JP4339501B2 - Aero pushbutton - Google Patents

Description

[0001]
[Industrial application fields]
  The present invention is used when spraying aerosol contents such as hair products, cosmetics, deodorants and antiperspirants, other human body products, insecticides, coating agents, cleaners, other household products, industrial products, automotive products, foods, etc. Further, the present invention relates to a push button for preventing side leakage of the aerosol contents from the connection portion between the push button and the stem.
[0002]
[Prior art]
  2. Description of the Related Art Conventionally, a push button for injecting aerosol contents has a cylindrical fitting portion projectingly formed on the lower surface of a push button main body, and the stem upper end of a valve mechanism is fitted to this fitting portion. By forming the inner diameter of the fitting portion smaller than the outer diameter of the upper end of the stem, the fitting force is increased so that the push button is not inadvertently separated from the stem. Then, the valve mechanism is opened by pressing the push button main body and pushing down the stem, and the aerosol contents are jetted to the outside. When the push button body is pressed, if the push button body is moved in the axial direction of the stem so that the push button body is not tilted, and the uniform push force is applied to the stem and smoothly pushed down in the axial direction, the member is deformed or damaged. In addition, the airtightness of the connecting portion between the stem and the push button was maintained, and the side leakage of the aerosol contents was prevented.
[0003]
[Problems to be solved by the invention]
  However, it is difficult for the pushbutton body to be pushed straight down in the axial direction of the stem with human hands. The pushbutton body is pushed in an inclined direction with respect to the axial direction of the stem due to the position and finger force of the operator's fingers during pressing. It is easy to be done. Then, the fitting between the fitting portion of the pushbutton body and the upper end of the stem may be displaced or deformed, and a gap may be formed between the fitting portion and the upper end of the stem to release the airtightness. Further, when the push button body is pressed many times in the tilt direction and abused, the fitting portion and the stem are worn and deformed, and the deterioration of the airtightness is promoted. Due to the deterioration of the airtightness, side leakage occurs from the connecting portion between the push button body and the upper end of the stem when the aerosol contents are jetted, and the aerosol contents adhere to the human body and the surroundings. Therefore, it is particularly inconvenient in aerosol contents where adhesion other than the target part such as insecticides, bleaches and paints is not preferable.
[0004]
  In addition, in an aerosol container in which the stem and the push button main body are separated or connected as necessary, the inner diameter of the fitting portion is set to the upper end of the stem in order to facilitate attachment / detachment of the push button main body to / from the stem. The outer diameter is less than minus 2.5%, and the fitting force is relatively weak. In such a pushbutton main body, the stem and the pushbutton main body are likely to be displaced from each other due to the pressing in the direction inclined from the axial direction of the stem, and a gap is likely to be generated.
[0005]
  In addition, there is a conventional product in which a lever portion that protrudes with fingers is provided on one side of the push button body. When the lever portion is pressed when spraying the aerosol contents, the push button body pushes the stem from an oblique lateral direction while tilting with respect to the axial direction of the stem. Accordingly, the connecting portions are displaced from each other and a gap is likely to be generated, and when the push button body is tilted and abused many times, the load on the connecting portion is large, and the stem and the fitting portion are likely to be deformed and worn. For this reason, the airtightness is impaired, and the aerosol contents are liable to cause side leakage.
[0006]
  There is also a method for preventing side leakage by further reducing the inner diameter of the fitting part of the pushbutton body, increasing the difference from the outer diameter of the upper end of the stem, and strengthening the engagement between the fitting part and the upper end of the stem. is there. However, in the case of a product in a form in which the pushbutton body is attached and detached, a large force is required to connect and remove the pushbutton body from the stem, and the work efficiency at the time of assembling the product is reduced as well as at the time of use. Furthermore, in this connection, the stem may be accidentally pushed down and the aerosol contents may be ejected to the outside.
[0007]
  Due to this erroneous injection, the contents of the aerosol are wasted and a problem of contaminating the human body and surroundings also occurs. In particular, when an aerosol container is filled with an aerosol content that is not preferable to be adhered to other than the target part such as an insecticide, a bleaching agent, or a paint, there is a possibility that the human body may be adversely affected or environmental pollution may occur.
