JPH07110188A - Height adjusting leg - Google Patents

Abstract

PURPOSE:To provide a height adjusting device capable of adjusting a height of a device easily and within a wide range and having a high bending strength. CONSTITUTION:A leg fixing fitting 9 having a flange 9b with a shape forming a leg fixing recess part 9a and abutted against an inner surface of a bottom surface 1a of a box and having a threaded part 9c formed at a top surface of the recess 9a is buried with a thermal insulating material in the bottom part of a thermal insulating box 1A. A leg fixing shaft 6 is threadably fitted to the threaded part 9c of the leg fixing fitting 9, thereby the leg fixing shaft 6 is fixed to the leg fixing fitting 9. In addition, a reinforcing member 7 having a recess 6A opened downwardly to enclose the leg fixing shaft 6 is fixed to the upper part of the leg fixing shaft 6, thereby the bottom surface 1a of the box is held between the reinforcing part 7b formed at an outer circumference of the reinforcing member 7 and the flange 9b of the leg fixing fitting 9 when the leg fixing shaft 6 is threadably engaged with a device. In addition, the leg 8 is threadably engaged with the leg fixing shaft and the leg 8 is moved up and down, thereby a height in respect to the mounting surface can be adjusted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a height adjusting leg provided at the bottom of a heat insulating box such as a refrigerator.

[0002]

2. Description of the Related Art Conventionally, at the bottom of a heat insulating box such as a refrigerator,
A height adjusting leg is provided so that the height from the installation surface (floor surface) of the main body can be changed. As such a height adjusting leg, there is one disclosed in Japanese Utility Model Laid-Open No. 4-103585. In some cases, a reinforcement plate having a convex portion for mounting legs is provided on the bottom of the main body, and the legs are attached to the reinforcement plate.

[0003] Usually, the reinforcing plate is fixed to the bottom portion with the convex portion fitted in the bottom portion, and the leg portions are fitted in the concave portions formed on the inner surface of the convex portion. When increasing the height, fix the reinforcing plate to the bottom with the protrusion protruding downwards, and attach the legs to the bottom of the downward protrusion so that the height from the installation surface is high. There is one in which the height is increased by the height dimension of the convex portion.

Further, as another height adjusting leg, as shown in JP-A-5-10658, a threaded leg mounting shaft is provided so as to protrude downward from the bottom surface, There is a structure in which an adjuster, which is a leg portion in which a female screw that meshes with is formed, is screwed onto a leg mounting shaft, and the height is adjusted by turning the adjuster.

[0005]

However, in such a conventional height adjusting leg that uses the reinforcing plate having the convex portion, the reinforcing plate is used when the height from the installation surface is changed. Since it has to be removed, it is troublesome and the adjustment range is limited.

The adjuster screwed onto the leg mounting shaft has a thick bottom so that the base body integrally fixed to the leg mounting shaft can be securely fixed with screws or the like. However, since the flange portion formed on the side portion of the base body and the bottom portion are fixed by a plurality of screws, the mounting work is troublesome. Also, because the area of the collar is small,
There is a problem that the adjuster is bent if a lateral force is applied to the base body during carrying-in or the like.

Therefore, the present invention has been made in order to solve such a problem, and it is possible to easily adjust the height in a wide range and to use a height adjusting leg having a large bending strength. It is intended to be provided.

[0008]

According to the present invention, there is provided a collar portion which has a shape for forming a leg mounting recess in the bottom portion of a heat insulating box body such as a refrigerator and which is in contact with the inner surface of the bottom surface of the box body. A leg mounting bracket having a screw portion formed in the center of the top surface of the recess and embedded in the heat insulating material, and the screw mounting portion of the leg mounting bracket is screwed at its upper end to the leg mounting recess. A leg mounting shaft extending downward from the bottom surface of the box body and having a screw formed around the leg mounting shaft, and fixed to an upper part of the leg mounting shaft, and having a downwardly open recess surrounding the leg mounting shaft. The outer periphery has a reinforcing body having a reinforcing portion that holds the bottom surface of the box between the collar portion of the leg mounting bracket and the leg mounting shaft when the leg mounting shaft is screwed, and is screwed to the leg mounting shaft. And a leg for adjusting the height of the surface.

