JP6129129B2 - Dispenser drive - Google Patents

Description

  The present invention relates to a dispenser drive device capable of discharging a predetermined amount of liquid such as a disinfectant, and in particular, a dispenser drive device that automatically discharges a suitable amount of liquid by pressing a movable nozzle with the driving force of an electric motor. It is about.

  In hospitals and clinics, dispensers composed of containers with movable caps that can discharge a predetermined amount of disinfectant are widely used. This dispenser discharges the disinfecting liquid in the container in a fixed amount by pressing the movable cap. From the viewpoint of hygiene, the operation of this type of dispenser is often performed in a stepping manner. That is, the dispenser is attached to the holder, the pedal and the arm are connected by a connecting rod made of a wire or a rod, and the arm is operated by operating the pedal, and the movable cap of the dispenser is pressed by the arm.

  Considering that this type of dispenser is often handled by hospital personnel in hospital operating rooms, etc., further improvements are made in terms of preventing contamination of the container, stability of the container, and attachment / detachment of the connecting rod to the pedal. It will be necessary. Under such circumstances, there has been proposed a support operation device for a disinfectant dispenser that has greatly improved hygiene and usability when actually used.

  As shown in FIG. 11, the support operating device 50 for the disinfectant dispenser includes a container 51a with a movable cap 51b that can discharge a predetermined amount of disinfectant from a nozzle 51c by operating a foot pedal (not shown). An apparatus for supporting and operating a dispenser 51 comprising a housing 52 comprising a front surface 52a, both side surfaces 52b, 52b, a back surface 52c, a top surface 52d and a bottom surface 52e. From the lower part, a movable cap pressing member 53 that can be moved up and down in an inverted L-shape when viewed from the side so as to project forward in the housing 52, and for holding the container that supports the neck of the container 51a containing the disinfectant A member mounting member 55 and a container mounting member 55 for mounting the disinfectant-containing container 51a are provided.

  A wire insertion space is provided on the back surface 52 c side in the housing 52, the upper end side of the wire 56 is supported on the lower end side of the movable cap pressing member 53, and the nozzle of the dispenser 51 is provided on the front surface 52 a of the housing 52. A window for projecting 51c and a viewing window 57 for checking the remaining amount of the disinfectant in the container 51a are provided.

  Thus, the entire dispenser 51 is surrounded by the housing 52, the container 51a is also stably supported, and the engagement of the wire 56 with the foot pedal can be made very easy. Both the stability and the detachability of the wire 56 with respect to the foot pedal are markedly improved compared to conventional products of the same type, and the appearance is simple and clean, suitable for the usage environment. (For example, refer to Patent Document 1).

Japanese Utility Model Publication No. 7-20973

  In such a conventional dispenser 51, since it is a foot pedal type, it is difficult to press the movable cap with a certain stroke and pressing force. For this reason, there is a limit to discharging a certain amount of liquid, and when discharging the liquid in the form of foam or mist, the particles may vary, ensuring a stable foam or mist discharge state. There was a risk that the surrounding environment could be contaminated by scattered particles.

  The present invention has been made in view of such a conventional problem, and an object thereof is to provide an environment-friendly dispenser driving device capable of stably discharging a predetermined amount of liquid.

  In order to achieve such an object, the invention according to claim 1 of the present invention includes a base having a mounting table on which a dispenser is mounted, an electric motor attached to the base, and a motor shaft of the electric motor. A speed reduction mechanism coupled to the drive shaft, a drive shaft to which the rotational motion of the electric motor is transmitted via the speed reduction mechanism, and a presser lever mounted on the drive shaft and supported so as to be axially movable and non-rotatable A motion conversion mechanism that is fitted and fixed to the presser lever and has a cylindrical support ring that is extrapolated to the drive shaft, and that converts the rotational motion of the drive shaft into a linear motion of the presser lever, and the drive A support mechanism that rotatably supports the shaft, and the support mechanism is fixed to the base and is disposed opposite to both ends of the drive shaft, and between the support plates The distance between both support plates is kept constant. That is composed of at least three posts, the pressing lever by a predetermined amount lowered abuts against the movable cap of the dispenser, a certain amount of liquid is discharged.

