JP7019336B2 - Height adjustment tool, height adjustment device and height adjustment method - Google Patents

Description

The present invention relates to a height adjusting tool for adjusting the height of the object to be adjusted, a height adjusting device, and a height adjusting method.

An adjusting screw for adjusting the height of the refrigerator is provided at the lower part of the front surface of the refrigerator. In the adjusting screw described in Patent Document 1, a male screw portion is screwed in the vertical direction into a foot mounting portion protruding forward from the lower front surface of the refrigerator body, and the lower portion of the male screw portion is integrated with a disk-shaped bottom plate. There is. The height of the refrigerator can be adjusted by aligning a flat-blade screwdriver with the groove formed at the upper end of the male threaded portion and rotating the male threaded portion together with the bottom plate.

By the way, if the refrigerator is large and heavy, or if the frictional force between the bottom plate and the floor is large, a larger force is required to rotate the adjusting screw, and the adjusting screw is rotated by a flat-blade screwdriver. It becomes difficult to make it work. Therefore, the adjusting screw described in Patent Document 1 forms a plurality of claws on the upper surface of the bottom plate at intervals along the circumferential direction, and is rotated by hooking a tool such as a hexagon wrench on the claws to make a minus. The height can be adjusted with a smaller force than when using a driver.

Japanese Unexamined Patent Publication No. 2008-69999

However, the adjusting screw described in Patent Document 1 needs to form a plurality of claws on the bottom plate, and the structure is complicated by changing the shape.

Therefore, an object of the present invention is to enable the height to be adjusted with a smaller force without changing the shape of the adjusting screw.

In the height adjusting tool according to the embodiment of the present invention, an adjusting screw for adjusting the height of the adjusted body is provided at the lower part of the adjusted body, and the height of the adjusted body is raised by rotating the adjusting screw. A height adjusting tool for adjusting the height of the main body, an engaging portion provided in the main body and entering a groove formed at the upper end of the adjusting screw, and rotation of the main body with respect to the main body. It is provided with a grip portion that protrudes in a direction away from the central axis.

It is a front view of the refrigerator provided with the adjustment screw in the lower part of the front. It is sectional drawing seen from the right side of the refrigerator of FIG. It is explanatory drawing which enlarges and shows the periphery of the adjustment screw in the refrigerator of FIG. It is a top view around the adjustment screw of FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. It is a top view of the adjustment tool which concerns on 1st Embodiment. FIG. 6 is a cross-sectional view taken along the line BB of FIG. It is a work explanatory view which shows the work of rotating the adjustment screw by the adjustment tool of FIG. 6 in the order of (a), (b), (c). 8 is a cross-sectional view taken along the line CC of FIG. 8A. It is a top view corresponding to FIG. 8A which shows the 2nd Embodiment. It is sectional drawing corresponding to FIG. 9 which shows the 3rd Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 1 and 2, the refrigerator 1 according to the embodiment of the present invention has a refrigerator compartment 5 and a vegetable compartment 7 from the upper stage to the lower stage as a storage chamber inside the refrigerator main body 3 as a controlled body. The ice making chamber 9 and the upper freezing chamber 11 are provided side by side in the lower part of the vegetable chamber 7 in order. Further, as a storage chamber, a lower freezing chamber 13 is provided below the ice making chamber 9 and the upper freezing chamber 11. Each storage room is separated by a partition. In the following description, the "front-back direction" is the front-back direction with the front side of the refrigerator on the left side as the front and the back side (back) side of the refrigerator on the right side as the back side in FIG. 2, and the "left-right direction" is in FIG. It is in the left-right direction when viewed from the front side of the refrigerator.

On the front surface of the refrigerating chamber 5, left and right opening / closing doors 15 and 17 for opening and closing the front opening of the refrigerating chamber 5 are provided. The left opening / closing door 15 opens / closes to the left and right via a hinge (not shown) at the left end in FIG. 1, and the right opening / closing door 17 opens and closes to the left and right via a hinge (not shown) at the right end in FIG. do. Drawer-type drawer doors 19, 21, 23 and 25 for opening and closing the front openings of the vegetable compartment 7, the ice making chamber 9, the upper freezing chamber 11 and the lower freezing chamber 13 are provided on the front surfaces thereof. The drawer doors 19, 21, 23 and 25 are all guided by guide rails (not shown) of the refrigerator body 3 and slide back and forth.