[0008]
  In order to eliminate the drawbacks as described above, the present invention eliminates the disadvantage of the connection portion between the push button main body and the stem even if the push button main body is inclined and pushed in any direction different from the axial direction of the stem when the stem is pushed down by the push button. It is intended to maintain airtightness and prevent side leakage of the aerosol contents. In addition to preventing side leakage of the aerosol contents, the push button can be easily attached to and detached from the stem to improve work efficiency and prevent accidental injection of the aerosol contents during the attachment and removal. It is intended to enable manufacturing operations.
[0009]
[Means for Solving the Problems]
  In order to solve the above-mentioned problems, the present inventionBy connecting one side of the aerosol content in the injection direction to a fixed body to the aerosol container via a hinge part, and pressing the lever part protruding from the opposite side of the hinge part with fingers, the hinge part is The push button body is pressed as a fulcrum, and the stem can be pushed down.A cylindrical fitting part that inserts and fits the upper end of the stem of the valve mechanism is provided on the lower surface of the push button body, and an engaging cylinder that protrudes from the inner peripheral surface of the upper end of the stem protrudes from the inside of the fitting part. A conical shape in which the stem insertion side is smaller in diameter than the inner diameter of the stem and the outer diameter of the push button body side is larger than the inner diameter of the stem on the contact side with the inner peripheral surface of the stem upper end of the engagement cylinder The taper surface is provided.
[0010]
  Further, the inner diameter of the fitting portion of the push button main body having the hinge portion may be set to plus 5.0% to minus 2.5% with respect to the outer diameter of the upper end of the stem.
[0011]
  In addition, the valve mechanism is formed so that the injection amount can be adjusted in accordance with the amount by which the stem is pushed down, and the lever portion can be pushed down in the range of movement of the lever portion when the push button body is pressed, and the lever portion A locking piece that cannot be pushed down greatly is placed so that it can move freely.When a small amount of aerosol content is injected, the locking piece is placed so that it faces the moving range of the lever, and a small push on the pushbutton body is applied. When the aerosol content is jetted in large quantities, the locking piece may be removed from the movement range of the lever portion to allow a large pressing of the push button body.
[0012]
  In addition, the valve mechanism forms an upper chamber and a lower chamber through an insertion port in a housing whose upper end is fixed inside the lid of the aerosol container, and the upper end of the stem is inserted into the upper chamber through a stem gasket. A stem that protrudes outward from the lid and has a lower end pressing part provided at the lower end facing the insertion opening is mounted so that it can move up and down, and in the lower chamber, it faces the lower end pressing part of the stem A switching valve that protrudes from the insertion port to the upper chamber side is mounted so that the pressed part can be moved up and down, and a small-quantity circulation port that connects the upper chamber and the lower chamber is opened in this switching valve and the switching valve is inserted The valve seat is pressed and urged, and the insertion port is closed except for communication with a small amount of flow port.When the stem is pressed small, the switching valve is not pressed, and when the stem is pressed large, the lower end pressing portion of the stem Switching valve To press the pressing portion, a large quantity of contents to open the insertion port may be possible injection.
[0013]
[Action]
  Since the present invention is configured as described above, when the push button main body is connected to the upper end of the stem, the fitting portion of the push button main body is fitted to the outer periphery of the upper end of the stem and the inner peripheral surface of the upper end of the stem is engaged. The tube is inserted and arranged. And the taper surface of an engagement cylinder closely_contact | adheres to the inner peripheral surface of a stem upper end, and maintains the airtightness of a stem and a fitting part.
[0014]
  And at the time of the injection of the aerosol contents, the stem is pushed down by pressing the push button body in the stem direction to open the valve mechanism. By this opening, the aerosol content is sprayed to the outside. When the operator pushes down the pushbutton body in a tilt direction different from the axial direction of the stem without pressing the pushbutton body in the axial direction of the stem, A large load is applied to the connecting portion with the main body from the lateral direction. Due to the action of the force from the lateral direction, the push button body tilts or the fitting portion and the stem are deformed, and the connecting portions are displaced from each other to form a gap. For this reason, conventionally, the airtightness is impaired and a side leakage of the aerosol contents has occurred.
[0015]
  However, in the present invention, the tapered surface of the engaging cylinder is in close contact with the inner peripheral surface of the stem upper end, and this tapered surface is the inner peripheral surface of the stem upper end even if the push button body and the stem are misaligned. In addition, it always adheres in line contact or surface contact. Therefore, the airtightness between the stem and the push button main body is not impaired, and the side leakage of the aerosol contents is surely prevented.
