate control bolt 285 in a pivoting manner.

In addition, an elastic force control plate 272 for supporting the elastic member 270 is positioned below the elastic member 270, and a hole is formed at the center of the elastic force control plate 272 to allow the hydraulic control rod 280 to pass therethrough.

An elastic force adjusting opening 274 is in contact with a lower portion of the elastic force adjusting plate 272, and an elastic force adjusting opening 274 is formed in a threaded outer circumference thereof to a through hole of a lower cap 290 coupled to a lower portion of the housing 210. Screwed together. Therefore, when the elastic force of the elastic member 270 is to be adjusted, the elastic force adjusting tool 274 is rotated to raise and lower the elastic force adjusting plate 272 to adjust the compression ratio of the elastic member 270. The lower force 282 and the flow rate control bolt 285 of the hydraulic control rod 280 are inserted into the elastic force adjusting opening 274.

Hereinafter will be described in detail with respect to the operation of the refrigerator door connection structure as described above.

As shown in Figures 3a to 7e, the door connecting structure for the refrigerator of the present invention is the cam shaft 230 of the multipurpose hinge device 200 is hinge pin 206 when the door 201 is opened by the user And fixed to the refrigerator main body 202 by the stop angle adjustment bolt 207, the housing 210 of the versatile hinge device 200 is rotated along the door 201. Thus, relative rotational force is transmitted to the camshaft 230 of the versatile hinge device 200 so that the internal components operate.

That is, when the rotational force is transmitted to the camshaft 230, the guide pin 240 is to move in the lower direction along the elevating guide groove 232. Then, as shown in FIGS. 7A and 7B, a force to move downward is applied to the piston 260 that cooperates with the guide pin 240, and the oil located under the piston 260 adjusts the second speed. It starts to move upward through the flow path 261.

Then, the guide pin 240 moves in the lifting section (a) as in the operating state in the lifting guide groove 232 shown in Figure 6b, the piston rod 250 and the piston 260 is an elastic member ( 270) compresses and descends. In addition, the guide pin 240 reaches the second stop section c when the cam shaft 230 rotates continuously, and the guide pin 240 of the curved first stop section b of the elevating guide groove 232. The movement is restricted by the first stop portion 232b, so that the piston 260 is kept at a stopped state. In this state in which the piston 260 is stopped, the door 201 is not rotated and is stopped and maintained in the open state.

In addition, in the door connection structure for the refrigerator according to the present invention, the stopping angle of the door 201 is adjusted according to a user's selection. That is, the user rotates the hinge pin 206 to rotate the camshaft 230 at a predetermined predetermined angle. Then, the hinge pin 206 is inserted into the stop angle adjusting nut 207, and the stop angle adjusting nut 207 is fixedly coupled to the spline boss groove 205 of the main body fixing part 203. Then, the cam shaft 230 of the versatile hinge device 200 is rotated at a predetermined angle in advance as described above, so that the stop angle and the rotation range of the door 201 can be adjusted.

And, the refrigerator door connection structure of the present invention, when a slight external force is transmitted to the door 201 in the open state, the housing 210 of the multipurpose hinge device 200 rotates along the door 201. Then, the guide pin 240 passes through the curved first stop portion 232b and leaves the second stop section c. Then, the piston 260 starts to move upwards by the repulsive force of the compressed elastic member 270, and the guide pin 240 connected to the piston 260 also moves up and down the lifting guide groove 232. Rise along (a).

At this time, the upper oil of the piston 260 does not pass to the second speed adjusting passage 261 by the check ball 262, the reduction of the passage 253 and the first speed adjusting passage of the piston 260 Move to the bottom. As shown in FIG. 7C, the oil flow rate is such that the hydraulic control rod 280 is positioned in the first speed regulating passage, so that the flow amount is small at the initial stage of the piston 260 rising, and the piston 260 also rises at a low speed. In addition, when the bent portion of the hydraulic control rod 280 is located in the first speed adjusting passage as shown in FIG. 7D, the piston 260 rises at a high speed due to the increased amount of oil, as shown in FIG. 7E. When the head portion of the hydraulic control rod 280 is located in the first speed adjusting passage (that is, the point close to the rising limit of the piston), the flow amount of the oil decreases again and moves at a low speed.

Then, the door 201 is closed by adjusting the speed in the same manner as the movement speed of the piston 260 by interlocking with the piston 260. That is, the door 201 rotates at a low speed at the initial time when an external force is applied, descends at a high speed, and closes while rotating at a low speed at a point nearly touching the refrigerator main body 202 again.

In another embodiment of the present invention, the versatile hinge device 300 is installed in a refrigerator in which the door 301 is opened and closed from side to side.

FIG. 8A is an exploded perspective view of a refrigerator showing a door connection structure in which a versatile hinge device according to another embodiment of the present invention is installed, and FIG. 8B is an enlarged view of a part of the door connection structure shown in FIG. 8A.

