JPH0444968Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field] This invention relates to legs for home kotatsu.

[Problems to be solved by conventional technology and ideas] When the kotatsu is not in use, the legs for the conventional home kotatsu are removed from the side frame of the kotatsu body and stored. In other words, the legs are screwed onto the side frame of the kotatsu, and removing them is troublesome and time-consuming.

The purpose of the present invention is to provide legs for a home kotatsu that can be easily and quickly folded and do not get in the way when storing the kotatsu.

[Means to solve the problem]

In order to achieve the above object, in the home kotatsu leg of the present invention, a connecting pin having two parallel surfaces is provided at the upper end of the script body, and a connecting pin is installed in the vertical guide groove provided at the base of the leg. , while inserting the connecting pin, the connecting pin is always resiliently biased upward by a resilient member such as a coil spring attached to the base of the leg, and the thickness of the two parallel surfaces is The vertical guide groove is connected to the keyhole by a vertical groove portion having a width slightly larger than the width dimension, and a lower round hole portion whose inner diameter is set to allow rotation when the connecting pin is inserted. Further, a locking groove with a downward opening is formed at the base of the leg at an upper position of the connecting pin, and a locking pin that is removably locked in the locking groove is attached to the leg of the connecting pin. It is provided at the upper end of the main body.

[Effect]

In use, the locking pin is locked in the locking groove at the base of the leg, and the script body is held vertically without rotating around the connecting pin. In order to bend the script body, it is sufficient to grasp the script body, pull it downward, and rotate the script body around the connecting pin so as to bend the script body. By pulling the script body portion downward, the connecting pin moves downward within the vertical groove portion of the vertical guide groove, fits into the lower round hole portion, and becomes rotatable. By bending the script body, the connecting pin is arranged so that its two parallel surfaces are perpendicular to the vertical groove, and the connecting pin is prevented from moving up and down and is housed in the lower round hole. .

〔Example〕

An embodiment will be described with reference to the drawings. FIG. 1 shows a case where the legs for a home kotatsu according to the present invention are attached to the upper frame 12 shown by imaginary lines,
The legs include a leg base 1 fixed to a downward protrusion 14 of an upper frame 12 with a connector 13 such as a bolt, and a script body bendably connected to the leg base via a connecting pin 4. It consists of part 10. in particular,
The leg base 1 includes a cylindrical covering member 15 made of plastic or the like, and a fixing member 16 made of metal or the like that is inserted into the covering member 15. Note that by screwing the connector 13 into the screw hole 17 of the fixing member 16, the fixing member 16 and the cylindrical covering member 1 can be
5 is fixed to the upper frame 12.

The script body portion 10 includes a cylindrical covered supporting leg member 18 made of plastic or the like, and a rotating member 19 made of metal or the like fixed to the supporting leg member 18. The upper end side of the covering support leg member 18 has a constant curvature centered on the connecting pin 4 when viewed from the side so that the script body portion 10 can be rotated in the direction of arrow C around the connecting pin 4 inside the covering member 15. It is formed into a curved shape. The rotating member 19 is contained within the upper end gap 20 of the supporting leg member 18, and is always resiliently biased upward by a resilient member 5 such as a coil spring via the connecting pin 4.

As shown in FIGS. 1 and 3, the rotating member 19
The left and right side plate portions 23, 23 support both ends of the connecting pin 4 and support both ends of the locking pin 9 provided parallel to the connecting pin 4, and the mounting protrusion 2.
4, 24, and a rear plate portion 25. On the other hand, the fixing member 16 includes left and right side plate parts 26, 26 having vertical guide grooves 2 when both ends of the connecting pin 4 are inserted, hanging piece parts 27, 27 to which the upper end of the elastic member 5 is attached, and a rear part. A plate portion 28 is provided. 21 is a locking hole to which the upper end of the resilient member 5 is secured. The connecting pin 4 provided at the upper end portion 11 of the script body portion 10 is formed in a cross-sectional shape in which both ends of a circle are cut along two parallel chords. 29, 29
is a circumferential groove in which the lower end of the resilient member 5 is locked. Both ends of the connecting pin 4 are connected to the holes 22, 2 of the rotating member 19.
In addition to being fixed by press-fitting etc. into 2,
It is inserted into the vertical guide grooves 2, 2 formed in the side plate parts 26, 26 of the fixing member 16. Guide groove 2
As shown in FIG. 2, the width dimension B is slightly larger than the thickness dimension A of the two parallel surfaces 3, 3 of the connecting pin 4.
a vertical groove portion 6 having a vertical groove portion 6, and a lower round hole portion 7 having an inner diameter dimension D that allows rotation when the connecting pin 4 is inserted.
It is configured in a keyhole shape by and. A downwardly opening locking groove 8 into which the locking pin 9 engages and disengages is provided above the connecting pin 4, and the locking groove 8 cuts out the hanging pieces 27, 27 of the fixing member 16. It was formed by

As shown in FIG. 4, the protrusion 2 of the rotating member 19
4 and 24 are fixed to the upper end side flat portion 30 of the covering support leg member 18 with fixing devices such as screws. and,
The lower end surface of the covering member 15 comes into contact with this flat portion 30, and the entire load is supported by the supporting leg member 18.

