JP2009035291A - Injector capable of quantitatively spouting - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a new injector capable of quantitatively spouting which can be appropriately used in accordance with various uses such as medical supplies, cosmetics and adhesives and a user's interest. <P>SOLUTION: A syringe 110 includes a rotatable ring member 150 with a projecting part 151 on its inside. Respective plungers 131 have a plurality of restricting parts 133 for restricting amounts of strokes by placing intervals ΔC along the plunger axis, coming into contact with the projecting part 151 accompanied with pushing-in of a composite plunger 130. When the ring member 150 is rotatably operated to allow the pushing-in of the composite plunger 130, the restricting parts existing on the back end side from the plunger than the projecting part 151 in advance align with the projecting part 151 and the restricting part 133 restricts the amount of stroke accompanied with pushing-in of the plunger 130 thereafter. Successively, it is repeatedly arranged so that when the ring member 150 is rotatably operated to allow the furthermore pushing-in of the plunger 130 to shift the projecting part 151, the restricting parts on the plunger back end side more than the projecting part 151 in advance align with the projecting part 151, and the amount of stroke accompanied with the pushing-in of the plunger 130 thereafter is restricted. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention is a dispenser comprising a syringe in which a filling space for filling the contents is formed, a piston slidably disposed in the filling space, and a plunger for supporting the piston at the tip. It relates to the technology that enables the quantitative dispensing of sewage.

The applicant of the present application has already proposed a double dispenser that can separately dispense different contents and dispenses them simultaneously using a ratchet mechanism. (For example, see Patent Document 1)
JP 2003-341749 A

  The contents of such dispensers include various items such as pharmaceuticals, cosmetics, adhesives, etc., and their fields of use are diverse.

  For this reason, it is preferable that the operation method for performing the quantitative dispensing from the dispenser can be properly used according to the application, the user's preference, and the like.

  The present invention has been made on the basis of such fact recognition. The purpose of the present invention is to provide a new dispensing that can be dispensed in a quantitative manner so that it can be properly used according to the application and user's preference. Is to provide a vessel.

  A multiple dispenser capable of quantitative dispensing according to the present invention includes a syringe in which a filling space for filling contents is formed, a piston that is slidably disposed in the filling space, and a plunger that supports the piston at the tip. A syringe having an opening through which the plunger passes and having a ring member rotatable around the plunger, the ring member having a protrusion on the inside thereof, the plunger being In addition, there are a plurality of stroke amount limiting portions that are spaced along the axis and contact the projecting portion of the ring member as the tip is pushed in to limit the stroke amount. When the ring member is rotated to allow the plunger to be pushed in, the plunger is aligned in advance with the protrusion on the rear end side of the plunger with respect to the protrusion of the ring member. Even when the ring member is rotated and the projection of the ring member is shifted in order to limit the stroke amount accompanying the push-in and subsequently allow further push-in of the plunger, the plunger is more in advance than the projection of the ring member. It is characterized by being arranged repeatedly in sequence so as to be aligned with the protrusion on the rear end side and limit the stroke amount associated with the subsequent pushing of the plunger.

  As a specific example of the arrangement of the stroke amount limiting portions, for example, the stroke amount limiting portions are alternately arranged at positions facing each other across the center of the ring member.

  Specifically, in the case where the dispenser according to the present invention includes one or more plungers, they are staggered at positions facing each other across the axis of the plunger.

Furthermore, the dispenser according to the present invention forms a plurality of syringe filling spaces in parallel, and the pistons arranged in the filling spaces are synchronized with each other by a composite plunger integrally connecting the rear ends of the plurality of plungers. If it is a multiple dispenser that allows, such an arrangement is
The composite plunger is realized by juxtaposing two identical plungers each having a stroke amount limiting portion so that the directions and heights of the stroke amount limiting portions of the plunger coincide with each other.

Also, such an arrangement is
Each plunger has a stroke limit part,
It is also realized by arranging the stroke amount limiting portions so as to be staggered with respect to adjacent plungers.

  In addition, according to the present invention, the plunger preferably has a rotation restricting portion that restricts the rotation operation of the ring member by contact with the projecting portion and aligns the projecting portion and the stroke amount restricting portion.

  In the rotation restricting portion according to the present invention, when the plunger has a plurality of fins protruding radially from the axis and extending along the axis, the fin can be used as the rotation restricting portion.

