JP2017001722A - Liquid supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid supply device which automates discharging of a content liquid with a simple structure.SOLUTION: A liquid supply device 10 includes a container with a pump which vertically moves a nozzle head 921 to discharge a liquid in a liquid bottle 91 from a nozzle; and an actuator which presses the nozzle head 921. The actuator has a connection part 20b which fixes a body part 20a of the actuator to the container.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a liquid supply apparatus, and more particularly to a liquid supply apparatus that automatically discharges liquid in a container by mechanically pressing a nozzle head of a container with a pump.

  Patent Document 1 listed below discloses a trigger-type pump dispenser that can discharge a liquid content while keeping a nozzle in a fixed position.

JP-A-8-119353

  The trigger type pump dispenser of patent document 1 discharges a content liquid when a user pulls a trigger, The structure is not suitable for automation.

  In view of the above problems, the problem to be solved by the present invention is to provide a liquid supply apparatus capable of automating the discharge of the content liquid with a simple structure.

  In order to solve the above problems, a liquid supply apparatus of the present invention includes a container with a pump that discharges liquid in a container from a nozzle by moving the nozzle head up and down, and an actuator that depresses the nozzle head, The actuator has a connecting portion that fixes the main body of the actuator to the container.

  By using a pump of a container with a pump (hereinafter referred to as “dispenser pump”) and an actuator that presses down the nozzle head as the liquid discharge mechanism, it becomes possible to automate the discharge of the liquid in the container. Further, since the actuator itself has a connecting portion for fixing the main body portion to the container with a pump, the actuator of the present invention can be applied to a container with a pump that is widely distributed.

  Further, in the present invention, the actuator has a reciprocating portion that presses down the nozzle head, and the reciprocating portion abuts on the upper surface of the nozzle head on the movement trajectory and pushes down the nozzle head downward. A configuration is preferable.

  With the above configuration, it is possible to automate the discharge of the liquid in the container with a simple structure.

  Moreover, in this invention, it is preferable that the main body part of the actuator including the reciprocating part is configured to be supported directly above the nozzle head by the connecting part.

  With the above configuration, the nozzle head can be stably pushed down by the actuator, and the movement loss of the reciprocating portion can be reduced.

  Further, in the present invention, a cap integrated with the nozzle head is attached to the container, and the connecting portion is sandwiched between the container and the cap so that the position thereof is It is preferable that the structure is fixed.

  By sandwiching a part of the connecting portion of the actuator between the cap and the container, the main body of the actuator can be firmly fixed to the pump container.

  In the present invention, the connecting portion is made of a plate-like member, and the connecting portion is formed with a hook portion whose tip is bent toward the cap, and the hook portion is formed between the container and the cap. It is preferable that the position of the connecting portion is fixed by being sandwiched between them.

  By providing a hook portion at the distal end of the connecting portion and sandwiching the hook portion between the cap and the container, the connecting portion can be more easily attached to the container with the pump.

  Moreover, in this invention, it is preferable that the said connection part consists of a some plate-shaped member.

  By setting it as the said structure, a connection part can be attached more simply with respect to the container with a pump.

  In the present invention, the actuator main body includes a motor as a drive source, a disc cam as an eccentric cam, a reduction gear train that transmits the driving force of the motor to the disc cam, and the reciprocating motion. A slider that is a moving portion, and the slider has a pair of vertical frame portions that are frame portions extending in a reciprocating direction of the slider, and the disc cam has two arcs having different centers and radii. The disk cam is disposed between the pair of vertical frame portions of the slider, and the slider reciprocates linearly as the disk cam rotates, The nozzle head is preferably configured to move up and down following the reciprocation of the slider.

  As a mechanism of an actuator for pressing the nozzle head, a rack and pinion, a piston crank mechanism, or the like can be considered. However, when the actuator of the present invention is operated by a rack and pinion, a motor that can rotate in both forward and reverse directions is required, and for example, it is difficult to apply in an environment where only a commercial power supply (AC power supply) can be used. In addition, a piston crank mechanism can be operated by a motor that rotates only in one direction, but it is difficult to reduce the size of the actuator. Since the liquid supply apparatus of the present invention has the above-described configuration, it can operate even with a motor that rotates only in one direction, and the disc cam is disposed between the pair of vertical frame portions of the slider. The mechanism can be made smaller than the piston crank mechanism.

