JP2018076644A - Automatic door device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an automatic door device capable of preventing or reducing remarkably the generation of rubbing sound.SOLUTION: An automatic door device 21 includes a door 4 and a drive mechanism 3 that opens and closes the door 4, the drive mechanism 3 having a motor 5 and a transmission mechanism 6 that transmits a driving force from the motor 5. In addition, the transmission mechanism 6 has a primary pulley 22, a timing belt 24 wound around the primary pulley 22, and a driven pulley 23 around which the timing belt 24 is wound, the driven pulley 23 having a belt hooking surface 29 to which a tooth tip 33 of a belt tooth 32 of the timing belt 24 contacts. In such an automatic door device 21, a biting portion K or a friction reducing portion M is formed on the entire surface of the belt hooking surface 29. The biting portion K is formed in such a way that it bites into the tooth tip 33 of the belt tooth 32, while the friction reducing portion M is formed in a portion which reduces the friction with the tooth tip 33.SELECTED DRAWING: Figure 2

Description

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

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

  The driven pulley 8 includes a belt hooking surface 11 and a pair of flanges 12 continuous on 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 the support body 13 fixed to the base 2. In FIG. 20B, reference numeral 14 indicates a belt tooth. Reference numeral 15 indicates a tooth tip, reference numeral 16 indicates a tooth gap, and reference numeral 17 indicates a belt body.

JP 2008-156958 A

  In the above prior art, as the door 4 continues to open and close, rubbing in the rotational direction occurs between the tooth tip 14 of the timing belt 9 and the belt hooking surface 11, and this rubbing causes noise (rubbing). Sound). When the rubbing sound gradually increases and leaks from the automatic door device 1, for example, a passerby is uncomfortable.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic door device capable of preventing the generation of a rubbing sound or reducing the rubbing sound.

  The automatic door device according to claim 1, which has been made to solve the above problems, includes a door and a driving mechanism that opens and closes the door, and the driving mechanism generates a motor and a driving force from the motor. A transmission mechanism for transmitting, the transmission mechanism having a main pulley, a timing belt wound around the main pulley, and a driven pulley around which the timing belt is wound, and the driven pulley is a tooth in the belt teeth of the timing belt. In the automatic door device having a belt hooking surface that comes into contact with the belt, a biting portion or a friction reducing portion is formed on the belt hooking surface over the entire circumference, and the biting portion bites the tooth tip as the biting portion. On the other hand, the friction reducing portion is formed in a portion that reduces friction with the tooth tip.

  According to the present invention having such characteristics, the timing belt is wound around the entire circumference of the belt hooking surface of the driven pulley, the timing belt is wound, and the driving force from the motor is transmitted to the main driving pulley. When the door is opened and closed, the tooth tip of the timing belt belt tooth is caught in the bite part (in other words, the tooth tip is gripped), and as a result The timing belt and the driven pulley start to move in synchronism. That is, the driven pulley rotates in accordance with the movement of the timing belt. As a result, no rubbing in the rotational direction occurs between the tooth tip and the belt hooking surface, and there is no possibility of generation of sound caused by rubbing.

  On the other hand, if the friction reduction part is formed on the belt hooking surface of the driven pulley over the entire circumference, and the door opening and closing movement as described above is continued for a long period of time (for example, if it is used for a long time without replacing the timing belt), the timing The tooth tip of the belt tooth of the belt may not grip the belt hooking surface, thereby causing rubbing (sliding) in the rotational direction between the tooth tip and the belt hooking surface. However, in 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 rubbing portion is reduced, so that the generation of noise caused by rubbing is also reduced. (Rubbing noise is reduced). As a result, the rubbing sound does not leak from the automatic door device, and for example, it does not naturally cause discomfort to passers-by.

  As can be seen from the above, in the present invention, a biting portion or a friction reducing portion may be formed on the belt hooking surface of the driven pulley.

  According to a second aspect of the present invention, in the automatic door device according to the first aspect, the driven pulley has a pair of flanges continuous on both sides of the belt hooking surface, and the pair of flanges is a flange base. It is characterized by being formed in a portion where the interval between the inner surfaces gradually increases from the end toward the flange end.

  According to the present invention having such a feature, even if the timing belt is biased for some reason (even if it is biased to be displaced toward the flange side), the pair of flanges have inner surfaces tapered to each other. As a result, contact with the flange facing surface of the belt teeth is less likely to occur. That is, it is possible to consider the friction with the flange.

  According to a third aspect of the present invention, in the automatic door device according to the second aspect, the timing belt has a second friction reducing portion on a flange facing surface of the belt tooth, and the second friction reducing portion. As described above, it is characterized in that it is formed in a portion that reduces friction with the inner surfaces of the pair of flanges.

  According to the present invention having such characteristics, even if the timing belt in the driven pulley is biased for some reason and the flange facing surface comes into contact with the flange, the friction reducing portion ( The second friction reducing portion) reduces (reduces) the friction with the inner surface of the flange, so that the portion that rubs against the flange is also reduced, and as a result, the generation of noise caused by the friction is also reduced. .

  According to a fourth aspect of the present invention, in the automatic door device according to the first, second, or third aspect, the timing belt has a third friction reduction portion on a tooth slope from the tooth tip to the tooth gap, The third friction reducing portion is formed in a portion that reduces the friction with the main pulley.

  According to the present invention having such a feature, the timing belt that reduces (reduces) friction not only with the driven pulley but also with the main pulley, the portion to be rubbed is reduced, and as a result, the rub is caused. The generation of sound is reduced.

  According to a fifth aspect of the present invention, there is provided the automatic door device according to the fourth aspect, wherein the main pulley is provided with a fourth friction reducing portion on a pulley tooth slope from the pulley tooth tip to the pulley tooth groove or on the pulley tooth. And the fourth friction reducing portion is formed in a portion that reduces the friction with the timing belt.

  According to the present invention having such a feature, a portion that reduces (reduces) friction not only with the driven pulley but also with the main pulley, that is, the fourth friction reducing portion is formed. The portion to be rubbed is reduced, and as a result, the generation of sound due to the rub is also reduced.

  According to the present invention described in claims 1 to 5, there is an effect that it is possible to prevent the generation of a rubbing sound or reduce the rubbing sound, respectively.

