JPH0689896B2 - Frame leg device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a leg device of a frame body having a relatively heavy weight, which is called a furniture-like kotatsu.

(B) Conventional technology Conventionally, a leg which is fixed to a frame and is freely bendable is well known, and the prior art thereof is, for example, Japanese Utility Model Publication No. 50-44400. However, in the case of the above-mentioned prior art, the quality of the material of the crosspiece forming the frame is poor from the viewpoint of cost,
Since the crosspieces are thin, the weight of the entire frame is reduced, and not only the legs themselves but also the bent portions (shaft supporting portions) are not sufficiently strong. Also, when the legs are erected, the lower ends of the legs are tilted so that they open outward to prevent rattling in the left-right direction of the frame, but in reality, the legs themselves are thin and bent as described above. Is not strong enough,
When a heavy person rides above the frame, the legs open extremely outwards, the bent part is deformed, and there is a drawback that the shaft pin of the bent part is broken due to unreasonable force. . Further, the shaft support portion axially supports the upper hinge body fixed to the frame body side and the lower hinge body fixed to the support leg side with a shaft pin, but when the long support leg is always bent or stood up. Since the gripping operation is performed, the load of the pivotal portion at this time is applied more to the upper hinge body on the short leg mounting bracket side than to the lower hinge body on the long supporting leg side, and the upper hinge body is If it is deformed or twisted to hinder the bending and standing motion of the support legs, and if the load on the frame side is large, an unreasonable force is applied to the shaft pin and the lower edge of the upper hinge body as described above. For example, the lower hinge cover hits the upper hinge cover and the hinge cover is damaged, so that it cannot be reliably transmitted to the supporting leg side.

(C) Problems to be Solved by the Invention The present invention increases the strength of an upper hinge body pivotally attached to a lower hinge body of a support leg and configured to bend the support leg, and directly applies a load applied to a frame body. It is transmitted to the support leg to protect the pivotal support portion between the upper hinge body and the lower hinge body.

(D) Means for Solving the Problems The present invention relates to an inner rail formed by crossing and combining a plurality of inner rails, a plurality of outer rails surrounding the inner rail and a leg mounting fixed between the outer rails adjacent to each other. A frame body composed of metal fittings, and a leg body fixed to the frame body and pivotally attached so as to be bendable. The leg body includes an upper hinge body fixed to the leg mounting metal fittings, and a shaft attached to the upper hinge body. The lower hinge body is supported, and the lower hinge body is housed and fixed, and the supporting legs are provided with lower hinge covers having flat portions placed on both sides of the upper outer wall. A flat plate portion is provided that is bent in the horizontal direction below the pivotal support portion of the upper hinge body, and the flat plate portion is brought into contact with the mounting flat portion when the support leg is erected.

(E) Action The present invention provides the flat plate portion, so that when the support leg is bent, the upper hinge body is deformed or twisted by the load applied to the upper hinge body via the lower hinge body on the support leg side. The flat plate part of the upper hinge body contacts the flat plate part of the lower hinge cover when the supporting legs are erected against the frame body, and the load applied to the frame body is directly applied to the flat plate part of the upper hinge body ( Surface) to the supporting leg.

(F) Embodiments Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an external perspective view of the yagura kotatsu body (1). (2) is a rectangular frame body and is constituted by the following members. (2a) (2b)
(2c) and (2d) are multiple inner rails that are crossed and combined,
(3a), (3b), (3c) and (3d) are outer bars formed in a rectangular shape by surrounding the outer sides of the inner bars, and (4a), (4b), (4c) and (4d) are adjacent to the outer bars. A leg mounting bracket having a U-shaped side face fixed to the ends of the outer crosspieces with screws (5) and (5). Bolt insertion holes (6) are provided on the front surface and a plurality of locking holes (7) are provided on the lower surface.
(7) is drilled.

(8a) (8b) (8c) (8d) is the leg mounting bracket (4a) ...
It is a leg fixed to (4d) and pivotally attached so that it can be bent freely. (9) is an upper hinge body formed of a thick metal plate, and has stopper claws (11) and (11) that have a flat upper surface and are bent downward at the center side to form inclined sections (10) and (10). A bolt hole (12) is formed in the front surface, a plurality of locking holes (13) (13) protruding forward and bent slightly upward are formed at the lower end of the front surface, and pin holes (14) (14) are formed in the lower portions of the side surfaces. )
Is provided. Further, the upper hinge body (9) has lower end edges of side surfaces located below the pin holes (14) (14), and flat plate portions (15) (15) bent horizontally in the lower portions on both sides. It is formed integrally. Reference numeral (16) is an upper hinge cover for covering the upper hinge body (9), and a storage space (18) and a square hole (19) each having a bearing groove (17) (17) formed in an upper portion thereof.
(19) is formed, and the stepped portions (20) (20) of the crosspiece are formed on both sides of the upper outer wall, and the engagement holes (21) (21) are formed near the stepped portion. ing. (22) is a lock button housed in the housing space (18), which locks the shaft pins (23) (23) provided on one side with the bearing grooves (17) (17) and the other side. A plurality of pressing claws (24) (24) provided on the spring (25)
It is always pushed upwards by. Reference numeral (26) is a rubber seat for slipping prevention of the top plate (T) which is inserted into the square holes (19) and (19) of the upper hinge cover (16) and partially protrudes.

