JP2007152276A - Injection device and injector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an injector switchable between a straight flow and an atomized flow wherein the injection pressure is reduced to decrease the rebound from an affected part in the straight flow and the sufficient injection pressure is secured to form a complete mist state in the atomized injection. <P>SOLUTION: In an injection device 300 freely switchable between the straight injection linearly injecting a liquid such as athlete's foot remedy to the affected part from an injection prot 400a and the atomized injection injecting to atomize the liquid mist-like, the liquid is immediately injected at a pressure as it is without increasing in the straight injection and the liquid is injected at one stretch after the pressure is increased to be accumulated in the atomized injection. For example, the liquid is injected from a injection port 400a of a nozzle member 400 by turning a button member 500 having the nozzle member 400 around a stem member 16 to the straight injection position or the atomized injection position to switch to the straight injection or the atomized injection. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an injector for injecting a liquid such as athlete's foot medicine in a container from an injection port toward an affected part. And in such an injector, it is related with the pump-type injection apparatus attached to the opening part of a container and injecting the liquid in a container toward the exterior.

  Conventionally, in an injector, it is possible to select a direct injection in which the liquid in the container is injected linearly from the injection port and a mist injection to be injected in the form of a mist. When intensive application is desired, the liquid in the container is directly sprayed toward the outside, and when it is desired to apply uniformly over a wide range, there is a mist spray.

  Such an injector includes one nozzle member common to direct injection and mist injection, two injection passages of a direct injection passage and a mist injection passage, and an injection port for direct injection. In addition to the two nozzle members of the nozzle member having the nozzle and the nozzle member having the spray port for the mist injection, there are some having a common injection passage for the direct injection and the mist injection. In the former, for example, a button member having a nozzle member is rotated around a stem member to be a direct injection position or a mist injection position, and liquid is injected from an injection port of the nozzle member by switching between direct injection and mist injection. .

JP 2003-144987 A Japanese Utility Model Publication No. 62-136255 Japanese Utility Model Publication No. 62-136258 Japanese Utility Model Publication No. 62-136259

  However, all of these types of conventional injectors have a high injection pressure during direct injection, rebound when applied to the affected area, and a sufficient mist state due to insufficient injection pressure during mist injection. There was a problem that could not be done.

  Accordingly, an object of the present invention is an injector that can switch between direct injection and mist injection.In the case of direct injection, the injection pressure is reduced to reduce the rebound from the affected area, and in the case of mist injection. Another object of the present invention is to provide an injection device capable of securing a sufficient injection pressure and obtaining a complete mist state, and an injector provided with the same attached to a container.

  Therefore, in order to achieve the above-described object, the first aspect of the present invention is capable of switching between direct injection in which liquid such as athlete's foot medicine is linearly injected from the injection port and fog injection in which mist is injected. In the injection device, the liquid is immediately injected at a direct pressure without increasing the pressure when the direct injection is performed, and the pressure is increased at the time of increasing the pressure when the mist injection is performed. For example, a button member that is an operation member is provided with a nozzle member having an injection port, and the button member having the nozzle member is rotated around a stem member that is a liquid ejection pipe to be a direct injection position or a fog injection position. The liquid is ejected from the ejection port of the nozzle member by switching between direct injection and fog spray.

  A piston member that is reciprocally movable in the axial direction by being placed in the cylinder member, forming a pressure chamber in the cylinder member, and penetrating through the center of the tubular stem member and projecting the tip from the stem member; A first communicating hole and a second communicating hole, which covers the distal end of the stem member and presses the distal end of the piston member to close the second communicating hole, and communicates with the first communicating hole between the distal end of the stem member; A cap-type intermediate member that divides the space; a direct injection passage that passes liquid when performing direct injection; and a mist injection passage that passes liquid when performing mist injection; around the stem member via the intermediate member A button that divides a second space that communicates with the mist injection passage between the intermediate member and the intermediate injection member when mounted rotatably, and that communicates with the first space via the first communication hole when the direct injection position is set. A member.

