Power transmission device

Abstract

A power transmission device is provided with an input shaft (20), a first output shaft (40), a second output shaft (50), and an output shaft switching unit (25). The input shaft is rotated by input of a driving force. The first output shaft is rotated by the driving force transmitted from the input shaft. The second output shaft is disposed at a different position from the first output shaft and rotates by the driving force transmitted from the input shaft. The output shaft switching part is switched between a first output state and a second output state. The first output state restricts rotation of the second output shaft based on the driving force and allows rotation of the first output shaft based on the driving force. The second output state restricts rotation of the first output shaft based on the driving force and allows rotation of the second output shaft based on the driving force.

Description

[0001] Cross-reference of related applications

[0002] This application is based on Japanese Patent Application No. 2023-125011 filed on July 31, 2023 and Japanese Patent Application No. 2024-113013 filed on July 15, 2024, the contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to a power transmission device capable of outputting driving force generated by a drive source to an output shaft. Background Technology

[0004] Conventionally, multiple electric valves are used in fluid circuits to control the flow of fluid through the circuit. These electric valves are typically configured to transmit the driving force output from a drive source to a specific output shaft. The technology described in Patent Document 1 is known as a technology for such electric valves.

[0005] The electric valve in Patent Document 1 is used as a dehumidification control valve and electronic expansion valve in a refrigeration cycle. The driving force generated by the stepper motor, which is the driving source, is transmitted to the needle valve through various components, thereby adjusting the valve opening. That is, in the technology described in Patent Document 1, the driving force generated by one driving source is only output to a specific output terminal (i.e., the needle valve).

[0006] Existing technical documents

[0007] Patent documents

[0008] Patent Document 1: Japanese Patent Application Publication No. 2020-34140

[0009] Even in Patent Document 1, multiple electric valves are configured in a single fluid circuit (i.e., refrigeration cycle system). In recent years, there has been a desire to miniaturize the space required to mount the fluid circuit. With the technology in Patent Document 1, since each of the multiple electric valves is configured to have a drive source and an output end (valve core), it is difficult to achieve space-saving in the fluid circuit mounting space.

[0010] In view of this, as a space-saving measure to realize the installation space of the fluid circuit, it has been proposed to use an integrated valve with a shared drive source in the structure of the fluid circuit. In other words, it is desirable to develop a power transmission device that can switch the output of the driving force generated by a single drive source between multiple output terminals. Summary of the Invention

[0011] In view of the above-mentioned problems, the present disclosure aims to provide a power transmission device capable of switching the output of driving force generated by a drive source to one of a plurality of output shafts for output.

[0012] One embodiment of the power transmission device disclosed herein includes an input shaft, a first output shaft, a second output shaft, and an output shaft switching unit. The input shaft rotates upon input of a driving force. The first output shaft rotates upon the driving force transmitted from the input shaft. The second output shaft is positioned differently from the first output shaft and rotates upon the driving force transmitted from the input shaft. The output shaft switching unit switches between a first output state and a second output state. The first output state restricts rotation of the second output shaft based on the driving force and allows rotation of the first output shaft based on the driving force. The second output state restricts rotation of the first output shaft based on the driving force and allows rotation of the second output shaft based on the driving force.

[0013] Therefore, by switching between a first output state and a second output state via an output shaft switching unit, the output end of the driving force generated by a single drive source can be appropriately switched to either a first output shaft or a second output shaft. In other words, the outputs from the first and second output shafts can be achieved using only one drive source, thereby enabling miniaturization of the structure employing the power transmission device.

[0014] Furthermore, in the first output state of the output shaft switching unit, the rotation of the second output shaft based on the driving force is restricted, while the rotation of the first output shaft based on the driving force is allowed. In the second output state, the rotation of the first output shaft based on the driving force is restricted, while the rotation of the second output shaft based on the driving force is allowed.

[0015] In other words, regardless of whether it is in the first output state or the second output state, it is in a state of transmitting driving force to the first and second output shafts. Therefore, according to the power transmission device, even if a switch based on the output shaft switching unit occurs, the output mode of the first and second output shafts can be controlled with high precision. Attached Figure Description

[0016] The purposes, other purposes, features, and advantages of this disclosure will become more apparent from the following detailed description with reference to the accompanying drawings.

[0017] Figure 1 This is a structural diagram of the integrated valve of the power transmission device using the first embodiment.

[0018] Figure 2 It is a structural diagram of a refrigeration cycle that includes an integrated valve.

[0019] Figure 3 yes Figure 1 A sectional view of section III-III in the diagram.

[0020] Figure 4 yes Figure 1 A sectional view of section IV-IV in the image.

[0021] Figure 5 This is an explanatory diagram showing the first output state of the integrated valve according to the first embodiment.

[0022] Figure 6 This is an explanatory diagram showing the second output state of the integrated valve according to the first embodiment.

[0023] Figure 7 This is a structural diagram of the integrated valve of the power transmission device using the second embodiment.

[0024] Figure 8 This is an explanatory diagram of the structure of the output shaft switching unit in the second embodiment.

[0025] Figure 9 This is a structural diagram of the integrated valve of the power transmission device using the third embodiment.

[0026] Figure 10 This is a structural diagram of the integrated valve of the power transmission device using the fourth embodiment.

[0027] Figure 11 yes Figure 10 A sectional view of section XI-XI in the diagram.

[0028] Figure 12 This is an explanatory diagram showing the structure of the resistance generating section in the fourth embodiment.

[0029] Figure 13 This is a cross-sectional view showing the resistance generating section in the fourth embodiment.

[0030] Figure 14 This is an explanatory diagram showing the first output state of the integrated valve according to the fourth embodiment.

[0031] Figure 15 This is an explanatory diagram showing the second output state of the integrated valve according to the fourth embodiment.

[0032] Figure 16 This is a cross-sectional view showing a first modified example of the resistance generating part in this disclosure.

[0033] Figure 17 This is a cross-sectional view showing a second modified example of the resistance generating part in this disclosure. Detailed Implementation

[0034] Hereinafter, several embodiments for implementing this disclosure will be described with reference to the accompanying drawings. In each embodiment, the same reference numerals may be used to denote parts corresponding to those described in previous embodiments, and repeated descriptions may be omitted. In each embodiment, if only a part of the structure is described, other previously described embodiments may be applied to the other parts. The combination of parts that can be specifically combined is not limited to those explicitly described; even if not explicitly described, the embodiments can be partially combined with each other as long as no obstacle to combination is created.

[0035] (First Implementation)

[0036] The following is for reference Figures 1-6 An embodiment of the power transmission device of this disclosure will be described. In the first embodiment, the power transmission device of this disclosure is applied to an integrated valve V obtained by integrating multiple valve devices in a fluid circuit. Figure 1 As shown, the integrated valve V is configured to switch the output end of the driving force output by the drive motor 11 between the first pressure reducing section VA side and the second pressure reducing section VB side through the power transmission device 1, and transmit the driving force.

[0037] like Figure 2 As shown, in the first embodiment, the first pressure reducing unit VA and the second pressure reducing unit VB constitute an integrated valve V in the refrigeration cycle 100, which is a vapor compression type refrigeration cycle. The integrated valve V has the function of integrating two expansion valves that are connected in parallel with each other.

[0038] Specifically, refer to Figure 2 The structure of the refrigeration cycle 100 according to the first embodiment will be described. The refrigeration cycle 100 includes a compressor 110, a condenser 111, a first pressure reducing unit VA, a second pressure reducing unit VB, a first evaporator 113, and a second evaporator 114.

[0039] In the first embodiment, the compressor 110 is an electric compressor that draws in refrigerant, compresses it, and then discharges it. The refrigeration cycle 100 is a subcritical cycle in which the refrigerant pressure on the high-pressure side does not exceed the critical pressure of the refrigerant. As the refrigerant circulating in the vapor compression refrigeration cycle, a Freon-type refrigerant (e.g., R134a) is used.

[0040] The condenser 111 dissipates heat from the refrigerant discharged from the compressor 110, thereby condensing the refrigerant. A refrigerant branch 112 is provided on the refrigerant outlet side of the condenser 111. The refrigerant branch 112 branches the refrigerant flow from the condenser 111 into a refrigerant flow toward the first pressure reducing section VA and a refrigerant flow toward the second pressure reducing section VB.

[0041] The first pressure-reducing section VA is part of the integrated valve V in the first embodiment, and reduces the pressure on a portion of the refrigerant condensed in the condenser 111. A first evaporator 113 is connected downstream of the refrigerant flow in the first pressure-reducing section VA. The first evaporator 113 causes the refrigerant, after being depressurized in the first pressure-reducing section VA, to absorb external heat, thereby causing the refrigerant to evaporate.

[0042] Furthermore, the second pressure-reducing section VB, like the first pressure-reducing section VA, forms part of the integrated valve V, reducing the pressure on another portion of the refrigerant condensed in the condenser 111. A second evaporator 114 is connected downstream of the refrigerant flow in the second pressure-reducing section VB. The second evaporator 114 causes the refrigerant, after being pressure-reduced in the second pressure-reducing section VB, to absorb external heat, thereby causing the refrigerant to evaporate.

[0043] A refrigerant manifold 115 is connected to the downstream side of the refrigerant flow of the first evaporator 113 and the downstream side of the refrigerant flow of the second evaporator 114. The refrigerant manifold 115 allows the refrigerant flow from the first evaporator 113 to merge with the refrigerant flow from the second evaporator 114 and flow out toward the suction port side of the compressor 110.

[0044] like Figure 2 As shown, the integrated valve V in the first embodiment is composed of a portion extending from the inlet side of the refrigerant branch 112 in the refrigeration cycle 100 to the outlet side of the first pressure reducing section VA and the second pressure reducing section VB. That is, the integrated valve V has the functions of the refrigerant branch 112, the first pressure reducing section VA, and the second pressure reducing section VB.

[0045] Next, the specific structure of the integrated valve V in the first embodiment will be described with reference to the accompanying drawings. Figure 1 As shown, the integrated valve V has a drive unit 10 and a main body 30. The drive unit 10 generates driving force, and the main body 30 has a refrigerant flow path including a first pressure reducing unit VA and a second pressure reducing unit VB. The integrated valve V also includes the power transmission device 1 of this disclosure. The power transmission device 1 uses magnetic force to switch the rotational driving force generated by the drive unit 10 to either the first pressure reducing unit VA side or the second pressure reducing unit VB side.

[0046] Here, the integrated valve V is configured vertically in the refrigeration cycle 100. Vertical configuration means that the axial direction of the valve cores in the first pressure reducing unit VA and the second pressure reducing unit VB is approximately parallel to the direction of gravity, and the drive unit 10 is positioned above the main body 30.

[0047] like Figure 1As shown, the drive unit 10 constitutes the upper part of the integrated valve V and is adjacent to the upper surface of the main body 30. The drive unit 10 includes a drive motor 11, an input shaft 20, and an output shaft switching unit 25. The drive motor 11 generates a rotational driving force through the supply of electricity. The input shaft 20 is input with the driving force generated by the drive motor 11. The output shaft switching unit 25 is used to switch the output end of the driving force input from the input shaft 20.

[0048] The drive motor 11 is a motor that can be driven by position feedback control, including a rotor 12, a stator 13, and a shaft 14. The drive motor 11 can be, for example, a three-phase brushless motor or a stepper motor.

[0049] Shaft 14 is supported by a motor retaining plate 15 forming the upper surface of the integrated valve V, enabling it to rotate. A rotor 12 is mounted on shaft 14, and shaft 14 rotates integrally with rotor 12. Shaft 14 serves as both the output shaft of drive motor 11 and part of the input shaft in power transmission device 1.

[0050] The stator 13 is fixed to a motor housing or motor retaining plate 15 (not shown) and has stator coils. The rotor 12 is cylindrical, and the stator 13 is disposed inside the rotor 12. Furthermore, multiple sets of pairs of magnets consisting of N poles and S poles are arranged circumferentially on the rotor 12. For example, four N poles and four S poles can be arranged on each circumferential surface of the rotor 12, setting the number of poles Pr of the rotor 12 to 8. The stator 13 and rotor 12 output a driving force to rotate the shaft 14 via electromagnetic force.

[0051] On the upper part of the integrated valve V, a motor retaining plate 15 is disposed in the center of the output shaft switching section 25, which is arranged in a ring shape. As described above, the motor retaining plate 15 supports the shaft 14 of the drive motor 11 so that it can rotate.

[0052] Furthermore, the drive unit 10 houses a circuit unit (not shown). The circuit unit has a circuit board on which multiple electronic components for controlling the drive motor 11 are mounted. Further, the circuit unit is capable of performing control related to the switching action of the output shaft in the integrated valve V (i.e., control of the output shaft switching unit 25).

[0053] An input shaft 20 is engaged at the lower end of the shaft 14 of the drive motor 11. The input shaft 20 is mounted such that its shaft core aligns with the extension line of the rotating shaft core of the shaft 14. Therefore, the input shaft 20 rotates integrally with the rotor 12 and the shaft 14 by being driven by the drive motor 11.

[0054] An input-side magnet 21 is formed at the lower end of the input shaft 20. As described above, the input shaft 20 rotates together with the rotor 12 and the like by the rotational driving force generated by the input drive motor 11. Since the input-side magnet 21 is integrally formed with the input shaft 20, it rotates with the input of the rotational driving force generated by the drive motor 11.

