JPH0439993Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to a closing structure for a sliding door, and more specifically, for opening and closing an entrance/exit opening formed in a prefabricated refrigerator, etc. This invention relates to an improvement in the closing structure of a sliding door that has a function of automatically bringing the door into close contact with the opening of a refrigerator or the like as the door opens and closes.

[Conventional technology]

Conventionally, sliding doors have been widely used as a means for opening and closing entrance/exit openings of refrigerators and the like. This sliding door includes a guide rail disposed at the upper end of the opening and a hanging wheel that rolls on the guide rail, and when closing the opening, It is necessary to place the door body close to the refrigerator side so that the cold air inside the refrigerator does not escape to the outside.
Conventionally, a closed structure is known in which, in addition to the above-mentioned hanging wheels, a roller for moving inside the door body is attached to the upper end of the door body, and a guide member for guiding the moving roller is provided on the side of a warehouse such as a refrigerator. (Unexamined Japanese Patent Publication 1973-
(See Publication No. 128867). Also, as shown in Figure 8,
A straight inclined guide surface b is formed at the lower end of the door body a that is movable in the opening/closing direction and the closing direction, and an arcuate guide surface c that engages with the inclined guide surface b is formed at the lower end of the opening. By arranging the guide member d, the door body a
There are also known devices that perform occlusion.

[Problem that the invention attempts to solve]

However, in the former case, that is, in the closed structure having a transition roller, it is necessary to provide a roller for moving inside the door body and a guide member in addition to the suspension wheel, which not only complicates the structure but also makes installation and position adjustment troublesome. Moreover, there are problems such as increased costs, and since the door must be moved in two directions, the opening/closing direction and the close contact direction, opening/closing operations require labor, and furthermore, when moving in the close contact direction, it is difficult to hang the door. Since the wheels are moved in a direction perpendicular to the sliding direction against the weight of the door body, there are problems such as failures. In addition, the latter, that is, the structure with the inclined guide surface b and the guide surface c, has the problem that the same curved surface of the guide surface c comes into contact with the inclined guide surface b, which increases friction and prevents smooth operation. Further, since the inclined guide surface b is formed in an inverted M shape, it is inconvenient to process and assemble the door body a, and moreover, it is easily deformed, resulting in a lack of safety.

[Means for solving problems]

This idea was created in view of the above circumstances, and in order to solve the above technical problem, the guide member installed at the lower edge of the entrance/exit opening of refrigerators, etc. and the lower edge of the door body were fixed. An arc-shaped guide surface and a moving surface are formed that can engage each other with the moving member for closing, and when the door body is closed, the linear sliding engagement between the guide surface and the moving surface causes the door body to close. The object of the present invention is to provide a closing structure for a sliding door characterized in that the door is closed and at the same time is brought into close contact with the opening side.

That is, this invention consists of a guide rail disposed at the upper end of the entrance/exit opening, and a guide rail that rolls on the guide rail and closes the opening when the guide rail is engaged with a closing guide provided on the guide rail. In a sliding door consisting of a hanging wheel that moves toward the upper end and a door body that slides to open and close the opening by attaching the hanging wheel to the upper end, at least both ends of the lower edge of the opening a guide member disposed at the opening, and a closing movable member fixedly attached to the lower end of the door body to engage with the guide member, and the guide member is arranged at least at a portion facing the opening. Closure of a sliding door, wherein an arc-shaped guide surface along the vertical direction is formed, and the closing movable member is formed with an arc-shaped movable surface along the vertical direction that can be slidably engaged with the guide surface. It seeks to provide structure.

In this invention, it is sufficient that the opposing engagement surfaces of the guide member and the closing moving member are formed in at least an arc shape, but preferably, the guide member has a semi-arc shape guide surface facing upward. Further, it is preferable that the closing moving member is formed of a semicylindrical member having a downwardly moving surface in the shape of a semi-circular arc.

[Effect]

The above technical means works as follows.

