JP6427980B2 - Liquid ejection device - Google Patents

Description

  The present invention relates to a liquid discharge apparatus including a pump that discharges liquid.

  2. Description of the Related Art Conventionally, a liquid ejecting apparatus including a pump that ejects liquid is known, and the liquid ejecting apparatus is described in Patent Document 1. The liquid ejection device described in Patent Document 1 is a high-pressure washing machine that cleans an object by spraying liquid onto the object. The high-pressure washing machine has an apparatus main body, a tank that is placed on the apparatus main body and stores a cleaning liquid, and a pump provided in the apparatus main body. In addition, a cleaning gun is provided for injecting the cleaning liquid discharged from the pump toward the object.

  The pump includes a plunger as an operation member, a suction flow path connected to the tank, and a discharge flow path connected to the suction flow path. The discharge flow path is connected to the cleaning gun via a hose. The pump further includes a pressure chamber connected to the suction flow path and the discharge flow path, and a first one-way valve is provided between the pressure chamber and the suction flow path. A second one-way valve is provided between the pressure chamber and the discharge flow path. A cylinder that supports the plunger so as to be able to reciprocate is provided, and a crankshaft that transmits the power of the electric motor to the plunger is provided.

  In the high-pressure washer described in Patent Document 1, when the plunger reciprocates with the power of the electric motor, the tank cleaning liquid is sucked into the pressure chamber through the suction passage and discharged from the pressure chamber. The cleaning liquid discharged from the pressure chamber is supplied to the cleaning gun via the discharge channel and the hose, and the cleaning gun ejects the cleaning liquid from the nozzle.

JP2013-208526A

  However, in the pump described in Patent Document 1, since the operating member reciprocates and sucks the liquid and discharges the liquid, the apparatus main body may vibrate in the reciprocating direction of the operating member. .

  An object of the present invention is to provide a liquid ejection apparatus capable of suppressing the apparatus main body from vibrating in the reciprocating motion direction of an operating member.

A liquid discharge apparatus according to an embodiment includes a pump unit having a pump that sucks and discharges liquid by an operation member reciprocating along a first axis , and a motor that drives the pump, and supports the pump unit A liquid ejecting apparatus comprising: an apparatus main body that is arranged between the apparatus main body and the pump unit on the first axis, and that transmits vibrations transmitted from the pump unit to the apparatus main body. A first damping member to be damped and vibrations arranged between the device main body and the pump unit on a second axis perpendicular to the first axis, and transmitted from the pump unit to the device main body The pump unit is disposed between the first damping member and the second damping member in the first axial direction .

The liquid discharge apparatus according to another embodiment, a pump for sucking and discharging liquid operation member is reciprocated on the first axis, a rotary shaft rotatable about a second axis perpendicular to said first axis A pump unit having a motor having a rotation member that rotates so as to convert the rotational force of the motor into a force that reciprocates the operation member in a direction along the first axis, and supports the pump unit An apparatus main body, a first elastic member provided between the apparatus main body and the pump unit on the first axis, and a first elastic member provided between the apparatus main body and the pump unit on the second axis. 2 elastic members.

  According to the present invention, the vibration of the operating member that moves along the first axis is attenuated by the first damping member, and therefore the vibration of the apparatus main body can be suppressed.

It is a perspective view which shows the high pressure washing machine which is embodiment of the liquid discharge apparatus of this invention. It is a longitudinal cross-sectional view of the high-pressure washing machine shown in FIG. It is the bottom view which fractured | ruptured a part of high-pressure washing machine shown in FIG. FIG. 4 is a plan view of the pump unit shown in FIGS. 2 and 3. FIG. 4 is a plan sectional view of the pump unit shown in FIGS. 2 and 3. It is a wave form diagram which shows the discharge amount of the pump shown in FIG.2 and FIG.3.

