JP6541826B2 - Automatic door device - Google Patents

Description

  The present invention relates to an automatic door apparatus having a drive mechanism for opening and closing a door, and having a drive pulley, a timing belt and a driven pulley as a transmission mechanism of the drive mechanism.

  In FIG. 19, the conventional automatic door apparatus 1 has a base 2 for attachment, a drive mechanism 3 attached to the base 2, and a door 4 opened and closed by driving the drive mechanism 3 (for example, Patent Document 1 below) reference). The drive mechanism 3 has a motor 5 and a transmission mechanism 6 for transmitting the driving force from the motor 5. The transmission mechanism 6 includes a driving pulley 7, a driven pulley 8 rotatably mounted at a position away from the driving pulley 7, a timing belt 9 wound around the driving pulley 7 and the driven pulley 8, and a reduction mechanism (not shown). And. The door 4 is attached to the timing belt 9 via the connector 10.

  The driven pulley 8 has a belt hooking surface 11 and a pair of flanges 12 continuous to both sides of the belt hooking surface 11 as shown in FIG. The belt hooking surface 11 is flat and has no unevenness, and a surface whose width direction is parallel to the rotation axis L of the driven pulley 8 when viewed in the state of FIG. The driven pulley 8 is rotatably attached to a support 13 fixed to the base 2. Reference numeral 14 in FIG. 20 (b) indicates a belt tooth. Reference numeral 15 denotes a tooth tip, reference numeral 16 denotes a tooth groove, and reference numeral 17 denotes a belt body.

JP, 2008-156958, A

  In the above-mentioned prior art, by continuing the opening and closing movement of the door 4, rubbing in the rotational direction occurs between the tip 14 of the timing belt 9 and the belt hooking surface 11, and this rubbing causes noise (friction Has the problem of producing sound). When the rubbing noise gradually increases and leaks from the automatic door device 1, for example, the passerby may feel uncomfortable.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide an automatic door device capable of preventing the occurrence of rubbing noise and reducing the rubbing noise.

The automatic door apparatus of the present invention according to claim 1 made to solve the above problems has a door and a drive mechanism for opening and closing the door, the drive mechanism comprising a motor and a driving force from the motor. A transmission mechanism has a transmission mechanism, and the transmission mechanism has a driving pulley, a timing belt wound around the driving pulley, and a driven pulley wound around the timing belt, and the driven pulley includes belt teeth of the timing belt. In an automatic door apparatus having a belt hooking surface with which a tooth tip contacts at
The main driving pulley is mounted near the motor and includes a pulley main body and a plurality of pulley teeth (26) provided on the outer peripheral surface of the pulley main body at equal pitches.
The driven pulley is mounted on the outer periphery of the pulley body of the driven pulley and has a belt-engaging surface with a circular cross-section without the pulley teeth such as the main driving pulley, and is mounted at a distance from the main driving pulley. ,
The belt hooking surface having the circular cross section is formed as a portion where a scooping portion or a friction reducing portion exists over the entire circumference of the belt hooking surface,
While the as-eaten lump portion formed in a portion of the plurality of lateral grooves shaped write No such bite recessed said addendum is a number, wherein as friction reducing unit friction between and teeth destination not bite said addendum is formed on the portion including the grooves or shallow recesses, such as to the small,
Furthermore, the timing belt has a tooth slope from the tooth top to the tooth space and a third friction reducing portion at the tooth top, and has a second friction reducing portion on the flange facing surface of the belt teeth, The third friction reducing portion is formed in a portion that reduces friction with the drive pulley, and the portion that reduces the friction includes a plurality of grooves, while the second portion decreases The friction reducing portion is formed in a portion to reduce friction with the inner surfaces of the drive pulley and / or the pair of flanges of the driven pulley, and the portion including a groove is formed to reduce the friction. It is characterized by being.

According to the present invention having such a feature, the timing belt 24 is used to reduce (make smaller) the friction with the driving pulley 22 as well as the driven pulley 23 and the friction with the flange. Is further reduced, and as a result, the generation of sound due to rubbing can be reduced. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

  On the other hand, when the friction reducing portion is formed over the entire circumference on the belt hooking surface of the driven pulley, and the door opening / closing motion as described above continues for a long period of time (when using the timing belt for a long time) The tooth tips of the belt teeth of the belt may not grip the belt hooking surface, which causes a rotational rubbing (slip) between the tooth tip and the belt hooking surface. However, according to the present invention, the friction reducing portion of the belt hooking surface is formed as a portion that reduces the friction with the tooth tip, and the portion to be rubbed is reduced, thereby reducing the generation of noise caused by rubbing. It is done (the rubbing noise is reduced). As a result, no rubbing noise leaks out of the automatic door device, and for example, it does not naturally occur that the passersby feels uncomfortable.

  As understood from the above, in the present invention, it is sufficient to form the scooping portion or the friction reducing portion on the belt hooking surface of the driven pulley.

  According to a second aspect of the present invention, in the automatic door apparatus according to the first aspect, the driven pulley has a pair of flanges continuous with both sides of the belt hooking surface, and the pair of flanges It is characterized in that it is formed in a portion where the distance between the respective inner surfaces gradually increases from the end toward the flange tip.

  According to the present invention having such a feature, even if the timing belt is biased due to any factor (even if there is a bias such as misalignment on the flange side), the pair of flanges have tapered inner surfaces. Thus, contact between the belt teeth and the flange facing surface is less likely to occur. That is, it is possible to take into consideration the rubbing with the flange.

According to the present invention described in the first and second aspects, it is possible to prevent the generation of the rubbing noise and to reduce the rubbing noise.

