Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1001—Piston pumps
  • B05B11/1016—Piston pumps the outlet valve having a valve seat located downstream a movable valve element controlled by a pressure actuated controlling element
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/0064—Lift valves
  • B05B11/0067—Lift valves having a valve seat located downstream the valve element (take precedence)
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0027—Means for neutralising the actuation of the sprayer ; Means for preventing access to the sprayer actuation means
  • B05B11/0029—Valves not actuated by pressure
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0037—Containers
  • B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
  • B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/0064—Lift valves
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/0005—Components or details
  • B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
  • B05B11/0075—Two outlet valves being placed in a delivery conduit, one downstream the other
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1001—Piston pumps
  • B05B11/1009—Piston pumps actuated by a lever
  • B05B11/1011—Piston pumps actuated by a lever without substantial movement of the nozzle in the direction of the pressure stroke
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
  • B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
  • B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
  • B05B11/1042—Components or details
  • B05B11/1061—Pump priming means
  • B05B11/1063—Air exhausted from the pump chamber being discharged into the container during priming
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
  • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
  • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
  • B05B15/50—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
  • B05B15/58—Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter preventing deposits, drying-out or blockage by recirculating the fluid to be sprayed from upstream of the discharge opening back to the supplying means

Definitions

• the present invention relates to an improvement of a trigger type liquid ejector which is attached to an opening of a liquid container and used for discharging a content liquid.
• a conventional trigger-type liquid ejector that is attached to the opening of a liquid container and used to discharge the content liquid is disclosed in U.S. Pat. No. 4,918,835 shown in FIG. 33.
• the one proposed in the letter is known.
• the trigger type liquid discharger disclosed in the specification of U.S. Pat. No. 4,819,835 has a pump section E in parallel with a horizontally arranged discharge cylinder F. It is placed and laid.
• the trigger type liquid ejector shown in FIG. 33 is fixed to the opening of the liquid container at the container mounting portion 101, and when the trigger 102 is pressed in the direction of the arrow J ', the pressing piece 1 03 presses the horizontal recessed groove 105 of the head 104 of the rubber part G, so that the end face 106 of the rubber I touches the bottom wall 107 of the cylinder H
• the liquid filled in the cylinder chamber 108 is pushed out from the liquid suction / discharge port 109 to the liquid passage 110, and is discharged by the liquid pressure. Press body 1 1 1 I do.
• the discharge valve body 1 1 1 1 moves up due to the elastic deformation of the elastic deformation portion 1 1 2 and opens the discharge valve seat 1 1 3, so that the liquid flows from the discharge valve chamber 1 1 4 to the flow path 1 1 5 in the discharge cylinder F. From the flow path 1 16 through the shallow groove M between the liquid guide L and the short cylinder portion K of the nozzle head J, to the flow path 1 17 as a spin groove, and the discharge port Dispensed from 1 18
• the spring I 19 returns to the position shown in Fig. 33 due to the resilient elasticity of the spring 119. Then, the cylinder chamber 108 expands, and the chamber 108 becomes a negative pressure. Since this negative pressure acts on the discharge valve body 11 1 and the ball valve 120, Since the discharge valve body 1 1 1 1 is in close contact with the discharge valve seat 1 1 3 and closes the valve seat 1 1 3, and the ball valve 1 2 0 is separated from the suction valve seat 1 2 1, the liquid in the liquid container is The cylinder chamber 108 is filled from the suction pipe 122 through the liquid channel 110 and the boat 109 to prepare for the next discharge.
• An intake port 123 is opened on a part of the peripheral wall of the cylinder H, and the intake port 123 is formed by fixing the container mounting portion 101 to the ventilation passages 124, 125. To the inside of the liquid container.
• the biston I is on the stroke side, It has an annular scar 126 extending to the bottom wall 107 side of the cylinder H and a rose-shaped scar 127 extending to the open end side, that is, the opening side of the cylinder H.
• the shape scars 126 and 127 are close to the inner wall of the cylinder.
• the end face 106 of the piston I has a bottom wall 1 of the cylinder H.
• the edge green 1 28 of the annular scar 1 27 on the broach end side is closer to the bottom wall 107 than the cylinder H intake port 123.
• the intake boat 123 is communicated with the opening 125 of the cylinder H opened to the atmosphere, and air is introduced into the liquid container, and the air I
• the intake boat 123 is located between the annular skirts 126 and 127, and is closed. It is designed to prevent liquid leakage from the suction boat when the container falls over.
