JP6157702B2 - Timing belt coupling tool and automatic door device - Google Patents

Description

  The present invention includes a timing belt coupling tool used for coupling the timing belt endlessly when the timing belt for opening and closing the automatic door is wound around the main driving pulley and the driven pulley, and the timing belt coupling tool. It relates to an automatic door device.

Conventionally, a technique as illustrated in FIG. 22 is known as a technique for opening and closing an automatic door.
In FIG. 22, the automatic door device 101 includes an automatic door device base 102 for attachment, a drive unit 103 attached to the automatic door device base 102, and a door 104 that opens and closes when driven by the drive unit 103. Has been.

  The drive unit 103 includes a motor 105 and a speed reducer 106 to which the driving force from the motor 105 is transmitted. A shaft 107 is incorporated in the speed reducer 106. A pulley 108 (main pulley) is assembled to the shaft 107. The pulley 108 is assembled in a rotatable state. An idler pulley 109 (driven pulley) is rotatably provided at a position away from the pulley 108. A timing belt 110 (toothed belt) is wound around the pulley 108 and the idler pulley 109. The timing belt 110 is connected endlessly by a timing belt connecting tool 111. A door 104 is attached to the timing belt 110 via a coupling tool 112 assembled to the timing belt coupling tool 111.

As the timing belt coupling tool as described above, for example, a technique disclosed in Patent Document 1 is known.
As shown in FIG. 23, a timing belt coupling tool 201 disclosed in Patent Document 1 includes a tool main body 203 for connecting and fixing a terminal of the timing belt 202, and a timing belt whose one end is rotatably attached to the tool main body 203. A rotation lever 204 for fixing the terminal 202 is provided.
The tool body 203 has a timing belt insertion / removal opening 204 formed at one end thereof, and a rotation lever accommodating chamber 205 formed therein. In the rotation lever storage chamber 205, a rotation lever locking portion 206 is formed in the vicinity of the timing belt insertion / removal opening 204.
The rotation lever 204 is mounted in the rotation lever storage chamber 205 by being freely movable in the axial direction of the tool body 203 and being attached so as to be able to enter and exit in the vertical direction from the rotation lever entrance 211. The rotation lever 204 has a timing belt abutting portion 207 provided so as to extend downward from the one end side, a retaining groove 208 formed to be engageable with the tooth portion 210 of the timing belt 202, and a rotation. An anchoring portion 209 that engages and disengages with respect to the lever engaging portion 206 is provided.

Here, a procedure for connecting and fixing the terminal of the timing belt 202 to the timing belt coupling tool 201 will be described.
First, as shown in FIG. 23A, the end of the timing belt 202 is inserted from the timing belt insertion / removal opening 204 of the tool body 203 in the direction indicated by the arrow W shown in FIG. Then, the terminal of the timing belt 202 is pressed against the timing belt abutting portion 207 of the rotation lever 204 and is rotated in the direction in which the rotation lever 204 is closed (indicated by the arrow X in FIG. 23A). . Accordingly, as shown in FIG. 23B, the retaining groove 208 of the rotation lever 204 is engaged with the tooth portion 210 of the timing belt 202.

Then, by pulling the timing belt 202 in the pull-out direction (the direction indicated by the arrow Y in FIG. 23B), the rotation pin 212 is illustrated in FIG. 23B along the guide long hole 213. As shown in FIG. 23C, the anchoring portion 209 of the turning lever 204 is engaged with the turning lever locking portion 206 of the tool body 203 as shown in FIG.
Finally, as shown in FIG. 23C, the rotation lever 204 is rotated by screwing a rotation stop screw 215 into a screw hole 214 formed on the lower surface of the tool body 203. Stop.
Thus, the operation of connecting and fixing the terminal of the timing belt 202 to the timing belt coupling tool 201 is completed.

Next, a procedure for removing the timing belt 202 from the timing belt coupling tool 201 will be described.
First, the rotation stopping screw 215 shown in FIG. 23C is removed from the screwing hole 214 of the tool main body 203.
Then, the timing belt 202 is pushed in the direction indicated by the arrow Z shown in FIG. Then, when the turning lever 204 is pushed in, the anchoring portion 209 is detached from the turning lever locking portion 206 of the tool main body 203 as shown in FIG. At this time, when the timing belt 202 is slightly pulled in the pulling direction (the direction indicated by the arrow Y in FIG. 23B), the rotating lever 204 as shown in FIG. 23A is opened. It becomes a state. Thereby, the timing belt 202 can be pulled out from the tool main body 203.
Thus, the operation of removing the timing belt 202 from the timing belt coupling tool 201 is completed.

JP 2001-173727 A

In the prior art, after winding the timing belt around the main pulley and the driven pulley, by changing the interval between the timing belt connecting tools by a bolt connecting between the two timing belt connecting tools and a nut screwed to the bolt, The timing belt tension is adjusted.
Here, when the tension of the timing belt is weak, that is, when the timing belt is bent, when the door hits the stopper, the timing belt is inserted into the tool body (in FIG. 23 (c), In the direction indicated by the arrow Z). Then, in FIG.23 (c), engagement with the anchoring part 209 of the rotation lever 204 and the latching part 206 for rotation levers of the instrument main body 203 will be cancelled | released. As a result, the timing belt coupling tool 201 sometimes opens the turning lever 204, and the connection and fixing state of the terminal of the timing belt 202 is released. In such a case, there is a problem that the timing belt 202 is detached from the timing belt coupling tool 201.

As a countermeasure against the above problem, as shown in FIG. 23C, the rotation lever 204 is prevented from rotating by screwing a rotation stop screw 215 into the screw hole 214 of the tool body 203. Things have been done.
However, when the timing belt coupling tool 201 is assembled to the coupling tool 112 (see FIG. 22), it is difficult to screw the rotation stop screw 215 from the lower side of the tool body 203. For this reason, the timing belt coupling tool 201 must be removed from the coupling tool 112 and the rotation stop screw 215 must be screwed together, and there is a problem that workability related to the connection and fixing of the terminal of the timing belt 202 is poor. .

  The present invention has been made in view of the above-described circumstances. The timing belt connection and fixing are released even when the timing belt is pushed in while improving the workability related to the connection and fixing of the terminal of the timing belt. It is an object of the present invention to provide a timing belt coupling tool that can prevent the occurrence of a collision, and an automatic door device including the timing belt coupling tool.

  In order to solve the above-mentioned problems, the timing belt coupling tool of the present invention according to claim 1 is for connecting and fixing a terminal of a timing belt for transferring a door of an automatic door, and inserting the terminal of the timing belt. A tool body that is removably inserted; a timing belt fixing lever that has one end side pivotably attached to the tool body, and the other end side is attached to form and fix the timing belt endlessly; and The tool body is attached to the tool body so as to be movable in a direction orthogonal to the axial direction of the tool body, and the timing belt fixing lever is restricted from moving in the insertion direction of the timing belt, thereby controlling the tool body from the tool body. And a timing belt fixing lever for preventing the timing belt from coming off. Therefore, when the timing belt is fixed, the timing belt removal preventing member restricts the movement of the timing belt fixing lever in the insertion direction of the timing belt, thereby preventing the timing belt from being detached from the tool body. Further, the timing belt fixing lever has one end side of the timing belt fixing lever facing from the position where the other end side of the timing belt fixing lever fixes the timing belt to a position where the timing belt is released. A first urging member that urges the timing belt to be rotated, and the timing belt removal preventing member is provided with a second urging member that urges the timing belt removal prevention member to push up, Force that the first biasing member biases the timing belt fixing lever , Wherein the second biasing member is set to be larger than the force that urges the timing belt removal prevention member.

