JP6591869B2 - Fountain equipment - Google Patents

Description

  The present invention relates to fountain technology.

  Examples of the fountain device include a uniaxial drive type device that controls the operation direction of a nozzle that discharges water by uniaxial rotation, and a biaxial drive type device that controls the operation direction by biaxial rotation.

  Patent No. 4420781 (patent document 1) is mentioned as a prior art example regarding a biaxial drive type fountain device. Patent Document 1 describes the following as a fountain device. The first axis is arranged in the first direction, and the second axis is arranged so as to intersect three-dimensionally in the second direction orthogonal to the first axis. A nozzle is connected to the second shaft. The first shaft has a first drive unit that rotates around the first shaft. The second axis has a second drive unit that rotates around the second axis. As the first axis rotates, the second axis moves to rotate about the first axis.

Japanese Patent No. 4420781

  In a conventional biaxially driven fountain device such as Patent Document 1, for example, a second drive unit is disposed at one end on the second axis with respect to an orthogonal point between the first axis and the second axis. . In this configuration, when the second axis moves with the rotation of the first axis, the second drive unit, the wiring connected to the second drive unit, the pipe connected to the second axis, etc. It will move. Therefore, in this configuration, a space and a mechanism for moving those portions within a predetermined range are required. That is, in this configuration, a relatively large space is occupied as a region including orthogonal points. Therefore, the fountain device becomes large. Moreover, the load is repeatedly applied to the wiring due to the operation of the fountain, and there is a risk of disconnection.

  In addition, since the first driving unit needs to be driven to rotate including the second driving unit of the second axis together with the rotation driving of the first axis, a relatively large driving force and driving power are required. To do.

  Moreover, the conventional biaxial drive type fountain device like patent document 1 is the position away on the 2nd axis from the orthogonal point of a 1st axis | shaft and a 2nd axis | shaft, for example, a 2nd drive part and an other side The nozzle is connected to the position of. Therefore, the direction of the nozzle and the fountain by the biaxial rotation control varies depending on the viewing direction when viewed from the viewing direction of the viewer. Further, the direction of the nozzle and the range of the rotation angle are not symmetrical with respect to the vertical axis. It is difficult to align the direction and shape of the fountain, including when multiple fountain devices are installed. That is, the prior art is also disadvantageous in terms of the performance capability of the fountain.

  An object of the present invention relates to a biaxial drive type fountain device, which can reduce the occupied space in the region near the orthogonal point of the biaxial axis and the nozzle and reduce the risk of disconnection of the wiring from the drive unit, It is to provide a technology that can be miniaturized. Another object of the present invention is to provide a technique capable of relatively reducing the biaxial driving force and the like. Another object of the present invention is to provide a technique capable of ensuring a wide range of nozzle directions and rotation angles and enhancing the performance performance of the fountain when viewed from the viewer's line of sight.

  A typical embodiment of the present invention is a fountain device and has the following configuration.

  A fountain device according to an embodiment is a fountain device in which the direction of a nozzle that discharges water by biaxial rotational drive is variable, and is arranged along a first axis extending in a first direction. A shaft portion, a second shaft portion disposed along a second axis extending in a second direction intersecting the first direction, and a nozzle holder that supports the nozzle rotatably with respect to the second shaft A frame, a frame that rotatably supports the nozzle holding portion with respect to the first shaft, a first shaft drive portion for rotationally driving the first shaft, and a first shaft for rotationally driving the second shaft. A two-axis drive unit, wherein the first axis drive unit and the second axis drive unit are fixed with respect to the frame, the first axis drive unit rotationally drives the nozzle holding unit, and The second shaft drive unit rotationally drives the nozzle via a cross shaft power transmission mechanism.

  According to a typical embodiment of the present invention, with respect to a biaxial drive type fountain device, the occupied space in the area near the orthogonal point of the biaxial axis and the nozzle can be reduced, and the risk of disconnection of the wiring from the drive unit The fountain device can be reduced in size while reducing the above. According to a typical embodiment of the present invention, biaxial driving power and the like can be made relatively small. According to a typical embodiment of the present invention, a wide range of nozzle directions and rotation angles can be ensured, and the fountain rendering ability when viewed from the viewer's line of sight can be enhanced.

It is the perspective view seen from the front which shows the structure of the fountain apparatus of embodiment of this invention. It is the perspective view seen from the back which shows the composition of the fountain device in an embodiment. It is the top view seen from the right side which shows the structure of the fountain apparatus in embodiment. It is the top view seen from the front which shows the composition of the fountain device in an embodiment. It is the top view seen from the upper surface which shows the structure of the fountain apparatus in embodiment. It is the top view seen from the front which shows detailed structures, such as a 1st axis | shaft drive part in embodiment. It is the top view seen from the upper surface which shows detailed structures, such as a 2nd axial part, in embodiment. It is the top view seen from the right side surface which shows schematic arrangement | positioning of +45 degree rotation state of the 1st axis | shaft in embodiment. It is the top view seen from the front which shows schematic arrangement | positioning of +45 degree rotation state of the 2nd axis | shaft in embodiment. It is a figure which shows the functional block structure of the control part of a fountain apparatus in embodiment. It is a figure which shows the example of the installation state and rotation angle range of a plurality of fountain devices in a comparative example. It is a figure which shows the example of the installation state and rotation angle range of a plurality of fountain devices in an embodiment. It is the top view seen from the front which shows the composition of the fountain device of other embodiments.

  A fountain device according to an embodiment of the present invention will be described in detail with reference to FIGS. Note that components having the same function are denoted by the same reference symbols throughout the drawings for describing the embodiment, and the repetitive description thereof will be omitted.

[Fountain device (1)]
Drawing 1 is a perspective view seen from the front which shows the composition of the whole fountain device of an embodiment. The fountain device of the embodiment is of a biaxial drive type and includes a control unit 100. In FIG. 1, the structural example of the fountain system including the element connected to a fountain apparatus is also shown. The fountain system includes a fountain device, a pump 90, and a host system 110. The control unit 100 and the pump 90 are connected to the host system 110. The first axis drive unit 11 and the second axis drive unit 21 are connected to the control unit 100 through wiring. The water supply port 17 is connected to the pump 90 through a water supply pipe (not shown).

  The fountain device is roughly divided into components as a base 50, a first shaft portion 10, a second shaft portion 20, a discharge nozzle portion 30, a first shaft drive portion 11, a second shaft drive portion 21, a box portion ( Nozzle holding part) 40, connection piping part 60, first power transmission mechanism part 70, second power transmission mechanism part 80, and the like.

  As directions for explanation, (X, Y, Z) is shown. The X direction and the Y direction are directions constituting a horizontal plane, and the Z direction is a vertical direction. The X direction is the left and right direction when the fountain device is viewed from the front, and the Y direction is the depth direction when the fountain device is viewed from the front.

  The axes include a first axis A1, a second axis A2, a third axis A3, and a fourth axis A4. The first axis A1 extends in the X direction, is in a first height position in the Z direction, and is in the apparatus center position in the Y direction. The second axis A2 extends in the Y direction, is at a first height position in the Z direction, and is at the center position of the apparatus in the X direction. The third axis A3 extends in the Z direction and is at the center position of the apparatus in the X direction and the Y direction. The fourth axis A4 extends in the X direction and is at a second height position below the first axis A1 in the Z direction.

  The first axis A1, the second axis A2, and the third axis A3 are orthogonal. These three axis orthogonal points are defined as an orthogonal point C0. The first axis A1 is a first rotation axis, and the second axis A2 is a second rotation axis. FIG. 1 shows a state in which the rotation angles of these two axes are at the reference position. The first axis A1 and the second axis A2 are orthogonal axes. The first axis A1 and the fourth axis A4 are parallel axes. The fourth axis A4 is also a rotation axis and is a secondary axis with respect to the first axis A1.

