WO2019021506A1 - 扉開閉機構 - Google Patents

扉開閉機構 Download PDF

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Publication number
WO2019021506A1
WO2019021506A1 PCT/JP2017/047309 JP2017047309W WO2019021506A1 WO 2019021506 A1 WO2019021506 A1 WO 2019021506A1 JP 2017047309 W JP2017047309 W JP 2017047309W WO 2019021506 A1 WO2019021506 A1 WO 2019021506A1
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WO
WIPO (PCT)
Prior art keywords
door
closing
self
opening
slider
Prior art date
Application number
PCT/JP2017/047309
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
篤史 長濃
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 CN201780092764.XA priority Critical patent/CN110892218B/zh
Priority to JP2019532356A priority patent/JP6909296B2/ja
Publication of WO2019021506A1 publication Critical patent/WO2019021506A1/ja

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    • 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
    • E05F1/00—Closers or openers for wings, not otherwise provided for in this subclass
    • E05F1/02—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights
    • E05F1/04—Closers or openers for wings, not otherwise provided for in this subclass gravity-actuated, e.g. by use of counterweights for wings which lift during movement, operated by their own weight
    • E05F1/06—Mechanisms in the shape of hinges or pivots, operated by the weight of the wing
    • 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
    • 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 mechanism for opening and closing a door.
  • Patent Document 1 A conventional door opening and closing mechanism is disclosed in Patent Document 1.
  • the door is pivotally supported by a pivot shaft vertical to one end of a main body having an opening on the front surface, and the door pivots to open and close the opening.
  • a pair of hinge pins forming a pivot is vertically disposed on upper and lower wall surfaces of the main body.
  • the seat surface of the lower hinge pin is formed with a first inclined surface and a second inclined surface which are circumferentially inclined with respect to the horizontal.
  • the upper and lower surfaces of the door are provided with bearing portions into which the hinge pins are fitted.
  • a downwardly projecting follower is provided on the lower surface of the lower bearing portion.
  • the follower slides on the first inclined surface when the rotation angle from the closed state of the door becomes equal to or less than the first rotation angle, and the second inclined surface when it becomes equal to or more than the second rotation angle. It is positioned to slide on.
  • the follower slides on the first inclined surface and ascends.
  • the door is opened to the second rotation angle and the follower is disposed on the second inclined surface, the door is biased in the direction of opening by its own weight.
  • the follower slides down on the second slope due to the weight of the door and the door is opened.
  • the follower slides on the second inclined surface and ascends.
  • the door is biased in the closing direction by its own weight.
  • the follower slides down the first inclined surface due to the weight of the door and the door is closed. As a result, the door is self-closing and the half-door state can be prevented.
  • the door opening and closing mechanism when the first rotation angle is small, the door may not be in the half-door state when the door is closed without reaching the first inclined surface. On the other hand, when the first rotation angle is large, the door may self-close against the user's intention when the door is opened to the desired position without coming out of the first inclined surface. . Therefore, there is a problem that the door opening and closing mechanism is not convenient.
  • An object of the present invention is to provide a door opening and closing mechanism capable of improving convenience.
  • a door opening and closing mechanism is a door opening and closing mechanism including a main body having an opening and a door for opening and closing the opening from the predetermined first self-closing start position. From the first self-closing start position to the door opening side of the first self-closing start position with respect to the first self-closing mechanism portion that biases the door in the closing direction until the first self-closing end position A second self-closing mechanism section is provided, which biases the door in a closing direction between the first self-closing start position and a second self-closing end position on the door closing side.
  • the biasing of the second self closing mechanism section in the direction to close the door is released.
  • the first opening mechanism portion is biased to open the door on the door opening side from the first opening start position near the second self closing start position. It is characterized by
  • the first opening start position is disposed closer to the door closing side than the second self closing start position, and the biasing force of the first opening mechanism portion is resisted.
  • the door is closed by the second self-closing mechanism.
  • a first inclined surface and a second inclined surface provided on one of the main body and the door and inclined with respect to horizontal, the other of the main body and the door And a follower which slides on the first inclined surface and the second inclined surface by the weight of the door, and the first self-closing mechanism portion is formed by the first inclined surface and the follower
  • the first opening mechanism is formed by the second inclined surface and the follower.
  • the biasing force by the first self closing mechanism portion between the switching position on the door closing side with respect to the second self closing end position and the first self closing end position Is smaller than the biasing force of the first self-closing mechanism between the switching position and the second self-closing end position.
  • the door by the first self closing mechanism section between the switching position on the door closing side with respect to the second self closing end position and the first self closing end position. It is characterized by having a regulation part which regulates the closing speed of.
  • the restricting portion when closing the door, supports the door against the urging force of the first self closing mechanism and closes the door at a predetermined speed. It is characterized by guiding in the direction.
  • the pivot shaft is disposed at both ends of the door to selectively open and close the door from both ends, and the door from the first self closing end position And a second opening mechanism for urging the door in a direction to open the door, and the restriction unit for closing the door from the other by the second opening mechanism for urging the door when one of the doors is opened.
