JP7304763B2 - Injection member for aerosol container and injection device provided with the same - Google Patents

Description

TECHNICAL FIELD The present invention relates to an injection member attached to an aerosol container and an injection device having the same.

Patent Document 1 describes an injection member for an aerosol container. This injection member has a projecting body for massaging the surface to be injected, and the force of pressing the projecting body against the surface to be injected pushes down the stem to inject the contents from the aerosol container. .

JP 2016-77323 A

However, an urging member such as a spring that urges the stem generally has a strong repulsive force in order to prevent unintended jetting. It is necessary to press the projecting body against the jetted surface with a certain amount of force. Therefore, when the jetted surface is a soft part of the body, the user may feel pain or discomfort.

SUMMARY OF THE INVENTION An object of the present invention is to provide an injection member for an aerosol container that can be injected with a small pressing force, and an injection device provided with this injection member.

The injection member for the aerosol container of the present invention includes body members 51, 71, 81 attached to the container bodies 30, 30A of the aerosol containers 20, 20A, and first lever members 53, 73, 83 movably attached; second lever members 54, 84 whose one ends 54a, 84a are rotatably attached to body members 51, 71, 81; pressing operation members 55, 75, 85 that protrude from 71, 81, are pressed against the jetted surface S, and transmit the pressing force to the first lever members 53, 73, 83; , 83 are provided with abutment portions 53d, 73d, 83d that contact the second lever members 54, 84 in the rotational direction and transmit the pressing force to the second lever members 54, 84, and the second lever member 54, 84 is characterized by having push-down portions 54d, 82c that push down the stems 41a of the aerosol containers 20, 20A in conjunction with the pressing of the push operation members 55, 75, 85 against the sprayed surface S.

Moreover, it is preferable that a stopper (51f) is provided to maintain the protruding state of the pressing operation member 55 from the main body member 51. As shown in FIG. Moreover, it is preferable that a turning mechanism T is provided to change the direction of the pressing force and use it as a force for pushing down the stem 41a. In particular, it is preferable that the pressing operation member 75 protrudes from the side of the main body member 71 and the turning mechanism T is configured by rotatably attaching the pressing operation member 75 to the main body member 71 . Further, the pressing operation member 85 may have a plurality of protrusions 85b for massage. Further, it is preferable that injection nozzles 52, 72, 82 for attachment to the stem 41a are provided, and that the injection nozzles 52, 72 are opened in the pressing direction of the pressing operation members 55, 75, 85. As shown in FIG.

The injection device of the present invention is characterized by including any of the injection members 50, 70, 80 for an aerosol container described above and an aerosol container 20, 20A.

Since the injection member for an aerosol container of the present invention comprises a first lever member and a second lever member, that is, constitutes a two-step lever, the content from the aerosol container is ejected (pressing down of the stem). At this time, it is possible to reduce the pressing force of the pressing operation member against the jetted surface.

When the pressing operation member is provided with a stopper that maintains the projecting state from the main body member, a constant distance can be secured between the main body member and the sprayed surface, and the contents can be evenly applied in a stable manner. be able to. If a turning mechanism is provided to change the direction of the pressing force and use it as the downward force of the stem, the pressing direction of the pressing member can be determined regardless of the downward direction of the stem. When the pressing operation member protrudes from the side of the body member and the turning mechanism is configured by rotatably attaching the pressing operation member to the body member, the pressing force can be applied to push down the stem with a simple configuration. can be power. When the pressing operation member has a plurality of massage protrusions, the jetted surface can be massaged while the content is being applied to the jetted surface. When an injection nozzle for attachment to the stem is provided and the injection nozzle is open in the pressing direction of the pressing member, it is easy to eject the contents toward the portion pressed by the pressing member.

Since the injection device of the present invention includes the injection member having the two-step lever, it is possible to reduce the pressing force of the pressing member against the injection surface during injection. In addition, since the content can be applied simply by holding the aerosol container and pressing the pressing member against the surface to be sprayed, there is no need to perform the spraying operation with the fingertips, making it easy for the elderly to use.

