JP4919263B2 - Pressing head - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a push-down head improved so as to always perform the stable ejection of a liquid by fitting a main body A<SB>2</SB>, that has a valve member A<SB>3</SB>and a lever member A<SB>4</SB>, to the mounting member A<SB>1</SB>mounted on the upper end part of a stem 21 erected so as to be pushed in an upward energizing state, having good liquid drainage, facilitating push-down at the time of ejection of the liquid, smoothly performing the operation of the main body A<SB>2</SB>including the valve body and not having trouble that a jet orifice 47 is set to an open state. <P>SOLUTION: A communication cylinder 35, which is erected so as to communicate with the inside of the stem 21 through a first variable wall 34, is provided to the connection member of the mounting member A<SB>1</SB>and the main body A<SB>2</SB>while a second variable wall 60 is provided between the outer periphery of the intermediate part in the forward and rearward direction of the valve members A<SB>3</SB>and the inner periphery of a valve chamber R to demarcate the valve chamber before and behind and the part movable in a form of a slide surface with a piston in a liquidtight state is eliminated. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a pressing head, and more particularly, it constitutes a part of a dispenser, and the dispenser that is mounted has good liquid drainage after ejection, there is no clogging in the pressing head, and it is easy to push down when ejecting liquid Further, the present invention relates to a pressing head that is easy to handle.

  As a dispenser, a fitting cap is fitted to the mouth and neck of the container body and attached to the container body, and a pressing head is fitted to the upper end of the stem protruding so as to be able to be pushed upward in the upward biased state of the mounting cap. Are known. Further, as a pressing head for these dispensers, a mounting cylinder member provided with a sliding cylinder communicating with the inside of the stem, and a valve chamber having an outlet at the tip above the cylinder cylinder fitted to the outer periphery of the sliding cylinder A valve body that is provided so as to be able to be pressed down with respect to the mounting cylinder member, a valve member that closes the ejection port in a forward-biased state, and that defines a flow path from the inside of the cylinder cylinder to the ejection port, and a valve member And a specially-configured eaves member that is linked to the valve and opened by pushing down the head has been proposed. (For example, see Patent Document 1)

A dispenser equipped with such a pressing head can stably eject liquid at all times, has good liquid drainage, has excellent sealing performance at the ejection port, can be easily pushed down, and is stable for long-term use. It is an excellent one that can eject the liquid.
JP 2002-326044 A

  A dispenser provided with such a pressing head exhibits the above-mentioned specific effects, but it slides with a sliding cylinder and cylinder cylinder that slide in the vertical direction, or with a skirt portion of the valve member that slides in the front-rear direction. Since the moving surface or the saddle member whose upper part swings in the front-rear direction and lower part moves together, it slides on the sliding part between the sliding cylinder and the cylinder cylinder and the sliding part on the skirt part of the valve member. A force is likely to be applied in a direction different from the moving direction, and as a result, there is a risk of causing a sliding failure and hindering smooth operation of each member. For this reason, silicon oil or the like is applied to the sliding surface to improve it, but inconveniences such as an increase in material costs and an application process occur.

  The present invention is a further improvement of the above-mentioned special-type pressing head, which can operate a smooth member, eliminate the step of applying a lubricant, and always stably eject liquid and run out of liquid. The present invention proposes a pressing head capable of exhibiting effects such as good quality, good sealing at the jet nozzle, easy depression of the head, and durability.

  The pressing head of the present invention is used in a dispenser having a stem projecting so as to be pressed down in an upwardly biased state from the upper end, and is used by being fitted to the upper end of the stem. The dispenser can be used as long as the stored liquid is ejected from the stem by pushing down the stem. For example, the dispenser has a general pump structure including a cylinder and a piston, or an aerosol type. Things can be adopted.

  The pressing head of the present invention includes a mounting member, a main body, a valve member, and a flange member.