  • a slider provided on the main body and rotated by motor drive, and a pair of first cam surfaces provided on the door and sliding on the slider. And a pair of second cam surfaces,
  • the second self-closing mechanism that closes the door from one side is formed by the slider and one of the first cam surfaces
  • the second opening mechanism that opens one of the doors is the slider and Formed by one of the second cam surfaces
  • the second self-closing mechanism that closes the door from the other is formed by the slider and the other first cam surface
  • the second opening mechanism that opens the other of the door is the slider and Formed by the other second cam surface
  • a retracted position which does not interfere with the first cam surface and the second cam surface when the slider manually opens the door at the first self-closing end position. It is characterized by being distributed.
  • the refrigerator according to the present invention is characterized by including the door opening / closing mechanism of each of the above-mentioned configurations, wherein the drive unit is installed on the upper surface of the main body, and the pivot shaft is vertically disposed.
  • the first self-closing mechanism which biases the door between the first self-closing start position and the first self-closing end position, and the second self-closing mechanism on the door opening side than the first self-closing starting position
  • a second self-closing mechanism unit is provided which biases the door between the start position and a second self-closing end position on the door closing side of the first self-closing start position. Therefore, when the door is closed, the door can be closed in a wide range by biasing the door in order of the second self-closing mechanism and the first self-closing mechanism, and the half-door state can be prevented.
  • the biasing force of the second self-closing mechanism is limited when the door is opened, it is possible to prevent the door from being closed against the user's intention. Therefore, the convenience of the door opening and closing mechanism can be improved.
  • Front view showing a refrigerator according to a first embodiment of the present invention Side surface sectional view showing the principal part of the refrigerator of a first embodiment of the present invention Front view showing an angle of a refrigerator of a first embodiment of the present invention
  • Top view showing the refrigerator according to the first embodiment of the present invention Top view for explaining the opening operation of the door opening and closing apparatus of the refrigerator according to the first embodiment of the present invention
  • the expanded view which shows arrangement
  • Top view for explaining the opening operation of the door opening and closing apparatus of the refrigerator according to the first embodiment of the present invention The expanded view which shows arrangement
  • Top view for explaining the opening operation of the door opening and closing apparatus of the refrigerator according to the first embodiment of the present invention
  • the expanded view which shows the uneven
  • Top view showing a refrigerator according to a third embodiment of the present invention The top view explaining the opening operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention
  • the top view explaining the opening operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention The top view explaining the opening operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention
  • the top view explaining the closing operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention The top view explaining the closing operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention
  • the top view explaining the closing operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention The top view explaining the closing operation of the door opening and closing apparatus of the refrigerator of 3rd Embodiment of this invention
  • Front view showing a refrigerator according to a fourth embodiment of the present invention The perspective view which shows the upper part of the refrigerator of 4th Embodiment
  • FIG. 1 is a front view showing the refrigerator of the first embodiment.
  • the refrigerator 1 has a main body portion 2 formed of a heat insulating box, and in the main body portion 2, a refrigerating room 3, a freezing room 5, and a vegetable room 7 partitioned by a heat insulating wall 9 (see FIG. 2) are formed in order from the upper side.
  • the opening surface 3a (see FIG. 2) of the front of the refrigerator compartment 3 is opened and closed by a door 4 pivotally supported by a pivot 4c perpendicular to the main body 2.
  • the pivot shaft 4c is formed by hinge pins 21 (see FIG. 2) supporting the upper and lower ends of the door 4 respectively.
  • the opening surface of the front of the freezing chamber 5 is opened and closed by a sliding door 6.
  • the opening surface of the front 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 of the main body 2.
  • FIG. 2 is a side sectional view showing the details of the lower part of the refrigerator compartment 3.
  • the door 4 of the refrigerator compartment 3 is supported at its upper and lower ends by hinge pins 21 forming a pivot 4c (see FIG. 1).
  • An angle 11 for holding the hinge pin 21 is attached to the front of the heat insulating wall 9 between the refrigerator compartment 3 and the freezer compartment 5.
  • FIG. 3 shows a front view of the angle 11.
  • the angle 11 is formed by bending a metal plate into an L-shaped cross section, and the vertical portion 11 v is attached to the heat insulating wall 9 by a screw 16.
  • a hinge pin 21 protrudes from one end of the horizontal portion 11 h of the angle 11.
  • An annular asperity portion 22 having a plurality of inclined surfaces is formed on the seat surface of the hinge pin 21.
  • a bearing portion 14 fitted to the hinge pin 21 is attached to the lower surface of the door 4.
  • a follower 14d (see FIG. 5) sliding on the uneven portion 22 is provided on the lower surface of the bearing portion 14 so as to protrude downward.
  • FIG. 4 shows a top view of the uneven portion 22
  • FIG. 5 shows a developed view of the uneven portion 22 and the follower 14d.
  • the concavo-convex portion 22 is formed point-symmetrically and has a pair of inclined surfaces 22a (first inclined surface) which descend clockwise in FIG. 4 and a pair of inclined surfaces 22c (second inclined surfaces) which climb clockwise. doing.
