JP4231040B2 - Freezer refrigerator - Google Patents

Description

  The present invention relates to a refrigerator-freezer provided with an open / close door that opens and closes using a hinge as a fulcrum.

  In general, the refrigerator compartment of a refrigerator-freezer is frequently used and frequently opened and closed. The structure is a hinge type that opens and closes with a hinge as a fulcrum, and there is a door that has one door or two doors, such as a double door, and the inside is a door pocket.

The door pocket allows food and drinking water to be easily taken in and out. When food or drinking water is put into the door pocket, the door increases in weight and opens and closes. In particular, in recent years, there has been proposed a door opening and closing device that can easily open and close the door from the point that it becomes difficult for children and the elderly to open and close, due to the increase in size of the refrigerator main body.
JP 2005-127527 A

  A door opening and closing device that assists in opening and closing a door has a structure including a retracting member provided on the door and door opening and closing means that can be coupled to or separated from the retracting member. Since the door opening / closing means is responsible for both door closing and opening, a linkage mechanism is required to ensure the operation of both doors, which complicates the structure, and the door is forcibly closed by the door opening / closing means. As a result, the impact when fully closed increases. For this reason, the problem which has a bad influence on the sealing member etc. around a door including an impact sound is caused.

  Accordingly, an object of the present invention is to provide a refrigerator-freezer that can provide a reliable opening / closing operation with a simple structure and a small impact during opening / closing of the door.

In order to achieve the above object, according to the present invention, firstly, an open / close door that opens and closes with a hinge as a fulcrum in the refrigerator body is engaged with each other when the open / close door is closed, and when the fully closed state is maintained while being engaged. An independent door pull-in device that retracts the door with spring pressure until it is fully closed, an impact receiving device that receives the shock when the door is fully closed, while Ru and a door extrusion apparatus for extruding toward the opening direction of the door, from the hinge side, the impact receiving device, door pull device, while being arranged in the order of door extrusion apparatus, and at least the impact receiving device The opening / closing door pull-in device has a unit structure assembled to a base member attached to the refrigerator main body.
Secondly, an open / close door that opens and closes on the refrigerator main body with a hinge as a fulcrum, and engages when the open / close door is closed, and the open / close door is pulled in with a spring pressure until the fully closed state is engaged. Opening / closing door retracting device, impact receiving device that receives the impact when the door is fully closed, and opening / closing door push-out device that pushes the opening / closing door in the opening direction by turning on the operation part The impact catching device is disposed at a position closest to the hinge, and is capable of moving forward and backward while projecting from the cylinder provided in the refrigerator main body and constantly biased to the impact standby position. The damper door is provided with a damper contact surface that comes into surface contact with the damper rod tip receiving surface at the impact standby position when opening and closing.
Thirdly, an open / close door that opens and closes with a hinge as a fulcrum in the refrigerator main body, and engages when the open / close door is closed, and the open / close door is pulled in with a spring pressure until the fully closed state with the door closed. Opening / closing door retracting device, impact receiving device that receives the impact when the door is fully closed, and opening / closing door push-out device that pushes the opening / closing door in the opening direction by turning on the operation part The door retractor is disposed outside the impact catching device at a position close to the hinge, and has a door arm that protrudes from the door and has an engaging protrusion at the tip, and a refrigerator main body. A rotating body having a pull-in recess that is rotatable between an engagement standby position and a pull-in position that are provided and engage with the engaging protrusion, and the pull-in recess of the rotary body is switched between an engagement standby position and a pull-in position. Characterized in that comprising a biasing means for energizing.
Fourthly, an open / close door that opens and closes with a hinge as a fulcrum in the refrigerator main body, and engages when the open / close door is closed, and the open / close door is retracted by spring pressure until the fully closed state with the door closed. Opening / closing door retracting device, impact receiving device that receives the impact when the door is fully closed, and opening / closing door push-out device that pushes the opening / closing door in the opening direction by turning on the operation part And the rotating body of the open / close door retracting device is supported rotatably about the rotating shaft by a base member that rises the rotating shaft and a rotating cover that presses the upper surface of the rotating body, and the rotating cover is supported by the base member. One of the plurality of mounting screws fixedly supported on the first and second mounting screws is provided in the vicinity of the pull-in recess at the engagement standby position.
Fifth, the open / close door that opens and closes on the refrigerator main body with a hinge as a fulcrum, and engages when the open / close door is closed, and pulls the open / close door with the spring pressure until the fully closed state is engaged. Opening / closing door retracting device, impact receiving device that receives the impact when the door is fully closed, and opening / closing door push-out device that pushes the opening / closing door in the opening direction by turning on the operation part The opening / closing door pushing device is disposed at a position farthest from the hinge outside the impact receiving device and the opening / closing door retracting device, and pushes the opening / closing door forward by turning on the operation portion. The solenoid rod is provided with damper means for receiving impact from the front.

