JP2016050730A - Device for heating knee lower limb of desk worker - Google Patents

Abstract

[PROBLEMS] To reliably support a rectangular frame of a heating device by suction, regardless of deformation, inclination, etc. of a fixed surface due to unevenness caused by deformation occurring on the lower surface of the top plate, etc. Provided is a knee lower limb warming device that avoids the danger caused by.
A yoke 11 portion of a suction tool 10 is fixed to a suction tool support column 8 integrally provided at four corners of a rectangular frame 2 with screws 9, and the screw is attached to a suction tool support column. The amount of screwing was set and supported so that the position of the bottom surface of the yoke was movable from 0.8 mm to 1.0 mm from the upper surface of the back plate.
[Selection] Figure 2

Description

The present invention relates to a heating device for preventing cooling of a lower limb of a sitting worker who sits on a chair and performs office work, studying or handwork, in particular, a lower surface of a top plate such as a desk or a work table of the heating device, The present invention relates to improvement of a fixing means to the lower surface of the drawer.

Sitting workers sit on a chair or sit for a long time and work long hours, so when the room temperature falls below 25 ° C, the toes and thighs cool down, especially in girls. Often appeals. For this purpose, unless the floor is heated even if the entire work room is heated, the upper part of the room has a higher temperature than the lower part, and if the feet are at an appropriate temperature, the head is too hot, and the head is at an appropriate temperature. It is common for the feet to become unsuitable.

Since it is technically difficult and expensive to heat the entire room to a suitable temperature, in reality, a portable heating device is placed on the floor, or the worker wraps his / her lower body in a blanket. An ad hoc method is used. However, such warming or heat retaining means often restricts the worker's standing temporarily, and is not preferable in terms of appearance.

Therefore, the applicant of the present application has applied for a device as described in the following prior art document.
According to this, the heating device for preventing cooling of the lower limbs of a seated worker who is studying or handiworking has, for example, a reflector that fixes a sheet ceramic or carbon black heating element as a heat transfer heater. The heat generating element body and the heat insulating material are fixed to a rectangular frame.

For example, as is clear from the description in the prior art document, the rectangular frame with the heating element fixed is a top plate such as the above desk or work table using a dish-shaped suction tool having a ferrite magnet piece. It is detachably fixed to the lower surface and the lower surface of the drawer.

Utility Model Registration No. 3019346

In the fixing means in the above-mentioned conventionally known heating device, as a fixing means, a ferrite magnet piece is fixed to the inside of the dish-shaped adsorber by bonding or the like, and the rectangular frame is pulled out using this dish-shaped adsorber. Etc. are fixed.
In this case, depending on the deformation and flatness of the yoke end edge and the lower part of the drawer, etc., and the flatness of the suction tool, there will be a large difference in the attractive force of the magnet pieces, which will cause problems such as difficult secure fixing. It was.

Specifically, there are many cases in which the lower surface of the top plate, the lower surface of the drawer, etc., such as desks and work tables that have been used for a long time, are deformed.
On the other hand, a rectangular frame that is a part of a heating device in which a heating element is fixed to a rectangular frame with screws has flat four corner portions to which the suction tool is attached. The edge portions of the four yokes, which are the edge portions of the suction tool firmly fixed to the column with screws, are also flat like the rectangular frame of the heating device.

  For this reason, when the above-described heating device is fixed to the lower surface of the top plate, the lower surface of the drawer, or the like that has already been used as described above, the yoke ends of the adsorbers at the four corners of the heating device constitute. The surface and the surface due to unevenness due to deformation generated on the lower surface of the top plate and the like do not coincide with each other. There is a problem that the power drops extremely.

  In order to eliminate the above-mentioned problems, the present invention improves the fixing portion of the suction tool to the rectangular frame with screws, and ensures that the yoke end edges of the four corners of the suction tool and the bottom surface of the top plate are in contact with each other. This ensures that the rectangular frame of the heating device is suctioned and supported regardless of the deformation, inclination, etc. of the fixed surface due to unevenness caused by the deformation that occurred on the bottom surface of the top plate, etc. It is intended to provide a fixing means for a heating device that can avoid danger due to falling.