  The first shaft portion 10 is disposed along the first axis A1. A second shaft portion 20 is disposed along the second axis A2. A nozzle portion 30 is disposed along the third axis A3 to discharge upward from the orthogonal point C0. The first shaft drive unit 11 and the first gear 71 are arranged along the fourth axis A4.

  The base 50 is composed of a combination of a first frame 51, a second frame 52, and a third frame 53. The stand 50 is installed on the installation surface below the water surface. Most of the parts excluding the nozzle 31 are disposed below the water surface. The first frame 51 and the second frame 52 support the first shaft portion 10 at two positions in the X direction. The third frame 53 fixes the first frame 51 and the second frame 52. The base 50, the box 40, and some parts are provided with holes or the like in order to reduce the water pressure below the water surface.

  The first frame 51 fixes the first shaft drive unit 11 at the position of the fourth axis A4 and supports the output shaft of the first shaft drive unit 11. The first frame 51 supports the main shaft pipe 41 of the first shaft portion 10 at the position of the first axis A1 and fixes the water supply portion 18 and the end portion 19. The second frame 52 fixes the second shaft drive unit 21 at the position of the first axis A1, and supports the output shaft of the second shaft drive unit 21.

  The first shaft portion 10 includes an end portion 19, a water supply portion 18, a part of the first frame 51, a second gear 72 of the first power transmission mechanism portion 70, and a first rotary joint in order from the right along the X direction. The piping 61c of 61, the box part 40, the 2nd drive shaft, a part of 2nd flame | frame 52, the 2nd shaft drive part 20, etc. are arrange | positioned.

  The main shaft pipe 41 of the first shaft A1 extends from the end portion 19 to the pipe 61c via the water supply portion 18, the hole of the first frame 51, and the second gear 72. The main shaft pipe 41 communicates with the pipe 61 c of the first rotary joint 61. In the main shaft 41, a portion from the water supply unit 18 to the pipe 61c is a water supply pipe.

  In the second shaft portion 20, the holder 28 of the second rotary joint 62, the main shaft tube 42 of the second shaft A2, the end portion 29, and the like are disposed in order from the back surface to the front surface along the Y direction.

  The main shaft tube 42 of the second shaft A2 extends from the inside of the holder 28 to the bearing end on the side of the box 40, the end of the nozzle 31 and the first gear 81 to the bearing end 29 on the side of the box 40. It is extended. The main shaft pipe 42 communicates with the piping in the holder 28 of the second rotary joint 62. In the main shaft tube 42, a portion from the holder 28 to the end portion of the nozzle 31 is a water supply tube, and communicates with a cavity in the nozzle 31.

  The discharge nozzle part 30 is constituted by a nozzle 31. The nozzle 31 extends along the third axis A3. The inside of the nozzle 31 is a cavity. At the position of the orthogonal point C0, the lower end of the nozzle 31 in the Z direction is fixed to the main shaft tube 42 of the second axis A2, and communicates with the water supply tube in the main shaft tube 42. The nozzle 31 has an opening 33 at the upper end in the Z direction, and water is discharged from the opening 33 in the direction of the third axis A3. The nozzle 31 stands upright in the vertical direction in the state of the reference position in FIG.

  The box portion 40 is a hollow orthogonal point accommodating portion having a hollow structure and is provided between the first frame 51 and the second frame 52 in a region including the orthogonal point C0. The box part 40 includes a cover 40a. The box portion 40 includes a pipe 61c of the first rotary joint 61, a main shaft pipe 42 of the second shaft portion 20, an end portion of the nozzle 31, a second power transmission mechanism portion 80, and a second drive shaft from the second shaft drive portion 21. , Etc. are housed. A pipe 61c of the first rotary joint 61 is accommodated in the cover 40a. In the box part 40, the center axis of rotation of the first gear 81 of the second power transmission mechanism part 80 is fixed at a position between the orthogonal point C0 and the end part 29 in the main shaft tube 42 extending in the Y direction. ing.

  The box part (nozzle holding part) 40 has a cover 40a fixed to the spindle 41 of the first shaft part 10 on the right side in the X direction, and rotates integrally with the rotation of the first axis A1. To do. The box portion 40 has an opening hole on the left side surface in the X direction, and the second drive shaft that is an output shaft from the second shaft drive portion 21 passes through the opening hole. The second drive shaft is connected to the second power transmission mechanism 80.

  The box portion 40 supports the main shaft tube 42 of the second shaft portion 20 in a Y direction so as to be rotatable by a bearing on the side surface, and does not rotate when the second shaft A2 rotates. The box portion 40 has a side surface on the back side to which the holder 28 of the second rotary joint 62 is fixed, and the main shaft tube 42 is penetrated by a bearing on the side surface on the back side. In the bearing on the side surface on the front side of the box portion 40, the end portion 29 of the main shaft tube 42 is rotatably supported. The cover 40a and the holder 28 are removable. The upper and lower surfaces of the box part 40 in the Z direction are open. Most of the nozzle 31 protrudes from the upper surface of the box 40. The first gear 81 protrudes partially from the upper and lower surfaces of the box portion 40.

  The box 40 has a box shape opened in the vertical direction. However, the box 40 does not necessarily have a box shape as long as it has a function as the nozzle holding unit. A part of the box 40 may be formed of a curved surface, or the upper and lower directions may be covered with a lid within a range that does not interfere with the nozzle 31 and the second power transmission mechanism 80.

  The connection piping unit 60 includes a first rotary joint 61, a second rotary joint 62, and a piping 63. The connection piping part 60 is a part that connects between the water supply pipe in the main shaft pipe 41 of the first axis A1 and the water supply pipe in the main shaft pipe 42 of the second axis A2. The first rotary joint 61 and the second rotary joint 62 are connected by a pipe 63. The pipe 63 is mainly a straight pipe, and has both ends bent at 90 °.

  The first rotary joint 61 includes a pipe 61c and includes a fixed part and a movable part. The fixing unit corresponds to a part of the water supply unit 18 and the first frame 51. The movable part includes a pipe 61c and a part of the main shaft pipe 41 communicating with the pipe 61c. A part of the spindle tube 41, which is a movable part, is inserted and supported in the fixed part. The movable part is connected to the fixed part so as to be rotatable about the first axis A1. The pipe 61 c has a shape that bends by 90 °, and has one end facing right in the X direction fixed to the main pipe 41 and the other end facing downward in the Z direction fixed to one end of the pipe 63.

  The second rotary joint 62 includes a pipe 62c and includes a fixed part and a movable part. The fixed part corresponds to a part of the pipe 62 c, the holder 28, and the box part 40. The movable portion corresponds to the main shaft tube 42 communicating with the pipe 62c. A part of the spindle tube 42 which is a movable part is inserted and supported in the fixed part. The movable part is connected to the fixed part so as to be rotatable about the second axis A2. A pipe 62 c is accommodated and fixed in the holder 28. The pipe 62 c has a shape that bends by 90 °, and has one end facing the front surface in the Y direction fixed to the main pipe 42 and the other end facing downward in the Z direction fixed to the other end of the pipe 63.

  The water supply unit 18 is provided with a water supply port 17 and supplies water to the water supply pipe in the main shaft pipe 41. The water supply unit 18 is also a holder for the first rotary joint 61. The water supply port 17 is provided obliquely downward with respect to the first axis A1. The main shaft pipe 41 penetrates through the water supply unit 18 and connects the water supply port 17 and the water supply pipe in the main shaft pipe 41 so that water can be supplied. The water supply unit 18 supports the main shaft tube 41 so that the first shaft A1 can rotate. The water supply unit 18 allows high-pressure water from the water supply port 17 to flow into the water supply tube in the main shaft tube 41 while maintaining the position without rotating the water supply port 17 with respect to the rotation of the main shaft tube 41.