It is a perspective view showing one embodiment of the injection device of the present invention. FIG. 2A is a side cross-sectional view of the injection device of FIG. 1 , FIG. 2A shows before the pressing operation member is pressed, and FIG. 2B shows the time when the pressing operation member is pressed. FIG. 3A is a partially cutaway perspective view of the injection device of FIG. 1 , FIG. 3A shows before the pressing operation member is pressed, and FIG. 3B shows the time when the pressing operation member is pressed. FIG. 3 is a perspective view showing another embodiment of the injection device of the present invention; 5A is a side cross-sectional view of the injection device of FIG. 4, FIG. 5A is before the pressing operation member is pressed, and FIG. 5B is the time when the pressing member is pressed. FIG. 6A is a partially cut-away perspective view of the injection device of FIG. 4 , FIG. 6A shows before the pressing operation member is pressed, and FIG. 6B shows the time when the pressing operation member is pressed. FIG. 7A is a perspective view and FIG. 7B is a plan view showing another injection member used in the injection device of the present invention. FIG. 8A is a side cross-sectional view of an injection device using the injection member of FIG. 7, FIG. 8A showing before the pressing operation member is pressed, and FIG. 8B showing the time when the pressing operation member is pressed.

The injection device 10 shown in FIGS. 1 and 2 includes an aerosol container 20 and an injection member 50 for opening and closing a valve assembly 40 of the aerosol container 20 .

The aerosol container 20 includes a container body 30 that stores contents, and a valve assembly 40 that closes the opening of the container body 30 . The aerosol container 20 is filled with a stock solution and a propellant (gas) for injecting the stock solution as contents.

As shown in FIG. 1, the container body 30 has a cylindrical shape with a bottom, and has a bottom portion 30a, a body portion 30b, and a shoulder portion 30c. The top end is open. The container body 30 is made of metal, and has a bead portion 30d at its upper end, as shown in FIG. A groove portion 30e is formed between the bead portion 30d and the shoulder portion 30c. The container body 30 may be made of synthetic resin.

The valve assembly 40 includes a valve mechanism 41 , a housing 42 that accommodates the valve mechanism 41 , and a mounting cup 43 that fixes the housing 42 to the container body 30 .

The valve mechanism 41 includes a stem 41a having a stem hole, a stem rubber (not shown) that closes the stem hole, and a biasing member (not shown) that always biases the stem 41a and keeps the stem hole closed by the stem rubber. not). By pushing down the stem 41a (pushing it toward the housing 42), the valve mechanism 41 releases the blockage of the stem hole by the stem rubber, allowing the contents contained in the aerosol container 20 to be injected.

The housing 42 has a cylindrical shape with a bottom, and accommodates the valve mechanism 41 in its internal space.

The mounting cup 43 is a metal lid that is fixed to the bead portion 30d of the container body 30 by crimping to keep the inside of the aerosol container airtight, and holds the housing 42 and the valve mechanism 41 at its central portion. The outer peripheral portion is crimped to the bead portion 30 d of the container body 30 and fixed to the container body 30 . Alternatively, the container body 30 and the mounting cup 43 may be threaded to be screwed together.

The injection member 50 includes a body member 51 attached to the upper portion (the end on the stem 41a side) of the container body 30 of the aerosol container 20, an injection nozzle 52 attached to the stem 41a, and one end 53a rotatable to the body member 51. a first lever member 53 attached to the main body member 51, a second lever member 54 having one end 54a rotatably attached to the main body member 51, and protruding from the main body member 51, pressed against the jetted surface S, and pressing force to the first lever member 53. The injection nozzle 52 , the first lever member 53 and the second lever member 54 are housed inside the body member 51 . The pressing operation member 55 can move in and out of the body member 51 .