  When the rotation restricting portion according to the present invention is a fin, the side edge of the protruding portion can be brought into contact with the side surface of the fin by rotation of the ring member.

  However, when the protruding portion comes into contact with the side surface of the fin, if the fin has a different fin from the fin, the different fin may interfere with the protruding portion of the ring member. For this reason, in such a case, in order to avoid contact with different fins during the rotation of the ring member, it is preferable to provide an inner edge portion formed in an arc shape in the protruding portion.

  Further, when the rotation restricting portion according to the present invention is used as a fin and the projecting portion of the ring member is brought into contact, in addition to contacting the projecting portion with the side surface of the fin, a cantilever support piece is provided on the projecting portion. The support piece may be detachably engaged with the rotation restricting portion.

  Moreover, according to this invention, you may form a slit in a rotation control part at least, and let the protrusion part of a ring member pass between this slit.

  In addition to the fins, the rotation restricting portion according to the present invention forms an elastic tongue piece on the ring member, and the protrusion or recess provided on the elastic tongue piece serves as the rotation restricting portion. And may be detachably engaged.

  According to the present invention, if the ring member provided on the syringe is rotated and the protrusion provided on the inner side of the ring member is shifted from the arbitrary stroke amount limiting portion to allow the plunger to be pushed, this arbitrary Since the stroke amount limiting portion on the rear end side of the plunger is aligned with the protruding portion of the ring member in advance with respect to the stroke amount limiting portion, the stroke amount when the plunger is pushed toward the tip (syringe) side thereafter is It is restricted by the stroke amount restriction part on the side. That is, according to the present invention, it is possible to dispense a fixed amount in accordance with the arrangement interval of the stroke amount restricting portion simply by pushing the plunger into the syringe.

  In addition, after that, in order to allow the plunger to be pushed further, the present invention rotates the ring member and shifts the protrusion from the stroke amount limiting portion on the plunger rear end side. Since the protruding portion of the ring member is aligned in advance with the stroke amount limiting portion on the rear end side of the plunger further than the stroke amount limiting portion on the side, even if the compound plunger is pushed in again after one time of constant dispensing, Quantitative dispensing according to the arrangement interval of the stroke amount limiting portion is possible.

  Therefore, according to the present invention, each time the ring member is rotated, the content corresponding to the arrangement interval of the stroke amount limiting portions can be dispensed quantitatively from each filling space of the syringe.

  In the present invention, if the stroke amount limiting portions provided in the plunger are arranged so as to be staggered at positions opposed to each other across the axis of the plunger, the dispenser according to the present invention will connect the filling space of the syringe and the plunger. A single type of dispenser as well as a plurality of syringe filling spaces are formed in parallel, and the pistons arranged in each filling space are synchronized by a composite plunger that integrally connects the rear ends of the plurality of plungers. It can also be applied to multiple dispensers that can be operated.

  Further, according to the present invention, it is also possible to provide a stroke amount limiting portion on each plunger of the composite plunger, and arrange the stroke amount limiting portions so as to be staggered with respect to adjacent plungers. Applicable to vessels.

  In addition, according to the present invention, the plunger having the stroke amount restricting portion is provided with the rotation restricting portion that restricts the rotation operation of the ring member by contact with the projecting portion and aligns the projecting portion and the stroke amount restricting portion. By providing, the positioning between the projecting portion and the stroke amount limiting portion is facilitated, which is convenient.

  In the rotation restricting portion according to the present invention, when the plunger has a plurality of fins that protrude radially from the axis and extend along the axis, the existing configuration is used if the fin is the rotation restricting portion. Since there is no need to provide a separate rotation restricting portion, the weight of the plunger can be reduced and it is easy to use.

  When the rotation restricting portion according to the present invention is a fin, if the side edge of the protruding portion is brought into contact with the side surface of the fin by rotation of the ring member, Since the side surface of the fin that spreads widely is used, the protruding portion of the ring member is surely stopped by contact with the fin, and the positioning of the protruding portion and the stroke amount limiting portion can be realized with high reliability.

  Further, according to the present invention, when the protrusion comes into contact with the side surface of the fin, when there is a fin different from the fin on the plunger, the protrusion is avoided in order to avoid contact with the different fin during rotation of the ring member. If the inner edge portion formed in an arc shape is provided in the portion, the ring member can be rotated without interference of the protrusion of the ring member even if such different fins exist. Is good.