Adjusting screws 27 for adjusting the height of the refrigerator 1 shown in FIGS. 3 to 5 are attached to the left and right sides of the lower front portion of the refrigerator body 3. The adjusting screw 27 includes a pedestal 29 that is substantially circular in the plan view of FIG. 4, and a male screw portion 31 that is integrated with the pedestal 29. The pedestal 29 is made of resin, for example, and the male screw portion 31 is integrally molded with the resin pedestal 29. The pedestal 29 may be made of metal.

An adjusting screw attachment 33 is attached to the bottom plate 3a of the refrigerator body 3. The adjusting screw attachment 33 is fixed to the lower surface of the bottom plate 3a by a fastener such as a bolt. The adjusting screw attachment 33 is provided with a protruding portion 33a in which a part thereof protrudes forward as shown in FIG. 3 in a state of being attached to the bottom plate 3a, and a screw hole 33b is formed in the protruding portion 33a as shown in FIG. There is. The male screw portion 31 of the adjusting screw 27 is screwed into the screw hole 33b.

As shown in FIGS. 4 and 5, the portion of the protruding portion 33a to which the male screw portion 31 is attached is recessed with a recess 33c formed on the upper surface. By providing the recess 33c, the rigidity of the adjusting screw fitting 33 at the portion where the adjusting screw 27 is attached is improved in combination with the provision of the flange 33d described later.

The adjusting screw mounting tool 33 fixes the rear side of the protruding portion 33a to the bottom plate 3a of the refrigerator main body 3. The adjusting screw mounting tool 33 has a flange 33d extending in the vertical direction on the outer peripheral edge excluding the rear end. As shown in FIG. 3, the flange 33d is longer in the center in the front-rear direction (horizontal direction in FIG. 3) with respect to the length in the vertical direction. A support shaft 35 is attached to the rear side of a portion where the vertical length of the flange 33d is long, and a roller 37 is rotatably attached to the support shaft 35.

In FIG. 3, the roller 37 is separated from the floor surface 39 on which the refrigerator 1 is installed. By adjusting the adjusting screw 27 so that the height of the refrigerator 1 is lowered from the state shown in FIG. 3, the roller 37 comes into contact with the floor surface 39. With the rollers 37 in contact with the floor surface 39 and receiving the weight of the refrigerator 1, the roller 37 and the pair of left and right rollers 38 (see FIG. 2) provided on the rear side of the refrigerator 1 move the refrigerator 1 back and forth. Can be moved.

As shown in FIG. 4, a groove 31a is formed at the upper end of the male threaded portion 31. The groove 31a is formed along the diameter direction of the male screw portion 31 and has a certain width into which a flat-blade screwdriver can be inserted. FIG. 3 shows a state in which the drawer door 25 indicated by the alternate long and short dash line is closed. However, when the drawer door 25 is pulled forward from the closed state and opened, as shown in FIG. 4, the protruding portion 33a and the male screw portion of the adjusting screw attachment 33 are formed. 31 is exposed in plan view. Actually, a cover 40 (see FIGS. 1 and 2) that covers the protrusion 33a and the male screw portion 31 is attached to the lower part of the drawer door 25 shown in FIG. 3, so that the cover 40 can be removed by removing the cover 40. The protruding portion 33a and the male screw portion 31 are exposed.

With the protruding portion 33a and the male screw portion 31 exposed, a flat-blade screwdriver (not shown) is inserted into the groove 31a and rotated to rotate the adjusting screw 27, and the height of the refrigerator 1 can be adjusted. Here, if the refrigerator 1 is large and heavy, or if the frictional force between the pedestal 29 and the floor surface 39 is large, a larger force is required to rotate the adjusting screw 27, and a flat-blade screwdriver is used. The work of rotating the adjusting screw 27 becomes difficult. Therefore, in this embodiment, the adjustment tool 41 shown in FIGS. 6 and 7 is used.

