JPH0217111Y2 - - 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 almost one year (at supermarkets etc. where people come and go frequently)
Doors are opened and closed about 1 million times 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, becomes quite worn out, and the door wheel's rotation and therefore the door's opening and closing movements become damaged. 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 desired 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 reinforcement member 4 in the form of a rod or plate is attached to the groove of the main body 2, and at least most of the upper surface of the door suspension rail on which the door roller 6 attached to the door is placed is reinforced by the reinforcement member 4. Defined by the top surface of the member. 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 set 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.In this case, the adhesive is applied to the bottom of the reinforcing member. Even if only the adhesive was present, the weight of the suspended door would force the adhesive onto the upper surface of the rail, causing a problem in that the smooth rotation of the door roller would be 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 pair of protrusions extending parallel to its longitudinal direction with an adhesive surface in between, and the rail member is positioned by being positioned between the pair of protrusions; A door suspension rail characterized in that the rail member constitutes at least a part of a rail rising portion by bonding between the pair of protrusions on the rail body using the bottom surface of the rail member as an adhesive surface. is provided.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in more detail to the accompanying drawings, which illustrate preferred embodiments of door suspension rails constructed in accordance with the present invention.

Referring to FIG. 2, the illustrated door suspension rail is composed of a rail body 42 and a rail member 44.

The main body 42 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 41 (only a portion of which is shown) of a suitable form used in an automatic door device. It is formed as a result. A pair of parallel protrusions 45 and 45' extending in the longitudinal direction (direction perpendicular to the plane of paper in FIG. 2) are provided on the upper surface of the main body 42. Such a pair of protrusions 45 and 4
5' acts as a guide when positioning the rail member 44.

In the specific example, the rail member 44 constitutes the entire rail rising portion, and includes a pair of protrusions 45 and 4.
A pair of protrusions 45 and 4 on the upper surface of the rail main body 42 are sandwiched between 5' and the bottom surface serves as an adhesive surface.
It is adhered to the adhesive surface between 5'. This rail member 4
The cross-sectional shape of 4 may be any suitable shape that corresponds to the cross-sectional shape of the groove of the door roller (see Figure 1) placed on the door suspension rail, but generally, at least a large portion of its upper surface is substantially flat. In particular, when the cross-sectional shape of the groove of the door roller is trapezoidal as shown in the figure, it is preferable that the cross-sectional shape is substantially trapezoidal, and that both side edges of the upper surface are slightly rounded. The bottom surface of the rail member 44 is bonded to the rail body 42 with adhesive, but if the top surface of the rail member 44 is worn out due to rotation of the door roller, the adhesive surface is peeled off and the rail member 44 is removed, and a new rail is installed. Replace with parts. In the illustrated embodiment, for this replacement, the rail body 4
2 is provided with at least one through hole 49, and by inserting a tool (not shown) from below into the through hole 49 that passes through the main body 42, the rail member 44 can be lifted while peeling off the adhesive. The rail member can be easily removed.

The rail member 44 is preferably made 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 formed of any suitable soft metal, such as aluminum or an aluminum-based alloy, if the frequency of replacement is not considered.

In the above specific example, as can be easily understood from FIG. 2, when the adhesive surface is loaded, the adhesive is
Since the adhesive protrudes into the V-shaped cross-sectional gaps 47, 47' formed by the rail members 46 and 5, 45', the adhesive does not protrude onto the upper surface of the rail, and therefore does not impede the smooth rotation of the door roller. do not have.

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 there is no possibility that the adhesive will protrude onto the top surface of the rail. , the door wheel always rotates smoothly. 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 cross-sectional view of the door suspension rail proposed earlier by the present inventor. FIG. 2 is a sectional view showing a specific example of the door suspension rail according to the present invention. 41... Chassis, 42... Rail body, 44
...Rail member, 45 and 45'...Protrusion, 47
and 47'... gap.

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 pair of protrusions extending parallel to its longitudinal direction with an adhesive surface in between; The rail member is positioned by being positioned between the pair of protrusions, and the rail member is bonded between the pair of protrusions on the rail body using the bottom surface of the rail member as an adhesive surface. A door suspension rail comprising at least a part of a rising portion of the rail. 2. The door according to claim 1, wherein the rail member constitutes the entire rail rising portion by bonding between the pair of protrusions on the rail body using the bottom surface as an adhesive surface. suspended rail. 3. The door suspension rail according to claim 1 or 2, wherein the rail body is formed with at least one through hole into which a tool for removing the rail member is inserted.