JP2019135440A - refrigerator - Google Patents

Abstract

To provide a refrigerator which is relatively easily assembled during manufacture and can reduce a load of a second rail on a drive mechanism even if a first rail is displaced with respect to a refrigerator body because of aged deterioration or a weight change due to increased or decreased contents.SOLUTION: A refrigerator includes a refrigerator body having a storage compartment, a drawer to open and close the storage compartment, and a sliding mechanism to slide the drawer in an opening and closing direction with respect to the storage compartment. The sliding mechanism includes a first rail 40 attached to the refrigerator body, a second rail 50 mounted on the drawer and configured to be slide with respect to the first rail, and a drive mechanism 70 mounted on the first rail.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a refrigerator.

  Conventionally, as a refrigerator provided with a drawer, for example, Patent Document 1 includes a refrigerator main body having a storage chamber, a drawer that opens and closes the storage chamber, and a slide mechanism that slides the drawer in the opening and closing direction with respect to the storage chamber. A refrigerator is disclosed.

  And the slide mechanism of the refrigerator disclosed by the said patent document 1 is provided with the 1st rail attached to the refrigerator main body, and the 2nd rail attached to drawer, and it is 2nd by the drive mechanism installed in the refrigerator main body. The rail is configured to slide in the opening / closing direction with respect to the first rail.

  For this reason, if the first rail and the drive mechanism are not accurately installed at the time of manufacture, the second rail presses the drive mechanism and an excessive load is applied to the drive mechanism, so that high assembly accuracy is required at the time of manufacture. For this reason, individual differences occur in the refrigerator, and it is difficult to stabilize the quality. Moreover, even if it can be assembled with high precision during manufacturing, the same thing occurs if the first rail is displaced due to deterioration over time. Furthermore, such a position shift of the first rail may also occur when the load fluctuates due to increase / decrease in the contents (food etc.) accommodated in the drawer.

U.S. Pat. No. 8,668,289

  Therefore, the present invention is relatively easy to assemble at the time of manufacture, and even if the first rail is displaced with respect to the refrigerator main body due to load fluctuation or aging deterioration due to increase / decrease in the contents, the second rail is used. The main object is to provide a refrigerator having a structure that can reduce the load on the drive mechanism.

  That is, the refrigerator according to the present invention is a refrigerator including a refrigerator body having a storage chamber, a drawer that opens and closes the storage chamber, and a slide mechanism that slides the drawer in the opening and closing direction with respect to the storage chamber. The slide mechanism includes a first rail attached to the refrigerator main body, a second rail provided on the drawer and slidable with respect to the first rail, and a drive mechanism provided on the first rail. It is characterized by comprising.

  If it is such, since the drive mechanism was attached to the 1st rail instead of the refrigerator main body, the relative position of the drive mechanism and the 2nd rail only by connecting the 2nd rail to the 1st rail Is determined. Therefore, the operation | work which attaches each member with respect to a refrigerator main body at the time of manufacture becomes markedly easy. In addition, when the first rail is displaced with respect to the refrigerator main body due to deterioration over time, not only the second rail connected to the first rail but also the drive mechanism is similarly displaced, so the second rail and the drive mechanism As a result, an excessive load is prevented from being generated from the second rail to the drive mechanism.

  The slide mechanism may further include a power transmission mechanism that transmits the power of the drive mechanism to the second rail. In this case, the drive mechanism is a box provided on the first rail. And a motor housed in the box, and a drive gear installed on the outer surface of the box and driven by the power of the motor and transmitting the power to the power transmission mechanism. May be.

  If it is such, since it can accommodate in a box other than the drive gear connected to a power transmission mechanism among the gear systems which transmit rotation of a motor, exposure of the said gear system can be stopped to the minimum. . Thereby, the entrainment with respect to a gear system can be prevented. In this case, it is preferable that the box is disposed away from the inner wall of the refrigerator body.

  Further, the driving gear may be disposed at an opening direction side end portion of the first rail, and the refrigerator main body opens a part of the back wall of the storage chamber on the opening direction side. The power transmission mechanism is provided along the second rail, and includes a driving rack gear that meshes with the driving gear, and with the drawer closed, The closing direction side end may be configured to be positioned above the protruding portion.

