WO2001040648A1 - Came, dispositif d'amenee automatique de produit chimique par la came et structure de fixation de plateau du dispositif d'amenee de produit chimique - Google Patents

Came, dispositif d'amenee automatique de produit chimique par la came et structure de fixation de plateau du dispositif d'amenee de produit chimique Download PDF

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Publication number
WO2001040648A1
WO2001040648A1 PCT/JP2000/006125 JP0006125W WO0140648A1 WO 2001040648 A1 WO2001040648 A1 WO 2001040648A1 JP 0006125 W JP0006125 W JP 0006125W WO 0140648 A1 WO0140648 A1 WO 0140648A1
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WO
WIPO (PCT)
Prior art keywords
cam
cam plate
chemical liquid
supply device
tray
Prior art date
Application number
PCT/JP2000/006125
Other languages
English (en)
Japanese (ja)
Inventor
Alikhan Abulkassov
Tetsuya Nomoto
Original Assignee
Saraya Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saraya Co., Ltd. filed Critical Saraya Co., Ltd.
Publication of WO2001040648A1 publication Critical patent/WO2001040648A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • F04B9/042—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H25/00—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms
    • F16H25/08—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion
    • F16H25/14—Gearings comprising primarily only cams, cam-followers and screw-and-nut mechanisms for interconverting rotary motion and reciprocating motion with reciprocation perpendicular to the axis of rotation

