JP5443036B2 - Opening and shutting type ejection head - Google Patents

Description

  The present invention relates to an open / close-type ejection head that has good liquid drainage after ejection of the content liquid and is unlikely to cause dripping or clogging.

  The opening / closing type ejection head includes a head main body that has an injection port that communicates with the inside of the container and drives a pump disposed inside the container; A pin member that can be moved sideways in the head body and can be opened and closed, and a pin member that is disposed between the pin member and the head body to bias the pin member toward the jet port. There exists what has an elastic member to seal (for example, refer to patent documents 1).

Japanese Patent No. 3842957

  However, the above-described openable jet head has a mechanism for causing the pin member to move forward and backward as the head body moves up and down between the joint and the head body. This mechanism is a mounting plate that is assembled to the head body, and a flange member having an L-shaped cross section that is rotatably assembled to the mounting plate. Therefore, there is room for improvement in the conventional open / close type ejection head in terms of reducing the number of parts.

  In addition to assembling the flange member to the mounting plate, the above mechanism requires that one end of the flange member be assembled to the rear end of the pin member in addition to assembling the mounting plate to the head body. There is room for improvement.

  The problem to be solved by the present invention is to provide an open-and-close type ejection head that saves parts and improves the assembly work efficiency, has good liquid drainage after ejection of the content liquid, and is unlikely to cause dripping or clogging. There is.

The opening / closing type ejection head according to the present invention includes a head body that has an injection port that communicates with the inside of the container and moves a stem disposed inside the container up and down, and holds the head body up and down so that the head body can be moved up and down. A joint member coupled to the head body, a pin member that is laterally disposed in the head body so as to be movable back and forth, and capable of opening and closing the ejection port, and disposed between the pin member and the head body to bias the pin member toward the ejection port side. And an opening / closing type ejection head having an elastic member for sealing the ejection port, wherein a support wall standing from the joint is provided on the rear side of the joint, and the pin member is allowed to move up and down at the tip of the support wall. The notch is formed, and the rear end of the pin member is moved backward as the pin member descends along the notch by pressing down the head main body at the two tip portions forming the notch. And forming an inclined surface to retract the pin member by causing headed sliding, provided on the front surface of the support wall, the downward movement of the head body against the joint, of the partition walls forming the configuration space of the pin member in the head body The protrusion that can contact the partition wall through which the rear end of the pin member passes, and the partition wall that is provided in the head body and forms the arrangement space of the pin member, the partition wall through which the rear end of the pin member passes, It is characterized by comprising at least one of the protrusions that can come into contact with the front surface of the tip portion of the support wall by the downward movement of the head main body with respect to the joint .

  According to the present invention, the support wall can be configured integrally with the joint. Moreover, according to this invention, a support wall can also be comprised separately from the joint.

  In addition, according to the present invention, the partition wall in which the rear end of the pin member penetrates among the partition walls that form the arrangement space of the pin member in the head body by the downward movement of the head body with respect to the joint on the front surface of the support wall. The protrusion part which can contact with can be provided. Further, among the partition walls forming the pin member arrangement space in the head body, the partition wall through which the rear end of the pin member penetrates can contact the front surface of the front end portion of the support wall by the downward movement of the head body with respect to the joint. Protrusions can be provided.

  Furthermore, according to the present invention, the head main body can be provided with a protrusion that can be inserted into the notch formed in the support wall as the head main body is pushed down.

  According to the present invention, when the head body is lowered with respect to the joint by pushing down, the pin member arranged in the head body descends along the notch formed in the support wall rising from the joint, and thereafter It moves backward as the end slides along the inclined surface. As a result, the head main body is pushed down with respect to the joint by being pushed down, and at the same time, the ejection port of the head main body is opened by the pin member moving backward against the urging force of the elastic member.

  According to the present invention, when the depression of the head body is released, the pin member slides along the notch while its rear end slides along the inclined surface formed on the support wall by the urging force from the elastic member. Rise. As a result, the head main body is pushed up with respect to the joint by releasing the depression, and returns to the initial position. At the same time, the injection hole of the head main body is ejected by the urging force of the elastic member. It is sealed by being urged by the mouth.

  As a result, according to the present invention, as in the prior art, it is possible to provide an open / close-type ejection head that is good in running out of liquid after ejecting the content liquid and hardly causes dripping or clogging.

  Further, according to the present invention, the pin member can be assembled so as to move forward and backward with the vertical movement of the head body simply by inserting the pin member disposed in the head body into the notch formed in the support wall. . That is, according to the present invention, a mechanism that has been conventionally interposed between the head main body and the joint becomes unnecessary. Further, since such a mechanism becomes unnecessary, the assembly process can be simplified without going through a complicated process for assembling the mechanism.