  If it is such, a drive rack gear can be arrange | positioned in the space where the length with respect to the opening-and-closing direction is comparatively long in a storage chamber, and a drive rack gear can be lengthened. Moreover, the opening / closing distance of the drawer can be increased by disposing the driving gear at the opening direction side end portion of the first rail. As a result, the drawer can be greatly opened with respect to the storage chamber, and the stored items stored in the back side of the drawer can be easily taken out.

  The drive rack gear is installed so as to be movable toward and away from the drive gear with respect to the second rail, and the power transmission mechanism attaches the drive rack gear to the drive gear. In this case, the second rail further includes a regulation mechanism that regulates a moving distance of the driving rack gear in the contact / separation direction with respect to the driving gear, The regulating mechanism may regulate the moving distance so that the driving rack gear can move longer in the closing direction than in the opening direction. The drive gear is installed so as to be movable toward and away from the drive rack gear with respect to the box, and the drive mechanism is an elastic member that urges the drive gear to the drive rack gear. It may further comprise a body.

  For example, when the drawer is opened, the drawer is inclined forward and downward with respect to the storage chamber by its own weight. Along with this, the second rail is inclined with respect to the first rail, and the driving rack gear attached to the second rail approaches the driving gear attached to the first rail and tries to press excessively. A phenomenon occurs. This phenomenon becomes more prominent as the drawer is opened greatly. However, if it is as mentioned above, an elastic body will bend and absorb so that a drive rack gear may not press a drive gear too much, and it can prevent damage to a drive mechanism by this. Further, by providing the restriction mechanism, the moving distance of the driving rack gear to the driving gear is optimized according to the opening degree of the drawer, and the driving rack gear is separated from the driving gear, and the teeth of both gears are separated. It is possible to prevent a situation where the meshing is lost.

  In addition, the box includes a concave portion that accommodates the driving gear and a cap that closes the concave portion on an outer surface thereof, and the concave portion that accommodates the driving gear is closed with the cap, whereby the driving rack gear is provided. The teeth of the driving gear that mesh with the projection may protrude outward from the recess.

  If it is such, the gear system which comprises a drive mechanism can be substantially accommodated in a box, and the entrainment by a gear system can further be suppressed. In this case, it is preferable to make the gap between the driving gear side surface (the surface that is not the tooth surface), the concave portion, and the cap as narrow as possible. Thereby, the penetration | invasion of the foreign material in a recessed part can be prevented.

  The box may be provided with a discharge portion for discharging foreign matter (water, ice lump, dust, etc.) in the recess.

  If it is such, the foreign material which entered the recessed part can be discharged | emitted out of a box, and the damage by a foreign material can be prevented. The foreign matter that has entered the recess is efficiently transported to the discharge portion by the rotation of the driving gear.

  The power transmission mechanism may be a driving rack gear that meshes with the driving gear, and further includes a movement adjustment gear that is disposed on the opposite side of the surface on which the teeth of the driving rack gear are formed. Alternatively, a movement adjustment rack gear arranged to mesh with the movement adjustment gear may be further provided. In this case, the movement adjusting rack gear is disposed so as to face the driving rack gear across the movement adjusting gear, and the driving rack gear and the movement adjusting rack gear have the same tooth tip surface. It may be oriented in the direction.

  With such a configuration, the drive rack gear and the movement adjustment rack gear can be formed apart from each other, so that the movement adjustment mechanism can be made compact. More specifically, in the conventional refrigerator, the movement adjusting rack gear is provided with the tooth tip surface facing upward with respect to the first rail, so that the driving rack gear and the driving mechanism are connected to the movement adjusting rack gear. Therefore, it is necessary to dispose the slide mechanism further below, and accordingly, the vertical width of the entire slide mechanism becomes wider. Then, a general refrigerator has a protruding portion on the lower side of the storage chamber due to the presence of the machine room, and a space longer in the depth direction (front-rear direction) than the lower side is formed on the upper side of the storage chamber. However, if the overall vertical width of the slide mechanism becomes wider as described above, the slide mechanism will interfere with the protrusions, so the total length of the slide mechanism must be shortened. You won't get. However, with the configuration as described above, the vertical width of the entire slide mechanism is narrowed, and even if the overall length in the depth direction of the slide mechanism is increased, it does not interfere with the protruding portion, and the drive rack gear can be set longer, Along with this, the opening distance of the drawer becomes long, and it becomes easy to put in and out the contents.