Definitions

  • the present invention relates to an automatic chemical liquid supply device equipped with a power supply device and a cam device, and a tray mounting structure of the automatic chemical liquid supply device.
  • the present invention relates to a cam device including a cam plate and a cam follower member that performs a linear motion in conjunction with the rotation of the cam plate, an automatic chemical solution supply device incorporating the cam device, and a tray mounting structure of the automatic chemical solution supply device.
  • a cam device including a cam plate and a cam follower member that performs a linear motion in conjunction with the rotation of the cam plate, an automatic chemical solution supply device incorporating the cam device, and a tray mounting structure of the automatic chemical solution supply device.
  • a supply device for supplying a chemical solution such as a lab solution or a disinfectant solution for cleaning or disinfecting a hand or a fingertip
  • a use operation of a user specifically, 2.
  • an automatic chemical liquid supply device that detects a user's hand reaching operation and the like and can automatically supply a chemical liquid.
  • Japanese Patent Application Laid-Open No. 9-14129 / 29 discloses a chemical solution container provided with a manual pump mechanism widely used in homes and the like for the quantitative supply of stone liquid and the like, and the manual pump mechanism described above.
  • the supply of the chemical solution can be automated by driving the pump mechanism in a non-contact manner, and a more clean and sanitary supply of the chemical solution can be performed.
  • the replenishment of chemicals and the change of the type can be easily performed by replacing the entire container, and the risk of inconveniences such as contamination by foreign matter and contamination during the replacement is minimized.
  • the power supply to the pump drive mechanism and the detection sensor for driving the pump mechanism of the chemical solution container is performed by a battery (dry battery) built in the device, so that the chemical solution supply device can be easily moved.
  • the device can be installed at a desired place.
  • the pump mechanism of the chemical solution container as described above is attached to a sealing cap for sealing the opening of the container, sucks and discharges the chemical solution inserted into the container and stored therein.
  • the automatic chemical liquid supply device automatically performs the pressing operation of the pressing head.
  • a crank mechanism connected to an electric motor is provided to perform the pressing operation.
  • the push-in operation of the pad is automated.
  • the inventor of the present invention has been conducting research and development for further improving the performance of an automatic chemical liquid supply device incorporating such a chemical liquid container with a pump mechanism, and has been examining the state of discharge of the chemical liquid from a discharge nozzle. It was found that it is important to maintain the pushing speed when pushing the pushing head of the pump mechanism as constant as possible during the pushing stroke in order to make the pump head uniform and stable during the period. .
  • the spray pump or forming pump when the chemical solution in the container is ejected in the form of a mist or foam (so-called spray pump or forming pump), if the pushing speed fluctuates more than a certain degree during the stroke, the spray angle is too small. If the chemical does not spread sufficiently, or the particle size of the foam is too coarse to produce a sufficiently fine foam, the spray of the chemical does not become a good mist or foam, and in extreme cases, Partially dripping into a liquid makes it difficult to disinfect or wash hands, and also significantly impairs usability.
  • spray pump or forming pump if the pushing speed fluctuates more than a certain degree during the stroke, the spray angle is too small. If the chemical does not spread sufficiently, or the particle size of the foam is too coarse to produce a sufficiently fine foam, the spray of the chemical does not become a good mist or foam, and in extreme cases, Partially dripping into a liquid makes it difficult to disinfect or wash hands, and also significantly impairs usability.
  • the driving operation of the pump mechanism (the pressing operation of the pressing head) is performed by a crank mechanism connected to an electric motor.
  • the rotational motion of the electric motor is caused by engaging the base end of the crank with a projection provided near the periphery of the disk rotated by the electric motor via the gear mechanism.
  • the pump mechanism is driven and operated at the tip of the crank.
  • the movement of the tip of the crank during the pushing stroke is such that the rotation speed of the motor is constant. If there is, it will be performed at irregular speed.
  • the pushing speed at which the pushing head of the pump mechanism is pushed in varies greatly between the start and the end of the stroke, and the state of discharge of the chemical solution from the discharge nozzle is changed during the discharge period. It is difficult to achieve uniform and stable.
  • the driving operation of the pump mechanism is performed not by the crank mechanism as described above, but by a cam plate that is rotationally driven by a motor, and a cam follower member that slides on a peripheral portion of the cam plate to perform a linear reciprocating motion. It is also conceivable to use a cam device having the following.
  • the cam plate 144 has a configuration in which the peripheral shape is a simple circle, and the rotation axis 144 s is offset (eccentric) from the center of the circle. Is the most common.
  • Such a cam device is affected by a spring mounted in a manual pump mechanism of a chemical solution container when actually used in an automatic chemical solution supply device. That is, the spring exerts a reaction force on the pump pushing operation, and the spring force assists the return operation. For this reason, as in the case of the above-mentioned circular eccentric cam, if the pushing operation is performed only by rotating the cam plate 144 by 180 degrees, the load increases, and the driving force is applied to the cam plate 144. This has a negative effect on the life of the motor and its reduction gear. In addition, when a dry battery is used as the power supply, Life is also shortened.
  • the cam plate is rotated so that the rotation angle of the cam plate corresponding to the pump pushing operation period becomes larger than 180 degrees.
  • the above-mentioned automatic chemical liquid supply device may be a table-mounting type which is used by being mounted on a flat place such as a table, but a wall-mounting type which is fixed to a vertical wall is not rare.
  • a tray is provided at the lower end of the device case so as to protrude vertically forward with respect to the case, in order to improve the convenience of the user.
  • Such trays need to be cleaned or disinfected on a regular basis, for example, to maintain sanitary conditions.For thorough cleaning or disinfection, remove the tray from the equipment case. It is desirable. However, conventionally, to remove this tray, the device itself must be removed from the vertical wall and the tray must be removed from the device case, and cleaning and disinfecting the tray is troublesome and troublesome. Was difficult.
  • the present invention has been made in view of the above problems, and focuses on the characteristics of the Archimedes spiral curve to convert the rotational motion of a cam plate into a linear motion of a cam driven member that slides on a peripheral edge of the cam plate.
  • a cam device capable of keeping the moving speed of the linear motion constant at the time of injection, and to make the ejection state of the chemical solution uniform and stable during the ejection period by incorporating the cam device.
  • an automatic chemical liquid supply device that can reduce the load on the drive motor and, consequently, reduce the current consumption.
  • an automatic chemical liquid supply device that can easily attach and detach the tray
  • the purpose of the present invention is to provide a tray mounting structure. Disclosure of the invention
  • a cam device includes a cam plate having a predetermined peripheral shape, a rotation center set at a predetermined portion, and a sliding contact with the peripheral portion of the cam plate.
  • a cam driven member having a sliding portion to be obtained, and a peripheral portion of the cam plate provided on the assumption that the driven member performs a linear motion in conjunction with the rotation of the cam plate.
  • Is a two-dimensional polar coordinate display with the rotation center as the origin, and is formed by a spiral curve defined by the equation r a6 (r is radial, ⁇ is declination, and a is a constant) It is characterized by.
  • an automatic chemical solution supply device includes a chemical solution container having a manual pump mechanism, a pump drive mechanism for driving the manual pump mechanism, and electric power for supplying drive power to the pump drive mechanism.
  • the manual pump mechanism is driven by the pump driving mechanism, and an automatic chemical liquid supply device capable of automatically supplying the chemical liquid in the chemical liquid container is assumed.