In the present invention having such characteristics, when the timing belt is fixed by the timing belt fixing lever, the movement of the timing belt fixing lever in the insertion direction of the timing belt is restricted by the timing belt removal preventing member. As a result, the timing belt is not detached from the tool body.
Further, according to the present invention, one end side of the timing belt fixing lever is urged by the first urging member, and the other end side of the timing belt fixing lever rotates from a position where the timing belt is fixed to a position where the timing belt is released. Move. Further, the timing belt removal preventing member is urged and pushed up by the second urging member.

  According to a second aspect of the present invention, there is provided the timing belt coupling tool according to the first aspect, wherein the timing belt disconnection preventing member is movable in a direction perpendicular to the axial direction of the tool main body. An insertion shaft that is inserted into the tool body, and a movement regulating portion that is formed integrally with the insertion shaft and has a shape that can regulate the movement of the timing belt fixing lever in the insertion direction of the timing belt; When the timing belt fixing lever fixes the timing belt, the insertion shaft moves in a direction perpendicular to the axial direction of the tool body, and the movement restricting portion is substantially the same as one end of the timing belt fixing lever. It is characterized by being arranged at the same height position.

  In the present invention having such a feature, when the timing belt fixing lever is in a state where the timing belt is fixed, the insertion shaft moves in a direction orthogonal to the axial direction of the tool body, and the movement restricting portion is one end of the timing belt fixing lever. Are arranged at substantially the same height.

  According to a third aspect of the present invention, there is provided an automatic door device including the timing belt coupling tool according to the first or second aspect.

  In the present invention having such characteristics, the automatic door device includes the timing belt coupling tool according to claim 1 or 2.

According to the first aspect of the present invention, when the timing belt is fixed by the timing belt fixing lever, the movement of the timing belt fixing lever in the insertion direction of the timing belt is restricted by the timing belt removal preventing member. . Thereby, it is possible to prevent the timing belt fixing lever from rotating from the position where the timing belt is fixed to the position where the fixing of the timing belt is released without using the rotation stopping screw as in the prior art. . Therefore, it is possible to omit the attachment of the rotation stopping screw in the work of fixing and fixing the timing belt terminal. Further, even when the timing belt is pushed in the direction of insertion into the tool body when the door hits the stopper, the movement of the timing belt fixing lever in the direction of insertion of the timing belt is restricted by the timing belt removal preventing member. Thereby, the timing belt fixed state by the timing belt fixing lever can be prevented from being released. From this, it is possible to prevent the timing belt from being detached from the tool body. Therefore, there is an effect that it is possible to prevent the connection and fixing of the timing belt from being released even when the timing belt is pushed in while improving the workability related to the connection and fixing of the terminal of the timing belt.
In addition, according to the present invention, since the timing belt removal preventing member is urged by the second urging member, the movement restricting portion can be disposed at substantially the same height as one end of the timing belt fixing lever. Thereby, the movement of the timing belt fixing lever in the insertion direction of the timing belt can be more reliably prevented. Further, when releasing the connection fixing of the timing belt terminal, the movement restriction of the timing belt fixing lever by the movement restricting portion can be released by pushing down the timing belt removal preventing member. Further, since one end of the timing belt fixing lever is urged by the first urging member, the timing belt fixing lever is engaged with the tool body after the movement restriction of the timing belt fixing lever by the movement restricting portion is released. When the timing belt is released, the other end of the timing belt fixing lever rotates from the position where the timing belt is fixed toward the position where the timing belt is released. Therefore, it is possible to more reliably prevent the timing belt from being connected and fixed, even when the timing belt is pushed in, while further improving the workability related to the connection and fixing of the timing belt. There is an effect.

  According to the second aspect of the present invention, even when the timing belt is pushed in the direction of insertion into the tool body when the door hits the stopper, one end of the timing belt fixing lever comes into contact with the movement restricting portion. Then, the movement of the timing belt fixing lever in the insertion direction of the timing belt can be restricted. Accordingly, the timing belt is not released from being fixed by the timing belt fixing lever, and the timing belt can be reliably prevented from being detached from the tool body. Therefore, even when the timing belt is pushed in the insertion direction, it is possible to reliably prevent the connection and fixing of the timing belt from being released.

  According to the third aspect of the present invention, the automatic door device has the same effect as the timing belt coupling tool according to the first or second aspect.

It is a block diagram of the automatic door apparatus of this invention. It is a perspective view of the timing belt connection tool of this invention, a suspension metal fitting, and an attachment metal fitting. It is a disassembled perspective view of Example 1 of a timing belt coupling tool. It is one perspective view of the half body which comprises a tool main body, and a side view. It is a perspective view of a timing belt fixing lever. It is a perspective view of a timing belt omission prevention member and a 2nd energizing member. It is a perspective view of a timing belt coupling tool. It is explanatory drawing of the operation | work procedure which connects and fixes the terminal of a timing belt to a timing belt coupling tool, Comprising: It is a figure which shows the state before fixing a timing belt fixing lever to the terminal of a timing belt. It is a figure which shows the state before attaching a timing belt fixing lever to the tool main body in the state which attached the timing belt fixing lever to the terminal of a timing belt. It is a figure which shows the state which engaged the timing belt fixing lever with the tool main body. It is a figure explaining the effect | action of this invention when a timing belt is pushed in the insertion direction to a tool main body. It is explanatory drawing of the operation | work procedure which cancels | releases connection fixation of the terminal of a timing belt, and a timing belt coupling tool, Comprising: It is a figure which shows the state which pushed down the timing belt removal prevention member. It is a figure which shows the state which released the engagement with a timing belt fixing lever and a tool main body. It is a disassembled perspective view of Example 2 of a timing belt coupling tool. FIG. 6 is a plan view, a front view, and a side view of a first biasing member in Embodiment 2. It is explanatory drawing of the operation | work procedure which connects and fixes the terminal of a timing belt to a timing belt coupling tool, Comprising: It is a figure which shows the state before fixing a timing belt fixing lever to the terminal of a timing belt. It is a figure which shows the state before attaching a timing belt fixing lever to the tool main body in the state which attached the timing belt fixing lever to the terminal of a timing belt. It is a figure which shows the state which engaged the timing belt fixing lever with the tool main body. It is a figure explaining the effect | action of this invention when a timing belt is pushed in the insertion direction to a tool main body. It is explanatory drawing of the operation | work procedure which cancels | releases connection fixation of the terminal of a timing belt, and a timing belt coupling tool, Comprising: It is a figure which shows the state which pushed down the timing belt removal prevention member. It is a figure which shows the state which released the engagement with a timing belt fixing lever and a tool main body. It is a block diagram of the conventional automatic door apparatus. It is a figure which shows the conventional timing belt connection tool.

