JP2013095444A - Fixed quantity dispenser - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixed quantity dispenser capable of easily changing the amount of a content to be dispensed and having a simple constitution.SOLUTION: The dispenser includes: a dispenser body 2 which is arranged on an opening part of the container, and temporarily stores the content and dispenses it; a pushing-down head 3 provided so that it is freely movable downward under an upward biased condition in the dispenser body 2; and a stopper 4 movable up and down with the pushing-down head 3. The dispenser body 2 includes: a cylinder 5 in which the inner pressure is increased and decreased by the up and down movement of the pushing-down head 3; a sucking-up cylinder 6 which is arranged on an opening part, is continuously arranged with the cylinder 5, and switches communication and shutting down with the cylinder in accordance with the inner pressure of the cylinder 5; and a dispensing cylinder 7 which extends to the side from the cylinder 5, and switches communication and shutting down with the cylinder 5 in accordance with the inner pressure of the cylinder 5. The stopper 4 is provided with a contact recessed part 35 which can be brought into contact with the base end part 18 opposing from the lower side to the stopper 4 among the dispenser body 2.

Description

  The present invention relates to a quantitative dispenser.

Conventionally, as a quantitative dispenser, a cylinder that temporarily stores the contents to be dispensed, a piston rod that is provided in a downwardly biased state in the cylinder and that increases or decreases the internal pressure of the cylinder by moving up and down, and pulls up the piston rod An operation handle, a suction cylinder that is connected to the cylinder and disposed in the mouth of the container, and can be switched between communication and shielding with the cylinder according to the increase or decrease of the internal pressure of the cylinder, and directly connected to the cylinder to the side There is known a configuration including a dispensing cylinder that extends toward the cylinder and switches between communication and shielding with the cylinder in accordance with an increase or decrease in the internal pressure of the cylinder (see, for example, Patent Document 1).
In this quantitative dispenser, when the piston rod is pulled up using a lever, the inside of the cylinder becomes negative pressure, the suction cylinder communicates with the cylinder, and the contents are sucked into the cylinder from the suction cylinder. Then, the cylinder and the dispensing cylinder communicate with each other, and the contents sucked into the cylinder are poured out from the dispensing cylinder.

  A quantitative dispenser is required to repeatedly dispense an accurate amount. Therefore, in the fixed quantity dispenser described in Patent Document 1, a change member having a plurality of abutting step portions formed in a step shape in the axial direction of the fixed quantity dispenser is attached to the cylinder so as not to move up and down. ing. The changing member can be brought into contact with a locking piece provided on the outer peripheral surface of the lower end of the piston rod, and the abutting step portion is further moved upward by moving the piston rod into contact with the locking piece when the piston rod is moved upward. The amount of upward movement restricted by the changing member is changed by switching the abutting step portion that contacts the locking piece by rotating the changing member around the axis.

Japanese Utility Model Publication No. 6-28452

  However, the conventional quantitative dispenser has room for improvement with regard to making the configuration for changing the amount of the content to be dispensed easier. An object of this invention is to provide the fixed quantity dispenser which can change easily the quantity of the content poured out, and is simple in a structure.

  The present invention employs the following means in order to solve the above problems. That is, the quantitative dispenser of the present invention is arranged at the mouth of a container in which the contents are accommodated, the dispenser main body for temporarily accommodating and dispensing the contents, and the dispenser main body A push-down head that is movably moved downward in an upward biased state, and a stopper that is provided on the push-down head and moves up and down together with the push-down head, wherein the dispenser body moves the push-down head up and down. A cylinder in which an internal pressure is increased or decreased, a suction cylinder that is disposed in the mouth portion, is connected to the cylinder, and is switched between communication and shielding with the cylinder according to an increase or decrease in the internal pressure of the cylinder, and the cylinder An extraction cylinder that is connected directly to the cylinder and extends to the side, and can be switched between communication and shielding with the cylinder in accordance with an increase or decrease in the internal pressure of the cylinder. Out of the stopper Wherein the abutting step portion capable of contacting is provided on the counter portion facing the.