  • a horizontal surface 22d is provided between the upper end of the inclined surface 22a and the upper end of the inclined surface 22c
  • a horizontal surface 22e is provided between the lower end of the inclined surface 22a and the lower end of the inclined surface 22c.
  • the inclined surface 22 a is formed to have an angle of 30 ° around the hinge pin 21.
  • the horizontal plane 22d is formed to have an angle of 40 ° around the hinge pin 21.
  • the inclined surface 22 c is formed to have an angle of 20 ° around the hinge pin 21.
  • the follower 14d provided on the lower end surface of the bearing portion 14 has an inclined surface 14a and an inclined surface 14c in surface contact with the inclined surface 22a and the inclined surface 22c of the uneven portion 22, respectively.
  • the top of the follower 14d slides on the uneven portion 22 and moves up and down.
  • the first self closing mechanism section is a door in a section T1 between the first self closing start position P2 where the follower 14d is disposed at the upper end of the inclined surface 22a and the closing position P0 of the door 4 (first self closing end position) Turn 4 on.
  • FIG. 5 shows a state in which the follower 14d is disposed at the closing position P0.
  • the first opening mechanism is a door at section S1 between the first opening start position P3 where the follower 14d is disposed at the upper end of the inclined surface 22c and the first opening end position P5 disposed at the lower end of the inclined surface 22c. Turn 4 on.
  • a second self-closing mechanism portion that biases the door 4 in the closing direction by driving the motor 52 (see FIG. 6) and a second opening mechanism portion that biases the door 4 in the opening direction are provided.
  • the second self closing mechanism part biases the door 4 in a section T2 between the second self closing start position P4 and the second self closing end position P1.
  • the second self closing end position P1 is disposed closer to the door closing side than the first self closing start position P2.
  • the second self closing start position P4 is disposed closer to the door opening side than the first opening start position P3 in the vicinity of the first opening start position P3.
  • the second opening mechanism urges the door 4 in a section S2 between the closing position P0 and the second opening end position.
  • the second open end position is made to substantially coincide with the second self-closing start position P4, and in the following description, it may be referred to as "second open end position P4 '".
  • a door opening and closing mechanism that opens and closes the door 4 is configured by the first self closing mechanism, the second self closing mechanism, the first opening mechanism, and the second opening mechanism.
  • a groove (not shown) is formed on the seat surface of the hinge pin 21 supporting the upper end of the door 4 and the upper end surface of the door 4 to avoid interference due to the vertical movement of the door 4.
  • the groove portion can prevent the generation of a gap between the main body 2 and the door 4 due to the vertical movement of the door 4.
  • one of the inclined surface 14a and the inclined surface 22a, which slide relative to each other may be formed by a vertical surface.
  • one of the inclined surface 14c and the inclined surface 22c, which mutually slide may be formed by a vertical surface.
  • FIG. 6 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 a door opening and closing device 50 is installed on the support member 51.
  • the door opening and closing device 50 includes a slider 59, a drive unit 58 for driving the slider 59, and a guide unit 60 for slidingly guiding the slider 59. Further, 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 mounted 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 portion 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 a cam surface 61a (second cam surface) which is inclined so as to approach the main body 2 as it is separated from the pivot 4c.
  • the rib 62 is disposed between the rib 61 and the pivot 4c, and has a cam surface 62a (first cam surface) that inclines toward the main body 2 as it is separated from the pivot 4c.
  • the slider 59 protrudes from the lower surface of the rack 57 and is disposed between the cam surface 61 a and the cam surface 62 a. Thus, when the motor 52 is driven, the sliders 59 move in the left-right direction via the gears, and slide on the cam surface 61a and the cam surface 62a.
  • the X direction is the left and right direction
  • the Y direction is the front and back direction
  • the Z direction is the up and down direction.
  • the slider 59 In the closed state of the door 4, the slider 59 is disposed at the retracted position between the rib 61 and the rib 62. Therefore, when the motor 52 is stopped, the slider 59 at the retracted position does not interfere with the guide portion 60 in the drive standby state, and the door 4 can be manually opened.
  • the drive unit 58 drives the door 4 to open.
  • the reduction gear 56 rotates clockwise CW in the figure as shown in FIG. 7, and the slider 59 moves in the direction (left in the figure) away from the pivot 4c in the X direction. It abuts on the cam surface 61 a of the rib 61. Further, when the slider 59 moves to the left in the drawing, the door 4 is biased in the opening direction by the sliding between the slider 59 and the cam surface 61a.
  • the follower 14 d ascends the inclined surface 22 a against the biasing force of the door 4 due to its own weight, and the door 4 is opened while rising. Further, as shown in FIG. 9, the follower 14d slides on the horizontal surface 22d, and the door 4 is opened horizontally.
  • the slider 59 reaches the end (rear end) of the cam surface 61a, and the opening drive by the drive unit 58 is ended.
  • the follower 14d is disposed at the second opening end position P4 '(second self closing start position P4) on the door opening side than the first opening start position P3.
  • the drive portion 58 including the slider 59 and the cam surface 61a constitute a second opening mechanism portion which biases the door 4 in the opening direction in the section S2.
  • the follower 14d slides on the inclined surface 22c, and the door 4 is opened by the first opening mechanism that biases the door 4 by its own weight.
