Pump Systems and Electronics

Abstract

To provide a pump system capable of utilizing vibration generated in a pump in another purpose, and to provide electronic equipment applying the pump system.SOLUTION: A pump system 2 includes a vibration actuator 8 which vibrates by electromagnetic drive, and includes a pair of pumps 3A, 3B in which a fluid is discharged by the drive of the vibration actuator 8. Also, the pump system 2 includes: a vibration suppression mode M1 in which the pair of pumps 3A, 3B is driven so that the vibration of each other's vibration actuator 8 is off-set; and a vibration generation mode M2 in which the pair of pumps 3A, 3B is driven so that the vibration of each other's vibration actuator 8 is superposed.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a pump system and an electronic device. [Background technology]

[0002] For example, Patent Document 1 describes a structure for reducing vibrations in an electric pump motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-165410 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, if the vibration of the electric pump motor is reduced, the vibration of the motor cannot be used for other purposes. For example, in the case of a device that requires a vibration generating device such as a vibrator to be installed together with the electric pump, the vibration generating device must be installed separately from the electric pump motor, which may lead to an increase in size, complexity, and cost of the device.

[0005] The present invention has been made in consideration of the above points, and has an object to provide a pump system that can utilize vibrations generated by the pump for other purposes, and an electronic device to which the pump system is applied. [Means for solving the problem]

[0006] Such objectives are as follows: 5 This is achieved by the present invention.

[0007] (1) A vibration actuator that is electromagnetically driven to vibrate, and a pair of pumps that discharge a fluid by driving the vibration actuator, a vibration suppression mode in which the pair of pumps are driven so that vibrations of the vibration actuators are offset; a vibration generating mode in which the pair of pumps are driven so that the vibrations of the vibration actuators are superimposed on each other; death, switching between the vibration suppression mode and the vibration generation mode by changing a phase difference between the vibration of one of the vibration actuators and the vibration of the other of the vibration actuators; The pair of pumps are arranged so that the vibration directions of the vibration actuators are aligned, In the vibration generating mode, the pair of pumps are driven in phase with each other, The vibration generation mode has a plurality of modes with different phase differences. A pump system comprising:

[0010] ( 2 In the vibration suppression mode, the pair of pumps are driven in opposite phases. 1 ) The pump system described in.

[0013] ( 3 ) (1) or (2) above An electronic device comprising the pump system according to claim 1.

[0014] ( 4 The above-mentioned ( 3 ) The electronic device described in.

[0015] ( 5 a pump drive mode in which the fluid is supplied from the pump system to the supplied part; and a vibration drive mode in which the pump system is vibrated without supplying the fluid from the pump system to the supply portion. 4 ) The electronic device described in. Effect of the Invention

[0016] In the pump system and electronic device of the present invention, vibrations can be generated by driving a pair of pumps so that the vibrations of the vibration actuators of each pump are superimposed. Therefore, the vibration generated by the pump system can be used for another purpose. Furthermore, since the pump system has a vibration suppression mode in which vibrations are not generated and a vibration generation mode in which vibrations are generated, and it is possible to switch between the vibration suppression mode and the vibration generation mode, it is possible to turn the vibration on and off while driving the pump system. Therefore, vibrations can be generated as needed. [Brief description of the drawings]

[0017] [Figure 1] FIG. 1 is a plan view of a smart watch according to a preferred embodiment. [Diagram 2] FIG. 1 is a diagram showing an overall configuration of a pump system applied to a smart watch. [Diagram 3] FIG. [Figure 4] FIG. 4 is a cross-sectional view showing the driving principle of the pump shown in FIG. [Diagram 5] FIG. 4 is a cross-sectional view showing the driving principle of the pump shown in FIG. [Figure 6] FIG. 13 is a diagram showing an AC voltage applied to the pump in a vibration suppression mode. [Figure 7] 11A and 11B are diagrams illustrating the drive states of the pumps in a vibration suppression mode. [Figure 8] FIG. 4 is a diagram showing an AC voltage applied to a pump in a first vibration generation mode. [Figure 9] 6A to 6C are diagrams illustrating the driving states of the pumps in a first vibration generating mode. [Figure 10] FIG. 11 is a diagram showing an AC voltage applied to the pump in a second vibration generation mode. [Figure 11] 11A and 11B are diagrams illustrating the driving states of the pumps in a second vibration generating mode. [Figure 12] FIG. 13 is a diagram showing a state of a pump drive mode. [Figure 13] FIG. 13 is a diagram showing a state of a vibration drive mode. [Figure 14] FIG. 13 is a diagram showing a modified example of the pump system. [Figure 15] FIG. 13 is a diagram showing a modified example of the pump system. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0018] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a pump system and an electronic device according to the present invention will be described in detail based on preferred embodiments shown in the accompanying drawings.