  The button member has a nozzle member storage hole that opens to the peripheral surface and attaches the nozzle member, a center pole that protrudes outward from the center of the nozzle member storage hole, and a center pole that faces outward from the inside. And a mist injection passage that penetrates from the inside to the nozzle member housing hole around the center pole.

  At this time, the stroke when the stem member is pushed in with the button member as the direct injection position may be regulated smaller than the stroke when the stem member is pushed in with the button member as the fog injection position.

  The stroke when the stem member is pushed in with the button member as the predetermined rotation position may be regulated to be smaller than the stroke when the stem member is pushed in with the button member as another rotation position.

  In order to achieve the above-mentioned object, a second aspect of the present invention is characterized in that an injector is provided with the above-described injection device attached to a container.

  According to the first aspect of the present invention, in the injection device that injects the liquid from the injection port of the nozzle member by the direct injection or the mist injection, the liquid is injected at the direct pressure when the direct injection is performed, and the accumulated pressure when the mist injection is used. In the case of direct injection, the injection pressure is reduced to reduce the rebound from the affected area, and in the case of mist injection, a sufficient mist state can be secured and a complete mist state can be obtained. .

  Here, the button member having the nozzle member is rotated around the stem member so as to be in the direct injection position or the mist injection position, thereby switching between the direct injection and the mist injection so that the liquid is injected from the injection port of the nozzle member. Then, it is possible to accurately switch between direct injection and fog injection while ensuring the operation.

  A piston member that is reciprocally movable in the axial direction by being placed in the cylinder member, forming a pressure chamber in the cylinder member, and penetrating through the center of the tubular stem member and projecting the tip from the stem member; A first communicating hole and a second communicating hole, which covers the distal end of the stem member and presses the distal end of the piston member to close the second communicating hole, and communicates with the first communicating hole between the distal end of the stem member; A cap-type intermediate member that divides the space; a direct injection passage that passes liquid when performing direct injection; and a mist injection passage that passes liquid when performing mist injection; around the stem member via the intermediate member A button that divides a second space that communicates with the mist injection passage between the intermediate member and the intermediate injection member when mounted rotatably, and that communicates with the first space via the first communication hole when the direct injection position is set. With a member Switching straight injection and fog inject operate as reliably can be accurately.

  Further, the button member has a nozzle member receiving hole that opens to the peripheral surface and attaches the nozzle member, a center pole that protrudes outward from the center of the nozzle member receiving hole, and the center of the center pole from the inside. With a direct injection passage that penetrates outward and a mist injection passage that penetrates the nozzle member storage hole from the inside around the center pole, switching between direct injection and mist injection can be performed without greatly changing the conventional configuration. It can be done easily.

  At this time, if the stroke when pushing the stem member with the button member as the direct injection position is restricted to be smaller than the stroke when pushing the stem member with the button member as the fog injection position, the stroke is restricted to be small in the case of direct injection. Thus, the spray pressure can be reduced to further reduce the rebound from the affected area, and the amount of discharge can be reduced to prevent dripping from the affected area.

  According to the second aspect of the present invention, since the injector includes the above-described injection device attached to the container, in the case of direct injection, the injection pressure is reduced to reduce the rebound from the affected area, In the case of mist injection, it is possible to provide an injector capable of ensuring a sufficient injection pressure and obtaining a complete mist state.

The best mode for carrying out the present invention will be described below with reference to the drawings.
In FIG. 1, the external appearance of the reciprocating pump type injector provided with the injection device concerning this invention attached to a container is shown.

  Reference numeral 100 in the figure denotes a container. The container 100 is made of a plastic material into a bottle shape, and although not shown, a male screw is provided on the outer periphery of the mouth portion 100a, and in this example, an athlete's foot drug, which is a liquid, is housed as a content.

  The pump-type injection device 300 is attached to the mouth portion 100a of the container 100 by screwing the cap member 200 to the outer peripheral male screw. The injection device 300 is provided with a button member 500 having a nozzle member 400. The button member 500 is covered with a transparent top cap 600 and attached to the cap member 200.