  In the present invention, since the pressing head is provided with a stopper having a contact step portion that restricts the downward movement of the pressing head by contacting the opposing portion when the pressing head is moving up and down, the amount of dispensing is reduced. The configuration to be changed is simplified. In this stopper, by selecting a state in which the contact stepped portion is opposed to the facing portion from above and the state in which the contact stepped portion is not regulated and the state in which the contact stepped portion is not regulated without being opposed to each other is selected. The downward movement amount of the pressing head is changed. Therefore, the downward movement amount of the pressing head can be changed without complicating the internal configuration of the cylinder and the pressing head.

In the quantitative dispenser of the present invention, it is preferable that a plurality of the contact step portions are provided so that positions in the vertical direction are different from each other along the circumferential direction of the pressing head.
In the present invention, the downward movement amount of the pressing head can be changed in multiple stages by changing the contact step portion that is opposed to the facing portion from above among the plurality of contact step portions.

In the quantitative dispenser of the present invention, the stopper and the pressing head are engaged with each other to determine relative positions in the circumferential direction, and a plurality of the contact step portions are arranged at the opposing portions. It is preferable that an engaging portion is formed in which one abutting step portion that can abut is determined.
In the present invention, the stopper is positioned in the circumferential direction with respect to the pressing head, whereby the circumferential alignment of the contact step portion opposed to the facing portion can be performed more reliably.

In the quantitative dispenser of the present invention, the stopper is a guide protrusion that extends downward from both circumferential end portions of each of the contact step portions and can sandwich the opposing portion from both sides. It is preferable that the part protrudes.
In the present invention, the downward movement of the pressing head by the stopper and the opposing portion is stably controlled by sandwiching the opposing portion between the pair of guide portions and guiding the stopper in the vertical direction.

In the metered dose dispenser of the present invention, the stopper may be formed with a deformable portion capable of bulging and deforming toward a portion of the dispenser body facing the stopper from the radially inner side. preferable.
According to the present invention, the pressing head is moved away from the dispenser body by bulging and deforming the deformed portion toward the radially inner side to reduce or eliminate the radial gap between the stopper and the dispenser body. Therefore, the stopper can be prevented from wobbling in the radial direction with respect to the dispenser main body when it is moved downward or when the contact step comes into contact with the opposing portion of the dispenser main body. Thereby, regulation by a contact step part can be performed more reliably, and the measurement accuracy of the amount of extraction improves.

  According to the quantitative dispenser according to the present invention, the stopper having the contact step for restricting the downward movement of the pressing head is provided on the pressing head, so that the internal configuration of the cylinder and the pressing head is not complicated. The downward movement amount of the pressing head can be changed.

It is a side view which shows the fixed quantity dispenser in 1st Embodiment of this invention. It is a top view which shows the fixed quantity dispenser of FIG. It is a side view which shows the fixed quantity dispenser in 2nd Embodiment of this invention. It is a top view which shows the fixed quantity dispenser of FIG. It is a side view which shows the fixed quantity dispenser in 3rd Embodiment of this invention. It is a fragmentary sectional side view which shows the fixed quantity dispenser in 4th Embodiment of this invention. It is a side view which shows the stopper of FIG. It is a reverse view which shows the stopper of FIG. It is a fragmentary sectional side view which shows the fixed quantity dispenser in 5th Embodiment of this invention. It is a side view which shows the stopper of FIG. FIG. 10 is a rear view showing the stopper of FIG. 9.

Hereinafter, 1st Embodiment of the fixed quantity dispenser by this invention is described based on drawing. In each drawing used in the following description, the scale is appropriately changed so that each member can be recognized.
The fixed quantity dispenser 1 in the present embodiment is disposed at the mouth of a container that contains the contents, and the dispenser body 2 that temporarily contains and dispenses the contents, and the dispenser body 2 The pressing head 3 is provided so as to be movable downward in the upward biased state, and the stopper 4 is attached to the pressing head 3 and moves up and down together with the pressing head 3.

