JP3491738B2 - Door devices such as refrigerators - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door device for a refrigerator or the like, and more specifically, a guide rail horizontally arranged above an entrance opening of a refrigerator or the like. The present invention relates to a door device for a refrigerator or the like, which is mounted on an upper portion of a door body that opens and closes the entrance opening, and includes a suspension wheel that is rollably engaged with the guide rail.

[0002]

2. Description of the Related Art Generally, a sliding type is widely used as a door opening / closing means for opening / closing an entrance opening of a refrigerator or the like. As this sliding type door device, a door device previously developed by the applicant is known (see Japanese Utility Model Laid-Open No. 2-55079). In the door device described in Japanese Utility Model Laid-Open No. 2-55079, a suspension wheel is guided downward to the storage body side to a position where a suspension wheel is located when the door body is closed in a guide rail formed to have a substantially inverted cross section. This is formed by forming a recess, and the door body is dropped into the recess formed in the guide rail so as to be hermetically sealed to the storage body side. Further, as another door device, as shown in FIG. 14, the guide rail a is bent toward the housing b side of the refrigerator or the like, and the suspension wheel c is moved to the bent portion d of the guide rail a, so that the door is closed. Body e is a storage b
It is known to press to the side and seal.

[0003]

However, in the former, that is, in the door device described in Japanese Utility Model Laid-Open No. 2-55079, since a recess is formed by notching a part of one guide rail, the recess of the recess is not formed. Positioning and processing are time-consuming and the strength of the guide rail must be taken into consideration.
Further, when the door body is opened, it is necessary to lift the suspension wheel from the recess and move the suspension wheel onto the guide rail. Therefore, it takes labor and time to open the door body. Therefore, a door opening / closing device for moving the suspension wheel onto the guide rail by using the lever principle or the like is used (see Japanese Utility Model Laid-Open No. 5-40568). However, the structure including such a door opening / closing device has a problem that the structure is complicated and the assembling of the door is troublesome. Further, in this opening / closing device, the door cannot be closed at the time of failure, and there is a possibility that the refrigerator cannot serve its function.

In the latter case, that is, in the case of forming a bent portion on the guide rail, the rail needs to be bent. Therefore, if the design specifications of the door are different, a design change is required each time and the processing is required. There was a problem that it took a lot of time and effort.

The present invention has been made in view of the above circumstances, and facilitates the opening and closing of the door body, facilitates the processing and mounting of the guide rail, and improves the strength of the door device of a refrigerator or the like. It is intended to provide.

[0006]

In order to achieve the above object, a door device for a refrigerator or the like of the present invention is constructed as follows.

(1) The invention according to claim 1 includes a guide rail arranged horizontally above an entrance opening of a refrigerator or the like, and a door body for opening and closing the entrance opening. In a door device for a refrigerator or the like, which is mounted on an upper portion and includes a suspension wheel that engages with the guide rail in a rollable manner, one or a plurality of guide rails in which at least a rail surface is raised in an inverted V-shape in cross section. Rail base and at least the rail surface connected to this rail base are raised in an inverted V-shape in cross section.
; And a piece shaped guide member that, the rail surface of the guide member, thereby forming at the same height as the rail surface of the rail base, formed by bent formed into an arc shape toward the chamber side, that Is characterized by.

With this configuration, the rail base that forms the guide rail and the rail surface of the guide member are at the same height, and the rail surface of the guide member faces the storage body side.
Since it is bent in an arc shape , the door can be easily opened and closed with a small force. Also, since the rail base and the guide member are formed separately, the function of the guide rail can be designed separately, and the closing position of the door can be easily changed, so that the door can be easily assembled. Can be

(2) The invention according to claim 2 is the invention according to claim 1.
In the door device of the refrigerator or the like described, the rail base portion and the guide member are placed and fixed on a rail mounting member that is longitudinally arranged on the upper side of the entrance opening of the storage case ,
Mount the rail mounting member on the rail base and the guide member.
A holding part to be placed and extending from one end of the holding part in an inclined shape
Vertical part that connects to the tip of the inclined part
Connected to the mounting part and the lower end of the mounting part and the lower part of the inclined part.
Formed from extruded aluminum material that consists of
The feature is that

With this configuration, the rail base and the guide member, which are designed to have different guide rail functions, are mounted and fixed on the straight rail mounting member that maintains strength. The degree of freedom and processing can be facilitated and the strength can be improved.