  Further, the movement adjustment gear and the movement adjustment rack gear are arranged on both sides of the storage chamber of the refrigerator body, and the movement adjustment gear rotates with respect to one of the drawer or the refrigerator body. The movement adjusting rack gear may be installed with respect to the other of the drawer or the refrigerator main body. In this case, it may further include a shaft that spans the both movement adjustment gears and serves as a rotation axis of the both movement adjustment gears.

  If it is such, the shakiness of the both-sides direction (left-right direction) of the drawer withdrawn / inserted from a storage chamber can be suppressed.

  The driving gear may be provided so as to mesh with a tooth tip surface facing the lower side of the driving rack gear and rotate.

  Further, the drive rack gear may be set so that a distance between the tooth tip surface and a surface of the box from which the teeth of the drive gear protrude is 5 mm or less.

  In addition, the slide mechanism may further include a rolling mechanism interposed between the first rail and the second rail so that the second rail can easily slide with respect to the first rail. Good. Thereby, the second rail with respect to the first rail is easily slid by the rotation of the rolling mechanism, and the user can pull out the drawer with a small force.

  According to the present invention, it is relatively easy to assemble at the time of manufacture, and even if the first rail is displaced with respect to the refrigerator main body due to load fluctuation or aging deterioration due to increase / decrease in the contents, the second rail is used. The load on the drive mechanism can be reduced.

It is a schematic diagram which shows the refrigerator which concerns on embodiment. It is a longitudinal cross-sectional view which shows the lower stage of the refrigerator which concerns on embodiment. It is a disassembled perspective view which shows the slide mechanism of the refrigerator which concerns on embodiment. It is a perspective view which shows the opening direction side edge part of the slide mechanism of the refrigerator which concerns on embodiment. It is a perspective view which shows the closing direction side edge part of the slide mechanism of the refrigerator which concerns on embodiment. It is a schematic diagram which shows the slide mechanism attached to the both side walls of the refrigerator which concerns on embodiment. It is a perspective view which shows the box which concerns on other embodiment. It is a side view which shows the 2nd rail and drive rack gear which concern on other embodiment. It is a schematic diagram which shows the slide rail which concerns on other embodiment. It is a schematic diagram which shows the slide mechanism attached to the both-sides wall of the refrigerator which concerns on other embodiment.

  Below, the refrigerator which concerns on this invention is demonstrated based on drawing.

  <Embodiment 1> As shown in FIG.1 and FIG.2, the refrigerator 100 which concerns on this embodiment has the refrigerator main body 10 which has the storage chamber R, the drawer 20 withdrawn / inserted in storage chamber R1, and the drawer 20 in a storage chamber. And a slide mechanism 30 that slides in the opening / closing direction with respect to R1.

  The refrigerator main body 10 is provided with a plurality of chambers in addition to the storage chamber R1, and a machine chamber R2 in which various devices such as a compressor are stored behind the storage chamber R1. The rear wall 11 separating the housing chamber R1 from the machine room R2 is formed with a protrusion 12 whose lower side protrudes toward the opening direction (front side) by the amount of the machine room R2. Accordingly, the storage chamber R1 has a space that is longer in the opening and closing direction in the upper region where the protrusion R2 is not formed than in the lower region where the protrusion 12 is formed. The drawer 20 includes a door plate 21 that closes an opening facing the front of the storage chamber R1.

  As shown in FIGS. 3 to 5, the slide mechanism 30 includes a pair of first rails 40 attached to the side walls 13 of the storage chamber R <b> 1 and a pair of second rails 50 attached to the door plate 21 of the drawer 20. A slide rail 60 interposed between the first rail 40 and the second rail 50 and sliding the second rail 50 with respect to the first rail 40; a drive mechanism 70 provided on the first rail 40; A power transmission mechanism 80 that transmits the power of the mechanism 70 to the second rail 50 is provided.

  The first rail 40 is fixed to both side walls 13 of the storage chamber R1 so as to extend in the opening / closing direction. The first rail 40 is installed in an upper region of the storage chamber R1 and extends so that the end portion on the closing direction side (rear side) reaches the upper portion of the protruding portion 12. And the 1st rail 40 is provided with the attaching part 41 fixed to the side wall 13 of storage chamber R1, and a pair of support piece 42 which stands | starts up perpendicularly with respect to the side wall 13 from the upper side and lower side of the attaching part 41. Yes.