The dispenser body 2 is directly connected to the cylinder 5 in which the internal pressure is increased or decreased by the vertical movement of the pressing head 3, the suction cylinder 6 connected to the cylinder 5 and disposed at the mouth, and the cylinder 5. And a pouring cylinder 7 extending toward the side. In addition, as a content accommodated in the said container, although a liquid with comparatively low viscosity is mentioned, for example like drink liquids, such as water and liquor, it is not restricted to a low viscosity liquid.
In the illustrated example, the pressing head 3, the cylinder 5 and the suction cylinder 6 are each arranged coaxially with the common shaft. Hereinafter, this common axis is referred to as an axis O, and along the direction of the axis O, the pressing head 3 side (upper side in FIG. 1) is the upper side, and the opposite side (lower side in FIG. 1) is the lower side. The direction of the axis O is the axial direction, the direction orthogonal to the axis O is the radial direction, and the direction around the axis O is the circumferential direction.

The cylinder 5 has a bottomed cylindrical shape. From the bottom surface of the cylinder main body 11, the protruding cylinder portion 12 protruding downward from the bottom surface of the cylinder main body portion 11, and the bottom surface of the cylinder main body portion 11. And a connecting tube portion 13 extending outward in the radial direction. A suction communication port (not shown) that communicates with the suction cylinder 6 is formed in the center of the bottom surface of the cylinder body 11, and the extraction is communicated with the connection cylinder part 13 at a position spaced radially outward from the center. A communication port (not shown) is formed.
A flange portion (not shown) that projects outward in the radial direction is formed at the lower end of the projecting cylinder portion 12, and a mounting cylinder portion 14 that is detachably screwed into the mouth portion is formed on the flange portion. Are engaged.
A dispensing valve (not shown) that switches communication and shielding between the cylinder 5 and the dispensing cylinder 7 in accordance with an increase or decrease in the internal pressure of the cylinder body 11 is provided inside the connecting cylinder 13. When the internal pressure of the cylinder main body 11 increases, the pouring valve is opened to communicate the cylinder 5 and the pouring cylinder 7, and when the internal pressure of the cylinder main body 11 decreases, the pouring valve is closed and the cylinder 5 and the pouring cylinder are closed. 7 is shielded.

The suction cylinder 6 has a cylindrical shape, and a base end is connected to the suction communication port formed on the bottom surface of the cylinder body 11, and extends downward from the cylinder body 11.
A suction valve (not shown) is provided inside the suction cylinder 6 to switch communication and shielding between the cylinder 5 and the suction cylinder 6 in accordance with increase or decrease of the internal pressure of the cylinder body 11. This suction valve is opened when the internal pressure of the cylinder body 11 decreases, and connects the cylinder 5 and the suction cylinder 6. When the internal pressure of the cylinder body 11 increases, the suction valve is closed and the cylinder 5 and the suction cylinder are closed. 6 is shielded.

  The dispensing cylinder 7 does not move up and down when the pressing head 3 and the stopper 4 are moved up and down, is connected to the connecting cylinder part 13 and extends toward the radially outer side, and a base end part 18. And a distal end portion 19 that gradually extends downward as it goes radially outward. When the stopper 4 is pushed down together with the pressing head 3 in a state where it is opposed to a selected one of a plurality of contact recesses 35 (described later) of the stopper 4 from below, the base end portion 18 contacts the contact recess 35. It is possible. Further, a spout 7A for pouring the contents is formed at the tip of the pour cylinder 7.

The pressing head 3 is attached to the upper end portion of the cylinder 5, and includes a pressing cylinder portion 21 having a top cylindrical shape and a piston portion (not shown) that can slide up and down along the inner peripheral surface of the cylinder main body portion 11. And.
The push-down cylinder portion 21 surrounds the outside of the upper end portion of the cylinder body 11 and moves up and down the cylinder body 11 as the push-down head 3 moves up and down. Further, the inner side of the pressing cylinder portion 21 extends along the axial direction, the upper end is in contact with the back surface of the top surface of the pressing cylinder portion 21, and the lower end is fixed to the cylinder main body portion 11. A spring (not shown) is arranged. Therefore, the pressing head 3 is disposed in the cylinder 5 in an upward biased state by the spring.
The piston portion hermetically closes the upper end portion of the cylinder body 11 in a state where the pressing head 3 is not pushed down, and forms a storage space inside the cylinder body 11.

