Pollination device

Abstract

To provide a pollination device for easily and highly successfully artificially pollinating plants having a piplet on the stigma of the pistil, such as the Orchidaceae family. [Solution] The pollination device 1 is a pollination device for plants having a pip 110 on the stigma of a pistil 108, and includes: an air density generating unit 3 that generates air density that displaces the position of the pip 110 that separates the stamen 107 and the pistil 108; The device is equipped with a pollination working unit 2, which consists of a cylindrical body connected to a density generating unit 3, and which stores at least the stamens 107, pistil 108 and beaklets 110 inside the cylindrical body and propagates density-varying air while diffusing pollen from the stamens 107 to pollinate the pistil 108, and the density-varying unit 3 has a rotational drive unit 30 that generates rotational motion, and a motion conversion unit 36 ​​that is connected to the rotational drive unit 30 and converts the rotational motion of the rotational drive unit 30 into reciprocating motion to generate density-varying air.

Description

[Technical Field]

[0001] The present invention relates to a pollination device for artificial pollination of plants having pituitaries on the stigma of the pistil. [Background technology]

[0002] For example, orchids like vanilla have evolved to prevent self-pollination in order to preserve genetic diversity, resulting in a structure with spits on the stigma of the pistil. Because of this structure, artificial pollination requires removing or lifting the spits for each flower to easily expose the stigma, which is extremely time-consuming. Specifically, artificial pollination is carried out by lifting the spits with a long, thin object like a toothpick or cotton swab, and then pressing the pollen from the stamen onto the stigma of the pistil.

[0003] One example of a technique for efficiently performing artificial pollination is disclosed in Patent Document 1. The technique disclosed in Patent Document 1 includes a pollen storage tank that stores a mixture of liquid (water) and pollen, a suction tube that sucks in the mixture, a cluster generation unit that applies vibrations to the sucked pollen mixture to generate clusters of the pollen mixture, electrodes that apply a voltage to the pollen mixture, a spray nozzle that sprays clusters of the pollen mixture to the outside to pollinate the pistil, and a control unit that controls the voltage applied to the electrodes, and the control unit controls the voltage appropriately depending on the flowering state of the flower to be pollinated. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2023-81536 Summary of the Invention [Problem to be solved by the invention]

[0005] However, the technology described in Patent Document 1 had the problem that artificial pollination was difficult for plants that have pituitaries on the stigma of the pistil, because the pituitaries inhibit the dispersion of the sprayed pollen mixture and the pollen contained therein.

[0006] The present invention has been made to solve the above-mentioned problems, and aims to provide a pollination device that can effectively perform artificial pollination even in plants that have pips on the stigma of the pistil by displacing the position of the pips by utilizing air density variations and diffusing pollen. [Means for solving the problem]

[0007] The pollination device of the present invention is a pollination device for plants having beaklets on the stigma of the pistil, and is equipped with a density generating unit that generates air density variations that displace the position of the beaklets that separate the stamens and pistil, and a pollination working unit consisting of a cylindrical body connected to the density generating unit, which stores at least the stamens, pistil, and beaklets within the tube of the cylindrical body and propagates the air density variations while diffusing pollen from the stamens to pollinate the pistil, and the density generating unit has a rotational drive unit that generates rotational motion, and a motion conversion unit connected to the rotational drive unit that converts the rotational motion of the rotational drive unit into reciprocating motion to generate air density variations.