  Thus, a base having a mounting table for mounting the dispenser, an electric motor attached to the base, a speed reduction mechanism connected to the motor shaft of the electric motor, and the electric motor via the speed reduction mechanism A drive shaft to which the rotational motion of the shaft is transmitted, a presser lever which is mounted on the drive shaft and supported in an axially movable and non-rotatable manner, and is fitted and fixed to the presser lever, and is extrapolated to the drive shaft A cylindrical support ring, and a motion conversion mechanism that converts the rotational motion of the drive shaft into a linear motion of the presser lever, and a support mechanism that is fixed to the base and supports the drive shaft. And a pair of support plates fixed to both ends of the drive shaft, and at least three support columns which are erected between the support plates and maintain a constant distance between the support plates, and the presser lever has a predetermined amount Move down and hit the movable cap of the dispenser Since a certain amount of liquid is discharged, the deformation of the drive shaft due to the meshing accuracy of the gear of the speed reduction mechanism is suppressed, and the inclination and twisting of the support ring extrapolated to the drive shaft are prevented. Thus, it is possible to provide an environment-friendly dispenser driving device that can stably discharge a certain amount of liquid without polluting the surrounding environment with scattered particles.

  Preferably, as in the invention described in claim 2, a small-diameter portion is formed at both ends of the drive shaft, and the small-diameter portion has a predetermined radial clearance on the inner diameter of a cylindrical receiving member attached to the support plate. And a ball is disposed on the end surface of the small diameter portion, and a pivot bearing is constituted by an adjustment screw screwed to the receiving member, and the drive shaft is rotatable with respect to the receiving member. If supported, the mechanical loss can be reduced and the axial position of the ball can be adjusted by advancing and retracting the adjusting screw, and the axial clearance of the drive shaft with respect to the support plate can be easily adjusted. it can.

  According to a third aspect of the present invention, the pressing lever is formed in a plate-like rectangular shape, and is formed at one end in the longitudinal direction at a pressing portion that contacts the movable cap of the dispenser and at the other end. A bifurcated locking portion and a fixing portion to which the support ring is fitted and fixed, and both ends of the plurality of columns are supported between the columns on the locking portion side of the presser lever. If a guide shaft fixed to the plate is provided, and the locking portion of the presser lever is slidably engaged with the guide shaft, a change in the distance between the drive shaft and the guide shaft can be allowed. Therefore, it is possible to prevent the presser lever from rotating with the rotational movement of the drive shaft, and it is possible to prevent the support ring from tilting or twisting, and to discharge the dispenser liquid accurately and stably.

  According to a fourth aspect of the present invention, the motion conversion mechanism includes the drive shaft and a support ring, and a helical thread groove is formed on an outer periphery of the drive shaft and is engaged with the thread groove. If the ball or pin to be mounted is mounted on the support ring, the frictional resistance is extremely low, and a more efficient motion conversion mechanism can be provided, the power loss is small, the electric motor is downsized and the power consumption is reduced. Reduction can be achieved, and the life of the dry battery can be extended.

  A dispenser driving device according to the present invention includes a base having a mounting table on which a dispenser is placed, an electric motor attached to the base, a speed reduction mechanism connected to a motor shaft of the electric motor, and the speed reduction mechanism. A drive shaft to which the rotational motion of the electric motor is transmitted via, a presser lever mounted on the drive shaft and supported so as to be axially movable and non-rotatable, and fitted and fixed to the presser lever, A cylindrical support ring extrapolated to the drive shaft, a motion conversion mechanism for converting the rotational motion of the drive shaft into a linear motion of a presser lever, and a support mechanism for rotatably supporting the drive shaft; A pair of support plates fixed to the base and disposed opposite to both ends of the drive shaft, and a space between the support plates. At least 3 branches The presser lever is lowered by a predetermined amount to abut against the movable cap of the dispenser, and a fixed amount of liquid is discharged. Suppresses deformation, prevents tilting and twisting with the support ring extrapolated to the drive shaft, and stably discharges a certain amount of liquid without polluting the surrounding environment with scattered particles An environmentally friendly dispenser drive can be provided.

