JPH0544930A - Automatic elevation type foot warmer - Google Patents

Abstract

PURPOSE:To eliminate manual work of descending and ascending of a table and lifting up of a placed mat. CONSTITUTION:A table elevating lift 2 is provided for housing a table 3 into a fire box 1 and for making the table 3 protrude upward out of the fire box 1. An upper hurdle supporting part 5 is provided in the fire box 1 which supports a hurdle 4 above the table 3 in a state that the table 3 is housed in the fire box 1. A mat 6 is placed detachably on the hurdle 4 which is supported detachably on the upper hurdle supporting part 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic hoisting and digging pit which is hoisted by electric power.

[0002]

2. Description of the Related Art A conventional excavator has been provided with metal fittings at four corners of an upper opening of a furnace box to support legs of a table. And when not using excavation, the table was stored in the furnace box, and the tatami mat was placed on the table and used.

[0003]

However, in the conventional example as described above, the work of storing the table in the furnace box,
When using a tatami mat as a dugout, it is a laborious task to lift and remove the tatami mat and take out the table in the furnace box. Because of this, it was an impossible task for the old man.

The present invention has been made in view of the above-mentioned problems of the prior art, and its purpose is to make it possible to take out and put in the table by hand and to raise the laid tatami mat by hand. The purpose is to provide an automatic lifting and digging pit that does not require any work.

[0005]

The automatic hoisting and digging kotatsu of the present invention comprises a lift device 2 for raising and lowering a table for accommodating the table in the furnace box or projecting it upward from the furnace box 1. Provided,
The furnace box 1 is provided with a sludge upper support part 5 for supporting the slats 4 above the seat 3 in a state where the seat 3 is housed in the furnace box 1, and the slats 4 detachably supported on the sludge upper support 5 are provided. The tatami mat 6 is removably mounted on the above-mentioned structure, and by adopting such a structure, the problems of the above-mentioned conventional example are solved and the object of the present invention is achieved.

[0006]

When the table 3 is housed in the furnace box 1, the tatami mat 6 is detachably placed on the slats 4 which are detachably supported by the sludge upper support 5 provided in the furnace box 1. In this state, when it is used as a digging porch, the lifting device 2 for lifting and lowering the table 3 raises the table 3, and the table 3 lifts the slats 4 above the table 3 upward and tatami mats on the slats 4 6 is to be lifted up, and the tatami mat and the slats 4 lifted up are removed to be used as an excavation pit. In this case, a person can squat down and heavier the weight of the sludge 4 or the tatami mat without manually lifting it, and can be removed in the lifted state, which simplifies the work. When it is not used as an excavator, the table 3 is lowered by the lift device 2 for lifting and lowering the table 3 to store the table 3 in the furnace box 1 and a supporting board for supporting a saw provided on the furnace box 1. 5 to support the slats 4 and the slats 4 into the furnace box 1
The load from the tatami mat 6 is set by placing the tatami mat 6 on the slats 4 which is located above the table 3 stored inside.
The above-mentioned load 6 is not applied to the table 3, so that even if a person walks on the tatami mat 6, the table 3 as well as the table 3 can be moved up and down. The lift device 2 is prevented from being damaged by an excessive load.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. As shown in FIGS. 1, 2, 3, and 5, the furnace box 1 is in the shape of a box with an open top, and a lift device for accommodating a lift device 2 for raising and lowering a table is provided on both sides inside. A storage 7 is provided. A table storage section 8 is provided between the lift device storage sections 7. The lift device storage section 7 and the table storage section 8 are partitioned by a middle partition, and this middle partition includes a central partition plate 9 and end partition plates 10 on both sides of the central partition plate 9, as shown in FIG. And a narrow slit 11 is provided between the side end of the central partition plate 9 and the side end of the end partition plate 10.