(3) The invention of claim 3 is the same as claim 1
In the door device of the refrigerator or the like described, in the lower end surface of the door body, a concave groove portion is formed along the moving direction of the door body, and the concave groove portion and the floor portion in the vicinity of the entrance / exit opening of the cabinet are opposed to each other. Between the surfaces to be provided, a sealing movement means for engaging with each other when the door body is in a closed state and pressing the door body to the sealed position of the storage body is provided .
The sealing moving means is formed in both ends of the groove.
Guide groove and horizontal direction that engages with each guide groove
It is composed of a guide roller that can be rotated in any direction.
And

With this structure, when the door is closed, the door can be sealed in the housing, so that the airtightness of the entrance / exit opening can be maintained.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a door device for a refrigerator or the like according to the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an example of a door device according to the present invention, FIG. 2 is a sectional view showing a main part of the door device, and FIG.
FIG. 4 is an enlarged view of an essential part of FIG. 4, and FIG. 4 is a side view of FIG.

The above-mentioned door device is a cabinet 1 of a prefabricated refrigerator.
A guide rail 3 horizontally arranged on an upper side of an entrance / exit opening 2 (hereinafter referred to as an opening 2) opened in the vehicle, and a rail mounting member 4 for linearly placing and fixing the guide rail 3. A suspension wheel 7 mounted on a top end of a door body 5 for opening and closing the opening 2 (shown in the case of single opening in the drawing) via a bracket 6 and rolling on a guide rail 3, and closing of the door body 5. It mainly consists of the lower surface of the door body 5 and the hermetically moving means 10 arranged on the opposing surfaces of the fixed side surfaces of the floor portion 8 at the time.

At the upper end of the opening 2, there is provided an endless cord or chain 23 which is suspended between a drive sprocket 21 and a driven sprocket 22 driven by a drive motor 20 which is a drive means. The engagement piece 26, which is vertically moved by the operation portion 25 attached to the door body 5, is removably engaged with the chain lock 24 provided at an appropriate position of the chain 23, so that the door body 5 is automatically operated. Alternatively, it can be opened and closed manually.

The guide rail 3 is, as shown in FIG.
A plurality of plastic rail bases 31 (two in the drawing are shown) having a substantially rectangular cross section in which the rail surface 30 bulges in an inverted V shape in cross section, and a piece having a substantially rectangular cross section connected to the rail base 31. And a plastic-shaped guide member 32. In this case, the guide member 32 is the same as in FIG.
As shown in FIG. 8 to FIG. 8, a bent portion 33 that is bent in an arc shape toward the housing 1 side is formed, and the rail surface 30 is
The rail base 31 is assembled (connected) so as to have the same height as the rail surface 30.

Although only one guide member 32 is shown in FIG. 5, this guide member 32 is not shown in FIG.
Two are provided so as to correspond to the suspension wheels 7 attached to both ends of the upper part of the. Further, the rail base 31 and the guide member 32 do not necessarily have a rectangular cross section as long as the rail surface 30 bulges at least in an inverted V shape in cross section.

The rail base 31 and the guide member 32 configured as described above are mounted on the rail mounting member 4 which is mounted on the housing 1 by the mounting bolts 41, and are fixed by the fixing bolts 34. In this case, as shown in FIGS. 3 and 5, the rail mounting member 4 has a holding portion 42 having a V-shaped cross section on which the rail base 31 and the guide member 32 are mounted, and an inclined shape from one end of the holding portion 42. An inclined part 43 extending in the vertical direction, a vertical attachment part 44 connected to the tip of the inclined part 43 in an intersecting manner, and a reinforcement part 45 connected to the lower end of the attachment part 44 and the lower part of the inclined part 43. It is made of extruded aluminum.