  According to the present invention, the open / close door retracting device forcibly retracts the open / close door to the fully closed position, and a reliable fully closed state can be obtained. The open / close door pull-in device has a simple structure that pulls in with spring pressure, and because it is independent, the connection mechanism is not required and the structure can be simplified.

  In addition, when the door is fully closed, the impact receiving device works to receive and absorb the impact energy, so that adverse effects due to the impact can be avoided.

Moreover, the opening and closing door is fully closed is simply by actuating the door extrusion device, easily becomes possible to door opening, lightly total closing to door opening operation, moreover, is readily rows as Ukoto it can.
Moreover, while facilitating attachment to the refrigerator body, the number of parts can be reduced to reduce the number of parts management man-hours.
In addition, because it is close to the hinge, it is possible to reduce the interference stroke of the damper rod, and at the time of contact with the open / close door, the impact is reliably received without difficulty by the contact surface of the large area where the surface contacts each other. be able to.
In addition, the rotating body, the urging means, and the door arm provided on the open / close door can be made to have a simple structure that is unlikely to fail, and the protruding door arm can be made inconspicuous by moving toward the hinge side.
Further, the movement of the rotating body turning upward due to the impact of the engaging protrusion acting on the pull-in recess can be securely pressed down by the mounting screw at the close position, and a stable operating state can be obtained for a long period of time.
Further, while the door opening / closing door pushing device acts as the second impact receiving means, the lever can be easily pushed toward the opening direction with a small force by the lever principle by the pressing action point far from the hinge. it can.

In carrying out the present invention, first, the plurality of mounting screws are provided outside the operating range of the urging means so that the operation of the urging means is not hindered.
Second, when the retracting recess of the retracting device is rotated to the retracted position by any means before closing the door, the engaging protrusion of the door arm at the time of closing the door is engaged with the upper end edge of the retracting recess. By providing an inclined guide surface that guides and guides toward the door, for example, even if the retracting recess is accidentally rotated to the retracted position, the engaging protrusions are not adversely affected to the door closing action of the open / close door. Can be brought into the recess without any trouble, so that the door closing operation is not hindered.

  Hereinafter, embodiments of the present invention will be specifically described with reference to FIGS. 1 to 8.

  FIG. 1 is a schematic perspective view of a main part in which an impact receiving device, an opening / closing door retracting device, and an opening / closing door pushing device according to the present invention are provided on an upper surface of a refrigerator body, and FIG. 2 is a schematic front view of the refrigerator / freezer.

  The refrigerator main body 3 of the refrigerator 1 includes a refrigerator room 5, left and right ice making rooms 7 and a switching room 9, a vegetable room 11, and a freezing room 13 in order from the top. The ice making room 7 and the switching room 9 provided on the left and right sides. The front of the vegetable compartment 11 and the freezer compartment 13 is a drawer type that can be pulled out by the handles 7a, 9a, 11a, 13a.

  On the other hand, the front of the refrigerator compartment 5 is a double door opening / closing door 17 that opens and closes with a hinge 15 as a fulcrum.

  The open / close door 17 can be obtained in a fully closed state and an open state by the door opening / closing device 19.

  The door opening and closing device 19 includes an opening and closing door retracting device 21, an opening and closing door pushing device 23, and an impact receiving device 25, and a pair of left and right doors 19 are provided corresponding to the left and right opening and closing doors 17.

  Here, because of the same structure on the left and right, only one side will be described, and the right side of the drawing, which is the other side, will be denoted by the same reference numerals and detailed description thereof will be omitted.

  As shown in FIG. 1, the opening / closing door retracting device 21, the opening / closing door pushing device 23, and the impact receiving device 24 are provided on the top surface 3a of the refrigerator main body 3 from the hinge 15 side. The door pushing device 23 is arranged in this order.

  The impact catching device 25 is located close to the hinge 15, and as shown in FIG. 3, as shown in FIG. 3, the damper rod 29 protrudes from the cylinder 27 and is always urged to the impact standby position L and can be moved forward and backward. It is made up of. The tip receiving surface 29a of the damper rod 29 at the impact standby position L comes into contact with the opening / closing door 17 when the door is closed, but the contact portion of the opening / closing door 17 comes into surface contact with the damper rod tip receiving surface 29a. A damper contact surface 31 is provided.