The stopper 4 is attached to the push-down head 3 and includes an attaching portion 31 having a cylindrical shape with a top and a stopper main body portion 32 protruding downward from a part of the attaching portion 31. .
The lower end of the adherend portion 31 is positioned below the lower end of the pressing cylinder portion 21 of the pressing head 3 and covers the entire pressing head 3.
The stopper main body 32 includes a plate-like portion 33 that protrudes downward from the lower end of the adherend portion 31, and a plurality of contact protrusions 34 that protrude radially outward from the lower end of the plate-like portion 33. Have.

The plate-like portion 33 has a plate shape that is curved in an arc shape along the circumferential direction. A flat semicircular contact recess (contact step) 35 that is recessed upward is provided at the lower end of the plate-like portion 33 along the circumferential direction (three in FIG. 1 and FIG. 2). ) Is formed. The contact recess 35 is formed in accordance with the outer shape of the base end portion 18. In the present embodiment, the radius of curvature of the contact recess 35 is equal to the radius of the outer peripheral surface of the base end portion 18, and the contact recesses 35 are arranged at different positions along the axial direction.
The contact protrusion 34 has a flat semi-cylindrical shape, and protrudes radially outward from the edge of the contact recess 35. The curvature radius of the inner peripheral surface of the contact protrusion 34 is equal to the curvature radius of the contact recess 35. The abutting protrusion 34 is slightly inclined downward toward the radially outer side in accordance with the inclination of the base end portion 18.

  Next, a content dispensing method using the quantitative dispenser 1 configured as described above will be described. First, the mounting cylinder portion 14 is screwed into the mouth portion of the container in which the contents are accommodated, and the quantitative dispenser 1 is attached to the mouth portion of the container. Here, the stopper 4 is attached to the pressing head 3 so that one of the plurality of contact recesses 35 faces the base end 18 from above. Subsequently, the pressing head 3 and the stopper 4 are pushed down against the upward biasing force of the spring. When the pressing head 3 and the stopper 4 are pressed down, the contact recess 35 comes into contact with the base end 18 when the pressing head 3 and the stopper 4 are moved up and down, thereby restricting further downward movement of the pressing head 3. Since the shapes of the contact recess 35 and the contact protrusion 34 are matched to the outer shape of the base end portion 18, the pressing head 3 is further pushed down with the contact recess 35 in contact with the base end portion 18. At this time, the force applied to the contact recess 35 and the contact protrusion 34 is dispersed.

  When the pressing down of the pressing head 3 is released, the pressing head 3 is moved upward by the upward biasing force of the spring, and a negative pressure corresponding to the stroke amount of the pressing head 3 is generated in the storage space of the cylinder body 11. Let As a result, the suction valve arranged inside the suction cylinder 6 is opened, and the cylinder 5 and the suction cylinder 6 are communicated with each other, and the contents in the container are placed from the suction cylinder 6 into the cylinder body 11. Inflow. At this time, the above-described pouring valve disposed inside the connecting tube portion 13 is closed to shield the cylinder 5 and the pouring tube 7 from each other.

The inflow amount of the contents at this time corresponds to the negative pressure generated in the storage space, that is, the stroke amount. When changing the stroke amount, the stopper 4 is rotated around the axis O with respect to the pressing head 3, and the other contact recess 35 is opposed to the base end 18 from above. Thereby, the stroke amount is changed.
Further, since the lower end of the adherend portion 31 is formed at a vertical position that does not reach the base end portion 18 at the lowest position of the pressing head 3, the lower end portion of the adherend portion 31 where the plate-like portion 33 is not formed. When the pressing head 3 is pushed down with the base end 18 being opposed to the base end portion 18, it is possible to discharge by a full stroke. In the present embodiment, as shown in FIG. 2, the radially opposite side of the plate-like portion 33 in the stopper 4 is the lower end portion capable of full stroke.

