JPH0230994Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to the structure of a vertical adjustment device for box furniture such as a chest of drawers.

[Conventional technology]

Conventionally, vertical adjustment devices for box furniture often have a structure in which a bolt is installed upright on a leg seat and the bolt is attached to a nut fixed to the bottom of the furniture. However, with this structure, the furniture must be lifted and adjusted up and down, which is physically demanding and tedious work. Moreover, it is difficult to level the furniture with one operation, and the adjustment must be repeated several times.

For this purpose, the method described in Japanese Utility Model Application Publication No. 54-40226 has been proposed. In this structure, a frame is located on the lower surface of the bottom of the box furniture, and vertical adjustment devices are arranged at four corners inside the frame.
In this case, instead of providing an insertion hole in the frame, make an opening in the vertical direction on the inside bottom of the box furniture, insert the tool downward through this opening, and then rotate it to make vertical adjustments. was.

[The problem that the idea aims to solve]

However, in order to make vertical adjustments, it is necessary to rotate the box furniture downward while placing oneself inside the box furniture, which makes the adjustment work posture uncomfortable. Since the horizontal state is unknown from inside the furniture, each time you perform a rotation operation, you have to go outside the furniture and check the horizontal state, and depending on the confirmation, you can perform further rotation operations inside the furniture, so you can make adjustments. The work was extremely tedious. Moreover, since the interior of the furniture is communicated through the opening, it is not desirable from the viewpoint of insect prevention.

Japanese Utility Model Publication No. 48-40863 discloses a technique in which a vertical adjustment device is embedded in a side plate so that it can be adjusted from the outside of the side plate. However, since box furniture is generally arranged side by side with no gaps between each other, it is difficult to adjust them from the adjacent outside. In this case, after the adjacent pieces of furniture have been separated, it is necessary to go around the outside of the side plate and adjust the height, which is a very troublesome work, which still cannot be resolved.

In order to eliminate the above-mentioned drawbacks, Utility Model Application Publication No. 158064/1983 discloses that a vertical adjustment device facing forward is provided on the front leg of a kitchen appliance. Here, if the rear leg adjustment device is placed below the bottom, it will not be possible to adjust it from the front, so it is made to protrude inside so that it can be adjusted when the door is open. However, it was necessary to adjust the adjustment device protruding from the internal rear wall with the door etc. open. Therefore, as long as the adjustment device protrudes inside, this technique cannot be applied to box furniture.

Therefore, in view of the conventional situation mentioned above, the purpose of the present invention is to provide a vertical adjustment device for box furniture that can be operated from the front using the frame without lifting the box furniture, and that can always be installed horizontally. It is about providing.

[Means to solve the problem]

To achieve the above object, the vertical adjustment device for box furniture according to the present invention includes a casing disposed at at least four locations on the front wall and the rear wall inside the frame located at the bottom of the box furniture; At least four insertion holes are horizontally drilled in the front wall of the frame body, and each of the insertion holes is provided in the insertion hole of the front wall from each casing of the front wall and can be rotated from the front side of the front wall of the frame plate. A rear wall that is provided in the insertion hole of the front wall by connecting a drive shaft for the front wall and a long shaft element from each casing of the rear wall and that can be rotated from the front side of the front wall of the frame plate. The structure consists of drive shafts for the motors, driven shafts that are linked to these drive shafts and protrude downward from each casing, and a leg seat that is attached to the driven shafts via a bolt and nut mechanism. .

[Effect]

The box furniture is lined up without gaps, and in this case, the drive shaft for the front wall and the drive shaft for the rear wall face the insertion hole in the front wall. The insertion hole is located in the front wall of the frame plate located at the bottom of the box furniture, and the drive shafts for the front wall and the rear wall do not protrude from the insertion hole, so it is not visually noticeable from the front side.

When vertically adjusting, the front wall is vertically adjusted by rotating the front wall drive shaft located in the insertion hole of the front wall of the frame from the front side of the box furniture.

Next, since the drive shaft for the rear wall is located in the insertion hole in the front wall of the frame, the rear wall can be adjusted up and down by rotating in the same way from the front side of the box furniture. be exposed. Each adjustment is made while observing the vertical adjustment from the front side of the box furniture.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the vertical adjustment device for box furniture according to the present invention will be described in detail below with reference to the drawings.

In this embodiment, as shown in the first figure, box furniture is illustrated as a unit consisting of a Japanese chest of drawers A, a wardrobe B, a Japanese clothes chest, and a chest of drawers D.

Each of the box furniture A to D is provided with a frame E at the bottom, but this frame E may be integrated into each of the box furniture A to D, or may be integrated into each of the box furniture A to D. It may be constructed separately so that it can be placed.

At four locations inside the frame E, casings 1, 1, . . . are arranged as shown in the second figure. Each casing 1 has two casings on both left and right sides of the front wall 2 and rear wall 3 of the frame body E.
It is attached in one place. Each caging 1
From the front wall 2 to the front wall 2, drive shafts 4, 4 for the front wall and drive shafts 4, 4 for the rear wall are rotatably provided. The base end of each drive shaft 4 is rotatably supported by the casing 1, and the tip of each drive shaft 4 does not protrude from the front into four insertion holes 5, 5... bored in the front wall 2. They are each rotatably positioned. As shown in the third figure, an insertion portion 6 for rotating the drive shaft 4 with a tool is provided on the distal end surface of each drive shaft 4.