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 pulley of (a), (c) is an enlarged view of the driven pulley of (a). It is. It is the figure of the driven pulley in which the biting part including the rough shape was formed, (a) is an enlarged view of the driven pulley (the enlarged view of the main part is in the circle), (b) is a view of the driven pulley from the direction of the arrow A (Example 1) which is a figure. It is a figure of the driven pulley in which the biting part including a fine uneven shape was formed, (a) is an enlarged view of the driven pulley (the enlarged view of the main part in the circle), (b) is a view of the driven pulley from the direction of arrow A. (Example 2). It is a figure of the driven pulley in which the biting part containing many horizontal groove shape was formed, (a) is an enlarged view of a driven pulley (the inside is a principal part enlarged view), (b) is a driven pulley from arrow A direction. (Example 3) which was seen. It is a figure of the driven pulley in which the friction reduction part containing a some vertical groove was formed, (a) is an enlarged view of a driven pulley (the inside is a principal part enlarged view), (b) is a driven pulley from arrow A direction. (Example 4) which was seen. It is a figure which concerns on the friction reduction part of FIG. 5, (a) is a principal part enlarged view, (b) is a schematic diagram which shows the other example of a vertical groove, (c) is the case where a belt hooking surface is formed in circular arc shape FIG. It is a figure of the driven pulley in which the friction reduction part containing a several diagonal groove | channel was formed, (a) is an enlarged view of a driven pulley (the inside is a principal part enlarged view), (b) is an arrow A direction of a driven pulley. (Example 5) seen from FIG. It is a figure of the driven pulley in which the friction reduction part containing a some curved groove was formed, (a) is an enlarged view of a driven pulley (the inside is a principal part enlarged view), (b) is a driven pulley from arrow A direction. (Example 6) which was seen. It is a figure of the driven pulley in which the friction reduction part containing a net groove (grid-like groove | channel) was formed, (a) is an enlarged view of a driven pulley (the inside is an enlarged view of a principal part), (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 a some elliptical recessed part was formed, (a) is an enlarged view of a driven pulley (the inside is a principal part enlarged view), (b) is an arrow A direction of a driven pulley. (Example 8) which was seen from FIG. It is a figure which concerns on the timing belt in which the friction reduction part containing a some groove | channel was formed in the tooth slant surface, (a) is an enlarged view of a main driving pulley (the inside is a principal part enlarged view), (b) is an enlarged view of a timing belt. (Example 9) which is a perspective view. It is a figure which concerns on the timing belt in which the friction reduction part containing a some groove | channel was formed in the tooth inclined surface and the tooth tip, (a) is an enlarged view of a main drive pulley (the inside is a principal part enlarged view), (b) is a timing. (Example 10) which is an expansion perspective view of a belt. It is a figure which concerns on the timing belt in which the friction reduction part containing a some groove | channel was formed in the tooth inclined surface, the tooth tip, and the flange opposing surface, (a) is an enlarged view of the main pulley (the inside is an enlarged view of the main part), (B) is an enlarged perspective view of a timing belt (Example 11). It is a figure which concerns on the timing belt in which the friction reduction part containing a some recessed part was formed in the tooth inclined surface, (a) is an enlarged view of a main pulley (inside of a circle), (b) is an enlarged view of a timing belt (Example 12) which is a perspective view. It is a figure which concerns on the main drive pulley in which the friction reduction part containing a some groove | channel was formed in the pulley tooth inclined surface, (a) is an enlarged view of a main drive pulley, (b) is an enlarged perspective view of a main drive pulley (Example 13) ). It is a figure which concerns on the main drive pulley in which the friction reduction part containing a some groove | channel was formed in the pulley tooth inclined surface and the belt opposing surface, (a) is an enlarged view of a main drive pulley, (b) is an enlarged perspective view of a main drive pulley. (Example 14). It is a figure which concerns on the main drive pulley in which the friction reduction part containing a slit was formed in the pulley tooth, (a) is an enlarged view of a main drive pulley, (b) is an expansion perspective view of a main drive pulley (Example 15). It is a figure which concerns on the main drive pulley in which the friction reduction part containing a some recessed part was formed in the pulley tooth inclined surface, (a) is an enlarged view of a main drive pulley, (b) is an enlarged perspective view of a main drive 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 device includes a door and a drive mechanism that opens and closes the door, and the drive mechanism includes a motor and a transmission mechanism that transmits a driving force from the motor. The transmission mechanism has a main pulley, a timing belt wound around the main pulley, and a driven pulley around which the timing belt is wound, and the driven pulley is a belt hooking surface with which a tooth tip of the belt tooth of the timing belt contacts. Have

  In such an automatic door device, a biting portion or a friction reducing portion is formed on the belt hooking surface over the entire circumference. As a biting part, it is formed in a part which makes a bite bite into the tip of a belt tooth. On the other hand, the friction reducing portion is formed in a portion that reduces (reduces) friction with the tooth tip.

  Embodiment 1 will be described below with reference to the drawings. 1A and 1B are diagrams showing an automatic door device according to the present invention, in which FIG. 1A is a front view of the automatic door device, FIG. 1B is an enlarged view of a main pulley of FIG. 1A, and FIG. 1C is a driven pulley of FIG. FIG. FIG. 2 is a diagram of a driven pulley in which a biting portion including a rough shape is formed, (a) is an enlarged view of the driven pulley (inside the circle is an enlarged view of the main part), and (b) is an arrow indicating the driven pulley. It is the figure seen from A direction.

<About the configuration of the automatic door device 21>
In FIG. 1 (a), the automatic door device 21 is configured such that the door 4 automatically opens and closes in the left-right direction for the passage of people and the loading of objects. The automatic door device 21 includes a base 2 for attachment, 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 when the drive mechanism 3 is driven.

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

<About Figure 1>
Here, a supplementary explanation will be given with respect to FIG. FIG. 1A showing the automatic door device 21 having the above-described configuration is not limited to the first embodiment but is common to the other embodiments 2 to 16. For this reason, the same drawings as those in FIG. 1A are not shown in the drawings after the second embodiment. Moreover, FIG.1 (b) and / or FIG.1 (c) shall be abbreviate | omitted similarly.

<About the main pulley 22>
In FIG. 1B, the main pulley 22 includes a pulley body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley body 25 at an equal pitch. Such a main driving pulley 22 is the same as the main driving pulley 7 of the conventional example (see FIG. 19) in the first embodiment (assumed to be an example. Examples 2 to 12 described later are examples of the conventional example). Although it is the same as the main driving pulley 7, the main driving pulley 22 of Examples 13 to 16 has a slightly different shape because the characteristic portion of the present invention is added. The main pulley 22 is attached in the same state as the conventional example.

<About the driven pulley 23>
In FIG. 1C, the driven pulley 23 has a pulley body 27 and a pair of flanges 28 that are integrated with the pulley body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

  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 attached in the same state as the conventional example. The driven pulley 23 is attached from the beginning of installation of the automatic door device 21 or is attached by replacing the conventional driven pulley 8 (see FIGS. 19 and 20).

  In FIG. 1C and FIG. 2, the pair of flanges 28 are formed as portions that are continuous with both sides of the belt hooking surface 29. In addition, the pair of flanges 28 are formed so as to form an annular flange. The outer surfaces of the pair of flanges 28 are formed so as to be parallel to each other. On the other hand, the inner surfaces 30 of the pair of flanges 28 are formed so as to be non-parallel. That is, it is formed in a tapered portion such that the distance between the inner surfaces 30 gradually increases from the flange base end (base) to the flange tip.

<About the timing belt 24>
1B and 1C, the timing belt 24 has a belt-like endless belt body 31 and a plurality of belt teeth 32 provided at an equal pitch on the inner peripheral surface side of the belt body 31. . Note that the reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. As such a timing belt 24, a known belt is employed. That is, the same as the timing belt 9 of the conventional example (see FIGS. 19 and 20) is adopted (assumed to be an example. Examples 9 to 12 are slightly different because the features of the present invention are added). Will be of the shape).