Further, in the present invention, the shape of the reinforcing portion is a regular polygonal column so that a tightening tool for screwing the leg mounting shaft into the leg mounting metal fitting can be fitted therein.

Further, according to the present invention, the leg portion is formed in such a length that the upper end thereof can enter the recess for attaching the leg portion.

Still further, according to the present invention, a diameter portion is formed at an upper end portion of the leg portion so that the leg portion can be recognized in a state where the leg portion protrudes to a desired maximum dimension.

Furthermore, the present invention has a shape for forming a recess for mounting legs on the bottom of a heat insulating box of a refrigerator or the like, and has a flange portion that comes into contact with the outer surface of the bottom of the box and the top surface of the recess. A leg mounting bracket having a screw portion formed in the center of the leg mounting member embedded in a heat insulating material, and the upper end of the leg mounting bracket is screwed into the screw portion of the leg mounting bracket so that the leg mounting recess extends from the bottom surface of the box body. A leg mounting shaft extending downward and having a screw formed on the periphery thereof, and a leg mounting shaft fixed to an upper part of the leg mounting shaft and having a downward opening surrounding the leg mounting shaft and the leg mounting shaft. And a reinforcing member having a pressing portion that, when screwed into the leg mounting recess, enters the recess for mounting the leg and hits the top surface of the recess to press the flange portion of the leg mounting bracket to the outer surface of the bottom surface of the box body. , A leg portion that is screwed onto the leg mounting shaft to adjust the height with respect to the installation surface.

[0013]

According to the first aspect of the present invention, the heat insulating box of a refrigerator or the like has a shape such that a recess for mounting legs is formed on the bottom of the box, and a flange portion that abuts the inner surface of the bottom of the box and a top surface of the recess. A leg mounting bracket having a threaded portion formed at the center of can be embedded in the heat insulating material. Then, by screwing the upper end of the leg mounting shaft into the threaded portion of the leg mounting bracket, the leg mounting shaft is attached to the leg mounting bracket while extending from the leg mounting recess below the bottom of the box. be able to.

Further, by fixing a reinforcing body having a downwardly-opened recess surrounding the leg mounting shaft to the upper portion of the leg mounting shaft, when the upper end of the leg mounting shaft is screwed to the outer periphery of the reinforcing body. The bottom surface of the box body can be held between the formed reinforcing portion and the flange portion of the leg mounting member. Further, the height with respect to the installation surface can be adjusted by screwing the leg part to the leg mounting shaft and moving the leg part up and down.

According to the second aspect of the present invention, the shape of the reinforcing portion is a regular polygonal column, so that the tightening tool used when the leg mounting shaft is screwed into the leg mounting metal fitting can be properly fitted into the reinforcing portion. it can.

According to the third aspect of the present invention, the leg portion is formed to have a length such that the upper end thereof can enter the recess for mounting the leg, so that the minimum height dimension between the bottom surface of the box and the installation surface can be reduced. It can be the same as the total length of the leg or smaller than the total length of the leg.

According to the fourth aspect of the present invention, the diameter portion is formed at the upper end of the leg portion so that it can be recognized that the leg portion is projected to the desired maximum size. Can be judged to have protruded to the maximum.

According to a fifth aspect of the present invention, the brim portion is brought into contact with the outer surface of the bottom surface of the box body to embed the leg mounting bracket in the heat insulating material, while the leg mounting shaft is inserted into the recess for leg mounting when screwed. Then, the flange portion of the leg mounting member can be pressed against the outer surface of the bottom surface of the box body by the pressing portion of the reinforcing body that contacts the top surface of the recess.

[0019]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a refrigerator equipped with height adjusting legs according to an embodiment of the present invention, and FIG.
FIG.

