JPH0743141B2 - Kotatsu - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kotatsu in which a leg is fixed to a corner of a frame and the leg is foldable.

[0002]

2. Description of the Related Art In a conventional leg folding mechanism, a storage frame is provided in order to cover the leg folding mechanism as much as possible, as disclosed in Japanese Utility Model Publication No. 57-41519. However, there is a drawback in that it is troublesome to combine and fix the accommodation frame and the movable body constituting the bending mechanism, and it is not possible to arrange each of them at a predetermined position.

[0003]

SUMMARY OF THE INVENTION The present invention simplifies the fixing of a support leg, a leg mounting bracket pivotably supported in a foldable manner, and a fixed leg covering the leg mounting bracket, and accurately aligns them. It is something to do.

[0004]

According to the present invention, legs are fixed to the corners of a frame body combined in a frame shape, and a kotatsu blanket or a table plate is placed on the upper surfaces of these legs. In the kotatsu, the leg is a hollow fixed leg with an opening on the lower surface that is fixed to the frame, a leg mounting bracket that is housed and fixed in the fixed leg, and a support that is foldable to the leg mounting bracket via a long axis. A leg, an insertion groove is formed on the left and right of the inner wall of the fixed leg, and insert pieces are formed on both side walls of the leg mounting bracket, and the insert piece is inserted and engaged in the insert groove. To do.

[0005]

[Operation] By inserting and inserting the insert piece of the leg mounting bracket into the insertion groove of the fixed leg, the leg mounting bracket and the fixed leg are automatically engaged and fixed at a predetermined position, and after the fixing, the fixed leg is moved to the left and right. No rattling.

[0006]

[Example] (1) is four frame trees (2) (2) (2)
A frame body in which (2) is combined in a frame shape through a corner metal fitting (3), and legs (4), (4), (4) and (4) are attached to the corner portions. A crosspiece (5) is suspended on the frame body (1), and a heater unit (6) for heating is arranged substantially at the center. A power supply cord (7) is attached to and detached from the heater unit (6). Further, a kotatsu blanket (K) or a table plate (T) is attached to and detached from the upper surfaces of the frame body (1) and the leg body (4). Both sides of the corner metal fitting (3) form insertion pieces (3a) (3a) which are engaged with the grooves (2a) of the frame (2) (2) and fixed with screws (8),
Long strips (3b) (3b) are formed on the upper and lower sides, and a pair of insertion holes (3c) (3c) are formed in the lower strip (3b), and a screw hole (3d) is formed substantially at the center. ) Has been drilled.

The leg (4) is composed of a hollow fixed leg (4a) having an opening on the lower surface and a support leg (4b) rotatably provided on the lower surface of the fixed leg (4a). ing.
The fixed leg (4a) has a pair of steps (10) (10) on which the flange piece (3b) is placed, and the steps (10) (10).
A notch (11) formed between the two, a rectangular elongated hole (12) formed on the upper surface, and an insertion hole (13) facing the screw hole (3d). (14) is a leg mounting bracket fixed to the inner wall of the fixed leg (4a),
A screw hole (14a) facing the thick insertion hole (13) is formed in a substantially central portion, and an insertion groove (15) (15) formed on the inner wall of the fixed leg (4a) is formed on both side walls. The pair of engaging pieces (14d) (14d) (14d), which are formed by bending the inserting pieces (14b) (14b) to be insert-engaged, and have a notch opening (14c) facing the elongated hole (12) on the upper surface 14d) is bent downward, and a mounting piece (14e) is formed in the lower portion for mounting the flange piece (3b) of the corner metal fitting (3) at the notch (11). There is. The insertion groove (15) (1
The fixed leg (4) is formed by ribs (15a) (15a) which are integrally formed with the fixed leg (4a) and extend vertically.
It also reinforces a). The insertion piece (14b) (14b)
Extends vertically on both side walls of the leg mounting bracket (14), and the bent portion is the top plate (1) of the leg mounting bracket (14).
4i) facing both ends. In addition, the above-mentioned piece (1
4e) has a pair of opposing mounting pieces (14f) (1
4f) and a shaft hole (14g) is formed therein, and the insertion hole (3) is formed on the other side of the mounting piece (14e).
c) (3h) and engaging claws (14h) (14)
h) is formed. (18) is an unlocking operation button arranged in the long hole (12), and the long hole (1
Recessed shaft support (20) (2) formed on the opening edge of (2)
0) and locking projections (22) (2) for locking the locking projections (21) (21) from the elongated hole (12).
2) and a pressing piece (23) formed at the lower front end are formed respectively. The upper surface of the unlocking operation button (18) is lower than the opening of the elongated hole (12), and is slightly inward from the upper surface of the fixed leg (4a) so that it does not protrude upward as a whole. I'm trying to sink. (25)
Is a leaf spring having elasticity, which is fixed to the inner surface of the upper portion of the fixed leg (4a) from the lower surface of the button (18) with a screw (26) so as to always hold the button (18) in a horizontal position. .