  The timing belt 24 is wound around the main 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 inner peripheral surface side of the winding portion, and conversely, a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the tip 33 of the belt tooth 32 comes into contact with the belt hooking surface 29 in a state where the force as described above is generated.

<About the characteristic part (biting part K) of the present invention>
In FIG. 2, the characteristic part of the present invention of Example 1 is a biting portion K formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The biting portion K is a portion that causes the tooth tip 33 of the belt tooth 32 of the timing belt 24 to bite into the tooth tip 33. In the first embodiment, the biting portion K has a rough shape 37 (a shape like sandpaper). ). In other words, the shape includes a portion for gripping the tooth tip 33.

  The biting portion K is not only formed in the entire width direction of the belt hooking surface 29 as shown, but may be formed over the entire circumference of the belt hooking surface 29 in one or a plurality of states. To do.

<About the action and effect of the biting part K>
In the configuration and structure described above, the biting portion K including the rough shape 37 is formed around the entire circumference of the belt hooking surface 29 of the driven pulley 23 and the timing belt 24 is wound, and the driving force from the motor 5 is applied to the main driving pulley 22. When the timing belt 24 is transmitted and the door 4 is opened and closed, the tooth tips 33 of the belt teeth 32 of the timing belt 24 bite into the rough shape 37 of the bite portion K (Example 1). Then, about ten tooth tips 33 are gripped), and as a result, the timing belt 24 and the driven pulley 23 start to move in synchronization. That is, the driven pulley 23 rotates in accordance with the movement of the timing belt 24. As a result, no rubbing in the rotational direction occurs between the tooth tip 33 and the belt hooking surface 29, and no generation of sound due to rubbing occurs.

  As described above with reference to FIGS. 1 and 2, according to the present invention of the first embodiment, it is possible to prevent the generation of rubbing noise at the biting portion K including the rough shape 37. Play. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of the first embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) over the entire circumference,
The biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The automatic door device (21) is characterized by being formed to include a rough shape (37) as the portion to be bitten. ]
become.

  Embodiment 2 will be described below with reference to the drawings. FIGS. 3A and 3B are diagrams of a driven pulley in which a biting portion including a fine uneven shape is formed. FIG. 3A is an enlarged view of the driven pulley (enlarged view of the main part in a circle), and FIG. 3B is an arrow A showing the driven pulley. It is the figure seen from the direction. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the driven pulley 23>
In FIG. 3, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and includes a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part (biting part K) of the present invention>
In FIG. 3, the characteristic part of the present invention of Example 2 is a biting portion K formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The biting portion K is a portion that causes the tooth tip 33 of the belt tooth 32 of the timing belt 24 to bite into the tooth tip 33. In the second embodiment, the biting portion K has a fine uneven shape 38 (knurled). ). In other words, the shape includes a portion for gripping the tooth tip 33.

<About the action and effect of the biting part K>
In the above-described configuration and structure, the timing belt 24 is wound around the entire circumference of the belt hooking surface 29 of the driven pulley 23 by forming the biting portion K including the fine uneven shape 38, and the driving force from the motor 5 is applied to the main driving pulley 22. When the timing belt 24 is moved and the door 4 is opened and closed, the tooth tip 33 of the belt tooth 32 of the timing belt 24 bites into the fine irregular shape 38 of the bite portion K (implementation). In Example 2, about ten tooth tips 33 are gripped), and as a result, the timing belt 24 and the driven pulley 23 start to move in synchronization. That is, the driven pulley 23 rotates in accordance with the movement of the timing belt 24. As a result, no rubbing in the rotational direction occurs between the tooth tip 33 and the belt hooking surface 29, and no generation of sound due to rubbing occurs.

  As described above with reference to FIG. 3, according to the present invention of Example 2, there is an effect that it is possible to prevent the generation of rubbing sound at the biting portion K including the fine uneven shape 38. . Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of the second embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) over the entire circumference,
The biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The automatic door device (21) is characterized in that the portion to be bitten is formed to include a fine uneven shape (38). ]
become.

  Embodiment 3 will be described below with reference to the drawings. 4A and 4B are diagrams of a driven pulley formed with biting portions including a large number of transverse grooves. FIG. 4A is an enlarged view of the driven pulley (the enlarged view of the main part is shown in a circle), and FIG. 4B is an arrow of the driven pulley. It is the figure seen from A direction. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the driven pulley 23>
In FIG. 4, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and includes a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part (biting part K) of the present invention>
In FIG. 4, the characterizing portion of the present invention of Example 3 is a biting portion K formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. The biting portion K is a portion that causes the tooth tip 33 of the belt tooth 32 of the timing belt 24 to bite into the tooth tip 33, and is formed to include a large number of lateral groove shapes 39 in the third embodiment. The In other words, the shape includes a portion for gripping the tooth tip 33.

<About the action and effect of the biting part K>
In the above configuration and structure, the timing belt 24 is wound around the entire circumference of the belt hooking surface 29 of the driven pulley 23 by forming the biting portion K including a large number of lateral groove shapes 39, and the driving force from the motor 5 is applied to the main driving pulley. 22, 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 bite into the numerous lateral groove shapes 39 of the bite portion K. (In Example 3, about ten tooth tips 33 are gripped), and as a result, the timing belt 24 and the driven pulley 23 start to move in synchronization. That is, the driven pulley 23 rotates in accordance with the movement of the timing belt 24. As a result, no rubbing in the rotational direction occurs between the tooth tip 33 and the belt hooking surface 29, and no generation of sound due to rubbing occurs.

  As described above with reference to FIG. 4, according to the present invention of Example 3, it is possible to prevent the generation of rubbing noise at the biting portion K including a large number of lateral groove shapes 39. Play. Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of the third embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) over the entire circumference,
The biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The automatic door device (21) is characterized by being formed to include a large number of lateral groove shapes (39) as the portion to be bitten. ]
It becomes.

  Embodiment 4 will be described below with reference to the drawings. FIG. 5 is a diagram of a driven pulley in which a friction reducing portion including a plurality of longitudinal grooves is formed. (A) is an enlarged view of the driven pulley (inside the circle is an enlarged view of the main part), and (b) is an arrow indicating the driven pulley. It is the figure seen from 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 longitudinal groove, and (c) is a circle of the belt hooking surface. It is a principal part enlarged view at the time of forming in arc shape. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the 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 main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part of the present invention (friction reduction part M)>
5 and FIG. 6A, the characteristic part of the present invention of the fourth embodiment is a friction reducing portion M formed over the entire circumference of the belt hooking surface 29 in the driven pulley 23. FIG. The friction reducing portion M is a portion that reduces friction with the tooth tip 33 of the belt tooth 32 of the timing belt 24, and includes a plurality of vertical grooves 40 in the fourth embodiment. Is done. In other words, the shape includes a portion for reducing friction with the tooth tip 33. The plurality of vertical grooves 40 are formed, for example, in a dimensional relationship in the drawing.

