JP3470085B2 - Timing belt mounting method and mounting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a pull-type automatic door device and the like, which is a timing belt wound so as to be rotationally driven by a power source, and one door traveling on the lower side thereof. By connecting the metal fittings and installing them on the upper side in a sandwiched state with the other door running metal fitting, both doors of the pull-type automatic door device can be opened and closed synchronously. The present invention relates to a suitable method for wearing a timing belt and a wearing tool that can be used for carrying out the wearing method.

[0002]

2. Description of the Related Art The conventional means for mounting a timing belt in the above-mentioned automatic pulling door system will be described below with reference to FIGS. 6 to 8. As shown in FIG. In the door device, as is known, a timing belt d is wound between a manual pulley b driven by a power source a and a vertical pulley c, and its ends are connected to each other by a belt connecting press fitting e. Lower side D
Therefore, the belt connection holding metal fitting e is connected to the door running metal fitting g1 attached to the one door f1. In this state, the one door f1 and the other door f2 are adjusted so as to be in the fully closed state as shown at a predetermined combined position, and when the positioning is completed, the door is attached to the door f2. The other running metal g
2 and the upper side U of the timing belt d are connected and fixed by the mounting hardware h.

By the way, in order to mount the mounting bracket h on the timing belt d as described above, conventionally, as clearly shown in FIG. 7, a connecting bracket i whose lower side is fixed to the other door running bracket g2, and a screw for this. The connecting screw rod j to be worn, the first and second belt holding metal fittings k1 and k2 in a half-divided state, and the fastening nuts m1 and m2 are prepared, and these are opened in FIG. 8 (A ) (B) and (C), the assembling work is performed. That is, the above-mentioned connecting metal fitting i and the connecting screw rod j are screwed together, and after fastening and fixing using the spring washer n or the like, the first belt holding metal fitting k1 is inserted into the first proximal end side insertion hole p1 shown in FIG. On the other hand, by penetrating the connecting screw rod j, the state shown in FIG. 8A is obtained, and in this state, the known timing belt d shown in FIG.
It is engaged so as to mesh with the first meshing wave type tooth portion q1 of FIG.

Next, as shown in FIG. 8B, the second belt holding metal fitting k2 is fitted into the second proximal end side insertion hole p2 of the second belt holding metal fitting k2, so that the timing belt d is fitted to the second belt holding metal fitting. After the second meshing corrugated tooth portion q2 of k2 is engaged to bring the first and second belt holding metal fittings k1 and k2 into a butted state, a fastening nut m screwed to the connecting screw rod j.
The timing belt d is completely held by the first and second belt holding metal fittings k1 and k2 by tightening the fastening members 1 and m2. Therefore, according to the first conventional method, since the mounting bracket h has a considerable number of parts,
Not only is the labor and time required to assemble this, a considerable amount of space is required to secure its storage space, and it requires manpower to manage these fine parts, resulting in an in-house assembly process. Since it concentrates on one department, it is easy for various misoperations to occur.

Therefore, in order to eliminate the defects of the first conventional example, and as the second conventional example, in order to improve the above-mentioned disadvantages, a large number of controlled parts are not assembled in sequence but these Parts of the company are managed as an assembled state in another department in the company, or the assembly work is transferred to the subcontractor in order to reduce the burden in the company, and it is a temporary assembled product in the company that has already been assembled or received from the subcontractor. A method of mounting the timing belt d using the temporary assembly described above has already been implemented. Moreover, in the case of the above-mentioned conventional example, although the above-mentioned defects regarding management of parts are improved, a completely assembled product cannot be used as it is, and it must be reassembled after being partially disassembled. Since it does not happen, the disassembling work is added to the assembly process, resulting in duplication of work, and although there are some advantages over the above-mentioned first conventional example, the rationality exceeding this is not recognized.

In addition, according to the second conventional example, when attaching the mounting bracket h to the timing belt d, it is actually located at the attachment destination of the pull-type automatic door device or the like.
When the separation distance between the manual pulley b and the driven pulley c becomes short due to the shortening of the length of the horizontally installed base r or other reasons, the timing belt for the automatic door device manufactured at the factory After cutting d, it is necessary to determine again the above-mentioned combined position of the one door f1 and the other door f2. In such a case, the horizontal installation installed at a high place is required. By loosening the fastening nuts m1 and m2 on the base r, the mounting tool h must be disassembled, and then the assembly work must be started. For this reason, tightening nuts m during work in high places
When dropping tools such as 1, m2 and other parts or tools such as screwdrivers and pliers, the operator will search for falling parts that have fallen from the stepladder and rolled on the floor surface. It may take a considerable amount of time or be lost, and when another worker is on the floor or an object is placed on it, an unexpected accident such as injury or damage to the article due to a falling object may occur. .