• the trigger-type liquid ejector having the structure described in the above-mentioned U.S. Pat. No. 4,819,835 discloses a method in which the user can surely transfer the piston I from the stroke end to the abro chain. The normal liquid ejection state is maintained as long as the trigger 102 is operated to move the liquid.
• reference numeral N denotes a cover piece of the discharge port 117 portion
• reference numeral 0 denotes a mounting axis of the cover piece N.
• the trigger type liquid ejector disclosed in U.S. Pat. No. 4,819,835 has good liquid ejection and good productivity, but it has a low discharge rate.
• Dang room 1 Looking at the behavior of the liquid pressure from 08 to the discharge port 1 18, the piston I moves from one ab mouth to the stroke as shown in Fig. 34.
• the fluid pressure PS in the shallow groove M and the flow path 117 which is the spin cleaner, does not rise so as to realize the complete ejection, and the piston Even if the discharge is stopped when the valve I reaches the stroke, even if the discharge is stopped from the cylinder chamber 108 to the port 109, the fluid path 110, the discharge valve chamber 114, etc.
• the residual pressure PE exists.
• the present invention provides a trigger type liquid discharger of the type shown in FIG. 33, in which no liquid dripping from the discharge port occurs at the beginning and end of operation of the trigger, and
• An object of the present invention is to provide a trigger-type liquid ejector that exhibits a complete liquid ejection function.
• a valve structure is provided on the upstream side of the discharge port of the trigger type liquid discharger, the valve structure being opened when the liquid reaches the normal discharge pressure, Discharge liquid from discharge port until liquid reaches normal discharge pressure Is not performed.
• the pump mechanism for pumping the liquid from the container into the liquid ejector is provided with a hydraulic pressure relief mechanism for returning the residual pressure in the liquid passage into the container, and the residual pressure at the end of the liquid discharge is provided.
• the structure prevents liquid dripping from the discharge port.
• a valve structure which is opened when the liquid reaches the normal discharge pressure is provided on the upstream side of the discharge port of the trigger type liquid discharger, and the pump The mechanism is provided with a hydraulic pressure relief mechanism that returns the residual pressure in the liquid passage to the inside of the container to prevent liquid dripping at the start and end of liquid discharge.
• the invention of claim 4 is configured to prevent unnecessary decompression of the inside of the container due to the return of the bomb mechanism.
• valve structure used in the invention of claim 1 has a structure that is easy to mold.
• the residual pressure from the liquid flow path to the bomb mechanism is removed by utilizing the outer peripheral surface of the inner cylinder portion which is a spring receiver provided in the cylinder of the bomb mechanism. I was afraid.
• the relief of the residual pressure of the bomb mechanism is performed by using the liquid flow path outside the bomb mechanism, so that the design of the structure for introducing the atmosphere into the container is free.
• the degree was high.
• the cylinder of the pump mechanism does not affect the removal of residual pressure from the bomb mechanism.
• FIG. 1 is an enlarged longitudinal sectional view showing a state before the start of ejection in a first embodiment of the liquid ejection mechanism according to the invention of claim 1.
• FIG. 2 is an enlarged longitudinal sectional view of the nozzle head shown in FIG.
• FIG. 3 is a front view of what is shown in FIG.
• FIG. 4 is an enlarged side view of an integrated structure including a valve body, a pressure receiving cylinder portion, a fixing portion, and a panel member of the one shown in FIG.
• FIG. 5 is a front view of what is shown in FIG.
• FIG. 6 is a rear view of what is shown in FIG.
• FIG. 7 is a side view in which the phase shown in FIG. 4 is different from that of FIG. 4 by an angle of 90 degrees, and a half portion is shown as a cross section.
• FIG. 8 is an enlarged longitudinal sectional view showing a state at the time of ejection of the one shown in FIG.
• FIG. 9 is an enlarged vertical cross-sectional view showing a state before the start of ejection in the second embodiment of the liquid ejection mechanism according to the invention of claim 1.
• FIG. 9 is an enlarged vertical cross-sectional view showing a state before the start of ejection in the second embodiment of the liquid ejection mechanism according to the invention of claim 1.
• FIG. 10 is an enlarged side view of the outer body of the liquid guide shown in FIG.
• FIG. 11 is a rear view of what is shown in FIG.
• FIG. 12 is a side view in which the phase shown in FIG. 10 is different from that of FIG. 10 by an angle of 90 degrees, and a half portion is shown as a cross section.
