WO2017217019A1 - 扉開閉装置及びそれを備えた冷蔵庫 - Google Patents

扉開閉装置及びそれを備えた冷蔵庫 Download PDF

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Publication number
WO2017217019A1
WO2017217019A1 PCT/JP2017/007290 JP2017007290W WO2017217019A1 WO 2017217019 A1 WO2017217019 A1 WO 2017217019A1 JP 2017007290 W JP2017007290 W JP 2017007290W WO 2017217019 A1 WO2017217019 A1 WO 2017217019A1
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WO
WIPO (PCT)
Prior art keywords
door
slider
opening
inclined surface
closed
Prior art date
Application number
PCT/JP2017/007290
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
篤史 長濃
洋平 森田
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP2018523308A priority Critical patent/JP6745877B2/ja
Priority to CN201780013752.3A priority patent/CN109312976B/zh
Publication of WO2017217019A1 publication Critical patent/WO2017217019A1/ja

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
    • E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
    • E05C19/16—Devices holding the wing by magnetic or electromagnetic attraction
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
    • E05F15/00—Power-operated mechanisms for wings
    • E05F15/60—Power-operated mechanisms for wings using electrical actuators
    • E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
    • E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
    • E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
    • E05F15/619—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using flexible or rigid rack-and-pinion arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers

Definitions

  • the present invention relates to a door opening and closing device that opens and closes a door and a refrigerator including the door opening and closing device.
  • Patent Document 1 A conventional door opening and closing device is disclosed in Patent Document 1.
  • a door is pivotally supported by a vertical pivot shaft at one end portion of a main body having an opening surface on the front surface, and the opening surface is opened and closed by rotating the door.
  • a pin protrudes from the upper surface of the door.
  • the main body is provided with a rotating plate that is rotated by an actuator.
  • the rotating plate is provided with a spiral groove into which a pin is engaged.
  • a spring for biasing the rotating plate is provided, and the direction of the rotating plate biased by the spring is switched between a direction in which the pin is engaged and a direction in which the pin is disengaged at a predetermined rotation position.
  • the rotating plate When the door is closed, the rotating plate is arranged at the engaging position where it engages with the pin. When the actuator is driven, the rotating plate rotates against the spring. The spring urges the rotating plate in the direction in which the pin is disengaged at a predetermined rotation position, and the spring is disposed at the releasing position where the engagement with the pin is released. At this time, the pin is pushed forward by the rear wall of the groove, and the door is opened.
  • the door is manually closed from the opened state, and when the pin approaches or comes into contact with the rotating plate at the release position, the actuator is driven and the rotating plate rotates against the spring.
  • the spring biases the rotating plate in the engaging direction of the pin at a predetermined rotating position, and the rotating plate is arranged at the engaging position. At this time, the pin is pulled backward by the front wall of the groove, and the door is closed.
  • An object of the present invention is to provide a door opening and closing device and a refrigerator that can improve convenience.
  • a door opening / closing device includes a main body having an opening surface, a door pivotally supported on the main body portion by a pivot shaft, and opening and closing the opening surface, and the main body portion and the door.
  • the slider that moves from the retracted position by the drive unit in the opened state of the door moves to the retracted position after the door is driven to close by sliding with the second inclined surface. It is said.
  • the driving unit includes a rotating body that rotates when driven, and the sliding unit is disposed on the rotating body, and the guide unit disposed on the door.
  • the first inclined surface and the second inclined surface are inclined in opposite directions with respect to the normal line of the opening surface, and the slider is used when the door is opened and closed by the drive unit. It moves in the same direction and slides on the guide part.
  • the slider moves in a direction away from the pivot shaft and slides on the guide unit. It is characterized by moving.
  • a magnet for attracting the door to the main body portion is provided, and the sliding is performed at a position where the door is close to the main body portion when the door is closed by the driving portion.
  • the child is separated from the second inclined surface, and the door is closed by the magnet.
  • the plurality of sliders are provided in the rotational body in a rotationally symmetrical manner, and one of the sliders leaves the first inclined surface when the door is opened. Rotating in the same direction as before leaving the door, each slider was rotated by a central angle between adjacent sliders with respect to the retracted position before opening at the retracted position after opening the door. It is characterized by being placed in a position.
  • the door opening and closing apparatus having the above-described configuration, when the door is closed, one of the sliders is rotated in the opposite direction to the direction before leaving the second inclined surface and then the door is opened.
  • the sliders are arranged at the same position with respect to the retracted position before opening at the later retracted position.