It is a figure which shows the automatic door apparatus of this invention, (a) is a front view of an automatic door apparatus, (b) is an enlarged view of the main motion pulley of (a), (c) is an enlarged view of a driven pulley of (a). It is. It is a figure of the driven pulley in which the scooping part containing roughness shape was formed, (a) is an enlarged view of a driven pulley (inside circle is a principal part enlarged view), (b) saw the driven pulley from the arrow A direction. It is a figure (Example 1). It is a figure of the driven pulley in which the entrapment part containing a fine uneven | corrugated shape was formed, (a) is the enlarged view of a driven pulley (inside of a circle is a principal part enlarged view), (b) looks a driven pulley from the arrow A direction. (Example 2). It is a figure of the driven pulley in which the entrapment part containing many horizontal groove shapes was formed, (a) is an enlarged view of a driven pulley (inside circle is a principal part enlarged view), (b) follows a driven pulley from the arrow A direction. It is the figure seen (Example 3). It is a figure of a driven pulley in which the friction reduction part containing a plurality of vertical grooves was formed, (a) is an enlarged view of a driven pulley (inside circle is a main part enlarged view), (b) follows a driven pulley from arrow A direction. It is the figure seen (Example 4). 5 is a diagram according to the friction reducing portion of FIG. 5, (a) is an enlarged view of the main part, (b) is a schematic view showing another example of the longitudinal groove, and (c) is a case where the belt hooking surface is formed in an arc shape It is a principal part enlarged view of. It is a figure of a driven pulley in which the friction reduction part containing a plurality of slanted grooves was formed, (a) is an enlarged view of a driven pulley (inside circle is an enlarged view of the main part), (b) follows a driven pulley in the arrow A direction. FIG. 16 is a view from the viewpoint of (Example 5). It is a figure of a driven pulley in which the friction reduction part containing a plurality of curvilinear grooves was formed, (a) is an enlarged view of a driven pulley (inside circle is a main part enlarged view), (b) follows a driven pulley from arrow A direction. It is the figure seen (Example 6). It is a figure of the driven pulley in which the friction reduction part containing a mesh groove (grid-like groove) was formed, (a) is an enlarged view of a driven pulley (inside circle is a main part enlarged view), (b) is a driven pulley It is the figure seen from the arrow A direction (Example 7). It is a figure of the driven pulley in which the friction reduction part containing several elliptical recessed parts was formed, (a) is an enlarged view of a driven pulley (inside circle is a principal part enlarged view), (b) follows a driven pulley in the arrow A direction. FIG. 18 is a view from the viewpoint of (Example 8). It is a figure concerning the timing belt in which the friction reduction part containing a plurality of grooves was formed in the tooth slope, (a) is an enlarged view of the driving pulley (inside circle is an enlarged view of the main part), (b) is an enlarged view of the timing belt. It is a perspective view (Example 9). It is a figure concerning the timing belt in which the friction reduction part containing a plurality of grooves was formed in the tooth slope and the tooth tip, (a) is an enlarged view of the driving pulley (in the circle is an enlarged view of the main part), (b) is the timing It is an expansion perspective view of a belt (Example 10). FIG. 7 is a diagram relating to a timing belt in which a friction reducing portion including a plurality of grooves is formed on a tooth slope, a tooth tip, and a flange opposing surface, and (a) is an enlarged view of a driving pulley (inside circle is a main part enlarged view); (B) is an expansion perspective view of a timing belt (Example 11). It is a figure concerning the timing belt in which the friction reduction part containing a plurality of crevices was formed in the tooth slope, (a) is an enlarged view of the driving pulley (inside circle is a main part enlarged view), (b) is an enlarged drawing of the timing belt. It is a perspective view (Example 12). It is a figure which concerns on the main motion pulley in which the friction reduction part containing several grooves was formed in the pulley tooth slope, (a) is an enlarged view of a main motion pulley, (b) is an expansion perspective view of a main motion pulley (Example 13) ). It is a figure which concerns on the main motion pulley in which the friction reduction part containing several grooves was formed in the pulley tooth slope and the belt opposing surface, (a) is an enlarged view of a main motion pulley, (b) is an expansion perspective view of a main motion pulley. (Example 14). It is a figure which concerns on the main motion pulley in which the friction reduction part containing the slit was formed in the pulley tooth, (a) is an enlarged view of a main motion pulley, (b) is an expansion perspective view of a main motion pulley (Example 15). It is a figure which concerns on the main motion pulley in which the friction reduction part containing several recessed parts was formed in the pulley tooth slope, (a) is an enlarged view of a main motion pulley, (b) is an expansion perspective view of a main motion pulley (Example 16) ). It is a front view which shows the automatic door apparatus of a prior art example. It is a figure which shows the driven pulley of a prior art example, (a) is the enlarged view seen from the arrow B direction of FIG. 19, (b) is the figure seen from the arrow C direction of (a).

  The automatic door apparatus has a door and a drive mechanism for opening and closing the door, and the drive mechanism has a motor and a transmission mechanism for transmitting a driving force from the motor. In addition, the transmission mechanism has a driving pulley, a timing belt that is wound around the driving pulley, and a driven pulley that is wound around the timing belt, and the driven pulley is a belt hooking surface with which the tips of the belt teeth of the timing belt contact. Have.

  In such an automatic door device, a scooping portion or a friction reducing portion is formed on the entire surface of the belt hooking surface. The scooping portion is formed in a portion that allows scooping into the tips of the belt teeth. On the other hand, the friction reducing portion is formed in a portion which makes the friction with the tooth tip small (small).

  Hereinafter, Example 1 will be described with reference to the drawings. FIG. 1 is a view showing an automatic door apparatus according to the present invention, wherein (a) is a front view of the automatic door apparatus, (b) is an enlarged view of a main moving pulley of (a), and (c) is a driven pulley of (a). FIG. 2A and 2B are diagrams of the driven pulley in which a scooping portion including a rough shape is formed. FIG. 2A is an enlarged view of the driven pulley (in the circle is an enlarged view of a main part), and FIG. It is the figure seen from the A direction.

<Configuration of Automatic Door Device 21>
In FIG. 1 (a), the automatic door device 21 is configured to automatically open and close the door 4 in the left and right direction for the passage of people, the loading of articles, and the like. The automatic door device 21 has a mounting base 2, a drive mechanism 3 attached to the base 2, a controller (not shown) that controls the drive mechanism 3, and a door 4 that opens and closes by driving the drive mechanism 3.

  The drive mechanism 3 has a motor 5 and a transmission mechanism 6 for transmitting the driving force from the motor 5. The transmission mechanism 6 includes a drive pulley 22, a driven pulley 23 rotatably mounted at a position away from the drive pulley 22, a timing belt 24 wound around the drive pulley 22 and the driven pulley 23, and a speed reduction mechanism (not shown). And. The door 4 is attached to the timing belt 24 via the connector 10.

<About Fig. 1>
Here, FIG. 1 will be supplementarily described. It is assumed that FIG. 1A showing the automatic door device 21 having the above configuration is not limited to the first embodiment but is a common drawing of the second to sixteenth embodiments. Therefore, it is omitted to show the same figure as Fig.1 (a) in the drawings after Example 2. Also, FIG. 1 (b) and / or FIG. 1 (c) can be omitted as well.

<About the drive pulley 22>
In FIG. 1 (b), the main driving pulley 22 has a pulley main body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley main body 25 at equal pitches. The same main drive pulley 22 as that of the conventional main drive pulley 7 (see FIG. 19) in the first embodiment is adopted (this is an example). This is the same as the main driving pulley 7, but the main driving pulley 22 of the embodiments 13 to 16 has a slightly different shape because the feature of the present invention is added. The main driving pulley 22 is mounted in the same state as the conventional example.

<About driven pulley 23>
In FIG. 1 (c), the driven pulley 23 has a pulley body 27 and a pair of flanges 28 integrated with the pulley body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

  The driven pulley 23 is rotatably attached to a support 13 (see FIG. 20) fixed to the base 2. That is, the driven pulley 23 is mounted in the same state as the conventional example. The driven pulley 23 is mounted at the beginning of the installation of the automatic door device 21 or is mounted by replacing the driven pulley 8 of the conventional example (see FIGS. 19 and 20).

  In FIG. 1 (c) and FIG. 2, the pair of flanges 28 are formed as continuous portions on both sides of the belt hooking surface 29. Further, the pair of flanges 28 are formed to be annular ridges, respectively. The outer surfaces of such a pair of flanges 28 are formed to be parallel to each other. On the other hand, the inner surfaces 30 of the pair of flanges 28 are formed so as not to be parallel to each other. That is, it is formed in a tapered portion such that the distance between the inner surfaces 30 gradually increases from the flange proximal end (root) to the flange distal end.

<About the timing belt 24>
1 (b) and 1 (c), the timing belt 24 has a belt-like endless belt main body 31 and a plurality of belt teeth 32 provided at equal pitches on the inner peripheral surface side of the belt main body 31. . Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. As such a timing belt 24, a known one is employed. That is, the same one as the prior art timing belt 9 (see FIGS. 19 and 20) is adopted (as an example. Examples 9 to 12 are slightly different because the features of the present invention are added. Shape)).

  The timing belt 24 is wound around the driving pulley 22 and the driven pulley 23 in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface of the winding portion, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the tooth tips 33 of the belt teeth 32 come into contact with the belt hooking surface 29 in a state where the above-described force is generated.

<Regarding the Characteristic Portions of the Present Invention (Penetration Part K)>
In FIG. 2, the characterizing portion of the present invention of the first embodiment is a scooping portion K formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The scooping portion K is a portion that allows the teeth 33 of the belt teeth 32 in the timing belt 24 to be scooped into the teeth 33, and in Example 1, the rough shape 37 (shape like sand paper) Is formed. In other words, it is configured to include a portion for gripping the tip 33.

