JPH04251087A - Manufacture of elevator cage side plate - Google Patents

Abstract

PURPOSE:To provide manufacture of the side plate of an elevator cage preventing deformation during baking even when a window forming facing an operation control panel is made. CONSTITUTION:A window 1a previously formed facing an operation control panel and a base metallic sheet 2 having bent parts 1b formed to the two end parts of the window 1a are prepared. By coating the surfaces of the metallic sheet with glaze for baking, enamel is produced on a surface. Thereafter, cutting is carried out, such that the bent parts 1b at the two end parts of the window 1a are removed, and a side plate having a given size is produced through the cutting.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a side wall of an elevator car, and more particularly to a method of manufacturing a side wall having an operation panel.

0002

2. Description of the Related Art Generally, the side walls of an elevator car are made of steel plates, so the surface is easily damaged by collisions with luggage or the like.

[0003] Therefore, the use of an enameled plate whose surface has been enameled has been introduced in Japanese Patent Publication No. 62-61503, etc.; The use of treated decorative panels adhered to the surface of conventional metal side panels is also being considered.

0004

[Problems to be Solved by the Invention] However, when enameling the surface, the temperature at 760°C to 85°C during firing is
A temperature of 0°C deforms the base metal sheet. In particular, as shown in FIG. 2, a window 1a corresponding to the operation panel is punched out in the side wall 1 of the part of the side wall of the car where the operation panel is attached. Apply glaze and dry at 760℃~850℃
When forming the enamel film 3 by firing at a temperature of
Since the width of the base metal thin plates 2 located on both sides of the base metal plate 2 is relatively narrow, the base metal sheets 2 are deformed as shown in FIG. An object of the present invention is to provide a method for manufacturing an elevator car side plate that can prevent deformation during firing and make the side plate flat even if it has a window corresponding to a continuous operation panel.

[0005]

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention has a base metal sheet formed with a window corresponding to the operation panel and reinforcing bent portions at both ends sandwiching the window. It is characterized in that it is enamel-fired in the state, and then both of the bent portions are cut to have a predetermined size.

[0006]

[Function] The elevator car side plate according to the present invention is fired after forming the window and reinforcing bent portions as described above, so even if the width becomes narrow due to the formation of the window, the bent portions can be used to strengthen the side plate. This prevents deformation during firing. Moreover, after firing, the bent portions are cut to give a finished shape to a predetermined size, so it is possible to obtain a car side plate with a flat window that matches the operation panel.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

FIG. 1 shows a base metal thin plate 2 before firing, and its thickness is approximately 0.5 mm to 1.2 mm. A window 1a corresponding to an operation panel is formed on the base metal plate 2, and bent portions 1b are formed at both ends sandwiching the window 1a. The imaginary cutting line 4 is determined by the finished width L, and a plurality of hanging holes 5 are formed on the end side of the imaginary cutting line 4.

A glaze is applied to the surface of such a base metal thin plate 2, and after drying, a hanging fitting (not shown) is engaged with the hanging hole 5, and the plate is placed in a furnace and fired at a temperature of 760° C. to 850° C. As a result, a hollow film 3 is obtained on the surface. The base metal thin plate tends to deform due to the heat during firing, especially at the narrow portions on both sides of the window 1a, but this deformation can be prevented since it is reinforced by the bent portion 1b. . After firing, a flat car side plate 1 having a predetermined width L can be obtained by cutting along the imaginary cutting line 4.

0010

Effects of the Invention As explained above, the present invention forms a reinforcing part in the base metal plate 2 before firing by the bent part 1b, and this reinforcing part prevents deformation during firing. Since the side panels are cut, it is possible to obtain a flat side panel of the car that is free from thermal deformation even though it has a window.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an elevator car side plate before firing according to the manufacturing method of the present invention.

FIG. 2 is a perspective view of an elevator car side plate after firing by the manufacturing method of the present invention.

FIG. 3 is a perspective view of an elevator car side plate after firing by a conventional manufacturing method.

[Explanation of symbols]

1 Side plate 1a Window 1b Bending part 2 Base metal thin plate 3 Enamel 4 Cutting line

Claims (1)

[Claims] 1. A method for manufacturing an elevator car side plate comprising a base metal thin plate having a window in a portion corresponding to an operation panel and enameling the surface, wherein the base metal thin plate has a window and a window. Enamel firing is performed with reinforcing bent parts formed on both ends of the window.
A method for manufacturing an elevator car side plate, characterized in that after the firing, the bent portion is cut to a predetermined size.