  Therefore, it is possible to reliably receive the collision load on the surface of a large area and close to the hinge 15, so that the interference stroke of the damper rod 29 can be reduced.

  The open / close door retracting device 21 is disposed outside the impact receiving device 24 at a position close to the hinge 15, and protrudes from the upper end surface of the open / close door 17 and has an engagement protrusion 33 at the tip. 35, and a rotating plate 39 having a retracting recess 37 that is provided in the refrigerator main body 3 and that can rotate between an engaging standby position (FIG. 4) and a retracting position (FIG. 5) that engage with the engaging protrusion 33, A coil spring 41 is provided as an urging means for urging the retraction concave portion 37 of the rotary plate 39 by switching between the engagement standby position and the retraction position.

  As shown in FIG. 4, the open / close door retracting device 21 has a unit structure assembled to the base member 43 together with the impact receiving device 24 described above. As a result, the number of parts can be managed only by one point, and the base member 43 is attached to the top surface 3a of the refrigerator main body 3 at the time of assembly, so that the impact receiving device 24 and the opening / closing door retracting device 21 can be simultaneously correct. The installation is completed at the position, and a quick installation state can be obtained.

  As shown in FIGS. 5 and 6, the rotating plate 39 is rotatably inserted into and supported by a rotating shaft 45 that rises from the base member 43, and the upper surface of the rotating plate 39 is restricted by the rotating cover 47. One end of the rotating plate 39 is provided with a U-shaped lead-in recess 37 whose front is opened when viewed from the plane. The retracting portion 37 is retracted from the engagement standby position (FIG. 4) by detachably engaging with the engaging projection 33 at the tip of the door arm 35 protruding inward from the upper end of the open / close door 17. It can be rotated to a position (FIG. 5).

  The rotating plate 39 includes a coil spring 41 that serves as an urging means. One end of the coil spring 41 is rotated to a fixed spring mounting portion 49 provided on the base member 43, and the other end is rotated at a portion close to the drawing recess 37. The movable spring mounting portions 51 provided on the plate 39 are respectively locked.

  The coil spring 41 has an operating range in which the amount of movement beyond the dead center is the boundary of the axis X connecting the fixed spring mounting portion 49 and the rotating shaft 45 of the rotating plate 39. Specifically, when the movable spring mounting portion 51 exceeds the dead point in one direction, the coil spring 41 is fully stretched to maximize the spring pressure. Is rotated and positioned to the engagement standby position (FIG. 4).

  At this time, the movement of the stopper plate 39a of the rotating plate 39 is restricted by coming into contact with the first position regulating surface 43a of the base member 43.

  When the movable spring mounting portion 51 exceeds the dead center on the other side of the axis X, the coil spring 41 is fully stretched to maximize the spring pressure. The recessed portion 37 is retracted at a stroke by pressure and is positioned by rotating to the retracted position (FIG. 5).

  At this time, the movement of the stopper surface 39b provided on the rotating plate 39 comes into contact with the second position restricting surface 43b of the base member 43, and the movement is restricted, and the spring pressure of the coil spring 41 retracts the door in the fully closing direction. Is surely secured.

  The rotary cover 47 is fixedly supported by two mounting screws 52 and 53, and one of the extension portions 55 extending outward from the rotary cover 47 is fixedly supported by the first mounting screw 52. The other is fixedly supported by the second mounting screw 53 on the inner side of the rotary cover 47 at a position close to the pull-in recess 37 at the engagement standby position (FIG. 4).

  In this case, the rotating plate 39 through which the second mounting screw 53 passes is provided with a circular arc hole 57 allowing the rotating plate 39 to rotate as shown in FIG. .

  The mounting positions of the first and second mounting screws 52 and 53 are arranged outside the operating range of the coil spring 41 as shown in FIGS. 4 and 5, so that no trouble occurs in the operation of the coil spring 41. ing.

  Of the first and second mounting screws 52 and 53 for attaching the rotating cover 47, the second mounting screw 53 has the following functions. As shown in FIG. 4, when the retracting recess 37 is in the standby position (FIG. 4), the spring action of the coil spring 41 and when the engaging projection 33 of the door arm 35 contacts the retracting recess 37 when the door is closed. The upward pulling action works in combination with the impact action, but the upward working action is securely pressed by the second mounting screw 53.

  In the above embodiment, the fixing support state of the rotating plate 39 can be obtained with the minimum two mounting screws 52 and 53, but third and fourth mounting screws may be provided. Is possible. In this case, it is a condition that the mounting position is outside the operating range of the coil spring 41.

