JP2994763B2 - Frame leg device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leg device of a frame most suitable for electric kotatsu and the like.

2. Description of the Related Art A frame used as an electric kotatsu is supported by a plurality of legs provided at corners thereof. However, with the recent changes in lifestyle, the use of electric kotatsu has changed, and even in off-seven, the height of the frame has been reduced, and it has been increasingly used as a so-called low table. Including such points, for example, Japanese Utility Model Laid-Open No.
Japanese Patent Laid-Open No. 909 discloses that the leg body can be bent freely. However, in this case, only the bending mechanism of the leg body is shown, and most of the bending mechanism is exposed. In addition, the appearance of the frame is poor, and the proportion of the bending mechanism in the length from the upper surface of the frame to the lower end of the leg increases, and the height of the frame at the time of bending the leg increases, resulting in a low table. There is a disadvantage that the function of can not be performed. Incidentally, for example, Japanese Utility Model Laid-Open No. 58-124739
Japanese Patent Laid-Open Publication No. H11-214873 has proposed a device in which a sliding leg is provided at a lower portion of a leg to adjust the height of the kotatsu. However, a guide groove, a guide pin, and a locking groove for vertically moving the sliding leg are provided. Exposure to the outside of the body made it unattractive.

According to the present invention, one leg is provided with a hinge mechanism for bending the leg and a telescopic mechanism for adjusting the height of the leg.