[0007]

SUMMARY OF THE INVENTION The present invention has been studied in view of the deficiencies of the above-described conventional method of mounting a timing belt. In the same manner as the second conventional example, a connecting screw rod fixedly attached to a connecting metal fitting is used. The first and second belt holding metal fittings are fitted, and a fastening nut is screwed into the connecting screw rod to be in a temporary assembled state. When this is attached to the timing belt, the second belt It is not necessary to disassemble and assemble the folded assembly as in the conventional example, but if necessary, simply screw the tightening nut so as to loosen it a little. The timing belt is inserted from the separated gap, which is the wide state of the first and second retaining edge portions, and the first and second interlocking tooth portions of the first and second belt holding metal fittings are mounted. As a mounted state By tightening the tightening nut sufficiently after that, the timing belt can be held, and of course, in this case, there is a narrow state or a gap between the first and second retaining end edges. Although it will be opened, the timing belt must be installed in a condition that can be put to practical use, so that extremely quick installation work can be completed without disassembling temporary assembly parts, and parts can be installed on the floor. The purpose is to try to eliminate problems such as injuries and loss or loss of goods that are caused to fall on the surface.

As a mounting tool according to a second aspect of the invention, as described above, only the first and second retaining edge portions of the first and second belt holding metal fittings are completely abutted with each other as in the prior art. The object of the mounting method according to the above-mentioned claim 1 can be sufficiently achieved only by appropriately reducing the size of the first and second connecting rods without setting them in a long dimension. (2) The purpose of the present invention is to allow the timing belt to be loaded by setting the retaining edge portion and thereby prevent the connecting screw rod from hitting other members.

Next, in the method of mounting a timing belt according to a third aspect of the present invention, unlike the first aspect of the present invention, only one belt holding metal fitting is inserted into the connecting screw rod instead of a pair. , The timing belt is inserted from the widened gap formed between the retaining edge and the connecting metal fitting so that the timing belt can be engaged and mounted on the meshing wave-shaped tooth portion of the belt holding metal fitting, and thereafter. By tightening the tightening nut on, the timing belt can be quickly and easily attached without any worry of pulling out due to the retaining edge, leaving a gap and leaving a gap. Therefore, we are trying to improve the operability of the work.

According to the mounting tool of claim 4, the object of the invention as set forth in claim 2 can be satisfied, and at the same time, it is possible to reduce the number of the constituent members, and thus the cost can be reduced. The purpose is to give sufficient reliability to the operability in work.

[0011]

According to the present invention, in order to achieve the above object, in the first aspect of the present invention, the connecting screw is provided in advance at the connecting end of the connecting fitting, and the connecting screw is connected. The first belt holding metal fitting and the second belt holding metal fitting are sequentially inserted into the first base end side insertion hole and the second base end side insertion hole in the first and second base end portions, respectively, and the connection screw rod. A mounting tool prepared by screwing a fastening nut to the protruding end is prepared in advance, and as a preceding step or a subsequent step of the step of mounting the mounting end of the fitting for the mounting tool to a required location, Widening between the first and second retaining edge portions of the timing belt projecting from the first and second belt holding metal fittings so as to face each other, by reversely screwing the fastening nut as required. By inserting from the separated gap which is the state, After the corrugated portion of the timing belt made of the same is meshed with the first and second meshing wave type tooth portions of the first and second belt holding metal fittings in the straddling state, the tightening nut described above is straightened. By screwing, the first and second belt holding metal fittings are pushed toward the connecting metal fittings to be in a tightened state, whereby the first and second belt holding metal fittings of the first and second belt holding metal fittings are tightened. The two base end portions and the first and second meshing wave type tooth portions connected to the two base end portions are brought into pressure contact with each other, and the timing belt in the meshed state is continuously connected to the first and second base end portions. The first and second bottom end portions of the first and second meshing wave type tooth portions protruding from the first and second bottom end portions, and the first and second upright portions continuously provided in an orthogonal manner from the first and second bottom end portions, and in an orthogonal manner from these. It is held by the curved first and second retaining edge portions, whereby the front portion is held between the first and second retaining edge portions. Spaced voids consisted of the widening state narrow state is about to provide a method of mounting the timing belt, characterized in that it has to be left behind.