(27) is a hinge pin, and (28) is an E-ring for preventing the hinge pin from coming off.

(29) is a lower hinge body formed of a thick metal plate, and a seat plate having a plurality of pin holes (30) (30) on the front side and screw insertion holes (31) (31) formed on the lower portion of the side surface. (32) (32)
Is formed. (33) is a fixed base with a guide space (34) provided on the front surface, and a pair of vertically long ribs (35) (35) and stopper ribs (36) are formed on the inner wall of the guide space and screw holes are formed on both sides. The fixed step portions (38) and (38) are formed by drilling (37) and (37). Reference numeral (39) is an actuator which is disposed in the guide space (34) and is constantly pushed up by a spring (40). The actuator (39) and the stopper (41) are provided to prevent the stopper rib (36) from jumping upward. Sloped part (42)
Hooking claws (43) (43) having (42) and hook-shaped pressing pieces (4
4) (44) is formed.

(45) is a support leg made of synthetic resin, and a plurality of elongated holes (46) (46) (46) (46) are provided in the upper part and screw insertion holes (47) (47) are provided on both sides of the upper outer wall. Mounting flat part (48)
(48) made of synthetic resin and has a lower hinge cover (4
9) and a hollow leg portion (50) integrally provided on the lower portion of the lower hinge cover. Reference numeral (51) is a leg cap fitted and fixed to the lower end of the leg portion (50).

Next, the assembly sequence will be described.

First, insert the lower hinge body (29) from the lower part of the leg (50), and provide the pin holes (30) (30) on both sides of the mounting flat parts (48) (48) of the lower hinge cover (49). Exposed from the notches (52) (52) and seat plate (32) (32) to the lower hinge cover (49)
Of the mounting flat portions (48) (48) are overlapped with each other to align the screw insertion holes (31) (31) with the screw holes (37) (37). In this state, the pin holes (14) and (14) of the upper hinge body (9) and the pin holes (30) and (30) of the lower hinge body (29) are aligned with each other and the hinge pin (27) is inserted to insert the E ring (28). ) To prevent the shaft from coming off and form the shaft support (53).

Then, the actuator (39) and the spring (40) are housed in the guide space (34) of the fixed base (33), and the stopper (41).
With the stopper rib (36) in contact, the fixed base (33) is inserted from the lower part of the leg (50), and the upper surface of the fixed step (38) (38) with the seat plate (32) (32) interposed. And lower hinge covers (49)
The lower surface of the mounting flat part (48) (48) is overlapped with the screw (54)
(54) screw through hole (47) (47) and screw through hole (31)
After fixing the leg part (50), the lower hinge body (29) and the fixing base (33) by screwing them into the screw holes (37) and (37) of the fixing base (33) via the (31), the leg cap. Fit (51) the lower end of leg (50) and fix. At this time, the catch claw (43) of the actuator (39)
(43) and the long holes (46) (46) of the pressing pieces (44) (44), respectively.
(46) Face (46).

Then, insert the rubber seat (26) into the square holes (19) and (19) of the upper hinge cover (16), and the front side is the spring (25).
The lock button (22) is housed in the housing space (18) and the upper hinge body (9) is housed in the upper hinge cover (16) while being urged to be constantly pushed upward by. At this time, the rubber seat (26) is sandwiched and fixed between the inner wall of the upper hinge cover (16) and the upper surface of the upper hinge body (9).

After that, as shown in FIG. 7, the decorative covers (55) (55)
It is fitted inside the flat plate portions (15) (15) and pushed along the inner wall surface of the lower hinge cover (49) to be fixed.

The support leg (45) assembled as described above locks the stopper claws (13) (13) of the upper hinge body (9) with the locking holes (7) (7) of the leg mounting bracket (4a). Then, the bolt (56) is inserted into the insertion hole (6) of the leg mounting bracket (4a) and screwed and fixed to the bolt hole (12) of the upper hinge body (9), so that the kotatsu body (1) is fixed. It is pivotally attached so that it can be bent.

