JPH0689897B2 - 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) Prior art Generally, a frame body formed by a plurality of crosspieces and a leg supporting the frame are fixed to each other between end portions of adjacent crosspieces as disclosed in, for example, Japanese Utility Model Publication No. 58-46356. The leg bolts were inserted into the through holes of the leg fittings that were connected to each other and fixed with nuts.

However, the alignment of the bolt and the through hole is troublesome, and it takes time to attach the four legs, and the assembly is troublesome at the start of use in winter. Further, it is known that a leg fixed to a frame is freely bendable, 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, from the viewpoint of cost, the quality of the material of the crosspiece constituting the frame is poor, or the thickness of the crosspiece is thin, so that the weight of the entire frame becomes light and the legs themselves as well as that. Sufficient strength was not applied to the bent portion (shaft support). 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. Since a heavy person rides above the frame, the legs will open extremely outwards, the bent part will be deformed, and unreasonable force will be applied to the shaft pin of the bent part. There was a drawback that the shaft pin was broken.

In particular, in the case where the legs are fixed to the frame by tightening and fixing the bolts, the ends of the crosspieces directly contact the side surfaces of the legs as they are tightened, and the ends of the crosspieces are cracked or do not make sufficient contact with the side surfaces of the legs. It made the appearance worse.

(C) Problem to be Solved by the Invention According to the present invention, the frame body and the legs are easily and securely attached and fixed to strengthen the frame body, and the load applied to the frame body is passed through the upper hinge cover. It is distributed to those that transmit to the support legs and those that transmit to the support legs through the leg mounting bracket, the upper hinge body, and the lower hinge body to protect the pivotally connected part and at the time of standing of the support legs, the frame body and the legs. The object is to prevent rattling of the body and to prevent damage to the outer rail even if the end portion of the outer rail and the upper hinge cover come into contact with each other when the bolt is fixed.

(D) Means for Solving the Problem The present invention is to fix an inner rail formed by intersecting and combining a plurality of inner rails, a plurality of outer rails surrounding the inner rail and end portions of the outer rails adjacent to each other. And a leg body fixed to the leg mount, the leg body includes a support leg, a lower hinge body provided above the support leg, and the leg. An upper hinge body fixed to a mounting bracket and axially supported by the lower hinge body, and an upper hinge cover that covers the upper hinge body and has mounting step portions on both sides thereof, and adjacent end portions of the outer rails. Is placed on the mounting step portion, the upper part of the leg is located between the ends of the outer rail, and the upper hinge body and the leg mounting member are fixed by bolts.

Further, the lower end of the upper hinge cover is brought into contact with the upper portion of the support leg when the leg is erected.

(E) Action In the present invention, the end of the outer bar is placed on the stepped portion of the leg and the upper part of the leg is positioned and fixed between the ends of the outer bar. The crosspiece and the leg are easily aligned with each other, and the upper part of the leg does not shift the distance between the ends of the outer crosspiece, so that the frame is firmly attached. And
Even if the end of the outer bar comes into contact with the lateral side of the mounting step as the bolts are tightened and fixed, a small amount of movement is absorbed by the deformation of the upper hinge cover to prevent the end of the outer bar from cracking, or to prevent the outer bar from breaking. Reduce the gap between the end of the and the upper hinge cover.

Furthermore, since the lower end of the upper hinge cover is applied to the upper part of the supporting leg when the legs are standing, it is possible to prevent the load of the frame from being applied to the upper hinge body and to protect the pivotal joints of the upper hinge body and the lower hinge body. Also, prevent rattling of the frame and legs.

(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) indicates a frame body, and a plurality of inner rails (2a) (2b) (2c) (2d) are crossed and combined, and (3a) (3b) (3c) (3d) of the inner rails. The outer bars that are formed in a rectangular shape surrounding the outside of each are shown.
(4a), (4b), (4c), and (4d) are side U-shaped leg mounting brackets fixed to the ends of adjacent outer bars by screws (5) and (5). A hole (6) is provided and a plurality of locking holes (7) and (7) are formed on the lower surface.