  Hereinafter, the timing belt connecting tool and the automatic door device according to the first embodiment of the present invention with reference to FIGS. 1 to 13, and the timing belt according to the present invention with reference to FIGS. 14 to 21. Example 2 of a connection tool and an automatic door apparatus are each demonstrated.

Hereinafter, the first embodiment will be described with reference to FIGS.
FIG. 1 is a configuration diagram of an automatic door device according to the present invention, FIG. 2 is a perspective view of a timing belt coupling tool, a hanging bracket, and a mounting bracket according to the present invention, and FIG. 4 and 4 are diagrams showing one of the halved bodies constituting the tool body in FIG. 3, wherein (a) is a perspective view of the halved body, (b) is a side view of the halved body, and FIG. FIG. 6 is a perspective view of a timing belt removal preventing member and a second urging member, FIG. 7 is a perspective view of a timing belt coupling tool, and FIG. 8 is a timing belt coupling of a timing belt terminal. FIG. 9 is an explanatory diagram of a work procedure for connecting and fixing to a tool, and shows a state before the timing belt fixing lever is fixed to the end of the timing belt; FIG. 9 is a timing belt fixing lever at the end of the timing belt; FIG. 10 is a diagram showing a state where the timing belt fixing lever is engaged with the tool body, FIG. 10 is a diagram showing a state where the timing belt fixing lever is engaged with the tool body, and FIG. FIG. 12 is a diagram for explaining the operation of the present invention when pushed in the direction of insertion into the tool body. FIG. 12 is a diagram for explaining the work procedure for releasing the connection and fixing between the timing belt terminal and the timing belt coupling tool. FIG. 13 is a diagram illustrating a state in which the belt slip-off preventing member is pushed down, and FIG. 13 is a diagram illustrating a state in which the engagement between the timing belt fixing lever and the tool body is released.
In addition, the arrow in a figure has shown each direction of front and back, up and down, and right and left (each direction of an arrow shall be an example).

In FIG. 1, reference numeral 1 indicates an automatic door device including a timing belt coupling tool according to the present invention.
As shown in FIG. 1, the automatic door device 1 includes an automatic door device base 2 for attachment, a drive unit 3 attached to the automatic door device base 2, and a door 4 that opens and closes by driving the drive unit 3. It is configured with.

As illustrated in FIG. 1, the drive unit 3 includes a motor 5 and a speed reducer 6 to which the driving force from the motor 5 is transmitted. A shaft 7 is incorporated in the speed reducer 6. A pulley 8 (main driving pulley) is assembled to the shaft 7. The pulley 8 is assembled in a rotatable state. An idler pulley 9 (driven pulley) is rotatably provided at a position away from the pulley 8. A timing belt 10 (toothed belt) is wound around the pulley 8 and the idler pulley 9.
As shown in FIG. 1, the timing belt 10 is connected endlessly by a timing belt connecting tool 11 according to the present invention. A door 4 is attached to the timing belt 10 via an attachment fitting 12 assembled to the timing belt connecting tool 11 and a suspension fitting 13 to which the attachment fitting 12 is attached.

The mounting bracket 12 is formed in a shape as shown in FIG. 2 and is provided with a timing belt coupling tool assembling groove 14.
As shown in FIGS. 1 and 2, the hanging bracket 13 is formed to be able to roll on a hanging bracket main body 15 fixed to the upper portion of the door 4 and an upper rail (not shown) of the automatic door device 1. The hanger roller 16 is provided. The mounting bracket 12 is fixed to the hanging bracket main body 15 by fastening bolts 17 and nuts (not shown).

The automatic door device 1 according to this embodiment is characterized in that a timing belt connecting tool 11 is provided with respect to the conventional automatic door device 101 (see FIG. 22).
Hereinafter, the timing belt coupling tool 11 will be described in detail.

In the present embodiment, a pair of timing belt coupling tools 11 according to the present invention is provided as shown in FIG. The interval between the timing belt coupling tools 11 can be changed by a bolt 18 and a nut 19. Thus, the tension of the timing belt 10 can be adjusted by rotating the nut 19 in FIG.
Each of the pair of timing belt connecting tools 11 has the same configuration and structure.
Therefore, hereinafter, one of the pair of timing belt coupling tools 11 will be described.

As shown in FIG. 3, the timing belt coupling tool 11 includes a tool body 20, a timing belt fixing lever 21, a first biasing member 22, a timing belt removal preventing member 23, and a second biasing member 24. A plurality of screws 26 and a plurality of nuts 27 are provided.
Hereinafter, each structure of the timing belt coupling tool 11 will be described.

First, the tool body 20 will be described.
As shown in FIGS. 2 and 7, the tool main body 20 is configured with a pair of halved main bodies 28 in abutted state.
Each halved body 28 is formed in a symmetrical shape, and all have the same configuration and structure.
Therefore, hereinafter, one of the pair of halved main bodies 28 will be described.

As shown in FIGS. 3 and 4, the half body 28 is formed in a long rectangular shape and includes an upper wall 29, a bottom wall 30, a front wall 31, a rear wall 32, and a side wall 33. In addition, a timing belt terminal portion accommodating chamber 34, a timing belt removal preventing member accommodating chamber 35, and a bolt accommodating chamber 36 are further provided therein.
As shown in FIGS. 3 and 4, the upper wall 29 is formed with a lever entrance 37 and a first fitting insertion hole 38.

  The lever entrance 37 is formed as a part that enters and exits the tool body 20 while a timing belt fixing lever 21 described later rotates. The lever inlet / outlet port 37 is notched from one end side in the axial direction of the half body 28 (the front end side in the front-rear direction in FIGS. 3 and 4) to the middle portion. As shown in FIG. 7, the lever entrance 37 is formed in a shape that allows the timing belt fixing lever 21 to turn in and out of the tool main body 20 when the pair of half-split main bodies 28 are brought into contact with each other. Yes.

  The first fitting insertion hole 38 is formed as a portion through which a first fitting insertion shaft 54 of a timing belt removal preventing member 23 described later is inserted. The first insertion hole 38 is provided at an intermediate portion in the axial direction of the half body 28 (the front-rear direction in FIGS. 3 and 4). As shown in FIGS. 3 and 4, the first fitting insertion hole 38 is formed by cutting out the right edge portion of the upper wall 29 into a substantially U shape. The first insertion holes 38 are configured such that when the pair of halved main bodies 28 are brought into a butted state, the first insertion holes 38 of the respective halved main bodies 28 communicate with each other and have a circular shape in plan view. .