As shown in FIG. 4, the drive shaft 4 for the rear wall can be implemented by dividing the drive shaft 4 into a plurality of shaft elements 4A, 4B and configuring these into a joint. In this case, the casing 1 is formed with a short shaft element 4A attached to the front wall 2 side, and the shaft element 4A on the rear wall 3 side is formed.
Long shaft elements 4B having the same front and rear widths as the box furniture A to D can be connected to A.

The casing 1 is formed into a hollow box shape, and mounting pieces 7, 7 for fixing the casing 1 to a frame are protruded from the left and right outer sides thereof. Each mounting piece 7
Mounting holes 8, 8... are bored in the. A driven shaft 9 is provided in the casing 1 located on the side of the drive shaft 4.
is supported rotatably in the vertical direction, and this driven shaft 9 projects below the casing 1.
A drive shaft 4 and a driven shaft 9 located inside the casing are interlocked by a worm wheel. That is, a worm gear 10 of a worm wheel is fixed to the outer periphery of the drive shaft 4, and a worm wheel gear 11 is fixed to the driven shaft 9.

A leg seat 12 is attached to the driven shaft 9 protruding from the casing 1 via a bolt and nut mechanism 13. A bolt 14 of this bolt/nut mechanism 13 is formed on the driven shaft 9, and a nut 15 of the bolt/nut mechanism 13 is formed on the leg seat 12.
Bolt 1 located between leg seat 12 and casing 1
A nut 16 is attached to 4 for tightening 12 and the driven shaft 9 in a double nut state after vertical adjustment.

According to the embodiment configured as above,
With the box furniture A to D arranged horizontally in a row as shown in the first figure, apply the operating tool to the insertion part 6 located in the insertion hole 5 from the front side, and By individually rotating the drive shafts 4, 4 for the front wall and the drive shafts 4, 4 for the rear wall, the vertical adjustment of each of the box furniture A to D can be performed. That is, the rotation of the drive shaft 4 causes the driven shaft 9 to rotate,
In accordance with the rotation of the driven shaft 9, the amount of protrusion of the leg seat 12 from the frame body E is varied via the bolt and nut mechanism 13.

There are the following aspects as modified examples of the invention.

(a) The driving shaft 4 and the driven shaft 9 can be interlocked by using bevel gears that mesh with each other. In this case, the bevel gear provided on the driven shaft 4 is made small,
It is also conceivable that by increasing the size of the bevel gear provided on the driven shaft 9, the operating force due to the deceleration effect can be reduced.

(b) As shown in FIG. 5, the leg 12A may be formed into a block having an appropriate external shape, and a cylindrical nut hole 17 with a bottom may be formed from the top surface to the bottom surface of the leg 12A. .

(c) In the above embodiment, a structure in which the vertical adjustment is performed at four locations on the frame body was illustrated, but in the present invention, it may be arranged at four or more locations. According to this modification, when the weight of the box furniture is heavy and the middle part of the frame E in the left-right direction bends, the bending is supported by the leg seats 12 in the middle part, which is advantageous.

[Effect of idea]

As explained above, the present invention has the following effects.

(b) Since the drive shaft for the rear wall is located within the insertion hole in the front wall of the frame of the box furniture, even if it is installed with no space on either side of the box furniture,
All vertical adjustments can always be easily made from the front without having to open a door or the like. In particular, the vertical adjustment can be made while checking the inclination from the front side of the box furniture, making it possible to achieve simple and accurate adjustment.

(b) Since it is provided on the front side of the front wall by connecting the long axis elements from each casing for the rear wall, it is sufficient to use the long axis elements that match the front and rear width of each box furniture. The drive shaft for the rear wall can be assembled rationally, and manufacturing can be simplified.

(c) Since there is an insertion hole in the front wall, it is only necessary to insert the front end of the drive shaft into the insertion hole, making installation on the front side easy. Moreover, since the drive shaft is located in the lower frame of the box furniture and is not exposed from the front side of the frame, the product value is not impaired.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the vertical adjustment device for box furniture according to the present invention, Fig. 2 is an enlarged bottom view with a part of the vertical adjustment device removed, and Fig. 3 is an enlarged view of the vertical adjustment device. Front view with part of the casing removed, No. 4
The drawing is an enlarged plan view with a part of the main part of the drive shaft for the rear wall cut away, and FIG. 5 is a sectional view showing the main part of a modification of the present invention. A to D...Box furniture, E...Frame, 1...Caging, 2...Front wall, 3...Rear wall, 4...Drive shaft, 4B...Drive shaft for rear wall, 5... ...Through hole, 9
... Driven shaft, 10 ... Worm gear, 11 ... Wheel gear, 12 ... Leg seat, 13 ... Bolt and nut mechanism, 16 ... Nut.

Claims (1)

[Scope of utility model registration request] casings arranged at at least four locations on the front wall and rear wall inside the frame located at the bottom of the box furniture; and at least four insertion holes horizontally drilled in the front wall of the frame board; A driving shaft for the front wall, which is provided in the insertion hole of the front wall from each casing of the front wall and can be rotated from the front side of the front wall of the frame plate, and a long shaft element from each casing of the rear wall are connected. a drive shaft for the rear wall that is provided in the insertion hole of the front wall and can be rotated from the front side of the front wall of the frame plate;
This vertical adjustment device for box furniture includes driven shafts that are interlocked with these drive shafts and project downward from each casing, and leg seats that are attached to the driven shafts via bolt and nut mechanisms.