  Note that the scooping portion K is not only formed in the entire width direction of the belt hooking surface 29 as illustrated, but may be formed over the entire circumference of the belt hooking surface 29 in one or more states. Do.

<On the action and effect of the penetration portion K>
In the above configuration and structure, the winding portion K including the rough shape 37 is formed on the entire periphery of the belt hooking surface 29 of the driven pulley 23 to wind the timing belt 24, and the driving force from the motor 5 is transmitted to the main driving pulley 22. When the timing belt 24 is moved to open and close the door 4, at this time, the tooth tips 33 of the belt teeth 32 of the timing belt 24 dig into the rough shape 37 of the portion K (Example 1) In this case, about ten teeth tips 33 grip), and as a result, the timing belt 24 and the driven pulley 23 start to move in synchronization. That is, in accordance with the movement of the timing belt 24, the driven pulley 23 is rotated. As a result, rubbing in the rotational direction does not occur between the tooth tips 33 and the belt hooking surface 29, and the generation of noise caused by rubbing does not occur.

  As described above with reference to FIGS. 1 and 2, according to the present invention of the first embodiment, the generation of the rubbing noise can be prevented at the scooping portion K including the rough shape 37. Play. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the first embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A scooping portion (K) is formed on the belt support surface (29) along the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
An automatic door apparatus (21) characterized by being formed including a rough shape (37) as the part to be embedded. "
become.

  Example 2 will be described below with reference to the drawings. FIG. 3 is a view of the driven pulley in which a scooped portion including fine concavo-convex shape is formed, where (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of the main part) and (b) is an arrow A of the driven pulley. It is the figure seen from the direction. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 3, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and has a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<Regarding the Characteristic Portions of the Present Invention (Penetration Part K)>
In FIG. 3, the characterizing portion of the present invention of the second embodiment is a scooping portion K formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The scooping portion K is a portion where the teeth 33 of the belt teeth 32 in the timing belt 24 are scooped into the teeth 33. In the second embodiment, the fine concavo-convex shape 38 (knurling is performed. Shape is included. In other words, it is configured to include a portion for gripping the tip 33.

<On the action and effect of the penetration portion K>
In the above configuration and structure, the winding portion K including the fine concavo-convex shape 38 is formed all around the belt hooking surface 29 of the driven pulley 23, the timing belt 24 is wound, and the driving force from the motor 5 is driven by the driving pulley 22. To move the timing belt 24 to open and close the door 4. At this time, the tooth tips 33 of the belt teeth 32 of the timing belt 24 dig into the fine concavo-convex shape 38 of the wedge portion K (implementation In Example 2, about ten teeth tips 33 grip), and as a result, the timing belt 24 and the driven pulley 23 start to move in synchronization. That is, in accordance with the movement of the timing belt 24, the driven pulley 23 is rotated. As a result, rubbing in the rotational direction does not occur between the tooth tips 33 and the belt hooking surface 29, and the generation of noise caused by rubbing does not occur.

  As described above with reference to FIG. 3, according to the present invention of the second embodiment, it is possible to prevent the generation of the rubbing noise at the penetration portion K including the fine concavo-convex shape 38. . As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the second embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A scooping portion (K) is formed on the belt support surface (29) along the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
An automatic door device (21) characterized in that the portion to be scooped in is formed including a fine uneven shape (38). "
become.

  The third embodiment will be described below with reference to the drawings. FIG. 4 is a view of a driven pulley in which a scooping portion including a number of lateral groove shapes is formed, where (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of the main part) and (b) is an arrow of the driven pulley. It is the figure seen from the A direction. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 4, the driven pulley 23 is a member that constitutes the automatic door device 21 (see FIG. 1A), and includes a pulley body 27 and a pair of flanges 28 integrated with the pulley body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<Regarding the Characteristic Portions of the Present Invention (Penetration Part K)>
In FIG. 4, the characterizing portion of the present invention of the third embodiment is a scooping portion K formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The scooping portion K is a portion which allows the teeth 33 of the belt teeth 32 in the timing belt 24 to be scooped into the teeth 33 and is formed so as to include a number of lateral groove shapes 39 in the third embodiment. Ru. In other words, it is configured to include a portion for gripping the tip 33.

<On the action and effect of the penetration portion K>
In the above construction and structure, a winding portion K including a large number of lateral groove shapes 39 is formed all around the belt hooking surface 29 of the driven pulley 23, the timing belt 24 is wound, and the driving force from the motor 5 is driven by the driving pulley. At this time, when the timing belt 24 is moved to move the timing belt 24 and the door 4 is opened and closed, at this time, the tooth tips 33 of the belt teeth 32 of the timing belt 24 dig into the many lateral groove shapes 39 of the wedge portion K. As a result, the timing belt 24 and the driven pulley 23 start to move in synchronization with each other. That is, in accordance with the movement of the timing belt 24, the driven pulley 23 is rotated. As a result, rubbing in the rotational direction does not occur between the tooth tips 33 and the belt hooking surface 29, and the generation of noise caused by rubbing does not occur.

  As described above with reference to FIG. 4, according to the present invention of the third embodiment, it is possible to prevent the generation of the rubbing noise at the scooping portion K including a large number of lateral groove shapes 39. Play. As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the third embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A scooping portion (K) is formed on the belt support surface (29) along the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
An automatic door device (21) characterized in that the portion to be scooped in is formed including a plurality of lateral groove shapes (39). "
It becomes.

  The fourth embodiment will be described below with reference to the drawings. FIG. 5 is a view of a driven pulley in which a friction reducing portion including a plurality of longitudinal grooves is formed, where (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of the main part) and (b) is an arrow of the driven pulley It is the figure seen from the A direction. 6 is a diagram related to the friction reducing portion of FIG. 5, (a) is an enlarged view of the main part, (b) is a schematic view showing another example of the vertical groove, and (c) is a belted surface having a circle It is a principal part enlarged view at the time of forming in arc shape. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 5, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and has a pulley body 27 and a pair of flanges 28 integrated with the pulley body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<About the feature part (friction reduction part M) of the present invention>
In FIGS. 5 and 6A, the characterizing portion of the present invention of the fourth embodiment is the friction reducing portion M formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The friction reducing portion M is a portion that reduces the friction with the tooth tips 33 of the belt teeth 32 in the timing belt 24 with the tooth tips 33. In the fourth embodiment, a plurality of longitudinal grooves 40 are formed. Be done. In other words, it is configured to include a portion for reducing friction with the tip 33. The plurality of longitudinal grooves 40 are formed, for example, in a dimensional relationship in the drawing.

  The friction reducing portion M is not limited to the plurality of vertical grooves 40 including square peaks and valleys as schematically shown in FIG. 6B, but may be trapezoidal peaks and valleys or semicircular peaks and valleys. The illustrated shape may be included. In addition, the belt hooking surface 29 may be a curved surface CV (arc surface) as shown in FIG. 6C instead of a horizontal surface, and a friction reducing portion M including a plurality of longitudinal grooves 40 may be formed thereon. (The curved surface CV can also be applied to other embodiments).