  The mounting member is fitted and fixed to the upper end of the stem to allow the inside of the stem and the valve chamber of the main body to communicate with each other in a liquid-tight manner so that they can move up and down with respect to each other. Structurally, a connecting cylinder that communicates the inside and the inside of the stem via a flexible first variable wall is provided upright at the center of the support top plate supported above the stem. Therefore, as a form for supporting the support top plate above the stem, a sealed space that communicates the inside of the stem and the inside of the connecting cylinder may be formed between the stem and the support top plate. Moreover, a support top plate supports the lower end part of the eaves member on the upper surface, and a contact site comprises the power point of an eaves member. Moreover, you may give the role which assists the smooth vertical motion of a main body. That is, the outer peripheral edge of the support top plate is configured as a guide edge for guiding the inner periphery of the peripheral wall of the main body. For example, the outer peripheral surface of the peripheral wall provided vertically from the outer peripheral edge may be in a state where a slight gap is left between the inner peripheral surface of the main peripheral wall.

  The first variable wall is for moving the connecting cylinder up and down with respect to the support top plate. For example, the first variable wall is annular and has a stepped shape that spreads downward, or an annular shape that is recessed inward in a horizontal U shape. Various shapes can be adopted as long as the above requirements are satisfied. The first variable wall may be elastic or may be flexible enough to make the connecting cylinder self-supporting.

  The main body is mounted on the mounting member via a connecting cylinder, and is formed of a synthetic resin or the like. The main body communicates with the inside of the connecting cylinder, and has a valve chamber having an opening at the front end with an opening at the front end, and is mounted so that the first variable wall can be pushed down. As its basic form, it has a cylindrical shape with a lower end opening formed by extending the top wall from the upper edge of the peripheral wall. There is an example in which a spout member is fitted to the inside of the horizontal cylinder so as to define the inside of the horizontal cylinder as a valve chamber, and a fitting cylinder that is communicated with the inside of the horizontal cylinder on the lower surface of the horizontal cylinder and is fitted to the connecting cylinder. In that case, a space in which the flange member can swing is provided at the rear portion of the horizontal tube or on both sides of the cylinder tube. Further, it is preferable that the peripheral wall is guided to the outer peripheral edge of the mounting member so as to be movable up and down and can be pushed down with respect to the mounting member.

  The valve member is formed of a synthetic resin, an elastomer, or the like, and divides the valve chamber by extending a second variable wall between the outer periphery and the valve chamber periphery. Similarly to the first variable wall, the second variable wall can be deformed in accordance with the longitudinal movement of the valve member and can define a flow path to be described later. For example, a ring-shaped stepped rearward shape is adopted. It can also be elastic or flexible with poor rigidity. Further, the valve member is configured to be urged forward by a coil spring or the like so as to close the jet outlet at the tip portion so as to be opened and closed. And the flow path from the inside of a connection cylinder to a jet nozzle is defined with the said 2nd variable wall. The flow path is the valve chamber front portion of the outer peripheral portion of the valve member defined by the second variable wall, and reaches from the connecting cylinder to the jet port through the outer periphery of the valve member. The rear end portion of the valve member protrudes from the horizontal tube and is linked to the flange member.

  The eaves member is also made of synthetic resin or the like, and the upper end is linked to the rear end of the valve member protruding from the rear of the horizontal cylinder, and the lower end is brought into contact with the upper surface of the support top plate so that when the main body is pushed down against the mounting member It is pivotally attached to the main body so as to be swingable as it is pulled out. Various shapes can be employed as long as the above requirements are satisfied, but the embodiment shown in the figure can be preferably employed.

The first means is configured as follows. In other words, the pressing head is mounted on the stem 21 standing upright so as to be able to be pushed in an upward biased state. The pressing head is fitted and fixed to the upper end of the stem 21 and the first variable wall from the center of the support top plate 33 supported above the stem 21. A mounting member A ₁ erected with a communication cylinder 35 communicating with the inside of the stem 21 through the interior 34 and a valve chamber R communicating with the interior and the interior of the communication cylinder 35 and having an outlet 47 at the front end are connected to the communication cylinder 35. A _second body is provided between the body A ₂ provided above and capable of being pushed down by deforming the first variable wall 34 with respect to the mounting member A ₁ , and the inner periphery of the valve chamber R and the outer periphery of the intermediate portion in the front-rear direction. A valve member that stretches the variable wall 60 and divides the front and rear of the valve chamber, closes the outlet 47 in a forward-biased state, and defines a flow path from the connecting cylinder 35 to the outlet 47 and a _3, together to coordinate the upper to the rear end of the valve member a _3, was locked contact engagement the lower end to the support top plate 33 top surface, and, instrumentation And a lever member A ₄ which is pivotally connected to swingably body A ₂ as withdrawing the valve member A ₃ during depression of the body A ₂ rearward relative to member A _1, the body A ₂ depression drag stem 21 against the stem 21 The peripheral wall 40 of the main body A ₂ is guided to be movable up and down on the outer periphery of the mounting member A ₁ .

