JP3574890B2 - Insulation structure of digging iron - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a structure for improving heat insulation performance by storing a digging piece in a heat insulation box.
[0002]
[Prior art]
In general, a digging trowel main body is formed by installing a heater at the bottom of a square box-shaped main body box made of wood or the like, and the rigging main body is located below an opening of a floor. And the upper end of the main body box of the rigging body is fixed to the floor frame at the periphery of the floor opening. In addition, a tower is installed above the opening on the floor, and a kotatsu futon can be put on the tower.
[0003]
[Problems to be solved by the invention]
By the way, in the above-mentioned conventional example, since the main body box of the digging trowel main body is formed of a wooden material or the like, it has a certain degree of heat insulation. However, it is considered that this structure alone has sufficient heat insulation. I couldn't say.
[0004]
In order to provide sufficient heat insulation, it is conceivable to cover the outer periphery of the main body box of the digging main body with a heat insulating box formed into a square box shape with a heat insulating material, and attach the heat insulating box to the floor frame. However, when performing the construction to attach this heat insulation box, for example, the heat insulation box assembled into a square box shape is dropped under the floor from the opening of the floor, and one worker goes under the floor to support the heat insulation box under the floor, and another person Must perform the work of attaching the heat insulation box to the opening of the floor, and at least two workers must perform a large-scale work, which is a problem that the work is difficult to perform.
[0005]
The present invention has been made in view of the above description, and it is an object of the present invention to provide a heat insulating structure for a digging ladder in which one worker can easily install and install a heat insulating box.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the heat insulation structure of the digging trowel according to the present invention is provided with a square box-shaped heat insulating box 3 having an open upper surface so as to surround the outer surface of the digging trowel main body 2 disposed under the floor 1. A metal fitting 10 protruding into the opening 6 at the periphery of the opening 6 is fixed to the floor frame 7, and extends from the lower end of the heat insulating box 3 to a position just before the upper end of the heat insulating box 3 on the outer side surface of the heat insulating box 3. As described above, a concave groove 11 for inserting the locking metal 10 is provided, and the locking metal 10 is locked to a step 12 at the upper end of the concave groove 11. After assembling the heat-insulating box 3 on the floor and attaching the latch 10, the heat-insulating box 3 is dropped from the opening 6 in a state where the groove 11 and the latch 10 correspond to each other, and the recess 10 is recessed with respect to the latch 10. The heat insulating box 3 can be fixed by sliding the groove 11 to lock the locking fitting 10 on the step 12 at the upper end of the concave groove 11. Thus, the heat insulating box 3 assembled on the floor can be mounted simply by dropping it, and the heat insulating box 3 can be easily mounted on the floor.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
First, an example shown in FIGS. 1 to 6 which solves the above-mentioned problem of the conventional technique will be described. The floor frame 7 is formed by placing a joist 7b on a pull-out 7a, and a floor 5 is formed by pasting a floor plate 27 on the joist 7b. The floor 5 is provided with a rectangular opening 6 so as to communicate from above the floor to below the floor 1. The digging body 2 is attached below the opening 6 so as to be buried under the floor 1, and the heat insulating box 3 is attached so as to surround the outer periphery of the digging body 2. The heat insulation box 3 is attached before the digging body 2 is attached.
[0008]
The heat insulating box 3 is formed of a heat insulating material such as a foamed synthetic resin like a urethane foam resin, but the surface of the heat insulating material may be reinforced with a synthetic resin such as FRP as needed. The square box-shaped heat insulating box 3 is formed by a side wall 4 composed of four side plates 4a and a bottom plate 8 at the bottom. The side plate 4a is formed in a rectangular plate shape as shown in FIG. 4, and a fitting projection 13 is provided at one longitudinal end of the side plate 4a so as to extend in the vertical direction. At the end, a fitting recess 14 into which the fitting projection 13 can be fitted is provided so as to extend in the vertical direction. When assembling the side wall 4 by connecting the four side plates 4a, the fitting projection 13 and the fitting recess 14 are fitted and connected in a chasing manner. The lower end of the side plate 4a is provided with a mounting edge 9 projecting inward in the longitudinal direction, and a lower hole 26 for a screw is formed in the upper portion of the side plate 4a. The bottom plate 8 is formed of a rectangular flat plate as shown in FIG. The bottom plate 8 is square in this example, but may be rectangular. In mounting the heat insulating box 3, for example, the following is performed. As shown in FIG. 6 (a), the side plates 4a are connected in a state where the worker enters the floor 1 from the opening 6 to assemble the side wall 4, or the upper part of the side wall 4 is attached to the large pulley 7a. . The upper part of the side wall 4 is fixed to the pull 7a with a screw 15 or the like inserted through a screw lower hole 26. After the side wall 4 is mounted, the bottom plate 8 is dropped from above and the peripheral edge of the bottom plate 8 is mounted on the mounting edge 9 as shown in FIG. By doing so, the work can be performed from above the floor, and even one worker can assemble the heat insulating box 3 and attach the heat insulating box 3. A storage recess 16 is provided at an appropriate position on the inner surface of the side wall 4 of the heat insulating box 3.
[0009]