<About the action and effect of the friction reducing portion M>
In the above construction and structure, the friction reducing portion M including the plurality of longitudinal grooves 40 is formed all around the belt hooking surface 29 of the driven pulley 23 to wind the timing belt 24, and the driving force from the motor 5 is driven by the driving pulley. When the timing belt 24 is moved to 22 and the timing belt 24 is moved and the opening / closing motion of the door 4 is continued for a long period of time (when using the timing belt 24 for a long time without replacing it), the tooth tips 33 of the belt teeth 32 of the timing belt 24 are belted The surface 29 may not be gripped, which causes a rotational rubbing (slip) between the tip 33 and the belt surface 29. However, in the present invention, the friction reducing portion M of the belt hooking surface 29 is formed as a portion that reduces the friction with the tooth tip 33, and the portion to be rubbed is reduced, so that the noise caused by rubbing is The occurrence is also reduced (the rubbing noise is reduced). As a result, no rubbing noise leaks from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIGS. 5 and 6, according to the present invention of the fourth embodiment, the effect of reducing the rubbing noise at the friction reducing portion M including the plurality of vertical grooves 40 can be reduced. Play. As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the fourth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A friction reducing portion (M) is formed on the belt support surface (29) along the entire circumference of the belt.
The friction reducing portion (M) is formed in a portion that reduces the friction with the tip (33),
An automatic door device (21) characterized in that the portion for reducing the friction is formed to include a plurality of longitudinal grooves (40). "
become.

  Example 5 will be described below with reference to the drawings. FIG. 7 is a view of a driven pulley in which a friction reducing portion including a plurality of oblique grooves is formed, where (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of the main part) and (b) is a driven pulley It is the figure seen from the arrow A direction. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 7, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and has a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<About the feature part (friction reduction part M) of the present invention>
In FIG. 7, the characterizing portion of the present invention of the fifth embodiment is a friction reducing portion M formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The friction reducing portion M is a portion that reduces the friction with the tooth tips 33 of the belt teeth 32 in the timing belt 24 with the tooth tips 33. In the fifth embodiment, a plurality of oblique grooves 41 are included. It is formed. In other words, it is configured to include a portion for reducing friction with the tip 33.

<About the action and effect of the friction reducing portion M>
In the above configuration and structure, the friction reducing portion M including a plurality of oblique grooves 41 is formed all around the belt hooking surface 29 of the driven pulley 23, the timing belt 24 is wound, and the driving force from the motor 5 is driven. If the timing belt 24 is moved to the pulley 22 to move the timing belt 24 and the opening and closing motion of the door 4 is continued for a long period of time (if the timing belt 24 is not replaced and continued to be used for a long time) The grip surface 29 may not be gripped, which causes a rotational rubbing (slip) between the tip 33 and the belt support surface 29. However, in the present invention, the friction reducing portion M of the belt hooking surface 29 is formed as a portion that reduces the friction with the tooth tip 33, and the portion to be rubbed is reduced, so that the noise caused by rubbing is The occurrence is also reduced (the rubbing noise is reduced). As a result, no rubbing noise leaks from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIG. 7, according to the present invention of the fifth embodiment, it is possible to reduce the rubbing noise at the friction reducing portion M including the plurality of oblique grooves 41. . As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the fifth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A friction reducing portion (M) is formed on the belt support surface (29) along the entire circumference of the belt.
The friction reducing portion (M) is formed in a portion that reduces the friction with the tip (33),
An automatic door device (21) characterized by being formed including a plurality of oblique grooves (41) as a portion that reduces the friction. "
become.

  Example 6 will be described below with reference to the drawings. FIG. 8 is a view of a driven pulley in which a friction reducing portion including a plurality of curved grooves is formed, in which (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of the main part) and (b) is an arrow of the driven pulley It is the figure seen from the A direction. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 8, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and has a pulley body 27 and a pair of flanges 28 integrated with the pulley body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<About the feature part (friction reduction part M) of the present invention>
In FIG. 8, the characterizing portion of the present invention of the sixth embodiment is a friction reducing portion M formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The friction reducing portion M is a portion that reduces the friction with the tooth tips 33 of the belt teeth 32 in the timing belt 24 with the tooth tips 33 and is formed to include a plurality of curved grooves 42 in the sixth embodiment. Be done. In other words, it is configured to include a portion for reducing friction with the tip 33.

<About the action and effect of the friction reducing portion M>
In the above construction and structure, the friction reducing portion M including a plurality of curved grooves 42 is formed on the entire periphery of the belt hooking surface 29 of the driven pulley 23 to wind the timing belt 24, and the driving force from the motor 5 is driven by the driving pulley. When the timing belt 24 is moved to 22 and the timing belt 24 is moved and the opening / closing motion of the door 4 is continued for a long period of time (when using the timing belt 24 for a long time without replacing it), the tooth tips 33 of the belt teeth 32 of the timing belt 24 are belted The surface 29 may not be gripped, which causes a rotational rubbing (slip) between the tip 33 and the belt surface 29. However, in the present invention, the friction reducing portion M of the belt hooking surface 29 is formed as a portion that reduces the friction with the tooth tip 33, and the portion to be rubbed is reduced, so that the noise caused by rubbing is The occurrence is also reduced (the rubbing noise is reduced). As a result, no rubbing noise leaks from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIG. 8, according to the present invention of the sixth embodiment, it is possible to reduce the rubbing noise at the friction reducing portion M including the plurality of curved grooves 42. As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the sixth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A friction reducing portion (M) is formed on the belt support surface (29) along the entire circumference of the belt.
The friction reducing portion (M) is formed in a portion that reduces the friction with the tip (33),
An automatic door device (21) characterized by being formed including a plurality of curvilinear grooves (42) as a portion that reduces the friction. "
become.

  Example 7 will be described below with reference to the drawings. FIG. 9 is a view of a driven pulley having a friction reducing portion including a mesh groove (grid-like groove), wherein (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of a main part) and (b) It is the figure which looked at the driven pulley from the arrow A direction. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 9, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and has a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<About the feature part (friction reduction part M) of the present invention>
In FIG. 9, the characterizing portion of the present invention of the seventh embodiment is a friction reducing portion M formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The friction reducing portion M is a portion that reduces the friction with the tooth tip 33 of the belt tooth 32 in the timing belt 24 with the tooth tip 33, and in the seventh embodiment, the mesh groove (grid groove) 43 Is formed. In other words, it is configured to include a portion for reducing friction with the tip 33.

<About the action and effect of the friction reducing portion M>
In the above construction and structure, the friction reducing portion M including the mesh grooves (lattice grooves) 43 is formed on the entire circumference of the belt hooking surface 29 of the driven pulley 23 to wind the timing belt 24 and driving from the motor 5 If the force is transmitted to the drive pulley 22 to move the timing belt 24 and the opening / closing motion of the door 4 is continued for a long period of time (when using the timing belt 24 for a long time without changing it) In some cases, the belt 33 does not grip the belt hooking surface 29, which causes a rotational rubbing (slip) between the tip 33 and the belt hooking surface 29. However, in the present invention, the friction reducing portion M of the belt hooking surface 29 is formed as a portion that reduces the friction with the tooth tip 33, and the portion to be rubbed is reduced, so that the noise caused by rubbing is The occurrence is also reduced (the rubbing noise is reduced). As a result, no rubbing noise leaks from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIG. 9, according to the present invention of the seventh embodiment, it is possible to reduce the rubbing noise at the friction reducing portion M including the mesh grooves (lattice-like grooves) 43. Play an effect. As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the seventh embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A friction reducing portion (M) is formed on the belt support surface (29) along the entire circumference of the belt.
The friction reducing portion (M) is formed in a portion that reduces the friction with the tip (33),
An automatic door apparatus (21) characterized by being formed including a mesh groove (grid-like groove) (43) as a portion that reduces the friction. "
become.

