JPS6261504B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an elevator car, and particularly to an elevator car whose side walls are constructed by connecting a plurality of enamel plates to each other.

[Background of the invention]

The side walls of an elevator car are easily visible to users, and are required to have a certain degree of aesthetic appeal in terms of color and other aspects.

On the other hand, the side walls of elevator cars are easily scratched by objects being loaded, and are also relatively often scratched or stained by graffiti or mischief by users.

From this point of view, the side walls of elevator cars are made of, for example, stainless steel to make them less susceptible to graffiti and to avoid being easily scratched by luggage or other items. Stainless steel materials are generally satisfactory in terms of strength, but are limited in color and have drawbacks in terms of aesthetics.

On the other hand, enamel materials have recently been attracting attention as construction materials for housing equipment such as buildings. Enamel material has the advantage of being highly fire resistant, hardly causing any damage even if it is hit by something, and being rich in color with little deterioration of color.

FIG. 4 shows the cross-sectional structure of the enamel plate. After coating the base metal 6 with a glaze 7 and drying it,
Fired at a temperature of 800℃ to 850℃ to make enamel plate 1
is formed. Firing distortion occurs in this enamel plate 1 due to the difference in coefficient of thermal expansion between the base metal 6 and the glaze 7.

For this reason, when using enamel plates for the side walls of the elevator, as shown in the plan view of Fig. 3, the width, D ₁ ,
D ₂ Enamel plates 1a, 1b divided into...
It is necessary to connect and connect them to each other to form the side wall. In this case, it is known that if the width of the division is about 300 to 500 mm, the negative effects of firing distortion will not occur.

If the joint connection part C in Fig. 3 is enlarged to show its structure, it becomes as shown in Figure 2. In the joint connection part C, the ends of the enamel plates 1a and 1b are bent in the same direction and arranged facing each other. be done. Next, a bolt 4a is passed through the opposing portion and riveted using a spring washer 4b and a nut 4c.

In this case, the bent portion R of the enamel plates 1a, 1b
In this case, stress is concentrated and the glaze 7 in this area is likely to come off. Furthermore, since a direct load is applied to the glaze 7 in the portions of the enamel plates 1a and 1b that are brought into contact with each other for riveting, the glaze 7 is destroyed.

In order to solve these drawbacks, the inventors have proposed a method in which a T-shaped joint is interposed in the joining connection part and an elastic body is used.

FIG. 5 shows the configuration of the system proposed by the inventors, in which a T-shaped joint 3 is inserted between the bent opposing portions of the enamel plates 1a and 1b. Furthermore, joint 3 and each enamel board 1
Felts 2a and 2b as elastic bodies are disposed between the opposing portions a and 1b. In this way, a direct impact is not applied to the bent portions R of the enamel plates 1a and 1b, and the joint 3 and the enamel plate 1
Since there is a gap A between the surfaces of a and 1b,
Glaze 7 does not come off in this part.

Further, since the felts 2a and 2b are inserted, no load is directly applied to the opposing portions of the enamel plates 1a and 1b during riveting, and the glaze 7 is prevented from being destroyed.

However, in the method shown in Fig. 5, it is necessary to insert the felts 2a and 2b between the opposing parts of the enamel plates 1a and 1b and the joint 3 during riveting, which complicates the assembly work and increases the number of manufacturing steps. It's easy to do. In addition, there is Utility Model Application Publication No. 50-136159 as a technology related to elevator cars.

[Purpose of the invention]

The present invention solves the various problems existing in the background art as described above, and makes it possible to efficiently perform the riveting work when joining and connecting a plurality of enamel plates to each other to form a side wall. The purpose is to provide elevator cars.

[Summary of the invention]

In order to achieve such an object, in the present invention, the joint parts of the enamel plates that are mutually joined and connected are fired without applying enamel glaze, and the joint parts of the enamel plates are fired without applying enamel glaze. It is constructed with joints that cover areas that are not coated with glaze.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on examples thereof and with reference to the drawings.

FIG. 1 shows the configuration of the main parts of an embodiment of the elevator car of the present invention. In the joint portion where the enamel plates 1a and 1b are disposed facing each other when they are joined and connected, no enamel enamel is applied. The enamel board is fired.

That is, the end portions of the enamel plates 1a and 1b, which will become the joint portions E and F, respectively, are fired without applying the glaze 7 over a predetermined length. The enamel plates 1a and 1b thus formed are bent in the same direction by forming a bent portion at a position B from the boundary with the glaze 7 portion of this predetermined length portion.

The embodiment uses a T-shaped joint 3, and the joint parts E and F of the enamel plates 1a and 1b are arranged opposite to each other with the joint 3 interposed therebetween. Enamel board 1
A bolt 4a is inserted through the joints E and F of a and 1b and the plate surface of the joint 3, and using a spring washer 4b and a nut 4c, the enamel plates 1a and 1b are fixed at the joints E and F. are riveted to each other.

The joint 3 is extended perpendicularly to the joints E and F, and is arranged parallel to the enamel plates 1a and 1b while maintaining a gap A, and both ends of the extended portion are connected to the bent portions R of the enamel plates 1a and 1b, respectively. be placed in a position sufficient to cover the

Since the glaze 7 is not present in the joints E and F of the enamel plates 1a and 1b, there is no need to interpose an elastic body during riveting as in the method shown in FIG. 5. At the joints E and F, the base metal 6 is in direct contact with the plate surface of the joint 3 and is firmly riveted.

There is no need for an elastic body to prevent the 7 parts of the glaze from coming off when the enamel plates 1a and 1b are riveted,
The manufacturing process, which has been complicated due to its insertion, can be simplified and manufacturing efficiency can be improved.

Furthermore, since the bent portion R is completely covered by the joint 3, the aesthetic appearance is not spoiled.

〔Effect of the invention〕

As explained in detail above, in the elevator car of the present invention, there is no need to insert and rivet an elastic body into the joint part of the enamel plate when joining and connecting the side walls, and the rivet work is greatly simplified. By simplifying the method, it is possible to improve manufacturing efficiency and create an aesthetically pleasing sidewall.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing the structure of the main part of an elevator car according to an embodiment of the present invention, FIG. 2 is a sectional view showing the structure of the main part of a conventionally used elevator car, and FIG. Figure 4 is a plan view showing the configuration of the side wall of the elevator car, Figure 4 is a diagram showing the configuration of the enamel plate, and Figure 5 is the configuration of the main parts of the elevator car proposed by the present inventors. FIG. 1, 1a, 1b... Enamel board, 3... Joint,
4a...Bolt, 4b...Spring washer,
4c...nut, R...bent part, 6...base metal, 7...glaze.

Claims (1)

[Claims] 1. In an elevator car whose side walls are composed of a plurality of enamel plates joined and connected to each other, the facing joints of the enamel plates that are joined and connected to each other are fired without applying enamel enamel. 1. An elevator car characterized in that a joint is provided to cover a portion of the joint portion that is not coated with enamel enamel.