  The pump 90 is a high-pressure water discharge pump. The pump 90 sends high pressure water to the water supply port 17 of the water supply unit 18 through the water supply pipe based on the drive control from the control unit 100. Thereby, the high-pressure water flows into the water supply pipe in the main shaft pipe 41 from the water supply port 17. The high-pressure water flows into the water supply pipe in the main shaft pipe 42 of the second shaft A2 from the water supply pipe in the main shaft pipe 41 via the connection pipe portion 60. The high-pressure water flows into the nozzle 31 from the water supply pipe in the main shaft pipe 42 and is discharged from the opening 33 to become a fountain.

  The first shaft drive unit 11 is disposed on the right side of the first frame 51 below the end portion 19 of the first shaft unit 10 in the Z direction along the fourth axis A4. The second shaft drive unit 21 is disposed on the left side of the second frame 52 along the first axis A1. The second shaft drive unit 21 is disposed on the same axis as the first axis A1 on the opposite side of the end 19 and the first shaft drive unit 11 in the X direction, that is, at the left end in FIG. The first shaft driving unit 11 and the second shaft driving unit 21 are fixed at predetermined positions, and do not rotate except for the output shaft.

  In the first shaft portion 10, there is a fourth axis A4 at a position within a predetermined radial distance range from the first shaft A1, and the first shaft drive portion 11 is disposed on the fourth axis A4. As a result, the components including the first shaft drive unit 11 and the first gear 71 are contained in a region having a predetermined radial distance from the first shaft A1. In addition, the components including the second shaft drive unit 21 and the box unit 40 are contained in a region having a predetermined radial distance from the first axis A1. In addition, the components including the second shaft portion 20 and the connection piping portion 60 are contained in a region having a predetermined radial distance from the first axis A1.

  The first shaft drive unit 11 includes a first drive motor 12, a cover 13, a water immersion sensor 14, a wiring tube 15, a bearing unit 16 and the like as components.

  The cover 13 is a waterproof cover for protecting the first drive motor 12, and is sealed to prevent water in the cover 13. A first drive motor 12 is accommodated in the cover 13. A water immersion sensor 14 is disposed on the bottom surface in the cover 13. At the right end portion of the cover 13 in the X direction, a wiring tube 15 is provided that faces downward in the Z direction. The conduit 15 is sealed for waterproofing. The wiring of the first drive motor 12 and the wiring of the water immersion sensor 14 are connected to the control unit 100 through the wiring pipe 15. The cover 13 is made of, for example, a metal having a rust prevention property or another substance. The waterproof seal function of the cover 13 may be realized by an O-ring, packing, or the like. The cover 13 can be removed at the time of maintenance, and the first drive motor 12 and the bearing portion 16 can be removed in this state.

  When the water immersion sensor 14 is immersed in the cover 13, the water immersion sensor 14 detects the water immersion and outputs the water immersion detection information to the control unit 100. When receiving the inundation detection information from the inundation sensor 14, the control unit 100 safely stops the operation of the first drive motor 12.

  The first drive motor 12 is a motor for rotationally driving the first axis A1. In the embodiment, the first drive motor 12 is a motor for rotationally driving the output shaft by the fourth axis A4. The first drive motor 12 is composed of a servo motor having a function of detecting the rotation angle of the output shaft. This function is realized by an encoder, for example. This function is a function of detecting the rotation angle of the first axis A1 through detection of the rotation angle of the fourth axis A4. In the embodiment, the rotational force is transmitted from the fourth axis A4 to the first axis A1 via the first power transmission mechanism 70.

  The output shaft of the first drive motor 12 is connected to the bearing portion 16. The bearing portion 16 is fixed to the first frame 51. The output shaft of the first drive motor 12 extends as a first drive shaft to the first gear 71 via the bearing portion 16 and the first frame 51.

  Based on the drive control from the control unit 100, the first drive motor 12 rotates the first drive shaft, which is the output shaft on the fourth axis A4, within a predetermined rotation angle range. The rotational movement of the first drive shaft is converted to the rotational movement of the first axis A1 through the first power transmission mechanism 70, and the main shaft tube 41 of the first axis A1 rotates. Along with the rotation of the first axis A1 of the main pipe 41, the parts such as the box portion 40, the connection piping portion 60, the second shaft portion 20 and the like of the first shaft portion 10 move so as to rotate integrally. Thereby, the nozzle 31 fixed to the main shaft tube 42 of the second axis A2 also moves so as to rotate around the first axis A1. That is, the first shaft drive unit 11 can move the nozzle 31 to rotate to a position of an arbitrary angle within a predetermined rotation angle range of the first axis A1.

  A first power transmission mechanism 70 is provided at a position on the left side of the first frame 51. The first power transmission mechanism unit 70 is a mechanism unit that converts the rotational motion of the first drive shaft of the fourth axis A4 into the rotational motion of the main shaft tube 41 of the first axis A1 and transmits the converted motion. The first power transmission mechanism unit 70 includes a first gear 71 and a second gear 72. The rotation center axis of the first gear 71 is fixed to the first drive shaft of the fourth axis A4. The rotation center axis of the second gear 72 is fixed to the main shaft pipe 41 of the first axis A1. The rotational force of the first drive shaft by the first drive motor 12 is transmitted from the first gear 71 through the second gear 72 as torque of the main shaft tube 41 of the first shaft A1 with torque conversion.

  In the embodiment, the first power transmission mechanism unit 70 is configured by a spur gear or the like. The first gear 71 has teeth formed on the outer periphery of a disc having a first diameter. The second gear 72 has teeth formed on the outer periphery of a disc having a second diameter larger than the first diameter. The teeth on the outer periphery of the first gear 71 and the teeth on the outer periphery of the second gear 72 are fitted. The 1st power transmission mechanism part 70 is applicable not only to such a mechanism.

  The second shaft drive unit 21 includes, as constituent elements, a second drive motor 22, a cover 23, a water immersion sensor 24, a wiring tube 25, a bearing unit 26, and the like. Basically, the first shaft driving unit 11 and the second shaft driving unit 21 have the same configuration.

  The cover 23 is sealed to prevent water from entering. A second drive motor 22 and a water immersion sensor 24 are accommodated in the cover 23. A wiring tube 25 is provided at the left end of the cover 23 in the X direction. The wiring of the second drive motor 22 and the wiring of the water immersion sensor 24 are connected to the control unit 100 through the wiring pipe 25. When the water immersion sensor 24 is immersed in the cover 23, the water immersion sensor 24 detects the water immersion and outputs the water immersion detection information to the control unit 100. When receiving the inundation detection information from the inundation sensor 24, the control unit 100 safely stops the operation of the second drive motor 22.

  The second drive motor 22 is a motor for rotationally driving the second axis A2. In the embodiment, the second drive motor 22 is a motor for rotationally driving the second drive axis on the first axis A1. The rotation directions of the first axis A1 and the second drive axis are the same. The second drive motor 22 is composed of a servo motor having a function of detecting the rotation angle of the output shaft. This function is a function of detecting the rotation angle of the second axis A2. In the embodiment, the rotational force is transmitted from the second drive shaft to the main shaft tube 42 of the second shaft A <b> 2 via the second power transmission mechanism 80.

  The output shaft of the second drive motor 22 is connected to the bearing portion 26. The bearing portion 26 is fixed to the second frame 52. The output shaft of the second drive motor 22 extends as a second drive shaft into the box portion 40 via the bearing portion 26 and the second frame 52.

  Based on the drive control from the control unit 100, the second drive motor 22 performs rotation drive of the second drive shaft on the first axis A1 within a predetermined rotation angle range. The rotational motion of the second drive shaft is converted into the rotational motion of the main shaft tube 42 of the second axis A2 through the second power transmission mechanism 80. The second power transmission mechanism unit 80 is a mechanism unit that converts the rotational motion of the second drive shaft into the rotational motion of the second axis A2 and transmits it. As a result, the spindle tube 42 of the second axis A2 rotates. Along with the rotation of the second axis A2 of the main shaft tube 42, the nozzle 31 fixed to the main shaft tube 42 moves so as to rotate around the second axis A2. In other words, the second shaft drive unit 21 can move the nozzle 31 so as to rotate to a position of an arbitrary angle within a predetermined rotation angle range of the second axis A2.