  • the pivot shaft is disposed at both ends of the door, and the door can be opened / closed selectively from both ends, and the door has a normal to the opening.
  • a pair of the guide portions are arranged symmetrically, and the slider arranged between the pair of guide portions slides on one of the guide portions to open and close the door from one end, and the other guide The door is opened and closed from the other end by sliding with the part.
  • the main body and the door are arranged symmetrically with respect to the normal line of the opening to engage and disengage the main body and the door.
  • a pair of cam mechanisms to perform, the cam mechanisms on both sides take a symmetric first locking position when the door is closed, and the cam mechanism opens the door from the open side when one of the doors is opened.
  • the second cam position is such that the other cam mechanism is slid to the pivotal shaft side and the door is slidably regulated.
  • the door opening and closing device of the present invention includes a main body having an opening surface, a door pivotally supported on the main body portion by a pivot shaft, and opening and closing the opening surface, and the opening at both ends of the main body and the door.
  • a pair of cam mechanisms which are arranged symmetrically with respect to the normal of the part and engage and disengage the main body and the door, a slider which is arranged on the main body, and at least the method of the opening surface
  • a drive unit that moves the slider in an operation direction perpendicular to the line and the pivot shaft, and a first inclined surface that is inclined with respect to the operation direction to slide and guide the slider.
  • the cam mechanisms on both sides take a symmetric first locking position, and when the one of the doors is opened, the drive portion causes the slider to move away from the other pivot shaft.
  • the door is slid from the open side to the shaft side by both of the cam mechanisms, and the other cam mechanism slides the door in a freely rotatable manner.
  • the second locking position is taken, and the door is opened by sliding between the slider and the first inclined surface.
  • the refrigerator of the present invention includes the door opening / closing device having the above-described configuration, wherein the driving unit is installed on an upper surface of the main body unit, and the pivot shaft is arranged vertically.
  • the slider disposed on one of the main body and the door moves relative to the guide disposed on the other in the normal direction of the opening surface of the main body and the operation direction perpendicular to the pivot shaft of the door.
  • the door is opened, and when the slider slides with the second inclined surface, the door is closed.
  • a door can be opened and closed by the drive of a drive part, the burden at the time of opening a door can be eased, and a half door state can be prevented.
  • the slider does not interfere with the guide portion when the drive portion is stopped and the door is opened and closed, an increase in burden when the door is manually opened and closed can be prevented. Therefore, the convenience of a door opening / closing apparatus and a refrigerator provided with the same can be improved.
  • movement which closes the door of the door opening / closing apparatus of the refrigerator of 1st Embodiment of this invention The top view which shows the door opening / closing apparatus of the refrigerator of 2nd Embodiment of this invention.
  • movement which opens the door of the door opening / closing apparatus of the refrigerator of 2nd Embodiment of this invention The top view explaining the operation
  • movement which closes the door of the door opening / closing apparatus of the refrigerator of 2nd Embodiment of this invention The top view explaining the operation
  • movement which opens the door of the door opening / closing apparatus of the refrigerator of 3rd Embodiment of this invention The top view explaining operation
  • movement which closes the door of the door opening / closing apparatus of the refrigerator of 3rd Embodiment of this invention The top view explaining the operation
  • FIG. 1 is a front view showing the refrigerator of the first embodiment.
  • a refrigerator compartment 3 a freezer compartment 5, and a vegetable compartment 7 are formed in order from the top of the main body 2 made of a heat insulating box.
  • An opening surface 3a (see FIG. 2) on the front surface of the refrigerator compartment 3 is opened and closed by a door 4 pivotally supported on the main body 2 by a vertical pivot shaft 4c.
  • the opening surface on the front surface of the freezer compartment 5 is opened and closed by a sliding door 6.
  • the front opening of the vegetable compartment 7 is opened and closed by a sliding door 8.
  • a packing (not shown) for preventing cold air leakage is provided on the periphery of each door 4, 6, 8 facing the main body 2.
  • the packing is provided with a magnet (not shown) that is attracted to the front surface of the main body 2.
  • FIG. 2 shows a top view of the refrigerator 1.
  • a support member 51 extending above the door 4 is attached to the upper surface of the main body 2, and the door opening / closing device 50 is installed on the support member 51.
  • the door opening / closing device 50 includes a slider 59, a drive unit 58 that drives the slider 59, and a guide unit 60 that slides and guides the slider 59.
  • the door opening / closing device 50 is provided with a detection sensor (not shown) for detecting the opening amount of the door 4.
  • the drive unit 58 includes a motor 52, a worm 53, a worm wheel 54, a reduction gear 55, a reduction gear 56, and a rack 57.