The rail mounting member 4 thus formed
Mount the rail base 31 and the guide member 32 on the holding portion 42 in a state of being connected to each other, and fix the rail base 31 and the guide member 32 by screwing a fixing bolt 34 from the outside of the holding portion 42. You can Then, with the mounting portion 44 in contact with the mounting surface of the housing 1, the mounting bolt 41 can be fixed by passing through the mounting hole 44a provided in the mounting portion 44 and screwed into the housing 1. it can.

Therefore, since the connecting position of the rail base 31 and the guide member 32 can be appropriately changed corresponding to the closed position of the door body 5, the guide rail 3 can be easily processed and the guide rail 3 can be easily guided. The rail 3 and the door body 5 can be easily assembled.

A stopper member 50 of the door body 5 is attached to the end of the rail attachment member 4 (see FIGS. 4 and 5). The stopper member 50 is composed of a bracket 52 attached to the rail attachment member 4 with an attachment bolt 51, and a stopper piece 54 made of synthetic rubber fixed to a hanging portion 52a of the bracket 52 with a set screw 53. Further, on the door contact surface of the door body 5,
A stopper piece 55 made of synthetic rubber that collides with the stopper piece 54 of the stopper member 50 is attached by a set screw 56 (see FIG. 4).

The suspension wheel 7 has a V-shaped groove 7a corresponding to the inverted V-shape of the rail surface 30 of the guide rail 3, and is L-shaped fixed to the upper end of the door body 5. Support bolt 6 attached to the vertical piece 61 of the bracket 6 of
2 and a supporting nut 63 so as to be vertically rotatable (see FIGS. 3 and 4). Therefore, the suspension wheel 7 is connected to the guide rail 3 (specifically, the rail base 31
And the guide member 32) can be rolled over smoothly, and the guide member 32 of the guide rail 3 can be sealed when closed.
It can be smoothly moved to the closed position along the bent portion 33. That is, as shown in FIG. 9, the suspension wheel 7 moves along the bent portion 33 of the guide member 32 at the same height as the rolling state of the rail base 31 to move the door body 5 to the storage body 1 side. Can be pressed.

The door 5 has a base portion between a pair of metal surface plates 5a, and a heat insulating core material 5b such as polyurethane foam.
It has a sandwich structure filled with
Packing seats 71 that are in pressure contact with the packing 70 that is provided around the opening edge of the opening 2 on the upper side and the left and right sides of the storage body 1 side.
Are installed (see FIG. 2). A heater (not shown) for thawing and preventing condensation water is embedded at an appropriate position of the packing attachment portion of the container 1 and an appropriate position of the packing seat 71.

On the other hand, a recessed groove portion 11 is formed on the lower end surface of the door body 5 along the moving direction of the door body 5, and this recessed groove portion 11 and the floor portion near the opening for the entrance of the cabinet 1. Sealing moving means 10 that engages with each other between the surfaces facing each other when the door body 5 is closed and presses the door body 5 to the sealed position of the storage case 1.
Is provided. In this case, as shown in FIGS. 10 and 11, the hermetically-sealing means 10 is formed in both ends of the recessed groove portion 11 of the door body 5 so as to be offset from each other.
Guide grooves 12a, 12b and the guide grooves 12a, 1
It is composed of first and second guide rollers 13a and 13b which engage with 2b and are rotatable in the horizontal direction with a vertical shaft 15 described later as an axis. In this case,
The first guide groove 12a is biased toward the housing body 1 side, and the second guide groove 12b is biased at a position away from the housing body 1. In addition, the first and second guide rollers 13a, 1
3b is biased to a state corresponding to the first and second guide grooves 12a and 12b. In addition, the first and second guide rollers 13a and 13b, as shown in FIG.
In the upper part of a vertical shaft 15 standing upright in the center of a mounting plate 14 having a substantially hat-shaped cross section, which is fixed by a fixing screw (not shown), it is rotatably mounted via a bearing (not shown).