Next, a second aspect of the present invention relates to a timing belt device which can be used to achieve the object of the first aspect, and includes a connecting metal fitting and a connecting screw rod projecting from a connecting end of the connecting metal fitting. It is composed of a pair of first and second belt holding metal fittings and each member of a fastening nut screwed to the above-mentioned connecting screw rod, and the fitting end of the connecting metal fitting is attached to a desired position with a screw or the like. Attachment holes for wearing are formed, and the first and second belt holding metal fittings are provided with first and second base end side insertion holes at their first and second base end portions, respectively. Along with the first and second base end portions, first and second bottom end portions having first and second meshing wave type tooth portions projecting therefrom, and first and second upright portions which are orthogonally bent from the first and second bottom end portions. And the first and second retaining edge portions bent in a perpendicular manner from these portions, and the first and second belt holding metal fittings described above are provided. 1, a second proximal end side insertion hole is inserted into the connecting screw rod, and a fastening nut is screwed to the protruding end portion of the connecting screw rod, and is composed of a band portion and a wavy portion. When the timing belt is inserted from the separated gap which is the widened state between the first and second belt holding metal fittings, the timing belt is mounted on the first and second interlocking tooth portions of the first and second belt holding metal fittings. The first and second base end portions and the first and second meshing wave type tooth portions connected to the first and second base end portions are brought into pressure contact with each other by fitting and mounting by tightening the fastening nut.
The timing belt in the fitted state is the first and second
The bottom end portion and the first and second upright portions and the first and second retaining edge portions can be embraced freely, and the first and second retaining edge portions can be extended from the widened state. The content of this method is that the separated voids that have become narrow are left.

Further, according to a third aspect of the present invention, a connecting screw is provided in advance on the connecting end of the connecting metal fitting, and the belt holding metal is attached to the connecting screw, and the base end side insertion hole at the base end thereof. A fitting tool that is inserted into the connector and has a fastening nut screwed to the protruding end of the connecting screw is prepared, and the mounting end of the fitting for the fitting tool is attached to a required location. As a pre-stage or a post-stage of the step, the timing belt is reversely screwed as necessary to widen the timing belt between the connecting end of the connecting fitting and the retaining edge of the belt holding fitting. By inserting the corrugated portion of the timing belt, which is composed of the strip portion and the corrugated portion, into the interlocking corrugated tooth portion of the belt holding metal fitting, the fastening nut is inserted. The screw By pushing the belt holding metal fitting toward the connecting metal fitting to bring it into a tightened state, the base end portion of the belt holding metal fitting and the connecting metal fitting are brought into a pressure contact state, and the timing of the meshing state. A belt, a bottom end portion which is continuously provided to the base end portion and in which the meshing wave type tooth portion is projected, and an upright portion which is continuously provided in an orthogonal manner from the bottom end portion,
It is held by a retaining edge that is bent in an orthogonal manner from these, and as a result, a separation gap that has changed from the widened state to the narrow state is left between the connecting metal fitting and the retaining edge. The present invention intends to provide a method for wearing a timing belt, which is characterized by the above.