  • the worm 53 is attached to the shaft of the motor 52 and meshes with the worm wheel 54.
  • the reduction gear 55 is attached concentrically with the worm wheel 54.
  • the reduction gear 56 meshes with the reduction gear 55 and the rack 57.
  • the rack 57 is slidably mounted on the support member 51 in the left-right direction.
  • the guide part 60 is provided on the upper surface of the door 4 and has a rib 61 and a rib 62 protruding upward.
  • the rib 61 has an inclined surface 61a (first inclined surface) that inclines so as to approach the main body 2 as it moves away from the pivot shaft 4c.
  • the rib 62 is disposed between the rib 61 and the pivot shaft 4c, and has an inclined surface 62a (second inclined surface) that is inclined so as to approach the main body 2 as the distance from the pivot shaft 4c increases.
  • the slider 59 protrudes from the lower surface of the rack 57 and is disposed between the inclined surface 61a and the inclined surface 62a. Thus, when the motor 52 is driven, the slider 59 moves in the left-right direction via each gear, and slides on the inclined surface 61a and the inclined surface 62a.
  • the direction normal to the opening surface 3a and the direction perpendicular to the pivot shaft 4c (operation direction) is referred to as the X direction
  • the normal direction of the opening surface 3a is referred to as the Y direction
  • the axial direction of the pivot shaft 4c is referred to as the Z direction.
  • the X direction is the left-right direction
  • the Y direction is the front-rear direction
  • the Z direction is the up-down direction.
  • the slider 59 In the closed state of the door 4, the slider 59 is disposed at a retracted position between the rib 61 and the rib 62. For this reason, the sliding element 59 in the retracted position can manually open the door 4 without interfering with the guide portion 60 during the drive standby when the motor 52 is stopped.
  • the drive unit 58 drives the door 4 to open.
  • the reduction gear 56 rotates clockwise CW in the drawing, and the slider 59 moves in the direction away from the pivot shaft 4c in the X direction (leftward in the drawing). 61 abuts on the inclined surface 61a.
  • the door 4 is opened by sliding between the slider 59 and the inclined surface 61a.
  • the motor 52 When the detection sensor detects that the slider 59 has left the inclined surface 61a, the motor 52 is driven in reverse as shown in FIG. 5, and the reduction gear 56 rotates counterclockwise CCW in the drawing. As a result, the slider 59 moves in a direction (rightward in the drawing) approaching the pivot shaft 4c in the X direction and is placed at the retracted position, and the motor 52 is stopped.
  • the door 4 is driven to close by the drive unit 58 after a predetermined delay time has elapsed.
  • the reduction gear 56 rotates counterclockwise CCW in the drawing, and the slider 59 at the retracted position approaches the pivot shaft 4c in the X direction (rightward in the drawing). It moves and contacts the inclined surface 62a of the rib 62.
  • the slider 59 further moves to the right in the drawing, the door 4 is closed by sliding between the slider 59 and the inclined surface 62a.
  • the door closing drive is terminated. Thereafter, the motor 52 is reversed. Then, the slider 59 moves in the direction away from the pivot shaft 4c in the X direction (leftward in the figure) and is disposed at the retracted position as shown in FIG. 2, and the motor 52 is stopped. Thereby, the half door state of the door 4 can be prevented.
  • the delay time may be omitted.
  • the motor 52 when the detection sensor detects that the door 4 has been closed to a predetermined position, the door 4 is immediately driven to close, but when the detection sensor detects that the door 4 has been closed, the motor 52 is turned on. The motor 52 may be stopped after the slider 59 is reversed and the slider 59 is disposed at the retracted position.
  • the slider 59 disposed on the main body 2 moves in the X direction (operation direction) with respect to the guide 60 disposed on the door 4.
  • the slider 59 arranged at the retracted position slides with the inclined surface 61a (first inclined surface) when the movement stops, the door 4 is opened, and when the slider 59 slides with the inclined surface 62a (second inclined surface), the door 4 is closed. It is done.
  • the door 4 can be opened and closed by the drive of the drive unit 58, and the load when the door 4 is opened can be reduced and the half-door state can be prevented. Further, since the slider 59 does not interfere with the guide portion 60 when the door 4 is manually opened and closed, an increase in the burden when the door 4 is manually opened and closed can be prevented. Therefore, the convenience of the door opening / closing device 50 and the refrigerator 1 including the door opening / closing device 50 can be improved.
