JP4318482B2 - Injection button with long nozzle - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a socket portion formed on a rotor at a base end portion of a long nozzle at a tip portion of a nozzle portion provided on a spray button whose base end portion is fitted to a valve stem protruding from the head portion of an aerosol container. When the long nozzle is rotated to the downward storage position by rotating the nozzles, the contents are directly ejected forward from the ejection port at the tip of the nozzle portion by the push-down operation of the ejection button. The present invention relates to a spray button with a long nozzle that is sprayed from the tip of a long nozzle when the nozzle is rotated to a forward use position and the spray port communicates with the inflow path of the socket portion.
[0002]
[Prior art]
As this type of connecting portion, it is well known from Document 1 that a cylindrical socket portion of a long rotor is rotatably connected to a disk-like portion at the tip of a nozzle. On the contrary, according to Document 2, it is also well known that the disk portion of the rotor is rotatably connected to the concave curved socket portion at the nozzle tip. As a result, in the retracted state where the long nozzle is set downward along the container, the nozzle is directly ejected forward from the injection port at the tip of the nozzle, and in the state where the long nozzle is set at the horizontal use position, the long nozzle is It can be ejected from the forward position via the nozzle.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 61-106365 [Patent Document 2]
Japanese Patent Laid-Open No. 2002-248384
[Problems to be solved by the invention]
In the case of such a rotor, a long nozzle can be pivotally attached to the nozzle portion without using a ball joint, but in order to ensure sealing performance so that the internal solution does not leak, the rotor and nozzle It is necessary to press the contact portion with the tip portion, and therefore there is a problem that the sealing performance is deteriorated due to wear in the process of repeatedly rotating the rotor.
[0005]
In view of such a point, the present invention has an object to provide an injection button with a long nozzle of the kind described at the beginning, which can suppress deterioration in sealing performance over time.
[0006]
[Means for Solving the Problems]
In order to achieve this object, according to the present invention, in accordance with the first aspect of the present invention, a long length is provided at the distal end portion of the nozzle portion provided on the injection button whose base end portion is fitted to the valve stem protruding from the head portion of the aerosol container. When the socket formed on the rotor at the base end portion of the nozzle is rotatably connected, when the long nozzle is rotated to the downward storage position, the injection port at the tip of the nozzle portion is operated by depressing the injection button. When the long nozzle is turned to the forward use position, the long nozzle is sprayed from the tip of the long nozzle by communicating with the inflow passage of the socket part. In the injection button with nozzle, the tip of the nozzle part is formed as a spherical ball part having an injection port at the center of the front area, and an inflow path is formed at the center and is a perfect circle that is in contact with the front area Annular A pair of ball holding pieces extending from both sides of the ball contact portion so as to surround the side surface of the ball portion, and having an inner peripheral surface having an arc-shaped cross section corresponding to the diameter of the ball portion. Is formed on the socket part, and an arc-shaped ball pressing protrusion having an inner diameter smaller than the diameter is formed on the inner peripheral surface so as to be pressed against the back area of the ball part at the use position, and extends forward on the nozzle part. A pair of socket pressure contact pieces on both sides that are pressed against the ball clamping piece from both sides are provided, and the inner circumferential surface of the socket pressure contact piece does not contact the outer circumferential surface of the ball clamping piece in the retracted position, and the ball in the use position. A socket pressure contact portion is formed in pressure contact with the outer peripheral surface of the tip portion of the holding piece beyond the ball pressing protrusion. In the retracted position, the ball pressing protrusion contacts the upper surface area of the ball portion, and the socket pressure contact portion contacts the ball holding piece. In the one-use position, the socket pressure contact portion is pressed against the outer peripheral surface of the tip portion and the ball clamping pieces are elastically bent so as to approach each other. The portion is pressed against the front region so as to ensure sealing performance.