  • An electric motor connected to the control unit is provided, and a cam plate connected to an output shaft of the electric motor is slidably contactable with a peripheral portion of the cam plate.
  • the manual pump mechanism is configured to have a pushing operation in conjunction with a reciprocating linear operation of a cam driven member accompanying rotation of the cam plate. And a return operation, and a cam plate peripheral portion corresponding to a region including at least a substantially middle to a substantially end point in a pushing stroke of the head portion is formed by the spiral curve. It is characterized by
  • the manual pump mechanism is interlocked with a reciprocating linear operation of a cam driven member accompanying rotation of the cam plate.
  • a head portion for performing a pushing operation and a returning operation, and a rotation angle of the cam plate corresponding to a pushing operation period of the head portion is larger than 180 degrees.
  • the present invention is characterized in that the peripheral shape of the cam plate is set.
  • the automatic chemical liquid supply device according to any one of the second to fourth aspects, wherein the cam driven member performs a vertical linear motion.
  • a fall prevention mechanism for preventing the cam driven member from falling due to its own weight is provided.
  • the tray mounting structure of the automatic chemical liquid supply device includes: a chemical liquid container having a manual pump mechanism; a pump driving mechanism for driving the manual pump mechanism; and a driving mechanism for driving the pump driving mechanism.
  • a power supply unit for supplying electric power, a detection sensor for detecting a user's use operation, and a control unit for controlling the operation of the pump driving mechanism according to an output signal from the detection sensor;
  • the manual pump mechanism is driven by the pump drive mechanism, and the bottom side of the case body of the automatic chemical liquid supply device capable of automatically supplying the chemical liquid in the chemical liquid container.
  • a locking hook having a locking portion projecting vertically is provided, while an intermediate vertical wall having a slot portion through which the locking portion of the locking hook can be inserted is provided on the bottom side of the case body.
  • front and rear vertical walls which are located in front of and in the middle of the middle and are longer in the upper and lower directions than the base of the locking hook, respectively.
  • the locking portion of the locking hook is inserted into the slot portion of the intermediate vertical wall and locked, and the front and rear vertical walls have their ends facing the mounting surface of the tray. It is characterized by having.
  • the tray mounting structure for an automatic chemical liquid supply device is the above-mentioned sixth invention, wherein the predetermined height projecting vertically in the middle of the locking portion of the locking hook is provided. Are provided.
  • the rotational movement of the cam plate is changed to the reciprocating straight line of the cam driven member. It becomes possible to keep the moving speed constant when converting to motion.
  • the moving speed when converting the rotational motion of the cam plate into the reciprocating linear motion of the cam driven member is kept constant, whereby the pushing speed of the head portion is reduced. Is maintained constant, and the discharge state of the chemical solution can be made uniform and stable.
  • the rotation angle of the cam plate corresponding to the pushing operation period of the head portion, which performs the pushing operation and the returning operation in conjunction with the reciprocating linear operation of the cam driven member is larger than 180 degrees. Since the peripheral shape of the cam plate is set so that the same work is performed at a larger rotation angle as compared with a conventional general eccentric circular cam plate, the driving force is applied to the cam plate. The applied motor load and current consumption can be reduced.
  • the cam follower performs a linear motion in the vertical direction, and a fall prevention mechanism for preventing the cam follower from falling due to its own weight when the rotation of the cam plate is stopped.
  • the cam follower does not fall by its own weight even when the rotation of the cam plate is stopped, for example, when replacing the chemical solution container, etc.
  • the mounting surface at the rear portion of the tray has a base extending substantially vertically upward and substantially vertically rearward from the front end side of the base (that is, with respect to the mounting surface). (Approximately parallel to each other). A locking hook having a locking portion that protrudes is provided. When the tray is mounted on the bottom side of the case body, a locking hook provided on the mounting surface of the tray is provided.
  • the stopper is inserted into the slot of the intermediate vertical wall provided on the bottom side of the case body and locked, and the front ends of the front and rear vertical walls on the bottom side of the case body are Since it is opposed to the mounting surface of the tray, the vertical movement of the tray can be reliably restricted, and when removing the tray from the case body, pull the tray forward and lock the locking hook. After the part is removed from the slot of the intermediate vertical wall, the tray can be easily removed by moving the tray downward.
  • the tray can be easily attached to and detached from the case body.
  • the tray can be removed while the case body is fixed to the wall, and the tray can be easily cleaned or disinfected. Become.
  • the seventh invention of the present application basically, the same effects as those of the sixth invention can be obtained.
  • the locking portion since a small convex portion having a predetermined height protruding in the vertical direction is provided in the middle of the locking portion of the locking hook, the locking portion has a slot portion of the intermediate vertical wall. In the state where the locking portion is inserted and locked, it is possible to prevent the locking portion from accidentally falling out of the slot portion.
  • the mounting surface of the tray is elastically displaced in the vertical direction so that the locking portion can be relatively easily pulled out of the slit portion of the intermediate vertical wall, so that the small convex portion is formed. Height is set.
  • FIG. 1 is an overall perspective view of an automatic chemical solution supply device according to an embodiment of the present invention.
  • FIG. 2 is a perspective view showing a state in which a front cover of the automatic chemical liquid supply device is opened.
  • FIG. 3 is an explanatory side view of a chemical solution container used in the automatic chemical solution supply device.
  • FIG. 4 is a block diagram for explaining an outline of the overall configuration of the automatic chemical liquid supply device.
  • FIG. 5 is an explanatory front view showing a main part of a pump driving mechanism of the automatic chemical liquid supply device.
  • FIG. 6 is an explanatory side view of a main part of the pump drive mechanism.
  • FIG. 7 is an explanatory front view of a cam driven member of the pump drive mechanism.
  • FIG. 8 is a plan view of the cam driven member, as viewed in the direction of arrows Y8-Y8 in FIG.
  • FIG. 9 is a side view of the force driven member, as viewed in the direction of the arrows Y9-Y9 in FIG.
  • FIG. 10 is an explanatory front view of a slide guide for guiding the sliding operation of the cam driven member.
  • FIG. 11 is a plan view of the slide guide, as viewed in the direction of the arrow 11 in FIG. 10.
  • FIG. 12 is a side view of the slide guide as viewed in the direction of the arrow Y12-Y12 in FIG.
  • FIG. 13 is an explanatory front view showing a state where the cam follower is assembled to a slide guide.
  • FIG. 14 is an explanatory rear view showing a state where the cam follower is mounted on a slide guide.
  • FIG. 15 is a bottom view showing the assembled state of the cam follower to the slide guide, as viewed in the direction of the arrow Y15-Y15 in FIG.
  • FIG. 16 is an enlarged explanatory view of a portion # 16 in FIG.
  • FIG. 17 is an explanatory front view of a slide guide to which a cam driven member is attached, showing another example of the cam driven member drop prevention mechanism.
  • FIG. 18 is an enlarged explanatory view of a portion # 18 in FIG.
  • FIG. 19 is an explanatory front view of the cam plate according to the present embodiment.
  • FIG. 20 is an explanatory diagram showing a stroke of the linear movement of the cam follower member with respect to the rotation angle of the cam plate.
  • FIG. 21 is a part of a series of explanatory views showing the downward movement fl ⁇ of the cam driven member due to the rotation of the cam plate, and is a front explanatory view at the start of rotation of the cam plate (rotation angle is 0 degrees). .
  • FIG. 22 is a part of a series of explanatory views showing the lowering operation of the cam driven member by the rotation of the cam plate, and is a front explanatory view when the rotation angle of the cam plate is 90 degrees.
