JP5946134B2 - Trigger type liquid ejector - Google Patents

Description

  The present invention relates to a trigger type liquid ejector.

  A trigger-type liquid ejection is known in which a liquid in a mounted container is pumped by the action of a built-in pump mechanism by a trigger operation, and ejected in a liquid, mist, or the like from a nozzle at the tip. (For example, refer to Patent Document 1).

  The trigger type liquid ejector includes a longitudinal channel communicating with a mounted container body through a pipe, and an injection communicating with the inside of a nozzle fitted to the tip, communicating with an upper portion of the longitudinal channel and extending forward. A main body having a flow path and a cylinder cylinder projecting forward in communication with the inside of the vertical flow path below the injection flow path, and injecting a trigger for operating a plunger sliding in the cylinder cylinder It is suspended from the main body at the position in front of the flow path so as to be swingable.

  Then, the cylinder cylinder is pressurized by a trigger operation so that the cylinder cylinder liquid is ejected from the nozzle outlet through the longitudinal channel and the injection channel.

Japanese Patent No. 3789904

  The present invention proposes a trigger type liquid ejector that can continuously eject liquid by a normal trigger operation in the form of the above-described conventional trigger type liquid ejector. In addition, the present invention proposes a trigger type liquid ejector that is simple in structure, can be formed with less change in size than conventional products, and is easy to handle.

  The first means is configured as follows. That is, the longitudinal flow path Pa communicating with the inside of the container body 80 through the pipe 52, the cylinder cylinder 20 projecting forward in communication with the longitudinal flow path Pa, and the longitudinal flow path Pa at a position above the cylinder cylinder 20 A main body B having an injection flow path Pb that communicates with the injection passage Pb and is forwardly mounted. A nozzle E is attached to the tip of the injection cylinder 13 that defines the injection flow path Pb, and can swing from the front of the injection cylinder 13 A trigger type liquid ejector that sucks the liquid in the container body 80 into the cylinder cylinder 20 by the operation of the trigger G suspended from the nozzle E and ejects the liquid from the outlet of the nozzle E, and includes an inner cylinder 50 and an outer cylinder 51. The inner cylinder 50 is defined as a communication path 53 that communicates the longitudinal flow path Pa and the pipe 52, and the annular space 54 between the inner cylinder 50 and the outer cylinder 51 and the upper part in the longitudinal flow path Pa are connected via the communication path 33. The auxiliary cylinder C communicated with the inner cylinder 50, the inner peripheral edge of the inner cylinder 50, and the outer cylinder 51. A pressurizing liquid that is fitted in an upwardly biased state with an annular piston 55 that vertically divides the annular space 54 by fitting the peripheral portions so as to be liquid-tightly slidable. A part of the pressure is introduced into the auxiliary cylinder C by pressing the annular piston 55, and the liquid in the auxiliary cylinder C can be ejected from the outlet of the nozzle E by the upward biasing force of the annular piston 55 after the trigger G is operated. .

  The second means is configured as follows. That is, in the first means, the pressure release groove 58 at the end of the ejection is provided vertically at the inner peripheral upper end portion of the outer cylinder 51 of the auxiliary cylinder C.

  The third means was configured as follows. That is, in the first means or the second means, the bottom of the annular space 54 of the auxiliary cylinder C is closed, and the pressure release hole 59 is formed in the outer cylinder 51.

  The present invention includes an inner cylinder 50 and an outer cylinder 51, defines the inside of the inner cylinder 50 as a communication path 53 that communicates the longitudinal flow path Pa and the pipe 52, and an annular space 54 between the inner cylinder 50 and the outer cylinder 51. Since the auxiliary cylinder C that communicates with the upper part of the vertical flow path Pa via the communication path 33 is provided, the liquid can be continuously ejected by a normal trigger operation. Further, the structure is simple, the size can be changed less than the conventional product, and the handling operation is simple.

  When the pressure release groove 58 at the end of the ejection is provided vertically at the inner peripheral upper end of the outer cylinder 51 of the auxiliary cylinder C, there is a feature that the liquid breakage at the end of the ejection from the auxiliary cylinder C is improved.