As shown in FIGS. 3 and 4, the bottom wall 30 extends from one end side in the axial direction of the half body 28 (the front end side in the front-rear direction in FIGS. 3 and 4) to the other end side (FIGS. 3 and 4). 4 is provided so as to extend to the rear end side in the front-rear direction.
The bottom wall 30 is provided with a timing belt mounting surface 39 and a second fitting insertion hole 40.
When the terminal portion of the timing belt 10 (see FIG. 2) is inserted into the tool main body 20 and accommodated in a timing belt terminal portion accommodating chamber 34 to be described later, the timing belt placement surface 39 It is formed as a portion to be placed with the lower surface 10a side down. As shown in FIG. 4, the timing belt placement surface 39 is formed in a planar shape inside one end side in the axial direction of the bottom wall 30 (the front end side in the front-rear direction in FIGS. 3 and 4). .

  The 2nd insertion hole 40 is formed as a part which the 2nd insertion shaft 56 (refer FIG.3 and FIG.6) of the timing belt drop prevention member 23 mentioned later penetrates. As shown in FIGS. 3 and 4, the second insertion hole 40 is provided in an intermediate portion in the axial direction of the bottom wall 30 (the front-rear direction in FIGS. 3 and 4). As shown in FIG. 4A, the second fitting hole 40 is formed by cutting out the right edge of the bottom wall 30 into a substantially U shape. The second fitting insertion holes 40 are configured such that when the pair of half-split main bodies 28 are brought into a butted state, the second fitting insertion holes 40 of the respective half-split main bodies 28 communicate with each other and have a circular shape in plan view. Yes.

As shown in FIGS. 3 and 4, the front wall 31 is continuously provided on one end side in the axial direction of the side wall 33 (the front end side in the front-rear direction in FIGS. 3 and 4). 41 and a timing belt fixing lever engaging portion 42 are formed.
The timing belt insertion / removal port 41 is provided as a part for inserting / removing the terminal portion of the timing belt 10 (see FIG. 2) into the timing belt terminal portion accommodating chamber 34. As shown in FIG. 4, the timing belt insertion / removal port 41 is formed so as to penetrate the lower side of the front wall 31 and communicate with the timing belt terminal portion accommodation chamber 34.

  The timing belt fixing lever engaging portion 42 is provided as a portion for engaging the timing belt fixing lever 21 (see FIG. 3) and holding the state where the end portion of the timing belt 10 is fixed. The timing belt fixing lever engaging portion 42 is formed in a concave shape inside the front wall 31 as shown in FIGS. 3 and 4.

  As shown in FIGS. 3 and 4, the rear wall 32 has the other end side in the axial direction of the top wall 29, the bottom wall 30, and the side wall 33 (in FIGS. Bolt insertion holes 43 are formed continuously on the end side. The bolt insertion hole 43 is formed so as to communicate with the bolt housing chamber 36.

As shown in FIGS. 3 and 4, the side wall 33 is erected upward from the left end side in the left-right direction of the bottom wall 30. As shown in FIGS. 3 and 4, a guide long hole 44 is formed on the inner surface of the side wall 33.
As illustrated in FIG. 3, the guide long hole 44 is formed as a portion that engages a rotation shaft 45 described later of the timing belt fixing lever 21. The guide long hole 44 is formed in such a shape that the timing belt fixing lever 21 can be rotated and can be attached so as to be movable in the axial direction of the tool body 20 (the front-rear direction in FIGS. 3 and 4). Has been. The guide long hole 44 is a groove formed in an oval shape, and is formed in the middle part of the side wall 33 so as to extend linearly along the axial direction of the side wall 33 (the front-rear direction in FIGS. 3 and 4). Has been.

  As shown in FIGS. 3 and 4, a plurality of screw holes 25 are formed through the outer surface of the side wall. Each of the plurality of screw holes 25 is formed so that the screw 26 illustrated in FIG. 3 can be inserted therethrough.

  The timing belt terminal part accommodation chamber 34 is formed as a part for accommodating the terminal part of the timing belt 10 (see FIG. 2) inserted from the timing belt insertion / removal port 41 shown in FIG. As shown in FIGS. 3 and 4, the timing belt terminal portion accommodating chamber 34 is formed on one end side in the axial direction of the half body 28 (the front end side in the front-rear direction in FIGS. 3 and 4). When the half-split main bodies 28 are brought into the butted state, the timing belt terminal housing chambers 37 of the respective half-split main bodies 28 communicate with each other to form one housing chamber.

  As shown in FIG. 3, the timing belt slip-off preventing member accommodating chamber 35 is formed as a portion for accommodating the timing belt slip-off preventing member 23. As shown in FIGS. 3 and 4, the timing belt slip-off preventing member accommodating chamber 35 is formed at an intermediate portion in the axial direction (the front-rear direction in FIGS. 3 and 4) of the half body 28, and the timing belt terminal portion. It is formed so as to communicate with the storage chamber 34. The timing belt removal preventing member accommodating chamber 35 forms a single accommodation chamber through communication between the timing belt removal preventing member accommodating chambers 35 of the respective half-halved main bodies 28 when the pair of half-divided main bodies 28 are brought into contact with each other. It is the composition which does.

  The bolt housing chamber 36 is formed as a portion for housing the bolt 18 (see FIG. 2). As shown in FIG. 4, the bolt housing chamber 36 is formed on the other end side in the axial direction of the half body 28 (in FIG. 3 and FIG. 4, the rear end side in the front-rear direction). It is formed so as to communicate with the storage chamber 35. The bolt housing chambers 36 are configured such that when the pair of half main bodies 28 are brought into abutted state, the bolt housing chambers 36 of the respective half main bodies 28 communicate with each other to form one housing chamber. . A nut mounting portion 50 for mounting the nut 19 shown in FIG. 2 is formed in the bolt housing chamber 36.

Next, the timing belt fixing lever 21 will be described.
As shown in FIGS. 3 and 5, the timing belt fixing lever 21 includes a pair of rotating shafts 45, a timing belt contact portion 46, a movement restricting protrusion 47, a retaining groove 48, and an engaging protrusion 49. And is configured.
As shown in FIG. 5, the pair of pivot shafts 45 are formed on one end side in the axial direction of the timing belt fixing lever 21 (the rear end side in the front-rear direction in FIG. 5). It is provided to protrude.

  The timing belt contact portion 46 is provided as a portion where the end of the end portion of the timing belt 10 (see FIG. 2) contacts. Further, the timing belt contact portion 46 is provided as a portion that receives a biasing force from a first biasing member 22 described later. As shown in FIG. 5, the timing belt contact portion 46 is formed to extend downward from one end side in the axial direction of the timing belt fixing lever 21 (the rear end side in the front-rear direction in FIG. 5). .

  The movement restricting protrusion 47 is provided as a portion for restricting the movement of the timing belt fixing lever 21 in the insertion direction of the timing belt 10 (see FIG. 2). As shown in FIG. 5, the movement restricting protrusion 47 is formed in a convex shape on one end side in the axial direction of the timing belt fixing lever 21 (in FIG. 5, the rear end side in the front-rear direction).

  The retaining groove 48 is provided as a portion for engaging the tooth portion 10b of the timing belt 10 (see FIG. 2) to prevent the timing belt 10 from coming off. As shown in FIG. 5, a plurality of strips (in this embodiment, three strips) are provided on the lower surface of the timing belt fixing lever 21. Each retaining groove 48 has a substantially U-shape extending in the left-right direction in FIG. 5, and is formed in a shape that can be fitted with the tooth portion 10b of the timing belt 10 shown in FIG.