  • the slider 59 is disposed at the same retraction position in the opened state and the closed state of the door 4, even when the door 4 is manually opened or closed, the door 4 is driven to be closed or closed. There is no need to move the slider 59 in order to drive the door. For this reason, the door 4 can be opened / closed immediately from the drive standby state.
  • the drive unit 58 has a slide member (rack 57) that slides when driven, and the slider 59 is provided on the rack 57 disposed in the main body unit 2, the slider moves in the X direction (operation direction). 59 can be easily realized.
  • the rib 61 may be disposed between the rib 62 and the pivot shaft 4c, and the inclined surface 61a and the inclined surface 62a may be inclined so as to approach the main body 2 as the pivot shaft 4c is approached.
  • the slider 59 moves in a direction approaching the pivot shaft 4c in the X direction to open the door 4, and moves in a direction away from the pivot shaft 4c to close the door 4.
  • the slider 59 may be provided on the upper surface of the door 4, and the guide portion 60 having the inclined surfaces 61 a and 62 a and slidingly guiding the slider 59 may be provided on the rack 57.
  • FIG. 8 has shown the top view of the refrigerator 1 of 2nd Embodiment.
  • the same reference numerals are given to the same parts as those of the first embodiment shown in FIGS.
  • the slider 59 rotates and the structure of the guide part 60 is different.
  • Other parts are the same as those in the first embodiment.
  • the drive unit 58 of the door opening / closing device 50 has the same motor 52, worm 53, worm wheel 54, reduction gear 55, and reduction gear 56 as in the first embodiment.
  • a plurality of sliders 59a, 59b, and 59c are arranged on the lower surface of the reduction gear 56 (rotating body) in rotational symmetry (three-fold symmetry in this embodiment).
  • the central angle ⁇ of the adjacent sliders 59 is set so that the plurality of sliders 59 do not interfere with the ribs 63 and 64 provided on the upper surface of the door 4 at the same time.
  • the central angle ⁇ of the adjacent slider 59 is 120 °.
  • the plurality of sliders 59a, 59b, and 59c may be collectively referred to as the slider 59.
  • the guide part 60 is provided on the upper surface of the door 4 and has a rib 63 and a rib 64 protruding upward.
  • the rib 63 and the rib 64 have an inclined surface 63a (first inclined surface) and an inclined surface 64a (second inclined surface), respectively.
  • the inclined surface 63a is inclined so as to approach the main body 2 as the distance from the pivot shaft 4c increases.
  • the rib 64 is disposed between the rib 63 and the pivot shaft 4c, and the inclined surface 64a is inclined so as to approach the main body portion 2 as the pivot shaft 4c is approached. That is, the inclined surface 63a and the inclined surface 64a are inclined in the opposite direction with respect to the normal line of the opening surface 3a and are arranged in a substantially V shape.
  • the slider 59 is disposed at a retracted position where it does not interfere with the guide portion 60 even if the door 4 is manually opened and closed. That is, in the retracted position, the slider 59a is disposed between the rib 64 and the pivot shaft 4c, and is disposed closer to the pivot shaft 4c than the locus caused by the rotation of the inclined surface 64a associated with the opening and closing of the door 4. Further, the slider 59b and the slider 59c are arranged above the main body 2 at the retracted position. Since the sliders 59a, 59b, 59c are arranged rotationally symmetrically, a plurality of retracted positions of the slider 59 are formed with a period of the central angle ⁇ .
  • the drive unit 58 drives the door 4 to open.
  • the reduction gear 56 rotates clockwise CW in the drawing
  • the slider 59a moves away from the pivot shaft 4c in the X direction with movement in the Y direction (left in the drawing).
  • the slider 59 a comes into contact with the inclined surface 63 a of the rib 63.
  • the door 4 is opened by sliding between the slider 59a and the inclined surface 63a.
  • each slider 59 is arranged at a position rotated by a central angle ⁇ with respect to the retracted position before the door 4 is opened. That is, the slider 59b is arranged at the position of the slider 59a before the door 4 is opened.
  • the reduction gear 56 is reversed to place the slider 59 in the retracted position, and the slider 59a is arranged in the same position as before the door 4 is opened. Also good. In this case, one slider 59 provided on the reduction gear 56 may be provided.
  • one slider 59 provided on the reduction gear 56 is provided even when the slider 59 maintains the rotation in the same direction as before leaving the inclined surface 63a. It may be. However, by providing a plurality of sliders 59, the sliders 59 can be quickly placed in the retracted position by rotating in the same direction as before the sliders 59 leave the inclined surface 63a and then leave.
  • the door 4 is driven to close by the drive unit 58 after a predetermined delay time has elapsed.