  The friction reducing portion M is not limited to a plurality of vertical grooves 40 including square peaks and valleys as schematically shown in FIG. 6B, but includes trapezoidal peaks and valleys, 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 vertical 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 reduction part M>
In the above-described configuration and structure, the friction belt M is formed on the entire circumference of the belt hooking surface 29 of the driven pulley 23, and the timing belt 24 is wound around the timing belt 24, and the driving force from the motor 5 is applied to the main pulley. When the timing belt 24 is moved and the door 4 is opened and closed for a long time (for example, if the timing belt 24 is not used for a long time without being replaced), the tooth tip 33 of the belt teeth 32 of the timing belt 24 is belted. The surface 29 may not be gripped, and as a result, rubbing (sliding) in the rotational direction occurs between the tooth 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 friction with the tooth tip 33, and the rubbed portion is reduced. Occurrence is also reduced (friction noise is reduced). As a result, the rubbing sound does not leak 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, it is possible to reduce the rubbing sound by the friction reducing portion M including the plurality of vertical grooves 40. Play. Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of the fourth embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a friction reducing portion (M) over the entire circumference.
The friction reducing portion (M) is formed in a portion that reduces friction with the tooth tip (33),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including a plurality of longitudinal grooves (40). ]
become.

  Embodiment 5 will be described below with reference to the drawings. 7A and 7B are diagrams of a driven pulley in which a friction reducing portion including a plurality of oblique grooves is formed. FIG. 7A is an enlarged view of the driven pulley (enlarged view of the main part in a circle), and FIG. 7B is a view of the driven pulley. It is the figure seen from the arrow A direction. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the driven pulley 23>
In FIG. 7, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and includes a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part of the present invention (friction reduction part M)>
In FIG. 7, the characteristic part 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 friction with the tooth tip 33 of the belt tooth 32 of the timing belt 24 and includes a plurality of oblique grooves 41 in the fifth embodiment. It is formed. In other words, the shape includes a portion for reducing friction with the tooth tip 33.

<About the action and effect of the friction reduction part M>
In the configuration and structure described above, the friction belt M is formed on the entire circumference of the belt hooking surface 29 of the driven pulley 23 to form a friction reducing portion M including a plurality of oblique grooves 41, and the timing belt 24 is wound around. If the timing belt 24 is transmitted to the pulley 22 and the door 4 is opened and closed for a long period of time (for example, if the timing belt 24 is used for a long time without being replaced), the tooth tip 33 of the belt teeth 32 of the timing belt 24 is changed to the belt. The hooking surface 29 may not be gripped, and as a result, rubbing (sliding) in the rotational direction occurs between the tooth 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 friction with the tooth tip 33, and the rubbed portion is reduced. Occurrence is also reduced (friction noise is reduced). As a result, the rubbing sound does not leak 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, there is an effect that it is possible to reduce the rubbing sound by the friction reducing portion M including the plurality of oblique grooves 41. . Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of the fifth embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a friction reducing portion (M) over the entire circumference.
The friction reducing portion (M) is formed in a portion that reduces friction with the tooth tip (33),
The automatic door device (21) is characterized in that the portion that reduces the friction includes a plurality of oblique grooves (41). ]
become.

  Embodiment 6 will be described below with reference to the drawings. FIGS. 8A and 8B are diagrams of a driven pulley in which a friction reducing portion including a plurality of curved grooves is formed. FIG. 8A is an enlarged view of the driven pulley (enlarged view of the main part in a circle), and FIG. 8B is an arrow of the driven pulley. It is the figure seen from A direction. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the driven pulley 23>
In FIG. 8, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and includes a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part of the present invention (friction reduction part M)>
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 reduction portion M is a portion that reduces friction with the tooth tip 33 of the belt tooth 32 of the timing belt 24 and is formed to include a plurality of curved grooves 42 in the sixth embodiment. Is done. In other words, the shape includes a portion for reducing friction with the tooth tip 33.

<About the action and effect of the friction reduction part M>
In the above configuration and structure, the friction belt M is formed on the entire circumference of the belt hooking surface 29 of the driven pulley 23 to form the friction reducing portion M including the plurality of curved grooves 42, and the timing belt 24 is wound. When the timing belt 24 is moved and the door 4 is opened and closed for a long time (for example, if the timing belt 24 is not used for a long time without being replaced), the tooth tip 33 of the belt teeth 32 of the timing belt 24 is belted. The surface 29 may not be gripped, and as a result, rubbing (sliding) in the rotational direction occurs between the tooth 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 friction with the tooth tip 33, and the rubbed portion is reduced. Occurrence is also reduced (friction noise is reduced). As a result, the rubbing sound does not leak from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIG. 8, according to the present invention of Example 6, there is an effect that the frictional noise can be reduced by the friction reducing portion M including the plurality of curved grooves 42. Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of the sixth embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a friction reducing portion (M) over the entire circumference.
The friction reducing portion (M) is formed in a portion that reduces friction with the tooth tip (33),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed to include a plurality of curved grooves (42). ]
become.

  Embodiment 7 will be described below with reference to the drawings. FIG. 9 is a diagram of a driven pulley in which a friction reducing portion including a mesh groove (lattice-shaped groove) is formed. FIG. 9A is an enlarged view of the driven pulley (inside the circle is an enlarged view of the main part), and FIG. It is the figure which looked at the driven pulley from the arrow A direction. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the driven pulley 23>
In FIG. 9, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and includes a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part of the present invention (friction reduction part M)>
In FIG. 9, the characteristic part 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 of the timing belt 24, and in the seventh embodiment, a net groove (lattice-like groove) 43 is provided. Formed. In other words, the shape includes a portion for reducing friction with the tooth tip 33.

<About the action and effect of the friction reduction part M>
In the above-described configuration and structure, the friction belt M is formed on the entire circumference of the belt hooking surface 29 of the driven pulley 23 to form the friction reducing portion M including the mesh grooves (lattice-like grooves) 43, and the timing belt 24 is wound. If the force is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4 for a long period of time (for example, if the timing belt 24 is used for a long time without being replaced), the tooth tips of the belt teeth 32 of the timing belt 24 In some cases, the belt 33 does not grip the belt hooking surface 29, and thus, rubbing (sliding) in the rotational direction occurs between the tooth 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 friction with the tooth tip 33, and the rubbed portion is reduced. Occurrence is also reduced (friction noise is reduced). As a result, the rubbing sound does not leak 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, the friction noise can be reduced by the friction reducing portion M including the mesh grooves (lattice-shaped grooves) 43. There is an effect. Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of Example 7 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a friction reducing portion (M) over the entire circumference.
The friction reducing portion (M) is formed in a portion that reduces friction with the tooth tip (33),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including a mesh groove (lattice-like groove) (43). ]
become.

  Embodiment 8 will be described below with reference to the drawings. FIG. 10 is a diagram of a driven pulley in which a friction reducing portion including a plurality of elliptical recesses is formed. (A) is an enlarged view of the driven pulley (inside 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. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the driven pulley 23>
In FIG. 10, the driven pulley 23 is a member constituting the automatic door device 21 (see FIG. 1A), and includes a pulley main body 27 and a pair of flanges 28 integrated with the pulley main body 27. The driven pulley 23 has a belt hooking surface 29 as an outer peripheral surface of the pulley body 27. The belt hooking surface 29 is formed as a portion where the timing belt 24 is wound and a portion where the timing belt 24 travels. Furthermore, the belt hooking surface 29 is also formed as a portion where the characteristic portion of the present invention exists over the entire circumference.