[0007]
In the retracted position where the ball is directly ejected forward from the ejection port of the ball part by the push-down operation of the ejection button, the ball clamping piece is not pressed into contact with the socket pressure contact piece due to its shape configuration, and therefore the pressure on the ball part by the ball pressing projection is released. The In the use position where the long nozzle is rotated forward, the ball clamping piece presses against the socket pressure contact portion of the socket pressure contact piece, so that the ball pressing projection presses the ball portion by the elastic deflection of the ball clamping piece. The contact portion is pressed against the front area of the ball portion to ensure sealing performance.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
An injection button with a long nozzle according to an example of the embodiment of the present invention will be described with reference to FIGS. The injection button 10 communicates with a fitting portion 11 that is fitted at a proximal end portion to a valve stem 2 that protrudes from the head of an aerosol container 1 containing, for example, an insecticide. A nozzle insertion portion 12 that extends in the horizontal direction and has a fitting inlet 12 a into which the proximal end portion 15 a of the pipe-like nozzle portion 15 is fitted at the distal end portion is provided, and is pushed down on the upper surface portion of the fitting portion 11. The fitting portion 11 is fitted to the valve stem 2 protruding in an upward biased state from the mounting cup through the operation opening 3a of the cover cap 3 that covers the mounting cup attached to the head of the aerosol container 1. . Further, a long nozzle 25 is attached to the injection button 10, and a base end portion of the injection button 10 is fitted into the connection portion 24 of the rotor 20 so that it can be connected to the nozzle portion 15.
[0009]
Such a configuration is basically well-known, but according to the present invention, a later-described socket pressure contact piece 17 extending forward is attached to the nozzle portion 15, and the nozzle portion is inserted into the fitting hole 18 of the base end portion 18 a. The outer peripheral surface 15a of 15 is fitted. A flow path 14 is formed in the nozzle part 15 in the lateral direction, and a ball part 16 swelled in a spherical shape is formed at the tip, and communicates with the flow path 14 at the center of the front area 16a. An injection port 19 is formed.
[0010]
On the other hand, a socket portion 30 that is rotatably connected to the ball portion 16 is formed at the base portion of the rotor 20. As shown in FIGS. 1 and 2, the socket portion is formed as a conical inflow passage 22 on the inner peripheral surface, and a cylindrical ball contact portion 31 whose tip portion contacts the front area 16 a of the ball portion 16. And a pair of ball clamping pieces 33 that extend from both sides of the base of the ball contact portion toward the injection button 10 and clamp the ball portion 16 from both sides. The center line of the inflow path 22 is coaxial with the horizontal lateral center line of the flow path 14, and the tip of the ball contact portion 31 is a perfect annular shape centering on this coaxial center line, and This annular strip shape makes it easy to exhibit elasticity.
[0011]
The ball holding pieces 33 are formed to be obliquely non-parallel to the above-mentioned center line so as to be separated from each other as they extend to reach the vicinity of the base portion of the ball portion 16 and correspond to the diameter of the ball portion 16. An inner peripheral surface having an inner diameter and an outer peripheral surface having an outer diameter increased by a uniform thickness, and extending in a circular arc shape. Further, the ball portion 16 is pressed on the inner peripheral surface of the ball clamping piece 33 by pressing the ball portion 16 against the back surface region 16b of the ball portion 16 in a state where the long nozzle 25 is set at the horizontal use position. An arc-shaped ball pressing protrusion 35 having an inner diameter smaller than the diameter of the ball portion 16 with the center line as a center is formed.
[0012]
The inner peripheral surface of a pair of plate-like pressure contact piece main bodies 17a on both sides of the socket pressure contact piece 17 is a flat surface having a separation distance that can be bent inward by pressing the outer surface tip of the ball clamping piece 33 at the use position. And are substantially parallel to each other. The vertical width of the pressure contact piece main body 17a is set to be larger than the diameter of the ball portion 16 so that the tip of the ball holding piece 33 rotated in the vertical direction at the storage position does not protrude upward. In addition, relative distances between the inner peripheral surface region 17b on both sides that function as the socket pressure contact portions are set so as not to contact the outer peripheral surface of the ball clamping piece 33 at the storage position of the long nozzle 25. A stepped receding surface 17c is formed which increases in size.
[0013]
Since each part described above is a molded product of synthetic resin, in particular, the ball clamping piece 33 is given bending elasticity so as to bend, and each part is also given fitting property. At the time of assembly, the fitting portion 11 is fitted to the valve stem 2 at the base end portion, and the fitting inlet 12 a of the nozzle fitting portion 12 is set in the distal end opening portion 3 b of the cover cap 3. In a state in which the nozzle portion 15 is fitted to the fitting inlet 12a in a state where the fitting portion 18 is fitted in the fitting hole 18 of the socket pressure contact piece 17, and the rotation position of the socket pressure contact piece 17 is set in the vertical direction, The proximal end surface is brought into contact with the distal end surface of the nozzle insertion portion 12. Next or first, the ball holding piece 33 is inserted in the socket press-contacting piece 17 with the rotation position thereof being directed in the vertical direction to hold the ball portion 16.