The body member 51 is substantially cylindrical and has an upper base 51a. An engaging portion 51 c that engages with the groove portion 30 e of the container body 30 is provided on the inner peripheral surface of the lower portion 51 b of the main body member 51 . The outer diameter of the lower portion 51b is substantially the same as the outer diameter of the trunk portion 30b of the container body 30. As shown in FIG. On the other hand, the upper portion 51d of the body member 51 has a larger diameter than the lower portion 51b. The upper base 51a is provided with an opening 51e for projecting a portion of the first lever member 53 and the pressing member 55 to the outside and for ejecting the contents.

The injection nozzle 52 includes a nozzle portion 52a in which a passage for passing the content is formed, and a projecting portion 52b extending laterally from the outer surface of the nozzle portion 52a. The lower end side (stem 41a side) of the passage is enlarged in diameter so as to be externally fixed to the stem 41a. This injection nozzle 52 is attached straight to the stem 41a. Moreover, it is housed within the main body member 51 and does not protrude from the opening 51e.

The first lever member 53 is arranged so as to cover the stem 41a in plan view, and one end 53a thereof is pivotally supported on the inner peripheral surface of the upper portion 51d of the main body member 51 by a shaft 60 perpendicular to the direction in which the stem 41a is pushed down. ing. An insertion hole 53b for inserting the injection nozzle 52 is provided at a position overlapping the stem 41a. A substantially spherical pressing member 55 is integrated with the other end 53c side of the first lever member 53 . The first lever member 53 has a contact portion 53 d that contacts the second lever member 54 in the rotational direction and transmits the pressing force to the second lever member 54 . The contact portion 53d is located on the lower surface between the pivotally supported one end 53a and the insertion hole 53b.

The second lever member 54 is positioned below the first lever member 53 (on the aerosol container 20 side). In a plan view, one end 54a of the second lever member 54 is located on the side of the other end 53c of the first lever member 53 (the side of the pressing operation member 55), and the other end 54c of the second lever member 54 1 located on the one end 53 a side of the lever member 53 . The second lever member 54 has a push-down portion 54d that pushes down the stem 41a of the aerosol container 20 in conjunction with the pressing of the push operation member 55 against the sprayed surface S. As shown in FIG. One end 54a of the second lever member 54 is supported on the lower portion 51b of the main body member 51 by a shaft 61 perpendicular to the pushing direction of the stem 41a and parallel to the shaft 60 that supports the first lever member 53. As shown in FIG. More specifically, it is pivotally supported by a bracket portion 51f extending from the lower portion 51b of the body member 51 . The bracket portion 51f also functions as a stopper that restricts excessive rotation of the first lever member 53 and maintains the protruding state of the pressing operation member 55 from the main body member 51 (see FIG. 2b). The other end 54c of the second lever member 54 is in contact with the contact portion 53d of the first lever member 53, and interlocks with the rotation of the first lever member 53 (clockwise rotation in FIG. 2). 2 The lever member 54 is adapted to rotate. The second lever member 54 is also arranged so as to cover the stem 41a in plan view, and a notch 54b for inserting the nozzle portion 52a of the injection nozzle 52 is provided at a position overlapping the stem 41a. . The width of the notch 54b is smaller than the protrusion 52b of the injection nozzle 52, and the protrusion 52b cannot be inserted. Therefore, the edge around the notch 54b serves as a push-down portion 54d for pushing down the stem 41a when the second lever member 54 rotates.

Next, a method of injecting contents using the injection member 50 will be described. As shown in FIGS. 2A and 3A , in a non-operating state in which the pressing member 55 is not pressed against the jetted surface S, the pressing member 55 protrudes from the upper end (top surface) of the body member 51 . When the projecting pressing member 55 is pressed against the jetted surface S, the first lever member 53 rotates around the shaft 60 . Then, in conjunction with this, the other end 54c of the second lever member 54 is pushed down by the first lever member 53, and the second lever member 54 also rotates around the shaft 61. As shown in FIG. As the second lever member 54 rotates, the push-down portion 54d pushes down the projecting portion 52b of the injection nozzle 52, and as a result, the stem 41a is pushed down and the contents are injected (see FIGS. 2B and 3B). The injection nozzle 52 is open in the pressing direction of the pressing member 55, and the contents are injected onto the surface S to be injected.