[0055] like Figure 1 , Figure 3 As shown, the input-side magnet 21 is formed in a disk shape at the lower end of the input shaft 20, and its side surface (i.e., the outer peripheral surface of the disk shape) is provided with at least one pair of magnets consisting of an N pole 21N and an S pole 21S along the circumferential direction. In this example, there is one N pole 21N and one S pole 21S, so the number of poles Pin of the input-side magnet 21 is 2.

[0056] On the upper part of the integrated valve V, the output shaft switching section 25 is arranged to surround the drive motor 11. As described above, the output shaft switching section 25 is a structure for switching the output end of the rotational driving force generated by the drive motor 11 to either the first output shaft 40 or the second output shaft 50, and it has a switching coil 26 and a switching yoke 27.

[0057] The switching coil 26 is a DC coil arranged in a ring on the partition wall 36 constituting the upper surface of the integrated valve V. The switching coil 26 can switch the current flow in a predetermined direction and the current flow in the opposite direction.

[0058] The switching yoke 27 is a magnetic yoke configured to connect the inner and outer diameter sides of the annular switching coil 26 via the upper part of the switching coil 26. The switching yoke 27 can also be described as an iron annular component with a slot shape that is open at the bottom. In this case, the switching coil 26 is disposed inside the slot shape.

[0059] When a direct current is applied to the switching coil 26 configured as described above to generate a magnetic field, the inner diameter end and the outer diameter end of the switching yoke 27 will generate magnetic forces of different polarities. In the following description, the outer diameter end of the switching coil 26 will be referred to as the first magnetic force generating part 27A, and the inner diameter end of the switching coil 26 will be referred to as the second magnetic force generating part 27B.

[0060] When the switching coil 26 is energized, the magnetic field generated by the switching coil 26 causes the first magnetic force generating section 27A and the second magnetic force generating section 27B to generate magnetic forces respectively. The polarity of the magnetic forces generated by the first magnetic force generating section 27A and the second magnetic force generating section 27B is controlled by the direction of the current flowing through the switching coil 26.

[0061] For example, when a current in a predetermined direction is supplied to the switching coil 26, the magnetic force generated by the first magnetic force generating unit 27A is the S pole, and the magnetic force generated by the second magnetic force generating unit 27B is the N pole. Furthermore, when a current in the opposite direction to the predetermined direction is supplied to the switching coil 26, the magnetic force generated by the first magnetic force generating unit 27A is the N pole, and the magnetic force generated by the second magnetic force generating unit 27B is the S pole.

[0062] Furthermore, the first magnetic force generating unit 27A and the second magnetic force generating unit 27B are respectively installed in contact with the upper surface of the partition wall 36, so that the magnetic force generated by energizing the switching coil 26 can be applied to the lower part of the partition wall 36.

[0063] like Figure 1 As shown, a partition wall 36 is disposed below the drive unit 10, which includes a drive motor 11, an input shaft 20, and an output shaft switching unit 25. The partition wall 36 separates the space on the drive unit 10 side of the integrated valve V and power transmission device 1 from the space on the main body 30 side, which includes the first output shaft 40, and is a sealing component that closes the space on the main body 30 side.

[0064] Since the space on the main body 30 side contains a space for the refrigerant circulating in the integrated valve V in the refrigeration cycle 100, the partition wall 36 prevents the refrigerant (high-pressure refrigerant) circulating on the main body 30 side from leaking into the space on the drive unit 10 side.

[0065] The partition wall 36 is made of a non-magnetic material or a component with a specified magnetic permeability. Specifically, the partition wall 36 is formed of stainless steel that acquires magnetism by work hardening austenitic stainless steel such as SUS304, aluminum, or SUS305 into martensite.

[0066] As described above, the partition wall 36 is joined to the upper surface of the main body 30, thereby enclosing the space formed inside the main body 30. That is, the partition wall 36 and the main body 30 form a pressure vessel with pressure resistance.

[0067] like Figure 1 As shown, the partition wall 36 is formed as a disc with a central portion recessed downwards, and has a closed cylindrical portion 36A, a closed bottom portion 36B, and a closed outer edge portion 36C. In order to improve pressure resistance, the partition wall 36 of the first embodiment has the closed cylindrical portion 36A, the closed bottom portion 36B, and the closed outer edge portion 36C integrally formed.

[0068] The closed cylindrical portion 36A is a cylindrical portion on the side of the central recessed portion that constitutes the partition wall 36. For example... Figure 1 , Figure 3 As shown, the closed cylindrical part 36A is located on the outer diameter side of the input magnet 21.

[0069] The closed bottom portion 36B is located below the input magnet 21, sealing the lower end of the closed cylindrical portion 36A. This divides the internal space of the closed cylindrical portion 36A from the space on the main body portion 30 side. The closed outer edge portion 36C is a plate-shaped portion formed by expanding radially outward from the upper end of the closed cylindrical portion 36A. The closed outer edge portion 36C is fixed to the upper surface of the main body portion 30.

[0070] Furthermore, the closed bottom portion 36B can also be formed as a circular plate with its central portion curving downwards. Additionally, the corner formed by the boundary between the closed cylindrical portion 36A and the closed bottom portion 36B can be non-right angles, but rather an arc shape with a specified radius of curvature. By employing these shapes and processes, the pressure resistance of the partition wall 36 can be improved.

[0071] like Figure 1 As shown, the main body 30 constituting the lower portion of the integrated valve V has a mechanism housing 35 and a flow path forming portion 60. The mechanism housing 35 houses various mechanisms for realizing the pressure reduction function of the first pressure reducing unit VA and the second pressure reducing unit VB, and the flow path forming portion 60 forms a refrigerant flow path for the refrigerant of the refrigeration cycle 100 to flow through. The mechanism housing 35 is disposed in the upper portion of the main body 30, and the flow path forming portion 60 constitutes the lower portion of the main body 30. The internal space formed in the main body 30 (i.e., the mechanism housing 35 and the partition wall 36) is equivalent to an example of a housing space.

[0072] As described above, the mechanism housing 35 of the integrated valve V houses various components for realizing the pressure reduction function of the first pressure reduction unit VA and various components for realizing the pressure reduction function of the second pressure reduction unit VB.

[0073] The various components used to implement the pressure reduction function of the first pressure reducing unit VA include a first output shaft 40, a first bearing component 47, a first threaded component 48, and a first valve core 49. Additionally, the various components used to implement the pressure reduction function of the second pressure reducing unit VB include a second output shaft 50, a second bearing component 57, a second threaded component 58, and a second valve core 59.

[0074] In the first embodiment, the first output shaft 40 of the integrated valve V rotates by the rotational driving force generated by the drive unit 10, and is used to output the rotational driving force to the first valve core 49 constituting the first pressure reducing unit VA.

[0075] like Figure 1 As shown, the first output shaft 40 is configured to have a rotation axis on the extension line of the rotation axis of the aforementioned shaft 14 and input shaft 20, and has a large diameter portion 41 and a small diameter portion 42. Furthermore, the rotation axis of the first output shaft 40 is also configured to coincide with the center of the output shaft switching portion 25, which is formed in a ring shape.

[0076] The large-diameter portion 41 is formed in a cylindrical shape and constitutes the upper part of the first output shaft 40. Therefore, the large-diameter portion 41 is housed within the mechanism housing portion 35 in the main body portion 30. Furthermore, the inner diameter of the large-diameter portion 41 is formed to be at least larger than the outer diameter of the closed cylindrical portion 36A of the partition wall 36. In addition, the radial dimension of the large-diameter portion 41 is formed to be the same as the radial dimension of the first magnetic force generating portion 27A in the output shaft switching portion 25.

[0077] An output-side magnet 45 is disposed on the upper part of the large-diameter portion 41. For example... Figure 1 , Figure 3 As shown, the output-side magnet 45 is formed into the same cylindrical shape as the large-diameter portion 41, and is configured to have multiple pairs of magnets consisting of N poles 45N and S poles 45S arranged at approximately equal intervals along the circumference. In this example, there are 20 N poles 45N and 20 S poles 45S, so the number of poles Pf of the output-side magnet 45 is 40. The number of poles of the output-side magnet 45 is different from that of the input-side magnet 21, and it can be called a multipole magnet with more poles than the input-side magnet 21.

[0078] As described above, an input-side magnet 21 for the input shaft 20 is disposed on the inner diameter side of the enclosed cylindrical portion 36A in the partition wall 36. An output-side magnet 45 is disposed on the outer diameter side of the enclosed cylindrical portion 36A. Figure 1 , Figure 3 As shown, the output magnet 45 is positioned opposite the input magnet 21 through the enclosed cylindrical portion 36A of the partition wall 36. Therefore, the rotational driving force input to the input shaft 20 can be transmitted to the first output shaft 40 by the magnetic force acting between the input magnet 21 and the output magnet 45.

[0079] Furthermore, a first switching magnet 46 is disposed on the upper end face of the large-diameter portion 41. The first switching magnet 46 is disposed with either an S pole or a N pole (e.g., an S pole) on its upper side and is in a ring shape with the same radial dimension as the large-diameter portion 41. Therefore, as... Figure 1 As shown, the first switching magnet 46, located at the upper end of the large-diameter portion 41, faces the first magnetic force generating portion 27A of the output shaft switching portion 25 across the closed outer edge portion 36C of the partition wall 36. Therefore, the magnetic force generated by the first magnetic force generating portion 27A can act on the first switching magnet 46, thereby controlling the operation of the first output shaft 40.

[0080] The small-diameter portion 42 of the first output shaft 40 is formed into a cylindrical shape with a smaller diameter than the large-diameter portion 41, and extends downward from the lower side of the large-diameter portion 41. The second output shaft 50, etc., described later, is disposed inside the small-diameter portion 42.

[0081] A first valve core 49 is disposed at the lower end of the small diameter portion 42. The first valve core 49 is equivalent to the valve core in the first pressure reducing portion VA, and is formed into a cylindrical shape with an outer diameter smaller than the inner diameter of the small diameter portion 42.

[0082] like Figure 1 , Figure 4 As shown, a groove 43 is formed at the lower end of the small diameter portion 42. The groove 43 is formed by recessing the inner surface of the cylindrical small diameter portion 42 into a groove shape, and extends upward from the lower edge of the groove 43.

[0083] Furthermore, a protrusion 49A is formed on the upper end side of the first valve core 49. The protrusion 49A is formed by protruding radially outward from the outer surface of the cylindrical first valve core 49, extending downward from the upper edge of the first valve core 49. Moreover, the outer diameter of the protrusion 49A is smaller than the inner diameter of the groove 43. Therefore, the protrusion 49A of the first valve core 49 can be fitted into the groove 43 of the small-diameter portion 42. At this time, a certain gap is provided between the inner surface of the groove 43 and the outer surface of the protrusion 49A.

[0084] Thus, through the coordinated action of the groove 43 and the protrusion 49A, the first valve core 49 can rotate with the rotation of the first output shaft 40, thereby transmitting the rotational driving force transmitted to the first output shaft 40 to the first valve core 49. Furthermore, through the coordinated action of the groove 43 and the protrusion 49A, the first output shaft 40 can move relative to the first valve core 49 in the rotational axis (i.e., the vertical direction).

[0085] like Figure 1 As shown, a first bearing member 47 is disposed at the lower part of the mechanism receiving portion 35 formed in the main body portion 30. The first bearing member 47 is fixed to the lower part of the mechanism receiving portion 35 of the main body portion 30, supporting the first output shaft 40 so that it can rotate. In addition, the first bearing member 47 allows the first output shaft 40 to move in the vertical direction within a predetermined range.

[0086] A first threaded component 48 is disposed below the first bearing component 47. The first threaded component 48 is fixed within the first valve chamber 65 of the flow path forming portion 60 constituting the main body portion 30 and has a threaded hole. An internal thread shape is formed inside the threaded hole of the first threaded component 48, and an external thread shape is formed on the outer peripheral surface of the first valve core 49.

[0087] The external thread of the first valve core 49 engages with the threaded hole formed in the first threaded component 48 to form a threaded mechanism. Thus, when the first valve core 49 rotates, the first valve core 49 can move in the rotational axis, thereby enabling adjustment of the opening degree in the first pressure reducing section VA.

[0088] Furthermore, the second output shaft 50 of the integrated valve V rotates by the rotational driving force generated by the drive unit 10, and is used to output the rotational driving force to the second valve core 59 constituting the second pressure reducing unit VB.

[0089] like Figure 1 As shown, the second output shaft 50 is configured to have a rotation axis on the extension line of the rotation axis of the aforementioned shaft 14 and input shaft 20, and includes a cylindrical portion 51 and a shaft portion 52. Furthermore, the rotation axis of the second output shaft 50 is configured to coincide with the center of the output shaft switching portion 25, which is formed in an annular shape, and also with the rotation axis of the first output shaft 40.

[0090] The cylindrical portion 51 is formed in a cylindrical shape and constitutes the upper part of the second output shaft 50. The cylindrical portion 51 is disposed on the inner diameter side of the second output shaft 50, located on the outer diameter side of the closed cylindrical portion 36A of the partition wall 36. Therefore, the cylindrical portion 51 is housed within the mechanism housing portion 35 in the main body portion 30. The radial dimension of the cylindrical portion 51 is formed to be the same as the radial dimension of the second magnetic force generating portion 27B in the output shaft switching portion 25.

[0091] A magnetic flux modulation section 55 is disposed on the upper part of the cylindrical section 51. The magnetic flux modulation section 55 is a magnetic modulation section that modulates the magnetic flux between the input side magnet 21 and the output side magnet 45, and is integrally formed with the second output shaft 50.