  By the way, the cap member 200 is provided with a first mark 200a indicating the direct injection position and a second mark 200b indicating the fog injection position on the outer periphery of the upper edge. Further, the button member 500 is provided with a vertical instruction line 500 a passing through the position of the nozzle member 400.

In FIG. 2, the longitudinal cross-section of the pump type injection device 300 is shown.
As shown in the drawing, the injection device 300 roughly includes a piston member 12 in the cylinder member 10 and covers the cylinder member 10 with the cap member 200 described above, and the piston member 12 is inserted into the tubular stem member 16 to have a distal end. Is protruded from the stem member 16, the intermediate member 14 is put on the tip of the stem member 16, and the above-described button member 500 is attached to the stem member 16 via the intermediate member 14.

  Specifically, the cylinder member 10 is provided with a flange 10a and has an inlet 10b at the bottom. Then, the first cylinder member 20 is put on the lower part of the cylinder member 10. The first cylinder member 20 has an inverted suction port 20a and a valve seat 20b. A second cylinder member 22 is connected to the first cylinder member 20. The second cylindrical member 22 accommodates the ball valve 21 therein, and has an upright suction port 22a, a horizontal hole 22b, a plurality of vertical grooves 22c on the outer peripheral surface, and a valve seat 22d. The pipe member 23 is connected to the second cylinder member 22 in communication with the upright suction port 22a.

  As a result, a suction passage 24 that passes from the inverted suction port 20a and the erect suction port 22a through the horizontal hole 22b through the vertical groove 22c and reaches the inlet 10b is formed. Then, between the inverted suction port 20a and the lateral hole 22b, the valve seat 22d is closed so as to be freely opened and closed by the ball valve 21 dropped due to gravity.

  A coiled spring 25 is inserted into the cylinder member 10 and then the piston member 12 is inserted. The piston member 12 has a slightly smaller diameter above the middle shoulder portion 12a, a suction passage 12c is provided at the axis of the lower large diameter portion 12b, and an inlet hole 12d is provided through the suction passage 12c in the radial direction. The elastic valve 26 is attached around the large-diameter portion 12b so that the inlet hole 12d can be opened and closed. An elastic outlet valve 27 is mounted around the small diameter portion 12e on the shoulder portion 12a. The piston member 12 is placed in the cylinder member 10 so as to freely reciprocate in the axial direction, and is partitioned by the piston member 12, the elastic valve 26 and the elastic outlet valve 27 to form a pressure chamber 28 in the cylinder member 10. .

  The small-diameter portion 12 e of the piston member 12 is inserted through the center of the tubular stem member 16, and the tip projects from the stem member 16. Then, the sealing member 29 is put in the above-described cap member 200, and the cap member 200 is put on the cylinder member 10 and hung on the flange portion 10a from above. The cap member 200 is provided with a locking projection 200c that is straight upward from the top.

  Then, it attaches so that the intermediate member 14 may be covered on the front-end | tip of the stem member 16. FIG. The intermediate member 14 has a hooked cap shape, and includes a flange portion, a cylindrical portion that rises in a cylindrical shape, and a top portion. And the 1st communicating hole 14a opened to a surrounding surface is opened in a cylinder part, and the 2nd communicating hole 14b opened to a top surface is opened in the top part. An engagement cylinder portion 14c is provided on the periphery of the second communication hole 14b, and the tip of the piston member 12 pushed up by the spring 25 is pushed in to close the second communication hole 14b. A first space 30 communicating with the first communication hole 14a is defined. The locking protrusion 200c of the cap member 200 is inserted into the groove 14d of the collar portion, and the intermediate member 14 is prevented from rotating by the cap member 200.

