JPH0724608B2 - Frame leg device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frame leg device having a foldable leg.

[0002]

2. Description of the Related Art Conventionally, a structure in which legs fixed to a frame are configured to be freely bendable is known, for example, from Japanese Utility Model Publication No. 49-33924, which has a mounting seat plate fixed to a frame and legs. The fixed support fitting is pivotally supported by a core rod so that the leg can be bent.

Further, the standing of the legs is held by fitting an operating rod provided on the side of the support fitting into a retaining groove provided on the mounting seat plate.

[0004]

However, since the upright state of the leg is maintained by the engagement of a part of the operating rod and the retaining groove at one place, the leg is laterally supported in the upright state. When an external force is applied from the direction, the legs are firmly held on the side of the hooking portion, but there is no hooking portion on the side opposite to the side of the hooking portion, which causes the leg to rattle.

[0005]

SUMMARY OF THE INVENTION According to the present invention, a frame body in which a plurality of inner rails and outer rails are combined to fix adjacent outer rails by leg mounting brackets, and the frame body is fixed to the leg mounting brackets and is bendable. An upper hinge body having a plurality of stopper pieces that are fixed to the leg mounting member and are bent in parallel downward from an upper flat surface, and A lower hinge body pivotally supported by the hinge body, a support leg having the lower hinge body installed therein, and a plurality of latching pawls housed in the support leg body and arranged in parallel with each other so as to be constantly pushed up by a spring. Each of the stopper pieces is hooked on each of the hooking pawls to hold the legs in an upright state.

[0006]

When the leg is in the upright state, the latching claw of the operator and the stopper piece are contacted, and the latching claw descends against the spring and latches with the stopper piece. The state is maintained by the biasing force of the spring. In addition, this holding state is performed by locking a plurality of stopper pieces and locking claws at a plurality of positions. The upper hinge body on the frame body side and the lower hinge body of the support leg are at the shaft support portion and a plurality of locations. The legs are securely held by the hooks and the legs do not rattle to the left and right.

[0007]

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. (2
a) (2b) (2c) (2d) are a plurality of inner gussets that are intersected and combined, and (3a) (3b) (3c) (3d) is a rectangular shape that surrounds the outside of each of the inner ledges. Formed outer bar, (4
Reference numerals a), (4b), (4c), and (4d) denote side U-shaped leg fittings fixed to the ends of adjacent outer rails with screws (5) and (5). (6) is provided and a plurality of locking holes (7) and (7) are formed in the lower surface.

Numerals (8a), (8b), (8c), and (8d) are legs fixed to the leg fittings (4a) ... and pivotally attached so as to be bendable, which will be described in detail below. (9) is a flat U-shaped upper hinge body formed of a thick metal plate, and has upper portions as flat surfaces (9a) and (9a), each of which is bent downward in parallel to the center side thereof and an inclined portion (10). Stopper pieces (11) (11) formed with (10) and bolt holes (12) on the front surface.
A plurality of locking claws (13) (13) projecting to the front side at the lower end of the front surface and bending upward and projecting to the front side at the lower end of the front surface, and pin holes (14) (14) provided at the lower part of the side surface, Further, the lower edge of the side surface is located below the pin holes (14) (14), and guide pieces (15) (15) bent outward are formed on the lower portion of the side surface. Reference numeral (16) is an upper hinge cover for covering the upper hinge body (9), and a storage space (18) having bearing grooves (17) (17) formed therein and square holes (19) (19) are formed on both sides. On the mounting step (2
0) and (20) are formed, and engaging holes (21) and (21) are formed near the mounting step. Reference numeral (22) is a lock button housed in the housing space (18), and the shaft pins (23) (23) provided on one side are connected to the bearing grooves (17) (17).
Plural pressing claws (24) (24) locked to the other side and provided on the other side
Is constantly pushed upward by the spring (25).
(26) is a square hole (19) of the upper hinge cover (16)
A rubber seat for slipping the top plate (T) inserted through (19),
(27) (27) is a protrusion (2
8) Elastic pieces (29) and (29) having (28) are provided, and engaging pieces (31) and (31) having hooking claws (30) and (30) at the upper end are provided adjacent to the elastic pieces. It is a makeup cover.

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

Reference numeral (34) is a lower hinge body having a planar U shape formed of a thick metal plate, and has a plurality of pin holes (3
5) Provide (35) and screw insertion hole (36) in the lower part of the side surface.
Seat plates (37) and (37) are formed by drilling (36). (38) is provided with a guide cavity (39) on the front surface and a pair of vertically long ribs (40) are provided on the inner wall of the guide cavity.
(40) and stopper ribs (41) and screw holes (42) (42) are formed on both sides of the fixed stepped portions (43) (4).
A fixing base (3) is formed, and (44) is an operator disposed in the guide space (39) and constantly pushed up by a spring (45), and the stopper rib (41).
Stopper (4
6) and latching claws (48) (48) and hook-shaped pressing pieces (49) provided in parallel with each other and having inclined portions (47) (47).
(49) is formed.

