JP5982617B2 - Cooling storage - Google Patents

Description

  The present invention relates to a cooling storehouse having an improved seal structure for an opening.

  As an example of a conventional prefabricated refrigerator, one described in Patent Document 1 below is known. In this case, a box-shaped storage body is formed by assembling a plurality of heat insulation panels, and an opening for the entrance is formed on the front surface of the storage body, and a sliding door for opening and closing the opening is provided. It has been. For example, the sliding door is opened and closed while rolling the wheel provided on the upper edge of the wheel on the rail arranged along the upper edge of the opening, and when the door is fully closed, the wheel is a recess provided in the rail. The slide door approaches the storage body side by being dropped into the storage door, and sealing is performed by bringing the packing attached to the peripheral edge of the back surface of the slide door into close contact with the mouth edge on the front surface side of the opening. .

JP 2007-113885 A

In this type of prefabricated refrigerator, the sliding door may be deformed to warp due to, for example, a temperature difference inside or outside the chamber or a change in atmospheric pressure inside the chamber. There was a possibility that the packing mounted on the back surface of the opening would be separated from the mouth edge on the front surface side of the opening to create a gap and the sealing performance could be impaired.
The present invention has been completed based on the above-described circumstances, and its purpose is to ensure that the packing can be securely adhered even when the door is warped or the like is deformed. There is a place to do.

  The present invention includes a storage body having an opening on a peripheral wall, and a door that opens and closes the opening, and a cooling storage in which a packing is attached to the peripheral edge of the back surface of the door. A packing body that elastically adheres and seals to the front edge of the part, and a holding groove that is formed on the surface of the packing body that faces the back surface of the door and is formed on the peripheral edge of the back surface of the door A holding portion that is fitted to the packing body in a state where the holding portion is opposed to the back surface of the door of the packing body. The fin portion is characterized by projecting in the same direction as the projecting direction of the holding portion, and a push-up member capable of elastically increasing and decreasing the volume is provided inside each back fin portion.

When the door is closed, the packing body of the packing mounted on the back surface of the door is in close contact with the lip on the front side of the opening in a form in which the back fin is bent and the push-up member is elastically crushed. And the seal is taken. At the time of closing the door, if the door is warped or the like, and the packing body tries to move away from the mouth edge on the surface side of the opening, the push-up member elastically expands and the packing body is moved to the opening. It is brought into close contact by being pushed up toward the mouth edge on the surface side, and the sealed state is maintained.
That is, even if the packing body of the packing is going to be separated from the opening edge on the surface side of the opening due to deformation of the door, etc., the packing body is moved to the surface side of the opening by the elastic volume expansion of the push-up member. Sealed in close contact with the lip. Since the push-up member is arranged inside the back fin portion, in other words, it is hidden by the back fin portion, it looks good.

The following configuration may also be used.
(1) A pair of front fins project from both sides in the width direction on a surface of the packing body that faces the mouth edge on the surface side of the opening in the packing body.
When the door is closed, the surface of the packing main body is brought into close contact with the rim portion on the surface side of the opening while bending the front fin portion. When the door is warped, etc., and the packing body tries to move away from the opening edge on the surface side of the opening, the front fin part returns to the straight posture while the front clearance is small. It adheres closely to the mouth edge on the surface side of the opening. When the separation amount is increased, a pair of front fins provided on both sides in the width direction on the surface of the packing body are pushed up with the elastic volume expansion of the push-up member, and the tips thereof are on the surface side of the opening. By closely adhering to the mouth edge, the sealed state is continuously maintained.

(2) The sliding door is opened and closed by moving in parallel with the opening.
If the push-up member or fin part is highly rigid, the packing body will be firmly pressed against the front edge of the opening when there is no deformation in the door, especially for sliding doors. Have a large frictional resistance at the beginning of the opening operation, etc., and the opening / closing operation of the door becomes heavy.
In this respect, the push-up member and the back fin portion are inferior in rigidity, so that the packing body is not pressed more firmly than necessary to the rim on the surface side of the opening, and an increase in frictional resistance is avoided. Thus, a smooth opening / closing operation of the sliding door is ensured.

  According to the present invention, even when the door is deformed, for example, the door is warped, the seal can be taken with the packing securely attached.