  On the intermediate member 14, the aforementioned button member 500 is attached. The button member 500 has a finger rest 500b on the top surface. Further, the button member 500 includes a nozzle member storage hole 500c that opens to the peripheral surface, a center pole 500d that protrudes outward from the center of the nozzle member storage hole 500c, and the center of the center pole 500d from the inside. A direct injection passage 35 penetrating outward and a fog injection passage 36 penetrating from the inside to the nozzle member housing hole 500c around the center pole 500d are provided. The direct injection passage 35 passes liquid when direct injection is performed, and the mist injection passage 36 passes liquid when mist injection is performed.

  The nozzle member 400 is attached to the nozzle member accommodation hole 500c of the button member 500 by press-fitting. As shown in FIG. 3, the nozzle member 400 has a cap shape and includes a top portion 50 and a cylindrical portion 60. The top portion 50 has the above-described injection port 400a at the center. On the inner surface of the top 50, a circular central recess 400c centered on the injection port 400a and four concave groove-shaped screws 400b extending in the tangential direction are provided. On the other hand, the outer peripheral surface 61 is formed on the outer peripheral surface of the cylindrical portion 60, and four bulged portions 62 in the axial direction are provided on the inner peripheral surface. Thus, when the nozzle member 400 is press-fitted into the nozzle member accommodation hole 500c, the bulging portion 62 is applied to the outer periphery of the center pole 500d to secure a space serving as a liquid passage therebetween, and the button member 500 has an outer periphery. The protrusion 61 is bitten to prevent it from coming off.

  Then, the button member 500 having the nozzle member 400 is rotatably attached to the stem member 16 via the intermediate member 14, and the indicator line 500a shown in FIG. The direct injection for injecting the liquid straight from the injection port 400a of the nozzle member 400 and the mist injection position in accordance with the first mark 200a or the mist injection position in accordance with the second mark 200b It is possible to switch between spraying fog and spraying.

  When the button member 500 is mounted on the intermediate member 14, the second space 31 communicating with the mist injection passage 36 is defined between the intermediate member 14, and when the button member 500 is in the direct injection position, direct injection is performed. The passage 35 communicates with the first space 30 through the first communication hole 14a.

  By the way, the button member 500 is provided with a relief groove 500e, and the cap member 200 is formed with a rib 200d that enters the relief groove 500e when the button member 500 is in the mist injection position. When the stem member 16 is pushed in with the button member 500 set as the mist injection position, the rib 200d enters the escape groove 500e so that the button member 500 can be pushed in deeply. When pushing, the button member 500 is pressed against the rib 200d so that the button member 500 cannot be pushed deeply. Accordingly, the stroke when the stem member 16 is pushed in with the button member 500 as the direct injection position is restricted to be smaller than the stroke when the stem member 16 is pushed in with the button member 500 as the fog injection position.

  The button member 500 is covered with a transparent top cap 600 and attached to the cap member 200. The injection device 300 assembled as described above puts the tip of the pipe member 23 into the container 100 from the mouth part 100a, extends toward the bottom part in the container 100, and as shown in FIG. The cap member 200 is screwed to compress the packing 37 between the mouth portion 100 a and the flange portion 10 a of the cylinder member 10, and is attached to the mouth portion 100 a of the container 100.

  Now, when this sprayer is used in an upright state and the athlete's foot drug in the container 100 is sprayed directly from the spray port 400a and applied to the affected area in a concentrated manner, the top cap 600 is removed and the stem member 16 is mainly used. The button member 500 is rotated, the indicator line 500a of the button member 500 is aligned with the first mark 200a of the cap member 200 as shown in FIG. 1, and the button member 500 is set to the direct injection position as shown in FIG. The communication hole 14 a and the direct injection passage 35 coincide with each other, and the injection port 400 a communicates with the first space 30 through the direct injection passage 35.

  Of course, the indication line 500a is not limited to a vertical line, and may be an arrow or the like. The first mark 200a is not limited to the outer periphery of the upper edge of the cap member 200, and appropriate marks may be provided at other appropriate positions. Good. Moreover, you may make it confirm the rotation position of the button member 500 not only by a display but with a click feeling with a display.