  Further, when the rotation restricting portion according to the present invention is used as a fin and the projecting portion of the ring member is brought into contact, in addition to contacting the projecting portion with the side surface of the fin, a cantilever support piece is provided on the projecting portion. When the support piece is detachably engaged with the rotation restricting portion, a click feeling is given to the user at the time of engagement, so that the protrusion and the stroke amount restricting portion can be surely recognized.

  Further, in the present invention, if a slit is formed at least in the rotation restricting portion, and the protruding portion of the ring member is passed between the slits, it is convenient for giving a degree of freedom to the rotation operation of the ring member. In particular, when there is a fin in the plunger, if a similar slit is provided in addition to the fin used as the rotation restricting portion, the ring member can be rotated without the protrusion of the ring member interfering with the remaining fin. Because it can, it is more convenient.

  Further, the rotation restricting portion according to the present invention is provided with an elastic tongue piece on the ring member in addition to the radially outward fins, and the protrusion or recess provided on the elastic tongue piece is provided on the syringe as the rotation restricting portion. If the recess or protrusion is detachably engaged, the projecting portion and the stroke amount limiting portion are positioned in order to give the user a click feeling when engaging, as in the case where the cantilever support portion is provided. This can be recognized with certainty.

  Thus, if a new dispenser capable of quantitative dispensing is provided, the user can use the dispenser appropriately in accordance with the application, preference, etc., together with the conventional dispenser using the ratchet mechanism.

  Hereinafter, the present invention will be described in detail with reference to the drawings.

  1 (a) and 1 (b) are respectively a front view showing a partial injection syringe 100 which is a first embodiment of the present invention in a partial cross section, and an essential view showing it from an XX cross section and a YY cross section. FIG.

  FIGS. 2 (a) and 2 (b) are a perspective view and a cross-sectional view of the main part showing an operation portion used for quantitatively dispensing the contents of the syringe 100, respectively.

  3 (a) and 3 (b) are cross-sectional views showing the state when the ring member 150 described later is rotated from the rear end side of the syringe 100, respectively.

  Further, FIGS. 4A to 4C are side views schematically showing a composite plunger 130 described later in order to explain each step when quantitative dispensing is performed from the syringe 100. FIG.

  Reference numeral 110 denotes a syringe in which two filling spaces R for filling liquid contents are formed in parallel. The syringe 110 has a finger flange 112 for hooking a finger closer to the front end side than the rear end portion (hereinafter referred to as “syringe rear end portion”) 111. The finger flange 112 has a shape close to an ellipse as shown in FIGS. 2A and 3, and the filling space R extends along the longitudinal direction from the rear end of the syringe 110 as shown in FIG. 1. It has a cylindrical shape that extends and opens at the tip side.

  Reference numeral 120 denotes a piston slidably disposed in each filling space R. Reference numeral 130 denotes a composite plunger having a plurality of plungers 131 that support the pistons 120 at the distal ends and integrally connecting the rear ends thereof to form a pressing portion 130a. Accordingly, when the user presses the pressing portion 130a of the composite plunger 130 toward the inside of the syringe 110, the two plungers 131 (pistons 120) can be operated synchronously.

  The reference numeral 140 shown in FIG. 1 is a mixing nozzle for pouring the two contents pushed out from each filling space R to the outside while mixing them. The mixing nozzle 140 includes an outer part 141 that forms the outer shape thereof, and a mixing part 142 that is detachably held inside the outer part 141, and is detachably held by the syringe 110 via the outer part 141.

  As a result, the two contents in the syringe 110 are respectively pumped and mixed into the mixing nozzle 140 by the same amount in accordance with the stroke amount of the composite plunger 130, and then poured out from the mixing nozzle 140.

  Reference numeral 150 denotes a ring member provided at the syringe rear end 111. As shown in FIG. 3, the ring member 150 has an opening through which the composite plunger 130 passes, and is slidable with an annular groove 111a formed along the outer peripheral surface of the syringe rear end 111 inside thereof. A protrusion 150a to be fitted is provided. This allows the ring member 150 to rotate around the composite plunger 130 relative to the finger flange 112.