  On the other hand, the retracting recess 37 of the rotary plate 39 is formed in a U shape by the rising peripheral wall, and the engaging protrusion 33 of the door arm 35 and a wide contact surface are secured, while the retracting recess 37 includes For example, even if the retracting recess 37 in the engagement standby position (FIG. 4) is directly rotated to the retracting position (FIG. 5) by means such as mischief, the opening / closing of the open / close door 17 will not be hindered. It has become. Specifically, an inclined guide surface 59 inclined upward toward the upper edge 37a of the retracting recess is provided in the retracting recess 37 (front side in FIG. 5).

  Thus, even when the retracting recess 37 at the engagement standby position (FIG. 4) is rotated to the retracted position (FIG. 5) when the door is closed, the engagement protrusion 33 of the door arm 35 is Since it is a free end, as shown by the phantom line, it rises naturally along the inclined guide surface 59 and engages with the pull-in recess 37 when the door 17 is fully closed. As a result, the retracting operation of the door 17 can be ensured again from the next operation.

  The open / close door push-out device 23 is disposed at a position farthest from the hinge 15 and is a solenoid type in which a solenoid rod 61 protrudes as shown in FIG.

  A mounting flange 63a of the apparatus main body 63 is integrally fixed to a mounting portion 65 provided on the base member 43 by a fixing means such as a screw.

  The solenoid rod 61 moves forward (arrow) when the solenoid 69 is actuated by turning on the operation portion 67 serving as a touch switch provided on the opening / closing door 17, and pushes the opening / closing door 17 in the fully opened state toward the opening direction and returns. The spring 71 can be restored.

  FIG. 8 shows the operating characteristics of the solenoid 69, which is always stronger than the coil spring 41 that urges the rotating plate 39 to the engagement standby position (FIG. 4) and the retracted position (FIG. 5). I have. Particularly, when the coil spring 41 exceeds the dead point, the maximum characteristic peak value is set so as to appear in a region where the spring pressure works strongly.

  Further, a shock absorbing spring 73 serving as a damper means is provided at the rear end portion of the solenoid rod 61. Even if a strong shock acts on the solenoid rod 61 when the door 17 is closed, the shock absorbing spring is provided. By performing shock absorption with 73, the shock receiving device 25 described above functions as a second shock receiving means.

  According to the door opening / closing device 19 configured as described above, the solenoid rod 61 of the opening / closing door push-out device 23 works by operating the operation unit 67 when fully closed, so that the opening / closing door 17 can be easily and quickly operated. It can be pushed forward and opened. At this time, the solenoid rod 61 is farthest away from the hinge 15, and the pushing operation point is far from the hinge 15. Energy can be small.

  Next, when the open / close door 17 in the open state is pushed by hand in the closing direction, the engaging projection 33 of the door arm 35 engages with the retracting recess 37 of the rotating plate 39 and simultaneously the rotating plate 39 is counteracted. Turn clockwise. When the rotating plate 39 is rotated, the coil spring 41 exceeds the dead center as the axis X, and the rotating plate 39 is rotated to the retracted position (FIG. 5) by the spring pressure of the coil spring 41 at that time. As a result, the open / close door 17 is surely fully closed without becoming a half door or the like.

  On the other hand, when the opening and closing door 17 is closed, the impact receiving device 25 is activated when approaching the fully closed state, and at the same time, in combination with the double impact absorbing means by the solenoid rod 61, the collision energy at the closing time is reliably received. Impact noise can be kept small. Moreover, the sealing member around the door is not adversely affected.

  Even if the rotating plate 39 is rotated from the engagement standby position (FIG. 4) to the retracted position (FIG. 5) due to a child's mischief or the like, the engagement protrusion 33 of the door arm 35 follows the inclined guide surface 59. Therefore, it is possible to obtain a stable operating state over a long period of time without adversely affecting the closing operation of the door 17.

The outline perspective view showing the important section of the refrigerator-freezer concerning the present invention. The outline front view of a refrigerator-freezer. The outline explanatory drawing at the time of contact of the damper rod tip side of an impact catching device, and an opening-and-closing door. FIG. 3 is a schematic plan view showing a state in which the impact receiving device and the opening / closing door retracting device have a unit structure, and the retracting recess provided on the rotating plate of the opening / closing door retracting device is in the engagement standby position. FIG. 5 is a schematic plan view similar to FIG. 4 showing a state in which a retracting recess provided in the rotary plate of the open / close door retracting device is rotated from the standby position to the retracted position. The general | schematic exploded perspective view which showed the state which removed the impact receiving device and the opening-and-closing door retracting device from the base member. The schematic plan view which showed the opening-and-closing door extrusion apparatus. The operation characteristic explanatory view showing the relation between the opening / closing door retracting device and the opening / closing door pushing device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Refrigerator main body 15 Hinge 17 Opening / closing door 19 Door opening / closing device 21 Opening / closing door retracting device 23 Opening / closing door pushing-out device 25 Impact receiving device 27 Cylinder 29 Damper rod 29a Damper rod tip receiving surface 31 Damper contact surface 33 Engaging projection 35 Door arm 37 Pull-in recess 37a Pull-in recess upper end edge 39 Rotating plate 41 Coil spring (biasing means)
45 Rotating shaft 47 Rotating cover 52, 53 Mounting screw 59 Inclined guide surface 61 Solenoid rod 71 Spring for absorbing shock (damper means)

