JP4654628B2 - Door device and refrigerator - Google Patents

Description

  The present invention relates to a door device having a self-closing function and a deceleration function.

  Conventionally, some drawer-type storage cases include a self-closing device (see, for example, Patent Document 1).

  FIG. 10 is a configuration diagram of a conventional door device. As shown in FIG. 10, essential parts of the self-closing device are the inclined portion 3, the guide track 4, the drive pin 5, the tension spring 6, and the damper 11.

  The guide track 4 is formed by a groove disposed in a rail 7 that can be fixed to the side wall 2 of the main body. The drive pin 5 can be directly fixed to the drawer wall 1 or the drawer rail on the drawer side of the drawer guide machine body.

  The inclined portion 3 is guided into the guide track 4 by two bolts 8. The guide track 4 consists of a rear long and straight part 4 'and a front arcuate part 4 ". The tension spring 6 is secured by its rear end on the main body side, for example to the main body side wall 2. The door 11 is pulled out. It is a flat plate formed at the tip of the wall 1.

  The damper 11 is a speed reducing unit fixed to the rail 7, and the tip of the operating portion of the damper 11 abuts on the inclined portion 3.

  With the above configuration, when the drawer is in the inserted position, it extends into the slot 9 opened upward from the inclined portion 3. The slot 9 has an oblique side wall 10 that facilitates insertion of the drive pin 5.

  When the drawer is opened, the inclined part 3 is moved along the straight part 4 'of the guide track 4 in the direction of arrow A until it reaches the arcuate part 4 "of the guide track 4. In this position, the inclined part 3 is inclined. The part 3 is inclined forward and the drive pin 5 is further moved from the inclined part 3. Due to the guide provided by the two bolts 8 and the dimensioning of the arc of the part 4 ', the inclined part 3 is pulled out. Is locked in its forward position when it is in its retracted position, ie not automatically pulled back by the tension spring 6.

  When the drawer is inserted, the drawer is freely moved over the front part of the movement path until the drive pin 5 re-engages with the slot 9 in the inclined part 3. The inclined portion 3 is pushed back by the sliding force of the drive pin 5. As soon as the inclined part 3 is moved from the arcuate part 4 "and in the straight part 4 'of the guide track 4, the tension spring 6 becomes effective, i.e. the inclined part 3 is first moved by the movement of the drawer, while the tensioning part 3 is pulled. The spring force of the spring 6 is transmitted to the drawer via the inclined part 3 and the drive pin 5, which means that the tension spring 6 hears the drawer into the body by means of the inclined part 3. In this way, the drawer is pushed halfway. Can be fully retracted into the body.

In addition to the self-closing function, a deceleration function can be provided in addition to the self-closing function by applying an oil damper or the like that absorbs an impact by utilizing the viscosity of oil that has been widely used in the past. Can be provided.
JP-A-2-286102

  However, in the structure of the conventional door device described above, in the drawer provided with a plurality of storage units, when the size and weight of the storage units are different, the load when the storage unit is decelerated is different if the same damper is used. For this reason, the deceleration speed of the drawer differs depending on the storage unit, and there is a problem that the usability is poor.

  Also, when applying to refrigerators etc. where multiple storage parts each have a different temperature range, especially when using an oil damper, the shock absorption capacity also varies because the viscosity of the oil in the oil damper varies depending on the temperature characteristics. However, the deceleration speed of the drawer varies among the storage rooms in each temperature zone, and there is a problem that the usability is poor.

  This invention solves the said conventional subject, and it aims at providing the door apparatus with which the deceleration speed by the damper in a some accommodating part becomes constant in drawer | drawer provided with the several accommodating part.

  In order to solve the above-described conventional problems, the door device of the present invention is a drawer including a housing and a plurality of storage members that are engaged with the housing and provided with a door on the front surface side. A rail member that allows the storage member to move back and forth, a self-closing device having a self-closing function for self-closing the door, a damper for reducing the speed of closing the door when the door is closed, and the damper A speed adjustment mechanism that adjusts the deceleration speeds of the plurality of doors to be substantially constant when operating is provided.

  Thereby, the deceleration speed by the damper in a some accommodating part can be made constant.

  The door device of the present invention can realize high-quality door opening and closing with good usability by making constant the deceleration speed by the dampers in the plurality of storage units.