The guide surface of the guide member and the moving surface of the closing moving member are both formed in an arc shape, and when the door body closes the opening, the guide surface and the moving surface are slidably engaged in a linear manner to form the door. By moving your body towards the opening,
When closing, the door body is automatically brought into close contact with the opening side only by the closing movement of the door body.

〔Example〕

Examples of this invention will be described below based on the drawings.

FIG. 1 is a front view showing a prefabricated refrigerator having a sliding door closing structure according to the present invention, and shows a manual single-pull type refrigerator. That is, a guide rail 10 is arranged at the upper end of the entrance/exit opening 2 of the refrigerator 1, and hanging wheels 20 are attached to both sides of the upper end of the door body 3 via brackets 8, and the hanging wheels 20 are attached to the guide rails 10. In the case where the door body 3 is mounted so as to be able to roll on top of the door so that it can be opened and closed, that is, slidably attached, and the closing structure of this invention is formed at the lower edge of the opening 2 and the lower end of the door body 3. It is.

In this case, the guide member 30 is made of a synthetic resin member such as nylon, and as shown in FIG. An upper horizontal portion 38 of an inverted L-shaped holder 36 is fixed with a mounting bolt 6c to an outer piece 34 of a channel-shaped fixture 32 fixed with an anchor bolt 6b.
It is fixed with fixing bolt 6d. Also,
The closing movable member 40 is made of the same synthetic resin member as the guide member 30, and is fixed to the lower end of the door body 3 over its entire length, and is slidably engaged with the guide member 30. It's getting wet. The guide member 30 is formed with an arcuate guide surface 31 extending in the vertical direction at least at a portion facing the opening 2 of the refrigerator 1, and the closing movable member 40 is provided with an arcuate guide surface 31. A moving surface 4 having an arc shape along the vertical direction that can be slidably engaged.
1 is formed. In this case, the guide surface 31 of the guide member 30 may have at least a portion facing the opening 2 that is an arc-shaped surface along the vertical direction, and the movable surface 41 may have at least a portion facing the opening 2.
The guide member 30 may be formed of a semicylindrical member having a semicircular guide surface 31 facing upward, and the movable member 40 for closing may be formed in the shape of an arc along the vertical direction. By forming it with a semicylindrical member having a semi-circular moving surface 41 facing downward, processing, assembly and replacement can be facilitated. Fig. 5 shows another embodiment of this invention. This partial sectional view shows the case where the guide member 30 is directly fixed to the floor surface 5 near the opening 2. That is, this is a case where the guide member 30 is fixed to the upper surface of the retaining plate 33 with flat head screws 35, and the retaining plate 33 is fixed to the floor surface 5 with anchor bolts 37.

In addition, in the above embodiment, the case where the guide members 30 are disposed on both sides of the opening 2 has been described.
This structure is not necessarily required, and the guide member 30 may be provided throughout the lower part of the opening 2.

As shown in FIGS. 6 and 7, the guide rail 10 is formed in a chevron-shaped cross section with a ridge line 12 at least at the center of its upper surface, and more specifically, it is formed in a rectangular cross-section. Further, the guide rail 10 includes a recess 14 that includes the ridge line 12 and is a closing guide portion for moving the door body 3 close to the refrigerator 1 at the stop position of the hanging wheel 20 when the door body 3 is in the closed position. It is formed on the upper outer surface. The guide rail 10 configured in this manner includes a rectangular pipe 16 made of metal such as steel, aluminum, or stainless steel and having a hollow rectangular cross-section, and a moving member made of synthetic resin that is fitted into the rectangular pipe 16 and has the recess 14 formed therein. and a guide rail bracket 22 which is fixed to the refrigerator 1 with fixing bolts 4 when attached to the refrigerator 1.
It is fixed at .

The suspension wheel 20 is vertically adjustable and mounted on a bracket 8 fixed to both sides of the upper end of the door body 3 with mounting bolts 9, and rolls on the top of the chevron-shaped cross section of the guide rail 10. I'm starting to get it.

Note that a sealing material packing 50 is provided around the edge of the door body 3 on the opening side.