  Therefore, according to the present invention, the number of parts is reduced and the assembly work efficiency is improved as compared with the conventional case. In addition, production costs and manufacturing costs can be reduced by reducing parts and improving assembly work efficiency.

  That is, according to the present invention, parts can be saved and the assembly work efficiency can be improved. Moreover, the cost can be improved, the liquid can be drained well after the liquid content is ejected, and the open-and-close type ejection is less likely to cause dripping or clogging. A head can be provided.

  In the present invention, if the support wall is formed integrally with the joint, it is more effective for saving parts and improving assembly work efficiency. On the other hand, if the support wall is configured separately from the joint, for example, considering the sealing property with the head body, a relatively flexible material is used for the connecting portion with the head body. In the case of using a relatively high rigidity (strength) as the material of the support wall in consideration of the urging force from the elastic member through the pin member, the joint and the support wall have an effect opposite to each other. It is effective when trying to do so.

  In addition, the support wall protrudes on the front surface of the partition wall, which forms an arrangement space for the pin member in the head body by the downward movement of the head body with respect to the joint, and can contact the partition wall through which the rear end of the pin member passes. If the portion is provided, the support wall is tilted forward due to the pulling force from the compressed elastic member as the pin member moves backward, and the injection port is not opened because the pin member does not move backward, It is possible to prevent a phenomenon that a desired amount cannot be dispensed because the member is not sufficiently retracted. Thereby, opening and closing of the injection port by a pin member can be performed reliably.

  Along with the above configuration or alone, among the partition walls forming the pin member arrangement space in the head body, the tip portion of the support wall is moved down to the partition through which the rear end of the pin member penetrates by the downward movement of the head body relative to the joint. If the protrusion that can contact the front surface of the pin member is provided, the support wall tilts forward due to the pulling force from the elastic member compressed as the pin member moves backward, so that the pin member does not move backward, thereby Phenomenon such as not being opened can be prevented. Thereby, opening and closing of the injection port by a pin member can be performed reliably.

  In addition, if the head body is provided with a protrusion that can be inserted into the notch formed in the support wall as the head body is pushed down, the pin member becomes unstable in the vertical direction when the pin member is lowered. Can be prevented. Thereby, the retreat of the pin member is achieved smoothly, and the injection port can be opened and closed reliably.

(a)-(c) is sectional drawing which shows typically the initial state of the container which employ | adopted the open / close-type ejection head which is the 1st form of this invention from the side, its principal part front view, and its X- It is X sectional drawing. A sectional view schematically showing a state in which only the injection port is opened without driving the pump in the container by pushing down the opening / closing type ejection head when the opening / closing type ejection head of the same form is in the initial state. It is a figure, the principal part front view, and its XX sectional drawing. It is sectional drawing which shows typically the state which driven the pump in a container by pushing down the said opening-and-closing type ejection head further from the state which opened the opening of the opening-and-closing type ejection head of the same form. It is YY sectional drawing when the opening-and-closing type ejection head of the form is in an initial state. It is sectional drawing which shows typically the initial state of the container which employ | adopted the open / close-type ejection head which is the 2nd form of this invention from the side surface.

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

Reference numeral 1 denotes a head body that drives a pump P that has an injection port A ₁ that communicates with the inside of the container 20 and is disposed inside the container 20. The head main body 1 has an external shape formed by a top wall 1a used when the user pushes down and an outer peripheral wall 1b that hangs down from the outer edge of the top wall 1a in a cylindrical shape.

  The head body 1 has a partition wall 1c hanging from the top wall 1a and a partition wall 1d extending forward from the partition wall 1c and connected to the outer peripheral wall 1b. A flow path space 1e that forms a cylindrical recess opening in front of the head body 1 is formed in the surrounded region.

  Further, the partition wall 1c forms a sub chamber 1f as an arrangement space for a support wall 6 described later between the partition wall 1c and the outer peripheral wall 1b. The sub chamber 1f communicates with the flow path space 1e through a through hole 1g formed in the partition wall 1c.

  The head body 1 has a lower cylinder portion 1h that hangs down from the partition wall 1d, and a passage leading to the flow path space 1e is formed inside the lower cylinder portion 1h. Moreover, the upper cylinder part 5a of the above-mentioned joint 5 can be slidably fitted inside the lower cylinder part 1h.