In FIG. 1, reference numeral 1 denotes an under-counter type refrigerator main body (hereinafter referred to as main body) which is installed in a kitchen or the like and uses the top surface 2 as a cooking table. 3 is a door for opening and closing the storage room, and a compressor on one side of the storage room,
A machine room 4 is formed in which a condenser and the like are arranged and a cooling chamber in which a cooler, a cool air circulation fan and the like are arranged is provided.

Reference numeral 5 denotes a height adjusting leg provided on the bottom of the main body 1. The height adjusting leg 5 is fixed to a leg mounting shaft 6 and an upper portion of the leg mounting shaft 6 as shown in FIG. Reinforced body 7
And a leg portion 8 screwed onto the leg mounting shaft 6. On the other hand, in the figure, reference numeral 9 has a shape such that a leg mounting recess 9a is formed in the bottom of the heat insulating box 1A constituting the main body 1, and the bottom surface of the heat insulating box 1A (hereinafter referred to as the box bottom surface). Collar 9b that abuts the inner surface of 1a, and recess 9a
It is a leg mounting bracket having a screw portion 9c formed at the center of the top surface and embedded in a foamed heat insulating material such as urethane (not shown).

Here, the leg mounting shaft 6 of the height adjusting leg 5 is formed of a metal such as steel, and has a fixing portion 6a for fixing the reinforcing body 7, and the periphery above the fixing portion 6a. The fixing screw 6b is formed on the bottom of the fixing portion 6a, and the height adjusting screw 6c is formed on the lower periphery of the fixing portion 6a. The leg mounting shaft 6 is fixed to the reinforcing body 7 with the upper end of the fixing screw 6b protruding from the reinforcing body 7, while the upper end of the fixing screw 6b is fixed to the threaded portion 9c of the leg mounting bracket 9. By being screwed, it extends downward from the bottom surface 1 a of the box body and is fixed to the leg mounting member 9.

The fixed portion 6a is not circular,
It is formed in an oval shape or a regular hexagonal shape, and the fixing portion 6a thus formed is fitted into the fixing groove portion 7a formed in the top portion of the reinforcing body 7 to fix the reinforcing body 7,
When mounting the height adjusting leg 5, the leg mounting shaft 6 can be screwed into the leg mounting bracket 9 without rotating in the reinforcing body 7 by rotating the reinforcing body 7.

The reinforcing member 7 is formed of resin so that it can be integrally fixed to the upper portion of the leg mounting shaft 6, and has a cylindrical recess 6A that surrounds the leg mounting shaft 6 and opens downward. In addition, as shown in FIG. 3, a reinforcing portion 7b having a regular polygonal column shape, in the present embodiment, an octagonal columnar shape, and having a rib 7e from each corner toward the reinforcing body 7 is integrally formed on the outer periphery. Has been formed. Since the ribs 7e are intended to reinforce the reinforcing portion 7b, the ribs 7e may be formed not only on the corners but also on the sides, and the larger the number, the stronger the ribs 7e. You can add more.

Here, the reinforcing portion 7b is formed by the leg mounting member 9
When the leg mounting shaft 6 is screwed into the box, the box bottom surface 1a is held between the leg mounting bracket 9 and the flange portion 9b. The minimum size of the collar portion 9b of the leg mounting bracket 9 is the reinforcement 7
The reinforcing portion 7b is formed to have a larger size than the maximum size of the reinforcing portion 7b, and the reinforcing portion 7b of the reinforcing body 7 has a bowl-like shape with the leg mounting shaft 6 as the center, so that the bending strength is large.

As a result, the height adjusting leg 5 does not bend even if a lateral force is applied during loading. Furthermore, by sandwiching the box bottom surface 1a between the reinforcing portion 7b of the reinforcing body 7 and the collar portion 9b of the leg mounting bracket 9, the leg mounting bracket 9 can be fixed without using screws, Easy to install.

