JP2012097946A - Front door structure of showcase - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front door structure of a showcase improved in an external shape of the door without impairing appearance of the showcase, so as to prevent a fingertip of a user from being accidentally caught by side edges of the front doors in opening the door.SOLUTION: The front doors 2L, 2R of a showcase are provided with a hinge shaft 2d on a hinge side of a frame-shaped door sash 2c inserting and holding a transparent glass plate 2b therein, and a handle 2a on a side opposite to the hinge side, which are pivoted in a front opening portion of the showcase body 1 through the hinge shaft 2d. A front side corner part of a side edge on the hinge side of the door sash 2c is formed in an R shape, a center of a curvature of the R shape is established in an axial center of the hinge shaft 2d or in the vicinity thereof, so that fingertips and articles are prevented from being accidentally caught by reducing side protrusion and displacement of the side edge corner part in opening the door.

Description

  The present invention relates to a front door structure of a showcase intended for a glass door disposed on the front of a reach-in type freezer / refrigerated showcase that is installed and used in a store such as a supermarket or a convenience store.

First, a conventional structure of a glass door disposed on the front surface of the opening of a main body case of the showcase will be described with reference to FIGS.
In FIG. 4, 1 is a front-opening case body equipped with a product display shelf (not shown) in the cabinet, 2L and 2R are glass doors arranged side by side on the front opening of the case body 1, and 2a is a door opening / closing (For example, refer to Patent Document 1).

  Here, as shown in FIG. 5, the glass doors 2L and 2R have a structure in which a transparent glass plate 2b is fitted and held in a frame-shaped door sash 2c (an extruded product of metal or hard resin material). The door suspending side opposite to 2a is pivoted to the open end of the case body 1 via a hinge shaft 2d planted at the upper and lower ends thereof.

  In the showcase shown in FIG. 4, the glass doors 2L and 2R are single doors, the handle 2a is provided at the left edge of the door sash 2c, and the hinge shaft 2d is provided at the upper and lower ends of the right edge. 6 and 7 show plan views of the state in which the doors 2L and 2R are pivoted on the front opening of the case body 1. FIG. In the showcase shown in FIG. 4, the left and right glass doors 2L and 2R are of a single-open type (right-open type), but the left and right glass doors 2L and 2R are left and right as a double door type as disclosed in Patent Document 1. Some of them are designed to open.

  Next, the detailed structure on the hinge side of the glass doors 2L and 2R is shown in FIGS. That is, the door sash 2c to be an extrusion-molded product has a rectangular outer peripheral shape, and the hinge shaft 2d is implanted in the front side corner of the sash as shown in the drawing. With this structure, when the door is opened forward from the closed position indicated by the solid line around the hinge shaft 2d, the side edge corner portion P (see FIG. 8A) of the door sash 2c is shown by the dotted line locus in FIG. 8B. As shown, it protrudes from the sash end face of the door closed position indicated by the solid line to the side P ′ position and is displaced. In addition, the symbol g shown in the drawing represents the play gap initially set between the edge of the door sash 2c and the inner surface of the side wall of the main body case 1, and a represents the protruding displacement amount of the corner portion P ′ when the door is opened. The play gap g is set to about 7 to 8 mm in consideration of variations in door assembly accuracy. Therefore, there is a space (2 × g) twice as large as the gap g between the glass doors 2L and 2R arranged side by side (see FIG. 7).

JP 2006-336884 A (FIG. 1)

  By the way, about the showcase installed and used in the sales floor of a store, in the above-described conventional door structure, between the glass door 2R and the side wall of the case body 1 or between adjacent glass doors 2L and 2R due to carelessness of the customer. Cases have been reported in which fingertips are inadvertently caught in the gap, resulting in injury or objects being caught. That is, the glass doors 2L and 2R are opened by the shopper on the handle 2a and opened to the front of the case. In this case, an infant, other customers, etc. are touching the hinge side of the glass door. If the door is opened without being noticed, as described in FIG. 8 (b), the side edge corner portion P 'of the door sash 2c protrudes to the side, and the residual gap between the inner wall of the case body 1 is narrowed. If the fingertip is sandwiched between the door sash 2c and the inner wall surface of the opening of the case body 1 or between the front surfaces arranged side by side, there is a risk of unexpected injury.

  In this respect, if the previously set gap g is secured sufficiently wide in advance, an accidental finger-claw accident can be prevented. However, if the gap g is increased, the appearance and appearance of the showcase are impaired. In addition, there are known preventive measures such as providing a finger nail prevention cover on the hinge side of the door and closing the play gap g with a cushioning material, but problems remain in design, part cost, and the like.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a front door structure in which the outer shape of the door is improved so as to prevent finger claws without impairing the appearance of the showcase.

In order to achieve the above object, according to the present invention, the frame-shaped door sash with a see-through glass plate fitted and held has a door structure in which a hinge shaft is provided on the suspension base side and a handle is provided on the anti-suspending base side. In the front door of the showcase pivoted on the front opening of the case body via
The front side corner of the side edge of the door sash on the suspending side is formed into an R shape (Claim 1), and the center of curvature of the R shape is set to the axial center of the hinge shaft or a position in the vicinity thereof ( Claim 2).