[0016]
  Further, the tapered surface of the engagement cylinder is conical with a small diameter on the stem insertion side and a large diameter on the push button main body side, so that the tapered surface is always at the upper end of the stem regardless of the direction of the push button main body. Since it is in close contact with the inner peripheral surface, the airtightness is not impaired and the side leakage of the aerosol contents is surely prevented.
[0017]
  As described above, even when the push button is not pushed in the axial direction but is pushed in a direction inclined with respect to the axial direction of the stem, the side leakage of the aerosol contents from the connection portion between the push button and the stem is surely prevented. Can do. Therefore, it is highly safe for the human body and the environment, and can be used with excellent operability.
[0018]
  In addition, the push button main body connects one side of the aerosol content in the injection direction to a fixed body to the aerosol container via a hinge portion, and pushes a lever portion protruding from the opposite side of the hinge portion with a finger. By doing so, the push button body is pressed using the hinge as a fulcrum, and the stem can be pushed downIt is a thing.
[0019]
  In such a pushbutton, when the lever portion is pressed, the pushbutton body moves in the pressing direction with the hinge portion as a fulcrum, and the stem is pushed down obliquely from the lateral direction, so that the connecting portion between the stem and the pushbutton body is likely to be displaced, Since the fitting part and the stem are deformed due to overuse, the airtightness has been easily lost. However, even if the push button main body is largely inclined, the tapered surface of the engagement cylinder provided on the push button main body is always in close contact with the inner peripheral surface of the upper end of the stem, so that a high side leakage prevention effect can be obtained.
[0020]
  In the present invention, as described above, the tapered surface of the engagement cylinder is in close contact with the inner peripheral surface of the upper end of the stem to prevent side leakage, so that the fitting portion of the push button body and the upper end of the stem are connected as in the prior art. There is no need to do it firmly. Therefore, the attaching / detaching operation of the push button to the upper end of the stem can be easily performed, and the preparatory work at the time of use and the assembling work at the time of manufacture can be efficiently performed. In addition, since this easy connection is possible, the stem is not pushed down accidentally during assembly or the like, and erroneous injection of the aerosol contents can be prevented, thereby enabling safe use and assembly.
[0021]
  And preferably, PushThe inner diameter of the fitting part of the button body is, SuThe size is set to plus 5.0% to minus 2.5% with respect to the outer diameter of the upper end of the system. If formed in this way, it is possible to obtain a push button that not only has an appropriate fitting force that enables easy attachment / detachment of the push button, but can also reliably prevent side leakage of the aerosol contents. However, if the inner diameter of the fitting portion is formed to be larger than the stem upper end outer diameter plus 5.0%, the fitting force between the stem and the push button body is weakened, and side leakage is likely to occur. In addition, if the inner diameter of the fitting portion is smaller than the stem upper end outer diameter minus 2.5%, the fitting force is too strong and a large force is required to attach / detach the push button to / from the stem. When the main body is connected, the stem may be pushed down and the aerosol contents may be erroneously injected.
[0022]
  Further, in the above, since the push button body is connected to the fixed body with the hinge portion, even when the inner diameter of the fitting portion is larger than the stem outer diameter by plus 5.0%, The push button body does not fall off the stem during loading or display.
[0023]
  In addition, the push button of the present invention can be used by being attached to a valve mechanism capable of adjusting the injection amount in accordance with the downward sliding amount of the stem. This valve mechanism can be used by arbitrarily switching the injection form of the aerosol contents between a large quantity injection and a small quantity injection according to the purpose of use and the application area. By connecting the push button of the present invention, it is possible to prevent the aerosol contents from leaking sideways and to inject the aerosol contents more safely and without waste. In addition, in order to reliably switch between the large quantity injection and the small quantity injection, a locking piece that makes the large depression of the lever portion impossible to move is disposed in the movement range of the lever portion when the push button body is pressed. May be.
[0024]
  And when performing small amount injection of the aerosol content, a latching piece is arranged facing the lower surface of a lever part. When the push button body is pressed through the lever portion in this state, the lever portion hits the locking piece with a small amount of pressing, and the movement of the push button body stops. Due to the small amount of movement of the push button body, the stem is pushed down by a small amount, the valve mechanism is opened small, and a small amount of aerosol contents are injected to the outside. Further, when performing mass injection, by moving the locking piece to a position that does not hinder the pressing of the lever portion, the lever portion is largely pressed and the stem is largely pressed down. Due to the large depression of the stem, the valve mechanism is largely opened, and a large amount of aerosol contents can be injected.