[0019] FIG. 1 is a plan view showing a smart watch according to a preferred embodiment. FIG. 2 is a diagram showing the overall configuration of a pump system applied to a smart watch. FIG. 3 is a cross-sectional view of a pump. FIGS. 4 and 5 are cross-sectional views showing the driving principle of the pump shown in FIG. 3. FIG. 6 is a diagram showing an AC voltage applied to the pump in the vibration suppression mode. FIG. 7 is a diagram showing the driving state of each pump in the vibration suppression mode. FIG. 8 is a diagram showing an AC voltage applied to the pump in the first vibration generation mode. FIG. 9 is a diagram showing the driving state of each pump in the first vibration generation mode. FIG. 10 is a diagram showing an AC voltage applied to the pump in the second vibration generation mode. FIG. 11 is a diagram showing the driving state of each pump in the second vibration generation mode. FIG. 12 is a diagram showing the state of the pump drive mode. FIG. 13 is a diagram showing the state of the vibration drive mode. FIGS. 14 and 15 are diagrams showing modified examples of the pump system, respectively.

[0020] For ease of explanation, in the following, an X-axis, a Y-axis, and a Z-axis that are perpendicular to each other are illustrated in each figure except for Figures 1, 6, 8, and 10. The direction along the X-axis is also referred to as the X-axis direction, the direction along the Y-axis is also referred to as the Y-axis direction, and the direction along the Z-axis is also referred to as the Z-axis direction. The positive side of the Y-axis direction (the side indicated by the arrow) is also referred to as "up," and the negative side (the side opposite the arrow) is also referred to as "down."

[0021] The electronic device shown in Fig. 1 is a wearable terminal, and more specifically, a smart watch 1. The smart watch 1 has a watch body 11 equipped with a pump system 2, and a belt 12 for wearing the watch body 11 on the wrist.

[0022] A touch panel display 13 is provided on the surface of the watch body 11, and various information is displayed on this display 13. The watch body 11 also has communication functions such as Wi-Fi and Bluetooth, and can be linked to a smartphone or the like. Various applications can be installed on the watch body 11, and for example, it is possible to check the time, send and receive e-mail, make voice calls, make image calls, play music, make electronic payments, measure blood pressure, count steps, play games, etc. These applications are selected, executed, etc., by touch input on the display 13.

[0023] The belt 12 has a parent belt 14 extending from one end (12 o'clock side) of the watch body 11, and a tip belt 15 extending from the other end (6 o'clock side). The tip of the parent belt 14 is provided with a buckle 16 having a pin 161. Meanwhile, the tip belt 15 has a plurality of small holes 17 for inserting the pin 161 formed along the extension direction of the tip belt 15. The smartwatch 1 can be worn on the user's wrist by passing the tip belt 15 through the buckle 16 and then inserting the pin 161 into the small hole 17 that fits the thickness of the wrist.

[0024] In addition, the parent side belt 14 and the tip side belt 15 are each provided with a bag body 18 (supplied part) to which a fluid is supplied from the pump system 2. The fluid is not particularly limited and may be a liquid or a gas, but is preferably a gas. For convenience of explanation, the following description will be given assuming that the fluid is air.

[0025] In this embodiment, the pouch 18 is embedded inside the parent side belt 14 and the tip side belt 15. However, this is not limited thereto, and for example, the pouch 18 may be provided on the back or front of the parent side belt 14 and the tip side belt 15. As described above, when the smart watch 1 is worn on the wrist using the buckle 16, air is supplied from the pump system 2 to each pouch 18, and each pouch 18 is inflated, so that the belt 12 can be tightly attached to the wrist. Therefore, the fit (wearing comfort) of the smart watch 1 on the wrist is improved.