  It is a structure of a knee lower limb heating device for a sitting worker, and a heating element and a heat insulating material are fixed between a rectangular frame and a back plate, and are integrally provided at four corners of the rectangular frame. The yoke portion of the suction tool is fixed to the suction tool support column with a screw, and the screwing amount of the screw into the suction tool support column is 0.8 mm to 1 mm at the yoke bottom surface position from the upper surface of the back plate. Support was set so as to be movable up to 0.0 mm.

  According to the present invention, the surface formed by the yoke end edges of the suction tools at the four corners of the heating device, or the surface of the yoke end edge surface of each suction tool and the unevenness caused by the deformation generated on the top plate lower surface, etc. The inclination can be automatically and accurately matched, and the heating device can be reliably supported by suction using a smaller suction tool.

1A is a rear view of a rectangular frame 2 according to the heating device 1 of the present invention, and FIG. 1B is a cross-sectional view taken along line A-O-B-C in FIG. . 2 is a cross-sectional view taken along the line D-E-F in FIG. FIG. 3 is a schematic explanatory diagram of the heating apparatus 1 according to the prior art.

One embodiment according to the present invention will be described with reference to the drawings.
1A shows the back surface of the heating device 1, FIG. 1B shows the A-O-B-C cross section of FIG. 1A, and the rectangular frame 1 has a lateral dimension of about It is composed of a plastic molded body having a length of about 380 mm, a vertical dimension of about 330 mm, and a thickness of about 25 mm.
A recess 3 is provided at a substantially central portion of the rectangular frame 1, and a heating element 4 made of a ceramic or carbon black heating element is provided on the opposite surface of this portion.

As apparent from FIG. 1, the heating device 1 is provided with a heating element 4 and a heat insulating material 5. The upper surface of the rectangular frame 2 is covered with a back plate 6. Further, the back plate 6 is structured to be fixed to a plurality of back plate support columns 7 and 7 with screws as shown in FIG.
However, since these structures are substantially the same as those of the conventionally known heating apparatus, detailed description thereof is omitted.

FIG. 2 shows a fixing means of the heating device 1 which is a characteristic structure of the present invention.
As is apparent from FIG. 2, four suction tool support columns 8 for supporting the suction tool 10 for fixing the heating device are formed by integral molding with the rectangular frame 2 at four substantially four corners. ing.
A screw guide hole 8a is formed in the center of the suction tool support column 8, and the suction tool 10 can be fixed at an optimum position from the back plate 6 by screwing a screw 9 described later.

The adsorbing tool 10 itself is of a general type, and has a cross-section dish-shaped yoke 11 made by drawing an iron plate or the like, which is a magnetic material, and a donut-shaped ferrite magnet 12 in the recess of the yoke. The yoke 11 is fixed to the bottom of the yoke 11 with an adhesive. (Hereinafter, in this specification, a doughnut-shaped magnet bonded and fixed in a recess of such a cross-section dish-shaped iron plate is referred to as an adsorbing tool 10.)
Further, a yoke bottom screw hole 11c that is an opening that is slightly larger than the outer diameter of the screw 9 is formed at the center of the suction tool 10, and the screw 9 has the donut-like magnetic body (ferrite magnet) 12 therein. When the suction tool 10 is locked at the optimum dimension position, the suction tool 10 can freely rotate around the screw 9 and can be tilted and slidable in the lateral direction as shown in FIG.

The positional relationship between the screw 9 and the suction tool 10 shown in FIG. 2 indicates the characteristic constituent requirements of the present invention.
In FIG. 2, if the yoke 11 of the suction tool 10 is tightened and fixed with screws 9 so that the bottom surface 11 a of the yoke 11 of the suction tool 10 is in the X-Y position coincident with the plane of the back plate 6, a conventionally known additive It becomes the fixed position of the temperature device.
In this case, the suction tool 10 is screwed into the screw guide hole 8a so as to be securely fixed to the back plate 6 by the screw 9.

  In the positional relationship between the back plate 6 and the suction tool 10 in such a conventionally known heating apparatus 1, the suction tool 10 is firmly fixed and fixed to the back plate 6 as described above. When the lower surface of the work table, which is the suction position of the suction tool 10, is a deformed portion, the surface of the lower surface of the work board and the plane formed by the edge 11b of the yoke 11 of the suction tool 10 are not parallel. As a result, a gap is formed between the lower surface of the top plate and the end edge portion 11b of the yoke 11, and the attractive force is extremely reduced.