A lift device 2 for raising and lowering a table is arranged in the lift device housing 7 and fixed to the furnace box 1. As shown in FIG. 6, FIG. 7, and FIG. 8, the lift device 2 for raising and lowering the table is a motor 15 attached to the frame 12, a gear 16 for transmitting the rotation of the motor 15, and an arc shape rotated by the gear 16. The rack 17 and the X-link are formed. That is, the X-link is configured by rotatably supporting an intermediate portion of the two links 18 and 19 by a shaft 20, and one end portion of the link 18 is attached to the one end portion side of the elevating frame 13 by a shaft 26. A roller 21 pivotally supported and provided at the other end of the link 18 is provided with a support frame 1
2 is movably attached to a rail 22 provided at a substantially middle portion in the vertical direction, and a roller 23 provided at one end of the other link 19 is provided at the other end of the side end surface of the elevating frame 13. The link 19 is movably attached to the rail 24.
An arcuate rack 17 is fixed to the other end of the link 17, and the link 18 is attached to the support frame 1 by the shaft 25 near the rack.
It is pivotally supported at a substantially intermediate portion in the vertical direction of 2. Then, by rotating the motor 15, the rack 1 is moved through the gear 16.
7, the X-link is rotated by the rotation of the rack 17, and the elevating frame 13 is moved up and down. Rollers 27 are provided on both sides of the elevating frame 13, and the rollers 27 are vertically movably fitted in guide rails 28 provided on both sides of the frame body 12 so as to extend vertically. A support arm 29 is provided at both ends of the elevating frame 13 so as to project toward the front.
Is slightly projected into the table storage portion 8 from a narrow slit 11 between the side edge of the vertical partition and the side edge of the edge partition plate 10, and the vertical frame 13 is raised and lowered to project on the vertical frame 13. The support arm 29 is moved up and down in the slit 11.

The tip of the support arm 29 slightly projects into the table storage portion 8 as described above, and the receiving base 30 is fixed to the projecting tip of the support arm 29. Figure 4
As shown in FIG. 3, the receiving base 30 is provided with a connecting pin 31, and a part of the lower surface of the leg portion 32 of the table 3 is placed on the receiving base 30, and the connecting pin 31 is attached to the lower surface of the leg portion 32. The seat 3 is removably fitted into a connecting hole 33 formed in the portion, whereby the seat 3 is positioned and supported by the support arm 29.

The frame 12 is fixed to the furnace box 1 by bolts, and a central partition plate 9 as shown in FIG. 9 is detachably attached to the frame 1 by a screw tool. Also,
As shown in FIGS. 10 and 11, the end partition plate 10 has a locking metal fitting 34 projecting from the inner surface of the lower part thereof, and a locking groove 35 provided on the locking metal fitting 34 projecting from the inner surface of the furnace box 1. Pin 36 with
(The headed pin 36 may be a headed screw tool), and only the upper part of the end partition plate 10 is attached to the frame body 1 with the screw tool. As described above, when the end partition plate 10 is mounted, the lower part is locked by the locking means and only the upper part is mounted by the screw tool. The end partition plate 10 is arranged at the end in the furnace box 1. In addition, since the width is narrow, it is difficult to operate a jig such as a screwdriver when trying to attach the lower portion with a screw tool. Therefore, the above-mentioned attachment is adopted to avoid this.

An outlet 10a is attached to the lower part of one of the plurality of end partition plates 10 as shown in FIG. 1, and the wiring for supplying power to the outlet 10a is provided from outside the furnace box 1 to the lift device storage portion 7. It is introduced inside and is connected to an outlet 10a provided on the end partition plate 10. A support base 3 is provided at the four corners of the bottom of the table storage unit 8 in the furnace box 1.
7 are erected. A joint base 38 is detachably attached to the support base 37 as shown in FIG. 16. The joint base 38 has a pin 39 vertically provided on the lower surface thereof.
7 is removably fitted in the hole 40 provided in the joint 3
8 is attached. Here, as shown in FIG. 16, a cord passage 41 is provided on at least one of the upper surface of the support base 37 and the lower surface of the joint base 38. Then, the cord 43 led out from the heater device 42 arranged at the center of the bottom of the table storage portion 8 of the furnace box 1 is passed through the cord passage groove 41, and the plug 44 at the tip of the cord 43 is attached to the end partition plate 10. It is adapted to be plugged into the outlet 10a provided at the lower part, and by doing so, it is possible to prevent the cord 43 from being displaced in the table storage portion 8. Here, as shown in FIG. 15, the support base 37 may be provided with a notch 48, and the cord 43 may be passed through the notch 48.