According to the present invention, there is provided a frame comprising a plurality of crosspieces, and a hollow leg attached to a proper position of the frame. A part or the whole of a hinge mechanism that pivotally supports the leg and can be bent is housed, and an auxiliary leg that adjusts the length of the leg by the elastic mechanism is provided at a lower part in the leg. In addition, a support plate forming a part of the expansion mechanism is fixed to the hinge mechanism. Further, the sliding rod forms a plurality of hooks vertically supporting a part of the sliding rod,
An operating rod disposed in a space in which an upper end is connected to the sliding rod and a lower end is formed by recessing the bottom wall of the auxiliary leg upward; Is to unlock.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described.
(1) is a plurality of bars (2) (2) ..., (3) (3)
Are combined vertically and horizontally, (4) is a heater unit mounted at the center of the frame, (5), (5) are legs fixed to the corners of the frame (1) described later. The body mounting brackets (6), (6)... Are hollow legs which are fixed at their upper parts to the mounting brackets (5) so as to be freely bent and extendable. The legs are formed by a mounting base (7) and a telescopic mechanism. It consists of legs (8) for adjusting the length of the body and is described in detail below.
(7) is a mounting base fixed to the mounting bracket (5), which is constituted by the members described below. (See FIG. 6).
(9) has a screw hole (10) formed on the front surface and two parallel engaging pieces (11) and (11) on the upper side, and shaft holes (12) and (12) on the lower sides. Box-shaped fixing bracket, (1
3) a synthetic resin cover for covering the outer surface of the fixing bracket (9), having a screw insertion hole (14) formed on the front surface, and a plurality of square holes (15) (15) formed on the upper surface; (16) (1
6) and a recess (18) having a cross-shaped boss (17)
And engaging holes (19) (19) are formed on both sides. (20) is a non-slip rubber of a top plate (not shown) that engages with the square holes (15) and (15), and (21) is housed in the concave portion (18) and provided on both sides of one end. Projection pin (22)
A lock button (22) is pivotally supported by the bearings (16) and (16), and lock pieces (23) and (23) at the other end are disposed on the lower surface of the cover (13). 17) and the lock button (21), a spring stretched between the engaging pieces (2).
3) (23) is always urged upward. (25) Reference numeral (25) denotes a decorative cap for closing a lower space between the cover (13) and the fixing bracket (9) when the cover (13) is covered with the fixing bracket (9). Engagement claws (26) (26) fitted to (19) are provided. (27) is an axis. (8) is a synthetic resin hollow leg pivotally supported by the fixing bracket (9) so as to be freely pivotable. A plurality of slits (28) (28) and screw insertion holes (29) (29) are provided at the upper part. An insertion portion (30) is formed to enter and exit the box of the fixing bracket (9). (31) is a synthetic resin core in which screw holes (32) and (32) are formed on both lower sides and a stop piece (33) is formed at the center, and (34) is a screw insertion hole (35) ( 35) and saddles having shaft holes (36) and (36) formed therein, and (37) is a vertically movable operation having stoppers (38) and (38) formed on both upper sides and a regulating piece (39) formed in the center. Child, (4
Reference numeral 0) denotes a spring stretched between the core (31) and the actuator (37), and constantly pushes and urges the actuator (37). Reference numeral (41) denotes a support plate housed in the leg (8) and having an upper portion fixed thereto, and a pin (42) fixed to a lower portion. (43) is a telescopic leg having a cavity (44) in which the lower part of the leg (8) is loosely fitted and accommodated from the lower part thereof and whose bottom wall is recessed upward. Through hole (45)
Has been drilled. (46) is a mounting plate fixed to the auxiliary leg (43), (47) is housed in the leg (8), the upper end is free, and the lower end is attached to the rotating shaft (4).
The sliding rod is pivotally supported by 8), and has a plurality of vertically extending hooks (49a) (49b) and a stopper (50) at the top. An upper end of the sliding rod (51) is displaced in a lateral direction from the rotation shaft (48) by a support shaft (52).
7), an operating rod having its lower end inserted through the through hole (45) and facing the cavity (44); (53) is an operating rod of the sliding rod (47) and the cavity (44); A return spring interposed in the upper wall urges the sliding rod (47) so as to be always upright and the operating rod (51) to be always pulled upward. Next, the assembling sequence, the bending operation, and the expansion / contraction operation will be described. First, the order of assembly will be described. The operating element (37) is fitted to the core (31), a spring (40) is stretched between the operating element and the core (31), and the regulating piece (39) is hooked on the stopping piece (33). The actuator (37) is prevented from rising more than necessary. Thereafter, the saddle (34) is overlapped with the core (31), and the screw insertion holes (35) (35) and the screw holes (32) (3) are formed.
When the assembly is inserted from the lower part of the leg (8) and arranged in the insertion part (30), the screw insertion hole (29)
(29) and screw holes (35) (35) and screw holes (3
2) (32) matches. In this state, the support plate (41)
Of the core (31) into the insertion portion (30) of the core (31), and the screws (54) and (54) are inserted into the screw insertion holes (29) and (29), the screw insertion holes (35) and (35), and the screw hole (32). The core (31), the saddle (34), and the support plate (41) are screwed into the upper end of the support plate (41) via (32), and fixed to the inside of the leg (8). At this time, the stopper (38) of the actuator (37)
(38) faces the slits (28) and (28) and the shaft holes (36) and (36) of the saddle (34) are exposed on the side wall of the insertion portion (30). Subsequently, an assembly in which each of the sliding rod (47) and the operating rod (51) is rotatably supported on the mounting plate (46) and integrated with the telescopic leg (43) in advance is attached to the leg (8). It is housed in the leg from the lower part, the lower end of the operating rod (53) is pulled, and a hook at an appropriate position is hooked on the pin (42) to complete the mounting of this assembly. As a result, the support plate (41), the sliding rod (47), the operating rod (51), the mounting plate (46), and the return spring (53) constitute an extension mechanism (A) of the extension leg (43). (See FIG. 8) Thereafter, the insertion portion (30) is put into the box of the fixing bracket (9), and each of the shaft holes (12) (1) is inserted.
2), (36), (36) are matched, the shaft (27) is inserted and the retaining ring (55) is fitted to complete the connection. As a result, the fixing bracket (9) and the saddle (34) constitute a hinge mechanism (B) (see FIG. 4). In this state, the engaging pieces (11) and (11) of the fixing bracket (9) are inclined by the inclined walls (38a) and (38) of the stoppers (38) and (38) of the actuator (37).
a) and the leg (8) stands up. Then, when the cover is put on the fixing bracket (9) with the lock button (21), the spring (24) and the anti-slip rubber (20) attached to the cover (13), the engaging piece of the lock button (21) (23) (23) is the stopper (3) of the actuator (37).
8) The lower space facing the upper part of (38) and between the fixing bracket (9) and the cover (13) is a decorative cap (25).
Close at (25). The lock button (21) and the spring (24), the actuator (37), the spring (40), and the engaging pieces (11) and (11) of the fixing bracket (9) are a lock mechanism (C).
(See FIG. 4), and relatively hinge mechanism (B)
It is located near the top. The lock mechanism (C) and the hinge mechanism (B) are provided at the upper part in the leg (6), and the telescopic mechanism (A) is provided at the lower part in the leg (6). Thereafter, the fixing fitting (9) is applied to the mounting fitting (5), and the bolt (56) is inserted through the mounting fitting (5) and the screw insertion hole (14) of the cover (13) to thereby fix the fixing fitting (9). Screw holes (1
0), and the attachment of the legs (6) is completed.
Thus, when the leg (6) is bent from the upright state,
The other end of the lock button (21) is pressed down against the spring (24), and the stoppers (38) (38) are further pressed down against the spring (40) by the engagement pieces (23) (23). In a state in which the fixing metal (9) is released from the engagement with the engaging pieces (11) and (11) with the pressing down (the lock button is pressed down), the leg (8) is moved in the direction of arrow A in FIG. By turning, it is bent as shown in FIG. When the leg (8) is to be brought upright again, when the leg (8) is turned in the direction of arrow B from the state of FIG.
8) Since the upper end of (38) hits the engagement pieces (11) and (11), the actuator (37) is pushed down against the spring (40) and the stoppers (38) and (38) are engaged with the engagement pieces (11).
At the point when (11) is jumped, it is locked to the engaging piece. (See FIGS. 1 and 4) In the case of adjusting the length of the leg (6), in the state of FIG. 8, all parts of the telescopic leg (43) are housed in the leg (8) and 6) is in a short state, and the lower engaging portion (49b) is engaged with the pin (42). In order to make the leg (6) long, when the finger is inserted into the space (44) from the state shown in FIG. 8 and the operation rod (51) is slightly lowered against the return spring (53), the state shown in FIG. As shown, the sliding rod (47) rotates and its upper part moves rightward in the drawing to release the locking between the locking portion (49b) and the pin (42). When the operating rod (51) is further lowered, the sliding rod (4
The side edge (47a) of (7) slides down on the pin (42) and descends, and the uppermost stopper piece (50) hits the pin (42), and the upper hooking part (49a) of the pin (42) as shown in FIG. ), The telescopic leg (43) is pulled out from the lower end of the leg (8). In this state, the load of the frame (1) and the leg (6) is applied via the support plate (41), the pin (42), the hook (47a) of the sliding rod (47), and the mounting plate (46). And auxiliary legs (4
Join 3). In the present invention, the saddle (34) forming a part of the hinge mechanism (B) is separated from the leg (8) and fixed to the mounting bracket (5) to form the rest of the hinge mechanism (B). ) Is provided in the leg (8), but the hinge mechanism (B) may be entirely housed and fixed in the hollow leg.