[0008] Thus, the present invention provides a pollination device for plants that have beaklets on the stigma of the pistil, and is equipped with a density generating unit that generates air density variations that displace the position of the beaklets that separate the stamens and pistil, and a pollination working unit consisting of a cylindrical body connected to the density generating unit, which stores at least the stamens, pistil, and beaklets within the cylindrical body and propagates air density variations, diffusing pollen from the stamens to pollinate the pistil.The density generating unit has a rotary drive unit that generates rotational motion, and a motion conversion unit connected to the rotary drive unit that converts the rotational motion of the rotary drive unit into reciprocating motion, generating air density variations.As a result, the air density variations generated by the reciprocating motion of the motion conversion unit displace the beaklets away from the pistil, and pollen can be spread in the space formed between the beaklets and pistil, making it possible to efficiently artificially pollinate even plants that have beaklets. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a schematic diagram showing the structure of vanilla flower. [Figure 2] 1A and 1B are schematic diagrams of a pollination device according to a first embodiment of the present invention, in which (a) is a plan view, (b) is an end view taken along line AA of (a), and (c) is an end view taken along line BB of (b). [Figure 3] FIG. 2 is a schematic diagram showing the state of the tip of the cylindrical body of the pollination working unit during pollination work using the pollination device according to the first embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram showing the operation of the sparse / dense generation unit in the pollination device according to the first embodiment of the present invention. [Figure 5] FIG. 1 is a schematic diagram illustrating the state inside a pollination working unit in a pollination device according to a first embodiment of the present invention. [Figure 6] FIG. 3 is a schematic diagram showing another example of the pollination device according to the first embodiment of the present invention. [Figure 7] FIG. 4 is a schematic diagram of a pollination device according to a second embodiment of the present invention. [Figure 8] FIG. 10 is a schematic diagram of a pollination device according to a third embodiment of the present invention. [Figure 9]10A and 10B are schematic diagrams of a pollination device according to a fourth embodiment of the present invention, in which (a) is an enlarged end view of a main part, and (b) and (c) are end views taken along line CC of (a). DETAILED DESCRIPTION OF THE INVENTION

[0010] (First embodiment of the present invention) The pollination device according to this embodiment will be described with reference to FIGS. 1 to 5. The pollination device according to this embodiment efficiently performs artificial pollination on plants having beaklets. Beaklets, also known as rostellum, columns, or beak-like processes, are membranous structures in the flowers of Orchidaceae plants (particularly the genus Vanilla) that prevent self-pollination. As described above, conventional artificial pollination involves lifting the membranous beaklets and then pressing the pollen onto them. In this embodiment, the position of the beaklets is displaced by utilizing air density, allowing pollen to be dispersed into the space created between the beaklets and the pistil, thereby efficiently performing artificial pollination. In the following embodiment, the subject of artificial pollination will be described as a vanilla flower.

[0011] First, the structure of the vanilla flower used in this embodiment will be described with reference to FIG. 1, a vanilla flower 100 has six petals: an upper sepal 101 located on the upper side, a right sepal 102 located on the right side, a left sepal 103 located on the left side, a right lower sepal 104 located on the lower right, a left lower sepal 105 located on the lower left, and a labellum 106 (lip) located in the center. The labellum 106 has a special color and shape different from the other petals in order to attract insects and other pollinators.

[0012] Inside the labellum 106, there is formed a column 109, which is an organ containing the stamens 107 and the pistil 108. In this column 109, a beaklet 110 is formed to prevent direct physical contact between the stamens 107 and the pistil 108. As mentioned above, in conventional manual artificial pollination, it is necessary to first lift the beaklet 110 with a toothpick or cotton swab, and then press the pollen 111 attached to the tip of the stamen 107 onto the pistil 108. This is a very delicate task that is difficult for elderly people and requires a great deal of work, as it must be done for each flower.

[0013] The schematic diagram and names of the vanilla flower 100 shown in FIG. 1 are defined in this embodiment and may differ from common names.

[0014] Next, a pollination device for artificially pollinating the vanilla flowers 100 described above will be described. As shown in Figure 2, pollination device 1 is a cylindrical body comprising pollination unit 2, which houses at least a column 109 at the tip of the cylindrical body; air density generating unit 3, which is connected to pollination unit 2 and generates air density variations and transmits this air density variation to the inside of the cylindrical pollination unit 2; intermediate exterior unit 4, which connects pollination unit 2 and air density generating unit 3; handle 5, which is attached to the outside of case 31 that houses air density generating unit 3 and is held by the user to support pollination device 1; pollination switch 6, which is located on handle 5 and starts pollination by pollination device 1; and control unit 7, which is located within handle 5 and controls the operation of air density generating unit 3. The cylindrical pollination unit 2 may also house label 106.

[0015] The density generating unit 3 comprises a rotational drive unit 30 that generates rotational motion, and a motion conversion unit 36 ​​that is connected to the rotational drive unit 30, converts the rotational motion generated by the rotational drive unit 30 into reciprocating motion, and transmits the density and sparseness of the air generated by this reciprocating motion into the tube of the pollination work unit 2.