The adjusting tool 41 relates to the first embodiment of the present invention, and comprises an annular main body portion 43, three protrusion-shaped engaging portions 45 (45a, 45b, 45c), and a rod-shaped gripping portion 47. I have. The main body 43 has a circular outer shape in the plan view of FIG. 6 and has a circular insertion hole 49 formed in the center. The outer circle of the main body 43 and the circle of the insertion hole 49 are concentric circles. The tip of the male screw portion 31 is inserted into the insertion hole 49 when the adjusting screw 27 is rotated. Three engaging portions 45 are provided on the inner peripheral edge of the insertion hole 49 at equal intervals in the circumferential direction. The three engaging portions 45 (45a, 45b, 45c) project from the inner peripheral edge of the insertion hole 49 toward the center of the insertion hole 49 with the same length.

The diameter of the circle connecting the tips of the three engaging portions 45a, 45b, 45c to each other is smaller than the diameter of the male threaded portion 31. The thickness t of the engaging portion 45 shown in FIG. 6 is slightly smaller than the width T of the groove 31a of the male screw portion 31 shown in FIG. 4 (t <T). The height h of the engaging portion 45 shown in FIGS. 7 and 9 is higher than the depth H of the groove 31a shown in FIG. 9 (h> H). The height h may be equal to or slightly lower than the depth H.

When rotating the adjusting screw 27, one of the three engaging portions 45 (for example, the engaging portion 45a) is inserted into the groove 31a as shown in FIG. 8A. At this time, when the inner peripheral surface of the insertion hole 49 around the engaging portion 45a is substantially brought into contact with the outer peripheral portion of the male screw portion 31, the tips of the other two engaging portions 45b and 45c are on the outer peripheral portion of the male screw portion 31. Approximately contact. The grip portion 47 projects in a rod shape from the outer peripheral portion of the main body portion 43 in a direction away from the rotation center axis of the main body portion 43. The rotation center axis of the main body 43 is the rotation center of the adjustment tool 41 when the adjustment screw 27 is rotated, and may be considered as the center of the insertion hole 49.

Next, a method of adjusting the height of the refrigerator 1 using the adjusting tool 41 will be described.

As described above, when adjusting the adjusting screw 27, the cover 40 shown in FIGS. 1 and 2 is removed, and the drawer door 25 is further pulled forward to open the drawer door 25. In this state, the adjusting tool 41 is set on the adjusting screw 27 as shown in FIG. At this time, as shown in FIG. 8A, one of the three engaging portions 45 (for example, the engaging portion 45a) is inserted into the groove 31a. The tips of the other two engaging portions 45b and 45c are substantially in contact with the outer peripheral portion of the male screw portion 31.

With the engaging portion 45a inserted into the groove 31a, the adjusting screw 27 (male screw) is obtained by grasping the grip portion 47 and rotating the entire adjusting tool 41 in the direction of arrow D, for example, so as to be in the state shown in FIG. 8 (b). The portion 31) rotates with respect to the adjusting screw fitting 33. As a result, the adjusting screw attachment 33 moves vertically with respect to the floor surface 39 together with the refrigerator main body 3, and the height of the refrigerator 1 is adjusted.

When rotating the adjusting tool 41, the adjusting screw 27 is rotated while gripping the grip portion 47 protruding outward from the outer peripheral edge of the main body portion 43, so that the height of the refrigerator 1 can be adjusted with a smaller force. .. At this time, in the adjusting tool 41, the inner peripheral surface of the insertion hole 49 around the engaging portion 45a and the tips of the other two engaging portions 45b and 45c are substantially in contact with the outer peripheral portion of the male screw portion 31. Therefore, the adjusting tool 41 supports three points around the male screw portion 31, and the rotation work on the adjusting screw 27 can be efficiently and easily performed.

When the adjusting screw 27 is rotated from the state of FIG. 8 (a) to the state of FIG. 8 (b) and then the adjusting screw 27 is further rotated in the same direction, the adjusting tool 41 is rotated from the state of FIG. 8 (b). Is once moved upward to release the engagement of the engaging portion 45a with the groove 31a. Next, as shown in FIG. 8C, the adjusting tool 41 is rotationally displaced so as to return in the direction opposite to the rotation direction D described above, and this time, the engaging portion 45b is inserted into the groove 31a.