  In the present invention, it is preferable that an outer peripheral shape of the disc cam is an ellipse, the slider is a substantially rectangular frame, and the disc cam is disposed within a frame of the slider.

  With the above configuration, the configuration required for the disc cam and the slider can be mounted with a simple structure.

  Also, in the present invention, each of the vertical frame portions of the slider is formed with slider tooth portions, which are a plurality of protrusions protruding from the inner peripheral surface into the frame, and the outer peripheral surface of the disc cam. Is formed with a notch portion in which a part of the outer peripheral surface is notched radially inward, and in the vicinity of the notch portion, one end surface of the disc cam extends in the thickness direction. And the cutout portion and the thick portion form a cam tooth portion that is a tooth portion facing radially outward of the disc cam, the disc cam rotates, and the cam tooth portion It is preferable that the slider presses the nozzle head by pushing one of the slider tooth portions toward the nozzle head.

  Since the disc cam and the slider each have a tooth portion, the disc cam can control the position of the slider by the outer peripheral surface and the cam tooth portion.

  In the present invention, each slider tooth portion includes a short tooth portion and a long tooth portion having different lengths in the thickness direction of the slider, and each short tooth portion is the cam tooth portion of the disc cam. It is preferable that each of the long tooth portions is disposed so as to be in contact with the outer peripheral surface of the disc cam and the cam tooth portion.

  The slider tooth part has a short tooth part and a long tooth part, and the position of the disk cam in contact with these tooth parts is made different, so that more complicated position control of the slider by the disk cam becomes possible.

  Further, in the present invention, when the nozzle head pressed by the slider returns to the original position by the elastic force of the elastic member provided in the pump container, the disk cam has its outer peripheral surface or the cam teeth. It is preferable that the slider gradually returns the nozzle head to its original position by rotating while always pressing any one of the slider teeth toward the nozzle head.

  After being pushed down, the nozzle head of the dispenser pump returns to the original position by the elastic force of the elastic member provided in the dispenser pump itself. Here, when the nozzle head vigorously returns to the original position, the reaction may cause the container of the liquid supply apparatus to roll over, or the container to move to change the direction of the nozzle. In the liquid supply device of the present invention, the nozzle head gradually returns to the original position by the disk cam raising the slider while pressing the long tooth portion of the slider on its outer peripheral surface. Thereby, the influence on the arrangement position of the liquid supply apparatus by the return of the nozzle head can be suppressed.

  In the present invention, the motor is preferably an AC motor that rotates only in one direction.

  As described above, the actuator of the present invention can be operated by a motor that rotates only in one direction. For this reason, the use of an AC motor as the drive source motor can reduce the component cost of the actuator.

  As described above, according to the liquid supply apparatus of the present invention, it is possible to provide a liquid supply apparatus capable of automating the discharge of the content liquid.

It is a perspective view which shows the external appearance of the liquid supply apparatus concerning embodiment. It is an exploded view which shows the fixation structure of the actuator to the container with a pump. It is a disassembled perspective view of an actuator. It is a plane transparent view which shows a mode that the drive force of AC motor is transmitted to a disc cam. It is a figure which shows the meshing structure of the cam tooth part of a disc cam, and the slider tooth part of a slider. It is a figure which shows arrangement | positioning of a slider and disk cam when a nozzle head exists in an original position. It is a figure which shows operation | movement when an actuator depresses a nozzle head. It is a figure which shows operation | movement when an actuator returns a nozzle head to an original position.