  Furthermore, the ring member 150 has two protrusions 151 extending toward the central axis O on the inner side thereof. The protrusions 151 are arranged to face each other with the central axis O in between. The shape of the protrusion 151 is not limited, but is preferably configured as a flat plate as shown in FIG.

  On the other hand, each of the plungers 131 of the composite plunger 130 has four fins 132 protruding radially from the longitudinal axis (hereinafter referred to as “plunger axis”) Op of the plunger 131 and extending along the axis Op. Is formed.

  Of the four fins 132, the two fins 132a constitute radial outward fins (hereinafter referred to as “stopper fins”) that are directed radially outward from the center O of the ring member 150, and the remaining two fins. Each of 132b constitutes a remaining fin projecting outward along a direction orthogonal to the stopper fin 132a.

  Further, each plunger 131 is spaced by a constant distance ΔC along the plunger axis Op, and the protrusions 151 are aligned by the rotation operation of the ring member 150, so that the composite plunger 130 is pushed toward the tip side. A plurality of stroke amount limiting portions (hereinafter referred to as “restricting portions”) 133 that limit the stroke amount of the composite plunger 130 in contact with the protruding portion 151 of the ring member 150 are provided.

  When the ring member 150 is rotated to allow the composite plunger 130 to be pushed, each of the plurality of limiting portions 133 is aligned with the protruding portion 151 in advance on the plunger rear end side with respect to the protruding portion 151 of the ring member 150. Then, the stroke amount accompanying the pushing of the composite plunger 130 is limited, and then the ring member 150 is rotated to shift the protrusion 151 so as to allow further pushing of the composite plunger 130. In addition, they are arranged in order repeatedly so as to be aligned with the protruding portion 151 in advance on the rear end side of the plunger from the protruding portion 151 and limit the stroke amount associated with the subsequent pushing of the plunger.

  More specifically, as shown in FIG. 1 (b), the composite plunger 130 of the present embodiment is provided with a restricting portion 133 with respect to each plunger 131 with a constant interval ΔC along the plunger axis Op. Each of the plungers 131 is arranged in a staggered position across the plunger axis Op, and the plungers 131 are juxtaposed so that the directions and heights of the restricting portions 133 coincide with each other.

  The shape of the limiting portion 133 is not limited as long as it can be in contact with the protruding portion 151, but in this embodiment, the limiting portion 133 is configured in a semicircular flange shape as shown in FIG.

  In addition, in the present embodiment, as shown in FIGS. 2 and 3, each plunger 131 regulates the rotation operation of the ring member 150 by contact with the projecting portion 151 so that the projecting portion 151 and the restricting portion 133 are separated. In order to align, the stopper fins 132a are used as rotation restricting portions.

  In the case of this embodiment, as shown in FIG. 3, by rotating the ring member 150, the side edges (hereinafter referred to as “projection part side edges”) 151a of the projections 151 are moved to the side surfaces of the stopper fins 132a (see FIG. Hereinafter, it is referred to as “fin side surface”).

  However, when the protrusion 151 comes into contact with the fin side surface f, if the remaining fin 132b different from the stopper fin 132a is present on the plunger 131 as in this embodiment, the remaining fin 132b may interfere with the protrusion 151.

  Therefore, in this embodiment, in order to avoid contact with the remaining fins 132b when the ring member 150 is rotated, an inner edge (hereinafter referred to as “projection part inner edge”) 151b formed in an arc shape is provided on the projection part 151. Yes. Specifically, the inner edge 151b is formed in an arc shape along a pitch circle having a radius r that surrounds the remaining fin 132b, as indicated by a one-dot chain line in FIG.

  According to this embodiment, as shown by the arrow in FIG. 3 (a), the ring member 150 provided on the syringe 110 is rotated so that the protrusion 151 is indicated by the symbol A in FIG. 4 (a). If the composite plunger is allowed to be pushed by shifting from the arbitrary limiting portion 133a to the position shown by the broken line, the protruding portion 151 is aligned in advance with the limiting portion 133b on the rear end side with respect to the limiting portion 133a. As indicated by reference numeral B in (b), the stroke amount for pushing the composite plunger 130 toward the tip (syringe) side is limited by the contact between the protruding portion 151 and the limiting portion 133b. That is, according to the present embodiment, it is possible to perform quantitative dispensing according to the arrangement interval ΔC of the restricting portion 133 simply by pushing the composite plunger 130 into the syringe 110.