1 is an external perspective view of a prefabricated refrigerator-freezer according to an embodiment of the present invention. Cross section of packing Partial plan view of the sliding door in the fully closed state Partial enlarged view of FIG. Partial cross-sectional view showing the shape correction state of the packing Partial enlarged view of FIG.

<Embodiment>
An embodiment of the present invention will be described with reference to FIGS. In this embodiment, a prefabricated refrigerator-freezer is illustrated.
In FIG. 1, the code | symbol 10 is a storage main body, Comprising: The square heat insulation box which assembled | attached the several heat insulation panel 11 is comprised. As shown in FIG. 3, a window hole 12 is formed over almost the entire height of the front wall 10 </ b> A in the front wall 10 </ b> A of the storage body 10, and an opening frame 14 made of synthetic resin is formed in the window hole 12. Is inserted. A flange 15 is formed over the entire periphery of the opening frame 14 on the surface side, and the flange 15 is disposed so as to cover the hole edge on the surface side of the window hole 12. The opening in the frame of the opening frame 14 corresponds to the opening 16 of the present invention, and the flange 15 corresponds to the rim 17 on the surface side of the opening 16.

  A heat-insulating slide door 30 that opens and closes the opening 16 is disposed on the front surface of the storage body 10. A handle 31 for opening and closing the slide door 30 is provided on the right edge of the surface of the slide door 30. As will be described in detail later, a packing 50 is attached to the periphery of the rear surface of the slide door 30 so as to abut against the mouth edge 17 of the opening 16 and seal the opening 16.

The opening / closing structure of the slide door 30 will be briefly described. A rail is mounted on the front surface of the storage body 10 along the upper edge of the opening 16 over almost the entire width. A pair of wheels provided in the section are supported by suspension. In addition, since the arrangement | positioning part of a rail is covered with the cover 32, a rail, a wheel, etc. are not illustrated.
The sliding door 30 is opened and closed while rolling the upper edge wheel on the rail. When the sliding door 30 is fully closed, the sliding door 30 approaches the storage body 10 side by dropping the wheel into a recess provided on the rail. The packing 50 on the back surface of the slide door 30 is sealed by being brought into close contact with the mouth edge portion 17 on the front surface side of the opening 16.
In addition, the guide 33 provided at the lower edge of the slide door 30 sandwiches the roller 35 provided on the lower substrate 34, so that the lower end side is restricted from flapping when the slide door 30 is opened and closed. Yes.

Next, the packing 50 and its mounting structure will be described in detail.
The slide door 30 has a rectangular shape in front view that is slightly larger than the opening 16 described above, and is formed in a stepped shape in which the central portion of the back surface bulges as shown in FIG. More specifically, a metal plate exterior panel 41 constituting the entire front surface and the four side surfaces and a metal plate interior panel 42 constituting the back bulge surface are disposed with a gap therebetween, and both panels 41 are arranged. , 42, a synthetic resin frame body 43 constituting the peripheral edge of the back surface is fitted and connected to form the outer shell body 40, and the outer shell body 40 is made of foamed resin. The sliding door 30 is formed by foaming and filling the heat insulating material 44 to be formed.

The surface of the frame body 43 constituting the peripheral edge of the back surface of the sliding door 30 is the mounting surface 45 of the packing 50, and is held at a position slightly outside the center width position on the mounting surface 45. A groove 47 is formed over the entire circumference.
On the other hand, the base end portion of the mouth edge portion 17 (the surface of the flange 15) on the surface side of the opening portion 16 is a close contact surface 20 of the packing 50. A heater mounting groove 21 is formed in the contact surface 20 and a heater 22 such as a cord heater is mounted. A heater cover 24 made of synthetic resin is attached to the heater mounting groove 21 flush with the contact surface 20. ing.

The packing 50 is formed by extrusion molding of a rubber material, and as shown in FIG. 2, the packing 50 elastically adheres and seals to the contact surface 20 (heater cover 24) of the rim 17 on the surface side of the opening 16. It is comprised from the main body 51 and the arrowhead part 52 (holding part) protruded and formed in the surface facing the back surface of the slide door 30 in the packing main body 51. As shown in FIG.
The packing body 51 has a cross-sectional shape in which both ends of a circular arc portion 53 larger than a semicircle are connected by a base portion 54 that forms a gentle mountain shape and protrudes in the same direction, and the base portion 54 is slightly thicker than the circular arc portion 53. It is formed in meat.