  • the door 4 reaches the first open end position P5, and the follower 14d is disposed on the horizontal surface 22e. Thereafter, the door 4 is manually opened. Thereby, the burden at the time of opening the door 4 can be reduced.
  • the motor 52 is reversely driven to rotate the reduction gear 56 in the counterclockwise direction CCW in the drawing as shown in FIG.
  • the slider 59 moves in a direction (rightward in the figure) approaching the pivot shaft 4c in the X direction and is disposed at the retracted position, and the motor 52 is stopped.
  • the drive unit 58 drives the door 4 to close.
  • 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 cam surface 62 a of the rib 62.
  • the door 4 is closed by the sliding between the slider 59 and the cam surface 62a.
  • the slider 59 reaches the end (front end) of the cam surface 62a, leaves the cam surface 62a, and ends the closing operation by the drive unit 58.
  • the follower 14d is disposed at a second self-closing end position P1 (see FIG. 5) closer to the door closing than the first self-closing start position P2.
  • the drive portion 58 including the slider 59 and the cam surface 62a constitute a second self-closing mechanism portion which biases the door 4 in the closing direction in the section T2.
  • the second self closing start position P4 substantially coincides with the second open end position P4 ', but may be a different position.
  • the follower 14d may be disposed on the inclined surface 22c at the second opening end position P4 ', and the follower 14d may be disposed on the horizontal surface 22d at the second self-closing start position P4.
  • the door 4 Since the follower 14d slides on the inclined surface 22a when closing drive by the drive unit 58 is finished, the door 4 is closed by the first self-closing mechanism that biases the door 4 by its own weight. Thereby, the burden at the time of closing of the door 4 can be reduced, and a half door state can be prevented.
  • the motor 52 is reversed. Then, the slider 59 moves in a direction (leftward in the drawing) away from the pivot shaft 4c in the X direction, and is disposed at the retracted position as shown in FIG. 6 described above, and the motor 52 is stopped.
  • the slider 59 When the door 4 is manually closed to the closing position, the slider 59 is disposed at the retracted position, so that the door 4 can be closed by preventing interference between the slider 59 and the guide portion 60. it can.
  • the door 4 may be driven to close by the drive unit 58 after a predetermined delay time has elapsed. Alternatively, it may be determined by operation of transition information of the detection sensor that the door 4 has been closed to a predetermined position, and the door 4 may be driven to close based on the determination result. Alternatively, the door 4 may be driven to close by the drive unit 58 when the closing speed when the door 4 passes the second self-closing start position P4 is equal to or less than a predetermined speed. By these, it is possible to prevent the motor 52 from being driven despite the case where the door 4 is manually closed to the closing position.
  • the first self-closing mechanism section is provided to bias the door 4 in the section T1 between the first self-closing start position P2 and the closing position P0 (first self-closing end position).
  • a second self closing mechanism is provided to bias the door 4.
  • the door 4 when the door 4 is closed, the door 4 can be urged in the order of the second self-closing mechanism portion and the first self-closing mechanism portion to make the door 4 self-close in a wide range. For this reason, when closing the door 4, the range self-closed can be expanded, the burden which closes the door 4 can be eased, and a half door state can be prevented. Therefore, the convenience of the door opening and closing mechanism and the refrigerator 1 can be improved.
  • a first opening mechanism portion is provided which biases the door 4 in the direction of opening the door 4 in the section S1 on the door opening side from the first opening start position P3 near the second self closing start position P4.
  • the door 4 can be kept open even if a weak force is applied in the direction to close the door 4, and the user can close the door 4 by the second self-closing mechanism. 4 can be closed reliably.
  • the first opening start position P3 is disposed closer to the door closing than the second self-closing starting position P4, and the door 4 is closed by the second self-closing mechanism against the biasing force of the first opening mechanism. For this reason, even if the user tries to close the door 4 weakly and can not exceed the first opening start position P3, the second self closing mechanism part biases the door 4 in the closing direction, so the first opening is performed. It is possible to prevent the door 4 from being repelled by the biasing force of the mechanism section. Therefore, the convenience of the door opening and closing mechanism and the refrigerator 1 can be further improved.
  • first self-closing mechanism and the first opening mechanism can be easily realized by the inclined surfaces 22a and 22c (first and second inclined surfaces) and the follower 14d to bias the door 4 by its own weight. Can.
  • second self-closing mechanism and the second opening mechanism that bias the door 4 by driving the motor by the cam surfaces 61a and 62a and the slider 59.
  • the rib 61 may be disposed between the rib 62 and the pivot 4c, and the cam surface 61a and the cam surface 62a may be inclined so as to be closer to the body 2 as it approaches the pivot 4c.
  • the slider 59 moves in a direction approaching the pivot 4c in the X direction to open the door 4 and move in a direction away from the pivot 4c to close the door 4.
  • the sliders 59 may be provided on the upper surface of the door 4 and the cam surfaces 61 a and 62 a may be provided on the rack 57.
  • FIG. 15 shows a developed view of the uneven portion 22 and the follower 14d of the refrigerator 1 of the second embodiment.