[0026] Although the smartwatch 1 has been briefly described above, the configuration of the smartwatch 1 is not particularly limited. For example, the pump system 2 may be mounted on the belt 12. Furthermore, the watch body 11 may be provided with at least one physical button in addition to the display 13.

[0027] Furthermore, the belt 12 is not particularly limited as long as it can be worn on the wrist, and for example, the master belt 14 and the tip belt 15 may be connected using a magnet or a hook-and-loop fastener instead of the buckle 16. Also, the master belt 14 and the tip belt 15 may be integrally formed, that is, the belt 12 may be in the shape of a loop connecting the 12 o'clock side and the 6 o'clock side of the watch body 11, and the belt 12 may be worn on the user's wrist simply by expanding the bag body 18.

[0028] Also, the watch may have a base to which the belt 12 is connected, and the watch body 11 may be detachable from the base. In this case, the pump system 2 may be mounted on the watch body 11 or on the base.

[0029] Next, we will explain the pump system 2 installed in the smartwatch 1. As described above, the pump system 2 has the function of supplying air to the bag 18 and inflating the bag 18.

[0030] 2, the pump system 2 includes a pair of pumps 3A, 3B, a pipeline 4 connecting the pumps 3A, 3B to the bag body 18, and a control device 5 that controls the operation of the pumps 3A, 3B. Each of these components will be described in detail below.

[0031] <Pumps 3A and 3B> As shown in FIG. 3, the pumps 3A and 3B have the same configuration, and include a housing 7, a vibration actuator 8, and a pump section 9.

[0032] The vibration actuator 8 has a shaft portion 81, a movable body 82 supported movably relative to the housing 7 via the shaft portion 81, and a pair of coil core portions 85, 86 fixed to the housing 7. The movable body 82 is elongated and extends in the X-axis direction, and is connected to the housing 7 at its center via the shaft portion 81. Therefore, the movable body 82 rotates back and forth around the Z-axis like a seesaw, centered on the shaft portion 81, relative to the housing 7.

[0033] Magnets 83, 84 are provided at both ends of the movable body 82. These magnets 83, 84 are arranged symmetrically with respect to the shaft portion 81. The magnets 83, 84 have arc-shaped magnetic pole faces 831, 841 that face the coil core portions 85, 86. The magnetic pole faces 831, 841 have south poles and north poles arranged alternately along the arc direction. These magnets 83, 84 are permanent magnets.

[0034] The movable body 82 is provided with pressers 87 and 88 that press the pump section 9 when the movable body 82 rotates back and forth around the Z axis. These pressers 87 and 88 are arranged symmetrically with respect to the shaft section 81. The presser 87 is arranged between the shaft section 81 and the magnet 83, and protrudes on both sides in the width direction of the movable body 82 (both sides in the Y axis direction). The presser 88 is arranged between the shaft section 81 and the magnet 84, and protrudes on both sides in the width direction of the movable body 82 (both sides in the Y axis direction).

[0035] Coil core portions 85 and 86 are disposed on both sides of movable body 82 in the X-axis direction, with coil core portion 85 facing pole surface 831 of magnet 83 and coil core portion 86 facing pole surface 841 of magnet 84. These coil core portions 85 and 86 are disposed symmetrically with respect to shaft portion 81.

[0036] The coil core portion 85 has a core portion 851 and a coil 859 wound around the core portion 851. The core portion 851 also has a core portion 852 around which the coil 859 is wound, and a pair of core poles 853, 854 extending from both ends of the core portion 852. The core poles 853, 854 also have pole faces 853a, 854a that face the pole face 831 of the magnet 83. The pole faces 853a, 854a are each curved in an arc shape following the pole face 831 of the magnet 83. The coil 859 is supplied with power from the control device 5 to excite the core poles 853, 854 with different polarities.

[0037] The coil core portion 86 has a core portion 861 and a coil 869 wound around the core portion 861. The core portion 861 also has a core portion 862 around which the coil 869 is wound, and a pair of core poles 863, 864 extending from both ends of the core portion 862. The core poles 863, 864 also have pole faces 863a, 864a that face the pole face 841 of the magnet 84. The pole faces 863a, 864a are each curved in an arc shape following the pole face 841 of the magnet 84. The coil 869 is supplied with power from the control device 5 to excite the core poles 863, 864 with different polarities.