  Hereinafter, an embodiment in which a liquid discharge apparatus of the present invention is applied to a high-pressure washing machine will be described in detail with reference to the drawings. The high-pressure washing machine 10 according to the present embodiment includes a washing machine body 25, a pump unit 26 provided in the washing machine body 25, and a battery pack 27 provided in the washing machine body 25. The pump unit 26 is connected to the cleaning gun 13 via the hose 12. The cleaning gun 13 is an ejection device that ejects the cleaning liquid as the liquid discharged from the pump unit 26. As the cleaning liquid, water or water containing a surfactant can be used. The first end of the hose 12 is connected to the cleaning gun 13, and the second end of the hose 12 is attached to and detached from the pump unit 26. The hose 12 is a pressure hose having rigidity capable of withstanding the pressure of the cleaning liquid. The cleaning gun 13 includes a gun body 14, an injection nozzle 15 attached to the gun body 14, a flow path provided in the gun main body 14, a valve provided in the flow path, a trigger 16 for opening and closing the valve, It has.

  A tank 17 is mounted on the cleaning machine body 25. The tank 17 is integrally formed of synthetic resin, and the inlet 18 of the tank 17 is closed by a cap 19. A locking projection 21 is provided on the outer wall 20 of the tank 17. A discharge port 23 is provided at the bottom 22 of the tank 17, and a check valve 24 for opening and closing the discharge port 23 is provided. The cleaning liquid in the tank 17 is held in the tank 17 when the check valve 24 is closed. On the other hand, the cleaning liquid in the tank 17 is discharged from the discharge port 23 when the check valve 24 is opened.

  The battery pack 27 accommodates a plurality of battery cells in a housing case. The battery cell includes a secondary battery that can be repeatedly charged and discharged, for example, a lithium ion battery. The cleaning machine main body 25 includes a bottom plate 28 and a top plate 29, and a wall plate 30 that connects the bottom plate 28 and the top plate 29. A support wall 31 is provided continuously to the top plate 29, and the tank 17 is placed in a recess 32 surrounded by the support wall 31. A buckle 33 is attached to the support wall 31, and the tank 17 is fixed to the washing machine body 25 when the buckle 33 is hung on the locking projection 21. When the buckle 33 is removed from the locking projection 21, the tank 17 and the cleaning machine main body 25 can be separated.

  The pump unit 26 includes an electric motor 34 and a pump 35. The electric motor 34 is provided in a motor case 37, and the electric motor 34 includes a stator 38 fixed in the motor case 37 and a rotor 39 provided rotatably in the motor case 37. Yes. The motor case 37 is formed of synthetic resin or metal, and the motor case 37 includes a cylindrical portion 40 and an end plate 41 that is continuous with the cylindrical portion 40.

  Further, a first gear case 42 is fixed to the cylindrical portion 40 on the side opposite to the end plate 41, a bearing 43 is provided on the first gear case 42, and a bearing 44 is provided on the end plate 41. A screw member 75 that fixes the first gear case 42 and the motor case 37 to each other is provided. The rotor 39 has a rotating shaft 45 and a permanent magnet 46 attached to the rotating shaft 45, and the rotating shaft 45 is supported by two bearings 43 and 44 so as to be rotatable about the axis A1. That is, the two bearings 43 and 44 and the rotating shaft 45 are arranged concentrically.

  A drive gear 47 is formed on the outer peripheral surface of the rotating shaft 45 at a location arranged in the first gear case 42. A driven gear 48 that meshes with the drive gear 47 is provided in the first gear case 42. The number of teeth of the driven gear 48 is greater than the number of teeth of the drive gear 47, and the drive gear 47 and the driven gear 48 constitute a reduction mechanism. Further, a projection 49 is provided on the outer surface of the end plate 41. The protrusion 49 protrudes from the outer surface of the end plate 41 in the direction along the axis A1. The protrusion 49 has a cylindrical shape with the axis A1 as the center.