(8a), (8b), (8c), and (8d) are legs fixed to the leg mounting brackets (4a) ... and pivotally attached so as to be bendable, which will be described in detail below. (9) is an upper hinge body which is formed of a thick metal plate and has a planar cross-sectional shape, and which has a flat upper surface and is bent downward toward the center of the stopper claw (10) (10) to form a stopper claw ( 11) (11) and a bolt hole (12) formed in the front surface, a plurality of locking claws (13) (13) protruding forward and bent upward at the lower end of the front surface, and a pin hole ( 14)
(14) is provided, and the lower end edge of the side surface is further provided with the pin hole (14).
Guide pieces (15) (15) bent outward are formed on the lower part of the side surface while being positioned below (14).
Reference numeral (16) is an upper hinge cover for covering the upper hinge body (9), and a storage space (1) in which bearing grooves (17) and (17) are formed in the upper portion.
8) and square holes (19) (19), and mounting steps (20) (20) for mounting the ends (3a-1) (3d-1) of the outer rail on both sides.
And engaging holes (21) (21) are formed near the mounting step. (22) is a lock button housed in the housing space (18), and the shaft pin (23) (23) provided on one side is locked to the bearing groove (17) (17) and provided on the other side. The plurality of pressing claws (24) (24) are constantly pressed upward by the spring (25). (26) is a rubber seat for slip prevention of the top plate (T) which is inserted into the square holes (19) (19) of the upper hinge cover (16), and (27) and (27) are ones on the opposite sides. Side protrusion (2
8) Elastic pieces (29) (29) having (28) are provided, and engaging pieces (31) (31) having hooking claws (30) (30) formed at upper ends are provided adjacent to the elastic pieces. It is a makeup cover.

(32) is a hinge pin, and (33) is an E-ring for preventing the hinge pin from coming off.

(34) is a lower hinge body having a plane cross-sectional shape formed of a thick metal plate, and has a plurality of pin holes (35) (3
5) is provided, and seat plates (37) (37) having screw insertion holes (36) (36) are formed in the lower part of the side surface. The guide cavity (39) is provided on the front surface of the (38), and a pair of vertically long ribs (40) (40) and a stopper rib (41) are formed on the inner wall of the guide cavity, and screw holes (42) ( A fixed base formed by forming fixed step portions (43) and (43) in which (42) is bored, and (44) is arranged in the guide space (39) and is always a spring (45).
An actuator that is pushed up by a stopper (46) that hits the stopper rib (41) and prevents the stopper rib (46) from popping out upward, and a latching claw (4) having inclined portions (47) (47) respectively.
8) (48) and hook-shaped pressing pieces (49) (49) are formed.

(50) is a support leg made of synthetic resin, and a plurality of long holes (51) (51) (51) (51) are provided on the upper part and screw insertion holes (52) (52) are provided on the lower parts on both sides. A synthetic resin cavity having mounting flat portions (53) (53) is composed of a lower hinge cover (54) and hollow leg portions (55) integrally provided under the lower hinge cover. (56) is a leg cap fitted and fixed to the lower end of the leg portion (55).

Next, the assembly sequence will be described.

First, insert the lower hinge body (34) from the lower part of the leg (55), and provide the pin holes (37) (37) on both sides of the mounting flat portions (53) (53) of the lower hinge cover (54). The seat plates (37) (37) exposed through the notches (57) (57) and the lower hinge cover (54).
The mounting flat portions (53) (53) are overlapped with the lower surface of the mounting flat portions (53) (53) to align the screw insertion holes (36) (36) with the screw holes (42) (42). In this state, the pin holes (14) (14) of the upper hinge body (9) and the pin holes (35) (35) of the lower hinge body (54) are aligned with each other and the hinge pin (32) is inserted therethrough to insert the E ring (33). ) To prevent it from coming off.

Then, the actuator (44) and the spring (45) are housed in the guide space (39) of the fixed base (38), and the stopper (46).
With the stopper rib (41) in contact, the fixing base (38) is inserted from the lower part of the leg (55), and the upper surface of the fixed step (43) (43) is inserted with the seat plate (37) (37) interposed. And lower hinge cover (54)
Place the flat part (53) of the (53) (53) underside and screw (58)
(58) screw through hole (52) (52) and screw through hole (36)
After screwing the screw holes (42) and (42) of the fixing base (38) through the (36) to integrate the leg portion (55), the lower hinge body (34) and the fixing base (38), the leg cap. Fit (56) the lower end of leg (55) and fix. At this time, the hooks (48) (4) of the actuator (44)
8) and the pressing pieces (49) (49) are respectively elongated holes (51) (51) (5
1) Go to (51).

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 clamped and fixed between the inner wall of the upper hinge cover (16) and the upper surface of the upper hinge body (9).