  • FIG. 23 is a part of a series of explanatory views showing the lowering operation of the cam driven member by the rotation of the cam plate, and is a front explanatory view when the rotation angle of the cam plate is 180 degrees.
  • Fig. 24 is a series of charts showing the lowering operation of the cam follower due to the rotation of the cam plate.
  • FIG. 7 is a part of an explanatory diagram showing a front view when the rotation angle of the cam plate is 270 degrees.
  • FIG. 25 is a graph showing the operation characteristics of the automatic chemical liquid supply device according to the present embodiment.
  • FIG. 26 is an overall perspective view showing a state in which the automatic chemical liquid supply device according to the present embodiment is equipped with a tray.
  • FIG. 27 is an exploded perspective view of the device case and the tray of the automatic chemical solution supply device.
  • FIG. 28 is an explanatory rear view of the device case.
  • FIG. 29 is a bottom view of the device case, as viewed in the direction of the arrow Y29-Y29 in FIG.
  • FIG. 30 is a cross-sectional view of a main part of the case main body and the tray for explaining the tray mounting operation of the device case to the case main body.
  • FIG. 31 is an explanatory sectional view of a main part showing a state in which the tray is attached to the case main body.
  • FIG. 32 is an explanatory front view of a circular eccentric cam plate according to a conventional example.
  • FIG. 33 is an explanatory view showing a stroke of a linear movement of a cam follower member with respect to a rotation angle of a cam plate according to the conventional example.
  • Fig. 34 is a part of a series of explanatory views showing the lowering operation of the cam follower member due to the rotation of the cam plate according to the conventional example, and the frontal explanation at the start of rotation of the cam plate (rotation angle is 0 degree).
  • FIG. 34 is a part of a series of explanatory views showing the lowering operation of the cam follower member due to the rotation of the cam plate according to the conventional example, and the frontal explanation at the start of rotation of the cam plate (rotation angle is 0 degree).
  • FIG. 35 is a part of a series of explanatory views showing the lowering operation of the cam follower member due to the rotation of the cam plate according to the conventional example, and is a front explanatory view when the rotation angle of the cam plate is 90 degrees.
  • FIG. 36 is a part of a series of explanatory views showing the descending operation of the cam follower member due to the rotation of the cam plate according to the conventional example, and is a front explanatory view when the rotation angle of the cam plate is 180 degrees.
  • FIG. 37 is a part of a series of explanatory views showing a descending operation of a cam driven member due to rotation of a cam plate according to the conventional example, and is a front explanatory view when the rotation angle of the cam plate is 2700 degrees.
  • FIG. 38 is a graph showing the operation characteristics of an automatic chemical liquid supply device according to a comparative example incorporating the above-described conventional cam plate. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is an overall perspective view of an automatic chemical solution supply device according to the present embodiment
  • FIG. 2 is a view [view] showing a state where a front cover of the device is opened.
  • the above-mentioned automatic chemical liquid supply device 1 houses a battery box 2 for storing a dry battery as a power supply and a control unit ⁇ electric motor described later in a substantially rectangular parallelepiped device case 10.
  • a chemical container 20 having a manual pump mechanism is accommodated in a space beside these boxes 2 and 3, and the manual pump mechanism is provided behind the chemical container 20.
  • a pump drive mechanism (to be described later) for driving is provided.
  • the device case 10 is made of, for example, resin and includes a front cover 12 that can be opened and closed with respect to the case body 11 having a predetermined depth. At the top of the front cover 12, a vertically elongated nozzle slot 13 for projecting a discharge nozzle 26 of the chemical solution container 20 to the front of the apparatus, and a detection sensor 32 and an indicator 33 described later are respectively provided on the front of the apparatus. Circular openings 14 and 15 are provided to protrude (see FIG. 2).
  • a substantially transparent front panel 16 is fitted under the slot 13 and the openings 14 and 15, and is housed in the apparatus case 10 through the panel 16.
  • the main body 21 of the chemical solution container 20 can be visually recognized, and the type of the chemical solution currently used can be identified even with the front cover 12 closed.
  • the chemical solution container 20 includes a container body 21 for storing a chemical solution, a sealing cap 22 for sealing an opening of the container body 21, and a chemical solution in the container body 21. And a manual pump mechanism 23 for sucking out and discharging to the outside.
  • the pump mechanism 23 includes a suction pump section 24 fixed to the sealing cap 22 and a press head having a piston pipe 25 p inserted reciprocally with respect to the pump section 24. 25 (pressing operation unit), and a discharge nozzle 26 connected to the pressing head 25 to discharge the sucked chemical solution to the outside.
  • the lower end of the pump unit 24 has a container.
  • a suction pipe 27 inserted into the liquid medicine of the main body 21 is connected.
  • the pressing head 25 is pushed substantially along the axis of the container body 21 (that is, the piston tube 25 p is pushed into the pump section 24), so that each pushing operation is performed. A certain amount of the chemical is discharged from the nozzle 26.
  • the manual pump mechanism 23 has the same configuration as the well-known conventional one and performs the same function, and therefore, further detailed description and illustration are omitted.
  • FIG. 4 is a block diagram for explaining an outline of the configuration of the automatic chemical liquid supply device 1.
  • the automatic chemical solution supply device 1 includes a control unit 30 which is a control circuit board on which various electric components or electronic components are arranged, for example, on a circuit board. Stored in Box 3.
  • the control unit 30 is electrically connected to, for example, four D1 type batteries as a power source 31 housed in the battery box 2. Further, in addition to the detection sensor 32 and the indicator 33 described above, various switches such as a sensor switch 34 and a mode switch 35 are electrically connected to the control unit 30.
  • the detection sensor 32 is, for example, of an infrared type. The detection sensor 32 detects a user's use operation by detecting a human hand Hd or a fingertip using infrared light. It is set to be input to 0.
  • the indicator 33 indicates whether or not the device 1 is normally operable. When the device 1 is normally operable, the indicator 33 indicates, for example, green, and the voltage of the power supply 31 is lower than the set value. When normal operation cannot be performed below, for example, it is lit red to notify You.
  • the sensor switch 34 turns on / off ( ⁇ N / OFF) the operation of the detection sensor 32, and is normally ON. However, when the device is inspected or the chemical solution container 20 is replaced, the sensor switch 34 is turned ON. If the operation of the detection sensor 32 should be stopped, it is switched to the OFF side.
  • the sensor switch 34 is attached to, for example, a side surface of the device case 10.
  • the mode switch 35 is used to select and set the discharge mode of the chemical solution. By switching the mode switch 35, the detection sensor 32 detects the operation of the user once. The user can select how many times the chemical solution should be ejected.
  • control unit 30 further includes a pump driving mechanism 4 for driving the manual pump mechanism 23 of the chemical liquid container 20 to automatically discharge the chemical liquid in the container body 21 from the discharge nozzle 26. 0 is electrically connected.
  • the pump driving mechanism 40 includes an electric motor 41 connected to a power supply 31 via a control unit 30 and driven and controlled according to a control signal from the control unit 30, and an output shaft of the motor 41.
  • the cam device 43 includes a cam plate 44 having a predetermined peripheral shape and a rotation center set at a predetermined position, and a sliding member capable of slidingly contacting the peripheral portion of the cam plate 44.
  • a cam follower member 45 having a contact portion, and the cam follower member 45 performs a linear motion as the cam plate 44 rotates.
  • the cam follower member 45 is positioned such that its top plate 45a comes into contact with the upper end of the pressing head 25 of the pump mechanism 23 of the chemical solution container 20, as indicated by the phantom line in FIG.
  • the pump mechanism 23 is driven by the cam follower member 45 performing a linear motion.
