JP2665053B2 - Method of manufacturing car side plate for elevator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In general, the side wall of an elevator car is made of a steel plate, so that its surface is easily damaged by a collision of a load or the like.

The use of an enamel plate having an enameled surface has been introduced in Japanese Patent Publication No. 62-60303, etc. It is also considered that the treated decorative panel is bonded to the surface of a conventional metal side wall plate for use.

[0004]

However, when the surface is subjected to an enamel treatment, the surface is heated at 760 ° C. to 85 ° C. during firing.
At a temperature of 0 ° C., the base metal sheet is deformed. In particular, as shown in FIG. 2, a window 1a corresponding to the driving operation panel is punched out of the side wall 1 of the car side wall where the driving operation panel is mounted. Apply glazing and dry after drying 760 ℃ ～ 850 ℃
When forming the enamel film 3 by firing at the temperature of
Since the width of the base metal sheet 2 located on both sides of the base metal is relatively narrow, the base metal sheet 2 is deformed as shown in FIG. The purpose of the present invention is
An object of the present invention is to provide a method of manufacturing a car side plate for an elevator, which can prevent deformation at the time of firing and can be flattened even if it has a window corresponding to the rotating operation panel.

[0005]

According to the present invention, in order to achieve the above object, a window corresponding to a driving operation panel is formed in a thin base metal sheet, and bent portions for reinforcement are formed at both ends sandwiching the window. It is characterized in that enamel firing is performed in this state, and thereafter, the both bent portions are cut to have predetermined dimensions.

[0006]

The elevator car side plate according to the present invention is fired after forming the window and the bent portion for reinforcement as described above, so that even if the width becomes narrow due to the formation of the window, it is reinforced by the bent portion. No deformation occurs during firing. In addition, after firing, the bent portion is cut and finished to a predetermined size, so that a flat car side plate can be obtained with a window that matches the operation panel.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a base metal sheet 2 before firing, and its thickness is about 0.5 mm to 1.2 mm. A window 1a corresponding to the operation panel is formed in the base metal plate 2, and bent portions 1b are formed at both ends of the base metal plate 2 with the window 1a interposed therebetween. The virtual cutting line 4 is determined by the finished width dimension L, and a plurality of hanging holes 5 are formed on the end side of the virtual cutting line 4.

A glaze is applied to the surface of the base metal thin plate 2, and after drying, a hanging metal fitting (not shown) is engaged with the hanging hole 5 and put into a furnace, where it is fired at a temperature of 760 ° C to 850 ° C. Thereby, the enamel film 3 is obtained on the surface.
Although the base metal sheet tends to be deformed by the heat at the time of firing, particularly at narrow portions on both sides of the window 1a, the deformation can be prevented because it is reinforced by the bent portion 1b. . After the firing, the flat car side plate 1 having a predetermined width L can be obtained by cutting along the virtual cutting line 4.

[0010]

As described above, according to the present invention, a reinforcing portion is formed on a base metal plate 2 before firing by a bent portion 1b, and deformation at the time of firing is prevented by the reinforcing portion. Is cut, so that it is possible to obtain a flat car side plate which is not thermally deformed despite having a window.

[Brief description of the drawings]

FIG. 1 is a perspective view of an elevator car side plate before firing by a 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]

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

Continued on the front page (72) Inventor Hideki Takasu 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Elevator Service Co., Ltd. (72) Inventor Mitsuo Hanamura 3-14-8 Kitasuna, Koto-ku, Tokyo Hanamura Enamel Industry Co., Ltd. (56) References JP-A-2-37813 (JP, A) JP-A-58-9898 (JP, A)

Claims (1)

(57) [Claims] 1. A method of manufacturing an elevator car side plate comprising a base metal sheet having a window at a portion corresponding to a driving operation panel and enameling the surface, wherein the base metal sheet includes the window, A method of manufacturing a car side plate for an elevator, wherein enamel firing is performed in a state where bent portions for reinforcement are formed at both ends sandwiching a window, and after the firing, the bent portions are cut to have predetermined dimensions. .