JPH0217110Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a door suspension rail in an automatic door device,
More specifically, the present invention relates to a door suspension rail in an automatic door device for supporting a door roller rotatably attached to the door and suspending the door movably in the opening/closing direction.

As is well known to those skilled in the art, in recent years, from the viewpoint of production costs, etc., it has become possible to suspend the door integrally with the chassis of the automatic door device by extruding soft metal such as aluminum or aluminum-based alloy. Forming rails is widely used in practice.

However, for door suspension rails formed by extrusion, soft metals such as aluminum or aluminum-based alloys, which can be easily extruded into the desired shape, have relatively low wear resistance. , it has been found that they have the disadvantage of a relatively short lifespan. For example, in automatic door systems installed at entrances and exits of supermarkets and other places where people frequently come and go, a door suspension rail made by extruding soft metal is used as a door suspension rail to suspend a door weighing approximately 75 kg. for about a year (in supermarkets and other places where people come and go frequently, the doors are opened and closed about 1 million times in a year)
Over time, the upper surface of the door suspension rail, where the door wheel rotatably attached to the door rotates when the door opens and closes, has become considerably worn out, and the door wheel's rotation and therefore the door's opening and closing movements have become severely worn out. It has been empirically confirmed that the smoothness of the process deteriorates significantly and becomes unacceptable.

In order to solve such problems, for example, the door suspension rail can be formed separately from the chassis by machining a hard metal such as steel with excellent wear resistance, and then connected as appropriate. It is conceivable to connect it to the chassis using a tool. However, in this case, in addition to the considerably complicated work of connecting the door suspension rail to the chassis, the manufacturing cost increases significantly due to the machining required to form the door suspension rail with the required cross-sectional shape. increases to

The inventor of this invention previously proposed a door suspension rail for an automatic door device that solved the above-mentioned problems.
−136056). As shown in FIG. 1, this door suspension rail includes an extruded soft metal main body 2 having a groove opening on the top surface and extending in the longitudinal direction;
A hard metal reinforcing member 4 in the form of a rod or plate is attached to the groove of the main body 2, and at least a large part of the upper surface of the door suspension rail on which the door roller 6 attached to the door is placed is covered by the reinforcing member. defined by the top surface of Therefore, this door suspension rail has excellent wear resistance, and even if the top surface becomes worn due to repeated opening and closing movements of the door, the reinforcing member 4 can be easily replaced, thereby extending the life of the door suspension rail. Can be kept for a long time. However, when the thickness of the reinforcing member is reduced to the minimum necessary 2 to 3 mm,
It is necessary to use adhesive to fix the reinforcing member in the groove of the main body, and in this case, even if the adhesive is only present at the bottom of the reinforcing member, the weight of the suspended door will cause the adhesive to spread to the top of the rail. This caused the problem that the door roller was pushed out and the smoothness of rotation of the door roller was significantly hindered.

The present invention provides a new and excellent door suspension rail for an automatic door device that solves these problems.

According to the present invention, a door suspension rail for an automatic door device includes an extruded rail body and a rail member defining the upper surface of the rail on which a door roller is placed, and the rail member is bonded to the rail body. ; The rail body is provided with a protrusion on the adhesive surface in its longitudinal direction, while the rail member is provided with a groove on the bottom surface, and the protrusion is fitted into the groove to allow the adhesive to be attached. A door suspension rail characterized in that the rail member is positioned and is bonded to the rail body using the bottom surface of the rail member as an adhesive surface so that the rail member constitutes at least a part of a rail rising portion. is provided.

The present invention will now be described in further detail with reference to the accompanying drawings, which illustrate preferred embodiments of door suspension rails constructed in accordance with the present invention.

Referring to FIG. 2, the door suspension rail of the first embodiment constructed according to the present invention is composed of a rail body 22 and a rail member 24. As shown in FIG.

The main body 22 of the door suspension rail is formed by extruding a suitable soft metal such as aluminum or an aluminum-based alloy together with a chassis 21 (only a part of which is shown) of a suitable form used in an automatic door device. It is formed as a result. A protrusion 23 is provided on the upper surface of the main body 22 and extends in the longitudinal direction (direction perpendicular to the plane of paper in FIG. 2). This protrusion 23 acts as a guide when positioning the rail member 24.

