JP2007113309A - Support structure of opening-closing door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide support structure of an opening-closing door capable of preventing lowering by secular use of the opening-closing heavy door without using new member and part. <P>SOLUTION: At least three pieces or more, for example, a first hinge 3a, a second hinge 3b, a third hinge 3c and a fourth hinge 3d for rotatably connecting an opening part 2 and the opening-closing door 4, are arranged in an opening edge part of the opening part 2 arranged in a storage body 1. In this case, an installation interval between these hinges 3a, 3b, 3c and 3d, that is, an interval 9a between the first hinge 3a and the second hinge 3b, an interval 9b between the second hinge 3b and the third hinge 3c, and an interval 9c between the third hinge 3c and the fourth hinge 4d, are narrowly formed as going to the upper side of the opening part 2 (9a<9b<9c). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a support structure for an open / close door, and more particularly, to a support structure for an open / close door that is attached to an opening provided in a cabinet so as to be opened and closed via a hinge.

  2. Description of the Related Art Conventionally, as a cold storage for storing stored items such as vegetables and grains at a low temperature, one having a single-opening or double-opening door is used. These open / close doors are mounted on the cabinet side so that an opening provided in the cabinet can be opened and closed via a hinge, and further, a packing is attached to maintain hermeticity.

  Also, in this type of cool box, etc., depending on the required performance of the cool box, high cold performance and physical strength are required. There is a method such as giving thickness to the surface. However, these methods increase the weight of the opening / closing door itself, and the phenomenon that the opening / closing door falls due to use over time becomes a problem.

As a method for solving the phenomenon of the door being lowered, there is known a structure in which a door lowering prevention guide is provided for guiding the door in the upward direction when the door is closed and closed (see, for example, Patent Document 1). In addition, as another structure to prevent the door from falling, a door lowering prevention roller is attached to the lower end of the free end portion on the opposite side to the hinge mounting portion of the door, and the roller is provided on the bottom wall of the cabinet. There is known a structure that can be received by a received roller seat (for example, see Patent Document 2).
JP 2000-356461 A (Claims, FIGS. 5 to 12) JP 2001-349130 A (Claims, FIG. 2)

  However, in any of the techniques described in JP 2000-356461 A and JP 2001-349130 A, new members and parts such as a door lowering prevention guide, a door lowering prevention roller, and a roller seat are prepared. There is a problem that the structure is complicated and the cost is increased.

  The present invention has been made in view of the above circumstances, and provides a support structure for an open / close door that can prevent the open / close door having a large weight from falling due to aged use or the like without using new members and parts. This is the issue.

  In order to achieve the above object, the invention according to claim 1 is a support structure for an opening / closing door that opens and closes an opening provided in a box, and the opening and the opening / closing door are provided at an opening edge of the opening. At least three hinges that are pivotably connected to each other, and the installation interval of the plurality of hinges is formed narrower toward the upper side of the opening.

  By configuring in this way, the installation interval of at least three or more hinges installed at the opening edge of the opening is formed narrower toward the upper side of the opening, thereby adding to the upper part of the opening, Tension that causes the door to fall can be received by many hinges.

  According to a second aspect of the present invention, in the door support structure according to the first aspect, the first hinge is installed at the upper end of the opening, and the second hinge is directly below the first hinge. The third hinge is installed at the center of the height of the opening, and the fourth hinge is installed at the lower end of the opening.

  By comprising in this way, the installation position of each hinge becomes intelligible and installation of a hinge can be made easy. In addition, by installing the third hinge at the center of the height of the opening, the third hinge serves as a fulcrum for the rotation of the opening and closing door, and the rotation of the opening and closing door can be made the same both in the vertical direction.

  According to a third aspect of the present invention, in the door support structure according to the first or second aspect, the hinge located at least at the lower end of the opening among the plurality of hinges is a hinge fixed to the box side. And a hinge body pivotally attached to the hinge seat with a pivot pin. The hinge body is fixed to an end face of the door by a screw member passing through the hinge body. It is characterized by that.