  As shown in FIG. 5, the engaging protrusion 49 protrudes from the other end side in the axial direction of the timing belt fixing lever 21 (in FIG. 5, the front end side in the front-rear direction), and is shown in FIGS. The timing belt fixing lever engaging portion 42 is formed in a shape that can be engaged.

Next, the first urging member 22 will be described.
The first urging member 22 urges the timing belt fixing lever 21 and fixes the timing belt 10 from the position where the other end side of the timing belt fixing lever 21 is fixed to the terminal portion of the timing belt 10 (see FIG. 2). It is provided as a member to be rotated toward the position to release. The first urging member 22 has a force (spring force) that urges the timing belt fixing lever 21 more than a force (spring force) that the second urging member 24 described later urges the timing belt removal preventing member 23. It is set to be large.
The first urging member 22 is not particularly limited, but is formed in a shape as illustrated in FIG. 3, and includes a ring portion 51, a first leg portion 52, and a second leg portion 53. Is a spring. The first urging member 22 is not limited to a spring as illustrated in FIG. 3, and may be a member having other elasticity (as another specific example, the second embodiment is used. reference).

Next, the timing belt removal preventing member 23 will be described.
As shown in FIG. 6, the timing belt removal preventing member 23 is formed in a shaft shape, and includes a first fitting insertion shaft 54, a movement restricting portion 55, and a second fitting insertion shaft 56. .
The first insertion shaft 54 corresponds to the “insertion shaft” in the claims.
As shown in FIG. 6, the first insertion shaft 54 is formed in a cylindrical shape on one end side in the axial direction of the timing belt removal preventing member 23 (upward in the vertical direction in FIG. 6). The first insertion shaft 54 is formed so that it can be inserted into a first insertion hole 38 formed in the upper wall 29 of the tool body 20 shown in FIG. The first insertion shaft 54 is formed so as to be movable in a direction (vertical direction in FIG. 3) perpendicular to the axial direction of the tool body 20 when the first insertion shaft 54 is inserted into the first insertion insertion hole 38. Yes.

  The movement restricting portion 55 is provided as a portion for restricting the movement of the timing belt fixing lever in the timing belt insertion direction. In this embodiment, as shown in FIG. 6, the movement restricting portion 55 is provided continuously with the lower end of the first fitting insertion shaft 54 and is formed in a columnar shape. The movement restricting portion 55 is provided so as to be disposed at substantially the same height as the movement restricting protrusion 47 of the timing belt fixing lever 21 illustrated in FIG. 5 in a state where the timing belt fixing lever 21 fixes the timing belt 10. ing.

The second insertion shaft 56 corresponds to the “insertion shaft” in the claims.
As shown in FIG. 6, the second insertion shaft 56 is provided continuously with the lower end of the movement restricting portion 55 and is formed in a columnar shape. The 2nd insertion shaft 56 is formed so that it can insert in the 2nd insertion hole 40 formed in the bottom wall 30 of the tool main body 20 shown in FIG. The second insertion shaft 56 is formed so as to be movable in a direction (vertical direction in FIG. 3) perpendicular to the axial direction of the tool body 20 when the second insertion shaft 56 is inserted into the second insertion hole 40. Yes. The 2nd insertion shaft 56 is formed as a part which inserts the 2nd biasing member 24 mentioned later.

Next, the second urging member 24 will be described.
The second urging member 24 is provided as a member that urges the movement restricting portion 55 of the timing belt removal preventing member 23 to be pushed up. The second urging member 24 has a force (spring force) that urges the timing belt slip-off preventing member 23 smaller than a force (spring force) that the first urging member 22 urges the timing belt fixing lever 21. Is set to
In the present embodiment, the second urging member 24 is not particularly limited, but is assumed to be a coil spring formed in a shape as illustrated in FIGS. 3 and 6. The second urging member 24 is not limited to the coil spring as illustrated in FIGS. 3 and 6 and may be another elastic member.

Next, the procedure for assembling the timing belt coupling tool 11 will be described.
First, in FIG. 3, the ring portion 51 of the first urging member 22 is inserted into the rotation shaft 45 of one of the timing belt fixing levers 21 (right side in the left-right direction in FIG. 3), and the second leg portion 53 is inserted. It is mounted on the upper surface of the timing belt contact portion 46 of the timing belt fixing lever 21 (see FIG. 8).
Further, the second urging member 24 illustrated in FIG. 3 is inserted through the second fitting insertion shaft 56 of the timing belt removal preventing member 23.

Thereafter, the rotation shaft 45 of the timing belt fixing lever 21 shown in FIG. 3 is attached to the guide long hole 44 of the half body 28. 3 is inserted into the first insertion insertion hole 38 of the tool body 20, and the second insertion insertion shaft 56 of the timing belt removal prevention member 23 is inserted. The tool body 20 is inserted into the second insertion hole 40. As a result, the movement restricting portion 55 of the timing belt removal preventing member 23 is accommodated in the timing belt removal preventing member accommodating portion 35 (see FIG. 8). Further, the nut 19 illustrated in FIG. 2 is mounted on the nut mounting portion 48 illustrated in FIGS. 3 and 4.
Finally, as shown in FIG. 7, the pair of halved main bodies 28 are brought into contact with each other, and the screw 26 is inserted into the screw hole 25. Then, the screw 26 and the nut 27 are screwed together. Thereby, the said butt | matching state is fixed.
Thus, the assembly work of the timing belt coupling tool 11 is completed.

Next, an operation procedure for connecting and fixing the terminal portion of the timing belt 10 to the timing belt coupling tool 11 and operations of the respective portions will be described.
First, as shown in FIG. 8, the first insertion shaft 54 of the timing belt removal preventing member 23 is pushed down in the direction indicated by the arrow A shown in FIG. Move to the lower side of the chamber 35.
Then, one end side (timing belt contact portion 46) of the timing belt fixing lever 21 is urged by the first urging member 22 in the timing belt fixing lever 21, and the other end side of the timing belt fixing lever 21 (FIG. 8). In FIG. 8, the front end side in the front-rear direction rotates from the position where the timing belt 10 is fixed toward the position where the timing belt 10 is released (in the direction opposite to the direction indicated by the arrow C in FIG. 8). Move.
Further, the end portion of the timing belt 10 is inserted through the timing belt insertion / removal port 41 from the direction indicated by the arrow B shown in FIG. Then, the tip of the timing belt 10 is brought into contact with the timing belt contact portion 46.

Then, the timing belt fixing lever 21 is pushed down from above and rotated in the direction indicated by the arrow C shown in FIG. Then, the other end side of the timing belt fixing lever 21 passes through the lever entrance 37 as shown in FIG. 9, reaches a position for fixing the terminal portion of the timing belt 10, and ends the rotation. At this time, the retaining groove 48 of the timing belt fixing lever 21 is fitted into the tooth portion 10 b of the timing belt 10.
Thereafter, the depression of the first insertion shaft 54 of the timing belt slip-off preventing member 23 is released. Then, the movement restricting portion 55 is urged by the second urging member 24 in the direction indicated by the arrow D shown in FIG. As a result, the movement restricting portion 55 moves in the direction indicated by the arrow D.