[0025]
  Thus, by providing the locking piece, there is no need to adjust the pressing amount of the push button body depending on the operator's can, and only by placing or moving the locking piece on the lower surface of the lever portion, It is possible to accurately switch between small quantity injection and large quantity injection of contents. Therefore, it is possible not only to prevent side leakage of the aerosol contents, but also to obtain an aerosol product excellent in operability, and to efficiently use the aerosol contents according to the application area and application purpose.
[0026]
  In addition, the structure of the valve mechanism capable of adjusting the spray amount of the aerosol content corresponding to the amount of sliding down of the stem is formed in the housing having the upper end fixed inside the lid of the aerosol container, and the upper part through the insertion port. A chamber and a lower chamber are formed. Then, a stem that is urged and protruded outward from the lid body through a stem gasket and is arranged with the lower end pressing portion provided at the lower end facing the insertion opening is mounted in the upper chamber so as to be movable up and down.
[0027]
  A switching valve that faces the lower end pressing portion of the stem and protrudes from the insertion port to the upper chamber side is mounted in the lower chamber so as to be movable up and down. Open a small-volume distribution port that communicates. Then, the switching valve is pressed and urged against the valve seat of the insertion port, and the insertion port is closed except for communication with a small amount of flow port. When the stem is pressed slightly, the switching valve is set to a non-pressed state, and when the stem is pressed largely The pressed portion of the switching valve is pressed by the lower end pressing portion of the stem, and the insertion port is opened to form a large amount of aerosol contents.
[0028]
  The push button of the present invention is connected to the upper end of the stem of the valve mechanism formed as described above. And, the locking piece that controls the pressing amount of the push button body presses the lever part a small amount and hits the locking piece to push down the stem a small amount to open the valve mechanism. The dimensions should be such that the part does not press the switching valve. With such a configuration, only the aerosol content that has passed through only the small-quantity distribution port is ejected to the outside, and the aerosol content can be ejected in a small amount.
[0029]
  When the locking piece is moved to a position that does not hinder the movement of the lever part and the lever part is largely pressed, the pressed part of the switching valve is pressed by the lower end pressing part of the stem to open the insertion port. It is formed by dimensional matching so as to be possible, and enables mass injection of aerosol contents.
[0030]
  Further, the pushbutton for aerosol container of the present invention is used for hair products, cosmetics, deodorants and antiperspirants, other human body products, insecticides, coating agents, cleaners, other household products, industrial products, automotive products, foods, etc. Suitable for spraying aerosol contents. And as hair products, hair spray, hair treatment, hair shampoo / rinse, acid hair dye, oxidation type 2 permanent hair dye, color spray / bleaching agent, permanent agent, hair restorer, hair nick, bed restorative spray It can be used for hair fragrances.
[0031]
  Further, it can be used as a cosmetic for shaving cream, aftershave lotion, perfume / eau de cologne, face wash, sunscreen, foundation, depilation / decoloring agent, bath preparation and the like.
[0032]
  Moreover, as a deodorant and antiperspirant, it can be used for an antiperspirant, a deodorant, a body shampoo, etc. As other human body products, they can be used for muscle anti-inflammatory agents, skin disease agents, athlete's foot drugs, pest repellents, wiping agents, oral cleansing agents, oral dentifrices, wounds, burns, and the like.
[0033]
  Moreover, as an insecticide, it can use for a space insecticide, a cockroach insecticide, a horticultural insecticide, an acaricide, an unpleasant insect insecticide, etc. Moreover, as a coating agent, it can be used for household paints, automobile paints, undercoating and the like.
[0034]
  The cleaner can be used for household glass cleaners, bath cleaners, floor / furniture polish cleaners, shoe / leather cleaners, wax polishes, and the like. In addition, as other household products, they can be used for indoor deodorants, toilet deodorants, waterproofing agents, laundry glue, herbicides, clothing insecticides, flameproofing agents, disinfectants, and the like.