[0092] like Figure 1 , Figure 3 As shown, the flux modulation section 55, like the cylindrical section 51, is cylindrical in shape and has multiple magnetic sections 55A and multiple non-magnetic sections 55B. The magnetic sections 55A and non-magnetic sections 55B are fan-shaped, and the magnetic sections 55A are arranged at approximately equal intervals along the circumference. The non-magnetic sections 55B are disposed between the magnetic sections 55A. For example, the magnetic sections 55A are formed of a soft magnetic material (e.g., ferrous metal), and the non-magnetic sections 55B are formed of a non-magnetic material (e.g., stainless steel or resin).

[0093] The number of poles Pp of the flux modulation unit 55 is the same as the sum of the number of poles Pin of the input magnet 21 and the number of poles Pf of the output magnet 45. In the first embodiment, the number of poles Pin of the input magnet 21 is 2, and the number of poles Pf of the output magnet 45 is 40, therefore the number of poles Pp of the flux modulation unit 55 is 42. That is, the flux modulation unit 55 is composed of 21 magnetic parts 55A and 21 non-magnetic parts 55B.

[0094] As described above, an input-side magnet 21 for the input shaft 20 is disposed on the inner diameter side of the closed cylindrical portion 36A in the partition wall 36. An output-side magnet 45 for the first output shaft 40 is disposed radially outside the flux modulation portion 55 of the second output shaft 50. Figure 1 , Figure 3As shown, the flux modulation unit 55 is configured to face the input-side magnet 21 and the output-side magnet 45 via a closed cylindrical portion 36A of the partition wall 36. Therefore, the flux modulation unit 55 can modulate the magnetic flux between the input-side magnet 21 and the output-side magnet 45.

[0095] Furthermore, when the rotation of the second output shaft 50 stops, the rotational driving force input to the input shaft 20 can be transmitted to the second output shaft 50 through the magnetic force acting between the input side magnet 21, the output side magnet 45 and the flux modulation unit 55.

[0096] Furthermore, a second switching magnet 56 is disposed on the upper end face of the cylindrical portion 51. The second switching magnet 56 is disposed with either an S pole or a N pole (e.g., an S pole) on its upper side and is annular with the same radial dimension as the cylindrical portion 51. The polarity of the upper surface of the second switching magnet 56 is configured to be the same as that of the upper surface of the first switching magnet 46.

[0097] like Figure 1 As shown, the second switching magnet 56, located at the upper end of the cylindrical portion 51, faces the second magnetic force generating portion 27B of the output shaft switching portion 25 across the closed outer edge 36C of the partition wall 36. Therefore, the magnetic force generated by the second magnetic force generating portion 27B of the output shaft switching portion 25 can act on the second switching magnet 56, thereby controlling the operation of the second output shaft 50.

[0098] The shaft portion 52 of the second output shaft 50 is a shaft-shaped portion extending downward from the lower part of the cylindrical portion 51, and is integrally formed with the cylindrical portion 51. As described above, the shaft portion 52 is inserted into the inner side of the small-diameter portion 42 of the first output shaft 40, which is formed in a cylindrical shape. A second valve core 59 is disposed at the lower end of the shaft portion 52. The second valve core 59 corresponds to the valve core in the second pressure reducing section VB, constituting the valve core of a so-called needle valve.

[0099] like Figure 1 As shown, a through hole 52A is formed at the lower end of the shaft portion 52. The through hole 52A is provided to extend axially upward from the lower end of the shaft portion 52 in a manner that includes the rotating shaft of the second output shaft 50.

[0100] Furthermore, a protruding piece 59A is formed on the upper end side of the second valve core 59. The protruding piece 59A protrudes along the rotation axis of the second valve core 59, extending upward from the upper end of the second valve core 59. The outer diameter of the protruding piece 59A is smaller than the inner diameter of the insertion hole 52A formed in the shaft portion 52. Therefore, the protruding piece 59A of the second valve core 59 can be inserted into the insertion hole 52A in the shaft portion 52, and the protruding piece 59A of the second valve core 59 can engage with the insertion hole 52A of the shaft portion 52. At this time, a predetermined interval can be provided between the inner surface of the insertion hole 52A and the outer surface of the protruding piece 59A.

[0101] Therefore, through the coordinated action of the through hole 52A and the protruding piece 59A, the second valve core 59 can rotate as the second output shaft 50 rotates, thereby transmitting the rotational driving force transmitted to the second output shaft 50 to the second valve core 59. Furthermore, through the coordinated action of the through hole 52A and the protruding piece 59A, the second output shaft 50 can move relative to the second valve core 59 in the rotational axis (i.e., the vertical direction).

[0102] like Figure 1 As shown, a second bearing member 57 is disposed at the lower part of the mechanism housing 35 formed in the main body 30 and above the first bearing member 47. The second bearing member 57 is fixed relative to the main body 30 between the first output shaft 40 and the second output shaft 50, and supports the second output shaft 50 so that it can rotate. In addition, the second bearing member 57 allows the second output shaft 50 to move in the vertical direction within a predetermined range.

[0103] A second threaded component 58 is disposed below the second bearing component 57, the first bearing component 47, and the first threaded component 48. The second threaded component 58 is fixed inside the second valve chamber 67 located below the first valve chamber 65 and has a threaded hole. An internal thread is formed inside the threaded hole of the second threaded component 58, and an external thread is formed on the outer peripheral surface of the second valve core 59.

[0104] The external thread of the second valve core 59 engages with the threaded hole formed in the second threaded component 58 to form a threaded mechanism. Thus, when the second valve core 59 rotates, it can move in the rotational axis, thereby enabling adjustment of the opening degree in the second pressure reducing section VB.

[0105] like Figure 1 As shown, a flow path forming section 60 is disposed on the lower side of the main body 30 of the integrated valve V. The flow path forming section 60 is a portion that forms a refrigerant flow path 62 for allowing the refrigerant circulating in the refrigeration cycle 100 to flow into and out of the first pressure reducing section VA and the second pressure reducing section VB of the integrated valve V.

[0106] Furthermore, the main body 30 of the first embodiment constitutes the main body (i.e., part of the housing) of the integrated valve V and is formed of a casting material (e.g., AC4C) using an aluminum-silicon-magnesium alloy.

[0107] A flow path forming section 60 of the main body 30 has an inlet 61, a first outlet 63, and a second outlet 64, and a refrigerant flow path 62 is formed connecting them. The inlet 61 is formed on the left side of the main body 30. Figure 2 As shown, in the integrated valve V of the first embodiment, the inlet 61 is connected to the outlet side of the condenser 111 of the refrigeration cycle 100.

[0108] Furthermore, a first outlet 63 and a second outlet 64 are formed on the right side of the main body 30. The first outlet 63 is formed above the second outlet 64 on the right side of the main body 30. Figure 2 As shown, the first outlet 63 is connected to the refrigerant inlet side of the first evaporator 113 in the refrigeration cycle 100, and the second outlet 64 is connected to the refrigerant inlet side of the second evaporator 114 in the refrigeration cycle 100.

[0109] like Figure 1 As shown, in the main body 30, a first valve chamber 65 and a second valve chamber 67 are formed between the inlet 61 and the first outlet 63 and the second outlet 64. The first valve chamber 65 is a valve chamber that houses the first valve core 49, etc., which constitutes the first pressure reducing section VA, and is formed below the mechanism housing 35. The first valve chamber 65 communicates with the mechanism housing 35 located above it.

[0110] A first threaded component 48 is fixed to the first valve chamber 65. Therefore, the first valve core 49 moves along the rotational axis inside the first valve chamber 65 through a threaded mechanism that cooperates with the first threaded component 48.

[0111] A first valve seat 66 is formed in the lower part of the first valve chamber 65, which can contact the first valve core 49 that moves vertically. The integrated valve V can adjust the throttling opening in the first pressure reducing section VA by adjusting the relative position of the first valve core 49 with respect to the first valve seat 66. A refrigerant flow path 62 extending toward the first flow outlet 63 is connected near the first valve seat 66 in the first valve chamber 65.

[0112] Furthermore, the second valve chamber 67 is a valve chamber that houses the second valve core 59, which constitutes the second pressure-reducing section VB, and is formed below the first valve chamber 65. The second valve chamber 67 communicates with the first valve chamber 65 located above it.

[0113] A second threaded component 58 is fixed to the second valve chamber 67. Therefore, the second valve core 59 moves along the rotational axis inside the second valve chamber 67 via a threaded mechanism that cooperates with the second threaded component 58.

[0114] A second valve seat 68 is formed in the lower part of the second valve chamber 67, which can contact the vertically movable second valve core 59. The integrated valve V can adjust the throttling opening in the second pressure reducing section VB by adjusting the relative position of the second valve core 59 with respect to the second valve seat 68. A refrigerant flow path 62 extending toward the second flow outlet 64 is connected near the second valve seat 68 in the second valve chamber 67.

[0115] Furthermore, in the integrated valve V, the portion that connects the first valve chamber 65 and the second valve chamber 67 constitutes the refrigerant branch 112 in the refrigeration cycle 100.

[0116] In an integrated valve V configured in this way, the pressure reduction is adjusted by switching between a first output state in which the pressure reduction amount of the first pressure reducing unit VA can be adjusted via the first output shaft 40 and a second output state in which the pressure reduction amount of the second pressure reducing unit VB can be adjusted via the second output shaft 50.

[0117] The following description, with reference to the accompanying drawings, explains the switching action of the integrated valve V to the first output state and the second output state, as well as the adjustment action of the pressure reduction.

[0118] First, refer to Figure 5 This describes the first output state of the integrated valve V and the power transmission device 1. The first output state is a state that allows the output based on the driving force of the first output shaft 40 while restricting the output based on the driving force of the second output shaft 50, through the operation control of the drive motor 11 and the output shaft switching unit 25.

[0119] Specifically, when switching to the first output state, a pre-set direct current in a predetermined direction is supplied to the switching coil 26 of the output shaft switching unit 25. By supplying direct current in the predetermined direction, a magnetic field is generated in the switching coil 26, causing magnetic forces to be generated at both ends of the switching yoke 27 in the output shaft switching unit 25. In the first output state, the magnetic force generated by the first magnetic force generating unit 27A has the S pole polarity, and the magnetic force generated by the second magnetic force generating unit 27B has the N pole polarity.

[0120] The magnetic forces generated by the first magnetic force generating unit 27A and the second magnetic force generating unit 27B act on the constituent components of the mechanism housing 35 via the closed outer edge 36C of the partition wall 36. For example... Figure 1 As shown, the first magnetic force generating part 27A is opposite to the first switching magnet 46 across the closed outer edge part 36C, and the second magnetic force generating part 27B is opposite to the second switching magnet 56 across the closed outer edge part 36C.

[0121] As described above, the first switching magnet 46 is mounted on the first output shaft 40 with its upper side facing S-pole. Therefore, in the first output state, when the first magnetic force generating unit 27A generates magnetic force, it will move downward along the axial direction of the first output shaft 40, etc., away from the output shaft switching unit 25 due to the repulsive effect of the magnetic force.

[0122] On the other hand, the second switching magnet 56 is also mounted on the second output shaft 50 with its upper side facing S-pole. Therefore, in the first output state, when the second magnetic force generating part 27B generates a magnetic force, the second output shaft 50 is attracted by the magnetic force and moves upward along the axial direction of the second output shaft 50, etc. As a result, the upper end surface of the second output shaft 50 is tightly fitted to the closed outer edge 36C of the partition wall 36 by the magnetic force of the second magnetic force generating part 27B.

[0123] In this state, when the drive motor 11 is driven, the rotational driving force generated by the drive motor 11 is transmitted to the first output shaft 40 and the second output shaft 50 through the magnetic interaction between the input side magnet 21, the flux modulation unit 55 and the output shaft switching unit 25.

[0124] In the first output state, due to the magnetic force generated by the second magnetic force generating unit 27B, the second output shaft 50 is attracted to the output shaft switching unit 25 side and comes into close contact with the partition wall 36. Therefore, the magnetic force generated by the second magnetic force generating unit 27B and the frictional force generated between the partition wall 36 and the second output shaft 50 act as resistance to the rotational driving force transmitted from the drive motor 11 to the second output shaft 50.

[0125] Here, in the first output state, the relationship between the driving force transmitted to the second output shaft 50 and the resistance caused by the output shaft switching unit 25, etc., is set such that the resistance caused by the output shaft switching unit 25, etc., is greater than the driving force transmitted to the second output shaft 50. Therefore, although the second output shaft 50 in the first output state is in a state where the driving force generated by the drive motor 11 is transmitted, it is still in a state where rotation is hindered due to the resistance caused by the output shaft switching unit 25, etc.

[0126] On the other hand, in the first output state, due to the magnetic force generated by the first magnetic force generating unit 27A, the first output shaft 40 moves away from the output shaft switching unit 25 and leaves the partition wall 36. Therefore, the resistance to the rotational driving force transmitted from the drive motor 11 to the first output shaft 40 is not affected by magnetic force or friction.

[0127] Therefore, in the first output state, the rotation caused by the driving force transmitted to the first output shaft 40 is not hindered by the resistance caused by the output shaft switching unit 25, etc. Therefore, in the first output state, the first output shaft 40 is in a state where the driving force generated by the drive motor 11 is transmitted and can output to the first valve core 49, which is the output end.

[0128] Furthermore, in Figure 5 In the first output state shown, when the drive motor 11 is driven, the rotational driving force generated by the drive motor 11 is transmitted to the first output shaft 40 and the second output shaft 50 through the magnetic interaction between the input-side magnet 21, the flux modulation unit 55, and the output shaft switching unit 25. At this time, the second output shaft 50 remains stationary due to the magnetic force of the output shaft switching unit 25, while the first output shaft 40 decelerates and rotates relative to the rotation of the drive motor 11 at a preset reduction ratio. In the first embodiment, based on the structure of the input-side magnet 21, the flux modulation unit 55, and the output-side magnet 45, the reduction ratio is 20.