On the other hand, in the characteristic configuration of the present invention, the fixing position of the suction tool 10 in FIG. 2 is fixed so that the bottom surface 11a of the yoke 11 of the suction tool 10 can be freely tilted. The suction tool 10 can be rotated around the screw 9 and can swing around the screw 9.
What is important here is that the screw 9 is screwed and fixed to the screw guide hole 8a of the suction tool support column 8.

The embodiment will be described as follows.
The diameter of the suction tool 10 used in the present invention is about 32 mm. The dish-shaped yoke 11 has a thickness of about 4 mm, and a screw through hole 11c having a diameter of about 5 mm is provided at the center thereof.

On the other hand, the amount of dent on the lower surface of the drawer, which is already used, is actually measured on the lower surface of the top plate, the lower surface of the drawer, etc. to which the heating device 1 related to the present invention is applied. As a result, it was observed that the thickness reached 5 to 6 mm.
However, such a dent is not a local deformation but is deformed in a wide range as much as possible, and the angle between the inclined surface of the deformed portion and the other horizontal portion is about 6.5 degrees as a result of actual measurement at many locations. It was confirmed that:

  Therefore, an angle ABC formed by an XY plane (parallel to a horizontal surface such as the original lower surface of the top plate) in FIG. 2 and an X′-Y ′ plane indicating an inclined surface corresponding to the recessed portion is defined as θ degrees. Assuming that the maximum value of θ degrees is 6.5 degrees, the height position of the screw through hole 11c, which is the center portion of the bottom surface 11a of the yoke 11 of the suction tool 10 to be fixed by the screw 9, was obtained.

Specifically, referring to FIG. 2, the angle A-B-C (θ) is set to 6.5 degrees, and the distance from the back plate 6 at the position of the screw through hole 11c, which is the center of the yoke bottom surface 11a, is If the distance θ is simply calculated from the angle θ, that is, the distance of the arc XX ′, the distance between the XY and the diameter of the yoke 11 of the suction tool 10 is about 32 mm as described above. The following is required.
That is, since the circumference (2πr) having a diameter of 32 mm is about 100 mm and the angle ABC is 6.5 degrees, the arc length of the XX ′ portion is about 18 mm.
Therefore, the height of the screw through hole 11c position, which is an intermediate point, is about 0.9 mm.

  From the above results, the yokes 11 of the suction tools 10 and 10 provided at the four corners of the rectangular frame 2 in this embodiment are arranged such that the distance between the bottom surface 11a and the back plate 6 is 0.9 mm, that is, all. The screw 9 is screwed and fixed to the suction tool support column 8 so that the bottom surface 11a of the yoke 11 is within 0.8 mm to 1.0 mm from the back plate 6, so that the suction tool 10 can be mounted at almost all deformation sites. It was able to be securely fixed to the bottom surface of the work table without any gaps.

  In the above-described state, for example, on the bottom surface of the top plate that is not deformed at all (for example, a new desk or the like), the yoke bottom surface 11a adsorbed to the suction surface, which is the bottom surface of the top plate, and the additional weight moved downward by its own weight. The distance between the heating device 1 and the surface of the back plate 6 is 1.0 mm at the maximum. For example, when the operator's kneecap collides with the lower surface of the heating device 1, the heating device 1 moves upward. The impact sound generated in the was also not the volume of concern.

DESCRIPTION OF SYMBOLS 1 Heating apparatus 2 Square frame material 3 Recess 4 Heat generating body 5 Heat insulating material 6 Back plate 7 Back plate support pillar 8 Adsorber support pillar 8a Screw guide hole 9 Screw 10 Adsorber 11 York 11a Yoke bottom face 11b Yoke edge 11c Screw through hole 12 Ferrite magnet

Claims (1)

  It is a structure of a knee lower limb heating device for a sitting worker, and a heating element and a heat insulating material are fixed between a rectangular frame and a back plate, and are integrally provided at four corners of the rectangular frame. The yoke portion of the suction tool is fixed to the suction tool support column with a screw, and the screwing amount of the screw into the suction tool support column is 0.8 mm to 1 mm at the yoke bottom surface position from the upper surface of the back plate. A structure of a heating device characterized by being set and supported so as to be movable up to 0 mm.