[0035]
  In addition, for industrial use, it can be used for lubricating rust preventives, adhesives, metal flaw detection agents, mold release agents, caulking agents, and the like. Further, for automobiles, it can be used for anti-fogging agents, anti-icing agents, engine cleaners and the like. In addition, it can be used for animal goods, hobby entertainment goods, foods such as coffee, juice, cream and cheese.
[0036]
【Example】
  Hereinafter, one embodiment of the present invention will be described with reference to the drawings. (1) is an aerosol container filled with an aerosol content, and a lid (2) is fixed to the upper end. A housing (4) is fixed to the inner surface of the lid (2) via a stem gasket (3). As shown in FIGS. 1 and 7, an annular partition wall (5) formed separately from the housing (4) is inserted and disposed in the housing (4), and the annular partition wall (5) is provided. The housing (4) is divided into an upper chamber (6) and a lower chamber (7). In addition, the partition wall (5) has an insertion port (8) opened at the center so that the upper chamber (6) and the lower chamber (7) can communicate with each other.
[0037]
  The upper chamber (6) of the housing (4) is fitted with a stem (10) whose upper end protrudes outward from the lid (2) so as to be movable up and down. The stem (10) is pressed and urged upward by the stem ridge (11). A jet passage (13) for aerosol contents is formed in the axial direction at the upper end (12) of the stem (10), and an orifice (14) communicating with the jet passage (13) is opened from the side. Yes.
[0038]
  The orifice (14) is normally sealed by the inner peripheral end face of the stem gasket (3), and in close contact with the inner peripheral end face of the stem gasket (3) in a state where the stem (10) is pushed down. The housing (4) is configured to be able to communicate with the outside and the outside. Moreover, the stem (10) has a lower end pressing portion (15) provided at the lower end disposed so as to face an insertion port (8) that separates the upper chamber (6) and the lower chamber (7).
[0039]
  On the other hand, a switching valve (16) is mounted in the lower chamber (7) of the housing (4) so as to be movable up and down. The switching valve (16) has a body portion formed in a U-shaped cylindrical shape and an upper end projecting into a columnar shape to form a pressed portion (17). The pressed portion (17) is an insertion port. It protrudes to the upper chamber (6) side through (8).
[0040]
  The pressed portion (17) is provided with a small amount distribution port (18) through which a small amount of aerosol content can be distributed. Further, the switching valve (16) is provided with a pressing ridge (20) between the lower bottom (7) and the bottom of the lower chamber (7), so that the switching valve (16) is always pressed in the direction of the insertion port (8). The switching valve (16) is brought into close contact with the valve seat (21) of the insertion port (8). In a state in which the switching valve (16) is in close contact with the valve seat (21), the communication between the lower chamber (7) and the upper chamber (6) is performed only through the small flow port (18).
[0041]
  When the stem (10) is largely pressed, the pressed portion (17) of the switching valve (16) can be pressed by the lower end pressing portion (15), and the upper chamber (6), the lower chamber (7), However, large communication is possible through the insertion port (8). However, in the case of a small pressing of the stem (10), the lower end pressing portion (15) presses the pressed portion (17) only by releasing the sealing relationship between the stem gasket (3) and the orifice (14). Rather, it is formed so as to keep the insertion port (8) closed by the switching valve (16). The housing (4) has a dip tube (23) connected to the inlet (22) of the aerosol contents to the lower chamber (7).
[0042]
  In the valve mechanism (24) formed as described above, the push button main body (25) is connected to the upper end portion (12) of the stem (10) so that the stem (10) can be pushed down. A cylindrical fitting portion (26) for inserting and fitting the upper end portion (12) of the stem (10) is provided on the lower surface of the push button body (25), and inside the fitting portion (26), An engaging cylinder (28) is provided protruding from the inner peripheral surface (27) of the upper end (12) of the stem (10).
[0043]
  The engaging cylinder (28) has an outer peripheral surface that comes into contact with the inner peripheral surface (27) of the upper end portion (12) of the stem (10), and an insertion side of the stem (10) on the inner peripheral surface of the stem (10). The outer diameter of the push button main body (25) side is a conical tapered surface (30) having a diameter larger than the inner diameter of the inner peripheral surface (27) of the stem (10). . As shown in FIG. 2, this tapered surface (30) is in close contact with the inner peripheral surface (27) of the upper end (12) of the stem (10), and the connecting portion between the push button body (25) and the stem (10). Has high airtightness.