After the contents have flowed into the cylinder body 11, when the push-down head 3 is pushed down again, the inside of the cylinder body 11 becomes positive pressure, the above-described dispensing valve of the connecting cylinder 13 is opened, and the cylinder 5 The contents in the cylinder main body 11 are poured out from the spout 7 </ b> A of the pour cylinder 7 in communication with the take-out cylinder 7. At this time, the suction valve is closed to shield the cylinder 5 and the suction cylinder 6. Therefore, the contents in the cylinder body 11 are not returned to the suction cylinder 6.
The contents are poured out as described above.

  As described above, according to the quantitative dispenser 1 in the present embodiment, the pressing head 3 is provided with the stopper 4 that regulates the stroke amount of the pressing head 3 by the plurality of contact recesses 35 that can contact the base end portion 18. Thus, it is possible to adopt a configuration in which the stroke amount of the pressing head 3 can be changed without complicating the internal configuration of the cylinder 5 and the pressing head 3.

  Next, 2nd Embodiment of the fixed quantity dispenser by this invention is described based on drawing. The embodiment described here has the same basic configuration as the first embodiment described above, and is obtained by adding another element to the first embodiment described above. Therefore, in FIG. 3 and FIG. 4, the same components as those in FIG. 1 and FIG.

The quantitative dispenser 100 in the second embodiment is different from the pressing head 3 and the stopper 4 in the first embodiment in that the shapes of the pressing head 101 and the stopper 102 are different.
As shown in FIGS. 3 and 4, a pair of positioning protrusions (engaging portions) 105 are formed on the top wall portion 104 of the pressing cylinder portion 103 of the pressing head 101 so as to sandwich the axis O in the radial direction. Yes. The pair of positioning protrusions 105 has an oval shape extending along a direction orthogonal to the extending direction of the extraction tube 7 in plan view.

A plurality of pairs of positioning hole portions (engaging portions) 108 that can be engaged with the pair of positioning protrusions 105 in the circumferential direction are provided on the upper wall portion 107 of the adherend portion 106 of the stopper 102 (FIG. 3). And three pairs in FIG. 4). The three positioning holes 108 have an oval shape in plan view like the positioning protrusion 105 and are formed corresponding to a plurality of contact recesses (contact step portions) 110 described later. Each pair of positioning hole portions 108 is formed at equal intervals in the circumferential direction. In this case, the same number of the positioning protrusions 105 may be formed so as to correspond thereto.
A plurality of (three in FIG. 3 and FIG. 4) semicircular contact recesses (contact step portions) 110 that are recessed upward are formed in the lower end edge of the stopper main body 109 along the circumferential direction. Yes.

  Also in the quantitative dispenser 100 having the above-described configuration, the contents are poured out in the same manner as the quantitative dispenser 1 in the first embodiment described above, but a pair of the three positioning hole portions 108 is paired. When one of the three contact recesses 110 is engaged, one of the three contact recesses 110 corresponding to the pair of positioning hole portions 108 faces the base end portion 18 of the dispensing cylinder 7 from above. Thereby, alignment of the circumferential direction of the contact recessed part 110 made to oppose the base end part 18 is performed.

  Further, when changing the stroke amount, the stopper 102 is rotated about the axis O in a state where the stopper 102 is slightly lifted to disengage the positioning hole portion 108 from the positioning projection 105, and a new top view is obtained. The pair of positioning hole portions 108 and the pair of positioning projections 105 corresponding to the selected contact recess 110 are aligned. Then, the stopper 102 is again attached to the pressing head 101, and the positioning hole 108 and the positioning projection 105 are engaged. Thereby, the newly selected contact recess 110 is opposed to the base end portion 18 from above.

  Such a quantitative dispenser 100 also has the same effect as the quantitative dispenser 1 in the first embodiment described above, but the positioning hole 108 corresponding to the desired contact recess 110 is formed with the positioning projection 105. By engaging and positioning the stopper 102 in the circumferential direction with respect to the pressing head 101, the circumferential alignment of the contact recess 110 that faces the base end portion 18 can be performed more reliably.

  Next, 3rd Embodiment of the fixed quantity dispenser by this invention is described based on drawing. The embodiment described here has the same basic configuration as the second embodiment described above, and is obtained by adding another element to the second embodiment described above. Therefore, in FIG. 5, the same components as those in FIGS. 3 and 4 are denoted by the same reference numerals, and the description thereof is omitted.