  Embodiments of a liquid supply apparatus according to the present invention will be described below with reference to the drawings. The liquid supply apparatus 10 according to the present embodiment is an apparatus that is connected to a power source and automatically discharges liquid. In the following description, “upper” and “lower” refer to the Z direction (upper: Z1 side, lower: Z2 side) shown in the coordinate axis display of FIG. 1, and “front” and “rear” This refers to the Y direction (front: Y1 side, rear: Y2 side) indicated on the coordinate axis display. “Right” and “left” refer to the X direction (left: X1 side, right: X2 side) indicated in the same coordinate axis display.

(Configuration overview)
FIG. 1 is a perspective view showing an appearance of a liquid supply apparatus 10 according to the present embodiment. FIG. 2 is an exploded view showing a structure for fixing the motor unit 20 to the container 90 with a pump. As shown in FIG. 1, the liquid supply device 10 includes a pump-equipped container 90 and a motor unit 20 that is attached to the pump-equipped container 90 and is an actuator that presses the nozzle head 921 of the pump-equipped container 90.

  The container 90 with a pump includes a liquid bottle 91 that is a bottle-shaped container filled with a liquid, and a dispenser pump 92 that is integrated with a cap 93 that is attached to the liquid bottle 91. The motor unit 20 includes a main body portion 20a and a connecting portion 20b that fixes the main body portion 20a to the container 90 with a pump, and the main body portion 20a is supported immediately above the container 90 with a pump by the connecting portion 20b. The motor unit 20 depresses the nozzle head 921 by pressing the upper surface 921a of the nozzle head 921 with the slider 50, which is a reciprocating part, and discharges the liquid in the liquid bottle 91 from the nozzle 922.

(Motor unit fixing structure)
As shown in FIG. 2, the liquid bottle 91 includes, in order from the bottom, a cylindrical portion 91 c with a bottom, a shoulder portion 91 b whose outer peripheral surface is reduced in diameter toward the upper side, and a small-diameter tube whose upper end is open. It is comprised by the neck part 91a which is a part. A male screw 911 corresponding to a female screw (not shown) formed on the inner peripheral surface of the cap 93 is formed on the neck portion 91a.

  The connecting portion 20 b of the motor unit 20 includes a support plate portion 311 that is a pair of plate-like members extending downward from the main body portion 20 a of the motor unit 20. Each support plate portion 311 is disposed on the side (left and right) of the nozzle head 921, and a gap is provided between each support plate portion 311 and the nozzle head 921.

  Ribs 313 extending from the upper end 311b to the lower end 311c of each support plate portion 311 are formed on the outer end surface 311a of each support plate portion 311 along the center line in the width in the front-rear direction of the end surface 311a. A hook portion 312 that is bent at a right angle toward the cap 93 side is formed at a lower end 311c that is a tip portion of each support plate portion 311. Each hook portion 312 is sandwiched between the shoulder portion 91b of the liquid bottle 91 and the cap 93, and the cap 93 is screwed, whereby the main body portion 20a of the motor unit 20 is firmly fixed to the container 90 with the pump. . In addition, the structure of the connection part 20b is not restricted to the form of the support plate part 311 in this embodiment, You may be comprised by one plate-shaped member. Moreover, the shape of the front-end | tip part of the connection part 20b is not restricted to the form of the hook part 312 in this embodiment, The circular hole through which the neck part 91a of the liquid bottle 91 is penetrated may be provided.

  The liquid supply apparatus 10 according to the present embodiment uses a dispenser pump 92 and a motor unit 20 that presses down the nozzle head 921 as a liquid discharge mechanism. The size of the mechanism is reduced. Further, since the motor unit 20 itself includes the connecting portion 20b for fixing the main body portion 20a to the container 90 with a pump, the motor unit 20 of the present invention is applied to a container with a pump that is widely distributed. Thus, the manufacturing cost of the liquid supply apparatus 10 is reduced.

(Motor unit structure)
FIG. 3 is an exploded perspective view of the motor unit 20. As described above, the motor unit 20 includes the main body portion 20a and the connecting portion 20b. The connecting portion 20 b in the present embodiment is a pair of support plate portions 311, and the main body portion 20 a is a portion other than the support plate portion 311 in the motor unit 20.