In this series of operations, the pressing operation member 55 acts as a first point of force, the one end 53a (shaft 60) of the first lever member 53 acts as a first fulcrum, the contact portion 53d acts as a first point of action, and the second lever member The other end 54c of the second lever member 54 acts as a second point of force, the one end 54a (shaft 61) of the second lever member 54 acts as a second fulcrum, and the push-down portion 54d acts as a second point of action. That is, the first lever member 53 and the second lever member 54 each constitute a second type lever (a lever having a point of action between the force point and the fulcrum), which is a so-called two-stage lever. Therefore, the contents can be ejected with a smaller force than when the stem 41a is simply pushed down.

Further, as shown in FIG. 2B, the pressing operation member 55 abuts against the stopper (bracket portion 51f), so that the pressing operation member 55 is maintained in a protruding state from the main body member 51. A certain distance can be secured between the ejection surface S and the contents can be evenly applied. Furthermore, due to the biasing force of the biasing member and the elastic force (repulsive force due to bending) of the first lever member 53 and the second lever member 54, the pressing operation member 55 tries to return to the original position before the rotation. A moderate repulsive force is generated. Therefore, when the user holds the aerosol container 20 lightly and presses the pressing member 55 against the surface S to be sprayed, a bouncy sensation can be obtained, enabling rhythmic application. As a result, even if the user uses the injection device rhythmically, a constant distance is secured between the injection nozzle 52 and the surface S to be injected, so that the contents can be applied in a stable manner.

Next, the injection device 10A shown in FIG. 4 will be described. In the injection device 10A of FIG. 4, the aerosol container 20 is the same as the injection device 10 of FIG. Therefore, the aerosol container 20 is given the same reference numerals and description thereof is omitted, and the injection member 70 will be described below.

As shown in FIG. 5, the injection member 70 includes a body member 71 attached to the upper portion (the end on the stem 41a side) of the container body 30 of the aerosol container 20, an injection nozzle 72 attached to the stem 41a, and one end 73a. A first lever member 73 rotatably attached to the main body member 71, a second lever member 54 having one end 54a rotatably attached to the main body member 71, and projecting from the main body member 71 to the jetted surface S and a pressing operation member 75 that is pressed against and transmits the pressing force to the first lever member 73 . The injection nozzle 72 , the first lever member 73 and the second lever member 54 are housed inside the body member 71 . The pressing operation member 75 can move in and out of the body member 71 .

As shown in FIG. 4, the main body member 71 has an appearance in which a cylinder is connected to the lower end of one longitudinal end of a slanted spheroid. An engaging portion (not shown) that engages with the groove portion 30 e of the container body 30 is provided on the inner peripheral surface of the cylindrical portion 71 b of the main body member 71 . The outer diameter of the cylindrical portion 71b is substantially the same as the outer diameter of the trunk portion 30b of the container body 30. As shown in FIG. On the other hand, the spheroidal portion 71a is larger than the cylindrical portion 71b, and the other end of the spheroidal portion 71a protrudes forward. Hereinafter, the projecting direction will be referred to as the front, and the direction opposite to the projecting direction will be referred to as the rear. An opening 71e is provided in front of the spheroidal portion 71a for projecting the pressing operation member 75 to the outside and for injecting the contents. A bracket portion 71f for rotatably attaching one end 54a of the second lever member 54 is provided in front of the cylindrical portion 71b (see FIG. 5).