[0129] Thus, according to the integrated valve V of this first embodiment, by operating the drive motor 11 in the first output state, the first output shaft 40 and the first valve core 49 can be moved. That is, by controlling the rotation direction of the drive motor 11 in the first output state, the first valve core 49 can be brought closer to or separated from the first valve seat 66, thereby enabling adjustment of the throttling opening of the first pressure reducing section VA.

[0130] Next, refer to Figure 6 The second output state of the integrated valve V and the power transmission device 1 will be explained. The second output state is a state in which the output of the driving force based on the first output shaft 40 is restricted while the output of the driving force based on the second output shaft 50 is allowed by controlling the operation of the drive motor 11 and the output shaft switching unit 25.

[0131] Specifically, when switching to the second output state, a direct current in the opposite direction to that in the first output state is supplied to the switching coil 26 of the output shaft switching section 25. By supplying the direct current, a magnetic field is generated in the switching coil 26, causing magnetic forces to be generated at both ends of the switching yoke 27 in the output shaft switching section 25. In the second output state, because a direct current in the opposite direction is supplied, the polarity of the magnetic force generated by the first magnetic force generating section 27A is N (northeast), and the polarity of the magnetic force generated by the second magnetic force generating section 27B is S (south).

[0132] As described in the first output state, the magnetic forces generated by the first magnetic force generating unit 27A and the second magnetic force generating unit 27B act on the first switching magnet 46 and the second switching magnet 56 via the closed outer edge 36C of the partition wall 36.

[0133] As described above, the first switching magnet 46 is mounted on the first output shaft 40 with its upper side facing S-pole. Therefore, in the second output state, when the first magnetic force generating part 27A generates magnetic force, the first output shaft 40 is attracted to the output shaft switching part 25 by magnetic force. As a result, the upper end surface of the first output shaft 40 moves along the axial direction of the first output shaft 40 by the magnetic force of the first magnetic force generating part 27A and fits tightly against the closed outer edge 36C of the partition wall 36.

[0134] On the other hand, the second switching magnet 56 is also mounted on the second output shaft 50 with its upper side facing S pole. Therefore, in the second output state, when the second magnetic force generating part 27B generates magnetic force, the second switching magnet 56 moves axially away from the output shaft switching part 25 due to the repulsive effect of the magnetic force.

[0135] In the second output state, when the drive motor 11 is driven, the rotational driving force generated by the drive motor 11 is also transmitted to the first output shaft 40 and the second output shaft 50 through the magnetic interaction between the input side magnet 21, the flux modulation unit 55 and the output shaft switching unit 25.

[0136] In the second output state, the first output shaft 40 is attracted to the output shaft switching section 25 by the magnetic force generated by the first magnetic force generating section 27A and comes into close contact with the partition wall 36. Therefore, the magnetic force generated by the first magnetic force generating section 27A and the frictional force generated between the partition wall 36 and the first output shaft 40 both play a role as resistance to the rotational driving force transmitted from the drive motor 11 to the first output shaft 40.

[0137] Furthermore, in the second output state, the relationship between the driving force transmitted to the first output shaft 40 and the resistance caused by the output shaft switching unit 25, etc., is set such that the resistance caused by the output shaft switching unit 25, etc., is greater than the driving force transmitted to the first output shaft 40. Therefore, although the first output shaft 40 in the second output state is in a state where the driving force generated by the drive motor 11 is transmitted, it is still in a state where rotation is hindered due to the resistance caused by the output shaft switching unit 25, etc.

[0138] On the other hand, in the second output state, the second output shaft 50 is moved away from the output shaft switching section 25 and away from the partition wall 36 by the magnetic force generated by the second magnetic force generating section 27B. Therefore, the resistance to the rotational driving force transmitted from the drive motor 11 to the second output shaft 50 is not affected by magnetic force or friction.

[0139] Therefore, in the second output state, the rotation caused by the driving force transmitted to the second output shaft 50 is not hindered by the resistance caused by the output shaft switching unit 25, etc. Therefore, in the second output state, the second output shaft 50 is in a state where the driving force generated by the drive motor 11 is transmitted and can output to the second valve core 59, which is the output end.

[0140] Furthermore, in Figure 6 In the second output state shown, when the drive motor 11 is driven, the rotational driving force generated by the drive motor 11 is transmitted to the first output shaft 40 and the second output shaft 50 through the magnetic interaction between the input-side magnet 21, the flux modulation unit 55, and the output shaft switching unit 25. At this time, the first output shaft 40 remains stationary due to the magnetic force of the output shaft switching unit 25, while the second output shaft 50 decelerates and rotates relative to the rotation of the drive motor 11 at a preset reduction ratio. In the first embodiment, based on the structure of the input-side magnet 21, the flux modulation unit 55, and the output-side magnet 45, the reduction ratio is 21.

[0141] Thus, according to the integrated valve V of this embodiment, by actuating the drive motor 11 in the second output state, the second output shaft 50 and the second valve core 59 can be moved. That is, by controlling the rotation direction of the drive motor 11 in the second output state, the second valve core 59 can be brought closer to or separated from the second valve seat 68, thereby adjusting the throttling opening of the second pressure reducing section VB.

[0142] like Figure 5 , Figure 6 As shown, the integrated valve V and power transmission device 1 according to this embodiment can switch to a first output state that outputs to the first output shaft 40 and a second output state that outputs to the second output shaft 50, thereby outputting driving force generated by a drive motor 11. Thus, the integrated valve V and power transmission device 1 can realize the operation of the two valve devices, the first pressure reducing unit VA and the second pressure reducing unit VB, through a drive motor 11 serving as the drive source.

[0143] As a result, the integrated valve V and power transmission device 1 according to the first embodiment can achieve, for example, the following: Figure 2 The valve device is a fluid circuit that requires multiple temperature states (e.g., refrigerant temperatures of the first evaporator 113 and the second evaporator 114), as shown in the refrigeration cycle 100. Furthermore, by implementing an integrated valve V that shares the drive source for multiple valve devices, the space occupied can be reduced compared to the case where each valve device is installed separately, thus enabling miniaturization of the fluid circuit's footprint.

[0144] According to the integrated valve V and power transmission device 1 of the first embodiment, rotational driving force is transmitted via a magnetic gear composed of an input-side magnet 21, a flux modulation unit 55, and an output-side magnet 45, regardless of whether it is in the first output state or the second output state. By using the magnetic gear, the rotational driving force generated by the drive motor 11 can be reduced in speed and transmitted to the output shaft side at a predetermined reduction ratio for each output state. As a result, the integrated valve V and power transmission device 1 can output to the first valve core 49 or the second valve core 59 while reducing the rotational driving force generated by the drive motor 11 at a predetermined reduction ratio and increasing the torque.

[0145] exist Figure 5 The first output state shown Figure 6 In the second output state shown, the rotational driving force generated by the drive motor 11 is transmitted to either the first output shaft 40 or the second output shaft 50. In other words, regardless of whether rotation is permitted or restricted in the first output shaft 40 or the second output shaft 50, the rotational driving force generated by the drive motor 11 acts on either output shaft.

[0146] In other words, even for the output shaft on the side where rotation is restricted, the driving force is still continuously transmitted, thereby suppressing the positional deviation of the output shaft when rotation is permitted, and improving the accuracy of the opening control of the first pressure reducing unit VA and the second pressure reducing unit VB.

[0147] Furthermore, in this state, the first output state and the second output state can be switched by changing the direction of the DC current flowing through the switching coil 26. Therefore, based on the integrated valve V and the power transmission device 1, the opening adjustment of the first pressure reducing unit VA and the opening adjustment of the second pressure reducing unit VB can be switched quickly, thereby improving the responsiveness of the fluid circuit operation switching.

[0148] like Figure 1 As shown, the input shaft 20 constituting the integrated valve V and the power transmission device 1 is disposed in the drive unit 10, and the first output shaft 40 and the second output shaft 50 are disposed in the mechanism receiving part 35 of the main body 30. The mechanism receiving part 35 of the main body 30 is separated from the drive unit 10 by a partition wall 36, and the mechanism receiving part 35 is spatially connected to the flow path forming part 60 constituting the main body 30.

[0149] That is, in the integrated valve V and power transmission device 1, the first output shaft 40 and the second output shaft 50 are arranged in the space through which the high-pressure refrigerant flowing in the refrigeration cycle 100 circulates, and are separated from the drive unit 10 side by the partition wall 36. Therefore, a refrigerant-sealed structure using the partition wall 36 can be realized, thereby suppressing the influence of the refrigerant on the operation of the drive unit 10. In addition, by adopting a structure in which the partition wall 36 is installed in the main body 30, the pressure resistance to high-pressure refrigerant can be improved.

[0150] As explained above, the power transmission device 1 according to the first embodiment includes an input shaft 20, a first output shaft 40, and a second output shaft 50, and switches between a first output state and a second output state via a switching operation of the output shaft switching unit 25. In the first output state, rotation of the second output shaft 50 based on the driving force is restricted, while rotation of the first output shaft 40 based on the driving force is permitted. In the second output state, rotation of the first output shaft 40 based on the driving force is restricted, while rotation of the second output shaft 50 based on the driving force is permitted.

[0151] Therefore, by integrating the valve V and the power transmission device 1, the output shaft switching unit 25 can switch between the first output state and the second output state, thereby appropriately switching the output end of the driving force generated by a single drive source to the first output shaft and the second output shaft. That is, the output of the first output shaft 40 and the second output shaft 50 can be realized by using only one drive source, thus enabling miniaturization of the structure (integrated valve V and refrigeration cycle 100) using the power transmission device 1.

[0152] Furthermore, in the first output state of the output shaft switching unit 25, the rotation of the second output shaft 50 based on the driving force is restricted, while the rotation of the first output shaft 40 based on the driving force is allowed. And in the second output state, the rotation of the first output shaft 40 based on the driving force is restricted, while the rotation of the second output shaft 50 based on the driving force is allowed.

[0153] That is, in either the first output state or the second output state, regardless of whether rotation occurs, the drive force is transmitted to the first output shaft 40 and the second output shaft 50. Therefore, according to the power transmission device 1, even when switching is performed by the output shaft switching unit 25, the positional deviation of the output end can be suppressed, thereby enabling high-precision control of the output mode of the first output shaft 40 and the second output shaft 50.

[0154] In addition, such as Figure 1 As shown, in the integrated valve V and power transmission device 1, the input shaft 20 has an input-side magnet 21, and the first output shaft 40 has an output-side magnet 45. Furthermore, the second output shaft 50 has a flux modulation section 55. The input shaft 20, the output-side magnet 45, and the flux modulation section 55 constitute a so-called magnetic gear. With this structure, the integrated valve V and power transmission device 1 can output the driving force input to the input shaft 20 at a predetermined reduction ratio when outputting from the first output shaft 40 and when outputting from the second output shaft 50, respectively.

[0155] Furthermore, according to the integrated valve V and the power transmission device 1, the first output shaft 40 and the second output shaft 50 are disposed in the mechanism receiving part 35 of the main body 30, and the mechanism receiving part 35 is separated from the drive part 10 on which the input shaft 20 is disposed by a partition wall 36.

[0156] Therefore, based on the power transmission device 1 and the integrated valve V, the environment on the first output shaft 40 and the second output shaft 50 side can be separated from the environment on the input shaft 20 side. For example, even when the drive unit 10 is arranged on the input shaft 20 side, the operation of the drive unit 10 and the input of driving force to the input shaft 20 can be realized without being affected by the environment on the first output shaft 40 and the second output shaft 50 side.

[0157] Furthermore, the output shaft switching unit 25 is disposed outside the mechanism housing 35, which is equivalent to the housing space, so that magnetic force acts on the first output shaft 40 and the second output shaft 50 disposed inside the mechanism housing 35, thereby restricting the rotation of either the first output shaft 40 or the second output shaft 50. That is, by means of magnetic force, the operation of the first output shaft 40 and the second output shaft 50 disposed inside the housing space can be controlled non-contactly, thereby allowing the switching between the first output state and the second output state without affecting the pressure environment inside the mechanism housing 35.

[0158] like Figure 5 , Figure 6 As shown, in the first embodiment, the first output state and the second output state are switched by applying magnetic force to the axial direction of each output shaft via the output shaft switching unit 25, the first switching magnet 46 of the first output shaft 40, and the second switching magnet 56 of the second output shaft 50. Furthermore, the first output shaft 40 and the second output shaft 50 are arranged radially inside and outside on the same rotation axis. Therefore, when switching between the first output state and the second output state via the output shaft switching unit 25, the load caused by the magnetic force can be applied in a manner that does not interfere with the operation of the first output shaft 40 and the second output shaft 50.

[0159] (Second Implementation)

[0160] Next, refer to Figure 7 , 8 The second embodiment, which differs from the embodiment described above, will be described below. In the second embodiment, the structures of the first output shaft 40, the second output shaft 50, and the output shaft switching unit 25 differ from those in the first embodiment. That is, the other structures in the integrated valve V and the power transmission device 1 (e.g., the drive unit 10, the main body 30, etc.) are the same as in the first embodiment. Therefore, in the following description, only the differences between the integrated valve V and the power transmission device 1 in the second embodiment and those in the first embodiment will be described in detail, and descriptions of other parts will be omitted.