  The second means is configured as follows. That is, in the first means, the first variable wall 34 is annular and has a stepped shape extending downward.

As mentioned above has been described pressing head of the present invention, since there is no sliding portion between the sliding portion and skirt portion and the sliding surface of the conventional such sliding cylinder and the cylinder tube, the longitudinal movement of the valve member A ₃ It is possible to carry out more smoothly, and it is possible to reliably prevent inconveniences such as the jet outlet being open and not closing. In addition, the liquid breaks off after the liquid is ejected, there is no risk of clogging or solidification in the head, and it can be easily ejected without being hardened even though the ejection port is closed. it can. Moreover, since it can be used irrespective of the form of the dispenser, etc., it is excellent in versatility and can be applied to many types of dispensers. Further, since the valve member is opened and closed by the eaves member, it is excellent in durability and can always be operated stably over a long period of time. In addition, the number of members can be reduced as much as possible, and there is a merit of cost reduction, and at the same time, the assembling can be simplified. Further, even if an inconvenience, such as emergency deformation of the first variable wall 34 body A ₂ is tilted in heterogeneous, it can be performed reliably corrected to smooth vertical movement of the body A ₂ it.

Further, in the depression head of the second unit, capable straighter the depression of the contact tube 35 deformation of the first variable wall 34 at the time of depressing the body A ₂ is performed in substantially regularly.

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

  FIG. 1 shows a liquid ejection container, and the liquid ejection container 1 is composed of a container body 2 and a dispenser 3. The container body 2 is made of synthetic resin with the mouth and neck 11 standing from the body 10. The dispenser 3 is fitted to the container body 2 with the mounting cap 20 fitted to the neck 11, and a stem 21 is protruded above the mounting cap 20 so as to be able to be pushed in an upward biased state. The pressing head A is fitted. A discharge valve 22 is provided in the upper part of the stem 21.

In pressing head A to the present invention includes a mounting member A _1, a main body A _2, and includes a valve member A _3, and a lever member A _4.

The mounting member A ₁ is a bottom plate 31 and extends outwardly from the lower end of the mounting tube 30 which is fitted on the outer peripheral upper end portion of the stem 21, the peripheral wall 32 erected upward from the peripheral edge of the bottom plate 31, further A support top plate 33 is extended above the stem 21 on the inner side from the upper end edge of the peripheral wall 32. A connecting cylinder 35 that communicates the inside and the inside of the stem 21 is provided upright via a first variable wall 34 having a lower end opened at the center of the support top plate 33. The first variable wall 34 is annular and has a stepped shape with an expanded base. In the illustrated example is integrated fitted and constitutes a mounting member A ₁ in the lower member A _1a and the upper member A _1b. The lower member A _1a includes a mounting cylinder 30 and a bottom plate 31, and a fitting cylinder portion 36 for fitting the peripheral wall 32 to the peripheral edge portion of the upper surface of the bottom plate 31 is provided upright. The upper member A _1b includes a peripheral wall 32 that is closely fitted to the outer periphery of the fitting cylinder portion 36, a support top plate 33, a first variable wall 34, and a connecting cylinder 35.

