JP4674752B2 - Liquid ejector - Google Patents

Description

  The present invention relates to a liquid ejector, and more particularly to a liquid ejector that can recognize the amount of ejected liquid.

  As this type of ejector, for example, a storage liquid that is required to use a predetermined amount such as a medicine can be determined for use of the predetermined amount. (Patent Document 1)

  The ejector includes a container provided with an upper end opening, means for distributing the administration fluid from the container through the opening, a ring nut for tightening the distribution means to the opening of the container, and movable for operating the distributing means. A nose as an actuating member, and elastic means for converting the movement of the nose relative to the ring nut into the rotation of the rotating element and the reciprocating motion in the axial direction. It is configured to be sequentially positioned in a window which is a predetermined observation position for each dispensing administration.

  The elastic means is comprised of a series of circumferentially spaced flexible legs, the upper of which the legs can react with the first set of one-way serrated teeth of the nose, and the ring nut. A lower portion capable of reacting with one of the second set of serrated teeth, and an intermediate portion attached to the rotating element, whereby the first set of serrated teeth is moved into the second set of serrated shapes by the action of the nose; When approaching a tooth, the upper portion of the small leg is engaged with the adjacent tooth just off the corresponding tooth of the first serrated tooth to rotate and axially move the intermediate portion of the small leg; and The first set of serrated teeth meshes with the teeth that are immediately connected to the corresponding teeth of the second set of serrated teeth, whereby the intermediate portion of the leg is rotated and moved backward in the axial direction. It is configured to make it.

Then, as described above, the numerical value of the dose appears in the window by pushing down the nose, and the radial locator protruding from the rotating element protrudes from the nose after the scheduled maximum amount of pharmaceutical dose is completed. It is configured to stop when hitting.
Japanese Patent No. 3211894

  As described above, the ejector as described above can determine the maximum number of medicines to be administered by stopping the rotating element, but the determination on the number of administrations ends at that time. Certainly, in the above-mentioned ejector, the nose can be pushed down to completely use the medicine in the container after the stop. When the operation is completed, the use of the ejector is completed.

  The present invention proposes a liquid ejector that is capable of tactilely recognizing the required number of ejections by a lock mechanism, and that has a structure that is different from the conventional one and that has no unreasonable operation and is highly durable. Further, the present invention proposes a liquid ejector capable of releasing the lock state after the required number of ejections and then releasing the required number of times from the beginning. Furthermore, a liquid ejector that makes a sound when the lock is released after the lock mechanism is activated and can recognize the lock release more clearly is proposed. Also, a liquid ejector is proposed in which the required number of ejections can be visually recognized not only by a lock mechanism but also by a display mechanism.

As a first means, a cover tube 2 fixed on the aerosol container body A and a stem 8 projecting so as to be able to be pushed in an upward biased state at the upper end of the aerosol container body are fitted, and from the top of the cover cylinder A nozzle 3 with an upper end projecting, a cylindrical push button 4 mounted on the outer periphery of the nozzle so as to be rotatable and capable of being pushed down, and a recognition system for recognizing the number of times the nozzle is pushed down, The recognition system is connected to the rotation mechanism C ₁ that rotates the rotation member 5 that is rotatable around the nozzle and can be pushed down in an upward biased state by rotating the push button by a predetermined angle. and a lock mechanism C ₂ to prevent depression of the stem when depressed a predetermined number of push button, the rotating mechanism is provided radially on the periphery of the said cover cylinder且Position a plurality of partition plates 20 having a first inclined surface S ₁ respectively, a plurality of second inclined surfaces S ₂ arranged annularly on the inner peripheral lower portion of the cover cylinder, the leading end portion to the partition plates to the lower surface Further, the rotating arm 27 protrudingly provided on the upper and lower surfaces has a third inclined surface S ₃ sliding with the first inclined surface S ₁ and a fourth inclined surface S ₄ sliding with the second inclined surface. A rotating member, and the fourth inclined surface slides on the second inclined surface when the rotating member is lowered by pressing down the push button, and the third inclined surface is the first inclined when the rotating member is raised. The rotating arm is configured to slide over the inclined surface so as to get over the adjacent partition plate 20t, and the locking mechanism includes a locking surface a at a predetermined position between the second inclined surfaces, and the rotating arm. the lower surface 27 is composed as to prevent the lowering of the diffraction Doude as locked face b abutting on the locking surface a, before The lock release mechanism C ₃ to release the locked state of the lock mechanism C ₂ is provided, said lock release mechanism, as well is located in the wide portion 21 downwardly provided between the locking surface partition plate 20 of the predetermined portion of a, the the cover tube 2 configured to allow rotation of a predetermined rotation range the respective second inclined surfaces S _2, times by a partition plate adjacent said engaging surface above the swing arm 27 by the rotation of the cover cylinder It was configured to move.