  • the reduction gear unit 43 includes an input gear 43A that engages with the motor gear 41G coupled to the motor output shaft 41s, and an output gear 43 coupled to the rotating shaft 44s of the cam plate 44. 3 C, and an intermediate gear 43 B positioned between the output gear 43 C and the input gear 43 A and interlocking with both gears 43 A and 43 C, and the motor output shaft 41 The rotation of s is reduced at a predetermined reduction ratio and transmitted to the rotating shaft 44 s of the cam plate 44.
  • the rotation shaft 44 s of the cam plate 44 is pivotally supported (rotatably supported) on a base plate 49 via a bearing 48.
  • a projection 44 p is provided on the lower surface of the cam plate 44, for example, a limit switch (not shown) is disposed in the vicinity to measure the rotation angle or the number of rotations of the cam plate 44. I can do it.
  • the cam driven member 45 includes a slide plate 45 b slidably supported by a guide case 46 described below, and an upper end of the slide plate 45 b. And a top plate 45a projecting substantially at right angles to the base plate to form a substantially L-shaped basic shape in side view.
  • the overall shape of the slide plate 45b is rectangular in a front view.
  • a concave portion 45c having a predetermined depth is formed on the back side of the slide plate 45b.
  • the cam plate 44c is formed in the concave portion 45c. Is stored, and the inner surface 45 d of the vertical wall of the concave portion 45 c slides on the peripheral portion of the cam plate 44.
  • the cam follower member 45 is integrally formed of, for example, a synthetic resin.
  • the top plate 45a and the slide plate 45b are composed of a plurality of large and small reinforcing ribs 45e and 45b. They are interconnected by f.
  • the slide guide 46 for supporting the cam driven member 45 so as to be freely slidable up and down has a substantially rectangular shape as a whole.
  • the guide groove part 46b that guides the left and right ends of the slide plate 4 5b so that it can slide freely in the vertical direction, the width corresponding to the top plate 45a, and the depth corresponding to the vertical stroke.
  • a guide case 45a formed with an opening 45c that is open at the top.
  • a step 45d of a predetermined width is installed so as to bridge the lower end of the upper end of the guide case 45a. I'm sick.
  • the slide guide 46 is mounted on the upper surface of the base plate 49 of the pump drive mechanism 40 by using fixing screws (not shown) by the mounting holes 46 f formed in the tabs 46 e at the four corners. 4 4 side).
  • FIGS. 13 and 14 show the state where the cam follower 45 with the cam plate 44 housed in the recess 45 c is assembled to the slide guide 46 from the front side and the rear side, respectively. It is the schematic explanatory drawing shown.
  • the assembled state shown in FIGS. 13 and 14 shows a state where the cam follower member 45 is located at the upper end position of the stroke in the vertical reciprocation.
  • a spring 47 for supporting the cam driven member 45 is interposed between the slide guide 46 and the cam driven member 45.
  • the spring 47 has upper and lower mounting portions 47 b and 4 extending at a predetermined angle from the spring body portion 47 a wound in a coil shape. 7c, and is mounted between the front wall of the guide case 46a of the slide guide 46 and the slide plate 45b of the cam driven member 45.
  • the end of the upper mounting portion 47b is locked in the locking hole 45h of the slide plate 45b, and the end of the lower mounting portion 47c is engaged with the guide case 46a. Locked in the hole 46h.
  • the spring coefficient of the spring 47 can sufficiently support the own weight of the cam driven member 45, and can be used when the cam driven member 45 performs a downward movement by the action of the pump driving mechanism 40. However, it is properly set so as not to apply an excessively large biasing force and hinder its smooth operation.
  • the peripheral shape is a shape obtained by slightly deforming the egg shape, and as shown in FIGS. 13 and 14, the cam driven member 45 is In the state of being located at or near the upper end position of the stroke in the vertical reciprocating motion, the cam plate 44 is not in sliding contact with the upper side of the vertical wall inner surface 45 d of the cam driven member 45.
  • the cam driven member 45 since the spring 47 is provided to support the cam driven member 45, the cam driven member 45 is located at or near the upper end position of the stroke in the vertical reciprocating motion. Even if the chemical solution container 20 is removed from below the top plate 45a of the cam follower member 45 in the state of, the cam follower member 45 is supported by the urging force of the spring 47, It will not fall under its own weight.
  • the top plate 45a is positioned at or near the upper end of the stroke in the vertical reciprocation of the cam follower 45.
  • the new chemical container can be set below the top plate 45a without touching the top plate 45a. That is, the replacement work is simple and can be performed hygienically.
  • FIG. 17 and FIG. 18 show another example of the fall prevention mechanism of the cam driven member.
  • a locking hook 5 that can be elastically displaced in the width direction of the opening 56 c (the left-right direction in FIGS. 17 and 18) is provided at the upper opening end of the opening 56 c of the slide guide 56.
  • 6 k is provided in a body, and a hook portion 56 m having a substantially triangular shape in a front view is formed at the tip side of the locking hook 56 k.
  • the left and right outer ribs 55 e of the cam follower 55 are set such that the lower end 55 k can engage with the tip hook 56 m of the locking hook 56 k.
  • the cam follower 55 is lowered by the rotation of the cam plate 44.
  • the lower end 55 k of the rib 55 e descends along the upper tapered surface 56 t of the tip hook 56 m of the locking hook 56 k and cantilever at the upper end.
  • the supported locking hook 56 k is elastically displaced so that the tip hook 56 m moves outward, so that the cam follower 55 can be lowered without any trouble.
  • the cam driven member 55 and the slide guide 56 have the same configuration as those of the above-described members 45 and 46 except for the mechanism for preventing the cam driven member from falling.
  • the automatic chemical liquid supply device 1 having the above configuration is operable as usual (the indicators 33 and 33 are displayed in green), and the user extends his hand below the discharge nozzle 26 to use the device 1 ( In FIG. 2, the detection sensor 32 detects this use operation and outputs a detection signal to the control unit 30.
  • the electric motor 41 of the pump drive mechanism 40 is driven based on the detection signal, and the rotational force is transmitted to the cam device 43 via the reduction gear unit 42 to rotate the force plate 44.
  • the rotational movement of the cam plate 44 is converted into a linear movement of the cam follower member 45, and the cam follower member 45 presses the pressing head 25 of the pump mechanism 23 of the chemical solution container 20 (pressing operation).
  • a certain amount of the chemical is discharged from the discharge nozzle 26 toward the user's hand.
  • the cam driven member 45 pushes the pressing head 25 of the pump mechanism 23
  • the cam is driven so that the pushing speed is as constant as possible during the pushing stroke.
  • the peripheral shape of the plate 4 4 is set.
  • FIG. 19 is an explanatory front view of the cam plate 44.
  • the cam plate 44 according to the present embodiment has a peripheral shape obtained by slightly deforming the oval shape, and is centered on the axis of the rotating shaft 44 s (rotation center C s). It is driven to rotate in the direction of the arrow (clockwise in FIG. 19).
  • FIGS. 21 to 24 show the state of sliding contact between the periphery of the cam plate 44 and the inner surface 45 d of the vertical wall of the cam driven member 45 along with the rotation of the cam plate 44, and the cam driven portion.
  • FIG. 20 shows a change in the amount of lowering L of the cam follower member 45 with respect to the rotation angle as the cam plate 44 rotates.
  • FIG. 20 and FIG. 33 to be described later show the operating characteristics when the cam device is driven with no load (that is, not when the pump mechanism of the chemical solution container is driven by being incorporated in the automatic chemical solution supply device).
  • a predetermined portion of the curve defining the peripheral shape of the cam plate 44 (specifically, a portion in the range from the point P1 to the point P3) SA is the cam plate 4
  • a two-dimensional polar coordinate display with the rotation center C s as the origin, and a spiral curve defined by the equation r a ⁇ (r is a radial, ⁇ is a declination, a is a constant) (so-called Archimedes spiral curve) It is formed with.
  • the range up to) is applied as a curve defining the peripheral shape of the cam plate 44.
  • a portion other than the portion SA defined by the Archimedes spiral curve that is, from the point P3 to the point P1 including the point Po.
  • the curves having different radii of curvature were formed by connecting several curves 4 smoothly.
  • a predetermined portion specifically, a portion in a range from the point P1 to the point P3 of the curve defining the peripheral shape is obtained by setting the rotation center C s of the cam plate 44 to the origin.
  • a cam plate 44 formed by an Archimedes spiral curve was set.