The invention according to claim 1 is a door device comprising a refrigerator main body and a plurality of drawers provided with a storage member engaged with the refrigerator main body and provided with a door on the front surface side. A rail member that allows the storage member to move back and forth, a self-closing means that self-closes the door, a damper that decelerates a closing speed of the door when the door is closed, and a plurality of the members when the damper operates. comprising a speed adjusting mechanism which decelerates the speed of the door is adjusted to be substantially constant, said rail member has a fixed rail is fixed to the refrigerator main body, the damper is said is fixed to the fixed rail By providing a door device arranged so that a deceleration action occurs in the direction in which the door closes and no load is applied in the direction in which the door opens, the deceleration speed by the dampers in a plurality of storage parts is constant. It can be.

  According to a second aspect of the present invention, in addition to the first aspect of the invention, the speed adjustment mechanism is a mechanism that is connected to the damper and rotates around a fulcrum, and the storage member or the rail member A mechanism radius, which is a distance between the action point and the fulcrum, changes as the door device moves, and the operating speed during damper operation can be adjusted with a simple configuration. it can.

  According to a third aspect of the present invention, since the damper is an oil damper that absorbs an impact by utilizing the viscosity of the oil, a general-purpose damper can be used, and it is possible to ensure low cost and high reliability.

  The invention according to claim 4 is that the plurality of drawers are used in different temperature environments, and the speed adjusting mechanism adjusts the deceleration speed of the plurality of doors to be substantially constant, Even if the shock absorption is different due to the difference in the viscosity of the oil in the oil damper due to the difference in temperature characteristics, it is possible to reduce the variation in the drawer deceleration speed between storage rooms and improve the convenience of the refrigerator. it can.

  According to a fifth aspect of the present invention, there is a second position where the damper starts a deceleration operation closer to the housing than a first position where the self-closing function of the door starts by the self-closing device. By starting the deceleration operation after starting the operation, it is possible to avoid the danger of pinching a hand or a finger by the self-closing of the door and to improve safety.

  According to a sixth aspect of the present invention, the damper releases the deceleration operation in a range between the third position and the fully closed position that are closer to the housing than the second position where the damper starts the deceleration operation. By increasing the self-closing speed from the third position to the fully closed position, it is possible to shorten the time until the valve is fully closed and to close the door reliably.

  The invention according to claim 7 forms a plurality of storage chambers that are substantially sealed by partitioning the plurality of storage members with a heat insulating wall, and the temperature in the plurality of storage chambers is a refrigeration temperature zone or a freezing temperature. It is a refrigerator provided with the door device according to any one of claims 1 to 6, wherein a deceleration speed by dampers in a plurality of storage units can be made constant, and is easy to use and has high quality. A refrigerator can be provided.

  According to an eighth aspect of the present invention, a mechanism radius of the speed adjustment mechanism disposed in the storage room in the refrigeration temperature zone is greater than a mechanism radius of the speed adjustment mechanism disposed in the storage chamber in the refrigeration temperature zone. Therefore, a constant deceleration operation speed can be obtained even in storage rooms with different temperature zones, and it is easy to use and a high-quality refrigerator can be provided.

  DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings. The same reference numerals are given to the same configurations as those of the conventional example or the embodiments described above, and detailed descriptions thereof will be omitted.

  The present invention is not limited to the embodiments.

(Embodiment 1)
1 is a side view of a refrigerator according to Embodiment 1 of the present invention. FIG. 2 is a side view of the door device according to Embodiment 1 of the present invention. FIG. 3 is a view taken in the direction of arrow A in FIG. 2 according to Embodiment 1 of the present invention. FIG. 4 is an operation diagram according to the first embodiment of the present invention. FIG. 5 is an operation diagram in the first embodiment of the present invention. FIG. 6 is a characteristic diagram of the damper according to the first embodiment of the present invention. FIG. 7 is an enlarged view of the speed adjustment mechanism according to Embodiment 1 of the present invention. FIG. 8 is an operation diagram of the connecting member in the first embodiment of the present invention. FIG. 9 is an enlarged view of the speed adjustment mechanism according to Embodiment 1 of the present invention.

  1, 2, and 3, a drawer-type storage chamber 101 is formed in the lower part of the refrigerator main body 100, and the storage chamber 101 is provided with a door device 110.

  The door device 110 mainly includes a door 111, a support base 112, a storage member 113, and a rail member 120.

  The door 111 is a heat insulating plate installed so as to close an opening formed on the front surface of the storage chamber 101.

  The support base 112 fixes the door 111 and the rail member 120.

  The storage member 113 is a container having an open upper surface, and is disposed in such a manner that the upper portion of the storage member 113 is fixed to the upper portion of the support base 112.