In the sliding door closing structure of this invention constructed as described above, when the door body 3 is placed in the open position, the closing movable member 40 fixed to the door body 3 is moved under the opening 2. Since the engagement with the guide member 30 disposed on the edge is released and the hanging wheel 20 engages with a position other than the recess 14 of the guide rail 10, the door body 3 is moved to a position away from the opening 2. (3rd
(see figure). When the door body 3 is slid in the closing direction and the hanging wheel 20 falls into the recess 14 of the guide rail 10, the hanging wheel 20 descends to the ridgeline position of the recess 14, moves toward the opening, and moves for closing. Part 4
0 moving surface 41 and guide surface 31 of guide member 30
are slidably engaged in a linear manner, and the door body 3 is moved toward the opening and brought into close contact with the opening 2 (see FIGS. 2 and 5).
(see figure).

In the above example, the case of a manually operated single-swing door was explained, but it does not necessarily have to be a single-swing door, but may be a double-swing door, or an electric door equipped with an electric motor can also be used. can do. Further, in the above embodiment, the case where the sliding door having the closing structure of this invention is installed in the entrance/exit opening of the refrigerator has been described, but it may also be used as a door of a partition wall inside the refrigerator, and it is not necessarily necessary to use the sliding door having the closing structure of this invention. It goes without saying that it does not have to be the same, and that it can be used in other warehouses as well.

[Effect of idea]

As explained above, according to the closing structure of the sliding door of this invention, the guide members disposed on at least both sides of the lower edge of the opening have upper and lower portions facing at least the opening. An arc-shaped guide surface along the vertical direction is formed, and the closing movable member fixed to the lower end of the door body has an arc-shaped movable surface along the vertical direction that can be slidably engaged with the guide surface. As a result, the following effects can be obtained.

1. Since the guide surface of the guide member and the moving surface of the closing moving member are slidably engaged in a linear manner, there is little friction and a smooth moving operation can be achieved.

2. Since both the guide member and the closing movable member are formed in an arc shape, strength resistance can be provided, deformation can be prevented, and safety can be ensured.

3. According to 2 above, the processing and assembly of the guide member and the moving member for closing are simplified, and since the guide member and the moving member for closing can be formed from a common member, replacement becomes easy.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view showing a sliding door of a refrigerator with a closed structure according to this invention, Fig. 2 is a schematic cross-sectional view taken along the - line in Fig. 1, and Fig. 3 is a diagram of the door body when it is not sealed. FIG. 4 is an enlarged sectional view showing the main parts of this invention; FIG. 5 is an enlarged sectional view corresponding to FIG. 4 showing another embodiment of this invention; FIG. 7 is a front view showing the upper guide portion of the door body in this invention, FIG. 7 is a front view showing the installation state of the guide rule in this invention, and FIG. 8 is a sectional view showing a conventional closing structure. Explanation of symbols, 2...opening, 3...door body, 10...
...Guide rail, 14...Recessed part (blocking guide part) 20
... Hanging wheel, 30 ... Guide member, 31 ... Guide surface, 40 ... Moving member for closing, 41 ... Moving surface.

Claims (1)

[Scope of claim for utility model registration] (1) A guide rail disposed at the upper end of the entrance/exit opening, and a guide rail that rolls on this guide rail,
a hanging wheel that moves toward the opening when engaged with a blocking guide provided on the guide rail;
A sliding door comprising a hanging wheel attached to an upper end and a door body that slides to open and close the opening, a guide member disposed on at least both sides of the lower edge of the opening; , a closing moving member fixed to the lower end of the door body to engage with the guide member, and the guide member has an arcuate guide surface extending in the vertical direction at least in a portion facing the opening. A closing structure for a sliding door, wherein the closing moving member is formed with an arcuate moving surface along the vertical direction that can be slidably engaged with the guide surface. (2) The closing structure for a sliding door according to claim 1, wherein the guide member is formed of a semicylindrical member having an upwardly extending semicircular guide surface. (3) The closing structure for a sliding door according to claim 1, wherein the closing moving member is formed of a semicylindrical member having a downward semicircular arc-shaped moving surface.