• FIG. 13 is an enlarged side view showing a half section of the inner body of the liquid guide shown in FIG. 9 as a cross section.
• FIG. 14 is a front view of what is shown in FIG.
• FIG. 15 is an enlarged longitudinal sectional view showing a state at the time of ejection of the one shown in FIG.
• FIG. 16 is an enlarged longitudinal sectional view of the first embodiment of the bobbin mechanism according to the invention of claim 2 and claim 4 in a stationary state.
• FIG. 17 is an enlarged longitudinal sectional view showing an intake stroke during operation of the one shown in FIG.
• FIG. 18 is an enlarged vertical sectional view showing a state in which the liquid discharge process has progressed from the state shown in FIG.
• FIG. 19 is an enlarged vertical cross-sectional view showing a state in which the liquid discharging process is completed and the process shifts to a residual pressure removing process.
• FIG. 20 is an enlarged longitudinal sectional view showing an intake stroke of a second embodiment of the pump mechanism to which the invention of claim 6 is applied.
• Fig. 21 shows the residual pressure removal process of the one shown in Fig. 20. It is an expanded longitudinal cross-sectional view shown.
• FIG. 22 is an enlarged longitudinal sectional view showing a discharge stroke of the third embodiment of the pump mechanism.
• FIG. 23 is an enlarged longitudinal sectional view showing a discharge stroke of the fourth embodiment of the pump mechanism.
• FIG. 24 is an enlarged longitudinal sectional view of the fifth embodiment of the pump mechanism to which the invention of claim 6 is applied, in which the button occupies one channel of the ab mouth.
• FIG. 25 is an enlarged longitudinal sectional view showing a residual pressure removing step of the one shown in FIG. 24.
• FIG. 26 is an enlarged vertical cross-sectional view of the embodiment of the invention according to claim 7 in which the occupying the end of the broachon.
• FIG. 27 is an enlarged longitudinal sectional view showing a residual pressure removing step of the one shown in FIG.
• FIG. 28 is an enlarged vertical cross-sectional view when the button of the embodiment of the invention of the claimed $ 5 ffl 8 occupies an airblow change.
• FIG. 29 is an enlarged longitudinal sectional view showing a residual pressure removing step of the one shown in FIG.
• FIG. 30 is an enlarged vertical sectional view of the embodiment of the invention of claim 5.
• FIG. 31 is an enlarged longitudinal sectional view of another embodiment of the invention of claim 4.
• FIG. 32 is an enlarged sectional view of a main part of an embodiment of the invention of the third aspect.
• FIG. 33 is an enlarged sectional view of an example of a conventional trigger type liquid ejector.
• FIG. 34 is a diagram showing a change in discharge pressure in the trigger type liquid discharger shown in FIG. 25.
• FIG. 1 to FIG. 8 show an enlarged view of the nozzle head part 1 of the first embodiment of the claimed invention.
• the nozzle head 2 has a valve seat 8 in a liquid flow path 7 upstream of the discharge port 5, and the liquid flow path 7 has a liquid flow path of the discharge cylinder F by a liquid flow path 9. It communicates with 1 1 5.
• the liquid guide 3 is formed integrally with the valve body 10, which closes the valve seat 8 to close the liquid flow path 7, and the valve body 10.
• the pressure receiving barrel portion 1 1, a sp e N'e les e n t 4 fixing unit 1 2 fixed to, to connecting the valve body 1 0 and pressure receiving tubular section 1 1 to the fixed part 1 2 Panel members 13 and.
• the pressure receiving cylinder portion 11 has a pressure receiving surface portion 14 that receives the liquid pressure toward the upstream side of the liquid flow path 7.
• an opening 16 for communicating with the liquid flow path 9 is formed in the cylinder 15 connecting the valve body 10 and the pressure receiving cylinder 11.
• the hydraulic pressure is reduced to the pressure receiving surface 1. 4 is configured to work.
• a guide tube 17 extending toward the liquid flow path 9 is formed in the body 15 at the upper portion 15, and the guide tube 17 is provided on the liquid flow path 7 side of the spin element 4.
• the valve body 10 is always inserted into the inner surface of the inner cylinder 18 so that it can slide with a slight sliding resistance, so that the valve body 10 always has the correct shape ⁇ and the front and rear sides of the valve seat 8.
• the fixed portion 12 and the non-member 13 are formed in an annular space between the guide tube 18 of the spin element 4 and the outer tube portion 4B. 4 C.