  Further, an R shape symmetrical to the R shape formed on the side edge corner portion on the suspending side is formed on the sash side edge corner portion on the side opposite to the suspension side of the front door.

  For the door sash as described above, the front side corner of the door side edge on the suspension side is formed into an R shape, so that when the front door is opened with the hinge shaft as a fulcrum, the suspension side (hinge side) The amount of displacement at which the side edge corners protrude sideways is small compared to the front door of the conventional structure. As a result, it is possible to secure a sufficiently large residual gap between the door side edge on the hinge side and the side wall of the case body and between the adjacent front doors, thereby effectively preventing unexpected fingernails.

Here, by setting the center of curvature of the R shape to the axial center of the hinge shaft or a position near the hinge shaft, the amount of protrusion displacement of the side edge corner portion when the door is opened can be suppressed to zero or slightly.
In addition, by forming the same R shape on the side edge of the door sash on the anti-suspending side, the outer shape of the front door is symmetrical and the appearance is improved. However, the side edge of the door sash can be manufactured with one type of extrusion mold.

BRIEF DESCRIPTION OF THE DRAWINGS It is a principal part structure figure of the suspension origin side of the front door by the Example of this invention, Comprising: (a) is a top view of a door sash, (b) is explanatory drawing showing the displacement of the side edge corner part accompanying door opening and closing. is there. It is the arrangement | positioning top view of the front door concerning FIG. 1 distribute | arranged to the opening part right side of the showcase. FIG. 3 is an arrangement plan view of the front door of FIG. 2 and the front door arranged side by side on the left side thereof. It is a front view of a showcase in which two front doors are arranged on the left and right in the front opening of the case body. It is a front view of the front door in FIG. FIG. 5 is an arrangement plan view of a conventional front door disposed on the right side of the opening in FIG. 4. FIG. 7 is an arrangement plan view of the front door of FIG. 6 and the front door arranged side by side on the left side thereof. It is a principal part structure figure of the suspending side of the front door in FIG. 6, Comprising: (a) is a top view of a door sash, (b) is explanatory drawing showing the displacement of the side edge corner part accompanying door opening and closing.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on the examples shown in FIGS. In addition, in the figure of an Example, the same code | symbol is attached | subjected to the member corresponding to FIGS. 6-8, and the description is abbreviate | omitted.
The front door 2R in the illustrated embodiment is basically the same as the front door 2R having the conventional structure shown in FIG. 8, except that the outline of the door sash 2c on the suspending side of the door is formed in the following shape. Yes. That is, the door sash 2c having a conventional structure has a square corner at the front side of the door as shown in FIG. The side edge corner on the side is formed in an R shape, and the curvature center of the R shape is set to be located in the vicinity of the axis of the hinge shaft 2d.

In the illustrated embodiment, as shown in FIGS. 2 and 3, the side edges of the front doors 2L and 2R on the side opposite to the suspending side are also formed with an R shape symmetrically with the side edge on the suspending side.
With the above configuration, even when the front door 1 is opened forward from the closed position indicated by the solid line around the hinge shaft 2d, the R-shaped portion formed on the side edge of the door sash 2c is shown by the dotted line locus in FIG. As shown, the amount of displacement b protruding sideways from the sash end surface at the door closed position indicated by the solid line is smaller than the amount of displacement a in FIG. The gap g hardly changes regardless of the opening / closing position of the door.

  Therefore, when the customer puts his hand on the handle 2a and opens the fingertip of another person, even if the fingertip of another person touches the side edge of the door suspension side, the fingertip mistakenly touches the front door 1 and the side wall of the case body 1. You can safely prevent finger claws that are injured.

  In addition, the outer shape of the front doors 2L and 2R is symmetrical on the side edge corners of the door sash 2c symmetrically with the suspension base side, so that the outer shape of the front door is symmetrical. In addition to improving the appearance, the side edge of the door sash can be manufactured with one type of extrusion mold even on the manufacturing surface.

1 Showcase case body 2L, 2R Front door 2a Handle 2b Transparent glass plate 2c Door sash 2d Hinge shaft R R shape

Claims (3)

A frame-shaped door sash with a see-through glass plate fitted and held has a door structure with a hinge shaft on the suspending side and a handle on the non-suspending side, and is pivotally connected to the front opening of the case body via the hinge shaft. At the front door of the showcase,
A front door structure for a showcase, wherein a corner on the front side of the sash side edge on the suspending side of the door sash is formed in an R shape.   2. The front door structure of a showcase according to claim 1, wherein the center of curvature of the R shape is set to the axial center of the hinge shaft or a position in the vicinity thereof.   The front door structure according to claim 1, wherein an R shape symmetrical to an R shape formed on a side edge corner portion on a hinge side is formed on a side edge corner portion on a side opposite to the suspension side of the door sash. Showcase front door structure.