  • the same parts as those of the first embodiment shown in FIGS. 1 to 14 described above are given the same reference numerals.
  • the inclined surfaces 22a of the concavo-convex portion 22 constituting the first self closing mechanism portion have a plurality of inclination angles.
  • the other parts are the same as in the first embodiment.
  • the inclined surface 22a has an inclined surface 22b on the door closing side of the switching position Ps between the closing position P0 and the second self-closing end position P1 in which the inclination angle with respect to the horizontal is gradually switched. For this reason, the biasing force of the door 4 of the first self closing mechanism by its own weight is smaller between the switching position Ps and the closing position P0 than between the switching position Ps and the second self closing end position P1.
  • the speed at which the follower 14d slides and self-closes on the inclined surface 22a is accelerated, and since the acceleration is reduced by the inclined surface 22b, the self-closing speed is restricted. Thereby, the impact at the time of closing the door 4 by the 1st self-closing mechanism part is relieved. For this reason, it is possible to reduce the scattering and impact noise of the stored product due to the impact.
  • the fingers disposed on the front of the main body 2 touch the inner surface of the door 4 closed at low speed, the fingers can be retracted, and finger jamming can be prevented.
  • the biasing force by the first self-closing mechanism between the switching position Ps on the door closing side relative to the second self-closing end position P1 and the closing position P0 (first self-closing end position) is switched It is smaller than the biasing force by the said 1st self-closing mechanism part between the position Ps and the 2nd self-closing end position P1.
  • FIG. 16 shows a top view of the refrigerator 1 of the third embodiment.
  • the same parts as those of the first embodiment shown in FIGS. 1 to 14 described above are given the same reference numerals.
  • the slider 59 is rotationally moved, and the structure of the guide portion 60 is different.
  • the other parts are the same as in the first embodiment.
  • the drive unit 58 of the door opening and 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 first embodiment.
  • a slider 59 is provided on the lower surface of the reduction gear 56. Thus, the slider 59 is rotated by the drive of the motor 52.
  • the guide portion 60 is provided on the upper surface of the door 4 and has a rib 63, a rib 73 and a rib 74 protruding upward.
  • the rib 63 has a cam surface 63a (second cam surface)
  • the rib 73 has a cam surface 73a symmetrical to the cam surface 63a with respect to a center line CL parallel to the Y direction of the reduction gear 56.
  • the cam surface 63 a inclines so as to enter the inside of the track circle of the slider 59 while moving away from the pivot 4 c as the main body 2 is approached.
  • the cam surface 73a inclines so as to enter the inside of the track circle of the slider 59 while approaching the pivot shaft 4c as the main body 2 is approached.
  • the rib 74 has a cam surface 74 a (first cam surface) that inclines away from the pivot 4 c as the main body 2 is approached. That is, the inclination of the cam surface 74a and the cam surface 73a with respect to the Y direction is opposite. Further, the cam surface 74a and the cam surface 73a are both disposed on one side (in the present embodiment, the side of the pivot shaft 4c) with respect to the center line CL parallel to the Y direction of the reduction gear 56. It is arranged closer to the main body 2 than the surface 73a.
  • the slider 59 When the door 4 is in the closed state and in the drive standby state, the slider 59 is disposed at a retracted position which does not interfere with the guide portion 60 even if the door 4 is manually opened and closed. That is, the slider 59 is disposed between the rib 63 and the rib 73 at the retracted position. Further, the slider 59 is disposed on the outer peripheral side of the locus by the rotation of the cam surfaces 73a and 74a with the opening and closing of the door 4 around the pivot shaft 4c and the inner peripheral side of the locus by the rotation of the cam surface 63a. Ru.
  • the drive unit 58 drives the door 4 to open.
  • the reduction gear 56 rotates clockwise CW in the figure as shown in FIG. 17, and the slider 59 moves away from the pivot shaft 4c in the X direction with movement in the Y direction (in the diagram, Move to the left).
  • the slider 59 slides on the cam surface 63 a of the rib 63.
  • the follower 14d When the door 4 moves in the opening direction by the sliding of the slider 59 and the cam surface 63a, the follower 14d lifts the inclined surface 22a against the biasing force of the door 4 by its own weight as shown in FIG. And the door 4 is opened while rising. Further, as shown in FIG. 9 described above, the follower 14d slides on the horizontal surface 22d, and the door 4 is opened horizontally.
  • the slider 59 When the door 4 is opened by a predetermined amount, the slider 59 reaches the end (rear end) of the cam surface 63a, and the opening operation is ended. At this time, the follower 14d is disposed at the second opening end position P4 '(second self closing start position P4) on the door opening side than the first opening start position P3 (see FIG. 5). Accordingly, the drive portion 58 including the slider 59 and the cam surface 63a constitute a second opening mechanism portion for urging the door 4 in the direction of opening the section S2.
  • the driving unit 58 drives the door 4 to close.
  • the reduction gear 56 rotates counterclockwise CCW in the figure as shown in FIG. 19, and the slider 59 in the retracted position approaches the pivot shaft 4c in the X direction (rightward in the figure). Moving. As a result, the slider 59 slides on the cam surface 74 a of the rib 74 and the door 4 is closed.