Then the elastic pieces (29) (29) of the makeup cover (27) (27)
Is fitted inside the guide pieces (15) (15), and the engaging pieces (31)
When the (31) is pushed along the outer wall surface of the upper hinge body (9), the hooking pieces (30) (30) engage with the engaging holes (21) (21) of the upper hinge cover (16) and the elastic pieces. (29) (29) protrusion (2
8) (28) is pressed against the outer wall surface of the lower hinge covers (54) (54) located above the mounting flat portions (53) (53).

In the support leg (50) assembled in this manner, the ends (3a-1) and (3d-1) of the adjacent outer crosspieces (3a) and (3d) are attached to the upper hinge cover (16). Place it on the section (20) (20),
By positioning the upper part of the upper hinge cover (16) between the ends of the outer crosspiece, the insertion hole (6) of the leg mounting bracket (4a) and the bolt hole (12) of the upper hinge body (9) are aligned with each other. 1 and 2
As shown in the figure, the outer edge of the frame (2) and the upper hinge cover (16)
The outer peripheral edge of the rectangular kotatsu body (1) is substantially flush with the outer peripheral edge of the rectangular kotatsu body (1). At the same time, attach the stopper claws (13) (13) of the upper hinge body (9) to the leg mounting bracket (4a).
And the bolt (59) through the upper hinge cover (16), and is inserted into the hole (6) for inserting the leg mounting bracket (4a).
, And is screwed and fixed to the bolt hole (12) of the upper hinge body (9) so as to be pivotally attached to the kotatsu body (1) in a freely bendable manner.

However, as the bolt (59) is screwed and fixed, the leg fitting (4a), the upper hinge body (9), and the upper hinge cover (1).
6) makes an inquiry, and along with this inquiry, the outer bar (3a) (3
The end surfaces (3a-1) and (3b-1) of (d) are placed on the mounting step (2
0) Moves while being placed on (20) and hits the side surface of the upper hinge cover (16). At this time, even if the bolt (59) is slightly tightened too much, the deformation of the upper hinge cover (16) can absorb the movement of the ends (3a-1) and (3d-1), and conversely tighten the bolt (5a). If it does not, the upper hinge cover (16) is not deformed, and the clearance between the upper hinge cover and the end is reduced.

Thus, when the support leg (50) is to be erected, when the support leg (50) is pulled outward from the bent state to the erected state as shown in FIGS. 4 and 7, the support leg (50) is The protrusions (28) and (28) are brought into sliding contact with both side wall surfaces of the lower hinge cover (54) (see the locus of the chain double-dashed line of the protrusions (28) and (28) in FIG. 7) due to the rotation of the support leg ( 50) rotates gradually without rattling. When the support leg (50) is further rotated, the upper ends of the hooks (48) (48) of the actuator (44) are moved to the upper hinge body (9).
Of the stopper pieces (11) (11) are slidably contacted with the inclined portions (10) (10) of the stopper pieces (11) (11), and the operator (44) is lowered against the spring (45) in accordance with the slidable contact. Eventually, when the support leg (50) is in a completely upright position, the hook (48) of the actuator (44) is retained.
(48) is a stopper piece (11) (11) of the upper hinge body (9)
Is locked on the front side of the upper hinge cover (16) and the lower end of the upper hinge cover (16) is placed on the flat portion (53) of the supporting leg (50).
Hit (53). When the support legs (50) are erected in this manner, most of the lower ends of the upper hinge bodies (9) are passed through a part of the decorative covers (27) (27) (indirectly) as shown in FIG. The load applied to the mounting flat parts (53) (53) of the lower hinge cover (54) on the upper part of the support leg (50) and the load applied to the frame (2) is mounted flat from the upper hinge cover (16). Department (53) (53)
Strongly join in. Even if the supporting leg (50) is pulled in the direction of arrow A in FIG. 4, most of the load is from the mounting flat portions (53) (53) of the lower hinge cover (54) to the upper hinge body (9).
And transmitted to the upper hinge cover (16) and further transmitted to the leg fittings (4a) by the stopper claws (13) and (13) to be dispersed. Further, the load applied to the hinge pin (32) is transmitted to the upper hinge body (9) and is transmitted to the leg fittings by the stopper claws (13) (13) to be dispersed. When the support leg (50) is pulled in the direction of arrow B in FIG. 4, most of the load is pulled in the same manner as when pulled in the direction of arrow A.
It is transmitted from the mounting flat parts (53) (53) of 4) to the upper hinge body (9), and via the stopper claws (13) (13), the leg mounting bracket (4
a) and the hooks (48) (4) of the actuator (44)
8) and the stopper claws (11) (11) of the upper hinge body (9) are restrained by the engagement. 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) Although the weight is applied to the upper hinge body (9) via the, it is transmitted to the mounting flat portions (53) (53) through the upper hinge body (9) and directly transmitted to the support leg (50).