As illustrated in FIGS. 8A and 8B, the door connection structure for the refrigerator may include the door 301 so that the door 301 may be rotated to the left and right with respect to the refrigerator main body 302 at the center of one end of the door 301. Is connected to the refrigerator body 302 by the versatile hinge device 300. To this end, one buried portion 304 corresponding to the shape of the multipurpose hinge device 300 is formed at the top or bottom one at one end of the door 301, and the multipurpose hinge device 300 is provided at each buried portion 304. Insert is installed. At this time, the shape of the buried portion 304 may be variously modified according to the shape of the housing in addition to the rectangular cross-sectional shape so that the housing of the versatile hinge device 300 is more firmly inserted.

And, the multi-purpose hinge device 300 is fixed to the upper end of the housing coupled to the door upper cover 303 by a bolt, the door upper cover 303 is the first reinforcing plate (1) to improve the binding force of the multi-purpose hinge device (300) 305) is added.

The combined hinge device 300 is thus projected through the camshaft projecting portion of the upper upper cover 303. The protrusion of the camshaft is formed in a polygonal outer circumference thereof, and is engaged with the inner side of the stop angle adjusting bolt 307.

The stop angle adjustment bolt 307 is formed so that its inner circumferential shape corresponds to the outer circumferential shape of the protruding portion, and the outer circumferential shape of the other end is processed into a spline or serge shape to be engaged with the main body fixture 306.

The main body fastener 306 is bent at right angles to a member of a certain length is engaged with the stop angle adjusting bolt 307, the other side is fixed to the refrigerator body 302 by a fixing bolt. One side of the main body fixture 306 is processed to the spline or serration boss shape to the inner side to engage the stop angle adjustment bolt 307, in this embodiment the second reinforcement to improve the coupling force on one side of the main body fixture 306 The plate 308 is padded and fixed.

In the door connection structure for a refrigerator according to another embodiment of the present invention, the protrusion of the versatile hinge device 300 is connected and fixed by the main body fixture 306, so that the versatile hinge device 300 operates as in the above embodiment. The door 301 is opened and closed.

In addition, the door connection structure of the present invention can be applied to opening and closing devices, such as a mobile phone, a notebook, which is configured such that not only a refrigerator, but also two members are open or contact with each other about one axis.

As described in detail above, the refrigerator door connection structure of the present invention has an advantage of making the exterior of the refrigerator beautiful because a hinge device is installed inside the door.

In addition, the door connection structure for a refrigerator of the present invention has the advantage that the door is closed by adjusting the speed due to the operation of the multi-purpose hinge device.

In addition, the door connection structure for a refrigerator of the present invention, when the door is installed in the refrigerator to open and close up and down, the camshaft of the versatile hinge device can be rotated and fixed at a set angle, the advantage that the door can be adjusted to stop the opening There is this.

Although the technical idea of the door connecting structure of the present invention has been described above with the accompanying drawings, this is illustrative of the best embodiment of the present invention and is not intended to limit the present invention. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

Claims (4)

In the door connecting structure is provided between the main body and the door is a hinge device, the door is opened and closed with respect to the main body by the axis of the hinge device, The hinge device includes a housing forming an exterior, a cam shaft protruding outwardly of the housing and rotating by an external force, a piston moving up and down in the longitudinal direction of the housing in association with the rotation of the cam shaft, An elastic member that compresses or repels the piston as it moves up and down, and a hydraulic control rod for controlling the flow amount of oil respectively positioned above and below the piston; The housing is embedded in a groove formed at one end of the door, and interlocks with the rotation of the door; The cam shaft has a multi-purpose hinge device, characterized in that the projecting portion of the housing is connected to the inner circumference of the stop angle adjustment means, the stop angle adjustment means is coupled to the body fixture attached to the main body the outer circumference Door connection structure. The guide shaft of claim 1, wherein the cam shaft has a lifting guide groove which is inclined along its outer circumferential surface, and a slit is formed in the longitudinal direction of the inner surface of the housing, so that a guide pin inserted into the lifting guide groove is formed in the cam shaft. The guide pin is moved along the elevating guide groove by the rotation of the camshaft, the guide pin is connected to the piston, and the piston moves up and down in conjunction with the rotation of the camshaft. Door connection structure with hinged device. 3. The camshaft of claim 2, wherein the camshaft is engaged with a hinge pin having the same inner circumference shape as the portion protruding to the outside of the housing, wherein the hinge pin has a polygonal outer circumference and the same as the outer circumference of the hinge pin. A shape is formed in the center of the inner cross-section of the stop angle adjusting means, the hinge pin and the stop angle adjusting means is coupled to each other, the door connecting structure is installed, characterized in that the coupling is fixed. According to claim 2 or 3, wherein the stop angle adjustment means the outer periphery is processed into a spline shape, the spline boss groove corresponding to the spline shape of the stop angle adjustment means is formed inside the main body fixture, the stop angle adjustment A door connecting structure provided with a versatile hinge device, characterized in that the means are engaged with the inside of the body fixture.