  The pump 35 includes a cylinder 50, a split piece 76, and a second gear case 77, and a single piece provided so as to be operable from the cylinder 50 to the split piece 76 and between the first gear case 42 and the second gear case 77. And a plunger 51. The cylinder 50 is integrally formed of metal or synthetic resin, the divided piece 76 is integrally formed of metal or synthetic resin, and the second gear case 77 is integrally formed of metal or synthetic resin. The plunger 51 is formed of metal or synthetic resin. The split piece 76 is interposed between the cylinder 50 and the second gear case 77 in the direction along the axis C1. The cylinder 50, the split piece 76, and the second gear case 77 are fixed by a screw member 78. The first gear case 42 and the second gear case 77 are fixed to each other by a screw member 79.

  A bearing 52 is provided in the second gear case 77, a bearing 53 is provided in the first gear case 42, and a crankshaft 54 that is rotatably supported by the two bearings 52, 53 is provided. An axis B1 that is the rotation center of the crankshaft 54 is parallel to the axis A1. The crankshaft 54 is disposed from the first gear case 42 to the second gear case 77, and the driven gear 48 is fixed to the crankshaft 54.

  A supply pipe 55 continuing to the cylinder 50 is provided, and an end of the supply pipe 55 is disposed in the recess 32. A nozzle 56 is attached to a portion of the supply pipe 55 that is disposed in the recess 32. When the tank 17 is placed in the recess 32, the check valve 24 is opened by the nozzle 56, and the cleaning liquid in the tank 17 is discharged to the first flow path 57 of the nozzle 56. The supply pipe 55 has a second flow path 58, and the second flow path 58 is connected to the first flow path 57. The cylinder 50 includes a suction channel 59 connected to the second channel 58, a pressure chamber 60, and a discharge channel 61. A one-way valve 62 is provided between the suction passage 59 and the pressure chamber 60, and a one-way valve 63 is provided between the pressure chamber 60 and the discharge passage 61.

  The plunger 51 is connected to the crankshaft 54 via a connecting rod 64. The crankshaft 54 and the connecting rod 64 are disposed in the first gear case 42 and the second gear case 77. The crankshaft 54 and the connecting rod 64 constitute a crank mechanism, and the crank mechanism converts the rotational force of the driven gear 48 into the reciprocating motion force of the plunger 51. The plunger 51 can reciprocate in the direction along the axis C1, and when the plunger 51 operates, the pressure in the pressure chamber 60 increases or decreases. A discharge port 65 is provided in the cylinder 50, and the discharge channel 61 is connected to the discharge port 65. The hose 12 is connected to the discharge port 65. When the pump unit 26 is viewed in plan, the axis A1 and the axis B1 are substantially parallel as shown in FIG. In addition, the axis C1 intersects the axis A1 and the axis B1, specifically, substantially orthogonal. On the outer surface of the second gear case 77, a projection 66 is provided concentrically with the axis B1, and a projection 67 is provided concentrically with the axis C1. The protrusions 66 and 67 are both cylindrical.

  Three damping members 68, 69 and 70 are provided in the cleaning machine main body 25. The three damping members 68, 69, and 70 are integrally formed of an elastic body, for example, a rubber-like elastic body or an elastomer. The attenuation member 68 has a recess 71, the attenuation member 69 has a recess 72, and the attenuation member 70 has a recess 73. The protrusion 49 is fitted into the concave portion 71 of the attenuation member 68, the projection 66 is fitted into the concave portion 72 of the attenuation member 69, and the projection 67 is fitted into the concave portion 73 of the attenuation member 70. As described above, the pump unit 26 is supported by the cleaning machine body 25 via the three damping members 68, 69, and 70.

  The damping member 68 is disposed between the cleaning machine main body 25 and the motor case 37 in a direction along the axis A1. The damping member 68 is disposed between the cleaning machine main body 25 and the electric motor 34 in the direction along the axis A1. The damping member 68 is disposed between the cleaning machine body 25 and the pump unit 26 in a direction along the axis A1. The damping member 68 is disposed coaxially or concentrically with the bearing 44 around the axis A1.