  The main body 20a of the motor unit 20 includes an AC motor 70 that is a drive source, a disc cam 40 that is an eccentric cam having an elliptical outer periphery, and a reduction gear that transmits the driving force of the AC motor 70 to the disc cam 40. It has the row | line | column 80 and the slider 50 which is a substantially rectangular frame-shaped body. The AC motor 70 and the reduction gear train 80 are separated from the disc cam 40 and the slider 50 by a partition plate 60 which is a thin plate-like positioning member. These members are accommodated in a case 30 including a first case half 31 and a second case half 32 that can be divided into front and rear. The support plate portion 311 that is the connecting portion 20 b is formed integrally with the first case half 31 and extends downward from the lower surface of the first case half 31.

  The partition plate 60 is provided with a circular through hole 61, and the serration shaft 852 of the fifth gear 85 that constitutes the reduction gear train 80 is inserted into the through hole 61. The serration shaft 852 of the fifth gear 85 passes through the partition plate 60 and meshes with the serration hole 41 of the disc cam 40. Thereby, the disc cam 40 rotates integrally with the fifth gear 85 in the circumferential direction, and the driving force of the AC motor 70 is transmitted to the disc cam 40.

  The disc cam 40 is disposed within the frame of the slider 50, and the slider 50 reciprocates linearly in the vertical direction as the disc cam 40 rotates. The slider 50 has a pair of vertical frame portions 51 and 52 which are frame portions extending in the reciprocating direction of the slider 50, and each of the vertical frame portions 51 and 52 has a plurality of protrusions projecting from the inner peripheral surface thereof into the frame. Slider teeth 510 and 520, which are protrusions, are formed. The disc cam 40 is provided with a cam tooth portion 44 that meshes with the slider tooth portions 510 and 520.

  FIG. 4 is a plan transparent view showing how the driving force of the AC motor 70 is transmitted to the disc cam 40 via the reduction gear train 80. When the AC motor 70 is driven and the motor pinion 71 rotates, the driving force from the motor pinion 71 to the large-diameter gear portion 811 of the first gear 81 and from the small-diameter gear portion 812 of the first gear 81 to the second gear 82. The large-diameter gear portion 821, the small-diameter gear portion 822 of the second gear 82 to the large-diameter gear portion 831 of the third gear 83, and the small-diameter gear portion 832 of the third gear 83 to the large-diameter gear portion 841 of the fourth gear 84. To the large-diameter gear portion 851 of the fifth gear 85 and from the serration shaft 852 of the fifth gear 85 to the disc cam 40 while being decelerated.

  FIG. 5 is a view showing a meshing structure between the cam tooth portion 44 of the disc cam 40 and the slider tooth portion 510 of the slider 50. 5A is an external perspective view of the disc cam 40, FIG. 5B is a perspective sectional view showing the inner peripheral surface 51a of the vertical frame portion 51 of the slider 50, and FIG. It is a perspective sectional view showing a meshing state with slider tooth part 510.

  As shown in FIG. 5A, the outer peripheral surface 40 c of the disc cam 40 is formed with a notch 42 in which a part of the outer peripheral surface 40 c is notched radially inward, and in the vicinity of the notch 42. In this portion, a thick portion 43 is formed in which a front end surface 40a (upper surface as viewed in FIG. 5A) of the disc cam 40 extends in the thickness direction. The cutout portion 42 and the thick portion 43 form a cam tooth portion 44 composed of two tooth portions facing the radially outer side of the disc cam 40. The outer peripheral surface 40c has an elliptical shape in which two arcs having different radii from the center are smoothly connected, and the center of at least one arc is at a position different from the rotation center (852) of the disc cam. is there.

  As shown in FIG. 5B, a slider tooth portion 510 is provided on the inner peripheral surface 51 a of the vertical frame portion 51 of the slider 50 substantially at the center in the longitudinal direction. The slider tooth portion 510 is composed of two tooth portions 512 and a long tooth portion 511 which are adjacently arranged, and the short tooth portion 512 is located on the lower side (right side in FIG. 5B) with a long tooth portion. The part 511 is arranged on the upper side (left side as viewed in FIG. 5B).