[0044]
  Further, the push button body (25) has an injection nozzle (31) formed on one side, and the aerosol content that has passed through the ejection passage (13) of the stem (10) can be ejected from the injection nozzle (31) to the outside. It is said. The push button body (25) is connected to the fixed body (33) via the hinge portion (32), and the fixed body (33) is engaged and fixed to the lid body (2) of the aerosol container (1). ing.
[0045]
  The push button body (25) has a lever portion (34) that can be pressed with a finger on the opposite side of the hinge portion (32). When the lever portion (34) is pressed during the injection of the aerosol contents, the push button body (25) moves in the direction of the stem (10) with the hinge portion (32) as a fulcrum so that the stem (10) can be pushed down. .
[0046]
  Further, as shown in FIG. 6, the push button body (25) pivots in the opposite direction to the stem (10) with the hinge portion (32) as a fulcrum, so that the fitting portion (26) and the stem (10). The push button body (25) can be removed by separating the upper end portion (12).
[0047]
  In order to facilitate removal and connection of the push button body (25) having the hinge portion (32) from the stem (10), the fitting portion (26) of the push button body (25) has an inner diameter at the upper end. The portion (12) is preferably set to plus 5.0% to minus 2.5% with respect to the outer diameter. In addition, when formed with this size, the push button body (25) can be easily attached and detached, and when the push button body (25) is pressed to inject the aerosol contents, the push button body (25) It will have an appropriate fitting force without inadvertently falling off the stem (10), and an excellent operability can be obtained.
[0048]
  However, if the inner diameter of the fitting portion (26) is larger than the outer diameter plus 5.0% of the upper end portion (12) of the stem (10), the fitting portion (26) and the upper end portion (12) Since the fitting force is too weak, side leakage of the aerosol contents is likely to occur. Conversely, if the inner diameter of the fitting portion (26) is smaller than the outer diameter minus 2.5% of the upper end portion (12) of the stem (10), the fitting force is too strong and the push button to the stem (10) A large force is required to attach and detach the main body (25), which takes time for manufacturing work and preparatory work at the time of use. At the time of connection, the stem (10) is accidentally pushed down by the push button main body (25), and the aerosol contents are mistaken. There is a risk of spraying.
[0049]
  By forming the stem (10) and the push button main body (25) with the dimensions as described above, the push button main body is prevented while preventing the horizontal leakage of the aerosol contents occurring at the connecting portion between the push button main body (25) and the stem (10). It is assumed that (25) can be easily attached to and detached from the stem (10).
[0050]
  Further, the fixed body (33) is provided with a locking piece (36) for controlling the pressing amount of the lever portion (34) in the movement range (35) when the lever portion (34) is pushed down. The locking piece (36) pivotally supports one end of the plate-like member below the fixed body (33) and can rotate in the axial direction and the horizontal direction. Then, when the locking piece (36) is rotated with the shaft support portion (37) as a fulcrum and is raised in the axial direction as shown in FIG. 3, the locking piece (36) moves within the moving range of the lever portion (34) ( 35). When the lever portion (34) is pressed in this arrangement state, as shown in FIG. 3, the lever portion (34) hits the locking piece (36) with a small amount of pressing and sliding, and large pressing of the push button body (25) is prevented. The
[0051]
  Further, in order to improve the stability when the locking piece (36) is disposed in the movement range (35) of the lever portion (34), ribs (38) are projected on both side surfaces of the locking piece (36). A pair of engaging recesses (40) for engaging (38) is provided in the fixed body (33). On the other hand, as shown in FIGS. 1 and 4, when the locking piece (36) is tilted and placed parallel to the lever portion (34), the locking piece (36) prevents the lever portion (34) from moving up and down. As shown in FIG. 4, the push button main body (25) can be largely pressed.
[0052]
  Further, a mechanism for switching a small amount and a large amount of the injection mode of the push button body (25) by the locking piece (36) will be described. First, the distance between the other end when the locking piece (36) is raised in the axial direction and the lower surface of the lever portion (34) is such that the lower end of the stem (10) and the upper surface of the switching valve (16) are not pressed. The distance is substantially the same as or slightly shorter. With this configuration, when the lever portion (34) is pressed and abutted against the locking piece (36), the stem (10) is pushed down to open the valve mechanism (24). Further, the lower end pressing portion (15) of the stem (10) does not push down the switching valve (16), and a small amount of aerosol content can be injected.