Reference numeral 2 denotes a nozzle (pouring cylinder) that is disposed sideways in the flow path space 1e. The nozzle 2 has a peripheral wall 2a, and forms an extraction channel 2b formed as a through-hole inside thereof. The peripheral wall 2a, a plurality of apertures 2c are formed at intervals in the axial O _X around. Thereby, the extraction path 2b formed inside the nozzle 2 leads to the flow path space 1e through the opening 2c. Note that it is not always necessary to form a plurality of apertures 1c, and it is sufficient that at least one aperture is formed.

Reference numeral 3 is a nozzle pin (pin member) that is disposed laterally in a dispensing channel 2 b formed inside the nozzle 2 and can open and close the injection port A ₁ of the nozzle 2. The nozzle pin 3 integrally has an annular piston 3a, and is held in the extraction passage 2b via the piston 3a so as to be able to move forward and backward.

Reference numeral 4 denotes a spring (elastic member) disposed between the partition wall 1c and the piston 3a. Spring 4 is normally as shown in FIG. 1, to seal the injection port A ₁ by biasing the nozzle pin 3 to the injection port A ₁ side.

Reference numeral 5 denotes a joint for connecting the head body 1 to the pump P. Joint 5 has a tubular portion 5a on the erected along the axis O _Y, to hold the lower tubular portion 1h of the head body 1 vertically movably. Thus, the head body 1, while maintaining the sealed state between the upper cylindrical portion 5a of the lower tubular portion 1h and the joint 5 thereof, is slid in the vertical direction along the axis O _Y against joint 5 Can do.

  Further, a passage communicating with the stem S of the pump P is formed inside the joint 5 and communicates with the inside of the dispensing passage 2b through the lower cylindrical portion 1h of the head body 1. The pump P is an existing pump mechanism disposed inside the container 20, and pumps the contents of the container 20 by repeatedly pressing down and returning the stem S. Further, the pump P is fixed to the mouth portion 21 of the container 20 via the ring cap 30.

  A support wall 6 that stands up from the joint 5 is integrally provided on the rear side of the joint 5. The distal end of the support wall 6 has a bifurcated shape in which two distal end portions 6a stand up. Thereby, a notch C for engaging the nozzle pin 3 as described later is formed between the two tip portions 6a.

  In engaging the nozzle pin 3 with the notch C, in this embodiment, the rear end 3b of the nozzle pin 3 is configured as a bulging portion. As a specific example, the rear end 3b of the nozzle pin 3 is formed as a bulging portion by forming a circumferential groove 3c around the axis of the nozzle pin 3 as shown. The outer diameter of the peripheral groove 3c of the nozzle pin 3 is set to be equal to or smaller than the width dimension of the notch C. Thus, if the circumferential groove 3 c of the nozzle pin 3 is inserted into the notch C, the nozzle pin 3 also moves up and down along the notch C following the head body 1 moving up and down relative to the joint 5.

  In addition, as shown in FIGS. 1A, 1C, etc., the tip portion 6a is inclined such that the rear end 3b of the nozzle pin 3 slides as the nozzle pin 3 descends along the notch C. A surface F is formed. As shown in the figure, the inclined surface F inclines backward as it goes downward, and resists the biasing force of the spring 4 in conjunction with the nozzle pin 3 descending along the notch C. Then, the nozzle 4 is moved backward while the spring 4 is compressed.

Thereby, as shown in the time-series changes in FIGS. 1 to 2, the head main body 1 is pushed down with respect to the joint 5 by the push-down, and at the same time, the ejection port A ₁ of the head main body 1 is connected to the nozzle pin 3. Is released by moving backward against the urging force of the spring 4.

On the other hand, when the pressing down of the head body 1 is released, the nozzle pin 3 tries to move forward by the urging force (restoring force) of the spring 4 in the compressed state, so that the rear end 3 b is formed on the support wall 6. Ascending along the notch C, ascending along the inclined surface F. As a result, as shown in the time-series changes from FIG. 2 to FIG. 1, the head main body 1 is pushed up with respect to the joint 5 by releasing the pushing down, and returns to the initial position shown in FIG. 1. at the same time, injection port a ₁ of the head main body 1 is sealed by the nozzle pin 3 is biased to the injection port a ₁ by the urging force of the spring 4 (restoring force).

  By the way, the nozzle pin 3 connected to the support wall 6 is urged by the spring 4 to advance with respect to the head body 1. For this reason, when the nozzle pin 3 slides back along the inclined surface F, the reaction force from the spring 4 compressed between the head main body 1 is applied to the support wall 6 via the rear end 3b of the nozzle pin 3. Creates a forward pulling force. It is also considered that such a pulling force generates a force that tilts the support wall 6 forward.