Further, a fourth aspect of the present invention relates to a timing belt device which can be used to achieve the object of the third aspect, and includes a connecting fitting, a connecting rod projecting from a connecting end of the connecting fitting, and a belt. It is constituted by each member of the holding metal fitting and the fastening nut screwed to the above-mentioned connecting screw rod, and the connecting metal fitting has an attachment hole for attaching the attachment end portion to a desired position with a screw or the like. The belt holding metal fitting is provided with a base end side insertion hole at the base end portion thereof, and a bottom end portion provided with a meshing type tooth portion protruding from the base end portion, The belt holding metal fitting is provided with an upright portion bent in an orthogonal shape and a retaining edge edge bent in a right angle from the upright portion, and the belt holding metal fitting is inserted through a base end side insertion hole thereof. Insert the fitting nut into the connecting screw and attach a fastening nut to the protruding end of the connecting screw. In the combined state, the timing belt composed of the belt-shaped portion and the corrugated portion is inserted into the belt-holding metal fitting by the insertion from the separation gap which is the widened state between the retaining metal edge of the metal fitting and the belt-holding metal fitting. It is not possible to mount on the meshing wave type tooth portion, and the base end portion and the meshing wave type tooth portion connected to the base end portion by pressure screwing of the fastening nut are pressure-welded to the connecting end portion of the connecting metal fitting. As a state, the timing belt in the meshed state can be embraced by the bottom end portion, the upright portion, and the retaining end edge portion, and between the retaining end edge portion and the connecting end portion of the connecting fitting. The content of the method is such that the separated voids that have changed from the widened state to the narrowed state are left.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Prior to explaining a method of wearing a timing belt according to claim 1 of the present invention, a timing belt wearing tool A1 according to claim 2 will be described with reference to FIG.
3 to 5 will be described in detail below. In the case of the above-mentioned pulling type automatic door device, this mounting tool A1 is a connecting fitting 1 to be fixed to the other door running fitting g2 and the connecting end portion 1a thereof, and the illustrated example is shown. Then, a required number of connecting screw rods 2 which are provided in an orthogonal manner by means of screwing means and a pair of first and second belt holding metal fittings 3 are provided.
A, 3B, and a required number of fastening nuts 4 that are screwed into the connecting screw rod 2 described above.

Now, first, in the above-mentioned connecting metal fitting 1, an attachment hole 1c for attaching the attachment end portion 1b, which is the lower side thereof, to a desired portion with a screw 5 or the like as illustrated in FIG.
However, the required number of holes are formed by round holes, long holes, or the like. The first and second belt holding metal fittings 3A and 3B are provided with first and second base end side insertion holes 3c and 3d in the first and second base end portions 3a and 3b, respectively. , The first and second bottom end portions 3g, 3h that project from the second base end portions 3a, 3b to the first and second meshing wave type tooth portions 3e, 3f and extend outward.
And the first and second standing portions 3 which are bent orthogonally from these
i, 3j, and first and second retaining end edge portions 3k, 3m that are bent inward in a perpendicular shape.

Further, the above-mentioned first and second belt holding metal fittings 3
A and 3B are inserted into the connecting screw rod 2 through the first and second base end side insertion holes 3c and 3d formed in the first and second base end portions 3a and 3b, and the connection is made. The protruding end 2 of the screw rod 2
The aforesaid fastening nut 4 is screwed into a. In this state, as is known, the strip portion 6 is formed in the thickness direction.
Timing belt 6 formed with a and a waved portion 6b
Is the first and second belt holding metal fittings 3A and 3B, and the first and second belt holding metal fittings 3A and 3B are inserted from the widened gap G1 between the first and second retaining edge portions 3k and 3m. 3A, 3B first and second meshing wave type tooth portions 3e, 3f
On the other hand, it is configured so that it can be fitted and mounted in the straddling state. Then, by the above-described normal screw threading of the fastening nut 4, the first and second base end portions 3a and 3b and the first and second meshing wave type tooth portions 3e and 3f that are continuously provided to face each other face each other. With the surfaces in pressure contact, the timing belt 6 is attached to the first and second
The bottom end portions 3g, 3h, the first and second upright portions 3i, 3j, and the first and second retaining edge portions 3k, 3m are embracable so that the first and second retaining edge portions can be held. Between 3k and 3m, the separation gap G is changed from the widened state to the narrowed state.
1 is left.

Since the timing belt mounting tool A1 according to claim 2 is configured as described above, the timing belt mounting method according to claim 1 can be used with respect to the timing belt by using as follows. The mounting work can be performed quickly. According to the present invention, the connecting screw rod 2 is projected from the connecting end portion 1a of the connecting metal member 1 in advance as described above, and the first belt holding metal member 3A and the second belt holding metal member 3B are sequentially attached to the connecting screw rod 2. , The first, respectively
The protruding end portion 2a of the connecting screw rod 2 that is inserted into the first and second proximal end side insertion holes 3c and 3d provided in the second proximal end portions 3a and 3b.
For this purpose, a mounting tool A1 to which the fastening nut 4 is screwed is prepared. Then, the attachment end portion 1 of the connecting metal fitting 1
The following step is performed as a pre-step or a post-step of attaching b to the required place. In the case shown in FIG. 5, the screw hole t of the board S in the other door running metal fitting g2 is used.
In addition, the screw 5 is screwed into the attachment hole 1c, so that the attachment end portion 1b of the coupling fitting 1 is fastened to the substrate S. In the figure, u is the other door running metal fitting g2.
6 shows an attachment base end portion for attaching to the other door f2 in FIG. 6, and v indicates a hanger roller for traveling the door.