Reference numeral (50) is a support leg made of synthetic resin, and a plurality of elongated holes (51) (51) (51) (51) are provided in the upper portion and screw insertion holes (52) (52) are provided in the lower portions on both sides. A cavity made of synthetic resin having the mounting flat portions (53) (53) provided is composed of a lower hinge cover (54) and a hollow leg portion (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, the lower hinge body (34) is attached to the leg (5).
5) Insert the pin holes (37) (37) from the lower part and expose the pin holes (37) (37) from the notches (57) (57) provided on both sides of the mounting flat parts (53) (53) of the lower hinge cover (54). The seat plates (37) (37) are overlapped with the lower surfaces of the mounting flat portions (53) (53) of the lower hinge cover (54) to screw through holes (36).
Align (36) with the screw holes (42) (42). In this state, the pin holes (14) and (14) of the upper hinge body (9) and the pin holes (35) and (35) of the lower hinge body (54) are aligned with each other, and the hinge pin (32) is inserted to insert the E ring (33). ) To prevent the shaft from coming off and form a shaft support (58).

The actuator (44) and the spring (45) are housed in the guide space (39) of the fixed base (38), and the stopper (46) is in contact with the stopper rib (41). 38) is inserted from the lower part of the leg part (55), and the fixed step part (43) is inserted with the seat plates (37) (37) interposed.
The upper surface of (43) and the lower surface of the mounting flat portions (53) (53) of the lower hinge cover (54) are overlapped, and screws (58) (5)
8) the screw insertion holes (52) (52) and the screw insertion holes (3
6) Screw holes (42) of the fixing base (38) through (36)
After the leg portion (55), the lower hinge body (34) and the fixing base (38) are integrated with each other by screwing into the (42), the leg cap (56) is fitted and fixed to the lower end of the leg portion (55). At this time, the hooks (48) (48) and the pressing pieces (49) of the actuator (44)
Each of (49) is a long hole (51) (51) (51) (5
Face 1).

Then, the rubber seat (26) is inserted into the square holes (19) (19) of the upper hinge cover (16) and the front side is always urged upward by the spring (25). The lock button (22) is stored in the storage space (18), and the upper hinge body (9) is stored in the upper hinge cover (16). 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).

Thereafter, the elastic pieces (29) (29) of the decorative covers (27) (27) are fitted inside the guide pieces (15) (15), and the engaging pieces (31) (31) are attached to the upper hinge body (9). ), The hook piece (30)
(30) is an engagement hole (21) of the upper hinge cover (16)
It engages with (21) and the protrusions (2) of the elastic pieces (29) (29)
8) (28) is pressed against the outer wall surface of the lower hinge covers (54) (54) located above the mounting flat portions (53) (53). The support legs (5
0) is a stopper claw (13) (1) of the upper hinge body (9).
3) is locked in the locking holes (7) and (7) of the leg mounting bracket (4a), and the bolt (59) is inserted into the insertion hole (6) of 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.

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. 7 and 10, the support leg (50) is erected. ), The protrusions (28) and (28) are slidably contacted with both side wall surfaces of the lower hinge cover (54) (see the locus of the two-dot chain line of the protrusions (28) and (28) in FIG. 10).
0) gradually rotates without rattling. Support legs (5
When (0) is further rotated, the upper ends of the latching claws (48) (48) of the actuator (44) are inclined (10) () of the stopper pieces (11) (11) of the upper hinge body (9). 10) and the operator (44) descends against the spring (45) due to the sliding contact.

Eventually, when the support leg (50) is in a completely upright state, the latching claws (48) (48) of the actuator (44) are engaged with the stopper pieces (11) (11) of the upper hinge body (9). The front side is caught and locked. In a state where such a standing state is maintained, the two stopper pieces (11) (1
1) and two hooks (48) (48) for the actuator (44)
The upper hinge body (9) and the lower hinge body (34) are hooked by and the upper and lower hinge bodies (34) are supported by the hinge pin (32) at two axial fulcrums, stopper pieces (11) (11), and latching claws (48) (48). Locking is done by a total of 4 lock parts in 2 places,
The latched state is maintained by the biasing force of the spring (45).