[0014]
The operation of the long nozzle-equipped injection button 10 configured as described above is as follows. As shown in FIG. 3B, in a state where the long nozzle 25 is stored in a bent state along the side surface of the aerosol container 1, the injection port 19 is positioned in the gap between the ball holding pieces 33 on both sides, thereby By the push-down operation of the button 10, it is directly injected forward. On the other hand, when the long nozzle 25 is used, as shown in FIG. 3A, when the push-down operation is performed in a state where the long nozzle 25 is rotated to the horizontal position, the liquid content passes from the injection port 19 via the inflow path 22. The front end of the nozzle is sprayed forward.
[0015]
In the retracted position, the socket portion 30 is restrained from dropping downward by the ball pressing projection 35 that is in contact with the upper surface area of the ball portion 16, and is moved in the front-rear direction by the contact of the arc-shaped ball holding piece 33 corresponding to the diameter. The socket portion 30 is held in a connected state to the ball portion 16 in a state where the drop-off of the ball portion 16 is restrained and the upward contact is prevented by the contact of the ball contact portion 31. Further, the ball clamping piece 33 faces the receding surface 17c of the socket pressure contact piece 17 with a gap, so that the compression clamping of the ball clamping piece 33 by the socket pressure contact piece 17 is released, and the ball contact portion by the ball pressing protrusion 35 is released. The press contact for securing the sealing performance to the ball portion 16 of 31 is released.
[0016]
On the other hand, in use, the ball pressing projection 35 of the ball clamping piece 33 rotates to the back of the ball portion 16 and comes into contact with the back surface region 16b, and the tip of the outer peripheral surface ahead of the ball pressing projection 35 serves as a socket pressure contact portion. The ball holding piece 33 is bent by the elastic reaction force and presses the ball portion 16 forward by the ball pressing protrusion 35, so that the ball contact portion 31 is moved backward by the reaction force retraction. A sealed state is secured by pressing against the front region 16a of the portion 16.
[0017]
As described above, the pressure contact between the socket part 30 and the ball part 16 is released outside the vicinity of the use position of the long nozzle 25, the mutual wear due to the repeated rotation operation is suppressed, and the elasticity of the ball holding piece 33 is also reduced. Since the wear of the ball part 16, the ball pressing protrusion 35 and the ball contact part 31 is also compensated for by the clamping force accompanied with, sealing performance is ensured for a long time. Further, the sealing performance itself is improved by the bending of the ball contact portion. Further, it is not necessary to form the socket part in a completely spherical shape.
[0018]
As another embodiment, the ball holding pieces 33 are not formed obliquely as described above, but are formed parallel to each other on both sides, and the vicinity of the boundary with the receding surface 17c of the socket pressure contact piece 17 is held between the balls. It can also be set as the socket press-contact part which bends the piece 33 slightly inside. In addition, the ball clamping piece is not formed obliquely, or is formed obliquely so that the inner circumferential surfaces on both sides gradually separate from each other as the socket pressure contact piece is moved forward, while remaining oblique. It is also conceivable that the intermediate part is a socket pressure contact part. Furthermore, the outer peripheral surface on both sides of the ball clamping piece and the inner peripheral surface on both sides of the socket pressure contact piece are made substantially parallel, the inner peripheral surface of the tip end portion of the socket pressure contact piece is terminated as a socket pressure contact portion, and the side of the ball portion is not surrounded. It is also conceivable to form it as short as possible.
[0019]
FIG. 4 shows a socket and ball portion according to still another embodiment, and the same or equivalent parts as those described above will be described with the same reference numerals. The pair of socket pressure contact pieces 17A and the pair of ball clamping pieces 33A extend with the same thickness, and the outer peripheral surfaces on both sides of the ball clamping piece 33A and the inner peripheral surfaces on both sides of the socket pressure contact piece 17A are substantially bent. They are close enough to not occur. On the inner peripheral surfaces on both sides of the socket pressure contact piece 17A, upper and lower line-shaped protrusions 38 are formed at positions ahead of the ball pressing protrusions 35 as viewed from the ball clamping piece 33A. If the external appearance is not taken into consideration, the socket press-contacting piece 17A can be shortened by eliminating the distal region of the protrusion 38.
[0020]
【The invention's effect】
According to the present invention, the ball contact portion of the socket portion is in contact with the ball portion so as to ensure a sealing property only in the vicinity of the use of the long nozzle. The wear of the mutual seal area accompanying the turning operation of the shank nozzle is suppressed. Therefore, sealing performance is ensured for a long time.