  Example 8 will be described below with reference to the drawings. FIG. 10 is a view of a driven pulley in which a friction reducing portion including a plurality of elliptical concave portions is formed, where (a) is an enlarged view of the driven pulley (in the circle is an enlarged view of the main part) and (b) is a driven pulley It is the figure seen from the arrow A direction. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About driven pulley 23>
In FIG. 10, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and has a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. Further, the driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley main body 27. The belt hooking surface 29 is formed as a winding portion of the timing belt 24 and as a portion on which the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the features of the present invention are present all around.

<About the feature part (friction reduction part M) of the present invention>
In FIG. 10, the characterizing portion of the present invention of the eighth embodiment is the friction reducing portion M formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The friction reducing portion M is a portion that reduces the friction with the tooth tips 33 of the belt teeth 32 in the timing belt 24 with the tooth tips 33. In the eighth embodiment, a plurality of oval concave portions 44 are included. It is formed. In other words, it is configured to include a portion for reducing friction with the tip 33. The elliptical recess 44 is not limited to the elliptical shallow recess, and may be, for example, a perfect circular shallow recess.

<About the action and effect of the friction reducing portion M>
In the above configuration and structure, the friction reducing portion M including the elliptical recess 44 is formed on the entire periphery of the belt hooking surface 29 of the driven pulley 23 to wind the timing belt 24, and the driving force from the motor 5 is driven by the driving pulley 22. If the timing belt 24 is moved to transmit the timing belt 24 and the opening and closing motion of the door 4 is continued for a long period of time (if the timing belt 24 is not used for replacement but continued to be used for a long time) In some cases, the grip 29 does not grip, which causes a rotational rubbing (slip) between the tip 33 and the belt hooking surface 29. However, in the present invention, the friction reducing portion M of the belt hooking surface 29 is formed as a portion that reduces the friction with the tooth tip 33, and the portion to be rubbed is reduced, so that the noise caused by rubbing is The occurrence is also reduced (the rubbing noise is reduced). As a result, no rubbing noise leaks from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIG. 10, according to the present invention of the eighth embodiment, it is possible to reduce the rubbing noise at the friction reducing portion M including the elliptical recess 44. As a result, the person passing through the automatic door device 21 (see FIG. 1A) or the person who is beside the automatic door device 21 will not feel uncomfortable.

The features of the eighth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
A friction reducing portion (M) is formed on the belt support surface (29) along the entire circumference of the belt.
The friction reducing portion (M) is formed in a portion that reduces the friction with the tip (33),
An automatic door device (21) characterized in that the portion for reducing the friction is formed to include an elliptical recess (44). "
become.

  Hereinafter, Example 9 will be described with reference to the drawings. FIG. 11 is a view relating to a timing belt in which a friction reducing portion including a plurality of grooves is formed on a tooth slope, and (a) is an enlarged view of a main moving pulley (inside circle is an enlarged view of main part), (b) is a timing It is an expansion perspective view of a belt. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the timing belt 24>
In FIG. 11, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1 (a)), and has a belt-like endless belt body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 form the features of the present invention.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the tips 33 of the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature portion (third friction reducing portion M3) of the present invention>
In FIG. 11, the characterizing portion of the present invention of the ninth embodiment is a third friction reduction portion M3 formed on the tooth slope 35 of the belt tooth 32 in the timing belt 24. The third friction reducing portion M3 is a portion that reduces the friction with the pulley tooth slope 45 with respect to the pulley tooth slope 45 of the pulley tooth 26 in the main driving pulley 22, and a plurality of grooves 46 in the ninth embodiment. Is formed. In other words, it is configured to include a portion for reducing friction with the pulley tooth flank 45. The illustrated number of the grooves 46 is an example, and for example, it may be only one at the center in the width direction.

<On the action and effect of the third friction reducing portion M3>
In the above configuration and structure, when the timing belt 24 having the third friction reducing portion M3 including the plurality of grooves 46 is wound around the driving pulley 22 and the driven pulleys 23 of the first to eighth embodiments, The belt teeth 32 mesh with the pulley teeth 26 of the drive pulley 22. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the third friction reducing portion M3 and the pulley tooth slope 45 of the pulley tooth 26 contact. . Since the third friction reducing portion M3 is formed as a portion that reduces the friction between the pulley teeth 26 and the pulley tooth slope 45, the portion to be rubbed is reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  In the present invention of the ninth embodiment, the timing belt 24 is used to reduce (make smaller) the friction with the driving pulley 22 as well as the driven pulley 23, so that the portion to be rubbed is reduced, and as a result, the rubbing is caused. Also, the generation of sound that is

  As described above with reference to FIG. 11, according to the present invention of the ninth embodiment, in addition to the effects of the first to eighth embodiments, the following effects are further achieved. That is, by employing the timing belt 24 that reduces (makes small) the friction with the driven pulley 22 as well as the driven pulley 23, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub There is an effect that can be reduced. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the ninth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Furthermore, the timing belt (24) has a third friction reducing portion (M3) on the tooth slope (35) from the tooth tip (33) to the tooth space (34),
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the drive pulley (22),
An automatic door apparatus (21) characterized by being formed including a plurality of grooves (46) as a portion that reduces the friction. "
become.

  Hereinafter, Example 10 will be described with reference to the drawings. Fig. 12 is a diagram relating to a timing belt in which friction reducing portions including a plurality of grooves are formed on tooth slopes and tooth tips, and (a) is an enlarged view of a driving pulley (in the circle is an enlarged view of the main part), (b ) Is an enlarged perspective view of a timing belt. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the timing belt 24>
In FIG. 12, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 form the features of the present invention.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature portion (third friction reducing portion M3) of the present invention>
In FIG. 12, the characterizing portion of the present invention of the tenth embodiment is a third friction reducing portion M3 formed on the tooth flank 35 and the tooth tip 33 of the belt tooth 32 in the timing belt 24. The third friction reducing portion M3 is a portion that reduces the friction with the pulley tooth slope 45 and the pulley tooth groove 47 with respect to the pulley tooth slope 45 and the pulley tooth groove 47 of the pulley tooth 26 in the main driving pulley 22. In the tenth embodiment, a plurality of grooves 48 are formed. In other words, it is configured to include a portion for reducing the friction between the pulley tooth flank 45 and the pulley tooth groove 47. The illustrated number of the grooves 48 is an example, and for example, it may be only one at the center in the width direction.

<On the action and effect of the third friction reducing portion M3>
In the above configuration and structure, when the timing belt 24 having the third friction reducing portion M3 including the plurality of grooves 48 is wound around the driving pulley 22 and the driven pulleys 23 of the first to eighth embodiments, The belt teeth 32 mesh with the pulley teeth 26 of the drive pulley 22. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing motion of the door 4, the pulley tooth slope 45 of the third friction reducing portion M3 and the pulley teeth 26 and the pulley tooth groove 47 contacts. The third friction reducing portion M3 is formed as a portion that reduces the friction between the pulley tooth 26 and the pulley tooth flank 45 and the pulley tooth groove 47, so that the portion to be rubbed is reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  In the tenth embodiment of the present invention, the timing belt 24 is used to reduce (make smaller) the friction with not only the driven pulley 23 but also the driving pulley 22 so that the portion to be rubbed is reduced, resulting in rubbing. Also, the generation of sound that is

  As described above with reference to FIG. 12, according to the present invention of the tenth embodiment, in addition to the effects of the first to eighth embodiments, the following effects are further achieved. That is, by employing the timing belt 24 that reduces (makes small) the friction with the driven pulley 22 as well as the driven pulley 23, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub There is an effect that can be reduced. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the tenth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Further, the timing belt (24) has a tooth slope (35) from the tooth top (33) to the tooth space (34) and a third friction reducing portion (M3) at the tooth top (33).
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the drive pulley (22),
An automatic door apparatus (21) characterized by being formed including a plurality of grooves (48) as a portion that reduces the friction. "
become.