The quantitative dispenser 120 according to the third embodiment is different from the stopper 102 according to the second embodiment in that guide portions 123 are provided on both sides in the circumferential direction of the contact recess (contact step) 122 of the stopper 121. ing.
As shown in FIG. 5, the stopper main body 124 is formed with a plurality (three in FIG. 5) of semicircular contact recesses 122 that are recessed upward. And the guide part 123 which guides the stopper 121 to an axial direction is provided in the both ends which pinch | interpose the contact recessed part 122 of the stopper main-body part 124 in the circumferential direction.
The guide portion 123 extends downward from both sides of the contact recess 122 in the circumferential direction, and sandwiches the base end portion 18 in the circumferential direction.

In the quantitative dispenser 120 configured as described above, the contents are dispensed in the same manner as the quantitative dispensers 1 and 100 in the first and second embodiments described above, but the pressing head 3 and the stopper 121 are pushed down. Since the guide portion 123 sandwiches the base end portion 18 in the circumferential direction, a pair of guide portions 123 adjacent in the circumferential direction guide along the base end portion 18 between the pair of guide portions 123 in the axial direction. Is done. Thereby, the movement of the stopper 121 in the axial direction with respect to the base end portion 18 is stabilized.
Further, when changing the stroke amount, the stopper 121 is slightly lifted to separate the base end portion 18 from the lower end of the guide portion 123, and then the stopper 121 is rotated around its axis, so that the other contact recess 122 is moved from above. The stopper 121 is again attached to the pressing head 3 while facing the base end portion 18.

  Even in the quantitative dispenser 120 having such a configuration, the same effects as the quantitative dispensers 1 and 100 in the first and second embodiments described above are obtained, but the proximal end is provided between the guide portions 123 adjacent in the circumferential direction. Since the portion 18 is sandwiched, the movement of the stopper 121 in the axial direction relative to the base end portion 18 is stable, and the downward movement of the pressing head 3 by the stopper 121 and the base end portion 18 is stably regulated.

  Next, 4th Embodiment of the fixed quantity dispenser by this invention is described based on drawing. The embodiment described here is similar in basic configuration to the above-described third embodiment, and is obtained by adding another element to the above-described third embodiment. Therefore, in FIG. 6 to FIG. 8, the same components as those in FIG.

  As shown in FIGS. 6 to 8, the stopper main body 132 of the stopper 131 in the quantitative dispenser 130 according to the fourth embodiment is radially inward of the stopper 131 of the cylinder main body 11 of the dispenser main body 2. A deformable portion 133 is formed that can be bulged and deformed toward the opposite portion.

The deformable portion 133 is formed in a portion of the stopper main body 132 that is continuous with the contact concave portion (contact step portion) 134 from above, and has a crescent shape that opens downward as viewed from the outside in the radial direction. . And the deformation | transformation part 133 is thinner than the other part except this deformation | transformation part 133 among the stopper main-body parts 132. FIG.
Further, as shown in FIGS. 7 and 8, the deforming portion 133 bulges outward in the radial direction before the stopper 131 is attached to the pressing head 3, and as shown in FIG. After being attached to the pressing head 3, the deformed portion 133 is inverted and deformed so as to bulge radially inward. Thus, in the state where the deforming portion 133 is inverted and deformed, the radially inner end of the deforming portion 133 is located radially inward from the lower end edge of the push-down cylinder portion 21, Abut or close.

  In the quantitative dispenser 130 configured as described above, the contents are dispensed in the same manner as the quantitative dispensers 1, 100, and 120 in the first to third embodiments described above, but the deformable portion 133 is arranged in the radial direction. Since the deformation is reversed toward the inside, the gap between the radially inner surface of the stopper 131 and the radially outer surface of the cylinder body 11 is reduced or eliminated. Further, since the deformed portion 133 is thin and the deformed portion 133 is deformed radially inward from the outer peripheral edge of the deformable portion 133, the reverse deformed deformed portion 133 is swollen again toward the radially outer side. It becomes difficult to be deformed, and the reverse deformation shape of the deformation portion 133 is stabilized.