  • the reduction gear 56 rotates clockwise CW in the drawing, and the slider 59b at the retracted position moves away from the pivot shaft 4c in the X direction with movement in the Y direction (FIG. 12).
  • the slider 59b contacts the inclined surface 64a of the rib 64.
  • the door 4 is closed by sliding between the slider 59b and the inclined surface 64a.
  • the slider 59b leaves the inclined surface 64a at a position where the door 4 is close to the main body 2, the rib 64 is retracted from the rotation locus of the slider 59b when the door 4 is closed. Thereby, when opening the door 4 next, interference with the slider 59 and the rib 64 which rotate in the same direction can be prevented.
  • the delay time may be omitted.
  • the door 4 can be closed while preventing the slider 59 and the guide portion 60 from interfering with each other.
  • one or both of the rib 63 and the rib 64 may be arranged at a symmetrical position with respect to the center line CL (see FIG. 8) of the reduction gear 56 in the Y direction.
  • the door 4 can be opened and closed by rotating and sliding the slider 59 with respect to the rib 63 or the rib 64 on the right side in the drawing of the center line CL.
  • the slider 59 moves and slides in the direction approaching the pivot shaft 4c in the X direction with respect to the rib 63 or the rib 64 on the right side.
  • a large torque is required to open and close the door 4 at a position close to the pivot shaft 4c, and the motor 52 becomes large.
  • the slider 52 moves in a direction away from the pivot shaft 4c in the X direction and slides on the rib 63 and the rib 64 as in this embodiment because the motor 52 can be downsized.
  • one slider 59 arranged in the main body 2 moves at least in the X direction (operation direction) with respect to the guide unit 60 arranged in the door 4.
  • the slider 59 disposed at the retracted position slides with the inclined surface 63a (first inclined surface) when the movement stops, the door 4 is opened, and when the slider 59 slides with the inclined surface 64a (second inclined surface), the door 4 is closed. It is done.
  • the door 4 can be opened and closed by the drive of the drive unit 58, and the load when the door 4 is opened can be reduced and the half-door state can be prevented. Further, since the slider 59 does not interfere with the guide portion 60 when the door 4 is manually opened and closed, an increase in the burden when the door 4 is manually opened and closed can be prevented. Therefore, the convenience of the door opening / closing device 50 and the refrigerator 1 including the door opening / closing device 50 can be improved.
  • the slider 59 is disposed at the same retraction position in the opened state and the closed state of the door 4, even when the door 4 is manually opened or closed, the door 4 is driven to be closed or closed. There is no need to move the slider 59 in order to drive the door. For this reason, the drive standby state of the door 4 can be immediately set.
  • the drive part 58 has the reduction gear 56 (rotary body) which rotates at the time of a drive, and the slider 59 was provided in the reduction gear 56 distribute
  • the slider 59 can be easily realized.
  • the inclined surface 63a and the inclined surface 64a are inclined in the opposite direction with respect to the Y direction, and when the door 4 is opened and closed, the reduction gear 56 rotates in the same direction and the slider 59a moves in the same direction. To do. Thereby, the number of forward and reverse rotations of the motor 52 can be reduced, and the durability of the drive unit 58 can be improved.
  • the slider 59a moves in a direction away from the pivot shaft 4c and slides on the inclined surface 63a, and when the door 4 is closed, the slider 59b moves away from the pivot shaft 4c. To slide on the inclined surface 64a. Thereby, the torque which opens and closes the door 4 can be made small, and size reduction of the motor 52 can be achieved.
  • the slider 59 is separated from the inclined surface 64a at a position where the door 4 is close to the main body 2, and the door 4 is closed by the magnet.
  • a plurality of sliders 59a, 59b, 59c are provided in rotational symmetry, and when the door 4 is opened, the one slider 59a rotates in the same direction as before leaving the inclined surface 63a and then retracted. Arranged. Thereby, when the rotation angle until it leaves
  • the one slider 59b rotates in the opposite direction to that before it leaves after leaving the inclined surface 64a, and is arranged at the retracted position. Thereby, the interference between the slider 59 and the rib 63 when the slider 59b moves to the retracted position after leaving the inclined surface 64a can be prevented.
  • one slider 59 is provided on the upper surface of the door 4, and a guide portion 60 having inclined surfaces 63 a and 64 a for slidingly guiding the slider 59 on the reduction gear 56 (rotating body) is provided. Also good.
  • FIG. 14 shows a top view of the refrigerator 1 of the third embodiment.
  • the same reference numerals are given to the same parts as those in the second embodiment shown in FIGS.