  • the slider 59 reaches the end (front end) of the cam surface 74a.
  • the follower 14d is disposed on the inclined surface 22a, and the door 4 is disposed at the second self-closing end position P1 (see FIG. 5) closer to the door closing than the first self-closing start position P2.
  • the drive portion 58 including the slider 59 and the cam surface 74a constitute a second self-closing mechanism portion which biases the door 4 in the closing direction in the section T2.
  • the door 4 When the door 4 is closed to the second self closing end position P1, it is biased in the closing direction by the first self closing mechanism, and the slider 59 separates from the cam surface 74a. Then, as shown in FIG. 21, the door 4 is disposed at the switching position Ps where the slider 59 abuts on the cam surface 73a, and the sliding surface of the slider 59 is switched from the cam surface 74a to the cam surface 73a.
  • the switching position Ps is not shown, it is disposed between the closing position P0 and the second self-closing end position P1 (see FIG. 15) as in the second embodiment.
  • the slider 59 is pressed against the cam surface 73a by the weight of the door 4 and supports the door 4 against the biasing force of the first self-closing mechanism. Then, as the slider 59 is inverted and rotated clockwise in the drawing, the follower 14d descends on the inclined surface 22a (see FIG. 5) and is guided in the direction in which the door 4 is closed. Thereby, the door 4 is closed as shown in FIG. Thereafter, the slider 59 is disposed at the retracted position shown in FIG.
  • the door 4 is closed at a predetermined speed corresponding to the rotational speed of the slider 59 between the switching position Ps and the closing position P0, and the accelerating speed is restricted by the weight of the door 4. Therefore, the slider 59 and the cam surface 73 a constitute a restricting portion that restricts the closing speed of the door 4 by the first self-closing mechanism that biases the door 4.
  • the impact when the door 4 accelerated by the first self-closing mechanism portion stops at the closing position P0 is mitigated. Therefore, it is possible to reduce the scattering and impact noise of the stored product due to the impact.
  • the closing speed of the door 4 is regulated to be low, it is possible to easily withdraw the finger when touching the inner surface of the door 4 to which the finger disposed on the front of the main body 2 is closed. Therefore, finger jamming at the time of closing can be prevented.
  • the slider 59 When the door 4 is manually closed to the closing position P0, the slider 59 is disposed at the retracted position, so that the door 4 is closed by preventing interference between the slider 59 and the guide portion 60. Can. Further, as in the first embodiment, when the door 4 is manually closed to the closing position P0, the drive of the motor 52 may be prevented.
  • the same effect as that of the first embodiment can be obtained.
  • the second self-closing mechanism portion which biases the door 4 in the direction to close the door 4 in the section T2 by the rotating slider 59 and the cam surface 74a.
  • the speed of the door 4 by the first self-closing mechanism portion is regulated by the regulating portion formed by the slider 59 and the cam surface 73a. Thereby, scattering and impact noise of stored products due to impact when the door 4 is closed can be reduced, and finger jamming can be prevented.
  • the rib 63 may be omitted and the slider 59 may slide on the cam surface 73 a to open the door 4. Further, the rib 73 may be omitted and the rib 74 may be disposed at a position symmetrical to the present embodiment with respect to the center line CL.
  • the plurality of sliders 59 may be arranged in rotational symmetry. As a result, the slider 59 after the door opening drive can be quickly disposed at the retracted position.
  • FIG. 23 shows a front view of the refrigerator 1 of the fourth embodiment.
  • the door 4 can be selectively opened from the left and right, and the rib 74 of the guide portion 60 and the rib 64 (see FIG. 29) symmetrical with respect to the center line CL are provided. Further, an inclined surface is formed on the angle 11 (see FIG. 25) without the uneven portion 22, and a roller 18 (see FIG. 25) is provided in place of the follower 14d.
  • the other parts are the same as in the third embodiment.
  • the door 4 of the refrigerator compartment 3 has handles 4a and 4b at the left and right ends, and can be pivotally supported by the pivot shaft 4c or the pivot shaft 4d to be selectively opened and closed from the two left and right directions.
  • FIG. 24 is a perspective view showing a state in which the upper door 4 of the refrigerator 1 is opened.
  • a pair of support members 10 is disposed at the upper and lower ends of the refrigerator compartment 3 at the left and right ends, and an angle 11 extending in the left-right direction is disposed at the lower side.
  • a pair of cam mechanisms 12 disposed symmetrically with respect to the center line of the door 4 is provided.
  • the same pair of cam mechanisms 12 are provided at both left and right ends of the angle 11 and at both 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 respectively on the upper and lower sides of the door 4 to form a double-opened door 4. Further, a roller 18 (see FIG. 25) rolling on the angle 11 is provided at the central portion of the lower surface of the door 4.
  • the rear end of the horizontal portion 11h of the angle 11 is provided with an inclined surface 11a which is inclined rearward and downward, and the front end is provided with an inclined surface 11c which is inclined downward and forward.
  • a horizontal surface 11d is provided between the upper end of the inclined surface 11a and the upper end of the inclined surface 11c.