  Example 11 will be described below with reference to the drawings. FIG. 13 is a view relating to a timing belt in which a friction reducing portion including a plurality of grooves is formed on a tooth slope, a tooth tip, and a flange opposing surface, and FIG. 13 (a) is an enlarged view of a driving pulley Fig. 6B is an enlarged perspective view of the timing belt. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the timing belt 24>
In FIG. 13, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 form the features of the present invention.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the fourth to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature of the present invention (the third friction reducing portion M3 and the second friction reducing portion M2)>
In FIG. 13, the characterizing portion of the present invention of the tenth embodiment is formed on the third friction reducing portion M3 formed on the tooth slope 35 of the belt tooth 32 in the timing belt 24 and on the flange opposing surface 36 of the belt tooth 32. Of the second friction reducing portion M2.

  The third friction reducing portion M3 is a portion for reducing the friction with the pulley tooth slope 45 with respect to the pulley tooth slope 45 of the pulley tooth 26 in the main driving pulley 22, and a plurality of grooves 46 in the eleventh embodiment. Is formed. In other words, it is configured to include a portion for reducing friction with the pulley tooth flank 45.

  On the other hand, the second friction reducing portion M2 is a portion that reduces the friction with the inner surface of the pair of flanges when the pair of flanges (not shown) is formed on the main driving pulley 22, and the embodiment This is a portion that reduces friction with the inner surface 30 with respect to the inner surface 30 of the pair of flanges 28 (see, for example, FIG. 5 and FIG. 6) of the driven pulleys 4 to 8. It is formed including.

<About the action and effect of the third friction reduction portion M3 and the second friction reduction portion M2>
In the above configuration and structure, the timing belt 24 having the third friction reduction portion M3 including the plurality of grooves 48 and the second friction reduction portion M2 including the grooves 49 is the drive pulley 22 and the fourth to eighth embodiments. At this time, the belt teeth 32 of the timing belt 24 and the pulley teeth 26 of the driving pulley 22 mesh with each other. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the third friction reducing portion M3 and the pulley tooth slope 45 of the pulley tooth 26 contact. . Since the third friction reducing portion M3 is formed as a portion that reduces the friction between the pulley teeth 26 and the pulley tooth slope 45, the portion to be rubbed is reduced. On the other hand, since the second friction reducing portion M2 is formed as a portion that reduces the friction with, for example, one of the flanges of the main driving pulley 22 when the timing belt 24 is biased due to some reason, the portion that rubs off Is further reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  In the present invention of the eleventh embodiment, the timing belt 24 is used to reduce (make smaller) the friction with not only the driven pulley 23 but also the main moving pulley 22 and the flange, so that the portion to be rubbed is reduced. The generation of sound due to rubbing is also reduced.

  As described above with reference to FIG. 13, according to the present invention of the eleventh embodiment, in addition to the effects of the fourth to eighth embodiments, the following effects are further exhibited. That is, since the timing belt 24 is used to reduce (make smaller) not only the driven pulley 23 but also the friction with the driving pulley 22 and the friction with the flange, the portion to be rubbed is further reduced, and as a result, the rubbing is reduced. The effect of reducing the generation of the sound that causes the sound is achieved. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the eleventh embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Furthermore, the timing belt (24) has a tooth slope (35) from the tooth top (33) to the tooth space (34) and a third friction reducing portion (M3) at the tooth top (33), A second friction reducing portion (M2) on the flange facing surface (36) of the belt tooth (32);
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the drive pulley (22),
As a portion that reduces the friction, it is formed including a plurality of grooves (48),
The second friction reducing portion (M2) is a portion that reduces friction with the inner surface (30) of the pair of flanges (28) of the drive pulley (22) and / or the driven pulley (23). Formed
An automatic door device (21) characterized in that it is formed to include a groove (49) as a portion that reduces the friction. "
become.

  Although the timing belt 24 having the third friction reduction portion M3 and the second friction reduction portion M2 is employed in the description of the eleventh embodiment, it is a timing belt (not shown) of only the second friction reduction portion M2. It shall be good.

  Example 12 will be described below with reference to the drawings. FIG. 14 is a diagram relating to a timing belt in which a friction reducing portion including a plurality of concave portions is formed on a tooth slope, and (a) is an enlarged view of a driving pulley (inside circle is an enlarged view of a main part), (b) is a timing It is an expansion perspective view of a belt. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the timing belt 24>
In FIG. 14, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 form the features of the present invention.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature portion (third friction reducing portion M3) of the present invention>
In FIG. 14, the characterizing portion of the present invention of the twelfth embodiment is a third friction reducing portion M3 formed on the beveled surface 35 of the belt tooth 32 in the timing belt 24. The third friction reducing portion M3 is a portion that reduces friction with the pulley tooth slope 45 with respect to the pulley tooth slope 45 of the pulley tooth 26 in the main driving pulley 22, and a plurality of concave portions 50 in the twelfth embodiment. Is formed. In other words, it is configured to include a portion for reducing friction with the pulley tooth flank 45. The illustrated number of the concave portions 50 is an example, and for example, it may be only one in the center in the width direction.

<On the action and effect of the third friction reducing portion M3>
In the above configuration and structure, when the timing belt 24 having the third friction reducing portion M3 including the plurality of recesses 50 is wound around the driving pulley 22 and the driven pulleys 23 of the first to eighth embodiments, The belt teeth 32 mesh with the pulley teeth 26 of the drive pulley 22. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the third friction reducing portion M3 and the pulley tooth slope 45 of the pulley tooth 26 contact. . Since the third friction reducing portion M3 is formed as a portion that reduces the friction between the pulley teeth 26 and the pulley tooth slope 45, the portion to be rubbed is reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  In the 12th embodiment of the present invention, the timing belt 24 is used to reduce (decrease) the friction with the main driving pulley 22 as well as the driven pulley 23, so that the portion to be rubbed is reduced, resulting in the rubbing. Also, the generation of sound that is

  As described above with reference to FIG. 14, according to the present invention of the twelfth embodiment, in addition to the effects of the first to eighth embodiments, the following effects are further exhibited. That is, by employing the timing belt 24 that reduces (makes small) the friction with the driven pulley 22 as well as the driven pulley 23, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub There is an effect that can be reduced. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the twelfth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Further, the timing belt (24) has a tooth slope (35) from the tooth top (33) to the tooth space (34) and a third friction reducing portion (M3) at the tooth top (33).
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the drive pulley (22),
An automatic door device (21) characterized in that the portion for reducing the friction is formed to include a plurality of recesses (50). "
become.

  Example 13 will be described below with reference to the drawings. FIG. 15 is a diagram related to a main moving pulley in which a friction reducing portion including a plurality of grooves is formed on the pulley tooth slope, (a) is an enlarged view of the main moving pulley, (b) is an enlarged perspective view of the main moving pulley. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the drive pulley 22>
In FIG. 15, the main driving pulley 22 has a pulley main body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley main body 25 at equal pitches. Reference numeral 45 in the pulley teeth 26 denotes a pulley tooth slope, and reference numeral 47 denotes a pulley tooth groove. Reference numeral 51 denotes a pulley tip. The pulley teeth 26 are also formed as a part where the features of the present invention are present.

<About the timing belt 24>
In FIG. 15, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature portion (the fourth friction reducing portion M4) of the present invention>
In FIG. 15, the characterizing portion of the 13th embodiment of the present invention is a fourth friction reducing portion M4 formed on the pulley teeth 26 of the main driving pulley 22. The fourth friction reducing portion M4 is a portion for reducing friction with the tooth slope 35 of the belt tooth 32 in the timing belt 24 and includes a plurality of grooves 52 in the thirteenth embodiment. It is formed by In other words, it is configured to include a portion for reducing friction with the tooth flank 35. The illustrated number of grooves 52 is an example, and for example, only one may be provided at the center in the width direction.