  • a pair of left and right guide portions 60 are provided, and the door 4 can be alternatively opened from the left and right by the pair of left and right cam mechanisms 12.
  • Other parts are the same as those of the second embodiment.
  • the door 4 of the refrigerator compartment 3 has handles 4a and 4b at the left and right ends, and can be opened and closed alternatively from the left and right directions by being pivotally supported by the pivot shaft 4c or the pivot shaft 4d.
  • FIG. 15 is a perspective view showing a state where the upper door 4 of the refrigerator 1 is opened.
  • a pair of support members 10 are arranged at both left and right ends, and below the support members 11 extending in the left-right direction.
  • a pair of cam mechanisms 12 arranged symmetrically with respect to the center line of the door 4 are provided at the left and right ends of the upper surface of each support member 10 and the door 4.
  • a pair of similar cam mechanisms 12 are provided at both the left and right ends of the support member 11 and the left and right ends of the lower surface of the door 4.
  • the door 4 and the main body 2 are engaged and disengaged by a pair of left and right cam mechanisms 12 provided on the upper and lower sides of the door 4 to form a double door 4.
  • FIG. 16 is a top view showing the cam mechanism 12 above the door 4 and shows a state in which the door 4 is closed.
  • FIG. 17 is a cross-sectional view taken along the line AA in FIG.
  • the cam mechanisms 12 arranged at the left and right end portions include a hinge pin 21 provided on the support member 10, a rib 24, a first engagement projection 25 (respectively indicated by hatching in the drawing), and a groove cam 31 provided on the door 4.
  • a boss 34 and a second engagement protrusion 35 are provided.
  • the hinge pin 21 is made of metal insert-molded on the support member 10 and forms a pivot shaft 4c and a pivot shaft 4d (see FIG. 14) of the door 4.
  • the ribs 24 are formed in an arch shape by resin molding, and are arranged around the hinge pins 21.
  • a guide surface 24 a made of a cylindrical surface concentric with the hinge pin 21 is formed on the inner surface of the rib 24.
  • the guide surface 24a of the rib 24 may be formed by a large number of pins and protrusions, and the envelope surface may be formed as an arc concentric with the hinge pin 21. In other words, the guide surface 24a only needs to be formed along an arc concentric with the hinge pin 21.
  • the first engagement protrusion 25 is disposed between the left and right hinge pins 21.
  • the first engaging protrusion 25 is provided with a cylindrical surface 25a concentric with the nearer hinge pin 21 and a cylindrical surface 25b concentric with the farther hinge pin 21 facing each other.
  • the groove cam 31, the boss 34, and the second engagement projection 35 are formed by a cam member 30 that is integrally molded with resin, and the cam member 30 is attached to the upper surface of the door 4.
  • the groove cam 31 has a first groove portion 32 and a second groove portion 33 which are engaged with the hinge pin 21 and are continuous.
  • the first groove portion 32 is formed to be inclined so that the main body portion 2 side is opened and the open end faces inward in a plane perpendicular to the pivot shafts 4c and 4d.
  • the second groove portion 33 continues to the end opposite to the open end of the first groove portion 32, bends outward from the first groove portion 32, and extends in a direction away from the open end of the first groove portion 32.
  • the boss 34 has a cylindrical surface 34 a in which the second groove 33 is recessed and slides on the guide surface 24 a of the rib 24. Further, an escape portion 34b (see FIG. 20) is provided on the peripheral surface of the boss 34 to avoid interference with the rib 24 at a first locking position described later.
  • the peripheral surface of the boss 34 may be formed by a large number of pins and protrusions. That is, you may form so that the enveloping surface of many pins and protrusions which form the peripheral surface of the boss
  • hub 34 may become a cylindrical surface.
  • the second engagement protrusion 35 has sliding surfaces 35a and 35b that slide with the cylindrical surfaces 25a and 25b of the first engagement protrusion 25, respectively.
  • a relief groove 36 that avoids interference with the first engagement protrusion 25 is recessed in the cam member 30 around the second engagement protrusion 35.
  • FIG. 18 shows a top view of the refrigerator 1.
  • the door opening / closing device 50 has a motor 52, a worm 53, a worm wheel 54, a reduction gear 55, and a reduction gear 56, as in the second embodiment.
  • a plurality of sliders 59a, 59b, 59c are arranged on the lower surface of the reduction gear 56 in a rotationally symmetrical manner.
  • a pair of guide portions 60 are provided symmetrically with respect to the center line CL in the Y direction of the reduction gear 56.