[0038] The four pump sections 9 are arranged vertically and horizontally with respect to the shaft section 81. Specifically, two pump sections 9 are arranged facing each other vertically (in the Y-axis direction) via one pressing element 87, and the remaining two pump sections 9 are arranged facing each other vertically (in the Y-axis direction) via the other pressing element 88. These four pump sections 9 have the same configuration, and each has a sealed chamber 91 and a movable wall 92.

[0039] The sealed chamber 91 is connected to an intake port 98 that draws in air from the outside and an exhaust port 99 that exhausts air inside the sealed chamber 91. In this embodiment, two sealed chambers 91 located above the movable body 82 share one exhaust port 99, and two sealed chambers 91 located below the movable body 82 share one exhaust port 99.

[0040] The movable wall 92 constitutes a part of the sealed chamber 91. The movable wall 92 is displaced by being pressed by the pressing members 87 and 88, and changes the volume of the sealed chamber 91. When the volume of the sealed chamber 91 decreases due to the displacement of the movable wall 92, the pressure in the sealed chamber 91 increases, and the air in the sealed chamber 91 is discharged from the discharge port 99. On the other hand, when the volume of the sealed chamber 91 increases, the pressure in the sealed chamber 91 decreases, and air flows into the sealed chamber 91 from the intake port 98. Such a decrease and increase in the volume of the sealed chamber 91 is repeated, and air is continuously discharged from the discharge port 99. The movable wall 92 is, for example, a diaphragm, and is formed of an elastically deformable material. The movable wall 92 has an insertion portion 921 into which the pressing members 87 and 88 are inserted, and is connected to the pressing members 87 and 88 via the insertion portion 921.

[0041] Furthermore, a valve 93 is provided between the sealed chamber 91 and the suction port 98. The valve 93 allows air to be sucked into the sealed chamber 91 from the suction port 98, and regulates the discharge of air from the sealed chamber 91 to the suction port 98. Furthermore, a valve 94 is provided between the sealed chamber 91 and the discharge port 99. The valve 94 allows air to be discharged from the sealed chamber 91 to the discharge port 99, and regulates the intake of air from the discharge port 99 to the sealed chamber 91. This makes it possible to more reliably and efficiently suck in and discharge air.

[0042] The configuration of pumps 3A, 3B has been described above. However, the configuration of pumps 3A, 3B is not particularly limited. For example, coil core parts 85, 86 may be provided in movable body 82, and magnets 83, 84 may be provided in housing 7. Magnets 83, 84 may be replaced with electromagnets. Furthermore, at least one pump part 9 is sufficient. Furthermore, the vibration of movable body 82 is not limited to reciprocating rotational vibration, and may be, for example, reciprocating linear vibration as described below.

[0043] Next, the operation of the pumps 3A and 3B will be described. For ease of explanation, the four pump units 9 will be distinguished below as "pump unit 9A," "pump unit 9B," "pump unit 9C," and "pump unit 9D."

[0044] When an AC voltage is applied from the control device 5 to the coils 859, 869, the movable body 82 rotates back and forth around the Z axis, centering on the shaft portion 81. Therefore, the pumps 3A, 3B repeat a first state in which the core magnetic poles 853, 864 are excited to the N pole and the core magnetic poles 854, 863 are excited to the S pole, thereby rotating the movable body 82 to one side, as shown in Fig. 4, and a second state in which the core magnetic poles 853, 864 are excited to the S pole and the core magnetic poles 854, 863 are excited to the N pole, thereby rotating the movable body 82 to the other side, as shown in Fig. 5.

[0045] In the first state, torque F1 in the direction of the arrow is generated by magnetic forces (attraction and repulsion) acting between magnets 83, 84 and coil core portions 85, 86, and movable body 82 rotates in the direction of torque F1. As a result, in pump portions 9A, 9D, movable wall 92 is pressed by pushers 87, 88, the volume of sealed chamber 91 decreases, and air in sealed chamber 91 is discharged from discharge port 99. Conversely, in pump portions 9B, 9C, the volume of sealed chamber 91 increases, and air flows into sealed chamber 91 from suction port 98.