<About the characteristic part of the present invention (friction reduction part M)>
In FIG. 10, the characteristic part of the present invention of the eighth 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 friction with the tooth tip 33 of the belt tooth 32 of the timing belt 24, and includes a plurality of oval concave portions 44 in the eighth embodiment. It is formed. In other words, the shape includes a portion for reducing friction with the tooth tip 33. The elliptical recess 44 is not limited to an elliptical shallow recess, and may be, for example, a shallow circular recess.

<About the action and effect of the friction reduction part M>
In the configuration and structure described above, the friction belt M is formed on the entire circumference of the belt hooking surface 29 of the driven pulley 23 and the timing belt 24 is wound around the friction belt M, and the driving force from the motor 5 is applied to the main pulley 22. When the timing belt 24 is moved and the door 4 is opened and closed for a long period of time (for example, when the timing belt 24 is not used for a long time without being replaced), the tooth tips 33 of the belt teeth 32 of the timing belt 24 become the belt hooking surface. 29 may not be gripped, and as a result, rubbing (sliding) in the rotational direction occurs between the tooth 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 friction with the tooth tip 33, and the rubbed portion is reduced. Occurrence is also reduced (friction noise is reduced). As a result, the rubbing sound does not leak from the automatic door device 21 (see FIG. 1A).

  As described above with reference to FIG. 10, according to the present invention of Example 8, there is an effect that the frictional noise can be reduced by the friction reducing portion M including the elliptical concave portion 44. Thereby, a person who passes the automatic door device 21 (see FIG. 1A), a person beside the automatic door device 21, and the like will not be uncomfortable.

The characteristics of Example 7 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a friction reducing portion (M) over the entire circumference.
The friction reducing portion (M) is formed in a portion that reduces friction with the tooth tip (33),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including an elliptical recess (44). ]
become.

  Embodiment 9 will be described below with reference to the drawings. 11A and 11B are diagrams related to a timing belt in which a friction reducing portion including a plurality of grooves is formed on a tooth slope, and FIG. 11A is an enlarged view of a main pulley (enlarged view of a main part in a circle), and FIG. It is an expansion perspective view of a belt. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the timing belt 24>
In FIG. 11, the timing belt 24 is a member constituting the automatic door device 21 (see FIG. 1A), and is 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. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 are formed with the features of the present invention.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the tooth tip 33 of the belt tooth 32 comes into contact with and meshes with the pulley tooth 26 of the main driving pulley 22 in a state where the above force is generated.

<Characteristic part of the present invention (third friction reduction part M3)>
In FIG. 11, the characterizing portion of the present invention of the ninth embodiment is a third friction reducing portion M <b> 3 formed on the tooth inclined 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 inclined surface 45 of the pulley teeth 26 in the main pulley 22 and in the ninth embodiment, a plurality of grooves 46 are provided. Formed. In other words, it is formed to include a portion for reducing friction with the pulley tooth inclined surface 45. The illustrated number of grooves 46 is an example, and for example, only one groove 46 may be provided at the center in the width direction.

<Operation and effect of the third friction reducing portion M3>
In the above configuration and structure, when the timing belt 24 having the third friction reduction portion M3 including the plurality of grooves 46 is wound around the main driving pulley 22 and the driven pulley 23 of Examples 1 to 8, at this time, the timing belt 24 The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the third friction reducing portion M3 and the pulley tooth slope 45 of the pulley teeth 26 come into contact with each other. . 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 inclined surface 45, the rubbed portion is reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  In the present invention of the ninth embodiment, since the timing belt 24 that reduces (reduces) the friction with not only the driven pulley 23 but also the main driving pulley 22 is adopted, the rubbing portion is reduced, and as a result, the rubbing is caused. The generation of sound is reduced.

  As described above with reference to FIG. 11, according to the present invention of Example 9, the following effects are further exhibited in addition to the effects of Examples 1 to 8. That is, since the timing belt 24 that reduces (reduces) not only the driven pulley 23 but also the main pulley 22 is used, the rubbed portion is further reduced, and as a result, the generation of noise caused by the rub is generated. The effect that it can also be reduced is produced. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of the ninth embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Further, the timing belt (24) has a third friction reducing portion (M3) on a tooth slope (35) from the tooth tip (33) to the tooth groove (34),
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the main pulley (22),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed to include a plurality of grooves (46). ]
become.

  Embodiment 10 will be described below with reference to the drawings. FIG. 12 is a view relating to a timing belt in which a friction reducing portion including a plurality of grooves is formed on the tooth slope and the tooth tip, and (a) is an enlarged view of the main pulley (the inside is an enlarged view of the main part), (b) ) Is an enlarged perspective view of the timing belt. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is 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. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 are formed with the features of the present invention.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristic part of the present invention (third friction reduction part M3)>
In FIG. 12, the characteristic part of the present invention of the tenth embodiment is a third friction reducing portion M <b> 3 formed on the tooth inclined surface 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 friction between the pulley tooth inclined surface 45 and the pulley tooth groove 47 of the pulley tooth 26 in the main pulley 22 with the pulley tooth inclined surface 45 and the pulley tooth groove 47. In the tenth embodiment, a plurality of grooves 48 are formed. In other words, it is configured to include a portion for reducing friction with the pulley tooth inclined surface 45 and the pulley tooth groove 47. The illustrated number of grooves 48 is an example, and for example, only one groove may be provided at the center in the width direction.

<Operation 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 main pulley 22 and the driven pulley 23 of Examples 1 to 8, the timing belt 24 The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the third friction reducing portion M3, the pulley tooth slope 45 of the pulley teeth 26, and the pulley tooth groove. 47 comes into contact. The third friction reducing portion M3 is formed as a portion that reduces the friction with the pulley tooth inclined surface 45 and the pulley tooth groove 47 of the pulley teeth 26, so that the rubbed portion is reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  In the present invention of the tenth embodiment, the timing belt 24 that reduces (reduces) the friction with not only the driven pulley 23 but also the main driving pulley 22 is adopted, so that the rubbing portion is reduced, and as a result, the rubbing is caused. The generation of sound is reduced.

  As described above with reference to FIG. 12, according to the present invention of the tenth embodiment, the following effects are further exhibited in addition to the effects of the first to eighth embodiments. That is, since the timing belt 24 that reduces (reduces) not only the driven pulley 23 but also the main pulley 22 is used, the rubbed portion is further reduced, and as a result, the generation of noise caused by the rub is generated. The effect that it can also be reduced is produced. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of the tenth embodiment are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Furthermore, the timing belt (24) has a third friction reducing part (M3) on the tooth slope (35) and the tooth tip (33) from the tooth tip (33) to the tooth groove (34),
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the main pulley (22),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed to include a plurality of grooves (48). ]
become.