As shown in FIGS. 1, 2 and 5, the furnace box 1
A sludge upper support 5 is provided on the upper part of the inner wall of the table storage part 8 inside, and a lower sludge support part 45 is provided on the lower part of the inner wall of the table storage part 8. Here, the side plate 46 of the furnace box 1 which is not the inner wall of the table storage part 8 in the furnace box 1 and the middle partition are provided, and the side plate 46 and the middle partition respectively support the upper and lower slats 5 and the slats. And part 45. Further, in the embodiment, the middle partition is provided with the sludge upper support portion 5 and the sludge lower support portion 45 in the central partition plate 9 portion.

The outer edge of the sludge 4 can be mounted on a sludge upper support portion 5 or a sludge lower support portion 45 provided in the furnace box 1. The four corners of the drainboard 4 are cut out as shown in FIG. 3, and when the drainboard 4 is placed on the bottom support part 45 of the drainboard 4, the support base 3 is provided at the cutouts 46 of the four corners of the drainboard 4.
7 is located. Table storage part 8 of furnace box 1
An outer frame 53 framed in a rectangular shape is mounted on the edge of the upper opening. In this case, as shown in FIG. 12, FIG. 13, and FIG. 14, positioning fittings 54 having an L-shape in plan view are vertically provided on the lower surfaces of the four corners of the outer frame 53, and the positioning has an L-shape. By fitting the metal fittings 54 along the four corners of the edge of the upper opening of the seat storage section 8, the outer frame 53 is placed at the exact position of the edge of the upper opening of the seat storage section 8 of the furnace box 1. By this, when the seat 3 is lifted up and down from the seat storage portion 8, it can be lifted and lowered without being caught by the outer frame 53.

As described above, the table 3 has a leg portion 32 which is detachably mounted on and supported by the pedestal 30.
A top plate 50 is removably placed on the upper plate part 49 of the top plate. The top plate 50 is a normal wood-based top plate, but the back side is a concave part and has a small thickness. A thin thin tatami mat 51 is fitted. Then, as shown in FIG. 1, the excavated kotatsu having the above-mentioned structure opens a part of the tatami floor on which the tatami mat 6 is laid,
The furnace box 1 is arranged under the floor, and the outer frame 53 provided at the opening edge of the upper opening of the table storage portion 8 of the furnace box 1 is fitted to a part of the opening of the tatami mat so that it fits exactly. .. In the figure, 55 is a large pull, 56 is a joist, and 57 is a floor board.