The injection nozzle 72 includes a nozzle portion 72a formed therein with a passage for passing the contents, and a projecting portion 72b extending laterally from the outer surface of the nozzle portion 72a. The lower end side (stem 41a side) of the passage is enlarged in diameter so as to be externally fixed to the stem 41a. The injection nozzle 72 is bent into a substantially L shape so that the tip thereof faces the opening 71 e of the main body member 71 . The tip is housed inside the body member 71 and does not protrude to the outside. 72c is a rib.

The first lever member 73 is arranged so as to cover the stem 41a in a plan view, and one end 73a thereof is supported behind the main body member 71 by a shaft 60 perpendicular to the direction in which the stem 41a is pushed down. A notch 73b for inserting the injection nozzle 72 is provided at a position overlapping with the stem 41a, and the other end 73c is bifurcated. A rib 73e is provided on each upper surface to suppress bending. The first lever member 73 has a contact portion 73 d that contacts the second lever member 54 in the rotational direction and transmits the pressing force to the second lever member 54 . The contact portion 73d is located on the lower surface between the pivotally supported one end 73a and the notch 73b.

The second lever member 54 is similar to that of the injection member 50 of FIG. Therefore, the same reference numerals are used and detailed descriptions thereof are omitted.

The pressing operation member 75 includes a substantially spherical pressing portion 75a and an arm portion 75b extending rearward from the pressing portion 75a. A lower portion of the pressing portion 75a is rotatably attached to a lower portion of the opening portion 71e. Specifically, it is supported by a shaft 62 parallel to the shaft 60 . A through hole 75c for accommodating the tip of the injection nozzle 72 is provided in the pressing portion 75a. The through hole 75c has a tapered shape that widens in the vertical direction toward the rear so as not to interfere with the injection nozzle 72 even when the pressing member 75 rotates. The lower surface of the arm portion 75b is in contact with the other end 73c of the first lever member 73 (the end opposite to the pivoted end 73a). The arm portion 75b is divided into two so as not to interfere with the injection nozzle 72. As shown in FIG.

Next, a method of injecting contents using the injection member 70 will be described. As shown in FIG. 5A , in a non-operating state in which the pressing member 75 is not pressed against the jetted surface S, the pressing portion 75 a protrudes from the side (front) of the body member 71 . When the projecting pressing portion 75a is pressed against the jetted surface S, the pressing portion 75a retracts into the body member 71 and rotates around the shaft 62 as shown in FIG. 5B. Then, the arm portion 75b pushes the other end 73c of the first lever member 73 downward. That is, the direction of the pressing force generated when the pressing member 75 is pressed against the jetted surface S changes from the horizontal direction to the vertical direction, causing the first lever member 73 to rotate around the shaft 60 . In conjunction with this, the other end 54 c of the second lever member 54 is pushed down by the first lever member 73 , and the second lever member 54 also rotates around the shaft 61 . By rotating the second lever member 54, the push-down portion 54d pushes down the projecting portion 72b of the injection nozzle 72, and as a result, the stem 41a is pushed down and the contents are injected. The injection nozzle 72 is open in the pressing direction of the pressing member 75, and the contents are injected onto the surface S to be injected.

In this series of operations, the other end 73c of the first lever member 73 acts as a first point of force, the one end 73a (shaft 60) of the first lever member 73 acts as a first fulcrum, and the contact portion 73d acts as a first point of action. , the other end 54c of the second lever member 54 acts as a second point of force, one end 54a of the second lever member 54 acts as a second fulcrum (shaft 61), and the push-down portion 54d acts as a second point of action. That is, the first lever member 73 and the second lever member 54 each constitute a second type lever (a lever having a point of action between the force point and the fulcrum), which is a so-called two-step lever. Therefore, the contents can be ejected with a smaller force than when the stem 41a is simply pushed down.