Claims (7)

An open / close door that opens and closes on the refrigerator body with a hinge as a fulcrum, and engages when the open / close door is closed, and pulls the open / close door with spring pressure until the fully closed state is engaged. Ru with a device, and a shock receiving device for receiving the fully closed shock fully closed door, the oN operation of the operation unit and the opening and closing door extrusion apparatus for extruding toward the door when fully closed the opening direction On the other hand, from the hinge side, an impact receiving device, an opening / closing door retracting device, an opening / closing door pushing device are arranged in this order, and at least the impact receiving device and the opening / closing door retracting device are assembled to a base member attached to the refrigerator body The refrigerator-freezer characterized by becoming . An open / close door that opens and closes on the refrigerator body with a hinge as a fulcrum, and engages when the open / close door is closed, and pulls the open / close door with spring pressure until the fully closed state is engaged. A device, an impact receiving device that receives an impact when the door is fully closed, and an opening and closing door push-out device that pushes the opening and closing door toward the opening direction when the operation unit is turned on. The impact catching device is disposed at a position closest to the hinge, and is provided with a cylinder provided in the refrigerator body and a forward and backward damper rod that protrudes from the cylinder and is always urged to an impact standby position. On the other hand, the open / close door is provided with a damper contact surface that is in surface contact with the damper rod tip receiving surface at the impact standby position when opening and closing . An open / close door that opens and closes on the refrigerator body with a hinge as a fulcrum, and engages when the open / close door is closed, and pulls the open / close door with spring pressure until the fully closed state is engaged. A device, an impact receiving device that receives an impact when the door is fully closed, and an opening and closing door push-out device that pushes the opening and closing door toward the opening direction when the operation unit is turned on. The open / close door retracting device is disposed outside the impact catching device at a position close to the hinge, and has a door arm protruding from the open / close door and having an engaging protrusion at a tip thereof, and provided on the refrigerator body. A rotating body having a retractable recess that can rotate between an engaging standby position and a retracted position that engage with the mating protrusion, and a retracting recess of the rotating body is switched between the engaged standby position and the retracted position and biased. Refrigerator, characterized in that it consists of the energizing means. An open / close door that opens and closes on the refrigerator body with a hinge as a fulcrum, and engages when the open / close door is closed, and pulls the open / close door with spring pressure until the fully closed state is engaged. A device, an impact receiving device that receives an impact when the door is fully closed, and an opening and closing door push-out device that pushes the opening and closing door toward the opening direction when the operation unit is turned on. The rotating body of the opening / closing door retracting device is rotatably supported around the rotating shaft by a base member on which the rotating shaft rises and a rotating cover that presses the upper surface of the rotating body, and the rotating cover is fixedly supported on the base member. One of the plurality of mounting screws, one of which is provided in the vicinity of the drawing recess at the engagement standby position . An open / close door that opens and closes on the refrigerator body with a hinge as a fulcrum, and engages when the open / close door is closed, and pulls the open / close door with spring pressure until the fully closed state is engaged. A device, an impact receiving device that receives an impact when the door is fully closed, and an opening and closing door push-out device that pushes the opening and closing door toward the opening direction when the operation unit is turned on. The opening / closing door push-out device is disposed at a position farthest from the hinge outside the impact receiving device and the opening / closing door retracting device, and a solenoid rod that pushes the opening / closing door forward by turning on the operation portion. And a solenoid rod provided with damper means for receiving a shock from the front . 5. The refrigerator-freezer according to claim 4, wherein the plurality of mounting screws are provided outside the operating range of the urging means. The retracting recess of the opening / closing door retracting device guides the engaging projection of the door arm when the door is closed toward the upper edge of the retracting recess of the retracting recess when the retracting recess is rotated to the retracted position by the closing operation of the opening / closing door. according to claim 1, refrigerator mounting serial to any one of 3, 4, characterized in that to comprise an inclined guide surface for.

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