JP2911231B2 - 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 leg device which is most suitable for electric kotatsu and which can be bent and attached to a frame.

[0002]

2. Description of the Related Art Legs of a frame used as an electric kotatsu are bent for off-season or cleaning to reduce an occupied space. A variety of hinge mechanisms for such bending have been proposed for a long time, but all prior arts have a large number of parts, have poor assemblability, are heavy, and are difficult to mount. As an example, Japanese Patent Application Laid-Open No. 1-62107 is mentioned, but this case also has the above-mentioned disadvantage. That is, the hinge mechanism includes a thick metal upper hinge body fixed to the frame, a thick metal lower hinge body fixed to the upper part in the legs, and the upper hinge body and the lower hinge body. Is pivotally supported by a shaft pin, so that a heavy metal upper hinge body and lower hinge body combination unit is an electric kotatsu, and in the case of a rectangular frame, at least four sets are required. The weight of the entire frame became very heavy, especially when the frame was leaned against a wall or the like, whereby the weight of the frame caused the balance of the frame to be lost, resulting in a fall or an unstable storage.

In addition, since the lower hinge body is housed through the lower opening in the leg body and fixed above the inside, screw hole alignment between the leg body and the lower hinge body is very troublesome, resulting in poor assemblability. Furthermore, since the lower hinge body is connected to the upper hinge body, its metal surface is exposed from the outer surface of the leg body. When the leg body is bent, the exposed portion is unsightly and the design of the interior is inferior.

[0004]

SUMMARY OF THE INVENTION The present invention eliminates the need for a metal lower hinge as conventionally used, simplifies the hinge mechanism, improves assemblability, and improves the strength of the hinge mechanism. is there.

[0005]

According to the present invention, there is provided a frame comprising a plurality of crosspieces, a mounting bracket fixed to an appropriate position of the frame, a fixing bracket fixed to the mounting bracket, and A resin cover covering the periphery and a leg integrally formed of synthetic resin from the upper part to the lower part, and a plurality of ribs integrally extending from the upper part to the lower part and provided with a through hole or a notch in the lower part. And a shaft that connects the fixing bracket and the upper part of the leg so that the leg can be bent freely, and the shaft is inserted into a through hole or a cutout.

[0006]

[Function] The leg is freely bent by the axis by the fixing bracket fixed to the mounting bracket and the upper part of the leg made of synthetic resin,
In addition, since the shaft is inserted into the through hole or notch below the plurality of ribs integrally formed in the leg body, the weight of the so-called hinge mechanism is reduced to about half of the conventional one, and the hinge part is stored in the leg body. There is no need to fix it.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings when an electric kotatsu is used. (1) is formed by a plurality of inner crossbars (2) (2) (2) (2) combined with a girder and a plurality of outer crossbars (3) (3) (3) (3) surrounding the outside. Combined frame,
(4) (4) (4) (4) are side-side U-shaped mounting brackets which are located at the corners of the frame body (1) and connect and fix adjacent outer crossbars. Has been established. (6) is a front plate (8) having a screw hole (7) formed on one side, and an upper plate (10) having a cutout hole (9), and shaft holes (11) and (11) are formed respectively. A fixing bracket having side plates (12) and (12).

(13) does not show the shaft pins (14) and (14) provided on both sides of the notch hole (9), but the hole wall of the notch hole (9) of the upper plate (10) is shown. With the lock button pivotally supported on the shaft pin (1
4) A stopper (15) is provided on one side toward the front plate (8) with the (14) therebetween, and an operation button (16) is formed on the other side.
The length of the stopper (15) is set so that the tip thereof is located immediately above the shaft holes (11) and (11) of the fixing bracket (6).

A resin cover (17) is provided with an operation hole (18) for exposing the operation button (16) at an upper portion and an engagement portion (19) at a lower portion of a rear inner wall surface. The resin cover (6) It covers almost the entire surface.

Reference numeral (20) denotes a spring stretched between the upper surface of the stopper (15) and the inner surface of the resin cover (17). The spring is depressed so that the operation button (16) is raised. I'm going.