• the nozzle head 2 has a concave portion 19 on the front end surface for fitting and fixing the nozzle tip 6 therein. Then, the nozzle tip 6 is fitted and laid, leaving the flow path 20 as a spin groove.
• reference numeral 21 denotes a fitting hole for the axis 0 of the cover piece N shown in FIG.
• the nozzle head 2 has an annular groove 2A for fitting the rosette portion 4A at the tip of the spin element 4, and an annular groove for tightly and slidably fitting the pressure receiving tube portion 11 therewith. 2 B and are formed.
• the nozzle head 2 has a liquid guide 3 mounted therein, and an outer cylinder portion 2C is fitted to a spin element 4 previously fitted and fixed to a discharge cylinder F, and an undercut is provided. It is fixed by the structure 2D, so that the assembling workability can be improved.
• valve element 10 is driven by the hydraulic pressure acting on the horizontal projected area within the range indicated by the symbol X in FIG. 1 and the strong pressure of the panel member 13. It is in elastic contact with the valve seat 8.
• the pressure receiving cylinder portion 1 1 receives a single bow pressure toward the liquid flow path upstream side by the liquid pressure acting on the horizontal projection area of the pressure receiving surface portion 14.
• the liquid pressure acting on the horizontal projection surface ridge of the valve element 10 is: If the horizontal projection area of the pressure receiving surface part 14 is selected so that it becomes larger than the sum of the elastic pressures of the spring members 13, the moment when the hydraulic pressure becomes the normal discharge hydraulic pressure, Then, the valve body 10 is opened.
• FIG. 9 to FIG. 15 show the structure of claim 1 of the invention.
• the nozzle portion 201 of the second embodiment is shown in an enlarged manner, and the portion 201 is shown in an enlarged manner.
• the liquid guide 3 is a solid structure.
• the liquid guide 203 is constituted by two members, an outer shell 222 having a valve element 210 and an inner shell 222. Have.
• the structure of the nozzle head 202 including the nozzle tip 206 is the same as that of the first embodiment.
• the outer body 222 of the liquid guide 203 is formed by a valve body 210 and a pressure receiving cylinder part 211. It is composed of a fixed part 2 12 to the pin element 204, a spring member 2 13, and a guide cylinder 2 17.
• the valve element 210 blocks the liquid flow path 207 on the nozzle tip 206 side and the liquid flow path 209 on the upstream side.
• the panel member 2 13 connects the fixed portion 2 12 to the valve body 2 10, the pressure receiving tube portion 2 11, and the guide tube 2 17.
• An inner shell 22 3 shown in FIGS. 13 and 14 is fitted and fixed in the guide cylinder 2 17.
• the inner body 2 2 3 has a head 2 2 4, a flange 2 2 5 A moving cylinder 2 2 6 is provided.
• the head 224 is pressed into a cylindrical portion 215 extending from the valve body 210 of the outer body 222 to the upstream side of the liquid flow path.
• the flange portion 225 is press-fitted into the guide cylinder 217.
• the sliding cylinder 226 is inserted into the inner cylinder 218 of the spin element 204 so as to be able to slide in the axial direction with a small sliding resistance.
• the head part 222 has a through hole 227 at the center thereof, and a concave groove 229 in the radial direction at the head end 228.
• the cylindrical portion 2 15 of the outer shell 2 2 2 has the same phase as the concave groove 2 2 9 formed in the radial direction of the head 2 2 4 of the inner shell 2 2 3. There is a window 230 facing toward it.
• the guide cylinder 231 which extends from the valve seat 208 of the nozzle head 202 to the upstream side of the liquid flow path, also has the same phase as the window hole 230 in the radial direction.
• a window hole 2 3 2 is opened.
• the liquid flow path 233 of the discharge tube F is connected to the liquid flow path 209 from the port 234 of the spin element 204 and the sliding of the inner body 223.
• the pressure receiving cylinder part 2 of the outer shell 2 2 2 1 1 Pressure receiving surface 2 1 4 It communicates with the annular groove 2 2 2 B on the front side.
• valve element 210 is provided with the elastic pressure of the panel member 21 3 and the hydraulic pressure acting on the horizontal projection cross section of the inner body 2 23 facing the liquid flow path 209. Therefore, the fluid pressure in the fluid flow path 209 acts on the pressure receiving surface 2 14 of the pressure receiving cylinder 2 11 of the outer body 2 2. Then, the outer body 222 is pressed toward the upstream side of the liquid flow path.
• valve element 210 comes into close contact with the valve seat, the discharge stops, and no dripping or the like occurs as in the first embodiment.