  When the bottom of the annular space 54 of the auxiliary cylinder C is closed and the pressure release hole 59 is formed in the outer cylinder 51, the infiltration of the liquid in the container body 80 into the annular space 54 can be prevented, and the pressure Due to the presence of the release hole 59, the operation of the annular piston 55 can be performed smoothly.

It is a longitudinal cross-sectional view of a trigger type liquid ejector. (First embodiment)

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a first embodiment of the trigger type liquid ejector according to the present invention. In FIG. For convenience of explanation, the left side of FIG. 1 will be described as a front part, the right side as a rear part, the front side as a right part, and the back side as a left part.

  The trigger type liquid ejector 1 includes a mounting cap A, a main body B, an auxiliary cylinder C, a connecting member D, a nozzle E, a plunger F, a trigger G, and a main body cover H.

  The mounting cap A is screwed to the outer periphery of the mouth / neck part 81 of the container body 80 to mount and fix the trigger type liquid ejector 1 to the container body 80, and is connected to the lower portion of the main body B so as to be rotatable. .

  In the first embodiment, the main body B further comprises a main body portion B1, a cylinder member B2, and an intake B3.

  The main body portion B1 includes a connecting cylinder portion 10 having a lower end opening whose upper end is closed, and a vertical cylinder 12 having a base end opened at the center of the top plate 11 of the connecting cylinder portion 10 is raised upward. An injection cylinder 13 having a base end opened at the upper end of the cylinder 12 extends forward. Further, a cylinder fitting cylinder 14 is provided so as to protrude from the front face of the vertical cylinder 12 on the connecting cylinder portion 10 and open at the front face and close the rear end.

  The cylinder member B2 has a flange-like back wall extending from the rear end edge of the outer cylinder cylinder 20 fitted in the cylinder fitting cylinder 14, and is forwardly closed from the inner periphery of the back wall. A protruding portion 21 is provided. Further, an annular gap 22 is provided between the cylinder fitting cylinder 14 and the cylinder cylinder 20, and a first vent hole 23 formed in the upper part of the cylinder cylinder 20 through the annular gap 22 and the cylinder A second ventilation hole 24 drilled in the lower portion of the fitting cylinder 14 is communicated.

  The intake B3 has a lower end at the center of the top plate 31 of the large-diameter cylindrical portion 30 and the large-diameter cylindrical portion 30 with a gap between the top of the connecting cylindrical portion 10 and the top plate 11 of the connecting cylindrical portion 10. And a small diameter cylindrical portion 32 fitted in the vertical cylinder 12, and a vertical flow path Pa is defined inside the small diameter cylindrical portion 32. Further, a communication passage 33 for communicating with the inside of the auxiliary cylinder C is provided between the small diameter cylinder portion 32 and the vertical cylinder 12. Further, a flange-like top wall at the upper end of the mounting cap A is brought into contact with the upper surface of the flange 34 projecting from the outer periphery of the large-diameter cylindrical portion 30, and the mounting cap A is rotatably mounted on the main body B1.

  A small-diameter seal cylinder 35 and a large-diameter seal cylinder 36 are erected on the top surface of the top plate 31 of the large-diameter cylinder 30, and the small-diameter seal cylinder 35 is suspended from the top plate 11 of the connecting cylinder 10. On the inner periphery, the large-diameter seal cylinder part 36 is fitted to the upper end part of the inner periphery of the connecting cylinder part 10 to divide the space between the large-diameter cylinder part top plate 31 and the connecting cylinder part top plate 11 in and out. . The top plate 31 of the large-diameter cylindrical portion 30 is provided with a third ventilation hole 37, and when the plunger F is pushed in, the outside and the inside of the container body 80 are connected to the first ventilation hole 23, the gap 22, and the second passage. The outside air is introduced into the container body 80 which is communicated via the air holes 24 and the third air holes 37 and is made negative pressure through a gap in the connecting piece 60 portion of the auxiliary cylinder C which will be described later. In addition, a through-hole 38 that communicates the inside of the communication passage 33 and the inside of the auxiliary cylinder C is formed in the large-diameter cylindrical portion top plate 31 inside the small-diameter seal cylindrical portion 35.