Further, by rotatably attaching the lower portion of the pressing operation member 75 to the main body member 71, the direction of the pressing force can be changed from the horizontal direction to the vertical direction. Since the turning mechanism T is configured to convert the force in the direction substantially orthogonal to the stem 41a into the downward force of the stem 41a, even if the pressing direction is the horizontal direction, the contents can be jetted with a small force. It should be noted that when the pressing operation member 75 stops pressing against the jetted surface S, the first lever member 73, the second lever member 54, and the pressing operation member 75 are pressed by the biasing force of the biasing member that biases the stem 41a. returns to the position before rotation. The injection member 70 also has an urging force of the urging member and an elastic force (repulsive force due to bending) of the first lever member 73 and the second lever member 54, so that the pressing operation member 75 is in the original state before rotation. A moderate repulsive force is generated to try to return to the position. Therefore, by lightly holding the aerosol container 20 and pressing the pressing operation member 75 against the sprayed surface S such as the scalp, a bouncy sensation can be obtained, enabling rhythmical application and massage. As a result, even if the user uses the injection device rhythmically, a constant distance is secured between the injection nozzle 52 and the surface S to be injected, so that the contents can be applied in a stable manner.

Next, the injection device 10B shown in FIG. 8 will be described. The injection device 10B of FIG. 8 includes an aerosol container 20A and an injection member 80 for opening and closing the valve assembly 40 of the aerosol container 20A.

The aerosol container 20A includes a container body 30A that stores contents, and a valve assembly 40 that closes the opening of the container body 30A. The aerosol container 20A is filled with a stock solution and a propellant (gas) for injecting the stock solution as contents.

The container body 30A has a cylindrical shape with a bottom, and has a bottom (not shown), a body 30b, and a shoulder 30c. The upper end is open. The container body 30A is made of metal and has a bead portion 30d at its upper end. Further, the container body 30A is a so-called three-piece can, and a groove portion 30e is formed at the joint between the body portion 30b and the shoulder portion 30c. The material of the container main body 30A may be synthetic resin.

Valve assembly 40 is similar to that of FIG. Therefore, the same reference numerals are used and detailed descriptions thereof are omitted.

As shown in FIG. 8, the injection member 80 includes a body member 81 attached to the upper portion (the end on the stem 41a side) of the container body 30A of the aerosol container 20A, an injection nozzle 82 attached to the stem 41a, and one end 83a. A first lever member 83 rotatably attached to the main body member 81, a second lever member 84 having one end 84a rotatably attached to the main body member 81, and projecting from the main body member 81 to the jetted surface S and a pressing operation member 85 that is pressed against and transmits the pressing force to the first lever member 83 . The injection nozzle 82 , the first lever member 83 and the second lever member 84 are housed inside the body member 81 . The pressing operation member 85 can move in and out of the body member 81 .

The main body member 81 is substantially cylindrical as shown in FIG. 7, and its outer diameter is slightly larger than the outer diameter of the trunk portion 30b of the container main body 30A. The upper end of the body portion 81 forms an opening 81e for projecting the pressing operation member 85 to the outside and for injecting the contents. An engaging portion 81c that engages with the groove portion 30e of the container body 30A is provided on the inner peripheral surface of the body member 81 near the lower end (see FIG. 8). Further, the inner peripheral surface of the body member 81 is provided with a first bracket portion 81f and a second bracket portion 81g. The first bracket portion 81f is for rotatably attaching one end 83a of the first lever member 83 . The second bracket portion 81g is for rotatably attaching one end 84a of the second lever member 84 . The second bracket portion 81g is provided on the side opposite to the first bracket portion 81f in plan view. A guide portion 81h for guiding the rotation of the other end 83c of the first lever member 83 is provided on the inner peripheral surface of the main body member 81 near the upper end portion. The guide portion 81h is formed by a groove extending vertically. Note that the guide portion 81h and the second bracket portion 81g are positioned at the same position in plan view.