The rail member 24 has the above-mentioned protrusion 23 on its bottom surface.
It has a groove into which the rail body 22 is fitted, and is attached to the rail main body 22 using this bottom surface as an adhesive surface.

In the door suspension rail shown in Fig. 2,
The rail member 24 constitutes the entire rising portion of the rail, and its cross-sectional shape may be any suitable shape corresponding to the cross-sectional shape of the groove of the door roller 26 placed on the door suspension rail, but generally, At least a large portion of its upper surface is substantially flat, particularly when the cross-sectional shape of the groove of the door roller 26 is trapezoidal as shown.
Preferably, it is substantially trapezoidal, with slightly rounded edges on both sides of the upper surface. The bottom surface of the rail member 24 is bonded to the rail body 22 with an adhesive, but if the top surface of the rail member is worn out due to rotation of the door roller, the adhesive surface is peeled off and the rail member 24 is removed, and a new rail member is installed. Replace with. The adhesive surface is peeled off by inserting a screwdriver or the like into the adhesive surface.

In fact, since the lower side edges of the rail member 24 and the upper side edges of the rail body 22 are slightly rounded during molding, the tip of a screwdriver or the like can be easily inserted therein.

The rail member 24 is preferably formed of a hard metal such as steel with excellent wear resistance, a light alloy such as pressed aluminum subjected to surface hardening treatment such as alumite treatment, or a highly wear-resistant synthetic resin. , it may be made of any suitable soft metal, such as aluminum or an aluminum-based alloy, if the frequency of replacement is ignored.

According to this specific example, as can be easily understood from FIG. 2, when the adhesive surface is loaded, the adhesive protrudes to the side edge of the lower surface of the rail member 24, so the adhesive does not protrude to the upper surface of the rail. Therefore, the smooth rotation of the door roller is not hindered.

A second embodiment of the door suspension rail according to the present invention illustrated in FIG.
It is composed of 4. The main body 32 constitutes a part of the rail rising portion, that is, the lower part, and a protrusion 33 extending in the longitudinal direction is provided on the upper surface thereof.
This protrusion 33 also acts as a guide. The rail member 34 has a groove on its bottom surface into which the protrusion 33 is fitted, and is bonded to the rail body 32 using the bottom surface as an adhesive surface. This rail member 34
constitutes the remainder, ie, the upper part, of the rail rising portion.

In this specific example, as can be easily understood from FIG. 3, when the adhesive surface is loaded, the adhesive overflows to the side edge of the lower surface of the rail member 34 located in the middle of the rising portion of the rail. The adhesive will not ooze out and therefore will not interfere with the smooth rotation of the door roller.

As described above, the door suspension rail constructed according to the present invention has a long life when a wear-resistant material is used as the rail member, and the adhesive does not protrude onto the top surface of the rail. The door wheel is constantly rotating. Further, even when a soft metal such as aluminum is used as the rail member, it is very economical because it is only necessary to replace the worn rail member.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the door suspension rail proposed earlier by the present inventor. FIG. 2 is a sectional view showing a first specific example of the door suspension rail according to the present invention. FIG. 3 is a sectional view showing a second specific example of the door suspension rail according to the present invention. 21... Chassis, 22 and 32... Rail body, 23 and 33... Protrusion, 24 and 34... Rail member, 26... Door roller.

Claims (1)

[Claims for Utility Model Registration] 1. Comprising an extruded rail body and a rail member defining the upper surface of the rail on which the door roller is placed,
In a door suspension rail for an automatic door device, in which the rail member is bonded to the rail body; the rail body is provided with a protrusion in the longitudinal direction on the adhesive surface, while the rail member has a groove on the bottom surface. provided, and the rail member is positioned by fitting the protrusion into the groove,
Further, the door suspension rail is characterized in that the bottom surface of the rail member is bonded to the rail body as an adhesive surface so that the rail member constitutes at least a part of the rail rising portion. 2. The door suspension rail according to claim 1, wherein the rail member constitutes the entire rail rising portion by bonding the rail member to the rail body using the bottom surface as an adhesive surface.