The main body A ₂ has a cylindrical shape with a lower end opening formed by extending the top wall 41 from the upper end edge of the peripheral wall 40, and a horizontal cylinder 42 having a front end opened at the front of the peripheral wall 40 is integrally extended rearward. Further, a fitting cylinder 43 that is liquid-tightly fitted to the outer periphery of the connecting cylinder 35 is suspended from the lower surface of the horizontal cylinder 42. The horizontal cylinder 42 has a cylindrical shape with a front end opening in which a through hole 44 for projecting a valve member is formed in the rear wall 42a, and a communication hole 45 that communicates with the inside of the fitting cylinder 43 is formed in the lower part. A spout member 46 is fitted to the tip of the horizontal cylinder 42, and the inside is formed in the valve chamber R. The spout member 46 has a front end projecting from the front end of the horizontal cylinder 42 tapered to open a spout 47 at the front end, and a plurality of circumferential ribs 48 projecting from the front part of the inner surface. A mounting plate 49 is fitted directly under the horizontal cylinder 42. Mounting plate 49 is fitted to the periphery to the inner periphery of the peripheral body wall 40, the fitting tube 43 is penetrated suspended at the central portion, window holes 50 for protruding the swingable lever member A ₄ at the rear Further, bearings 51 are vertically provided on both sides of the window hole 50. The connecting cylindrical 35 fitting tube 43 is fitted on the outer periphery, wearing the body A ₂ to the attachment member A ₁ and vertically the lower inner periphery of the peripheral body wall 40 to be vertically movable in the mounting member the peripheral wall 32 the outer periphery . An engaging protrusion 52 that engages with the peripheral edge of the lower surface of the mounting member A ₁ and prevents the main body A _{2 from} coming off is provided around the inner peripheral lower portion of the main body peripheral wall 40.

The valve member A ₃ has a horizontal bar shape, the front end is pressed against the ejection port 47 and is closed, and the rear end is projected from the through hole 44 for projecting the valve member. A second variable wall 60 that partitions the front and rear of the valve chamber R is provided. Second variable wall 60 forms a and with annular to extend from the tip end of the fitting cylinder 61 which is fitted within the circumferential rear end of the horizontal tube 42 stepwise extending rearward, the front and rear inner peripheral edge of the valve member A ₃ It is fixed in a liquid-tight manner in the middle part of the direction. As a result, a liquid flow path from the communication tube 35 to the ejection port 47 via the communication hole 45 is defined. Further, it is biased forward by a coil spring s interposed between the front surface of the rear wall 42a of the horizontal cylinder 42 and the connecting portion of the second variable wall 60. Further, the rear end portion projects from the through hole 44 for projecting the valve member, and an annular recess 62 for engaging the flange member is formed in the projecting portion.

Lever member A _4, together to coordinate the upper end the valve member A ₃ rear portion, a lower portion and abutting engagement thereby locked to the support top plate 33 top surface of the mounting member A _1, The main body A for the mounting member A ₁ are swingably pivoted as withdrawing the valve member a ₃ rearward at the time of the _second depressed. The eaves member A ₄ has a bifurcated inclined plate portion 71 extending forward from a lower end portion of the vertical plate portion 70 whose upper end portion is linked to the rear end portion of the valve member A ₃ , and the lower end portion of each inclined plate portion 71 Are brought into contact with and locked to the upper surfaces of the support top plates 33 on both sides of the fitting cylinder 43. As for the linkage between the flange member A ₄ and the valve member A ₃ , the annular recess 62 of the valve member A ₃ is fitted into a notch 72 provided at the center of the upper end of the vertical plate 70. A concave portion having a rectangular shape when viewed from the front is provided at the rear upper end portion of the vertical plate portion 70, and a notch portion 72 communicating with the concave portion is formed in front of the concave portion. Further, pivot shafts 73 projecting on both sides of the refracting portion are pivotally mounted on bearings 51 on both sides, respectively.

Then, and to bias the linkage portion of the upper vertical plate portion 70 to always forward by the valve member A ₃ which are forwardly urged by the coil spring s, by depression of the body A _2, to deform the first variable wall 34 When the connecting cylinder 35 is pushed down, the support top plate 33 of the mounting member A ₁ pushes up the inclined plate portion 71 to rotate the flange member A ₄ , and the valve member A ₃ is moved backward against the forward biasing force of the coil spring s. It is configured to pull out.

In the present invention, in the such a pressing head, it is constructed such that the depressed drag body A ₂ is smaller than the depressing force of the stem itself relative to the stem 21. To configure in this manner, essentially than the elastic force of the elastic member for biased upwardly stem 21 of the dispenser to be mounted, the coil spring s for biasing the valve member A ₃ forward The elastic force may be selected to be small, and the elastic force of the first variable wall 34 and the second variable wall 60, the frictional force at the time of swinging of the flange member, and the like may be selected.