  As for the short-tooth part 512 and the long-tooth part 511, the front end face (upper surface in FIG. 5B) in the tooth width direction is the front end part in the thickness direction of the inner peripheral surface 51a (upper end in FIG. 5B). Are aligned. The long tooth portion 511 extends over the entire length in the thickness direction of the inner peripheral surface 51a, and is disposed so as to be in contact with the cam tooth portion 44 and the outer peripheral surface 40c of the disc cam 40. The short tooth portion 512 has a length up to substantially the center in the width in the same thickness direction, and is disposed so as to be in contact with only the thick portion 43 in the cam tooth portion 44 of the disc cam 40.

  Since the disc cam 40 and the slider tooth portion 510 have the above-described configuration, the long tooth portion 511 of the slider tooth portion 510 has the outer peripheral surface 40c and the cam of the disc cam 40 as shown in FIG. The position in the vertical direction (right and left direction in FIG. 5C) is controlled by the tooth portion 44, and the short tooth portion 512 is only in the vertical direction (viewed in FIG. 5C) by the cam tooth portion 44 of the disc cam 40. The position in the left-right direction) is controlled.

  5 shows only the slider tooth portion 510 of the slider 50, the slider tooth portion 520 provided on the inner peripheral surface 52a of the vertical frame portion 52 similarly includes a long tooth portion 521 and a short tooth portion 522. . The relationship between the long tooth portion 521 and short tooth portion 522 and the disc cam 40 is the same as that of the slider tooth portion 510. The long tooth portion 521 and the short tooth portion 522 of the slider tooth portion 520 are disposed in the reverse order of the arrangement of the long tooth portion 511 and the short tooth portion 512 of the slider tooth portion 510, and the slider tooth portions 510 and 520 The long tooth portions 511 and 521 are arranged so that the longitudinal frame portions 51 and 52 have the same position in the longitudinal direction.

(Operation of motor unit)
The operation of the motor unit 20 will be described below with reference to FIGS. The dispenser pump 92 of the container 90 with the pump includes an elastic member (not shown) that urges the nozzle head 921 upward. When no force is applied to the nozzle head 921, the nozzle head 921 is moved by the elastic member. It is pushed up to the upper end of the movable range (hereinafter referred to as “original position”).

  FIG. 6 is a view showing the arrangement of the slider 50 and the disc cam 40 when the nozzle head 921 is in the original position. FIG. 6A is a front view of the slider 50 and the disc cam 40 (a surface when they are viewed in the Y2 direction from the Y1 side in FIG. 3), and FIG. The plate cam 40 is the rear surface (the surface when these are viewed in the Y1 direction from the Y2 side in FIG. 3).

  The AC motor 70 in the present embodiment is a motor that rotates only in one direction, and the disc cam 40 always rotates in the CW direction when the AC motor 70 is driven. When the nozzle head 921 is in the original position, the disc cam 40 is in a state in which the long tooth portion 521 of the vertical frame portion 52 is pushed up to the upper end by the cam tooth portion 44.

  FIG. 7 is a diagram illustrating an operation when the motor unit 20 extends the slider 50 downward and presses the nozzle head 921. When the AC motor 70 is driven from the state of FIG. 6 and the disc cam 40 rotates in the CW direction, the cam tooth portion 44 of the disc cam 40 contacts the short tooth portion 512 of the vertical frame portion 51 (FIG. 7A). )). Since the short tooth portion 512 has a length that does not contact the outer peripheral surface 40 c of the disc cam 40, it does not interfere with the rotation of the disc cam 40 until it contacts the cam tooth portion 44.