The lift device 2 for raising and lowering the table and the heater device 42
The operation unit 58 is provided on the wall of the room, for example. FIG. 17 shows the operation unit 58. In addition, FIG.
A circuit diagram is shown in. In FIGS. 17 and 18, 5
Reference numeral 9 denotes a changeover switch, which can be freely switched to each contact of "off", "heater", and "elevation". Further, 60 is an ascending switch and 61 is a descending switch. Reference numeral 62 is a power switch. Then, when the power switch 62 is turned on, the changeover switch 59 is switched so that the "elevating" contact is turned on, and when the raising switch 60 is turned on in this state, the relay R7 is activated and the relay contact r7 is turned on. ,
At the same time, the ascending relays R1 and R2 are activated to switch the relay contacts r1 and r2, which are normally closed contacts, and the motor 15 is energized to rotate the motor 15 in the forward direction to raise and lower the frame 1.
3 is raised, and the table 3 supported by the support arm 29 provided on the elevating frame 13 is raised. Then, the upper limit switch 63 is operated by the support arm 29, the elevating frame 13 or the like to stop the power supply to the motor 15. In this case, a rise confirmation limit switch 64 is provided slightly below the upper limit switch 63, and the rise confirmation limit switch 64 is turned on by being operated by the support arm 29 or the elevating / lowering frame 13 just before the upper limit switch 63 is operated. It is set so that Here, the rise confirmation limit switch 64 is arranged below the upper limit switch 63 because the table 3 is being used as a digging porch while the table 3 is raised to the upper limit, the table 3 is loaded by a load, or the table 3 is moved by vibration or the like. Table 3
This is to prevent the power from being cut off while the heater device 42 is being energized as will be described later when the ascending confirmation limit switch 64 is inadvertently turned off in the case where the value has dropped slightly downward. Since the ascent confirmation limit switch 64 is off in the state where the table 3 is raised and stopped at the upper limit position in this way, when the changeover switch 59 is switched to "heater" in this state, the heater is turned on via the outlet 10a. The device 42 is energized. By the way, when the changeover switch 59 is changed so that the "heater" contact is turned on, the relay contact r7 is turned off. Therefore, the down switch 61 is erroneously set in the state where the changeover switch 59 is changed to the "heater". Even if it is operated and turned on, the motor 15 is not energized, and a dangerous state such as lowering the table 3 with the heater device 42 kept on is avoided. On the other hand, when lowering the table 3, the selector switch 59 is switched so that the “elevation” contact is turned on.
When the lowering switch 61 is turned on in this state, the relay R7
Is activated and the relay contact r7 is turned on, and at the same time, the descending relays R3 and R4 are activated to switch the relay contacts r3 and r4 which are normally closed contacts, and the current is supplied to the motor 15 in the opposite direction to that at the time of rising. Flows, the motor 15 is rotated in the reverse direction to lower the elevating frame 13, and the table 3 supported by the support arm 29 provided on the elevating frame 13 is lowered. When lowered to the lower limit position, the lower limit switch 67 moves the support arm 2
9 or the elevating frame 13 is operated to stop the energization of the motor 15. Further, when the support arm 29 or the elevating frame 13 supporting the table 3 is lowered, the ascent confirmation limit switch 64 is turned off and the heater device 42 side is de-energized. Therefore, the table 3 is lowered. In this state, even if the changeover switch 59 is erroneously changed over so that the "heater" contact is turned on, the heater device 42 is not energized. In FIG. 18, reference numeral 65 is a power supply circuit,
66 is a commercial power supply.

The excavated kotatsu of the present invention has the table 3 as described above.
Is lifted by the lift device 2 for raising and lowering the table to be used as an excavated pit, or the table 3 is lowered to raise the furnace box 1
It is also stored in the table storage part 8 of the furnace, but when the table 3 is lowered and stored in the table storage part 8 of the furnace box 1, the slats 4 are placed on the sludge upper support part 5. Then, a tatami mat 6 is placed on the upper surface of the drainboard 4 as shown in FIG. 19 to form an ordinary tatami floor. At this time, the outer frame 53 is to be removed. In this case, the drainboard 4 is supported by the drainboard upper support portion 5, and the load from the tatami mat 6 is supported by the drainboard 4. And the table 3 has a sludge support 5
It is located below the sludge 4 supported by the table (it is located with a little gap) so that the load from the tatami mat 6 is not applied to the table 3, and the lift device 2 for raising and lowering the table is oversized from the tatami mat 6. It is designed so that it will not be damaged due to excessive load. In this case, the joint base 38 is removed from the support base 37, and a part of the lower surface of the leg portion 32 of the table 3 is placed and supported on the support base 37.

On the other hand, the table 3 is thus stored in the table storage portion 8 of the furnace box 1, the slats 4 are placed on the sludge upper support portion 5, and the tatami mat 6 is placed on the upper surface of the slats 4. When using it as a digging from the state where it is used as a tatami floor
In the state of 9, the table 3 is lifted by the lift device 2 for lifting the table.
The table 3 is raised when the table 3 is raised.
Since the slats 4 supported by the saw top support 5 are lifted by the table 3 with the tatami 6 placed on the upper surface, the tatami mat 6 which is fitted tightly is automatically lifted. It does not take the trouble of peeling the tatami mat 6 that fits tightly and lifting it by hand.