As a second means, in the first means, the rotating member 5 is provided with a plurality of short auxiliary rotating arms 27a projecting from the rotating arm 27 at respective predetermined angular positions in the circumferential direction. A partition plate corresponding to each auxiliary rotating arm when the rotating arm is positioned above the stop surface a is configured as a narrow narrow partition plate 20a in which each auxiliary rotating arm is not in contact.

As a third means, in the said first means, when the lock release by the unlocking mechanism C _3, provided the sound output mechanism emits sound by the rotation of the rotary member 5.

As a fourth means, in the first means, as the recognition system, in addition to the rotating mechanism C ₁ and the locking mechanism C ₂ , the cover when the rotating arm 27 shifts to the locked state. A display mechanism C ₄ is provided that allows the display 28 to face the window hole 19 provided at a predetermined position of the cylinder 2.

As a fifth means, in the first means, a plurality of auxiliary turning arms 27a having the same configuration projecting from the turning arm 27 at equal intervals in the circumferential direction, and the wide portion 21 and the locking portion The same number of wide portions 21 and locking surfaces a corresponding to the auxiliary turning arms are provided at equal intervals with the surface a.

In the liquid ejector of the present invention, a predetermined ejected liquid is ejected by a simple operation of pushing the push button 4, and the lock mechanism C ₂ is activated when the required number of ejections of the stored liquid is reached, and the push button 4 is depressed. As a result, the ejection of liquid is prevented, and it can be tactilely recognized that the ejected liquid has reached a predetermined amount. The rotating mechanism C ₁ constituting the recognition systems, the fourth inclined surface during downward movement of said rotary member by depressing the push button slides the second inclined surface, and wherein when rise of the rotating member Since the third inclined surface slides on the first inclined surface and the rotating arm gets over the adjacent partition plate 20t, the operation is easy and the durability is excellent, and the operation is very easy.

Further, when the unlocking mechanism C ₃ is provided, the necessary number of ejections can be ejected from the beginning again after the necessary number of ejections is completed, and this operation can be repeated any number of times according to the capacity of the aerosol container body A. .

  The rotating member 5 is provided with a plurality of short auxiliary rotating arms 27a projecting from the rotating arm 27 at positions spaced apart from each other by a predetermined angle in the circumferential direction, and when the rotating arm is positioned above the locking surface a. When the partition plate at a predetermined position corresponding to each auxiliary rotation arm is configured as the narrow partition plate 20a that is not in contact with each auxiliary rotation arm, there is no backlash between the rotation arm 27 and the auxiliary rotation arm 27a. The rotating member 5 can be stably rotated, and a smooth liquid can be ejected.

When unlocking by the lock release mechanism C _3, the apparatus having provided a sound output mechanism emits sound by the rotation of the rotary member 5, there is an advantage that can be recognized more clearly by the hearing unlocking.

As a recognition system, in addition to the rotation mechanism C ₁ and the lock mechanism C ₂ , a display 28 is displayed in the window hole 19 provided at a predetermined position of the cover cylinder 2 when the rotating arm 27 is shifted to the locked state. When the display mechanism C ₄ is provided, the end of the liquid ejection can be recognized not only by touch but also visually, and the planned amount can be understood more reliably.