  • the reduction gear 56 rotates clockwise CW in the drawing by driving the driving portion 58
  • the slider 59 slides on the left guide portion 60 in the drawing.
  • the door 4 is pivotally supported by the right pivot shaft 4c.
  • the reduction gear 56 rotates counterclockwise CCW in the drawing by driving the driving portion 58
  • the slider 59 slides on the right guide portion 60 in the drawing.
  • the door 4 is pivotally supported by the left pivotal support shaft 4d.
  • the hinge pin 21 Since the first groove portion 32 is inclined with respect to the front-rear direction in a plane perpendicular to the pivot shaft 4d, the hinge pin 21 is not detached from the open ends of the left and right first groove portions 32. Therefore, the door 4 can be prevented from falling off.
  • an operation button for opening the door 4 from the right side and an operation button for opening the door 4 from the left side are provided. Note that the operation buttons may not be independent as long as the user can clearly indicate the opening direction of the door 4.
  • the drive unit 58 drives the door 4 to open from the right side. That is, as shown in FIG. 19, the reduction gear 56 rotates counterclockwise CCW in the drawing, and the slider 59a moves away from the pivot shaft 4d in the X direction with movement in the Y direction (right in the drawing). Move to As a result, the slider 59 a comes into contact with the inclined surface 63 a of the rib 63. Further, when the slider 59a rotates counterclockwise CCW in the drawing, the door 4 is opened from the right side by sliding between the slider 59a and the inclined surface 63a.
  • the right hinge pin 21 is relatively moved toward the open end of the first groove 32 by the engagement guide of the first groove 32.
  • the first groove portion 32 has an open end inclined toward the inside of the door 4, and the second groove portion 33 extends outward from a connecting portion with the first groove portion 32.
  • the left hinge pin 21 is relatively moved outward in the second groove 33 in a direction away from the first groove 32. To do. As a result, the door 4 slides from the left pivot shaft 4d side to the right open side while rotating. At this time, the slider 59a moves away from the pivot shaft 4d in the X direction and presses the inclined surface 63a of the right guide portion 60, so that the door 4 can be easily slid.
  • the left hinge pin 21 reaches the closed end of the second groove 33, and the cam mechanism 12 is arranged at the second locking position.
  • the cylindrical surface 34 a of the left boss 34 starts sliding with the guide surface 24 a of the rib 24. Accordingly, the movement of the door 4 in the substantially front-rear direction is restricted by the engagement of the hinge pin 21 and the second groove portion 33, and the movement of the door 4 in the substantially left-right direction is restricted by the engagement of the boss 34 and the rib 24.
  • the cam mechanism 12 slides the door 4 at the second locking position and supports it freely.
  • the cylindrical surface 25b of the first engagement protrusion 25 on the right side and the sliding surface 35b of the second engagement protrusion 35 slide, and the cylindrical surface 25a of the first engagement protrusion 25 on the left side and the second engagement protrusion 25
  • the sliding surface 35a of 35 slides.
  • each slider 59 is arranged at a position rotated by a central angle ⁇ (see FIG. 8) with respect to the retracted position before the door 4 is opened.
  • the reduction gear 56 is reversed to place the slider 59 in the retracted position, and the slider 59a is arranged in the same position as before the door 4 is opened. Also good.
  • the left and right cam mechanisms 12 perform the reverse operation.
  • the detection sensor detects that the door 4 has been manually closed from the opened state to the predetermined position
  • the door 4 is driven to close by the drive unit 58 after a predetermined delay time has elapsed.
  • the reduction gear 56 rotates counterclockwise CCW in the drawing, and the slider 59c in the retracted position is moved in the Y direction, and the slider 59 is pivoted in the X direction. Move in a direction away from 4d (to the right in the figure).
  • the slider 59 c comes into contact with the inclined surface 64 a of the rib 64.
  • the door 4 is closed by sliding between the slider 59c and the inclined surface 62a.
  • the door 4 when the door 4 is suddenly closed manually, a delay time is provided so that the motor 52 is not driven and the door 4 is closed. At this time, since the slider 59 is disposed at the retracted position, the door 4 can be closed while preventing the interference between the slider 59 and the guide portion 60. As described in the first and second embodiments, the delay time may be omitted. In this case, the door 4 can be closed while preventing the slider 59 and the guide portion 60 from interfering with each other.
  • a pair of guide portions 60 are arranged symmetrically with respect to the normal line of the opening surface 3 a on the door 4. Slide 60. For this reason, the door 4 can be opened and closed by the one drive part 58, the structure of the door opening / closing apparatus 50 can be simplified and the increase in cost can be suppressed.
