JPH0238746B2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a spring hinge, and includes:
Unlike the conventional structure in which the blades rotate around an axis and the spring force is constantly applied, this structure does not have blades and the spring force is applied elastically, which improves the appearance and opening/closing operation. It is an efficient structure.

An embodiment of this invention will be explained with reference to the drawings.
As shown in Fig. 1 and Fig. 2, the whole is constructed by fitting bearings 2 and 3 on both ends of a shaft cylinder 1, applying adhesive in advance to one of the bearings 2, and fixing it to the shaft cylinder 1. A spring member 4, which is made by bending a metal wire into a U shape and crossing its legs 4a and 4b, is enclosed in the shaft cylinder 1 in advance, and both ends of the spring member 4 are connected to bearings 2 and 3, respectively.
One side is fixed to a bearing 3, and the other side is fixed to a bearing 2 which is integral with the shaft cylinder 1. 2b and 3b are bearings 2 and 3b, respectively.
It is a protrusion for preventing rotation provided on the outer surface of 3.

The above device mounts the bearings 2 and 3 at a desired location as mounting members, and its operation will be explained with reference to Fig. 3. (1) Fig. 3A shows a normal state in which no torsional force is applied. In this case, the anti-rotation protrusion 2
b and 3b are oriented laterally to each other, and the spring member 4 is in a state in which the leg portion 4a overlaps the front surface of the leg portion 4b.

(2) Now, while keeping one bearing 2 fixed, turn the other bearing 3 clockwise as seen from the right side of the figure.
When rotated 90 degrees, the spring member 4 rotates both legs 4a, 4.
b The tips line up horizontally and try to return to their original positions due to elasticity. (Fig. 3B) (3) When the bearing 3 is further rotated 90 degrees, the spring member 4
The legs 4a and 4b are uncrossed and are in a substantially parallel state. (Fig. 3c) (4) When the bearing 3 is further rotated by 90 degrees, the tips of both legs of the spring member 4 are aligned in the horizontal direction, and the spring member 4 tends to rotate further due to its elasticity. (Fig. 3D) (5) When the bearing 3 is further rotated in this way, the spring member 4 becomes stable with the leg part 4b weighing against the front surface of the spring member 4a, and the bearing 3 is in the initial state (Fig. A )
It's getting closer to 360°. (Fig. 3E) In this way, by attaching the bearings 2 and 3 to the required fixed members and movable members, the hinge can be efficiently formed.

FIG. 4 shows the present invention applied to a door hinge, in which the bearing is formed directly on the thick and solid stile and door plate. In other words, the lintel, which is a stile, and the standing hole 2' in the sill,
2', and vertical holes 3', 3' are provided in the door body, and the shaft tubes 1, 1 are fitted into these vertical holes 2', 3', 2', 3' together with spring members 4, 4. be.

Further, FIG. 5 shows a modification of the spring member shown in FIG.
The spring member 14 and the shaft cylinder 11 are fixed together by extruding the middle part of the shaft cylinder 11 that envelops the spring member 14 inward and fixing the spring member 14 and the shaft cylinder 11 by this part 11'. As in FIG. 4, the bearing is formed on the member to which it is attached.
This product is suitable for use as an opening/closing lid of a box body as shown in FIG. That is, both ends of the shaft tube 11 are fitted into the recessed holes 12' and 13' provided in the box part of the synthetic resin box body, and both ends of the spring member 14 are inserted into the recessed holes 12' and 13'.
2', 13', and the shaft cylinder 11.
By having a structure that is embedded and fixed in the edge of the lid body, the wing plate and shaft of a conventional hinge do not appear inside the box body, so it looks good, and when opening the lid body,
When the lid becomes horizontal as shown in Figure 6B, the spring force works to open it in the opposite direction (see Figure 3), so the lid remains open, making it convenient for taking out the contents and displaying them. It is.

As explained above, this invention is aesthetically pleasing because the shaft and blade plates do not appear on the outside unlike conventional hinges, and the load applied to the hinge can be reduced by using a wing that has a shaft on one side unlike conventional hinges. Unlike those that are cantilevered on a plate, there are many advantages such as being able to hang directly on the shaft cylinder, so it is not difficult to do so.

[Brief explanation of drawings]

Figure 1 is a side sectional view, Figure 2 is an exploded perspective view, Figure 3 A, B, C, D, and E are side sectional views showing the operating state, and Figure 4 is a door hinge. FIG. 5 is a side sectional view showing a modification of FIG. 1, and FIGS. 6A and B are a cross-sectional plan view and a front view of the box using the box shown in FIG. 5. . Codes in the figure: 1 and 11 are shaft cylinders, 2 and 3 are bearings,
4 and 14 indicate spring members.

Claims (1)

[Claims] 1 The shaft cylinder 1 is fitted into the opposing bearings 2 and 3, one end of the shaft cylinder 1 is fixed to one of the bearings 2 to form a set of mounting members, and a metal wire is bent inside the shaft cylinder. A spring member 4 in which both leg portions 4a and 4b cross each other is fitted and accommodated, and a loop portion of the spring member 4 is fixed to a bearing 2 fixing the shaft cylinder 1, and the leg portions 4a and 4b of the spring member is a spring hinge characterized by being locked at a required location.