JPS6431142U - - Google Patents

Description

[Brief explanation of the drawing]

Fig. 1 is a longitudinal sectional side view of the main part of one embodiment of this invention (an enlarged cross-sectional view taken along line GG in Fig. 2), Fig. 2 is a partially cutaway plan view of the same embodiment, and Fig. 3 is the same embodiment. Figure 4 is the same cross-sectional view as Figure 1, showing the iron lid of the embodiment rotated to a half-open position exceeding 90 degrees, and Figure 4 is the same as Figure 3, showing the support rod engaged with the lower surface of the iron lid of the same embodiment. FIG. 5 is a cross-sectional view showing the iron lid of the same embodiment in a fully open state by rotating it in a horizontal plane. FIG. (D-D sectional enlarged view), Fig. 7 is a schematic plan view of the same conventional example, and Fig. 8 is A-A with the receiving frame omitted from Fig. 6.
The sectional view, Figure 9 is the CC sectional view of Figure 6, and the 10th
The figure is a cross-sectional end view taken along line B-B in Figure 6, Figure 11 is the same cross-sectional view as Figure 6 showing the floating state of the iron lid of the conventional example, and Figures 12 and 13 are the iron lid of the conventional example. Figure 14 is the same cross-sectional view as Figure 6 showing the process of opening the lid by rotating it in a horizontal plane, Figure 14 is the same cross-sectional view as Figure 6 showing the iron lid of the conventional example inverted and opened, and Figure 15 is the same cross-sectional view of the conventional iron lid. FIG. 7 is a longitudinal sectional side view of the main part of another example of the hinge, showing a state in which the iron lid is rotated to a half-open position exceeding 90 degrees. 1... Iron lid, 2... Receiving frame, 21... Head, 22
... protruding shaft, 51 ... hinge hardware, 52 ... convex part,
55...Opening/closing direction groove, 56...Bending groove.

Claims (1)

[Scope of utility model registration request] The iron lid and the receiving frame forming the opening closed by the iron lid are connected by a hinge, and the iron lid has both inner surfaces that are open to the lower surface and the outer peripheral surface of the outer edge of the iron lid and are perpendicular to the upper surface of the iron lid. An opening/closing direction groove of a constant width along the opening/closing direction of the iron lid is provided, and a bending groove of a substantially constant width is provided on both inner surfaces of the iron lid, and the bent groove opens symmetrically on both sides from an outer end position near the outer edge inward and further downward. established,
The upper part of the hinge is formed to have a width corresponding to the groove width of the opening/closing direction groove, and is positioned within the groove, and protruding shafts are provided on both sides of the upper end that protrude into the bent groove to engage with the iron lid. , the receiving frame is provided with a protrusion having an insertion hole through which the lower part of the hinge metal piece is inserted to allow vertical movement of the hinge metal piece; the lower part is rotatable within the insertion hole when the hinge metal piece moves upward; In a hinge having a predetermined shape, when the iron lid is turned from a closed state to a half-open position by rotating more than approximately 90 degrees around the protruding shaft, the inner edge of the upper end of the receiving frame and the upper surface side of the iron lid are in contact with each other. When the inner surface of the insertion hole on the center side of the receiving frame is in contact with the lower part of the hinge metal piece, the lower surface of the iron lid with the opening/closing direction groove on both sides of the upper end of the hinge metal piece at a slightly inside position than the protruding shaft. A hinge for an iron lid that has a convex part that touches the side edge.