[0053]
  Further, when the locking piece (36) is tilted horizontally and the lever portion (34) is largely pressed, the lower end pressing portion (15) of the stem (10) can push down the switching valve (16). . By pushing down the switching valve (16), the insertion port (8) is opened and a large amount of aerosol contents can be injected.
[0054]
  In both cases, when the small amount injection and the large amount injection are performed, the lever portion (34) protruding from the side surface of the push button body (25) is pressed and moved around the hinge portion (32). Since the push button body (25) is pushed down, a push force acts on the push button body (25) in an inclination direction with respect to the axial direction of the stem (10). Due to this action, as shown in FIGS. 7 and 8, the push button body (25) is tilted, and a gap is formed between the stem (10) and the upper end (12). In particular, in the case of mass injection, as shown in FIG. 5, the push button body (25) has a large inclination and is likely to be displaced. Conventionally, the formation of this gap has released the airtightness, causing side leakage of the aerosol contents.
[0055]
  However, in the push button of the present invention, the engagement cylinder (28) provided inside the fitting portion (26) is inserted into the inner peripheral surface (27) of the upper end portion (12) of the stem (10), and this engagement is performed. The tapered surface (30) of the tube (28) is brought into close contact. Since this tapered surface (30) is formed in a conical shape having a small diameter on the stem (10) insertion side and a large diameter on the push button main body (25) side, as shown in FIG. 5, the push button main body (25) Even if the taper is inclined, the tapered surface (30) is securely attached to the inner peripheral surface (27) of the upper end portion (12).
[0056]
  Accordingly, it is possible to maintain the airtightness between the push button main body (25) and the stem (10) and to prevent side leakage of the aerosol contents. In addition, the waste of the aerosol contents can be eliminated, and the human body and the environment can be prevented from being contaminated, thereby enabling comfortable use. Moreover, since it is a conical taper surface (30), even if the push button body (25) is inclined in any direction, it firmly adheres to the inner peripheral surface (27) of the upper end portion (12) of the stem (10). Thus, the airtightness is not impaired.
[0057]
  Further, in the present invention, since the airtightness is maintained by the engagement cylinder (28), it is not necessary to make the fitting portion (26) and the stem (10) tightly fitted, and the push button body (25) and the stem ( 10) can be easily connected and disconnected. Then, in order to remove the push button body (25) from the upper end (12) of the stem (10), the lever (34) is held and pulled up in the direction opposite to the stem (10), as shown in FIG. As described above, the push button main body (25) is rotationally moved in the separation direction around the hinge portion (32) and separated from the upper end portion (12) of the stem (10).
[0058]
  In use, the push button body (25) is rotated in the stem (10) direction to connect the fitting portion (26) and the upper end portion (12) of the stem (10). At this time, since a large force is not required for the connection, the stem (10) is not pushed down by mistake, and erroneous injection of the aerosol contents can be prevented. Therefore, the attaching / detaching work can be performed safely. Further, not only during use, but also during the manufacture of aerosol products, the assembly work is facilitated and erroneous injection of the aerosol contents is prevented, thereby improving production efficiency and work safety.
[0059]
【The invention's effect】
  Since the present invention is configured as described above, when the stem is pushed down by the push button for injecting aerosol contents, the taper surface of the engagement cylinder can be used regardless of whether the push button is inclined in any direction different from the axial direction of the stem. Can securely adhere to the inner peripheral surface of the upper end of the stem, maintain the airtightness between the push button and the stem, and prevent the side leakage of the aerosol contents well. Therefore, it is possible to prevent contamination of the human body and the surroundings due to side leakage of the aerosol contents, and it is possible to use the aerosol contents that are comfortable and efficient. In addition, such an engagement cylinder that is in close contact with the inner peripheral surface of the stem is a pushbutton having a hinge part that tilts and pushes down the pushbutton body.Also apply toIt is.
[0060]
  In addition, the close contact between the tapered surface of the engagement cylinder and the inner peripheral surface of the upper end of the stem prevents side leakage of the aerosol contents. Can be performed easily. Therefore, when the consumer uses the product by attaching and detaching the push button as necessary, or when the manufacturer performs the assembly work, the work can be easily performed, and the stem is not pushed down by mistake, It is possible to prevent erroneous injection of aerosol contents. Therefore, the work efficiency and safety of the detachment work can be improved.