  The damping member 69 is disposed between the cleaning machine main body 25 and the second gear case 77 in the direction along the axis B1. The damping member 69 is disposed between the cleaning machine main body 25, the crankshaft 54, and the connecting rod 64 in the direction along the axis B1. The damping member 69 is disposed between the cleaning machine main body 25 and the pump unit 26 in the direction along the axis B1. The damping member 69 is disposed coaxially or concentrically with the bearing 52 around the axis B1.

  The damping member 70 is disposed between the cleaning machine main body 25 and the pump 35 in a direction along the axis C1. The damping member 70 is disposed between the cleaning machine main body 25 and the pump unit 26 in a direction along the axis C1. A main switch 74 is provided in the cleaning machine body 25. The damping member 70 is disposed coaxially or concentrically with the axis C1.

  When the operator operates the main switch 74, the electric power of the battery pack 27 is supplied to the electric motor 34, the pump 35 is driven, the cleaning liquid in the tank 17 is sucked into the pump 35, and the cleaning liquid discharged from the pump 35 is It is supplied to the cleaning gun 13 via the hose 12. The pressure of the cleaning liquid discharged from the pump 35 is higher than the pressure of the cleaning liquid sucked into the pump 35. When the trigger 16 of the cleaning gun 13 is operated, a valve provided in the cleaning gun 13 is opened and the cleaning liquid is sprayed from the spray nozzle 15. Accordingly, it is possible to remove the object, for example, the dirt on the vehicle, the dirt on the outer wall of the building, and the dirt on the garden.

  Next, the operation of the pump unit 26 will be specifically described. When electric power is supplied to the electric motor 34, a rotating magnetic field is formed by the stator 38 and the permanent magnet 46, and the rotor 39 rotates. The rotational force output from the rotary shaft 45 constituting the rotor 39 is transmitted to the crankshaft 54 via the drive gear 47 and the driven gear 48, and the plunger 51 reciprocates in the cylinder 50. The crankshaft 54 converts rotational force into reciprocating power. When the plunger 51 moves rightward in FIG. 5, the pressure in the pressure chamber 60 decreases, the one-way valve 62 opens, and the one-way valve 63 closes. For this reason, the cleaning liquid in the tank 17 flows into the pressure chamber 60 via the second flow path 58 and the suction flow path 59.

  On the other hand, when the plunger 51 moves leftward in FIG. 5 and the one-way valve 62 and the one-way valve 63 are closed, the pressure in the pressure chamber 60, that is, the pressure of the cleaning liquid increases. When the pressure in the pressure chamber 60 exceeds a predetermined value, the one-way valve 63 is opened, and the cleaning liquid in the pressure chamber 60 is discharged to the discharge flow path 61. The cleaning liquid discharged to the discharge flow path 61 is supplied to the cleaning gun 13 via the hose 12. The high pressure washer 10 repeats the above operation while the rotor 39 of the electric motor 34 is rotating.

  When the operator operates an injection pressure adjustment dial provided in the cleaning machine main body 25, the injection pressure of the cleaning liquid injected from the injection nozzle 15 can be adjusted. The rotor 39 of the electric motor 34 has a higher rotational speed as the injection pressure is set higher. As the rotation speed of the rotor 39 increases, the plunger 51 increases the number of reciprocating operations per unit time.