[Brief description of the drawings]
1A and 1B show a main part of an injection button with a long nozzle according to an embodiment of the present invention. FIG. 1A is a sectional view of a socket part in use of the long nozzle, and FIG. FIG. 3C is a rear view of the socket part.
FIG. 2 is an exploded perspective view of the same long nozzle-equipped injection button.
FIGS. 3A and 3B show a state in which the spray button with the long nozzle is assembled to an aerosol container. FIG. 3A is a perspective view showing a use state of the long nozzle and FIG. 3B is a perspective view of a storage state. .
FIG. 4 is a cross-sectional view corresponding to FIG. 1A of an injection button with a long nozzle according to another embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Aerosol container 10 Injection button 14 Flow path 15 Nozzle part 16 Ball | bowl part 16a Front area | region 16b Rear area | region 17, 17A Socket press-contacting piece 17c Retreating surface 19 Injection port 20 Rotor 22 Inflow path 25 Long nozzle 30 Socket part 31 Ball | bowl contact part 33, 33A Ball clamping piece 35 Ball pressing protrusion

Claims (5)

A socket formed on the rotor at the base end of the long nozzle is rotatable at the tip of the nozzle provided on the injection button whose base end fits into the valve stem protruding from the head of the aerosol container. By connecting, when the long nozzle is rotated to the downward storage position, the content is directly ejected forward from the ejection port at the tip of the nozzle portion by pushing down the ejection button, while the long nozzle is facing forward. In the injection button with a long nozzle that is injected from the tip of the long nozzle by rotating the injection port to the inflow path of the socket part when rotated to the use position,
The tip of the nozzle part is formed as a spherical ball part having an injection port in the center of the front area, and an inflow path is formed in the center, and a perfect circular ball contact that contacts the front area And a pair of opposite sides of the ball holding piece extending from both sides of the ball contact portion so as to surround the side surface of the ball portion, the inner peripheral surface having an arc-shaped cross section corresponding to the diameter of the ball portion. An arc-shaped ball pressing protrusion having an inner diameter smaller than the diameter is formed on the inner peripheral surface so as to be formed on the socket portion and press-contacted to the back surface region of the ball portion at a use position.
A pair of socket pressure contact pieces on both sides that extend forward to the nozzle portion and press contact with the ball holding piece from both sides are provided, and the inner peripheral surface of the socket pressure contact piece is on the outer peripheral surface of the ball holding piece in the retracted position. A socket pressure contact portion is formed that does not contact and is in pressure contact with the outer peripheral surface of the portion ahead of the ball pressing protrusion in the ball clamping piece at the use position.
In the retracted position, the ball pressing protrusion abuts against the upper surface area of the ball portion, and the socket pressure contact portion does not press against the ball clamping piece, while in the use position, the socket pressure contact portion is the tip portion of the tip portion. The ball clamping pieces are elastically bent so as to come close to each other by pressing against the outer peripheral surface, thereby pressing the ball part with the ball pressing projections to ensure the sealing property of the ball contact part in the front area. An injection button with a long nozzle, characterized by being in pressure contact.   The socket pressure contact piece extends to the side of the ball portion, and planar inner peripheral surfaces on both sides of the socket pressure contact piece are formed as socket pressure contact portions, and further, the inner periphery of the socket pressure contact piece is ahead of the socket pressure contact portion. 2. The injection button with a long nozzle according to claim 1, wherein the surface area is formed as a receding surface so that the outer peripheral surface of the ball holding piece does not contact at the storage position. As the outer peripheral surfaces on both sides of the ball holding piece extend forward, the outer ends of the ball holding pieces are formed obliquely so as to be separated from each other gradually. The injection button with a long nozzle according to claim 2, wherein the injection button is in pressure contact with a planar inner peripheral surface.   As the inner peripheral surfaces on both sides of the socket press-contacting piece extend forward, they are formed obliquely so as to be gradually separated from each other. The injection button with a long nozzle according to claim 2, wherein the injection button is in pressure contact with a planar inner peripheral surface as a portion. The outer peripheral surfaces on both sides of the ball clamping piece and the inner peripheral surfaces on both sides of the socket pressure contact piece are close to each other and substantially parallel to each other, and a protruding portion is formed as a socket pressure contact portion on the inner peripheral surface. The injection button with a long nozzle according to claim 1.

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