<On the action and effect of the fourth friction reducing portion M4>
In the above configuration and structure, when the timing belt 24 is wound around the main driving pulley 22 having the fourth friction reducing portion M4 including the plurality of grooves 52 and the driven pulleys 23 of the first to eighth embodiments, Belt teeth 32 and the pulley teeth 26 of the drive pulley 22 mesh with each other. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 Contact. The fourth friction reducing portion M4 is formed as a portion that reduces the friction between the belt teeth 32 and the tooth slope 35, so that the portion to be rubbed is reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  As described above with reference to FIG. 15, according to the present invention of the thirteenth embodiment, in addition to the effects of the first to eighth embodiments, the following effects are further exhibited. That is, by adopting the driving pulley 22 that reduces (makes small) the friction with the timing belt 24, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub can be reduced. It plays an effect. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the thirteenth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Furthermore, the drive pulley (22) has a fourth friction reducing portion (M4) on the pulley tooth slope (45) from the pulley tip (51) to the pulley tooth groove (47);
The fourth friction reducing portion (M4) is formed in a portion that reduces the friction with the timing belt (24),
An automatic door apparatus (21) characterized by being formed including a plurality of grooves (52) as a portion that reduces the friction. "
become.

  Example 14 will be described below with reference to the drawings. FIG. 16 is a view relating to a main moving pulley in which a friction reducing portion including a plurality of grooves is formed on a pulley tooth slope and a belt opposing surface, (a) is an enlarged view of the main moving pulley, (b) is an enlarged perspective view of the main moving pulley FIG. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the drive pulley 22>
In FIG. 16, the main driving pulley 22 has a pulley main body 25, a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley main body 25 at equal pitches, and a pair of pulley flanges 53 integrated with the pulley main body 25. Reference numeral 45 in the pulley teeth 26 denotes a pulley tooth slope, and reference numeral 47 denotes a pulley tooth groove. Reference numeral 51 denotes a pulley tip. The pulley teeth 26 and the pair of pulley flanges 53 are also formed as a part where the features of the present invention are present.

<About the timing belt 24>
In FIG. 15, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<Features of the Invention (the Fourth Friction-Reduced Portion M4 and the Fifth Friction-Reduced Portion M5)>
In FIG. 16, the characterizing portion of the 14th embodiment of the present invention is the fourth friction reducing portion M4 formed on the pulley teeth 26 of the main driving pulley 22 and the fifth friction formed on the inner surfaces of the pair of pulley flanges 53. There are two types with the reduced portion M5.

  The fourth friction reducing portion M4 is a portion for reducing the friction with the tooth slope 35 of the belt tooth 32 in the timing belt 24 and includes a plurality of grooves 52 in the fourteenth embodiment. Is formed on the pulley tooth slope 45. In other words, it is configured to include a portion for reducing friction with the tooth flank 35.

  On the other hand, the fifth friction reducing portion M5 is a portion that reduces the friction with the pair of flange opposing surfaces 36 of the timing belt 24, and is formed to include the groove 54 in the fourteenth embodiment.

<About the action and effect of the fourth friction reduction portion M4 and the fifth friction reduction portion M5>
In the above configuration and structure, when the timing belt 24 is wound around the main driving pulley 22 having the fourth friction reducing portion M4 including the plurality of grooves 52 and the driven pulleys 23 of the first to eighth embodiments, Belt teeth 32 and the pulley teeth 26 of the drive pulley 22 mesh with each other. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 Contact. The fourth friction reducing portion M4 is formed as a portion that reduces the friction between the belt teeth 32 and the tooth slope 35, so that the portion to be rubbed is reduced. On the other hand, the fifth friction reduction portion M5 is formed as a portion that reduces the friction with the flange facing surface 36 of the timing belt 24 when the timing belt 24 is biased due to some reason, so the rubbing portion is It will be further reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  As described above with reference to FIG. 16, according to the present invention of the fourteenth embodiment, in addition to the effects of the first to eighth embodiments, the following effects are further exhibited. That is, by adopting the driving pulley 22 that reduces (makes small) the friction with the timing belt 24, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub can be reduced. It plays an effect. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the fourteenth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Further, the drive pulley (22) has a fourth friction reducing portion (M4) on the pulley tooth slope (45) from the pulley tip (51) to the pulley tooth groove (47), and the pulley flange (53) Has a fifth friction reducing portion (M5) on the inner surface of the
The fourth friction reducing portion (M4) is formed in a portion that reduces the friction with the timing belt (24),
As a portion that reduces the friction, it is formed including a plurality of grooves (52),
The fifth friction reducing portion (M5) is formed in a portion that reduces the friction with the timing belt (24),
An automatic door device (21) characterized in that it comprises a groove (54) as a portion that reduces the friction. "
become.

  Hereinafter, Example 15 will be described with reference to the drawings. FIG. 17 is a view relating to a main moving pulley in which a friction reducing portion including a slit is formed on pulley teeth, in which (a) is an enlarged view of the main moving pulley, and (b) is an enlarged perspective view of the main moving pulley. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the drive pulley 22>
In FIG. 17, the main driving pulley 22 has a pulley main body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley main body 25 at equal pitches. Reference numeral 45 in the pulley teeth 26 denotes a pulley tooth slope, and reference numeral 47 denotes a pulley tooth groove. Reference numeral 51 denotes a pulley tip. The pulley teeth 26 are also formed as a part where the features of the present invention are present.

<About the timing belt 24>
In FIG. 17, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt main body 31 and an equal pitch on the inner peripheral surface side of the belt main body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature portion (the fourth friction reducing portion M4) of the present invention>
In FIG. 17, the characterizing portion of the present invention of the fifteenth embodiment is a fourth friction reducing portion M4 formed on the pulley teeth 26 of the main driving pulley 22. The fourth friction reducing portion M4 is a portion for reducing friction with the tooth slope 35 of the belt tooth 32 in the timing belt 24 and includes a plurality of slits 55 in the fifteenth embodiment. Are formed on the pulley teeth 26. In other words, it is configured to include a portion for reducing friction with the tooth flank 35. The illustrated number of slits 55 is an example, and may be, for example, only one at the center in the width direction.

<On the action and effect of the fourth friction reducing portion M4>
In the above configuration and structure, when the timing belt 24 is wound around the main driving pulley 22 having the fourth friction reducing portion M4 including the plurality of slits 55 and the driven pulleys 23 of the first to eighth embodiments, Belt teeth 32 and the pulley teeth 26 of the drive pulley 22 mesh with each other. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 Contact. The fourth friction reducing portion M4 is formed as a portion that reduces the friction between the belt teeth 32 and the tooth slope 35, so that the portion to be rubbed is reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  As described above with reference to FIG. 17, according to the present invention of the fifteenth embodiment, the following effects are further achieved in addition to the effects of the first to eighth embodiments. That is, by adopting the driving pulley 22 that reduces (makes small) the friction with the timing belt 24, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub can be reduced. It plays an effect. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the fifteenth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Furthermore, the drive pulley (22) has a fourth friction reducing portion (M4) on the pulley teeth (26),
The fourth friction reducing portion (M4) is formed in a portion that reduces the friction with the timing belt (24),
An automatic door apparatus (21) characterized by being formed including a plurality of slits (55) as a part that reduces the friction. "
become.