To rotate the script body 10 around the base 1 and make it into a bent shape, grasp the script body 10 with your hand and pull it in the downward direction E, as shown in FIGS. 9 and 10. In the hanging state, it can be rotated as shown by arrow C around the connecting pin 4 and bent approximately parallel to the upper frame 12. At this time, as shown in FIG. 5, the connecting pin 4 moves downward within the vertical groove 6 of the vertical guide groove 2, and is fitted into the lower round hole 7 and held therein. At the same time, the locking pin 9 separates from the locking groove 8, and the connecting pin 4 rotates in the direction of the arrow in the round hole 7, as shown in FIG. can be rotated in the direction of arrow C. As shown in FIGS. 7 and 8, the script body part 10
When the connecting pin 4 is turned about 90 degrees from the vertical position and bent, the connecting pin 4 is perpendicular to the vertical groove 6 and is fitted into the lower round hole 7 and contained therein. Therefore,
The connecting pin 4 is pressed against the inner surface of the lower round hole portion 7 to prevent vertical movement (to prevent wobbling), and the script body portion 10 is provided at the lower center of the upper frame 12 (not shown). There will be no problem such as hitting the heater and damaging it. Although not shown, by protruding downward from the upper frame 12 a member that comes into contact with a part of the lower end side of the script body part 10,
With the script body part 10 in an even more stable state,
It can be folded.

As mentioned above, since no operating lever or the like is required for the bending operation, the bending mechanism becomes extremely simple. Moreover, the rotating member 19 is inserted into the upper end side of the inside of the covering support leg member 18, so that it can be made compact.

By simply engaging and disengaging the locking pin 9 from the locking groove 8 and rotating the script body 10 around the connecting pin 4, the script body 10 can be bent or stretched. Therefore, there are no complicated operating parts, the structure is simple, and failures are less likely to occur.

[Effect of idea]

Since the present invention is configured as described above, it produces the effects described below.

When the script body part 10 is in a folded state, it is possible to prevent the script body part 10 from shaking.
Therefore, the heater and the like provided at the lower center of the upper frame 12 will not be damaged.

Folding operations can be performed easily and quickly with one hand.

There is no need for operating levers or the like, and there is no need to provide exposed operating knobs on the upper side of the upper frame 12 or other locations, so they do not get in the way and are favorable in terms of appearance. Furthermore, the operating mechanism for bending is extremely simple.

It can be made durable and sturdy without any failure.

[Brief explanation of the drawing]

Fig. 1 is an enlarged cross-sectional view of the main part showing an embodiment of the present invention, Fig. 2 is an explanatory diagram of the shape and dimensions of the connecting pin and the vertical guide groove, Fig. 3 is an enlarged exploded perspective view of the main part, and Fig. 4
The figure is a cross-sectional view of FIG. 1, FIG. 5 is an enlarged cross-sectional view showing the middle state of folding, FIG. FIG. 8 is an explanatory diagram of the relative positions of the connecting pins at that time, and FIGS. 9 and 10 are explanatory diagrams of their functions. 1... Leg base, 2... Vertical guide groove, 3...
... Parallel surface, 4 ... Connection pin, 5 ... Resilient member, 6
... Vertical groove part, 7 ... Lower round hole part, 8 ... Locking groove,
9... Locking pin, 10... Screen body portion, 11... Upper end portion, A... Thickness dimension, B... Width dimension, D... Inner diameter dimension.

Claims (1)

[Scope of utility model registration request] A connecting pin 4 having two parallel surfaces 3, 3 is provided at the upper end 11 of the script body 10, and the connecting pin 4 is inserted into the vertical guide groove 2 provided at the base of the leg 1. 4 is always elastically biased upward by a resilient member 5 such as a coil spring attached to the leg base 1, and the thickness is slightly smaller than the thickness dimension A of the two parallel surfaces 3, 3. Larger width dimension B
The vertical guide groove 2 is configured in the shape of a keyhole by the vertical groove portion 6 having a vertical groove portion 6 and the lower round hole portion 7 having an inner diameter D that is rotatable when the connecting pin 4 is inserted. Further, a locking groove 8 with a downward opening is formed in the leg base 1 at an upper position of the connecting pin 4, and a locking pin 9 that is removably locked in the locking groove 8 is provided as described above. This leg for a home kotatsu is characterized by being provided at the upper end part 11 of the script body part 10.