It is a front view which shows one Embodiment of the dispenser drive device which concerns on this invention. It is an expansion | deployment schematic diagram of the dispenser drive device of FIG. It is principal part sectional drawing which shows the motion conversion mechanism of FIG. (A) is principal part sectional drawing which shows the modification of the motion conversion mechanism of FIG. 1, (b) is principal part sectional drawing which shows the modification of (a). It is a top view which shows the support mechanism of FIG. (A) is sectional drawing which followed the VI-VI line of FIG. 5, (b) is principal part sectional drawing of (a). It is a disassembled perspective view which shows the presser lever of FIG. It is a front view which shows the dispenser installed in the dispenser drive device which concerns on this invention. It is explanatory drawing which shows the state before the drive of the dispenser drive device which concerns on this invention. It is explanatory drawing which shows the state after the drive of the dispenser drive device which concerns on this invention. It is a longitudinal cross-sectional view which shows the support operation apparatus for the conventional disinfection liquid dispensers.

  A base having a mounting base for mounting the dispenser, an electric motor attached to the base, a speed reduction mechanism connected to a motor shaft of the electric motor, and a rotational motion of the electric motor via the speed reduction mechanism Is transmitted to the drive shaft, a presser lever mounted on the drive shaft and supported so as to be axially movable and non-rotatable, and a cylinder fitted and fixed to the presser lever and extrapolated to the drive shaft. A motion conversion mechanism that converts the rotational motion of the drive shaft into a linear motion of a presser lever, and a support mechanism that rotatably supports the drive shaft, the support mechanism comprising: A pair of support plates fixed to the base and disposed opposite to both ends of the drive shaft, and four support columns standing between the support plates and maintaining a constant spacing between the support plates A small diameter part is formed at both ends of the drive shaft The small-diameter portion is inserted into the inner diameter of a cylindrical receiving member mounted on the support plate via a predetermined radial clearance, and a ball is disposed on the end surface of the small-diameter portion, and is screwed to the receiving member. A pivot bearing is constituted by the adjusted screw so that the drive shaft is rotatably supported with respect to the receiving member, and the presser lever is lowered by a predetermined amount to abut against the movable cap of the dispenser, and is fixed. An amount of liquid was discharged.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view showing an embodiment of a dispenser driving device according to the present invention, FIG. 2 is a developed schematic view of the dispenser driving device of FIG. 1, and FIG. 3 is a cross-sectional view of a main part showing a motion conversion mechanism of FIG. 4A is a cross-sectional view of a main part showing a modification of the motion conversion mechanism of FIG. 1, FIG. 4B is a cross-sectional view of a main part showing a modification of FIG. 1A, and FIG. FIG. 6A is a cross-sectional view taken along line VI-VI in FIG. 5, FIG. 6B is a cross-sectional view of the main part of FIG. FIG. 8 is a front view showing a dispenser installed in the dispenser driving device according to the present invention, and FIG. 9 is an explanatory diagram showing a state before driving the dispenser driving device according to the present invention. FIG. 10 is an explanatory diagram showing a state after driving of the dispenser driving device according to the present invention.

  A dispenser driving device 1 shown in FIG. 1 includes a base 2, an electric motor 3 attached to the base 2, a speed reduction mechanism 4 connected to a motor shaft 3a of the electric motor 3, and a speed reduction mechanism 4. A drive shaft 5 through which the rotational motion of the electric motor 3 is transmitted, a motion conversion mechanism 7 for converting the rotational motion of the drive shaft 5 into a linear motion of the presser lever 6, and a support for rotatably supporting the drive shaft 5 And a mechanism 8.

  The base 2 includes a standing plate 2a and a mounting table 2b that protrudes perpendicularly from the standing plate 2a, to which the electric motor 3 and the support mechanism 8 are fixed, and on which a later-described dispenser 33 is placed.

  The electric motor 3 is a movable and inexpensive direct current motor that uses a dry battery or the like as a power source, and is kept constant at a minimum voltage at which the motor terminal voltage can be driven from the initial stage by a power regulator. As a result, a constant speed motion can be realized even for voltage fluctuations over a wide range from an initial high voltage to a low voltage capable of linear motion. Further, the voltage applied to the motor terminal is always constant by the power supply regulator, and extra power consumption is not used even when the voltage is high, so that the dry battery life can be extended.