9, the timing belt 10 is pulled in the pulling direction (the direction indicated by the arrow E illustrated in FIG. 9), so that the rotation shaft 45 of the timing belt fixing lever 21 is illustrated along the guide long hole 44. 9 is moved in the direction indicated by the arrow E shown in FIG.
Then, as shown in FIG. 10, the engaging protrusion 49 of the timing belt fixing lever 21 engages with the timing belt fixing lever engaging portion 42 of the tool body 20.
Thus, the operation for connecting and fixing the terminal portion of the timing belt 10 to the timing belt coupling tool 11 is completed.

Here, the operation of the present invention when a force is applied to the timing belt 10 to push it in the insertion direction when the timing belt 10 is inserted into the tool body 20 will be described.
When the door 4 of the automatic door device 1 as shown in FIG. 1 hits the stopper, the timing belt 10 is inserted when the timing belt 10 is inserted into the tool body 20 as shown in FIG. A force to push in the direction (the direction indicated by the arrow F in FIG. 11) acts.

  In such a case, if the timing belt coupling tool 201 of the prior art shown in FIG. 23 is used, the timing belt 202 is inserted into the tool body 203 (in FIG. 23C, the direction indicated by the arrow Z). The engagement between the anchoring portion 209 of the rotation lever 204 and the rotation lever locking portion 206 of the tool main body 203 is released. As a result, the timing belt coupling tool 201 opens the rotation lever 204, and the connection fixing state of the terminal of the timing belt 202 is released. Then, the timing belt 202 is detached from the timing belt coupling tool 201.

On the other hand, in the timing belt coupling tool 11 of the present embodiment, as shown in FIG. 11, the movement restriction portion 55 of the timing belt removal preventing member 23 is substantially the same height as the movement restriction protrusion 47 of the timing belt fixing lever 21. In the state of being arranged at the position, the force that tries to push the timing belt 10 in the insertion direction (the direction indicated by the arrow F in FIG. 11) when the timing belt 10 is inserted into the tool body 20. Even if the operation is performed, the movement restricting projection 47 of the timing belt fixing lever 21 contacts the movement restricting portion 55 of the timing belt removal preventing member 23. Thereby, the movement of the timing belt fixing lever 21 in the direction indicated by the arrow F shown in FIG. 11 is restricted. For this reason, the engagement between the engagement protrusion 49 of the timing belt fixing lever 21 and the timing belt fixing lever engaging portion 42 of the tool body 20 is not released.
Therefore, the timing belt 10 is not detached from the tool body 20.

Finally, the procedure of the operation for releasing the connection and fixing between the terminal portion of the timing belt 10 and the timing belt coupling tool 11 and the operation of each portion will be described.
First, as shown in FIG. 12, the first fitting insertion shaft 54 of the timing belt removal preventing member 23 is pushed down in the direction indicated by the arrow G shown in FIG. Then, the movement restricting portion 55 of the timing belt removal preventing member 23 moves to a height position that is lower than the height position of the movement restricting protrusion 47 of the timing belt fixing lever 21 as shown in FIG.

  Then, as shown in FIG. 12, the timing belt 10 is pushed in the insertion direction into the tool body 20 (in the direction indicated by the arrow H in FIG. 12), and the rotation shaft 45 of the timing belt fixing lever 21 is guided. It is moved along the long hole 44 in the direction indicated by the arrow H shown in FIG.

Then, as shown in FIG. 13, the engagement between the engaging protrusion 49 of the timing belt fixing lever 21 and the timing belt fixing lever engaging portion 42 of the tool body 20 is released. Then, by the urging of the first urging member 22, the other end side of the timing belt fixing lever 21 moves from the position where the timing belt 10 is fixed to the position where the fixing of the timing belt 10 is released (in FIG. 13, the arrow J Rotate in the direction indicated by
Thus, the operation of releasing the connection and fixing between the terminal portion of the timing belt 10 and the timing belt coupling tool 11 is completed.

As described above with reference to FIGS. 1 to 13, according to the timing belt coupling tool of the present invention, when the timing belt 10 is fixed by the timing belt fixing lever 21, the timing belt removal preventing member 23. Therefore, the movement of the timing belt fixing lever 21 in the insertion direction of the timing belt 10 is restricted. Thus, the timing belt fixing lever 21 is prevented from rotating from the position where the timing belt 10 is fixed to the position where the timing belt 10 is released without using the rotation stopping screw as in the prior art. be able to. Therefore, it is possible to omit the attachment of the rotation stop screw in the work of fixing and fixing the terminal of the timing belt 10. Further, even when the timing belt 10 is pushed in the insertion direction into the tool body 20 when the door 4 hits the stopper, the timing belt fixing lever 21 moves in the insertion direction of the timing belt 10 by the timing belt removal preventing member 23. Is regulated. Thereby, it is possible to prevent the timing belt 10 from being released from being fixed by the timing belt fixing lever 21. From this, it is possible to prevent the timing belt 10 from being detached from the tool body 20.
Therefore, it is possible to prevent the connection and fixation of the timing belt 10 from being released even when the timing belt 10 is pushed in while improving the workability related to the connection and fixation of the terminal of the timing belt 10. Play.

Further, according to the timing belt coupling tool of the present invention, even if the timing belt 10 is pushed in the direction of insertion into the tool body 20 when the door 4 hits the stopper, one end of the timing belt fixing lever 21 remains at the movement restricting portion. 55 abuts. Then, the movement of the timing belt fixing lever 21 in the insertion direction of the timing belt 10 can be restricted. Accordingly, the timing belt 10 is not released from being fixed by the timing belt fixing lever 21, and the timing belt 10 can be reliably prevented from being detached from the tool body 20.
Therefore, even when the timing belt 10 is pushed in the insertion direction, it is possible to reliably prevent the connection and fixing of the timing belt 10 from being released.

Further, according to the timing belt coupling tool of the present invention, the timing belt removal preventing member 23 is urged by the second urging member 24, so that the movement restricting portion 55 is substantially the same height as one end of the timing belt fixing lever 21. Can be placed in position. Thereby, the movement of the timing belt fixing lever 21 in the insertion direction of the timing belt 10 can be more reliably prevented. Further, when releasing the connection fixing of the terminal of the timing belt 10, the movement restriction of the timing belt fixing lever 21 by the movement restriction portion 55 can be released by pushing down the timing belt removal preventing member 23. Furthermore, since one end side of the timing belt fixing lever 21 is urged by the first urging member 22, after the movement restriction of the timing belt fixing lever 21 by the movement restricting portion 55 is released, the timing belt fixing lever 21 and the tool main body are released. When the engagement with the timing belt 10 is released, the other end side of the timing belt fixing lever 21 rotates from a position where the timing belt 10 is fixed to a position where the timing belt 10 is released.
Therefore, while further improving the workability related to the connection and fixing of the terminal of the timing belt 10, it is possible to prevent the connection and fixing of the timing belt 10 from being released more reliably even when the timing belt 10 is pushed in. There is an effect that can be.