  Hereinafter, Example 11 will be described with reference to the drawings. FIG. 13 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-facing surface, and (a) is an enlarged view of a main pulley (the main portion is enlarged in a circle). (B) is an enlarged perspective view of the timing belt. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is 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 is 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. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 are formed with the features of the present invention.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 4 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristics of the Present Invention (Third Friction Reduction Part M3 and Second Friction Reduction Part M2)>
In FIG. 13, the characterizing portion of the present invention of the tenth embodiment is formed on the third friction reducing portion M <b> 3 formed on the tooth inclined surface 35 of the belt tooth 32 in the timing belt 24 and the flange facing surface 36 of the belt tooth 32. And the second friction reducing portion M2.

  The third friction reducing portion M3 is a portion that reduces the friction with the pulley tooth inclined surface 45 of the pulley teeth 26 in the main pulley 22 and in the embodiment 11, a plurality of grooves 46 are provided. Formed. In other words, it is formed to include a portion for reducing friction with the pulley tooth inclined surface 45.

  On the other hand, when the pair of flanges (not shown) is formed on the main pulley 22, the second friction reducing portion M2 is a portion that reduces friction with the inner surfaces of the pair of flanges. A portion that reduces friction with the inner surface 30 of the pair of flanges 28 (see, for example, FIGS. 5 and 6) in the driven pulleys 23 of 4 to 8 is a portion that reduces the friction with the inner surface 30. Formed.

<Operations and effects of the third friction reducing portion M3 and the second friction reducing portion M2>
In the above-described 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 used as the main driving pulley 22 and the fourth to eighth embodiments. In this case, the belt teeth 32 of the timing belt 24 and the pulley teeth 26 of the main driving pulley 22 mesh with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the third friction reducing portion M3 and the pulley tooth slope 45 of the pulley teeth 26 come into contact with each other. . 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 inclined surface 45, the rubbed portion is reduced. On the other hand, when the timing belt 24 is biased for some reason, the second friction reducing portion M2 is formed, for example, as a portion that reduces friction with one of the flanges of the main pulley 22, so that the portion to be rubbed. Is further reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  In the present invention of Example 11, since the timing belt 24 that reduces (reduces) friction with not only the driven pulley 23 but also the main driving pulley 22 and the flange is adopted, the rubbing portion is reduced, and as a result, Generation of noise caused by rubbing is also reduced.

  As described above with reference to FIG. 13, according to the present invention of Example 11, the following effects are further exhibited in addition to the effects of Examples 4 to 8. That is, since the timing belt 24 that reduces (reduces) friction not only with the driven pulley 23 but also with the main pulley 22 and with the flange is employed, the rubbing portion is further reduced, and as a result, the rubbing occurs. There is an effect that the generation of the causative sound can be reduced. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of Example 11 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Furthermore, the timing belt (24) has a third friction reducing portion (M3) on the tooth slope (35) and the tooth tip (33) from the tooth tip (33) to the tooth groove (34), and 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 main pulley (22),
The portion that reduces the friction 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 main pulley (22) and / or the driven pulley (23). Formed,
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including a groove (49). ]
become.

  In the description of the eleventh embodiment, the timing belt 24 having the third friction reducing portion M3 and the second friction reducing portion M2 is employed. However, the timing belt (not shown) includes only the second friction reducing portion M2. It may be.

  Embodiment 12 will be described below with reference to the drawings. 14A and 14B are diagrams related to a timing belt in which a friction reducing portion including a plurality of concave portions is formed on a tooth inclined surface. FIG. It is an expansion perspective view of a belt. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is 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 is 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. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface. The belt teeth 32 are formed with the features of the present invention.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristic part of the present invention (third friction reduction part M3)>
In FIG. 14, the characterizing portion of the present invention of the twelfth embodiment is a third friction reducing portion M <b> 3 formed on the tooth inclined 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 inclined surface 45 of the pulley teeth 26 in the main pulley 22, and in the twelfth embodiment, a plurality of concave portions 50 are provided. Formed. In other words, it is formed to include a portion for reducing friction with the pulley tooth inclined surface 45. In addition, the number of illustration of the recessed part 50 is an example, for example, it shall be only one in the center of the width direction.

<Operation and effect of the third friction reducing portion M3>
In the above configuration and structure, when the timing belt 24 having the third friction reduction portion M3 including the plurality of concave portions 50 is wound around the main driving pulley 22 and the driven pulley 23 of Examples 1 to 8, at this time, the timing belt 24 The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the third friction reducing portion M3 and the pulley tooth slope 45 of the pulley teeth 26 come into contact with each other. . 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 inclined surface 45, the rubbed portion is reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  In the present invention of the twelfth embodiment, the timing belt 24 that reduces (reduces) friction not only with the driven pulley 23 but also with the main driving pulley 22 is adopted, so that the rubbing portion is reduced, and as a result, the rubbing is caused. The generation of sound is reduced.

  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, since the timing belt 24 that reduces (reduces) not only the driven pulley 23 but also the main pulley 22 is used, the rubbed portion is further reduced, and as a result, the generation of noise caused by the rub is generated. The effect that it can also be reduced is produced. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of Example 12 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Furthermore, the timing belt (24) has a third friction reducing part (M3) on the tooth slope (35) and the tooth tip (33) from the tooth tip (33) to the tooth groove (34),
The third friction reducing portion (M3) is formed in a portion that reduces the friction with the main pulley (22),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including a plurality of recesses (50). ]
become.

  Embodiment 13 will be described below with reference to the drawings. FIGS. 15A and 15B are diagrams relating to a main driving pulley in which a friction reducing portion including a plurality of grooves is formed on a pulley tooth inclined surface. FIG. 15A is an enlarged view of the main driving pulley, and FIG. 15B is an enlarged perspective view of the main driving pulley. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the main pulley 22>
In FIG. 15, the main driving pulley 22 has a pulley body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley body 25 at an equal pitch. In the pulley teeth 26, reference numeral 45 indicates a pulley tooth slope, and reference numeral 47 indicates a pulley tooth groove. Reference numeral 51 indicates a pulley tooth tip. The pulley teeth 26 are also formed as portions 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 is 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. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristics of the Present Invention (Fourth Friction Reduction Part M4)>
In FIG. 15, the characterizing portion of the present invention of the thirteenth embodiment is a fourth friction reducing portion M <b> 4 formed on the pulley teeth 26 in the main driving pulley 22. The fourth friction reducing portion M4 is a portion that reduces friction with the tooth slope 35 of the belt tooth 32 of the timing belt 24, and includes a plurality of grooves 52 in the thirteenth embodiment. Formed with. In other words, the shape includes a portion for reducing friction with the tooth slope 35. The illustrated number of the grooves 52 is an example, and for example, only one groove 52 may be provided at the center in the width direction.