Inside the packing main body 51, a partition wall 55 that is bent so as to extend between the center portions of the arc portion 53 and the base portion 54 is formed, and two air chambers 56 are formed on both sides of the partition wall 55.
In addition, a pair of front fin portions 57 are formed to protrude in parallel with each other on both sides in the width direction on the arc surface 53A facing the contact surface 20 of the rim 17 of the opening 16 in the packing body 51. Yes. The protruding end of the front fin portion 57 is at a position protruding by a predetermined dimension from the most protruding position of the arc surface 53A.
From the back surface of the top of the mountain in the base portion 54 of the packing body 51, the above-described arrowhead portion 52 is formed to protrude.

In the packing 50, the arrowhead portion 52 is inserted into the holding groove 47 of the frame body 43 that forms the peripheral edge of the back surface of the slide door 30, and both hems are formed in the locking portion 48 formed at the opening edge of the holding groove 47. By being locked, it is prevented from being detached.
When the sliding door 30 is normally fully closed, as shown in FIG. 3, the packing 50 is elastically deformed on both front fin portions 57, while the most protruding surface of the arc portion 53 is slightly elastic. It is set so as to be in close contact with the heater cover 24 provided on the close contact surface 20 of the rim 17 of the opening 16.

Now, in the present embodiment, a pair of elastic fin portions 60 having elasticity are formed so as to protrude from both ends of the base portion 54 of the packing 50 in the same direction as the protruding direction of the arrowhead portion 52. However, the back fin portions 60 are short and have a protruding length that is only about the thickness of the base portion 54, and are formed in a form in which protruding ends are slightly opened outward.
Further, as shown in FIG. 5, a double-sided tape 65 having elasticity (corresponding to the push-up member of the present invention) between the arrowhead portion 52 and each back fin portion 60 on the back surface of the base portion 54 of the packing body 51, as shown in FIG. Is installed. The thickness of the double-sided tape 65 is a little more than half the thickness of the base 54.

  The operation of this embodiment will be described. In order to mount the packing 50 on the mounting surface 45 provided on the peripheral edge of the back surface of the slide door 30, first, one surface of the double-sided tape 65 is attached to both sides of the arrowhead portion 52 on the back surface of the base portion 54 of the packing body 51. When the arrowhead portion 52 of the packing 50 is pushed into the holding groove 47 formed on the mounting surface 45 from this state, the arrowhead portion 52 is prevented from coming off and the other surface of each double-sided tape 65 is attached to the mounting surface 45. By being attached to the regions on both sides of the holding groove 47, the packing 50 is mounted in a form in which a double-sided tape 65 is disposed inside each back fin portion 60 as shown in FIG.

When the sliding door 30 is fully closed in a state where the normal shape is maintained, as shown in FIGS. 3 and 4, the packing 50 mounted on the mounting surface 45 on the back surface of the sliding door 30 has almost no back fin portion 60. In the form in which the double-sided tape 65 is bent to open sideways and the double-sided tape 65 is elastically crushed, the most protruding portion of the arcuate surface 53A of the packing body 51 is slightly elastic, and the mouth edge on the surface side of the opening 16 17 is closely attached to the heater cover 24 provided on the close contact surface 20, thereby sealing.
At the time of closing the door, if the sliding door 30 is deformed such as warping, and the packing main body 51 tries to move away from the close contact surface 20 of the mouth edge portion 17 on the surface side of the opening portion 16, the amount of separation is small. The front fin portion 57 is brought into close contact with the contact surface 20 while returning to the straight posture.

  If the amount of separation from the contact surface 20 of the packing body 51 is further increased due to the deformation of the slide door 30 or the like, as shown in FIG. 5 and FIG. A pair of front fin portions 57 provided on both sides in the width direction on the surface (arc surface 53A) of the arc portion 53 of the packing body 51 are pushed up, and the tips thereof are in close contact with the edge portion 17 on the surface side of the opening portion 16. By closely adhering to 20, the sealing state is continuously maintained.

  According to the present embodiment, the packing body 51 of the packing 50 is separated from the close contact surface 20 of the lip 17 on the surface side of the opening 16 due to deformation of the slide door 30, and particularly the front fin portion 57. Even if it is going to leave the contact surface 20 to such an extent that the sealing state cannot be maintained, both front fin portions 57 are pushed up by the elastic restoring expansion of the double-sided tape 65, and the front ends thereof are the edge portions 17 on the surface side of the opening 16. By being in close contact with the close contact surface 20, the sealed state can be maintained. Since the double-sided tape 65 itself is disposed inside the back fin portion 60, in other words, is hidden by the back fin portion 60, the appearance is good.