  In addition, after that, the present invention shows that the protrusion 151 is formed by operating the reverse rotation of the ring member 150 in order to allow further pushing of the composite plunger 130 as shown in FIG. As indicated by reference numeral C in FIG. 4 (b), if the composite plunger 130 is allowed to be further pushed by shifting from the restricting portion 133b to the position indicated by the broken line, the restriction further on the plunger rear end side than the restricting portion 133b. Since the portion 133c is aligned with the protruding portion 151 in advance, even if the composite plunger 130 is pushed in again as shown by symbol D in FIG. Quantitative dispensing according to ΔC is possible.

  Therefore, according to the present embodiment, each time the ring member 150 is rotated, the content corresponding to the arrangement interval ΔC of the restricting portion 133 can be quantitatively poured out from each filling space R of the syringe 110 continuously. it can.

  Further, as in the present embodiment, if the restricting portions 133 provided on the plunger 131 are arranged at positions opposed to each other across the plunger axis Op, the syringe 100 according to the present invention can fill the filling space of the syringe 110. In addition to a single type dispenser having one R and a plunger 131, two filling spaces R of the syringe 110 are formed in parallel as in the same form, and pistons 120 arranged in each filling space R are provided. The present invention can also be applied to a double dispenser that enables synchronous operation by a composite plunger 130 in which the rear ends of two plungers 130 are integrally connected.

  In addition, according to this embodiment, the rotation of the plunger 131 having the restricting portion 133 to restrict the rotation operation of the ring member 150 by contact with the projecting portion 151 to align the projecting portion 151 and the restricting portion 133. By providing the stopper fin 132a as the restricting portion, the positioning between the protruding portion 151 and the restricting portion 133 is facilitated, which is convenient.

  In particular, in this embodiment, since the stopper fin 132a is used as the rotation restricting portion and an existing configuration is used, it is not necessary to provide a separate rotation restricting portion. Good.

  Furthermore, if the protrusion side edge 151a is brought into contact with the fin side surface f by the rotation operation of the ring member 150 as in this embodiment, the fin that spreads relatively widely as the area where the protrusion side edge 151a contacts. Since the side surface f is used, the projecting portion 151 is reliably stopped by contact with the stopper fin 132a, and the positioning of the projecting portion 151 and the limiting portion 133 can be realized with high reliability.

  Further, according to the present embodiment, when there is a remaining fin 132b different from the stopper fin 132a as in the same embodiment, the protrusion 151 has a circular shape to avoid contact with the remaining fin 132b when the ring member 150 rotates. By providing the arc-shaped inner edge 151b, the ring member 150 can be rotated without the protrusion 151 interfering with the remaining fin 132b as shown in FIG. 3 even if such a remaining fin 132b is present. Because it is possible, it is more convenient.

  FIGS. 5 (a) and 5 (b) are respectively a front view showing a partial injection syringe 200 according to the second embodiment of the present invention in a partial cross section, and an essential view showing it from the XX cross section and the YY cross section. FIGS. 6 (a) and 6 (b) are a perspective view and a cross-sectional view of the main part showing an operation part used for quantitative dispensing of the contents of the syringe 200, respectively.

  FIGS. 7A and 7B are a cross-sectional view showing the state when the ring member 150 is rotated from the rear end side of the syringe 200 and an enlarged view of a main part thereof. Further, FIGS. 8A to 8C are side views schematically showing the composite plunger 130 in order to explain each step when performing quantitative dispensing from the syringe 200. FIG. 7 is a ZZ cross section of FIG.

  In the following description, the same parts as those in the first embodiment have the same reference numerals, and the description thereof is omitted.

  The same amount of dispensing as in the first embodiment can be realized by arranging each plunger 131 to have a restricting portion 133 and arranging the restricting portions 133 of each plunger 131 so as to be staggered with respect to the adjacent plunger 131. Is done.

  More specifically, the composite plunger 130 of this embodiment has a limiting portion 133 at a position radially outward from the ring member center O of each plunger 131 as shown in FIG. 5 (a) and FIG. The plungers 131 are arranged side by side so that the directions and heights of the stroke amount limiting portions 130 of the plungers 131 are staggered.