  The rail member 120 mainly includes an operation rail 121, an intermediate rail 122, and a fixed rail 123. The operation rail 121 is fixed to the storage member 113 and can be moved horizontally back and forth together with the door device 110. The intermediate rail 122 is a rail connecting the operating rail 121 and the fixed rail 123, and is connected to both the operating rail 121 and the fixed rail 123 so as to be horizontally movable. The fixed rail 123 is fixed to the refrigerator main body 100 so that the door device 110 can be moved horizontally, and a fan-shaped groove 124 is formed on the side wall surface. Here, a protrusion 125 is formed near the rear end of the operation rail 121 toward the inner surface of the refrigerator main body 100.

  The damper 130 is a rotary damper with a one-way clutch function that is fixed to the side wall surface of the fixed rail 123 and has a fulcrum 131 as a rotation center. Since the damper 130 is installed inside the refrigerator, it is desirable to use a grease damper that is resistant to a low temperature environment. Here, the door device 110 is disposed so that a deceleration action occurs in the closing direction, and conversely, no load is applied in the direction in which the door device 110 opens.

  The speed adjustment mechanism 140 is a flat plate-like mechanism member that is fixed to the damper 130 and rotates around the fulcrum 131. In the installed state, the speed adjustment mechanism 140 is positioned in the rear direction of the refrigerator main body 100 with respect to the protrusion 125. To do. That is, the front side surface 141 of the speed adjustment mechanism 140 comes into contact with the protrusion 125. Further, the speed adjustment mechanism 140 is connected to the groove 124 via a connecting portion 142 formed near the center of the speed adjustment mechanism 140.

  At this time, due to the action of the torsion spring 143 disposed in the vicinity of the fulcrum 131, the speed adjustment mechanism 140 is tilted forward of the refrigerator main body 100 in a no-load state.

  Here, in FIG. 4, when the projection 125 is moved forward by a distance X1 from the fully closed state, that is, the door 111 is pulled out from the refrigerator main body 100, and between the inner surface of the door 111 and the front surface of the refrigerator main body 100. At the third position where the distance is L1, the speed adjustment mechanism 140 is tilted backward by the protrusion 125, and at this time, the upper end portion 143 of the speed adjustment mechanism 140 has a shape that is horizontal to the operating rail 121. Further, when the door device 110 is in the third position from the fully closed state, the connecting portion 142 is positioned at the rearward end 124a of the groove 124, and the speed adjusting mechanism 140 does not tilt further rearward.

  In FIG. 5, when the door device 110 is in an open state and the protrusion 125 moves forward by a distance X2 with respect to the fully closed state, that is, the door 111 is pulled out from the refrigerator main body 100, and the inner surface of the door 111 and the refrigerator main body 100, the speed adjustment mechanism 140 is rotated forward by the action of the torsion spring 143 at the second position where the distance between the front surfaces is L2, and the connecting portion 142 contacts the front end 124b of the groove 124. Do not tilt forward.

  When the opening is further advanced, the contact between the front side surface 141 of the speed adjustment mechanism 140 and the protrusion 125 is released.

  Here, FIG. 6 shows the relationship between the temperature of the damper 130 and the torque, and the torque tends to increase as the temperature decreases due to the increase in the viscosity of the grease. Here, when there are a plurality of storage rooms with different temperature zones, such as a refrigerator, the operating speed of the door device 110 in each temperature zone changes, so in this embodiment, the speed adjustment mechanism 140 is a protrusion. The mechanism radius R, which is the distance between the action point 144 that abuts on 125 and the fulcrum 131, was changed in accordance with each temperature zone. That is, the relational expression when the possession torque in the refrigeration temperature zone is T1, the possession torque in the refrigeration temperature zone is T2, the mechanism radius in the refrigeration temperature zone is R1, and the mechanism radius in the refrigeration temperature zone is R2, the relational expression is expressed by (Equation 1). Is done.

  As shown in FIG. 7, the mechanism radius R2 in the freezing temperature zone is set larger than the mechanism radius R1 in the refrigeration temperature zone.

  The self-closing means 150 is a constant load spring fixed to the fixed rail 123, and is wound around a cylindrical bobbin 151 pivotally supported on the side wall surface of the fixed rail 123 and a body portion of the bobbin 151. And an elastic body 152.

  The connecting member 160 is mainly composed of a guide rail 161, an inclined member 162, and a link mechanism 163. The guide rail 161 is fixed to the lower surface of the fixed rail 123. Here, a groove 161 a having both ends closed is formed on the side wall of the guide rail 161, and a groove 161 b having both ends closed is formed on the lower wall of the guide rail 141. Further, a groove 161 c having an open end is formed near the front side end of the side wall of the guide rail 161.