  A plurality of auxiliary rotating arms 27a having the same shape projecting from the rotating arm 27 at equal intervals in the circumferential direction, and corresponding to the auxiliary rotating arm at equal intervals from the wide portion 21 and the locking surface a. In the case of providing the same number of the wide portions 21 and the locking surfaces a, the lock member can be locked and unlocked a plurality of times while the rotating member 5 makes one turn, and in the case of the content with a small necessary amount In this case, it is possible to rotate the rotating member stably without rattling.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an example of the liquid ejector 1 according to the present invention, and the ejector 1 includes an aerosol container body A and an ejector B, and the ejector B further includes a cover cylinder 2, a nozzle 3, a push button 4, and the like. The rotating member 5 is provided.

  In the aerosol container body A, a stem 8 is erected so as to be able to be pushed down from the upper end of a cylindrical barrel 7 having a metering valve therein, and a fixed amount of liquid is ejected from the stem 8 when the stem 8 is pushed down. It is the thing of the well-known structure comprised as follows.

  The cover cylinder 2 has a lower end portion fitted and fixed to the outer periphery of the upper end of the aerosol container body A, and a window hole 9 for projecting the nozzle 3, the push button 4 and the like is provided at the top portion. In the illustrated example, a mounting member 2b formed as a separate member is fitted to the lower end portion of the cover cylinder body 2a in which the top wall 11 having the window hole 9 provided at the center portion is extended from the upper end edge of the peripheral wall 10. It is fitted and fixed to the aerosol container body A via the member 2b.

  The mounting member 2b has a fitting cylinder portion 12 fitted to the upper end of the outer periphery of the aerosol container body A suspended from the lower surface of the flange-like base plate portion 13 and rotated from the inner peripheral edge of the base plate portion 13. A guide tube portion 14 for guiding the vertical movement of the member 5 is suspended. In addition, a connecting cylinder part 15 is provided on the outer peripheral edge of the base plate part 13 so as to be fitted to the cover cylinder main body 2a. The connecting cylinder portion 15 has a lower end portion having a large diameter via a flange, and a cut groove 16 having a predetermined length is provided in the flange portion.

  The lower part of the peripheral wall 10 of the cover tube main body 2a is fitted to the outer periphery of the connecting tube portion 15 of the mounting member 2b so as to be rotatable and prevented from being pulled out by the uneven engagement means. The peripheral wall 10 is reduced in diameter by a flange at the center in the vertical direction, and a protrusion 17 projecting from the lower surface is loosely fitted in the cut groove 16 to rotate the cover cylinder body 2a with a predetermined width relative to the mounting member 2b. Is configured to be possible. A window hole 19 is formed in a predetermined position on the peripheral wall 10.

A plurality of partition plates 20 are provided radially on the peripheral edge in the cover tube 2. Each partition plate 20 is provided at equal intervals, and its lower surface is configured as a first inclined surface S ₁ facing in a direction perpendicular to the radius. However, in this example, the wide portion 21 is provided in a state where one partition plate is removed at a predetermined location. Further, a protruding portion 22 is provided on the partition plate 20 on the rotating arm introduction side of the wide portion 21. The protrusion 22 is pressed when the rotating arm 27 in the locked state is rotated to the unlocked state, and is not necessarily required. In the illustrated example, a fifth inclined surface S ₅ continuous with the first inclined surface S ₁ is provided on the lower surface, and a vertical rib shape having a predetermined protruding width is formed. Further, the two partition plates at a predetermined number of positions from the wide portion 21 are configured as narrow partition plates 20a whose center side end faces are recessed outwardly to shorten the radial length.

  Each of the partition plates 20 and the narrow partition plate 20a is formed integrally with the cover cylinder 2, but naturally it can be formed separately and assembled, and in that case, a relatively large thickness is often required. There is an advantage that the partition plate 20 can be formed more easily and the occurrence of sink marks and the like can be prevented as much as possible.