  With this configuration, at least the hinge located at the lower end of the opening is opened and closed by fixing the hinge body constituting the hinge to the end surface of the open / close door by a screw member passing through the hinge body. Even if the door is lowered, the screw member can be loosened to create a gap between the opening / closing door end surface and the hinge main body, and the fall can be corrected by inserting a spacer or the like into the gap.

  In addition, the invention according to claim 4 is the door support structure according to claim 3, wherein the head of the screw member in the hinge body is covered with a hinge cover attached to the hinge body. It is characterized by.

  With this configuration, the head of the screw member in the hinge body can be covered with the hinge cover attached to the hinge body. Therefore, when there is no need to correct the lowering of the door, the screw member The head can be hidden from outside.

  (1) According to the first aspect of the present invention, since the tension applied to the upper part of the opening and causing the door to lower can be received by many hinges, the door can be prevented from lowering. . Moreover, since the arrangement of the hinges is simply changed, the cost can be reduced without requiring new members and parts.

  (2) According to the invention described in claim 2, since the installation position of each hinge can be easily understood and the installation of the hinge can be facilitated, in addition to the above (1), openings of various sizes are further provided. This also saves the trouble of calculating the installation position of the hinge in the section, and makes it easy to install the door. In addition, since the third hinge serves as a fulcrum for the rotation of the door, the rotation of the door can be made the same both in the upper and lower directions, so accurate correction of the lowering of the door using the fourth hinge located at the bottom is accurate. It can be carried out.

  (3) According to the invention described in claim 3, even if the opening / closing door falls, the screw member is loosened to create a gap between the opening / closing door end surface and the hinge body, and a spacer or the like is inserted into the gap to lower the opening / closing door. Since it can be corrected, in addition to the above (1) and (2), the lowering can be corrected in response to the lowering of the door due to aging, etc., and the life of the door can be increased. it can.

  (4) According to the invention described in claim 4, when it is not necessary to correct the lowering of the door, the head of the screw member can be hidden from the outside. A clean appearance can be given as a whole, and the aesthetics can be improved.

  Hereinafter, the best mode of the present invention will be described in detail with reference to the accompanying drawings. Here, the case where the support structure of the door according to the present invention is applied to a cool box having a double door opening / closing door will be described.

  As shown in FIGS. 1 and 2, the cool box has at least three or more hinges 3 a and 3 b (in FIG. 1, four cases are shown) in the opening 2 provided in the box 1. , 3c, 3d, a double door opening / closing door 4 that can be opened and closed is provided.

  The opening 2 is formed by a cabinet panel 5 constituting the cabinet 1, and an entrance frame 6 for fixing the hinges 3 a, 3 b, 3 c, 3 d is provided at the opening side edge of the cabinet panel 5. It is attached.

  The cabinet panel 5 includes a pair of aluminum alloy surface plates 5a, a synthetic resin panel frame member 5b mounted between the side portions of both surface plates 5a, and the surface plate 5a and the panel frame member 5b. It is comprised with the heat insulating material 5c made from a polyurethane foam etc. with which the space formed is filled.

  Further, as shown in FIG. 2, the opening / closing door 4 includes a flange portion 4 a formed so as to face the opening edge portion of the opening portion 2, and an inside heat insulation formed so as to protrude into the opening portion 2. It is formed in a cross-sectional convex shape having a thick portion 4b. That is, the open / close door 4 is stretched on a frame body 4d having a stepped portion 4c corresponding to a corner portion of the inlet frame 6 attached to the opening 2, and on the inside and outside of the box body of the frame body 4d. For example, it is mainly configured by surface plates 4e and 4f made of aluminum alloy, and a heat insulating material 4g made of, for example, polyurethane foam filled in a space formed by the frame body 4d and the surface plates 4e and 4f. A synthetic rubber packing 4 h is provided on the inner peripheral edge of the opening / closing door 4 to seal the space between the outer frame 6 b of the inlet frame 6.