  Further, as shown in FIGS. 6 and 7, each plunger 131 of this embodiment uses the remaining fin (hereinafter referred to as “stopper fin”) 132b as a rotation restricting portion when restricting the rotation operation of the ring member 150.

  When the projecting portion 151 is brought into contact, the projecting portion 151 is not brought into contact with the side surface of the remaining fin 132b, but a cantilever support piece 152 that can be elastically deformed and restored is integrally provided on the projecting portion 151. The cantilever support piece 152 is configured to be detachably engaged with the tip 132b (e) of the remaining fin 132b.

  However, also in this embodiment, when the ring member 150 is rotated, the radially outward fin 132a different from the stopper fin 132b may interfere with the protrusion 151.

  For this reason, in this embodiment, in order to avoid contact with the radially outward fins 132a in the rotation operation of the ring member 150, as in the first embodiment, as shown in FIG. The formed projecting portion inner edge 151b is provided, and the radially outward fin 132a is missing to the vicinity of its root.

  According to this embodiment, as shown by the arrow in FIG. 7 (a), the ring member 150 provided in the syringe 110 is rotated, so that the protruding portion 151 shown in FIG. If the composite plunger is allowed to be pushed by shifting to the position of FIG. (B), the protruding portion 151 is aligned in advance with the restricting portion 133b on the rear end side with respect to the restricting portion 133a. As shown by reference numeral B, the stroke amount for pushing the composite plunger 130 toward the tip (syringe) side is limited by the contact between the protruding portion 151 and the limiting portion 133b, as shown in FIG. 8 (c). That is, according to the present embodiment, it is possible to perform quantitative dispensing according to the arrangement interval ΔC of the restricting portion 133 simply by pushing the composite plunger 130 into the syringe 110.

  In addition, after that, as shown in FIG. 7 (a), the present invention operates by rotating the ring member 150 in a direction (in the same direction) to allow further pushing of the composite plunger 130. If the projecting portion 151 is shifted from the restricting portion 133b to the position shown by the broken line as shown by reference C in FIG. 8 (c) to allow further pushing of the composite plunger 130, the plunger is further increased than the restricting portion 133b. Since the restricting portion 133c on the rear end side is aligned with the protruding portion 151 in advance, even if the compound plunger 130 is pushed again in the direction indicated by the symbol D in FIG. Quantitative dispensing according to the arrangement interval ΔC of the restricting unit 133 is possible.

  Therefore, according to this embodiment, each time the ring member 150 is rotated, the content corresponding to the arrangement interval ΔC of the restricting portion 133 can be dispensed quantitatively from each filling space R of the syringe 110. .

  That is, as in this embodiment, even if each plunger 131 of the composite plunger 130 is provided with a restriction portion 133 and the restriction portions 133 are arranged so as to be staggered with respect to the adjacent plunger 131, the double-type injection Applicable to the ejector.

  Further, as in this embodiment, if the cantilever support piece 152 is provided on the projecting portion 151 and this cantilever support piece 152 is detachably engaged with the tip 132b (e) of the remaining fin 132b, it is used for engagement. In order to give a click feeling to a person, it can be made to recognize reliably that the protrusion part 151 and the restriction | limiting part 133 were positioned.

  Further, as the rotation restricting portion according to the present invention, in addition to the fin 132, as shown in FIGS. 9 (a) and 9 (b), an elastic tongue piece 153 that can be deformed and restored is formed on the ring member 150. The protrusion 153a provided on the elastic tongue 153 may be used as a rotation restricting portion so as to be detachably engaged with the recess 112 provided on the rear end portion 111 of the syringe 110 as shown in FIG.

  In this case, as in the case of providing the cantilever support portion 152 in the second form, the user is given a click feeling during the engagement, so that it is ensured that the protruding portion 151 and the limiting portion 133 are positioned. Can be recognized. Note that the relationship between the protrusion and the recess may be reversed between the syringe 110 and the ring member 150.

  FIGS. 10 (a) and 10 (b) are respectively a perspective view and a cross-sectional view of a main part thereof showing an operation part used for quantitative dispensing of the contents of the double-type syringe 400 according to the fourth embodiment of the present invention. is there.