  Furthermore, the automatic door device including the timing belt coupling tool of the present invention has the same effects as the timing belt coupling tool 11 having the above-described configuration.

In addition to the first embodiment, the timing belt coupling tool and the automatic door device according to the present invention may use the following second embodiment.
Hereinafter, Example 2 will be described with reference to FIGS.
14 is an exploded perspective view of the timing belt coupling tool according to the second embodiment, FIG. 15 is a plan view, a front view, and a side view of the first biasing member according to the second embodiment, and FIG. FIG. 17 is an explanatory diagram of a work procedure for connecting and fixing to a belt coupling tool, showing a state before the timing belt fixing lever is fixed to the end of the timing belt, and FIG. 17 is a timing belt fixing lever attached to the end of the timing belt FIG. 18 is a view showing a state before the timing belt fixing lever is engaged with the tool main body, FIG. 18 is a view showing a state where the timing belt fixing lever is engaged with the tool main body, and FIG. FIG. 20 is a diagram for explaining the operation of the present invention when pushed in the insertion direction, and FIG. 20 shows the contact between the timing belt end and the timing belt coupling tool. An explanatory view of a working procedure for releasing the fixing, a diagram showing a state in which depressed the timing belt removal prevention member, FIG. 21 is a diagram showing a state in which release the engagement between the timing belt locking lever and tool body.
14-21, the same code | symbol is attached | subjected to the same component as Example 1, and detailed description is abbreviate | omitted.
In addition, the arrow in a figure has shown each direction of front and back, up and down, and right and left (each direction of an arrow shall be an example).

In FIG. 14, reference numeral 61 indicates a second embodiment of the timing belt coupling tool of the present invention.
The timing belt coupling tool 61 in the present embodiment has the same configuration and structure as those of the first embodiment except for the configuration and structure of the first urging member 62 shown in FIG.
Therefore, in the present embodiment, the configuration of the first urging member 62 will be described, and detailed description of other configurations and structures will be omitted.

The first urging member 62 in the present embodiment is a leaf spring made of a metal plate having a predetermined plate thickness and formed in a shape as shown in FIGS. 14 and 15.
The elasticity of the first urging member 62 is adjusted by changing the plate thickness of the leaf spring. Similar to the first urging member 22 in the first embodiment, the first urging member 62 has a force (spring force) that urges the timing belt fixing lever 21, and the second urging member 24 has a timing belt removal preventing member 23. It is set to be larger than the force (spring force) for energizing the spring.

The first urging member 62 includes an upper plate 63, a first side plate 64, and a second side plate 65.
The upper plate 63 is provided with an insertion hole 66 and a notch 67 as shown in FIG.
The insertion hole 66 is formed through the central portion of the upper plate 63 as shown in FIG. The insertion hole 66 is formed so that the first fitting shaft 54 of the timing belt removal preventing member 23 shown in FIG. 14 can be inserted.
As shown in FIGS. 15A and 15B, the notch 67 is notched from the middle part of the upper plate 63 to the middle part of the first side plate 64 described later. The notch 67 is formed in a shape that allows the movement restricting projection 47 of the timing belt fixing lever 21 shown in FIG. 14 to be inserted.

  As shown in FIG. 15C, the first side plate 64 is provided continuously with the front end of the upper plate 63 so as to be inclined downward. The first side plate 64 is formed so as to be elastically deformed as illustrated by a virtual line in FIG. The first side plate 64 is formed with a notch 67 continuous from the upper plate 63 from the upper end to the middle portion.

  As shown in FIG. 15C, the second side plate 65 is continuously provided at the rear end of the upper plate 63 and is formed so as to extend downward substantially perpendicular to the upper plate 63.

Next, the procedure for assembling the timing belt coupling tool 61 will be described.
The timing belt connecting tool 61 is assembled by inserting the first insertion shaft 54 of the timing belt removal preventing member 23 into the insertion hole 66 of the first biasing member 62 and the timing belt fixing lever 21. The movement restricting projection 47 is inserted into a notch 67 formed on the first side plate 64 of the first urging member 62, and the timing belt contact portion 46 is disposed so as to contact the first side plate 64. The procedure of the assembly work in the first embodiment is the same.

Next, an operation procedure for connecting and fixing the terminal portion of the timing belt 10 to the timing belt coupling tool 61 and the operation of each portion will be described.
First, as shown in FIG. 16, the first insertion shaft 54 of the timing belt removal preventing member 23 is pushed down in the direction indicated by the arrow K shown in FIG. Move to the lower side of the chamber 35.
Then, the timing belt fixing lever 21 is biased by the first biasing member 62 at one end side (timing belt contact portion 46) of the timing belt fixing lever 21, and the other end side of the timing belt fixing lever 21 (FIG. 8). , The front end in the front-rear direction) rotates from the position where the timing belt 10 is fixed toward the position where the timing belt 10 is released (in the direction opposite to the direction indicated by the arrow M in FIG. 16). Move.
Further, the end portion of the timing belt 10 is inserted through the timing belt insertion / removal port 41 from the direction indicated by the arrow L shown in FIG. Then, the tip of the timing belt 10 is brought into contact with the timing belt contact portion 46.

Then, the timing belt fixing lever 21 is pushed down from above and rotated in the direction indicated by the arrow M shown in FIG. Then, the other end side of the timing belt fixing lever 21 passes through the lever entrance 37 as shown in FIG. 17, reaches the position where the terminal portion of the timing belt 10 is fixed, and ends the rotation. At this time, the retaining groove 48 of the timing belt fixing lever 21 is fitted into the tooth portion 10 b of the timing belt 10.
Thereafter, the depression of the first insertion shaft 54 of the timing belt slip-off preventing member 23 is released. Then, the movement restricting portion 55 is urged by the second urging member 24 in the direction indicated by the arrow N shown in FIG. As a result, the movement restricting portion 55 moves in the direction indicated by the arrow N.

In FIG. 17, the timing belt 10 is pulled in the pulling direction (the direction indicated by the arrow P illustrated in FIG. 17) so that the rotation shaft 45 of the timing belt fixing lever 21 is illustrated along the guide long hole 44. 17 is moved in the direction indicated by the arrow P shown in FIG.
Then, as shown in FIG. 18, the engaging protrusion 49 of the timing belt fixing lever 21 engages with the timing belt fixing lever engaging portion 42 of the tool body 20.
Thus, the operation of connecting and fixing the terminal portion of the timing belt 10 to the timing belt coupling tool 61 is completed.

Here, the operation of the present invention when a force is applied to the timing belt 10 to push it in the insertion direction when the timing belt 10 is inserted into the tool body 20 will be described.
When the door 4 of the automatic door device 1 as shown in FIG. 1 hits the stopper, the timing belt 10 is inserted when the timing belt 10 is inserted into the tool body 20 as shown in FIG. A force to push in the direction (the direction indicated by the arrow Q in FIG. 19) acts.