  In addition, a first communication path 39 that communicates the inside of the cylinder cylinder 20 and the longitudinal flow path Pa is provided at a position above the cylindrical projection 21 in the cylinder cylinder 20, and the vertical flow path Pa below the first communication path 39. A discharge valve V <b> 1 is provided inside, and a suction valve V <b> 2 is provided above the first communication passage 39. Further, a second communication passage 40 is provided that communicates the inside of the vertical flow path Pa above the suction valve V2 and the injection flow path Pb defined by the injection cylinder 13. Furthermore, a third communication path 41 that communicates the inside of the longitudinal flow path Pa above the suction valve V2 and the communication path 33 is provided.

  The auxiliary cylinder C includes an inner cylinder 50 and an outer cylinder 51, and the inner cylinder 50 is defined as a communication path 53 that connects the longitudinal flow path Pa and the suction pipe 52, and between the inner cylinder 50 and the outer cylinder 51. The annular space 54 and the upper part in the longitudinal flow path Pa are communicated with each other via the communication path 33. Further, the inner peripheral edge portion is fitted to the inner cylinder 50 and the outer peripheral edge portion is fitted to the outer cylinder 51 so as to be liquid-tightly slidable, and an annular piston 55 that divides the upper and lower sides of the annular space 54 is mounted in an upward biased state. Yes.

  In the first embodiment, the auxiliary cylinder C is composed of two members, a first member C1 and a second member C2. The first member C1 has a flange-like top wall 56 inward from the upper end of the outer cylinder 51. The fitting cylinder 57 is suspended from the center of the top wall 56. In addition, a pressure release groove 58 is provided vertically at the inner peripheral upper end of the outer cylinder 51, and a pressure release hole 59 is provided below the outer cylinder 51. Further, a support plate 61 having an L-shaped cross section projects from the upper outer periphery of the outer cylinder 51 via a plurality of connecting pieces 60 in the circumferential direction. The second member C2 has a fitting cylinder 62 that is fitted to the lower end of the inner periphery of the outer cylinder 51 standing up from the upper surface of the bottom wall 63, has a lower end opened at the center of the bottom wall 63, and defines a communication path 53 inside. The inner cylinder 50 is erected. Then, the upper end of the inner cylinder 50 is fitted to the lower end of the small-diameter cylinder portion 32 of the intake B3, the support plate 61 is fitted to the lower end of the intake B3, and the fitting cylinder 57 is fitted to the large-diameter cylinder of the intake B3. The main body 31 is attached to the main body B by being fitted to the outer periphery of the fitting cylinder portion 42 that is suspended from the rear surface of the top plate 31.

  The annular piston 55 has a configuration in which an outer sliding portion 55a having an upper and lower skirt shape on the outer periphery and an inner sliding portion 55b having an upward skirt shape on the inner periphery are connected by a connecting plate 55c. The cylinder 51 is fitted to the inner circumference of the cylinder 51 so as to be liquid-tightly slidable, and the inner sliding portion 55b is fitted to the outer circumference of the inner cylinder 50 so as to be liquid-tightly slidable, and is interposed between the bottom wall 63 and the connecting plate 55c. The coil spring s is always biased upward.

  Then, a part of the pressurized liquid ejected from the nozzle E through the trigger G operation is introduced into the auxiliary cylinder C by pressing the annular piston 55, and is assisted by the upward biasing force of the annular piston 55 after the trigger G operation. The liquid in the cylinder C can be ejected from the ejection port of the nozzle E.

  As described above, the main body B includes the longitudinal flow path Pa communicating with the inside of the mounted container body 80 via the pipe 52 and the communication path 53, the cylinder cylinder 20 projecting forward and communicating with the vertical flow path Pa. An injection flow path Pb that communicates with the longitudinal flow path Pa and extends forward at a position above the cylinder cylinder 20 and a communication passage 33 that communicates between the auxiliary cylinder C and the longitudinal flow path Pa are provided.