  Thereafter, with the container 100 placed on the mounting table, the button member 500 is pushed against the spring 25 by placing a palm on the finger rest 500b or holding the container 100 with a hand and placing a finger on the finger rest 500b. Then, the stem member 16 is pushed down via the intermediate member 14, the elastic outlet valve 27 is pushed in to increase the pressure in the pressure chamber 28, and the piston member 12 is pushed into the cylinder member 10 in due course.

  Then, the space between the piston member 12 and the elastic outlet valve 27 is opened, and as the pressure in the pressure chamber 28 increases, the athlete's foot drug in the pressure chamber 28 is passed from between the piston member 12 and the elastic outlet valve 27 to the piston member 12 and the stem. The first space 30 is inserted into the first space 30 through the discharge passage 32 between the members 16 and is directly led to the direct injection passage 35 through the first communication hole 14a without increasing the pressure as shown in FIG. The athlete's foot drug is directly injected directly from the injection port 400a to the outside. At this time, the button member 500 is stopped against the rib 200d.

  Then, the piston member 12 is pushed out from the cylinder member 10 by the urging force of the spring 25 as the pressure in the pressure chamber 28 decreases, and the space between the elastic outlet valve 27 is eventually closed. Then, when the hand is released from the button member 500, the piston member 12 is restored by the urging force of the spring 25, the stem member 16 is pushed up via the elastic outlet valve 27, and the button member 500 is pushed up via the intermediate member 14.

  Then, as the piston member 12 is pushed up, the pressure chamber 28 becomes negative pressure, the elastic valve 26 is elastically deformed to open the inlet hole 12d as shown in FIG. 6, and the athlete's foot drug in the container 100 is positively passed through the pipe member 23. It sucks up from the vertical suction port 22a, enters the cylinder member 10 from the inlet 10b through the suction passage 24 through the horizontal hole 22b, and sucks into the pressure chamber 28 from the inlet hole 12d through the suction passage 12c.

  When the elastic outlet valve 27 returns to the position where it abuts against the seal member 29 and the pressure chamber 28 reaches almost atmospheric pressure, the state returns to the state shown in FIG. 4 and the elastic valve 26 returns to its original shape. Then, when the button member 500 is pushed in again, the athlete's foot drug in the container 100 is again directly sprayed directly from the spray port 400a.

  Further, when it is desired to directly inject from the injection port 400a using the injector in an inverted state, the injector is inverted as shown in FIG. Then, the athlete's foot drug in the container 100 moves to the mouth part 100a side by gravity, and the ball valve 21 falls to close the valve seat 20b so that it can be opened and closed. In this state, the button member 500 is pushed by placing a finger on the finger rest portion 500b, the stem member 16 is pushed through the intermediate member 14 against the spring 25, and the elastic outlet valve 27 is pushed up to increase the pressure in the pressure chamber 28. The piston member 12 is pushed into the cylinder member 10.

  Then, the space between the piston member 12 and the elastic outlet valve 27 is opened, and as the pressure in the pressure chamber 28 increases, the athlete's foot drug in the pressure chamber 28 is passed from between the piston member 12 and the elastic outlet valve 27 to the piston member 12 and the stem. The first space 30 is inserted into the first space 30 through the discharge passage 32 between the members 16 and is directly led to the direct injection passage 35 from the first communication hole 14a without increasing the pressure as shown in FIG. The athlete's foot drug is directly injected directly from the injection port 400a to the outside. Also at this time, the button member 500 is stopped against the rib 200d.

  Then, as the pressure in the pressure chamber 28 decreases, the piston member 12 is pushed out from the cylinder member 10 to eventually close the space between the elastic outlet valve 27. Then, when the hand is released from the button member 500, the piston member 12 is pushed out by the biasing force of the spring 25, the stem member 16 is lowered via the elastic outlet valve 27, and the button member 500 is pushed down via the intermediate member 14.