• the liquid guide 203 is fitted inside the outer body 222 having the valve body 210, and the inner body 230 is slid. Since the opening of the moving cylinder 2 26 faces the liquid flow path 2 09, the sliding cylinder 2 26
• the horizontal projection cross section that is, the horizontal projection cross section ridge of the sliding cylinder 2 26 within the range indicated by the arrow S in FIGS. 9 and 15 is referred to as the horizontal projection cross section ridge of the corresponding portion of the first embodiment. Therefore, the horizontal projection cross-section branch of the sliding cylinder 2 26 and the horizontal projection cross-section branch of the pressure receiving surface 2 14 of the pressure receiving cylinder section 2 11 can be compared with each other. It can be great.
• the initial priming at the beginning of use that is, the operation of discharging the air in the liquid cylinder and sucking up the liquid by reciprocating the liquid liquid in the initial period can be completed in a short time.
• valve element 210 since the valve element 210 is opened only by air pressure during the initial blinding, the discharge valve element 111 shown in FIG. 33 is omitted in the second embodiment. It will also be possible.
• FIG. 16 shows a first embodiment of the bomb section according to the claimed invention of $ gI2 as an enlarged vertical section. 2 is composed of a cylinder 23 and a stone 2.
• the cylinder 23 has an outer cylinder part 25 cooperating with the piston 24 and an inner cylinder part 27 in which a spring 26 for returning the piston 24 is housed. It is configured.
• a cylinder chamber 28 is provided between the outer cylinder part 25 and the inner cylinder part 27, and the cylinder chamber 28 is provided with a liquid suction and discharge port 3 formed on the bottom wall 29. At 0, it communicates with a fluid path 110 having a ball valve 120 as a check valve.
• a plurality of short shallow grooves 32 running in the generatrix direction are formed in a portion of the inner peripheral wall 31 in contact with the bottom wall 29 of the outer cylindrical portion 25.
• the short shallow groove 32 in the illustrated example is recessed in the inner peripheral wall 31, but two low protrusions running in the generatrix direction are provided adjacent to the inner peripheral wall 31, and the short shallow groove is provided between the protrusions. It may be.
• an intake port 123 for introducing outside air into the container in which the trigger type liquid ejector is mounted is opened.
• a plurality of outside air introduction shallow grooves 33 running in a plurality of generatrix directions are recessed.
• the short shallow groove 32 in the illustrated example is formed short in the generatrix direction and relatively long in the circumferential direction.
• the piston 24 has a thicker end on the stroke end side, that is, the end on the bottom wall 29 side of the cylinder 23, and extends toward the stroke end on both inner and outer peripheral ends thereof.
• Annular scarts 35, 36 are formed so as to be in close contact with the inner peripheral wall 31 of the outer wall 25 and the outer peripheral wall 34 of the inner wall 27.
• a rose-shaped scar 37 is formed on the peripheral end green of the thickened portion on the side of the open end, which extends toward the open end and is in close contact with the inner peripheral wall 31 of the outer cylindrical portion 25.
• the interval between the annular scar 35 and the annular scar 37 is such that the annular scar 35 rides on the short shallow groove 32 and the annular scar 37 Of the suction boat 12 3, the opening 1 2 9 of the outer cylinder 25 At the end 38, the interval is selected so that it can be in close contact with the inner peripheral wall 31.
• FIG. 20 and FIG. 21 show a second embodiment of the invention of claim 2, and the following first embodiment shown in FIG. 16 to FIG. Although different in various structures, the other structure of the trigger type liquid ejector is the same as that of the first embodiment.
• the outer cylindrical portion 25 of the cylinder 23 is formed to have an inner diameter
• the outer cylindrical portion of the cylinder A large-diameter outer cylinder section 39 and a small-diameter outer cylinder section 40 are provided.
• a suction port 42 into the container is provided on the connecting wall 41 of the and.
• the piston 24 has a single structure
• the air piston 43 sliding in the large-diameter outer cylindrical portion 39 and the air piston 43 have the same structure. It has a two-part structure consisting of a liquid piston 44 fitted inside the piston 43 and sliding inside the small-diameter outer cylinder portion 40, and an air piston 43 and a liquid piston 44. And are joined together at a fitting portion 45 at the top of each other.
• a groove 43A is formed in the inner peripheral surface of the air piston 43 in the fitting portion 45.
• the grooves 43 A are formed and formed at four positions which differ in phase by an angle of 90 degrees on the inner peripheral surface of the air piston 43.