  Therefore, on the front surface of the support wall 6, as shown in FIGS. 1A and 1B, the support wall 6 faces forward due to the pulling force from the spring 4 compressed as the nozzle pin 3 moves backward. A first protrusion 6b that comes into contact with the head body 1 when tilted is integrally provided. The first projecting portion 6b is a partition wall 1c provided inside the head body 1 when the support wall 6 is inclined forward due to the pulling force from the spring 4 compressed as the nozzle pin 3 moves backward. It consists of two vertical ribs that prevent the tilting by contacting.

In addition, as shown in FIGS. 1B and 1C, the partition wall 1c of the head body 1 has a second projecting portion G projecting toward the tip portion 6a of the support wall 6 in the sub chamber 1f. ₁ is provided integrally. When the support wall 6 tends to tilt forward due to the pulling force from the spring 4 compressed as the nozzle pin 3 moves backward, the second protrusion G ₁ contacts the tip end portion 6 a of the support wall 6. By doing so, it consists of two vertical ribs that prevent the inclination.

Further, the head main body 1 is provided with a protrusion G ₂ that can be inserted into the notch C as the head main body 1 is pushed down. Ridges G ₂ is composed as a multiply passed partition wall partitions the auxiliary chamber 1f to the right and left between the outer peripheral wall 1b and the partition wall 2c. The protrusion G ₂ is inserted into the notch C as shown in FIG.

  The openable jet head of this embodiment includes a head main body 1, a nozzle 2, a nozzle pin 3, a spring 4, a joint 5, and a support wall 6. If such an openable jet head is mounted on the stem S, the pump P in the container 20 can be driven by moving the openable jet head up and down.

That is, according to the present embodiment, when the head body 1 in the initial position is lowered with respect to the joint 5 as shown in FIG. 1, the nozzle pins arranged in the head body 1 as shown in FIG. 3 moves backward as the rear end 3 b slides along the inclined surface F while descending along the notch C formed in the support wall 6 rising from the joint 5. As a result, the head main body 1 is pushed down with respect to the joint 5 by the push-down, and at the same time, the nozzle A 3 of the head main body ₁ is opened by the backward movement of the nozzle pin 3 against the urging force of the spring 4. The

  Thereafter, when the head main body 1 is further pressed down, the head main body 1 causes the pump P to be driven by pressing down the stem S as an openable jet head integrated with the joint 5 as shown in FIG.

Further, according to the present embodiment, when the push-down of the head body 1 is released from the state of FIG. 3, the nozzle pin 3 has the rear end 3 b applied to the support wall 6 by the urging force from the spring 4 as shown in FIG. 2. It rises along the notch C while sliding along the formed inclined surface F. Thus, as shown in FIG. 1, the head body 1, the depressed simultaneously and to return pushed up against the joint 5 to the initial position by being released, the injection port A ₁ of the head body 1 The nozzle pin 3 is sealed by being urged toward the injection port A ₁ by the urging force of the spring 4.

  Thereby, according to this form, as before, the liquid running out after ejecting the content liquid is good, and it is difficult for dripping or clogging to occur.

  Further, according to this embodiment, the nozzle pin 3 is moved back and forth as the head body 1 moves up and down simply by passing the nozzle pin 3 disposed in the head body 1 through the notch C formed in the support wall 6 rising from the joint 5. Can be assembled to advance. That is, according to the present embodiment, a mechanism provided with a mounting plate and a lever member, which has been conventionally interposed between the head main body 1 and the joint 5, becomes unnecessary. Further, since such a mechanism becomes unnecessary, the assembly process can be simplified without going through a complicated process for assembling the mechanism.

  Therefore, according to the present embodiment, the number of parts is reduced and the assembly work efficiency is improved as compared with the conventional case. In addition, production costs and manufacturing costs can be reduced by reducing parts and improving assembly work efficiency.

  In other words, according to the present embodiment, parts can be saved and the assembly work efficiency can be improved, and the cost can be improved, the liquid can be easily drained after the content liquid is ejected, and the open-and-close type ejection is less likely to cause dripping or clogging. A head can be provided.

  Further, if the support wall 6 is formed integrally with the joint 5 as in this embodiment, it is effective for saving parts and improving assembly work efficiency.

Further, as in this embodiment, the support wall 6 comes into contact with the partition wall 1c of the nozzle body 1 when the support wall 6 is inclined forward due to the pulling force from the spring 4 compressed as the nozzle pin 3 moves backward. A second protrusion that contacts the first protrusion 6b and / or the head body 1 when the support wall 6 tilts forward due to the pulling force from the spring 4 compressed as the nozzle pin 3 moves backward. If the portion G ₁ is provided, the nozzle pin 3 does not retreat and the injection port is not opened because the support wall 6 tilts forward due to the pulling force from the spring 4 compressed as the nozzle pin 3 moves backward. Or a phenomenon that the desired amount cannot be dispensed because the pin member is not sufficiently retracted can be prevented. Thus, it is possible to reliably perform opening and closing of the injection port A ₁ by nozzle pin 3.