[0161] In the integrated valve V and power transmission device 1 of the second embodiment, the first output shaft 40 is configured such that it has a rotating shaft on the extension line of the rotating shaft of the shaft 14 and the input shaft 20, and outputs a rotational driving force to the first valve core 49. The first output shaft 40 of the second embodiment has the same structure as that of the first embodiment, except that it does not have the first switching magnet 46. Therefore, the first output shaft 40 of the second embodiment, like that of the first embodiment, has a large-diameter portion 41 in which the output-side magnet 45 is disposed and a small-diameter portion 42 in which a groove portion 43 is formed.

[0162] Furthermore, the second output shaft 50 of the second embodiment is configured to have a rotating shaft on the extension line of the rotating shaft of the shaft 14 and the input shaft 20, and has a cylindrical portion 51 and a shaft portion 52. The cylindrical portion 51 is provided with a magnetic flux modulation portion 55, and the shaft portion 52 is formed with a through hole 52A.

[0163] like Figure 7 As shown, in the second output shaft 50 of the second embodiment, the second switching magnet 56 is not disposed on the upper end face of the cylindrical portion 51. Furthermore, in the cylindrical portion 51 of the second output shaft 50 of the second embodiment, the flux modulation portion 55 is formed to be longer in axial dimension than in the first embodiment. That is, the flux modulation portion 55 of the second embodiment is formed such that there is a region that does not overlap with the output-side magnet 45. Figure 7 The upper part of the flux modulation section 55 in the middle.

[0164] In the second embodiment, an output-side magnet 45 of the first output shaft 40 is disposed radially outward of the lower portion of the flux modulation unit 55. The lower portion of the flux modulation unit 55 is positioned opposite the input-side magnet 21 and the output-side magnet 45, separated by the pressure vessel 37. Therefore, according to the integrated valve V and power transmission device 1 of the second embodiment, the driving force transmitted to the input shaft 20 can be transmitted to the first output shaft 40 and the second output shaft 50 through the cooperative action of the lower portion of the flux modulation unit 55, the input-side magnet 21, and the output-side magnet 45.

[0165] like Figure 7 As shown, in the integrated valve V and power transmission device 1 of the second embodiment, unlike the first embodiment, a pressure vessel 37, formed as a bottomed cylindrical shape, is disposed to cover the upper surface of the flow path forming portion 60. The pressure vessel 37 works in conjunction with the upper portion of the flow path forming portion 60 to form the outer shell of the mechanism housing portion 35.

[0166] Like the partition wall 36 in the first embodiment, the pressure vessel 37 is made of, for example, a non-magnetic material or a material having a specified magnetic permeability. Specifically, the pressure vessel 37 is formed of stainless steel that has been work-hardened to transform austenitic stainless steel such as SUS304, aluminum, or SUS305 into martensite, thereby acquiring magnetism.

[0167] like Figure 7 As shown, in the second embodiment, the wall of the pressure vessel 37 is disposed radially outside the output-side magnet 45 of the first output shaft 40. Furthermore, the wall of the pressure vessel 37 is also disposed radially outside the upper portion of the flux modulation section 55 in the second output shaft 50.

[0168] In the integrated valve V and power transmission device 1 of the second embodiment, a first fixing coil 70A and a second fixing coil 70B are arranged as the output shaft switching part 25. The first fixing coil 70A and the second fixing coil 70B are composed of so-called claw-pole type fixing coils and are arranged in a ring on the radially outer side of the pressure vessel 37.

[0169] The first fixing coil 70A is configured to face the output side magnet 45 of the first output shaft 40 through the side wall portion of the pressure vessel 37, and generates a magnetic field that opposes the rotation of the first output shaft 40 when energized.

[0170] The second fixed coil 70B is configured to face the upper part of the flux modulation section 55 in the second output shaft 50 through the side wall of the pressure vessel 37, and generates a magnetic field that opposes the rotation of the second output shaft 50 when energized.

[0171] Here, refer to Figure 8 The structure of the first fixing coil 70A and the second fixing coil 70B is described in detail. Furthermore, in... Figure 8 Only a portion of the first fixing coil 70A is shown in the image; the second fixing coil 70B has the same structure.

[0172] The first fixed coil 70A has a coil body 71 and a toothed iron core 72. The coil body 71 of the first fixed coil 70A is a DC coil wound in a ring. The coil body 71 of the second fixed coil 70B is the same in structure as the coil body 70A, except that its diameter is smaller than that of the coil body of the first fixed coil 70A.

[0173] The toothed iron core 72 of the first fixed coil 70A is formed by sheet metal processing and is configured to wrap around the annular coil body 71 from the radially outer side toward the inner side. For example... Figure 8 As shown, multiple sets of upper teeth 72U and lower teeth 72L formed from the ends of toothed iron core 72 are arranged on the radial inner side of the first fixed coil 70A.

[0174] Multiple upper teeth 72U are formed by machining one end of the plate material constituting the toothed core 72 into a comb-like shape, and are arranged radially inward from the radially outer side of the coil body 71 via the upper side. On the other hand, multiple lower teeth 72L are formed by machining the other end of the plate material constituting the toothed core 72 into a comb-like shape, and are arranged radially inward from the radially outer side of the coil body 71 via the lower side.

[0175] like Figure 8 As shown, a predetermined interval is formed between the upper tooth 72U and the lower tooth 72L in the first fixing coil 70A, such that the upper tooth 72U and the lower tooth 72L are combined in a way that involves interlocking. The structure of the upper tooth 72U and the lower tooth 72L is the same in the second fixing coil 70B.

[0176] In the first fixed coil 70A configured in this way, by energizing the coil body 71, for example, the upper tooth 72U becomes the N pole and the lower tooth 72L becomes the S pole. Therefore, the N pole and S pole are arranged alternately circumferentially on the radially inner side of the first fixed coil 70A. The magnetic force generated in this way acts on the output side magnet 45 of the first output shaft 40 via the side wall portion of the pressure vessel 37. In other words, in the first fixed coil 70A, by energizing the coil body 71, a magnetic field that opposes the rotation of the first output shaft 40 is generated.

[0177] Similarly, in the second fixed coil 70B, by energizing the coil body 71, for example, the upper tooth 72U becomes the N pole and the lower tooth 72L becomes the S pole. Therefore, in the radially inner side of the second fixed coil 70B, the N pole and S pole are arranged alternately in the circumferential direction. The magnetic force generated in this way acts on the flux modulation section 55 of the second output shaft 50 via the side wall portion of the pressure vessel 37. In other words, in the second fixed coil 70B, by energizing the coil body 71, a magnetic field that opposes the rotation of the second output shaft 50 is generated.

[0178] Furthermore, the total number of upper teeth 72U and lower teeth 72L differs between the first fixing coil 70A and the second fixing coil 70B. The total number of upper teeth 72U and lower teeth 72L in the first fixing coil 70A is set such that the number of magnetic poles formed by the upper teeth 72U and lower teeth 72L is equal to the number of poles of the output magnet 45 in the first output shaft 40.

[0179] Therefore, between the upper tooth 72U and lower tooth 72L of the first fixing coil 70A and the output side magnet 45 of the first output shaft 40, for example, the attractive force generated by the S pole and the repulsive force generated by the N pole act in the direction of rotation. Furthermore, since the number of poles in the first fixing coil 70A and the output side magnet 45 satisfies the above-described relationship, the rotation of the first output shaft 40 can be impeded, thus stopping the rotation of the first output shaft 40.

[0180] On the other hand, the total number of upper teeth 72U and lower teeth 72L in the second fixed coil 70B is set to be equal to the total number of magnetic parts 55A in the flux modulation section 55 of the second output shaft 50.

[0181] Therefore, an attractive force acts in the rotational direction between the upper teeth 72U and lower teeth 72L of the second fixing coil 70B and the magnetic portion 55A in the flux modulation section 55 of the second output shaft 50. As described above, since the total number of the upper teeth 72U and lower teeth 72L in the second fixing coil 70B is the same as the number of the magnetic portions 55A in the second output shaft 50, the rotation of the second output shaft 50 can be resisted, thus stopping the rotation of the second output shaft 50.

[0182] Next, the first output state of the integrated valve V and power transmission device 1 configured as described above in the second embodiment will be explained. As mentioned above, the first output state is a state that restricts the rotation of the second output shaft 50 using the driving force transmitted from the drive motor 11, and allows the rotation of the first output shaft 40 based on the driving force.

[0183] Similarly to the above embodiment, in the integrated valve V and power transmission device 1, when the driving force is generated by the operation of the drive motor 11, the driving force is transmitted from the input shaft 20 to the first output shaft 40 and the second output shaft 50 through the coordinated action of the input side magnet 21, the output side magnet 45 and the flux modulation unit 55.

[0184] Here, in order to achieve the first output state, it is necessary to prevent the rotation of the second output shaft 50. In the second embodiment, the coil body 71 of the second fixing coil 70B constituting the output shaft switching section 25 is energized.

[0185] As a result, a magnetic field that opposes the rotation of the second output shaft 50 is generated between the upper tooth 72U and the lower tooth 72L of the second fixing coil 70B and each magnetic part 55A of the second output shaft 50. Therefore, by controlling the energization of the second fixing coil 70B, the driving force from the drive motor 11 can be overcome, and the rotation of the second output shaft 50 can be stopped.

[0186] At this time, the first fixing coil 70A is not energized, and no magnetic field is generated between the first fixing coil 70A and the output magnet 45. Therefore, the first output shaft 40 can rotate according to the driving force from the drive motor 11, thereby moving the first valve core 49.

[0187] That is, by energizing the coil body 71 of the second fixed coil 70B, the integrated valve V and the power transmission device 1 of the second embodiment can enable the first output state to be achieved while hindering the rotation of the second output shaft 50.

[0188] Furthermore, according to the integrated valve V and power transmission device 1 of the second embodiment, when the first output state is achieved, a magnetic field is generated to impede the rotation of the second output shaft 50, preventing other components from physically contacting the second output shaft 50. Therefore, the integrated valve V and power transmission device 1 of the second embodiment can improve the responsiveness when switching to the first output state.

[0189] Next, the second output state of the integrated valve V and power transmission device 1 in the second embodiment will be described. As described above, the second output state is a state that restricts the rotation of the first output shaft 40 using the driving force transmitted from the drive motor 11, and allows the rotation of the second output shaft 50 based on the driving force.

[0190] Here, in order to achieve the second output state, it is necessary to prevent the rotation of the first output shaft 40. In the second embodiment, the coil body 71 of the first fixing coil 70A constituting the output shaft switching section 25 is energized.

[0191] As a result, a magnetic field is generated between the upper tooth 72U and the lower tooth 72L of the first fixing coil 70A and the output side magnet 45 of the first output shaft 40, which opposes the rotation of the first output shaft 40. Therefore, by controlling the energization of the first fixing coil 70A, the driving force from the drive motor 11 can be overcome, and the rotation of the first output shaft 40 can be stopped.

[0192] At this time, the second fixing coil 70B is not energized, and no magnetic field is generated between the second fixing coil 70B and the magnetic part 55A of the flux modulation unit 55. Therefore, the second output shaft 50 can rotate according to the driving force from the drive motor 11, thereby moving the second valve core 59.

[0193] That is, by energizing the coil body 71 of the first fixing coil 70A, the integrated valve V and the power transmission device 1 of the second embodiment can achieve the second output state by allowing the second output shaft 50 to rotate while hindering the rotation of the first output shaft 40.

[0194] Furthermore, according to the integrated valve V and power transmission device 1 of the second embodiment, when the second output state is achieved, a magnetic field is generated to impede the rotation of the first output shaft 40, preventing other components from physically contacting the first output shaft 40. Therefore, the integrated valve V and power transmission device 1 of the second embodiment can improve the responsiveness when switching to the second output state.

[0195] As explained above, the power transmission device 1 according to the second embodiment can achieve the same effect as the above-described embodiment by generating a magnetic field that hinders rotation when switching between the first output state and the second output state.

[0196] Furthermore, according to the second embodiment, when switching between the first output state and the second output state, a magnetic field that hinders rotation is generated without causing other components to physically contact the output shaft. Therefore, the integrated valve V and power transmission device 1 of the second embodiment can exhibit high responsiveness in switching between the first output state and the second output state.

[0197] (Third implementation method)

[0198] Next, refer to Figure 9 The third embodiment, which differs from the embodiments described above, will be described below. In the third embodiment, the structure of the output shaft switching unit 25 differs from that of the embodiments described above. That is, the other structures of the integrated valve V and the power transmission device 1 in the third embodiment (drive unit 10, main body 30, first output shaft 40, second output shaft 50, flow path forming unit 60, etc.) are the same as those in the second embodiment described above. Therefore, in the following description, only the differences in the structure of the integrated valve V and the power transmission device 1 in the third embodiment from those in the embodiments described above will be described in detail, and the description of other parts will be omitted.

[0199] like Figure 9 As shown, in the integrated valve V and power transmission device 1 of the third embodiment, the output shaft switching unit 25 has a first electromagnet 75A and a second electromagnet 75B. The first electromagnet 75A has a DC coil and a magnetic yoke of magnetic type, and is configured to face the output side magnet 45 of the first output shaft 40 across the side of the pressure vessel 37.

[0200] The first electromagnet 75A is disposed in a portion of the circumferential direction, within the radially outer region of the output-side magnet 45, separated from the side of the pressure vessel 37. Therefore, when the DC coil is energized to generate a magnetic force in the first electromagnet 75A, the magnetic force generated by the first electromagnet 75A acts on a portion of the output-side magnet 45 disposed on the first output shaft 40 via the pressure vessel 37.