  A drive mechanism 70 is attached to the first rail 40. And the drive mechanism 70 is provided with the box 71 attached to the 1st rail 40, the motor installed in the box 71, and the gear system which transmits rotation of a motor. The box 71 is attached so as to hang down from the lower support piece 42 b of the first rail 40. In the box 40, gears other than the motor, among the gears constituting the gear system, are installed except the last gear 72 (hereinafter also referred to as the drive gear 72) counted from the motor. The driving gear 72 is installed in a recess 73 formed on the outer surface of the box 71, and is disposed at the opening direction side end of the first rail 40. As a result, the driving gear 72 is disposed in the vicinity of the opening end of the accommodation chamber R1. In each figure, gear systems other than the motor and the driving gear are not shown because they are arranged in the box.

  The box 71 is connected to the accommodation room R1 via the first rail 40, and is not directly connected to the accommodation room R1. And the box 71 is spaced apart and installed from the side wall 13 of the storage chamber R1, and is thereby separated from the refrigerator main body 10 in which dimensional variation is likely to occur during manufacturing. Incidentally, although the box 71 is attached to the first rail 40 in this embodiment, the box 71 may be formed integrally with the first rail 40.

  Although not shown, a recess is formed in the inner surface of the storage chamber R1, specifically, the inner surface of the side wall 13 located in the vicinity of the box 71 of the storage chamber R1, and this recess controls the motor stored in the box 71. It is good also as a control box in which a board | substrate etc. are accommodated. This facilitates the wiring of the wiring connected to the motor.

  The second rail 50 is attached so as to extend in parallel from both sides of the rear surface (rear surface) of the door plate 21. In addition, between the 2nd rails 50, it installs so that the storage case C for accommodating a storage thing may be spanned.

  The second rail 50 is formed by bending a long plate material along the longitudinal direction. Specifically, the second rail 50 is bent so that a central line 51 facing the first rail 40 protrudes toward the first rail 40 side. Thereby, the 2nd rail 50 has the state which the center line 51 protruded to the 1st rail 40 side compared with the upper side line 52a and the lower side line 52b. The second rail 50 is provided with a driving rack gear 81 constituting the power transmission mechanism 80 on the lower line 52b with its teeth facing downward. The drive rack gear 81 meshes with a drive gear 72 constituting a drive mechanism 70 installed on the first rail 40, whereby the power of the motor is transmitted to the second rail 50. .

  Further, the driving rack gear 81 is attached to the second rail 50 so that the distance from the tooth tip surface of the box 71 to the surface (upper surface) from which the cutting edge of the driving gear 72 protrudes is 5 mm or less. As a result, a situation in which a finger or the like is caught between the driving rack gear 81 and the driving gear 72 can be prevented.

  The driving rack gear 81 is attached via screws 54 inserted into a plurality of long holes 53 provided in the lower line 52b of the second rail 50. Each elongated hole 53 extends in a direction intersecting (orthogonal in the present embodiment) with respect to the opening / closing direction. Each screw 54 can slide with respect to the elongated hole 53. Thus, the drive rack gear 81 is configured to be slidable along the long hole 53, in other words, along a direction intersecting (orthogonal) with respect to the opening / closing direction. The driving rack gear 81 is provided with an elastic body 82 on a surface facing the lower step formed by the center line 51 and the lower line 52 b of the second rail 50, and is driven by the elastic body 82. The gear 72 is biased. The power transmission mechanism 80 includes the driving rack gear 81 and the elastic body 82.

  The slide rail 60 is a so-called three-member slide rail. Specifically, an outer member 61 fixed to the first rail 40, an inner member 62 fixed to the second rail 50, and an intermediate member 63 interposed between the outer member 61 and the inner member 62 are provided. Yes. The intermediate member 63 can be slid by a ball 64 interposed between the outer member 61 and the inner member 62. The outer member 61 has substantially the same length as the length of the first rail 40 in the longitudinal direction, and is fitted and fixed between the support pieces 52 of the first rail 40. The inner member 50 also has a length that is substantially the same as the length of the first rail 40 in the longitudinal direction, and is fixed to the center line 51 of the second rail 50. Incidentally, the inner member 62 is fixed to the second rail 50 so that its end in the closing direction protrudes.