Further, by forming the reinforcing portion 7b in the shape of a regular polygonal column in this way, a tightening tool such as a spanner used when the leg mounting shaft 6 is screwed into the leg mounting bracket 9 can be properly fitted. Is made possible. In addition, 7
Reference numeral c denotes a circular opening formed in the top portion 7b of the reinforcing body 7, and the upper end of the leg mounting shaft 6 projects from the opening 7c.

On the other hand, the leg portion 8 is formed with a cylindrical recess 8A having a length for completely receiving the leg mounting shaft 6 therein, and the leg mounting shaft 6 is entirely provided on the inner surface of the recess 8A.
A female screw 8a is formed which fits the height adjusting screw 6c. Further, when the leg portion 8 rises in the cylindrical recess 6A of the reinforcing body 7 while being screwed onto the leg mounting shaft 6, the upper end of the leg portion 8 eventually becomes a leg of the leg mounting bracket 9 as shown in FIG. It is formed to have a length that allows it to enter the mounting recess 9a.

In this embodiment, when the leg 8 is at the highest position, that is, when the height of the height adjusting leg 5 becomes the minimum height, the upper surface of the leg 8 fixes the reinforcing member 7. The lower surface of the groove portion 7a is abutted. At this time, the inner bottom surface 8b of the recess 8A of the leg portion 8 and the bottom surface of the leg mounting shaft 6 do not come into contact with each other, as shown in FIG.
This prevents damage to the inner bottom surface 8b of the recess 8A of the leg portion 8.

By forming the leg portion 8 into such a length as to allow the leg portion 8 to enter the recess 9a for mounting the leg, the minimum height Hmin between the bottom surface 1a of the box and the installation surface is set to Hmin.
Can be made equal to the total length H of the leg portion 8 or smaller than the total length H of the leg portion 8, so that the range of adjustable height dimension is widened.

Further, as shown in FIG. 3, a holding portion 8c formed in a regular number polygonal column shape is formed at the lower end portion of the leg portion 8. By forming such a holding portion 8c, the leg portion 8c is formed. The part 8 can be rotated with a spanner. Further, as shown in FIG. 2, for example, a different diameter portion 8d is formed on the upper end portion of the leg portion 8 so that it can be recognized that the leg portion 8 protrudes to a desired maximum dimension. If the different-diameter portion 8d is visually moved by moving it downward, it can be determined that the leg portion 8 is projected to the maximum extent.

By the way, as an operation of burying the leg mounting member 9, the collar portion 9b is placed on the bottom surface 1a of the box body before injecting the foamed heat insulating material.
As shown in the figure, it is attached to the inner surface so as to face the insertion hole 10 formed on the bottom surface 1a of the box body and wider than the inner diameter of the convex portion 9a for mounting the legs, and then by injecting the foamed heat insulating material. The foamed heat insulating material is brought into close contact with the leg mounting member 9 so that it is fixed to the inner surface of the bottom surface 1a of the main body 1.

When mounting the height adjusting leg 5 on the leg mounting member 9 thus buried, first, the reinforcing member 7 is inserted into the leg mounting recess 9a of the leg mounting member 9 and, for example, a watch is attached. By rotating the reinforcing body 7 in the circumferential direction, the reinforcing body 7
The fixing screw 6b of the leg mounting shaft 6 rotated together with the leg mounting shaft 6 is screwed into the screw portion 9c of the leg mounting bracket 9, and the height adjusting leg 5 is attached to the bottom of the main body 1. When the height adjusting leg 5 is attached to the bottom of the main body 1 in this manner, the reinforcing portion 7b of the reinforcing body 7 is
Comes into contact with the member bottom surface 1a, and the box bottom surface 1a is attached to the leg mounting bracket 9
It comes to be held between it and the collar portion 9b.

By the way, the height adjusting leg 5 thus attached is usually attached in a state in which the leg portion 8 is at the most raised position as shown in FIG. When the height dimension is not sufficient, the grip portion 8c of the leg portion 8 is turned counterclockwise by a hand or a spanner to gradually move the leg portion 8 downward to a desired height, which is too high. In this case, the leg 8 is turned clockwise to a desired height.
It should be noted that when the leg portion 8 is projected to the desired maximum size, the different diameter portion 8d is recognized, and it can be determined that the leg portion 8 is projected to the maximum extent.