If the double-sided tape 65 and the back fin portion 60 have high rigidity, the packing main body 51 is firmly pressed against the contact surface 20 of the lip 17 on the surface side of the opening 16 when the sliding door 30 is not deformed. Therefore, in the case of the slide door 30 as in the present embodiment, the sliding door 30 is subjected to a large frictional resistance at the beginning of the opening operation, and the opening / closing operation of the sliding door 30 becomes heavy. .
In this respect, in this embodiment, since the double-sided tape 65 and the back fin portion 60 are inferior in rigidity, it is possible to press the packing body 51 more firmly than necessary to the contact surface 20 of the rim portion 17 on the surface side of the opening 16. Thus, an increase in frictional resistance is avoided, and a smooth opening / closing operation of the sliding door 30 is ensured.

In addition, the double-sided tape 65 is attached only to a range where the deformation such as warpage of the slide door 30 is large (near the center of the vertical side), and it is refrained from being applied to a portion where the warp is small (near the corner). The pressing force to the mouth edge 17 on the surface side of the 50 openings 16 can be made uniform over the entire circumference so as not to become partially larger than necessary.
Further, the double-sided tape 65 may not be applied from the beginning when the prefabricated refrigerator-freezer is shipped, but may be applied later to a necessary portion when warping occurs.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) The push-up member is not limited to the double-sided tape exemplified in the above embodiment, but may be a sponge or the like as long as it can elastically increase and decrease in volume.
(2) The packing may have a shape that does not have a front fin portion, and the present invention can be similarly applied to such a packing.
(3) In the above-described embodiment, the opening formed on one side surface of the storage body has a structure having four peripheral edges, but the opening has a structure in which the lower edge is opened, and the upper edge and the left and right The present invention can be similarly applied to a type in which packing provided on the back surface of the sliding door is in close contact with only the front edge portion of the side edge.

(4) In the above-described embodiment, the slide door is exemplified as the door for opening and closing the opening. However, the door may be a swinging door, and the present invention can be applied to such a door.
(5) The present invention is not limited to the prefabricated cooling storage illustrated in the above-described embodiment. In short, a storage body having an opening on the peripheral wall and a door for opening and closing the opening are provided, and the peripheral edge of the back surface of the door The present invention can be widely applied to all types of cooling storages in which the packing attached to the part is closely attached to the mouth edge of the opening and sealed.

  DESCRIPTION OF SYMBOLS 10 ... Storage body 10A ... Front wall (peripheral wall) 16 ... Opening part 17 ... Mouth edge part (on the surface side of the opening part 16) 20 ... Adhesion surface 30 ... Sliding door (door) 43 ... (Rear edge of the back surface of the sliding door 30) Frame 45 ... mounting surface 47 ... holding groove 50 ... packing 51 ... packing body 52 ... arrowhead (holding portion) 53 ... arc portion 53A ... arc surface (surface facing the contact surface 20 of arc portion 53) 54 ... Base 57 ... Front fin part 60 ... Back fin part 65 ... Double-sided tape (push-up member)

Claims (3)

In the cooling storage with a storage body having an opening on the peripheral wall and a door for opening and closing the opening, and a packing attached to the peripheral edge of the back of the door,
The packing includes a packing body for sealing elastically close contact with the rim of the front surface side of the opening, the rear surface of the periphery of the protruding said door surface facing the rear surface of the door in the same packing body is composed of a holding portion in fitted Ru form is retained to form retention groove in parts is mounted on the periphery of the rear surface of the door,
On both side edges in the width direction across the holding portion on the facing surface , a pair of elastic back fin portions are formed to protrude in the same direction as the protruding direction of the holding portion,
Wherein the inner side of the back fin, but may be resiliently volume increases or decreases, cooling storage, wherein a member pushed up in a manner interposed between the back surface of the facing surface the door is provided . 2. The pair of front fins projectingly formed on both sides in the width direction on a surface of the packing main body facing the mouth edge on the surface side of the opening. Cooling storage. The cooling storage according to claim 1, wherein the door is a sliding door that is opened and closed by moving in parallel with the opening.

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