[Fountain device (2)]
FIG. 2 is a perspective view of the fountain device of FIG. 1 viewed from the back. Through the holes of the first rotary joint 61 and the first frame 51, the main shaft pipe 41 of the first axis A1 is rotatably supported. A pipe 61 c and a cover 40 a are fixed to the main shaft pipe 41 via a second gear 72. The first gear 71 is covered with a cover for safety.

  The second gear 72 has a shape in which the circumferential portion on the upper side in the Z direction is removed so as to correspond to a predetermined rotation angle range. When the first shaft A1 is rotationally driven, the second gear 72 rotates within a predetermined angle range about the main shaft pipe 41 of the first shaft A1. At that time, the second gear 72 moves without contacting other parts, and does not contact even when the nozzle 31 is tilted from the reference position.

  In the second shaft portion 20, the pipe 62 c of the second rotary joint 62 passes through the lower surface of the holder 28 and is inserted into the holder 28. The lower end 32 of the nozzle 31 is fixed to the orthogonal point C0 of the main shaft tube 42 of the second axis A2.

  The output shaft of the second drive motor 22 extends in the X direction as the second drive shaft through the hole of the second frame 52 and the opening hole on the side surface of the box portion 40. . A second gear 82 is fixed to the tip of the second drive shaft. There is an orthogonal point C0 at a position on the extension of the second gear 82 in the X direction. The second drive shaft and the main shaft tube 42 are not in contact with each other at a distance.

  The second power transmission mechanism unit 80 includes a first gear 81 and a second gear 82. The rotation center axis of the first gear 81 is fixed to the main shaft tube 42. The rotation center axis of the second gear 82 is fixed to the second drive shaft. The rotational motion of the output shaft by the second drive motor 22 is transmitted as rotational motion of the main shaft tube 42 of the second shaft A2 through torque conversion from the second drive shaft and the second gear 82 through the first gear 81.

  In the embodiment, the second power transmission mechanism unit 80 is constituted by a bevel gear (bevel gear) or the like as the cross-axis power transmission mechanism. The outer periphery of the second gear 82 is a conical surface, and teeth are formed on the conical surface. In the first gear 81, the side surface facing the orthogonal point C0 in the circumferential portion of the fan-shaped disc is an inclined surface corresponding to a predetermined rotation angle range of the second axis A2, and the inclined surface has Teeth are formed. The teeth of the first gear 81 and the teeth of the second gear 82 are fitted. The second power transmission mechanism unit 80 is not limited to such a mechanism, and can be applied, for example, an inclined gear (helical gear), a worm gear, or the like.

  When the second shaft A2 is rotationally driven, the first gear 81 moves so as to rotate around the second shaft A2 with a part thereof coming out of the box portion 40. At that time, the first gear 81 moves without contacting other parts.

[Fountain device (3)]
FIG. 3 shows a YZ plan view of the fountain device of FIG. 1 viewed from the right side. An end 29 is disposed on the front side (left side in FIG. 3) of the second axis A2 in the Y direction, and the second rotary joint 62 is disposed on the rear side (right side in FIG. 3).

  The rotation angle and swing angle of the first axis A1 are indicated by a rotation angle φ. The range of the rotation angle φ is indicated by φmin ≦ φ ≦ φmax. The reference for the rotation angle φ corresponds to the third axis A3 in the vertical direction, φ = 0 °, the minimum value is φmin, and the maximum value is φmax. In the embodiment, φmin = −70 ° and φmax = + 70 °. The direction inclined in the Y direction toward the back side is defined as the positive direction of the rotation angle φ and the maximum value φmax. That is, the nozzle 31 is movable in the range of about 140 ° around the first axis A1.

  Based on the drive of the first drive motor 12, the first axis A1 can rotate within the range of the rotation angle φ. Thereby, the nozzle 31 moves so that the tip is inclined within the range of the rotation angle φ. The nozzle 31 can be stationary at an arbitrary position within the range of the rotation angle φ, and can be rotated or reciprocated at a predetermined angular velocity. The nozzle 31 discharges water in a direction corresponding to the state of the rotation angle φ.

  As a modification, in the range of the rotation angle φ, the absolute value of the maximum value φmax of the positive swing angle and the minimum value φmin of the negative swing angle may be different (| φmin | ≠ | φmin |). For example, φmin = −60 °, φmax = + 80 °, etc.

  Specifically, the second rotary joint 62 includes a fixed portion 62a and a movable portion 62b. The movable portion 62b corresponds to a portion including the main shaft tube 42 of the second axis A2. The fixed part 62a corresponds to a part including the holder 28 and the pipe 62c. The pipe 62c has a shape that bends at 90 °. A movable part 62b is accommodated in the fixed part 62a. The movable portion 62b is connected so that the second axis A2 can rotate with respect to the fixed portion 62a. One end of the pipe 62c faces the front surface in the Y direction and is fixed to the main pipe 42. The other end of the pipe 62 c is fixed to the other end of the pipe 63 so as to face downward in the Z direction outside the holder 28.

[Fountain device (4)]
FIG. 4 shows an XZ plan view of the fountain device of FIG. 1 as viewed from the front. In the X direction, the end 19 and the first axis drive unit 11 are arranged on the right side of the first axis A1, and the second axis drive unit 21 is arranged on the left side. In the Z direction, the lowermost line indicates the installation surface 301, and the upper line indicates the water surface 302. The fountain apparatus is installed so that the tip of the nozzle 31 protrudes above the water surface 302 and most of the portion falls below the water surface 302.

  The rotation angle and swing angle of the second axis A2 are indicated by a rotation angle θ. The range of the rotation angle θ is indicated by θmin ≦ θ ≦ θmax. The reference of the rotation angle θ is made to correspond to the third axis A3 in the vertical direction, θ = 0 °, the minimum value is θmin, and the maximum value is θmax. In the embodiment, θmin = −70 ° and θmax = + 70 °. The direction inclined to the right in the X direction is defined as the positive direction of the rotation angle θ and the maximum value θmax. That is, the nozzle 31 is movable in the range of about 140 ° around the second axis A2.

  Based on the driving of the second drive motor 22, the second axis A <b> 2 can rotate within the range of the rotation angle θ. As a result, the nozzle 31 moves so that the tip is inclined within the range of the rotation angle θ. The nozzle 31 can operate within the range of the rotation angle θ.

  As a modification, the range of the rotation angle θ is different even if the maximum value θmax of the positive swing angle and the minimum value θmin of the negative swing angle are different from the reference position θ = 0 °. Good (| θmin | ≠ | θmin |). For example, θmin = −60 °, θmax = + 80 °, etc. may be used.

[Fountain device (5)]
FIG. 5 shows an XY plan view of the fountain device of FIG. 1 as viewed from above. In the connection piping section 60, the first rotary joint 61 of the first axis A1 and the second rotary joint 62 of the second axis A2 are connected by a pipe 63 extending obliquely upward in FIG. It communicates as a water pipe.

  The second shaft drive unit 21 includes a bearing unit 26 and the like, like the bearing unit 16 of the first shaft drive unit 11. The output shaft 501 of the second drive motor 22 is inserted into the bearing 502 of the bearing portion 26. The output shaft 501 passes through the hole of the second frame 52 and extends to the second gear 82 in the box portion 40 as the second drive shaft 503.

[Detail (1)]
FIG. 6 is an XZ plan view showing the detailed configuration of the first shaft drive unit 11 and the like of the fountain device as seen from the front. FIG. 6 shows an enlarged configuration of the first shaft driving unit 11, the first power transmission mechanism unit 70, the water supply unit 18, the first rotary joint 61, and the like in the vicinity of the first frame 51.

  In the fourth axis A <b> 4, the first drive motor 12 of the first axis drive unit 11 is fixed to the bearing unit 16 via the plate 605. The plate 605 fixes the cover 13. At the time of maintenance, the cover 13, the first drive motor 12, and the bearing portion 16 can be removed by releasing screwing or the like on the plate 605.