[0201] As a result, the first output shaft 40 is eccentricated from its normal state, where the first electromagnet 75A does not generate magnetic force, by the magnetic force generated between the first electromagnet 75A and a portion of the output-side magnet 45, in a direction closer to or away from the first electromagnet 75A. Consequently, due to this eccentricity, the first output shaft 40 can come into contact with the first bearing component 47 and generate friction, thereby hindering the rotation of the first output shaft 40 through friction.

[0202] Furthermore, the second electromagnet 75B, like the first electromagnet 75A, has a DC coil and a magnetic yoke with a magnetic system, and is configured to face the upper part of the flux modulation section 55 of the second output shaft 50 across the side of the pressure vessel 37.

[0203] The second electromagnet 75B is disposed in a portion of the circumferential direction, radially outward from the upper part of the magnetic flux modulation section 55, across the side of the pressure vessel 37. The circumferentially disposed range of the second electromagnet 75B can be set independently of the range where the first electromagnet 75A is disposed.

[0204] Therefore, when the DC coil is energized to generate a magnetic force in the second electromagnet 75B, the magnetic force generated by the second electromagnet 75B acts on a portion of the flux modulation section 55 disposed on the second output shaft 50 via the pressure vessel 37. More specifically, the magnetic force generated by the second electromagnet 75B acts on the upper portion of the magnetic part 55A in the flux modulation section 55.

[0205] As a result, the second output shaft 50, under the influence of the magnetic force generated between the second electromagnet 75B and a portion of the flux modulation unit 55, is eccentricated from its normal state where the second electromagnet 75B does not generate magnetic force, moving towards the direction of the second electromagnet 75B. Consequently, through this eccentricity, the second output shaft 50 can come into contact with the second bearing member 57 and generate friction, thereby hindering the rotation of the second output shaft 50 through friction.

[0206] That is, in the third embodiment, either the first electromagnet 75A or the second electromagnet 75B constituting the output shaft switching unit 25 can be used to apply a magnetic force to either the first output shaft 40 or the second output shaft 50 to make it eccentric. Since the first output shaft 40 and the second output shaft 50 are subjected to frictional force due to contact with other components as they are eccentric, the rotation of the eccentric output shaft in the first output shaft 40 and the second output shaft 50 will be hindered by the frictional force generated between them and other components.

[0207] In other words, according to the integrated valve V and power transmission device 1 of the third embodiment, by selecting an electromagnet that generates magnetic force in the radial direction from the first electromagnet 75A and the second electromagnet 75B constituting the output shaft switching section 25, the first output state and the second output state can be switched.

[0208] Next, the first output state of the integrated valve V and power transmission device 1 configured as described above in the third embodiment will be explained. As mentioned above, the first output state is a state that restricts the rotation of the second output shaft 50 using the driving force transmitted from the drive motor 11, and allows the rotation of the first output shaft 40 based on the driving force.

[0209] In the integrated valve V and power transmission device 1 of the third embodiment, when the driving force is generated by the operation of the drive motor 11, the driving force is transmitted from the input shaft 20 to the first output shaft 40 and the second output shaft 50 through the coordinated action of the input side magnet 21, the output side magnet 45 and the flux modulation unit 55.

[0210] Here, in order to achieve the first output state, it is necessary to prevent the rotation of the second output shaft 50. In the third embodiment, the DC coil of the second electromagnet 75B constituting the output shaft switching unit 25 is energized.

[0211] As a result, a magnetic force is generated between the second electromagnet 75B and the magnetic portion 55A of the flux modulation section 55 in the second output shaft 50, causing the second output shaft 50 to eccentricate towards the second electromagnet 75B. With this eccentricity, the second output shaft 50 comes into contact with other components (e.g., the second bearing component 57), thereby hindering its rotation. Therefore, by controlling the energization of the second electromagnet 75B, the driving force from the drive motor 11 can be overcome, stopping the rotation of the second output shaft 50.

[0212] At this time, the DC coil of the first electromagnet 75A is not energized, and no magnetic force is generated between the first electromagnet 75A and the output magnet 45. Therefore, the first output shaft 40 can rotate according to the driving force from the drive motor 11, thereby enabling the first valve core 49 to move.

[0213] That is, the integrated valve V and power transmission device 1 of the third embodiment apply magnetic force in the radial direction by energizing the DC coil of the second electromagnet 75B, thereby enabling the first output shaft 40 to rotate while hindering the rotation of the second output shaft 50, thereby achieving the first output state.

[0214] Furthermore, in the integrated valve V and power transmission device 1 according to the third embodiment, in order to generate a magnetic force in the radial direction and utilize friction on the second output shaft 50 when the first output state is achieved, the second electromagnet 75B is disposed in a portion of the circumferential direction. Therefore, the integrated valve V and power transmission device 1 according to the third embodiment can achieve switching to the first output state with a structure that is smaller than the structure in the above-described embodiment where the output shaft switching part 25 is disposed in the entire circumferential region.

[0215] Next, the second output state of the integrated valve V and power transmission device 1 in the third embodiment will be described. As described above, the second output state is a state that restricts the rotation of the first output shaft 40 using the driving force transmitted from the drive motor 11, and allows the rotation of the second output shaft 50 based on the driving force.

[0216] Here, in order to achieve the second output state, it is necessary to prevent the rotation of the first output shaft 40. In the third embodiment, the DC coil of the first electromagnet 75A constituting the output shaft switching section 25 is energized.

[0217] This generates a magnetic force between the first electromagnet 75A and a portion of the output-side magnet 45 in the first output shaft 40, causing the first output shaft 40 to eccentricate towards or away from the first electromagnet 75A. As the first output shaft 40 eccentricates, it comes into contact with other components (e.g., the first bearing component 47), thereby hindering its rotation. Therefore, by controlling the energization of the first electromagnet 75A, the driving force from the drive motor 11 can be overcome, stopping the rotation of the first output shaft 40.

[0218] At this time, the DC coil of the second electromagnet 75B is not energized, and no magnetic force is generated between the second electromagnet 75B and a portion of the magnetic part 55A in the flux modulation unit 55. Therefore, the second output shaft 50 can rotate according to the driving force from the drive motor 11, thereby moving the second valve core 59.

[0219] That is, the integrated valve V and power transmission device 1 of the third embodiment can apply magnetic force in the radial direction by energizing the DC coil of the first electromagnet 75A, thereby enabling the rotation of the second output shaft 50 while hindering the rotation of the first output shaft 40, thus realizing the second output state.

[0220] Furthermore, in the integrated valve V and power transmission device 1 according to the third embodiment, in order to generate a magnetic force in the radial direction and utilize friction on the first output shaft 40 when the second output state is achieved, the first electromagnet 75A is disposed in a portion of the circumferential direction. Therefore, the integrated valve V and power transmission device 1 according to the third embodiment can achieve switching to the second output state through a structure that is smaller than the structure in the above-described embodiment where the output shaft switching section 25 is disposed in the entire circumferential region.

[0221] As explained above, the power transmission device 1 according to the third embodiment can achieve the same effect as the above-described embodiment by applying magnetic force in the radial direction when switching between the first output state and the second output state.

[0222] Furthermore, in the third embodiment, when switching between the first output state and the second output state, a magnetic force is generated radially on the first output shaft 40 or the second output shaft 50 to cause it to become eccentric, and the frictional force generated between the eccentric output shaft and the shaft is utilized. Therefore, the first electromagnet 75A and the second electromagnet 75B constituting the output shaft switching unit 25 of the third embodiment are arranged in a portion of the circumferential direction.

[0223] As a result, the integrated valve V and power transmission device 1 according to the third embodiment can achieve switching to the first output state and the second output state by means of a structure that is smaller than the structure of the output shaft switching part 25 arranged in the entire circumferential region as in the above embodiment.

[0224] (Fourth Implementation)

[0225] Next, refer to Figures 10-15 This section describes a fourth embodiment that differs from the embodiments described above. In this fourth embodiment, the structure of the output shaft switching unit 25, which switches between the first and second output states, differs from the embodiments described above in that it includes a switching component 80. That is, the other structures in the integrated valve V and the power transmission device 1 (drive unit 10, main body 30, first output shaft 40, second output shaft 50, flow path forming unit 60, etc.) are the same as in the embodiments described above. Therefore, in the following description, only the differences in the structure of the integrated valve V and the power transmission device 1 in the fourth embodiment compared to the embodiments described above will be described in detail, and descriptions of other parts will be omitted.

[0226] The output shaft switching unit 25 in the integrated valve V and power transmission device 1 of the fourth embodiment consists of a switching coil 26 and a switching yoke 27 arranged along the outer side of the pressure vessel 37, and a switching component 80 arranged inside the mechanism housing 35.

[0227] like Figure 10As shown, in the fourth embodiment, the switching member 80 constituting the output shaft switching section 25 is disposed inside the mechanism housing section 35 and is configured to be movable along the axial direction of the first output shaft 40, etc. The switching member 80 is formed into a cylindrical shape having a first rotation limiting section 80A and a second rotation limiting section 80B.

[0228] like Figure 11 As shown, the inner diameter of the cylindrical switching component 80 is set to be smaller than the maximum outer diameter of the pressure vessel 37 and larger than the outer diameter of the large-diameter portion 41 of the first output shaft 40. Therefore, in the fourth embodiment, the switching component 80 can move axially along the output shaft, passing between the pressure vessel 37 and the first output shaft, inside the mechanism housing 35.

[0229] A first rotation limiting portion 80A is disposed at the lower part of the switching component 80. The first rotation limiting portion 80A is formed as an annular portion extending radially inward from the lower end of the cylindrical switching component 80. The first rotation limiting portion 80A is located below the large-diameter portion 41 in the first output shaft 40.

[0230] In the fourth embodiment, the upper surface of the first rotation limiting part 80A approaches and separates from the lower surface of the large-diameter part 41 in the first output shaft 40 as the switching member 80 moves up and down. That is, in the fourth embodiment, by controlling the energization of the switching coil 26, the upper surface of the first rotation limiting part 80A can be brought into contact with the lower surface of the large-diameter part 41 in the first output shaft 40.

[0231] Furthermore, a component-side magnet 81 is disposed on the side of the outer diameter of the first rotation restriction part 80A. The component-side magnet 81 is configured such that either the S pole or the N pole (e.g., the N pole) faces radially outward.

[0232] like Figure 10 As shown, in the fourth embodiment, the switching coil 26 and the switching yoke 27 are configured to face the component-side magnet 81 of the switching component 80 across the side wall of the pressure vessel 37. By controlling the direction of the current in the switching coil 26, the magnetic poles (S pole, N pole) generated by the switching yoke 27 can be switched.

[0233] By switching the type of magnetic poles in the switching yoke 27, a magnetic force is applied between the switching component 80 and the component-side magnet 81, thereby enabling the switching component 80 to move up and down inside the mechanism housing 35.

[0234] Furthermore, a second rotation limiting portion 80B is disposed on the upper part of the switching component 80. The second rotation limiting portion 80B is formed as an annular portion extending radially inward from the upper end of the cylindrical switching component 80. The second rotation limiting portion 80B is located above the upper surface of the large-diameter portion 41 of the first output shaft 40 and the upper surface of the cylindrical portion 51 of the second output shaft 50.

[0235] In the fourth embodiment, the lower surface of the second rotation limiting part 80B moves up and down with the switching member 80, separating from and approaching the upper surface of the cylindrical part 51 in the second output shaft 50. That is, in the fourth embodiment, by controlling the energization of the switching coil 26, the lower surface of the second rotation limiting part 80B can be brought into contact with the upper surface of the cylindrical part 51 in the second output shaft 50.

[0236] like Figure 10 As shown, resistance generating portions 85 are formed in the first rotation limiting portion 80A and the second rotation limiting portion 80B of the switching component 80. The resistance generating portion 85 of the first rotation limiting portion 80A is formed in the first rotation limiting portion 80A at the portion opposite to the lower surface of the large-diameter portion 41 in the first output shaft 40.

[0237] The resistance generating portion 85 of the second rotation limiting portion 80B is formed in the second rotation limiting portion 80B on the portion opposite to the upper surface of the cylindrical portion 51 in the second output shaft 50. The resistance generating portions 85 in the first rotation limiting portion 80A and the second rotation limiting portion 80B are formed in an annular shape centered on the center of the cylindrical switching member 80 and the position of the rotation axis of the first output shaft 40 and the second output shaft 50.

[0238] In the first rotation limiting part 80A and the second rotation limiting part 80B, the resistance generating part 85 is formed in an annular shape, and a plurality of protrusions 85A and a plurality of recesses 85B are alternately arranged along the circumference of the annulus. Figure 12 As shown, the protrusion 85A and the concave portion 85B in the resistance generating portion 85 are formed to extend radially from the center position of the annular resistance generating portion 85.

[0239] Here, the resistance generating portion 85 of the first rotation limiting portion 80A faces the lower surface of the large-diameter portion 41 in the first output shaft 40, and is configured to contact the lower surface of the large-diameter portion 41 as the switching member 80 moves up and down. The lower surface of the large-diameter portion 41 in the first output shaft 40 is an example of an opposing surface. Figure 10 As shown, a resistance generating portion 86 having multiple protrusions 86A and recesses 86B is formed on the lower surface of the large-diameter portion 41 in the first output shaft 40.

[0240] The resistance generating portion 86 on the first output shaft 40 side is formed in a circular shape, similar to the resistance generating portion 85 of the first rotation limiting portion 80A. In the resistance generating portion 86 on the first output shaft 40 side, a plurality of protrusions 86A and recesses 86B extend radially from the center of the circular ring, and the protrusions 86A and recesses 86B are alternately arranged in the circumferential direction.