The supporting leg (4b) is not hollow, and the length of the supporting leg (4a) becomes a leg together with the first inserting portion (28) which is pivotably inserted from the lower opening inside the fixed leg (4a). It is composed of an elongated leg portion (29). The first insertion part (2
The long hole notch (30) is opened from the upper surface to the side surface of 8), the insertion holes (31) (31) are formed on both sides, and the curved surface (32) is formed. Reference numeral (33) is a second insertion portion that is inserted and arranged in the first insertion portion (28), and forms a curved surface (34) that is substantially similar to the curved surface (32) and screws (35) (35). At the screw hole (4) of the first insertion part (28)
1) (41) and screw hole (37) of the second insertion part (33)
It is fixed via (37). A pair of vertical guide pieces (33a) (33) are provided in the second insertion portion (33).
a) and a guide space (s) formed by the guide pieces (33a) (33a) are formed, and an engagement pin (40) is formed in the bottom surface of the guide space (s). (36) is a leg lid that covers the lower surface of the leg (29).

(43) is the first insertion portion (28) and the second
Leg fixing fittings arranged between the insertion part (33) and the fixing pieces (14) (14) which are bored from the insertion holes (31) (31) into the fixing leg (4a); Guide piece (33
a) bent pieces (45) (4) arranged outside (33a)
5), the first protrusions (46) (46) locked to the opening edge of the slotted notch (30), and the first protrusions (46) (4).
The second projecting piece (47) (4) bent in the opposite direction to 6)
7) is formed. The fixing piece (44) (44) is attached to the mounting piece (14) via a long shaft (48) and a screw (49).
The shaft holes (50) and (50) pivotally supported by (f) and (14f) are bored.

Reference numeral (51) is a lock fitting vertically movably disposed between the leg fixing fitting (43) and the guide space (34), and the button (via the slot (30) through the slot (30). 1
8) The locking locking bent piece (51a) facing to 8) and the lower end of the second projecting piece (47) (47) are locked to the retaining projections (53) (53) to prevent upward disengagement. And a spring locking piece (54). The locking bent piece (51
The engaging piece (14d) of the leg fitting (14) is shown in a).
The engagement notch (60) (60) engaged with (14d) is formed. A spring (61) for constantly urging the lock fitting (51) upward is stretched between the spring locking piece (54) and the engagement pin (40). Reference numeral (63) is a bolt for fixing the fixed leg (4a) to the corner metal fitting (3) via the leg mounting metal fitting (14).

Thus, after the leg fixing metal fitting (43) having the lock metal fitting (51), the spring (61) and the leg mounting metal fitting (14) are pivotally supported by the long shaft (48), the lock release operation button ( 18) and the fixed leg (4a) to which the plate spring (25) is attached, simply fix the insertion groove (15) (15) of the fixed leg (4a) and the insertion piece (14b) of the leg mounting bracket (14). ) (14b) and push down the fixed leg (4a). At this time, the fixed leg (4a) has a rib (15a).
Guided by (15a), the insertion hole (13) and the screwing hole (14a) are automatically fitted to each other at a predetermined position.