[0016] The rotary drive unit 30 is housed within the gripping unit 5 and comprises a drive source 32 formed by an electric motor or the like, and a rotating body 34 formed by a disk-like body and supported on a drive shaft 33 of the drive source 32. A support portion 35 is erected on the periphery of the rotating body 34, and supports a rod 37 serving as a connecting body, which will be described later. The rod 37 is supported by the support portion 35 so as to be rotatable in response to the rotation of the rotating body 34. The rotor 34 does not have to be a disk-shaped body, but may be a rod-shaped crankshaft. In this case, the base end of the crankshaft is rotatably supported on the drive shaft 33, and the tip end is connected to one end of the rod 37.

[0017] The motion conversion unit 36 ​​is configured to include a rod 37 having one end supported by the support unit 35, and a piston 38 as an actuator connected to the other end of the rod 37. Rod 37 is connected to piston 38 so that it can vibrate back and forth in the left and right direction of pollination device 1, with the center of piston 38 as a fulcrum. Furthermore, rod 37 may be configured to be bendable in the left and right direction, as long as it can cause piston 38 to move back and forth. The piston 38 is housed within the intermediate exterior part 4 and is slidable within the intermediate exterior part 4 along the central axis direction of the intermediate exterior part 4 .

[0018] When the pollination switch 6 is turned on by the user, the control unit 7 receives the signal and controls the drive source 32 to be driven.

[0019] Next, a method of using the pollination device 1 according to this embodiment will be described with reference to FIGS.

[0020] With the pollination switch 6 in the OFF state, the user holds the grip part 5, brings the tip of the pollination working part 2 close to the vanilla flower 100 to be pollinated, and stores at least the stilt 109 of the vanilla flower 100 inside the cylindrical body of the pollination working part 2. In this state, the user turns the pollination switch 6 ON.

[0021] When the pollination switch 6 is turned ON, the control unit 7 drives the drive source 32. When the drive source 32 is driven, the rotor 34 journaled on the drive shaft 33 of the drive source 32 starts to rotate in the rotation direction R1. One end of a rod 37 supported by a support portion 35 of the rotor 34 moves in a circular orbit as the rotor 34 rotates. A piston 38 connected to the other end of the rod 37 slides back and forth within the intermediate exterior part 4 in accordance with the circular motion of the rod 37, generating variations in air density.

[0022] More specifically, assuming that the center of the rotor 34 is aligned with the central axis of the pollination unit 2, as shown in Figure 4, when one end of the rod 37 is at position L1, closest to the pollination unit 2, the piston 38 is also at position L2, closest to the pollination unit 2. As the rotor 34 rotates in direction R1 from this position, the end of the rod 37 is positioned at position L3, farthest from the pollination unit 2, and the piston 38 is also positioned at position L4, farthest from the pollination unit 2. The rotor 34 then rotates in direction R1, returning the end of the rod 37 to position L1. This rotational motion is repeated, causing the piston 38 to slide back and forth within the intermediate housing 4 between positions L2 and L4. Note that the center of the rotor 34 does not necessarily have to be aligned with the central axis of the pollination unit 2. The air density variation generated within the intermediate exterior part 4 is transmitted to the inside of the tube of the pollination working part 2 connected to the intermediate exterior part 4, where artificial pollination is carried out.

[0023] More specifically, just before the pollination switch 6 is turned ON, the pollen 111 attached to the tip of the stamen 107 is separated from the stigma of the pistil 108 by the beak 110 (see Figure 1(b)), and the pollen 111 does not pollinate the pistil 108. In this state, when pollination switch 6 is turned ON, rotor 34 rotates in rotation direction R1, and one end of rod 37 moves from position L1 to position L3, piston 38 moves from position L2 to position L4, changing the air density within intermediate sheath 4 and pollination working unit 2. When the air at the tip of pollination working unit 2 becomes sparse, pollen 111 detaches from stamen 107, as shown in Figure 5(a). At the same time, beaklet 110 is pulled away from pistil 108 and lifted. In other words, pollen 111 becomes suspended in the space within the tube of pollination working unit 2, creating a space between beaklet 110 and pistil 108.