  The bearing portion 16 includes a bearing 602, and the outer periphery is sealed for waterproofing. The output shaft 601 of the first drive motor 12 is inserted into the bearing 602 of the bearing portion 16 as a first drive shaft. The bearing portion 16 is fixed to the hole of the first frame 51. The first drive shaft, which is the output shaft 601, passes through the hole of the first frame 51 and the bearing 602, exits to the left side of the first frame 51, and the first gear 71 is fixed to the first drive shaft. The rotation of the output shaft 601 is transmitted to the first gear 71 through the bearing 602.

  A water supply pipe 603 is provided in the main axis pipe 41 of the first axis A1. The right end of the spindle tube 41 is inserted into the water supply unit 18 as a holder through the hole of the first frame 51 and supported so that the first shaft A1 can rotate. The left end of the main shaft pipe 41 is fixed to the pipe 61 c via the second gear 72.

  Specifically, the first rotary joint 61 includes a fixed portion 61a and a movable portion 61b. The fixing part 61a corresponds to a part including the part of the first frame 51 and the water supply part 18. The movable part 61b corresponds to a part including the main pipe 41 and the pipe 61c. A part of the movable part 61b is accommodated in the fixed part 61a. The movable portion 61b can rotate the first axis A1 with respect to the fixed portion 61a.

[Detail (2)]
FIG. 7 is an XY plan view showing a detailed configuration of the second shaft portion 20 and the like of the fountain device, as viewed from above. FIG. 7 shows an enlarged configuration in the vicinity of the box portion 40, the second power transmission mechanism portion 80, the second shaft portion 20, the nozzle 31, the second rotary joint 62, and the like.

  The fixing portion 62 a of the second rotary joint 62 includes the holder 28 and the pipe 62 c and is fixed to the side surface on the back side of the box portion 40. The movable portion 62b of the second rotary joint 62 includes the main shaft tube 42, is accommodated in the holder 28, and is connected so that the second shaft A2 can rotate. The main shaft tube 42 penetrates the bearing on the side surface on the back surface side of the box portion 40, and the end portion 29 is rotatably supported by the bearing on the side surface on the front surface side of the box portion 40. The pipe 62 c is in communication with the water supply pipe 701 in the main shaft pipe 42, and the water supply pipe 701 is in communication with the end of the nozzle 31.

  A second gear 82 is provided at the tip of the second drive shaft 503 on the first axis A1. The teeth on the outer periphery of the second gear 82 and the teeth on the inner circumference of the first gear 81 are fitted. As the second gear 82 rotates, the first gear 81 moves so as to rotate around the second axis A2. With the rotation of the first gear 81, the main shaft pipe 42, which is the movable portion 62b, rotates on the second axis A2. As the main tube 42 rotates, the nozzle 31 moves to rotate around the second axis A2.

[Fountain equipment_component]
The fountain device of the embodiment has the following configuration points.

  (1) The fountain apparatus has a first axis A1 and a second axis A2 that are rotation axes, and a third axis A3 from which the nozzle 31 extends, and the first axis A1, the second axis A2, and the first axis The three axes A3 are arranged orthogonally, and the nozzle 31 is connected to the orthogonal point C0. The first axis drive unit 11 is arranged on the fourth axis A4 within a predetermined radial distance range near the first axis A1, and the second axis drive unit 21 is arranged on the same axis as the first axis A1. ing. In the fountain device, both the first shaft drive unit 11 and the second shaft drive unit 21 are arranged within a predetermined radial distance on the same axis as the first axis A1, and are located at the same position on the second axis A2. Is not arranged. In the fountain device, most of the components are arranged within a predetermined radius distance range on the same axis as the first axis A1.

  The wiring connected to the first axis driving unit 11 and the second axis driving unit 21 is arranged so as to come out from both ends of the first axis A1, and is not arranged near the orthogonal point C0. Moreover, it has the connection piping part 60 which connects the main axis | shaft pipe | tube 41 of 1st axis | shaft A1, and the main axis | shaft pipe | tube 42 of 2nd axis | shaft A2. The connection piping part 60 is arrange | positioned in the position away from the orthogonal point C0. The connection piping part 60 moves so as to rotate around the first axis A1 as the first axis A1 rotates.

  In the box 40 having a region including the vicinity of the orthogonal point C0 of the two axes and the nozzle 31, no drive motor, wiring, piping, and the like are arranged, and there are few objects arranged in the vicinity of the orthogonal point C0. The region of the trajectory when the object moves with the biaxial rotation is also small. Therefore, the occupied space in the vicinity of the orthogonal point C0 is small. In addition, the wiring of the drive motor does not break.

  (2) The second axis drive unit 21 is provided not on the second axis A2 but on the same axis as the first axis A1. The 1st axis drive part 11 moves the 2nd axis part 20 etc. which are being fixed to the 1st axis A1 integrally with rotation of the 1st axis A1. Since the first axis drive unit 11 does not need to move the second axis drive unit 21 when the first axis A1 is rotationally driven, the driving force, the driving power, and the like are small.

  (3) The fountain apparatus is arranged so that the nozzle 31 is connected to the position of the biaxial orthogonal point C0. In the fountain apparatus, the two axes can be independently driven to rotate within a predetermined rotation angle range, and the nozzle 31 can be varied in a desired direction within the predetermined range. By this biaxial rotational drive, the tip position of the nozzle 31 can be moved along a desired locus.

  Thereby, compared with the conventional structure in which the nozzle 31 is connected at a position away from the orthogonal point C0, the occupied space is small. At the same time, the direction of the nozzle 31 and the range of the rotation angle, the fountain shape, and the like can be made the same according to the line-of-sight direction when viewed from the viewer's line-of-sight direction. It can be made symmetrical. This fountain device can secure a wide range of directions and rotation angles of the nozzles 31. In addition, even when a plurality of fountain devices are installed, it is easy to align the direction of each fountain, and the degree of freedom of installation is high. This fountain device can freely control the direction of the nozzle 31 and the fountain regardless of the installation direction. This fountain apparatus has a high degree of freedom in the direction and shape of the fountain, and the performance capability of the fountain is high.

[Connection piping section]
It supplements about the connection piping part 60. FIG. The rotary joint is a mechanism unit for rotatably connecting the water supply pipe of the fixed part and the water supply pipe of the movable part and supplying water between them. The fixed part and the movable part are connected by a bearing, a rotation seal, or the like.

  8 and 9 will be used to supplement the movement and state of the connecting pipe section 60 accompanying the rotation of the first axis A1 and the second axis A2.

  FIG. 8 is a YZ plan view seen from the right side, showing a schematic arrangement of the fountain device in the + 45 ° rotation state of the first axis A1. In FIG. 8, the connecting pipe unit 60 and the nozzle when the first shaft A <b> 1 is rotated, for example, by + 45 ° (φ = + 45 °) from the reference state (φ = 0 °) of FIG. 3 by the first shaft driving unit 11. The state of 31 etc. is shown. The second axis A2 is not rotated and is in the state of the reference position (θ = 0 °). The nozzle 31, the second shaft portion 20, the box portion 40, the connection piping portion 60, and the like are disposed so as to be inclined at + 45 ° as a whole from the state of FIG. The movable part of the first rotary joint 61, the pipe 63, the second rotary joint 62, and the like are also inclined at + 45 °. The positions and orientations of the first shaft driving unit 11, the second shaft driving unit 21, the fixed portion of the first rotary joint 61, the water supply port 17, and the like have not changed.

  FIG. 9 is an XZ plan view seen from the front showing a schematic arrangement of the fountain device in a + 45 ° rotation state of the second axis A2. In FIG. 9, the connection pipe section 60 when the second axis A2 is rotated at, for example, + 45 ° (θ = + 45 °) from the reference state (θ = 0 °) of FIG. The state of the nozzle 31 etc. is shown. The first axis A1 is not rotated and is in the state of the reference position (φ = 0 °).