Further, the table 3 can be used as a general table by removing it from the receiving table 30 at the protruding tip of the support arm 29 and moving it to another place. In this case, the outer frame 53 is removed, the slats 4 are placed on the slaw upper support 5, and the tatami mat 6 is placed on the upper surface of the slats 4 to form a tatami floor. In the above description, the joint 38 is removed and the tatami mat 6 has the same thickness as the normal tatami mat 6 that constitutes the tatami floor. However, the joint pad 38 is provided on the upper surface of the support base 37. When the table 3 is placed, a part of the lower surface of the leg 32 of the table 3 is placed and supported on the upper surface of the joint 38 when the table 3 is lowered. Is set so that the top surface of the top plate 50 of the top surface of the top plate is at the same level as the other surface of the tatami floor, and in this state, the top plate 50 is turned upside down to fit in the recess of the top plate 50. Since the thin tatami mat 51 is exposed flush with the tatami mat floor, such use is possible.

[0019]

As described above, according to the present invention, a lift device for raising and lowering a table is provided for accommodating the table in the furnace box or projecting it upward from the furnace box. The furnace box is provided with a top support part for supporting the slats above the seat with the seat stored inside, and a tatami mat is removably placed on the slats removably supported on the top support part. Since it is possible to move the table in and out automatically without manual work, especially when the table is stored and used as an excavation pit, the tatami mat laid as the table rises is raised. It is not necessary to remove the tatami mat laid by hand to remove it, and when not using it as a digging porch, lower the table by the lift for lifting the table and lower the table to the furnace box. It is stored inside and the slats are supported on the upper slats support provided on the furnace box. By placing the slats above the table that is stored in the furnace box and placing the tatami mat on the slats, the load from the tatami mats can be received by the slats, and Even if a person walks on the tatami mat, it is possible to prevent an excessive load from being applied to not only the sitting table but also the lifting device for raising and lowering the table to prevent damage to them. ..

[Brief description of drawings]

FIG. 1 is a front sectional view of the present invention.

FIG. 2 is a side sectional view of the above.

FIG. 3 is a partially cutaway plan view of the above.

FIG. 4 is a cross-sectional view showing a state in which a table is supported by the above support arm.

FIG. 5 is a drawing showing the furnace box of the same, in which (a) is a plan view and (b) is a sectional view.

FIG. 6 is a side view of the lift device for lifting and lowering the table.

FIG. 7 is a plan view of the lift for lifting and lowering the table.

FIG. 8 is a front view of the lift device for lifting and lowering a table.

FIG. 9 is a drawing showing the central partition plate of the same, in which (a) is a plan view and (b) is a side view.

FIG. 10 is a view showing the above-mentioned end partition plate, in which (a) is a plan view and (b) is a side view.

FIG. 11 (a) is a perspective view of the above-mentioned end partition plate,
FIG. 6B is a sectional view of the end partition plate in a mounted state.

FIG. 12 is a view showing the outer frame of the same, in which (a) is a plan view and (b) is a front view.

FIG. 13 (a) is a bottom view of a mounting portion of the positioning metal fitting, and FIG. 13 (b) is a perspective view of the positioning metal fitting.

FIG. 14 is an exploded perspective view showing the attachment of the outer frame of the same.

FIG. 15 is a drawing showing a state where a joint base is attached to the above-mentioned support base, (a) is a plan view, (b) is a front view, and (c) is a side view.

FIG. 16 is an exploded perspective view showing another embodiment of the above-described support base and joint base.

FIG. 17 is a front view showing the operation unit of the above.

FIG. 18 is a circuit diagram of the above.

FIG. 19 is a cross-sectional view showing a state in which the tatami mat is placed on the slats by lowering the table.

[Explanation of symbols]

 1 Furnace box 2 Lifting device for raising and lowering the table 3 Table 4 Slat 5 Saw support 6 tatami

Claims (1)

[Claims] 1. A lift device for raising and lowering a table for storing the table in the furnace box or projecting upward from the furnace box is provided, and the table of the table is stored with the table stored in the furnace box. An automatic lifting type excavation pit, characterized in that a braces upper support for supporting the slats above is provided in a furnace box, and a tatami mat is removably placed on the slats removably supported on the braces upper support.