[0024] Furthermore, when the rotor 34 rotates in the rotation direction R1 and one end of the rod 37 moves from position L3 to position L1, the piston 38 moves from position L4 to position L2, changing the density of the air inside the intermediate exterior part 4 and the pollination working part 2. At the moment when the air at the tip of the pollination working part 2 becomes dense, as shown in Figure 5(b), the pollen 111 floating in the space inside the tube of the pollination working part 2 spreads to cover the entire style 109, and some of it enters the space created between the beaklet 110 and the pistil 108 and pollinates the pistil 108.

[0025] While the pollination switch 6 is turned on, the states of Figure 5(a) and Figure 5(b) as described above are repeated alternately, thereby ensuring reliable pollination.

[0026] In pollination device 1 according to this embodiment, it is desirable that the distance traveled by piston 38 when it reciprocates, i.e., the distance from position L2 to position L4 at which piston 38 operates, be equal to or greater than the maximum distance between the stigma of pistil 108 and the tip of stamen 107. For example, since the maximum distance between the stigma of pistil 108 and the tip of stamen 107 is often 5 mm or less, it is desirable to set the distance between positions L2 and L4 to 10 mm or greater.

[0027] Next, the relationship between the moving speed of the piston 38 and resonance will be described. As described above, the purpose of the pollination device 1 according to this embodiment is to displace the position of the beak 110 and press the pollen 111 against the pistil 108. In the pollination device 1, the piston 38 is vibrated back and forth in the forward and backward directions, which generates and changes the density of the air according to the moving speed of the piston 38, thereby causing a resonance phenomenon according to the natural frequency of the beak 110 and displacing the beak 110. Therefore, the equation for the movement speed of the piston 38 is derived from the equation showing the position of the piston 38.

[0028] First, assuming that the length of rod 37 is sufficiently longer than the length L from the center of rotor 34 to support part 35 to which rod 37 is connected, the angle formed by rod 37 and the axis connecting the center of piston 38 and the center of rotor 34 will have a small effect on the position of piston 38. Therefore, if the angle formed by the axis and the line connecting the center of rotor 34 and support part 35 is θ, and taking into consideration the symmetry of piston 38 with respect to angle θ, which moves in a manner similar to simple harmonic motion, the position x(θ) of piston 38 can be expressed by the following equation (1).

[0029]

number

[0030] Since θ=ωt (angular velocity×time), by differentiating the above equation (1) with respect to time, we can obtain an equation for calculating the moving speed (v(t)) of the piston 38, which is expressed as the following equation (2).

[0031]

number

[0032] Let ω be the angular velocity that causes the resonance phenomenon. ext When the speed of the piston 38 is changed to the maximum value (v max )

[0033]

number

[0034] After the beak 110 starts to displace due to resonance, it becomes possible to displace the beak 110 greatly due to vibrations caused by air density, air pressure and / or wind force, etc., which depend on the moving speed of the various pistons 38. While the beak 110 is displacing greatly, pollen 111 is dispersed around the pistil 108, ensuring reliable pollination.

[0035] As described above, the pollination device 1 according to this embodiment is a pollination device for a plant having beaklets 110 on the stigma of the pistil 108, and is equipped with a density generating unit 3 that generates air density variations to displace the positions of the beaklets 110 that separate the stamens 107 and the pistil 108, and a pollination working unit 2 that consists of a cylindrical body connected to the density generating unit 3 and that disperses pollen 111 from the stamens 107 to pollinate the pistil 108 while propagating air density variations with at least the stamens 107, pistil 108, and beaklets 110 housed within the cylindrical body. The density generating unit 3 has a rotational drive unit 30 that generates rotational motion, and a motion conversion unit 36 ​​that is connected to the rotational drive unit 30 and converts the rotational motion of the rotational drive unit 30 into reciprocating motion to generate air density variations.The air density variations generated by the reciprocating motion of the motion conversion unit 36 ​​displace the beaklets 110 away from the pistil 108, and as a result, pollen 111 can be spread in the space formed between the beaklets 110 and the pistil 108, making it possible to efficiently perform artificial pollination even on plants that have beaklets 110.