  The second drive shaft and the second gear 82 are rotated at + 45 ° around the first axis A1. The main shaft tube 42 which is the movable part of the first gear 81 and the second rotary joint 62 is rotated at + 45 ° around the second axis A2 from the state of FIG. Due to the + 45 ° rotation of the second axis A2, the nozzle 31 is inclined at + 45 ° around the second axis A2. At this time, the positions and orientations of the first rotary joint 61, the pipe 63, the fixing portion of the second rotary joint 62, and the like in the connection pipe section 60 are not changed from the state of FIG.

  As described above, when the first axis A1 and the second axis A2 are rotated, each part including the connecting pipe part 60 and the like operates without colliding to realize rotation within a predetermined angle range. .

[Biaxial rotation drive_correction control]
The fountain apparatus controls the first axis driving unit 11 and the second axis driving unit 21 from the control unit 100, thereby realizing independent rotational driving on the two axes of the first axis A1 and the second axis A2. Thereby, the direction and tip position of the nozzle 31 can be freely controlled within a predetermined range, and a desired fountain effect can be realized. As described above, the first shaft A1 and the second shaft A2 are connected through the second power transmission mechanism 80. During the rotation of the first axis A1, the main shaft pipe 41 of the first axis A1 is rotated from the first axis drive unit 11 through the first power transmission mechanism unit. Thereby, the box part 40, the 2nd axial part 20, etc. rotate, and the nozzle 31 moves so that it may rotate around the 1st axis | shaft A1.

  Here, as described above, the second drive shaft of the first shaft A1 and the main shaft tube 42 of the second shaft A2 are connected via the second power transmission mechanism 80. Accordingly, with the rotation of the first shaft A1, the rotational force is transmitted to the main shaft tube 42 of the second shaft A2 via the second power transmission mechanism 80, and the main shaft tube 42 of the second shaft A2 is rotated. The action works. Accordingly, the nozzle 31 moves so as to rotate around the second axis A2.

  On the other hand, when the second shaft A2 is rotationally driven, the main shaft tube 42 of the second shaft A2 is rotated from the second shaft driving portion 21 through the second power transmission mechanism portion 80. At this time, the first axis A1 does not rotate with the second axis A2.

  Therefore, in the fountain device of the embodiment, when only the first axis A1 is rotated, the control is performed so that the rotation angle state is maintained without rotating the second axis A2 with the rotation of the first axis A1. Correction is performed by drive control from the unit 100. Such correction is not necessary when only the second axis A2 is rotated.

[Control unit]
FIG. 10 shows a functional block configuration of the control unit 100 in the fountain apparatus of FIG. The rotational drive control of the first axis A1 and the second axis A2 of the control unit 100 including the correction control will be described with reference to FIG. The control unit 100 corresponds to a swing fountain control system.

  The host system 110 is a system that gives a host operation command to the control unit 100 or the like. The host system 110 has a configuration including, for example, a PLC (Programmable Logic Controller). The host system 110 includes a user interface, and can be input / output by a user. The user operates the host system 110 to input information related to the fountain effect. The host system 110 gives a host operation command to the control unit 100 and the pump 90 based on the information. As a higher-order operation command to the control unit 100, a first axis operation command signal 201 that is an operation command to the first axis A1 and a second axis operation command signal 202 that is an operation command to the second axis A2 are included. .

  Note that examples of operation commands from the host system 110 to the pump 90 include ON / OFF of high-pressure water supply, a flow rate control command, and the like. Thereby, the flow volume and pressure of the high pressure water supplied from the water supply port 17 can be adjusted. Moreover, the form with which the illuminating device is connected as a fountain system is also possible, and on / off, the brightness, etc. of illumination of an illuminating device are controllable from the high-order system 110 in that case.

  The control unit 100 is realized by a circuit board or the like, and executes software program processing by a CPU or the like, or processing by a hardware circuit such as an ASIC. The control unit 100 controls the biaxial rotational drive based on a program or function that can be set by the user. The control unit 100 has a function of correcting the biaxial rotation angle as the correction control in order to realize biaxial independent rotational driving. The control unit 100 controls the rotation angle φ of the first axis A1 and the rotation angle θ of the second axis A2 independently by controlling the driving of the first drive motor 12 and the second drive motor 22, thereby the nozzle 31. Are controlled to a desired direction, a tip position, an operation locus, and the like.

  The control unit 100 includes a first conversion unit 101, a second conversion unit 102, and a correction conversion unit 103 as processing units related to the above functions.

  Based on the operation command from the host system 110, the control unit 100 performs correction control so as to obtain a correction value for the rotation angle θ of the second axis A2 by conversion from the rotation angle φ of the first axis A1. When the rotation angle θ is maintained without rotating the second axis A2 as the first axis A1 rotates, the control unit 100 corrects the driving of the second axis A2.

  The first conversion unit 101 receives the first axis motion command signal 201 from the host system 110, applies the first axis motion command signal 201 as an input value to a predetermined function, and outputs the first axis as the output value of the function. It converts into the command angle of axis A1. The command angle of the first axis A1 is a command value of the rotation angle φ of the first axis A1. The first conversion unit 101 generates a first drive motor operation command value 203 based on the command angle of the first axis A1. The first conversion unit 101 outputs a first drive motor operation command value 203.

  The second conversion unit 102 receives the second axis motion command signal 202 from the host system 110, applies the second axis motion command signal 202 to a predetermined function as an input value, and outputs the second axis as the output value of the function. It converts into the command angle of axis A2. The command angle of the second axis A2 is a command value of the rotation angle θ of the second axis A2. The second conversion unit 102 generates a second drive motor upper operation command angle 204 based on the command angle of the second axis A2. The second drive motor upper operation command angle 204 is an upper operation command angle related to the second drive motor 22, and indicates the position of the rotation angle θ of the second axis A2 when only the second axis operation command signal 202 is considered. . The second conversion unit 102 outputs the second drive motor upper operation command angle 204.

  The correction conversion unit 103 inputs the first drive motor operation command value 203 and also inputs the second drive motor upper operation command angle 204 as an upper operation command angle update. The correction conversion unit 103 performs conversion to generate a correction value of the operation command using these input values. The correction conversion unit 103 performs a predetermined correction calculation on the higher-order motion command angle of the second axis A2 to determine the motion command angle of the second axis A2.

  Specifically, the correction conversion unit 103 causes the second shaft A2 to be moved by the first gear 81 of the second power transmission mechanism unit 80 according to the first drive motor operation command value 203 from the second drive motor upper operation command angle 204. Subtract the amount of angle that will be used. The latter angular amount is assumed to be K1. That is, [second drive motor upper operation command angle 204] − [angle amount K1]. As a result, the correction conversion unit 103 obtains a correction value of the operation command value related to the second drive motor 22 and outputs it as the second drive motor operation command value 205.

  The control unit 100 does not need to correct the second drive motor upper operation command angle 204 when there is no change in the first axis operation command signal 201 at the same timing. The angle 204 is output as it is as the second drive motor operation command value 205. The control unit 100 outputs the correction value from the correction conversion unit 103 as the second drive motor operation command value 205 because correction is necessary when there is a change in the first axis operation command signal 201 at the same timing. To do.

  The first drive motor operation command value 203 is output as a first axis drive control signal 206 that is an operation command to the first axis A1, and is input to the first drive motor 12 of the first axis drive unit 11. The first drive motor 12 rotates the fourth axis A4, and the first shaft A1 is rotated through the first power transmission mechanism unit 70 so that the commanded rotation angle φ is obtained.

  The second drive motor operation command value 205 is output as a second axis drive control signal 207 that is an operation command to the second axis A2, and is input to the second drive motor 22 of the second axis drive unit 21. The second drive motor 22 rotates the second drive shaft, and the second shaft A2 is rotated through the second power transmission mechanism 80 to be in the state of the commanded rotation angle θ.