When the support leg (50) is bent, when the lock button (22) is pressed as shown by the arrow in FIG. 5, the pressing claw (2) is pressed.
4) (24) presses the pressing pieces (49) (49) and the hooks (48)
Disengage the engagement between (48) and the stopper claws (11) (11), and press the lower part of the support leg (50) in the direction of the arrow in FIG. 5 to bend it. In this way, four support legs (50) (50) (50) (5
FIG. 2 shows a state in which 0) is bent.

FIG. 9 shows another embodiment of the upper hinge body (9), in which flat plate portions (60) (60) bent horizontally are provided at the lower part, and the flat plate portion is directly lowered as shown in FIG. Hinge covers (54)
It is mounted on the mounting flat part (53) (53). In this case, the lower surface of the decorative covers (61) (61) becomes smaller.

(G) Effect of the Invention As described above, according to the present invention, the position of the outer rail and the leg body can be easily adjusted at the time of mounting and fixing, and the distance between the ends of the outer rail does not shift due to the upper portion of the leg body. The frame is firmly attached to. Also, even if the end of the outer bar comes into contact with the lateral side surface of the mounting step due to the tightening of the bolts, a small amount of movement is absorbed by the deformation of the upper hinge cover to prevent the end of the outer bar from cracking, The gap between the end portion of the crosspiece and the upper hinge cover can be reduced, resulting in a good appearance.

Further, since the lower end of the upper hinge cover is applied to the upper part of the support leg when the leg is erected, it is possible to prevent the load of the frame from being applied to the upper hinge body and to prevent the upper hinge body and the lower hinge body from being pivotally connected. It is possible to protect and prevent rattling of the frame and legs.

[Brief description of drawings]

FIG. 1 is a perspective view of a kotatsu body provided with a leg device of the present invention,
2 is the same perspective view when the legs are folded, FIG. 3 is an exploded perspective view of an essential part of FIG. 1, FIG. 4 is an enlarged sectional view of an essential part when a top plate is placed, and FIG. Is an enlarged cross-sectional view of the main part before folding the leg, FIG. 6 is an enlarged cross-sectional view of the main part of the leg, FIG. 7 is an explanatory view of the operation when the leg is folded, and FIG. 8 is an enlarged main part of the leg. Sectional view, FIG. 9 is a perspective view showing another embodiment of the upper hinge body,
FIG. 10 is an enlarged cross-sectional view of a main part of a leg showing another embodiment. (1) ... Kotatsu body, (2) ... Frame, (2a) (2b) (2
c) (2d) ... inner rail, (3a) (3b) (3c) (3d) ... outer rail,
(3a-1), (3d-1) ... end, (4a) (4b) (4c)
(4d) ... leg mounting bracket, (8a) (8b) (8c) (8d) ... leg, (9) ... upper hinge body, (34) ... lower hinge body, (50)
... supporting legs.

Claims (2)

[Claims] 1. A frame composed of an inner rail formed by intersecting and combining a plurality of outer rails, a plurality of outer rails surrounding the outer side of the inner rail, and a leg mounting metal fitting fixed between end portions of the outer rails adjacent to each other. A body and a leg body fixed to the leg mounting bracket, the leg body includes a supporting leg, a lower hinge body provided on an upper portion of the supporting leg, and the lower hinge body fixed to the leg mounting bracket. And an upper hinge body that is pivotally supported, and an upper hinge cover that covers the upper hinge body and has mounting step portions formed on both sides thereof, and places the adjacent ends of the outer rails on the mounting step portion. In addition, the leg device of the frame body, characterized in that the upper part of the leg body is located between the end portions of the outer crosspiece and the upper hinge body and the leg mounting metal fitting are fixed by bolts. 2. The leg device for a frame body according to claim 1, wherein a lower end of the upper hinge cover is brought into contact with an upper portion of the support leg when the leg body stands up.