  • the descending speed of the cam follower 45 can be made constant over a stroke range corresponding to the predetermined portion SA defined by the Archimedes spiral curve in the peripheral portion of the cam plate 44.
  • the operation speed at the time of operating the manual pump mechanism 23 of the chemical liquid container 20 via 45 can be kept constant, and the discharge state of the chemical liquid can be made uniform and stable.
  • the moving speed at the time of converting the rotational movement of the cam plate 44 into the reciprocating linear movement of the cam follower member 45 is made constant, whereby By keeping the pressing speed of the head 25 constant, the discharge state of the chemical solution can be made uniform and stable.
  • the rotation angle ⁇ of the cam plate 44 corresponding to the pressing operation period of the pressing head 25 is 264.5 degrees, and 1 It is larger than 80 degrees.
  • the time loss can be reduced accordingly.
  • FIGS. 32 to 38 show the operating characteristics of a circular eccentric cam plate 144 as a comparative example and an automatic chemical liquid supply device incorporating the same.
  • the peripheral shape of the cam plate 144 is a simple circle, and the axis C s ′ (center of rotation) of the rotating shaft 144 s is offset from the center of the circle. (Eccentric).
  • FIGS. 34 to 37 show the state of sliding contact between the peripheral edge of the cam plate 144 and the inner surface of the vertical wall 144 of the force driven member 144 along with the rotation of the cam plate 144.
  • the cam driven member 144 and the slide guide 144 in this comparative example have exactly the same configuration as the cam driven member 45 and the slide guide 46 according to the present embodiment, and have the same operation. What to do.
  • the motor is stopped because the peripheral edge of the cam plate 144 is always in sliding contact with the inner surface 144 d of the vertical wall of the cam driven member 144.
  • the cam driven member 144 is directly supported by the cam plate 144. Therefore, the above-described fall prevention mechanism is not required.
  • Example of the present invention 5.854 [V] / Comparative example: 5.627 [V]
  • Example of the present invention 0.543 [A] Z Comparative example: 0.705 [A]
  • Example of the present invention 2.504 [kgf]
  • Comparative example 2.408 [kgf]
  • Example of the present invention 0.78 [second] Comparative example: 0.90 [second]
  • the current consumption is smaller and the battery life is longer than in the comparative example.
  • the pressing stroke time of the pressing head 25 is shortened. Since the stroke length is the same, in other words, the pushing speed increases.
  • the chemical liquid is discharged in a spray state (a so-called spray pump) or when stones or the like are discharged in a foam state (a so-called forming pump)
  • the pushing speed is low, good discharge is achieved. In some cases, a state cannot be obtained. In the examples, it has been found that a sufficient pushing speed can be secured.
  • the above-mentioned automatic chemical solution supply device 1 can be used as a table mounting type device by mounting it on a flat place such as a table in the state shown in FIG. 1, but as shown in FIG.
  • a tray 70 projecting substantially vertically forward from the case body 11 can be attached to the lower side of the case 10.
  • a plurality of mounting holes 11 k are provided on the back surface of the case body 10 of the device case 10, and the device case 10 is mounted on a wall. It can be mounted and used as a wall-mounted device. In the case of this wall-mounted type, the tray 70 is mounted as a standard in order to enhance user convenience.
  • the tray 70 is more preferably made of resin, and has a concave receiving portion 71 at its front portion, as can be clearly seen from FIGS. 26 and 27, and has a tray 7 at its rear portion.
  • a mounting portion 72 is formed for mounting 0 on the bottom side of the case body 11 of the device case 10.
  • a pair of guide pieces 73 is provided substantially at the center of the left and right side edges of the upper surface (mounting surface) 72 a of the mounting portion 72.
  • a locking hook 4 extending in the width direction is formed at a predetermined location in the front-rear direction of the mounting surface 72a.
  • the locking hook 74 includes a base 74 a extending substantially vertically upward, and substantially vertically extending from the tip side of the base 74 a (that is, the mounting surface). It is formed substantially in an L-shape with the locking portion 74 b protruding. More preferably, a small convex portion 74c having a predetermined height and projecting downward is provided at an appropriate position in the middle of the locking portion 74b.
  • the left and right vertical walls 61 and the front and rear vertical walls 6 2 and 6 3 are provided on the bottom side of the case body 11 of the device case 10.
  • a tray attaching / detaching portion 60 having an intermediate vertical wall 64 extending in the left-right direction is provided.
  • Each of the vertical walls 61, 62, 63, and 64 is formed to extend substantially vertically downward from the bottom surface 11 b of the case body 11.
  • the intermediate vertical wall 6 4 is located between the front vertical wall 6 2 and the rear vertical wall 6 3. It is arranged at the position corresponding to the locking hook 74.
  • a slot portion 64 h through which the locking portion 74 b of the locking hook 74 can pass is formed in the intermediate vertical wall 64.
  • the rear vertical wall 63 is also provided with a slot portion 63 h for die cutting.
  • the vertical length of the front and rear vertical walls 62 and 63 is set to be longer than the height of the base 74a of the locking hook 74, and the tray mounting state shown in FIG. 31 is set. In this state, the movement and rotation of the tray 70 in the vertical direction are reliably restricted.
  • the mounting surface 72a is slightly upwardly elastic by lifting the locking hook 74.
  • the insertion operation is performed with the displacement.
  • the locking portion 74b is urged downward by the elastic force of the mounting surface 72a after passing through the slot portion 64h, and Even if force is applied in the direction, it will not accidentally fall out of the slot 6 4 h.
  • a small convex portion 74c having a predetermined height protruding downward is provided in the middle of the locking portion 74b of the locking hook 74, and the locking portion 74b is a slot portion.
  • the small convex portion 74c is locked to the intermediate vertical wall 64 at the rear end side of the slot portion 64h while being locked through the hole 64h. This ensures that b does not accidentally fall out of the slot 64 h.
  • the mounting surface 70 a of the tray 70 is elastically displaced upward so as to lift the locking hook 74 when removing the tray 70 from the case body 11.
  • the above-mentioned locking portion 7 4 b is relatively easily removed from the slot portion 6 4 h of the intermediate vertical wall 64. It is set appropriately so that you can escape.
  • the tray 70 can be easily removed from the tray attaching / detaching portion 60 of the case body 11 by pulling out the locking portion 74b from the slot portion 64h in this manner.
  • the tray 70 can be easily attached to and detached from the case main body 11 of the device case 10.
  • the automatic chemical solution supply device 1 can be a wall-mounted type. Even when used, the tray 70 can be removed while the case body 11 is fixed to the wall, so that the tray 70 can be easily cleaned or disinfected.
  • the present embodiment relates to a case where a cam device having a cam plate in which a part of a curve defining a peripheral shape is formed by an Archimedes spiral curve is used by being incorporated in an automatic chemical liquid supply device.
  • a cam device having a cam plate in which a part of a curve defining a peripheral shape is formed by an Archimedes spiral curve is used by being incorporated in an automatic chemical liquid supply device.
  • the above-described cam device is not limited to such a case, and may be applied to other devices and devices where it is desired to convert at least a part of the rotational motion of the cam plate into linear motion at a constant speed. You can do it.
  • the rotational speed of the cam plate when converting the rotational movement of the cam plate into the linear movement operation of the force driven member can be kept constant. It is effective to make the discharge state of the chemical liquid uniform and stable by incorporating it into an automatic chemical liquid supply device that operates the manual pump mechanism of the chemical liquid container via a member. Further, in the automatic chemical liquid supply device of the present invention, the operating speed at the time of operating the manual pump mechanism of the chemical liquid container via the cam driven member is kept constant, and the discharge state of the chemical liquid is made uniform and stable.
  • the automatic chemical liquid supply device has a The tray mounting structure allows the tray to be easily attached to and detached from the case body.For example, in the case of a wall-mounted automatic chemical solution supply device, the tray can be removed while the case body is fixed to the wall, and the tray can be cleaned or disinfected. This is effective in making it easy to perform