  In accordance with the fountain effect, the two-axis independent rotation drive control is performed. Thereby, the tip of the nozzle 31 moves along a predetermined locus in a predetermined region, and a fountain effect is realized by the water discharged from the tip of the nozzle 31. In the case where both the first axis A1 and the second axis A2 are rotated simultaneously, the description can be omitted because it can be realized by applying the correction control.

[Fountain production ability]
The fountain performance capability using the fountain apparatus will be described with reference to FIGS. 11 and 12.

  FIG. 11 is a diagram illustrating an example of an installation state and a rotation angle range of a plurality of fountain devices in the biaxially driven fountain device of the comparative example. FIG. 11 shows a schematic configuration when the fountain device and the fountain are viewed from the viewer's line of sight.

  In the fountain device of the comparative example, the first axis and the second axis are orthogonal to each other, and the nozzle is connected in an orthogonal direction at the orthogonal point E0 or a position away from the orthogonal point on the second axis. Yes.

  (A) of FIG. 11 is an XY plan view showing a state in which two fountain devices having the same configuration of the comparative example are arranged in different directions. The housing of the fountain device is schematically shown as a rectangle. The first fountain device on the left side is arranged so that the first axis extends in the Y direction, which is the first direction. The second axis is disposed in the X direction perpendicular to the first axis. The nozzle is connected in the direction of the Z direction to an orthogonal point E0 between the first axis and the second axis, or a point E1 at a position away from the orthogonal point E0 on the second axis. The second fountain device on the right side is arranged in a direction inclined by 45 ° with respect to the direction of the first fountain device.

  The viewing direction of the viewer is assumed to be the Y direction. It is assumed that the two fountain devices are operated in the same manner, that is, the same operation command is given. For example, assume that the first axis is rotated within a predetermined angle range. In the case of the configuration in which the nozzle is located at the point E1 at a position away from the orthogonal point E0, the maximum elevation angle range of the first axis viewed from the line-of-sight direction is not symmetrical with respect to the vertical axis. In addition, when the two fountain devices are viewed from the line-of-sight direction, the operation range and locus of the nozzle tip are different between the two fountain devices.

  FIG. 11B shows an XZ plane when the two fountain devices of FIG. 11A are viewed from the viewing direction. The range of the rotation angle of the first axis of the left fountain device is the range 1101 in the case of the orthogonal point E0, and the range 1102 in the case of the point E1 at a position away from the orthogonal point E0. In a range 1102, the shape is asymmetric with respect to the Z-direction axis. The range of the rotation angle of the right fountain device is the range 1103 in the case of the orthogonal point E0, and the range 1104 in the case of the point E1 at a position away from the orthogonal point E0. In a range 1104, the shape is asymmetric with respect to the Z-direction axis. The range 1103 appears to be narrower than the range 1101. The range 1104 appears narrower than the range 1102. The same applies to the rotation operation of the second axis. When viewed from the viewer's line of sight, the rotation angle and the operation range of the nozzle tip are different between the two fountain devices.

  In a fountain system having a plurality of fountain devices, when the fountain devices are arranged in different directions, the positions and trajectories of the fountains differ when the fountain is viewed from the direction of the line of sight of a viewer. That is, the fountain effect that aligns the positions and trajectories of a plurality of fountains cannot be realized as it is. In order to realize a fountain effect that aligns them, for example, a complicated command is required so as to perform different drive control individually for each fountain device from the host system.

  On the other hand, FIG. 12 shows an example of the installation state and rotation angle range of a plurality of fountain devices in the fountain device of the embodiment.

  FIG. 12A is an XZ plan view schematically showing the fountain device according to the embodiment as viewed from above. An example in which two identical fountain devices are arranged is shown. The outline of the fountain device is schematically shown as a rectangle. The fountain device on the left side is arranged with the first axis A1 in the Y direction. The right fountain device is arranged such that the first axis A1 is inclined by 45 ° with respect to the Y direction of the first axis A1 of the left fountain device.

  In the fountain device of the embodiment, a nozzle 31 is connected to an orthogonal point C0 between the first axis and the second axis. Therefore, when the fountain of the fountain apparatus is viewed from the direction of the line of sight of any viewer, the maximum elevation angle range of the rotation angle φ of the first axis A1 can be made symmetrical.

  A range 1201 is a movable range of the tip of the nozzle 31 that combines the movable range of the rotation angle φ of the first axis A1 and the movable range of the rotation angle θ of the second axis A2 on the upper surface of the left fountain device. Indicates a circle. Similarly, a range 1202 indicates a circle that is a movable range of the tip of the nozzle 31 on the upper surface of the right fountain device.

  FIG. 12B is an XZ plan view of the two fountain devices of FIG. 12A viewed from the Y direction, which is the viewing direction. In any fountain device, the operation range at the tip of the nozzle 31 is symmetrical with respect to the axis in the Z direction. A range of a rotation angle φ of the first axis A1 viewed from the line-of-sight direction in the left first fountain apparatus is indicated by a range 1211. A range of the rotation angle φ of the first axis A1 viewed from the line-of-sight direction in the right second fountain apparatus is indicated by a range 1212. The range 1212 is narrower than the range 1211.

  A range 1213 is a range of the rotation angle φ that can be taken when viewed from the line of sight by appropriately controlling the two axes of the first axis A1 and the second axis A2 from the control unit 100 in the second fountain device. Indicates. This range 1213 is wider than the range 1212 and can be viewed in the same manner as the range 1211.

  The fountain device according to the embodiment is rotated by two or more fountain devices when viewed from the viewer's line of sight even when the plurality of fountain devices are arranged in different directions by two-axis independent rotational drive control. It is easy to make the range and the like the same and make it symmetrical. When the fountain is viewed from the direction of the viewer's line of sight, it is also easy to realize a fountain effect that aligns the positions and trajectories of a plurality of fountains. That is, according to the embodiment, a fountain device with high fountain performance can be provided.

[Effects of the embodiment, etc.]
As described above, according to the biaxially driven fountain device of the embodiment, the occupied space in the region near the biaxial orthogonal point C0 and the nozzle 31 can be reduced, and the fountain device can be reduced in size. . The conventional driving unit, wiring, piping, and the like in the vicinity of the orthogonal point C0 can be reduced. The second shaft drive unit 21 is fixed to the second frame 52, the wiring in the second shaft drive unit 21 does not move, and the risk of disconnection is reduced. Further, according to the embodiment, the biaxial driving force and the like can be made relatively small. In addition, according to the embodiment, the direction of the nozzle 31 and the range of the rotation angle can be secured widely, and the performance performance of the fountain when viewed from the viewer's line of sight can be enhanced.

  In the fountain device of the embodiment, the first shaft drive unit 11 and the second shaft drive unit 21 are arranged within a predetermined radial distance range on the same axis as the first axis A1. That is, the main components of the fountain device including the drive unit are arranged along the first axis A1, and the components arranged in the extending direction of the second axis A2 are reduced. Thereby, the width | variety of the fountain apparatus in the extension direction of 2nd axis | shaft A2 can be made narrower than before, a fountain apparatus can be reduced in size, and the installation space of a fountain apparatus can be made small. Even when a plurality of fountain devices are arranged side by side, they can be arranged in a smaller space.

  In the embodiment, the second axis drive unit 21 is not arranged on the same axis as the second axis A2, and the positions of the first axis drive unit 11 and the second axis drive unit 21 are fixed, The rotation associated with the rotation of the first axis A1 is not performed. In the comparative example, the second shaft driving unit is disposed on the same axis as the second shaft, and the rotation accompanying the rotation of the first shaft is performed. The weight of the second shaft portion 20 is lighter than that of the comparative example. Therefore, when the first shaft A1 is rotationally driven from the first shaft drive unit 11, the driving force required to rotate the second shaft portion 20 together with the first shaft portion 10 can be reduced. More stable driving than the example is possible, and driving power and the like can be reduced.