<Operation / Effect of Fourth Friction Reduction Part M4>
In the above configuration and structure, when the timing belt 24 is wound around the main pulley 22 having the fourth friction reduction portion M4 including the plurality of grooves 52 and the driven pulley 23 of the first to eighth embodiments, at this time, the timing belt 24 The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 are obtained. Touch. Since the fourth friction reducing portion M4 is formed as a portion that reduces the friction with the tooth inclined surface 35 of the belt tooth 32, the rubbed portion is reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  As described above with reference to FIG. 15, according to the present invention of the thirteenth embodiment, the following effects are further exhibited in addition to the effects of the first to eighth embodiments. That is, since the main pulley 22 that reduces (reduces) the friction with the timing belt 24 is adopted, the rubbing portion is further reduced, and as a result, the generation of noise caused by the rubbing can also be reduced. There is an effect. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of Example 13 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Further, the main pulley (22) has a fourth friction reduction part (M4) on the pulley tooth slope (45) from the pulley tooth tip (51) to the pulley tooth groove (47),
The fourth friction reducing portion (M4) is formed in a portion that reduces friction with the timing belt (24),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed to include a plurality of grooves (52). ]
become.

  Embodiment 14 will be described below with reference to the drawings. FIGS. 16A and 16B are views of a main driving pulley in which a friction reducing portion including a plurality of grooves is formed on the pulley tooth inclined surface and the belt facing surface, FIG. 16A is an enlarged view of the main driving pulley, and FIG. 16B is an enlarged perspective view of the main driving pulley. FIG. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the main pulley 22>
In FIG. 16, the main pulley 22 includes a pulley body 25, a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley body 25 at an equal pitch, and a pair of pulley flanges 53 integrated with the pulley body 25. In the pulley teeth 26, reference numeral 45 indicates a pulley tooth slope, and reference numeral 47 indicates a pulley tooth groove. Reference numeral 51 indicates a pulley tooth tip. The pulley teeth 26 and the pair of pulley flanges 53 are also formed as portions where the characteristic portions of the present invention exist.

<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 is 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. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristics of the Present Invention (Fourth Friction Reduction Part M4 and Fifth Friction Reduction Part M5)>
In FIG. 16, the characteristic part of the present invention of the fourteenth embodiment is that the fourth friction reducing portion M <b> 4 formed on the pulley teeth 26 in 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, the reduction part M5.

  The fourth friction reducing portion M4 is a portion that reduces friction with the tooth slope 35 of the belt tooth 32 of the timing belt 24, and includes a plurality of grooves 52 in the fourteenth embodiment. Thus, the pulley tooth slope 45 is formed. In other words, the shape includes a portion for reducing friction with the tooth slope 35.

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

<Operation / Effect of Fourth Friction Reduction Part M4 and Fifth Friction Reduction Part M5>
In the above configuration and structure, when the timing belt 24 is wound around the main pulley 22 having the fourth friction reduction portion M4 including the plurality of grooves 52 and the driven pulley 23 of the first to eighth embodiments, at this time, the timing belt 24 The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 are obtained. Touch. Since the fourth friction reducing portion M4 is formed as a portion that reduces the friction with the tooth inclined surface 35 of the belt tooth 32, the rubbed portion is reduced. On the other hand, the fifth friction reducing portion M5 is formed as a portion that reduces friction with the flange facing surface 36 of the timing belt 24 when the timing belt 24 is biased for some reason. Further reduction is achieved. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  As described above with reference to FIG. 16, according to the present invention of Example 14, the following effects are further exhibited in addition to the effects of Examples 1-8. That is, since the main pulley 22 that reduces (reduces) the friction with the timing belt 24 is adopted, the rubbing portion is further reduced, and as a result, the generation of noise caused by the rubbing can also be reduced. There is an effect. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of Example 14 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Further, the main pulley (22) has a fourth friction reduction portion (M4) on a pulley tooth slope (45) from the pulley tooth tip (51) to the pulley tooth groove (47), and a pulley flange (53). A fifth friction reducing portion (M5) on the inner surface of
The fourth friction reducing portion (M4) is formed in a portion that reduces friction with the timing belt (24),
The portion that reduces the friction 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),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including a groove (54). ]
become.

  Embodiment 15 will be described below with reference to the drawings. FIGS. 17A and 17B are views relating to a main driving pulley in which a friction reducing portion including a slit is formed on a pulley tooth. FIG. 17A is an enlarged view of the main driving pulley, and FIG. 17B is an enlarged perspective view of the main driving pulley. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the main pulley 22>
In FIG. 17, the main pulley 22 has a pulley body 25 and a plurality of pulley teeth 26 provided on the outer peripheral surface of the pulley body 25 at an equal pitch. In the pulley teeth 26, reference numeral 45 indicates a pulley tooth slope, and reference numeral 47 indicates a pulley tooth groove. Reference numeral 51 indicates a pulley tooth tip. The pulley teeth 26 are also formed as portions 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 body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristics of the Present Invention (Fourth Friction Reduction Part M4)>
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 in the main driving pulley 22. The fourth friction reducing portion M4 is a portion that reduces 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. Thus, the pulley teeth 26 are formed. In other words, the shape includes a portion for reducing friction with the tooth slope 35. The number of slits 55 shown is an example, and it may be only one at the center in the width direction, for example.

<Operation / Effect of Fourth Friction Reduction Part M4>
In the above configuration and structure, when the timing belt 24 is wound around the main pulley 22 having the fourth friction reduction portion M4 including the plurality of slits 55 and the driven pulley 23 of Examples 1 to 8, the timing belt 24 The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 are obtained. Touch. Since the fourth friction reducing portion M4 is formed as a portion that reduces the friction with the tooth inclined surface 35 of the belt tooth 32, the rubbed portion is reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  As described above with reference to FIG. 17, according to the present invention of Example 15, the following effects are further exhibited in addition to the effects of Examples 1-8. That is, since the main pulley 22 that reduces (reduces) the friction with the timing belt 24 is adopted, the rubbing portion is further reduced, and as a result, the generation of noise caused by the rubbing can also be reduced. There is an effect. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of Example 13 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Further, the main pulley (22) has a fourth friction reduction part (M4) on the pulley teeth (26),
The fourth friction reducing portion (M4) is formed in a portion that reduces friction with the timing belt (24),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed including a plurality of slits (55). ]
become.

  Embodiment 16 will be described below with reference to the drawings. 18A and 18B are diagrams relating to a main driving pulley in which a friction reducing portion including a plurality of concave portions is formed on a pulley tooth slope, wherein FIG. 18A is an enlarged view of the main driving pulley and FIG. 18B is an enlarged perspective view of the main driving pulley. Note that the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

<About the main pulley 22>
In FIG. 18, the main pulley 22 has a pulley body 25 and a plurality of pulley teeth 26 provided at an equal pitch on the outer peripheral surface of the pulley body 25. In the pulley teeth 26, reference numeral 45 indicates a pulley tooth slope, and reference numeral 47 indicates a pulley tooth groove. Reference numeral 51 indicates a pulley tooth tip. The pulley teeth 26 are also formed as portions 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 body 31 and an equal pitch on the inner peripheral surface side of the belt body 31. And a plurality of belt teeth 32. Reference numeral 33 in the timing belt 24 indicates a tooth tip. Reference numeral 34 denotes a tooth gap, reference numeral 35 denotes a tooth slope, and reference numeral 36 denotes a flange facing surface.