In the next step, the fastening nut 4 described above is used.
Is reversely screwed, if necessary, depending on the degree of screwing at that time, so that the timing belt 6 is protruded inward so as to face the first and second belt holding metal fittings 3A and 3B. The first and second retaining edge portions 3k and 3m are charged from the separated gap G1 in a widened state, and if the charging is difficult at this time, the tightening nut 4 is reversely screwed again. Of course, if the charging operation is possible, it is not necessary to screw the fastening nut 4.
At this time, the timing belt 6 is tilted as shown in FIG. 1, and the lower side of the timing belt 6 is advanced as shown in FIGS. 3i, so that the high side is fitted into the second standing member 3j side of the second belt holding metal fitting 3B, and the separation gap G1 has a sufficient length. In this case, as shown in FIG. 3, the horizontal timing belt 6 may be inserted horizontally into the first and second belt holding metal fittings 3A, 3B.

By the above operation, the corrugated portion 6b of the timing belt 6 is placed in mesh with the first and second interlocking tooth portions 3e and 3f of the first and second belt holding metal fittings 3A and 3B in a straddle state. By further screwing the tightening nut 4 forwardly, the first and second belt holding metal fittings 3A and 3B are pushed together toward the connecting metal fitting 1 to be tightened. To do. Thus, the first and second base end portions 3a, 3 of the first and second belt holding metal fittings 3A, 3B.
b, and the first and second meshing wave type tooth portions 3e connected to this,
3f and the first and second standing portions 3 that are arranged in a line orthogonal to each other.
The timing belt 6 is held by i and 3j and the first and second retaining edge portions 3k and 3m that are bent from these in an orthogonal manner. Thus the first,
Between the second retaining edge portions 3k and 3m, there is left a gap G1 which is in a narrowed state from the widened state before fastening, and the first and second retaining edge portions as disclosed in FIG. 3k,
The surface of the belt-shaped portion 6a of the timing belt 6 is partially exposed from the interval of 3 m. As a result, when the mounting method according to claim 1 is used, it is possible to disassemble the mounting bracket according to claim 2 without disassembling the mounting bracket according to claim 2.
It is possible to insert the timing belt 6 into A and 3B quickly and easily, and after a slight fastening operation of the fastening nut 4, only a part of the timing belt 6 is not held. , The first and second retaining edge portions 3
There is no concern that the holding state will be released due to the extension of k or 3 m. In the illustrated example, the connection screw 2 is fixed to the connection fitting 1 by the connection screw hole 3u of the connection end 1b and the spring washer 3v in the same manner as in the conventional example described above.

Prior to a detailed description of the method of mounting the timing belt according to claim 3, the mounting tool A2 of claim 4 will be described below with reference to FIG. 4 in the same manner as above. The difference between claim 4 and claim 2 is that in claim 2, the first and second belt clamps 3A and 3B are incorporated, whereas a single belt clamp 3 is adopted. There is a point. That is, the mounting tool A2 is the connecting fitting 1
And a fastening nut 4 screwed to the belt holding metal fitting 3 and the connecting screw rod 2, and the connecting end portion 1a is formed in a perpendicular shape in the illustrated example. The belt holding metal fitting 3 which is different from the case of the tool A1 will be described below. The belt holding metal fitting 3 is provided with a base end side insertion hole 3n in the base end portion 3 and the base end portion 3r.
From the bottom end part 3 in which the meshing wave type tooth part 3q is projected
s, an upright portion 3t bent orthogonally from this, and a retaining edge 3p bent inward from the upright portion 3t in an orthogonal direction. Then, the belt holding metal fitting 3 is fitted into the connecting screw rod 2 through the base end side insertion hole 3n, and the tightening nut 4 is screwed to the protruding end portion 2a thereof. However, it is possible to mesh with the meshing wave type tooth portion 3q of the belt clamping metal fitting 3 by charging from the gap G2 which is a narrow state between the retaining metal fitting 1 and the belt clamping metal fitting 3 and the retaining edge 3p. As a result, the fastening nut 4 is normally screwed to bring the base end portion 3r and the meshing wave type tooth portion 3q continuous with the base end portion 3r into pressure contact with the connecting end portion 1a of the connecting fitting 1.