  In the embodiment, since the wiring or the like of the shaft driving unit is not arranged near the orthogonal point C0, the wiring or the like moves near the orthogonal point C0 as the first axis A1 or the second axis A2 rotates. In addition, stable rotation drive is possible.

  In the embodiment, since the number of rotationally moving parts around the orthogonal point C0 is small and the volume is small, the installation is easy even when the water level is lower, that is, when the distance between the installation surface and the water surface is short.

  In the embodiment, based on the program and function of the control unit 100, the rotation of the two axes can be freely and independently controlled, and the nozzle 31 can be freely moved within a predetermined range. Thereby, the tip of the nozzle 31 can be moved irregularly along a locus such as a circle, an ellipse, or an eight figure, and various fountain effects are possible.

[Other embodiments]
FIG. 13: shows the XZ top view seen from the front as a structure of the fountain apparatus of other embodiment. Since the basic structure in the fountain apparatus of other embodiment is the same as that of the above-mentioned embodiment (FIG. 4), a different part from FIG. 4 is demonstrated.

  This fountain apparatus has a plurality of nozzles 31b. In the configuration of FIG. 13, three nozzles 31b are provided at intervals of 120 ° with respect to the orthogonal point C0 of the main axis tube 42 of the second axis A2. In order to enable each nozzle 31b to rotate with respect to the second axis A2, the dimension in the X-axis direction of the box portion 40b (nozzle holding portion) with respect to the length of the nozzle 31b is shown in the box portion 40 of FIG. Compared to larger. Similarly to the box part 40b, the pipe 63b of the connection pipe part 60b and the third frame 53b are also larger in the X-axis direction than the pipe 63 and the third frame 53 of the connection pipe part 60 of FIG.

  Unlike the first gear 81 of FIG. 4, the first gear 81b in the second power transmission mechanism unit 80 is a circular bevel gear, and allows infinite rotation of 360 ° without any limitation on the rotation angle. By adopting such a structure, the nozzle 31b can rotate without limitation inside the box portion 40b. In this fountain device, the drive motor of the shaft drive unit is disposed outside the frame and the drive motor itself does not rotate, as in the above-described embodiment. It becomes possible to make an infinite rotation of 360 ° around A2.

  Further, if the water surface is above the intermediate position between the tip of the nozzle 31b and the orthogonal point C0, a plurality of nozzles 31b do not come out of the water surface at the same time, which is an advantage in production.

  In this embodiment, the number of nozzles 31b is three. However, four nozzles 31b may be provided at intervals of 90 °, or other numbers may be used.

[Modification]
The following is mentioned as a modification of the fountain apparatus of embodiment.

  (1) In the above-described embodiment, the first shaft drive unit 11 is provided on the fourth shaft A4. However, the present invention is not limited to this. In the above-described embodiment, the width in the X direction of the fountain device can be reduced by disposing the first axis drive unit 11 on the fourth axis A4. Further, during maintenance, the first shaft drive unit 11 can be detached from the first frame 51. For example, even when the cover 13 is submerged, the first drive motor 12 and the bearing unit 16 can be maintained. is there. On the other hand, as a modification, the length of the first axis A1 is extended, and the first axis drive unit 11 is disposed at a coaxial position of the first axis A1, for example, at the end 19 or an extension position thereof. Also good. In the case of this modification, the width of the fountain device in the X direction is larger, but the fourth axis A4 is not necessary, and the height in the Z direction can be reduced. Moreover, the 1st power transmission mechanism part 70 grade | etc., Can be reduced. The number of frames that support the first shaft portion 10 may be increased to 3 or more.

  (2) In the above-described embodiment, the position of the fourth axis A4 where the first axis driving unit 11 is arranged is the position below the end 19 of the first axis A1 in the Z direction. Any position within the predetermined radial distance range near the first axis A1 is possible. For example, the position on the front side or the back side in the Y direction with respect to the first axis A1 may be used. In this modification, along the position of the fourth axis A4, the first shaft drive unit 11, the hole of the first frame 51, the first gear 71, and the like are arranged. In this case, the height in the Z direction can be reduced instead of increasing the width in the Y direction of the fountain device.

  (3) In the above-described embodiment, the first gear 81, which is a component of the second power transmission mechanism 80, is arranged at the front side in the Y direction with respect to the orthogonal point C0 in the box 40. Yes. Not limited to this, as a modification, the first gear 81 or the like may be arranged at a position on the back side in the Y direction with respect to the orthogonal point C0.

  Although the present invention has been specifically described above based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the invention.

  DESCRIPTION OF SYMBOLS 10 ... 1st shaft part, 11 ... 1st shaft drive part, 12 ... 1st drive motor, 13, 23 ... Cover, 14, 24 ... Submergence sensor, 15, 25 ... Wiring pipe, 16, 26 ... Bearing part, 17 DESCRIPTION OF SYMBOLS ... Water supply port, 18 ... Water supply part, 19 ... End part, 20 ... 2nd axis part, 21 ... 2nd axis drive part, 22 ... 2nd drive motor, 28 ... Holder, 29 ... End part, 30 ... Discharge nozzle Part, 31, 31b ... nozzle, 40, 40b ... box part, 41 ... main shaft tube, 42 ... main shaft tube, 50 ... stand, 51 ... first frame, 52 ... second frame, 53, 53b ... third frame, 60 , 60b ... Connection pipe section, 61 ... First rotary joint, 62 ... Second rotary joint, 63, 63b ... Pipe, 70 ... First power transmission mechanism section, 71 ... First gear, 72 ... Second gear, 80 ... Second power transmission mechanism, 81, 81b ... first gear, 82 ... first Gear, 90 ... pump, 100 ... controller, 110 ... host system.

Claims (8)

A fountain device in which the direction of a nozzle that discharges water by biaxial rotation drive is variable,
A first shaft portion disposed along a first axis extending in a first direction of the horizontal direction ;
A second shaft portion disposed along a second axis extending in a second direction of the horizontal direction intersecting the first direction;
A nozzle holding portion that rotatably supports the nozzle with respect to the second axis;
A frame that rotatably supports the nozzle holding portion with respect to the first shaft;
A first shaft drive unit for rotationally driving the first shaft;
A second shaft drive unit for rotationally driving the second shaft;
With
The first axis driving unit and the second axis driving unit are fixed to the frame, the first axis driving unit rotationally drives the nozzle holding unit, and the second axis driving unit is an intersecting axis. Rotating the nozzle through a power transmission mechanism;
Fountain equipment. The fountain device according to claim 1.
The first axis driving unit and the second axis driving unit are arranged to face each other with a position sandwiching the nozzle holding unit, and a rotation axis in the second axis driving unit is different from the second axis. Direction of rotation axis,
Fountain equipment. The fountain device according to claim 1.
The nozzle holding portion has a hollow structure that holds the main shaft tube of the second shaft portion and the nozzle inside, and the main shaft tube of the second shaft portion rotates power from the second shaft driving portion. The cross axis power transmission mechanism for converting the axis is provided;
Fountain equipment. The fountain device according to claim 1.
The nozzle is arranged to be connected to an intersection of the first axis and the second axis, and a pipe for supplying water to the nozzle is connected to the nozzle holding part by a rotatable rotary joint. Yes,
Fountain equipment. The fountain device according to claim 1.
The frame supports the nozzle holding portion from both directions so that the nozzle holding portion can rotate with respect to the first axis.
Fountain equipment. The fountain device according to claim 5,
The second shaft driving unit is disposed outside the frame that holds the nozzle holding unit,
Fountain equipment. The fountain device according to claim 1.
A control unit that drives and controls the first axis driving unit and the second axis driving unit;
The control unit controls a rotation angle of the second axis in the second axis driving unit so as to correct the rotation of the second axis caused by the rotation of the first axis.
Fountain equipment. The fountain device according to claim 1.
The nozzle holding unit holds a plurality of nozzles having different angles around the second axis as the nozzle, and the nozzle is capable of infinite rotation of 360 ° around the second axis. ,
Fountain equipment.

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