In the present embodiment, as shown in FIG. 4, the outer peripheral surface of the joint 5 a pair of guide walls 5c is erected upwardly, the outer surface of the guide wall 5c along the axis O _Y extending Are formed in a guide wall 5c on the inner surface of the outer peripheral wall 1b of the head body 1 while facing each other in a direction perpendicular to the direction in which the nozzle pins 3 extend. A protrusion 1p that protrudes inward is provided integrally with the vertical groove 5b. Each protrusion 1p, as shown in FIG. 4 vertical movement, by being inserted into the longitudinal groove 5b formed in the joint 5, together with the longitudinal grooves 5b, against joint 5 head body 1 along the axis O _Y It functions as a guide when doing.

  Such a relationship between the protrusion 1p and the longitudinal groove 5b results in suppressing an unauthorized displacement of the joint 5 with respect to the head body 1.

In addition, as in this embodiment, the head main body 1 is provided with a ridge G ₂ that can be inserted into the notch C formed in the support wall 6 when the head main body 1 is pushed down from the head main body 1. If provided, the nozzle pin 3 can be prevented from becoming unstable in the vertical direction when the nozzle pin 3 is lowered. Thereby, the retreat of the nozzle pin 3 is achieved smoothly, and the injection port A ₁ can be reliably opened and closed.

  Further, according to the present invention, the joint 5 and the support wall 6 can be integrated by assembling separate members as in the second embodiment illustrated in FIG.

  If the support wall 6 is configured separately from the joint 5 as in the present embodiment, for example, in consideration of the sealing performance with the lower cylinder portion 1h of the head main body 1, the upper portion that is a connecting portion with the head main body 1 is used. While a relatively flexible material is used for the cylindrical portion 5a, a material having a relatively high rigidity (strength) is used as the material of the support wall 6 in consideration of the urging force from the spring 4 via the nozzle pin 3. This is effective when trying to obtain an effect that the joint 5 and the support wall 6 are opposite to each other, such as when trying to do so.

  The above description shows the preferred embodiment of the present invention, but various design changes can be made according to the application. For example, the open / close jet head according to the present invention can be applied not only to a container having a manual pump as in this embodiment but also to an aerosol container. In addition, each configuration employed in each mode can be appropriately combined with each other.

  The present invention can be applied not only to containers for storing contents such as shampoos, rinses, liquid soaps and cosmetics but also to various containers containing contents.

1 Head body 2 Nozzle 3 Nozzle pin (pin member)
4 Spring (elastic member)
5 Joint 6 Support wall 6a Support wall tip part 6b First protrusion C Notch E ₆ Tip part of tip part F Inclined surface G ₁ Second protrusion G ₂ Projection part

Claims (4)

A head body that has an injection port that communicates with the inside of the container and moves the stem disposed inside the container up and down, a joint that holds the head body up and down and connects the head body to the stem, and a front and back inside the head body A pin member that can be moved sideways so as to be able to open and close the injection port, and an elastic member that is disposed between the pin member and the head body and seals the injection port by biasing the pin member toward the injection port. An open / close jet head having
A support wall that stands up from the joint is provided on the rear side of the joint,
Form a notch allowing the pin member to move up and down at the tip of the support wall,
As the pin member descends along the notch by pushing down the head body at each of the two tip portions that form the notch, the pin member slides backward toward the pin member. and forming an inclined surface retracting,
A protrusion that is provided on the front surface of the support wall and that can contact the partition wall through which the rear end of the pin member penetrates, among the partition walls that form the arrangement space of the pin member in the head body by the downward movement of the head body relative to the joint, Of the partition walls provided in the head body and forming the pin member placement space, the partition wall through which the rear end of the pin member penetrates can be brought into contact with the front surface of the tip portion of the support wall by the downward movement of the head body relative to the joint. An open / close-type jet head comprising at least one of the protruding portions .   2. The openable jet head according to claim 1, wherein the support wall is integrally formed with the joint.   2. The openable jet head according to claim 1, wherein the support wall is configured separately from the joint. 4. The openable jet head according to any one of claims 1 to 3 , wherein the head main body includes a protrusion that can be inserted into a notch formed in the support wall when the head main body is pushed down. .

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