In addition, a plurality of second inclined surfaces S ₂ are annularly arranged at the lower part of the inner peripheral edge of the cover cylinder 2. In principle, each second inclined surface S ₂ has the same number as the first inclined surface S _1, and is provided at a position where a pair of adjacent first inclined surfaces S ₁ are crossed. In the illustrated example, protrusions 24 having a right-angled triangular cross section are arranged on the upper surface of the base plate 13 in an annular shape at equal intervals, and the inclined surfaces of the protrusions 24 are configured as second inclined surfaces S ₂ , respectively. In addition, one end edge of the second inclined surface S ₂ is located in the middle portion of the corresponding first inclined surface S ₁ , and the other end edge of the second inclined surface S ₂ is adjacent to the first inclined surface S ₁ . The first inclined surface S ₁ is configured so as to be positioned in the middle in the circumferential direction.

Further, a locking surface a constituting a lock mechanism C ₂ described later is provided at a predetermined position between the second inclined surfaces S ₂ . In the illustrated example, the locking surface a is provided below the wide portion 21 at a position that prevents the rotating arm 27 that has shifted to the wide portion 21 from being pushed down, and has a width corresponding to two protrusions 24. It is provided on the upper surface of the stopping projection 24a. The locking projection 24a is in the form that fills the space, which is further projected lateral square column portion thereon using a pair of projections 24 for forming the second inclined surface S _2.

  The nozzle 3 is fitted on the stem 8 of the aerosol container body A, and has an upper end projecting from the top of the cover tube 2 so as to be pushed upward. In the example of FIG. 1, a cylinder in which a lower end portion is liquid-tightly fitted on the outer periphery of the stem 8 and a bottomed cylindrical portion for locking the lower end portion of the coil spring 25 is projected outward from the lower end edge. It has a shape. Therefore, when the nozzle 3 is pushed down, the stem 8 is pushed down, and a fixed amount of liquid is ejected by a known ejection mechanism in the aerosol container body A.

  The push button 4 has a cylindrical shape in which an upper outer peripheral portion of the nozzle is mounted so that the nozzle can be pushed down. In the illustrated example, a double cylinder is formed with a configuration that allows the nozzle 3 to be pushed in via the rotating member 5, and is fitted to the upper outer peripheral portion of the nozzle 3 via an upper cylindrical wall portion described later of the rotating member 5. The lower surface of the rotating member is placed in contact with the upper surface of a flange portion (described later) of the rotating member via a protrusion 26.

Rotating member 5, the rotatable and around the nozzle 3 which was provided to be pushed down by the upper bias state, and the first inclined surface S ₁ and the sliding is positioned the tip between a pair of the partition plate 20 Rotating arms 27 each having a third inclined surface S ₃ that moves and a fourth inclined surface S ₄ that slides with the second inclined surface S ₂ are provided on the upper and lower surfaces. In the illustrated example, the lower cylindrical wall portion 5c formed in a large diameter from the lower end of the upper cylindrical wall portion 5a fitted to the upper outer periphery of the nozzle 3 so as to be rotatable and vertically movable is formed through the flange portion 5b. The guide tube portion 14 is fitted to the inner periphery of the guide tube portion 14 so as to be vertically movable and rotatable. Further, the rotating arm 27 protrudes outward from a predetermined position at the upper end portion of the lower cylindrical wall portion 5c, and the distal end portion thereof is positioned between the pair of partition plates 20. The third inclined surface S ₃ is inclined in a direction perpendicular to the radial direction, and is slidable when the first inclined surface S _{1 of} each partition plate 20 and the first inclined surface S ₁ have substantially the same inclination angle and are in contact with each other. It is configured. Similarly, the fourth inclined surface S ₄ is also inclined in a direction orthogonal to the radial direction, and is configured to be slidable when the two inclined surfaces S ₂ are in contact with each other with the same inclination angle.

  The rotation arm 27 is sufficient if at least one rotation arm 27 is present. However, in order to rotate the rotation member 5 with more stable and less rattling, an auxiliary rotation arm can be provided in addition to the rotation arm. good. The auxiliary rotating arm may be the same length as the rotating arm or may be a short one, and can be appropriately selected depending on the specified ejection amount. When the auxiliary turning arm having the same length as the turning arm is employed, at least a prescribed amount of ejection of a plurality of cycles is performed while the turning arm 27 is rotated 360 °.