[0011] (21) is a leg body which is integrally formed from the upper part to the lower part with synthetic resin and has a hollow inside. The upper part has an insertion part (22) to be accommodated inside the fixing bracket (6). A hook portion (23) is provided outside the upper end, and a shaft hole (14) of the fixing bracket (6) is provided on both sides immediately below the hook portion.
(24) (24) A shaft hole having a slightly smaller hole diameter than (14).
Is provided. Further, as shown in FIG. 4, a plurality of ribs extending on the upper inner wall of the insertion portion (22) in parallel with each other in the vertical direction and connected to the front wall near the shaft holes (24) and (24). (25), (25), (25), and (25) are juxtaposed and integrally formed, and a cutout (26) (2)
6) (26) and (26) are provided. (27) is a cap for closing the lower end of the leg (21).

Reference numeral (28) denotes a metal shaft which supports the fixing bracket (6) and the insertion portion (22) to make the leg (21) freely bendable.

Reference numeral 29 denotes a non-slip rubber of a top plate (not shown) sandwiched between the upper plate 10 of the fixing bracket 6 and the resin cover 17.

Next, the assembling sequence and operation will be described. First, the insertion part (22) is stored in the fixing bracket (6) and the fixing bracket (6)
The shaft holes (11) and (11) are aligned with the shaft holes (24) and (24) of the insertion portion (22), and one end of the shaft (28) is inserted from one shaft hole (11) of the fixing bracket (6). Insert and press fit into one shaft hole (24) of the insertion part (22)
(6) and the other shaft holes (11) and (24) of the insertion portion (22) are press-fitted and inserted into the shaft holes (11) and (24). At this time, the ends of the shaft (28) are ribs (25) and (25). (25) Guided by the notches (26), (26), (26), and (26) of (25), the press-fitting and insertion are smooth. In this manner, the fixing bracket (6) and the leg (21) are connected to bendable.

Then, the lock button (13) is inserted into the cutout hole of the upper plate (10).
With the spring (20) placed on the upper surface of the stopper (15) and the non-slip rubber (29) placed on the upper surface of the upper plate (10), the resin cover (17) is fixed to the fixing bracket (6). As shown in FIG. 4, almost all of the upper and lower side surfaces of the fixing bracket 6 and both ends of the shaft 28 are covered. The spring (2
(0) is accumulated and the stopper (15) is pushed downward and the operation button (1
6) is biased upward.

Thereafter, the bolt (30) is inserted through the screw insertion hole (5) of the mounting bracket (6), and the fixing bracket is inserted through the resin cover (17).
The screw hole (7) of (6) is screwed and fixed to complete the assembly.

Thus, when the leg (21) is in the upright state, FIG.
As shown in (1), the engaging portion (23) of the insertion portion (22) is engaged with the stopper (15), and the engaging portion (P) is immediately above the shaft (28). The reason for setting such a positional relationship between the hanging point (P) and the shaft (28) is that the distance (H) between the shaft (28) of the leg (21) and the hanging point (P) is, for example, The distance (W) is shorter than the distance (W) when the hooking point is set at the right position (Q) point shown in FIG. 1, and when the leg (21) is standing, the leg (21) is forced in the direction of arrow A. This is because the rotation of the leg (21) can be suppressed to a minimum when the addition is performed, and the hooking point (P) is located at a position where the rotation of the outer wall of the insertion portion (22) is not hindered. . In the standing state of the leg (21), FIG.
As shown in FIG. 4, the edge of the notch (26)... (26) of the rib (25)... (26) hits the upper part of the shaft (28), and the load applied to the frame (1) is , Most of which are shafts (2
And transmitted to the leg (21) via the fixing bracket (6). As a result, a large force may be applied to the upper portion of the synthetic resin leg (21) to cause damage, but the rib (2
5) The entirety of the insertion portion (22), which is easily damaged by the contact between the lower portion of (25) and the shaft (28), is reinforced.