At this time, the inner peripheral surface of the insertion hole 49 around the engaging portion 45b and the tips of the other two engaging portions 45a and 45c are substantially in contact with the outer peripheral portion of the male screw portion 31, and in this state, the above-mentioned Similarly, the grip portion 47 is gripped and the entire adjusting tool 41 is rotated in the D direction. When the adjusting screw 27 is further rotated in the same direction, the above operation is repeated. The same applies to the case where the adjusting screw 27 is rotated in the direction opposite to the D direction.

Next, the action and effect of the above-described embodiment will be described.

In this embodiment, an adjusting screw 27 for adjusting the height of the refrigerator 1 is provided at the lower part of the refrigerator 1, and the height adjusting tool 41 for adjusting the height of the refrigerator 1 by rotating the adjusting screw 27 is a refrigerator. 1 Includes a height adjusting device including an adjusting screw 27 provided at the bottom of 1 and having a groove 31a at the upper end, and an adjusting tool 41 for adjusting the height of the refrigerator 1 by rotating the adjusting screw 27. The adjusting tool 41 is provided on the main body 43, the engaging portion 45 provided in the main body 43 and entering the groove 31a formed at the upper end of the adjusting screw 27, and the rotation center axis of the main body 43 with respect to the main body 43. It is provided with a grip portion 47 that protrudes in a direction away from the above.

Further, the present embodiment includes a height adjusting method in which an adjusting screw 27 for adjusting the height of the refrigerator 1 is provided at the lower part of the refrigerator 1 and the height of the refrigerator 1 is adjusted by rotating the adjusting screw 27. The height adjustment method is such that the engaging portion 45 formed in the main body portion 43 is inserted into the groove 31a formed in the upper end of the adjusting screw 27, and the rotation center of the main body portion 43 is relative to the main body portion 43. By grasping and rotating the grip portion 47 protruding in the direction away from the axis, the adjusting screw 27 is rotated to adjust the height of the refrigerator 1.

In such a height adjusting tool 41, a height adjusting device, and a height adjusting method, the adjusting screw 27 is rotated by utilizing the groove 31a formed at the upper end of the adjusting screw 27. Therefore, it is not necessary to change the other parts of the male screw portion 31 and the shape of the pedestal 29, and the height can be adjusted with a smaller force while suppressing the complication of the structure of the adjusting screw 27.

The main body 43 of the adjusting tool 41 in the present embodiment includes an insertion hole 49 into which the adjusting screw 27 is inserted, and the engaging portion 45 projects from the inner peripheral edge of the insertion hole 49 toward the center of the insertion hole 49. There is. In this case, the engaging portion 45 can be easily inserted into the groove 31a of the male screw portion 31 with the male screw portion 31 of the adjusting screw 27 inserted in the insertion hole 49.

In the present embodiment, the inner diameter of the insertion hole 49 is formed to be larger than the outer diameter of the adjusting screw 27, and a plurality of engaging portions 45 are provided at intervals along the circumferential direction of the inner peripheral edge of the insertion hole 49. In this case, the tip of the other engaging portion 45 can be brought into contact with the outer peripheral portion of the male screw portion 31 in a state where one engaging portion 45 is inserted into the groove 31a of the male screw portion 31. As a result, the adjusting tool 41 can suppress the misalignment with the adjusting screw 27 when rotating the adjusting screw 27, and the adjusting work can be efficiently performed.

Three engaging portions 45 of the adjusting tool 41 in the present embodiment are provided at equal intervals along the circumferential direction of the inner peripheral edge of the insertion hole 49. Therefore, for example, with one engaging portion 45a inserted into the groove 31a of the male screw portion 31, the inner peripheral surface of the insertion hole 49 around the engaging portion 45a and the other two engaging portions 45b, 45c. The outer peripheral portion of the male screw portion 31 can be pressed by three points in the circumferential direction with each tip, and the deviation of the adjusting tool 41 with respect to the adjusting screw 27 can be suppressed more reliably.