  As shown in FIG. 2, the speed reduction mechanism 4 includes a motor shaft 3a of the electric motor 3 and an intermediate shaft 9 arranged in parallel with the motor shaft 3a. An input gear comprising a spur gear is provided at the end of the motor shaft 3a. 10 is attached, and an output gear 11 is attached to the drive shaft 5. An intermediate gear 12 that meshes with the input gear 10 and an intermediate gear 13 that meshes with the output gear 11 are attached to the intermediate shaft 9. These input gear 10, output gear 11 and intermediate gears 12, 13 reduce the rotation of the electric motor 3 to a desired reduction ratio. Note that a DC geared motor in which the electric motor 3 and the speed reduction mechanism 4 are integrated may be used without using the speed reduction mechanism 4.

  The motion conversion mechanism 7 includes a drive shaft 5 disposed in parallel with the electric motor 3 and a presser lever, which will be described later, which is fitted on the outer peripheral surface of the drive shaft 5 and is supported so as to be axially movable and non-rotatable. 6 and a cylindrical support ring 14 fitted and fixed to the presser lever 6.

  As shown in FIG. 3, a spiral thread groove 5 a is formed on the outer periphery of the drive shaft 5. On the other hand, the support ring 14 inserted into the drive shaft 5 is formed with a perforation 14a penetrating from the inner peripheral surface to the outer peripheral surface, and a pin 17 is fitted into the perforation 14a. The pin 17 is engaged with the spiral thread groove 5 a of the drive shaft 5. The thread groove 5a is formed in an arc surface having a predetermined radius of curvature, and the tip 17a of the pin 17 is formed in a convex spherical surface having a radius of curvature slightly smaller than the radius of curvature of the arc surface of the screw groove 5a. Yes. Thereby, the contact with the screw groove 5a becomes a contact between the smooth arc surfaces, and as the drive shaft 5 rotates, the pin 17 engaged with the screw groove 5a moves along the screw groove 5a. Is converted into a linear motion in the axial direction of the support ring 14. By adopting such a motion conversion mechanism 7, it is possible to provide a more efficient motion conversion mechanism 7 having a very low frictional resistance, a small power loss, and a reduction in size and power consumption of the electric motor 3. Reduction can be achieved, and the life of the dry battery can be extended.

  In addition, by appropriately changing the lead and lead angle of the thread groove 5a of the drive shaft 5 and the gear reduction ratio of the speed reduction mechanism 4, the movement thrust and movement speed of the presser lever 6 described later can be set to desired set values. it can.

  FIG. 4A shows a modification of the motion conversion mechanism 7 described above. The motion conversion mechanism 18 includes a drive shaft 5 and a cylindrical support ring 19 that is fitted and fixed to the outer peripheral surface of the drive shaft 5 and is fitted and fixed to the presser lever 6. A shaped screw groove 5a is formed. On the other hand, the support ring 19 inserted into the drive shaft 5 is formed with a perforation 14a penetrating from the inner peripheral surface to the outer peripheral surface. A ball 20 and a pin 21 for preventing the ball 20 from coming off are formed in the perforation 14a. The ball 20 is mounted so as to roll freely. The ball 20 is engaged with the spiral thread groove 5 a of the drive shaft 5. As a result, the contact with the screw groove 5a is a smooth contact between the circular arc surfaces as in the above-described embodiment, and the ball 20 itself rolls along the screw groove 5a, and the rolling resistance is less resistance than the slip resistance. Thus, the rotational motion of the drive shaft 5 can be converted into a smooth linear motion of the support ring 19.

  Moreover, as shown in (b), a recess 22 may be formed in the inner peripheral surface of the support ring 19, and the ball 20 may be housed in the recess 22 so as to roll freely. Here, the recess 22 is formed in a concave spherical surface having a radius of curvature slightly larger than the radius of the ball 20, and the radius of the ball 20 is set slightly smaller than the radius of curvature of the screw groove 5 a of the drive shaft 5. ing. As a result, the contact with the screw groove 5a becomes easier to roll along the screw groove 5a, and the smooth movement of the support ring 19 is provided, as in the embodiment (b) described above. it can.

  As shown in FIG. 5 and FIG. 6A, the support mechanism 8 is fixed to a base (not shown) and a pair of rectangular support plates 23 and 24 disposed opposite to both ends of the drive shaft 5. And at least three (four in this case) support columns 25 that stand upright at the corners of the support plates 23 and 24 and keep the distance between the support plates 23 and 24 constant.