[0036] Furthermore, since the rotary drive unit 30 comprises a drive source 32 and a rotating body 34 supported on a drive shaft 33 of the drive source 32, and the motion conversion unit 36 ​​comprises a rod 37 as a connecting body, one end of which is connected to the rotating body 34 of the rotary drive unit 30, and a piston 38 as an operating body, which is connected to the other end of the rod 37 and moves back and forth within the cylindrical body, the air density can be controlled using a crank mechanism, which enables artificial pollination to be performed with high efficiency using a simple configuration and reduces manufacturing costs.

[0037] The rod 37 may be connected via a protrusion 39 that protrudes from the main surface of the piston . As shown in Figure 6, protrusion 39 is provided so as to protrude from above the main surface of piston 38 toward the rotor 34, with its base end fixed to piston 38 and its tip end connected to the other end of rod 37. When rotor 34 rotates, only rod 37 vibrates back and forth in the left-right direction. There are no particular limitations on the length of protrusion 39, but it is preferable that protrusion 39 extend from piston 38 to the rear end (rotor 34 side) of intermediate exterior part 4, or from piston 38 to the rotor 34 side beyond the rear end of intermediate exterior part 4, when piston 38 is pressed all the way in and one end of rod 37 is at position L1 on rotor 34 (see Figure 4).

[0038] In this way, the rod 37 as the connecting body and the piston 38 as the operating body are connected via a protrusion 39 that protrudes from the piston 38 toward the rotating body 34. Therefore, even if the rod 37 swings left and right as the rotating body 34 rotates, the rod 37 is prevented from coming into contact with the inner wall of the device (particularly the intermediate exterior part 4), thereby preventing malfunction of the pollination device 1.

[0039] (Second embodiment of the present invention) The pollination device according to this embodiment will be described with reference to Figure 7. The pollination device according to this embodiment allows the change in the piston movement speed to be set arbitrarily according to the trajectory of one end of the rod. Note that in this embodiment, explanations that overlap with the first embodiment will be omitted.

[0040] The configuration in Figure 7 differs from that in Figure 4 in that a second gear 41 that meshes with a fixed first gear 40 is arranged around the first gear 40, and one end of the rod 37 is connected to the periphery of the second gear 41.

[0041] 7, the rotation drive unit 30 is configured to include a drive source 32, a first gear (sun gear) 40 journaled on a drive shaft 33 of the drive source 32, a second gear (planetary gear) 41 externally meshing with the first gear 40, and an annular third gear (fixed internal gear) 42 fixed on the inner bottom surface of the case 31 and internally meshing with the second gear 41. Note that, as described above, this embodiment will be described taking as an example a case in which a so-called planetary gear mechanism is used as the rotation drive unit 30, but the present invention is not limited to this, and other configurations may be used as long as the rotation drive unit 30 includes at least the first gear 40 and the second gear 41, and the second gear 41 rotates and revolves around the first gear 40.

[0042] A support portion 35 for supporting the rod 37 is provided on the periphery of the second gear 41. In the example shown in this embodiment, the support portion 35 is provided on the second gear 41 near the position where the first gear 40 and the second gear 41 mesh with each other when the second gear 41 and the first gear 40 are arranged in this order from the piston 38 side along the front-rear direction.

[0043] The first gear 40 is rotatably supported on the drive shaft 33, and when the first gear 40 rotates in a rotational direction R2 (counterclockwise) as the drive source 32 is driven, the second gear 41 rotates (spins) between the first gear 40 and the third gear 42 in a rotational direction R3 (clockwise), and also rotates (revolves) around the first gear 40 in a rotational direction R4 (counterclockwise).

[0044] The tip of rod 37 supported by support part 35 of second gear 41, which rotates and revolves as described above, describes a curve called an epicycloid. The epicycloid described by the tip of rod 37 can be changed by changing the size of the reference circle diameter of each gear and the number of teeth.

[0045] In this way, the rotational drive unit 30 comprises a drive source 32, a first gear 40 journalled on the drive shaft 33 of the drive source 32, and a second gear 41 externally meshed with the first gear 40, and the motion conversion unit 36 ​​comprises a rod 37 as a connecting body having one end connected to the second gear 41 of the rotational drive unit 30, and a piston 38 as an actuating body connected to the other end of the rod 37 and moving back and forth within the cylindrical body.Therefore, by changing the size and number of teeth of the first gear 40 and the second gear 41, the movement pattern of the piston 38 can be changed according to the trajectory drawn by one end of the rod 37, and the timing and number of times that the resonance phenomenon occurs can be adjusted, allowing for more efficient artificial pollination.