In the case of the illustrated example, two short auxiliary rotating arms 27a, 27a are projected with a circumferential interval therebetween, and each auxiliary rotating arm is formed at a predetermined protruding position on the upper and lower surfaces thereof. Respectively form the same third inclined surface S ₃ and fourth inclined surface S ₄ . The number of such auxiliary rotating arms 27a is not particularly limited, but about two to three seems to be appropriate. Further, the projecting position of such a short auxiliary rotating arm 27a is provided so that the angles formed by the adjacent rotating arm or auxiliary rotating arm are different from each other. The projecting width is a projecting width that abuts the other partition plate 20 and its inclined surface without contacting the narrow partition plate 20a.

  Further, the distal end portion of the rotating arm 27 is positioned at a level facing the window hole 19 of the cover cylinder peripheral wall 10, and on the distal end surface, an indication 28 indicating the end expressed by letters, symbols, patterns, solid coating, etc. They are provided by appropriate methods such as printing and sticking of sealing materials. The coil spring 25 is interposed between the lower surface of the flange portion 5b and the upper surface of the bottomed cylindrical portion of the nozzle 3 so as to constantly bias upward.

In the present invention, a recognition system is provided for recognizing the number of times the nozzle 3 is pushed down, and thus recognizing the number of times the ejection liquid is ejected, that is, the ejection amount. C ₁ and a lock mechanism C ₂ that is linked to the rotation mechanism and prevents the stem 8 from rising when the push button 4 is pressed a predetermined number of times.

The rotation mechanism C ₁ includes a partition plate 20 having the first inclined surface S ₁ , the second inclined surface S _2, and the rotating member 5 having the third inclined surface S ₃ and the fourth inclined surface S _4. And the fourth inclined surface S ₄ slides on the second inclined surface S ₂ when the rotating member 5 is lowered by pressing down the push button 4, and the third inclined surface is the first inclined surface S when the rotating member 5 is raised. _The sliding arm 27 is configured to slide over the adjacent partition plate 20t.

Referring to FIG. 4, the state (a) in FIG. 4 shows that the rotating arm 27 is an adjacent partition plate 20t which is the partition plate 20 adjacent to the locking projection 24a, and its further. When the rotary member 5 is pushed down against the upward biasing force of the coil spring 25 and the stem 8 by pushing down the push button 4 from this state, the flange portion 5b and the nozzle 3 are moved. The bottomed cylindrical portion comes into contact with the nozzle 3 and pushes down the nozzle 3 to eject a predetermined amount of liquid. Further, swing arm 27 is lowered to the second inclined surface S ₂ is guided by the initially adjacent partition plate 20t to the fourth inclined surface S ₄ abuts (FIG. 4 (b)), followed by the fourth inclined surface S ₄ slides on the second inclined surface S ₂ and moves downward to the first inclined surface S ₁ (FIG. 4 (c)). Then, when the push button 4 is released, the rotating arm 27 rises and its third The inclined surface S ₃ contacts the first inclined surface S ₁ of the adjacent partition plate 20t (FIG. 4 (d)), and further slides on the first inclined surface S ₁ and the fifth inclined surface S ₅ by the upward biasing force. Thus, the rotating arm 27 gets over the partition plate 20t (FIG. 4E).

The locking mechanism C ₂ is provided with a locking surface a at a predetermined position between the second inclined surfaces S ₂ , and the lower surface of the rotating arm 27 is used as the locked surface b contacting the locking surface a. The arm 27 is configured to prevent the lowering of the arm 27 and to prevent the stem 8 from being pushed. In the example of FIG. 1, the upper surface of the locking projection 24 is configured as the locking surface a as described above. If the lock mechanism C ₂ is described with reference to FIG. 4, when the push button 4 is similarly depressed from the state of FIG. 4 (e), the rotating arm 27 is slightly lowered and is abutted and locked on the locking surface a. Therefore, the stem 8 is not lowered and the liquid is prevented from being ejected (FIG. 4 (f)). Accordingly, the push button 4 cannot be pushed when the rotating arm 27 is rotated to a predetermined position, and as a result, it can be tactilely recognized that a predetermined amount of liquid has been ejected. Note that the rotating arm 27 in the locked state can prevent the stem 8 from being pushed in even if it can be slightly lowered as shown in the drawing.