  11 (a) and 11 (b) are cross-sectional views showing the state when the ring member 150 is rotated from the rear end side of the syringe 400, and FIGS. 12 (a) to 12 (c). FIG. 5 is a side view schematically showing the composite plunger 130 for explaining each step when performing quantitative dispensing from the syringe 400. 11 is a ZZ cross section of FIG.

  In the following description, the same parts as those in the other embodiments have the same reference numerals, and the description thereof is omitted.

  As with the second embodiment, the fixed quantity dispensing is realized by arranging each plunger 131 to have a restricting portion 133 and arranging the restricting portions 133 of each plunger 131 so as to be staggered with respect to the adjacent plunger 131. Is done.

  In this embodiment, as shown in FIGS. 10 and 11, a radially outward fin (hereinafter referred to as “stopper fin”) 132a is used to restrict the rotation operation of the ring member 150, as in the first embodiment. The rotation restricting section.

  However, in the present embodiment, as shown in FIG. 12, a slit S through which the protruding portion 151 can pass is formed in the stopper fin 132a at a portion adjacent to the restricting portion 133 on the tip side. That is, the slits S of the plungers 131 are also arranged so as to be staggered with respect to the adjacent plungers 131 as shown in FIG.

  According to the present embodiment, as shown by the arrow in FIG. 11 (a), the ring member 150 is rotated so that the protrusion 151 at the position of FIG. If the composite plunger 130 is allowed to be pushed by shifting to the position shown in b), as shown in FIG. 5B, the protruding portion 151 is aligned in advance with the limiting portion 133b on the rear end side with respect to the limiting portion 133a. Therefore, as shown by reference symbol A in the figure, the stroke amount when the composite plunger 130 is pushed toward the tip (syringe) side is, as shown in the figure (c), between the protruding portion 151 and the restricting portion 133b. Limited by contact. That is, according to the present embodiment, it is possible to perform quantitative dispensing according to the arrangement interval ΔC of the restricting portion 133 only by pushing the composite plunger 130 into the syringe 110.

  In addition, after that, as shown in FIG. 11 (b), the present invention operates the ring member 150 in a direction (in the same direction) or in a reverse direction to allow further pushing of the composite plunger 130. Thus, as shown by reference numeral B in FIG. 12 (c), the protrusion 151 is shifted from the restricting portion 133b to the position indicated by the broken line to allow further pushing of the composite plunger 130. Furthermore, since the restricting portion 133c on the rear end side of the plunger is aligned with the projecting portion 151 in advance, after the completion of one time of constant dispensing, the composite plunger 130 is moved again in the direction indicated by the symbol C in FIG. Even if it is pushed in, quantitative dispensing according to the arrangement interval ΔC of the restricting portion 133 is possible.

  Therefore, according to this embodiment, each time the ring member 150 is rotated, the content corresponding to the arrangement interval ΔC of the restricting portion 133 can be dispensed quantitatively from each filling space R of the syringe 110. .

  That is, if the slit S is formed in the stopper fin 132a and the projecting portion 151 is passed between the slits S as in the present embodiment, it is easy to use in order to give a degree of freedom to the rotation operation of the ring member 150. In particular, when the remaining fin 132b is present in the plunger 131 as in this embodiment, if the same slit is provided in the remaining fin 132b, the stopper member 151 does not interfere with the remaining fin 132b, and the ring member 150 is removed. Since it can be rotated, it is even easier to use.

  The above description shows the preferred embodiment of the present invention, but various design changes can be made according to the application. For example, according to the present invention, the individual elements described in each embodiment can be combined as appropriate according to the application.