  In such a case, if the timing belt coupling tool 201 of the prior art shown in FIG. 23 is used, the timing belt 202 is inserted into the tool body 203 (in FIG. 23C, the direction indicated by the arrow Z). The engagement between the anchoring portion 209 of the rotation lever 204 and the rotation lever locking portion 206 of the tool main body 203 is released. As a result, the timing belt coupling tool 201 opens the rotation lever 204, and the connection fixing state of the terminal of the timing belt 202 is released. Then, the timing belt 202 is detached from the timing belt coupling tool 201.

On the other hand, in the timing belt coupling tool 61 of this embodiment, as shown in FIG. 19, the movement restriction portion 55 of the timing belt removal preventing member 23 is substantially the same height as the movement restriction protrusion 47 of the timing belt fixing lever 21. In the state of being arranged at the position, the force that tries to push the timing belt 10 in the insertion direction (the direction indicated by the arrow Q in FIG. 19) when the timing belt 10 is inserted into the tool body 20. Even if the operation is performed, the movement restricting projection 47 of the timing belt fixing lever 21 contacts the movement restricting portion 55 of the timing belt removal preventing member 23. Thereby, the movement of the timing belt fixing lever 21 in the direction indicated by the arrow Q shown in FIG. 11 is restricted. For this reason, the engagement between the engagement protrusion 49 of the timing belt fixing lever 21 and the timing belt fixing lever engaging portion 42 of the tool body 20 is not released.
Therefore, the timing belt 10 is not detached from the tool body 20.

Finally, a procedure for releasing the connection and fixing between the terminal portion of the timing belt 10 and the timing belt coupling tool 61 and the operation of each portion will be described.
First, as shown in FIG. 20, the first insertion shaft 54 of the timing belt slip-off preventing member 23 is pushed down in the direction indicated by the arrow R shown in FIG. Then, the movement restricting portion 55 of the timing belt removal preventing member 23 moves to a height position that is lower than the height position of the movement restricting protrusion 47 of the timing belt fixing lever 21 as shown in FIG.

  Then, as shown in FIG. 20, the timing belt 10 is pushed in the direction of insertion into the tool body 20 (the direction indicated by the arrow S in FIG. 20), and the rotation shaft 45 of the timing belt fixing lever 21 is guided. It moves along the long hole 44 in the direction indicated by the arrow S shown in FIG.

Then, as shown in FIG. 21, the engagement between the engaging protrusion 49 of the timing belt fixing lever 21 and the timing belt fixing lever engaging portion 42 of the tool body 20 is released. Then, due to the urging of the first urging member 62, the other end side of the timing belt fixing lever 21 moves from the position where the timing belt 21 is fixed to the position where the timing belt 10 is released (in FIG. 21, the arrow U Rotate in the direction indicated by
Thus, the operation for releasing the connection and fixing between the terminal portion of the timing belt 10 and the timing belt coupling tool 61 is completed.

  As described above with reference to FIGS. 14 to 21, according to the present invention, the same effects as those of the first embodiment can be obtained.

  In addition, the present invention can of course be modified in various ways within the scope not changing the gist of the present invention.

  DESCRIPTION OF SYMBOLS 1 ... Automatic door apparatus, 2 ... Automatic door apparatus base, 3 ... Drive unit, 4 ... Door, 5 ... Motor, 6 ... Reduction gear, 7 ... Shaft, 8 ... Pulley (main drive pulley), 9 ... Idler pulley (driven pulley) , 10 ... Timing belt (toothed belt), 10a ... Lower surface, 10b ... Teeth, 11, 61 ... Timing belt coupling tool, 12 ... Mounting bracket, 13 ... Suspension fitting, 14 ... Timing belt coupling tool assembly groove, 15 ... Hanging bracket body, 16 ... Hanger roller, 17,18 ... Bolt, 19 ... Nut, 20 ... Tool body, 21 ... Timing belt fixing lever, 22,62 ... First biasing member, 23 ... Timing belt slip-off preventing member, 24 ... second urging member, 25 ... screw hole, 26 ... screw, 27 ... nut, 28 ... half body 29 ... Upper wall, 30 ... Bottom wall, 31 ... Front wall, 32 ... Rear wall, 33 ... Side wall, 34 ... Timing belt terminal housing chamber, 35 ... Removal prevention member housing chamber, 36 ... Bolt housing chamber, 37 ... Lever Entry / exit 38, first fitting insertion hole 39, timing belt mounting surface 40, second fitting insertion hole 41, timing belt insertion / removal opening 42, timing belt fixing lever engaging portion 43, bolt insertion hole 44 ... guide long hole, 45 ... rotating shaft, 46 ... timing belt contact portion, 47 ... movement restricting projection, 48 ... retaining groove, 49 ... engaging projection, 50 ... nut mounting portion, 51 ... ring portion, 52 ... First leg 53, second leg 54, first insertion shaft (insertion shaft) 55, movement restricting section 56, second insertion shaft (insertion shaft) 63, upper plate 64 ... first side plate, 65 ... second side plate, 66 Insertion hole, 67 ... cut-out portion

Claims (3)

A tool body for connecting and fixing a terminal of a timing belt for transferring a door of an automatic door, wherein the terminal of the timing belt is removably inserted;
A timing belt fixing lever, one end of which is rotatably attached to the tool body, and the other end is attached to form and fix the timing belt in an endless manner;
It is attached to the tool body so as to be movable in a direction orthogonal to the axial direction of the tool body, and the timing belt fixing lever is prevented from moving in the insertion direction of the timing belt by restricting movement from the tool body. A timing belt slip-off preventing member for preventing the timing belt from slipping;
With
In a state where the timing belt is fixed by the timing belt fixing lever, the timing belt removal preventing member restricts the movement of the timing belt fixing lever in the insertion direction of the timing belt, so that the timing belt is separated from the tool body. To prevent withdrawal,
Further, the timing belt fixing lever rotates at one end side of the timing belt fixing lever from the position where the other end side of the timing belt fixing lever fixes the timing belt to the position where the timing belt is released. A first biasing member for biasing to move is provided;
The timing belt slippage prevention member is provided with a second biasing member that biases the timing belt slippage prevention member to push up,
The force by which the first urging member urges the timing belt fixing lever is set to be larger than the force by which the second urging member urges the timing belt slip-off preventing member. Timing belt coupling tool. The timing belt coupling tool according to claim 1,
In the timing belt removal prevention member,
An insertion shaft that is inserted into the tool body so as to be movable in a direction perpendicular to the axial direction of the tool body;
A movement restricting portion formed integrally with the fitting insertion shaft and having a shape capable of restricting movement of the timing belt fixing lever in the inserting direction of the timing belt;
Is provided,
In a state where the timing belt fixing lever fixes the timing belt, the insertion shaft moves in a direction orthogonal to the axial direction of the tool body, and the movement restricting portion is substantially at the same height as one end of the timing belt fixing lever. A timing belt coupling tool, wherein   An automatic door device comprising the timing belt coupling tool according to claim 1.

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