  The connecting member D is fitted to the tip of the injection cylinder 13 by fitting the mounting cylinder 65 to the outer periphery of the tip of the injection cylinder 13 that defines the injection flow path Pb, and the injection cylinder 13 via the connection member D. A nozzle E is connected to the tip of the nozzle. A substrate 66 that covers the distal end surface of the injection cylinder 13 is provided at the distal end of the mounting cylinder portion 65, and the inside of the injection flow path pb communicates with the jet outlet at the distal end of the nozzle E through a through hole 67 provided in the substrate 66. Further, spring plates 68 are integrally suspended from both sides of the front portion of the mounting cylinder portion 65.

  The nozzle E is connected to the connecting member D so as to be rotatable, and the inside of the connecting member D is configured to be a liquid jet stop, a mist-like jet, and a liquid jet depending on the rotational position of the nozzle E. A known switching mechanism that can be selected is provided.

  The plunger F protrudes from the rear end portion of the peripheral wall portion 71 that can move back and forth between the cylinder tube 20 and the cylindrical protrusion 21 between the cylinder portion 20 and the cylindrical protrusion 21. The peripheral wall 71 is configured such that the tip of the peripheral wall 71 is closed by a columnar head 72, and the sliding portion 70 is mounted so that it can be pushed backward from the position where the first vent hole 23 is closed.

  The trigger G has a pair of side plates extending from both sides of the front plate, a bottom plate extending from the front plate and the lower ends of the side plates, and the front plate on both sides of the connecting member D behind the spring plate 68. The upper end portions of both side plates protruding upward are pivotally attached to each other so that they can swing back and forth. In addition, the lower ends of a pair of spring plates 68 that are integrally suspended from the left and right sides of the connecting member D are linked to the upper portions of both side surfaces of the trigger G so as to be pivoted in a constantly urged state. Furthermore, the tip of the plunger F is linked to the upper part of the trigger G so that the plunger F can be pushed in by pulling in the trigger G, and the trigger is restored to the original state by the elastic restoring force of the spring plate 68 from the pushed state. The plunger F is configured to be pulled back to the original state.

  The main body cover H covers and fixes the upper surface, both side surfaces, and the rear surface of the main body B to the main body B.

  The trigger type liquid ejector 1 configured as described above pushes the plunger F by pulling the trigger G backward from the state shown in FIG. 1, and the liquid in the cylinder cylinder 20 is press-fitted into the vertical flow path Pa to suck up. The valve V2 is opened and ejected from the ejection port of the nozzle E through the nozzle E through the injection flow path Pb. At the same time, a part of the pressurized liquid is introduced into the auxiliary cylinder C through the communication path 33.

  Next, when the pull-in of the trigger G is stopped, the trigger G is returned to the original state by the elastic restoring force of the spring plate 68, and the plunger F is pulled out, and the discharge valve V1 is opened in the cylinder cylinder 20 which has become negative pressure to open the container body. The liquid in 80 is introduced. At that time, the annular piston 55 in the auxiliary cylinder C is raised by the upward biasing force to pressurize the liquid in the auxiliary cylinder C, and from the communication path 33, through the upper end of the vertical flow path Pa and the nozzle E through the injection flow path Pb. It is ejected from the spout. Therefore, the liquid can be continuously ejected by repeatedly pulling the trigger G.

  As a specific example of ejecting the liquid as described above, for example, about 50% of the liquid supplied to the longitudinal flow path Pa is ejected from the nozzle E directly through the injection flow path Pb, and the remaining about 50% is ejected. It can also be designed to be introduced into the auxiliary cylinder C via the communication passage 33. In addition, it is possible to design so that a large amount of liquid is accumulated in the auxiliary cylinder C by repeatedly operating the trigger G.

  When a pressure accumulating mechanism having a pressure accumulating valve conventionally used is provided in the nozzle, the liquid ejection pressure is further stabilized and the spray state is improved.