  Since the outer member 61 is a member that is fixed to the first rail 40 and does not slide with respect to the first rail 40, the outer member 61 is also included in the first rail in the claims. Similarly, since the inner member 62 is a member that is fixed to the second rail 50 and does not slide with respect to the second rail 50, the inner member 62 is also included in the second rail in the claims. That is, the 1st rail in a claim shows the member which does not slide with respect to the refrigerator main body 10 among the members which comprise the slide mechanism 30, and the 2nd rail 50 in a claim is among the members which comprise the slide mechanism 30. A member that does not slide relative to the drawer 20 is shown. The ball 64 corresponds to the rolling mechanism 60a in the claims. That is, the rolling mechanism 60 a is for making it easier to slide the second rail 50 with respect to the first rail 40.

  The slide mechanism 30 further includes a movement adjustment mechanism 90 that adjusts the movement distances of the second rails 50 that slide relative to the first rails 40 to be the same. The movement adjusting mechanism 90 is fixed to the movement adjusting rack gear 91 provided on each of the first rails 40, the shaft 92 spanning both the second rails 50, and both ends of the shaft 92. A movement adjusting gear 93 that meshes with the rack gear 91 is provided.

  More specifically, the movement adjusting rack gear 91 is provided on the upper support piece 42 a of the first rail 40 with its teeth directed downward. Moreover, the shaft 92 is spanably spanned by the closing direction side edge part of the inner member 50 which protruded toward the closing direction from both the 2nd rails 50. As shown in FIG. Further, the movement adjusting gear 93 is fixed so as not to rotate with respect to the shaft 92. Each movement adjustment rack gear 91 is configured to mesh with a movement adjustment gear 93 fixed to both ends of the shaft 92. Both the movement adjusting rack gear 91 and the both movement adjusting gear 93 have teeth arranged at the same pitch. Accordingly, when the shaft 92 rotates with respect to the inner member 62, the movement speed of the movement adjustment gear 93 that meshes with one movement adjustment rack gear 91 and the movement adjustment gear 93 that meshes with the other movement adjustment rack gear 91. The moving speed is set to be substantially the same.

  The movement adjusting rack gear 91 is arranged in parallel with the driving rack gear 81 in the vertical direction, and the tooth tip surfaces of the rack gears 81 and 91 are directed downward. The movement adjustment gear 93 is arranged between the upper surface side opposite to the tooth tip surface of the drive rack gear 81 and the tooth tip surface of the movement adjustment rack gear 91, and is on the upper surface of the drive rack gear 81. It is designed to move by rotating. One end of each rack gear 81, 91 extends in parallel to the upper side of the protruding portion 12 of the storage chamber 11.

  Further, when the second rail 50 attached to the drawer 20 is connected to the first rail 40 attached to the storage chamber 20, the lower line 52 b of the second rail 50 faces the entire driving gear 72. It is like that. That is, the second rail 50 has its lower edge extending below the lower end of the tooth tip surface of the driving gear 72. As a result, the driving gear 72 is hidden by the second rail 50, and it is possible to prevent injuries caused by the user's fingers being caught.

  Next, operation | movement of the drawer 20 of the refrigerator 100 which concerns on this embodiment is demonstrated.

  For example, when an open signal is input to the refrigerator 100 in a state where the drawer 20 is fully closed from an operation unit installed on the front surface of the drawer 20, the motor starts to be driven. The rotation of the motor is transmitted to the driving gear 72 via the gear system, and the rotation of the driving gear 72 is further transmitted to the second rail 50 via the driving rack gear 81. Thereby, the drawer 20 moves to the opening direction side with respect to the storage chamber R1. When the drawer 20 is fully opened, a detection mechanism (not shown) such as a position sensor detects this and the motor stops.

  Next, when a close signal is input to the refrigerator with the drawer 20 fully opened, the motor starts to be driven. The rotation of the motor is transmitted to the driving gear 72 via the gear system, and the rotation of the driving gear 72 is further transmitted to the second rail 50 via the driving rack gear 81. Thereby, the drawer 20 moves in the closing direction with respect to the storage chamber R1. When the drawer 20 is fully closed, a detection mechanism such as a position sensor detects this and the motor stops.