  The inlet frame 6 is formed in a substantially L-shaped cross section made of foamed synthetic resin, for example, foamed ABS resin, which is attached to the opening side edge of the container panel 5, that is, the opening side end surface and the outer end surface connected to the opening side end surface. ing.

  In this case, the entrance frame 6 includes an opening-side piece 6a that abuts the opening-side end surface of the container panel 5, and an outer piece 6b that is connected to one end of the opening-side piece 6a. A heater wire arranging groove portion 7 having two heater wire arranging grooves 7a and cap fitting grooves 7b located on both sides thereof is provided. Further, the outer piece 6b of the entrance frame 6 is provided with a concave groove 6c on the side surface of the cabinet panel, and a reinforcing member having a substantially U-shaped cross section formed by an extruded shape member made of, for example, aluminum alloy in the concave groove 6c. The member 6d is inserted.

  In the state where the heater wire H is disposed (wired) in the heater wire disposition groove 7a of the heater wire disposition groove portion 7 in the inlet frame 6 configured as described above, the cap member is placed in the cap fitting groove 7b. 8 is fitted (attached) to blind the heater wire H from the outside.

  The cap member 8 is formed of an extruded shape made of an aluminum alloy, is formed in a substantially U-shaped cross section having a pair of leg pieces 8b at both ends of the strip-shaped base piece 8a, and each leg piece 8b includes a heater. A bending engagement portion 8c is provided to engage with an inward locking projection 7c provided in the cap fitting groove 7b of the line arranging groove portion 7 (see FIG. 3).

  The cap member 8 configured as described above has the leg pieces 8b inserted into the cap fitting grooves 7b of the heater wire arranging grooves 7, whereby the leg pieces 8b are elastically deformed and the bent engaging portions 8c are caps. It is attached to the heater wire arranging groove portion 7 in a state of being engaged with the inwardly engaging projection 7c of the fitting groove 7b.

  On the other hand, among the hinges 3a, 3b, 3c, 3d, the first hinge 3a is installed at the upper end of the opening 2, and the second hinge 3b is spaced from the first hinge 3a by an interval 9a. The third hinge 3c is placed below the second hinge 3b with a gap 9b larger than the gap 9a and at the center of the height of the opening 2, and the fourth hinge 3d is A gap 9c larger than the gap 9b is provided below the third hinge 3c and is installed at the lower end of the opening 2.

  As described above, the installation intervals 9a, 9b, 9c of the first to fourth hinges 3a, 3b, 3c, 3d are formed so as to become narrower toward the upper side of the opening 2, that is, 9a <9b <9c. By doing so, the tension (tensile load) that is applied to the upper part of the opening 2 and causes the door 4 to be lowered can be received by the hinges 3a, 3b, 3c, 3d. In particular, at the upper end of the opening 2 where the tension (tensile load) that causes the door 4 to descend is the largest, the first hinge 3a installed at the upper end of the opening 2 and directly below the first hinge 3a. It can be received by the two hinges of the second hinge 3b installed at the position (position separated by the interval 9a).

  In the hinges 3a, 3b, 3c, 3d, at least the fourth hinge 3d located at the lower end of the opening 2 is configured as follows. That is, these hinges 3a, 3b, 3c, 3d (represented by the fourth hinge 3d below), as shown in FIGS. 2, 4, and 5, are hinge seats 10 fixed to the box side, A hinge body 20 is pivotally attached to the hinge seat 10 with a pivot pin 30 so as to be pivotable. The hinge body 20 is opened and closed by a fixing bolt 40 which is a screw member penetrating the hinge body 20. It is fixed to the end face. The head 40 a of the fixing bolt 40 exposed to the outside is blinded from the outside by a hinge cover 50 that is detachably attached to the hinge body 20.