[0046] (Third embodiment of the present invention) The pollination device according to this embodiment will be described with reference to Figure 8. The pollination device according to this embodiment is capable of suctioning and diffusing pollen at different speeds. Note that in this embodiment, explanations that overlap with the above embodiments will be omitted.

[0047] 8 differs from the configuration of FIG. 4 in that one end of a rod 37 is connected to the periphery of the irregularly shaped cam.

[0048] The rotation drive unit 30 includes a drive source 32 and a cam 43 supported on a drive shaft 33 of the drive source 32 .

[0049] The motion conversion part 36 is configured to include a piston 38 and a follower 44 fixed to the center of the piston 38 and extending toward the cam 43. A plate-like body 45 that abuts the surface of the cam 43 is disposed at the tip of the follower 44, and is biased toward the cam 43 by an elastic body 47 such as a spring supported by an elastic body support part 46 that protrudes from the inner peripheral surface of the intermediate exterior part 4, so that the plate-like body 45 is maintained in a state in which it is always in contact with the cam 43.

[0050] The shape of cam 43 can be changed according to the desired change in the movement speed of piston 38. For example, it is possible to design cam 43 so that the speed at which piston 38 is pulled back is slowed when pollen 111 is sucked in, and the speed at which piston 38 is pushed in is increased when pollen 111 is dispersed. For example, a plate cam can be used as cam 43, and it can be designed based on a cam curve.

[0051] As described above, the rotational drive unit 30 comprises a drive source 32 and a cam 43 journalled on the drive shaft 33 of the drive source 32, and the motion conversion unit 36 ​​comprises a follower 44 which is biased by an elastic body 47 to abut against the cam 43 of the rotational drive unit 30, and a piston 38 which is connected to the follower 44 and acts as an actuator which reciprocates within the cylindrical body. As a result, the manner in which the movement speed of the piston 38 changes can be set according to the shape of the cam 43. For example, the movement speed of the piston 38 can be slowed down when sucking in pollen 111 which is easily damaged by collision with the inner wall of the pollination work unit 2, and the movement speed of the piston 38 can be increased when the pollen 111 is dispersed, thereby more reliably attaching the pollen 111 to the pistil 108.

[0052] As another method for slowing down the speed at which the piston 38 is pulled back and speeding up the speed at which it is pushed in, a quick return mechanism using a crank, such as a Whitworth quick return mechanism, can be used.

[0053] (Fourth embodiment of the present invention) The pollination device according to this embodiment will be described with reference to Figure 9. The pollination device according to this embodiment is capable of adjusting the ease (resistance) of pollen suction and diffusion using a piston. Note that in this embodiment, explanations that overlap with the above embodiments will be omitted.

[0054] The configuration of Figure 9 differs from that of Figure 4 in that the pollinating working part 2 has pleated protrusions on the inner circumferential surface of the cylindrical body.

[0055] The pollination working part 2 has on its inner peripheral surface a plurality of protrusions 48. The protrusions 48 are formed at an angle so as to taper toward the tip of the pollination working part 2, which is on the vanilla flower 100 side. The protrusions 48 may be provided in a ring shape along the circumferential direction of the inner surface of the pollination working unit 2, as shown in Figure 9(b), or may be provided as protrusions on only a portion of the inner surface of the pollination working unit 2, as shown in Figure 9(c). The protrusions 48 shown in Figure 9(c) may be flat, or may be bent or curved toward the tip of the pollination working unit 2. When the protrusions 48 are bent or curved, it is possible to prevent pollen 111 from accumulating between the underside of the protrusions 48, which is at the tip of the pollination working unit 2, and the inner surface of the cylindrical body of the pollination working unit 2.