DESCRIPTION OF SYMBOLS 1: Trigger type liquid ejector A: Mounting cap B: Main body B1: Main body part 10 ... Connection cylinder part, 11 ... Top plate, 12 ... Vertical cylinder, 13 ... Injection cylinder, 14 ... Cylinder fitting cylinder,
15 ... sealing cylinder B2: cylinder member 20 ... cylinder cylinder, 21 ... cylindrical projection, 22 ... annular gap, 23 ... first vent hole,
24 ... 2nd ventilation hole B3: Intake 30 ... Large diameter cylinder part, 31 ... Top plate, 32 ... Small diameter cylinder part, 33 ... Communication path, 34 ... Flange,
35 ... small diameter seal cylinder part, 36 ... large diameter seal cylinder part, 37 ... third vent hole, 38 ... through hole,
DESCRIPTION OF SYMBOLS 39 ... 1st communicating path, 40 ... 2nd communicating path, 41 ... 3rd communicating path, 42 ... Cylinder part for fitting C: Auxiliary cylinder 50 ... Inner cylinder, 51 ... Outer cylinder, 52 ... Pipe for suction, 53 ... Communication Road, 54 ... annular space,
55 ... annular piston, 55a ... outer sliding part, 55b ... inner sliding part, 55c ... connecting plate C1: first member 56 ... top wall, 57 ... fitting cylinder, 58 ... pressure release groove, 59 ... pressure release hole , 60 ... connecting piece,
61 ... support plate C2: second member 62 ... fitting tube, 63 ... bottom wall D: connecting member 65 ... mounting tube portion, 66 ... substrate, 67 ... through hole, 68 ... spring plate E: nozzle F: plunger 70 ... Sliding part 71 ... Peripheral wall part 72 ... Columnar head G: Trigger H: Main body cover 80: Container body 81 ... Mouth neck V1: Discharge valve V2: Suction valve Pa: Vertical flow path Pb: Injection flow path s :coil spring

Claims (3)

  A longitudinal channel (Pa) communicating with the inside of the container body (80) via the pipe (52), a cylinder tube (20) projecting forward in communication with the longitudinal channel (Pa), and a cylinder tube (20 ) An injection cylinder (B) having a main body (B) having an injection flow path (Pb) communicating with the vertical flow path (Pa) at the upper position and extending forward, and defining the injection flow path (Pb) The nozzle (E) is attached to the tip of 13), and the liquid in the container body (80) is moved into the cylinder cylinder (20) by a trigger (G) operation suspended from the front of the injection cylinder (13). A trigger type liquid ejector that is sucked into the nozzle and ejected from the nozzle (E) outlet, and includes an inner cylinder (50) and an outer cylinder (51), and the inside of the inner cylinder (50) has a longitudinal flow path (Pa). And an annular space (54) defined between the inner cylinder (50) and the outer cylinder (51) as a communication path (53) communicating with the pipe (52). An auxiliary cylinder (C) is provided in which the upper part in the flow path (Pa) is communicated via the communication path (33), and the inner peripheral edge is provided in the inner cylinder (50) and the outer peripheral edge is provided in the outer cylinder (51). An annular piston (55) that is slidably fitted and divides the annular space (54) up and down is mounted in an upward biased state, and is added from the nozzle (E) outlet through operation of the trigger (G). Part of the pressurized liquid is introduced into the auxiliary cylinder (C) by pressing the annular piston (55), and the liquid in the auxiliary cylinder (C) is operated by the upward biasing force of the annular piston (55) after the trigger (G) is operated. Is a trigger type liquid ejector characterized in that it can be ejected from the nozzle (E) outlet.   The trigger type liquid ejector according to claim 1, wherein a pressure release groove (58) at the end of ejection is provided vertically at the inner peripheral upper end of the outer cylinder (51) of the auxiliary cylinder (C).   The trigger type liquid ejector according to claim 1 or 2, wherein the bottom of the annular space (54) of the auxiliary cylinder (C) is closed and a pressure release hole (59) is formed in the outer cylinder (51).