In this way, by screwing the upper ends of the leg mounting shafts 6 into the leg mounting brackets 9, the leg mounting shafts 6 are attached to the bottom face 1 of the box body.
It can be attached to the leg mounting member 9 in a state of being extended downward from a. Further, when the leg mounting shaft 6 is screwed, the bottom surface of the box body is provided between the reinforcing portion 7b formed on the outer periphery of the reinforcing body 7 fixed to the leg mounting shaft 6 and the flange portion 9b of the leg mounting bracket 9. It can hold 1a. And this leg mounting shaft 6
The height with respect to the installation surface can be adjusted by vertically moving the leg portion 8 screwed in.

By the way, in the above description, the leg mounting member has been described in which the brim portion is abutted on the inner surface of the bottom surface of the box body and embedded in the heat insulating material, but the present invention is not limited to this. The leg mounting member may be embedded in the heat insulating material in a state where the collar portion is in contact with the outer surface of the bottom surface.

FIG. 5 is a perspective view of a refrigerator having height adjusting legs according to another embodiment of the present invention. In the figure, the same reference numerals as those in FIG. 2 indicate the same or corresponding portions.

In the figure, 9A has a leg mounting recess 9a formed in a shape into which the reinforcing portion 7b of the reinforcing body 7 can be fitted, and the collar portion 9b is provided on the outer surface of the bottom surface 1a of the box body. Is a leg mounting metal member that is embedded in a foamed heat insulating material in a state of being in contact with.

When the height adjusting leg 5 is attached to the leg mounting member 9A, the upper surface 7d and the reinforcing portion 7b of the reinforcing body 7 which is the pressing portion of the reinforcing body 7 enter the recess 9a for mounting the leg, The upper surface 7d of the reinforcing body 7 or the upper end of the reinforcing portion 7b comes into contact with the top surface of the recess 9a to press the collar portion 9b of the leg mounting member 9A against the outer surface of the box bottom surface 1a.

Since the upper surface 7d of the reinforcing body 7 or the upper end of the reinforcing portion 7b hits the top surface of the recess 9a in this manner, the height adjusting leg 5 is not affected even when a lateral force is applied during loading.
Never bends.

By the way, in the above description, the leg mounting member 9 is fixed to the bottom surface of the main body 1, but, for example, as shown in FIG. 6 which is a sectional view taken along the line BB of FIG. When the height adjusting leg 5 is attached to the lower surface of the machine room 4, it must be attached to the side of the heat insulating box 1A because there is no heat insulating material on the bottom surface of the machine room 4.

At the time of mounting, the leg mounting portion 13 having the recess 13a for fixing the height adjusting leg 5 is screwed to the side of the heat insulating box 1A with the screw 15. However, since the side plate itself of the heat insulating box 1A is thin and weak in strength, the reinforcing plate 16
It is desirable that the reinforcing plate 16 and the mounting flange 14 formed on the leg mounting portion 13 are screwed to each other by embedding.

In this embodiment, the reinforcing plate 16 is provided on the side surface of the heat insulating box 1A, but the reinforcing plate 16 may be attached to the frame of the machine room 4 or other parts having strength as required. good. In addition, the portion itself having strength is the reinforcing plate
It may be 6.

By the way, since stress may be concentrated on the portion of the reinforcing portion 7b which is in contact with the bottom surface of the heat insulating box 1A, the wall thickness may be increased in the outer peripheral direction or the inner peripheral direction as necessary.

[0046]

As described above, according to the invention of claim 1,
Attach the leg mounting shaft to the leg mounting bracket embedded in the bottom of the heat insulating box of a refrigerator or the like, and the reinforcement part formed on the outer periphery of the reinforcement fixed to the upper part of the leg mounting shaft and the collar part of the leg mounting bracket. Since the bottom of the box is sandwiched between them, installation is easy,
Moreover, the bending strength can be increased.