  Example 16 will be described below with reference to the drawings. FIG. 18 is a view relating to a main moving pulley in which a friction reducing portion including a plurality of concave portions is formed on a pulley tooth slope, (a) is an enlarged view of the main moving pulley, and (b) is an enlarged perspective view of the main moving pulley. The same reference numerals as in the first embodiment denote the same parts as in the first embodiment, and a detailed description thereof will be omitted.

<About the drive pulley 22>
In FIG. 18, the main driving pulley 22 has a pulley main body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley main body 25 at equal pitches. Reference numeral 45 in the pulley teeth 26 denotes a pulley tooth slope, and reference numeral 47 denotes a pulley tooth groove. Reference numeral 51 denotes a pulley tip. The pulley teeth 26 are also formed as a part where the features of the present invention are present.

<About the timing belt 24>
In FIG. 18, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and has a belt-like endless belt main body 31 and an equal pitch on the inner peripheral surface side of the belt main body 31. And a plurality of belt teeth 32 provided in Reference numeral 33 in the timing belt 24 indicates a tooth tip. Further, reference numeral 34 denotes a tooth groove, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the drive pulley 22 and the driven pulleys 23 of the first to eighth embodiments in a state where tension is applied. When the winding is performed, a compression force is generated on the side of the inner peripheral surface, and a tensile force is generated on the side of the outer peripheral surface. In addition, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, another pulling force is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the drive pulley 22 in the state where the above-described force is generated.

<About the feature portion (the fourth friction reducing portion M4) of the present invention>
In FIG. 18, the characterizing portion of the 16th embodiment of the present invention is a fourth friction reducing portion M4 formed on the pulley teeth 26 of the main driving pulley 22. The fourth friction reducing portion M4 is a portion for reducing friction with the tooth slope 35 of the belt tooth 32 in the timing belt 24 and includes a plurality of recesses 56 in the sixteenth embodiment. Is formed on the pulley tooth slope 45. In other words, it is configured to include a portion for reducing friction with the tooth flank 35. The illustrated number of the concave portions 56 is an example, and for example, only one may be provided at the center in the width direction.

<On the action and effect of the fourth friction reducing portion M4>
In the above configuration and structure, when the timing belt 24 is wound around the main driving pulley 22 having the fourth friction reducing portion M4 including the plurality of concave portions 56 and the driven pulleys 23 of the first to eighth embodiments, Belt teeth 32 and the pulley teeth 26 of the drive pulley 22 mesh with each other. Then, when the driving force from the motor 5 is transmitted to the driving pulley 22 to move the timing belt 24 and perform the opening / closing movement of the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 Contact. The fourth friction reducing portion M4 is formed as a portion that reduces the friction between the belt teeth 32 and the tooth slope 35, so that the portion to be rubbed is reduced. Therefore, it contributes to the generation reduction of the sound which causes rubbing.

  As described above with reference to FIG. 18, according to the present invention of the sixteenth embodiment, the following effects are further achieved in addition to the effects of the first to eighth embodiments. That is, by adopting the driving pulley 22 that reduces (makes small) the friction with the timing belt 24, the portion to be rubbed is further reduced, and as a result, the generation of the sound caused by the rub can be reduced. It plays an effect. As a result, the person passing the automatic door device 21 or the person beside the automatic door device 21 will not feel uncomfortable.

The features of the sixteenth embodiment are summarized as follows. That is,
"Having a door (4) and a drive mechanism (3) for opening and closing the door (4),
The drive mechanism (3) has a motor (5) and a transmission mechanism (6) for transmitting the driving force from the motor (5),
The transmission mechanism (6) includes a driving pulley (22), a timing belt (24) wound around the driving pulley (22), and a driven pulley (23) wound around the timing belt (24).
The driven pulley (23) has a belt hooking surface (29) with which a tooth tip (33) of belt teeth (32) of the timing belt (24) contacts.
In the automatic door device (21),
In the belt hooking surface (29), a scooping portion (K) or a friction reducing portion (M) is formed over the entire circumference of the belt.
The scooping portion (K) is formed in a portion that allows scooping into the tip (33),
The friction reducing portion (M) is formed in a portion that reduces friction with the tip (33),
Furthermore, the drive pulley (22) has a fourth friction reducing portion (M4) on the pulley tooth slope (45) from the pulley tip (51) to the pulley tooth groove (47);
The fourth friction reducing portion (M4) is formed in a portion that reduces the friction with the timing belt (24),
An automatic door device (21) characterized by being formed including a plurality of recesses (56) as a portion that reduces the friction. "
become.

  Besides the above, it goes without saying that the present invention can be variously modified without departing from the scope of the present invention.

  DESCRIPTION OF SYMBOLS 2 ... Base for attachment, 3 ... Drive mechanism, 4 ... Door, 5 ... Motor, 6 ... Transmission mechanism, 10 ... Coupling tool, 21 ... Automatic door apparatus, 22 ... Drive pulley, 23 ... Followed pulley, 24 ... Timing belt , 25: pulley body, 26: pulley tooth, 27: pulley body, 28: flange, 29: belt hooking surface, 30: inner surface, 31: belt body, 32: belt tooth, 33: tooth tip, 34: tooth groove, 35: tooth slope, 36: flange opposite surface, 37: rough shape, 38: uneven shape, 39: lateral groove shape, 40: longitudinal groove, 41: oblique groove, 42: curved groove, 43: mesh groove, 44: oval Shaped recess, 45: pulley tooth slope, 46: groove, 47: pulley tooth groove, 48: groove, 49: groove, 50: recess, 51: pulley tip, 52: groove, 53: Pulley flange, 54: Groove, 55: Slit, 56: Recess, K: Scoop part, M: Friction reduction part, M2: Second friction reduction part, M3: Third friction reduction part, M4: Fourth Friction reduction part, M5 ... fifth friction reduction part

Claims (2)

It has a door and a drive mechanism for opening and closing the door, and the drive mechanism has a motor and a transmission mechanism for transmitting the driving force from the motor, and the transmission mechanism winds around a driving pulley and the driving pulley. An automatic door apparatus, comprising: a timing belt and a driven pulley on which the timing belt is wound, the driven pulley having a belt hooking surface with which a tooth tip of a belt tooth of the timing belt contacts.
The driving pulley includes a pulley body and a plurality of pulley teeth provided at equal pitches on the outer peripheral surface of the pulley body, and is mounted near the motor.
The driven pulley is mounted on the outer periphery of the pulley body of the driven pulley and has a belt-engaging surface with a circular cross-section without the pulley teeth such as the main driving pulley, and is mounted at a distance from the main driving pulley. ,
The belt hooking surface having the circular cross section is formed as a portion where a scooping portion or a friction reducing portion exists over the entire circumference of the belt hooking surface,
While the as-eaten lump portion formed in a portion of the plurality of lateral grooves shaped write No such bite recessed said addendum is a number, wherein as friction reducing unit friction between and teeth destination not bite said addendum is formed on the portion including the grooves or shallow recesses, such as to the small,
Furthermore, the timing belt has a tooth slope from the tooth top to the tooth space and a third friction reducing portion at the tooth top, and has a second friction reducing portion on the flange facing surface of the belt teeth, The third friction reducing portion is formed in a portion that reduces friction with the drive pulley, and the portion that reduces the friction includes a plurality of grooves, while the second portion decreases The friction reducing portion is formed in a portion to reduce friction with the inner surfaces of the drive pulley and / or the pair of flanges of the driven pulley, and the portion including a groove is formed to reduce the friction. automatic door apparatus characterized by being. In the automatic door device according to claim 1,
The driven pulley has a pair of flanges continuous with both sides of the belt hooking surface,
An automatic door apparatus characterized in that the pair of flanges is formed in a portion where the distance between the inner surfaces gradually increases from the proximal end of the flange toward the distal end of the flange.

Images