When the pressing head 3 and the stopper 131 are pushed down in this state, the radial distance between the stopper main body 132 and the cylinder main body 11 is small or disappears. When contacting the portion 18, the stopper 131 is less likely to wobble in the radial direction with respect to the dispenser body 2. Thereby, the push-down operation is stabilized.
It is also possible to use the deforming part 133 without bulging and deforming radially inward.

  The quantitative dispenser 130 having such a configuration also has the same effect as the quantitative dispensers 1, 100, and 120 in the first to third embodiments described above, but the deformable portion 133 bulges radially inward. By deforming, the radial interval between the stopper main body 132 and the cylinder main body 11 is reduced or eliminated, and the wobbling in the radial direction is suppressed, so that the restriction by the contact concave portion 134 is more reliably performed.

  Next, 5th Embodiment of the fixed quantity dispenser by this invention is described based on drawing. The embodiment described here has the same basic configuration as that of the above-described fourth embodiment, and is obtained by adding another element to the above-described fourth embodiment. Accordingly, in FIGS. 9 to 11, the same components as those in FIGS. 6 to 8 are denoted by the same reference numerals, and the description thereof is omitted.

In the stopper 141 of the quantitative dispenser 140 in the fifth embodiment, as shown in FIGS. 9 to 11, the deforming portion 142 is formed in a rectangular shape that is long in the circumferential direction when viewed from the outside in the radial direction.
The upper end edge of the deformable portion 142 is separated from the stopper main body 144 by a slit 143 extending in the circumferential direction, and the lower end edge of the deformable portion 142 is an abutting recess (abutting step portion) 145. The deformable portion 142 includes a pair of connecting wall portions 146 that are connected to each other in the circumferential direction and a knob portion 147 that is positioned between the pair of connecting wall portions 146.
The connecting wall portion 146 of the stopper main body 144 is formed thinner than the other portions excluding the connecting wall portion 146, and both end portions in the circumferential direction are stoppers via hinge portions 148 that are thinner than the connecting wall portion 146. The main body portion 144 is connected to the knob portion 147 other than the deformed portion 142.
The knob portion 147 protrudes radially outward from between the pair of connecting wall portions 146.

  Further, as shown in FIGS. 10 and 11, the deforming portion 142 is radially outward from other portions of the stopper main body 144 except for the deforming portion 142 in a state before the stopper 141 is mounted on the pressing head 3. As shown in FIG. 9, after the stopper 141 is attached to the pressing head 3, the deformed portion 142 is inverted and deformed so as to bulge inward in the radial direction. Thus, in a state where the deforming portion 142 is inverted and deformed, the end portion on the radially inner side of the deformable portion 142 is located on the radially inner side with respect to the lower end edge of the push-down cylinder portion 21, and Abut or close.

  The quantitative dispenser 140 having such a configuration also exhibits the same operations and effects as the quantitative dispenser 130 in the fourth embodiment described above.

In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, the cylinder has a connecting cylinder part to which the extraction cylinder is attached, but may have other configurations such as directly attaching the extraction cylinder to the cylinder body without providing the connection cylinder part.
The suction valve and the dispensing valve may be provided at other positions as long as the same operation and effect are obtained according to the increase and decrease of the internal pressure of the cylinder.

The stopper covers the entire pressing head, but may be configured to partially cover the pressing head. The stopper is attached to the pressing head, but may be attached to the pressing head by other methods as long as it can move in the axial direction together with the pressing head, or may be integrally formed at the lower end of the pressing head. .
The number of contact recesses formed is not limited to three, but may be one, two, or four or more. When only one contact recess is formed, as described above, the state where the contact recess is opposed to the base end portion and the downward movement is restricted by the contact recess, and the contact recess is the base end. The amount of downward movement of the pressing head is changed by switching to a state where the downward movement is not restricted by the contact concave portion without facing the portion.