The injection nozzle 82 includes a nozzle portion 82a formed with a passage for passing the contents inside, and a stem insertion hole 82b for inserting the stem 41a. The stem insertion hole 82b communicates with the passage. The stem insertion hole 82b has a larger diameter than the passage, and a stepped portion 82c is formed between the passage and the stem insertion hole 82b. This injection nozzle 82 is integrated with the second lever member 84 . Therefore, it can be said that the second lever member 84 is provided with the passage, the stem insertion hole 82b, and the step portion 82c. Moreover, it is arranged slightly obliquely with respect to the stem 41a. This is because the injection nozzle 82 is straightened with respect to the stem 41a at the time of pressing, considering that the second lever member 84 rotates when the pressing operation member 85 is pressed against the surface S to be injected. be. Further, the injection nozzle 82 is housed inside the main body member 81 and does not protrude from the opening 81e.

The first lever member 83 is arranged to cover the stem 41a in a plan view, and one end 83a thereof is pivotally supported by the main body member 81 by a shaft 60 perpendicular to the direction in which the stem 41a is pushed down. More specifically, it is pivotally supported by the first bracket portion 81f. An insertion hole 83b for inserting the injection nozzle 82 is provided at a position overlapping the stem 41a. A pressing operation member 85 having an annular shape in plan view is integrated with the upper surface of the first lever member 83 . The first lever member 83 has a contact portion 83 d that contacts the second lever member 84 in the rotational direction and transmits the pressing force to the second lever member 84 . The contact portion 83d is located on the lower surface between the pivotally supported one end 83a and the insertion hole 83b.

The second lever member 84 is positioned below the first lever member 83 (on the side of the aerosol container 20A). Also, in a plan view, the one end 84a of the second lever member 84 is located on the side of the other end 83c of the first lever member 83, and the other end 84c of the second lever member 84 is the one end 83a of the first lever member 83. located on the side. The second lever member 84 is also arranged so as to cover the stem 41a in plan view. The second lever member 84 has a push-down portion that pushes down the stem 41a of the aerosol container 20A in conjunction with the pressing of the push operation member 85 against the sprayed surface S. As shown in FIG. The portion that functions as the push-down portion is the stepped portion 82c. One end 84a of the second lever member 84 is supported on the main body member 81 by a shaft 61 perpendicular to the direction in which the stem 41a is pushed down and parallel to the shaft 60 that supports the first lever member 83. As shown in FIG. More specifically, it is pivotally supported by the second bracket portion 81g. The other end 84c side of the second lever member 84 is in contact with the contact portion 83d of the first lever member 83, and interlocks with the rotation of the first lever member 83 (clockwise rotation in FIG. 8A). The second lever member 84 is adapted to rotate.

The pressing operation member 85 includes a base portion 85a that is substantially annular in plan view, and a projecting portion 85b that projects upward from the base portion 85a. The protruding portion 85b is annularly arranged so as to surround the injection nozzle 82 in plan view. By providing the pressing operation member 85 with a plurality of projecting portions 85b in this way, it is possible to massage the surface S to be injected while applying the content to the surface S to be injected.

Next, a method of injecting contents using the injection member 80 will be described. As shown in FIG. 8A , in a non-operating state in which the pressing member 85 is not pressed against the jetted surface S, the projecting portion 85 b of the pressing member 85 protrudes from the upper end (top surface) of the body member 81 . The first lever member 83 rotates around the shaft 60 when the protruding portion 85b is pressed against the jetted surface S. As shown in FIG. Then, the other end 84 c of the second lever member 84 is pushed down by the first lever member 83 in conjunction with this, and the second lever member 84 also rotates around the shaft 61 . As the second lever member 84 rotates, the push-down portion (stepped portion 82c) pushes down the stem 41a to eject the contents (see FIG. 8B). The injection nozzle 82 is open in the pressing direction of the pressing member 85, and the contents are injected onto the surface S to be injected.