  The discharge amount of the cleaning liquid discharged from the pump 35 when the electric motor 34 is driven will be described with reference to FIG. The waveform shown in FIG. 6 theoretically shows the amount of discharged water. The discharge amount of the pump 35 changes during one cycle in which the plunger 51 reciprocates once. One cycle includes a forward movement section in which the plunger 51 operates toward the left in FIG. 5 and a backward movement section in which the plunger 51 operates in the right direction in FIG. The pump 35 increases or decreases the discharge amount in the forward movement section, but does not discharge in the backward movement section. In the waveform of the discharge amount shown in FIG. 6, since the section in which the plunger 51 reciprocates is extracted, the discharge amount changes intermittently, but the cleaning liquid is discharged from the spray nozzle 15 of the cleaning gun 13. It is continuously injected.

  In the high pressure washer 10 of the present embodiment, the pump unit 26 is supported by the washer body 25 via three damping members 68, 69, 70 in a plan view parallel to the axis C1. First, the cylinder 50 is supported by the cleaning machine body 25 via the damping member 70. For this reason, when the plunger 51 vibrates in the direction along the axis C1, the damping member 70 receives the thrust load and the vibration is attenuated. When the discharge pressure of the pump 35 increases, the number of operations of the plunger 51 increases and the amplitude of vibration transmitted to the cleaning machine main body 25 increases, but it is possible to suppress the increase in the amplitude of the vibration.

  Further, since the damping member 70 is disposed concentrically with the axis C1, the area where the damping member 70 receives the thrust load can be relatively widened. Therefore, the damping member 70 can effectively attenuate the vibration, can suppress the concentration of stress on the damping member 70, and can prevent the damping member 70 from being damaged.

  Further, the cylinder 50 is supported by the cleaning machine main body 25 via a damping member 69. For this reason, when the crankshaft 54 rotates, the damping member 69 receives a radial load transmitted to the cylinder 50 via the bearing 52 and attenuates the vibration. Further, the motor case 37 is supported by the cleaning machine main body 25 via a damping member 68. For this reason, when the rotor 39 rotates, the damping member 68 receives a radial load transmitted to the motor case 37 via the bearing 44 and attenuates the vibration.

  Further, as shown in FIG. 5, the rotary shaft 45 and the plunger 51 are arranged orthogonally in a plan view parallel to the axis C <b> 1. Therefore, the arrangement space of components in the direction along the axis C1 is shortened, and the pump unit 26 can be downsized in the direction along the axis C1.

  Further, as shown in FIG. 3, two damping members 68 and 69 are disposed on both sides of the pump 35 in the radial direction centered on the axis C1 in a bottom view parallel to the axis C1, and the damping member is disposed on the axis C1. 70 is arranged. For this reason, the pump unit 26 attenuates the vibration in the direction along the axis C1, and also attenuates the vibration in the direction along the axes A1 and B1. Therefore, the pump unit 26 is suppressed from oscillating in all directions with respect to the cleaning machine main body 25 in a bottom view parallel to the axis C1.

  Further, the attenuation member 70 is provided with a recess 73, the attenuation member 68 is provided with a recess 71, and the attenuation member 69 is provided with a recess 72. For this reason, in the assembly process of the high pressure washer 10, the protrusion 49 is inserted into the recess 71 of the attenuation member 68, the protrusion 66 is inserted into the recess 72 of the attenuation member 69, and the protrusion 67 is inserted into the recess 73 of the attenuation member 70. By attaching the pump unit 26 in the state to the cleaning machine body 25, the assembly workability of the high-pressure cleaning machine 10 is improved.

  A correspondence relationship between the configuration described in this embodiment and the configuration of the present invention will be described. The high-pressure washing machine 10 corresponds to the liquid discharge apparatus of the present invention, the cleaning machine main body 25 corresponds to the apparatus main body of the present invention, the plunger 51 corresponds to the operating member of the present invention, and the axis C1 corresponds to the present invention. The damping member 70 corresponds to a first damping member and a first elastic member of the present invention. The cylinder 50 corresponds to the first case of the present invention, the electric motor 34 corresponds to the motor of the present invention, the bearing 44 corresponds to the first bearing of the present invention, and the motor case 37 corresponds to the first case of the present invention. It corresponds to the second case, the bearing 52 corresponds to the second bearing of the present invention, and the second gear case 77 corresponds to the third case of the present invention.