Further, in the present embodiment is provided with the lock release mechanism C ₃ to release the locked state by the lock mechanism C _2. This unlocking mechanism C ₃ is configured such that after the ejection of a predetermined ejection amount is once finished by the locking mechanism C ₂ , a new ejection amount can be newly started from the beginning. The cover cylinder 2 is positioned below the wide portion 21 provided between the partition plates, and the cover cylinder 2 is configured to be rotatable with a predetermined rotation width with respect to each second inclined surface S ₂ . The rotating arm 27 above the locking surface is configured such that the partition plate 20 rotates.

  Referring to FIG. 5, FIG. 5 (a) shows the rotating arm 27 in the state shown in FIG. 4 (e). At this time, the protrusion 17 at the lower end of the cover tube main body 2a is attached to the mounting member 2b. It is located at one edge of the kerf 16. When the cover cylinder main body 2a is rotated with respect to the mounting member 2b from this state, the protrusion 22 of the partition plate 20 pushes and rotates the rotating arm 27, and the protrusion 17 rotates to the other edge of the cut groove 16. 5 (b). Next, the cover cylinder main body 2a is returned to its original state even if it is rotated in the reverse direction so that the rotating arm 27 can be rotated (FIG. 5 (c)), and a new predetermined amount of ejected liquid can be ejected. It can be in a state.

Further, in this embodiment, when the lock release by the unlocking mechanism C _3, is provided with a sound output mechanism emits sound by the rotation of the rotary member 5. In the example shown in the figure, a sound generating vibrator 30 is projected from the tip side of the rotating arm 27, and the vibrator 30 is provided at a predetermined position on the inner surface of the peripheral wall 10 of the cover cylinder 2 when unlocking. It is configured to make a sound overcoming.

  The liquid ejector 1 configured as described above will be described by taking as an example a case where the stored liquid is a scalp medicine. For example, if the push button 4 is pressed into contact with the scalp and the like, the nozzle 3 is pushed in and the stored liquid is ejected. When the predetermined number of times is reached, the locked surface b on the lower surface of the rotating arm 27 comes into contact with the locking surface a and cannot be pushed down any more, and therefore no further ejection can be performed. At this time, a display 28 such as an end character can be seen from the window hole 19, and the end can be recognized visually. In the next use, the cover cylinder main body 2a is rotated by a predetermined width, and by rotating the cover cylinder main body 2a in reverse, the rotating arm 27 on the locking surface a is displaced and the liquid can be ejected. A fixed amount of liquid can be ejected.

  In the above example, the rotating member 5 provided with the auxiliary rotating arm 27a shorter than the rotating arm 27 is described. However, as shown in FIG. The auxiliary rotating arms 27a are provided at equal intervals, and the wide portion 21 and the locking surface a are provided at three equal intervals, thereby completing the required ejection amount three times during the rotation of the rotating arm 27. It can be set as the form which can be recognized. By providing the auxiliary rotating arm 27a having the same length as the rotating arm 27, the rotating member 5 can be rotated more stably and less loosely.

It is a disassembled perspective view of this invention liquid ejector. Example 1 It is a longitudinal cross-sectional view of this invention liquid ejector. Example 1 It is explanatory drawing explaining the partition plate of this invention liquid ejector. Example 1 It is explanatory drawing explaining the rotation effect | action of this invention liquid ejector. Example 1 It is explanatory drawing explaining the lock release of this invention liquid ejector. Example 1 It is principal part expansion explanatory drawing of the sound emission mechanism part of this invention liquid ejector. Example 1 It is explanatory drawing explaining the partition plate of this invention liquid ejector. (Example 2)