  The timing belt 24 is wound around the main pulley 22 and the driven pulley 23 of Examples 1 to 8 in a state where tension is applied. When the winding is performed, a compression force is generated on the inner peripheral surface side, and a tensile force is generated on the outer peripheral surface side. Further, when the driving force from the motor 5 (see FIG. 1A) acts on the timing belt 24, a pulling force different from the above is generated. In the timing belt 24, the belt teeth 32 come into contact with and mesh with the pulley teeth 26 of the main pulley 22 in the state where the force as described above is generated.

<Characteristics of the Present Invention (Fourth Friction Reduction Part M4)>
In FIG. 18, the characterizing portion of the present invention of the sixteenth embodiment is a fourth friction reducing portion M <b> 4 formed on the pulley teeth 26 in the main driving pulley 22. The fourth friction reducing portion M4 is a portion that reduces the 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. Thus, the pulley tooth slope 45 is formed. In other words, the shape includes a portion for reducing friction with the tooth slope 35. In addition, the number of illustration of the recessed part 56 is an example, for example, it shall be only one in the center of the width direction.

<Operation / Effect of Fourth Friction Reduction Part M4>
In the above configuration and structure, when the timing belt 24 is wound around the main pulley 22 having the fourth friction reduction portion M4 including the plurality of concave portions 56 and the driven pulley 23 of Examples 1 to 8, the timing belt 24 is The belt teeth 32 and the pulley teeth 26 of the main driving pulley 22 are engaged with each other. When the driving force from the motor 5 is transmitted to the main pulley 22 and the timing belt 24 is moved to open and close the door 4, the fourth friction reducing portion M4 and the tooth slope 35 of the belt teeth 32 in the timing belt 24 are obtained. Touch. Since the fourth friction reducing portion M4 is formed as a portion that reduces the friction with the tooth inclined surface 35 of the belt tooth 32, the rubbed portion is reduced. Therefore, it contributes to a reduction in the generation of sound caused by rubbing.

  As described above with reference to FIG. 18, according to the present invention of Example 16, the following effects are further exhibited in addition to the effects of Examples 1 to 8. That is, since the main pulley 22 that reduces (reduces) the friction with the timing belt 24 is adopted, the rubbing portion is further reduced, and as a result, the generation of noise caused by the rubbing can also be reduced. There is an effect. Thereby, unpleasant feeling is not given to the person who passes the automatic door apparatus 21, the person who is beside the automatic door apparatus 21, and the like.

The characteristics of Example 13 are summarized as follows. That is,
“It has 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 a driving force from the motor (5).
The transmission mechanism (6) has a main pulley (22), a timing belt (24) wound around the main pulley (22), and a driven pulley (23) around which the timing belt (24) is wound.
The driven pulley (23) has a belt hooking surface (29) with which the tooth tip (33) of the belt tooth (32) of the timing belt (24) contacts.
In the automatic door device (21),
The belt hooking surface (29) is formed with a biting portion (K) or a friction reducing portion (M) over the entire circumference.
While the biting part (K) is formed in a part that allows bites to bite into the tooth tip (33),
The friction reducing part (M) is formed in a part that reduces friction with the tooth tip (33),
Further, the main pulley (22) has a fourth friction reduction part (M4) on the pulley tooth slope (45) from the pulley tooth tip (51) to the pulley tooth groove (47),
The fourth friction reducing portion (M4) is formed in a portion that reduces friction with the timing belt (24),
The automatic door device (21) is characterized in that the portion that reduces the friction is formed to include a plurality of recesses (56). ]
become.

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

  DESCRIPTION OF SYMBOLS 2 ... Base for attachment, 3 ... Drive mechanism, 4 ... Door, 5 ... Motor, 6 ... Transmission mechanism, 10 ... Connection tool, 21 ... Automatic door apparatus, 22 ... Main drive pulley, 23 ... Drive 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 facing surface, 37 ... rough shape, 38 ... uneven shape, 39 ... transverse groove shape, 40 ... longitudinal groove, 41 ... oblique groove, 42 ... curved groove, 43 ... mesh groove, 44 ... ellipse Recessed part 45: Pulley slope, 46 ... Groove, 47 ... Pulley tooth groove, 48 ... Groove, 49 ... Groove, 50 ... Recessed part, 51 ... Pulley tooth tip, 52 ... Groove, 53 ... Pulley flange, 54 ... groove, 55 ... slit, 56 ... recess, K ... biting portion, M ... friction reducing portion, M2 ... second friction reducing portion, M3 ... third friction reducing portion, M4 ... fourth Friction reduction part, M5 ... Fifth friction reduction part

The automatic door device according to claim 1, which has been made to solve the above problems, includes a door and a driving mechanism that opens and closes the door, and the driving mechanism generates a motor and a driving force from the motor. A transmission mechanism for transmitting, the transmission mechanism having a main pulley, a timing belt wound around the main pulley, and a driven pulley around which the timing belt is wound, and the driven pulley is a tooth in the belt teeth of the timing belt. In the automatic door device having a belt hooking surface that comes into contact, the main pulley has a pulley main body and a plurality of pulley teeth provided at an equal pitch on the outer peripheral surface of the pulley main body, and is attached near the motor. The driven pulley is an outer peripheral surface of the pulley body in the driven pulley and is not provided with the pulley teeth like the main driving pulley. Have the belt receiving surface side circular mounted at a position away from the main driving pulley, said belt receiving surface of the circular cross section is formed as a part to the presence of eating addition unit or the friction reducing unit over the entire circumference, 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 It is characterized in that it is formed in a part including a groove or a shallow concave part that reduces the amount of

Claims (5)

A drive mechanism that opens and closes the door; the drive mechanism includes a motor and a transmission mechanism that transmits a driving force from the motor; and the transmission mechanism is wound around the main pulley and the main pulley. An automatic door device having a belt and a driven pulley around which the timing belt is wound, and the driven pulley has a belt hooking surface with which a tooth tip of a belt tooth of the timing belt contacts;
The belt hooking surface is formed with a biting portion or a friction reducing portion over the entire circumference,
The biting part is formed in a part that allows bite to bite into the tooth tip, while the friction reducing part is formed in a part that reduces friction with the tooth tip. Automatic door device to do. The automatic door device according to claim 1,
The driven pulley has a pair of flanges continuous on both sides of the belt hanging surface,
The automatic door device is characterized in that the pair of flanges are formed in a portion where the interval between the inner surfaces gradually increases from the flange base end toward the flange tip end. The automatic door device according to claim 2,
The timing belt has a second friction reducing portion on a flange-facing surface of the belt tooth;
The automatic door device, wherein the second friction reducing portion is formed in a portion that reduces friction with the inner surfaces of the pair of flanges. In the automatic door device according to claim 1, 2, or 3,
The timing belt has a third friction reduction portion on a tooth slope from the tooth tip to the tooth gap,
The automatic door device characterized in that the third friction reducing portion is formed in a portion that reduces friction with the main pulley. The automatic door device according to claim 4,
The main drive pulley has a fourth friction reduction part on the pulley tooth slope from the pulley tooth tip to the pulley tooth groove, or on the pulley tooth,
4. The automatic door device according to claim 4, wherein the fourth friction reducing portion is formed in a portion that reduces friction with the timing belt.

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