Thus, when the mounting tool A2 is used,
The timing belt 6 in the meshed state can be embraced by the bottom end portion 3s, the upright portion 3t, and the retaining edge portion 3p. At this time, the retaining edge portion 3p and the coupling end portion 1a of the coupling fitting 1 are held. The gap G2, which has been changed from the widened state to the narrowed state, is left in between.

3. A mounting tool A2 as described above is used.
To implement the method of wearing the timing belt 6 according to
This will be performed by the following steps. That is, the belt holding metal fitting 3 is fitted and inserted into the base end side insertion hole 3n provided in the base end portion 3r of the connection screw 2 which is provided in advance on the connection end portion 1a of the connection metal fitting 1, and A mounting tool A2 in which a fastening nut 4 is screwed into the protruding end portion 2a of the connecting screw rod 2 is prepared. The fastening nut 1 is required as a step before or after the step of attaching the attaching end portion 1b of the connecting fitting 1 of the mounting tool A2 to the required place, as described in the above claim 1. By reversely screwing the timing belt 6 between the connecting end portion 1a of the connecting fitting 1 and the retaining end edge portion 3p of the belt holding fitting 3, the timing belt 6 is in a widened state and is a separated gap G2.
It is charged from the above, and the wavy portion 6
b is meshed and mounted on the meshing wave type tooth portion 3q of the belt holding metal fitting 3. At this time, it is preferable to use a method in which the timing belt 6 is inclined as described above and one side edge of the timing belt 6 is inserted between the end edge portion 3p and the bottom end portion 3s.

Next, the tightening nut 4 is normally screwed to push the belt holding metal fitting 3 toward the connecting metal fitting 1 into a tightened state, and the base end portion 3r of the belt holding metal fitting 3 and the connecting metal fitting. 1
And are pressed together. As a result, the meshed timing belt 6 is held by the base end portion 3r, the bottom end portion 3s, the standing portion 3t, and the retaining end edge portion 3p of the above-mentioned description, and the coupling metal fitting 1 and the retaining end edge portion are held together. The separated gap G2 that has been changed from the widened state to the narrowed state is left between the portion 3p and the portion 3p. Therefore, according to the third aspect, the timing belt can be mounted with good operability by effectively using the connecting metal fitting 1 with one belt metal fitting 3 and using the mounting metal fitting A2 having a small number of parts.
The same purpose as in the case of can be achieved.

[0025]

Since the present invention is configured as described above, when the timing belt mounting method according to claim 1 is used, a mounting tool in which various members are assembled is prepared in advance. However, there is no problem in parts management, and there is a case where it is necessary to loosen the tightening nuts to some extent without the need to disassemble the assembled fittings and disassemble them as in the conventional method. Even if it does, it can be attached to the timing belt with much faster and less labor than the conventional example. Also, the installation is also
It is possible to load the first and second meshing wave type tooth parts by a simple work such as an interrupting operation between the first and second retaining edge parts, and then tighten the tightening nut. As a result, parts are less likely to be lost due to unintentional removal. Further, as a matter of course, even when it is necessary to remove the wearing tool from the timing belt, the purpose can be achieved by reversible work without loosening the fastening nut of the wearing tool only by loosening it.

The wearing tool of claim 2 is also the first and the second.
By properly setting the meshing wave type tooth portion to the width of the timing belt, the timing belt can be fully loaded without making the connecting screw rod particularly long, and therefore the connecting screw rod or the tightening nut can be pulled. It is possible to avoid hitting or contacting other members in the split type automatic door device or the like.

Next, in the case of the mounting method according to claim 3, by effectively utilizing the connecting metal fitting, only one belt holding metal fitting is required, and the operability thereof is further improved as compared with the case of claim 1. It is also possible to disassemble and assemble them easily. And claim 4
When the mounting tool according to the present invention is used, it is possible to provide it at low cost by reducing the number of members, and the mounting method according to claim 3 can be performed safely and quickly.