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention porte sur un dispositif d'amenée automatique de produit chimique qui achemine automatiquement un produit chimique contenu dans un réceptacle au moyen d'un mécanisme de pompe manuel par détection de l'actionnement de l'utilisateur au moyen d'un capteur afin de mettre en marche un mécanisme de commande de pompe. Ce mécanisme de commande de pompe comporte une came disque entraînée par un moteur et un élément suiveur de came effectuant un mouvement linéaire de va-et-vient conjointement avec le mouvement rotatif de la came disque. Une partie déterminée au niveau du bord périphérique de la came disque se présente sous forme d'une courbe en spirale définie par l'équation τ = aυ (τ étant le vecteur du rayon, υ la déclinaison et a une constante) dans des coordonnées polaires bidimensionnelles dont l'origine se situe au niveau du centre rotatif de la came disque. Il est ainsi possible d'assembler ce type de dispositif capable de maintenir à une contante la vitesse du déplacement linéaire lorsque le mouvement rotatif est converti en mouvement linéaire, et de réguler et stabiliser l'état de distribution du produit chimique au cours d'une période de distribution.
PCT/JP2000/006125 1999-11-30 2000-09-08 Came, dispositif d'amenee automatique de produit chimique par la came et structure de fixation de plateau du dispositif d'amenee de produit chimique WO2001040648A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP33970699A JP2001153036A (ja) 1999-11-30 1999-11-30 カム装置および該カム装置を備えた自動薬液供給装置並びに自動薬液供給装置のトレイ取付構造
JP11/339706 1999-11-30