  The inclined member 162 is connected to the end of the elastic body 152 at the end of the connecting portion 162a that protrudes downward through the groove 161b, and the connecting portion 162a is guided by the groove 161b so as to be horizontally movable. Further, two protrusions 162b and 162c are formed on the side surface of the inclined member 162, and the inclined member 162 is fitted into the groove 141a so that the two protrusions 162b and 162c protrude from the side wall of the guide rail 161. To move horizontally.

  The link mechanism 163 is fixed downward with respect to the side wall of the operation rail 121, and a protrusion 163 a is formed horizontally at the lower end of the link mechanism 163 toward the fixed rail 123. Here, while the door device 110 is in the fully closed state and the protrusion 125 is moved forward by the distance X2, the tip of the protrusion 163a is located between the two protrusions 142b and 142c in the installed state.

  Furthermore, in FIG.4, FIG.5, FIG.8, in the 2nd position where the door apparatus 110 is pulled out ahead and the distance between the inner surface of the door 111 and the refrigerator main body 100 becomes L2, the inclination member 142 is the protrusion 142b. Is tilted by being fitted in the groove 141c. As a result, the connection between the inclined member 142 and the link mechanism 143 is released, that is, after the second position, the connection between the operation rail 121 and the damper 130 is released, and the inclination of the inclined member 142 is inclined. The member 142 maintains the second position.

  Here, in this embodiment, L1 is set between 0 mm and 10 mm, which is a distance that a human finger cannot easily enter.

  Further, L2 is set between 10 mm and 150 mm, which is the distance that a human finger or fist may be pinched between objects.

  The operation | movement and effect | action are demonstrated below about the door apparatus comprised as mentioned above.

  First, the fully closed door device 110 gradually moves forward when the door 111 is pulled by a human hand. At this time, the link mechanism 143 moves forward together with the door device 110. Accordingly, the elastic body 152 connected to the inclined member 142 is stretched and moved forward while the protrusion 163a is in contact with the protrusion 142b.

  Here, when the door device 110 reaches the second position, the connection between the operation rail 121 and the damper 130 is released, and the inclined member 142 maintains the second position by the action of the inclined inclined member 142. To do. Furthermore, the speed adjustment mechanism 140 stops in a state where it is tilted forward.

  Next, when the door device 110 is pushed by a human hand from the fully open state, the door device 110 gradually moves backward, and when the door device 110 reaches the second position, the protrusion 163a comes into contact with the protrusion 142c. The tilting member 142 is released from tilting, the door device 110 is self-closed by the elastic force of the elastic body 152, and the damper 130 is operated by the front side surface 141 of the speed adjusting mechanism 140 coming into contact with the protrusion 125. The door device 110 is self-closing while decelerating. That is, at a distance more than a person's finger or fist is caught between objects, the object is self-closed at a predetermined self-closing speed.

  Next, when the door device 110 is between the second position and the third position, the mechanism radius R changes as the door device 110 moves as shown in FIG. 9. In the present embodiment, the mechanism radius R is minimized when the speed adjustment mechanism 140 is upright. In other words, the deceleration capability increases from the second position toward the state where the speed adjustment mechanism 140 stands upright, and when the door device 110 is strongly pressed and closed, the extra speed until the speed adjustment mechanism 140 stands upright. Can absorb shock.

  Next, when the door device 110 reaches the third position, the speed adjustment mechanism 140 tilts backward, and at this time, the upper end portion 143 of the speed adjustment mechanism 140 has a shape that is horizontal to the operating rail 121. Therefore, the effectiveness of the damper 130 is canceled and only the self-closing operation by the elastic body 152 is performed. That is, a predetermined self-closing speed can be obtained at a distance where a human finger does not easily enter.

  Furthermore, by setting the relationship between the mechanism radius of the refrigeration temperature zone R and the mechanism radius of the refrigeration temperature zone R2 to a predetermined relationship, the operating speed of the door device 110 is kept constant even in each storage room having a different temperature zone. can do.

  As described above, the door device 110 according to the present embodiment includes the storage member 113 in the space formed in the refrigerator main body 100, and the refrigerator main body includes the door 111 provided on the front surface of the storage member 112. Rail member 120 that is fixed to 100 and allows the storage member 113 to move back and forth, a self-closing means 150 that self-closes the door device 110, a damper 130 that decelerates the door device 110, and an operating distance of the damper 130 is increased. And the speed adjusting mechanism 140 increases the operating distance of the damper 130, thereby increasing the operating distance of the damper 130, which can be inexpensive and increase the deceleration operating distance.