(a), (b) is the front view which shows the double injection device which is the 1st form of this invention in a partial cross section, respectively, The principal part side view which shows it from a XX cross section and a YY cross section It is. (a), (b) is the perspective view and operation | movement principal part sectional drawing which respectively show the operation part used when dispensing the contents of the syringe quantitatively. (a), (b) is sectional drawing which respectively shows the state when rotating a ring member from the rear end side of the syringe. (a)-(c) is a side view which shows typically a compound plunger, in order to demonstrate each process at the time of performing fixed amount injection from the syringe. (a), (b) is the front view which shows the double injection device which is the 2nd form of this invention in a partial cross section, respectively, and the principal part side view which shows it from a XX cross section and a YY cross section It is. (a), (b) is the perspective view and operation | movement principal part sectional drawing which respectively show the operation part used when dispensing the contents of the syringe quantitatively. (a), (b) is sectional drawing which shows the state when a ring member is rotationally operated from the rear end side of the syringe, and its principal part enlarged view, respectively. (a)-(c) is a side view which shows typically a compound plunger, in order to demonstrate each process at the time of performing fixed amount injection from the syringe. (a), (b) is a perspective view showing a main part of a ring member employed as a rotation restricting portion of a double-type syringe as a third embodiment of the present invention, and is engaged with this in combination with a syringe. It is a principal part perspective view which shows the state made to do. (a), (b) is the perspective view and principal part sectional drawing which respectively show the operation part used when dispensing the content of the double injection device which is the 4th form of this invention. (a), (b) is sectional drawing which respectively shows the state when rotating a ring member from the rear end side of the syringe. (a)-(c) is a side view which shows typically a compound plunger, in order to demonstrate each process at the time of performing fixed amount injection from the syringe.

Explanation of symbols

100 double syringe
110 syringe
111 Syringe rear end
112 finger flange
120 piston
130 Compound Plunger
131 Plunger
132 Plunger fin
132a Radial outward fin
132b Remaining fin
133 Stroke restriction
140 Mixing nozzle
150 Ring member
151 Protrusion
151a Protruding part side edge
151b Protrusion inner edge
152 Cantilever support R Filling space S Slit

Claims (9)

A dispenser comprising a syringe having a filling space for filling the contents, a piston slidably disposed in the filling space, and a plunger for supporting the piston at the tip,
The syringe includes a ring member having an opening through which the plunger passes and rotatable around the plunger.
This ring member has a protrusion on its inside,
The plunger has a plurality of stroke amount restricting portions which are spaced along the axis thereof and come into contact with the protruding portion of the ring member in accordance with the pushing toward the distal end side and restrict the stroke amount.
When the ring member is rotated to allow the plunger to be pushed in, these stroke amount limiting portions are aligned in advance with the protruding portion on the plunger rear end side with respect to the protruding portion of the ring member. Even when the ring member is rotated to shift the protrusion of the ring member in order to limit the stroke amount accompanying the plunger push-in and subsequently allow the plunger to be further pushed, A dispenser capable of quantitative dispensing, wherein the dispenser is arranged repeatedly in sequence so as to be aligned with the protrusion on the rear end side of the plunger and limit the stroke amount associated with the subsequent pushing of the plunger.   2. The quantitative dispensing according to claim 1, wherein the plunger has a rotation restricting portion that restricts the rotation operation of the ring member by contact with the protruding portion and aligns the protruding portion and the stroke amount restricting portion. Dispenser.   The plunger according to claim 2, wherein the plunger has a plurality of fins projecting radially from the axis and extending along the axis, and the fin is used as a rotation restricting portion. Outer.   4. The quantitative injection according to claim 2, wherein the protrusion of the ring member has a cantilever support piece that detachably engages with the rotation restricting portion and aligns the protrusion and the stroke amount limiting portion. A dispenser that can be dispensed.   5. The dispenser capable of quantitative dispensing according to claim 2, wherein at least the rotation restricting portion has a slit for allowing the protruding portion of the ring member to pass therethrough. In Claim 2, the ring member comprises an elastic tongue piece,
The elastic tongue piece has a protrusion or recess that removably engages with a recess or protrusion formed on the syringe to align the protrusion and the stroke amount limiting portion, and the protrusion or recess is restricted from rotating. A dispenser capable of quantitative dispensing, characterized by being a part.   7. The quantitative dispensing according to any one of claims 1 to 6, wherein the stroke amount limiting portions are alternately arranged at positions facing each other across the center of the ring member. vessel.   In any 1 item | term of the Claims 1 thru | or 7, a dispenser forms one filling space in a syringe, and is a single type which can be operated by one plunger which connected the piston arrange | positioned in this filling space integrally. A dispenser capable of quantitative dispensing, wherein the plunger has a stroke amount limiting portion.   The dispenser according to any one of claims 1 to 7, wherein the dispenser forms a plurality of syringe filling spaces in parallel, and the pistons arranged in the filling spaces are respectively connected to the rear ends of the plurality of plungers. A dispenser capable of quantitative dispensing, wherein the compound plunger is a multiple type that allows a synchronous operation and has a stroke amount limiting portion in at least one plunger.

Images