JPH04244110A - Leg device for frame body - Google Patents

Abstract

PURPOSE:To lighten the weight of a hinge mechanism by connecting a fixing metallic device fixed on a fitting metal-fittings, and a synthetic resin leg body to each other, to be freely folded with a shaft. CONSTITUTION:On a fitting metal-fittings (4) fixed on a frame body (1), a fixing metal device (6) is fixed, and to the fixing metal device, the upper section of a leg body(21) molded integrally with a synthetic resin from the upper section to the lower section is connected, to be freely folded with a shaft (28).

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 an electric kotatsu and is bendably attached to a frame.

0002

2. Description of the Related Art The legs of a frame used as an electric kotatsu are bent to reduce the space occupied during the off-season or for cleaning. Various hinge mechanisms for such bending have been proposed for a long time, but all of the prior art techniques have a large number of parts and are difficult to assemble, as well as being heavy and difficult to implement. As an example, Japanese Patent Application Laid-Open No. 1-62107 is cited, but even this case has the above-mentioned drawbacks. That is, the hinge mechanism includes a thick metal upper hinge body that is fixed to the frame, a thick metal lower hinge body that is fixed to the upper part of the leg, and the upper hinge body and the lower hinge body. Since the kotatsu is rotatably supported by a shaft pin, the combination unit of the heavy metal upper hinge body and lower hinge body is an electric kotatsu, and in the case of a rectangular frame, at least 4 sets are required. The overall weight was very heavy, and the weight caused the frame to become unbalanced, causing it to fall over or become unstable when stored.

Furthermore, since the lower hinge body is housed through a lower opening in the leg body and fixed upwardly inside the leg body, it is very troublesome to align the screw holes between the leg body and the lower hinge body, resulting in poor assembly efficiency. Furthermore, because the lower hinge body is connected to the upper hinge body, its metal surface is exposed from the outer surface of the leg body, and when the leg body is bent, the exposed portion is unsightly, resulting in poor interior design.

0004

SUMMARY OF THE INVENTION The present invention eliminates the need for a metal lower hinge body as used in the past, simplifies the hinge mechanism, and improves ease of assembly.

[0005]

[Means for Solving the Problems] The present invention provides a frame body combining a plurality of crosspieces, a mounting bracket fixed to a proper position of the frame body, a fixing bracket fixed to the mounting bracket, and a mounting bracket fixed to the mounting bracket. It consists of a resin cover that covers the periphery and a leg integrally molded from top to bottom with synthetic resin, and the fixing fitting and the upper part of the leg are connected by a shaft so that the leg can be bent freely. .

[0006]

[Function] The legs are constructed so that they can be bent freely around the fixing bracket fixed to the mounting bracket and the upper part of the synthetic resin legs, so the weight of the so-called hinge mechanism is about half that of the conventional one.
Further, there is no need to store and fix the hinge parts within the leg body.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be explained based on the drawings in the case of an electric kotatsu. (1) is made into a rectangular shape by multiple inner bars (2) (2) (2) (2) combined with a parallel grid and multiple outer bars (3) (3) (3) (3) surrounding the outside. The combined frame (4) (4) (4) (4) is a side U-shaped mounting bracket located at the corner of the frame (1) and connects and fixes adjacent outer frames, and has a screw insertion hole. (5) is provided. (6) has a front plate (8) with a screw hole (7) drilled on one side, a top plate (10) with a cutout hole (9), and a shaft hole (11) (11) drilled in each. side plate (12) (12
).

(13) is a hole wall of the notch hole (9) of the upper plate (10), although the shaft pins (14) (14) arranged in the notch hole (9) and provided on both sides thereof are not shown in detail. A lock button is pivotally supported, and a stopper (15) is provided on one side facing the front plate (8) with the shaft pins (14) (14) in between, and an operation button (16) is formed on the other side. ing. The stopper (15) has its tip connected to the fixing metal fitting (6).
) The length is set so that it is directly above the shaft hole (11) (11).

(17) is a resin cover having an operation hole (18) through which the operation button (16) is exposed at the upper part and an engaging part (19) at the lower part of the rear inner wall surface, It covers almost the entire area.

(20) is a spring stretched between the top surface of the stopper (15) and the inner surface of the resin cover (17), which pushes down the stopper (15) and presses the operation button (16).
) is biased to rise.

(21) is a leg body that is integrally molded from a synthetic resin from the upper part to the lower part and is hollow inside. A hook portion (23) is provided on the outside of the upper end, and shaft holes (14) for the fixing fitting (6) are provided on both sides immediately below the hook portion.
Shaft hole (24) with slightly smaller hole diameter than (14) (24)
has been established. Furthermore, the upper inner wall of the insertion portion (22) has a shaft hole (24) extending in the vertical direction as shown in FIG.
A plurality of ribs (25) (
25) (25) (25) are arranged side by side and integrally molded, and cutouts (26) (26) (26) (26) are provided at the bottom of each. (27) is a cap that closes the lower end of the leg (21).

(28) is the fixing fitting (6) and the insertion part (
It is a metal shaft that supports the leg (22) and allows the leg (21) to be bent freely.

(29) is the upper plate (1) of the fixing fitting (6).
0) and the resin cover (17) is the anti-slip rubber of the top plate (not shown).