As shown in FIG. 11, most of the lower end of the upper hinge body (9) is mediated by a part of the decorative covers (27) and (27) when the support legs (50) are erected. Even if the supporting leg (50) is pulled in the direction of the arrow A in FIG. 7 by hitting the mounting flat portions (53) (53) of the lower hinge cover (54), the lower hinge cover (54) has almost the same load. Is transmitted from the mounting flat portions (53) and (53) to the upper hinge body (9) 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. 7, most of the load is the same as when it is pulled in the direction of arrow A, and the mounting flat portions (53) (53) of the lower hinge cover (54). Is transmitted to the upper hinge body (9) and is distributed to the leg mounting metal fitting (4a) through the stopper claws (13) (13) and the hook claws (48) (48) of the actuator (44).
And is restrained by the engagement of the stopper claws (11) (11) of the upper hinge body (9). Then, as shown in FIG. 7, when the top plate (T) is placed on the upper surface of the kotatsu body (1) and used, when a person rides on the top plate (T), the rubber seat (26) is Although the weight is added to the upper hinge body (9) via the upper hinge body (9), 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, pressing the lock button (22) as shown by the arrow in FIG.
The pressing claws (24) (24) are pressing pieces (49) (49).
And press the hooks (48) (48) and the stopper claws (1
1) Release the engagement of (11) and show the lower part of the support leg (50) in FIG.
Press in the direction of the arrow and bend. FIG. 3 shows a state in which the four support legs (50), (50), (50) and (50) are bent in this way.

FIG. 11 shows another embodiment of the upper hinge body (9), which is a pin hole (14) (1) serving as the shaft supporting portion (58).
4) Flat plate part (60) bent horizontally below
(60) is integrally provided, and as shown in FIG. 13, the flat plate portion is directly attached to the mounting flat portion (53) (5) of the lower hinge cover (54).
Contact 3). In this case, the makeup covers (61) (6
In 1), the lower surface becomes smaller.

When the support leg (50) is erected with respect to the frame body (2) in a state where the upper hinge body (9) and the lower hinge body (34) shown in FIG. Then, the load applied to the frame body (2) is transmitted to the support leg (50) by the flat plate portions (60) and (60) being added to the mounting flat portions (53) and (53) as shown in FIG.

In the present invention, the actuator is provided with the two stopper pieces and the two engaging pawls for engaging with the stopper. However, the operating element side is necessarily provided with the number of engaging pawls corresponding to the stopper pieces. There is no need, and the point is that it is sufficient if a plurality of stopper pieces are hooked at several points on the actuator.

[0024]

As described above, according to the present invention, a plurality of stopper pieces provided on the upper hinge body fixed to the frame body side and a plurality of latching pieces of the actuator provided on the support leg are provided at a plurality of places. Since the legs are hooked and hold the upright state, the upright state can be reliably held, and even if external force is applied to the supporting legs, it is received by many parts of the shaft support part and the hooking part, and there is no rattling. There is no occurrence. In particular, since the actuator is always urged by a spring to be provided in the support leg, a space including the actuator and its movable stroke can be secured in the support leg with a sufficient space.

Further, since the stopper piece is formed by bending the upper flat surface of the upper hinge body downward, the strength is improved as compared with the stopper piece formed by screwing or fixing other parts to the upper hinge body. Then, the upper hinge body itself also forms a box shape, which increases the strength and the upper flat surface that forms the stopper piece is not the portion where the load on the frame body side is directly applied. Moreover, it is possible to prevent deformation of the latching mechanism without being affected by the load on the frame body side.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a main part of a frame leg device according to the present invention.

FIG. 2 is also a perspective view of a kotatsu body including the leg device of the present invention.

FIG. 3 is a perspective view of the same when the legs are folded.

FIG. 4 is a perspective view of a frame and legs.

FIG. 5 is a perspective view of a lower hinge body and a fixing base.

FIG. 6 is a perspective view of an upper hinge cover and an upper hinge body.

FIG. 7 is a partial cross-sectional view when a top plate is placed.

FIG. 8 is a partial cross-sectional view before folding the legs.

FIG. 9 is an upper sectional view of a leg.

FIG. 10 is an operation explanatory diagram when the leg is folded.

FIG. 11 is a partial cross-sectional view of a leg.

FIG. 12 is a perspective view showing another shape of the upper hinge body.

FIG. 13 is an enlarged cross-sectional view showing another embodiment of the leg body.

[Explanation of symbols]

 1 Kotatsu body 2 Frame 2a, 2b, 2c, 2d Inner bar 3a, 3b, 3c, 3d Outer bar 4a, 4b, 4c, 4d Leg mounting metal fittings 8a, 8b, 8c, 8d Leg 9 Upper hinge 9a Flat surface 11 Stopper piece 34 Lower hinge body 44 Actuator 45 Spring 50 Support leg 55 Leg part

Claims (1)

[Claims] 1. A frame body in which a plurality of inner rails and outer rails are combined to fix adjacent outer rails by leg mounting metal fittings, and a leg body fixed to the leg mounting metal fittings and pivotably attached thereto. The leg body is fixed to the leg mounting member and has an upper hinge body having a plurality of stopper pieces bent downward in parallel from an upper flat surface, and a lower hinge body pivotally supported on the upper hinge body. A body, a support leg having the lower hinge body installed therein, and an actuator housed in the support leg body and having a plurality of parallel latching pawls, which are urged by a spring to be constantly pushed up. A leg device for a frame body, wherein each of the stopper pieces is hooked on each of the hooking claws to hold the leg body in an upright state.