[0241] Therefore, when the first rotation limiting part 80A contacts the lower surface of the large-diameter part 41 in the first output shaft 40, as... Figure 13 As shown, contact can occur when the protrusion 85A engages with the recess 86B and when the recess 85B engages with the protrusion 86A. Here, the switching member 80 can move axially on the output shaft, but is configured not to rotate about the axis of the output shaft. Therefore, by engaging the resistance generating part 85 of the first rotation limiting part 80A with the resistance generating part 86 on the first output shaft 40 side, resistance to the rotational driving force of the first output shaft 40 can be generated, thereby preventing the rotation of the first output shaft 40 and stopping it.

[0242] Furthermore, the resistance generating portion 85 of the second rotation limiting portion 80B faces the upper surface of the cylindrical portion 51 in the second output shaft 50, and is configured to contact the upper surface of the cylindrical portion 51 as the switching member 80 moves up and down. The upper surface of the cylindrical portion 51 in the second output shaft 50 is an example of an opposing surface. Figure 10 As shown, a resistance generating portion 87 having multiple protrusions 87A and recesses 87B is formed on the upper surface of the cylindrical portion 51 in the second output shaft 50.

[0243] The resistance generating portion 87 on the second output shaft 50 side is formed in a ring shape, similar to the resistance generating portion 85 on the second rotation limiting portion 80B. In the resistance generating portion 87 on the second output shaft 50 side, a plurality of protrusions 87A and recesses 87B extend radially from the center of the ring, and the protrusions 87A and recesses 87B are alternately arranged in the circumferential direction.

[0244] Therefore, when the second rotation limiting part 80B contacts the upper surface of the cylindrical part 51 in the second output shaft 50, as... Figure 13 As shown, contact can be achieved when the protrusion 85A is engaged with the recess 87B and the recess 85B is engaged with the protrusion 87A. As described above, the switching member 80 is configured not to rotate around the axis of the output shaft. Therefore, by engaging the resistance generating portion 85 of the second rotation limiting portion 80B with the resistance generating portion 87 on the second output shaft 50 side, resistance to the rotational driving force of the second output shaft 50 can be generated, thereby preventing the rotation of the second output shaft 50 and stopping it.

[0245] Next, the first output state of the integrated valve V and power transmission device 1 configured as described above in the fourth embodiment will be explained. As mentioned above, the first output state refers to a state that restricts the rotation of the second output shaft 50, which uses the driving force transmitted from the drive motor 11, and allows the rotation of the first output shaft 40 based on the driving force.

[0246] In the integrated valve V and power transmission device 1 of the fourth embodiment, when the driving force is generated by the operation of the drive motor 11, the driving force is transmitted from the input shaft 20 to the first output shaft 40 and the second output shaft 50 through the coordinated action of the input side magnet 21, the output side magnet 45 and the flux modulation unit 55.

[0247] Here, to achieve the first output state, it is necessary to prevent the rotation of the second output shaft 50. In the fourth embodiment, the switching member 80 is moved by the magnetic force generated by energizing the switching coil 26, thereby stopping the rotation of the second output shaft 50.

[0248] Specifically, by passing a direct current in a predetermined direction through the switching coil 26, a magnetic force with a polarity different from that of the component-side magnet 81 located on the outer surface of the switching component 80 is generated at the lower end of the switching yoke 27. As a result, a mutually attractive magnetic force exists between the lower end of the switching coil 26 and the component-side magnet 81 of the switching component 80.

[0249] The result is, as Figure 14 As shown, the switching component 80 moves downward along the axial direction under the action of magnetic force, causing the second rotation limiting part 80B to contact the upper surface of the cylindrical part 51 in the second output shaft 50. At this time, the resistance generating part 85 of the second rotation limiting part 80B engages with the resistance generating part 87 on the second output shaft 50 side, thereby generating resistance that hinders the rotation of the second output shaft 50 and stopping the rotation of the second output shaft 50.

[0250] Furthermore, during the phase when the second rotation limiting part 80B contacts the upper surface of the cylindrical part 51 in the second output shaft 50, the energization of the switching coil 26 can be stopped. When the energization of the switching coil 26 stops, the electromagnetic force from the switching yoke 27 stops, but the magnetic force in the component-side magnet 81 of the switching component 80 still acts as an attractive force on the lower end of the switching yoke 27. Therefore, even when the energization of the switching coil 26 is stopped, the second rotation limiting part 80B can still maintain the state in which the rotation of the second output shaft 50 is stopped.

[0251] Furthermore, by moving the switching member 80 downward along the axial direction, the first rotation limiting part 80A separates from the lower surface of the large-diameter part 41 in the first output shaft 40. As a result, the first output shaft 40 is no longer obstructed by the switching member 80 and becomes capable of rotating by the driving force transmitted from the input shaft 20.

[0252] That is, the integrated valve V and power transmission device 1 of the fourth embodiment move the switching component 80 by passing a DC current in a predetermined direction to the switching coil 26, thereby enabling the first output state to be achieved while hindering the rotation of the second output shaft 50.

[0253] Furthermore, according to the integrated valve V and power transmission device 1 of the fourth embodiment, when the first output state is achieved, the switching member 80 inside the mechanism housing 35 is moved by the switching coil 26 outside the mechanism housing 35 and the magnetic force from the switching yoke 27. Therefore, according to the fourth embodiment, the switching to the first output state can be achieved without disrupting the internal environment (i.e., the high-pressure environment) of the mechanism housing 35.

[0254] Furthermore, according to the integrated valve V and power transmission device 1 of the fourth embodiment, the switching member 80 moves axially along the first output shaft 40, etc., to apply an axial load to the second output shaft 50, thereby hindering the rotation of the second output shaft 50. Moreover, the first output shaft 40 and the second output shaft 50 are arranged on the same central axis, inside and outside respectively. Therefore, when an axial load is applied to the second output shaft 50, the influence on the rotational movement of the first output shaft 40 can be suppressed.

[0255] Furthermore, in the integrated valve V and power transmission device 1 of the fourth embodiment, a resistance generating part 85 is disposed in the second rotation limiting part 80B of the switching member 80, and a resistance generating part 87 is disposed on the upper surface of the cylindrical part 51 of the second output shaft 50. When the first output state is realized, the resistance generating part 85 on the switching member 80 side contacts the resistance generating part 87 on the second output shaft 50 side, generating resistance (friction) to hinder the rotation of the second output shaft 50.

[0256] The resistance generating section 85 and the resistance generating section 87 each have a plurality of recesses and protrusions extending radially from the center of rotation. Therefore, when the resistance generating section 85 and the resistance generating section 87 are brought into contact, the contact can occur with the protrusion 85A engaging with the recess 87B and the recess 85B engaging with the protrusion 87A, respectively. As a result, the resistance to the rotation of the second output shaft 50 can be increased, thereby enabling the integrated valve V and the power transmission device 1 of the fourth embodiment to reliably achieve the first output state.

[0257] Next, the second output state of the integrated valve V and power transmission device 1 in the fourth embodiment will be described. The second output state refers to a state that restricts the rotation of the first output shaft 40, which uses the driving force transmitted from the drive motor 11, and allows the rotation of the second output shaft 50 based on the driving force.

[0258] Here, to achieve the second output state, it is necessary to prevent the rotation of the first output shaft 40. In the fourth embodiment, the rotation of the first output shaft 40 is stopped by moving the switching member 80 through the magnetic force generated by energizing the switching coil 26.

[0259] Specifically, by supplying a direct current in a predetermined direction to the switching coil 26, a magnetic force with a polarity different from that of the component-side magnet 81 located on the outer surface of the switching component 80 is generated at the upper end of the switching yoke 27. That is, a direct current flows in the switching coil 26 in the opposite direction to that in the first output state. As a result, an attractive magnetic force exists between the upper end of the switching coil 26 and the component-side magnet 81 of the switching component 80.

[0260] The result is, as Figure 15 As shown, the switching component 80 moves upward along the axial direction under the action of magnetic force, causing the first rotation limiting part 80A to contact the lower surface of the large-diameter part 41 in the first output shaft 40. At this time, since the resistance generating part 85 of the first rotation limiting part 80A engages with the resistance generating part 86 on the first output shaft 40 side, a resistance that hinders the rotation of the first output shaft 40 can be generated, thereby stopping the rotation of the first output shaft 40.

[0261] Furthermore, during the phase when the first rotation limiting part 80A contacts the lower surface of the large-diameter portion 41 in the first output shaft 40, the energization of the switching coil 26 can be stopped. When the energization of the switching coil 26 stops, the electromagnetic force from the switching yoke 27 stops, but the magnetic force in the component-side magnet 81 of the switching component 80 still acts as an attractive force on the upper end of the switching yoke 27. Therefore, even when the energization of the switching coil 26 is stopped, the first rotation limiting part 80A can still maintain the state in which the rotation of the first output shaft 40 is stopped.

[0262] Furthermore, by moving the switching member 80 upward along the axial direction, the second rotation limiting part 80B separates from the upper surface of the cylindrical part 51 in the second output shaft 50. As a result, the second output shaft 50 is no longer obstructed by the switching member 80 and becomes capable of rotating by the driving force transmitted from the input shaft 20.

[0263] That is, according to the integrated valve V and power transmission device 1 of the fourth embodiment, by supplying a DC current in the opposite direction to that in the first output state to the switching coil 26, the switching component 80 is moved, thereby allowing the first output shaft 40 to rotate while hindering the rotation of the second output shaft 50. In other words, the integrated valve V and power transmission device 1 of the fourth embodiment can control the DC current to the switching coil 26 to achieve the second output state.

[0264] Furthermore, according to the integrated valve V and power transmission device 1 of the fourth embodiment, when the second output state is achieved, the switching member 80 inside the mechanism housing 35 is moved by the switching coil 26 outside the mechanism housing 35 and the magnetic force from the switching yoke 27. Therefore, according to the fourth embodiment, the switching to the second output state can be achieved without disrupting the internal environment (i.e., the high-pressure environment) of the mechanism housing 35.

[0265] Furthermore, according to the integrated valve V and power transmission device 1 of the fourth embodiment, the switching component 80 moves axially along the first output shaft 40, etc., applying an axial load to the first output shaft 40, thereby hindering the rotation of the first output shaft 40. Moreover, the first output shaft 40 and the second output shaft 50 are arranged on the same central axis, inside and outside respectively. Therefore, when an axial load is applied to the first output shaft 40, the influence on the rotational movement of the second output shaft 50 can be suppressed.

[0266] Furthermore, in the integrated valve V and power transmission device 1 of the fourth embodiment, a resistance generating part 85 is disposed in the first rotation limiting part 80A of the switching member 80, and a resistance generating part 86 is disposed on the lower surface of the large diameter part 41 of the first output shaft 40. When the second output state is realized, the resistance generating part 85 on the switching member 80 side contacts the resistance generating part 86 on the first output shaft 40 side, generating resistance (friction) to hinder the rotation of the first output shaft 40.

[0267] The resistance generating section 85 and the resistance generating section 86 each have a plurality of recesses and protrusions extending radially from the center of rotation. Therefore, when the resistance generating section 85 and the resistance generating section 86 are brought into contact, the contact can occur with the protrusion 85A engaging with the recess 86B and the recess 85B engaging with the protrusion 86A, respectively. As a result, the resistance to the rotation of the first output shaft 40 can be increased, thereby enabling the integrated valve V and the power transmission device 1 of the fourth embodiment to reliably achieve the second output state.

[0268] As explained above, the power transmission device 1 according to the fourth embodiment can achieve the same effect as the above-described embodiment in terms of structure and operation, even when the switching member 80 is moved by electromagnetic force to switch between the first output state and the second output state.

[0269] According to the integrated valve V and power transmission device 1 of the fourth embodiment, when switching between the first output state and the second output state, the switching component 80 inside the mechanism housing 35 is moved by the magnetic force from the switching coil 26 outside the mechanism housing 35 and the switching yoke 27. Therefore, according to the fourth embodiment, the switching component 80 can be moved without physical contact from the outside of the mechanism housing 35, thereby enabling the switching to the first output state and the second output state without disrupting the internal environment (i.e., the high-pressure environment) of the mechanism housing 35.

[0270] Furthermore, according to the fourth embodiment, the switching member 80 moves axially along the first output shaft 40, etc., to apply an axial load to either the first output shaft 40 or the second output shaft 50, thereby hindering the rotation of the loaded output shaft. Moreover, the first output shaft 40 and the second output shaft 50 are arranged on the same central axis, inside and outside respectively. Therefore, when an axial load is applied to either the first output shaft 40 or the second output shaft 50, the effect of rotational movement on the other output shaft can be suppressed.

[0271] Furthermore, in the integrated valve V and power transmission device 1 of the fourth embodiment, a resistance generating part 85 is disposed on the switching member 80 side, and a resistance generating part 86 and a resistance generating part 87 are disposed on the first output shaft 40 side and the second output shaft 50 side, respectively. When switching between the first output state and the second output state, the resistance generating part 85 on the switching member 80 side comes into contact with the resistance generating part 86 or the resistance generating part 87 on the output shaft side, thereby generating resistance (friction) to hinder the rotation of the output shaft.