  Further, in addition to the support column 25 described above, a guide shaft 26 is fixed to the support plates 23 and 24 between the support columns 25 and 25. Specifically, the guide shaft 26 is formed of a round bar, and is erected at a substantially central portion between the support columns 25 and 25 on the side of the locking portion 6 b of the presser lever 6 among the plurality of support columns 25, and both end portions are supported by the support plate 23. , 24 are press-fitted and fixed.

  The drive shaft 5 is rotatably supported by a cylindrical receiving member 27 mounted on the support plates 23 and 24. Specifically, as shown in FIG. 6B, a small-diameter portion 28 is formed at both ends of the drive shaft 5, and a through hole 27a is formed in the receiving member 27. The drive shaft 5 is formed in the through hole 27a. Is inserted through a predetermined radial (radial) clearance. A ball 29 is disposed on the end face of the small diameter portion 28 to form a so-called pivot bearing, and an adjustment screw 15 is screwed into the through hole 27 a for adjusting the position of the ball 29. By moving the adjustment screw 15 back and forth, the axial position of the ball 29 can be adjusted, and the axial clearance of the drive shaft 5 with respect to the support plates 23 and 24 can be adjusted. The adjustment screw 15 only needs to be attached to at least one receiving member 27 of the pair of upper and lower receiving members 27.

  In the present embodiment, a lubricating grease is filled in a space formed between the receiving member 27 and the small diameter portion 28 of the drive shaft 5, and a radial (radial direction) load generated on the drive shaft 5 is applied to the receiving member 27. While being loaded by a sliding bearing constituted by the through hole 27a and the small diameter portion 28, a thrust (axial direction) load generated in the drive shaft 5 is loaded by the pivot bearing described above.

  In this way, the rotational motion from the electric motor 3 is transmitted to the drive shaft 5, and this rotational motion is a motion conversion in which the support ring 14 fitted and fixed to the presser lever 6 engages with the thread groove 5 a of the drive shaft 5. The mechanism 7 converts the linear motion of the presser lever 6, and the thrust of this linear motion varies mainly depending on the lead angle of the drive shaft 5. In this case, the axial thrust is determined by the twist direction of the screw groove 5 a of the drive shaft 5 and the rotational direction of the drive shaft 5, but a thrust load corresponding to this load is applied to the drive shaft 5.

  In the present embodiment, since the pivot bearing using the ball 29 is employed as the bearing for applying the thrust load, the point contact reduces the friction, and the mechanical loss can be reduced, and the four support plates 23 and 24 are provided. Since both ends of the drive shaft 5 are fixed to the support plates 23 and 24, deformation of the drive shaft 5 due to gear meshing accuracy and the like is suppressed, and the drive shaft 5 is extrapolated. An environment-friendly dispenser drive device that can prevent tilting and twisting with respect to the support ring 14 that has been made, and can stably discharge a certain amount of liquid without polluting the surrounding environment with scattered particles. Can be provided.

  Further, due to the linear movement of the presser lever 6, contact surface pressure is applied to the screw groove 5a of the drive shaft 5 and the pin 17 or the ball 20 of the presser lever 6 engaged with the screw groove 5a. However, if there is an axial clearance (play) on the drive shaft 5, the presser lever 6 moves up and down and cannot move stably. In the present embodiment, the adjustment of the position of the drive shaft 5 in the axial direction, that is, the adjustment of the clearance of the ball 29 of the pivot bearing, can be easily performed by the adjusting screw 15 screwed to the member 27. Therefore, since the lead of the screw groove 5a of the drive shaft 5 can be changed with respect to the load variation within the movement range of the presser lever 6, the thrust adjustment by the lead of the screw groove 5a can be easily performed.

  As shown in FIGS. 5 and 7, the presser lever 6 is formed in a plate-like rectangular shape, and is formed at one end in the longitudinal direction at a pressing portion 6a that abuts a movable cap 33b of a dispenser 33, which will be described later, and at the other end. A bifurcated locking portion 6b, and a fixing portion 6c which is extrapolated to the drive shaft 5 and to which the support ring 14 is integrally fitted and fixed. And the press pad 31 is joined to one side of the press part 6a. In addition, a detection lever 6 d is projected from one side surface of the presser lever 6.