As described above, according to the present invention, a part or the whole of a hinge mechanism which is pivotally supported by a frame and can be bent is housed in the upper part of the leg body, and a telescopic mechanism is provided in the lower part. An auxiliary leg for adjusting the length of the leg by a telescopic mechanism is provided at the lower part of the leg, and a support plate constituting a part of the telescopic mechanism is fixed to the hinge mechanism. The leg can be bent and the length can be adjusted by the leg, so that the use state of the frame can be expanded and the storage property can be enhanced. Especially when the leg is bent in a state where the leg is short, the space between the tips of the opposed auxiliary legs after bending the leg becomes large, and other parts are stored,
Alternatively, in the case of an electric kotatsu in which a heater unit is attached to the lower surface at the center of the frame, the size restrictions are reduced. By fixing a support plate that constitutes a part of the hinge mechanism to the hinge mechanism, the hinge mechanism and the telescopic mechanism fixed in the same leg can be fixed to each other by the support plate, and can be integrated. As a structure, stronger fixing can be achieved as compared to the single fixing of only a single mechanism.

[Brief description of the drawings]

FIG. 1 is a sectional view of a leg showing an embodiment of a frame leg device of the present invention.

FIG. 2 is a perspective view of a frame in which the leg device of the present invention is mounted and the leg is in an upright state.

FIG. 3 is a perspective view of a frame in which the leg device of the present invention is mounted and the leg is bent.

FIG. 4 is a cross-sectional view of the hinge mechanism in a standing state of the legs.

FIG. 5 is a cross-sectional view of the hinge mechanism in a state where the legs are bent.

FIG. 6 is an exploded perspective view of an upper side of a lock mechanism and a hinge mechanism.

FIG. 7 is an exploded perspective view of a lower portion of the hinge mechanism.

FIG. 8 is a sectional view of each part when the leg is short.

FIG. 9 is a diagram illustrating the operation of the telescopic mechanism.

FIG. 10 is a sectional view of each part when the leg is long.

[Explanation of symbols]

 Reference Signs List 1 frame 2 bar 3 bar 6 leg 7 mounting base 8 leg 9 fixing bracket 21 lock button 42 pin 43 telescopic leg 44 vacant 47 sliding rod 49a locking part 49b locking part 51 operating rod A telescopic mechanism B hinge Mechanism C Lock mechanism

Continuing from the front page (72) Inventor Takashi Moriwaki 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (72) Inventor Yasumasa Yamane 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. In-company (56) References JP-A-62-306316 (JP, A) JP-A-62-102905 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) F24C 15/08 A47B 3/08 F24C 7/04-7/06

Claims (2)

(57) [Claims] 1. A frame composed of a plurality of crosspieces and a hollow leg attached to an appropriate position of the frame, and a leg is bent at the upper part of the leg by pivotally supporting the frame. housed some or all of the universal and the hinge mechanism, the leg body at a lower portion and interior of the extension mechanisms Rutotomoni an auxiliary leg to adjust the length of the leg by the expansion mechanism, one said telescopic mechanism Department
A frame leg device wherein a supporting plate to be constituted is fixed to the hinge mechanism . 2. The sliding rod has a plurality of vertically extending hooks that partially support the sliding rod, an upper end of which is connected to the sliding rod, and a lower end which has the bottom wall of the auxiliary leg facing upward. The leg of the frame body according to claim 1, wherein the operating rod disposed in the recessed space rotates the sliding rod to release the lock between the engaging portion and a pin provided in the leg body. apparatus.