  Further, as the mechanism radius R changes as the door device 110 moves, a high-grade operation can be realized by adjusting the self-closing speed when the damper 130 is operating.

  Further, the mechanism radius R of the speed adjustment mechanism 140 disposed in the storage chamber 113 in the refrigeration temperature zone is smaller than the mechanism radius R of the speed adjustment mechanism 140 disposed in the storage chamber 113 in the refrigeration temperature zone. A constant operating speed can be obtained even in storage rooms with different temperature zones, and high-quality door opening and closing can be realized.

  In addition, at the second position where a gap within a predetermined value range is formed between the door 111 and the door 111 or the refrigerator body 100 adjacent to the door 111, the damper 130 starts the deceleration operation at least, thereby increasing the moving speed of the door 111. It will self-close while decelerating to a constant speed, and the drawer can be self-closed while ensuring safety.

  Further, in the range from the third position to the fully closed position where the gap between the door 111 and the adjacent door 111 or the casing is equal to or less than a predetermined value, the damper 130 releases the deceleration operation from the third position. By increasing the self-closing speed at the fully closed position, the time until the fully closed position can be shortened.

  As described above, the door device according to the present invention is equipped with a speed adjusting mechanism having a mechanism radius set to each value in addition to the silicon damper in the door device arranged in the storage room having different temperature zones. Since the same deceleration operation can be obtained even in storage rooms in different temperature zones, the present invention can be applied to system kitchens, furniture, and commercial refrigerators.

Side view of refrigerator in embodiment 1 of the present invention. Side view of the door device according to Embodiment 1 of the present invention. FIG. 2 is a view in the direction of arrow A in FIG. Operational diagram of door device in Embodiment 1 of the present invention Operational diagram of door device in Embodiment 1 of the present invention Damper characteristic diagram of Embodiment 1 of the present invention The enlarged view of the speed adjustment mechanism in Embodiment 1 of this invention Operational diagram of connecting member in Embodiment 1 of the present invention The enlarged view of the speed adjustment mechanism in Embodiment 1 of this invention Configuration diagram of conventional door device

Explanation of symbols

R mechanism radius 100 housing 111 door 113 storage member 120 rail member 130 damper 131 fulcrum 140 speed adjustment mechanism 144 action point 150 self-closing means

Claims (8)

In a door device comprising a refrigerator main body and a plurality of drawers provided with a storage member engaged with the refrigerator main body and provided with a door on the front side, the storage member provided with the door with respect to the refrigerator main body A rail member that can be moved, a self-closing means that self-closes the door, a damper that decelerates a closing speed of the door when the door is closed, and a deceleration speed of the plurality of doors when the damper is operated There comprising a speed adjusting mechanism for adjusting so as to be substantially constant, said rail member has a fixed rail is fixed to the refrigerator main body, the damper in the direction in which the door is closed is fixed to the fixed rail Is a refrigerator provided with a door device that is arranged so that a deceleration action occurs and no load is applied in the opening direction of the door. The speed adjustment mechanism is a mechanism that is connected to the damper and rotates around a fulcrum, has an action point that contacts the storage member or the rail member, and the action point as the door device moves. The door device for a refrigerator according to claim 1, wherein a mechanism radius that is a distance between the fulcrum and the fulcrum varies. The door device for a refrigerator according to claim 2, wherein the damper is an oil damper that absorbs an impact by using viscosity of oil. The door device for a refrigerator according to claim 3, wherein the plurality of drawers are used in different temperature environments, and the speed adjusting mechanism adjusts the deceleration speed of the plurality of doors to be substantially constant. 5. The refrigerator according to claim 1, wherein a second position at which the damper starts a deceleration operation is located closer to the housing than a first position at which the self-closing function of the door starts by the self-closing device. Door device. 6. The damper according to claim 1, wherein the damper releases the deceleration operation in a range between a third position and a fully closed position that are closer to the housing than the second position at which the damper starts a deceleration operation. The door apparatus for refrigerators as described in a term. The plurality of storage chambers that are substantially sealed are formed by partitioning the plurality of storage members with heat insulating walls, and the temperature in the plurality of storage chambers is a refrigeration temperature zone or a freezing temperature zone. The refrigerator provided with the door device as described in any one. The mechanism radius of the speed adjustment mechanism disposed in the storage room in the refrigeration temperature zone is smaller than the mechanism radius of the speed adjustment mechanism disposed in the storage chamber in the refrigeration temperature zone. A refrigerator provided with the door device described.

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