  Then, as the piston member 12 descends, the pressure chamber 28 is negatively pressurized, and the elastic valve 26 is elastically deformed to open the inlet hole 12d and the ball valve 21 is opened to remove the athlete's foot drug in the container 100 as shown in FIG. The air is sucked from the inverted suction port 20a, is introduced into the cylinder member 10 from the inlet 10b through the suction passage 24 through the lateral hole 22b, and is sucked into the pressure chamber 28 from the inlet hole 12d through the suction passage 12c.

  At this time, a large negative pressure is required to suck in the athlete's foot drug filled in the elongated pipe member 23 due to the negative pressure in the pressure chamber 28. Therefore, before the negative pressure is reached, as shown in FIG. The valve 21 is lifted from the valve seat 20b, and the athlete's foot drug in the container 100 enters the second cylindrical member 22 from the inverted suction port 20a.

  Next, when the athlete's foot drug in the container 100 is sprayed from the spray port 400a using the illustrated sprayer and is desired to be applied uniformly over a wide range of the affected area as a mist, the button member 500 is centered on the stem member 16. As shown in FIG. 10, the indication line 500a of the button member 500 is aligned with the second mark 200b of the cap member 200 as shown in FIG. The direct injection passage 35 is shifted, and the communication between the first space 30 and the direct injection passage 35 is blocked by the intermediate member 14.

  At this time, similarly to the first mark 200a, the second mark 200b of the cap member 200 is not limited to the outer periphery of the upper edge of the cap member 200, and appropriate marks may be provided at other appropriate positions. Moreover, you may enable it to recognize the fog injection position of the button member 500 not only by a display but by a click feeling with a display.

  Thereafter, the button member 500 is pushed in, the stem member 16 is pushed down through the intermediate member 14 against the spring 25, the elastic outlet valve 27 is pushed in, and the piston member 12 is pushed into the cylinder member 10. Then, as the elastic outlet valve 27 is pushed in, the pressure in the pressure chamber 28 is increased, and eventually the piston member 12 is pushed down by the pressure to create a gap with the engaging cylinder portion 14c of the intermediate member 14, thereby The insecticide is put into the first space 30 through the discharge passage 32 from between the piston member 12 and the elastic outlet valve 27 and into the second space 31 through the gap with the engaging cylinder portion 14 c of the intermediate member 14. Then, the athlete's foot drug is guided to the nozzle member housing hole 500c through the mist injection passage 36, and mist is injected from the injection port 400a to the outside as shown in FIG.

  At the time of this mist injection, the pressure is increased until the pressure in the pressure chamber 28 becomes equal to or higher than a certain level, and the athlete's foot drug is injected at a stretch with accumulated pressure. At this time, the rib 200d of the cap member 200 enters the escape groove 500e of the button member 500, and the button member 500 can be deeply pressed down. Therefore, it is possible to secure a sufficient injection pressure and obtain a complete mist state.

  Then, the piston member 12 is pushed out from the cylinder member 10 by the urging force of the spring 25 as the pressure in the pressure chamber 28 decreases, and the space between the elastic outlet valve 27 is eventually closed. Then, when the hand is released from the button member 500, the piston member 12 is returned by the urging force of the spring 25 and the stem member 16 is pushed up via the elastic outlet valve 27 and the intermediate member 14 is interposed, as in the case of direct injection. The button member 500 is pushed up.

  Then, as the piston member 12 is pushed up, the pressure chamber 28 becomes negative pressure, the elastic valve 26 is elastically deformed to open the inlet hole 12d as shown in FIG. 13, and the athlete's foot drug in the container 100 is positively passed through the pipe member 23. It sucks up from the vertical suction port 22a, enters the cylinder member 10 from the inlet 10b through the suction passage 24 through the horizontal hole 22b, and sucks into the pressure chamber 28 from the inlet hole 12d through the suction passage 12c.

  Then, when the elastic outlet valve 27 returns to the position where it abuts against the seal member 29 and the pressure chamber 28 becomes almost atmospheric pressure, the state returns to the state shown in FIG. 11, and the elastic valve 26 returns to its original shape. Then, when the button member 500 is pushed in again, the athlete's foot drug in the container 100 is again sprayed in a mist form from the injection port 400a.