Publications (1)

Publication Number Publication Date
WO2001040648A1 true WO2001040648A1 (fr) 2001-06-07

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PCT/JP2000/006125 WO2001040648A1 (fr) 1999-11-30 2000-09-08 Came, dispositif d'amenee automatique de produit chimique par la came et structure de fixation de plateau du dispositif d'amenee de produit chimique

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JP (1) JP2001153036A (fr)
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Cited By (2)

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Publication number Priority date Publication date Assignee Title
KR20030046751A (ko) * 2001-12-06 2003-06-18 삼성전자주식회사 텔레텍스트 수신용 텔레비전
FR2868343A1 (fr) * 2004-04-01 2005-10-07 Pixxent Soc Par Actions Simpli Systeme de pulverisation a commande automatique

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JP5220138B2 (ja) * 2011-01-13 2013-06-26 正樹 伊藤 自動液吐出装置
JP2017001722A (ja) * 2015-06-12 2017-01-05 日本電産サンキョー株式会社 液体供給装置
US20180014878A1 (en) * 2016-07-13 2018-01-18 Biosense Webster (Israel) Ltd. Diaphragm pumps for medical applications
JP6977493B2 (ja) * 2017-11-13 2021-12-08 サンスター株式会社 液体の口腔用組成物供給装置
JP6856044B2 (ja) * 2018-03-26 2021-04-07 横浜ゴム株式会社 航空機用化粧室ユニットの石鹸水自動供給機構
JP7217995B2 (ja) * 2020-09-30 2023-02-06 株式会社サンセイアールアンドディ 遊技機
JP2022077630A (ja) * 2020-11-12 2022-05-24 昭 田中 非接触式操作装置
CN112610674A (zh) * 2020-12-01 2021-04-06 广州市昊志机电股份有限公司 一种凸轮式波发生器和谐波减速器

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JPH05172053A (ja) * 1990-05-15 1993-07-09 L'oreal Sa 圧縮装置
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JPH05172053A (ja) * 1990-05-15 1993-07-09 L'oreal Sa 圧縮装置
JPH04171287A (ja) * 1990-11-02 1992-06-18 Carex Syst Inc 電子制御された流体ディスペンサー
JP3010836U (ja) * 1994-11-02 1995-05-09 株式会社フタバ化学 載置台付き液体収納容器
JPH0914129A (ja) * 1995-06-30 1997-01-14 Yoshida Seiyaku Kk 自動液体吐出補助装置
JPH09268530A (ja) * 1996-03-27 1997-10-14 Sefutetsuku Kk 道路用標識具

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030046751A (ko) * 2001-12-06 2003-06-18 삼성전자주식회사 텔레텍스트 수신용 텔레비전
FR2868343A1 (fr) * 2004-04-01 2005-10-07 Pixxent Soc Par Actions Simpli Systeme de pulverisation a commande automatique

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TW475030B (en) 2002-02-01

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