[Brief description of drawings]

FIG. 1 (A) is a timing belt mounting tool according to a second aspect of the present invention, and carries out the mounting method according to the first aspect;
The side view of the partial cutout showing the state immediately before the timing belt is inserted into the wearing tool, (B) is the side view of the partial cutout in the same way during the loading of the timing belt,
(C) is a partial perspective view showing a timing belt.

FIG. 2 is a partially cutaway side view showing a state in which a mounting tool is mounted on the timing belt by tightening a tightening nut after the timing belt shown in FIG. 1B is being inserted. .

FIG. 3 is a side view of a partially cutaway front fitting device showing another embodiment in a state immediately before loading of the timing belt shown in FIG. 1 (A).

FIG. 4 (A) is a timing belt mounting tool according to a fourth aspect of the present invention, and implements the mounting method according to the third aspect;
The side view of a part notch which showed the state just before a timing belt is mounted | worn with the said mounting | wearing tool, (B) shows the state which the mounting | wearing tool was mounted | worn to the said timing belt by fastening a fastening nut. It is a side view of a part notch.

FIG. 5 is a perspective explanatory view disclosed to show a state in which the timing belt wearing tool according to claim 2 is disassembled and is attached to the other door running metal fitting in the pull-type automatic door apparatus.

FIG. 6 is a schematic front view showing the upper side of a pull-type automatic door device to which a conventional timing belt wearing tool is attached.

FIG. 7 is an exploded perspective view in which a part of the conventional wearing tool is cut away.

FIG. 8 is a front view showing a procedure for assembling the timing belt wearing tool shown in FIG. 7, in which (A) shows a state in which the timing belt is fitted into the first belt holding metal fitting fitted into the connecting screw rod of the connecting metal fitting. , (B) is a front view showing a state in which the second belt holding metal fitting is further fitted into the connecting screw rod and fitted onto the timing belt, and (C) is a state in which a fastening nut is screwed and fastened to the connecting screw rod. FIG.

[Explanation of symbols]

1 Connecting bracket 1a Connection end 1b Attachment end 2 connection screw 2a protruding end 3 Belt clamps 3A 1st belt clamp 3B 2nd belt clamp 4 Tightening nut 6 Timing belt 6a strip 6b Wavy section A1 wearing tool A2 wearing equipment G1 isolated air gap G2 space

Claims (4)