Although the adjusting tool 41 shown in FIG. 6 is provided with three engaging portions 45, it is sufficient that the adjusting tool 41 is provided with at least two of the three engaging portions 45. In this case, the positional relationship between the two engaging portions 45 in the circumferential direction is such that one engaging portion 45 is inserted into the groove 31a and the tip of the other engaging portion 45 is relative to the groove 31a. It is necessary to deviate in the circumferential direction and come into contact with the outer peripheral portion of the male screw portion 31. As a result, the male threaded portion 31 can be pressed at two points in the circumferential direction by the inner peripheral surface of the insertion hole 49 around the engaging portion 45 that has entered the groove 31a and the tip of the other engaging portion 45. It is possible to suppress the deviation between the adjusting tool 41 and the adjusting screw 27 at the time of height adjustment.

FIG. 10 is a plan view corresponding to FIG. 8A of the adjusting tool 41A according to the second embodiment. The adjusting tool 41A has one engaging portion 45, and the inner diameter of the insertion hole 49 is slightly larger than the outer diameter of the male screw portion 31. Therefore, when the male screw portion 31 is inserted into the insertion hole 49, the gap between the inner peripheral surface of the insertion hole 49 and the outer peripheral portion of the male screw portion 31 is small, and the insertion hole 49 and the male screw portion 31 are abbreviated. It will be in contact. The groove 31a of the male threaded portion 31 has a plus (+) shape including a first groove 31a1 and a second groove 31a2 orthogonal to each other. Other configurations are the same as those in the first embodiment, and similar components are designated by the same reference numerals.

In FIG. 10, the engaging portion 45 is inserted into the first groove 31a1. In this state, by rotating the adjusting tool 41A, the adjusting screw 27 is rotated and the height of the refrigerator 1 is adjusted. At this time, with the engaging portion 45 inserted into the first groove 31a1, the inner peripheral surface of the insertion hole 49 substantially contacts the outer peripheral portion of the male threaded portion 31 over the entire circumference. The deviation between the 41A and the adjusting screw 27 can be suppressed.

After rotating the adjusting screw 27 in the state of FIG. 10 in the direction of arrow D by, for example, about 90 degrees, the adjusting tool 41A is once removed from the male screw portion 31, and this time, the engaging portion 45 is inserted into the second groove 31a2. The adjusting screw 27 is rotated in the same manner as described above. By repeating this work, the height of the refrigerator can be adjusted to the required height.

FIG. 11 is a cross-sectional view showing a third embodiment and corresponds to FIG. In the adjusting tool 41B of the third embodiment, three engaging portions 45 are provided at equal intervals in the circumferential direction as in the first embodiment shown in FIGS. 6 and 7, and these three engaging portions are provided. 45a, 45b, 45c project downward as shown in FIG. However, the engaging portion 45c is not shown in FIG.

That is, the engaging portion 45 shown in FIG. 11 projects in the axial direction of the adjusting screw 27 with respect to the main body portion 43 in a state of being inserted into the groove 31a. In other words, the engaging portion 45 projects with respect to the main body portion 43 in a direction intersecting the protruding direction of the grip portion 47 with respect to the main body portion 43. Such an engaging portion 45 has an inclined portion 451 that projects diagonally from the inner peripheral edge of the insertion hole 49 toward a direction away from the insertion hole 49 on the central axis of the insertion hole 49, and a main body portion from the inclined portion 451. It is provided with a horizontal portion 452 extending substantially parallel to the surface of 43. The horizontal portion 452 enters the groove 31a.

The adjusting tool 41B provided with the engaging portion 45 as shown in FIG. 11 can be effectively used when the recess 33c is formed in the adjusting screw fitting 33 and the tip of the male thread portion 31 is located in the recess 33c. can. In this case, in the adjusting tool 41 of the first embodiment shown in FIGS. 6 and 7, the engaging portion 45 cannot be inserted into the groove 31a. However, with the adjustment tool 41B shown in FIG. 11, the engaging portion 45 protruding downward in FIG. 11 can be inserted into the groove 31a.

Although the embodiments of the present invention have been described above, these embodiments are merely examples described for facilitating the understanding of the present invention, and the present invention is not limited to the embodiments. The technical scope of the present invention is not limited to the specific technical matters disclosed in the above-described embodiment, but also includes various modifications, modifications, alternative technologies, and the like that can be easily derived from the specific technical matters.