Next, the assembly order and operation will be described. First, store the insertion part (22) in the fixture (6) and match the shaft holes (11) (11) of the fixture (6) with the shaft holes (24) (24) of the insertion part (22). Then, insert one end of the shaft (28) through one shaft hole (11) of the fixing metal fitting (6), and press fit it into one shaft hole (24) of the insertion part (22).
) and the other shaft hole (11) of each of the insertion portion (22), (
At this time, the shaft (24) is press-fitted and inserted into the shaft (24).
The tips of 8) are guided by the notches (26) (26) (26) (26) of the ribs (25) (25) (25) (25) to facilitate press-fitting and insertion. In this way, the fixture (6) and the leg (21) are connected in a bendable manner.

[0015] Then, lock the lock button (13) on the upper plate (10).
Place the spring (20) in the notch hole (9) of the stopper (15) and place the non-slip rubber (29) on the top plate (
10) Place the resin cover (17) on the top of the fixing bracket (6) and place it over the fixing bracket (6) as shown in Figure 4.
covers most of the upper and lower sides of the shaft (28) and both ends of the shaft (28). As the resin cover (17) is fixed, the spring (20) is loaded, the stopper (15) is pushed downward, and the operation button (
16) is forced upward.

[0016] After that, attach the bolt (30) to the mounting bracket (6).
The screw insertion hole (5) is inserted through the resin cover (17), and the screw hole (7) of the fixture (6) is screwed and fixed to complete the assembly.

[0017] Thus, when the leg body (21) is in an erect state, as shown in FIG.
As shown in the figure, the latching portion (23) of the insertion portion (22) and the stopper (15) are latched, and the latching point (P) is directly above the shaft (28). A hooking point like this (
The reason for setting the positional relationship between P) and the shaft (28) is that the distance (H) between the shaft (28) of the leg (21) and the latching point (P) is such that, for example, the latching point is not as shown in Figure 1. Right position shown (Q)
It is shorter than the distance (W) when set at a point, and minimizes the rotation of the leg (21) when force is applied to the leg (21) in the direction of arrow A while the leg (21) is in an upright state. This is because the locking point (P) can be held at a position that does not impede the rotation of the outer wall of the insertion portion (22).

When bending the legs (21), push down the operation button (16) against the spring (20) to release the engagement between the stopper (15) and the engagement part (23),
When the legs (22) are rotated in the direction of arrow A in FIG. 1, the hook portions (23) engage with the engaging portions (19) to maintain the bent state as shown in FIG. In this bent state, the legs (2
When the side wall of 1) is placed on the floor and a top plate is placed on the top surface of the frame (1) and used as a so-called low table, the load applied to the top plate is transferred through the non-slip rubber (29). The load is transmitted to the fixture (6) and then to the leg (21) via the shaft (28), but the load from the top plate during bending is transferred to the ribs (25) (25) (as shown in Figure 5). 25) (2
5) and the front wall (21a) of the insertion section (22)
Also dispersed to other areas.

In the present invention, a notch is provided at the lower end of the rib, but a circular through hole may also be provided, and the rib is not only connected to the front wall and the upper wall of the insertion portion, but also to the rear wall. May be installed consecutively. Furthermore, the shaft is made of metal and inserted into the shaft hole of the insertion section made of synthetic resin, but in order to prevent deformation and deterioration of the shaft hole, the shaft is press-fitted into the shaft hole of the insertion section. It is better to rotate it between the screw and the shaft hole of the fixing fitting.

[0020]

Effects of the Invention As described above, the present invention connects the fixing fitting to be fixed to the frame and the upper part of the leg integrally molded from synthetic resin by means of a shaft. Because it is used as a holder, the overall weight is extremely light, and there is no need to store and fix the parts of the hinge mechanism in the leg body, which is required in the conventional case, making it easier to assemble, and the appearance is cleaner as no metal parts are exposed to the outside. shall be.

[0021] Furthermore, since the locking point between the lock button and the hooking part of the leg is provided directly above the shaft that connects the fixing fitting and the insertion part of the leg, bending force is not applied to the leg when the leg is in an upright state. There is no wobbling or rotation even when the leg is rotated, and the latching location does not interfere with the rotation of the leg.

Furthermore, since the inner wall of the leg is integrally molded with a rib extending in the vertical direction and a through hole or notch is provided in which the shaft is inserted, the rib allows smooth insertion of the shaft and the shaft hole of the leg prevent it from deforming or becoming large in diameter.

[Brief explanation of the drawing]

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

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

FIG. 3 is a perspective view showing a bent state of the legs, also showing a mounting example.

FIG. 4 is a sectional view showing a state in which the fixture and the leg are connected.

FIG. 5 is a sectional view showing a bent state of the legs.

[Explanation of symbols]

1 Frame 2, 2, 2, 2 Inner pier 3, 3, 3, 3 Outer sill 4 Mounting bracket 6 Fixed metal fittings 13 Lock button 17 Resin cover 21 Leg body 23 Latch part 25, 25, 25, 25 ribs 26, 26, 26, 26 Notch 28 axis

Claims (3)

[Claims] Claim 1: A frame body made up of a combination of a plurality of crosspieces, a mounting bracket fixed to a proper position on the frame body, a fixing bracket fixed to the mounting bracket, and a resin cover covering the periphery of the fixing bracket, A frame leg device comprising a leg integrally molded from a synthetic resin from top to bottom, the fixing fitting and the top of the leg being connected by a shaft so that the leg can be bent freely. 2. A latching portion is provided at the upper end of the leg body, a locking button for latching with the latching portion and releasing the latching is provided on the upper part of the fixing metal fitting, and the lock button and the latching 2. The frame leg device according to claim 1, wherein a portion for engaging the frame is located directly above the shaft. 3. A plurality of ribs extending in the vertical direction are integrally molded on the inner wall of the leg, a through hole or a notch is provided in the rib, and the shaft is inserted into the through hole or the notch. The frame leg device according to claim 1.