The hermetically moving means 10 formed as described above.
As shown in FIGS. 12A and 12B, the suspension wheel 7 rolls on the rail base 31 of the guide rail 3 in a state where the guide grooves 12a, 12b and the guide rollers 13a, 13b are not engaged. When running and the door body 5 moves to the closed position,
As described above, since the suspension wheel 7 rolls on the bent portion 33 of the guide member 32 of the guide rail 3, as shown in FIG. 12 (c), the first guide groove 12a has the first guide roller 13a. And the second guide groove 12b engages with the second guide roller 13b, and the door body 5 is brought into close contact with the periphery of the opening 2 of the storage case 1.

When the door body 5 is opened, when the door body 5 is moved to the open side, the suspension wheel 7 moves from the bent portion 33 of the guide member 32 to the rail base 31 side, and the door body 5 opens. After the contact state of the portion 2 is released, the suspension wheel 7 rolls on the rail base 31 and the door body 5 can be opened.

Therefore, since the door body 5 can be opened and closed while keeping the same height, the opening and closing operation can be easily performed. Further, since the door body 5 can be pressed toward the opening portion 2 side of the housing body 1 when the suspension wheel 7 moves onto the bent portion 33 of the guide member 32, the door body 5 can be reliably mounted on the housing body 1 side. Can be adhered to.

In the above embodiment, the hermetically moving means 1 is used.
First and second guide grooves 12a, 12b forming 0
The case where the first guide roller 13a and the second guide roller 13b are biased from each other has been described.
It is not necessary to deviate the first and second guide rollers 12a and 12b and the first and second guide rollers 13a and 13b from each other. For example, as shown in FIG. 13 (a) or (b),
In order to draw the two guide grooves and the guide rollers together by one set of the guide grooves and the guide rollers, for example, the second guide groove 12b and the second guide roller 13 are provided at the front end of the door 5 on the moving side.
b is formed and the first guide groove 12a and the first guide roller 13a are formed on the rear end side of the door body 5, or both guide grooves and the guide roller are pulled together more strongly so that It may be formed by the second guide groove 12b and the second guide roller 13b.

Further, in the above embodiment, the single-opening type door device has been described, but the door device of the present invention is not necessarily limited to the single-opening type door device, and is also applied to a double-opening type door device. Of course you can. In the case of the double-opening type, the guide member 32 may be provided on the guide rail 3 of each door 5 as described above.

In the above embodiment, the case where the opening and closing of the door body 5 is an electric type has been described, but it goes without saying that it can be applied to a case where it is a manual type.

[0032]

As described above, since the door device for a refrigerator or the like of the present invention is constructed as described above, the following effects can be obtained.

(1) According to the first aspect of the present invention, the rail base forming the guide rail and the rail surface of the guide member have the same height, and the rail surface of the guide member is located on the side of the storage case.
The door body can be easily opened and closed with a small force because it is bent in an arc shape toward the front . Further, since the rail base and the guide member are formed separately, the closed position of the door can be easily changed, and the assembling of the door can be facilitated.

(2) According to the second aspect of the invention, the rail base and the guide member, which are separately formed, are mounted and fixed on a straight rail mounting member, and the rail mounting member is fixed to the rail.
A holding portion for mounting the base portion and the guide member, and the holding portion
Intersect the slanted part that extends slanted from one end and the tip of the slanted part.
Vertical mounting part that connects in a staggered manner and the lower end of the mounting part and the slope
Aluminum consisting of a reinforcing part connected to the lower part of the part
Since it is formed of the extruded profile , the guide rail can be easily processed in addition to the above (1), and the strength of the guide rail can be improved.