  • the cam mechanisms 12 on both sides take a symmetric first locking position.
  • the cam mechanism 12 slides the door 4 from the open side to the pivot shaft 4d side, and the left cam mechanism 12 slides the door 4 so that the door 4 can rotate freely.
  • the second locking position is taken. Thereby, the door 4 which can be selectively opened / closed from both ends can be easily realized.
  • the slider 59 moves in a direction away from the other (left side) pivot shaft 4d and slides on the inclined surface 63a (first inclined surface). To start. Then, the cam mechanism 12 slides the door 4 from the open side to the pivot shaft 4d side to take the second locking position, and the door 4 is opened. Therefore, the direction in which the slider 59 presses the inclined surface 63 a coincides with the sliding direction of the door 4 by the cam mechanism 12, and the door 4 can be smoothly opened by the door opening / closing device 50.
  • the hinge pin 21 and the rib 24 may be provided on the door 4, and the groove cam 31 and the boss 34 may be provided on the main body 2.
  • the first engagement protrusion 25 may be provided on the door 4 and the second engagement protrusion 35 may be provided on the main body 2.
  • the present invention can be used for equipment such as a refrigerator provided with a door opening / closing device for opening and closing the door.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Electromagnetism (AREA)
  • Refrigerator Housings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
PCT/JP2017/007290 2016-06-15 2017-02-27 扉開閉装置及びそれを備えた冷蔵庫 WO2017217019A1 (ja)

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CN201780013752.3A CN109312976B (zh) 2016-06-15 2017-02-27 门开闭装置及具有门开闭装置的冰箱

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WO2019021506A1 (ja) * 2017-07-26 2019-01-31 シャープ株式会社 扉開閉機構
TWI662242B (zh) * 2017-12-29 2019-06-11 日商夏普股份有限公司 門的開裝置、門的開閉裝置及冰箱
JP2019211198A (ja) * 2018-06-08 2019-12-12 シャープ株式会社 扉開閉機構および冷蔵庫
JP2020008213A (ja) * 2018-07-06 2020-01-16 シャープ株式会社 扉駆動装置および冷蔵庫
JP2020133919A (ja) * 2019-02-13 2020-08-31 シャープ株式会社 扉の取っ手構造および冷蔵庫
TWI838376B (zh) 2018-06-08 2024-04-11 日商夏普股份有限公司 門開關機構、收納櫃、以及把手構造

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CN110051147B (zh) * 2019-04-23 2020-09-25 深圳市万德昌科技有限公司 一种便于云端管理的人脸识别储物柜

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JP2005326044A (ja) * 2004-05-12 2005-11-24 Hitachi Home & Life Solutions Inc 冷蔵庫の扉開閉装置または扉閉鎖装置
JP2006329553A (ja) * 2005-05-27 2006-12-07 Matsushita Electric Ind Co Ltd 冷蔵庫
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WO2019021506A1 (ja) * 2017-07-26 2019-01-31 シャープ株式会社 扉開閉機構
JPWO2019021506A1 (ja) * 2017-07-26 2020-06-11 シャープ株式会社 扉開閉機構
TWI662242B (zh) * 2017-12-29 2019-06-11 日商夏普股份有限公司 門的開裝置、門的開閉裝置及冰箱
WO2019130604A1 (ja) * 2017-12-29 2019-07-04 シャープ株式会社 扉の開装置、扉の開閉装置および冷蔵庫
JPWO2019130604A1 (ja) * 2017-12-29 2021-01-14 シャープ株式会社 扉の開装置、扉の開閉装置および冷蔵庫
JP2019211198A (ja) * 2018-06-08 2019-12-12 シャープ株式会社 扉開閉機構および冷蔵庫
JP7122165B2 (ja) 2018-06-08 2022-08-19 シャープ株式会社 扉開閉機構および冷蔵庫
TWI838376B (zh) 2018-06-08 2024-04-11 日商夏普股份有限公司 門開關機構、收納櫃、以及把手構造
JP2020008213A (ja) * 2018-07-06 2020-01-16 シャープ株式会社 扉駆動装置および冷蔵庫
JP7043359B2 (ja) 2018-07-06 2022-03-29 シャープ株式会社 扉駆動装置および冷蔵庫
JP2020133919A (ja) * 2019-02-13 2020-08-31 シャープ株式会社 扉の取っ手構造および冷蔵庫
JP7324587B2 (ja) 2019-02-13 2023-08-10 シャープ株式会社 扉の取っ手構造および冷蔵庫

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JPWO2017217019A1 (ja) 2019-04-04

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