  The damping member 68 corresponds to the second damping member and the second elastic member of the present invention, the damping member 69 corresponds to the third damping member and the third elastic member of the present invention, and the axis A1 corresponds to the present invention. The axis B1 corresponds to the third axis of the present invention. Further, the protrusion 67 corresponds to the first attachment portion of the present invention, the protrusion 49 corresponds to the second attachment portion of the present invention, and the protrusion 66 corresponds to the third attachment portion of the present invention. The crankshaft 54 and the connecting rod 64 correspond to the conversion member of the present invention. The first gear case 42 and the second gear case 77 correspond to the gear case of the present invention, and the cleaner main body 25 corresponds to the apparatus main body of the present invention.

  In the present invention, the axis does not physically exist but is an engineering imaginary line. Therefore, in the present invention, “a member is disposed on the axis”, “a member is disposed on the axis”, “a member is disposed coaxially with the axis”, and “a member positioned on the axis” are It means that the member comes into contact or the axis passes through the member. In the present invention, “a member arranged coaxially with the bearing” means that the member is arranged in the projection region in the direction along the axis of the bearing. In the present invention, a right angle includes a substantially right angle, and a parallel includes a substantially parallel.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the liquid discharge device of the present invention is a device that pressurizes and discharges the liquid sucked by a pump, and the liquid discharge device of the present invention is a high-pressure washing machine that removes dirt on an object, Spraying device for spraying on the field in the form of a spray, and spraying device for spraying chemicals in the form of mist and spraying on vegetables or planted trees to control pests. That is, in the present invention, the liquid discharged from the pump includes water, a cleaning liquid, and a chemical liquid.

  In this invention, the secondary battery which supplies electric power to an electric motor is provided. That is, the cleaning machine according to the embodiment is portable. The secondary battery may be a battery other than a lithium ion battery, for example, a nickel cadmium battery, a nickel hydrogen battery, or a lithium ion polymer battery. The liquid discharge apparatus of the present invention includes a structure capable of supplying power to the electric motor from both the secondary battery and the commercial power source. In addition, the liquid ejection device of the present invention includes a structure that can supply power to the electric motor only from a commercial power source.

  Furthermore, the liquid discharge apparatus of the present invention includes a structure for sucking water supplied from a tap through a pump in addition to a structure for sucking liquid in a tank by a pump. In addition, the pump according to the embodiment includes one plunger that reciprocates. However, if the pump generates pulsation in the casing due to the reciprocation of the plunger, the pump can be downsized and vibration can be reduced. . Pulsation means that vibrations having the same amplitude and length are repeated periodically.

  Furthermore, the hardness of the elastic material, that is, the rubber elasticity may be constant as a whole or may be different. For example, the hardness of a portion that receives a load during vibration can be made higher than the hardness of other portions. Thus, by partially changing the hardness of the damping member, it is possible to finely adjust the vibration damping function with respect to the vibration generated by the pump, and there is an effect of further suppressing the vibration.

  The first attachment portion of the present invention may be provided in either the first case or the first damping member. The second attachment portion of the present invention may be provided in either the second case or the third damping member. The third attachment portion of the present invention may be provided in either the third case or the third damping member. In the present invention, the motor as a power source for driving the pump includes an electric motor, a pneumatic motor, a hydraulic motor, and an engine. Furthermore, a plurality of plungers, that is, two or more plungers as operation members of the present invention may be provided. Furthermore, the power conversion mechanism that converts the rotational force of the motor into the reciprocating power of the operating member includes a cam mechanism in addition to the crank mechanism.

  DESCRIPTION OF SYMBOLS 10 ... High pressure washing machine, 25 ... Washing machine main body, 34 ... Electric motor, 35 ... Pump, 37 ... Motor case, 44, 52 ... Bearing, 49, 66, 67 ... Projection, 50 ... Cylinder, 51 ... Plunger, 68, 69, 70 ... damping member, 77 ... second gear case, A1, B1, C1 ... axis.