  By the way, in the injector of the illustrated example, when pushing the stem member 16 with the button member 500 as the direct injection position, the stem member 16 is pressed against the rib 200d, and the stroke at that time is pushed with the button member 500 as the mist injection position. Regulate less than the stroke. In the case of direct injection in this way, the amount of rebound from the affected area is further reduced by reducing the injection pressure as much as the stroke is restricted, and the amount of discharge is reduced to prevent dripping from the affected area. Can do.

It is an external appearance perspective view in the state of direct injection use of a reciprocating pump type injector provided with an injection device concerning this invention. It is a longitudinal cross-sectional view of the injection apparatus with which the injector is equipped. It is a nozzle member with which the injection device is provided, (A) is a longitudinal section and (B) is the right side view. It is a longitudinal cross-sectional view of the direct injection use state in the upright of the injector. It is the longitudinal cross-sectional view of the direct injection state in the erect state. It is a longitudinal cross-sectional view of a state where the hand is released from the button member in the direct injection state. It is a longitudinal cross-sectional view of the direct injection use state in the inversion of the injector. It is a longitudinal cross-sectional view of the direct injection state in the inverted state. It is a longitudinal cross-sectional view of a state where the hand is released from the button member in the direct injection state. It is an external appearance perspective view in the state of fog spray use of the injector. It is a top view of the fog spray use state in the injector. It is a longitudinal cross-sectional view of the fog injection state. It is a longitudinal cross-sectional view of a state in which the hand is released from the button member in the fog spray state.

Explanation of symbols

100 Container 200 Cap member 200a First mark 200b indicating a direct injection position Second mark 200d indicating a liquid injection position Rib 300 Pump type injection device 400 Nozzle member 400a Injection port 500 Button member 500c Nozzle member storage hole 500d Center pole 500e Escape groove 10 Cylinder member 12 Piston member 14 Intermediate member 14a First communication hole 14b Second communication hole 14c Engagement cylinder portion 16 Stem member 28 Pressure chamber 30 First space 31 Second space 35 Direct injection passage 36 Fog injection passage

Claims (6)

In an injection device that can switch between direct injection that injects liquid linearly from an injection port and mist injection that injects into a mist,
An injection device, wherein the liquid is injected at a direct pressure when the direct injection is used, and the pressure is injected when the mist injection is used.   A button member having a nozzle member is rotated around a stem member to be a direct injection position or a mist injection position, and liquid is injected from an injection port of the nozzle member by switching between the direct injection and the mist injection. The injection device according to claim 1. A piston member that is inserted into a cylinder member and is reciprocally movable in the axial direction, forming a pressure chamber in the cylinder member, and penetrating through the center of the tubular stem member and projecting a tip from the stem member;
A first communication hole and a second communication hole; the second communication hole is closed by pressing the front end of the piston member over the front end of the stem member; A cap-shaped intermediate member that defines a first space that communicates with one communication hole;
A direct injection passage through which liquid passes when performing direct injection and a mist injection passage through which liquid passes through when performing mist injection, and when mounted around the stem member via the intermediate member, A second space communicating with the mist injection passage between the intermediate member and the button member communicating with the first space via the first communication hole when the direct injection position is established; ,
The injection device according to claim 1, further comprising: A nozzle member housing hole that opens to the peripheral surface of the button member and attaches the nozzle member, a center pole that protrudes outward from the center of the nozzle member housing hole, and a center pole that is centered from the inside. The direct injection passage penetrating in the direction; the fog injection passage penetrating from the inside to the nozzle member housing hole around the center pole;
The injection device according to claim 3, comprising:   The stroke when pushing the stem member with the button member as the direct injection position is restricted to be smaller than the stroke when pushing the stem member with the button member as the mist injection position. 4. The injection device according to 4.   An injector comprising the injection device according to any one of claims 1 to 5 attached to a container.

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