(57) [Claims] 1. A connecting screw is projectingly provided in advance on a connecting end portion of a connecting metal fitting, and a first belt holding metal fitting and a second belt holding metal fitting are sequentially provided on the connecting threaded rod, respectively. There is prepared a mounting tool that is inserted into the first base end side insertion hole and the second base end side insertion hole in the end portion, and the fastening nut is screwed into the protruding end portion of the connecting screw rod, As a preceding step or a subsequent step of the step of attaching the attaching end portion of the connecting fitting of the wearing tool to a required location, the above-mentioned fastening nut is reversely screwed as necessary, so that the timing belt is provided with the first, The timing belt including a belt-like portion and a wave-like portion by being inserted from a separated gap that is a widened state between the first and second retaining end edges of the second belt holding metal member that are provided to face each other and project from each other. The wavy portion of the same as the first and second belt holding metal fittings The first and second belt holding metal fittings are connected to each other by engaging the first and second meshing wave type tooth portions in a straddle state in a meshed state and then screwing the fastening nut in the forward direction. The first and second base end portions of the first and second belt holding metal fittings and the first and second meshing wave types connected to the first and second base end portions are pushed by being pushed toward the metal fittings to be in a tightened state. A first belt in which the toothed portion is brought into pressure contact with the timing belt in the meshing state, the timing belt in the meshed state is continuously provided to the first and second base end portions, and the first and second meshing wave type tooth portions are projected. And a second bottom end portion, first and second standing portions that are continuously provided orthogonally to the second bottom end portion, and the first and second retaining edge portions that are bent from the first and second upright portions in an orthogonal manner. However, this makes it possible to leave a gap between the first and second retaining edge portions that has been changed from the widened state to the narrowed state. Method of mounting the timing belt to be. 2. A connecting metal fitting, a connecting screw rod projecting from a connecting end of the connecting metal fixture, a pair of first and second belt holding metal fittings, and a fastening member screwed to the connecting screw rod. The coupling metal fitting is formed of each member of the nut, and the coupling metal fitting is provided with a mounting hole for mounting the mounting end portion to a desired position with a screw or the like, and the first and second belt clamping metal fittings are , First and second base end side insertion holes are formed in the respective first and second base end parts, and first and second interlocking tooth portions are provided from the first and second base end parts. Protruding first and second bottom end portions, first and second upright portions that are bent orthogonally therefrom, and first and second retaining edge portions that are bent orthogonally from these. The first and second belt holding metal fittings described above are fitted into the connecting screw rod through the first and second proximal end side insertion holes, and the protruding end portion of the connecting screw rod is In the state where the fastening nut is screwed, the timing belt including the belt-shaped portion and the corrugated portion is inserted into the first and the second belt clamping metal fittings from the separated gap which is the widened state. (2) It is possible to fit and mount the first and second meshing wave type tooth portions of the two belt holding metal fittings in a straddle state, and the first and second base end portions by the forward screwing of the fastening nut. The first and the second bottom end portions and the first and the second standing portions and the The first and second retaining end edge portions make it possible to embrace the first and second retaining edge portions.
A wearing tool for a timing belt, characterized in that a separation space which has been changed from the widened state to the narrowed state is left between the retaining edge portions. 3. A connecting screw rod is projected from the connecting end portion of the connecting metal member in advance, and a belt holding metal member is inserted into the base end side insertion hole at the base end portion of the connecting screw rod, and A mounting tool is prepared in which a fastening nut is screwed to the protruding end of the connecting screw rod, and the front end or the subsequent step of the step of mounting the mounting end of the connecting bracket of the mounting tool to a required location. In the process, the timing belt is installed from the separated gap which is a widened state between the connecting end of the connecting fitting and the retaining end edge of the belt holding fitting by rotating the above-mentioned fastening nut reversely as necessary. By inserting the corrugated portion of the timing belt, which is composed of the belt-shaped portion and the corrugated portion, into the meshed wave-shaped tooth portion of the belt clamping metal fitting, and then screwing the tightening nut forward And hold the belt By pressing the metal fitting toward the connecting metal fitting to bring it into a tightened state, the base end portion of the belt holding metal fitting and the connecting metal fitting are brought into a pressure contact state, and the timing belt in the meshed state is moved to the base end. Bottom end portion which is continuously provided to the above-mentioned portion and in which the meshing wave type tooth portion is projected, a standing portion which is continuously provided in an orthogonal manner from the bottom end portion, and a retaining edge portion which is bent in an orthogonal manner from these. The timing belt is equipped with a timing belt, characterized in that a separation gap from the widened state to the narrowed state is left between the connection fitting and the retaining end edge portion. Method. 4. A connecting metal fitting, a connecting screw rod projecting from a connecting end of the connecting metal fastener, a belt holding metal member, and a fastening nut screwed to the connecting screw rod. An attachment hole for attaching the attachment end portion to a desired position with a screw or the like is formed in the connecting metal fitting, and the belt holding metal fitting has a base end side insertion hole at the base end portion. And a bottom end portion in which a meshing wave type tooth portion is projected from the base end portion, a standing portion that is bent orthogonally from the bottom end portion, and a bending portion that is bent orthogonally from the standing portion. The belt holding metal fitting described above is inserted into the connecting screw rod through the base end side insertion hole, and the fastening nut is screwed to the protruding end portion of the connecting screw rod. In the combined state, the timing belt consisting of the belt-shaped part and the wavy part is By inserting from the separated gap which is in a widened state between the retaining end edges of the holding metal fitting, it is not possible to mount it on the meshing wave type tooth portion of the belt holding metal fitting, and it is described above by the normal screwing of the fastening nut. The base end portion and the meshing wave type tooth portion connected to the base end portion are brought into pressure contact with the connecting end portion of the connecting metal fitting, and the timing belt in the meshing state is attached to the bottom end portion, the upright portion and the retaining end. It is configured such that it can be embraced by the edge portion, and a separation gap that has changed from the widened state to the narrowed state is left between the retaining end edge portion and the connecting end portion of the connecting fitting. Wearing tool for timing belt.