  According to such a configuration, when the drawer 20 is opened and closed with respect to the storage chamber R <b> 1 by the movement adjusting mechanism 90, the moving speed of the second rail 50 with respect to the first rail 40 and the second speed with respect to the other first rail 40. The movement speeds of the rails 50 are adjusted so as to be substantially the same, and thereby, rattling of the drawer 20 in both sides (left and right directions) is suppressed.

  Further, when the drawer 20 moves in the opening direction with respect to the storage chamber R1, the drawer 20 is inclined forward and downward by its own weight. Note that this inclination increases as the drawer 20 approaches the fully open state from the fully closed state. Accordingly, the second rail 50 is slightly inclined with respect to the first rail 40 so that the front end side thereof is directed downward. For this reason, the driving rack gear 81 installed on the second rail 50 moves in the direction of pressing the driving gear 72 and becomes overloaded due to the displacement of the meshing between the gears. It may cause damage to the system. However, according to the above configuration, the elastic body 82 is bent by a pressing force of a certain level or more so as to absorb this movement, so that the driving rack gear 81 moves in accordance with the pressing force, and accordingly, the driving rack gear 81. And the driving gear 72 are kept constant so that the driving gear 72 is not loaded more than necessary.

  Further, the first rail 40 is installed in a region above the projecting portion 12 having a long space with respect to the opening / closing direction of the storage chamber R1, and the driving rack gear 81 provided on the first rail 40 in the closing direction side. The end extends to above the protrusion 12. Further, a driving gear 72 that meshes with the driving rack gear 81 is provided in the vicinity of the opening of the storage chamber R1. Thereby, the moving distance of the drawer 20 with respect to the storage chamber R1 can be secured long, and the drawer 20 can be largely pulled out of the storage chamber R1.

  Other Embodiments As other embodiments, a box 71 shown in FIG. 7 can be cited as a modification of the box of the first embodiment. The box 71 shown in FIG. 7 has a groove extending outward from the recess 73 below the recess 73, and further includes a cap 74 that closes the recess 73. Then, by closing the opening of the recess 73 with the cap 74, only the teeth that mesh with the drive rack gear 81 of the drive gear 72 are exposed from the outer surface of the box 71, and the box 72 extends from the recess 72 to the lower side of the cap 74. A discharge portion 75 that leads to the outside of 71 is formed.

  With such a configuration, the gear system including the driving gear 72 constituting the driving mechanism 70 is hardly exposed from the outer surface of the box 71, and it is possible to prevent the fingers from being caught. In addition, the foreign matter that has entered the recess 72 is sent out from the discharge portion 75, and it is possible to prevent the drive mechanism 70 from operating abnormally or being damaged by the foreign matter.

  Moreover, as other embodiment, the 1st rail 50 shown in FIG. 8 can be mentioned as a modification of the 2nd rail 50 of the said Embodiment 1. FIG. In the second rail 50 shown in FIG. 8, the long hole 53 for screwing the drive rack gear 81 is different between the long hole 53 provided on the closing direction side and the long hole 53 provided on the opening direction side. It has become a length. Specifically, the longer hole 53 provided on the closing direction side is longer in the direction intersecting (orthogonal) with respect to the opening / closing direction.

  As described above, when the drawer 20 is pulled out with respect to the storage chamber R1, the door plate 21 side is inclined downward by the weight of the drawer 20, so that the second rail 50 is lowered with respect to the first rail 40. The drive rack gear 81 installed on the second rail 50 approaches the drive gear 72 side. Since this tendency becomes more prominent as the drawer 20 is pulled out from the storage chamber R1, by adopting the above configuration, the movable range of the driving rack gear 81 when the drawer 20 is largely pulled out can be secured, and the driving While the load on the gear 72 can be reduced, the movable range of the driving rack gear when the drawer 20 is pulled out can be kept small, and the engagement between the driving rack gear 81 and the driving gear 72 can be maintained.

  As another embodiment, the drive gear 72 is installed so as to be movable toward and away from the drive rack gear 81 with respect to the box 71, and the drive mechanism 70 moves the drive gear 72 to the drive rack gear. Further, an elastic body biasing 81 may be provided. In this case, the hole through which the rotation shaft of the driving gear 72 in the box 71 is passed is a long hole extending upward, and the rotation shaft can be moved with respect to the long hole. An elastic body may be used. Further, the entire gear system including the motor installed inside the box 71 is biased upward by the elastic body, and the driving gear 72 is driven through the rotating shaft of the driving gear 72 extending from the gear system. The structure may be such that the rack gear 81 is biased.