[0046] In the second state, a torque F2 in the opposite direction to torque F1 is generated by the magnetic forces (attraction and repulsion) acting between magnets 83, 84 and coil core portions 85, 86, and movable body 82 rotates in the direction of torque F2. As a result, in pump portions 9B, 9C, movable wall 92 is pressed by pressing members 87, 88, the volume of sealed chamber 91 decreases, and air in sealed chamber 91 is discharged from discharge port 99. Conversely, in pump portions 9A, 9D, the volume of sealed chamber 91 increases, and air flows into sealed chamber 91 from suction port 98.

[0047] In this way, by alternately repeating the first state and the second state, a state in which air is discharged from pump sections 9A, 9D and a state in which air is discharged from pump sections 9B, 9C are alternately repeated, and air is continuously discharged from pumps 3A, 3B.

[0048] The above describes the driving of the pumps 3A and 3B. Next, the driving principle of the pumps 3A and 3B will be described. The vibration actuator 8 is driven based on the equation of motion shown in the following formula (1) and the circuit equation shown in the following formula (2).

[0049]

number

[0050]

number

[0051] Thus, the moment of inertia J [Kg*m 2 ], displacement angle (rotation angle) θ(t) [rad], thrust constant Kf [Nm / A], current i(t) [A], spring constant Ksp [Nm / rad], damping coefficient D [Nm / (rad / s)], etc. can be set appropriately within a range that satisfies formula (1). Also, voltage e(t) [V], resistance R [Ω], inductance L [H], and back electromotive force constant Ke [V / (rad / s)] can be set appropriately within a range that satisfies formula (2).

[0052] In the pumps 3A and 3B, the flow rate is set by the following formula (3), and the pressure is set by the following formula (4).

[0053]

number

[0054]

number

[0055] In this way, the flow rate Q [L / min] and piston area A [m 2 ], piston displacement x [m], drive frequency f [Hz], etc. can be appropriately set within the range that satisfies formula (3). 3 ], fluctuating volume ΔV [m 3 ] etc. can be appropriately set within a range that satisfies formula (4).

[0056] Next, the resonance frequency of vibration actuator 8 will be described. Vibration actuator 8 has a spring mass system structure that supports movable body 82 with a magnetic spring formed by the magnetic force acting between coil core parts 85, 86 and magnets 83, 84, and an air spring (fluid spring) formed by the elasticity of air in sealed chamber 91. Therefore, movable body 82 has a resonance frequency fr shown in the following formula (5). Therefore, by applying an AC voltage approximately equal to the resonance frequency fr to coils 859, 869, movable body 82 can be resonantly driven, and pumps 3A, 3B can be driven efficiently.

[0057]

number

[0058] The pumps 3A and 3B have been described above. As shown in FIG. 2, the pumps 3A and 3B are arranged side by side along the Y-axis direction in the same direction, and the vibration directions of the vibration actuators 8 are aligned. By arranging the pumps 3A and 3B so that the vibration directions of the vibration actuators 8 are aligned in this way, it becomes easy to cancel out the vibrations of the vibration actuators 8 or, conversely, to make them overlap each other, and the pump system 2 can be driven in a vibration suppression mode M1 or a vibration generation mode M2, which will be described later, by simple control. However, the arrangement of the pumps 3A and 3B is not particularly limited. For example, the pumps 3A and 3B may be arranged side by side along the X-axis direction in the same direction, or may be arranged overlapping each other in the Z-axis direction in the same direction.

[0059] ≪Pipeline 4≫ 2, the conduit 4 connects the pumps 3A, 3B and the bag body 18. Specifically, the conduit 4 has a discharge port connecting conduit 41 that connects a total of four discharge ports 99 of the pumps 3A, 3B to each other, a bag body connecting conduit 42 that connects two bags 18 provided on the belt 12, an intermediate conduit 43 that connects the discharge port connecting conduit 41 and the bag body connecting conduit 42, and an electromagnetic valve 44 provided in the middle of the intermediate conduit 43. The electromagnetic valve 44 is switched, under the control of the control device 5, between an open state (first state) in which the discharge port connecting conduit 41 and the bag body connecting conduit 42 communicate with each other, a closed state (second state) in which the discharge port connecting conduit 41 and the bag body connecting conduit 42 are blocked, and an open state (third state) in which the bag body connecting conduit 42 is closed and the discharge port connecting conduit 41 is open to the atmosphere.