Claims (9)

A pump in which an operating member reciprocates along a first axis to suck and discharge liquid;
A pump unit having a motor for driving the pump;
An apparatus main body for supporting the pump unit ;
A first damping member disposed on the first axis between the device main body and the pump unit and dampening vibration transmitted from the pump unit to the device main body ;
A second damping member disposed between the device main body and the pump unit on a second axis orthogonal to the first axis and attenuating vibration transmitted from the pump unit to the device main body; ,
Have
The liquid discharge device , wherein the pump unit is disposed between the first damping member and the second damping member in the first axial direction . The second damping member is disposed on the second axis;
It is disposed between the apparatus main body and the pump unit on a third axis that is orthogonal to the first axis and parallel to the second axis, and is transmitted from the pump unit to the apparatus main body. A third damping member for damping
The pump unit is disposed between the first damping member and the third damping member in the first axis direction,
2. The liquid ejection device according to claim 1 , wherein the pump unit is disposed between the second damping member and the third damping member in the second axis direction . The motor outputs a power to be transmitted to the operating member, and has a rotation shaft that can rotate around the second axis.
A crankshaft that converts the rotational force of the rotating shaft into a force that causes the operating member to reciprocate in a direction along the first axis;
A first case operatively supporting the operating member;
A second case for rotatably supporting the rotating shaft via a first bearing;
Is further provided,
The pump unit has a third case that rotatably supports the crankshaft via a second bearing,
The second damping member is disposed coaxially with the first bearing on the second axis;
It said third damping member, the third is arranged on the axis on the second bearing coaxially, and you damp the vibrations transmitted to the apparatus main body via the third case, in claim 2 The liquid discharge apparatus as described. The first case, the second case, and the third case are fixed to each other ;
The first case is supported by the first damping member via a first attachment portion,
The second case is supported by the second damping member via a second attachment portion,
The liquid ejection device according to claim 3, wherein the third case is supported by the third damping member via a third attachment portion . The pump unit has a first protrusion provided on the first axis,
The first damping member has a first recess,
5. The liquid ejection apparatus according to claim 1, wherein the first protrusion is fitted into the first recess, and the pump unit is supported by the apparatus main body . A pump for sucking and discharging liquid operation member is reciprocated on the first axis, a motor having a rotary shaft rotatable about a second axis perpendicular to the first axis, the rotational force of the motor A pump unit having a conversion member that rotates so as to convert the operation member into a force that reciprocates in a direction along the first axis;
An apparatus main body for supporting the pump unit;
A first elastic member provided between the apparatus main body and the pump unit on the first axis;
A second elastic member provided between the apparatus main body and the pump unit on the second axis ;
A liquid ejection apparatus comprising: The pump unit has a first protrusion provided on the first axis,
The first elastic member has a first recess provided on the first axis,
The first protrusion is fitted into the first recess, and the pump unit is supported by the apparatus main body,
The pump unit has a second protrusion provided on the second axis,
The second elastic member has a second recess provided on the second axis,
The second protrusion is fitted in the second recess, the pump unit that is supported by the apparatus main body, the liquid ejecting apparatus according to claim 6. A conversion member that is located on a third axis parallel to the second axis and converts the rotation of the motor into a reciprocating motion of the operation member;
A third elastic member disposed between the conversion member and the apparatus main body on the third axis;
A liquid ejection apparatus according to claim 6 or 7, comprising: A motor case for housing the motor;
A gear case that houses the conversion member;
Have
The pump, the motor case, and the gear case are fixed to each other;
The first elastic member is provided in the pump;
The second elastic member is provided on the motor case,
It said third elastic member, the Ru provided to the gear case, a liquid ejecting apparatus according to claim 8.

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