  And although the contact recessed part is arrange | positioned so that the formation position may make step shape along the circumferential direction, if the formation position in an axial direction differs, it will not be restricted to step shape. Further, the abutting step portion is not limited to the semicircular concave portion but may be another shape such as a convex portion as long as the downward movement of the pressing head can be regulated by contacting the proximal end portion of the dispensing cylinder. Further, the facing portion is not limited to the base end portion of the dispensing cylinder, but may be another portion as long as it does not move up and down together with the pressing head and the stopper when the pressing head and the stopper move up and down.

Also in the first, third to fifth embodiments, as in the second embodiment, a plurality of pairs of positioning holes may be formed in the stopper and a pair of positioning protrusions may be formed in the pressing head. Further, the engaging portion formed in the stopper is not limited to the positioning hole portion, and may be a concave portion as long as it can be engaged with the positioning convex portion. Furthermore, a positioning convex part may be formed in the stopper, and a positioning hole part or a concave part may be formed in the pressing head. The shape of the engaging part is not limited to the convex part and the hole part or the concave part as long as it can engage with each other and align the contact step part with the opposing part in the circumferential direction. May be. Further, the formation position of the engaging portion is not limited to the upper surface of the stopper and the pressing head, and may be another location such as a side surface.
Similarly, in the first and second embodiments, similarly to the fourth and fifth embodiments, a deforming portion may be provided. Further, the shape of the deforming portion may be another shape, for example, a shape in which the knob portion is not provided as long as it can bulge and deform toward the radially inner side.
The deforming portion is formed in a portion of the stopper that faces the cylinder body portion of the dispenser body from the outside in the radial direction, but may be provided in a portion of the stopper that faces the dispenser body from the outside in the radial direction. The portion is not limited to the portion facing the cylinder body.
The deforming portion is formed in a portion that is continuous with the contact step portion from above, but may be formed in a portion that is shifted in the circumferential direction from the contact step portion.

  According to the present invention, industrial applicability is recognized for a quantitative dispenser that can easily change the amount of content to be dispensed and that has a simple configuration.

1,100,120,130,140 Metering dispenser, 2 dispenser body, 3,101 press head, 4,102,121,131,141 stopper, 5 cylinder, 6 suction cylinder, 7 dispensing cylinder, 18 Base end (opposite part), 35, 110, 122, 134, 145 Contact recess (contact step), 105 Positioning protrusion (engaging part), 108 Positioning hole (engaging part), 123 Guide Part, 134, 142 deformation part

Claims (5)

A dispenser body disposed at the mouth of a container in which the contents are stored, and temporarily storing and discharging the contents;
A pressing head provided on the dispenser body in an upwardly biased state so as to be movable downward;
A stopper provided on the pressing head and moving up and down together with the pressing head;
With
The dispenser body is
A cylinder whose internal pressure is increased or decreased by the vertical movement of the pressing head;
A suction cylinder disposed in the mouth, connected to the cylinder, and switched between communication and shielding with the cylinder according to an increase or decrease in the internal pressure of the cylinder;
A dispensing cylinder that is directly connected to the cylinder and extends sideways, and the communication and shielding with the cylinder are switched according to the increase or decrease of the internal pressure of the cylinder;
Have
The quantitative dispenser, wherein the stopper is provided with an abutting step portion capable of abutting on an opposing portion of the dispenser main body facing the stopper from below.   2. The quantitative dispenser according to claim 1, wherein a plurality of the contact step portions are provided so that positions in the vertical direction are different from each other along a circumferential direction of the pressing head.   The stopper and the push-down head each have a single contact step portion that can be brought into contact with the opposing portion of the plurality of contact step portions by determining a relative circumferential position by engaging with each other. The fixed amount dispenser according to claim 1 or 2, wherein a fixed engaging portion is formed.   The stopper is provided with a guide projection that extends downward from both ends in the circumferential direction of each of the contact step portions and can sandwich the facing portion from both sides. The quantitative dispenser according to any one of claims 1 to 3.   The said stopper is formed with the deformation | transformation part which can bulge and deform toward the part which faces the said stopper from the radial inside among the said extractor main bodies, The any one of Claim 1 to 4 characterized by the above-mentioned. 1. A quantitative dispenser according to item 1.

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