[0272] The resistance generating portions 85, 86, and 87 each have multiple recesses and protrusions extending radially from the rotation center. Therefore, when the resistance generating portion 85 on the switching member 80 side contacts the resistance generating portions 86 and 87 on the output shaft side, contact can occur with the protrusion 85A engaging with the recess 86B (recess 87B) and the recess 85B engaging with the protrusion 86A (protrusion 87A). This increases the resistance to the rotation of the first output shaft 40 and the second output shaft 50, thereby enabling the integrated valve V and power transmission device 1 of the fourth embodiment to reliably switch between the first output state and the second output state.

[0273] This disclosure is not limited to the above-described embodiments. Various modifications can be made without departing from the spirit of this disclosure.

[0274] In the above-described embodiment, the driving force is transmitted to the first output shaft 40 or the second output shaft 50 non-contactly via the magnetic force of the interaction between the input-side magnet 21, the output-side magnet 45, and the flux modulation unit 55, but the structure is not limited to this. For example, a structure may also be used to transmit the driving force from the input shaft 20 to the first output shaft 40 or the second output shaft 50 after being reduced to a predetermined reduction ratio by a mechanical structure such as a planetary gear mechanism.

[0275] Furthermore, in the above-described embodiments, such as Figure 5 , Figure 6 As shown, the magnetic force generated by the output shaft switching unit 25 acts directly on each of the first output shaft 40 and the second output shaft 50, achieving a state where rotation of one is restricted while rotation of the other is allowed. However, the switching operation of the output shaft switching unit 25 on the first output shaft 40 and the second output shaft 50 is not limited to this method. For example, a braking member that is displaced by the magnetic force generated by the output shaft switching unit 25 can also be used, and the structure that restricts rotation of one while allowing rotation of the other can be achieved by utilizing the displacement of the braking member.

[0276] In the above implementation methods, such as Figure 1 As shown, the first magnetic force generating part 27A and the second magnetic force generating part 27B of the output shaft switching part 25 are disposed on the upper surface of the closed outer edge part 36C in the partition wall 36, but are not limited to this arrangement.

[0277] The configuration of the first magnetic force generating unit 27A is sufficient as long as it can apply magnetic force to the first switching magnet 46 of the first output shaft 40, thereby restricting the rotation of the first output shaft 40, and various methods can be adopted. Similarly, the configuration of the second magnetic force generating unit 27B is sufficient as long as it can apply magnetic force to the second switching magnet 56 of the second output shaft 50, thereby restricting the rotation of the second output shaft 50, and various methods can also be adopted.

[0278] In the fourth embodiment described above, a resistance generating part 85 formed in the switching member 80 is listed as a part that contacts the resistance generating parts 86 and 87 formed on the first output shaft 40 and the second output shaft 50, respectively, but the embodiment is not limited to this. The resistance generating part 85 can be arranged inside the mechanism housing 35 such that it contacts either the first output shaft 40 or the second output shaft 50 and can rotate.

[0279] For example, resistance generating portions 86, 87, and corresponding resistance generating portions 85 can also be applied to the structure of the first output shaft 40 and the second output shaft 50. Specifically, resistance generating portions 86 can be formed on the upper surface of the first output shaft 40 in the first embodiment, and resistance generating portions 87 can be formed on the upper surface of the second output shaft 50. Furthermore, resistance generating portions 85 are formed on the inner surface of the mechanism receiving portion 35 in the closed outer edge portion 36C that constitutes the partition wall 36, respectively, opposite to them. With such a structure, even in the structure of the first embodiment, resistance can be applied to either the first output shaft 40 or the second output shaft 50, thereby reliably realizing the switching between the first output state and the second output state.

[0280] In the fourth embodiment described above, the shapes of the resistance generating portion 86 and resistance generating portion 87 formed on the first output shaft 40 and the second output shaft 50 side, and the resistance generating portion 85 formed on the switching member 80 are listed as follows: Figure 13 The structure shown is not limited to this method. For example, as Figure 16 As shown, the bottom surfaces of recesses 86B and 87B can be formed to be recessed towards the center of their width direction, and the tip of the protrusion 85A in the resistance generating section 85 of the switching member 80 can be guided to the center of its width direction. This allows the resistance generating section 85 on the switching member 80 side to engage more deeply with the resistance generating section 86 or 87, thereby reliably applying resistance that hinders the rotation of the first output shaft 40 and the second output shaft 50.

[0281] As long as the resistance generating portions 86 and 87 formed on the first output shaft 40 and the second output shaft 50 sides can engage with the resistance generating portion 85 formed on the switching member 80, the contact portions between them can be appropriately modified. As described above, a structure in which the bottom surfaces of the recesses 86B and 87B contact the top surface of the protrusion 85A of the resistance generating portion 85 can also be adopted. Furthermore, as Figure 17 As shown, a structure can also be adopted in which the inner side surfaces of the recesses 86B and 87B contact and engage with the side surface of the protrusion 85A, and the top end of the protrusion 85A in the resistance generating part 85 separates from the bottom surface of the recesses 86B and 87B.

[0282] The features of the power transmission device disclosed in this specification are as follows.

[0283] (Project 1)

[0284] A power transmission device, comprising:

[0285] Input shaft (20), which rotates by the input of driving force;

[0286] A first output shaft (40) rotates by a driving force transmitted from the input shaft;

[0287] A second output shaft (50), configured at a different position from the first output shaft, and rotated by a driving force transmitted from the input shaft; and

[0288] The output shaft switching unit (25) switches to a first output state and a second output state. The first output state restricts the rotation of the second output shaft based on the driving force and allows the rotation of the first output shaft based on the driving force. The second output state restricts the rotation of the first output shaft based on the driving force and allows the rotation of the second output shaft based on the driving force.

[0289] (Project 2)

[0290] In the power transmission device described in Project 1

[0291] The input shaft includes an input-side magnet (21) having a preset number of poles.

[0292] The input-side magnet rotates integrally with the input shaft as the input shaft rotates based on the driving force input.

[0293] The first output shaft has an output-side magnet (45) which is arranged opposite to the input-side magnet and has a different number of poles than the input-side magnet.

[0294] The output-side magnet rotates integrally with the first output shaft as the first output shaft rotates.

[0295] The second output shaft has a flux modulation section (55), which is configured by arranging a plurality of magnetic sections (55A) side by side between the input-side magnet and the output-side magnet, and modulating the magnetic flux between the input-side magnet and the output-side magnet.

[0296] The flux modulation unit rotates integrally with the second output shaft as the second output shaft rotates.

[0297] (Project 3)

[0298] In the power transmission device described in Project 1 or 2

[0299] The first output shaft and the second output shaft are respectively disposed inside a receiving space (35) that is divided relative to the space where the input shaft is disposed.

[0300] (Project 4)

[0301] In the power transmission device described in Project 3

[0302] The output shaft switching unit is located outside the receiving space.

[0303] By applying a magnetic force to the interior of the containment space, the rotation of either the first output shaft or the second output shaft is restricted, thereby switching between the first output state and the second output state.

[0304] (Project 5)

[0305] In the power transmission device described in Project 4

[0306] The output shaft switching unit generates a load in the radial direction of the first output shaft and the second output shaft by applying a magnetic force to the interior of the housing space, thereby switching the first output state and the second output state.

[0307] (Project 6)

[0308] In the power transmission device described in Project 4

[0309] The output shaft switching unit switches between the first output state and the second output state by forming a magnetic field that hinders rotation on either the first output shaft or the second output shaft.

[0310] (Project 7)

[0311] In the power transmission device described in Project 4

[0312] The output shaft switching unit generates a load on the first output shaft and the second output shaft in the axial direction by applying a magnetic force to the interior of the receiving space, thereby switching the first output state and the second output state.

[0313] (Project 8)

[0314] In the power transmission device described in Project 7

[0315] It has a resistance generating part (85) disposed inside the receiving space, which generates resistance through contact.

[0316] The output shaft switching unit applies a magnetic force to the interior of the receiving space, thereby changing the relative position of either the first output shaft or the second output shaft with respect to the resistance generating unit along the axial direction of the first output shaft and the second output shaft.

[0317] The first output state and the second output state are switched by the resistance generated between either the first output shaft or the second output shaft and the resistance generating part.

[0318] (Project 9)

[0319] In the power transmission device described in Project 8

[0320] The resistance generating unit is configured inside the receiving space to be displaceable along the axial direction of the first output shaft and the second output shaft.

[0321] The resistance generating part is displaced axially by the magnetic force from the output shaft switching part, and comes into contact with either the first output shaft or the second output shaft.

[0322] (Project 10)

[0323] In the power transmission device described in Project 8

[0324] The first output shaft and the second output shaft are configured inside the receiving space to be displaceable along the axial direction of the first output shaft and the second output shaft.

[0325] The resistance generating part is positioned such that, when it is displaced axially by the magnetic force from the output shaft switching part, it contacts either the first output shaft or the second output shaft.

[0326] (Project 11)

[0327] In any one of items 8 to 10, the power transmission device

[0328] When the surfaces of the first output shaft and the second output shaft, and the surfaces opposite to the resistance generating part in the axial direction of the first output shaft and the second output shaft, are taken as opposing surfaces,

[0329] A protrusion (85A, 86A, 87A) is formed on either the resistance generating portion or the opposing surface, and the protrusion protrudes along the axial direction of the first output shaft and the second output shaft.

[0330] A recess (85B, 86B, 87B) is formed on the other side of the resistance generating part and the opposing surface. The recess is recessed along the axial direction of the first output shaft and the second output shaft and engages with the protrusion.

[0331] While this disclosure has been described with reference to embodiments, it should be understood that this disclosure is not limited to these embodiments or structures. This disclosure includes various modifications and equivalent variations. In addition, various combinations and methods, as well as other combinations and methods containing only one element, more than one element, or less than one element, should be considered to fall within the scope and spirit of this disclosure.

Claims

1. A power transmission device, characterized in that, have: Input shaft (20), which rotates by the input of driving force; A first output shaft (40) rotates by a driving force transmitted from the input shaft; A second output shaft (50) is configured at a different position from the first output shaft and is rotated by a driving force transmitted from the input shaft; as well as The output shaft switching unit (25) switches to a first output state and a second output state. The first output state restricts the rotation of the second output shaft based on the driving force and allows the rotation of the first output shaft based on the driving force. The second output state restricts the rotation of the first output shaft based on the driving force and allows the rotation of the second output shaft based on the driving force.

2. The power transmission device according to claim 1, characterized in that, The input shaft includes an input-side magnet (21) having a preset number of poles. The input-side magnet rotates integrally with the input shaft as the input shaft rotates based on the driving force input. The first output shaft has an output-side magnet (45) which is arranged opposite to the input-side magnet and has a different number of poles than the input-side magnet. The output-side magnet rotates integrally with the first output shaft as the first output shaft rotates. The second output shaft has a flux modulation section (55), which is configured by arranging a plurality of magnetic sections (55A) side by side between the input-side magnet and the output-side magnet, and modulating the magnetic flux between the input-side magnet and the output-side magnet. The flux modulation unit rotates integrally with the second output shaft as the second output shaft rotates.

3. The power transmission device according to claim 1 or 2, characterized in that, The first output shaft and the second output shaft are respectively disposed inside a receiving space (35) that is divided relative to the space where the input shaft is disposed.

4. The power transmission device according to claim 3, characterized in that, The output shaft switching unit is located outside the receiving space. By applying a magnetic force to the interior of the containment space, the rotation of either the first output shaft or the second output shaft is restricted, thereby switching between the first output state and the second output state.

5. The power transmission device according to claim 4, characterized in that, The output shaft switching unit generates a load in the radial direction of the first output shaft and the second output shaft by applying a magnetic force to the interior of the housing space, thereby switching the first output state and the second output state.

6. The power transmission device according to claim 4, characterized in that, The output shaft switching unit switches between the first output state and the second output state by forming a magnetic field that hinders rotation on either the first output shaft or the second output shaft.

7. The power transmission device according to claim 4, characterized in that, The output shaft switching unit generates a load on the first output shaft and the second output shaft in the axial direction by applying a magnetic force to the interior of the receiving space, thereby switching the first output state and the second output state.

8. The power transmission device according to claim 7, characterized in that, It has a resistance generating part (85) disposed inside the receiving space, which generates resistance through contact. The output shaft switching unit applies a magnetic force to the interior of the receiving space, thereby changing the relative position of either the first output shaft or the second output shaft with respect to the resistance generating unit along the axial direction of the first output shaft and the second output shaft. The first output state and the second output state are switched by the resistance generated between either the first output shaft or the second output shaft and the resistance generating part.

9. The power transmission device according to claim 8, characterized in that, The resistance generating unit is configured inside the receiving space to be displaceable along the axial direction of the first output shaft and the second output shaft. The resistance generating part is displaced axially by the magnetic force from the output shaft switching part, and comes into contact with either the first output shaft or the second output shaft.

10. The power transmission device according to claim 8, characterized in that, The first output shaft and the second output shaft are configured inside the receiving space to be displaceable along the axial direction of the first output shaft and the second output shaft. The resistance generating part is positioned such that, when it is displaced axially by the magnetic force from the output shaft switching part, it contacts either the first output shaft or the second output shaft.

11. The power transmission device according to claim 8, characterized in that, When the surfaces of the first output shaft and the second output shaft, and the surfaces opposite to the resistance generating part in the axial direction of the first output shaft and the second output shaft, are taken as opposing surfaces, A protrusion (85A, 86A, 87A) is formed on either the resistance generating portion or the opposing surface, and the protrusion protrudes along the axial direction of the first output shaft and the second output shaft. A recess (85B, 86B, 87B) is formed on the other side of the resistance generating part and the opposing surface. The recess is recessed along the axial direction of the first output shaft and the second output shaft and engages with the protrusion.

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