  The locking portion 6b of the presser lever 6 is engaged with a cylindrical guide bearing 32 that is inserted into the guide shaft 26 described above. Specifically, as shown in FIG. 7, the guide bearing 32 includes flange portions 32 a and 32 a at both ends, and a locking surface 32 b formed flat at a position opposite to the outer peripheral surface of the center portion. Yes. The locking surface 32b is slidably fitted into the locking portion 6b of the presser lever 6. Accordingly, since the self-aligning bearing structure in which the guide bearing 32 is movable in the direction between the pivot bearing (ball 29) of the drive shaft 5 and the guide shaft 26, the presser lever 6 is moved during the linear movement of the presser lever 6. 6 is secured by the flange portions 32a and 32a, and the presser lever 6 is about to rotate through the support ring 14 externally attached to the drive shaft 5 as the drive shaft 5 rotates. The function of preventing rotation can be performed.

  Here, the “self-aligning bearing structure” means that when a load is applied to the presser lever 6, the ball 29 of the pivot bearing, the thread groove 5a of the drive shaft 5, the drive shaft 5, the receiving member 27, the guide shaft 26 and the guide. The presser lever 6 swings up and down and falls due to the clearance of the bearing 32 and the like, and the inter-axis distance S between the support ring 14 and the guide bearing 32 changes. At this time, since the drive shaft 5 is rotatably supported with respect to the receiving member 27 and the guide shaft 26 is fixed between the support plates 23 and 24, the presser lever 6 is engaged with the guide shaft 26. If the inter-axis distance S changes when moving up and down in the state, the friction loss between the contact portion of the ball 29 of the receiving member 27 and the guide bearing 32 increases. In order not to cause such a problem, the support ring 14 and the guide bearing 32 are prevented from twisting the contact point between the screw groove 5a of the drive shaft 5 and the pin 17 of the support ring 14 with respect to the swinging of the presser lever 6 or the like. The guide bearing 32 is configured to be movable with respect to the longitudinal direction of the presser lever 6 following the change in the inter-axis distance S. Thus, the change in the inter-axis distance can be allowed.

  As shown in FIG. 8, the dispenser 33 includes a nozzle 33a, a movable cap 33b, and a container 33c. The pressed portion 34 of the movable cap 33b is moved downward by the linear movement of the presser lever 6 and collides with the pressed portion 34. As a result, the movable cap 33b of the dispenser 33 operates downward. A predetermined amount of liquid such as disinfectant is discharged from the nozzle 33a. In addition, the dispenser drive device 1 of this embodiment can use the dispenser of arbitrary structures if it is the dispenser 33 which consists of the nozzle 33a, the movable cap 33b, and the container 33c.

  The disinfectant stored in the container 33c includes a drug that is directly discharged from the container 33c and is used as it is, such as iodophor, disinfecting ethanol, amphoteric surfactant, chlorhexidine, benzalkonium chloride, benzethonium chloride, and the like. Various drugs such as alcohol preparations, disinfectants such as hypochlorous acid, and detergents are used.

  Next, the action | operation of the dispenser drive device 1 is demonstrated using FIG. As shown in FIG. 9, the rotational motion of the electric motor 3 is transmitted to the drive shaft 5 via the speed reduction mechanism 4, and is indicated by an arrow by the motion conversion mechanism 7 including a support ring 14 extrapolated to the drive shaft 5. Thus, the presser lever 6 is lowered. Then, as shown in FIG. 10, the pressing pad 31 of the pressing portion 6a of the presser lever 6 abuts on the pressed portion 34 of the dispenser 33, and the movable cap 33b is pressed to discharge a certain amount of liquid.

  Here, the movement range of the presser lever 6 is controlled by a pair of position detection mechanisms. Specifically, the limit switch LS1 for detecting the upper end position of the presser lever 6 and the limit switch LS2 for detecting the lower end position are configured. By adjusting the length of the adjusting screw 16 screwed to the detection lever 6d of the presser lever 6, It is set (see FIG. 7).

  The pair of limit switches LS1 and LS2 are attached to, for example, a support 25 facing the detection lever 6d among the plurality of supports 25 or a separate fixing member. Here, the limit switch LS1 for detecting the upper end position and the limit switch LS2 for detecting the lower end position are within a moving range in which the presser lever 6 is lowered from the upper end position to the lower end position and is raised from the lower end position to the upper end position. That is, the lower end position limit switch LS2 detects the lower end position of the linear motion of the presser lever 6, and at this lower end position, the state shown in FIG. 10 is obtained. The timing at which the limit switch LS2 for detecting the lower end position is turned on can be set by changing the length of the adjusting screw 16 screwed to the detection lever 6d, and the range of movement of the presser lever 6 can be set. The change can be set by adjusting the mounting position of the adjusting screw 16.