[0060] <Control device 5> The control device 5 controls the operation of the pumps 3A, 3B and the electromagnetic valve 44. The control device 5 is, for example, configured as a computer, and has a processor for processing information, a memory communicatively connected to the processor, and an external interface. In addition, various programs executable by the processor are stored in the memory, and the processor reads and executes the various programs stored in the memory.

[0061] The control device 5 also has a vibration suppression mode M1 and a vibration generation mode M2 ​​as drive modes for driving the pumps 3A and 3B. The vibration suppression mode M1 is a drive mode in which the pumps 3A and 3B are driven so that the vibrations of the vibration actuators 8 of the pumps 3A and 3B are offset, and no vibration is generated. On the other hand, the vibration generation mode M2 ​​is a drive mode in which the pumps 3A and 3B are driven so that the vibrations of the vibration actuators 8 of the pumps 3A and 3B are superimposed, and vibration is generated. Furthermore, the control device 5 has, as the vibration generation mode M2, a first vibration generation mode M21 and a second vibration generation mode M22 that generate vibrations with different intensities and rhythms.

[0062] The vibration generation mode M2 ​​is used as a notification means for notifying the user by using vibration, like a vibrator. In this way, by using the pump system 2 as a notification means, it is not necessary to mount a notification means such as a vibrator separately from the pump system 2, so that the smartwatch 1 can be made smaller, its structure simplified, and its costs reduced. In particular, the smartwatch 1 can be switched between the vibration suppression mode M1 and the vibration generation mode M2, so that vibration can be turned ON / OFF. Therefore, vibration can be generated only when necessary.

[0063] As described above, while each of the pumps 3A and 3B is being driven, the movable body 82 reciprocates around the shaft portion 81. Therefore, vibrations corresponding to the reciprocating rotation of the movable body 82 are generated in each of the pumps 3A and 3B. Therefore, the control device 5 changes the phase difference between the vibrations of the movable body 82 of the pump 3A and the vibrations of the movable body 82 of the pump 3B, and cancels out the two vibrations or superimposes and amplifies them, thereby switching between the vibration suppression mode M1, the first vibration generation mode M21, and the second vibration generation mode M22. According to this method, these modes can be switched easily and instantly.

[0064] In the vibration suppression mode M1, the driving of the pumps 3A and 3B is controlled so that the vibrations generated in the pumps 3A and 3B are offset, that is, cancelled out. Specifically, as shown in FIG. 6, the pumps 3A and 3B are driven in opposite phases to each other by applying AC voltages Va and Vb, which are out of phase with each other by 180°, to the pumps 3A and 3B. In this driving, as shown in FIG. 7, when the pump 3A is in the first state, the pump 3B is in the second state, and when the pump 3A is in the second state, the pump 3B is in the first state. As a result, the vibrations of the pumps 3A and 3B are offset, and the vibration of the pump system 2 as a whole is suppressed, preferably to zero. In addition to the case where the phases are out of phase with each other by 180°, the "opposite phases" also include, for example, a case where there is an error that may occur technically.

[0065] According to the vibration suppression mode M1, the pump system 2 can be driven in a state where vibration is suppressed, preferably in a vibration-free state, which is effective, for example, when it is desired to supply air to the bag body 18 without generating vibration.

[0066] In the first vibration generation mode M21, the driving of the pumps 3A and 3B is controlled so that the vibration generated in the pump 3A and the vibration generated in the pump 3B are superimposed, that is, so that they are superimposed and amplified. Specifically, as shown in FIG. 8, the pumps 3A and 3B are driven in phase with each other by applying in-phase AC voltages Va and Vb to the pumps 3A and 3B. In this driving, as shown in FIG. 9, when the pump 3A is in the first state, the pump 3B is also in the first state, and when the pump 3A is in the second state, the pump 3B is also in the second state. As a result, the vibration of the pump 3A and the vibration of the pump 3B are superimposed, and vibration is generated in the entire pump system 2. In particular, by driving the pumps 3A and 3B in phase, larger vibration can be generated. Note that the "in-phase" includes not only the case where the phases match, but also the case where there is an error that can occur technically, for example.