Then, the bolt (63) is screwed into the screw hole (3d).
And the insertion hole (13), and screwed into the screw hole (14a) to complete the attachment of the leg body (4).

The engagement between the fixed leg (4a) and the support leg (4b) having such a structure is such that the lock fitting (51) is the engaging piece of the leg mounting fitting (14) as shown in FIGS. 2 and 7. (14
d) Overcoming (14d), this lock fitting (51)
Is located between the engagement pieces (14d) (14d) and the front wall of the leg fitting (14), and the engagement notches (60) (60) of the lock fitting (51) are the engagement pieces (14d). (14d), so that the entire support leg (4b) engages with the engaging piece (14d).
The fixed leg (4a) and the support leg (4b) are held in a substantially straight line by being locked to the d) and (14d).

When folding the leg (4), the ninth
As shown in the figure, the lock release operation button (18) is pressed, and the pressing piece (23) presses the locking bent piece (51) of the lock fitting (51).
a) is pushed downward against the spring (61), and the engaging notches (60) (60) and the engaging pieces (14d) (14d)
The engagement between the support leg (4b) and the support leg (4b) is folded in the direction of the arrow via the major axis (48) as shown in FIG.

Therefore, since the upper portion of the support leg (4b) is inserted and engaged with the fixed leg (4a), the degree of reinforcement is improved at the insertion portion, and the support leg (4b) and the fixed leg (4a) are improved.
Since the lock with the engaging piece (14d) and the release thereof are performed on the upper surface of the support leg (4b), the user does not accidentally touch and release the lock during normal use. It will disappear. That is, this part is covered with the table plate (T) and the kotatsu futon (K). Moreover, since the unlocking operation button (18) is recessed inwardly from the upper surface of the fixed leg (4a), the table plate (T) and the kotatsu futon (K) are attached to the leg (4).
The operation button (18) will not be inadvertently pressed even if it is placed above.

[0016]

As described above, according to the present invention, since the insertion piece of the leg mounting member is inserted and engaged with the insertion groove of the fixed leg, the fixing of the fixed leg becomes easy and each of them is set at a predetermined position. To be done. Further, the hollow fixed leg is originally liable to be deformed or damaged by an external force, but it is reinforced by the insertion engagement of the insertion piece so that rattling does not occur.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a fixing leg and a leg mounting bracket of a kotatsu of the present invention.

FIG. 2 is an external perspective view of the kotatsu.

FIG. 3 is a sectional view of a leg body of the same.

FIG. 4 is an operation explanatory view during folding of the legs.

FIG. 5 is an explanatory diagram of the operation when the legs are folded.

6 is a cross-sectional view of FIG.

FIG. 7 is a perspective view of a frame and corner fittings and a perspective view of legs.

FIG. 8 is a perspective view of a leg fixing member and a second insertion portion.

FIG. 9 is a cross-sectional view of a leg when a table plate is used.

FIG. 10 is a cross-sectional view when a table plate and a kotatsu futon are used.

FIG. 11 is an operation explanatory diagram when the legs are folded.

[Explanation of symbols]

 1 Frame 4 Leg 4a Fixed leg 4b Support leg 14 Leg mounting bracket 14b Insertion piece 15 Insertion groove 48 Long axis

Claims (1)

[Claims] 1. A kotatsu in which legs are fixed to the corners of a frame body combined in a frame shape, and a kotatsu bedding or a table plate is placed on the upper surfaces of the legs, wherein the legs are: The hollow fixed leg having an opening on the lower surface fixed to the frame body, the leg mounting metal fitting stored and fixed in the fixed leg, and the supporting leg foldable to the leg mounting metal via the long axis, An insert groove is formed on the left and right of the inner wall of the leg, and insert pieces are formed on both side walls of the leg fitting, and the insert piece is inserted into and engaged with the insert groove.