Pressing head A constructed as described above, depressing the pressing head A from the state of FIG. 1, for better depression force of the stem 21 itself is larger than the drag depressed relative to the stem 21 of the body A _2, the first stem 21 is not lowered The main body A ₂ is lowered with respect to the mounting member A ₁ . At this time, the lower end portion of the lever member A ₄ is pushed up to the support top plate 33 top surface of the mounting member A ₁ rotates about the pivot axis 73, the valve member A ₃ to pivot the upper end to the rear The nozzle 47 is moved backward against the resilient force of the coil spring s, and the jet 47 is opened. Next, the stem 21 descends, and as the stem descends, the liquid in the dispenser passes from the stem 21 through the connecting tube 35 and is ejected from the communication hole 45 to the outside through the flow outlet 47 through the flow path.

Now releases the pressing of the pressing head A, the body A ₂ is raised by the upward biasing force of the first stem. In this case, for example, increase of the stem 21 before it away hand presses the body A ₂ top is performed, spout 47 is performed in a state open. Therefore, at this time, the inside of the valve chamber R is in a negative pressure state. Next, there is room for releasing the hand, and the valve member A ₃ moves forward by the elastic force of the coil spring s to close the ejection port 47, and accordingly, the main body A ₂ is attached to the mounting member A ₁ by the flange member A _4. On the other hand, it is pushed upward to return to the original state.

  FIG. 2 shows another example, and in this example, an example is shown in which a first variable wall 34 having a cylindrical shape recessed inwardly in an arc shape is provided. Other configurations are the same as those in the example of FIG.

It is a longitudinal cross-sectional view of this invention pressing head. Example 1 It is a longitudinal cross-sectional view of this invention pressing head. (Example 2)

Explanation of symbols

1 ... Liquid ejection container 2 ... Container body
10 ... trunk, 11 ... mouth and neck 3 ... dispenser
20 ... Installation cap, 21 ... Stem, 22 ... Discharge valve A ... Pressing head
A ₁ … mounting member (A _1a … lower member, A _1b … upper member)
30 ... Installation cylinder, 31 ... Bottom plate, 32 ... Peripheral wall, 33 ... Support top plate, 34 ... First variable wall,
35… Communication tube, 36… Fitting tube
A ₂ ... Body
40 ... peripheral wall, 41 ... top wall, 42 ... horizontal cylinder, 42a ... rear wall, 43 ... fitting cylinder,
44 ... Through hole for projecting valve member, 45 ... Communication hole, 46 ... Jet member, 47 ... Jet,
48 ... Rib, 49 ... Mounting plate, 50 ... Window hole, 51 ... Bearing, 52 ... engaging protrusion R ... Valve chamber
A ₃ … Valve member
60 ... second variable wall, 61 ... fitting cylinder, 62 ... annular recess, s ... coil spring
A ₄ …
70 ... Vertical plate, 71 ... Inclined plate, 72 ... Notch, 73 ... Pivoting shaft

Claims (2)

A pressing head to be mounted on the stem (21) which is depressible erected above biasing condition, the stem (21) with is fitted fixed to the upper end, the stem (21) supporting the top plate which is supported above (33) Central a part from the first variable wall system (21) via (34) in the interior communicates connecting cylindrical (35) mounting members provided upright (a _1), communicates the inside and the connecting cylindrical (35) in , together comprise spout (47) an open valve chamber (R) to the connecting cylindrical (35) above the front end, depression of by deforming the mounting member (a ₁₎ with respect to the first variable wall (34) A _second variable wall ( 60 ) is stretched between the main body ( A ₂ ) provided and the inner periphery of the valve chamber ( R ) and the intermediate portion in the front-rear direction. A valve that closes the jet port ( 47 ) in a biased state and defines a flow path from the inside of the connecting cylinder ( 35 ) to the jet port ( 47 ). The upper end is linked to the rear end of the member ( A ₃ ) and the valve member ( A ₃ ) , the lower end is brought into contact with and locked to the upper surface of the support top plate ( 33 ) , and the main body with respect to the mounting member ( A ₁ ) (a ₂₎ depressed when a lever member pivotally mounted valve member (a ₃₎ to swingably body (a ₂₎ as drawn out backward (a ₄₎ to the main body relative to the stem (21) (a ₂ ) of depressed drag is composed as is smaller than the stem (21) depressed drag itself, the mounting member (a ₁₎ periphery in the main body (a ₂₎ of the peripheral wall (40) by comprising vertically movable by guiding the Press head characterized by. The pressing head according to claim 1, wherein the first variable wall ( 34 ) is annular and has a stepped shape extending downward.

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