  When the AC motor 70 continues to drive, the cam tooth portion 44 pushes the short tooth portion 512 downward, whereby the long tooth portion 511 meshes with the notch portion 42, and the cam tooth portion 44 further becomes the long tooth portion. 511 is pushed downward (FIG. 7B). As a result, the slider 50 moves downward and depresses the nozzle head 921. In the circumferential direction of the disc cam 40, the position (the outer peripheral surface 40c on the opposite side of the cam tooth portion 44) that is symmetrical with the formation position of the cam tooth portion 44 has the smallest radius around the serration hole 41. Such a portion is not in contact with the slider teeth 510 and 520. For this reason, the outer peripheral surface 40c of the cam tooth portion 44 does not interfere with the long tooth portion 521 of the vertical frame portion 52 when the transition from the arrangement of FIG. 7A to the arrangement of FIG.

  FIG. 8 is a diagram illustrating an operation when the slider 50 of the motor unit 20 is lifted upward and the nozzle head 921 is returned to the original position. When the AC motor 70 is driven from the state of FIG. 7B and the disc cam 40 rotates in the CW direction, the engagement between the cam tooth portion 44 of the disc cam 40 and the slider tooth portion 510 of the vertical frame portion 51 is released. (FIG. 8A). However, the disc cam 40 is rotated while the long tooth portion 511 of the slider tooth portion 510 is continuously pressed down by the outer peripheral surface 40 c thereof, so that the slider 50 does not rise due to the elastic force of the nozzle head 921. Thereby, it is suppressed that the liquid supply apparatus 10 rolls over or the direction of the nozzle 922 changes due to the reaction of the nozzle head 921 returning to the original position.

  When the AC motor 70 continues to drive, the cam tooth portion 44 comes into contact with the short tooth portion 522 of the vertical frame portion 52 and pushes the short tooth portion 522 upward (FIG. 8B). Thereafter, when the AC motor 70 continues to be driven, the long tooth portion 521 meshes with the notch portion 42, and the cam tooth portion 44 further pushes the long tooth portion 521 upward. As a result, the slider 50 and the disc cam 40 return to the positions shown in FIG. 6 and the nozzle head 921 gradually returns to the original position following the rise of the slider 50.

  In the liquid supply apparatus 10 according to the present embodiment, the slider tooth portions 510 and 520 have long tooth portions 511 and 521 and short tooth portions 512 and 522, and the portions of the disc cam 40 with which these tooth portions contact are made different. Therefore, the complicated position control of the slider 50 by the disc cam 40 as described above is possible.

  The slider 50 in the present embodiment is configured to reciprocate linearly along the vertical direction directly above the nozzle head 921, but the reciprocating motion of the slider is not limited to this. The slider in the present invention may move in an arc shape as long as it can contact the upper surface 921a of the nozzle head on its movement locus and can push down the nozzle head 921. Further, the outer shape is not limited to a rectangular shape. Any shape can be used as long as it has a configuration corresponding to the pair of vertical frame portions 51 and 52 that move synchronously without obstructing the operation of the disc cam 40 and a portion for pressing the nozzle head 921. There may be. For example, if the main body 20a of the motor unit 20 is not disposed directly above the nozzle head 921, a configuration may be employed in which a slider is provided with a flange and the nozzle head 921 is pulled down from below.

  Further, in the liquid supply device 10 according to the present embodiment, the force of the motor unit 20 is applied to the vertically moving nozzle head 921 in the vertical direction. The influence on the arrangement position of the liquid supply apparatus 10 due to the inertial force and vibration accompanying the operation is suppressed.

  Furthermore, the liquid supply apparatus 10 according to the present embodiment operates the disk cam 40 and the slider 50 by the AC motor 70 that rotates only in one direction and presses the nozzle head 921, so that the rack and pinion or piston crank mechanism Compared to a mechanism for pressing the nozzle head 921 by using the nozzle, the cost is reduced and the mechanism is downsized.

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

  The present invention is useful, for example, in an application for automatically discharging a liquid detergent to a laundry basket of a washing machine.