In this series of operations, the projecting portion 85b of the pressing member 85 acts as a first point of force, the one end 83a (shaft 60) of the first lever member 83 acts as a first fulcrum, and the contact portion 83d acts as a first point of action. The other end 84c of the second lever member 84 acts as a second point of force, the one end 84a (shaft 61) of the second lever member 84 acts as a second fulcrum, and the push-down portion (stepped portion 82c) acts as a second point of action. That is, the first lever member 83 and the second lever member 84 respectively constitute a second type lever (a lever having a point of action between the force point and the fulcrum), which is a so-called two-stage lever. Therefore, the contents can be ejected with a smaller force than when the stem 41a is simply pushed down.

In addition, due to the biasing force of the biasing member and the elastic force (repulsive force due to bending) of the first lever member 83 and the second lever member 84, the pressing operation member 85 tries to return to the original position before rotation. A moderate repulsive force is generated. Therefore, when the user holds the aerosol container 20A lightly and presses the pressing operation member 85 against the sprayed surface S, a bouncy sensation can be obtained, enabling rhythmic application. As a result, even if the user uses the injection device rhythmically, a constant distance is secured between the injection nozzle 82 and the surface S to be injected, so that the contents can be applied in a stable manner.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made within the scope of the invention. For example, in the embodiment of FIG. 4, the pressing operation member 75 and the first lever member 73 are not connected, but they may be connected by a method that does not transmit the bending moment or makes it difficult to transmit it. For example, if they are connected to each other via a hinge portion, the pressing operation member 75 and the first lever member 73 can be connected without transmitting the bending moment.

10, 10A, 10B Injector 20, 20A Aerosol container 30, 30A Container body 30a Bottom 30b Body 30c Shoulder 30d Bead 30e Groove 40 Valve assembly 41 Valve mechanism 41a Stem 42 Housing 43 Mounting cup 50 Injection member 51 Body member 51a Upper base 51b Lower portion 51c Engagement portion 51d Upper portion 51e Opening portion 51f Bracket portion 52 Injection nozzle 52a Nozzle portion 52b Projection portion 53 First lever member 53a One end 53b Insertion hole 53c Other end 53d Contact portion 54 Second lever member 54a One end 54b Notch 54c Other end 54d Depressing portion 55 Pressing member 60 Shaft 61 supporting the first lever member Shaft 62 supporting the second lever member Shaft 70 supporting the pressing member Jet member 71 Body member 71a Spherical portion 71b Cylindrical portion 71e Opening 71f Bracket portion 72 Injection nozzle 72a Nozzle portion 72b Protruding portion 72c Rib 73 First lever member 73a One end 73b Notch 73c Other end 73d Abutting portion 73e Rib 75 Pressing operation member 75a Pressing portion 75b Arm portion 75c Penetration Hole T Turning mechanism S Injection target surface 80 Injection member 81 Body member 81c Engaging portion 81e Opening 81f First bracket portion 81g Second bracket portion 81h Guide portion 82 Injection nozzle 82a Nozzle portion 82b Stem insertion hole 82c Stepped portion 83 First Lever member 83a One end 83b Insertion hole 83c Other end 83d Contact portion 84 Second lever member 84a One end 84c Other end 85 Pressing operation member 85a Base portion 85b Protruding portion

Claims (3)

a body member attached to the container body of the aerosol container;
a first lever member having one end rotatably attached to the body member;
a second lever member having one end rotatably attached to the body member;
a pressing operation member that protrudes from the main body member, is pressed against the jetted surface, and transmits the pressing force to the first lever member ;
an injection nozzle for attachment to the stem, which is open in the pressing direction of the pressing operation member ;
The first lever member has a contact portion that contacts the second lever member in the rotational direction and transmits the pressing force to the second lever member,
The second lever member has a push-down portion that pushes down the stem of the aerosol container in conjunction with the pressing of the pressing operation member against the jetted surface ,
1. An injection member for an aerosol container, wherein the push operation member has a massaging protrusion annularly arranged around the injection nozzle. 2. The injection member for an aerosol container according to claim 1, wherein the inner peripheral surface of the main body member is provided with a guide portion for guiding rotation of the first lever member . an injection member for an aerosol container according to claim 1 or 2 ;
and an aerosol container.

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