  • the support member 17 is attached to the lower surface of the door 4 (see FIG. 24) by a screw (not shown) inserted into the through hole 17a.
  • a plurality of rollers 18 having rotational shafts disposed on the left and right are pivotally supported.
  • the roller 18 and the inclined surface 11 a constitute a first self-closing mechanism that biases the door 4 in the closing direction.
  • the first self-closing mechanism section is a section between the first self-closing start position P2 where the roller 18 is disposed at the upper end of the inclined surface 11a and the closing position P0 (first self-closing end position) The door 4 is energized at T1.
  • the roller 18 and the inclined surface 11 c constitute a first opening mechanism that biases the door 4 in the opening direction.
  • the first opening mechanism portion is a door at section S1 between the first opening start position P3 with the roller 18 disposed at the upper end of the inclined surface 11c and the first opening end position P5 disposed with the lower end. Turn 4 on.
  • FIG. 27 is a top view showing the cam mechanism 12 above the door 4 and shows the door 4 in a closed state.
  • FIG. 28 is a cross-sectional view taken along the line AA of FIG.
  • the cam mechanism 12 disposed at the left and right ends includes a hinge pin 21 provided on the support member 10, a rib 24, a first engagement protrusion 25 (each shown by hatching in the figure), 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 a metal insert-molded on the support member 10, and forms a pivot 4c and a pivot 4d (see FIG. 23) of the door 4.
  • the ribs 24 are formed into an arch shape by resin molding and disposed around the hinge pins 21.
  • a guide surface 24 a consisting of a cylindrical surface concentric with the hinge pin 21 is formed on the inner surface of the rib 24.
  • the guide surface 24 a of the rib 24 may be formed by a large number of pins and projections, and the envelope surface may be formed in a circular arc concentric with the hinge pin 21. That is, the guide surface 24 a may be formed along an arc concentric with the hinge pin 21.
  • the first engagement protrusions 25 are disposed between the left and right hinge pins 21.
  • a cylindrical surface 25a concentric with the closer hinge pin 21 and a cylindrical surface 25b concentric with the hinge pin 21 opposite to each other are provided on the first engagement protrusion 25.
  • the grooved cam 31, the boss 34 and the second engagement protrusion 35 are integrally formed by a resin molded cam member 30, and the cam member 30 is attached to the upper surface of the door 4.
  • the grooved cam 31 is engaged with the hinge pin 21 and has a continuous first groove 32 and a second groove 33.
  • the first groove 32 is opened at the main body 2 side, and is formed to be inclined such that the open end faces inward in a plane perpendicular to the pivots 4c and 4d.
  • the second groove 33 is continuous with the end opposite to the open end of the first groove 32, and is bent outward from the first groove 32 and extends away from the open end of the first groove 32.
  • the boss 34 is provided with a second groove 33 and has a cylindrical surface 34 a that slides on the guide surface 24 a of the rib 24. Further, on the circumferential surface of the boss 34, a relief portion 34b (see FIG. 30) is provided which avoids 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 or projections. That is, the envelopes of a large number of pins and projections forming the circumferential surface of the boss 34 may be formed into a cylindrical surface.
  • the second engagement protrusion 35 has sliding surfaces 35 a and 35 b that slide on the cylindrical surfaces 25 a and 25 b of the first engagement protrusion 25.
  • the cam member 30 has a recess 36 recessed around the second engagement projection 35 for avoiding interference with the first engagement projection 25.
  • FIG. 29 shows a top view of the refrigerator 1.
  • the door opening and 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 third embodiment.
  • a slider 59 is provided on the lower surface of the reduction gear 56.
  • the guide portion 60 is provided symmetrically with respect to the center line CL, and includes a rib 63, a rib 64, a rib 73, and a rib 74 protruding upward.
  • the rib 63, the rib 73 and the rib 74 are formed in the same manner as in the third embodiment.
  • the rib 64 is formed symmetrically with the rib 63 with respect to the center line CL, and has a cam surface 64a (first cam surface).
  • the hinge pin 21 Since the first groove 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 end of the left and right first grooves 32. Therefore, it is possible to prevent the door 4 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.
  • the operation buttons may not be independent as long as the user can indicate the opening direction of the door 4.
  • the drive unit 58 drives the door 4 to open from the right side. That is, the reduction gear 56 rotates counterclockwise CCW in FIG. 29, and the slider 59 moves in the direction away from the pivot 4d in the X direction (rightward in the drawing) with movement in the Y direction. As a result, the slider 59 slides on the cam surface 73 a of the rib 73 to press the door 4 to the right in the drawing.
  • the hinge pin 21 engaged with the groove cam 31 on the left side relatively moves in the second groove 33 outward (left in the figure) in the direction away from the first groove 32. Since the distance between both hinge pins 21 is constant, when the left hinge pin 21 moves relative to the outside, the right hinge pin 21 moves inward.
  • the open end of the first groove 32 is inclined toward the inside of the door 4, and the right hinge pin 21 moves inward to move the first groove 32 toward the open end of the first groove 32. Move relative to each other. Accordingly, while the door 4 is pivoted, the door 4 slides from the side of the left pivot shaft 4d to the right side, and the door 4 is opened from the right.