After assembling and attaching the heat insulating box 3 in this manner, the digging body 2 is mounted so as to be housed in the heat insulating box 3. The digging body 2 is formed by mounting a heater 18 on the bottom of a rectangular box-shaped body box 17 made of wood or the like. A cage 19 is provided above the heater 18 in the rig 2 and a frame 20 is attached to the upper end of the box 17 so as to extend in the circumferential direction. An outlet box 21 is mounted on the upper part of the main body box 17 so that power can be supplied to the outlet box 21. A power supply line 22 for supplying power to the heater 18 is connected to an outlet box 21, and a control line 23 for controlling the heater 18 is also wired to the main body box 17. A heat insulating sheet 24 is attached to the outer surface of the main body box 17. The heat insulating sheet 24 is formed, for example, by pasting an aluminum foil on a sheet having many air bubbles. The digging trowel main body 2 is mounted so as to be dropped from the opening 6, but by dropping the digging trowel main body 2, the frame 20 is mounted on the square member 24 on the inner periphery of the large pulley 7a and mounted. After the digging main body 2 is attached in this manner, the tower 25 is placed on the frame 20 and attached. In the season in which no digging is used, the scaffold is removed and the opening 6 is closed so as to be flush with the floor 5.
[0010]
In the case of the above example, a worker enters from the opening 6 without the bottom plate 8, and after assembling the side wall 4 and attaching the side wall 4, the bottom plate 8 is dropped into the side wall 4 from above the floor, and the peripheral edge of the bottom plate 8 is formed. The heat insulating box 3 can be assembled and the heat insulating box 3 can be mounted by mounting the bottom plate 8 so that the heat insulating box 3 is mounted on the mounting edge 9. Even one worker can mount the heat insulating box 3 from the floor. Although it is possible to easily attach and install the heat insulating box 3, it is necessary for an operator to work under the floor through the opening 6 to work.
[0011]
An example of the embodiment of the present invention shown in FIGS. 7 and 8 solves this problem. This example will be described below. In the case of this example, the heat insulating box 3 is assembled on the floor and then dropped and attached. A plurality of grooves 11 are formed in the outer surface of the side wall 4 of the heat insulating box 3 so as to extend from a lower end of the heat insulating box 3 to a position closer to the upper end, and a step 12 is provided at an upper end of the groove 11. When attaching the heat-insulating box 3, as shown in FIG. 8A, a substantially L-shaped locking metal fitting 10 is attached to the joist 7b on the inner periphery of the opening 6, and the heat-insulating box 3 is positioned at the opening 6. The locking metal fitting 10 and the concave groove 11 correspond to each other, and the heat insulating box 3 is dropped from this state to slide the concave groove 11 with respect to the locking metal fitting 10 and lock the locking metal fitting 10 with the step portion 12. To fix the heat insulating box 3. After temporarily fixing the heat insulating box 3 by locking the step portion 12 to the locking metal fitting 10, the heat insulating box 3 is permanently fixed to the floor frame 7 with screws or the like.
[0012]
Although the present invention has been described with respect to a digging burial buried under the floor, this structure can be similarly implemented in a storage under the floor.
[0013]
【The invention's effect】
The present invention arranges a rectangular box-shaped heat insulation box having an open upper surface so as to surround an outer surface of a digging trowel main body arranged under the floor, and a locking metal fitting protruding into the opening at the periphery of the opening of the floor. It is fixed to the floor frame, and a concave groove is formed in the outer side surface of the heat insulating box so as to pass through the locking metal fitting from the lower end of the heat insulating box to a position just before the upper end of the heat insulating box. Since the locking bracket is locked to the part, after assembling the heat insulating box on the floor and attaching the locking bracket, the heat insulating box is dropped from the opening with the groove and the locking metal corresponding to each other. The insulation box can be fixed by sliding the groove against the stopper and locking the locking metal to the step at the upper end of the groove, and mounting by simply dropping the insulation box assembled on the floor With one worker Mounting of the heat insulating box in which it is easy from the floor.
[Brief description of the drawings]
FIG. 1 is a partially omitted cross-sectional view of an example that solves the problem of the related art .
FIG. 2 is an enlarged sectional view of the outlet box part of the power supply system.
FIG. 3A is a perspective view showing a state where the heat insulating box is attached, and FIG. 3B is a perspective view of the heat insulating box.
4A and 4B show side plates of the heat insulating box, wherein FIG. 4A is a plan view, FIG. 4B is a front view, and FIG. 4C is a side view.
5A and 5B show the same bottom plate, wherein FIG. 5A is a plan view, FIG. 5B is a front view, and FIG. 5C is a side view.
FIGS. 6 (a) and (b) are explanatory views for explaining the installation work of the above heat insulation box.
FIG. 7 is a perspective view showing an example of a heat insulating box according to the embodiment of the present invention .
8 (a) and 8 (b) are explanatory views for explaining the installation of the heat insulating box of the above.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Below the floor 2 Body of digging iron 3 Insulation box 6 Opening
7 floor frame
10 Locking bracket 11 Groove 12 Step

Claims (1)

A square box-shaped heat-insulating box with an open top surface surrounding the outer surface of the rigging body placed under the floor is arranged, and the locking bracket projecting into the opening at the periphery of the floor opening is fixed to the floor frame Then, a concave groove is formed on the outer side surface of the heat insulating box from the lower end of the heat insulating box to a position just before the upper end of the heat insulating box, through which the above-mentioned locking metal is inserted. A heat insulation structure for a digging trowel characterized by locking metal fittings .

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