(3) According to the invention described in claim 3, a recessed groove portion is formed in the lower end surface of the door body along the moving direction of the door body, and the recessed groove portion and the vicinity of the entrance / exit opening of the storage body are formed. When the door body is closed, the door body is closed when the door body is closed by providing sealing movement means that engages each other when the door body is closed and presses the door body to the closed position of the storage case. Since the container can be sealed in the container, the airtightness of the inlet / outlet opening can be more firmly maintained in addition to the above (1). Well
In addition, by forming the hermetically-sealed means by the guide grooves formed in both ends of the recessed groove portion of the door body and the horizontally rotatable guide rollers engaging with the guide grooves, respectively, It is possible to ensure the tightness of the container .

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a first embodiment of a door device for a refrigerator or the like of the present invention.

FIG. 2 is a cross-sectional view showing a main part of the door device.

FIG. 3 is an enlarged view showing a main part of FIG.

FIG. 4 is a side view of FIG.

FIG. 5 is a front view (a) showing a guide rail according to the present invention and a sectional view (b) taken along the line AA of (a).

FIG. 6 is a plan view (a) of the guide member according to the present invention,
It is sectional drawing (d) which follows a BB line of a front view (b), a side view (c), and (a).

FIG. 7 is a perspective view of the guide member.

FIG. 8 is a perspective view of the guide member seen from another angle.

FIG. 9 is a schematic plan view (a) and a schematic front view (b) showing the relationship between the guide member and the suspension wheel in the present invention.

FIG. 10 is a perspective view showing a guide groove which constitutes the hermetically moving means in the present invention.

FIG. 11 is a perspective view showing a guide roller which constitutes the hermetically moving means in the present invention.

FIG. 12 is a schematic plan view showing an example of an opened / closed state of a door body according to the present invention.

FIG. 13 is a schematic plan view showing another example of the opened / closed state of the door body according to the present invention.

FIG. 14 is a schematic plan view showing an example of a conventional door device.

[Explanation of symbols]

1 package 2 Door opening 3 guide rails 4 Rail mounting member 5 door body 6 bracket 7 hanging wheels 8 floors 10 Closed transportation means 11 groove 12a First guide groove 12b Second guide groove 13a First guide roller 13b Second guide roller 30 Rail surface 31 Rail base 32 Guide member 33 Bend

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) F25D 23/02 301

Claims (3)

(57) [Claims] 1. A guide rail which is horizontally arranged above an entrance opening of a refrigerator or the like, and a guide rail which is attached to an upper part of a door which opens and closes the entrance opening. In a door device for a refrigerator or the like, which is provided with a suspension wheel that engages in a rollable manner with respect to the guide rail, the guide rail has one or a plurality of rail bases whose rail surfaces are raised in an inverted V-shape in cross section, and the rail bases. At least the rail surface that is connected is raised in an inverted V-shaped cross section
; And a piece shaped guide member, the rail surfaces of the guide members, and forming at the same height as the rail surface of the rail base, toward the chamber side
A door device for a refrigerator or the like, which is formed by bending in an arc shape . 2. The door device for a refrigerator or the like according to claim 1, wherein the rail base portion and the guide member are mounted on a rail mounting member which is longitudinally arranged above an opening for an entrance of a cabinet. fixed becomes, the said rail mounting member, the mounting of the rail base and guide member
A holding part to be placed and extending from one end of the holding part in an inclined shape
Vertical part that connects to the tip of the inclined part
Connected to the mounting part and the lower end of the mounting part and the lower part of the inclined part.
Formed from extruded aluminum material that consists of
A door device for a refrigerator or the like characterized by the following. 3. The door device for a refrigerator or the like according to claim 1, wherein a concave groove portion is formed on a lower end surface of the door body along a moving direction of the door body, and the concave groove portion and an opening for entrance of a storage body. between the opposing surfaces of the floor parts near it comprises a sealing movement means for pressing the door body engage each other when the closed state of the door body in a closed position of Kuratai, the sealing movement means Formed in both ends of the groove
Guide groove and horizontal direction that engages with each guide groove
A door device for a refrigerator or the like, characterized by comprising a rotatable guide roller .