According to the second aspect of the present invention, by making the shape of the reinforcing portion into a regular polygonal column, the tightening tool can be properly fitted into the reinforcing portion. Further, according to the third aspect of the present invention, by forming the leg portion in such a length that the upper end thereof can enter the recess for attaching the leg, the range of height adjustment can be widened.

Further, according to the invention of claim 4, it is possible to judge that the leg portion is projected to the maximum by forming the different diameter portion at the upper end portion of the leg portion. Furthermore, claim 5
According to the invention, the leg mounting is embedded in the heat insulating material by bringing the flange portion into contact with the outer surface of the bottom surface of the box body by the pressing portion of the reinforcing body that enters the recess for mounting the leg and hits the top surface of the recess. The metal fittings can be fixed.

[Brief description of drawings]

FIG. 1 is a perspective view of a refrigerator to which height adjusting legs according to an embodiment of the present invention are attached.

FIG. 2 is a cross-sectional view taken along the line AA of the refrigerator.

FIG. 3 is a perspective view of the height adjusting leg.

FIG. 4 is a side sectional view showing a state in which the height adjusting leg is housed.

FIG. 5 is a sectional view of a height adjusting leg according to another embodiment of the present invention.

FIG. 6 is a side sectional view showing a state in which the height adjusting leg is attached to a base leg angle.

[Explanation of symbols]

 5 Height adjustment leg 6 Leg mounting shaft 7 Reinforcement body 8 Leg part 9,9A Leg mounting bracket 9b Collar part

Claims (5)

[Claims] 1. A heat insulating box of a refrigerator or the like having a shape for forming a recess for mounting legs on the bottom, and a collar portion that abuts the inner surface of the bottom of the box, and the center of the top surface of the recess. A leg mounting bracket embedded in a heat insulating material having a threaded portion, and an upper end of the leg mounting bracket screwed onto the threaded portion of the leg mounting bracket to extend downward from the bottom of the box body from the leg mounting recess. The leg mounting shaft having a screw formed around the leg mounting shaft and the periphery of the leg mounting shaft is fixed to the upper part of the leg mounting shaft and has a downwardly-opened recess surrounding the leg mounting shaft and the outer periphery of the leg mounting shaft. The height of the reinforcing body having a reinforcing portion that holds the bottom surface of the box body with the flange portion of the leg mounting bracket during screwing, and the leg mounting shaft is screwed to adjust the height of the installation surface. A height adjusting leg having a leg portion. 2. The height according to claim 1, wherein the shape of the reinforcing portion is a regular polygonal column so that a tightening tool for screwing the leg mounting shaft into the leg mounting bracket can be fitted therein. Adjustment leg. 3. The height adjusting leg according to claim 1, wherein the leg portion is formed to have a length such that an upper end thereof can enter the recess for mounting the leg. 4. The height adjusting leg according to claim 1, wherein a recognizable diameter portion is formed at an upper end portion of the leg portion in a state where the leg portion protrudes to a desired maximum dimension. 5. A heat insulating box body such as a refrigerator having a shape for forming a recess for mounting legs at the bottom, and a flange portion that comes into contact with the outer surface of the bottom surface of the box body, and a central portion of the top surface of the recess. A leg mounting bracket embedded in a heat insulating material having a threaded portion, and an upper end of the leg mounting bracket screwed onto the threaded portion of the leg mounting bracket to extend downward from the bottom of the box body from the leg mounting recess. The leg mounting shaft having a thread formed around the leg mounting shaft and the leg mounting shaft fixed to the upper part of the leg mounting shaft, and having a recessed opening that surrounds the leg mounting shaft and is screwed into the leg mounting shaft. In this case, a reinforcement having a pressing portion that enters the leg mounting recess and hits the top surface of the recess to press the flange of the leg mounting bracket to the outer surface of the bottom surface of the box body; A height adjusting leg having a leg portion that is screwed onto a shaft and adjusts a height with respect to an installation surface.