[0067] In the second vibration generating mode M22, as in the first vibration generating mode M21, the driving of the pumps 3A and 3B is controlled so that the vibration generated in the pump 3A and the vibration generated in the pump 3B are superimposed. Specifically, as shown in FIG. 10, the pumps 3A and 3B are driven with a phase shift of 90° by applying AC voltages Va and Vb to the pumps 3A and 3B. In this driving, as shown in FIG. 11, when the pump 3A is in the first state, the pump 3B is in the middle of moving from the second state to the first state, when the pump 3B is in the first state, the pump 3A is in the middle of moving from the first state to the second state, when the pump 3A is in the second state, the pump 3B is in the middle of moving from the first state to the second state, and when the pump 3B is in the second state, the pump 3A is in the middle of moving from the second state to the first state. As a result, the vibration of the pump 3A and the vibration of the pump 3B are superimposed, and vibration is generated in the entire pump system 2.

[0068] In the second vibration generation mode M22, there is a timing when the two vibrations cancel each other out, so the strength of the vibration generated in the second vibration generation mode M22 is weaker than that generated in the first vibration generation mode M21. In addition, because the timings at which the two movable bodies 82 reach their dead points are shifted, the period of the vibration generated in the second vibration generation mode M22 is shorter than that of the vibration generated in the first vibration generation mode M21, and is approximately half that. However, the phase difference in the second vibration generation mode M22 is not limited to 90° and can be changed as appropriate within a range of, for example, about 90°±45°.

[0069] The vibration suppression mode M1 and the vibration generation mode M2 ​​have been described above. The control device 5 further has a pump drive mode Mp in which air is supplied from the pump system 2 to the bag body 18, and a vibration drive mode Mv in which the pump system 2 is vibrated without supplying air from the pump system 2 to the bag body 18. In this way, by having the pump drive mode Mp and the vibration drive mode Mv, the pump system 2 can not only be used as a pump, but also can be used only as a vibrator, and the convenience of the pump system 2 is significantly improved. Note that the pump drive mode Mp and the vibration drive mode Mv are switched by driving the electromagnetic valve 44. This makes it easy to switch between the pump drive mode Mp and the vibration drive mode Mv.

[0070] <Pump drive mode Mp> In the pump drive mode Mp, the pump system 2 is driven so that air is supplied from the pump system 2 to the bag body 18. Specifically, as shown in FIG. 12, the pumps 3A and 3B are driven with the electromagnetic valve 44 in an open state. As a result, air discharged from the pumps 3A and 3B is supplied to the bag body 18, and the bag body 18 inflates. In such a pump drive mode Mp, the pumps 3A and 3B may be driven in the vibration suppression mode M1 or in the vibration generation mode M2. When driven in the vibration suppression mode M1, the pump system 2 does not vibrate while air is being supplied to the bag body 18, and when driven in the vibration generation mode M2, the pump system 2 vibrates while air is being supplied to the bag body 18. For example, when the user needs to be notified of the air supply to the bag body 18 or when the user desires the notification, the pump system 2 may be driven in the vibration generation mode M2, and when there is no problem in not notifying the user of the air supply to the bag body 18 or when the user does not desire the notification, the pump system 2 may be driven in the vibration suppression mode M1. For example, these settings can be freely changed by the user.

[0071] The pump drive mode Mp as described above is mainly used when wearing the smartwatch 1. Specifically, the pump drive mode Mp is used when air is supplied to the bag body 18 to bring the belt 12 into close contact with the wrist after the smartwatch 1 is worn on the user's wrist using the buckle 16. However, the pump drive mode Mp can also be used for other purposes and operations.

[0072] <Vibration Drive Mode Mv> In the vibration drive mode Mv, the pump system 2 is driven so that air is not supplied from the pump system 2 to the bag body 18. Specifically, as shown in Fig. 13, the pumps 3A and 3B are driven in the vibration generation mode M2 ​​with the electromagnetic valve 44 in an open state. As a result, the air discharged from the pumps 3A and 3B is released to the atmosphere via the electromagnetic valve 44 and is not supplied to the bag body 18. Therefore, the function as a pump is not exerted, and the pump system 2 essentially functions only as a vibrator.