  Further, as shown in FIG. 6, the slide rail 60 of the first embodiment employs a structure in which members 61, 62, and 63 formed by bending a long plate material into a substantially U-shaped cross section are combined. Yes. The side portions 61 a, 62 a, 63 a extending in the longitudinal direction of the members 61, 62, 63 are arranged such that the side portion 63 a of the intermediate member 63 is arranged outside the side portion 62 a of the inner member 62. The side part 61a of the outer member 61 is arranged outside the 63a. Then, the balls 64 are interposed between the side portion 62a of the inner member 62 and the side portion 63a of the intermediate member 63, and between the side portion 63a of the intermediate member 63 and the side portion 61a of the outer member 61, and slide with each other. It is configured to be possible. The slide rail 60 may have the form shown in FIG.

  Specifically, the outer member 61 and the inner member 62 are formed by being bent into a substantially U-shaped cross section as in the first embodiment, and the intermediate member 63 is formed by being bent into a substantially W-shaped cross section. You may use what was used and the thing of the structure which combined these. In this case, the side portions 61 a, 62 a, 63 a extending in the longitudinal direction of the members 61, 62, 63 are side portions 63 a that are bent in a substantially V-shaped cross section of the intermediate member 63 outside the side portion 62 a of the inner member 62. Is arranged, and the side portion 61a of the outer member 61 is arranged in the groove of the side portion 63a of the intermediate member 63. The balls 64 are interposed between the side 62a of the inner member 62 and the inner side 63a of the intermediate member 63 and between the outer side 63a of the intermediate member 63 and the side 61a of the outer member 61. And slidable with each other.

  In addition, a stopper 65 may be installed on the slide rail 60 to prevent the members 61, 62, and 63 from falling off from each other. In this case, for example, a stopper 65 that is hooked in a state where both members 62 and 63 are slid so as to extend to each other may be installed on the opposing surfaces at the ends of the inner member 62 and the intermediate member 63. Moreover, what is necessary is just to install in the opposing surface in the edge part of the outer member 61 and the intermediate member 63 the stopper 65 which hooks in the state which both the members 62 and 63 were slid so that it might mutually extend. In this case, a stopper 65 that protrudes toward the other member is provided on the opposite surface of one member, and a guide groove 66 into which the stopper is fitted is provided in the other member. May be configured to slide along the guide groove 66. Thereby, rattling of each member can be suppressed.

  In the first embodiment, the first rail 40 and the second rail 50 are connected via a three-member slide rail so that the drawer 20 can be pulled out in two stages with respect to the storage chamber R1. The slide rail may be used for pulling out in one step, or the other slide rail may be used for pulling out in three steps or more.

  The slide rail 60 may be a roller type. In this case, as shown in FIG. 10, the slide rail 60 includes a guide rail 65 installed on the first rail 40, a roller 66 installed rotatably on the second rail 50, and rolling along the guide rail 65, It has. The guide rail 65 is a member that does not slide with respect to the first rail 40 and constitutes the first rail 40 of claim 1, and the roller 66 is a member that does not slide with respect to the second rail 50. The second rail 50 of Item 2 is configured. The second rail 50 is formed in an L shape by bending a long plate material along the longitudinal direction, and is a mounting rail for installing the drive rack gear 81 on the surface facing the first rail 40. 67 is installed. The drive gear 72 of the drive mechanism 70 is configured to move in the contact / separation direction with respect to the drive rack gear 81 installed on the mounting rail 67. In this case, the roller 66 corresponds to the rolling mechanism 60a in the claims.

  In the first embodiment, the movement adjustment gear 93 of the movement adjustment mechanism 90 is installed on the drawer 20 side, specifically, on the second rail 50 side, and the movement adjustment rack gear 91 is installed on the refrigerator body 10 side, specifically Although it is installed on the first rail side, the movement adjustment gear 93 is installed on the refrigerator body 10 side, and the movement adjustment rack gear 91 is installed on the drawer 20 side so that the positional relationship is reversed. May be. In this case, the both movement adjustment gears 93 may be connected to the shafts 92 as the respective rotation shafts so as to be rotatable with respect to the refrigerator main body 10, and the both movement adjustment rack gears 91 are drawn out. What is necessary is just to install so that it may move with 20. In addition, the shaft 92 spanned over the both movement adjustment gears 93 can be omitted by increasing the strength of the member on which the both movement adjustment gears 93 are installed.