DESCRIPTION OF SYMBOLS 10 Liquid supply apparatus 20 Motor unit 20a Main-body part 20b Connection part 30 Case 311 Support plate part 312 Hook part 40 Disc cam 40c Outer peripheral surface 42 Notch part 43 Thick part 44 Cam tooth part 50 Slider 51, 52 Vertical frame part 51a, 52a Inner peripheral surface 510, 520 of the vertical frame portion Slider tooth portion 511, 521 Long tooth portion 512, 522 Short tooth portion 70 AC motor 80 Reduction gear train 90 Container with pump 91 Liquid bottle 92 Dispenser pump 921 Nozzle head 922 Nozzle 93 Cap

Claims (12)

A container with a pump that discharges the liquid in the container from the nozzle by moving the nozzle head up and down;
An actuator for depressing the nozzle head, and a liquid supply device comprising:
The said actuator has a connection part which fixes the main-body part of this actuator to the said container, The liquid supply apparatus characterized by the above-mentioned. The actuator has a reciprocating part for pressing the nozzle head,
2. The liquid supply apparatus according to claim 1, wherein the reciprocating unit abuts on an upper surface of the nozzle head on a movement locus thereof and pushes the nozzle head downward.   The liquid supply apparatus according to claim 2, wherein a main body portion of the actuator including the reciprocating portion is supported immediately above the nozzle head by the connecting portion. The container is equipped with a cap integrated with the nozzle head,
4. The liquid according to claim 1, wherein a position of the connecting portion is fixed by being partly sandwiched between the container and the cap. 5. Feeding device. The connecting portion is made of a plate-shaped member,
The connecting portion is formed with a hook portion whose tip is bent toward the cap,
The liquid supply device according to claim 4, wherein the position of the connecting portion is fixed by sandwiching the hook portion between the container and the cap.   The liquid supply apparatus according to claim 5, wherein the connecting portion includes a plurality of plate-like members. The main body of the actuator is
A motor as a drive source;
A disc cam which is an eccentric cam;
A reduction gear train for transmitting the driving force of the motor to the disc cam;
A slider which is the reciprocating part,
The slider has a pair of vertical frame portions which are frame portions extending in the reciprocating direction of the slider,
Each of the disk cams has an outer peripheral surface that smoothly connects two arcs having different radii from the center,
The disc cam is disposed between the pair of vertical frame portions of the slider;
The slider reciprocates linearly as the disk cam rotates,
The liquid supply apparatus according to any one of claims 2 to 6, wherein the nozzle head moves up and down following the reciprocation of the slider. The outer shape of the disc cam is an ellipse,
The slider is a substantially rectangular frame,
The liquid supply device according to claim 7, wherein the disc cam is disposed within a frame of the slider. Each of the vertical frame portions of the slider is formed with a slider tooth portion that is a plurality of protrusion portions protruding into the frame from its inner peripheral surface,
On the outer peripheral surface of the disc cam, a notch portion in which a part of the outer peripheral surface is notched radially inward is formed,
In the vicinity of the notch, a thick portion is formed in which one end surface of the disc cam extends in the thickness direction,
The notch and the thick part form a cam tooth part that is a tooth part facing the radially outer side of the disc cam,
9. The disk cam rotates, and the cam tooth portion pushes one of the slider tooth portions toward the nozzle head, whereby the slider pushes down the nozzle head. The liquid supply apparatus according to 1. Each slider tooth portion is composed of a short tooth portion and a long tooth portion having different lengths in the thickness direction of the slider,
Each of the short tooth portions is disposed so as to be in contact with only the thick portion of the cam tooth portion of the disc cam,
The liquid supply device according to claim 9, wherein each of the long tooth portions is disposed so as to be in contact with an outer peripheral surface of the disc cam and the cam tooth portion.   When the nozzle head pressed by the slider returns to the original position by the elastic force of the elastic member provided in the pump container, the disk cam is always on either the outer peripheral surface or the cam tooth portion. The liquid supply device according to claim 10, wherein the slider gradually returns the nozzle head to the original position by rotating while pressing a slider tooth portion toward the nozzle head.   The liquid supply apparatus according to any one of claims 1 to 11, wherein the motor is an AC motor that rotates only in one direction.

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