[0061]
  In addition, when the push button of the present invention is used for an aerosol product that can be switched between a small amount injection and a large amount injection of the aerosol contents, when the small amount injection is performed by pressing the push button small, the push button is largely pressed. Even if a large amount of injection is performed, the airtightness between the stem and the push button is kept good, and the lateral leakage of the aerosol contents is surely prevented, so that the aerosol contents can be efficiently and comfortably injected.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a first embodiment of the present invention.
FIG. 2 is an enlarged view of a connecting portion between a push button main body and a stem in FIG.
FIG. 3 is a cross-sectional view of a state where a small amount of aerosol content is injected by pushing down a push button main body.
FIG. 4 is a cross-sectional view of a state in which a large amount of aerosol content is being ejected by largely pushing down the push button body.
5 is an enlarged view of a connection portion between the push button main body and the stem in FIG. 4;
FIG. 6 is a cross-sectional view of the push button body in a lifted state.
FIG. 7 is a cross-sectional view showing a valve mechanism at the time of small amount injection.
FIG. 8 is a cross-sectional view showing a valve mechanism during mass injection.
[Explanation of symbols]
  1 Aerosol container
  2 lid
  3 Stem gasket
  4 Housing
  6 Upper room
  7 Lower room
  8 insertion port
10 stem
15 Lower end pressing part
16 switching valve
17 Pressed part
18 Small distribution port
21 Valve seat
24 Valve mechanism
25 Pushbutton body
26 Fitting part
27 Inner surface
28 engaging cylinder
30 Tapered surface
32 Hinge part
33 Fixed body
34 Lever part
35 Movement range
36 Locking piece

Claims (4)

By connecting one side of the aerosol content in the injection direction to a fixed body to the aerosol container via a hinge part, and pressing the lever part protruding from the opposite side of the hinge part with fingers, the hinge part is A cylindrical fitting part that inserts and fits the upper end of the stem of the valve mechanism is provided on the lower surface of the push button main body that allows the stem to be pressed down as a fulcrum , and the upper end of the stem is placed inside the fitting part. An engagement cylinder that is inserted and closely attached to the inner peripheral surface of the engagement cylinder protrudes, and on the contact side with the inner peripheral surface of the stem upper end of the engagement cylinder, the stem insertion side is made smaller than the inner diameter of the stem and the push button main body side An aerosol push button having a conical tapered surface with an outer diameter larger than the inner diameter of the stem. 2. The aerosol push button according to claim 1, wherein an inner diameter of the fitting portion of the push button main body having the hinge portion is set to plus 5.0% to minus 2.5% with respect to the outer diameter of the upper end of the stem. The valve mechanism is formed so that the injection amount can be adjusted according to the amount of sliding down of the stem, enabling the lever part to be pushed in a small range in the movement range of the lever part when the push button body is pressed, and the lever part to be pushed down greatly The locking piece that disables the movement is arranged so that it can move freely.When a small amount of aerosol content is injected, the locking piece is placed so as to face the moving range of the lever part, and the push button body can be pressed slightly. , during mass ejection of aerosol content is to remove the locking piece from moving range of the lever portion, claim 1, or 2 for aerosol push button, characterized in that allowed the large pressing the push button body. The valve mechanism forms an upper chamber and a lower chamber through an insertion port in a housing whose upper end is fixed inside the lid of the aerosol container, and the upper end of the stem is closed by a stem gasket in the upper chamber. A stem that protrudes outward from the bottom and that has a lower end pressing part provided at the lower end facing the insertion opening is mounted so that it can move up and down, and in the lower chamber, it is exposed to the lower end pressing part of the stem and pressed A switching valve that protrudes from the insertion port to the upper chamber side is mounted so that it can be moved up and down. A small flow port that connects the upper chamber and the lower chamber is opened in this switching valve, and the switching valve is inserted into the valve. By pressing and urging the seat, the insertion port is closed except for communication with a small amount of flow port. When the stem is pressed small, the switching valve is not pressed, and when the stem is largely pressed, the switching valve is operated by the lower end pressing part of the stem. Pressed Pressing the aerosol pushbutton according to claim 3, characterized in that the possible injection of large quantities of the contents by opening the insertion opening.

Images