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JP-7856293-B2 - Rotary actuator

JP7856293B2JP 7856293 B2JP7856293 B2JP 7856293B2JP-7856293-B2

Inventors

  • 鈴木 悠太郎
  • 大塚 拓実

Assignees

  • 株式会社アイエイアイ

Dates

Publication Date
20260511
Application Date
20220411

Claims (5)

  1. Base and, A rotating table is mounted to protrude from the outside of the base mentioned above and is rotatable, A contact portion provided on the above-mentioned rotary table, A stopper member is provided that protrudes from the outside of the base and is installed at any position on the outer circumference of the rotating table, and the contact portion that contacts the stopper member defines the rotation range of the rotating table. It is equipped with, The stopper member described above is fixed by a fixing member. The above-mentioned fixing member can be operated from the side of the rotating table. The stopper member described above is installed on a ring member that is mounted on the outer circumference of the rotating table of the base , A rotary actuator characterized in that , when the fixing by the above-mentioned fixing member is released, the stopper member can slide along the ring member along the entire circumference of the ring member .
  2. In the rotary actuator according to claim 1, A rotary actuator characterized in that the stopper member described above is detachable .
  3. In the rotary actuator according to claim 1, A rotary actuator characterized by having multiple stopper members installed as described above.
  4. In the rotary actuator according to claim 1, A rotary actuator characterized in that the above-mentioned ring member is detachable .
  5. In the rotary actuator according to any one of claims 1 to 4 , The rotary actuator is characterized in that the above-mentioned rotary table is driven by a motor via gears .

Description

This invention relates to a rotary actuator, and more particularly to one that can prevent rattling and variations in stopping position with a simple configuration, and that allows for easy setting of the stopping position. Conventional rotary actuators exist, such as those described in Patent Document 1. The rotary actuator described in Patent Document 1 has an arm fixed to the output shaft and protruding radially from the output shaft. The base of the rotary actuator has a stopper member that the arm contacts, thereby defining the range of motion of the arm. The stopper member is fastened and fixed by bolts. Furthermore, by releasing the fastening with the bolts and moving the stopper member along the elongated hole formed in the base, the swing range of the arm by the stopper member can be set to any position within the range of the elongated hole. Publication number 04-010414 Figure 1(a) is a plan view of the rotary actuator, and Figure 1(b) is a view taken along the line Ib-Ib in Figure 1(a).This figure shows a first embodiment of the present invention, specifically a cross-sectional view taken along line II-II in Figure 1(b).Figures illustrating a first embodiment of the present invention, where Figure 3(a) is a cross-sectional view taken along the line IIIa-IIIa in Figure 1(a), and Figure 3(b) is a cross-sectional view taken along the line IIIb-IIIb in Figure 1(a).This figure shows a first embodiment of the present invention, and is a cross-sectional view taken along line IV-IV of Figure 1(a).This figure shows a first embodiment of the present invention and is an exploded perspective view of a rotary actuator.This figure shows a first embodiment of the present invention, and is an exploded perspective view of the mounting portion of the stopper member of the rotary actuator.Figure 7(a) shows a plan view of the rotary actuator with the rotary table in the origin position, and Figure 7(b) shows a plan view of the rotary actuator with the contact portion of the rotary table in contact with the stopper member.Figure 8(a) shows a plan view of the rotary actuator with the contact portion of the rotary table in contact with the first stopper member, and Figure 8(b) shows a plan view of the rotary actuator with the contact portion of the rotary table in contact with the second stopper member. Hereinafter, a first embodiment of the present invention will be described with reference to Figures 1 to 7. The rotary actuator 1 according to this first embodiment includes a base 3, as shown in Figures 1 and 2. The base 3 is provided with a rotating member housing recess 5, as shown in Figures 3(a) and 3(b), and a bearing 7 is installed in the rotating member housing recess 5. The outer ring 9 of the bearing 7 is interposed and fixed between a stepped portion 11 formed in the rotating member housing recess 5 and a bearing retaining member 13 inserted from the upper side of the rotating member housing recess 5 in Figure 3(a). A rotating member 17 is fixed to the inner ring 15 of the bearing 7. The rotating member 17 consists of an upper element 19 and a lower element 21, and the inner ring 15 of the bearing 7 is interposed and fixed between the upper element 19 and the lower element 21. With this configuration, the rotating member 17 is rotatably installed on the base 3. A hollow sleeve 23 is erected inside the rotating member housing recess 5 in the vertical direction in Figure 3(a), and a through hole 24 is formed in the base 3 in the same axial direction as the sleeve 23 (vertical direction in Figure 3(a)). A through hole 25 is formed in the lower element 21 of the rotating member 17, and the sleeve 23 is inserted into the through hole 25 with a small gap between it and the inner circumferential surface of the through hole 25. A through hole 26 is also formed in the upper element 19, coaxial with the through hole 25. Furthermore, the lower part of the lower element 21 shown in Figure 3(a) is a bevel gear section 27. As shown in Figures 3(b) and 5, a stopper 31 for setting the origin is installed in the recess 5 for housing the rotating member on the base 3. Furthermore, an origin contact pin 33 is installed on the upper element 19 of the rotating member 17. The origin position of the rotating member 17 is defined by the contact of the origin contact pin 33 on the rotating member 17 with the stopper 31. Furthermore, as shown in Figures 2 and 3(a), a bevel gear shaft 45 is rotatably mounted on the base 3 via bearings 41 and 43, oriented in the left-right direction in Figure 3. The right-hand tip of the bevel gear shaft 45 in Figure 3(a) is meshed with the bevel gear portion 27 of the lower element 21 of the rotating member 17. The bevel gears of the bevel gear shaft 45 and the bevel gear section 27 are, for example, bevel gears with curved teeth. A pulley 47 is fixed to the left end of the bevel gear shaft 45 shown in Figure 3(a). Furthermore, as shown in Figure 2, a motor 51 is installed inside the base 3. A pulley