  In this case, the hinge seat 10 is made of, for example, an aluminum die-cast member, and as shown in FIG. 5, a cross-sectional substantially semi-cylindrical receiving portion 12 having a vertical receiving hole 11, The vertical piece 13 includes a vertical piece 13 standing on one side of the receiving portion 12, and three through holes 14 are formed in the vertical piece 13 at appropriate intervals in the vertical direction. The hinge seat 10 is fixed to the inlet frame 6 of the cabinet panel 5 by screwing the fixing bolt 40A passing through the through holes 14 into the outer piece 6b of the inlet frame 6 of the cabinet panel 5 and the reinforcing member 6d. (See FIG. 2).

  Further, the hinge main body 20 is formed of, for example, a member made of aluminum die cast, similar to the hinge receiving seat 10, and is substantially the same as the receiving portion 12 at the upper and lower ends of the vertical base portion 21, as shown in FIG. A bulging upper part 22 having a similar contour and a stepped bulging lower part 23 are provided, and the stepped bulging lower part 23 is formed in a vertical direction, and a pin insertion hole 24 having a concave groove 24a is formed in the opposing inner surface. It is installed. Further, three guide elongated holes 25 extending in the horizontal direction (horizontal direction) are formed between the bulging upper portion 22 and the stepped bulging lower portion 23 in the vertical base portion 21 at appropriate intervals. On the other surface, there are provided concavo-convex strips 26a parallel to each other in the vertical direction. Moreover, the latching step part 27 is provided in the up-and-down position of the both sides | surfaces of the hinge main body 20, The hinge cover 50 mentioned later is engaged with these latching step parts 27 so that attachment or detachment is possible. .

  The hinge body 20 formed as described above is attached to the hinge seat 10 by a pin insertion hole 24 provided in the hinge body and a pivot pin 30 inserted into the receiving hole 11 provided in the hinge seat 10. On the other hand, it is pivotally attached. In this case, the pivot pin 30 is formed by a stepped pin having a flange portion 31, and the upper shaft portion 32 projecting a pair of keys 32 a located above the flange portion 31 is a pin of the hinge body 20. The lower shaft portion 33 fitted into the insertion hole 24 and below the flange portion 31 is inserted into the receiving hole 11 of the hinge seat 10 via a synthetic resin sleeve 34 having a high self-lubricating property.

  The hinge body 20 is fixed to the end face of the open / close door 4 so that the position can be adjusted. That is, as shown in FIGS. 4 and 5, the three through holes 62 that have the concave and convex strips 61 a meshing with the concave and convex strips 26 a provided in the hinge body 20 on one side and can match the guide long holes 25. In a state where the concave and convex strips 61a of the seat plate 60 made of, for example, aluminum die cast are engaged with the concave and convex strips 26a provided on the hinge body 20 and the through holes 62 are aligned with the guide long holes 25, the through holes 62 The hinge body 20 is fixed to the open / close door 4 by screwing a fixing bolt 40 penetrating the guide long hole 25 into a nut 41 embedded in the end face of the open / close door 4. In this case, when the door 4 is lowered due to use over time, the fixing bolt 40 is loosened to create a gap between the hinge body 20 and the opening / closing door 4, and the fixing bolt 40 can be loosely fitted in this gap. By inserting the spacer 28 having the notch 28a, the lowering of the open / close door 4 can be corrected. Alternatively, several types of spacers 28 having different thicknesses may be prepared, and the lowering of the opening / closing door 4 may be corrected by replacing the spacer 28 when the opening / closing door 4 has been lowered due to aging.

  When the lowering of the opening / closing door 4 is corrected, since the third hinge 3c is at the center of the height of the opening / closing door 4, the rotation at the lower end of the opening / closing door 4 can be accurately reflected on the upper end of the door. In other words, since the downward correction of the open / close door 4 performed by the fourth hinge 3d positioned at the lower end of the opening 2 is accurately reflected on the upper end of the door, the downward correction of the open / close door 4 can be performed extremely easily and accurately. .