• the top 44 A of the liquid piston 44 has a small hole 44 B Is pierced.
• the ⁇ 43 A and the small hole 44 B are communicated with each other, and by this communication, the inner space 44 C of the liquid piston 44 and the inner space 27 of the inner cylinder portion 27 of the cylinder are formed.
• a shallow groove for introducing outside air 46 is formed in the inner peripheral surface of the large-diameter outer cylindrical portion 39, and an outer peripheral surface 27B adjacent to the bottom wall 27D of the cylinder is provided with a residual pressure removing groove.
• a short shallow kiln 48 is provided.
• the distance between the annular skirt 49 of the air piston 43 and the annular skirt 50 of the liquid piston 44, and the outside air conduction U 46, short shallow ⁇ 48, annular skirt 49 50 are the same as those in the first embodiment.
• FIG. 22 shows a third embodiment of the invention of claim 2.
• the liquid piston 44 and the liquid piston 44 are integrally connected at a fitting portion 45 at the top.
• the pressing piece 1 of the trigger 102 is attached to the top of the liquid piston 51.
• a lateral groove 1 0 5 is formed under the action of 0 3
• the mounting cylinder 53 of the air piston 52 is externally fitted and fixed to the cylinder wall 54 of the liquid piston 51 with an undercut structure 55.
• the cylinder has a large-diameter outer cylinder portion 39 and a small-diameter outer cylinder portion 40, and an intake port 4 formed in a connection wall portion 41 between the two. It consists of 2 and.
• a shallow groove for introducing outside air 46 is formed on the inner peripheral surface of the large-diameter outer cylindrical portion 39.
• the third embodiment differs from the second embodiment in that a short shallow hole 48 A for removing residual pressure is provided on the inner peripheral surface 47 of the small-diameter outer cylindrical portion 40. .
• FIG. 23 shows a fourth embodiment of the invention of claim 2 in which the liquid part 57 having the toner part 56 located inside and the liquid part 57 integrally formed therewith are shown.
• An air piston 58 located on the outside has an annular scar 59.60, 61 facing the stroke end in the same direction, and the air piston 58 is a cylinder 6
• the liquid piston 57 is in close contact with the inner wall surface 66 of the small-diameter inner cylinder portion 65 of the cylinder 62.
• a shallow groove for introducing outside air is not formed on the inner wall surface 64 of the large-diameter outer cylindrical portion 63, and the suction boat 123 into the container is replaced by the current scar 5 9 is passed so that outside air is directly introduced into the container.
• a hanging short pipe portion 68 is suspended from the large-diameter outer cylindrical portion 63 at a position closer to the cylinder bottom wall 67 than the intake boat 123.
• the short-tube portion 68 receives residual pressure liquid discharged from the short shallow groove 69 for removing residual pressure formed on the inner wall surface 66 of the small-diameter inner cylinder portion 65. This is for flowing down vertically through the gap between the peripheral surface, the outer peripheral surface of the liquid piston 57, and the inner peripheral surface of the air piston 58, in the direction of the container.
• FIGS. 24 and 25 show an example in which the invention of claim 6 is applied to the fifth embodiment of the invention of claim 2.
• the inner peripheral wall of the cylinder 72 is divided into a large-diameter portion 73 on the opening end side and a small-diameter portion 75 on the bottom wall 74 side, and the cylinder 76 has a cylinder on the stroke end side.
• the rose-shaped scar ⁇ 8 is formed on the blow-open side and elastically contacts the large-diameter portion 73 of the cylinder 72.
• a short entrance 79 is provided around the portion where the small diameter portion 75 of the cylinder 72 contacts the bottom wall 74, and the total length of the small diameter portion 75 is, as shown in FIG.
• the edge of the annular scar 77 enters the short shallow groove 79 the edge of the other annular scar 78 becomes the large diameter portion 73 when the edge of the annular scar 77 enters the short shallow groove 79.
• the length occupying the position of the boundary 80 with the small diameter portion 75 is selected.
• a liquid flow path 81 communicating with the inside of the container is opened at a small diameter portion 75 adjacent to the boundary 80, and an intake port 82 is provided at a large diameter portion 73 adjacent to the boundary 80. It is open.
• FIG. 24 In FIG. 25, reference numeral 83 denotes a boat for sucking and discharging liquid.
• the inner peripheral wall of the large diameter portion 73 of the cylinder 72 has an annular scan when the piston 76 occupies the air blow chain.