[0073] The vibration drive mode Mv described above can be used for various purposes, such as responding to input operations from the user, sending and receiving emails, making and receiving voice calls, making and receiving video calls, and completing electronic payments.

[0074] Here, the air released from the electromagnetic valve 44 to the atmosphere may be used for some purpose. The purpose is not particularly limited, but for example, air can be sprayed onto various parts housed within the watch body 11 to cool them. Furthermore, if the air is configured to be sprayed outside the watch body 11, for example, the user can cool themselves by directing the air sprayed from the watch body 11 towards their face, neck, etc.

[0075] Although the pump system and electronic device of the present invention have been described above based on the illustrated embodiment, the present invention is not limited thereto, and the configuration of each part can be replaced with any configuration having a similar function. In addition, any other configuration may be added to the present invention.

[0076] Also, for example, in the above-mentioned embodiment, the smart watch 1 is given as an example of the electronic device, but the electronic device is not limited thereto, and can be applied to all devices that can be equipped with a pump function and a vibrator function. Also, in the above-mentioned embodiment, the pump system 2 has a pair of pumps 3A and 3B, but is not limited thereto, and may have, for example, a plurality of pairs of pumps 3A and 3B. Also, in the above-mentioned embodiment, the movable body 82 of the pumps 3A and 3B is configured to rotate and vibrate back and forth around the shaft portion 81, but is not limited thereto. For example, as shown in FIG. 14, the movable body 82 may be configured to vibrate back and forth in a linear motion in the X-axis direction.

[0077] Further, for example, there is no particular limitation on the configuration of the pipeline 4. For example, as shown in Fig. 15, the pipeline 4 may have a first pipeline 4A that connects the pump 3A to one of the bags 18, and a second pipeline 4B that connects the pump 3B to the other bag 18. [Explanation of symbols]

[0078] 1...Smart watch 11...Watch body 12...Belt 13...Display 14...Main belt 15...Tip belt 16...Buckle 161...Attachment rod 17...Small hole 18...Bag 2...Pump system 3A, 3B...Pump 4...Pipe 4A...First pipe 4B...Second pipe 41...Outlet connection pipe 42...Bag connection pipe 43...Intermediate pipe 44...Solenoid valve 5...Control device 7...Housing 8...Vibration actuator 81...Axis 82...Movable body 83, 84...Magnet 831, 841...Magnetic pole surface 85...Coil core 851...Core 852...Core 853, 854...Core pole 853a, 854a...Magnetic pole surface 859...Coil 86...Coil core 861...Core 862...Core 863, 864...Core magnetic pole 863a, 864a...Magnetic pole surface 869...Coil 87, 88...Pressing element 9, 9A, 9B, 9C, 9D...Pump section 91...Sealed chamber 92...Moving wall 921...Insertion section 93, 94...Valve 98...Suction port 99...Discharge port F1, F2...Torque M1...Vibration suppression mode M2...Vibration generation mode M21...First vibration generation mode M22...Second vibration generation mode Mp...Pump drive mode Mv...Vibration drive mode Va, Vb...AC voltage

Claims

1. a vibration actuator that is electromagnetically driven to vibrate, and a pair of pumps that discharge a fluid by driving the vibration actuator; a vibration suppression mode in which the pair of pumps are driven so that vibrations of the vibration actuators are offset; a vibration generating mode in which the pair of pumps are driven so that the vibrations of the vibration actuators are superimposed on each other, switching between the vibration suppression mode and the vibration generation mode by changing a phase difference between the vibration of one of the vibration actuators and the vibration of the other of the vibration actuators; The pair of pumps are arranged so that the vibration directions of the vibration actuators are aligned, In the vibration generating mode, the pair of pumps are driven in phase; The pump system according to claim 1, wherein the vibration generation mode includes a plurality of modes having different phase differences.

2. The pump system according to claim 1 , wherein in the vibration suppression mode, the pair of pumps are driven in opposite phases.

3. An electronic device comprising the pump system described in claim 1 or 2.

4. The electronic device according to claim 3 , which is a wearable terminal comprising a supply portion to which the fluid is supplied from the pump system.

5. a pump drive mode in which the fluid is supplied from the pump system to the supplied part; The electronic device according to claim 4 , further comprising a vibration drive mode in which the pump system is vibrated without supplying the fluid from the pump system to the supplied part.

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