  The embodiment of the present invention has been described above, but the present invention is not limited to such an embodiment, and is merely an example, and various modifications can be made without departing from the scope of the present invention. Of course, the scope of the present invention is indicated by the description of the scope of claims, and further, the equivalent meanings described in the scope of claims and all modifications within the scope of the scope of the present invention are included. Including.

  The dispenser drive device according to the present invention can be applied to a dispenser drive device using an inexpensive direct current motor and having a stable and accurate linear motion performance so that it can be used in equipment used in general households.

DESCRIPTION OF SYMBOLS 1 Dispenser drive device 2 Base 2a Standing board 2b Mounting base 3 Electric motor 3a Motor shaft 4 Deceleration mechanism 5 Drive shaft 5a Screw groove 6 Presser lever 6a Pressing part 6b Locking part 6c Fixing part 6d Detection lever 7, 18 Motion conversion mechanism 8 Support mechanism 9 Intermediate shaft 10 Input gear 11 Output gears 12 and 13 Intermediate gears 14 and 19 Support ring 14a Drilling holes 15 and 16 Adjustment screw 17 Pin 17a Pin tip 20 and 29 Ball 21 Pin 22 for fixing Recess 23 24 support plate 25 column 26 guide shaft 27 receiving member 27a through-hole 28 small diameter portion 31 of drive shaft 32 pressing pad 32 guide bearing 32a collar 32b engaging surface 33 dispenser 33a nozzle 33b movable cap 33c container 34 pressed portion 50 of movable cap Support operation device 51 for disinfectant dispenser Dispenser 51c Nozzle 51b Movable cap 1a Container 52 Housing 52a Housing front surface 52b Housing both sides 52c Housing back surface 52d Housing top surface 52e Housing bottom surface 53 Movable cap pressing member 54 Container clamping member 55 Container mounting member 56 Wire 57 Viewing window LS1 Limit switch LS2 to detect Limit switch S to detect the lower end position Distance between axes

Claims (4)

A base having a mounting table for mounting the dispenser;
An electric motor attached to the base;
A speed reduction mechanism connected to the motor shaft of the electric motor;
A drive shaft to which the rotational motion of the electric motor is transmitted via the reduction mechanism;
A presser lever mounted on the drive shaft, supported in such a way as to be axially movable and non-rotatable,
A movement converting mechanism that is fitted and fixed to the presser lever, has a cylindrical support ring that is extrapolated to the drive shaft, and converts the rotary motion of the drive shaft into a linear motion of the presser lever;
A support mechanism for rotatably supporting the drive shaft,
The support mechanism is fixed to the base and is provided between a pair of support plates disposed opposite to both end portions of the drive shaft, and a space between the support plates is constant. Consists of at least three struts to hold,
The dispenser drive device according to claim 1, wherein the presser lever is lowered by a predetermined amount to abut against the movable cap of the dispenser, and a predetermined amount of liquid is discharged.   A small-diameter portion is formed at both ends of the drive shaft, and the small-diameter portion is inserted into an inner diameter of a cylindrical receiving member attached to the support plate via a predetermined radial clearance, and is also attached to an end surface of the small-diameter portion. The dispenser drive device according to claim 1, wherein a ball bearing is disposed, a pivot bearing is constituted by an adjustment screw screwed to the receiving member, and the drive shaft is rotatably supported with respect to the receiving member.   The presser lever is formed in a plate-like rectangular shape, a pressing part that contacts the movable cap of the dispenser at one end in the longitudinal direction, a bifurcated locking part formed at the other end, and the support ring And a guide shaft whose both ends are fixed to the support plate between the columns on the locking portion side of the presser lever among the plurality of columns. The dispenser driving device according to claim 1, wherein a locking portion of the presser lever is slidably engaged.   The motion conversion mechanism includes the drive shaft and a support ring. A spiral screw groove is formed on the outer periphery of the drive shaft, and a ball or a pin that engages with the screw groove is mounted on the support ring. The dispenser drive device according to claim 1.

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