• a small number of low ridges 84 running in the generatrix direction are protruded from the position occupied by the bottom wall 7 4 slightly below the position occupied by the power.
• the annular scar 78 is located at the boundary 80, and the intake boat 82 is opened, so that the air flows into the container and the container is prevented from being negatively pressurized.
• the short shallow groove 79 is replaced with a low ridge running in the generatrix direction
• the low ridge 8 is replaced with a short shallow groove running in the generatrix direction.
• the low ridges 84 are replaced with the outside air introduction shallow grooves 33 shown in Fig. 16 or the expanding boundary 503 shown in Fig. 31. It is.
• FIG. 26 and FIG. 27 show an embodiment of the invention of claim 7, wherein the cylinder 91 of the bomb section 90 has an inner cylinder section 92,
• the piston 93 has annular scars 94, 95 elastically contacting the inner peripheral wall of the cylinder 91, and an annular scart 96 elastically contacting the outer peripheral wall of the inner cylindrical portion 92,
• a hole 98 is formed in the bottom wall 97 of the inner cylindrical portion 92, and the bottom of the hole is formed in the bottom wall 97 and communicates with the upper end of the liquid flow path 99 communicating with the container. .
• a short shallow cleaner 301 is provided around the outer peripheral surface, and the piston 93 is formed as shown in FIG.
• the edge green of the ma-like scar 96 enters the short shallow ⁇ 301, and the edge and the short shallow 3 ⁇ 4 310 1 'It is configured so that a gap is formed between it and the bottom.
• the intake boat 30 When the piston 93 occupies the stroke end position, the intake boat 30 is located on the cylinder wall closer to the cylinder opening than the position of the annular scart 95. 2 has been established and is configured so that air can be introduced into the container.
• the removal of the residual pressure around the bomb part 90 is performed by the short shallow groove 301 of the inner cylinder part 92 of the cylinder 91 and the holes 98 of the bottom walls 97 and 100. Since this is performed with the liquid flow path 99, the degree of freedom in designing the outside air introduction structure for preventing negative pressure inside the container from a structure other than the illustrated suction boat 302 is increased.
• the short shallow groove 301 is replaced with a low ridge in the generatrix direction.
• FIG. 28 and FIG. 29 show an example of the embodiment of the invention of claim 8 in which the cylinder 3 10 of the pump section 3 09 is provided with the bottom wall 3. 11 has a receiving cylinder 3 1 4 of the piston 3 2 2 for return movement 3 1 3 at the concentric position and an outer surface of the bottom wall 3 1 1, that is, a check valve 3 15
• a liquid flow path 3 19 communicating with the inside of the container is formed at a portion facing the liquid guide pipe 3 17 provided with the flow path 3 16, and the axis of the bottom wall 3 20 of the receiving cylinder 3 14 is formed.
• a hole 3 2 1 communicating with the liquid flow path 3 1 9 is formed in the core and pierced.
• an annular concave groove 3 22 is formed on the outer peripheral wall facing the hole 3 21, and an annular elastic valve 3 2 3 is formed in the annular concave groove 3 22.
• the elastic valve 3 2 3 is connected to the upper end green through the liquid guide tube 3 17 and the outer surface of the bottom wall 3 1 1 and the holding cylinder 3 1 8 And the hanging portion 3 25 of the elastic valve 3 2 3 closes the hole 3 2 1 from the outer surface.
• the piston 312 has annular scars 326 and 327 which resiliently contact the inner peripheral surface of the cylinder 310 and has a piston head located on the ab-end side.
• a bin body 330 extending from the inner surface of 328 to the stroke end through the internal space 329 is provided at the axial center position, and the axial center of the bin body 330 is provided.
• the residual pressure at 33, 2 and port 3 3 3 etc. is released into the container, preventing dripping caused by the residual pressure.
• FIG. 30 shows an enlarged longitudinal section of the nozzle head portion 401 of the embodiment of the invention of claim 5, and the nozzle head portion 401 has a nozzle head portion 402. And liquid guides 4 0 3 and It comprises a spin element 404 and a nozzle tip 406 having a discharge port 405.
• the nozzle head 402 has a valve seat 408 in the upstream liquid flow path 407 as in the first and second embodiments, and the liquid flow path 407 is The liquid flow path 409 communicates with the liquid flow path 1 15 of the discharge cylinder F and relays.