When the leg (21) is bent, the operation button (16) is pressed down against the spring (20) to release the hooked state of the stopper (15) and the hook (23).
When the leg (22) is rotated in the direction of arrow A in FIG. 1, the edges of the notches (26)... (26) of the ribs (25)... (25) rotate while sliding on the surface of the shaft (28). Finally, the hooking portion (23) engages with the engaging portion (19) to maintain the bent state as shown in FIG. In such a folded state, when the side wall of the leg (21) is applied to the floor and the top plate is placed on the upper surface of the frame (1) and used as a so-called low table, the load applied to the top plate is reduced. It is transmitted to the fixing bracket (6) via the non-slip rubber (29) and transmitted to the leg (21) via the shaft (28). The load from the top plate at the time of bending is as shown in FIG. Ribs (25) (25) (25)
(25) as well as the front wall (21) of the insertion portion (22).
Disperse also in a).

In the present invention, the notch is provided at the lower end of the rib, but it may be a circular through hole, and the rib may be connected not only to the front wall and the upper wall of the insertion portion but also to the rear wall. It may be provided continuously. Furthermore, the shaft is made of metal and inserted through the shaft hole of the synthetic resin insertion portion, but the shaft is pressed into the shaft hole of the insertion portion in consideration of preventing deformation and deterioration of the shaft hole. It is better to rotate between the shaft hole of the fixing bracket.

[0020]

As described above, according to the present invention, the fixing bracket fixed to the frame and the upper part of the leg integrally formed of synthetic resin are connected by a shaft, and the shaft is integrally formed inside the leg. Since it is inserted into the through holes or cutouts of a plurality of ribs provided in parallel, a part of the leg is used as a hinge mechanism, so the overall weight is very light and the leg is similar to the conventional one. This eliminates the hassle of storing and fixing the components of the hinge mechanism, improves the assemblability, and makes the appearance clear without exposing the metal part to the outside. In particular, since the shaft is inserted along the through hole or the notch of the rib when connecting the leg and the fixing bracket, the mounting of the shaft is simplified, and the assemblability of the hinge mechanism between the shaft and the fixing bracket is improved. Can be enhanced. Further, the plurality of ribs can reinforce the upper portion of the leg when a load applied to the fixing metal is applied to the upper portion of the leg, thereby preventing breakage (such as cracking).

[0021]

[0022]

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a mounting example of a leg device of a frame when used in an electric kotatsu as one embodiment of the present invention.

FIG. 2 is a perspective view of an electric kotatsu showing a mounting example.

FIG. 3 is a perspective view showing a bent state of a leg showing an example of mounting.

FIG. 4 is a cross-sectional view showing a connection state between a fixing bracket and a leg.

FIG. 5 is a cross-sectional view showing a bent state of the leg.

[Explanation of symbols]

 1 Frame 2, 2, 2, 2 Inner rail 3, 3, 3, 3 Outer rail 4 Mounting bracket 6 Fixing bracket 13 Lock button 17 Resin cover 21 Leg 23 Hook 25, 25, 25, 25 Rib 26 26, 26, 26 Notch 28 axis

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yasumasa Yamane 3-201 Minamiyoshikata, Tottori City, Tottori Prefecture Tottori Sanyo Electric Co., Ltd. (56) References JP-A-64-62106 (JP, A) JP-A Sho 63-283606 (JP, A) JP-A 1-109713 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) A47B 3/08 A47C 4/04 F24C 15/08

Claims (1)

(57) [Claims] 1. A frame in which a plurality of bars are combined, a mounting bracket fixed to an appropriate position of the frame, a fixing bracket fixed to the mounting bracket, and a resin cover covering the periphery of the fixing bracket. Integrally molded with synthetic resin from the top to the bottom and on the inner wall
Extends in parallel in the vertical direction and has a through hole or notch at the bottom
A leg body integrally formed with a plurality of ribs provided with a rib, and the fixing bracket and the upper part of the leg body are connected to freely bend the leg body
The frame leg device wherein the shaft is inserted into a through hole or a cutout .