Explanation of symbols

2 ... Cover cylinder, 3 ... Nozzle, 4 ... Push button, 5 ... Rotating member, 8 ... Stem, 19 ... Window hole,
20 ... partition plate, 20a ... narrow partition plate, 20t ... adjacent partition plate, 21 ... wide part, 27 ... rotating arm,
27a ... auxiliary rotation arm, 28 ... display, A ... aerosol container body, C ₁ ... rotation mechanism,
C ₂ ... Lock mechanism, C ₃ ... Unlock mechanism, C ₄ ... Display mechanism, S ₁ ... First inclined surface,
S ₂ ... 2nd inclined surface, S ₃ ... 3rd inclined surface, S ₄ ... 4th inclined surface, a ... Locking surface, b ... Locked surface

Claims (5)

A cover cylinder (2) fixed on the aerosol container body (A) and a stem (8) projecting so as to be able to be pushed in an upward biased state on the upper end of the aerosol container body, and fitted from the top of the cover cylinder A nozzle (3) having a protruding upper end, a cylindrical push button (4) mounted on the outer periphery of the nozzle so as to be rotatable and capable of depressing the nozzle, and a recognition system for recognizing the number of times the nozzle is depressed And the recognition system comprises: a rotating mechanism (C ₁ ) that rotates a rotating member (5) that is rotatable around the nozzle and is capable of being pressed down in an upward biased state by rotating the push button by a predetermined angle; causes cooperated job and the rotating mechanism, and a lock mechanism (C ₂₎ to prevent depression of the stem when depressed a predetermined number of said push button, the rotating mechanism is, the peripheral portion within the cover cylinder A plurality of partition plates provided with the first inclined surface (S _1), respectively and a lower surface provided radially (20), a plurality of second inclined surfaces arranged annularly on the inner peripheral lower portion of the cover cylinder and (S ₂₎ A third inclined surface (S ₃ ) that slides with the first inclined surface (S ₁ ) and a fourth inclined surface (S ₄ ) that slides with the second inclined surface with the tip portion positioned between the partition plates. And a rotating arm (27) projecting from each other on the upper and lower surfaces, and the fourth inclined surface slides on the second inclined surface when the rotating member is lowered when the push button is depressed. And when the rotating member is raised, the third inclined surface slides on the first inclined surface so that the rotating arm gets over the adjacent partition plate (20t). A locking surface (a) is provided at a predetermined position between two inclined surfaces, and the lower surface of the rotating arm (27) is connected to the locking surface (a). Contacting the lowering of the times Doude was composed as to prevent the locked face (b), the lock release mechanism for releasing the locked state of the locking mechanism (C ₂₎ (C ₃₎ provided, said lock release mechanism The locking surface (a) is positioned below the wide portion (21) provided between the partition plates (20) at predetermined locations, and the cover cylinder (2) is placed on each of the second inclined surfaces (S ₂ ). The rotating arm (27) above the locking surface is rotated by an adjacent partition plate by the rotation of the cover cylinder, and the rotating cylinder (27) is configured to rotate. Liquid ejector. The rotating member (5) is provided with a plurality of short auxiliary rotating arms (27a) projecting from the rotating arm (27) at positions spaced apart from each other by a predetermined angle in the circumferential direction, and the rotating member (5) rotates above the locking surface (a). The liquid ejector according to claim 1, wherein a partition plate corresponding to each auxiliary rotating arm when the moving arm is positioned is configured as a narrow narrow partition plate (20a) in which each auxiliary rotating arm is not in contact . The lock during unlocking by release mechanism (C _3), said rotary member (5) liquid ejector according to claim 1 wherein formed by providing a sound output mechanism emits sound by the rotation of the. As the recognition system, in addition to the rotation mechanism (C ₁ ) and the lock mechanism (C ₂ ), the cover cylinder (2) is provided at a predetermined position when the rotating arm (27) is shifted to the locked state. The liquid ejector according to claim 1, further comprising a display mechanism (C ₄ ) that allows the display (28) to face the window hole (19) . A plurality of auxiliary rotating arms (27a) having the same shape projecting from the rotating arm (27) at equal intervals in the circumferential direction, and at equal intervals from the wide portion (21) and the locking surface (a). The liquid ejector according to claim 1, wherein the same number of the wide portions (21) and the locking surfaces (a) corresponding to the auxiliary rotating arms are provided.

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