• the liquid guide 400 is composed of a valve element 410 that closes the valve seat 408 and closes the liquid flow path 407, similarly to the liquid guide of the first and second embodiments. 10 and an integral pressure receiving cylinder 4 11 1, and the pressure receiving cylinder 4 1 1 1 has a pressure receiving surface 4 1 4 for receiving the liquid pressure toward the upstream side of the liquid flow path 4 07. .
• the liquid guide 403 is slidably fitted into the guide cylinder 418 of the spin element 404 with a guide cylinder 417, and is projected into the guide cylinder 418.
• the coil spring 413 is contracted between the panel seat 412 and the back of the valve body 410, and the valve body 410 is constantly pressed against the valve seat 408.
• reference numeral 419 denotes a panel supporting ridge extending in the guide tube 417 of the liquid guide 403 in the generatrix direction.
• the liquid pumped into the liquid flow path 1 15 by the operation of the trigger flows from the liquid flow path 4 09 into the guide cylinder 4 17 of the liquid guide 4 0 3, and between the support ridges 4 9.
• the fluid pressure is applied to the pressure receiving surface 4 14 of the pressure receiving cylinder 4 1 1 through the fenestration 4 2 0.
• the pressing force of the liquid pressure acting on the pressure receiving surface 4 14 is reduced by the force of the panel 4 13.
• the valve element 410 is opened when the pressure becomes greater than the sum of the pressure and the pressing force of the hydraulic pressure acting on the back of the valve element 410.
• the coil springs 4 13 are provided separately, the formation of the liquid guides 4 3 becomes extremely easy.
• FIG. 31 shows an embodiment of the invention of claim 4.
• the inner peripheral surface of the outer cylindrical portion 25 of the cylinder 23 is Although a plurality of outside air introduction shallow grooves 33 running in the direction of a plurality of buses are recessed, in the embodiment shown in FIG. 31, the annular scar of The inner peripheral surface 502 near the opening 1 29 of the cylinder 23 is slightly smaller than the inner peripheral surface 501 of the part of the hydraulic discharge stroke range of
• the enlarged boundary 503 has a wavy shape as shown by the dotted line in FIG. 31 and the annular scar 37 has a frontage from the time when it rides on the wavy enlarged boundary 503 Outside air is introduced into the intake boats 1 2 3 from the section 1 2 9.
• liquid delivery cylinder having the check valve 504 is used.
• the second embodiment and the third embodiment differ from each other in that the biston is divided into the air biston and the liquid biston. Further, in the third embodiment, the annular skirts of the stones are oriented in the same direction. As a result, demolding during piston molding with a synthetic resin is easier than in the first embodiment, and productivity is improved.
• FIG. 32 is an enlarged cross-sectional view showing only a main part of an example of the embodiment of the invention of claim 3 as a nozzle head part of the first trigger type liquid discharger.
• Nozzle head 2, liquid guide 3, spin element 4, and nozzle tip 6 according to the invention of claim 1 shown in Fig. 1 or Fig. 8 are applied to 0.
• the cylinder mechanism 71 includes cylinder cylinders 39, 40. 41, 42 according to the invention of claim 2 shown in FIGS. 20 and 21;
• the piston member 4 3, 4 4 .4 6, 4 8, 49.5 .5 is applied, and dripping from the discharge port 5 or discharge of incomplete foam particles is completely prevented. Is done.

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• Closures For Containers (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Details Of Reciprocating Pumps (AREA)

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• 1995
  • 1995-10-26 DE DE69535779T patent/DE69535779D1/de not_active Expired - Lifetime
  • 1995-10-26 WO PCT/JP1995/002203 patent/WO1996013334A1/ja active IP Right Grant
  • 1995-10-26 CA CA002179888A patent/CA2179888C/en not_active Expired - Lifetime
  • 1995-10-26 CN CN95191078A patent/CN1071599C/zh not_active Expired - Lifetime
  • 1995-10-26 EP EP07024747A patent/EP1923143B1/en not_active Expired - Lifetime
  • 1995-10-26 EP EP03000944A patent/EP1310305B1/en not_active Expired - Lifetime
  • 1995-10-26 KR KR1019960703393A patent/KR100407125B1/ko not_active IP Right Cessation
  • 1995-10-26 DE DE69535748T patent/DE69535748D1/de not_active Expired - Lifetime
  • 1995-10-26 JP JP51444596A patent/JP3720054B2/ja not_active Expired - Fee Related
  • 1995-10-26 EP EP95935573A patent/EP0738542B1/en not_active Expired - Lifetime
  • 1995-10-26 AU AU37540/95A patent/AU708396B2/en not_active Expired

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