[0056] When pollen 111 of vanilla flowers 100 is sucked by the pollination device 1 equipped with this pollination working unit 2, Because some of the sucked-in air is blocked by the inclined protrusions 48, it is possible to disrupt the air flow within the tube of the pollination working unit 2 and weaken the suction power of the pollination device 1 on the pollination grains 111. On the other hand, when the pollination device 1 equipped with this pollination working unit 2 is used to spread pollen 111 from vanilla flowers 100, the air flowing through the center of the tube of the pollination working unit 2 draws in air near the protrusions 48 and is discharged to the outside of the pollination device 1, which makes it less likely to disrupt the air flow within the tube of the pollination working unit 2 and strengthens the power of the pollination device 1 to spread the pollen 111, thereby more reliably pollinating the pistils 108 with the pollen 111.

[0057] In this way, the pollination working unit 2 has pleat-like protrusions 48 on the inner surface of the cylindrical body that are inclined toward the tip of the pollination working unit 2. Therefore, when pollen 111 is sucked in, the air flow is disturbed, weakening the suction force, and when pollen 111 is dispersed, the air flow is not disturbed and the discharge force is strengthened. This prevents the pollen 111 from colliding hard with the inner wall of the pollination working unit 2 and being damaged when pollen 111 is sucked in, and allows the pollen 111 to adhere more reliably to the pistil 108 when pollen 111 is dispersed.

[0058] The above-described embodiments can be used in appropriate combination. [Explanation of symbols]

[0059] 1 Pollination device 2 Pollination work section 3 Dense and sparse generator 4. Intermediate exterior 5 Gripping part 6 Pollination switch 7 Control Unit 30 Rotation drive unit 31 cases 32 Power Source 33 Drive shaft 34 Rotating Body 35 Support part 36 Motion conversion unit 37 Rod 38 Piston 39 Protrusion 40 First Gear 41 Second Gear 42 Third Gear 43 Cam 44 Dependent clause 45 Plate-shaped body 46 Elastic support part 47 Elastic Body 48 Protrusion 100 Vanilla Flowers 101 Upper petal 102 Right petal 103 Left petal 104 Lower right petal 105 Lower left petal 106 Lip petal 109 Pile pillar 110 Small beak body 111 Pollen

Claims

1. A plant pollination device having a pipit on the stigma of the pistil, a density generating unit that generates density variations in air to displace the position of the beaklets that separate the stamens and pistils; a pollination unit that comprises a cylindrical body connected to the density generating unit, and that stores at least the stamens, pistils, and beaklets in the cylindrical body, and spreads the density-varying air while diffusing pollen from the stamens to pollinate the pistil; the density generating unit has a rotation drive unit that generates rotational motion, and a motion converting unit that is connected to the rotation drive unit and converts the rotational motion by the rotation drive unit into reciprocating motion to generate density variations in the air, the motion conversion unit has an actuator that reciprocates within the cylindrical body, A pollination device characterized in that the operating body reciprocates within the cylindrical body by pushing the operating body in by the rotational motion of the rotary motion part at a speed faster than the speed at which the operating body is pulled back by the rotational motion of the rotary motion part.

2. 2. The pollination device of claim 1, the rotation drive unit includes a drive source and a rotor supported on a drive shaft of the drive source, A pollination device characterized in that the motion conversion unit comprises a connecting body having one end connected to the rotating body of the rotational drive unit, and an operating body connected to the other end of the connecting body and moving back and forth within the cylindrical body.

3. 3. The pollination device according to claim 2, A pollination device, characterized in that the connecting body and the operating body are connected via a protrusion that protrudes from the operating body toward the rotating body.

4. 2. The pollination device of claim 1, the rotation drive unit includes a drive source, a first gear journaled on a drive shaft of the drive source, and a second gear externally meshed with the first gear, A pollination device characterized in that the motion conversion unit comprises a connecting body having one end connected to the second gear of the rotational drive unit, and an operating body connected to the other end of the connecting body and moving back and forth within the cylindrical body.

5. 2. The pollination device of claim 1, the rotation drive unit includes a drive source and a cam journaled on a drive shaft of the drive source, A pollination device characterized in that the motion conversion unit comprises a follower that is biased by an elastic body to abut against the cam of the rotation drive unit, and an actuator connected to the follower that moves back and forth within the tube of the cylindrical body.

6. 2. The pollination device of claim 1, A pollination device characterized in that the pollination working part has pleat-like protrusions on the inner surface of the cylindrical body that are inclined toward the tip side of the pollination working part.

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