  As described above, the hinge body 20 is fixed to the end surface portion of the door 4 with the fixing bolt 40, and then the hinge cover 50 is engaged with the locking step portion 27 provided on the hinge body 20, so that the head of the fixing bolt 40 is engaged. The part is blindfolded from the outside. In this case, the hinge cover 50 includes a cover main body 51 having a substantially U-shaped cross section obtained by bending a stainless steel belt-shaped plate member, and an opening piece extending at both ends of the cover main body 51 and having tip portions inclined toward each other. 52 and a locking claw portion 53 bent inward from the upper and lower ends of the opening piece 52. In order to attach the hinge cover 50 formed in this way to the hinge main body 20, the locking claw portions 53 provided on both opening pieces 52 of the hinge cover 50 are used as the locking step portions 27 provided on the hinge main body 20. And snap engagement. Moreover, when removing the hinge cover 50, both the opening pieces 52 can be spread outward and the engagement with the locking step 27 can be released.

  In the above description, the fourth hinge 3d positioned at the lower end of the opening 2 has been described. However, the other first to third hinges 3b, 3c, 3d can be similarly configured.

  In addition, in the summing part of both the doors 4, a lock receiving seat 71 is attached to one door 4 (left side in FIG. 1), and a lock receiving seat is attached to the other door 4 (right side in FIG. 1). An interlocking handle 72 that is engaged with 71 is removably attached. In addition, a lock lever 74 that is detachably engaged with a lock receiving seat 73 that is attached to the entrance frame 7 at the upper part of the opening 2 is attached to the upper part of one of the doors 4 (left side in FIG. 1). . In addition, a shift packing 75 that closes the gap between the door 4 and the floor F is suspended from the lower ends of the doors 4.

  In the above-described embodiment, the cool box having the double door opening / closing door 4 has been described. Needless to say, the cool box having a single door opening / closing door or a refrigerator other than the cool box can be applied.

It is a front view which shows the opening-and-closing door of the cool box which applied the support structure which concerns on this invention. It is sectional drawing which shows the support structure of an opening-and-closing door. It is an expanded sectional view which shows the groove part for heater wire arrangement | positioning and the cap member of the entrance frame attached to the opening part in this invention. It is an expanded sectional view which shows the attachment state to the opening-and-closing door of the hinge in this invention. It is a disassembled perspective view which shows the hinge in this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Housing | casing body 2 Opening part 3a, 3b, 3c, 3d The 1st thru | or 4th hinge 4 Opening / closing door 5 Housing | casing body panel 9a The space | interval 9b of the 1st hinge 3a and the 2nd hinge 3b 2nd hinge 3b and 3rd The distance 9c between the third hinge 3c and the fourth hinge 3d 10 The hinge seat 20 The hinge body 27 The locking step 28 The spacer 30 The pivot pin 40 The fixing bolt (screw member)
50 Hinge cover 53 Locking claw

Claims (4)

It is a support structure for an open / close door that opens and closes an opening provided in a cabinet,
At least three or more hinges that pivotably connect the opening and the opening / closing door to the opening edge of the opening,
An opening / closing door support structure, characterized in that an installation interval of the plurality of hinges is formed narrower toward an upper side of the opening. In the support structure of the opening-and-closing door of Claim 1,
Installing a first hinge at the upper end of the opening;
Installing a second hinge directly below the first hinge;
Install the third hinge at the center of the height of the opening,
A support structure for an opening / closing door, wherein a fourth hinge is installed at the lower end of the opening. In the support structure of the door according to claim 1 or 2,
The hinge located at least at the lower end of the opening among the plurality of hinges includes a hinge seat fixed to the housing side, and a hinge body pivotally attached to the hinge seat with a pivot pin. And the hinge body is fixed to an end face of the door by a screw member penetrating the hinge body. In the supporting structure of the door according to claim 3,
An opening / closing door support structure, wherein the head of the screw member in the hinge body is covered with a hinge cover attached to the hinge body.

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