JPH0195274A - Drilling method of bolt for mounting door receiving frame in built-up type refrigerator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to a method of drilling bolt holes for attaching a door holder frame to the peripheral edge of a refrigerator opening, for example, in a large-sized prefabricated refrigerator.

Conventional technology and its problems In the conventional method, a door frame is placed around the periphery of the opening provided in the wall of the refrigerator, and the door frame is penetrated from the outside of the door frame and the wall in a straight line. I was trying to drill bolt holes in the.

If a bolt is passed through the hole thus drilled to attach the door frame to the periphery of the warehouse entrance, the head of the bolt will be exposed on the outer surface of the door frame, which is undesirable in terms of design. In addition, outside air may enter the inside of the door frame through the bolt hole, and moisture contained in the outside air may condense.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of drilling holes for bolts for attaching a door holder frame in a prefabricated refrigerator, which solves the above-mentioned problems.

Means for Solving the Problems The method of drilling holes for bolts for attaching a door frame in a prefabricated refrigerator according to the present invention is such that when attaching the door frame with bolts to the periphery of an opening provided in a wall made of heat insulating panels, ,
In this method, a screw hole into which the bolt is screwed is provided in the door frame so that it is not exposed on the outside of the door frame, a male screw to be screwed into the screw hole is provided on the outer circumferential surface of the punch, and the screw hole into which the bolt is screwed is provided on the outer circumferential surface of the punch. Screw in the male screw so that the tip of the punch protrudes inward from the door holder frame, press the door holder frame against the periphery of the storage opening, and mark the position where the bolt hole will be drilled with the tip of the punch. It is characterized by having bolt holes drilled in some places.

In this specification, the term "refrigerator" includes a freezer as well as a regular refrigerator.

Example Embodiments of the invention will now be described with reference to the drawings.

Figure 3 shows the refrigerator viewed from the front.

In the following explanation, before and after is based on Fig. 3.
The front side in the direction perpendicular to the page is called the front, the opposite side is called the back, and the left and right sides refer to the front.

The refrigerator has walls 11 made of heat-insulating panels.

A storage opening 12 is provided in the wall 11. A synthetic resin heat insulating frame 13 is attached to the periphery of the storage opening 12, and
A door receiving frame 14 made of extruded aluminum is attached to surround the heat insulating frame 13, and a door 16 is attached to this via a hinge 15.
is installed.

The door receiving frame 14 includes upper and lower frame members 21.22, left and right side frame members 23.24, and four corner fittings 25 connecting these frame members 21 to 24.

Each of the frame members 21 to 24 has different lengths and orientations,
All have the same cross-sectional shape, and each frame member 21
The right side frame member 24 shown in FIG. 1 will be explained as a representative of 24. It consists of a main body 31 with a U-shaped cross section that is open inward, and a main body 31 that is diagonally inward to the right from the right edge of the outer wall 32. It consists of a decorative wall 33 extending in the direction. Opposing edges 36 are provided on opposing surfaces of the left and right side walls 34 and 35 of the main body 31.

The corner fittings 25 straddle the opposing ends of the two adjacent frame members 21 to 24, and the respective left and right side walls 34
．． The opposing projecting edge 36 is sandwiched between the edges 35 and 35 with almost no gap between them.
It is an L-shaped plate that is engaged from the outside with a plurality of screws 37 passing through the opposing projecting edge 3B and connecting the corner fitting 25.
The frame members 21 to 24 are connected by being screwed into the frame members 21 to 24.

A fixing nut 38 is fixed to the inner surface of the corner fitting 25. Then, a bolt hole 41 is drilled in the wall 11 so as to match the screw hole 39 of the fixing nut 38.
The double-cut bolt 42 is passed through, the threaded portion 43 of one end thereof is screwed into the threaded hole 39 of the fixing nut 38, and the tightening nut 4B is screwed into the threaded portion 44 of the other end via the washer 45, thereby securing the door holder frame. 14 installations have been completed.

Further, the tightening nut 46 is covered with a cap 47.

Next, how to install the door receiving frame 14, including how to open the bolt holes 41, will be explained. For that purpose, punch 5 shown in Figure 2 is used.
1 is used. A male screw 52 is provided on the outer peripheral surface of the punch 51 and is screwed into the screw hole 39 of the fixing nut 38.

First, the door receiving frame 14 is assembled into a frame shape, and the male screw 52 of the punch 51 is screwed into the screw hole 39 of the fixing nut 38. At this time, the tip of the punch 51 is made to protrude inward from the door receiving frame 14. Then, by pressing the door support frame 14 to a predetermined mounting position on the peripheral edge of the storage opening 12, a mark is made on the outer surface of the wall 11 with the tip of the punch 51. After doing this, the door receiving frame I4 is once separated from the wall 11, and the bolt holes 41 are drilled at the marked locations. Next, the punch 51 is removed from the screw hole 39, and the one end threaded portion 43 of the double-cut bolt 42 is screwed into the screw hole 39 instead. Then, while passing the double-cut bolt 42 through the bolt hole 41, attach the door support frame 14 to the warehouse entrance 1.
The other end threaded portion 44 of the double-sided bolt 42
When the bolt protrudes from the bolt hole 41, the tightening nut 46 is inserted there.
screw on.

When using a well-known headed bolt instead of the double-cut bolt 42, place the door support frame 14 against the periphery of the storage opening 12, then insert the bolt into the bolt hole 41 from the inside and insert the threaded end of the bolt into the bolt hole. Just screw it into 41.

In addition, in the above embodiment, the heat insulation frame and the door support frame were made separately, but even when both frames are made in one piece,
Of course, the bolt holes can be drilled using the same method.

Effects of the Invention According to this invention, a punch is screwed into a screw hole into which a bolt is screwed, the door support frame is pressed against the peripheral edge of the storage opening, and the position where the bolt hole is to be drilled is marked with the tip of the punch. Since the bolt holes are drilled in certain places, the bolt hole positions are accurate.

In addition, since the screw holes into which the bolts are screwed are not exposed on the outside of the door frame, when the door frame is attached to the periphery of the warehouse entrance by passing bolts through the bolt holes drilled as described above,
Since the bolts are not exposed on the outside of the door frame, this is advantageous in terms of design, and there is no possibility of condensation caused by outside air flowing into the door frame through the bolt holes.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention, and FIG.
Fig. 2 is an enlarged sectional view taken along line I, Fig. 2 is a sectional view equivalent to Fig. m1 showing how to drill bolt holes, and Fig. 3 is a front view of the refrigerator. 11... Wall, 12... Warehouse entrance, 14... Door holder frame, 3
9...Screw hole, 41...Bolt hole, 42...Bolt, 51...Punch, 52...Male thread. that's all

Claims (1)

[Claims] When attaching the door support frame 14 to the periphery of the storage entrance 12 provided in the wall 11 made of heat insulating panels with bolts 42, a bolt hole 41 is drilled in the same periphery, and the screw hole 39 into which the bolt 41 is screwed is connected to the door. A male screw 52 is provided on the receiving frame 14 so as not to be exposed on the outer surface thereof and is screwed into the screw hole 39.
is provided on the outer peripheral surface of the punch 51, and the punch 51 is inserted into the screw hole 39.
Screw in the male screw 52 so that the tip of the punch 51 protrudes inward from the door holder frame 14, and mark the position where the bolt hole 41 is to be drilled with the tip of the punch 51 by pressing the door holder frame 14 against the periphery of the storage opening 12. A method for drilling bolts for attaching a door holder frame in a prefabricated refrigerator, characterized by marking a mark and drilling a bolt hole 41 at the marked place.