For example, in each of the above-described embodiments, the refrigerator 1 has been described as an example, but the present invention is not limited to the refrigerator 1 as long as the height can be adjusted, and the present invention can be applied to, for example, a vending machine or a showcase. ..

In each of the above-described embodiments, an example in which the number of engaging portions 45 is three or less has been described, but there may be four or more engaging portions 45. Further, a plurality of grip portions 47 may be provided at intervals in the circumferential direction.

1 Refrigerator (adjusted body)
27 Adjusting screw 31a Adjusting screw groove 41, 41A, 41B Adjusting tool 43 Adjusting tool body 45 (45a, 45b, 45c) Adjusting tool engaging part 47 Adjusting tool grip 49 Inserting hole in the body

Claims (3)

An adjusting screw for adjusting the height of the adjusted body is provided at the lower part of the adjusted body, and the height adjusting tool adjusts the height of the adjusted body by rotating the adjusting screw.
With the main body
An engaging portion provided in the main body portion and entering a groove formed at the upper end of the adjusting screw,
The main body is provided with a grip portion that protrudes in a direction away from the rotation center axis of the main body.
The main body portion includes an insertion hole into which the adjusting screw is inserted, and the inner diameter of the insertion hole is formed to be larger than the outer diameter of the adjusting screw.
Three engaging portions are provided at equal intervals along the circumferential direction of the inner peripheral edge of the insertion hole so as to project from the inner peripheral edge of the insertion hole toward the center side of the insertion hole.
The three engaging portions allow one of the three engaging portions to enter the groove formed at the upper end of the adjusting screw, and the inside of the insertion hole around the one engaging portion. A height adjusting tool characterized in that when the peripheral surface is brought into contact with the outer peripheral portion of the adjusting screw, the tips of the other two engaging portions are formed so as to be in contact with the outer peripheral portion of the adjusting screw. A height adjusting device including an adjusting screw provided at the lower part of the adjusted body and having a groove at the upper end, and an adjusting tool for adjusting the height of the adjusted body by rotating the adjusting screw.
The adjustment tool is
With the main body
An engaging portion provided in the main body portion and entering a groove formed at the upper end of the adjusting screw,
The main body is provided with a grip portion that protrudes in a direction away from the rotation center axis of the main body.
The main body portion includes an insertion hole into which the adjusting screw is inserted, and the inner diameter of the insertion hole is formed to be larger than the outer diameter of the adjusting screw.
Three engaging portions are provided at equal intervals along the circumferential direction of the inner peripheral edge of the insertion hole so as to project from the inner peripheral edge of the insertion hole toward the center side of the insertion hole.
The three engaging portions allow one of the three engaging portions to enter the groove formed at the upper end of the adjusting screw, and the inside of the insertion hole around the one engaging portion. A height adjusting device characterized in that when the peripheral surface is brought into contact with the outer peripheral portion of the adjusting screw, the tips of the other two engaging portions are formed so as to be in contact with the outer peripheral portion of the adjusting screw. An adjusting screw for adjusting the height of the adjusted body is provided at the lower part of the adjusted body, and the height of the adjusted body is adjusted by rotating the adjusting screw with an adjusting tool. ,
The main body of the adjusting tool is provided with an insertion hole into which the adjusting screw is inserted, and the inner diameter of the insertion hole is formed to be larger than the outer diameter of the adjusting screw.
Three engaging portions provided on the main body portion project from the inner peripheral edge of the insertion hole toward the center side of the insertion hole, and are provided at equal intervals along the circumferential direction of the inner peripheral edge of the insertion hole.
One of the three engaging portions is inserted into a groove formed at the upper end of the adjusting screw, and the inner peripheral surface of the insertion hole around the one engaging portion is the outer peripheral surface of the adjusting screw. With the tip of the other two engaging portions in contact with the outer peripheral portion of the adjusting screw, the portion protrudes from the main body portion in a direction away from the rotation center axis of the main body portion. A height adjusting method comprising gripping a grip portion and rotating the adjusting tool to rotate the adjusting screw to adjust the height of the object to be adjusted.

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