  In addition, it goes without saying that the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention.

100 Refrigerator R1 Storage chamber 10 Refrigerator body 20 Drawer 30 Slide mechanism 40 First rail 50 Second rail 60 Slide rail 60a Rolling mechanism (ball, roller)
70 Drive mechanism 71 Box 72 Drive gear 80 Power transmission mechanism 81 Drive rack gear 82 Elastic body 90 Movement adjustment mechanism 91 Movement adjustment rack gear 92 Shaft 93 Movement adjustment gear

Claims (16)

A refrigerator comprising a refrigerator body having a storage chamber, a drawer for opening and closing the storage chamber, and a slide mechanism for sliding the drawer in an opening and closing direction with respect to the storage chamber,
The slide mechanism is
A first rail attached to the refrigerator body;
A second rail provided on the drawer and sliding relative to the first rail;
A refrigerator comprising: a drive mechanism provided on the first rail and configured to slide the second rail with respect to the first rail. The refrigerator according to claim 1, wherein the slide mechanism further includes a power transmission mechanism that transmits power of the drive mechanism to the second rail. The drive mechanism is
A box provided on the first rail;
A motor housed in the box;
The refrigerator according to claim 2, further comprising a drive gear that is installed on an outer surface of the box and is driven by power of the motor and transmits the power to the power transmission mechanism. The refrigerator according to claim 3, wherein the driving gear is disposed at an end portion of the first rail in the opening direction. The refrigerator body has a protruding portion that protrudes part of the back wall of the storage chamber toward the opening direction,
The power transmission mechanism is provided along the second rail, and includes a driving rack gear that meshes with the driving gear;
The refrigerator according to any one of claims 2 to 4, wherein a closing direction side end portion of the driving rack gear is positioned above the protruding portion in a state where the drawer is closed. The drive rack gear is installed so as to be movable toward and away from the drive gear with respect to the second rail,
The refrigerator according to claim 5, wherein the power transmission mechanism further includes an elastic body that urges the driving rack gear to the driving gear. The second rail further includes a restriction mechanism for restricting a moving distance of the driving rack gear in the contact / separation direction with respect to the driving gear,
The refrigerator according to claim 5, wherein the regulating mechanism regulates a moving distance so that the closing direction side can move longer than the opening direction side of the driving rack gear. The drive gear is installed so as to be movable in the contact / separation direction with the drive rack gear,
The refrigerator according to any one of claims 3 to 7, wherein the drive mechanism further includes an elastic body that biases the drive gear toward the drive rack gear. The box includes a recess that houses the driving gear on its outer surface and a cap that closes the recess.
9. The tooth of the driving gear meshing with the driving rack gear protrudes outside the concave portion by closing the concave portion in the state where the driving gear is accommodated with the cap. The refrigerator in any one of. The refrigerator according to claim 9, wherein the box includes a discharge portion for discharging foreign matter in the recess. The power transmission mechanism is a driving rack gear meshing with the driving gear;
The refrigerator according to claim 3, further comprising a movement adjusting gear disposed on a surface opposite to the surface on which the teeth of the driving rack gear are formed. The refrigerator according to claim 11, further comprising a movement adjustment rack gear arranged to mesh with the movement adjustment gear. The movement adjusting rack gear is arranged to face the driving rack gear across the movement adjusting gear;
The refrigerator according to claim 12, wherein the driving rack gear and the movement adjusting rack gear have their tooth tips facing in the same direction. The movement adjustment gear and the movement adjustment rack gear are arranged on both sides of the storage chamber of the refrigerator body,
The movement adjusting gear is rotatably installed with respect to one of the drawer or the refrigerator body,
The refrigerator according to claim 12, wherein the movement adjusting rack gear is installed on the drawer or the other of the refrigerator main body. The refrigerator according to any one of claims 5 to 10, wherein the driving rack gear is set so that a distance between a tooth tip surface and a surface of the box from which the teeth of the driving gear protrude is 5 mm or less. . The refrigerator according to any one of claims 1 to 15, wherein the slide mechanism further includes a rolling mechanism interposed between the first rail and the second rail.