  • the roller 18 When the door 4 moves in the opening direction by the sliding of the slider 59 and the cam surface 73 a, the roller 18 ascends the inclined surface 11 a (see FIG. 25) against the biasing force of the door 4 by its own weight. Is opened while rising. Further, the roller 18 slides on the horizontal surface 11d (see FIG. 25), and the door 4 is opened horizontally.
  • the left hinge pin 21 reaches the closed end of the second groove 33, and the cam mechanism 12 is disposed in 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.
  • the cam mechanism 12 slide-limits the door 4 at the second locking position and rotatably supports it.
  • the cylindrical surface 25b of the first engagement protrusion 25 on the right side slides with the sliding surface 35b of the second engagement protrusion 35, and the cylindrical surface 25a of the first engagement protrusion 25 on the left side and the second engagement protrusion The sliding surface 35a of 35 slides. Thereby, the door 4 can be rotated more stably.
  • the slider 59 continues sliding on the cam surface 73a even after the engagement of the right cam mechanism 12 is released.
  • the slider 59 reaches the end (rear end) of the cam surface 73a, and the opening operation is ended.
  • the drive portion 58 including the slider 59 and the cam surface 73a constitute a second opening mechanism portion for urging the door 4 in the opening direction in the section S2 (see FIG. 5).
  • the drive portion 58 including the slider 59 and the cam surface 63a constitute a second opening mechanism.
  • the left and right cam mechanisms 12 are operated reverse to the above.
  • the roller 18 slides on the inclined surface 11c (see FIG. 25), and the door 4 ascends.
  • the detection sensor detects that the door 4 is closed to the second self-closing start position P4 (see FIG. 5)
  • the driving unit 58 drives the door 4 to close.
  • the reduction gear 56 rotates clockwise CW in the figure, and the slider 59 at the retracted position moves in the direction (rightward in the figure) approaching the pivot 4d in the X direction. Do. As a result, the slider 59 slides on the cam surface 64 a of the rib 64 and the door 4 is closed.
  • the drive portion 58 including the slider 59 and the cam surface 64a constitute a second self-closing mechanism portion for urging the door 4 in the opening direction in the section T2 (see FIG. 5).
  • the drive portion 58 including the slider 59 and the cam surface 74 a constitute a second self-closing mechanism.
  • the first self-closing mechanism urges the door 4 in the closing direction, and the slider 59 separates from the cam surface 64a. Then, as shown in FIG. 36, the door 4 is disposed at the switching position Ps where the slider 59 abuts on the cam surface 63a, and the sliding surface of the slider 59 is switched from the cam surface 64a to the cam surface 63a.
  • the slider 59 supports the door 4 against the biasing force of the first self-closing mechanism, and the closing speed of the door 4 is regulated. Then, in the drawing of the slider 59, the door 4 is guided in the closing direction by the rotation of the counterclockwise CCW, and the door 4 is closed as shown in FIG. Therefore, the sliding portion 59 and the cam surface 63a form a regulating portion that regulates the closing speed of the door 4 by the first self-closing mechanism. Similarly, when the door 4 is opened from the left, the slider 59 and the cam surface 73 a form a regulating portion that regulates the closing speed of the door 4 by the first self-closing mechanism. Thereby, the impact at the time of closing the door 4 by the 1st self-closing mechanism part is relieved.
  • the same effect as that of the third embodiment can be obtained.
  • the cam surface 63a on which the slider 59 slides when the door 4 is opened from the right side a restriction portion when the door 4 is opened from the left side is formed.
  • a restricting portion when the door 4 is opened from the right side is formed by the cam surface 73 a on which the slider 59 slides when the door 4 is opened from the left side. Therefore, parts can be made common and cost can be reduced.
  • 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 projection 25 may be provided on the door 4 and the second engagement projection 35 may be provided on the main body 2.
  • the first self-closing mechanism portion and the first opening mechanism portion bias the door 4 by its own weight, but the door 4 may be biased by an elastic body such as a spring.
  • the second self-closing mechanism and the second opening mechanism urge the door 4 by driving the motor 52, the door 4 is attached when the door 4 is moved in one direction by an elastic body or the like having a ratchet mechanism. The biasing force may be released when moving in the other direction.
  • first self closing mechanism, the first opening mechanism, the second self closing mechanism and the second opening mechanism are provided for the pivoting door 4, the first relative to the sliding door 4 is provided.
  • a self-closing mechanism, a first opening mechanism, a second self-closing mechanism, and a second opening mechanism may be provided.
  • ADVANTAGE OF THE INVENTION can utilize for apparatuses, such as a refrigerator provided with the door opening and closing mechanism which opens and closes a door.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
PCT/JP2017/047309 2017-07-26 2017-12-28 扉開閉機構 WO2019021506A1 (ja)

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WO2024110614A1 (en) 2022-11-25 2024-05-30 Novo Nordisk A/S Oral administration of peptide therapeutics, such as glp-1

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CN110892218A (zh) 2020-03-17
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CN110892218B (zh) 2021-10-12
JPWO2019021506A1 (ja) 2020-06-11
TW201910704A (zh) 2019-03-16

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