Thus, when the support leg (45) is to be erected, the support leg (45) shown by the alternate long and two short dashes line in FIG.
When the support leg (45) is further rotated in the process of pulling outward as shown by the solid line in the figure to move to the standing state shown in FIG. 4, the hooks (43) (43) of the actuator (39) The upper end is in sliding contact with the inclined portions (10) (10) of the stopper pieces (11) (11) of the upper hinge body (9), and the operator (39) is resisted against the spring (40) by this sliding contact. To descend. Eventually,
When the support leg (45) is in the completely upright position shown in FIG. 4,
The hooks (43) (43) of the actuator (39) are the upper hinge body (9).
The stopper pieces (11) (11) are caught on the front side and locked. When the support legs (45) are erected, the flat plate portions (15) (15) of the upper hinge body (9) hit the mounting flat portions (48) (48) of the lower hinge cover (49) as shown in FIG. , Even if the support leg (45) is pulled in the direction of arrow A in FIG. Is further transmitted to the leg mounting bracket (4a) by the stopper claws (13) (13) and is dispersed. Also, the load applied to the hinge pin (27) is transmitted to the upper hinge body (9) and the stopper claws (13) (1
3) Disperses after being transmitted to the leg mounting bracket. Support legs (4
If 5) is pulled in the direction of arrow B in FIG.
As in the case of pulling in the same direction, most of the load is transmitted from the mounting flat parts (48) (48) of the lower hinge cover (49) to the upper hinge body (9) and the stopper claws (13) (13) are transferred. Through the leg mounting bracket (4a) and the hooks (43) (43) of the actuator (39) and the stopper hooks (11) of the upper hinge body (9).
It is suppressed by the engagement of (11). Then, when the top plate (T) is placed on the upper surface of the kotatsu body (1) as shown in FIG. 4 and a person rides on the top plate (T), the rubber seat (26) The weight is added to the upper hinge body (9) via the, but this weight is the flat plate portion (15) (15) of the upper hinge body (9).
It is transmitted to the mounting flat portions (48) (48) through the and is directly transmitted to the support legs (45).

When the support leg (45) is bent, pressing the lock button (22) as shown by the arrow in FIG.
4) (24) presses the pressing pieces (44) (44), and the hooks (43)
The engagement between (43) and the stopper claws (11) (11) is released, and the lower portion of the support leg (45) is pushed in the direction of the arrow in FIG. In this way four support legs (45) (45) (45) (4
FIG. 2 shows a state in which 5) is bent.

(G) Effect of the Invention As described above, according to the present invention, since the upper hinge body is provided with the flat plate portion that comes into contact with the mounting flat portion of the lower hinge cover that accommodates the lower hinge body when the supporting leg stands up, Even if stress is applied to the upper hinge body due to bending or standing up, the flat plate portion receives the stress and prevents the upper hinge body from being deformed or twisted.

Further, since the flat plate portion of the upper hinge body contacts the mounting flat portion of the support leg when the support leg is erected, the upper hinge body and the support leg can be brought into contact with each other without causing damage to the surface of the lower hinge cover. The load applied to the upper hinge body can be directly transmitted to the support leg, and the shaft support can be protected.

Further, since the flat plate portion is provided below the shaft supporting portion of the upper hinge body, it is of course possible to prevent the load of the frame body from being applied to the shaft supporting portion as described above.
It is possible to prevent the shaft support from being exposed and becoming unsightly.

[Brief description of drawings]

FIG. 1 is a perspective view of a kotatsu body provided with a leg device of the present invention, FIG. 2 is a perspective view when the legs are folded, and FIG.
FIG. 4 is an exploded perspective view of an essential part of the figure, FIG. 4 is an enlarged sectional view of an essential part when a top plate is placed, FIG. 5 is an enlarged sectional view of an essential part before the legs are folded, and FIG. 6 is a leg folded. 7 is an enlarged cross-sectional view of the main part of the leg body. (1) ... Kotatsu body, (2) ... Frame, (2a) (2b) (2
c) (2d) ... inner rail, (3a) (3b) (3c) (3d) ... outer rail,
(4a) (4b) (4c) (4d) ... leg mounting bracket, (8a) (8b)
(8c) (d) ... leg body, (9) ... upper hinge body, (15) (1
5) ... flat plate part, (29) ... lower hinge body, (48) (48) ... mounting flat part, (45) ... supporting leg, (49) ... lower hinge cover,
(53)… Shaft support.

Claims (1)

[Claims] 1. A frame body comprising an inner rail formed by crossing and combining a plurality of the outer rails, a plurality of outer rails surrounding the inner rail and a leg mounting member fixed between the outer rails adjacent to each other. The leg body is fixed to the frame body and is pivotally attached so as to be bendable. The leg body includes an upper hinge body fixed to a leg mounting member, a lower hinge body pivotally supported by the upper hinge body, and the lower body. A support leg having a lower hinge cover that houses and fixes the hinge body and is provided with mounting flat portions on both sides of an upper outer wall, and is integrally provided on both sides of the upper hinge body and is a pivotal support portion of the upper hinge body. A leg device for a frame, characterized in that a flat plate portion that is bent downward in the horizontal direction is provided, and the flat plate portion abuts against the mounting flat portion when the support leg stands up.